Claims:I/We claim:
1. A vehicle control system (100) comprising:
at least one prop stand sensor (101) mounted on a prop stand (203) for detecting a rotational position of the prop stand (203);
at least one vehicle sensor (104) for generating at least one vehicle sensor output; and
a vehicle control unit (103) for controlling at least one vehicle operation based on a combination of the rotational position of the prop stand (203) and the at least one vehicle sensor output; and
an instrument cluster (102) for communicating one or more status conditions of a vehicle (200) corresponding to the at least one controlled vehicle operation.
2. The vehicle control system (100) as claimed in claim 1, wherein the prop stand sensor (101) is mounted at a pivot point (203a) of the prop stand (203) on a frame structure (201).
3. The vehicle control system (100) as claimed in claim 1, wherein the at least one vehicle sensor output is at least one of a vehicle speed, an engine speed, a motor speed, an ignition ON condition, an ignition OFF condition, and a battery state.
4. The vehicle control system (100) as claimed in claim 3, wherein the vehicle control unit (103) determines a state of the vehicle (200) to be one of an idle mode and a running mode, based on the at least one vehicle sensor output.
5. The vehicle control system (100) as claimed in claim 1, wherein the at least one vehicle operation comprises one or more of immobilization of the vehicle (200), activation of a power sparing mode of a battery (105) of the vehicle (200), and uninterrupted mobilization of the vehicle (200).
6. The vehicle control system (100) as claimed in claim 1, wherein the at least one prop stand sensor (101) generates a prop stand engaged state output and a prop stand retracted state output corresponding to the rotational position of the prop stand (203).
7. The vehicle control system (100) as claimed in claim 3, wherein the at least one sensor output is an ignition ON condition, the at least one prop stand sensor (101) generates a prop stand engaged state output, and the vehicle control unit (103) ascertains an idle mode of the vehicle (200), the vehicle control unit (103) performs immobilization of the vehicle (200) and activation of a power sparing mode of a battery (105) of the vehicle (200).
8. The vehicle control system (100) as claimed in claim 3, wherein the at least one sensor output is an ignition ON condition, the at least one prop stand sensor (101) generates a prop stand engaged state output, and the vehicle control unit (103) ascertains a running mode of the vehicle (200), the vehicle control unit (103) performs uninterrupted mobilization of the vehicle (200).
9. The vehicle control system (100) as claimed in claim 3, wherein the at least one sensor output is an ignition ON condition and wherein the at least one prop stand sensor (101) generates a prop stand engaged state output for more than a predetermined time in an idle mode of the vehicle, based on which the vehicle control unit (103) performs activation of a power sparing mode of a battery (105) of the vehicle (200).
10. The vehicle control system (100) as claimed in claim 1, wherein communicating the status condition of the vehicle (200) comprises at least one of displaying the status condition as LED indicator (701) in the instrument cluster (102) and conveying as at least one of an audio, a video, and a haptic indication on the instrument cluster (102) and a handheld device.
11. The vehicle control system (100) as claimed in claim 1, wherein the vehicle control unit (103) is one of a motor control unit, an engine control unit, or a controller of the instrument cluster of the vehicle (200).
12. A method for controlling at least one vehicle operation comprising:
detecting a rotational position of a prop stand (203) of a vehicle (200) by at least one prop stand sensor (101) of a vehicle control system (100), wherein the at least one prop stand sensor (101) is mounted on the prop stand (203);
generating at least one vehicle sensor output by at least one vehicle sensor (104) of the vehicle control system (100);
controlling the at least one vehicle operation by a vehicle control unit (103) of the vehicle control system (100), based on the rotational position of the prop stand (203) and the at least one vehicle sensor output; and
communicating one or more status conditions of the vehicle (200) corresponding to the at least one controlled vehicle operation of the vehicle control system (100) to a user.
13. The method as claimed in claim 12, wherein the at least one vehicle sensor output is at least one of a vehicle speed, an engine speed, a motor speed, an ignition ON condition, an ignition OFF condition, and a battery state.
14. The method as claimed in claim 13, comprising determining a state of the vehicle (200) to be one of an idle mode and a running mode based on the at least one vehicle sensor output by the vehicle control unit (103).
15. The method as claimed in claim 14, comprising:
generating an ignition ON condition as the at least one sensor output by the at least one vehicle sensor (104),
generating a prop stand engaged state output by the at least one prop stand sensor (101),
ascertaining the idle mode of the vehicle (200) by the vehicle control unit (103), and
performing immobilization of the vehicle (200) and activation of a power sparing mode of a battery (105) of the vehicle (200) by the vehicle control unit (103).
