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Master-salve distributed system and parallel communication method applying the same

A technology of distributed system and communication method, applied in the field of parallel communication, can solve the problems of slow speed, large transmission distance and large amount of data transmission, and high speed requirements

Inactive Publication Date: 2009-04-22
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this communication method cannot meet the requirements in communication occasions where the transmission distance is not far, the transmission data volume is large, and the speed requirements are high.
The disadvantage of using serial communication in the design of the above scheme is that the amount of transmitted data is small and the speed is not fast

Method used

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  • Master-salve distributed system and parallel communication method applying the same
  • Master-salve distributed system and parallel communication method applying the same
  • Master-salve distributed system and parallel communication method applying the same

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Embodiment Construction

[0035] PC104 is an industrial computer bus standard. There are two versions of PC104, 8-bit and 16-bit. It is fully compatible with general PCs (personal computers), but PC104 is more integrated than general PCs. On the 90×96mm PCB (Printed Circuit Board, printed circuit board) board, the CPU is integrated. (central processing unit), DRAM (dynamic memory), display, IDE, USB port, serial port, parallel port, network port, floppy drive interface, etc., every function that users can find in the desktop PC system can be realized in PC104 , and the software is also easy to configure. PC104 can run DOS, Windows and many real-time operating systems. These features make the configuration of PC104's software and hardware very easy. The system volume that builds with PC104 is very small and exquisite, but function is very powerful however. In addition, it has extremely low power consumption (1-2 watts for a typical module) and a stacked bus form (determining its high reliability), so...

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Abstract

The invention provides a master-slave distributed system which comprises a master system consisting of PC104 modules, and slave systems consisting of a plurality of 51 single-chip microcomputers. A dual-port RAM is taken as a buffer area for data interaction between the master system consisting of the PC104 modules and the slave systems consisting of a plurality of 51 single-chip microcomputers. The system further comprises a programmable logic device. The system has the advantages of high transmission speed, good real-time characteristic, high reliability and simple circuit. Parallel communication between the PC104 and a plurality of 51 single-chip microcomputer systems can be achieved without address access conflict by combining the application of the programmable logic device. The invention also provides a parallel communication method which is applied to the master-slave distributed system.

Description

technical field [0001] The invention relates to the field of distributed systems, in particular to a master-slave distributed system and a parallel communication method applied to the system. Background technique [0002] In many real-time industrial control and data acquisition systems, a master-slave distributed system composed of PC104 and multiple 51 single-chip computers is often used. In order to coordinate the work of the system, the interface of PC104 and 51 single-chip computers is designed and implemented to meet the communication requirements. is the key to realize the system. The realization scheme of the prior art generally adopts the serial communication mode, such as figure 1 Shown: [0003] The PC104 module has two standard 9-pin RS-232C serial ports, and the MCS-51 single-chip microcomputer has a full-duplex serial communication interface. ) 3 leads to realize the serial port connection. In addition, because the PC104 serial port signal is standard RS-23...

Claims

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Application Information

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IPC IPC(8): G06F15/167G05B19/418
CPCY02P90/02
Inventor 单晟徐秉娴杜庆刘黎明
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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