FORM 2
THE PATENTS ACT 1970
[39 OF 1970]
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10; Rule 13]
TITLE: “BRAKE HEALTH MONITORING SYSTEM OF A VEHICLE AND A
METHOD THEREOF”
Name and Address of the Applicant:
TATA MOTORS LIMITED,
Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001, Maharashtra
Nationality: Indian
The following specification particularly describes the invention and the manner in which it is
to be performed.
2
TECHNICAL FIELD
[0001] The present disclosure relates to a vehicle braking system. Particularly, but not
exclusively, the present disclosure relates to a Brake Health Monitoring System (BHMS) of a
vehicle and a method thereof.
BACKGROUND
[0002] Vehicle braking system is a vital and sophisticated arrangement of various components
working together to effectively slow down and stop the vehicle when required. Said system
slows down and stops the vehicle by converting the vehicle’s kinetic energy into heat energy,
which is then dissipated to reduce the vehicle's speed or bring it to a complete stop. Said system
ensures safe driving by providing control over the vehicle's motion and preventing accidents.
[0003] The vehicle braking system incorporates different type of brakes which includes air
brake system, hydraulic brake system etc. However, such brake system is made up of multiple
elements and components such as valves, tubes, liner etc. Due to this intricate design, they are
more prone to wear and tear. The brake effectiveness can deteriorate due to liner fade, air flow
blockage in pipes, leakages, valve failures etc. Liner fade can lead to extended stopping
distances, especially during downhill descents or repeated hard braking. Blockages in air pipes
(such as hoses, tubes, or connectors) can disrupt air flow and lead to delayed braking response,
or uneven braking. Furthermore, the valve failures disrupt the balance between braking force
on different wheels which leads to uneven braking and unexpected brake engagement. When
brake effectiveness deteriorates significantly, drivers may struggle to stop the vehicle promptly.
Longer stopping distances increase the risk of collisions, especially in emergency situations.
Uneven braking or sudden brake failure can lead to loss of vehicle control.
[0004] Hence, there is a need for a system and method which empowers vehicle owners or
driver to recognize the situation of the vehicle’s brake health or receive alerts regarding the
brake health, prompting regular maintenance to ensure optimal functionality.
[0005] The information disclosed in this background of the disclosure section is only for
enhancement of understanding of the general background of the invention and should not be
taken as an acknowledgement or any form of suggestion that this information forms the prior
art already known to a person skilled in the art.
3
SUMMARY
[0006] Present disclosure discloses a brake health monitoring system for monitoring break
health of a vehicle. The brake health monitoring system comprising a Brake Health Monitoring
Control (BHMC) unit and a plurality of sensors communicatively associated with the BHMC
unit. The BHMC unit is configured to: receive sensor data related to at least one of a suspension
level of the vehicle, a gradient component of the vehicle, and a pressure applied on the brake
actuators of the vehicle from the plurality of sensors. The BHMC unit is further configured to
estimate when the vehicle speed is greater than a first predefined threshold, deceleration
parameters comprising at least one of, an axle load of the vehicle based on the suspension level
of the vehicle, a gradient resistance of the vehicle based on the suspension level of the vehicle
and the gradient component of the vehicle, a brake force applied on the vehicle based on the
pressure applied on the brake actuators and at least one foundation brake parameters. The
BHMC unit is further configured to estimate a driver intended deceleration based on the
estimated deceleration parameters and a pre-defined rolling resistance of the vehicle and
determine a brake performance degradation when deviation of the driver intended deceleration
from an actual deceleration exceeds a second predefined threshold.
[0007] In the embodiment, the actual deceleration is determined by the BHMC unit based on
wheel speed change rate or vehicle speed change rate detected by plurality of sensors or any
other wheel speed detection system when the brake is applied to the wheel of the vehicle.
[0008] In the embodiment, the BHMC unit further configured to perform one or more alerting
actions when the deviation is determined to be exceeding the second predefined threshold,
wherein the one or more alerting actions comprises at least one of sending warning signals
related to the brake performance degradation and the requirement of an engine brake activation
to one or more electronic devices of the driver, and a Vehicle Control Unit (VCU).
[0009] In the embodiment, the BHMC unit is further configured to estimate a brake response
time indicating time taken to build a brake pressure upon applying a brake of the vehicle, based
on the sensor data; and perform one or more alerting actions when the brake response time is
determined to be exceeding a third predefined threshold.
4
[0010] In the embodiment, the BHMC unit further configured to detect braking events
comprising at least one of an unintended park brake release, a loss of supply pressure, and an
unintended service braking based on the sensor data, determine occurrence of an unintended
braking instance based on at least one of the estimated unintended park brake release, loss of
supply pressure and unintended service braking and perform one or more alerting actions when
the occurrence of the unintended braking instance is determined.
[0011] In the embodiment, further comprises the Vehicle Control Unit (VCU) associated with
the BHMC unit configured to activate the engine brake in response to the determination of the
brake performance degradation.
[0012] The present disclosure further discloses a method of monitoring the brake health of the
vehicle. The method comprising: receiving, by a BHMC unit of a brake health monitoring
system, sensor data related to at least one of a suspension level of the vehicle, a gradient
component of the vehicle, and a pressure applied on the brake actuators of the vehicle from the
plurality of sensor. Further, the method comprises estimating, by the BHMC unit, when the
vehicle speed is greater than a first predefined threshold, deceleration parameters comprising
at least one of, an axle load of the vehicle based on the suspension level of the vehicle; a
gradient resistance of the vehicle based on the suspension level of the vehicle and the gradient
component of the vehicle; a brake force applied on the vehicle based on the pressure applied
on the brake actuators and at least one foundation brake parameters. Thereafter, the method
comprises estimating, by the BHMC unit, a driver intended deceleration based on at least one
of the estimated deceleration parameters and a pre-defined rolling resistance of the vehicle.
Finally, the method comprises determining, by the BHMC unit, a brake performance
degradation when deviation of the driver intended deceleration from an actual deceleration
exceeds a second predefined threshold.
[0013] The foregoing summary is illustrative only and is not intended to be in any way limiting.
In addition to the illustrative aspects, embodiments, and features described above, further
aspects, embodiments, and features will become apparent by reference to the drawings and the
following detailed description.
5
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0014] The accompanying drawings, which are incorporated in and constitute a part of this
disclosure, illustrate exemplary embodiments and, together with the description, explain the
disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the
figure in which the reference number first appears. The same numbers are used throughout the
figures to reference like features and components. Some embodiments of system and/or
methods in accordance with embodiments of the present subject matter are now described, by
way of example only, and regarding the accompanying figures, in which:
[0015] Fig. 1 shows an overview of an exemplary environment of a brake health monitoring
system in a vehicle, in accordance with some embodiments of the present disclosure.
[0016] Fig. 2 shows an exemplary representation of brake health monitoring system in the
vehicle, in accordance with some embodiments of the present disclosure.
[0017] Fig. 3a shows a detailed block diagram of the proposed system, in accordance with
some embodiments of the present disclosure.
