Description:TECHNICAL FIELD
[0001] The present subject matter relates generally to a two-wheeled vehicle. More particularly but not exclusively, the present invention relates to a method of a control unit for a display device for the two-wheeled vehicle.
BACKGROUND
[0002] The two-wheeled vehicle in general has a display device to indicate and to communicate various parameters with respect to the one or more devices in the vehicle. In a conventional vehicle, the display device assembly may include a speedometer to indicate the current speed of the traversing vehicle to the user. The speedometer can be any one of an analog speedometer, a digital speedometer, and a semi-digital speedometer. The semi-digital speedometer includes one or more control switches on a top surface for use of the rider. The one or more control switches are suitably positioned on the surface of the handlebar cover for easy accessibility of the user. The one or more control switches are required for setting certain features like trip meter, different modes of the vehicle, speed indications, and the like. The display device assembly is generally mounted to the handlebar assembly cover.
BRIEF DESCRIPTION OF THE 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] Figure 1 shows a left side perspective view of an exemplary two-wheeled type vehicle.
[0005] Figure 2 illustrates a block diagram of a system for controlling a display device and its functionality.
[0006] Figure 3 illustrates a flow diagram for a method of controlling a display device as per a first embodiment of the present invention.
[0007] Figure 4 illustrates a flow diagram for a method of controlling a display device as per a second embodiment of the present invention.
DETAILED DESCRIPTION
[0008] In the existing automobiles, the speedometer is used to display necessary vehicle information.
[0009] The low battery indication in the current vehicle will be activated only when the vehicle battery voltage is lower than the predefined threshold (example: when the battery voltage is lower than 11.5V for 2 seconds the low battery indication will be ON)
[00010] In the above-mentioned prior arts, when the battery voltage is lower than threshold limits the controller disconnects a set of predefined loads / disconnects loads one by one based on the priority with a warning message.
[00011] This creates issue when the user needs to operate vehicle loads. Instead of the controller disconnecting loads, we can display a warning message of the speedometer to switch OFF ignition key / start the engine to prevent battery discharge compliant.
[00012] On the other aspect features of the vehicle are increasing as technology and customer requirements increased resulting in higher current consumption of electronic components
[00013] If the user switches on the ignition and left the vehicle without starting for longer duration the battery will be discharged. It can be prevented by two different ways.
[00014] When vehicle is ON but the engine is not on – battery discharges rapidly due to ancillary accessories (LOADS).
[00015] In some of the existing art, a controller which receives the status of battery, engine, Ignition key and control a plurality of loads connected to it. If the controller senses the ignition key is ON and the Battery voltage is less than a predetermined value, then the controller disconnects the loads one by one based on the importance of the load and displays a message that the particular load has been disconnected since the battery level is low. The user may need certain loads to be operated based on the necessity which cannot be operated because the controller would have considered it has low priority load and discounted it.
[00016] A method for preventing a battery discharge of a vehicle equipped with telematics, where in the telematics unit monitors the battery voltage and if the voltage is below the first threshold voltage a set of loads are disabled. And if the voltage is below the second threshold voltage additional set of loads are disabled. This is done in engine off condition and the first load is of lower priority compared to second load. The user may need certain loads to be operated based on the necessity which cannot be operated because the system would have considered it has low priority load and discounted it.
[00017] A method for preventing battery discharge in a vehicle which uses a voltage sensor, a relay, a power stage sensor, a controller. The controller outputs a warning message and turns off a relay after sending command to respective ECU when the battery voltage is below the first threshold voltage. A controller can monitor battery voltage internally rather than having a separate voltage sensor and the user may also need some necessary loads to be activated but the controller would have disconnected it using a relay.
[00018] Therefore, to address the problems are established above and the problems in the prior arts, the following solution summary is proposed.
[00019] Based on battery voltage: If engine has not starter based on the whether the voltage is lower than the threshold limit / based on whether the difference of voltage after self-check of vehicle and current vehicle battery voltage is within the predefined limit or not. If the battery voltage is reduced greater than the predefined limit a warning / alert message can be displayed to the customer to turn off the ignition key or to switch on the engine.
[00020] Based on time: In case any additional loads are actuated at Ignition ON, the speedometer senses the loads and measures the time duration between ignition ON and Engine OFF, if it exceeds predefined threshold limit a warning / alert message can be displayed to the customer to turn off the ignition key or to switch on the engine and the pre-determined threshold limit depends on the loads that are actuated.
[00021] The vehicle load will be switched on and controllers will wake up only when the Ignition key of the vehicle is turned ON.
[00022] The connected controllers will have internal voltage sensing circuits to perform necessary operation if the operating voltage is within the limit.
[00023] Since speedometer also a controller which can detect battery voltage to prevent it from over voltage and under voltage limits.