16. The method as claimed in claim 14, comprising:
generating an ignition ON condition as the at least one sensor output by the at least one vehicle sensor (104),
generating a prop stand engaged state output by the at least one prop stand sensor (101),
ascertaining the running mode of the vehicle (200) by the vehicle control unit (103), and
performing uninterrupted mobilization of the vehicle (200) by the vehicle control unit (103).
17. The method as claimed in claim 14, comprising:
generating an ignition ON condition as the at least one sensor output by the at least one vehicle sensor (104),
generating a prop stand engaged state output for more than a predetermined time by the at least one prop stand sensor (101) in the idle mode of the vehicle, and
performing activation of a power sparing mode of a battery (105) of the vehicle (200).
18. The method as claimed in claim 12, wherein communicating the status condition of the vehicle (200) comprises at least one of displaying the status condition as LED indicator (701) in an instrument cluster (102) and conveying as at least one of an audio, a video, and a haptic indication on the instrument cluster (102) and a handheld device.
, Description:TECHNICAL FIELD
[0001] The present subject matter relates to a control system of a vehicle. More particularly and not exclusively, it pertains to a vehicle control system controlling operation of a two-wheeled vehicle, based on a position of a prop stand of the vehicle.

BACKGROUND
[0002] Conventionally, two types of vehicle resting devices are used for placing a two wheeled vehicle in a standing state, namely a prop stand and a centre stand. Both these vehicle resting devices undergo static loading and aid in stability of the vehicle when the vehicle is vertically placed. The prop stand allows a two wheeled vehicle to lean on its left side, when viewed from a rider’s perspective, while the centre stand allows the two wheeled vehicle to be kept upright without leaning against another object. The prop stand is provided for balancing vehicle during vehicle parked condition and is preferred for its quick retraction and ease of application, compared to the centre stand.

BRIEF DESCRIPTION OF DRAWINGS
[0003] The detailed description is described with reference to the accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0004] Fig.1 exemplarily illustrates a block diagram of a vehicle control system of a vehicle, as per an embodiment of the present invention;
[0005] Fig. 2 exemplarily illustrates a partial left side perspective view of a bottom section of a frame structure of the vehicle;
[0006] Figs. 3A-3C exemplarily illustrate different views of a prop stand sensor mounted on a prop stand of the vehicle.
[0007] Fig. 4 exemplarily illustrates a flowchart comprising steps executed by the vehicle control system for controlling at least one vehicle operation;
[0008] Fig. 5 exemplarily illustrates a flowchart showing steps for activating a battery sparing mode by the vehicle control unit;
[0009] Fig. 6 exemplarily illustrates a flowchart showing steps for immobilization of the vehicle and uninterrupted mobilization of the vehicle, by the vehicle control unit; and
[00010] Figs. 7A-7C exemplarily illustrate an instrument cluster of the vehicle control system, displaying status conditions of the vehicle based on the controlled vehicle operation.

DETAILED DESCRIPTION OF THE INVENTION
[00011] Most modern two wheelers come with both a prop stand and a centre stand. On daily use basis, a rider usually opts for application of the prop stand when compared to the centre stand due to its easy access and simple deployment. The prop stand is typically mounted to a frame structure of the vehicle using a prop stand mounting bracket. A pivot shaft extends laterally with respect to the frame structure and the prop stand is pivotable about the axis of the pivot shaft. The prop stand in its inclined position must effectively balance the weight of the vehicle in the parked condition and any failure in bearing the weight, could lead to imbalance and toppling of vehicle, causing damage to vehicle parts and also discomfort to the user of the vehicle.
[00012] Also, if the prop stand is engaged at the start of a ride from parking position of the vehicle i.e. the user misses to disengage the prop stand before movement, the engaged prop stand may hinder with the road and may result in damage to the vehicle and a fall or a crash of the vehicle. To avoid such untoward accidents, there is a need to sense the position of the prop stand at the start of the vehicle and immobilize the vehicle, in case the prop stand is left engaged at the start.
[00013] Also, consider the vehicle is in prolonged parking condition using the prop stand with the battery powered ON. That is, the electrical loads are supplied with battery power while the prop stand is engaged, the battery discharges continuously and this may drain out shortly. There is need to avoid such wastage of battery energy, in case the rider forgets to turn OFF the vehicle while the prop stand is engaged beyond a predetermined period of time.