[0018] Fig. 3b shows an exemplary mechanism for determining gradient parameters of the
vehicle for the estimation of the gradient resistance, in accordance with some embodiments of
the present disclosure.
[0019] Fig. 4 shows a flowchart illustrating a method of monitoring the brake health of a
vehicle in accordance with the embodiments of the present disclosure; and
[0020] Fig. 5 shows a general computer system architecture, in accordance with some
embodiments of the present disclosure.
[0021] It should be appreciated by those skilled in the art that any block diagrams herein
represent conceptual views of illustrative systems embodying the principles of the present
subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state
transition diagrams, pseudo code, and the like represent various processes which may be
substantially represented in computer readable medium and executed by a computer or
processor, whether such computer or processor is explicitly shown.
6
DETAILED DESCRIPTION
[0022] In the present document, the word “exemplary” is used herein to mean “serving as an
example, instance, or illustration.” Any embodiment or implementation of the present subject
matter described herein as “exemplary” is not necessarily to be construed as preferred or
advantageous over other embodiments.
[0023] While the disclosure is susceptible to various modifications and alternative forms,
specific embodiment thereof has been shown by way of example in the drawings and will be
described in detail below. It should be understood, however that it is not intended to limit the
disclosure to the specific forms disclosed, but on the contrary, the disclosure is to cover all
modifications, equivalents, and alternative falling within the scope of the disclosure.
[0024] The terms “comprises”, “comprising”, “includes”, or any other variations thereof, are
intended to cover a non-exclusive inclusion, such that a setup, device, or method that comprises
a list of components or steps does not include only those components or steps but may include
other components or steps not expressly listed or inherent to such setup or device or method.
In other words, one or more elements in a system or apparatus proceeded by “comprises… a”
does not, without more constraints, preclude the existence of other elements or additional
elements in the system or method.
[0025] In an embodiment, the present disclosure proposes a system and method for monitoring
the break health the vehicle. In an embodiment, a plurality of sensor detects the parameters
associated with the vehicle. Said detected parameters by the plurality of the sensor are
transmitted to the Brake Health Monitoring Control (BHMC) Unit.
[0026] In the embodiment, the BHMC unit may comprise a deceleration monitoring module,
a response time monitoring module and an unintended braking module. The deceleration
monitoring module may monitor the deceleration of the vehicle and accordingly determine the
brake performance degradation based on at least the parameters detected by the plurality of
sensors associated with the vehicle. The deceleration monitoring module of the BHMC unit
may receive the parameters related to at least one of a suspension level of the vehicle, a gradient
resistance of the vehicle, and a pressure applied on the brake actuators of the vehicle from the
plurality of sensors. Said deceleration monitoring module may estimate the parameters
associated with the vehicle to monitor the brake health when the vehicle speed is greater than
first threshold speed.
7
[0027] The deceleration monitoring module may estimate the intended deceleration based on
the parameters received from the plurality of sensors and predefined rolling resistance of the
vehicle. The deceleration monitoring module generates one or more alerting actions of a brake
performance degradation when deviation of the driver intended deceleration from an actual
deceleration exceeds a second predefined threshold.
[0028] In the embodiment, the response time monitoring module may estimate a brake
response time which indicates the time taken to build a brake pressure upon applying a brake
of the vehicle, based on the parameters of the vehicle detected by the plurality of sensors. Said
response time monitoring module generates one or more alerting actions when the brake
response time is determined to be exceeding a third predefined threshold.
[0029] In the embodiment, unintended braking module may detect the braking events. The
braking events may comprise at least one of an unintended park brake release, a loss of supply
pressure, and an unintended service braking. At least one of the braking events are determined
by unintended braking module through the parameters of the vehicle detected by the plurality
of sensors. On determining of the braking events by the unintended braking module, one or
more alerting actions are generated.
[0030] In the embodiment, the Vehicle Control Unit (VCU) may receive one or more alerting
actions. The VCU may transmit said one or more alerting actions to a cluster associated with
the vehicle which may include infotainment system of the vehicle, audio visual devices of the
vehicle or any other electronic devices associated with driver or users of the vehicle. In some
embodiments, transmission of the one or more alerting actions may be performed to alert the
driver or users of the vehicle regarding the brake situation of the vehicle. The alerting actions
may be related to the brake performance degradation. On receiving the alerting action related
to the brake performance degradation, the VCU activates the engine brake and/or other brake
systems associated with the vehicle.
[0031] From the above, it is clear that the present disclosure aims to monitor the brake health
of vehicle. The proposed system and method further send one or more alert signals regarding
the brake health and prompting regular maintenance. Due to the monitoring and determining
the health of the brake through the system, the vehicular collision and structural failure
experience a diminution.
8
[0032] In the following detailed description of the embodiments of the disclosure, reference is
made to the accompanying drawings that form a part hereof, and in which are shown by way
of illustration specific embodiments in which the disclosure may be practiced. These
embodiments are described in sufficient detail to enable those skilled in the art to practice the
disclosure, and it is to be understood that other embodiments may be utilized and that changes
may be made without departing from the scope of the present disclosure. The following
description is, therefore, not to be taken in a limiting sense.
[0033] FIG. 1 shows an exemplary environment 100 for brake health monitoring system 110
in a vehicle 101, in accordance with some embodiments of the present disclosure.
[0034] In an embodiment, an environment 100 may comprise a vehicle 101. The vehicle 101
may be associated with a sensor 103a to sensor 103n (collectively referred as a plurality of
sensors 103), a Brake Health Monitoring Control (BHMC) unit 105 and, a Vehicle Control
Unit (VCU) 107. In the embodiment, the BHMC unit 105 may associated with the VCU 107
as shown in Fig.1. In other embodiment, the BHMC unit may configured in the VCU (not
shown in Figure). The plurality of sensors 103 may detect a plurality of parameters associated
with the vehicle 101. In one non-limiting embodiment, the BHMC unit 105 may be any
computing device configurable to monitor the brake health of the vehicle 101. The vehicle 101
may be an Internal Combustion Engine (ICE) vehicle, autonomous vehicle such as, without
limiting to, a Battery Electric Vehicle (BEV), a Hybrid Electric Vehicle (HEV), a Plug-In
Hybrid Electric Vehicle (PHEV), or a Fuel Cell Electric Vehicle (FCEV). As an example, the
vehicle 101 may include, but not limited to, a car, a truck, a lorry, a bus and the like. In another
non-limiting embodiment, the VCU 107 may comprise one or more VCUs 107.
[0035] In one non-limiting embodiment, the plurality of sensors 103 may detect the parameters
of the vehicle 101. The detected parameters of the vehicle 101 through the sensors are
transmitted to the BHMC unit 105. The BHMC unit 105 may analyse the detected parameters
associated with the brake health of the vehicle 101 and generate one or more alerting actions
based on the brake health of the vehicle 101. The VCU 107 receives the alerting actions from
the BHMC unit 105 and based on said alerting actions, alert the driver or take an appropriate
action.
