A Method of Software Control for the Acceleration Sensor Output Signal Gain
For the problem of circuit calibration process cumbersome,inefficient calibration,the system can not change the output signal gain of the Piezoelectric acceleration sensor signal conditioning during running,After the charge amplifier,controlled by micro controller,variable gain operational amplifier is used to achieve real-time control of the output signal gain.By the analog to digital conversion module(A/D) integrated on the microprocessor,the acceleration sensor output signal is detected.At the same time,the microprocessor also controls the variable gain operational amplifier in expected range by its current mode D/A switch module (IDAC).This circuit in the sensor circuit and calibration of the ballistic projectile during signal acquisition both overload the application test.Experiments show that this method can be easily and accurately adjusted in real time piezoelectric acceleration sensor output signal gain,in line with requirements.
signal conditioning digital potentiometer variable gain
ZHANG Jianxin ZHANG He
Ministerial Key Laboratory of ZNDY Nanjing University of Science and Technology Nanjing,China
国际会议
太原
英文
223-227
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）