基于DSP的通訊程序設(shè)計(jì)及在電機(jī)監(jiān)控中的應(yīng)用
[Abstract]:DSP-like intelligent device communication (mostly full-duplex serial communication), must write their own communication applications. The key of writing communication program is communication protocol. This design takes TMS320F2812DSP as the research object and Modbus as the communication protocol, establishes the communication system of TMS320F2812, and finally applies it to the motor monitoring system composed of brushless DC motor and TMS320F2812,eviewET070HMI. In this paper, the general situation and development trend of DSP and Modbus protocols at home and abroad are described, the purpose and content of this design are analyzed, and the composition of communication system, Modbus transmission mode, transaction processing process are analyzed. Error detection methods are analyzed in detail. Then, the module of TMS320F2812 communication system is analyzed and designed, and the program flow chart of each module is drawn. The system parameters are initialized including TMS320F2812 serial communication interface, GPIO universal serial port, PIE interrupt meter, EV event manager and so on. The processing of communication data includes data frame receiving, parsing, checking, processing and exception response. The function code program of Modbus protocol is designed, including read coil state function, read and hold register function, force a logic coil on and off function, write a hold register function, force a serial logic coil to open and break function. Write specific binary values to a series of contiguous retention registers. Design data receive interrupt subroutine and send interrupt subroutine. After all the module program design is completed, the serial port assistant is used to verify whether the data is correct or not, and after the verification result is correct, the TMS320F2812 communication program is applied to the motor monitoring system. The eviewET070HMI embedded driver follows the Modbus communication protocol. It can communicate directly with the host computer TMS320F2812, design the monitoring interface of eviewET070, monitor and control the starting and stopping, steering, rotating speed, phase voltage and phase current of the motor. At the same time, the communication parameters are set up, the memory of the monitoring system is opened up, and the address mapping of the monitoring variables is carried out. Finally, the on-line debugging of the motor monitoring system is carried out in the laboratory, and the communication effect between eviewET070HMI and TMS320F2812 in the process of motor monitoring is shown by means of table needle, trend chart and so on. The experimental results show that the TMS320F2812 communication program based on Modbus protocol is real-time, reliable and successfully applied to the motor monitoring system, which effectively solves the communication problem of the system.
【學(xué)位授予單位】:長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:TM306
【共引文獻(xiàn)】
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