[0036] FIG.2 shows a block diagram of the BHMC unit 105 of the proposed system, in
accordance with some embodiments of the present disclosure.
9
[0037] In an embodiment, the BHMC unit 105 may comprise a controller 201, an Input/Output
(I/O) interface 203, a memory 205, and one or more modules 207. As an example, the data 209
is stored in the memory 205 configured in the BHMC unit 105 of the brake health monitoring
system 110 as shown in Fig. 2. The I/O interface 203 may be communicatively interfaced with
the controller 201 and the memory 205 of the BHMC unit 105. The controller 201 and memory
205 may be communicatively associated with the one or more modules 207. The controller 201
may be configured to perform one or more functions of the BHMC unit 105 for monitoring the
brake health of the vehicle 101.
[0038] In the embodiment, the memory 205 may be configured to store vehicle parameter data
211, threshold data 213, a deceleration monitoring data 215, a response time monitoring data
217, unintended braking detection data 219 and other data 221. Furthermore, the memory 205
may store instructions for the controller 201. The memory 205 may be receive the detected
parameters from the plurality of the sensors 103 configured in the vehicle 101. In some
embodiments, the memory 205 may be store data generated by the one or more modules 207
and controller 201.
[0039] In the embodiment, the vehicle parameter data 211 may store the information related to
values of one or more vehicle parameters monitored by the plurality of sensors 103. As an
example, the one or more vehicle parameters may store the information related to fuel level,
vehicle speed, engine temperature, odometer readings etc. The aforementioned data should not
be construed as a limitation of the present disclosure.
[0040] In the embodiment, the threshold data 213 may store the information related to the
threshold values associated with the brake health monitoring system 110 of the present
disclosure. For example, the threshold data 213 may store the first threshold value that may
indicate the threshold speed of the vehicle 101, second threshold value that may indicate the
threshold value of deviation of the intended deceleration from an actual deceleration of vehicle
101, third threshold value that may indicate the threshold value of the time of brake response,
fourth threshold value that may indicate the threshold value for the pressure of the parking
brake actuators, fifth threshold value that may indicate the threshold value of the supply
pressure of the air for air brake system, sixth threshold value that may indicate the value of the
threshold of the difference between the air pressure at the brake actuator of service brake and
the air pressure at the foot brake pedal, seventh threshold value that may indicate minimum no.
of times a warning signal should be generated before performing the alerting action of
10
activating an engine brake of the vehicle. The threshold data 213 may change or update
according to the requirement. The aforementioned data should not be construed as a limitation
of the present disclosure.
[0041] In the embodiment, the deceleration monitoring data 215 may store the data related to
deceleration monitoring of the vehicle according to the present disclosure. For example,
deceleration monitoring data 215 may store the information related to the axle load of the
vehicle 101, gradient of the road with respect to the vehicle inclination, brake force demanded
by the driver. The deceleration monitoring data 215 may further store the data related to
intended deceleration and the actual deceleration estimated by the deceleration monitoring unit
231. The aforementioned data should not be construed as a limitation of the present disclosure.
[0042] In the embodiment, the response time monitoring data 217 may store the data related to
response time of the brake according to the present invention. For example, the response time
monitoring data 217 may store the information related to the time stamps and pressure
information estimated by the response time monitoring unit 233. The aforementioned data
should not be construed as a limitation of the present disclosure.
[0043] In the embodiment, the unintended braking detection data 219 may store the data related
to unintended braking events according to the present invention. The unintended braking
detection data 219 may store the data related to the pressure of the air, park braking pressure,
service brake pressure, brake pedal position, time stamps, duration, pattern of events etc. The
aforementioned data should not be construed as a limitation of the present disclosure.
[0044] In the embodiment, the other data 221 may store miscellaneous information such as
telematic data, maintenance and service history, accident history, behavior of the driver,
vehicle data, registration data etc. Furthermore, the other data 221 may store which may be
used to perform various miscellaneous functionalities for the brake health monitoring system
110.
[0045] In some embodiments, the data 209 may be stored in the memory 205 in form of various
data structures. Additionally, the data 209 can be organized using data models, such as
relational or hierarchical data models. The other data 221 may store data, including temporary
data and temporary files, generated by the one or more modules 207 for performing the various
functions of the brake health monitoring system 110.
11
[0046] In the embodiment, the one or more module 207 may be include deceleration
monitoring module 231, a response time monitoring module 233, an unintended braking
module 235 and other modules 237.
[0047] The deceleration monitoring module 231 may be configured to monitor the deceleration
of the vehicle 101 by applying brake pressure. The deceleration monitoring module 231 may
estimate the intended deceleration and actual deceleration. Based on said intended deceleration
and actual deceleration, estimate the brake health degradation of the vehicle 101.
[0048] In the embodiment, the response time monitoring module 233 may be configured to
monitor the brake response time which indicates the time taken to build a brake pressure upon
applying a brake of the vehicle 101 by the driver. The response time monitoring module 233
may estimate the response time based on the parameters detected through the plurality of
sensors 103.
[0049] In the embodiment, the unintended braking module 235 may be configured to determine
the braking events comprising at least one of an unintended park brake release, a loss of supply
pressure, and an unintended service braking. The unintended park brake release indicates the
event when the pressure at parking side of brake actuator approaches threshold without park
brake application. The loss of supply pressure indicates the event when the low supply pressure
of the air for the air brake system is detected through the plurality of sensors 103. The
unintended service braking indicates the event when the brake pressure is detected through the
plurality of sensors 103 without driver demand.
[0050] In the embodiment, the other modules 237 may include any component or module,
which may be necessary for brake health monitoring system 110 of the vehicle 101 according
to the present disclosure.
[0051] The functionality of each of the aforementioned modules is explained in more detail in
the description of Fig. 3a.
[0052] Fig. 3a shows a detailed block diagram of a system for monitoring the brake health of
the vehicle 101, in accordance with some embodiments of the present disclosure.
[0053] As illustrated in the Fig. 3a, a sensor 103a to sensor 103n (collectively referred as
plurality of sensors 103) detects the plurality of the parameters associated with the vehicle 101.
12
For example, the plurality of sensors 103 may include, but not limited to, a wheel speed sensor
to detect the speed of the vehicle 101, a suspension level sensor to detect the parameters
associated with the suspension level deflection of the vehicle 101, a gradient sensor to detect
the slope or gradient of the road surface relative to the vehicle inclination, a pressure sensor to
detect the brake pressure of the foundation brake parameters and brake pressure of the actuator
on the driver demand, a pressure switch to detect pressure threshold level of parking brake
actuators, a pressure transducer to detect the air pressure of the air brake system, and a brake
switch to monitor the position of the brake pedal of the vehicle 101. The aforementioned
plurality of the sensors 103 should not be construed as a limitation of the present disclosure.
The plurality of sensors 103 may further include any sensors, switches and transducers to detect
the parameters associated with the vehicle 101.
