为了提高精密播种机的工作质量,研制了水稻直播机的排种工况自动检测及液晶显示报警系统.该系统以STC89C51为中央处理器,并通过红外光电传感器和转速传感器对播种机的工况进行实时信号采集,处理.通过液晶显示器实时显示工况,当出现非正常播种时并能自动报警.设计有如下特点:1)监测精度高,工作可靠；2)可同时检测多个信号,易于扩展；3)结构简单,操作方便,价格低廉；4)使用范围广.%In order to improve the working quality of precision sowing machines, reserched a rice seed live unit automatically detects the condition and LCD alarm system. The system uses the STC89C51 central as processor, and the real time signal was acquired and processed through infrared photoelectric sensor and speed sensor on the planter's condition, and displayed through the LCD conditions in real time, when there is non-normal planting the automatically alarm will ring. This design has the following characteristics: 1) monitoring of high precision, reliable; 2) multiple signals are detected at the same time, easy to expand; 3) simple structure, easy operation low price; 4) the use of a wide range.
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