The invention provides an in-vehicle instrument backlight brightness adjusting system and method, an in-vehicle instrument and a vehicle, and relates to the technical field of display. The system comprises a photosensitive sensor, a sampling circuit, a controller and a backlight driving circuit which are connected in sequence; the photosensitive sensor is used for acquiring real-time external illuminance transmitted by the light guide piece; the sampling circuit is used for converting real-time external illuminance into a real-time sampling voltage value; and the controller is used for acquiring a real-time ADC value corresponding to the real-time sampling voltage value, and outputting a corresponding target brightness percentage signal to the backlight driving circuit according to the real-time ADC value and a preset optimization algorithm, so that the backlight brightness of the instrument in the vehicle is adjusted through the backlight driving circuit. According to the invention, the low-cost photosensitive sensor is used, and the optimization of the optimization algorithm is adopted, so that the stepless change of the brightness of the instrument in all-day multi-scene is realized, no obvious sudden change of the brightness is generated, and the brightness change is smoother, thereby bringing better driving feeling to a driver.
本发明提供了一种车内仪表背光亮度调节系统及方法、车内仪表及车辆,涉及显示技术领域,该系统包括依次连接的光敏传感器、采样电路、控制器和背光驱动电路;光敏传感器用于获取经由导光件传递的实时外界光照度;采样电路用于将实时外界光照度转换为实时采样电压值;控制器用于获取与实时采样电压值对应的实时ADC值,并根据实时ADC值和预设的优化算法,输出对应的目标亮度百分比信号至背光驱动电路,从而通过背光驱动电路调节车内仪表的背光亮度。本发明用了较低成本的光敏传感器,加上优化算法的优化,实现了仪表全天多场景下的亮度无极变化,不会有明显的亮度突变,亮度变化会更加平滑,从而给驾驶员带来更好的驾车感受。
In-vehicle instrument backlight brightness adjusting system and method, in-vehicle instrument and vehicle
车内仪表背光亮度调节系统及方法、车内仪表及车辆
2021-11-19
Patent
Elektronische Ressource
Chinesisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION |
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