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

A protocol conversion and operating system technology, applied in transmission systems, signal transmission systems, electrical signal transmission systems, etc., can solve problems such as difficult to build management strategies, increase the difficulty of developers, and lack of object-oriented programming

Inactive Publication Date: 2008-09-17
NORTHEASTERN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 operati...

Method used

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

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Embodiment Construction

[0201] The device of the invention includes a DSP central processing chip, a memory module, a display and keyboard operation module, and an uplink and downlink communication module. The memory module, the display and keyboard operation module, and the communication module are respectively connected with the DSP module. The communication module of the front-end computer is connected with the front-end computer through the RS-232 bus.

[0202] The memory module is divided into two parts: program memory and data memory:

[0203] The program memory selects the chip AT29LV1024, the 16-bit data pins (I / O) of the chip AT29LV1024 are connected with the data bus D0-D15 of the TMS320C5409, and the 16-bit address pins (A0-A15) of the chip AT29LV1024 are respectively connected with the address bus A7 of the TMS320C5409 -A22 is connected. The program memory is generally set to be read-only, so its output enable read enable line OE is grounded, the program chip select signal PS of TMS320C5...

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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...

Claims

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Application Information

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IPC IPC(8): H04L29/08G08C19/00
Inventor 张化光孙秋野王占山杨东升柳昂梁志珊宋轩宋武琪
Owner NORTHEASTERN UNIV
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