CN111409547A - Brake lamp control system and method - Google Patents
Brake lamp control system and method Download PDFInfo
- Publication number
- CN111409547A CN111409547A CN202010324635.2A CN202010324635A CN111409547A CN 111409547 A CN111409547 A CN 111409547A CN 202010324635 A CN202010324635 A CN 202010324635A CN 111409547 A CN111409547 A CN 111409547A
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- brake
- brake lamp
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- vehicle
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000011084 recovery Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
- B60Q1/441—Electric switches operable by the driver's pedals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
According to the brake lamp control system and the brake lamp control method, the BCM sends a control level signal to the brake lamp control circuit after judging according to preset control logic according to request signals sent by a double-loop pedal stroke sensor, an electronic parking brake system EPBi and a vehicle control unit VCU, and the brake lamp control circuit controls a relay to be disconnected or closed, so that diversification and accurate control of the brake lamp are realized.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a brake lamp control system and method.
Background
Automobile brake lamp (being brake lamp) generally installs at the car afterbody, and the theme colour is red lamp generally to the brake of discovery front truck is changeed to the rear vehicle, and the brake lamp plays the effect that prevents to take place the rear-end collision accident, and the automobile braking in-process, the brake lamp is lighted, plays the effect of warning rear vehicle.
In the whole vehicle braking system, the brake lamp switch is connected to the brake lamp through a hard wire to directly drive the brake lamp to light, namely, the brake lamp switch is only connected with the brake lamp, the brake lamp is controlled to light or extinguish through the brake lamp switch, and the pedal stroke is difficult to design.
Meanwhile, with the improvement of additional functions of the automobile and the realization of the braking energy recovery function of the new energy automobile, a braking pedal travel sensor needs to be additionally arranged, so that the mode of turning on the braking lamp does not depend on a braking lamp switch.
Disclosure of Invention
The invention discloses a brake lamp control system, which can realize various control modes of a brake lamp by connecting a double-loop pedal stroke sensor with a BCM (binary coded modulation) and a VCU (vertical control Unit), has a simple structure, replaces a traditional brake lamp switch with functions, and reduces the cost.
The invention also provides a brake lamp control method, which can realize various control modes of the brake lamp by connecting the double-loop pedal stroke sensor with the BCM and the VCU, has simple structure, replaces the traditional brake lamp switch with functions and reduces the cost.
The invention discloses a brake lamp control system which comprises a double-loop pedal stroke sensor, a vehicle Body Controller (BCM), a Vehicle Control Unit (VCU), an electronic parking brake system (EPBi), a brake lamp control circuit and a brake lamp, wherein the vehicle control unit is connected with the Vehicle Control Unit (VCU);
one path of signal of the double-loop pedal stroke sensor is connected to a BCM signal input end of the vehicle body controller, a BCM signal output end of the vehicle body controller is connected with an input end of a brake lamp control circuit, and the brake lamp control circuit controls the brake lamp to be turned on or turned off;
the other path of signal of the double-loop pedal stroke sensor is connected to the signal input end of a VCU of the whole vehicle controller, the output end of the VCU of the whole vehicle controller is connected with an electronic parking braking system EPBi, and the electronic parking braking system EPBi executes the braking energy recovery function; meanwhile, the output end of the electronic parking brake system EPBi is connected with the corresponding signal input end of the vehicle body controller BCM, and the electronic parking brake system EPBi sends a request signal for turning on a brake lamp to the vehicle body controller BCM.
Furthermore, the other path of signal of the dual-loop pedal stroke sensor is connected to a signal input end of a VCU of the vehicle controller, and a signal output end of the VCU of the vehicle controller is connected with a brake priority system EEPO to output a brake signal to the brake priority system EEPO for judging the brake priority by the brake priority system EEPO.
Further, the BCM signal output end of the vehicle body controller is connected with a gear shifter controller; and the BCM receives a path of signal output by the double-loop pedal stroke sensor and controls the gear shifter controller to receive a gear shifting request.
Furthermore, the brake lamps comprise a high-position brake lamp, a left tail brake lamp and a right tail brake lamp; the brake lamp control circuit is respectively connected with the control ends of the brake lamps, including the high-position brake lamp, the left tail brake lamp and the right tail brake lamp.
