仪表技术与传感器
儀錶技術與傳感器
의표기술여전감기
Instrument Technique and Sensor
2015年
9期
47-49,66
,共4页
高正中%郭金建%李世光%桑志峰%姚秀勇
高正中%郭金建%李世光%桑誌峰%姚秀勇
고정중%곽금건%리세광%상지봉%요수용
超声波热量表%基表%TDC-GP22%低功耗%高精度%小流量
超聲波熱量錶%基錶%TDC-GP22%低功耗%高精度%小流量
초성파열량표%기표%TDC-GP22%저공모%고정도%소류량
ultrasonic heat meter%basal meter%TDC-GP22%low power%high-precision%small flow
本文设计了一款低功耗高精度的超声波热量表。热量表MCU选用低功耗MSP430系列芯片；时间测量芯片选用了高精度计时芯片TDC－GP22，配合超声波换能器测量水的流速，配合Pt1000测量入水口和出水口的水温；通信模块有红外通信和M＿BUS两种通信方式。本文从原理、基表设计、硬件电路以及软件方面对设计进行了详细的阐述，最后通过测试结果说明了所设计的热表具有高的精确度，极低的功耗和良好的稳定性。
本文設計瞭一款低功耗高精度的超聲波熱量錶。熱量錶MCU選用低功耗MSP430繫列芯片；時間測量芯片選用瞭高精度計時芯片TDC－GP22，配閤超聲波換能器測量水的流速，配閤Pt1000測量入水口和齣水口的水溫；通信模塊有紅外通信和M＿BUS兩種通信方式。本文從原理、基錶設計、硬件電路以及軟件方麵對設計進行瞭詳細的闡述，最後通過測試結果說明瞭所設計的熱錶具有高的精確度，極低的功耗和良好的穩定性。
본문설계료일관저공모고정도적초성파열량표。열량표MCU선용저공모MSP430계렬심편；시간측량심편선용료고정도계시심편TDC－GP22，배합초성파환능기측량수적류속，배합Pt1000측량입수구화출수구적수온；통신모괴유홍외통신화M＿BUS량충통신방식。본문종원리、기표설계、경건전로이급연건방면대설계진행료상세적천술，최후통과측시결과설명료소설계적열표구유고적정학도，겁저적공모화량호적은정성。
A low-power and high-precision ultrasonic heat meter was designed in this paper .Low-power MSP 430 series IC was selected in heat meter MCU and heat meter MCU selected chip of time measurement and selected TDC -GP22 with high precision, which combined with ultrasonic transducer for measurement of water flow while with Pt 1000 measured the inlet and outlet water temperature;Communication module had two kinds of communication modes ,named infrared communication and M_BUS communi-cation respectively.This article described the design of the circuit in detail from the principle ,the basal meter,the hardware and software,and finally results from experiments show that the designed heat meters have very low power consumption ,high accuracy and good stability .
