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Research on the Communication-Capable Low Voltage Switchgear Based on CAN Bus

Author: HeWei
Tutor: ChenZuo
School: Hebei University of Technology
Course: Control Theory and Control Engineering
Keywords: Communication appliances Intelligent Relay CAN bus P87C591
CLC: TM564
Type: Master's thesis
Year: 2004
Downloads: 196
Quote: 2
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Abstract


Microelectronics, microprocessors and fieldbus technology in the transformation of low-voltage electrical switches , communication design low voltage electrical switches , can realize the function of a combination of traditional low-voltage electrical components and intelligent , and via bus communication technology systematic application to achieve low-voltage electrical control and automation , it represents an important direction of development of the low-voltage electrical 21st century . This paper can be the communication low pressure switch electrical products as well as fieldbus technology at home and abroad to study and compare , summarize some typical module can be the communication low pressure switch electrical design and select the CAN bus as a means of communication . Then we microprocessor-based intelligent design a limited speed cutting current relay based on CAN bus communication design and research experience and learn from , and for further study of the low - voltage electrical switches based on CAN bus communication . The traditional limit speed cut Relay need electromagnetic current relay , time relay and signal relay grouped together to be able to achieve a single point of protection function . Limit speed limit speed cutting current relay of communication intelligent design is not only able to independently complete a single point of cut protection features , and be able to relay operating parameters ( such as the current time ) is displayed in the field and modify . More importantly, each communication smart relay can also be connected to the CAN bus through its own CAN communication interface for bidirectional digital communication via the bus , as the nodes on the bus . Upper monitor the PC nodes so that we access on the bus , will be able to communicate via the bus on all smart relay node remote status monitoring , remote setting and control of the lower node action parameters and action status , you can also on the the lower node upload acquisition data storage, analysis and processing , tend to be more perfect , in line with the requirements of the power system relay protection . Paper describes in detail the theoretical basis for the design , communication low voltage electrical switch node and monitor PC node hardware design and works as well as related software programs design ideas and preparation method .

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CLC: > Industrial Technology > Electrotechnical > Electrical > Electrical switches,circuit breakers > Variety of switching
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