Control method for glare elimination and visual optimization of automobile electronic mirror

A control method and technology of electronic mirrors, which are applied to vehicle components, transportation and packaging, and optical observation devices, etc., can solve problems such as blindness of the driver, influence on the driving safety of the driver, and inability to see objects, so as to optimize the brightness of the screen and avoid disadvantages effect of influence

Active Publication Date: 2020-05-22
宁波市金榜汽车电子有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, during night travel, since the screen of the electronic rearview mirror still uses glass as the substrate, there is still glare from the rear headlights, which makes it difficult for the driver to see the displayed picture clearly. At the same time, when the ambi

Method used

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Embodiment Construction

[0050] A control method for glare elimination and visual optimization of an automotive electronic mirror, including a lens calibration part and an algorithm control part;

[0051] The lens calibration part includes the calibration of reflectivity and control voltage, the calibration of transmittance and control voltage, the calibration of ambient light brightness and appropriate reflectivity, and the calibration of ambient light brightness and appropriate backlight brightness.

[0052] The calibration of reflectivity and control voltage includes the following steps:

[0053] Step 1. Measure the reflectivity of the LCD screen lens in the unpowered state;

[0054]Step 2. Apply a mV voltage to the LCD screen lens, measure and record the reflectivity of the LCD screen lens, where a is a constant;

[0055] Step 3. Gradually increase the voltage with a voltage increment of b mV until the maximum operating voltage of the LCD screen lens, and measure and record the reflectivity of th...

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Abstract

The invention discloses a control method for glare elimination and visual optimization of an automobile electronic mirror, which relates to the technical field of automobile electronic mirrors. The control method is characterized by comprising a lens calibration part and an algorithm control part. The lens calibration part comprises the step of acquiring a calibration curve S1, a calibration curveS2, a calibration curve S3 and a calibration curve S4. The algorithm control part comprises a plurality of control and calculation steps. According to the invention, the problem of dazzling of the electronic mirror when the glare is strong is effectively solved by reducing the reflectivity; the screen brightness is insufficient by coordinately controlling the simultaneous reduction of the reflectivity and the transmissivity; meanwhile, when the ambient light is dark, the purpose of being suitable for human eyes is achieved by adjusting the backlight brightness; and when the perspective rate of the LCD screen lens is insufficient, the reduction of the compensation light transmittance is achieved by improving the backlight brightness, the screen backlight brightness is effectively adjustedto a range suitable for a driver to watch, and adverse effects on the driving safety of the driver are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of an automotive electronic mirror, and more specifically relates to a control method for glare elimination and visual optimization of an automotive electronic mirror. Background technique [0002] The electronic anti-dazzling rearview mirror of the car adopts electrochromic lenses, and the headlight information of the rear vehicle is collected through light perception. Through a certain algorithm, the reflectivity of the lenses is controlled by adding a certain voltage to the electrochromic lenses, and the rear The light intensity from the mirror reflectance to the driver's eyes is controlled within a certain comfortable range to ensure the driver's visual safety. [0003] The Chinese patent whose publication number is CN105242418A discloses an automatic anti-glare automotive electronic rearview mirror, which includes a housing, a front glass substrate arranged on the housing, a rear glass substrate, a fron...

Claims

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Application Information

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IPC IPC(8): G09G3/34B60R1/08
CPCG09G3/3406G09G3/3413B60R1/088
Inventor 黎波吴黎辉周迥
Owner 宁波市金榜汽车电子有限公司
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