NDLI: Elevator absolute landing position sensor using infrared interrupter and MEMS accelerometer

Content Provider	IEEE Xplore Digital Library
Author	Tou, W.K. Vai, M.I. Cheang, S.U.
Copyright Year	2015
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Univ. of Macau, Macau, China (Tou, W.K.; Vai, M.I.; Cheang, S.U.)
Abstract	Absolute encoder is a common solution to detect the position of elevator cabin in a reliable way, yet it require extra cabling and chain to accomplish the work. The installation and maintenance cost is the main trade-off. However, absolute position is only required by certain cases such as re-leveling. This is a situation where loading of the elevator cabin changes makes the elevator steel rope extends. The worst situation for a high-rise building may have more than 10 mm shifting in the elevator cabin platform. Such an offset between the cabin platform and floor level can stumble passenger boarding or disembarking. In this proposed design, a linear position sensor detecting the position of landing zone vane is targeted to provide position sensing resolution up to 0.01 mm with maximum of 1mm error, using traditional infrared interrupter and new MEMS accelerometer. The device can help to improve motion control of the elevator with its high resolution and high accuracy to prevent position overshooting and steady state error. Kalman filter is employed to fusion the detected position and acceleration signal and outputting a clean and reliable position reading to the elevator motion control system.
Starting Page	366
Ending Page	370
File Size	549251
Page Count	5
File Format	PDF
e-ISBN	9781922107695
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-11-05
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Engineers Australia
Subject Keyword	Accelerometers Blades Interrupters Kalman filter Linear position sensor Elevators Re-leveling Micromechanical devices MEMS Accelerometer Elevator Detectors Kalman filters Infrared sensor
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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