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Design and Applications of Network-Type Intelligent Flow Totalizer

Author: WeiSiJia
Tutor: ZhangHuaQiang
School: Harbin Institute of Technology
Course: Electrical Engineering
Keywords: GPRS Flow Totalizer Data acquisition Remote meter reading
CLC: TH814
Type: Master's thesis
Year: 2008
Downloads: 70
Quote: 1
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Abstract


With the development of economy and business management level better and better, the conventional manual meter-reading method which is installing metering instrument and regular manual meter-reading,perambulation,maintenance and data statistic, however, without communication function. Along with the sharp increase of the number of users, defects become more obvious, for example, managers can’t realize the real-time running situation of field instrument.This method is time-consuming, and, the effect is bad.So we need a new way to resolve it.The background of this paper is the stream measure monitoring system’s technology transformation of WeiHai steam supply and power generating plant,and the purpose of this paper is to set up a new monitoring system which can resolve problems in old system, such as high supervise-cost, low transmission speed, low efficiency and poor reliability.First, according to the management requirement of management center, chief project was designed which includes network-type intelligent flow totalizer (flow totalizer, data collection unit, GPRS communication)and computer management center.Second, the field signals of steam is converted into standard electronic signal by the sensor and transducer, and then these data are processed and calculated by flow totalizer unit based on P80C552 MCU. The collected data from FRAM FM24C04 are transformed industry standard protocols by data acquisition unit based on AT89C51 MCU. Using E2PROM AT24C512 simulate I~2C time sequence for data storage, Packing data by embedded GPRS module , transmitting to the host by GPRS network for monitoring,administrating and charging.At last,introduces the design process of embedded GPRS model which uses ARM7,embedded operation systemμC/OS-П.It has been proved that the system designed in this paper achieves remote monitoring to stream measure system and runs safely and reliably by field running.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Instruments, meters > Thermal measuring instruments > Flow Meter
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