An intelligent protocol conversion device and method based on embedded QNX operating system

Abstract

The invention provides a device and a method for intelligent terms conversion. The device comprises a DSP central processing chip, a memory module, a display and keyboard operation module and an uplink-downlink communication module, wherein the memory module, the display and keyboard operation module and the uplink-downlink communication module are connected with the DSP central processing modulerespectively, a front-end computer communication module is connected with a front-end computer through a RS-232 bus, a RS-232 communication module is connected with a plurality of sub-stations RTU bya serial expansion circuit, a term converter is arranged between the RTU and the front-end compute of a power communication system, the uploaded communication protocol of the sub-stations RTU are intelligently recognized by a fuzzy expert system, the format of the recognized terms are converted into a unified terms format, uploaded to the front-end computer, and uploaded to each level of workstation by the front-end computer. The invention has the advantages that operators can realize automatic recognition and conversion of terms of interconnected two parties by the device without knowing theterms types of the interconnected two parties, thus avoiding the error possibly brought by manual operation.

Description

technical field [0001] The invention belongs to the field of power communication, in particular to an intelligent protocol conversion device and method based on an embedded QNX operating system. Background technique [0002] In the current power system, the functions of remote measurement, remote signaling, remote control and remote adjustment have been widely used. The key issue to realize these functions is to realize reliable communication, and both parties in the communication must adopt the same protocol. [0003] Compared with the requirements of network standardization of electric power automation system, the requirement of unified standardization of data transmission protocol is more urgent. In the initial stage of electric power automation, most manufacturers chose self-defined protocols or popular protocols at home and abroad for the choice of communication protocols. The so-called self-defined protocol means that the manufacturer customizes the transmission fram...

AI Technical Summary

Problems solved by technology

[0024] 2. Due to the greatly increased overhead of inter-process communication and context switching

This is a major reason most developers don't use the system;

[0025] 3. It is difficult to build an effective management strategy for QNX operating system process scheduling;

[0026] Since the development based on the QNX operating system is a pure C++ bottom layer, it does not have the object-oriented programming developed on the basis of Windows, which increases the difficulty for developers

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