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Technical note: a compact data logger for ambulatory skin temperature measurement.

M P Bolton1, K McGuinness, J Cooley

  • 1Clinical Engineering (Northwestern Medical Physics), Withington Hospital Manchester, UK. bolton@fs1.with.man.ac.uk

Journal of Medical Engineering & Technology
|January 10, 2002
PubMed
Summary

A new miniature, body-worn data logger accurately records subtle skin temperature changes. This wearable device offers long battery life and contactless data transfer for research applications.

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Area of Science:

  • Biomedical Engineering
  • Physiological Monitoring

Background:

  • Accurate, long-term skin temperature monitoring is crucial for various physiological studies.
  • Existing methods may be cumbersome or lack the required precision and portability.

Purpose of the Study:

  • To develop a miniature, body-worn data logger for high-accuracy, multi-channel skin surface temperature recording.
  • To enable a portable, programmable solution with contactless data transfer.

Main Methods:

  • Development of a compact, body-worn data logger utilizing thermistors for temperature measurement.
  • Implementation of a software package for logger programming, data download, and display via laptop PC.
  • System designed for eight-channel recording with programmable intervals (30 seconds to 99 minutes) and 64 KB non-volatile memory.

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Main Results:

  • The data logger achieves a temperature resolution of 0.005°C and absolute accuracy better than 0.05°C.
  • The device measures 55 mm x 31 mm x 9.5 mm and weighs 20 g, featuring long battery life.
  • The system can store 3274 sets of readings, including subject identification, battery status, date, and time.

Conclusions:

  • A highly accurate, miniature, and portable body-worn data logger for skin temperature monitoring has been successfully developed.
  • The device's features, including contactless data transfer and comprehensive software, facilitate efficient physiological data collection.
  • This technology offers a valuable tool for research requiring precise, long-term skin temperature measurements.