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The individual study of 

Peter

Human temperature sensing

What is the best way to integrate the temperature sensor into the blanket?

烤箱溫度
烤箱溫度

Criteria

  1. Comfort ​

  2. Accuracy

  3. Size​

  4. Cost​

  5. Ease of integration​

  6. Contact/Non contact

  7. Power consumption​

Experiment

I attach the RTD sensor to my chest while I am sleeping(with a blanket). The RTD sensor would respond every 10 minutes. The average temperature over the night is 34 degrees.

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Conclusion from the experiment

  1. The range of temperature fluctuate is small (around 1.5 degree)

  2. Apparent temperature is different from the temperature sensed by RTD (I just feel like it was 30 degrees)

  3. I felt not comfortable when I sleep with a RTD sensor. 

Problems encountered while integrating sensors with blanket and solutions

  1. Some sensors can't measure temperature while you're moving around in your sleep because they can't attach properly to certain body parts and causing discomfort.

    1. Using non-contact sensor (IR sensor)​

    2. Need multiple IR sensors to ensure the accuracy

  2. Measured temperature is not equal to apparent temperature(User feeling) Humidity and wind speed would affect how user feel.​

    1. Combine temperature sensors with other sensors e.g Humidity/Airflow sensors​

    2. Using a multi-function sensor ( such as BME280)​

    3. Use breathable, moisture wicking fabrics to reduce humidity buildup

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Future design

ISDN2001/2002: Second Year Design Project

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