基于GP22设计低功耗控温热能仪表  

Design of GP22-based Thermal Meter with Low Power and Temperature Control

作　　者：高小明[1] 彭勇[1] 杨程[1] 

机构地区：[1]西南科技大学计算机科学与技术学院,四川绵阳621010

出　　处：《化工自动化及仪表》2014年第3期285-289,共5页Control and Instruments in Chemical Industry

基　　金：国家自然科学基金资助项目(61202044)

摘　　要：利用超声波在流体中的传输原理测量管道中介质的流速,并利用流体在回路中的温度变化准确计量热能的释放量,依此设计低功耗控温热能仪表。仪表采用具有超低功耗的时间计数器GP22和STM8L微控制器进行数据处理,并根据室内温度自动调节热能供给阀的开启量,以实现节能减排的目标。实验结果表明:该系统整体功耗低,性能稳定,测量准确。Making use of the ultrasound to measure flow speed in the pipeline and the fluid＇ s temperature variation in the loop to detect thermal energy released,a thermal meter with low power consumption and temperature control was designed,which has GP22 time counter and STM8 L micro-controller employed to process the data and to regulate threshold of the thermal energy supply valve as the room temperature requested so that saving the energy and reducing the emission can be realized.The experimental results show that this system has low power consumption,stable performance and high accuracy in measurement.

关 键 词：热能表 流速 温度变化 超声波 GP22 数据处理 

分 类 号：TH811.2[机械工程—仪器科学与技术]