应用于仪器仪表的背光可控液晶管理系统

摘要

根据电子式电能表液晶显示的应用环境,研制了高清仪表液晶管理系统.该系统的液晶背光可通过PWM波灵活控制,显示对比度可随温度变化自动调节,从而提升了电子式电能表的人机交互性能和显控品质,在实际产品应用中已取得满意成效.由于设计电路简单且实用性强,系统可用于仪器仪表行业的其他同类产品中.%In accordance with the applicable environment of liquid crystal display for electronic watt-hour meters, the high clarity LCD management system for instrumentation has been developed. The backlight of instrument can be flexibly controlled by PWM waves, and the contrast can be automatically adjusted based on temperature variation f this upgrades the performance of man-machine interaction and display quality for electronic watt-hour meters. The practical products have been applied with satisfactory effects. Since the design of circuitry is simple and highly practical, the system can be used in and other similar products of instrumentation industries.