Application of Intelligent Signal-Conditioning IC in Micro-Pressure Measure

摘要：

In certain type UAV (Unmanned Aerial Vehicle) altitude sensor performance detection equipment, a kind of signal-conditioning circuit which is used for piezoresistive transducer (PRT) is designed to solve the measure problem of pressure. In this circuit, the sensors zero point output, thermal zero shift, full-scale output, thermal sensitivity shift, and full-scale output nonlinearity etc. are compensated and calibrated. The error compensation form of former tradition is abandoned in this circuit, a new signal-conditioning chip MAX1457 is adopted, then a method of software compensation is put forwarded, the error calibration table is established. So the sensor output error is controlled in 0.11％～0.158％ by calibrating compensation.

关键词： Micro-pressure intelligent sensor

作者: LI Yong ke Du Ya ping

作者单位: Department of Optical and Electronic Engineering,Ordnance Engineering College HeBei Medical University Fourth Hospital Endocrinology Department,Shijiazhuang 050003,China

会议类型: 国际会议

会议名称: 第八届国际电子测量与仪器学术会议(Proceedings of 2007 8th International Conference on Electronic Measurement & Instruments)

会议地点: 西安

会议语种:英文

在线出版日期: 2007-08-16（万方平台首次上网日期，不代表论文的发表时间）