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Observe and control equipment digital communications system

A communication system and measurement and control equipment technology, applied in the field of digital communication systems, can solve the problems of unable to control various parameters of communication protocols, unable to transmit data in real time, slow data transmission speed, etc., and achieve strong data calculation and processing capabilities and high data transmission speed Fast, low-cost results

Inactive Publication Date: 2008-03-12
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the data communication between the main control system and each sub-system of large-scale photoelectric measurement and control equipment is realized by pc104 computer and serial communication card. Slow, complex program, and cannot display the transmitted data in real time, nor can it control the parameters of the communication protocol

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  • Observe and control equipment digital communications system
  • Observe and control equipment digital communications system

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Embodiment Construction

[0013] As shown in Figure 1, the present invention comprises a digital signal processor 1, a serial port communication module 2, a programmable logic device 3, a first bus driver 4, a second bus driver 5, a Schmitt trigger 6, and a third bus driver 7 , LCD screen 8, keyboard 9, external program memory 10, external data memory 11.

[0014] Digital signal processor 1 adopts TI's TMS320VC5409DSP processor, which is the central processing unit of the whole system, and performs all calculations, combination and programming of control commands and sending and receiving data; the address line and data line of digital signal processor 1 are connected to the serial port Communication module 2; serial port communication module 2 includes 4 asynchronous serial communication chips TL16C654, which expands 16 serial communication ports for serial communication with the main control system and each subsystem; programmable logic device 3 is EPM3256AQC208 of ALTERA Company -10 CPLD chips, the ...

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Abstract

The present invention relates to a digital communication system for measuring equipments. The technic proposal is characterized in that: A digital signal processor receives data from a master control system or each subsystem through a serial communication module and operates and processes the received data. Operating and processing result of the digital signal processor is transmitted to each subsystem or the master control system through the serial communication module. In addition, a programmable logic element provides logic and time sequence control for data communication. The digital signal processor is connected with a LCD through a first bus drive and a second bus drive, thus displaying data transmission in real time through the LCD. Software programming of the present invention is completed with C++ language, thus ensuring excellent portability, high programming efficiency, maintenance and updating convenience and high code efficiency. The present invention has the advantages of small overall size, lower cost, easy debugging, high transmission speed between the master control system and each subsystem and transparent and visual transmission process to promptly find out problems.

Description

technical field [0001] The invention relates to a digital communication system, in particular to a digital communication system for measurement and control equipment. Background technique [0002] At present, the data communication between the main control system and each sub-system of large-scale photoelectric measurement and control equipment is realized by pc104 computer and serial communication card. It is slow, the program is complicated, and it cannot display the transmitted data in real time, nor can it control the parameters of the communication protocol. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a digital communication system for measurement and control equipment that is small in size, low in cost, fast in data transmission speed, simple in program, and capable of real-time display of transmitted data. [0004] The invention includes a digital signal processor, a serial port communication module, ...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 孙航曹立华耿爱辉
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI