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Abstract

A video-synchronized electromyography (EMG) and metabolic data acquisition system is being developed to monitor human response to workplace conditions. This high-speed EMG data rate (1000 Samples/second/channel for 16 channels) plus metabolic data acquisition (20 seconds of refresh interval) is suitable for the combination of frequency-domain muscle fatigue and time-domain human stress studies associated with human activities. The system is composed of a video camera/recorder to record human activity images, and a personal computer to simultaneously acquire the EMG and the metabolic data (including oxygen consumption, carbon dioxide generation and heart rate) along with the video time-codes from the video recorder. The computer uses the time-codes recorded both on the video tape and in the data file to synchronize each video frame with the corresponding segment of the physiological data sequence. With the recorded time-codes, the computer is able to search a physiological data segment correspondent to any recorded video frame, and vice versa.

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References

Engström

Medbo

, “Data collection and analysis of manual work using video recording and personal computer techniques,” International Journal of Industrial Ergonomics, 19 (1997), pp. 291–298, 1997.

Gacía

, et al., “Characterization of near-bed coherent structures in turbulent open channel flow using synchronized high-speed video and hot-film measurements,” Experiments in Fluids, Vol. 19, pp. 16–28, 1995.

Gaskill

D.M.

, “Techniques for synchronizing thermal array chart recorders to video,” 28th International Telemetering Conference (Proceedings)-ITC/USA/92, Vol. 28, pp. 61–64, 1992.

Vannier

, et al., “Time and motion studies of medical imaging workstations,” SPIE, Vol. 1653, Image Capture, Formatting, and Display, pp. 274–280, 1992.

Yen

T.Y.

Radwin

R.G.

, “A video-based system for acquiring biomechanical data synchronized with arbitrary events and activities,” IEEE Transactions on Biomedical Engineering, Vol. 42, pp. 944–948, 1995.

Zeng

, et al., “16-channel 500-Hz video-synchronized EMG data acquisition,” Proceedings of the First Joint BMES/EMBS Conference, Atlanta, GA, Oct. 13–16, 1999, pp. 889, 1999.

Zeng

, et al., “A New Video-Synchronized Multi-Channel Biomedical Data Acquisition System,” IEEE Transactions on Biomedical Engineering, Vol. 47, No. 3, 2000 (in press).

A Video-Synchronized High-Speed-EMG and Metabolic Data Acquisition System

Abstract

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References