G3 data forwarder and meter recording method for same

A technology of data transponder and meter reading method, which is applied in the direction of instruments, signal transmission systems, electrical signal transmission systems, etc. It can solve the problems that the carrier signal cannot reach the carrier energy meter and the quality of the power line communication channel is poor, so as to save investment and simplify Effect of on-site installation and reduced maintenance workload

CN103927862AActive Publication Date: 2014-07-16WASION GROUP HLDG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-07-16

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Abstract

The invention discloses a G3 data forwarder and a meter recording method for the same. The G3 data forwarder comprises an MCU (master control unit), a PLC (programmable logic controller) modem circuit, an analogue front-end circuit, a line driving circuit, an RS485 circuit, a serial port circuit and a power circuit, wherein the MCU is connected with the PLC modem circuit through a serial port; the PLC modem circuit is connected with the line driving circuit through the analogue front-end circuit; the line driving circuit is connected with a power line; the MCU is connected with the RS485 circuit; the serial port of the MCU is connected with the serial port circuit; the power circuit is used for supplying power to the circuits. According to the G3 data forwarder and the meter recording method for the same, an attenuated carrier signal is firstly amplified and then retransmitted, and data transmitted to a G3 carrier network by a concentrator can be forwarded to a 485 network to indirectly bring electric energy meters adopting an RS485 communication mode into the coverage range of a G3 carrier meter recording system, so that the investment of a client is saved.
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Description

technical field

[0001] The invention relates to a G3 data transponder and a meter reading method thereof. Background technique

[0002] At present, the quality of the power line communication channel on the low-voltage side is very bad, and the quality of carrier communication is affected by various factors such as various noises, input impedance changes, and transmission attenuation. Therefore, the power carrier signal is transmitted from the concentrator to the carrier meter at a long distance. The severe test of the concentrator often has the problem that the carrier signal sent by the concentrator cannot reach the scattered carrier energy meters installed in a station area. In addition, in the automatic meter reading system, in addition to the carrier meter and the carrier concentrator, there are also a large number of electric energy meters that communicate based on the RS485 interface. How to integrate the mass-installed energy meters based on RS485 communication into...

Examples

Embodiment Construction

[0030] Such as figure 1 As shown, the present invention includes a main control MCU, a PLC circuit, an RS485 circuit, a serial port circuit and a power supply circuit. The main control MCU is connected to the PLC circuit through the serial port; the main control MCU is connected to the RS485 circuit through the 485 interface; the main control MCU is connected to the serial port circuit through the serial port. The power supply circuit provides power for the above-mentioned circuits, which includes an AC power supply circuit and a DC power supply circuit.

[0031] Such as figure 2 As shown, the main control MCU of the present invention adopts the microcontroller chip based on the ARM Cortex-M3 core of the model of NXP Company that is LPC1768.

[0032] The main control MCU is connected to the UART0 interface through the AD port for debugging; it is connected to the UART3 interface through the serial port for receiving and sending infrared data; it is connected to the PLC base...