[0054] The BHMC unit 105 may receive the parameters associated with the vehicle 101
through the plurality of sensors 103. In the embodiment, the BHMC unit 105 may include a
declaration monitoring module 231. The deceleration monitoring module 231 monitors the
deceleration of the vehicle 101 and accordingly determines the brake performance based on at
least the parameters detected by the one or more sensors 103 associated with the vehicle 101.
The deceleration monitoring module 231 may estimate the parameters associated with the
vehicle 101 to monitor the brake performance when the vehicle speed is greater than first
threshold speed.
[0055] In the embodiment, the deceleration monitoring module 231 may estimate the axle load
of the vehicle 101. The deceleration monitoring module 231 of the BHMC unit 105 estimates
the axle load by receiving the parameters detected through the front suspension level sensor
and rear suspension level sensor of the vehicle 101. For example, the suspension level sensor
detects the level of the axle and calculate Front Axle Weight (FAW) and Rear Axle Weight
(RAW). Based on the calculation of the FAW and RAW, the total axle load of the vehicle 101
is estimated as shown in the below Equation 1.
Total vehicle weight (W) = FAW + RAW -------- Equation 1
[0056] The deceleration monitoring module 231 may estimate the axle load by including, but
not limited to, the other elements e.g., chassis height of front axle and rear axle, stiffness of the
spring etc.
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[0057] In the embodiment, the deceleration monitoring module 231 may estimate the gradient
resistance of the vehicle 101. The gradient resistance of the vehicle 101 may be estimated by
slope or gradient of the road surface in relative to the inclination of the vehicle 101. The
deceleration monitoring module 231 may receive the gradient parameters from the gradient
sensor, the front suspension level sensor and rear suspension level sensor of the vehicle 101.
Said plurality of sensors 103 may estimate the force on the vehicle 101 by detecting rear chassis
height and front chassis height with reference to the surface of the road i.e. the uphill slope and
downhill slope, wheel base, instantaneous mass and gravity force on the vehicle 101. Based on
that estimation of the force on the vehicle 101, the gradient resistance of the vehicle 101 is
estimated as shown in the below Equation 2.1 and 2.2 and shown in Fig. 3b.
Calculate downhill force component of gravity:
𝐹𝑔 = −𝑚𝑔𝑠𝑖𝑛𝛼'' -------- Equation 2.1
Where, 𝛼’’=𝛼-𝛼’ -------- Equations 2.1.1
Where, 𝛼''=
tan|ℎ𝑓−ℎ𝑟|
𝐿
- -------- Equations 2.1.2
Calculate Uphill force component of gravity
𝐹𝑔 = 𝑚𝑔𝑠𝑖𝑛𝛼'' ------- Equation 2.2
Where, α''=α+α' -------- Equation 2.2.1
Where, 𝛼''=
tan|ℎ𝑓−ℎ𝑟|
𝐿
-------- Equation 2.2.2
where,
m = instantaneous mass
g= gravitational constant
α = road grade
α’= vehicle inclination
α”= vehicle inclination in true horizontal
hf = chassis heigh at front
hr = chassis height at rear
14
L= wheel base
[0058] In the embodiment, the deceleration monitoring module 231 may estimate the brake
force demanded by the driver of the vehicle 101. The deceleration monitoring module 231 may
receive the parameters associated with the vehicle 101 through the plurality of the sensors 103
e.g., pressure sensors. The pressure sensors may detect the pressure applied on the brake
actuators and at least the foundation brake parameters of the front axle brake system (Ff) and
rear axle brake system (Fr). The foundation brake parameters may include, but not limiting to,
spring actuators, brake drum, brake shoes, cam brake, disc brake etc. Based on the brake force
detected by the pressure sensors, the total brake force demanded by the driver is estimated as
shown in below Equation 3.
Total Brake Force (Fb) = Ff + Fr ------ Equation 3
Where Front brake force (Ff) and rear brake force (Fr) can be found by using the following
equations:
Ff =
𝑛𝑓∗(𝑝𝑠−𝑝𝐿)∗𝐴𝑐∗𝐿𝑠∗𝑅𝑑∗𝐵𝐹
𝑅𝑐∗𝑅𝑑𝑦𝑛
------ Equation 3.1 and
Fr =
𝑛𝑟∗(𝑝𝑠−𝑝𝐿)∗𝐴𝑐∗𝐿𝑠∗𝑅𝑑∗𝐵𝐹
𝑅𝑐∗𝑅𝑑𝑦𝑛
------ Equation 3.2
Where,
nf = no. of brakes on front axle
pL=lift off pressure for brake chamber
Ac=brake chamber effective surface area
Ls=Slack adjuster length
Rd=Brake drum radius
BF=Brake factor of liner
Rc= S cam radius
Rdyn= Dynamic rolling radius of tyre
Ps = brake pressure of service brake
15
In the embodiment, the deceleration monitoring module 231 may also estimate the brake torque
gradient which indicates the brake force build up with unit increase in brake pressure based on
foundation brake and tyre parameters described in equations 3.1 and 3.2.
[0059] Upon the estimation of at least one of the parameters i.e. axle load of the vehicle 101,
gradient resistance of the vehicle 101, and the brake force demanded by the driver of the vehicle
101, the deceleration monitoring module 231 may estimate the intended deceleration. The
intended deceleration of the vehicle 101 is estimated by the deceleration monitoring module
231, when the speed of the vehicle 101 is greater than the first predefined threshold speed. The
intended deceleration of the vehicle 101 can be estimated as shown in following Equation 4.1
and 4.2.
Downhill braking intended deceleration z =
𝐹𝑏+𝐹𝑔+𝑅
𝑊
------ Equation 4.1
Uphill braking intended deceleration z =
𝐹𝑏−𝐹𝑔+𝑅
𝑊
------ Equation 4.2
Where,
R = constant rolling resistance of vehicle
Fb = Total Brake force
Fg = Gradient resistance
[0060] In the embodiment, the deceleration monitoring module 231 may determine the actual
deceleration while the brake is applied to the vehicle 101. The actual deceleration is calculated
based on wheel speed change or vehicle speed change with respect to the time detected when
the brake applied to the vehicle 101. The Wheel speed change or vehicle speed change may be
detected by the plurality of sensors 103 e.g. wheel speed sensors and/or other wheel speed
detection system associated with the vehicle. E.g. Anti-lock Braking System (ABS). It is to be
construed that the calculation of the actual deceleration is not solely limited to the abovementioned
technique or forthcoming technique.
[0061] Upon determining the actual deceleration and estimation of the intended deceleration,
the deceleration monitoring module 231 may be compared to the actual deceleration with
respect to the intended deceleration. The alert actions as the brake performance degradation
16
warning is generated by the deceleration monitoring module 231 when the deviation of the
intended deceleration from the actual declaration exceeds a second predefined value.
