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Instrument backlight brightness control method and device

A technology of backlight brightness and control method, which is applied in the field of automotive instrumentation and can solve problems such as being too simple

Active Publication Date: 2017-10-27
FORYOU GENERAL ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The three conventional LCD instrument backlight brightness control methods described above are independent of each other, and they are too simple when dealing with complex and changeable driving environments

Method used

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  • Instrument backlight brightness control method and device
  • Instrument backlight brightness control method and device
  • Instrument backlight brightness control method and device

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, specifically illustrate the embodiment of the present invention, and accompanying drawing is only for reference and explanation use, does not constitute the restriction to the protection scope of the present invention patent.

[0050] Embodiments of the present invention provide a method for controlling the brightness of an instrument backlight on the one hand, such as figure 1 shown, including:

[0051] Step 1. Calibrate the first basic backlight brightness level Lb1 and the second basic backlight brightness level Lb2 of the instrument backlight.

[0052] In this embodiment, the first basic backlight brightness level is a brightness level that can make the instrument display clear and make human eyes feel comfortable under the first standard ambient light brightness value and when the vehicle is stationary. The brightness value level of the backlight is the brightness value level that can make the instrument display clea...

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Abstract

The invention provides an instrument backlight brightness control method and device. The method comprises the steps that S1, a first base backlight brightness value level Lb1 and a second base backlight brightness value level Lb2 of backlight of an instrument are calibrated; S2, whether a current headlamp signal is valid or not is detected, if yes, the step S3 is started, and if not, the step S4 is started; S3, the current car speed value V is obtained, and the backlight brightness value level of the instrument is adjusted according to the preset first dimming relation expression; S4, the current environment light brightness value Be is obtained, whether the current environment light brightness value is lower than the first preset threshold value Bs1 or not is judged, if yes, the step S3 is started again, and if not, the next step is started; and S5, the current car speed V is obtained, and the backlight brightness value level of the instrument is adjusted according to the preset second dimming relation expression. Automatic control over the instrument backlight brightness is achieved.

Description

technical field [0001] The invention relates to the technical field of automobile instruments, in particular to a method and device for controlling the brightness of an instrument backlight. Background technique [0002] In recent years, the automobile industry has developed rapidly. With the development of technology, the emergence of new processes and the continuous improvement of various production processes, the cost of automobiles has dropped rapidly, and automobiles have almost entered the stage of popularization in households. While the car market is expanding, the technologies that are closely connected with the car are also developing rapidly. Among them, the development of car instrument clusters is also changing with each passing day, whether it is the appearance design or the internal hardware and software design. Combination instruments are gradually replaced by full LCD instruments from traditional mechanical instruments. Now almost all luxury cars or high-end...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q3/18G09G3/34
CPCB60Q3/18G09G3/3406
Inventor 钟海锋
Owner FORYOU GENERAL ELECTRONICS