Control system and method for adjusting luminance of working indicator lamp

Abstract

The invention provides a control system for adjusting luminance of a working indicator lamp. The control system comprises a control module, a sensor module, a working indictor lamp and a pulse width modulation module which are in mutual electrical connection; the sensor module is used for collecting environment light radiation or light ray intensity of an external environment; the control module stores a corresponding relation between the environment light radiation or light ray intensity and duty ratio needing to be output by the pulse width modulation module, so as to output a corresponding duty ratio according to the environment light radiation or light ray intensity collected by the sensor module; and the pulse width modulation module outputs a voltage signal corresponding to the collected environment light radiation or light ray intensity according to the duty ratio signal output by the control module, so as to change the voltage at the two ends of the working indicator lamp in order to adjust the luminance of the working indicator lamp. Further, the invention provides a control method for regulating the luminance of the working indicator lamp by adopting the control system.

Description

technical field [0001] The invention relates to the technical field of automobiles, and in particular to a control system and a method for adjusting the brightness of a working indicator light. Background technique [0002] BCM (Body Controller) is a control module with powerful design functions, which can realize discrete control functions and control many electrical appliances. Its main functions include: electric door and window control, central door lock control, remote control anti-theft, lighting system control, electric rearview mirror heating control, instrument backlight adjustment, power distribution, etc. [0003] The working indicator light of the whole vehicle is an important part of the function composition of the whole vehicle system, such as the indicator light of not fastening the seat belt, the locking status indicator light, etc. , when indicating the working state, the control module applies a voltage to the two ends of the diode (indicator light), and t...

AI Technical Summary

Problems solved by technology

[0003] The working indicator light of the whole vehicle is an important part of the function composition of the whole vehicle system, such as the indicator light of not fastening the seat belt, the locking status indicator light, etc. , when indicating the working state, the control module applies a voltage to both ends of the diode (indicator light), and the indicator light is on, but at this time the indicator light can only indicate with a specific brightness and cannot be adjusted

However, the working conditions of automobiles are more complicated. It may be in the dark night or in the sunny day. At present, the working indicator lights of automobiles all use a specific brightness to indicate the working status, so there will be insufficient brightness during the day. Unable to see clearly, the brightness is too bright and dazzling at night, which affects driving safety

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