摘要:
A viscoelastic body is interposed between a vibrating membrane vibrating in association with a piezoelectric vibrator composed of a piezoelectric element and a base and a support member supporting the vibrating membrane. The viscoelastic body attenuates vibration transmitted from the support member to the vibrating membrane and converts vibration of the vibrating membrane in the surface direction parallel to its main surfaces to vibration of the vibrating membrane in the direction nearly perpendicular to the surface direction. The vibrating membrane is annular with an opening at the center, and the base is joined to the vibrating membrane coaxially with opening.
摘要:
A biological information detection sensor is provided by which it is possible to integrate multiple detection means, and it is possible to measure the biological information that is necessary in accordance with the usage state of the sensor used by the user while avoiding redundant information. The biological information detection sensor includes: a skin condition detection portion measuring at least one of a capacitance and an electric resistance change between engaged comb electrodes; a smell component detection portion measuring an electric resistance in accordance with objects absorbed on a selective sensitive membrane which is formed on a portion of the engaged comb electrodes; a temperature detection portion measuring an ambient temperature based on an electromotive force generated by a thermocouple which is formed by using at least two kinds of metallic materials and which is formed on a portion of the engaged comb electrodes; a switching means SW which compares the electromotive force generated by the thermocouple due to changes of the ambient temperature to a predetermined threshold, detects a contact state with an object having a heat source such as a biological body based on a comparison result and conducts switching operation of ON and OFF of the skin condition detection portion and the smell component detection portion based on the contact state.
摘要:
A breakdown prediction device of the present invention includes: a vibration measurement unit that measures vibrations generated from a device being monitored; and a signal processing unit that performs breakdown prediction when a specific vibration is measured at the vibration measurement unit, a maximum vibration amplitude value of the vibration exceeding an upper limit vibration amplitude threshold, and a vibration amplitude value thereof being below a lower limit vibration amplitude threshold at a point in time when a specified time is reached from a point in time when the vibration exceeds the upper limit vibration amplitude threshold.
摘要:
A breakdown prediction device of the present invention includes: a vibration measurement unit that measures vibrations generated from a device being monitored; and a signal processing unit that performs breakdown prediction when a specific vibration is measured at the vibration measurement unit, a maximum vibration amplitude value of the vibration exceeding an upper limit vibration amplitude threshold, and a vibration amplitude value thereof being below a lower limit vibration amplitude threshold at a point in time when a specified time is reached from a point in time when the vibration exceeds the upper limit vibration amplitude threshold.
摘要:
A structure for attaching a vibration sensor to a storage device having a recording or reproducing head that records on or reproduces from a recording medium, includes: a first vibration sensor which is provided on a first outer surface of a base of the storage device, and detects vibration in a direction perpendicular to a surface of the recording medium; a second vibration sensor which is provided on a second outer surface of the base, the second surface orthogonal to the first outer surface, and detects vibration in an in-plane direction of the recording medium; an urging section which has a first end portion in contact with an upper surface of the first vibration sensor and a second end portion in contact with an upper surface of the second vibration sensor, and has a substantially L-shape; and a damping member affixed to the urging section.
摘要:
A structure for attaching a vibration sensor to a storage device having a recording or reproducing head that records on or reproduces from a recording medium, includes: a first vibration sensor which is provided on a first outer surface of a base of the storage device, and detects vibration in a direction perpendicular to a surface of the recording medium; a second vibration sensor which is provided on a second outer surface of the base, the second surface orthogonal to the first outer surface, and detects vibration in an in-plane direction of the recording medium; an urging section which has a first end portion in contact with an upper surface of the first vibration sensor and a second end portion in contact with an upper surface of the second vibration sensor, and has a substantially L-shape; and a damping member affixed to the urging section.
摘要:
The present invention is to provide a connector seal allowing an accurate inspection of presence of an incorrectly formed bore in a terminal insertion bore of the connector seal. A connector seal includes a seal main body and a plurality of terminal insertion bores. Each terminal insertion bore has an upper membrane potion and a lower membrane portion, which are spaced one another and interconnected together with a lamella. Preferably, the terminal insertion bore has a membrane, which includes a substantially curved groove and a substantially curved lamella. Preferably, the terminal insertion bore has a membrane which includes a lamella, the lamella being oriented in a direction coincident with a diagonal line of a rectangular cross-section of a terminal so that corners of the terminal hit opposite ends of the lamella.
摘要:
A piezoelectric acoustic element 1 of the present invention comprising a hollow casing 5 having a opening 3, a piezoelectric element 7 that is disposed in said casing 5 and bends when a voltage is applied thereto, and diaphragm 8 provided at the opening 3 of said casing 5; wherein said piezoelectric element 7 and said diaphragm 8 are joined through a vibration transmitting member 9.
摘要:
A through-panel connector, comprising a female connector (10) and a male connector disposed on one side and the other side of panel (50) and fitted to each other through a mounting hole (51) formed in the panel (50). The female connector (10) comprises a plurality of flexible holding ribs (11). The holding ribs (11) are formed on the outer peripheral surface (32) of the female connector (10) opposed to the mounting hole inner peripheral surface (53) of the panel (50) so as to be extended along the inserting direction of the mounting hole (51) and separated from the outer peripheral surface (32) while being extended from the base end part (12) to the tip part (13) of the female connector (10) along the mounting hole inner peripheral surface (53). The holding ribs (11) are biased and held on the mounting hole inner peripheral surface (53) with the female connector (10) fitted to the panel (50).
摘要:
A piezoelectric element of the piezoelectric pump is driven by the output signal of an amplifier that takes as input a signal that is generated by a sine wave oscillator of the same frequency that drives the piezoelectric element. The amplifier is driven by a high voltage obtained by conversion from a low-voltage power supply by a voltage-boosting converter, whereby the piezoelectric element is driven by a low-frequency sine wave of high voltage. The frequency of the sine wave oscillation is further adjusted by a signal from a first control circuit at the time of activation. In addition, the amplitude of the sine wave oscillation is adjusted by the output signal of a second control circuit that takes as input a signal from temperature sensor for sensing the temperature of the heat-generating body.