[0062] In other embodiment, the BHMC unit 105 may include the response time monitoring
module 233. The response time monitoring module 233 may detect the brake response time
which indicates the time taken to build a brake pressure upon applying a service brake of the
vehicle 101 by the driver. The response time monitoring module 233 may estimate the response
time based on the parameters detected by the plurality of sensors 103 e.g., pressure sensor. It
is to be construed that the parameters detected for the estimation of the response time is not
solely limited to the above-mentioned parameters. The response time monitoring module 233
may capture a time stamp when the pressure detected by pressure sensor at foot brake pedal is
due to the brake applied by the driver. The response time monitoring module 233 may further
capture the time stamp when the pressure sensor detected the brake force generated at the
service brake actuators of the front and rear brake system. The response time monitoring
module 233 estimates the response time based on the difference of the time stamp captured
when the brake is applied by the driver and the brake force generated at the brake actuators of
the vehicle 101. When the estimated response time exceeds the third predefined threshold value
of the time, the poor brake response signal may be generated as an altering action by the
response time monitoring module 233.
[0063] In another embodiment, the BHMC unit 105 may include the unintended braking
module 235. The unintended braking module 235 may determine the braking events comprising
at least one of an unintended park brake release, a loss of supply pressure, and an unintended
service braking.
[0064] The unintended park brake release indicates an event when the pressure of the parking
brake actuators approaches fourth predefined threshold value without parking brake
application. The unintended braking module 235 may determine the loss of pressure at the
parking brake actuator when the speed of the vehicle 101 is detected. Said unintended parking
brake pressure is determined through the plurality of sensors 103 e.g. brake switch. It is to be
construed that the parameters detected for the unintended park brake release are not solely
limited to be determined using above-mentioned sensors or switches or transducers. When
parking brake pressure deviates from the fourth predefined threshold value during the running
of vehicle 101, the unintended parking brake signal may be generated as an altering action by
the unintended braking module 235.
17
[0065] The loss of supply pressure indicates an event when the supply pressure of the air of
the air brake system drops below a fifth predefined threshold value. The unintended braking
module 235 may determine the loss of supply pressure based on the parameters detected by the
plurality of sensors 103 e.g. pressure transducers. It is to be construed that the parameters
detected for loss of supply pressure is not solely limited to be determined by the abovementioned
sensors, switches or transducers. When supply pressure of air drops below the fifth
predetermined threshold value, the loss of supply pressure signal as an altering action may be
generated by the unintended braking module 235. Furthermore, the unintended braking module
235 may identify the air leakage of the air brake system. The unintended braking module 235
may determine the air leakage of the air brake system based on the parameters detected through
the plurality of sensors 103 e.g. pressure sensor. In some embodiments, when the difference
between the air pressure determined at the brake actuator by the pressure sensors at service
brake and the air pressure at the foot brake pedal determined by the pressure sensor exceeds a
sixth predetermined threshold value, the air leakage signal may be generated as an altering
action by the unintended braking module 235. In other embodiment, the unintended parking
module 235 may determine the air leakage of the air brake system based on the measurement
of the duty cycle of the air compressor. When the duty cycle of the air compressor exceeds an
allowed limit, the unintended braking module 235 may generate the air leakage signal.
[0066] The unintended service brake indicates an event when the pressure of the brake at
service side brake actuator appears without brake application. The unintended braking module
235 may determine the service brake pressure through the plurality of sensors 103 e.g. the brake
switch and pressure sensors. It is to be construed that the parameters detected for the unintended
service brake are not determined solely based on the above-mentioned sensors, switches and
transducers. In some embodiments, when the brake pressure at the brake actuators of the
service brake is detected through the brake pressure sensors, even though the brake is not
applied, the unintended service brake may be generated as an altering action by the unintended
braking module 235.
[0067] Upon the generation of the at least one alert action generated by the deceleration
monitoring module 231, the response time monitoring module 233 and unintended parking
module 235 of the BHMC unit 105, said alter action may be transmitted to the Vehicle Control
Unit (VCU) 107.
18
[0068] In the embodiment, the VCU 107 may receive the alert actions from the BHMC unit
105. When the VCU 107 detects at least one of an alert action related to the brake performance
degradation of the vehicle 101 generated by the deceleration monitoring module 231 of the
BHMC unit 105, VCU 107 may generate the warning signal and send to the cluster. Said cluster
associated with the vehicle may include infotainment system of the vehicle, audio visual
devices of the vehicle or any other electronic devices associated with driver or users of the
vehicle. In some embodiments, transmission of the one or more alerting actions may be
performed to alert the driver or users of the vehicle regarding the brake situation of the vehicle.
The cluster alerts the driver regarding the brake performance degradation. Further, the VCU
107 may activate the engine brake or other brake system associated with the vehicle 101 when
the generation of the warning signal by the VCU 107 exceeds the seventh predefined threshold.
In some embodiments, the other brake system associated with the vehicle may include
Regenerative brake, Exhaust brake, Retarder etc. The aforementioned brake system should not
be construed as a limitation of the present disclosure.
[0069] Considering an exemplary scenario in which the data related to the one or more
parameters is received by the BHMC unit 105 through plurality of sensors 103 as shown in the
below Tables.
Calculation of Actual deceleration:
Initial speed and time of vehicle [Brake Triggered]
Speed S Kmph Speed S1 m/s Time T0 [s]
26.07 7.24 29.30
Final speed and time – [Brake end]
Speed S Kmph Speed S2 m/s Time T1 [s]
0 0 32.20
From the above, the actual deceleration is determined by using the following expression:
Actual deceleration (Za) =
(𝑆2−𝑆1)
(𝑇1−𝑇0)
=
(0−7.24)
(32.20−29.30)
= -2.50 m/s2
Where,
S1= Initial speed in m/sec.
19
S2= Final speed in m/sec.
T0= Initial time in sec. (brake triggered)
T1= Final time in sec. (brake end)
The BHMC unit 105 further determines the below parameters using the plurality of sensors
103 as disclosed in the present disclosure.
Calculation of Intended deceleration:
Parameters Value Unit
Braking time 2.9 s
Brake torque gradient front 615.1 Kg-m/Bar
Brake pressure front 1.93 Bar
Brake force front axle (Ff) 1187.1 Kg
Brake torque gradient rear 703.0 Kg-m/Bar
Brake pressure rear 1.94 Bar
Brake force rear axle (Fr) 1363.8 Kg
Total axle weight (W) 13213 Kg
Rolling Resistance (R) 158.6 Kg
Gradient of the slope -6 Degree
Type of the Slope Downhill -
Gradient resistance (Fg) -1381.1 Kg
Resultant force (Ff+Fr+R±Fg)×9.81×0.85 34110.3 Kg m/s2
Intended deceleration 2.58 m/s2
From the above parameters, the intended deceleration is estimated by the BHMC unit 105 using
the following expression.
