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Design of Motor Protection of Air Compressor Used in Coal Mine Based on ARM

Author: ZhangLinLin
Tutor: HuangHeSong
School: Shandong University of Science and Technology
Course: Detection Technology and Automation
Keywords: motor protection air compressor ARM CAN-bus
CLC: TM307
Type: Master's thesis
Year: 2008
Downloads: 22
Quote: 0
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Abstract


Aiming at the singleness of present motor protection, which can not satisfy locale need, this article introduces a kind of real-time and all-sided motor protection system of air compressor used in coal mine based on information technology and syncretized many detection means. It can check all kinds of working parameters of the air compressor motor on spots, including over-current, lack of current, three-phase current unbalance, open-phase, inverse phase, over-voltage, under-voltage, earth-leakage, short circuit and so on. It also can check all kinds of periphery sense organ signal that affects air compressor running, including oil filter, oil fine filter, lubricant separator, environment temperature and so on. Motor protection controller can deal with the checked data, make out correct judge to all exceptional instance of motor running and realize effective protection to motor founded on software protection procedure.The system takes ARM microprocessor S3C2410 as the control core and implements hardware design of whole system by extending simple periphery circuit, including signal acquisition, alarm show circuit, storage module, CAN interface module, control protection output circuit and so on. Based on this, by embedding different application, the whole system is complete and its capability reaches the anticipative aim basically.The system realizes remote monitoring of the motor protection controller of air compressor, which means realizing multi-computer communication function between ground management computer and motor protection controller by CAN-bus. It can transmit information, acquire all kinds of characteristic quantity in real time roundly well and truly by simple communication circuit and ensure the whole system run safely.

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CLC: > Industrial Technology > Electrotechnical > Motor > General issues > Maintenance and repair of motor
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