M-BUS communication interface converter used for centralized meter reading system and compatible with European standard agreement

Abstract

The invention discloses an M-BUS communication interface converter used for a centralized meter reading system and compatible with European standard agreement. The M-BUS communication interface converter comprises a master controller, an upward communication module and a downward communication module, wherein the upward communication module and the downward communication module are connected with the master controller, the master controller comprises a master control chip and a Flash memory, and the upward communication module comprises an upward carrier module which is connected with a concentrator in the centralized meter reading system; the downward communication module comprises a first metering MBUS interface used for being connected with an external water meter, a natural gas meter and a heat meter, and a downward communication RS485 interface connected with an external electricity meter. Data of the electricity meter are acquired through the downward communication RS485 interface, data of the water meter, the natural gas meter and the heat meter are acquired through the first metering MBUS interface, data are acquired and transferred to the centralized meter reading system through the upward carrier module, and coexistence of the centralized meter reading system and another external meter reading system is realized.

Description

technical field [0001] The invention relates to the technical field of communication interface converters, in particular to an M-BUS communication interface converter used in centralized copying systems and compatible with the European standard protocol. Background technique [0002] The communication interface converter is an important part of the low-voltage power line carrier water, electricity, gas and heat multi-meter centralized reading system, which mainly realizes the conversion between different communication protocols. In the prior art, the communication modes supported by the converter include meter-bus (M-BUS, meter-bus) communication mode, RF micropower wireless communication mode and 485 communication mode. Among them, RF micro-power wireless communication cannot supply power to water, gas, and heat meters, and an external power supply or backup power supply must be equipped and replaced regularly; the 485 communication method has the problem of inflexible topo...

AI Technical Summary

Problems solved by technology

Among them, RF micro-power wireless communication cannot supply power to water, gas, and heat meters, and an external power supply or backup power supply must be equipped and replaced regularly; the 485 communication method has the problem of inflexible topology and the need for power supply

[0003] M-BUS switching bus is a power supply, non-polarity, two-wire communication mechanism. The communication equipment has a large capacity and a high communication rate. It is especially suitable for multi-meter centralized reading systems. However, many existing water-air-heat meter reading systems It already exists, and some meters are based on the European standard protocol. The existing converter does not have the M-BUS communication function that supports the coexistence of the centralized reading system and the European standard protocol. Therefore, water meters, electricity meters, and natural gas meters cannot be realized. and heat meter data collection and forwarding

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