Intended Deceleration =
(Ff+Fr+R±Fg)×9.81×0.85
𝑊
=
[1187.1+1363.8+158.6−(−1381.1)]×9.81×0.85
13213
=
34110.3
13213
20
= 2.58 m/s2
Where,
Ff = Brake force at front axle
Fr = Brake force at rear axle
R= Rolling resistance
Fg = Gradient resistance
W= Total axle load
Here, it is to be understood that the value 0.85 represents the loss of brake force
build up at tyre road interface due to available adhesion. The loss of brake force may
vary from vehicle to vehicle.
[0070] From the above example, the intended deceleration and actual deceleration are
compared and when the deviation of the intended deceleration from an actual deceleration
exceeds a second predefined threshold, the alert action as a brake health degradation signal is
generated.
[0071] FIG. 4 shows a flowchart illustrating a method for monitoring the brake health of the
vehicle 101, in accordance with some embodiments of the present disclosure.
[0072] As illustrated in FIG. 4, the method 400 may include one or more blocks illustrating a
method for monitoring the brake health of the vehicle 101. The method 400 may be described
in the general context of computer executable instructions. Generally, computer executable
instructions can include routines, programs, objects, components, data structures, procedures,
modules, and functions, which perform specific functions or implement specific abstract data
types.
[0073] The order in which the method 400 is described is not intended to be construed as a
limitation, and any number of the described method blocks can be combined in any order to
implement the method. Additionally, individual blocks may be deleted from the methods
without departing from the scope of the subject matter described herein. Furthermore, the
method can be implemented in any suitable hardware, software, firmware, or combination
thereof.
21
[0074] At block 401, the method 400 includes receiving, by a BHMC unit 105 of a brake health
monitoring system 110, parameters related to at least one of a suspension level of the vehicle,
a gradient component of the vehicle, and a pressure applied on the brake actuators of the vehicle
from the plurality of sensors 103.
[0075] At block 402, the method 400 includes estimating, by the BHMC unit 105, when the
vehicle speed is greater than a first predefined threshold, deceleration parameters comprising
at least one of,
a. an axle load of the vehicle based on the suspension level of the
vehicle.
b. a gradient resistance of the vehicle based on the suspension level
of the vehicle and the gradient component of the vehicle.
c. a brake force applied on the vehicle based on the pressure applied
on the brake actuators and at least one foundation brake
parameters.
[0076] At block 403, the method 400 includes estimating, by the BHMC unit 105, a driver
intended deceleration based on at least one of the estimated deceleration parameters and a predefined
rolling resistance of the vehicle 101.
[0077] At block 404, the method 400 includes determining, by the BHMC unit 105, a brake
performance degradation when deviation of the driver intended deceleration from an actual
deceleration exceeds a second predefined threshold. In some embodiments, the actual
deceleration is determined based on wheel speed or vehicle speed change rate detected by
plurality of sensors 103 when the brake applied to the wheel of the vehicle 101.
[0078] The one or more alerting actions are performed when the deviation is determined to be
exceeding the second predefined threshold. The one or more alerting actions comprises at least
one of sending warning signals related to the brake performance degradation and the
requirement of an engine brake activation to one or more electronic devices of the driver, and
a Vehicle Control Unit (VCU) 107. Based on the above determining the brake performance
degradation, the engine brake is activated by VCU 107 associated with the BHMC unit 105.
22
[0079] The method 400 may be further estimate a brake response time indicating time taken to
build a brake pressure upon applying a brake of the vehicle 101, based on the parameters
detected by the plurality of sensors 103 and performing one or more alerting actions when the
brake response time is determined to be exceeding a third predefined threshold.
[0080] The method 400 may further detect braking events comprising at least one of an
unintended park brake release, a loss of supply pressure, and an unintended service braking
based on the parameters detected by the plurality of sensors 103, determining the occurrence
of an unintended braking instance based on at least one of the estimated unintended park brake
release, loss of supply pressure and unintended service braking; and performing one or more
alerting actions when the occurrence of the unintended braking instance is determined.
[0081] FIG.5 is a block diagram of an exemplary computer system for implementing
embodiments consistent with the present disclosure.
[0082] In some embodiments, FIG.5 illustrates a block diagram of an exemplary computer
system 500 for implementing embodiments consistent with the present invention. In some
embodiments, the computer system 500 can be a brake health monitoring system 110 that is
used for monitoring the brake health of a vehicle 101. The computer system 500 may include
a central processing unit (“CPU” or “processor”) 502. The processor 502 may include at least
one data processor for executing program components for executing user or system-generated
business processes. A user may include a person, a person using a device such as such as those
included in this invention, or such a device itself. The processor 502 may include specialized
processing units such as integrated system (bus) controllers, memory management control
units, floating point units, graphics processing units, digital signal processing units, etc.
[0083] The processor 502 may be disposed in communication with input devices 511 and
output devices 512 via I/O interface 501. The I/O interface 501 may employ communication
protocols/methods such as, without limitation, audio, analog, digital, stereo, IEEE-1394, serial
bus, Universal Serial Bus (USB), infrared, PS/2, BNC, coaxial, component, composite, Digital
Visual Interface (DVI), high-definition multimedia interface (HDMI), Radio Frequency (RF)
antennas, S-Video, Video Graphics Array (VGA), IEEE 802.n /b/g/n/x, Bluetooth, cellular
(e.g., Code-Division Multiple Access (CDMA), High-Speed Packet Access (HSPA+), Global
System For Mobile Communications (GSM), Long-Term Evolution (LTE), WiMax, or the
like), etc.
23
[0084] Using the I/O interface 501, computer system 500 may communicate with input devices
511 and output devices 512.
[0085] In some embodiments, the processor 502 may be disposed in communication with a
communication network 509 via a network interface 503. The network interface 503 may
communicate with the communication network 509. The network interface 403 may employ
connection protocols including, without limitation, direct connect, Ethernet (e.g., twisted pair
10/100/1000 Base T), Transmission Control Protocol/Internet Protocol (TCP/IP), token ring,
IEEE 802.11a/b/g/n/x, etc. Using the network interface 503 and the communication network
509, the computer system 500 may communicate with Brake Health Monitoring Control
(BHMC) unit 105 and one or more Vehicle Control Units (VCU) 107a to VCU 107n. The
communication network 509 can be implemented as one of the different types of networks,
such as intranet or Local Area Network (LAN), Closed Area Network (CAN) and such within
the vehicle 101. The communication network 509 may either be a dedicated network or a shared
network, which represents an association of the different types of networks that use a variety
of protocols, for example, Hypertext Transfer Protocol (HTTP), CAN Protocol, Transmission
Control Protocol/Internet Protocol (TCP/IP), Wireless Application Protocol (WAP), etc., to
communicate with each other. Further, the communication network 509 may include a variety
of network devices, including routers, bridges, servers, computing devices, storage devices,
etc. The VCUs 107a to VCU 107n (also referred as one or more VCUs 107)may comprise an
Engine Management System (EMS), Transmission Control Module (TCM), Antilock Braking
System (ABS), Instrument Panel Cluster (IPC), Body Control Module (BCM), and the like.
