MWS型微电脑原棉水分测定仪的设计

Designing of the MWS electronic equipment to test the moisture content in raw cotton using microcomputer

介绍了MWS型原棉水分测定仪的工作原理及硬件电路和控制程序的设计方法。该仪器采用CHMOS-51系列单片机控制,依据电阻法测水原理,用半导体温度传感器实现了半自动测试、温度自动补偿、液晶显示及语音提示等功能,具有测试快捷、数据稳定准确、使用方便等特点。

The thesis introduces the principle of the MWS and the designing methods of hardware circuits and control programs.According to the principle of the electric resistance method to test the water,a series of the microcomputer CHMOS-51 are adopted to control in the equipment.Using the semi-conductor temperature transducer,it realized the functions of semi-automatic test,auto-temperature compensation,liquid crystal display and speech hint.It has typical features,such as rapid test,steady data with high accuracy and easy to use etc.