Abstract:
An electromagnetic induction heating and cooking tray being formed a recessed portion for accommodating an electromagnetic induction heating and cooking plate, is characterized in being provided with a tray main body being formed the recessed portion or a through hole configuring a portion of the recessed portion, a board-shaped, lineal, columnar and/or hollow-columnar first heat insulation member being molded and made of carbon fibers, aramid fibers and/or rock fiber, for supporting the plate; and feet being protruded from the bottom of the tray main body. Because the electromagnetic induction heating and cooking plate does not contact the tray main body as a result of being supported by the first heat insulation member and the heat of the plate is dissipated from the space formed by the feet, temperature increase of the tray and deterioration of the heat insulation member can be prevented even if the plate is heated. The tray can also be made lighter.
Abstract:
A collision position detection device comprises: a piezoelectric element that generates a voltage by collision; signal detector that detects a signal generated by the collision with the piezoelectric element; and processor that identifies the position of the collision with the piezoelectric element based on the signal detected by the signal detector. The piezoelectric element is a long piezoelectric element comprising a long piezoelectric body, conductors layered on both surfaces of the piezoelectric body, and a covering body that covers the peripheries of the conductors, wherein both of a leading end signal generated from a leading end of the long piezoelectric element and a back end signal generated from a back end of the long piezoelectric element can be detected to identify a collision position. The disposition of the collision position detection device in a windmill blade enables information about a bird colliding with the blade to be detected.