Other Parts Discussed in Thread: CC2642R
Dear TI-engineers,
For a new scientific study we would like to setup, we want to measure the wearing compliance of patients with an elbow brace.
In literature this is either done by means of measuring the skin temperature within a specific threshold between 28 and 32 degrees Celsius, by means of measuring a minimum amount of force applied to a force sensor or a combination of both. We have found a scientific article for reference in which the wearing compliance is measured using both a force sensor and a temperature sensor using a TI CC2530F256 system-on-chip system, a force meter and a battery. Please see the following link for reference: https://www.sciencedirect.com/science/article/pii/S1350453315000090?via%3Dihub#bib0024
For our scientific study, we would like make a similar set-up in which the force is measured by a low-cost thin film force sensor (e.g. something similar to this link). The data is logged and stored on a similar chip as the CC2530, powered by a small connected battery. It would be ideal, to be also able to measure wearing time by means of temperature, integrated in the same chip. The data in the reference article is read out via an IEEE transmitter. However, if possible, we would to like to read it out via Bluetooth on a laptop.
So in short, for our setup we would have the following requirements:
- A low-cost thin film force sensor
- A data logging and storing chip (Texas Instruments), ideally with an integrated temperature sensor. Programmable and readable using a Bluetooth connection. The measuring frequency would be once every 5 minutes during a 3 month time period
- A small battery powering the setup being able to power the setup for at least 3 months
I hope you could answer the following questions for me:
- We could acquire the thin film force sensor and battery ourselves. However, we need to make sure it fits the chip. Would the sensor similar to this example link have the right connection or would we need a different kind of connection?
- Same question regarding the battery. Using a TI-chip, what would the specifications of the battery be, provided to have enough energy to power the setup for a little over 3 months?
- The sensor needs to be programmable and readable using Bluetooth. Would a chip like the CC2642R be a good alternative? Would it also be possible to program the chip using a laptop Bluetooth connection or would we need a specific Bluetooth dongle to program and readout the data?
I hope I have stated our setup and questions clear enough for you to help me. If there still are things unclear or if you need further information regarding the setup we would like to make, please feel free to post your questions below.
Kind regards,
dr. M.F. Siemensma, MD
Department of Orthopaedics and Sports Medicine
Erasmus University Medical Center, Rotterdam, The Netherlands