The one or more electronic device or alert device 515 may include, but not limited to, a mobile
phone, a tablet, a laptop and the like. In some embodiments, the processor 502 may be disposed
in communication with a memory 505 (e.g., RAM, ROM, etc. not shown in FIG.4) via a
storage interface 504. The storage interface 504 may connect to memory 505 including, without
limitation, memory drives, removable disc drives, etc., employing connection protocols such
as Serial Advanced Technology Attachment (SATA), Integrated Drive Electronics (IDE),
IEEE-1394, Universal Serial Bus (USB), fibre channel, Small Computer Systems Interface
(SCSI), etc. The memory drives may further include a drum, magnetic disc drive, magnetooptical
drive, optical drive, Redundant Array of Independent Discs (RAID), solid-state memory
devices, solid-state drives, etc.
24
[0086] The memory 505 may store a collection of program or database components, including,
without limitation, a user interface 506, an operating system 507, a web browser 508 etc. In
some embodiments, the computer system 500 may store user/application data, such as the data,
variables, records, etc. as described in this invention. Such databases may be implemented as
fault-tolerant, relational, scalable, secure databases such as Oracle or Sybase.
[0087] The operating system 507 may facilitate resource management and operation of the
computer system 500. Examples of operating systems include, without limitation, APPLE®
MACINTOSH® OS X®, UNIX®, UNIX-like system distributions (E.G., BERKELEY
SOFTWARE DISTRIBUTION® (BSD), FREEBSD®, NETBSD®, OPENBSD, etc.), LINUX®
DISTRIBUTIONS (E.G., RED HAT®, UBUNTU®, KUBUNTU®, etc.), IBM®OS/2®,
MICROSOFT® WINDOWS® (XP®, VISTA®/7/8, 10 etc.), APPLE® IOS®, GOOGLETM
ANDROIDTM, BLACKBERRY® OS, or the like. The User interface 506 may facilitate display,
execution, interaction, manipulation, or operation of program components through textual or
graphical facilities. For example, user interfaces may provide computer interaction interface
elements on a display system operatively connected to the computer system 500, such as
cursors, icons, check boxes, menus, scrollers, windows, widgets, etc. Graphical User Interfaces
(GUIs) may be employed, including, without limitation, Apple® Macintosh® operating
systems’ Aqua®, IBM® OS/2®, Microsoft® Windows® (e.g., Aero, Metro, etc.), web interface
libraries (e.g., ActiveX®, Java®, Javascript®, AJAX, HTML, Adobe® Flash®, etc.), or the like.
[0088] In some embodiments, the computer system 500 may implement the web browser 508
stored program components. The web browser 508 may be a hypertext viewing application,
such as MICROSOFT® INTERNET EXPLORER®, GOOGLETM CHROMETM, MOZILLA®
FIREFOX®, APPLE® SAFARI®, etc. Secure web browsing may be provided using Secure
Hypertext Transport Protocol (HTTPS), Secure Sockets Layer (SSL), Transport Layer Security
(TLS), etc. Web browsers 508 may utilize facilities such as AJAX, DHTML, ADOBE®
FLASH®, JAVASCRIPT®, JAVA®, Application Programming Interfaces (APIs), etc. In some
embodiments, the computer system 500 may implement a mail server stored program
component. The mail server may be an Internet mail server such as Microsoft Exchange, or the
like. The mail server may utilize facilities such as Active Server Pages (ASP), ACTIVEX®,
ANSI® C++/C#, MICROSOFT®, .NET, CGI SCRIPTS, JAVA®, JAVASCRIPT®, PERL®,
PHP, PYTHON®, WEBOBJECTS®, etc. The mail server may utilize communication protocols
such as Internet Message Access Protocol (IMAP), Messaging Application Programming
25
Interface (MAPI), MICROSOFT® exchange, Post Office Protocol (POP), Simple Mail
Transfer Protocol (SMTP), or the like. In some embodiments, the computer system 500 may
implement a mail client stored program component. The mail client may be a mail viewing
application, such as APPLE® MAIL, MICROSOFT® ENTOURAGE®, MICROSOFT®
OUTLOOK®, MOZILLA® THUNDERBIRD®, etc.
[0089] Furthermore, one or more computer-readable storage media may be utilized in
implementing embodiments consistent with the present invention. A computer-readable
storage medium refers to any type of physical memory on which information or data readable
by a processor may be stored. Thus, a computer-readable storage medium may store
instructions for execution by one or more processors, including instructions for causing the
processor(s) to perform steps or stages consistent with the embodiments described herein. The
term “computer-readable medium” should be understood to include tangible items and exclude
carrier waves and transient signals, i.e., non-transitory. Examples include Random Access
Memory (RAM), Read-Only Memory (ROM), volatile memory, non-volatile memory, hard
drives, Compact Disc (CD) ROMs, Digital Video Disc (DVDs), flash drives, disks, and any
other known physical storage media.
Advantages of the embodiments of the present disclosure are illustrated herein.
[0090] In an embodiment, the present disclosure uses Brake health monitoring unit (BHMC)
unit which determines the brake health of the vehicle through detecting the parameters
associated with the vehicle through the plurality of sensors. Said detected parameters includes
a suspension level of the vehicle, a gradient component of the vehicle, and a pressure applied
on the brake actuators of the vehicle. Based on the plurality of the detected parameters and
rolling resistance of the vehicle, the intended deceleration is estimated. When the deviation of
the intended deceleration from the actual deceleration exceeds the second predefined threshold,
the break health degradation is determined.
[0091] From the above, it is clear that the present disclosure aims to monitor the brake health
of vehicle. The proposed system and method further send the alert signals regarding the brake
health and prompting regular maintenance. Due to the monitoring and the determination of the
health of the brake through the system, the vehicular collision and structural failure experience
a diminution.
26
[0092] In light of the technical advancements provided by the disclosed system and method of
monitoring the brake health of the vehicle, the claimed steps, as discussed above, are not
routine, conventional, or well-known aspects in the art, as the claimed steps provide the
aforesaid solutions to the technical problems existing in the conventional technologies. Further,
the claimed steps clearly bring an improvement in the functioning of the system itself, as the
claimed steps provide a technical solution to a technical problem.
[0093] The terms "an embodiment", "embodiment", "embodiments", "the embodiment", "the
embodiments", "one or more embodiments", "some embodiments", and "one embodiment"
mean "one or more (but not all) embodiments of the invention(s)" unless expressly specified
otherwise.
[0094] The terms "including", "comprising", “having” and variations thereof mean "including
but not limited to", unless expressly specified otherwise.
[0095] The enumerated listing of items does not imply that any or all the items are mutually
exclusive, unless expressly specified otherwise. The terms "a", "an" and "the" mean "one or
more", unless expressly specified otherwise.
[0096] A description of an embodiment with several components in communication with each
other does not imply that all such components are required. On the contrary, a variety of
optional components are described to illustrate the wide variety of possible embodiments of
the invention.
[0097] When a single device or article is described herein, it will be clear that more than one
device/article (whether they cooperate) may be used in place of a single device/article.
