Detection device and detection method for position of automotive rotary headlamp

Abstract

The invention discloses a detection device for a position of an automotive rotary headlamp, which comprises linear Hall sensors which outputs different voltage signals according to different magnetic field intensities, a permanent magnet and a calculator for receiving the voltage signals of the linear Hall sensors and performing calculation. The automotive rotary headlamp comprises a lamp holder which is hinged to an automobile body through a rotating shaft; and a motor driving the lamp holder to rotate, a coupling sleeve and a connecting rod base are arranged at two ends of the lamp holder respectively. The detection device is characterized in that: the linear Hall sensors are arranged on two motors respectively; and the permanent magnet is arranged at a corresponding position of the coupling sleeve. The detection method for the detection device for the position of the automotive rotary headlamp comprises the following steps: outputting different voltage signals according to the change of the magnetic field intensity by the linear Hall sensors when the displacement of the two coupling sleeves is changed; and calculating and measuring an angle of the headlamp rotating up and down or left and right by the calculator according to a corresponding relationship between the voltage signals and a rotating angle of the lamp holder. The detection device for the position of the automotive rotary headlamp has the advantages of simple structure, high precision, and the capacity of accurately measuring the position of the automotive rotary headlamp in real time.

Description

technical field [0001] The invention relates to an object position detection device and a detection method, in particular to a detection device and a detection method for the position of a rotating headlight of an automobile. Background technique [0002] At present, there is such a problem in the automobile lighting system, that is, when the car turns, the light cannot shine on the steering side of the car body, forming a lighting dead angle, which brings great safety hazards to driving, and many car lights have appeared for this reason. The on-board steering device is used to solve this problem, but this requires high precision of the turning angle of the lights, and real-time monitoring and control to prevent deviation. [0003] Chinese Patent Application No. 200610053040.8 discloses a high-precision inclination measuring device. The main structure includes a sealed frame. A straight rod is suspended on the frame. A charge-coupled array device is arranged below. [0004...

AI Technical Summary

Problems solved by technology

Solve the problem of complex structure and large deviation existing in the detection device and detection method of the position of the automobile rotating headlight

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