Crops Growth Moisture Content Detector Based on Physiological Capacitance of Stem
YE Hong-ling · Yibiao jishu yu chuanganqi · 2010
This paper expounded the principle of the physiological capacitance sensor of crops stem and discussesed the design of crops growth moisture measuring instrument with playing speech based on the 16-bit signal chip SPCE061A.Making use of the stem capacitance sensor to detect the signal of crops growth moisture content,the signal of which were processed through the signal conditioning circuit will swich,display and voicebrodcast.Using wireless data transmission module PTR8000,it can constitute a multiple monitoring system which was easy to remote centralized control.It has been proved that the system can work steadily,transfer reliably,with visual and intuitionistic data.