Further, the vehicle control unit VCU is connected with an ignition switch; and after the VCU of the vehicle control unit receives the other path of signal output by the double-loop pedal stroke sensor, the VCU of the vehicle control unit can receive an ignition request signal of an ignition switch.
Further, the BCM and the VCU realize communication interaction through a CAN network; and the VCU sends a brake lamp control request signal to the BCM for backup of the brake signal.
The invention discloses a brake lamp control method, which uses the brake lamp control system and comprises the following steps,
step 1) the double-loop pedal stroke sensor inputs a brake signal to a BCM signal of the vehicle body controller, the BCM signal of the vehicle body controller inputs a brake lamp control signal to the brake lamp control circuit, and the brake lamp control circuit controls a brake lamp to be turned on or turned off;
step 2) the double-loop pedal stroke sensor inputs braking signals to the VCU of the vehicle control unit at the same time, and the following operations are executed:
21) the VCU inputs a braking energy recovery signal to the EPBi system, and the EPBi system executes the braking energy recovery function; meanwhile, the EPBi system inputs a request signal for turning on a brake lamp to the BCM;
22) the VCU of the vehicle controller controls a brake priority system EEPO to determine that the brake is priority;
23) the VCU can receive an ignition request signal of an ignition switch;
24) the vehicle control unit VCU outputs a shift request signal to the shifter controller.
Further, the brake lamp control circuit in step 1) outputs a brake lamp turn-on or turn-off instruction to the high-mount brake lamp, the left tail brake lamp and the right tail brake lamp, respectively.
The invention has the beneficial effects that: the double-loop pedal stroke sensor provides signals and combines with hydraulic signals of a hydraulic sensor built in the EPBi control unit, and the vehicle body controller BCM and the vehicle control unit VCU jointly realize more reasonable, accurate and diversified brake lamp control; the pedal travel sensor indispensable to the new energy automobile realizes that a thing is multi-purpose, cancels the stop lamp switch, has further reduced whole car development cost.
Drawings
Fig. 1 is a schematic view of a brake lamp control system according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The invention discloses a brake lamp control system which comprises a double-loop pedal stroke sensor 1, a vehicle body controller BCM3, a vehicle control unit VCU4, an electronic parking brake system EPBi2, a brake lamp control circuit 11 and a brake lamp.
The double-loop pedal stroke sensor 1 outputs an A/D signal according to the operation of stepping on a brake pedal by a user, one path of signal of the double-loop pedal stroke sensor 1 is connected to the signal input end of a vehicle body controller BCM3, the signal output end of the vehicle body controller BCM3 is connected with the input end of a brake lamp control circuit 11, and the control circuit controls the disconnection or suction of a relay, so that the on and off of a brake lamp are controlled.
The other path of signal of the double-loop pedal stroke sensor 1 is connected to the signal input end of a VCU4 of the vehicle controller, the output end of the VCU4 of the vehicle controller is connected with an electronic parking brake system EPBi2, and the electronic parking brake system EPBi2 executes the function of recovering brake energy; meanwhile, the output end of an electronic parking brake system EPBi2 is connected with the corresponding signal input end of the vehicle body controller BCM3, a hydraulic pressure sensor is arranged in the electronic parking brake system EPBi2, and a brake lamp lighting request signal is sent to the vehicle body controller BCM 3;
the other path of signals of the dual-loop pedal stroke sensor 1 is connected to a signal input end of a vehicle control unit VCU4, a signal output end of the vehicle control unit VCU4 is connected with a brake priority system EEPO6, and a brake signal is output to a brake priority system EEPO6 and used for judging brake priority by the brake priority system EEPO 6.
The BCM3 signal output end of the vehicle body controller is connected with the gear shifter controller 7; the BCM3 receives the output signal of the double-circuit pedal stroke sensor 1 and controls the gear shifter controller 7 to receive the gear shifting request.
The brake lamps comprise a high-position brake lamp 9, a left tail brake lamp 10 and a right tail brake lamp 8; the brake lamp control circuit is respectively connected with the control ends of the brake lamps, including the high-position brake lamp, the left tail brake lamp and the right tail brake lamp.
