FAQs Wearable Sensors

1. What are Stretch Sensors?

Stretch sensors are soft pieces of elastic material that transmit information about how much they are being stretched. This is useful when you want to measure deformation of the human body.

2. How does a stretch sensor work?

Our stretch sensors are elastic capacitors made of a laminated polymer structure. The capacitance of the structure changes when the sensor is stretched, we measure this change and relate it to deformation.

3. What makes StretchSense special?

Polymeric stretchy capacitors have a number of non-ideal characteristics and problems. The electrodes have an unpredictable resistance, capacitances are small and susceptible to parasitic effects, and there is a complex electromechanical impedance matching problem at the connections. StretchSense has solved these problems to provide you with precise high quality stretch sensors.

4. What are stretch sensors good for?

Stretch sensors are good at measuring human body motion for:

  • Animation / motion capture and gaming
  • Interacting with portable electronic / augmented reality devices
  • Health and rehabilitation
  • Sports training
5. What if the basic sensor is not suitable for me?

StretchSense sells evaluation kits in a form factor suitable for general experimentation. These are not optimised for any given application. If you need changes made to the basic sensor please get in touch. We can supply different sizes, sensitivities, stiffness's, interfaces, geometries, speeds, environmental tolerances and more. Check out a full list of our services or contact us directly about your specific requirements.

6. How are stretch sensors different from resistive sensors?

Our stretch sensors are based on capacitive sensing which means that they provide very stable and repeatable data when stretched. Sensors based on resistive principles often suffer from drift and rate dependent effects.