Abstract: A load detection device includes a piezoelectric body unit adapted to be deformed by receiving an electric voltage, the piezoelectric body unit generating an electric charge by receiving an external load, a drive portion applying the electric voltage to the piezoelectric body unit for vibrating thereof, a detection portion detecting the electric charge generated at the piezoelectric body unit, and an adjusting member adjusting a pressure applied to at least one pressure sensing surface provided at the piezoelectric body unit to restrain the vibration of the piezoelectric body unit.

Abstract: A load detecting device includes a sensor element including a function for generating and detecting a vibration within a single element, the sensor element converting a load or an acceleration into a detection signal, a driving portion for outputting a driving signal for vibrating the sensor element, a vibration detecting portion for extracting the detection signal from the sensor element and for detecting a vibration characteristic value of the sensor element, a wiring for electrically connecting the sensor element, the driving portion and the vibration detecting portion to one another, and for transmitting a superimposed signal constituted by superposition of the driving signal from the driving portion and the detection signal from the sensor element, and a calculating portion for calculating one of or both of a load and an acceleration applied to the sensor element based on the vibration characteristic value from the vibration detecting portion.

Abstract: A biosignal intensity distribution measuring apparatus, includes a supporting member for supporting a human body, a plurality of detecting portions arranged in two dimensions within a target detection area of the supporting member, the detecting portions detecting pressure fluctuations and outputting signals corresponding to the pressure fluctuations respectively, a filter extracting a biosignal having a predetermined frequency band based from the signal outputted from each of the detecting portions, an intensity calculating portion calculating an intensity value of the biosignal, and an intensity distribution producing portion producing intensity distribution in which the intensity value corresponds to a position of the detecting portion.

Abstract: A biological information pressure sensor having a planer shape disposed on an elastic support element for supporting a human body, for detecting an external force due to one or both of a load variation caused by the human body and vibration generated by the human body. The sensor includes a sensing portion having sensitivity with respect to the external force, wherein the sensing portion is configured by using a piezoelectric material, and is configured to have flexibility and anisotropy.

Abstract: A load detecting device includes a sensor element including a function for generating and detecting a vibration within a single element, the sensor element converting a load or an acceleration into a detection signal, a driving portion for outputting a driving signal for vibrating the sensor element, a vibration detecting portion for extracting the detection signal from the sensor element and for detecting a vibration characteristic value of the sensor element, a wiring for electrically connecting the sensor element, the driving portion and the vibration detecting portion to one another, and for transmitting a superimposed signal constituted by superposition of the driving signal from the driving portion and the detection signal from the sensor element, and a calculating portion for calculating one of or both of a load and an acceleration applied to the sensor element based on the vibration characteristic value from the vibration detecting portion.