The vehicle control unit VCU4 is connected with the ignition switch 5; and after the VCU of the vehicle control unit receives the other path of signal output by the double-loop pedal stroke sensor, the VCU of the vehicle control unit can receive an ignition request signal of an ignition switch.
The BCM3 and the VCU4 of the vehicle controller realize communication interaction through a CAN network; the VCU4 sends a brake lamp control request signal to the BCM3 of the vehicle body controller, and the brake lamp control request signal is used for backing up a brake signal and preventing one-way signal interruption of the double-loop pedal stroke sensor 1.
A brake lamp control method adopts the system and comprises the following steps:
step 1) a double-loop pedal travel sensor 1 inputs a brake signal to a BCM3 signal of a vehicle body controller, the BCM3 of the vehicle body controller inputs a brake lamp control signal to a brake lamp control circuit 11, and the brake lamp control circuit 11 outputs a brake lamp turn-on or turn-off instruction to a high-order brake lamp 9, a left tail brake lamp 10 and a right tail brake lamp 8 respectively;
step 2), the double-loop pedal stroke sensor 1 simultaneously inputs a braking signal to the VCU4 of the vehicle controller, and the following operations are executed:
21) the VCU4 inputs a braking energy recovery signal to the EPBi2, and the EPBi2 executes the braking energy recovery function; meanwhile, the electronic parking brake system EPBi2 inputs a brake lamp on request signal to the body controller BCM 3;
22) the VCU4 of the vehicle controller controls a brake priority system EEPO6, and is used for judging that the brake is priority by the brake priority system EEPO 6;
23) the vehicle control unit VCU4 may receive an ignition request signal of an ignition switch;
24) the hybrid control unit VCU4 outputs a shift request signal to the shifter controller 7.
According to the brake lamp control system and the brake lamp control method, the BCM3 of the vehicle body sends a control level signal to the brake lamp control circuit 11 after judging according to the preset control logic according to the request signals sent by the double-loop pedal stroke sensor 1, the electronic parking brake system EPBi2 and the VCU4 of the vehicle controller, and the brake lamp control circuit controls the relay to be disconnected or attracted, so that the diversification and accurate control of the brake lamp is realized.
Claims (8)
1. A brake lamp control system characterized in that: the parking brake system comprises a double-loop pedal stroke sensor (1), a vehicle body controller BCM (3), a vehicle control unit VCU (4), an electronic parking brake system EPBi (2), a brake lamp control circuit (11) and a brake lamp;
one path of signal of the double-loop pedal stroke sensor (1) is connected to the signal input end of a BCM (3) of the vehicle body controller, the signal output end of the BCM (3) of the vehicle body controller is connected with the input end of a brake lamp control circuit, and the brake lamp control circuit controls the brake lamp to be turned on or turned off;
the other path of signal of the double-loop pedal stroke sensor (1) is connected to the signal input end of a VCU (4) of the vehicle controller, the output end of the VCU of the vehicle controller is connected with an electronic parking braking system EPBi (2), and the EPBi (2) of the electronic parking braking system executes the braking energy recovery function; meanwhile, the output end of the electronic parking brake system EPBi (2) is connected with the corresponding signal input end of the vehicle body controller BCM (3), and the electronic parking brake system EPBi (2) sends a request signal for lighting a brake lamp to the vehicle body controller BCM (3).
2. A brake light control system according to claim 1, wherein: the other path of signals of the double-loop pedal stroke sensor (1) is connected to a signal input end of a VCU (4) of the vehicle controller, and a signal output end of the VCU of the vehicle controller is also connected with a brake priority system EEPO (6) and outputs brake signals to the brake priority system EEPO (6) for judging the brake priority by the brake priority system EEPO (6).
3. A brake light control system according to claim 2, wherein: the signal output end of the BCM (3) of the vehicle body controller is connected with a gear shifter controller (7); and the BCM receives a path of signal output by the double-loop pedal stroke sensor and controls the gear shifter controller to receive a gear shifting request.
