Automatic meter reading system of electric energy meter

Abstract

The invention discloses an automatic meter reading system of an electric energy meter. The automatic meter reading system comprises an acquisition system and a collection system, the acquisition system comprises a microprocessor, the microprocessor is connected with an analog-to-digital conversion chip, a display, a GPRS communication device, a control circuit and a read only memory respectively, the analog-to-digital conversion chip is connected with a filter circuit and an amplification filter circuit respectively, the filter circuit is connected with a three-phase voltage transformer, the amplification filter circuit is connected with a three-phase current transformer, the acquisition system is connected with the GPRS communication terminal of the collection system through the GPRS communication device, the collection system also comprises a host computer, and the host computer is connected with the GPRS communication terminal, a display panel and a memory respectively. The automatic meter reading system does not need artificial onsite meter reading, saves manpower, is unlimited by the distance and space, can realize momentary meter reading, and saves much meter reading time; and the GPRS network has a wide cover range, and can meet the meter reading need of the electric energy meter, so the electric energy meter is always online, and the traffic cost is low.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to an automatic meter reading system for electric energy meters. Background technique [0002] With the rapid development of my country's economy, all walks of life are increasingly dependent on electricity, and the use of electric energy meters is becoming more and more widely distributed. Due to the widespread distribution of electric energy meters, the traditional manual meter reading takes a long time, costs a lot of manpower, and there are potential dangers in manual meter reading, which can no longer meet the needs of today's social development. At present, there are many technologies used for meter reading, such as RS485 bus, infrared and power line carrier, etc. These meter reading technologies are relatively mature, but their applications have their own limitations. The distance cannot exceed 1200m. Infrared meter reading requires manual on-site meter reading, and pow...

AI Technical Summary

Problems solved by technology

Due to the widespread distribution of electric energy meters, the traditional manual meter reading takes a long time, costs a lot of manpower, and there are potential dangers in manual meter reading, which can no longer meet the needs of today's social development.

At present, there are many technologies used for meter reading, such as RS485 bus, infrared and power line carrier, etc. These meter reading technologies are relatively mature, but their applications have their own limitations. The distance cannot exceed 1200m. Infrared meter reading requires manual on-site meter reading. Power carrier meter reading is limited in transmission distance due to electromagnetic interference.

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