Design method for automatically adjusting backlight brightness of combination instrument according to light control

Abstract

The present application relates to a kind of combination instrument backlight brightness with light control automatic adjustment design method, solve the current driver manually adjusts the brightness of instrument, and the frequency of instrument backlight brightness adjustment is too high to bring the problem of bad experience to driver.Combination instrument backlight brightness on vehicle is combined with small light switch and anti-aircraft light switch, when small light is opened, instrument automatically matches middle-grade brightness, when anti-aircraft light is opened, instrument automatically matches low-grade brightness, when small light and anti-aircraft light are closed, instrument restores default high-grade brightness.The present application combines combination instrument backlight brightness on vehicle with small light switch and anti-aircraft light switch, realizes the automatic adjustment of instrument backlight brightness, ensures that after switching anti-aircraft mode on battlefield, vehicle will not be found because of too bright instrument brightness, secondly, instrument brightness and ambient brightness will not be too large, and driver will not feel dazzling because of instrument brightness.

Description

Technical Field

[0001] This invention relates to a design method for automatically adjusting the backlight brightness of a combination instrument panel according to lighting control, belonging to the automotive field. Background Technology

[0002] When driving, as nighttime light conditions become increasingly dim, the instrument cluster backlight brightness remains constant unless manually adjusted. During the day, the instrument cluster backlight brightness is typically at its highest setting, but at night this brightness becomes significantly greater than the ambient light, causing glare for the driver and forcing them to manually adjust the backlight brightness.

[0003] Another scenario is on the battlefield, during nighttime operations, where vehicles typically need to activate anti-aircraft mode. After turning on the anti-aircraft light switch, all other lights on the vehicle are turned off. However, the brightness of the instrument cluster needs to be manually adjusted to the lowest setting by the driver; otherwise, the excessive backlighting will expose the driver.

[0004] In both of these situations, the driver needs to manually adjust the instrument panel brightness. However, adjusting the instrument panel backlight brightness too frequently can lead to a poor driving experience. Summary of the Invention

[0005] This invention provides a design method for automatically adjusting the backlight brightness of a combination instrument panel according to the lighting control, which solves the problem that the driver's experience is poor due to the excessive frequency of manual adjustment of the instrument panel backlight brightness.

[0006] This invention is achieved through the following technical solutions: A design method for automatically adjusting the backlight brightness of a combination instrument panel according to lighting control combines the backlight brightness of the vehicle's combination instrument panel with the parking light switch and the anti-aircraft light switch. When the parking lights are turned on, the instrument panel automatically matches the medium brightness level; when the anti-aircraft light is turned on, the instrument panel automatically matches the low brightness level; and when the parking lights and anti-aircraft light are turned off, the instrument panel returns to the default high brightness level.

[0007] The specific method is as follows: After the vehicle starts and the ambient light dims, the driver turns on the anti-aircraft light switch to activate the anti-aircraft lights. The hardwire signal for the light is input to the vehicle control unit. Upon receiving the anti-aircraft light hardwire signal, the vehicle control unit sends a light message 0x18FE4121 to the instrument cluster. After receiving the light message, the instrument cluster parses the message. If either Bits1...2 or Bits3...4 of Byte 7 of 0x18FE4121 is 1, the instrument cluster backlight brightness is automatically adjusted to the minimum brightness of 10%. When the driver turns on the parking light switch, the vehicle control unit receives the parking light hardwire signal and sends the light message 0x18FE4121 to the instrument cluster. If the instrument cluster parses Byte 4 of 0x18FE4121 and Bits1...2 is 1, the instrument brightness is automatically adjusted to 50%. If neither of these two messages is parsed, the instrument cluster returns to its original brightness.

[0008] This invention combines the backlight brightness of the vehicle's instrument cluster with the small light switch and the anti-aircraft light switch, realizing automatic adjustment of the instrument backlight brightness. This ensures that when the vehicle switches to anti-aircraft mode on the battlefield, it will not be detected due to excessively bright instrument brightness. Furthermore, the instrument brightness will not be too much different from the ambient brightness, so the driver will not feel glared by the instrument brightness. Detailed Implementation

[0009] This invention is a design method for automatically adjusting the backlight brightness of a combination instrument panel according to lighting control. It combines the backlight brightness of the combination instrument panel on the vehicle with the small light switch and the anti-aircraft light switch, realizing the automatic adjustment of the instrument panel backlight brightness. This ensures that when the vehicle switches to anti-aircraft mode on the battlefield, the vehicle will not be detected due to excessive instrument brightness. In addition, the instrument brightness will not be too much different from the ambient brightness, so the driver will not feel glare due to the instrument brightness.

[0010] When the parking lights are turned on, the instrument panel automatically adjusts to a medium brightness level. When the air raid siren is turned on, the instrument panel automatically adjusts to a low brightness level. When the parking lights and air raid siren are turned off, the instrument panel reverts to the default (high) brightness level.

[0011] After the vehicle starts, as the ambient light dims, the driver activates the anti-aircraft lights by turning on the anti-aircraft light switch. The hardwire signal for the lights is sent to the vehicle control unit. Upon receiving this signal, the control unit sends a light message (0x18FE4121) to the instrument cluster. The instrument cluster receives and parses the message. If either Bits1...2 or Bits3...4 of Byte 7 of 0x18FE4121 is 1, the instrument cluster backlight brightness automatically adjusts to the minimum of 10%. When the driver turns on the parking lights, the control unit receives the parking light hardwire signal and sends the 0x18FE4121 message to the instrument cluster. If the instrument cluster parses Byte 4 of 0x18FE4121 and finds Bits1...2 to be 1, the brightness automatically adjusts to 50%. If neither of these two messages is found, the instrument cluster returns to its original brightness.

[0012] After implementation, this invention can improve the vehicle's stealth on the battlefield and enhance the driver's comfort.

Claims

1. A design method for automatically adjusting the backlight brightness of a combination instrument according to lighting control, characterized in that: The backlight brightness of the vehicle's instrument cluster is combined with the parking light switch and the anti-aircraft light switch. When the parking lights are turned on, the instrument cluster automatically matches the medium brightness level. When the anti-aircraft lights are turned on, the instrument cluster automatically matches the low brightness level. When the parking lights and anti-aircraft lights are turned off, the instrument cluster returns to the default high brightness level.

2. The design method for automatically adjusting the backlight brightness of a combined instrument according to light control as described in claim 1, characterized in that: After the vehicle starts and the ambient light dims, the driver turns on the anti-aircraft light switch to activate the anti-aircraft lights. The hardwire signal for the light is input to the vehicle control unit. Upon receiving the anti-aircraft light hardwire signal, the vehicle control unit sends a light message 0x18FE4121 to the instrument cluster. After receiving the light message, the instrument cluster parses the message. If either Bits1...2 or Bits3...4 of Byte 7 of 0x18FE4121 is 1, the instrument cluster backlight brightness is automatically adjusted to the minimum brightness of 10%. When the driver turns on the parking light switch, the vehicle control unit receives the parking light hardwire signal and sends the light message 0x18FE4121 to the instrument cluster. If the instrument cluster parses Byte 4 of 0x18FE4121 and Bits1...2 is 1, the instrument brightness is automatically adjusted to 50%. If neither of these two messages is parsed, the instrument cluster returns to its original brightness.