Ultrasonic touch sensor used for detecting clamping force

The invention discloses an ultrasonic touch sensor used for detecting a clamping force, which comprises an ultrasonic detector and a sensing layer, wherein the sensing layer comprises a first soft layer and a second soft layer, and a plurality of spherical microstructures contacted with the ultrasonic detector are arranged at the first soft layer. According to the invention, the ultrasonic detector generates an ultrasonic wave and receives a reflected wave signal when pressure is applied to the sensing layer, the contact area of the spherical microstructures is identified through the signal, and the stress received by the touch sensor is reversely deduced. 本发明公开了种用于侦测夹持力的超声波触觉传感器，其包含超声波侦测器及感测层，该感测层包含第柔软层及第二柔软层，且于第柔软层排列有多个接触于超声波侦测器的球形微结构，藉此，于感测层施加压力后，通过超声波侦测器产生超声波并接收反射波信号，以通过该信号辨识球形微结构的接触面积并反推触觉传感器的受力大小。