Method for manufacturing a device for locating an impact having at least three transducers attached against an interactive surface

A method for manufacturing a device for locating an impact comprising:

• an interactive surface having a front face for receiving an impact, and
• at least three transducers, that need to be distributed and attached against the front face or a rear face of the interactive surface, designed to capture progressive mechanical waves propagating in the interactive surface from the impact and transform them into electrical signals,
• with the method for manufacturing comprising the following steps:
• determining a central positioning point for each transducer on the front face or rear face of the interactive surface,
• attaching each transducer around the central positioning point of same, with each transducer having a lower conductive layer forming a first electrode through which it is attached against the front face or the rear face of the interactive surface, a piezoelectric intermediate layer and a free upper conductive layer intended to form a second electrode,
• characterized in that it further comprises following the attaching of each transducer, a step of machining the free upper conductive layer of at least one of the transducers using a machine tool at least as far as the piezoelectric intermediate layer of this transducer in order to form the second electrode of this transducer by centering the second electrode around the central positioning point of same as a portion of the free upper conductive layer arranged in the free upper conductive layer.