[00014] Another scenario of inadvertent engagement of the prop stand can happen during the course of the ride due to an obstacle (boulders) on the road or by the rider himself/herself during the course of the ride. In existing vehicles, on sensing the engagement of the prop stand, the vehicle is immobilized immediately in such scenarios. Sudden immobilization of the vehicle may lead to serious damage to the vehicle and to the rider due to a fall, crash, or an accident, since the vehicle is running at a certain speed. There is a need to alert the rider and avoid sudden immobilization the vehicle in such running condition, in case the prop stand is accidently engaged.
[00015] Therefore, there exists a need for a vehicle control system that controls operation of the vehicle, in a stationary condition and a running condition, based on a position of a prop stand for protection and safety of the rider and the vehicle and prevention of unnecessary wastage of power in the vehicle, while overcoming all problems disclosed above as well as other problems of known art.
[00016] The present subject matter is further described with reference to accompanying figures. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[00017] In order to overcome the above stated problems, a novel way of a prop stand detection and safety vehicle operation control based on the prop stand status is implemented. As per the present invention, a vehicle control unit senses the prop stand sensor voltage and analyses the voltage value to determine whether the prop stand is engaged or retracted. This will allow the vehicle control unit to take the necessary action of vehicle mobilization during prop stand retracted state and sending the vehicle to a safe idle mode during vehicle prop stand engaged state.
[00018] In an embodiment of the present invention, a vehicle control system of a vehicle is disclosed. The vehicle control system comprises at least one prop stand sensor mounted on a prop stand for detecting a rotational position of the prop stand; at least one vehicle sensor for generating at least one vehicle sensor output; a vehicle control unit for controlling at least one vehicle operation, based on the rotational position of the prop stand and the at least one vehicle sensor output; and an instrument cluster for communicating, to a user, one or more status conditions of the vehicle corresponding to the controlled vehicle operation.
[00019] The prop stand sensor is mounted at a pivot point of the prop stand on a vehicle frame. The at least one vehicle sensor output is at least one of a vehicle speed, an engine speed, an ignition ON condition, an ignition OFF condition, and a battery state. In an embodiment, the vehicle control unit determines a state of the vehicle to be one of an idle mode and a running mode, based on the at least one vehicle sensor output. The at least one vehicle operation comprises immobilization of the vehicle, activation of a power sparing mode of a battery of the vehicle, and uninterrupted mobilization of the vehicle. The at least one prop stand sensor generates a prop stand engaged state output and a prop stand retracted state output corresponding to the rotational position of the prop stand. In an embodiment, wherein the at least one sensor output is an ignition ON condition, wherein the at least one prop stand sensor generates a prop stand engaged state output, and wherein the vehicle control unit ascertains the idle mode of the vehicle, the vehicle control unit performs immobilization of the vehicle and activation of power sparing mode of a battery of the vehicle. In another embodiment, wherein the at least one sensor output is an ignition ON condition, wherein the at least one prop stand sensor generates a prop stand engaged state output, and wherein the vehicle control unit ascertains the running mode of the vehicle, the vehicle control unit performs uninterrupted mobilization of the vehicle. In an embodiment, wherein the at least one sensor output is an ignition ON condition and wherein the at least one prop stand sensor generates a prop stand engaged state output for more than a predetermined time, the vehicle control unit performs activation of a power sparing mode of a battery of the vehicle. Communicating the status condition of the vehicle comprises at least one of displaying the status condition as LED indicator in the instrument cluster and conveying as at least one of an audio, a video, and a haptic indication on the instrument cluster and a handheld device. The vehicle control unit may be a motor control unit, an engine control unit, or a controller of the instrument cluster.
[00020] In another embodiment of the present invention, a method for controlling at least one vehicle operation is disclosed. The method comprises the steps of: detecting a rotational position of a prop stand of a vehicle by at least one prop stand sensor of a vehicle control system, generating at least one vehicle sensor output by at least one vehicle sensor of the vehicle control system, controlling at least one vehicle operation by a vehicle control unit of the vehicle control system, based on the rotational position of the prop stand and the at least one vehicle sensor output, and communicating one or more status conditions of the vehicle corresponding to the at least one controlled vehicle operation to a user by the vehicle control unit. The at least one prop stand sensor may be mounted on the prop stand.
