Abstract: The objective of the present invention is to remove drift of a piezoelectric element and thereby obtain a highly precise pressure detection signal by means of a simple configuration. A pressure detection signal processing device 200 includes: a charge amplifier 210 that accumulates electric charge produced by a piezoelectric element 35 in response to a received pressure and outputs a corresponding voltage signal; drift component extraction units 230 and 240 that extract a drift component of the piezoelectric element 35 by performing differential processing on the voltage signal; and a drift correction unit 250 that generates, based on the extracted drift component, a correction signal for removing the drift component and feeds the correction signal back to an input side of the charge amplifier.

Abstract: Provided is a pressure sensor capable of curbing the influence of heat and securing prescribed sensor precision. The pressure sensor includes: a tubular housing (10, 20); a pressure measurement member (80) accommodated in the housing and including a piezoelectric element; a diaphragm (30) including a flexible plate-shaped portion (31) secured to a distal end of the housing and a projecting portion (32) adapted to transmit a load to the pressure measurement member; and a shielding plate (40) disposed adjacent to the flexible plate-shaped portion to shield the diaphragm from a pressure medium, and the shielding plate (40) is secured to the flexible plate-shaped portion (31) by a bonding region (A) in a linear shape.

Abstract: A pressure sensor of the present invention comprises a cylindrical housing (10, 210); a diaphragm (30) which is fixed to the front end of the housing and exposed to a pressure medium; a pressure measuring member (70, 270) comprising a first electrode (71), a piezoelectric element (72) and a second electrode (73) laminated in sequence inside the housing; a first conductor (91, 210) in a long shape which is electrically connected to the first electrode; a second conductor (92, 290) in a long shape which is electrically connected to the second electrode; and a restricting member (100, 300) having insulation which is arranged inside the housing so as to restrict relative movement between the first conductor and the second conductor According to this configuration, it is possible to suppress or prevent variations in parasitic capacitance so as to suppress or prevent the occurrence of noise.

Abstract: The disclosure provides a combustion abnormality detecting device, a combustion abnormality detecting method, and a non-transitory computer-readable storage medium, a misfire detection accuracy is increased by increasing a piezoelectric detection accuracy. A charge amplifier (210) outputting a voltage signal corresponding to a charge generated by a piezoelectric element (35) in response to a received pressure, a drift component extracting part (230) extracting a drift component of the piezoelectric element (35), a drift correcting part (250) generating a correction signal for removing the drift component based on the extracted drift component and feeding back the correction signal to an input side of the charge amplifier (210), and a misfire detecting part (400) performing misfire detection based on the correction signal are included.

Abstract: A pressure detection signal processing device, engine control system, and non-transitory computer readable medium storing a program are provided. A current-voltage conversion part that converts a current signal corresponding to charge generated by a piezoelectric element in accordance with received pressure into a voltage signal, and digital signal processing parts that perform correction for removing a drift caused by a leakage current of the piezoelectric element on the voltage signal through digital signal processing are provided. The digital signal processing parts include a differentiation processing part that performs differentiation processing on the voltage signal, an integration processing part that performs integration processing on the signal having been subjected to the differentiation processing, and an integration processing part that further performs integration processing on the signal having been subjected to the integration processing.

Abstract: The disclosure provides a combustion abnormality detecting device, a combustion abnormality detecting method, and a non-transitory computer-readable storage medium, a misfire detection accuracy is increased by increasing a piezoelectric detection accuracy. A charge amplifier (210) outputting a voltage signal corresponding to a charge generated by a piezoelectric element (35) in response to a received pressure, a drift component extracting part (230) extracting a drift component of the piezoelectric element (35), a drift correcting part (250) generating a correction signal for removing the drift component based on the extracted drift component and feeding back the correction signal to an input side of the charge amplifier (210), and a misfire detecting part (400) performing misfire detection based on the correction signal are included.

Abstract: A pressure detection signal processing device, engine control system, and non-transitory computer readable medium storing a program are provided. A current-voltage conversion part that converts a current signal corresponding to charge generated by a piezoelectric element in accordance with received pressure into a voltage signal, and digital signal processing parts that perform correction for removing a drift caused by a leakage current of the piezoelectric element on the voltage signal through digital signal processing are provided. The digital signal processing parts include a differentiation processing part that performs differentiation processing on the voltage signal, an integration processing part that performs integration processing on the signal having been subjected to the differentiation processing, and an integration processing part that further performs integration processing on the signal having been subjected to the integration processing.

