Double-terminal communication circuit and communication method thereof

Abstract

The invention discloses a double-terminal communication circuit, comprising a power module, a controller module, a first 485 communication module, a second 485 communication module and a conversion switch module. A first communication interface of the controller module is connected with the first 485 communication module. The power module supplies power. The controller module communicates with a collection terminal through utilization of the first 485 communication module. The controller module communicates with electric energy meters through utilization of the second 485 communication module.The controller module controls direct communication between the collection terminal and the electric energy meters through control over switch-on and switch-off of a conversion switch. The inventionalso discloses a communication method for the double-terminal communication circuit. According to the double-terminal communication circuit and the communication method, in a mode of increasing the double-terminal communication circuit, the communication between double terminals and the electric energy meters is realized, communication timeliness is high and reliability is high. The newly increased double-terminal communication circuit can be directly added to an existing power system. A topological structure and a communication process of the existing system do not need to be changed. Cost islow.

Description

technical field [0001] The invention specifically relates to a dual-terminal communication circuit and a communication method thereof. Background technique [0002] With the development of economy and technology, electric energy has become an indispensable secondary energy source in people's production and life, bringing endless convenience to people's production and life. [0003] In the operation of the power system, the wired communication between the energy meter and the collection terminal is one of the most important parts. The existing meter reading method for electric energy meters with 485 communication mode all communicates with multiple electric energy meters through the downlink 485 communication module of a single collection terminal to realize the communication mode of one master and multiple slaves, and the collection terminal is used as the communication host. As a communication slave, the electric energy meter adopts the 485 communication mode, and the comm...

AI Technical Summary

Problems solved by technology

However, the real-time performance of this method is poor, it is difficult to meet the demand, and it has great limitations

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