MBUS bus sending signal converting circuit and converting method thereof

Abstract

The invention discloses an MBUS bus sending signal converting circuit. The MBUS bus sending signal converting circuit comprises a controller, a serial port signal converting circuit and an MBUS channel selection circuit, and the controller, the serial port signal converting circuit and the MBUS channel selection circuit are in series connection in sequence; the serial port signal converting circuit converts levels of data sent by the controller into MBUS signal levels and sends the levels to the MBUS channel selection circuit; the MBUS channel selection circuit receives MBUS channel selectionsignals sent by the controller to select corresponding MBUS channel sending data. The invention further discloses a converting method of the MBUS bus sending signal converting circuit. By means of theMBUS bus sending signal converting circuit and the converting method of the MBUS bus sending signal converting circuit, through a reliable hardware circuit, communication between a signal sending circuit of a one-path communication interface and a sending signal line of a two-path MBUS bus of the controller is achieved, the communication interfaces of the controller are saved, and the hardware consumption of the controller is greatly lowered; meanwhile, the MBUS bus sending signal converting circuit is simple in principle, reliable and low in cost.

Description

technical field [0001] The invention specifically relates to an MBUS bus transmission signal conversion circuit and a conversion method thereof. Background technique [0002] With the development of national economy and technology and the improvement of people's living standards, bus communication technology has become an indispensable means of communication in industrial production and electrical and electronic equipment. The MBUS bus is widely used in metering instruments such as water meters, electric meters or gas meters, and plays an important role in data communication. [0003] At present, the application of four-meter centralized reading (electricity meter, water meter, gas meter and heat meter) is more and more extensive. At present, there are basically two external MBUS interfaces of the four-meter centralized reading converter, that is, two MBUS interfaces. The two-way MBUS interfaces need to communicate with the CPU of the converter through the serial port, tha...

AI Technical Summary

Problems solved by technology

[0004] However, due to the scarcity of communication interfaces of CPUs currently on the market, the current two-way MBUS communication interfaces need to occupy two communication buses of the CPU, which takes up a lot of hardware resources of the CPU.

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