Design of circuit for examination of moisture content with capacitance sensor based on AC bridge
Song Wen · Informationization · 2009
Various ways have been developed in order to solve the problem of online examination of moisture content.Among all the methods which have been used recently,the advantages of measuring capacitance are most obvious,and it also has a relatively high level of reliability and precision.Based on the principle of AC bridge,an examination circuit using capacitance sensor is designed here.Combining with the requests of examination of moisture content,a hardware circuit is developed and debugged.The experiment proves the feasibility of the circuit.