Abstract
This study designs a single-phase food measurement circuit for food system users. The circuit adopts a high-precision single-phase energy metering chip ADE7755 produced by the United States ADI company for the acquisition of the electrical energy and uses the high-performance SCM AT89C51 as a whole control center of electrical acquisition circuits. The working principle schematic of the single-phase energy metering chip circuit, the diagram of the components of the entire energy metering circuit and the software flow chart are introduced in study. At last, the test situations is introduced, the test results are analyzed and compared, the test showed that the energy metering circuit has the high precision.
Highlights
Because the reform of food system in food system and the rational use of the electronic, appear a variety of watt hour meter with electronic type, broke the situation of there has only watt hour meter with induction type in the past
In view of the above situation, a simple and practical electric energy metering circuit with singlephase electronic type is designed in this study to the food system user
A high precision single-phase electric energy metering chip ADE7755 is adopted in this circuit to collect the food system by users and a high performance MCU AT89C51 is adopted to as the control center of the whole electric energy collection circuit
Summary
Because the reform of food system in food system and the rational use of the electronic, appear a variety of watt hour meter with electronic type, broke the situation of there has only watt hour meter with induction type in the past. The electric energy metering device is a kind of weighing and measuring equipment which records how many electrical energy are used by food system customers, is the "measurement instrument" of trade settlement to the sale of electric energy for food systems. It is accurate or not, will directly affect the normal recovery funds of food systems and has a very important significance for the promotion of reducing consumption, the saving of electric energy, the strengthen economic accounting, the improvement of management and the increase of economic benefit, etc., (Zhao et al, 1999; Yang et al, 2001)
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