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Vol. 174, Issue 7, July 2014, pp. 109-114

 

Bullet

 

Design of a WSN-Based Monitoring System for Avoiding Collision of Tower Cranes
 

Jiannong Wang

Changzhou Institute of Technology, Changzhou, Jiangsu, 213002, China
Tel.: +86-0519-85567950

E-mail: wangjn@czu.cn

 

Received: 20 April 2014 /Accepted: 30 June 2014 /Published: 31 July 2014

Digital Sensors and Sensor Sysstems

 

Abstract: Tower cranes in large construction projects are likely to collide with other cranes close to them during the operation, which is a severe hazard to the security of the staff. Thus, a WSN- based monitoring system for avoiding collision of tower cranes is proposed. The 3D data positioning technology is used to install angle and position sensors at intervals in the cranes in order to collect position data in real time. After the data are sent to the upper computer, the computer calculates the distance using the 3D positioning technique and sets a proper threshold for alarm. When the measured distance is smaller than the threshold, the alarm is set off to prevent collision. In the experiment, three pairs of cranes 15-22 m in height that are located separately are tested in terms of errors in data collection and in alarms. The experimental results show that the proposed system has an alarm accuracy of 99.3 %, and thus, is highly applicable.

 

Keywords: WSN, Collision avoidance of cranes, 3D positioning, ZigBee, Node.

 

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