多路温度同步测量系统开发与实现
|
摘要
针对多路温度同步测量的需求,研制了一种基于可编程逻辑阵列(field program gate array,FPGA)和低功耗内核(STM32)的多路温度同步测量系统。该系统以FPGA为主控制器,直接驱动多片模数转换器件,对多路电信号进行同步测量,使用STM32实现温度信号的转换和计算。系统预期测温范围为-200~850℃,测温精度达到0.01℃。实验结果表明,该系统在使用PT100温度传感器测温且测温范围为-200~400℃时,系统测量误差小于0.003℃,全量程(-200~850℃)范围内系统测量误差小于0.005℃。所设计的多路温度同步测量系统尽管随温度增大测量误差存在增大趋势,但在全量程范围内实现了0.01℃测温精度的目标,并具有多路温度同步测量、通道数易于扩展等优点,具有一定的实用价值。
Aiming at the demand of multi-channel temperature measurement,a multi-channel temperature measurement system was developed based on field programmable gate array(FPGA)and low power core(STM32).The FPGA chip is the main controller of the system,which directly drives the multiple analog to digital converter chips to measure the multi-channel electric signals synchronously.The STM32 was used to perform the conversion and calculation of the temperature signal.The accuracy of the temperature measurements is expected to be within0.01℃ in the temperature range from-200 to 850℃.The system was validated in the temperature range from-200 to 850℃.The experimental results showed that the accuracy is less than 0.003℃ in the temperature range from-200 to 400℃,and less than 0.005℃ at temperatures up to 850℃.The system has high measuring accuracy,can be used in multi-channel synchronous measurement,and is easy to expand the number of channels.
Aiming at the demand of multi-channel temperature measurement,a multi-channel temperature measurement system was developed based on field programmable gate array(FPGA)and low power core(STM32).The FPGA chip is the main controller of the system,which directly drives the multiple analog to digital converter chips to measure the multi-channel electric signals synchronously.The STM32 was used to perform the conversion and calculation of the temperature signal.The accuracy of the temperature measurements is expected to be within0.01℃ in the temperature range from-200 to 850℃.The system was validated in the temperature range from-200 to 850℃.The experimental results showed that the accuracy is less than 0.003℃ in the temperature range from-200 to 400℃,and less than 0.005℃ at temperatures up to 850℃.The system has high measuring accuracy,can be used in multi-channel synchronous measurement,and is easy to expand the number of channels.
引文
[1] 行鸿彦,武向娟,吕文华,等.自动气象站数据采集器温度通道的环境温度补偿[J].仪器仪表学报,2012,33(8):1868-1875.XING Hongyan,WU Xiangjuan,LV Wenhua,et al.Environmental temperature compensation for the temperature channel of data-acquisition unit in automatic weather station[J].Chinese Journal of Scientific Instrument,2012,33(8):1868-1875.
[2] 王欢,黄晨.高精度无线环境温湿度测量系统设计研究[J].电子测量与仪器学报,2013,27(3):211-216.WANG Huan,HUANG Chen.Design and study of temperature and humidity measurement system in high accuracy wireless environment[J].Journal of Electronic Measurement and Instrument,2013,27(3):211-216.
[3] 孔令荣,王昊,庄涛.多点无线温度监测系统研究与实现[J].电子测量技术,2014,37(8):97-103.KONG Lingrong,WANG Hao,ZHUANG Tao.Research and implement of multi-point wireless temperature monitoring system[J].Electronic Measurement Technology,2014,37(8):97-103.
[4] 卞楠,马聪.基于CPLD的光伏数据采集系统的设计[J].电子技术应用,2016,42(2):68-70.BIAN Nan,MA Cong.Design of photovoltaic data acquisition system based on CPLD[J].Application of Electronic Technique,2016,42(2):68-70.
[5] 全国温度计量技术委员会.工业铂、铜热电阻:JJG229—2010[S].北京:中国计量出版社,2010:24.
