[논문]Development of a Musculoskeletal Load Measuring Device for Construction Workers Based on Accelerometers and Gyro Sensors

Kim, Kyoon-Tai

doi:10.5345/jkibc.2011.11.6.618

Development of a Musculoskeletal Load Measuring Device for Construction Workers Based on Accelerometers and Gyro Sensors 원문보기

한국건축시공학회지 = Journal of the Korea Institute of Building Construction, v.11 no.6 = no.50, 2011년, pp.618 - 626

Kim, Kyoon-Tai (Construction Management & Economy Research Div., Korea Institute of Construction Technology)

Abstract ▼ AI-Helper

The characteristics of construction work cause excessive strain on specific body parts of the construction craft workers. However, there are few tools to mane an accurate measurement of the load on the musculoskeletal system, and the musculoskeletal disorders (MSDs) experienced by the workers have not been properly understood. So, there is an urgent need for development of a tool to measure the load on the musculoskeletal system. Therefore, this research aims to develop a musculoskeletal load measuring device for construction workers. In order to eliminate the noise and errors, an accelerometer, gyro sensors and the Kalman Filter are used in the device developed in this research.

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문제 정의

Hence, the objective of this research is to develop a more accurate musculoskeletal load measuring device by improving the accelerometer‐based measuring device. This research is ultimately expected to improve the working posture and working efficiency of the construction workers.

제안 방법

For this research, it is necessary to measure the motion from torso to shoulder and to wrist. A sensor is attached to each of torso, upper arm, radius/ulnar and dorsum of hand.
The research trend in relation with the musculoskeletal load measurement is first discussed, and the limits to the conventional musculoskeletal load measuring system are analyzed. Next, the 3D coordinate transformation and the errors generated from the 3D linear coordinate system are studied, and a plan is sought to minimize such errors. Finally, the sensors are selected for building the device, and the validity of the system is verified.
As shown in Figure 1, the body parts at which the load was measured are specified as wrist, elbow and shoulder. The concept of a load measuring system was derived to measure the quantity of motion at torso, upper arm, ulnar/radius and dorsum of hand with devices attached to the body parts. An accelerometer‐based measuring system was developed, and its applicability was also tested[1, 7, 10].
The purpose of the basic motion experiment is to verify whether the values are correctly input to the linked sensors when each sensor is connected. As shown in Figure 10, with the sensors attached to the arm and shoulder, the subject moves the arm in every direction with the arm spread to verify that the data values are being correctly delivered by the sensors.
One of the reasons for this lack of understanding is the fact that there is no measuring tool appropriate for the construction site and work types. Therefore, a musculoskeletal load measuring system for workers by applying an accelerometer, a gyroscope sensor and the Kalman filter is developed in this study.
To develop the sensor‐based measuring device for this research, several steps were required, including circuit design and safety verification. For this reason, with the aim of reducing the development cost, securing the safety of the circuit, easing the verification of the measured values and reducing the development period, we decided to select a domestic company that produces sensor modules equipped with an accelerometer and a gyroscope sensor.

후속연구

In addition, the system is only for the body parts from the shoulder to the wrist. Further study is needed to expand the applicability of the system to other body parts.
If the system is improved through further research and a more finite verification of the system, it is expected that the improved system can be applied to future research and evaluation for construction workers of postures and positions with an increased risk of MSDs. In this way, it will contribute to the preparation of a plan to correct the workers’ position and reduce the incidence of industrial accidents.
Hence, the objective of this research is to develop a more accurate musculoskeletal load measuring device by improving the accelerometer‐based measuring device. This research is ultimately expected to improve the working posture and working efficiency of the construction workers.

참고문헌 (11)

Cho CY, Kim KT, Kim CH, Lee JB. An Analysis of Construction Worker's Motion for Design of Workload Measuring Instrument. Proceedings of the Korea Institute of Construction Engineering and Management; 2010 Nov 5-6; Incheon, Korea. Seoul (Korea): Korea Institute of Construction Engineering and Management; 2010. p. 125-6.
Colombini D. An observational method for classifying exposure to repetitive movements of the upper limbs. Ergonomics. 1998 Sep;41(9):1261-89.

상세보기
Lee JB, Cho CY. A study on workload evaluation of hand-intensive tasks of carpenters and structural steel works. Korean Journal of Construction Engineering and Management. 2007 Jun;8(3):134-41.
Holmstom E. Musculoskeletal disorders in relation to age and ocupation in Swedish construction workers. American Journal of Industrial Medicine. 2003 Oct;44(4):377-84.

상세보기
Peterson SJ. Comparison of health outcomes among older construction and blue-collar Employees in the United States. American Journal of Industrial Medicine. 1998 Sep;34(3):280-87.

상세보기
Min SN. Comparison of various postural analysis results for construction workers performing manual material handing jobs [master's these]. Seoul (Korea): Hanyang University; 2005. 88 p.
Kim KT, Kim CH. Development of a method to measure musculoskeletal load for construction workers. Proceedings of the Korea Institute of Building Construction(Industry); 2011 May 20; Busan, Korea: Seoul (Korea): Korea Institute of Building Construction; 2011. p. 75-7.
Chung YG. The realities of work-related musculoskeletal disorders of construction employees and the related factors [master's these]. Daegu (Korea): Daegu Haany University; 2004. 54 p.
Lee YG, Park HS, Lim SH, Yoon GW, Park JG, Her SM, Yoon DG, Woo JH, Kang JJ, Park EJ, Ok DM. Symptoms and characteristics of the risk factors of the musculoskeletal disorders in construction workers. Incheon(Korea): Occupational Safety and Health Research Institute (OSHRI). 2009. 262 p. Report No.: 2009-66-1253.
Kim KT, Kim CH. Development of a Measuring Device for Construction Field Worker's Work Load Using Accelerometers. Proceedings of International Symposium on Automation and Robotics in Construction 2011(part1); 2011 Jun 29-Jul 2; Seoul, Korea: Eindhoven (Netherlands): International Association for Automation and Robotics in Construction; 2011. p. 643-4.
Kalman Filter[Internet]. Seoul (Korea): Daum Communications. 1995- [cited 2011 Sept 19]. Available from: http://k.daum.net/qna/openknowledge/view.html?category_idQJ&qid0FNFo&q%C4%AE%B8%B8%C7%CA%C5%CD

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Development of a Musculoskeletal Load Measuring Device for Construction Workers Based on Accelerometers and Gyro Sensors 원문보기

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Development of a Musculoskeletal Load Measuring Device for Construction Workers Based on Accelerometers and Gyro Sensors 원문보기

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