Recognizing construction worker activities based on accelerometers

doi:10.16511/j.cnki.qhdxxb.2017.25.055

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Abstract Automatic recognition of construction worker activities is key to real-time management of construction quality, safety and efficiency. An effective system requires the integration of many areas such as construction, information and management. Taking steel benders as an example, acceleration data from the wrists of steel benders was collected using accelerometers during the construction process. All activities were divided into three categories. The features were extracted from the acceleration data. Then classifiers were used to conduct machine learning with different features. The accuracies of different classifiers were compared to find the best classifiers and features. Tests demonstrate that the best features are related to the data segment length. Within a certain range, longer data segments give better recognition accuracy. This method gives more detailed classifications of the steel benders' activities with a recognition accuracy rate of 85.9% that is higher than previous methods. It provides a method for recognition of typical worker activities on site, and establishes a foundation for automated, real-time monitoring of construction workers to improve the quality, safety and efficiency of construction management.

Keywords accelerometer steel bender machine learning activity recognition

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Issue Date: 15 December 2017

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	QIANG Maoshan
	ZHANG Dongcheng
	JIANG Hanchen

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QIANG Maoshan,ZHANG Dongcheng,JIANG Hanchen. Recognizing construction worker activities based on accelerometers[J]. Journal of Tsinghua University(Science and Technology), 2017, 57(12): 1338-1344.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2017.25.055 OR http://jst.tsinghuajournals.com/EN/Y2017/V57/I12/1338

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