[00021] In an embodiment, the at least one vehicle sensor output is at least one of a vehicle speed, an engine speed, an ignition ON condition, an ignition OFF condition, and a battery state. In an embodiment, the method comprises a step of determining a state of the vehicle to be one of an idle mode and a running mode, based on the at least one vehicle sensor output by the vehicle control unit. In an embodiment, the method comprises a step of: generating an ignition ON condition as the at least one sensor output by the at least one vehicle sensor, generating a prop stand engaged state output by the at least one prop stand sensor, ascertaining the idle mode of the vehicle by the vehicle control unit, and performing immobilization of the vehicle and activation of power sparing mode of a battery of the vehicle by the vehicle control unit in the idle mode.
[00022] In another embodiment, the method comprises a step of generating an ignition ON condition based on the at least one sensor output by the at least one vehicle sensor, generating a prop stand engaged state output by the at least one prop stand sensor, ascertaining the running mode of the vehicle by the vehicle control unit, and performing uninterrupted mobilization of the vehicle by the vehicle control unit.
[00023] Fig. 1 exemplarily illustrates a vehicle control system 100 for controlling at least one vehicle operation in a vehicle. The vehicle may be a two wheeled vehicle driven by an IC engine, a traction motor, or a combination of an IC engine and a traction motor. The vehicle may be a scooter, a motorcycle, a unicycle, any saddle type vehicle, any straddle type vehicle, etc. The vehicle control system 100, comprises at least one prop stand sensor 101 mounted on a prop stand of the vehicle. The prop stand sensor 101 detects rotational position of the prop stand. The vehicle comprises a prop stand, either alone or in addition to a centre stand, wherein the prop stand is attached to a lower section of a frame structure. The prop stand sensor 101 is rotatably mounted on a pivot shaft mounted on the frame structure of the vehicle. The prop stand may be engaged to park the vehicle and disengaged/retracted to remove vehicle from parking position. Based on the rotational position of the prop stand, the prop stand sensor 101 generates a prop stand engaged state output and a prop stand retracted state output.
[00024] The vehicle control system 100 comprises one or more vehicle sensors 104, such as, a vehicle speed sensor to measure vehicle speed, an engine speed sensor to measure an engine speed, a motor speed sensor to measure motor speed, voltage and current sensors to measure amount of voltage and current supplied by one or more batteries, such as, 105 in the vehicle to one or more electrical loads 106, and an ignition detection sensor. These vehicle sensors 104 generate vehicle sensor output, such as, the vehicle speed, the engine speed, ignition ON condition, ignition OFF condition, and a battery state, such as discharging state, charging state. The battery discharge state as the vehicle sensor output corresponds to an indication of presence of a current and voltage in the wiring harness between the battery 105 and the electrical loads 106. The ignition ON condition and ignition OFF condition corresponds to an indication from an ignition switch in the vehicle being in ON/OFF condition. In an IC engine vehicle, the Ignition ON/OFF condition corresponds to the occurrence of ignition of the air fuel mixture in the cylinder of the IC engine. However, in an electric vehicle or a hybrid vehicle, the ignition ON/OFF condition means the battery 105 is powered ON/OFF to drive the vehicle.
[00025] The vehicle control system 100 comprises a vehicle control unit 103 that receives the rotational position of the prop stand and the vehicle sensor output and controls at least one vehicle operation. The vehicle control unit 103, based on the vehicle sensor output, determines a state of the vehicle, such as, an idle mode of the vehicle or a running mode of the vehicle. In the idle mode of the vehicle, the vehicle speed is about 0 kmph and the vehicle is stationary while the ignition is in ON condition. In such an idle mode, in an IC engine vehicle or an electric vehicle, the electrical loads 106 in the vehicle are powered by the battery 105 and the battery 105 continues to discharge. In the running mode of the vehicle, the vehicle speed is greater than 0 kmph and the vehicle is in motion. In an IC engine vehicle, the engine speed will be greater than a threshold and in a traction motor driven electric vehicle, the motor speed will be greater than a threshold.
