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Human body temperature sensor

balearicdynamics

Hello all!

 

I have a question, no idea if this is obvious or it is a complex one. I have to setup a temperature body measurement sensor, that will be based on the high precision with memory IC DS1624 (see attached datasheet).

The question is almost simple to explain: I need to find the way to convert this IC in a sensor. At the actual date I see a possible option but I am not sure if it is the best or there are other alternatives. The idea is explained below:

 

The probe itself includes the IC in a hosting container of the adequate characteristics; the idea is a good thermal transmission metallic end in contact in some way with the IC (maybe direct contact with the thermal conducting paste used for the CPU coolers?) So the entire probe has the cables reaching the processing device with a ground shielded cable of a length between 50 and 100 cm.

 

Some suggestion more reliable ?

 

Thanks in advance. Enrico

Attachments:
imageDS1624.pdf
Parents
  • 0

    it seems that I have found the right way for the solution.

     

    As a matter of fact it will be an integration between the direct-touch sensor actually used by many digital temperature probes, and a comfortable support for direct skin contact continuous temperature measurement. The possible repere points maybe ascillar and oral, plus direct skin contact, expecting different temperature ranges as shown in the image below.

    image

     

     

     

    The design idea is to use a copper terminal joined to the IC sensor put internally to the device and facilitating the thermal conduction with a thermal-conductive paste.

    The only issue I see is that copper is subject to oxidation, but it is one of the better tolerated metals by the human body and as shown in the table below, it has a very good thermal conductivity coefficient.

    image

    The alternative for the terminal supporting the IC is using acrylic plastic material that has also a good conductivity, but some experiments should be done,.

Reply
  • 0

    it seems that I have found the right way for the solution.

     

    As a matter of fact it will be an integration between the direct-touch sensor actually used by many digital temperature probes, and a comfortable support for direct skin contact continuous temperature measurement. The possible repere points maybe ascillar and oral, plus direct skin contact, expecting different temperature ranges as shown in the image below.

    image

     

     

     

    The design idea is to use a copper terminal joined to the IC sensor put internally to the device and facilitating the thermal conduction with a thermal-conductive paste.

    The only issue I see is that copper is subject to oxidation, but it is one of the better tolerated metals by the human body and as shown in the table below, it has a very good thermal conductivity coefficient.

    image

    The alternative for the terminal supporting the IC is using acrylic plastic material that has also a good conductivity, but some experiments should be done,.

Children