Similarly, where more than one device/article is described herein (whether they cooperate), it
will be clear that a single device/article may be used in place of the more than one device/article
or a different number of devices/articles may be used instead of the shown number of devices
or programs. The functionality and/or features of a device may be alternatively embodied by
one or more other devices which are not explicitly described as having such
functionality/features. Thus, other embodiments of invention need not include the device itself.
[0098] Finally, the language used in the specification has been principally selected for
readability and instructional purposes, and it may not have been selected to delineate or
circumscribe the inventive subject matter. It is therefore intended that the scope of the invention
27
be limited not by this detailed description, but rather by any claims that issue on an application
based here on. Accordingly, the embodiments of the present invention are intended to be
illustrative, but not limiting, of the scope of the invention, which is set forth in the following
claims.
[0099] While various aspects and embodiments have been disclosed herein, other aspects and
embodiments will be apparent to those skilled in the art. The various aspects and embodiments
disclosed herein are for purposes of illustration and are not intended to be limiting, with the true
scope and spirit being indicated by the following claims.
28
Referral Numerals:
Reference Number Description
101 Vehicle
103 Plurality of Sensor
105 Brake Health Monitoring Control (BHMC)
107 Vehicle Control Unit (VCU)
110 Brake Health Monitoring System (BHMS)
201 Controller
203 I/O Interface
205 Memory
207 Modules
209 Data
211 Vehicle Parameter data
213 Threshold data
215 Deceleration monitoring data
217 Response time monitoring data
219 Unintended braking detection data
221 Other data
231 Deceleration monitoring module
233 Response time monitoring module
235 Unintended braking module
237 Other modules
301 Cluster
500 Computer System
501 I/O Interface
502 Processor
503 Network Interface
504 Storage device
505 Memory
506 User Interface
507 Operating System
508 Web Browser
29
509 Communication Network
511 Input Device
512 Output Device
We Claim:
1. A brake health monitoring system (110) for a vehicle (101) comprising:
a Brake Health Monitoring Control (BHMC) unit (105);
a plurality of sensors (103) communicatively associated with the BHMC unit (105);
wherein the BHMC unit (105) is configured to:
receive sensor data related to at least one of a suspension level of the vehicle, a gradient component of the vehicle, and a pressure applied on the brake actuators of the vehicle from the plurality of sensors (103);
estimate when the vehicle (101) speed is greater than a first predefined threshold, deceleration parameters comprising at least one of,
an axle load of the vehicle based on the suspension level of the vehicle;
a gradient resistance of the vehicle based on the suspension level of the vehicle and the gradient component of the vehicle;
a brake force applied on the vehicle based on the pressure applied on the brake actuators and at least one foundation brake parameters; and
estimate a driver intended deceleration based on at least one of the estimated deceleration parameters and a pre-defined rolling resistance of the vehicle (101); and
determine a brake performance degradation when deviation of the driver intended deceleration from an actual deceleration exceeds a second predefined threshold.
2. The brake health monitoring system (110) as claimed in claim 1, further configured to
perform one or more alerting actions when the deviation is determined to be exceeding
the second predefined threshold, wherein the one or more alerting actions comprises at
least one of sending warning signals related to the brake performance degradation and
the requirement of an engine brake activation to one or more electronic devices of the
driver, and a Vehicle Control Unit (VCU) (107).

3. The brake health monitoring system (110) as claimed in claim 1, wherein the actual deceleration is determined based on wheel speed change rate detected by plurality of sensors (103) when the brake is applied to the wheel of the vehicle (101).
4. The brake health monitoring system (110) as claimed in claim 1, wherein the BHMC unit (105) is further configured to:
estimate a brake response time indicating time taken to build a brake pressure upon applying a brake of the vehicle (101), based on the sensor data; and
perform one or more alerting actions when the brake response time is determined to be exceeding a third predefined threshold.
5. The brake health monitoring system (110) as claimed in claim 1, wherein the BHMC
unit (105) further configured to:
detect braking events comprising at least one of an unintended park brake release, a loss of supply pressure, and an unintended service braking based on the sensor data;
determine occurrence of an unintended braking instance based on at least one of the estimated unintended park brake release, loss of supply pressure and unintended service braking; and
perform one or more alerting actions when the occurrence of the unintended braking instance is determined.
6. The brake health monitoring system (110) as claimed in claim 1, further comprises the Vehicle Control Unit (VCU) (107) associated with the BHMC unit (105) configured to activate the engine brake in response to the determination of the brake performance degradation.
7. A method for monitoring brake health of a vehicle (101), the method comprising:
receiving (401), by a BHMC unit (105) of a brake health monitoring system (110), sensor data related to at least one of a suspension level of the vehicle, a gradient component of the vehicle, and a pressure applied on the brake actuators of the vehicle from the plurality of sensors (103);

estimating (402), by the BHMC unit (105), when the vehicle speed is greater than a first predefined threshold, deceleration parameters comprising at least one of,
an axle load of the vehicle based on the suspension level of the vehicle;
a gradient resistance of the vehicle based on the suspension level of the vehicle and the gradient component of the vehicle;
a brake force applied on the vehicle based on the pressure applied on the brake actuators and at least one foundation brake parameters; and
estimating (403), by the BHMC unit (105), a driver intended deceleration based on at least one of the estimated deceleration parameters and a pre-defined rolling resistance of the vehicle; and
determining (404), by the BHMC unit (105), a brake performance degradation when deviation of the driver intended deceleration from an actual deceleration exceeds a second predefined threshold.
8. The method as claimed in claim 7, further comprises performing, by a BHMC unit (105), one or more alerting actions when the deviation is determined to be exceeding the second predefined threshold, wherein the one or more alerting actions comprises at least one of sending warning signals related to the brake performance degradation and the requirement of an engine brake activation to one or more electronic devices of the driver, and a Vehicle Control Unit (VCU) (107).
9. The method as claimed in claim 7, wherein the actual deceleration is determined based on wheel speed change rate detected by plurality of sensors (103) when the brake is applied to the wheel of the vehicle (101).
10. The method as claimed in claim 7, further comprises:
estimating, by the BHMC unit (105), a brake response time indicating time taken to build a brake pressure upon applying a brake of the vehicle, based on the sensor data; and
performing, by the BHMC unit (105), one or more alerting actions when the brake response time is determined to be exceeding a third predefined threshold.

11. The method as claimed in claim 7, further comprises:
detecting, by the BHMC unit (105), braking events comprising at least one of an unintended park brake release, a loss of supply pressure, and an unintended service braking based on the sensor data;
determining, by the BHMC unit (105), occurrence of an unintended braking instance based on at least one of the estimated unintended park brake release, loss of supply pressure and unintended service braking; and
performing, by the BHMC unit (105), one or more alerting actions when the occurrence of the unintended braking instance is determined.
12. The method as claimed in claim 7, further comprises activating, by the Vehicle Control
Unit (VCU) (107) associated with the BHMC unit (105), the engine brake in response
to the determination of the brake performance degradation.