[6] 胡鹏程,时玮泽,梅健挺.高精度铂电阻测温系统[J].光学精密工程,2014,22(4):988-995.HU Pengcheng,SHI Weize,MEI Jianting.High precision Pt-resistance temperature measurement system[J].Optics and Precision Engineering,2014,22(4):988-995.
[7] 郑泽祥,姜周曙,黄国辉,等.铂电阻高精度温度测量系统设计[J].机电工程,2013,30(12):1494-1497.ZHENG Zexiang,JIANG Zhoushu,HUANG Guohui,et al.Design of platinum resistance high-precision temperature measurement system[J].Journal of Mechanical and Electrical Engineering,2013,30(12):1494-1497.
[8] 柳炳琦,庹先国,贺春燕,等.基于FPGA的通用SPI总线IP核设计与实现[J].核电子学与探测技术,2014,34(3):331-335.LIU Bingqi,TUO Xianguo,HE Chunyan,et al.The design and realization of general SPI bus IP core bases on FPGA[J].Nuclear Electronics and Detection Technology,2014,34(3):331-335.
[9] 张松,李筠.FPGA的模块化设计方法[J].电子测量与仪器学报,2014,28(5):560-565.ZHANG Song,LI Jun.Modular design of FPGA design methodology[J].Journal of Electronic Measurement and Instrument,2014,25(8):560-565.
[10]邵建新.标准偏差与测量结果标准不确定度的A类评定[J].统计与决策,2014(12):8-12.
[2] 王欢,黄晨.高精度无线环境温湿度测量系统设计研究[J].电子测量与仪器学报,2013,27(3):211-216.WANG Huan,HUANG Chen.Design and study of temperature and humidity measurement system in high accuracy wireless environment[J].Journal of Electronic Measurement and Instrument,2013,27(3):211-216.
[3] 孔令荣,王昊,庄涛.多点无线温度监测系统研究与实现[J].电子测量技术,2014,37(8):97-103.KONG Lingrong,WANG Hao,ZHUANG Tao.Research and implement of multi-point wireless temperature monitoring system[J].Electronic Measurement Technology,2014,37(8):97-103.
[4] 卞楠,马聪.基于CPLD的光伏数据采集系统的设计[J].电子技术应用,2016,42(2):68-70.BIAN Nan,MA Cong.Design of photovoltaic data acquisition system based on CPLD[J].Application of Electronic Technique,2016,42(2):68-70.
[5] 全国温度计量技术委员会.工业铂、铜热电阻:JJG229—2010[S].北京:中国计量出版社,2010:24.
[6] 胡鹏程,时玮泽,梅健挺.高精度铂电阻测温系统[J].光学精密工程,2014,22(4):988-995.HU Pengcheng,SHI Weize,MEI Jianting.High precision Pt-resistance temperature measurement system[J].Optics and Precision Engineering,2014,22(4):988-995.
[7] 郑泽祥,姜周曙,黄国辉,等.铂电阻高精度温度测量系统设计[J].机电工程,2013,30(12):1494-1497.ZHENG Zexiang,JIANG Zhoushu,HUANG Guohui,et al.Design of platinum resistance high-precision temperature measurement system[J].Journal of Mechanical and Electrical Engineering,2013,30(12):1494-1497.
[8] 柳炳琦,庹先国,贺春燕,等.基于FPGA的通用SPI总线IP核设计与实现[J].核电子学与探测技术,2014,34(3):331-335.LIU Bingqi,TUO Xianguo,HE Chunyan,et al.The design and realization of general SPI bus IP core bases on FPGA[J].Nuclear Electronics and Detection Technology,2014,34(3):331-335.
[9] 张松,李筠.FPGA的模块化设计方法[J].电子测量与仪器学报,2014,28(5):560-565.ZHANG Song,LI Jun.Modular design of FPGA design methodology[J].Journal of Electronic Measurement and Instrument,2014,25(8):560-565.
[10]邵建新.标准偏差与测量结果标准不确定度的A类评定[J].统计与决策,2014(12):8-12.