[00024] And this sensed voltage can be used to provide warnings / alert when based on the vehicle battery level.
[00025] Show a list of loads based on priority, that the user can opt to shut down.
[00026] Priority based on inputs from sensors such as: Ambient light sensor, CAN data – status of load actuation (brake lamp, hazard lamps are ON)
[00027] The Functional details include:
[00028] Speedometer: The speedometer is used to display necessary vehicle information such as RPM, speed, gear indication, fuel level, tell-tales, other homologation requirements through CAN/ LIN/ hardwire communication.
[00029] In addition to that smart connect Bluetooth features such as navigation, calls, messages, music streaming etc.
[00030] It has inbuilt drives to interface switch inputs 4-way navigation switch, brake switch, hazard switch, turn signal lamp switch, sensor input and to drive body control and light control functions such as TSL, Hazard, brake lamp etc.
[00031] The speedometer has an internal micro controller / processor for performing several functions and to display vehicle information to the user.
[00032] It comprises several IO’s including drivers, signal lines, power lines and communication lines.
[00033] The speedometer will wake up only after it receives ignition key input and continuously monitors battery voltage to ensure its functionality.
[00034] Communication lines (CAN) in the vehicle is also interfaced with other vehicle controller such as ABS, EMS ECU etc, through which the controllers share necessary information’s to each other for performing certain functions.
[00035] The internal drivers in the speedometer can be high side or low side drivers which are user to drive various lighting and body related functions such as flashing of turn signal lamps, brake lamps etc.
[00036] The vehicle load will be switched on and controllers will wake up only when the Ignition key of the vehicle is turned ON.
[00037] The connected controllers will have internal voltage sensing circuits to perform necessary operation if the operating voltage is within the limit.
[00038] Since speedometer also a controller which can detect battery voltage to prevent it from over voltage and under voltage limits.
[00039] And this sensed voltage can be used to provide warnings / alert when based on the vehicle battery level.
[00040] Fig. 1 shows a left side perspective view of an exemplary two-wheeled type vehicle. The vehicle has a body frame assembly made up of several tubes welded together which usually supports the body of the said vehicle. The vehicle has a steerable front wheel 101 and a driven rear wheel 102. The body frame assembly of the vehicle is an elongated structure, which typically extends from a forward end to a rearward end of the vehicle. The said frame assembly includes a head tube 104, a main frame 111 and also may have a sub-frame. The sub-frame is attached to the main frame using appropriate joining mechanism. The frame assembly is covered by a plurality of vehicle body covers including a front panel 103, a rear cover (not shown), a left front bottom panel 105, and a side panel 106.
[00041] A handlebar assembly 109 and a seat assembly 110 are supported at opposing ends of the frame assembly and a generally open area is defined there between known as a floorboard 108 which functions as a step through space. The seat for a driver and a pillion is placed forward to a fuel tank and rear side of THE floorboard 108. A front fender 107 is provided above the front wheel 101 to avoid the vehicle 100 and its occupants from being splashed with mud. Likewise a rear fender 112 is placed between fuel tank (not shown) and the rear wheel 102, and to the outer side in the radial direction of the rear wheel 102. The rear fender 112 inhibits rain water or the like from being thrown up by the rear wheel 102. A front cover assembly 115 is disposed rearwardly to the floorboard 108.
[00042] Suspensions are provided for comfortable steering of the vehicle on the road. A front suspension assembly is connected to a front-fork 118. The rear suspension assembly comprises of at least one rear suspension 117 preferably on the left side of the vehicle. However, a vehicle with two rear suspensions, namely on the left side and the right side is also possible. For the safety of the user and in conformance with the traffic rules, a headlamp assembly 116 in the front portion of the vehicle and a taillight 113 in the rear portion of the vehicle is also provided.
[00043] Figure 2 illustrates a block diagram of a system for controlling a display device and its functionality. The figure shows the part level block diagram of the invention in which the speedometer is connected to battery and ignition key. The speedometer will wake up only when the ignition key input is received. And other vehicle controllers such as EMS ECU, ABS etc share necessary information’s through vehicle CAN bus which can be used to perform particular functions and to display information’s on the speedometer.
[00044] Figure 3 illustrates a flow diagram for a method of controlling a display device as per a first embodiment of the present invention. The speedometer in the vehicle senses the magnitude of time duration after Ignition ON and Engine OFF.
[00045] If the time duration exceeds the threshold limit, a warning message will be displayed on the speedometer. The threshold limit depends on the loads that are active after Ignition ON.
[00046] The speedometer in the vehicle senses the battery voltage (V1) at a predefined duration after self-check.
[00047] When the voltage after self-check is lower than the first threshold limit (V0) it indicates a warning on the speedometer.
