Design Of Multi-function Meter Based On MAXQ3180 IC And Research Of The Meter-reading Methods Of GPRS

At present, the power system instrumentation has entered the era of automation and intelligent.Automation and intelligent features not only require these instruments the same as the traditional measurement meter with a measurement function, but also with the measurement, protection, control, communications and other functions in order to reflect the operational status and control of electrical components, regulation of information.Learn at home and abroad this topic mature research results, using sophisticated computers, microcontroller and communication technology, developed to adapt to China's national conditions, with high cost performance and which has a monitoring, control, metering, protection, GPRS communications and other functions of the Multi-function MeterThis paper introduces and analyzes the relevant meter functional specification and design theory frist.For example, voltage, current, power, frequency, phase, power and other electrical parameters, and each phase voltage and current harmonics content, harmonic contain rate, the total harmonic distortion rate is calculated.Focused on analysis of harmonic power measurement and the method involved and a variety of indicators, Describes harmonic power measurement and analysis of significance. Then according to the relevant functional specification and requirements of multi-function meter, as well as the development trend of intelligent meters is proposed design of the GPRS multi-function meter based on MAXQ3180.Detailed hardware design of the meter, the harmonic measurement functions of MAXQ3180 and GPRS communication.Finally, this paper describes the multi-function meter software development. Meter in determining the quantity and energy of various electrical parameters calculation method Specific software design started around the achievement of targets First gave the overall program flow chart meter Then the.total flow down into a number of modules and analysis them Proposed multi-function watt-hour meter of the software design ideas and implementation methods, and structured program design method is applied to software design.Gives the software process and some of the modules of the implementation code.