Abstract: A pressure sensor is provided. In a pressure sensor including tubular housings, a diaphragm fixed to a tip end of the housing and exposed to a pressured medium, and a pressure measurement member constituted by a first electrode, a piezoelectric element, and a second electrode which are sequentially stacked inside the housing, a heat-insulating member disposed inside the housing so as to be interposed between the diaphragm and the first electrode is provided.

Abstract: A pressure sensor is provided. Provided is a pressure sensor including a tubular housing which defines an axial line, a diaphragm which is fixed to a tip end of the housing and exposed to a pressured medium, a pressure measurement member which is constituted by a first electrode, a piezoelectric element, and a second electrode which are sequentially stacked in a direction of the axial line from the tip end side inside the housing, and a preload imparting member which is disposed inside the housing and is configured such that a center region centering on the axial line is configured to have a solid form to impart a preload by pressing the pressure measurement member toward the diaphragm.

Abstract: Provided is a pressure sensor capable of minimizing an influence of heat and accurately detecting a pressure of a high temperature pressure medium. The pressure sensor includes a housing including a tubular tip portion, a pressure measuring part including a piezoelectric substance while being accommodated in the housing, and a diaphragm including a flexible plate-shaped section fixed to an inner side of the tubular tip portion and a rod section interposed between the flexible plate-shaped section and the pressure measuring part, wherein a heat shield plate held on the inner side of the tubular tip portion to shield the diaphragm from a pressure medium is provided. Accordingly, an influence of heat can be minimized, and a pressure of a high temperature pressure medium can be accurately detected.

Abstract: A glow plug includes: a heater power-conduction shaft that supplies power to a heater; a pressure detection element that is provided in an axial-direction end portion of the heater power-conduction shaft and converts pressure that the heater power-conduction shaft receives in the axial direction into an electrical signal; a first insulation member that surrounds an outer periphery of the pressure detection element with respect to the axis, and allows a signal output terminal of the pressure detection element to protrude toward an outer peripheral side of the axis; a power supply wire that is provided on an outer peripheral side of the first insulation member with respect to the axis, and is connected to the heater power-conduction shaft to supply power to the heater; a signal processing circuit that is provided on an outer peripheral side of the power supply wire with respect to the axis, and is connected to the signal output terminal to process an electrical signal of the pressure detection element; and a se

Abstract: A shape of a boundary line between a forward view in a forward field of vision of a driver and a vehicle structural part that blocks a lower end of the forward view, i.e., the shape of a so-called visible edge of a vehicle hood, a shape of a visible edge of a vehicle instrument panel, or a shape of a top edge of a ceramic line formed at a windshield glass is made to be a curve. The curve may be expressed by hyperbolic function y2=Ax2+2Bx+C, where x is a depression angle, y is an azimuth angle, A is a constant expressed by a sum of a ratio of a distance between a viewpoint height and a roll axis with respect to the viewpoint height and a reciprocal of a product of a roll rate and the viewpoint height, B is a constant expressed by a reciprocal of the roll rate, and C is a constant expressed by the constant A, the constant B and a depression angle of a sight-line direction of a driver.

Abstract: A glow plug includes: a heater power-conduction shaft that supplies power to a heater; a pressure detection element that is provided in an axial-direction end portion of the heater power-conduction shaft and converts pressure that the heater power-conduction shaft receives in the axial direction into an electrical signal; a first insulation member that surrounds an outer periphery of the pressure detection element with respect to the axis, and allows a signal output terminal of the pressure detection element to protrude toward an outer peripheral side of the axis; a power supply wire that is provided on an outer peripheral side of the first insulation member with respect to the axis, and is connected to the heater power-conduction shaft to supply power to the heater; a signal processing circuit that is provided on an outer peripheral side of the power supply wire with respect to the axis, and is connected to the signal output terminal to process an electrical signal of the pressure detection element; and a se

Abstract: [Problem] To provide a pressure sensor element which is not greatly decreased in the resistance due to temperature increase. [Solution] A pressure sensor element which is provided with a piezoelectric element and a high-resistance material film. The piezoelectric element has an upper surface and a lower surface. The high-resistance material film at least partially covers the upper surface and/or the lower surface. The electrical resistance of the high-resistance material film is higher than the electrical resistance of the piezoelectric element.

