Brake lamp sensor

A sensor and brake light technology, applied in optical signals, signaling devices, transportation and packaging, etc., can solve problems such as affecting driving safety, power failure, loss of two-way signals BLS and BTS, etc., to avoid complete loss. Effect

Inactive Publication Date: 2020-01-07

DONGFENG LIUZHOU MOTOR

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AI-Extracted Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a brake light sensor, which can solve the problem in...

Abstract

The invention discloses a brake lamp sensor, and relates to the technical field of automobile manufacturing. The brake lamp sensor comprises two power source processing circuits, one is a first powersource processing circuit and the other is a second power source processing circuit, the first power source processing circuit provides a working power source for a first Hall element, the second power source processing circuit provides a working power source for a second Hall element, the output end of the first Hall element outputs a signal through a first switch tube, and the output end of thesecond Hall element outputs a signal through a second switch tube; and the first switch tube acquires a power source from the first power source processing circuit, and the second switch tube acquiresa power source from the second power source processing circuit. According to the brake lamp sensor, the problem that in the prior art, one path of power is powered down, then the two paths of signalsof BLS and BTS are lost, and the driving safety is influenced can be solved.

Application Domain

Optical signalling

Technology Topic

Driving safetyElectrical and Electronics engineering +1

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Examples

Experimental program(1)

Example Embodiment

[0013] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0014] figure 1 The brake light sensor shown includes a power processing circuit, and there are two power processing circuits, one is the first power processing circuit 1, and the other is the second power processing circuit 2, the first power processing circuit 1 is the first Hall The element 3 provides working power, the second power processing circuit 2 provides working power for the second Hall element 4, the output terminal of the first Hall element 3 outputs a signal through the first switch tube T1, and the output of the second Hall element 4 The terminal outputs a signal through the second switch tube T2; the first switch tube T1 gets power from the first power processing circuit 1, and the second switch tube T2 gets power from the second power processing circuit 2. The output end of the second switch tube outputs a signal through the output resistor R, and the output resistor R is formed by parallel connection of three resistors with the same resistance value. In this embodiment, the first switching transistor T1 is a field effect transistor; the second switching transistor T2 is a triode.

[0015] The brake light sensor of the present invention adopts two-way power supply for power supply, the two-way Hall elements are powered independently, and the two-way brake signal output of the brake light sensor can be independently controlled;

[0016] The two Hall elements of this sensor are powered by two power sources respectively. When one power supply fails, the other power supply can still supply power to the Hall element, maintaining the output of the braking signal, avoiding the complete loss of the braking signal, and the ECU can be downgraded. use.

[0017] In the present invention, only one channel is powered on, and the other channel is powered off, and only one channel of signal output is reserved as required.

[0018] In other embodiments, the first switching transistor T1 is a triode, and the second switching transistor T2 is a field effect transistor.

PUM

Description & Claims & Application Information

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