基于ST72F561的全数字式汽车组合仪表的设计

Design of full digital combined meters in automobile based on ST72F561

本文介绍了新一代电子式汽车组合仪表的设计方案,该设计选择ST公司的8位单片机ST72F561作为控制器,以LCD液晶显示里程数,以步进电机驱动指针显示转速、车速、水温和燃油液位,对重要数据有掉电保护功能,具有超速报警、燃油及水温报警、各种指示灯显示以及CAN总线通讯功能。通过实验证明,该设计符合国家标准,且具有较高的显示精度。

This paper introduces the design of a new generation combined meters, which is based on ST72F561, an 8-bit microprocessor from ST Company. In the meter, the mileage is displayed on LCD display, the rotation speed, vehicle speed, water temperature and fuel level are displayed on needle meters driven by stepper motors. The meters also have the following functions such as protecting important data when power down ; alarms for over speed, low fuel and high water temperature; various signal indicators and CAN-bus communication capability. Experimental results prove that the proposed design conforms to the national standard and has high display precision.