[00048] When the voltage after self-check is higher than the threshold limit, the speedometer continuously monitors the different in voltage which is measured after self-check (V1) and current battery voltage (V2) until the engine has starter.
[00049] If the voltage difference is higher than predefined limit (Vr) the speedometer displays a warning message to the user.
[00050] Figure 4 illustrates a flow diagram for a method of controlling a display device as per a second embodiment of the present invention.
[00051] The advantages of the present invention include:
[00052] Advantages include with respect to Performance, Durability, and Emission
[00053] Can be implemented in any vehicle with battery and cluster/ speedometer having battery discharge warning.
[00054] Can be used for operating the loads at lower level if battery voltage is lower than the threshold limit.
[00055] When the battery is discharged higher than 11V start ability of the vehicle will be affected since the starter motor would be able to overcome compression. On the other aspect if the battery voltage is maintained at good level, load on the engine will be lower compared to a discharged battery and since the number of discharge / charging cycles are reduced the life of the batteries will be improved.
[00056] A method of providing battery discharge warning comprising a controller which senses the magnitude of time duration after Ignition ON and Engine OFF.
[00057] If the time duration exceeds the threshold limit a warning message will be displayed on the speedometer. The threshold limit depends on the loads that are active after Ignition ON.
[00058] A method of providing battery discharge warning comprising a controller which senses the battery voltage.
[00059] When the voltage is lower than the first threshold limit it indicates a warning / alert.
[00060] When the voltage is higher than the threshold limit, the controller continuously monitors the difference in voltage which is measured after self-check and current battery voltage until the engine has started.
[00061] If the voltage difference is higher than the predefined limit the controller displays a warning message to the user.
[00062] The warning message also accompanies a list of loads that are using the battery list will be sorted on priority basis by taking inputs from various sensors.
[00063] As per another embodiment, When the vehicle battery voltage after ignition ON is lower than the threshold limits a warning message will be displayed on the speedometer.
[00064] The above-mentioned flowchart explains the method of providing battery discharge warning on the speedometer. The speedometer continuously monitors the battery voltage after ignition ON until the engine is started. If the measured voltage is lower than the threshold limits a warning message will be displayed on the speedometer.
[00065] Various modifications of the disclosed embodiments, as well as alternate embodiments of the subject matter, will become apparent to persons skilled in the art upon reference to the description of the subject matter. It is therefore contemplated that such modifications can be made without departing from the spirit or scope of the present subject matter as defined.
, Claims:I/We claim:
1. A method for a control unit (200) of a display device (203), said method comprising the steps of:
Detecting, by a control unit (200), a battery (201) state of charge;
Monitoring, by the control unit (200), if the battery (201) state of charge is below a first threshold;
indicating a warning message regarding battery (201) state of charge if the battery state is below said first threshold (307, 407); and
displaying by the display device (203), a priority list of one or more loads that must be disabled by the user.
2. The method for the control unit (200) of the display device (203) as claimed in claim 1, wherein one or more sensors being configured to detect magnitude of time duration post ON state of an ignition switch and Engine OFF state (302, 304, 402).
3. The method for the control unit (200) of the display device (203) as claimed in claim 1, wherein said state of charge of battery (201) being detected for a predefined duration (404).
4. The method for the control unit (200) of the display device (203) as claimed in claim 2, wherein a warning message being displayed on said display device (203) if said magnitude of time exceeds beyond a first threshold (305, 306).
5. The method for the control unit (200) of the display device (203) as claimed in claim 4, wherein said control unit (200) being configured to continuously monitor a difference in state of charge beyond said first threshold (404).
6. The method for the control unit (200) of the display device (203) as claimed in claim 4, wherein said control unit (200) being configured to continuously monitor a difference in state of charge until the engine being enabled (405).
7. The method for the control unit (200) of the display device (203) as claimed in claim 5, wherein a warning message being continuously displayed on said display device (203) if said difference in stage of charge is higher than a predefined limit (Vr) (407, 408).
8. The method for the control unit (200) of the display device (203) as claimed in claim 5, wherein if said difference in stage of charge is beyond a predefined limit (Vr), a priority list based on inputs from one or more sensors being displayed for use by a user.
9. The method for the control unit (200) of the display device (203) as claimed in claim 8, wherein said priority being determined based on state of charge of said battery (201), power consumption of said one or more loads, inputs from one or more sensors that determine importance of ON state of said one or more loads (307, 407).
10. The method for the control unit (200) of the display device (203) as claimed in claim 9, wherein said one or more sensors include ambient light sensor, CAN data – status of load actuation, sensor connected to one or more brake lamps and one or more hazard lamps.

Dated this 23rd day of February 2023