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Automobile lamp glaring prevention system and method based on laser digital phase determination

A technology of laser and car lights, applied in radio wave measurement systems, measuring devices, optical signals, etc., can solve problems such as low coupling degree of cars, susceptibility to external interference, complex systems, etc., to reduce light pollution, improve sensitivity, sensitivity high effect

Inactive Publication Date: 2010-10-27
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology can adjust the lighting mode of the car lights according to the traffic conditions and make them switch automatically, it is costly, complex and susceptible to external interference, and the coupling degree with the car is not high.

Method used

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  • Automobile lamp glaring prevention system and method based on laser digital phase determination
  • Automobile lamp glaring prevention system and method based on laser digital phase determination
  • Automobile lamp glaring prevention system and method based on laser digital phase determination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the anti-dazzle system for car lights based on laser digital phase measurement includes a laser emitting device, a laser receiving device and a signal processing device. The main control oscillator is connected with the laser emitting device, the laser receiving device is connected with the phase detector, and the microprocessor is connected with the control circuit of the vehicle lamp.

[0044] The laser emitting device includes a laser and an acousto-optic modulator connected in sequence, and the acousto-optic modulator is connected with the master oscillator.

[0045] The laser is a semiconductor laser.

[0046] The laser receiving device includes a narrow-band filter and a photomultiplier tube connected in sequence, and the photomultiplier tube is connected with a phase detector.

[0047] The microprocessor is a digital signal processor.

[0048] Such as figure 2 As shown, the anti-dazzle method based on laser digital phase measuremen...

Embodiment 2

[0066] Other features of this embodiment are the same as embodiment 1 except the following features:

[0067] Such as image 3 As shown, the laser emitting device includes a laser, an acousto-optic modulator and a transmitting telescope connected in sequence, and the acousto-optic modulator is connected to the master oscillator.

[0068] The laser receiving device includes a receiving telescope, a narrow-band filter and a photomultiplier tube connected in sequence, and the photomultiplier tube is connected with a phase detector.

[0069] The laser is a semiconductor laser.

[0070] The wavelength of the laser is 1080nm, and the sensitive wavelength of the photomultiplier tube matches the wavelength of the laser, which is 1080nm.

[0071] In the anti-dazzling method of car lights based on laser digital phase measurement of this embodiment, after the laser is modulated by the acousto-optic modulator in the step (2), the collimation and direction of the laser beam are first adj...

Embodiment 3

[0074] This embodiment has the same characteristics as Embodiment 1 except for the following features: the wavelength of the laser is 900 nm, and the sensitive wavelength of the photomultiplier tube matches the wavelength of the laser, which is 900 nm.

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PUM

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Abstract

The invention provides an automobile lamp glaring prevention system based on laser digital phase determination, which comprises a laser emitting device, a laser receiving device and a signal processing device, wherein the signal processing device comprises a pilot oscillator, a phase shifter, a phase discriminator and a microprocessor which are connected sequentially, the pilot oscillator is connected with the laser emitting device, the laser receiving device is connected with the phase discriminator, an the microprocessor is connected with control circuits of automobile lamps. The invention also discloses an automobile lamp glaring prevention method based on the system; and in the method, a distance digital signal of the distance between a automobile and an automobile ahead is measured through laser phase determination, and a corresponding signal is sent through the microprocessor according to a comparison result of the distance digital signal and a preset distance threshold digital signal in the microprocessor so as to control and regulate the lighting modes of the automobile lamps, thereby achieving the effect of automobile lamp glaring prevention. The invention has the characteristics of excellent effect on preventing glaring, good coupling degree with the automobile, lower cost and the like, and can reduce light pollution fundamentally.

Description

technical field [0001] The invention belongs to the technical field of anti-dazzling headlights, in particular to an anti-dazzle system and method based on laser digital phase measurement. Background technique [0002] With the popularization of automobiles, the dazzling phenomenon caused by its high beams is becoming more and more serious, threatening personal and traffic safety. In order to improve the glare caused by high beams, two technologies are generally used, one is to improve the design of car lights by improving the light source, and the other is to use optical film technology to improve the vehicle reflector and shading plate Coating, or use some materials with special optical properties to make glasses for drivers to reduce the luminous flux entering the eyes. Although these two methods can effectively reduce the occurrence of glare, they both have relatively large limitations. Improve the structure of car lights to reduce glare. Many factors such as the struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q1/08G01S17/08
Inventor 李嘉宝许龙李彦燕邵子奇吴俊杰陈振强
Owner JINAN UNIVERSITY
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