KNX-Modbus TCP protocol conversion gateway based on Cortex-M processor

Abstract

The invention discloses a KNX-Modbus TCP protocol conversion gateway based on a Cortex-M processor, which mainly comprises a KNX communication module, a gateway configuration module, a Modbus TCP communication module and a protocol conversion module in functional division, wherein the KNX communication module supports a communication protocol of KNX on a TP1 medium; the gateway configuration module supports a standard TCP / IP protocol and realizes a function of network communication with upper computer configuration software; the Modbus TCP communication module supports a Modbus TCP protocol and common function nodes; and the protocol conversion module comprises equipment mapping and data mapping between a KNX system and a Modbus TCP system, all mapping is stored in shared data memory pools, and the protocol conversion module realizes mapping and two-way interaction of the data through memory management and task scheduling. The KNX-Modbus TCP protocol conversion gateway based on the Cortex-M processor has the advantages of small volume, high reliability, flexible configuration and the like. Integration and service sharing between the KNX system and the Modbus TCP system can be realized conveniently and efficiently.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of building automatic control, in particular to the technical field of building automatic control based on KNX and Modbus TCP protocols. [0003] Background technique: [0004] KNX is the abbreviation of Konnex. In May 1999, the three major European bus protocols EIB, BatiBus and EHSA merged to form the Konnex Association and launched the KNX protocol. Based on EIB, the agreement takes into account the physical layer specifications of BatiBus and EHSA and absorbs the advantages of configuration modes in BatiBus and EHSA, providing a complete solution for home and building automation. KNX is an open international standard in the field of residential and building control that has been officially approved. At the same time, KNX became the Chinese national recommended standard GB / T 20965-2013 "Control Network HBES Technical Specifications - Residential and Building Control System" in May 2013 ". [0005...

AI Technical Summary

Problems solved by technology

[0006] SCADA systems are often used in rail transit. Many lighting systems at rail transit sites use KNX systems, while many devices and integration interfaces are still based on Modbus. SCADA systems can easily integrate Modbus systems and devices, but KNX systems cannot. , so an integrated gateway is needed, which can seamlessly integrate the KNX lighting system into the entire monitoring system. At present, there is no domestic manufacturer to develop such a gateway. This invention focuses on meeting this market demand

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