Abstract: A hydrogen sensor comprising: a substrate, a detection film which is formed on the substrate and is composed of a rare earth metal, a protection film which is formed on the detection film and is a dispersion of hydrogen-permeable metal particles in a ceramic material, and a pair of electrodes which is formed apart on the protection film and are electrically connected with the detection film via the protection film. The hydrogen-permeable metal particles are Pd, Pt, Nb, V and Ta and the preferable content thereof is 20 to 70% by mass. It is preferred that the resistance of the protection film between the electrodes is 10 to 100,000 ? and that the resistance of the detection film in the interelectrode direction is smaller than the resistance of the protection film in the interelectrode direction.

Abstract: A hydrogen sensor (100) is provided with a substrate (2), a detection film (4) formed on the substrate (2), and a hydrogen permeable protective film (10) formed on the detection film (4). The detection film (4) is composed of a first ceramic (6) and rare-earth metal particles (8) dispersed in the first ceramic (6). The protective film (10) is composed of a second ceramic (12) and hydrogen permeable metal particles (14) dispersed in the second ceramic (12). Preferably, the thickness of the detection film (4) is 5 to 1,000 nm, and the thickness of the hydrogen permeable protective film (10) is 5 to 40 nm.

Abstract: An object is to improve reliability and availability of a storage system. A single service processor (SVP 20) manages a plurality of storage apparatuses 10. The storage apparatus 10 includes a channel substrate 11, a drive substrate 13, a cache memory 14, and a processor substrate 12 as well as a sub-service processor (SSVP 18) that has an environment monitor unit 181 acquiring operation state information and a service processor monitoring unit (SVP monitoring unit 182) monitoring a SVP 20 and that is coupled to the processor substrate 12. The SVP 20 includes a communication control unit 203 coupled via a communication network 52 to the respective processor substrates 12 of the storage apparatuses 10 and a power control unit 205 coupled via a communication line to the SSVP 18 and powering off or on the SVP 20 according to a control signal sent from the SVP monitoring unit 182 via the communication line 55.

Abstract: A hydrogen-permeable film has a ceramic material of a nitride or oxide of a metal element belonging to group IVB, VB or VIB and hydrogen-permeable metal particles of at least one kind selected from palladium (Pd), niobium (Nb), vanadium (V), tantalum (Ta) and alloys thereof dispersed in the ceramic material. A ratio of the hydrogen-permeable metal particles in the hydrogen-permeable film is 20 to 70 mass %, and a thickness of the hydrogen-permeable film is 5 to 1,000 nm.

Abstract: An object is to improve reliability and availability of a storage system. A single service processor (SVP 20) manages a plurality of storage apparatuses 10. The storage apparatus 10 includes a channel substrate 11, a drive substrate 13, a cache memory 14, and a processor substrate 12 as well as a sub-service processor (SSVP 18) that has an environment monitor unit 181 acquiring operation state information and a service processor monitoring unit (SVP monitoring unit 182) monitoring a SVP 20 and that is coupled to the processor substrate 12. The SVP 20 includes a communication control unit 203 coupled via a communication network 52 to the respective processor substrates 12 of the storage apparatuses 10 and a power control unit 205 coupled via a communication line to the SSVP 18 and powering off or on the SVP 20 according to a control signal sent from the SVP monitoring unit 182 via the communication line 55.

Abstract: A hydrogen sensor (100) is provided with a substrate (2), a detection film (4) formed on the substrate (2), and a hydrogen permeable protective film (10) formed on the detection film (4). The detection film (4) is composed of a first ceramic (6) and rare-earth metal particles (8) dispersed in the first ceramic (6). The protective film (10) is composed of a second ceramic (12) and hydrogen permeable metal particles (14) dispersed in the second ceramic (12). Preferably, the thickness of the detection film (4) is 5 to 1,000 nm, and the thickness of the hydrogen permeable protective film (10) is 5 to 40 nm.