Automatic dimming method based on astronomical algorithm

An automatic dimming, astronomical algorithm technology, applied in complex mathematical operations, electrical components, energy-saving control technology and other directions, can solve the problem of brightness glare, weak adaptability, and it is difficult to consider the installation angle, location, equipment quality, and environmental pollution of photosensitive sensors. impact, etc.

Pending Publication Date: 2021-09-10
JIANGSU GENTURE ELECTRONICS INFORMATION SERVICE CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] At present, the brightness of LED information publishing terminals cannot adapt well to changes in ambient light. There are generally problems such as insufficient brightness of LED information publishing terminals, visual recognition of displayed information, and glare caused by excessive brightness, causing short-term blindness.
Manually adjust the brightness, the workload is heavy, and it is difficult to adjust in time
At present, th

Method used

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  • Automatic dimming method based on astronomical algorithm
  • Automatic dimming method based on astronomical algorithm
  • Automatic dimming method based on astronomical algorithm

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Embodiment Construction

[0045] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0046] In this example, at 8:00 on January 20, 2021, the Nanjing-Shanghai-Nanjing road section, the equipment is installed vertically due to the south, and the light sensor detects ambient light of 5000CD / m 2 , taking the vehicle target opening angle of 30 degrees as an example,

[0047] Take the real time t, since the real time is 8:00 on January 20, 2021, here n=20.

[0048] so n 0 =78.801+[0.2422☓(2021-1969)]-INT[0.25☓(2021-1969)]

[0049] =78.3954

[0050] t =20-1- n 0 =-59.3954

[00...

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Abstract

The invention relates to an automatic dimming method based on an astronomical algorithm, and belongs to the technical field of automatic dimming. According to the method, an accurate sunlight incident angle is calculated based on an astronomical algorithm according to different dates, time, longitudes and latitudes, equipment azimuth angles and the like. The display brightness of the LED information display terminal is adaptively adjusted according to different natural environment illumination influences and human vision characteristics by combining measurement parameters of the photosensitive sensor and position data of the LED display terminal. Clear, comfortable and easily-recognized information is provided for observers, and light pollution is reduced. In combination with the installation angle and measurement parameters of the photosensitive sensor, the display brightness is adjusted according to the relation between the photoelectronic imaging and the human eye observation threshold, and the optimal visual brightness adjustment is realized. The problems that the brightness of the LED information issuing terminal is insufficient, the displayed information is not recognized clearly, and the brightness is too high to cause glare, and transient blindness is caused are solved.

Description

technical field [0001] The invention relates to an automatic dimming method based on an astronomical algorithm, and belongs to the technical field of automatic dimming. Background technique [0002] At present, the brightness of LED information publishing terminals cannot well adapt to changes in ambient light. There are generally problems such as insufficient brightness of LED information publishing terminals, visual recognition of displayed information, and glare caused by excessive brightness, causing short-term blindness. Adjusting the brightness manually requires a lot of work, and it is difficult to adjust in time. At present, the automatic brightness adjustment algorithm simply collects environmental brightness information through the photosensitive sensor and makes linear adjustments. It is difficult to consider the influence of the installation angle, position, equipment quality, and environmental pollution of the photosensitive sensor, and the actual brightness adj...

Claims

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Application Information

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IPC IPC(8): H05B45/10G06F17/11
CPCH05B45/10G06F17/11Y02B20/40
Inventor 李涛高晶董文杰
Owner JIANGSU GENTURE ELECTRONICS INFORMATION SERVICE CO LTD
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