4. A brake light control system according to claim 3, wherein: the brake lamps comprise a high-position brake lamp (9), a left tail brake lamp (10) and a right tail brake lamp (8); the brake lamp control circuit is respectively connected with the control ends of the brake lamps, including the high-position brake lamp, the left tail brake lamp and the right tail brake lamp.
5. A brake light control system according to claim 4, wherein: the VCU is connected with an ignition switch (5); and after the VCU of the vehicle control unit receives the other path of signal output by the double-loop pedal stroke sensor, the VCU of the vehicle control unit can receive an ignition request signal of an ignition switch.
6. A brake light control system according to claim 5, wherein: the BCM and the VCU realize communication interaction through a CAN network; and the VCU sends a brake lamp control request signal to the BCM for backup of the brake signal.
7. A brake lamp control method is characterized in that: a brake light control system using claim 6, comprising the steps of,
step 1), the double-loop pedal stroke sensor (1) inputs a brake signal to the BCM (3) signal of the vehicle body controller, the BCM signal of the vehicle body controller inputs a brake lamp control signal to the brake lamp control circuit, and the brake lamp control circuit controls the brake lamp to be turned on or turned off;
step 2), the double-loop pedal stroke sensor (1) simultaneously inputs a braking signal to a VCU (4) of the vehicle controller, and the following operations are executed:
21) the VCU (4) of the vehicle control unit inputs a braking energy recovery signal to the EPBi of the electronic parking braking system, and the EPBi (2) of the electronic parking braking system executes a braking energy recovery function; meanwhile, the electronic parking brake system EPBi (2) inputs a request signal for turning on a brake lamp to the vehicle body controller BCM (3);
22) the VCU of the vehicle controller controls a brake priority system EEPO (6) and is used for judging that the brake priority system EEPO (6) gives priority to braking;
23) the VCU (4) of the vehicle control unit can receive an ignition request signal of an ignition switch;
24) the vehicle control unit VCU (4) outputs a shift request signal to the shifter controller.
8. The control method according to claim 7, characterized in that: in the step 1), the brake lamp control circuit (11) outputs a brake lamp turn-on or turn-off instruction to the high-position brake lamp (9), the left tail brake lamp (10) and the right tail brake lamp (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010324635.2A CN111409547A (en) | 2020-04-23 | 2020-04-23 | Brake lamp control system and method |
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| CN202010324635.2A CN111409547A (en) | 2020-04-23 | 2020-04-23 | Brake lamp control system and method |
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| CN202010324635.2A Pending CN111409547A (en) | 2020-04-23 | 2020-04-23 | Brake lamp control system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339656A (en) * | 2020-11-10 | 2021-02-09 | 南昌智能新能源汽车研究院 | Control method for multi-module triggering of vehicle high-mount stop lamp |
| CN112758066A (en) * | 2020-12-30 | 2021-05-07 | 东风汽车有限公司 | Automobile brake control system, control method and overall electronic control unit |
| CN113815527A (en) * | 2021-08-31 | 2021-12-21 | 重庆长安汽车股份有限公司 | Brake lamp control method and system of pure electric vehicle and pure electric vehicle |
| CN115107640A (en) * | 2022-06-01 | 2022-09-27 | 重庆长安汽车股份有限公司 | Brake lamp control method and system based on brake-by-wire system and vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339656A (en) * | 2020-11-10 | 2021-02-09 | 南昌智能新能源汽车研究院 | Control method for multi-module triggering of vehicle high-mount stop lamp |
| CN112339656B (en) * | 2020-11-10 | 2023-02-21 | 南昌智能新能源汽车研究院 | Control method for multi-module triggering of vehicle high-mount stop lamp |
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| CN113815527A (en) * | 2021-08-31 | 2021-12-21 | 重庆长安汽车股份有限公司 | Brake lamp control method and system of pure electric vehicle and pure electric vehicle |
| CN113815527B (en) * | 2021-08-31 | 2024-04-05 | 重庆长安汽车股份有限公司 | Brake lamp control method and system for pure electric vehicle and pure electric vehicle |
| CN115107640A (en) * | 2022-06-01 | 2022-09-27 | 重庆长安汽车股份有限公司 | Brake lamp control method and system based on brake-by-wire system and vehicle |
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Application publication date: 20200714 |
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