Validity of contact skin temperature sensors under different environmental conditions with and without fabric coverage: characterisation and correction
| Autor: | René M. Rossi, Simon Annaheim, Rolf Stämpfli, Braid A. MacRae, Christina M. Spengler |
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| Rok vydání: | 2018 |
| Předmět: |
Atmospheric Science
Materials science 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis 01 natural sciences Temperature measurement Body Temperature 03 medical and health sciences Wearable Electronic Devices 0302 clinical medicine Thermal Calibration Range (statistics) Humans 0105 earth and related environmental sciences Observational error Ecology Thermistor Temperature Skin temperature Mechanics Microclimate Temperature gradient Skin Temperature 030217 neurology & neurosurgery |
| Zdroj: | International journal of biometeorology. 62(10) |
| ISSN: | 1432-1254 |
| Popis: | Contact skin temperature (Tsk) sensors are calibrated under uniform thermal conditions but used in the presence of a skin-to-environment temperature gradient. We aimed to characterise the validity of contact Tsk sensors when measuring surface temperature under a range of environmental and fabric coverage conditions, to estimate practical temperature limits for a given measurement bias and to explore correcting for bias. Using two types of contact Tsk sensors (thermistors, n = 5; iButtons, n = 5), we performed experiments in three phases: (1) conventional calibration (uniform thermal environment) over 15–40 °C in 5 °C steps (at t = 0, and 24 h, 12 weeks later), (2) surface temperature measurements of a purpose-made aluminium plate (also 15–40 °C) at different environmental temperatures (15, 25, 35 °C) with different sensor attachments and fabric coverings to assess measurement bias and calculate correction factors that account for the next-to-surface microclimate temperature and (3) surface measurements (33.1 °C in 20 °C environment) for assessing generated corrections. The main results were as follows: (1) after initial calibration, Tsk sensors were valid under uniform thermal conditions [mean bias |
| Databáze: | OpenAIRE |
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