Signal conversion equipment of remote power meter reading system

Abstract

The invention relates to signal conversion equipment of a remote power meter reading system. The signal conversion equipment comprises an RS485 receiving and transmitting chip, an STM8CPU, an infrared modulation chip, an infrared demodulation chip, an infrared indicating lamp and an RS485 communication indicating lamp, wherein a group of receiving and transmitting ports are formed in the RS485 receiving and transmitting chip to the outside and are locally called by electric energy information acquisition equipment; a group of ports are respectively formed in each of the infrared modulation chip and the infrared demodulation chip to the outside and are used for interacting infrared signals with an electric energy meter; the STM8CPU is used for processing RS485 signals received by the RS485 receiving and transmitting chip and the infrared signals received by the infrared demodulation chip and performing signal transmission so as to realize data conversion under different signals; the infrared indicating lamp is used for indicating that whether the infrared demodulation chip is in a working state or not; the RS485 communication indicating lamp is used for indicating that whether the RS485 receiving and transmitting chip is in a working state or not. The signal conversion equipment can be mounted on the electric energy meter so as to convert signals, therefore, demands for acquiring the data are met, and various expenses are greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of local communication of electric power equipment, and relates to a signal conversion device capable of realizing local communication from an RS485 interface of an electric energy information collection device of an electric power remote meter reading system to an infrared interface of an electric energy meter. Background technique [0002] With the advancement of the SG186 information system project of the State Grid Corporation of China, the construction of remote centralized copying systems is being carried out in power systems all over the country. Within a few years, the construction of remote centralized copying system will be the top priority of power transformation. With the development of the power information collection system, various users in the power market, such as special transformer users, residential users, and general industrial and commercial users, are gradually being incorporated into ...

AI Technical Summary

Problems solved by technology

However, in the vast power market, there are still a large number of electric meter equipment, which have all communication capabilities except RS485 communication. Therefore, it is difficult to directly collect the data of these electric energy meters through the remote centralized reading system

However, since it takes a lot of manpower, material and financial resources to replace these electric energy meters with electric energy meters with RS485 communication capabilities, it is impossible to completely replace them with the latest researched devices with RS485 communication capabilities in a short period of time.

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