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Fault monitoring system of LED tail light circuit and monitoring and processing method

A fault monitoring and LED light source technology, applied in the use of semiconductor lamps, electric light sources, electrical components, etc., can solve the problems of taillights not working properly, and achieve the effects of avoiding traffic accidents, low interference and damage, and improving safety

Pending Publication Date: 2018-10-09
CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if there is an abnormal state, the entire tail light will not work normally

Method used

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  • Fault monitoring system of LED tail light circuit and monitoring and processing method
  • Fault monitoring system of LED tail light circuit and monitoring and processing method
  • Fault monitoring system of LED tail light circuit and monitoring and processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The fault conditions of the bus, the execution unit 2 and the control unit 1 in the LED taillight circuit mainly monitored by the fault monitoring system will be described in detail below.

[0048]Bus fault monitoring: the UART bus in the LED tail light circuit is implemented by the MCU 12 for fault monitoring. Generally, by using the data verification CRC on the software, by adding the CRC code in the data sending and receiving, it can be detected whether the data sent and received each time is correct, thus ensuring the accuracy and reliability of the data transmission.

[0049] Execution unit 2 fault monitoring: execution unit 2, such as LED driver chip 21, LED light source matrix 22 and LEDs in LED light source matrix 22; LED driver chip 21 and LEDs in LED light source matrix 22, send fixed query commands through UART bus , the registers of the LED driver chip 21 can be queried to know the states of the LED driver chip 21 and the LEDs in the LED light source matrix ...

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PUM

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Abstract

The invention discloses the fault monitoring system of an LED tail light circuit and a monitoring and processing method. The system comprises a control unit and an execution unit. The control unit andthe execution unit are connected through a UART bus. The control unit comprises a CAN / LIN transceiver, a MCU and an LDO. The CAN / LIN transceiver is connected to the MCU. The LDO provides power for the CAN / LIN transceiver and the MCU. The execution unit comprises an LED driving chip, an LED light source matrix and a constant current loop control module. The LED driving chip is connected to the LEDlight source matrix and the constant current loop control module. In the invention, through an upper computer, each work state of LED tail light can be know in real time, a unnecessary traffic accident caused by the failure of the LED tail light is avoided and the safety of night driving is effectively increased.

Description

technical field [0001] The invention relates to a fault monitoring system for an LED tail light circuit, in particular to a fault monitoring system and a monitoring and processing method for a matrix or pixel LED tail light circuit. Background technique [0002] With the rapid development of electronic technology, the popularization of the application of LED light sources in car lights and the increasingly miniaturized design of LED light sources, matrix or pixel-type taillights with multi-particle LEDs have also emerged as the times require. By controlling the on and off of LEDs in different areas, various effects of tail lights can be realized, such as: breathing lights, marquees, emoticons, etc. However, with the continuous increase in the number of taillight LEDs, how to effectively monitor and deal with faults has become a technical problem to be solved. [0003] Tail lights, as the main lighting fixtures for night driving, require high reliability. However, if there ...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/50Y02B20/30
Inventor 徐健张银芳沈倩邓亮
Owner CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST
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