[00026] Based on the ignition ON/OFF condition, the vehicle speed, and the engine speed, the vehicle control unit 103 ascertains the idle mode and the running mode of the vehicle. The vehicle control unit 103 may receive the vehicle sensor output directly from the vehicle sensors 104 as exemplarily illustrated in Fig.1. In an embodiment, the vehicle control 103 unit may receive the vehicle speed, the motor speed, ignition ON/OFF condition from a motor control unit (not shown) in the electric or hybrid vehicle. In an IC engine based vehicle, the vehicle control unit may receive the vehicle speed, the engine speed, ignition ON/OFF condition from an electronic control unit of the engine management system (EMS-ECU). The battery discharge state is obtained from a battery management system (BMS) (not shown) of the battery 105. The vehicle sensor output is made available on a communication bus, such as, a CAN bus of the vehicle and each of the vehicle sensors 104 and the prop stand sensor 101, the motor control unit, the EMS-ECU, the BMS, and the vehicle control unit 103 has interfacing capabilities to interface with the communication bus for their respective functions. In an embodiment, the vehicle control unit 103 may be embodied wholly or partially in the motor control unit or the EMS-ECU of the vehicle.
[00027] The vehicle control unit 103 controls different operations in the vehicle. The different vehicle operations may be immobilization of the vehicle, activation of a power sparing mode of the battery 105, or uninterrupted mobilization of the vehicle. That is, based on the determined state of the vehicle and the rotation position of the prop stand, the vehicle control unit 103 performs at least one of the different vehicle operations mentioned above as will be explained with Figs. 4-6. The vehicle control system 100 further comprises an instrument cluster or a display interface 102 to display one or more status conditions of the vehicle. The vehicle control unit 103, based on the vehicle operation that is controlled, displays corresponding status conditions on the instrument cluster 102. For example, in case of immobilization of the vehicle by the vehicle control unit 103, the vehicle control unit 103 may restrict movement of the vehicle by restricting combustion in the engine, applying brakes of the vehicle, restricting power supply to the motor, turn off ignition of the vehicle, turn off battery 105 of the vehicle, etc. The status conditions of the vehicle, when the vehicle is immobilized by the vehicle control unit 103, when the prop stand is engaged, may be brakes are applied or ignition turned OFF, or battery turned OFF. These status conditions are appropriately represented on the instrument cluster 102 to alert and notify the rider about the current status of the vehicle. The instrument cluster 102 may also suggest a next action to be performed by the rider to overcome the immobilization of the vehicle as shown in Fig. 7C. The power sparing mode of the battery 105 refers to the sleep mode or intermittent turn off of the battery 105 and/or sleep mode of the BMS of the battery 105 to stop the battery 105 from discharging. The status condition of the vehicle when the power sparing mode of the battery 105 is activated is battery turned OFF and the prop stand is engaged. This status condition is appropriately represented on the instrument cluster 102. The controlled operation, i.e. uninterrupted mobilization of the vehicle, means if the vehicle is mobile or running condition, the vehicle control unit 103 allows the vehicle to remain mobile in any of the ride modes (power and economy) and does not interrupt navigation of the vehicle. The status condition of the vehicle during this controlled operation is one or more vehicle parameters such as speed, distance covered, ride mode (power or economy), battery conditions, ride details, etc., call and SMS alerts and notifications from a connected user device, and the prop stand engaged. These status conditions are appropriately indicated on the instrument cluster 102. The instrument cluster 102 may be a TFT cluster or an LCD/LED display screen with touch capabilities and capable of displaying different interfaces and icons for different status conditions.
[00028] Fig. 2 exemplarily illustrates a partial left side perspective view of a bottom section of the frame structure 201 of the vehicle 200. Exemplarily illustrated is a prop stand 203 in a retracted position, in addition to a centre stand 202 of the vehicle 200. The prop stand 203, also known as a side stand, is provided on a left side of the vehicle 200, when viewed from the rider’s perspective. The prop stand 203 and the centre stand 202 are both attached to the bottom section of the frame structure 201. The prop stand 203 is pivotably attached to the frame structure 201 and can be engaged for its end to touch the ground and take the load of the vehicle 200, on being pushed by the rider’s leg from the retracted position. The prop stand 203 pivots about a pivot shaft (not labelled) attached to the frame structure 201. The prop stand sensor 101 is mounted at a pivot point 203a of the prop stand 203 and it detects the rotation of the prop stand 203 from being in an engaged position and a retracted position. The prop stand sensor 101 is connected to the wiring harness of the vehicle 200 to be connected to the vehicle control unit 103. In Fig. 2, only one prop stand sensor 101 is shown. However, in an embodiment, multiple prop stand sensors, such as, 101 may be installed to improve reliability in sensing the rotational position of the prop stand 203.
