Velometer of automatic automotive bumper

Abstract

The invention provides a velometer of an automatic automotive bumper. The velometer comprises a plane coil spring, 4 to 12 sensing blocks, a proximity switch rack and a proximity switch component. The plane coil spring wraps on an output shaft or inner joint of an automotive main driver. The sensing blocks distributed evenly are fixed around the coil spring. The proximity switch rack is fixed close to an automotive transmission shaft and is correspondingly fixed on fixed part, and the proximity switch component is mounted on the proximity switch rack. The proximity switch component is connected to a proximity switch, a cable and a plug sequentially. Each sensing block can pass through the proximity switch sequentially, and the plug is connected to the automatic automotive bumper. The velometer has the advantages that the inner diameter of the plane coil spring can be adjusted freely, and the velometer is adaptable to all automobiles. The velometer is mounted independently to automotive circuits, rarely triggers a circuit failure alarm of an automotive electronic control unit, and is capable of measuring real-time speed of the automobile accurately and collecting parameters of the real-time speed of the automobile for the automatic automotive bumper.

Description

technical field [0001] The invention relates to an accessory of an automatic anti-collision device of an automobile, in particular to a speed measuring device of an automatic anti-collision device of an automobile. Background technique [0002] The automatic anti-collision device of the car needs to measure the real-time speed of the car as the basic parameter for the anti-collision device to judge the alarm, automatic deceleration and automatic braking threshold. The existing speed measurement scheme is as follows: 1. Obtain the real-time vehicle speed from the diagnostic interface OBD2 of the vehicle; 2. Obtain the real-time vehicle speed from the vehicle speed sensor or ABS system; 3. Install the gear ring and the proximity switch on the transmission shaft of the vehicle to obtain the real-time vehicle speed . The problems in the above schemes are as follows: the real-time performance of the vehicle speed obtained by scheme 1 is not strong, and precise control cannot be ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned inconvenience problem of the speedometer of the automatic anti-collision device of the automobile, the present invention provides a speed detector of the automatic anti-collision device of the automobile applicable to various automobiles, so that the real-time speed of the automobile can be measured more accurately, and it can be used for automatic anti-collision of the automobile. The collider collects real-time vehicle speed parameters

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