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Vehicle body controller and method for achieving limping homing thereof

A body controller and limp home technology, which is applied in vehicle cleaning, vehicle maintenance, vehicle parts, etc., can solve problems such as potential safety hazards and vehicle driving, and achieve the effect of improving safety

Active Publication Date: 2013-04-24
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The failure mode will lead to potential safety hazards in vehicle driving, especially in rainy days or at night

Method used

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  • Vehicle body controller and method for achieving limping homing thereof
  • Vehicle body controller and method for achieving limping homing thereof
  • Vehicle body controller and method for achieving limping homing thereof

Examples

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Embodiment Construction

[0028] see figure 2 , the body controller of this application includes:

[0029] ——MCU, collects the signals of ignition switch, brake pedal and front wiper switch, and sends driving signals to the drive module.

[0030] ——SBC (System Basis Chip), connected to the MCU to diagnose whether the MCU is normal, send a reset signal to the MCU or start the limp home logic circuit when the MCU fails. The SBC also turns off the limp home logic circuit when the MCU returns to normal.

[0031] ——The limp home logic circuit also collects the signals of the ignition switch, brake pedal, and front wiper switch, and sends a drive signal to the drive module after starting.

[0032] ——The drive module, which receives the drive signal from the MCU and the limp home logic circuit, performs OR operation on the two drive signals of the same control object (low beam, brake light, middle high-position brake light, front wiper), and then turns on Or turn off the corresponding low beams, brake lig...

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Abstract

The invention discloses a vehicle body controller. The vehicle body controller comprises a micro controller unit (MCU), a single board computer (SBC), a limping homing logic circuit and a driving module, wherein the MCU collects signals of an ignition switch, a brake pedal and a front wiper switch and sends driving signals to the driving module; the SBC is connected with the MCU so as to diagnose whether the MCU is normal and sends reset signals to the MCU or starts the limping homing logic circuit when the MCU fails; the limping homing logic circuit also collects the signals of the ignition switch, the brake pedal and the front wiper switch and sends the driving signals after driven; and the driving module receives the driving signals sent by the MCU and the limping homing logic circuit, and opens or closes a corresponding dipped headlight, a brake light, a middle high brake lamp and a front wiper after logic or operation. The invention further discloses a method for achieving limping homing of the vehicle body controller. The dipped headlight, the brake light and the front wiper can still continuous being used after the MCU fails, and driving safety is improved.

Description

technical field [0001] The present application relates to a body controller (BCM, Body Control Module) of a motor vehicle. Background technique [0002] The body controller is mainly responsible for the control of lights, doors, windows, locks and wipers. see figure 1 , which is an existing body controller that includes an MCU (microprocessor) and a drive module. The MCU collects the control signals sent by the user, such as the ignition switch, brake pedal, front wiper switch, etc., and sends the drive signal to the drive module after logical operation through the software. The drive module then outputs voltage and / or current to turn on or off the corresponding low beam, brake light, center high mounted stop light (CHMSL, CenterHigh Mounted Stop lamp) and front wiper. [0003] All the control functions of the above body controller depend on its core device MCU. If the MCU fails or the software program it runs is wrong, the body controller will lose control of the low bea...

Claims

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Application Information

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IPC IPC(8): B60Q1/04B60Q1/44B60S1/04B60R16/02
Inventor 夏大卫陆克马永军周洁高德海
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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