Electrical signal acquisition device for semiconductor gas sensors
Aiming at the characteristics of semiconductor gas sensor,such as sensitive to environment and large resistance span,an electrical signal acquisition device based on semiconductor gas sensor is designed,which has the characteristics of high sensitivity,small size and wide applicability.The device uses the multi-gear voltage division method to realize the resistance measurement in the range of Ω～GΩ,and eliminates the interference of physical,temperature and humidity by filtering algorithm and temperature and humidity compensation algorithm.At the same time,the device is equipped with an local alarm,upper computer alarms and an air chamber.The device realizes accurate measurement of semiconductor gas sensors,and at the same time designs integrated circuits to package the sensor into a practical application system.The device adopts a domestic EDA and core chip design,which effectively fills the gap in this field.
semiconductor gas sensorsembeddedlarge resistance measurement
NETL
NSTL
万方数据
维普
