Multi-frequency non-house-entry type electric energy meter missort checking device and method based on PLC communication technology

Abstract

The invention provides a multi-frequency non-house-entry type electric energy meter missort checking device and a multi-frequency non-house-entry type electric energy meter missort checking method based on a PLC communication technology. The multi-frequency non-house-entry type electric energy meter missort checking device is composed of a host and a slave, wherein the host adopts an RS485 communication mode at a plurality of electric energy meter wire outgoing ends and reads different electric energy meter address information, a modulation circuit modulates the different electric energy meteraddress information into high-frequency carrier signals of different frequencies, transmits the high-frequency carrier signals to a user side by using the PLC communication technology, designs a wave-blocking circuit between the modulation circuit and electric energy meters, and prevents the high-frequency carrier signals from being transmitted between the adjacent electric energy meters and affecting the reliability of detection results; the high-frequency carrier signals are diverged to the space due to the change of the transmission impedance at household air switches of the user side, theslave is designed with a high-frequency carrier signal detecting antenna for detecting the high-frequency carrier signals at each user side, and the high-frequency carrier signals are demodulated toobtain high-frequency carrier signal frequencies and electric energy meter address information corresponding to users, thereby realizing non-house-entry type electric energy meter missort checking.

Description

technical field [0001] The invention belongs to the technical field of electric energy meter serial detection technology, and specifically relates to a multi-frequency non-residential electric energy meter serial inspection device and method based on PLC (power carrier) communication technology. Background technique [0002] With the continuous expansion of urban planning, the number of new residential buildings is increasing day by day. Most of the energy meters in the buildings are installed in a centralized manner. Since there is a certain distance between the installation site of the energy meter and the user's home line, and it is covered by shelters, on-site wiring It is difficult for personnel to ensure that the wiring relationship between the energy meter and the user is completely correct during the wiring process, which leads to the occurrence of the problem of the energy meter being connected to the user. [0003] In order to solve the problem of cascading electri...

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Problems solved by technology

[0002] With the continuous expansion of urban planning, the number of new residential buildings is increasing day by day. Most of the energy meters in the buildings are installed in a centralized manner. Since there is a certain distance between the installation site of the energy meter and the user's home line, and it is covered by shelters, on-site wiring It is difficult for personnel to ensure that the wiring relationship between the energy meter and the user is completely correct during the wiring process, which leads to the occurrence of the problem of the energy meter being connected to the user

[0003] In order to solve the problem of cascading electric energy meters and ensure the normal use of electricity by users, three methods are mainly used to check the cascading electric energy meters. Realize the investigation of the connection between the electric energy meter and the household, but it will affect the normal electricity consumption of the user; the second is to install the detection device at the outlet of the electric energy meter and the user's home at the same time, and judge the connection between the outgoing line of the electric energy meter and the detection device in the user's home. In this case, there is an obvious problem in this method, which requires the cooperation of the user and enters the user's home, which seriously affects the daily life of the user; the third is to send a signal to the user side at the outlet end of a certain electric energy meter, and use the detection device to detect the signal at different users , it is determined that the user with the strongest detected signal strength corresponds to the energy meter. This method can only detect one energy meter at a time, and the detection efficiency is low.

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