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Capacitive silicone force sensor

Andreas Mühlbauer,

The intelligent electronic skin

With its subsidiary Sateco XT, Sateco is breaking new ground and expanding its portfolio of established safety mat systems with the SXTSC silicone force sensor.

The silicone force sensor SXTSC. © Sateco

The elastomer sensor works according to the capacitive operating principle and can continuously measure both touch and pressure force. It is soft and flexible, can be shaped three-dimensionally and is suitable for a wide range of applications such as automotive, VR, AR, gaming, robotics, medical technology and general industry.

Both the base area and the dimensions of the sensor can be freely designed. This means that it can be adapted to curved surfaces as required and seamlessly integrated between the carrier material and the surface. This enables the ergonomic design of input devices, prostheses and exoskeletons on both small and large surfaces.

The sensor combines two measuring functions in one component. It can detect the approach of a body part at a short distance and also precisely measure the force applied to it. This keeps the combination compact and enables predictive operating and measuring systems.

Silicone is pleasant on the skin. The wearing comfort can be further increased by optionally texturing the surface. With regard to food, silicone is resistant to chemicals and temperature. As a measuring cell with electrical connections, the sensor can be integrated directly into the surface outside of a circuit board with little effort. Its elastomer material eliminates the need for additional elements for mechanical damping, preload and tolerance compensation. This simplifies the design and reduces manufacturing costs.

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Thanks to the elastomer material, the SXTSC is robust, shock and impact resistant and guarantees a long service life even in harsh environments at high (+85 °C) and low temperatures (-40 °C). Samples including evaluation electronics are available in a starter kit and enable a quick and uncomplicated start to the new technology.

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