A method for adjusting the brightness automatic adjustment device of HUD

Abstract

The present invention discloses an HUD brightness automatic regulation device and method in the automatic control technology field. The device comprises: a horizontal light sensor and a vertical light sensor, wherein the installation directions of the horizontal light sensor and the vertical light sensor are mutually perpendicular and the measuring ranges of the horizontal light sensor and the vertical light sensor are the same, and the vertical light sensor is provided with a light filter membrane; a microprocessor, wherein the microprocessor comprises an A / D processing module, a data processing module and a PWM module, the horizontal light sensor and the vertical light sensor are configured to convert the detected light brightness signals to digital signals through the A / D processing module and then transmit the digital signals to the data processing module, and the data processing module performs processing and calculation to obtain PWM digital quantity applied to the PWM module; the LED module, wherein the LED module comprises a LED driver and a LED lighting chain, and the PWM module controls the brightness of the LED lighting chain through the LED driver; an external rotary knob configured to transmit the brightness regulation signals to the A / D module for manual regulation of the brightness. The light regulation range is wide, and the light regulation is more smooth.

Description

technical field [0001] The invention relates to a brightness adjustment system, in particular to a device and method for adjusting the brightness of a head-up display. Background technique [0002] Head-up displays (HUDs) were first used in military aircraft to reduce the frequency with which pilots need to look down at instruments, thereby avoiding distraction and loss of state awareness. Later, HUD technology was applied to automobiles, hoping to reduce traffic accidents caused by drivers looking down at instruments or central control displays and enhance driving safety. [0003] In the process of driving, the ambient light changes all the time. In the case of weak ambient light (such as at night), the human eyes will feel comfortable when the HUD display brightness is low, but the high brightness will stimulate the human eyes and affect Driving safety; also in the case of strong ambient light (direct sunlight at noon), the high-brightness display of the HUD can make the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the existing technology cannot uniformly adjust the brightness according to the external environment, and provide a HUD brightness automatic adjustment device and method. The invention has a wide dimming range and smoother dimming, so as to adapt to human The intensity of the eye's perception of light improves driving safety

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