String Plucking and Touching Sensing using Transmissive Optical Sensors for Guzheng

The article presents a solution for recording individual vibrations of the string for the guzheng zither. An optical transmission sensor was used inside which the string vibrates. The analytical solution is presented to describe the string in this type of sensor. The classification of sensors is proposed, which classes are characterized by different properties of vibration conversion into an optical signal. A prototype solution for guzheng is presented. The measuring method allows to register the touch of the string, which is important for further estimation of the string's state.