铂电阻非平衡电桥温度计的设计

摘要

利用Matlab和Origin软件，从理论上分析了电压型非平衡电桥铂金属温度计设计中，各种参数对温度线性度的影响。设计了0~100℃范围的温度计，获得电桥的输出电压和测量温度具有很好的线性关系。%The influence of a variety of parameters on the linear of the thermometer in the design of the unbal-anced bridge are theoretically analyzed using Matlab software and Origin software. The thermometer was de-signed to obtain 0~100℃range.It was found that it has a good linear relationship between the output voltage of unbalanced bridge and temperature.