新型高精度温度测量技术的实现

The Implementation of a Novel High Precision 4-wire RTD Temperature Measurement Technology

针对一种新型的反馈虚地四线制测量方法，详述了电路的实现，尤其是误差分析。该电路结构合理、测温精度高，能在大的使用温度范围内自动修正温漂影响、稳定性好，曾在国家“八五”科技攻关项目中获得成功应用。

The circuit implementations, specially the error analysisare presented for a novel 4 - wire RTD temperature measurementtechnology that use a new method named 'feedback virtual ground' .This circuit has such feature as concise and rational structure, highaccuracy, wide working temperature with drift calibration and goodstability. The circuit had been used in the key item of the nationalscience and technology.