485-infrared conversion circuit and method for transmitting data

Abstract

The invention provides a 485-infrared conversion circuit and a method for transmitting data. By the aid of the 485-infrared conversion circuit and the method, the problem that an existing electric energy meter does not have wireless transmission and remote meter reading functions can be solved. The 485-infrared conversion circuit comprises an infrared emitting circuit, an infrared receiving circuit, an infrared modulation circuit and a 485 transceiver circuit. The infrared modulation circuit and the 485 transceiver circuit are respectively connected with the infrared emitting circuit. The method for transmitting the data includes steps of transmitting the data from 485 interface equipment to infrared interface equipment; transmitting the data from the infrared interface equipment to the 485 interface equipment. The 485-infrared conversion circuit and the method have the advantages that owing to pure hardware conversion and transparent data transmission modes, the data can be transmitted from the 485 interface equipment to the infrared interface equipment, and the 485-infrared conversion circuit and the method are applicable to converting data between all 485 interface equipment and infrared interface equipment.

Description

technical field [0001] The invention relates to the technical field of testing equipment for electric energy meters, in particular to a 485-turn infrared circuit and a data transmission method. Background technique [0002] Infrared communication has the characteristics of low cost, ease of use and compact structure, so it has been widely used in small mobile devices. At present, the energy meter of the State Grid clearly indicates that it needs to have a modulation infrared port, which is currently mainly used to realize short-distance meter reading. When calibrating the energy meter on the platform, the wired 485 communication is generally used for calibrating the meter. In addition, due to the limitation of product structure, it is difficult to add additional communication circuits to the existing smart switches and other devices with metering functions that are widely circulated in the market, and only have one infrared communication interface. [0003] Therefore, it i...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing electric energy meter does not have the function of wireless transmission and remote meter reading, the present invention provides a 485-infrared circuit and a data transmission method; the present invention adopts pure hardware conversion, and the data is transparently transmitted, which solves the problem of data transfer from 485 to infrared The transmission problem applies to all data conversion between 485 and infrared

The invention uses an infrared scheme to calibrate the electric energy meter, effectively solving the problem that the communication interface does not correspond

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