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Touch, or tactile sensing, is fundamentally important for a range of real-life applications, from robotics to surgical medicine to sports science. Tactile sensors are modeled on the biological sense of touch and can help researchers to understand human perception and motion. Researchers from Osaka University have now developed a new approach to pressure distribution measurement using tactile imaging technology.
Pressure is one of the primary characteristics of touch, and tactile imaging can be used to measure pressure or stress distributions across an object of interest. The most common current approach to tactile imaging involves use of an array of sensors composed of pressure-sensitive materials. However, such arrays require complex fabrication processes and place limitations on the sensor design, hence the necessity of a new method, now outlined in an article in IEEE Transactions on Industrial Electronics.
Pressure - Conductors - Contact - Resistance - States
"The pressure between two conductors is directly related to the electrical contact resistance between them," states Osaka University's Osamu Oshiro. "We used this relationship to develop a sensor composed of a pair of electromechanically coupled conductors, where one conductor had a driving function and the other performed the probe function. This sensor has no need for pressure-sensitive materials and is simpler to manufacture."
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