Abstract: According to one embodiment, an anomaly detection apparatus includes a processing circuit. The processing circuit is configured to: acquire measured values from sensors installed in a system, a first function, a first threshold, and a second function to output a second threshold; generate the predicted values based on the measured value and the first function; detect that a deviation between the measured values and the predicted values exceeds the first threshold; calculate the feature quantities based on the measured values; and determine whether a number of consecutive times is equal to or larger than the second threshold to detect an anomaly or a sign of the anomaly.

Abstract: An electromagnetic wave sensor 1 has electromagnetic wave absorbers disposed side by side in first and second directions, temperature detection portions held by the respective electromagnetic wave absorbers and sets of two arm portions connected to each electromagnetic wave absorber at two connection portions. In a plan view, the arm portions have two first extending portions extending from the connection portions in directions of which components in the second direction are opposite to each other, and two second extending portions extending from the first extending portions in directions of which components in the first direction are opposite to each other. Four sides of a rectangle circumscribing each of the electromagnetic wave absorbers with a smallest area are inclined with respect to the first direction in directions in which each electromagnetic wave absorber is away from the second extending portions with the connection portions as fulcrums.

Abstract: An element array circuit includes one or more first wiring lines, second wiring lines, impedance elements, one or more operational amplifiers, one or more conversion elements, and one or more switchers. The second wiring lines each extend in a direction different from a direction of extension of the first wiring lines. The impedance elements are each coupled to one each of the first and second wiring lines. The operational amplifiers each include a positive input terminal, a negative input terminal couplable to one of the second wiring lines, and an output terminal. The conversion elements are each coupled to the negative input terminal and the output terminal, and each convert a current flowing through the second wiring line coupled to the negative input terminal into a voltage. The switchers are each coupled to one of the conversion elements and come into a conducting state or a nonconducting state.

Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.

Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.

Abstract: A thermistor element includes: a thermistor film; a first electrode provided in contact with one surface of the thermistor film; and a pair of second electrodes provided in contact with an other surface of the thermistor film, wherein the thermistor film is provided to cover a periphery of the first electrode.

Abstract: Electromagnetic wave sensor (infrared sensor) 1 has: a first substrate; a second substrate that faces the first substrate and that allows infrared rays to pass through at least a part of the second substrate; first circumferential wall 4a that is positioned between the first substrate and the second substrate and that forms first space 8a together with the first and second substrates; bolometer structures 7 that are provided in first space 8a; first measuring element 9a that is provided in first space 8a and that is used for taking a first measurement relating to pressure P1 in first space 8a; and a monitoring portion. The monitoring portion acquires the first measurement that is taken using first measuring element 9a and outputs a predetermined signal indicating an abnormality based on at least the first measurement.

Abstract: A thermistor element includes: a thermistor film; a pair of first electrodes in contact with one surface of the thermistor film; an insulation film opposite to a contact side of the pair of first electrodes, the contact side on which the pair of first electrodes is in contact with the thermistor film; and at least one opening portion located in a region which overlaps each of the first electrodes when viewed in a plan view and passing through the insulation film. Each first electrode has a first portion located where each of the first electrodes and the opening portion overlap when viewed in a plan view and a second portion outside of where each of the first electrodes and the opening portion overlap when viewed in a plan view and is over the first portion and second portion to be in contact with the one surface of the thermistor film.

Abstract: A thermistor element includes a thermistor film, a first electrode provided in contact with one surface of the thermistor film, and a pair of second electrodes provided in contact with the other surface of the thermistor film, wherein the thermistor film includes an oxide having a spinel crystal structure and having a [111] preferred orientation in a film thickness direction.

Abstract: The present disclosure includes an electromagnetic wave detector, and a pair of arms that are positioned on both sides with the electromagnetic wave detector interposed therebetween. The electromagnetic wave detector includes a temperature detection element, and electromagnetic wave absorbers which cover at least a part of the temperature detection element. The structure body has a structure in which the electromagnetic wave detector is hung or suspended with respect to a substrate facing the electromagnetic wave detector via the pair of arms. Area of a surface of the pair of arms on a side facing the substrate are larger than area of surface thereof on a side opposite to the side facing the substrate.

