Design and implementation of multi-computer communication for distributed data collection system
Da Li · Journal of Changchun Post and Telecommunication Institute · 2003
An implementation scheme of multicomputer communication for distributed data collection system is proposed. The principles of multicomputer communication, implementation method, design of hardware and software are described. The design of hardware is directly for 8031 single chip microprocessor of MCS51 series.Constitutes the distributed data collection system with the multicomputer communication mode of serial interface of 8031 single chip micro. Subordinate single chip micro be used of data collection and processing, but master subordinate single chip micro be used of synthesize processing. The master subordinate single chip micro can send out managerial command according to the condition of system at any moment. The usually standard of RS232C of serial interface is replaced by RS422A in this system. Using the differencing receiver and transmitter, reliability was improved. In the software design of this system, the communicate data is separated into data frames and command frames and is transmitted or received respectively. It is in favor of modularization of program design. The design method can be generalized for other system and is valuable for the designs of both hardware and software.