In order to improve the accuracy of the heating system, designed a smart meter which main function is hearting measurements. The system embedded ARM microprocessor with high speed LPC2210 and the external circuits as the controller,adopts the U.C/OS-II operating system management tasks improve the system of timely. In the temperature gathering using two high accuracy figures temperature sensors DS18B20,the temperature of the measured values is converted to digital measured in binary mode, said temperature convenient intuitive. Two figures temperature sensors DS18B20 take the import and export of the gathering. Through RS232 bus to achieve the remote copy tables and more accurate control of heat loading facilitate the heat of the effective, management for heat.%为提高供暖系统中热量计量的准确性,设计了以热计量为主要功能的嵌入式智能仪表.在该热量表中嵌入了ARM高速微处理器LPC2210及其外围电路作为主控制器,采用μC/OS-Ⅱ操作系统管理各项任务,提高了系统的实时性.在温度采集中采用两个具有高精度的数字温度传感器DS18B20,分别承担进出口的温度采集,并直接把所测的温度值转换成数字量用二进制方式表示,使得测温方便直观且精度高.通过RS232总线实现远程抄表功能以及更加准确的城区热负荷监控,便于热力公司对供热量的有效管理.
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