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Three-phase prepayment electric energy meter system based on GPRS communication and control method thereof

A technology of prepaid electric energy meter and GPRS module, applied in general control system, radio transmission system, transmission system, etc., can solve the problems of increased cost of remote meter reading installation, inability to realize two-way communication and meter reading at any time, and reach the scope of application wide, prevention and control of duplication of IC cards, and low operating costs

Inactive Publication Date: 2009-09-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method cannot realize two-way communication and meter reading at any time
At the same time, it also increases the cost of remote meter reading installation.

Method used

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  • Three-phase prepayment electric energy meter system based on GPRS communication and control method thereof
  • Three-phase prepayment electric energy meter system based on GPRS communication and control method thereof
  • Three-phase prepayment electric energy meter system based on GPRS communication and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0075] Such as figure 1 As shown, the module 10 three-phase prepaid electric energy meter mainly includes the following units:

[0076] (1) GPRS module 11: installed on the energy meter end, connected to the GPRS network during work, communicates with the GPRS service software, receives instructions and reports data such as the state of the energy meter and available electricity.

[0077] (2) Electric energy metering module 12: including sampling voltage and current from three-phase four-wire, outputting to the electric energy metering module for metering, the chip processes the sampled data, measures active electric energy, communicates with the micro-control module through the SPI interface, and uses the serial Way of working.

[0078] (3) Power meter power supply 13: 220V AC power is taken from the three-phase power line, converted into 12V AC power through a transformer, then converted into 5V DC power supply through DC voltage stabilization and capacitor rectification, a...

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Abstract

The invention provides a three-phase prepayment electric energy meter system based on GPRS communication and a control method thereof. The system comprises an electric energy meter and a GPRS server, wherein the electric energy meter comprises an electric energy metering module, a GPRS module, a display module, a micro-processing module, a switch control module and a meter power supply; the GPRS module realizes the remote meter-checking and charging functions so that a user pays dues in a power supply center, and the power supply center can recharge the electric energy meter by the GPRS server; the electric energy meter periodically submits states, used electricity quantity and usable electricity quantity, and the display and control modules are used for displaying the states and the electricity quantity, controlling alarms and switching on / off a switch. The method comprises the following steps: a user firstly purchases and then uses the electricity, and a power supply part remotely checks, recharges and controls the three-phase prepayment electric energy meter. The invention realizes the random meter-checking function, the electric energy meter state monitoring function, the random electric energy meter parameter (such as the rate) updating function and eliminates the hidden danger by the user authentication.

Description

technical field [0001] The invention relates to the fields of three-phase electric energy measurement and remote meter reading, in particular to a three-phase prepaid electric energy meter system based on GPRS communication and a control method thereof. Background technique [0002] Three-phase prepaid energy meters have been widely used at present, and its most important technologies include: IC card and RFID technology, three-phase power measurement technology, power management technology, remote meter reading technology, etc. The existing IC card technology has been very maturely applied in the prepaid energy meter, but the IC card technology also has certain security risks, such as electricity theft through the interface, duplication of the IC card, etc. may occur. Power metering technology, at present, mostly uses solid-state technology instead of mechanical and electronic technology. The advantage of doing so is that the accuracy of the electric energy meter is higher ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07F15/06G01R22/06H04B7/00G05B15/02
Inventor 陆以勤蔡韬沈锡放
Owner SOUTH CHINA UNIV OF TECH
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