Control method and device for automobile braking lamplight

A technology for automobile braking and light control, applied in the field of commercial vehicles, can solve problems such as unfavorable safety, lag, complicated electrical circuits, etc., and achieve the effect of great flexibility

Active Publication Date: 2007-04-25
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in this way, the deceleration should be calibrated according to different vehicle speeds and road conditions. In addition, judging the deceleration will always cause some lag, which is not good for

Method used

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  • Control method and device for automobile braking lamplight
  • Control method and device for automobile braking lamplight

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specific Embodiment approach

[0018] In Fig. 1, the brake light control device of the present invention includes a vehicle electronic control unit, an engine electronic control unit, a brake light relay, a brake pedal switch, and a retarder switch are controlled with the vehicle electronic control unit through a digital IO interface. The engine electronic control unit is connected to the brake light control module of the vehicle electronic control unit through the CAN bus, the brake light control module is connected to the brake light control relay, and the engine electronic control unit includes an exhaust system. and the private message sending module D for the activation signal of the engine brake and the engine brake. The electronic control unit of the whole vehicle has a module A for logically ORing the exhaust brake and engine brake activation signals, and a message timeout flag module B. Module C for logical ORing of the signal a extracted from the air brake and engine brake activation signals, the b...

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Abstract

The invention relates to a method for controlling the brake tube of vehicle. Wherein, the electric controller via digit IO circuit collects the signal of brake pedal, the switch signal of speed buffer; the invention defines a CAN bus private report based on J1939 protocol, while said report comprises the active signal of exhaust brake and engine brake; the electric controller receives the report from the controller of engine via CAN bus; when electric controller finds out there is brake or one speed buffer activated, it will control the tube relay to turn on the brake tube. The invention can fully utilize the share information of CAN bus, without additive circuit. And it has wide application.

Description

technical field [0001] The invention relates to a method and device for controlling brake lights of an automobile, which belongs to the software control strategy of the brake lights of the electronic control unit of the whole vehicle, and is especially suitable for vehicles equipped with engine brakes (Jake Brake), exhaust brakes and chassis retarders. of commercial vehicles. Background technique [0002] At present, the brake light control on traditional vehicles is generally controlled by the brake pedal switch through the brake light relay. And some advanced vehicles that use the bus network, the body electronic control unit will collect the signal of the brake pedal switch, and then send the signal to the lamp driving electronic control unit through the bus, and the lamp driving electronic control unit will control it. [0003] Now, many commercial vehicles are equipped with various retarders, including engine brakes, exhaust brakes and chassis retarders (divided into e...

Claims

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Application Information

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IPC IPC(8): B60Q1/54
Inventor 李祖元康西清顾斌
Owner DONGFENG MOTOR CORP HUBEI
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