Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-07-01

Journal: SENSORS

Included Journals: PubMed、EI、SCIE

Volume: 16

Issue: 7

ISSN: 1424-8220

Key Words: cyber-physical systems; offshore hoisting monitoring; smartphone sensors; accelerometer; gyroscope

Abstract: Offshore design and construction is much more difficult than land-based design and construction, particularly due to hoisting operations. Real-time monitoring of the orientation and movement of a hoisted structure is thus required for operators' safety. In recent years, rapid development of the smart-phone commercial market has offered the possibility that everyone can carry a mini personal computer that is integrated with sensors, an operating system and communication system that can act as an effective aid for cyber-physical systems (CPS) research. In this paper, a CPS for hoisting monitoring using smartphones was proposed, including a phone collector, a controller and a server. This system uses smartphones equipped with internal sensors to obtain girder movement information, which will be uploaded to a server, then returned to controller users. An alarming system will be provided on the controller phone once the returned data exceeds a threshold. The proposed monitoring system is used to monitor the movement and orientation of a girder during hoisting on a cross-sea bridge in real time. The results show the convenience and feasibility of the proposed system.