A Design and Realization of Escalator Handrail Speed Tolerance Measurement Based on ARM Cotex-M4

Abstract:

Speed tolerance between handrail and the steps, pallets or belt of the escalator or moving walk is important to the passengers safety. This thesis proposes a novel design of ARM Cotex-M4 based double-channeled testing instrument for speed tolerance test which adopts two independent optical encoders to acquire the speed of handrail and the steps. The design handles parameter information obtained through two independent optical encoders by ARM Cotex-M4, then calculates and displays the result by LCD. The experiment shows that the measuring error and resolution ratio agree well with the standard. It can quickly detect the speed tolerance between handrail and the steps and the function of intelligent indication is convenient to the inspector. The field test shows that it can meet the requirements of test and the efficiency is also greatly improved.

• Periodical: Applied Mechanics and Materials (Volumes 530-531)
• Pages: 93-96
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.530-531.93
• Online since: February 2014
• Authors: Yue Lin Tang*
• Keywords: ARM Cortex-M4, Escalator, Inspection, Moving Walk, Speed Tolerance

References

[1] BS EN 115-1-2008+A1-2010 Safety of escalators and moving walks. Construction and installation.

DOI: 10.3403/30298808u

[2] General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. Safety rules for the construction and installation(GB 16899-2011). (In Chinese).

[3] General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China. TSG T7005-2012 Regulation for lift supervisory inspection and periodical inspection－Regulation for lift supervisory inspection and periodical inspection－Escalators and moving walks, 2012. (In Chinese).

DOI: 10.2753/clg0009-4609450112

[4] Fu jianlei. Measuring escalator braking distance and balustrades running deviation, China Elevator, 2008, 19(3). (In Chinese).

[5] Tong ning, Xu lin, Wan weixin. Design of an escalator brake safety detector, China Elevator, 2012, 10(23). (In Chinese).

[6] Portable measurement tool and method for escalators and moving walks[P], United States Patent 06112166.

[7] Wen Ming, Hong Yanji, Wang Junhua etc. Application of incremental revolving encoder in impulse measurement with compound pendulum, CHINESE JOURNAL OF SCIENTIFIC INSTRUMENT 2007, 28(1). (In Chinese).

[8] Liu Wenkui, Shi Jianling. The application of optical rotary encoder in angle measure, MODERN MANUFACTURING ENGINEERING. 2006, (11) . (In Chinese).

[9] Habibullah B, et al. A new digital speed transducer[J]. IEEE Transactions on Electronics Control Instrum, 1996, (25) : 339-342.

[10] Joseph Yiu. The Definitive Guide to ARM Cortex-M3 and Cortex-M4 Processors (3rd Revised edition), Newnes, 2013. 11.

DOI: 10.1016/b978-0-12-408082-9.00021-x