[00029] Figs. 3A-3C exemplarily illustrate different views of the prop stand sensor 101. The prop stand sensor 101 comprises a sensor body 301, a connecting wire 302 connecting the sensor body 301 to a coupler 304. The coupler 304 is connected to the wiring harness of the vehicle 200 to connect the prop stand sensor 101 to the vehicle control unit 103. The sensor body 301 as per an embodiment is horse shoe shaped and is mounted on the pivot shaft of the prop stand 203 and seamlessly merged into the mounting of the prop stand 203 on the pivot shaft. For holding the coupler 304 in place and avoid slacking of the connecting wire 302 from the frame structure 201, a loop holder 303 is provided that can be inserted into a mounting provision (not labelled) on the frame structure 201.
[00030] The sensor body 301 comprises an external horse shoe shaped cover and an inductive sensor and associated electrical components within the external cover. The sensor body 301 is supplied with battery power supply to operate via the connecting wire 302 to generate 12V output voltage during engaged condition of the prop stand 203 and 0V during retracted position of the prop stand 203. The 12V and the 0V are the prop stand sensor output fed to the vehicle control unit 103.
[00031] Fig. 4 exemplarily illustrates a flowchart comprising steps executed by the vehicle control system 100 for controlling at least one vehicle operation. As exemplarily illustrated, at step 401, the prop stand sensor 101 detects the rotational position of the prop stand 203 and generates an output corresponding to the prop stand engaged state and an output corresponding to the prop stand retracted state based on the rotational position of the prop stand 203. At step 402, the vehicle sensors 104 generate vehicle sensor output and transmit to the vehicle control unit 103 via the communication bus, such as, the CAN bus. At step 403, the vehicle control unit 103 controls at least one vehicle operation based on the output of the prop stand sensor 101 and the vehicle sensor output. In an embodiment, the vehicle control unit 103 first determines the state of the vehicle 200, such as, idle mode or running mode of the vehicle, based on the vehicle sensor output and then controls the vehicle operation.
[00032] In an embodiment, where the ignition ON condition is a vehicle sensor output, the prop stand engaged state output is received by the vehicle control unit 103 from prop stand sensor 101, the vehicle 200 is in idle mode as determined by the vehicle control unit 103, the vehicle control unit 103 immobilizes the vehicle 200 and activates power sparing mode of the battery 105 and its associated electronics. This immobilization of the vehicle 200 is performed instantaneously and the status condition of the vehicle 200, such as, the prop stand engaged state output is displayed in the instrument cluster 102. To immobilize the vehicle 200, that is a traction motor based vehicle, in an embodiment, the vehicle control unit 103 forces the motor control unit to not run the motor. To immobilize an IC engine based vehicle, in an embodiment, the vehicle control unit 103 turns off the ignition of the vehicle 200 and applies brakes. In an alternate embodiment, the vehicle control unit 103 activates the power sparing mode of the battery 105 on lapse of a predetermined time period of determination of the state of the vehicle 200 to be idle mode.
[00033] In another embodiment, where the ignition ON condition is a vehicle sensor output, the prop stand engaged state output is received by the vehicle control unit 103 from prop stand sensor 101, the vehicle 200 is in running mode as ascertained by the vehicle control unit 103, the vehicle control unit 103 does not immobilize the vehicle 200 and allows the vehicle 200 to run, unless intentionally stopped by the rider and prevents inadvertent stoppage of the vehicle 200. Thus, the vehicle control unit 103 performs uninterrupted mobilization of the vehicle 200 and indicates to the user about the engagement of the prop stand 203 in the instrument cluster 102 for warning him/her about the accidental engagement of the prop stand 203. However, if the rider halts the vehicle 200, the vehicle control unit 103 will ascertain the idle mode of the vehicle 200 as the vehicle speed is 0 kmph and thus immobilizes the vehicle 200 until the prop stand 203 is retracted.
[00034] In an embodiment, where the ignition ON condition is a vehicle sensor output, the prop stand retracted state output is received by the vehicle control unit 103 from the prop stand sensor 101, the vehicle 200 is in running mode as ascertained by the vehicle control unit 103, the vehicle control unit 103 does not immobilize the vehicle 200 and allows the vehicle 200 to run. In another embodiment, where the ignition ON condition is a vehicle sensor output, the prop stand retracted state output is received by the vehicle control unit 103 from the prop stand sensor 101, the vehicle 200 is in idle mode as ascertained by the vehicle control unit 103, the vehicle control unit 103 does not immobilize the vehicle 200 and allows the vehicle 200 to be mobilized. If in case, the vehicle 200 continues to be in the idle mode for more than a predetermined time, the vehicle control unit 103 activates the power sparing mode of the battery 105.
