Hi, this is Wayne again with a topic “Wearable Temperature Sensors”.
When you’re working in extreme cold, you can’t always feel when your fingers and toes are getting too cold. So i designed a system that will monitor your body temperature and alerts you before you start to get frostbite to do this. I embedded temperature sensors inside a pair of gloves and boots and connected them to an arduino microcontroller. So the first thing you need to do is select a temperature sensor. I decided to use a tmp36 sensor.
This is an integrated circuit that outputs a signal voltage. That’S proportional to the temperature. I chose this sensor because it has a wide operating range. It doesn’t require calibration and it can be connected directly to the arduino without any external components. First, i soldered extension wires onto each lead of the sensor. I used header, pin connector cable so that i could easily connect and disconnect each sensor. Next, i mounted two of these sensors and a pair of gloves. This is easiest. If the gloves have a fabric lining on the inside, just cut a small hole in the lining, then feed in the sensor and the cable. Underneath any insulation try to position the sensors as close as possible to the end of the finger to mount a temperature sensor.
Inside a shoe, you can usually just fit it in place before sliding your foot. In now, you can connect the sensors to the arduino. The left pin connects to 5 volts. The right pin connects to ground and the center pin connects to an analog input.
Pin on the board, once the sensors are in place, you need to set up a way for the system to alert you. I decided to use earbud headphones because they can easily fit underneath any caps or earmuffs that you might be wearing to hook them up to the arduino. I connected a headphone socket to one of the pulse width modulation, pins using a 100k resistor, now download the arduino code and upload it to your board. The last thing that you need to do is find a small housing for the board. Try to find an insulated project enclosure, that’s just big enough for the arduino and its battery drill holes in one side for the headphone connector and the sensor wires then mount all the parts inside and close it up fit the controller into one of your pockets and Route, the wires between layers of clothing, now you’re ready to face the extreme weather. If your fingers or toes start to get too cold, the arduino will play a loud beep in the headphones.
This will let you know that you need to warm up quickly. Well, that’s how to make a wearable temperature sensor and alarm thanks for watching and check back next week for more diy hacks and how to’s .