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Title: Study of human comfort under thermal and vibratory environment using physiological indices
Authors: Bhiwapurkar M.K.
Saran V.H.
Goel V.K.
Mansfield N.
Berg M.
Published in: Proceedings of 16th International Congress on Sound and Vibration 2009, ICSV 2009
Abstract: Besides the vibrations, passenger discomfort is influenced by various other factors such as, the environmental factors of noise, temperature, humidity and visual stimuli, etc. The discomfort can be measured both subjectively and objectively. Rammohan25 studied the influence of backrest support and handgrip contractions on acute metabolic, respiratory, and cardiovascular responses during exposure to whole-body vibration (WBV). In the present work, discomfort of passengers subjected to whole body random vibrations, environmental factors such as temperature, humidity and noise level variations by assessing their effect on various physiological parameters like, Pulse Rate, Respiration Rate, Galvanic Skin Response, Skin Temperature, Heart Rate, Heart Rate Variability and ECG values has been studied. The study was conducted on the three axes vibration simulator developed in the Laboratory, IIT Roorkee, India as a mock-up of a railway vehicle. The simulator room has a controlled temperature and humidity environment and its noise level can also be controlled. A BIOPAC system was used for data acquisition along with various modules for measuring physiological parameters. The mean and standard deviation of physiological parameters, possibly indicating the human comfort or discomforts for the 12 subject is found out. The design of experiment (ANOVA) was employed to quantify the relationships between measured responses and the input factors. The results show that some physiological parameters viz, pulse rate, SKT and HR show variation in vibration condition at 0.6 m/s2. It is also found that all the parameters affected by noise level and temperature show significant variation between no vibration condition and vibration condition.
Citation: Proceedings of 16th International Congress on Sound and Vibration 2009, ICSV 2009, (2009), 4376- 4383. Krakow
Issue Date: 2009
Keywords: Controlled temperature
Environmental factors
Galvanic skin response
Heart rate variability
Heart rates
Human comforts
Input factors
Noise levels
Passenger discomfort
Physiological indices
Physiological parameters
Pulse rate
Railway vehicles
Random vibrations
Respiration rate
Skin temperatures
Standard deviation
Three axes
Vibration condition
Visual stimulus
Whole body
Whole-body vibrations
Physiological models
ISBN: 9.78E+12
Author Scopus IDs: 36633921800
Author Affiliations: Bhiwapurkar, M.K., Indian Institute of Technology Roorkee, Roorkee, India
Saran, V.H., Indian Institute of Technology Roorkee, Roorkee, India
Goel, V.K., Indian Institute of Technology Roorkee, Roorkee, India
Mansfield, N., Loughborough University, Loughborough, United Kingdom
Berg, M., Royal Institute of Technology, Stockholm, Sweden
Corresponding Author: Bhiwapurkar, M.K.; Indian Institute of Technology Roorkee, Roorkee, India
Appears in Collections:Conference Publications [ME]

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