Automotive electronically controlled liquid crystal dimming partition light baffle and control method thereof

Abstract

An electro-controlled liquid crystal dimming subarea light barrier for a vehicle comprises a light barrier, wherein the outer layer of the light barrier adopts an acrylic plastic transparent plate; the light barrier comprises an upper light blocking area, a lower light blocking area and a transparent area; the upper light blocking area comprises m electro-controlled liquid crystal dimming plates; the lower light blocking area comprises n electro-controlled liquid crystal dimming plates; the light barrier further comprises a control mainboard, a photoelectric sensor group and a control circuit; and the control method for the light barrier comprises micro relay controlling and manual debugging. Through design of normal-open and normal-closed switch positions of a relay, corresponding relations among the photoelectric sensors, the relay and the electro-controlled liquid crystal dimming plates are established according to manual debugging so as to ensure that highlight in each direction is effectively shielded without affecting the vision of a driver.

Description

Background technique [0001] When driving at night, many drivers cannot use the high beams correctly. If they encounter strong light from the oncoming vehicle when they meet, the driver of the vehicle will be temporarily blinded, which is very prone to danger. Experiments have shown that a 30cm*20cm transparent board is placed at 20~40cm in front of the driver's eyes. Transparent objects, and the distance between the centers of the two objects is about 65mm (approximately equal to the distance between the centers of the eyes of adults), it can cover the incident light that illuminates the eyes. With the relative movement of the vehicle, as long as the two patches follow the movement, and the two patches Keeping the center distance at about 65mm will enable the driver of the car to pass safely without the lights of the opposite car always shining on his eyes. According to the experimental results, human eye structure and optical knowledge, it can be proved that the track of the ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the existing light shields are equipped with opaque or translucent light shields in front of the windshield. The light panel cannot guarantee to block all the strong light

2. The vehicle is always in relative motion, and the incident point of strong light will also move accordingly. The existing light baffle cannot be dynamically adjusted following the incident point of strong light

3. The light barrier will affect the driver's field of vision, which is not conducive to observing the surrounding environment

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