Other Parts Discussed in Thread: LMT70, TMP117
Hi Team
We are making a wearable band withing the range of +-0.1 degree centigrade to measure body temperature by sensing temperature on wrist.
1) Does TI has any design for same/ Similar application?
2) Please suggest which part we should proceed as we have to make very cheap band
3) We are thinking of mounting a metal part/ thick pogo pin on bottom side PCB in such a manner that it come out of mechanical surface and tough skin. Do you have any suggestion for such part ? Does TI used any such part off the shelf part in there internal testing while making probe of any wearable heart rate monitor/ECG, if so please suggest part no
4) while going through http://www.ti.com/lit/an/snia021b/snia021b.pdf on page no 4 it is mentioned that "Better results can be obtained if underfill material is added surrounding the LMT70 die (package) as shown in Figure 4." Can you please tell any example of material which can be used ?
5) We have one concern that suppose user didn't tied his wearable we may not able to measure temp properly . Do you have any suggestion how we can give notification that probe not properly touching hand ?
we are thinking of proximity sensor( not sure about sensitivity) and SPO2 sensor (disadvantage is high current consumption and cost ).
6) How sweat under the probe can impact temperature measurement. Consider use case person is in 40 degree ambient and we need to measure temperature every 30 min.