[00035] At step 404, the vehicle control unit 103 communicates status conditions of the vehicle 200 on the instrument cluster 102, corresponding to the controlled vehicle operation. In an embodiment, when the vehicle control unit 103 does not interrupt the mobilization of the vehicle 200, the vehicle control unit 103 displays the side stand engaged state output as an indicator on the instrument cluster 102 warning the rider during the course of ride to be careful and push the prop stand 203 to retract it. In an alternate embodiment, the warning could be a combination of audio and visual alarm to notify the user. As per an additional embodiment, the warning could be relayed to an external device e.g., a vibration or audio signal on a handheld device of the vehicle, an audio-video or tactile or haptic indication on a helmet of the user, etc.
[00036] Fig. 5 exemplarily illustrates a flowchart showing steps for activating power sparing mode of the battery 105 by the vehicle control unit 103. At step 501, the vehicle control unit 103 determines whether one of the vehicle sensor outputs is Ignition ON condition. If the vehicle sensor output comprises the Ignition ON condition, at step 502, the vehicle control unit 103 determines whether the prop stand 203 is engaged. That means, the vehicle control unit 103 determines whether the prop stand engaged state output is obtained from the prop stand sensor 101. If prop stand engaged state output is obtained, at step 503, the vehicle control unit 103 determines if the prop stand engaged state output is present for more than a predetermined time. That is, the vehicle control unit 103 determines whether the prop stand 203 is engaged for more than TD seconds. Since, the prop stand 203 is engaged for more than TD seconds, it indicates that the vehicle 200 is stationary with the ignition ON for a prolonged duration. In such a scenario, at step 504, the vehicle control unit 103 instructs the battery 105 and its associated components to go into sleep or disable mode to save the battery energy. If at step 502, the vehicle control unit 103 determines that the prop stand engaged state output is not obtained from the prop stand sensor 101, at step 505, the vehicle control unit 103 confirms whether the vehicle 200 is in running mode based on the vehicle sensor output and takes no action. Also, if at step 503, the vehicle control unit 103 determines that the prop stand engaged state output is obtained for less than or equal to TD seconds, the vehicle control unit 103 confirms the vehicle 200 is in idle mode for less than TD seconds and take no action thereby enabling the vehicle 200 to remain in running mode.
[00037] Fig. 6 exemplarily illustrates a flowchart showing steps for immobilization of the vehicle 200 and uninterrupted mobilization of the vehicle 200 by the vehicle control unit 103. At step 601, the vehicle control unit 103 determines whether one of the vehicle sensor outputs is Ignition ON condition. If the vehicle sensor output comprises the Ignition ON condition, at step 602, the vehicle control unit 103 determines whether prop stand engaged state output is obtained from the prop stand sensor 101. If prop stand engaged state output is obtained, at step 603, the vehicle control unit 103 determines the state of the vehicle 200 to be idle mode and at step 604, the vehicle control unit 103 performs immobilization of the vehicle 200 along with activation of power sparing mode of the battery 105.
[00038] If at step 602, the vehicle control unit 103 determines that the prop stand engaged state output is not obtained from the prop stand sensor 101, at step 605, the vehicle control unit 103 determines the state of the vehicle 200 to be running mode based on the vehicle sensor output. Even during the running mode of the vehicle 200, the vehicle control unit 103 continues to monitor/ check for the prop stand sensor 101 output and at step 606, the vehicle control unit 103 determines whether prop stand engaged state output is obtained from the prop stand sensor 101. If the prop stand 203 is engaged, as obtained from the prop stand engaged state output, at step 607, the vehicle control unit 103 determines whether the vehicle 200 continues to be in running condition even if the prop stand engaged state output is obtained. If at step 607, the vehicle control unit 103 determines the vehicle 200 is in running condition, the vehicle control unit 103 allows the vehicle 200 to continue running and performs uninterrupted mobilization of the vehicle 200. If at step 607, the vehicle 200 is not in running condition, the vehicle control unit 103 confirms whether the state of the vehicle 200 is an idle mode of the vehicle 200 at step 603. Since at step 603, the vehicle control unit 103 determines the state of the vehicle 200 to be idle mode, subsequently at step 604, the vehicle control unit 103 performs immobilization of the vehicle 200 along with activation of the power sparing mode of the battery 105.
