高精度温度测量系统的测温补偿算法研究  

Research on temperature compensation algorithm of high-precision temperature measurement system

作　　者：程建华[1] 罗立成[1] 王鑫哲[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《传感器与微系统》2010年第11期36-39,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(60974104)

摘　　要：对单纯采用硬件实现精确测温难度较大的问题,设计了合适的测温补偿算法用于提高系统测温精度。采用最小二乘拟合的标校方案,实现了测温系统的温度补偿,克服了由于器件准确度不够引入的测温误差。设计巴特沃思数字低通滤波器对温度信号中的高频噪声进行有效滤波。该方法在不增加硬件电路成本和设计难度的情况下,大大提高了温度测量系统的测温精度和稳定性。实测数据验证了该方法的有效性与可行性。Considering the problems that it is more difficult to achieve accurate temperature measurement only using hardware circuits, it is necessary to design a suitable temperature compensation algorithm to improve the accuracy of temperature measurement system. The least-squares fitting program is used to achieved temperature compensation of the temperature measurement system. It overcomes the error of the temperature measurement clue to the lack accuracy of the circuit components. The Butterworth digital low-pass filter is designed to filter the high- frequency noise effectively in the measured temperature signal. This method does not increase the cost of the hardware circuits and make the design difficult. It also greatly improves the accuracy and stability of the temperature measurement. The measured datas verify the effectiveness and feasibility of the method.

关 键 词：测温 最小二乘 滤波 温度补偿 

分 类 号：TB942[一般工业技术—计量学]