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Sensing by piezoelectric braided cord has another significant feature. Because of its string-like shape, it is possible to make long sensors and realize switches that can be sewn on like buttons. This switch can be used to signal the activation of an operation. This invisible switch can magically initiate events without the user even feeling how it works.
Piezoelectric braids are used as string sensors and are woven into ribbons. The piezoelectric braid embedded in the ribbon detects when the ribbon is untied. It can be integrated with the ribbon without any discomfort. Timing events can be triggered arbitrarily by the user at the beginning, during, and after uniting of ribbon.
Present ribbon sewn with piezoelectric braided cord
Untied the present ribbon to activate the Christmas song on the smart phone.
It detects the uniting process of the ribbon, so it does not switch on during movement or impact. It is a magic switch.
