计算机与数字工程2012，Vol.40Issue(5)：59-62,71,5.
铂电阻测温系统数值计算软件设计研究与实现
Research and Implementation of Numerical Calculating Software of Platinum Resistance Temperature Measurement
彭伟1
作者信息
- 1. 武汉城市职业学院电子信息工程学院 武汉430064
- 折叠
摘要
Abstract
The characteristic curve of platinum resistance temperature sensor PT100 was studied, and the Platinum electric resistance calculation program was designed which based on A/D Converter* for the quadratic equations of positive temperature range, we extract the root by the optimization of the analytic method,for the equation of higher degree of negative temperature range, we analyzed and designed the numerical calculation program which respectively based on bisection, Newton method and secant method, operating on the temperature measurement system circuit which set up by PIC18F452 microcontroller, I2C interface with 18 bits of precision A/D converter and a PT100 sensor, it achieves high precision temperature measurement and real time display in a full measurement range between - 200°C ~-850°C, the Newton method achieved the highest speed of solution in negative temperature range.关键词
铂电阻/PT100/二分法/牛顿法/切线法/弦截法/数值计算/解析法/A/D转换/温度传感器Key words
platinum resistance/ PT100/ bisection/ Newton method/ tangent method/ secant method/ numerical calculation/ analytical method/ A/D conversion/ temperature sensor分类
信息技术与安全科学引用本文复制引用
彭伟..铂电阻测温系统数值计算软件设计研究与实现[J].计算机与数字工程,2012,40(5):59-62,71,5.
