MetaSkin is a technology that is based on the amount of Infrared light which is being reflected by stretchable cloth. With the technology used in MetaSkin we want to develop a way to improve the posture of people during sitting for example. When a person sits straight with the shoulders turned backwards and the breast to the front the cloth on the back of the person just underneath the shoulder blades won’t be stretched. If the person sits crooked or slumped the cloth on the back of the person will be stretched. This difference should evoke a buzzer, sound or vibration to give feedback to the user about his or her posture.
Link to video-https://www.youtube.com/watch?v=-2Lryl2kwdc
Step 1: How Does It Work?
A Reflective sensor which contains a emitter and a receiver part is placed against the cloth. When the cloth is not stretched, a lot of IR light which is sent by the emitter is received again by the receiver. When the cloth is stretched there is less material in front of the sensor which means that less IR light will be reflected by the cloth and received by the receiver. In our product this difference will be used to give warnings to the user. This difference should evoke a buzzer, sound or vibration to give feedback to the user about his or her posture.
Step 2: Do You Crook or Slump While Working on Computer a Lot?
Did you know that experts estimate that as many as 80% of the population will experience a back problem at some time in our lives (American Chiropractic Association, 2015). Most of the people are aware of this but are not able to take action while working.
Step 3: What If You Have a Persuasive Trigger to Improve Your Posture?
Step 4: Materials Required
- Jumper wires
- Long wires
- IR sensor (emitter and receiver)
- Resistor (10k)
- Sensor mount
Step 5: Make the Connections
Step 6: Glue the Sensor on Clothing
Make sure the sensor is not glued and fabric is able to stretch under the sensor. Glue the sensor mount or the wires to the fabric
Step 7: Upload the Code to the Arduino Board
Please find attached the code in the pdf attached.
Step 8: Check and Adjust the 'posture' Threshold
Move your posture from straight to bending position and check the change of values of 'posture' in seek monitor (accessible from magnifying icon on top right corner of Arduino interface). Change the value in the code to the lowest average value you see when you are sitting in bending position.
Step 9: Future Possibilities
You can make it wireless and use flexible sensors to make it less clumsy.
Renate Hulst and Vinay Bhajantri