Main control circuit of centralized meter reading system

Abstract

The invention provides a main control circuit of a centralized meter reading system. The main control circuit comprises a main chip, a power module, an SRAM (Static Random Access Memory) data storage module, a clock module, a man-machine operation interface, an SD (Secure Digital) card, an LCD (Liquid Crystal Display) liquid crystal display screen, a GPRS (General Packet Radio Service) wireless communication module, an MBUS (Meter-Bus) channel selection module, an MBUS communication module, a 485 communication module and an RS232 converter, wherein the power module is used for providing voltages. The communication modes of the main control circuit are optionally wireless and wired modes; the GPRS remote communication function is capable of providing reliable operations and high-efficiency operations for remote monitoring and operations; meanwhile, a concentrator and meters are connected in two manners of 485 and MBUS, and therefore, the main control circuit is simple and convenient in construction and good in compatibility with commercial heat meters; in addition, the MBUS communication module is matched with the MBUS channel selection module, and simultaneous working of a plurality of channels and district networking are realized by virtue of channel selection, and therefore, the market requirements are met to the utmost extent; the whole circuit is good in data acquisition effect and high in instantaneity and accuracy; besides, real-time reliable operations can be realized by use of the man-machine operation interface.

Description

technical field [0001] The invention relates to a main control circuit of a centralized meter reading system, and belongs to the technical fields of thermal heating control and thermal meter reading. Background technique [0002] In the current heating system, the emergence of centralized meter reading technology has aroused widespread concern from all walks of life. Centralized meter reading technology is the result of the integration of computer technology, intelligent control technology, communication technology and embedded technology, and the cross penetration of multiple fields and disciplines. It can realize the remote centralized reading of water meter, heat meter and electric meter data and the remote operation of the three meter terminals, realize the centralized management of data, solve the disadvantages of untimely, wrong and missed reading of traditional manual meter reading, and serve the relevant departments A solid foundation has been laid for the developme...

AI Technical Summary

Problems solved by technology

[0004] At present, the main control circuit used in the centralized meter reading system has the following problems: the network cannot be realized in the area; the compatibility with the heat meter is poor; the data collection effect, real-time performance and accuracy are poor; the consistency of the formed circuit board is relatively poor

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