Collision detection circuit and system

Abstract

The embodiment of the invention provides a collision detection circuit and system, and relates to the field of automobile collision detection. A signal input end is electrically connected with a control electrode of a silicon controlled rectifier, a cathode of the silicon controlled rectifier is connected to the ground, an anode of the silicon controlled rectifier is connected with the high leveland electrically connected with a level conversion circuit, and the level conversion circuit is further electrically connected with a controller. The signal input end is used for receiving a collisionsignal and transmitting the collision signal to a latch circuit; the latch circuit is used for achieving breakover when receiving the collision signal and maintaining the breakover state; the level conversion circuit is used for outputting the high level to the controller when the latch circuit is in the breakover state; and the controller is used for generating a locking signal when detecting the high level. The silicon controlled rectifier has the advantages of small size, high efficiency, long life and the like, therefore, an analog-digital conversion circuit and a latch in the prior art are replaced with the silicon controlled rectifier, the collision detection circuit is simplified, and the life of the collision detection circuit is also prolonged while the cost for manufacturing a circuit board with the collision detection circuit is reduced.

Description

technical field [0001] The invention relates to the field of automobile collision detection, in particular to a collision detection circuit and system. Background technique [0002] With the continuous development of science and technology and the economy, the development of the automobile field is also getting faster and faster, and the number of cars is getting higher and higher. Now people mostly travel by car or by themselves, but there are safety hazards in road traffic, and traffic accidents often occur. Handling is critical. [0003] In the prior art, the collision detection circuit uses an analog-to-digital conversion device and a latch to realize latching processing and level conversion of the collision signal, but this will cause the collision detection circuit to be more complicated and costly to generate; in addition, in the future When a collision occurs, it is impossible to know whether the signal input terminal or the signal source is working normally, which...

AI Technical Summary

Problems solved by technology

Now people mostly travel by car or by themselves, but there are safety hazards in road traffic, and traffic accidents often occur. processing is critical

[0003] In the prior art, the collision detection circuit uses an analog-to-digital conversion device and a latch to realize latching processing and level conversion of the collision signal, but this will cause the collision detection circuit to be more complicated and costly to generate; in addition, in the future When a collision occurs, it is impossible to know whether the signal input terminal or the signal source is working normally, which is not conducive to judging whether a collision has occurred

Images