摘要
通过改变传统上下位机控制的方法,采用可编程逻辑器件,将主控制卡和人机界面2部分分开控制,采用SPI通讯方式进行数据传递,内外筒温度采集均采用高精度的温度传感器PT1000采集,设计了一种基于PT1000的自动量热仪。试验过程中,对于初期、主期以及末期的温度采集以及C值的算法均按照试验的要求设置,试验环境采用高精度恒温系统,尽量避免由环境温差引起的误差。经过瑞方法和国标法对热容量和发热量的测试,测试结果符合国家标准。本设计方法可行。具有良好的推广价值。
Through changing the traditional method of upper and lower control,using programmable logic devices to separately control man-machine interface and the main control card,using SPI communication for data transmission,and both inside and outside the cylinder temperature acquisition,and using high-precision temperature sensor PT1000,an automatic calorimeter PT1000 was designed. During the test,for the early period,primary period and late period of acquisition and the algorithm of C value were in accordance with the requirements of the final test setup,and the test environment used high-precision thermostat system to avoid errors caused by the environmental temperature. Through testing for Rui method and GB method for heat capacity and heat of the test,the test results meet the national standards. The design method is feasible and has good promotional value.
出处
《仪表技术与传感器》
CSCD
北大核心
2016年第3期35-37,共3页
Instrument Technique and Sensor
基金
湖南省教育厅科研项目(13C592)
关键词
PT1000
自动量热仪
发热量
热容量
PT1000
automatic calorimeter
calorific value of coal
heat capacity