[00039] Figs. 7A-7C exemplarily illustrate the instrument cluster 102 displaying status conditions of the vehicle 200 based on the controlled vehicle operation by the vehicle control unit 103. As can be seen in Fig. 7A, when the prop stand engaged state output is obtained from the prop stand sensor 101 and the ignition ON condition is obtained from the vehicle sensors 104, the prop stand engaged state output is displayed as a telltale symbol by means of an LED indicator 701 on the instrument cluster 102. Only when the prop stand 203 is retracted, the indicator 701 on the instrument cluster 102 is disabled as shown in Fig. 7B. When the prop stand 203 is engaged and the vehicle control unit 103 ascertains that the vehicle 200 is in idle mode, the vehicle control unit 103 immobilizes the vehicle 200 and displays the interface image (702) as shown in Fig. 7C that provides suggestion to the rider to start the vehicle 200 by pressing the Brake and the Mode switch as indicated. However, when the rider tries to start by actuating the brake and the mode switch, without retracting the prop stand 203, the vehicle control unit 103 does not let the rider to move the vehicle 200 and continues to immobilize it and the prop stand engaged state output is indicated by a telltale (701) on the instrument cluster 102 to alert the rider. If the vehicle 200 is in immobilized state for a predetermined time, the vehicle control unit 103 also activates power sparing mode of the battery 105 and its associated electronic components. If prior to starting the vehicle 200 by actuating the brake and the mode switch, the rider retracts the prop stand 203, the vehicle control unit 103 permits mobilization of the vehicle 200. If during the running condition of the vehicle 200, the prop stand engaged state output is indicated on the instrument cluster 102, the vehicle control unit 103 allows the rider to change ride modes (power mode or economy mode) of the vehicle 200 and drive the vehicle 200. Only when the vehicle 200 is intentionally stopped by the rider, the vehicle control unit 103 will immobilize the vehicle 200 until the prop stand 203 is retracted.
[00040] The vehicle control system for controlling the vehicle operation as disclosed in the present invention provides the following technical advancement in the field of vehicle control: Intelligent immobilization of the vehicle by the vehicle control unit prevents the rider to ride the vehicle and ensures the safety of the vehicle and rider. The mounting of the prop stand sensor on the prop stand of the vehicle at the pivot point is seamless. The communication of the status conditions on the instrument cluster or any through any other audio-video / haptic feedback during both running mode and idle mode of the vehicle makes it an easy and comfortable indication to the rider of the vehicle. During the running condition of the vehicle, the engagement of the prop stand is non-distractive and during the stationary condition of the vehicle, it is distractive to gain attention of the rider and not allow the vehicle to move, when the prop stand is engaged during Ignition ON condition.
[00041] Under vehicle standstill condition, if the prop stand is out, the vehicle is forced to remain in Idle mode under which application of throttle does not make the vehicle to move. During this process, the vehicle control unit initiates a vehicle idle mode through Motor controller/ EMS-ECU via CAN message. Also during vehicle Ignition ON and stand still condition when the prop stand is engaged, the vehicle control unit sends the status to instrument cluster which will be displayed to warn the user. Under vehicle running condition, if the prop stand is intentionally / unintentionally out, the vehicle speed and running condition is not affected. Prop stand condition is neglected during the vehicle running condition, as the sudden reduction in the vehicle speed during running condition is hazardous for the rider. Once the vehicle comes to standstill the vehicle goes to Idle mode hence preventing further movement of vehicle until the prop stand is pushed in / retracted. This feature also adds safety to customer by preventing the vehicle to be mobile by making the motor control unit to idle mode when prop stand is engaged.
[00042] Under vehicle stand still condition if the ignition is ON and prop stand is engaged, the vehicle control unit will keep on monitoring prop stand status, and ignition status for certain period of time (Td). If still the user does not switch OFF the Ignition, vehicle control unit will direct battery to go into sleep mode or switch itself OFF to stop battery draining. Once the user switches OFF and then switches ON the ignition the vehicle will again will be ready to drive after performing above intelligent safety check. This feature saves power of the battery and prevents the battery from draining.
[00043] Improvements and modifications may be incorporated herein without deviating from the scope of the invention.
LIST OF REFERENCE NUMERALS
100- Vehicle control system
101-Prop stand sensor
102-Instrument Cluster
103-Vehicle Control Unit
104-Vehicle Sensors
105-Battery
106-Electrical Loads
200-Vehicle
201-Frame Structure
202-Centre Stand
203-Prop Stand
203a-Pivot Point
301-Sensor Body
302-Connecting Wire
303-Loop Holder
304-Coupler
701-LED indicator
702- Suggestion