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Supervisory Control and Data Acquisition System of Escalator Based on Fieldbus

Author: HeCheng
Tutor: ShiLiang；HuangWeiGang
School: Shanghai Jiaotong University
Course: Control Engineering
Keywords: Monitoring system MODBUS CAN Safety standards GB16899
CLC: TP274.2
Type: Master's thesis
Year: 2009
Downloads: 64
Quote: 0
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Abstract


The escalators monitoring system is built on top of the escalator control system , running at the same time with the escalator , and the escalator detection and control of real - time operating status monitoring system . With the advances in technology and the continuous improvement of people 's safety awareness , it becomes more and more complex , but also becoming increasingly important and indispensable . Escalator as a special safety equipment , its control system contains built on its monitoring system must comply with national safety standards GB16899 ; at the same time as a construction equipment , it has a strict civil engineering requirements . The traditional structure of the escalator monitoring system or subject to the safety standards to provide more functionality , or bulky and difficult to layout difficult to installation and maintenance , etc. . This paper describes the technical requirements of the the escalators standard GB16899 escalator control system including the monitoring system of the defects of existing programs , and a way to avoid the above disadvantages by introducing fieldbus solutions the selection of CAN and MODBUS as internal communication bus and external communication interface protocol , the successful development of a functional prototype . Function tests , the prototype performance is stable , safe and reliable , and the cost is reasonable , easy to expand, to meet the design objectives , suitable for a large number of applications . In design part focuses on the study and consideration of the reliability of the safety standards , software reliability , communication systems , and interface circuits, software processes and PC interface .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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