Abstract: A structure body includes: an electromagnetic wave detector; and a pair of arm portions that are positioned on both sides with the electromagnetic wave detector interposed therebetween. The electromagnetic wave detector includes a temperature detection element and an electromagnetic wave absorber which covers at least a part of the temperature detection element. Each of the arm portions includes a wiring layer which is in a line shape and electrically connected to the temperature detection element, and protective layers, a part of each of which is disposed on corresponding one of both sides of the wiring layer. The protective layers are made of a material having a lower thermal conductivity than the wiring layer. In a short direction of the protective layers in a plan view, the wiring layer is positioned on an inward side of both end portions of the protective layers in the short direction.

Abstract: The present invention includes an electromagnetic wave detector, and a pair of arm portions and that are positioned on both sides with the electromagnetic wave detector interposed therebetween. The electromagnetic wave detector includes a temperature detection element, and electromagnetic wave absorbers which cover at least a part of the temperature detection element. Each of the arm portions includes a conductor layer which is in a line shape and electrically connected to the temperature detection element, and dielectric layers which are disposed on both sides of the conductor layer. In a short direction of the dielectric layers in a plan view, the conductor layer has a shape protruding outward beyond both end portions of the dielectric layers in the short direction.

Abstract: An electromagnetic wave sensor has electromagnetic wave absorbers disposed side by side in first and second directions, temperature detection portions held by the respective electromagnetic wave absorbers and sets of two arm portions connected to each of the electromagnetic wave absorbers at two connection portions. In a plan view, the arm portions have two first extending portions extending from the connection portions in directions of which components in the second direction are opposite to each other, and two second extending portions extending from the first extending portions in directions of which components in the first direction are opposite to each other. Four sides of a rectangle circumscribing each of the electromagnetic wave absorbers with a smallest area are inclined with respect to the first direction in directions in which each of the electromagnetic wave absorbers approaches the second extending portions with the connection portions as fulcrums.

Abstract: An electromagnetic wave sensor 1 has electromagnetic wave absorbers disposed side by side in first and second directions, temperature detection portions held by the respective electromagnetic wave absorbers and sets of two arm portions connected to each electromagnetic wave absorber at two connection portions. In a plan view, the arm portions have two first extending portions extending from the connection portions in directions of which components in the second direction are opposite to each other, and two second extending portions extending from the first extending portions in directions of which components in the first direction are opposite to each other. Four sides of a rectangle circumscribing each of the electromagnetic wave absorbers with a smallest area are inclined with respect to the first direction in directions in which each electromagnetic wave absorber is away from the second extending portions with the connection portions as fulcrums.

Abstract: A resistive element array circuit includes word lines, bit lines, resistive elements, a selector, a differential amplifier, and a ground terminal. The word lines are coupled to a power supply. The resistive elements are each disposed at an intersection of corresponding one of the word lines and corresponding one of the bit lines. The selector is configured to select one word line and one bit line. The differential amplifier includes a positive input terminal configured to be coupled to the selected one of the bit lines which is selected by the selector, a negative input terminal configured to be coupled to non-selected one of the bit lines which is not selected by the selector and to non-selected one of the word lines which is not selected by the selector, an output terminal being coupled to the negative input terminal. The ground terminal is coupled to the positive input terminal.

Abstract: A heat utilizing device is provided in which the thermal resistance of the wiring layer is increased while an increase in electric resistance of the wiring layer is limited. Heat utilizing device has thermistor whose electric resistance changes depending on temperature; and wiring layer that is connected to thermistor. A mean free path of phonons in wiring layer is smaller than a mean free path of phonons in an infinite medium that consists of a material of wiring layer.

Abstract: A thermistor element includes: a thermistor film; a pair of first electrodes in contact with one surface of the thermistor film; an insulation film opposite to a contact side of the pair of first electrodes, the contact side on which the pair of first electrodes is in contact with the thermistor film; and at least one opening portion located in a region which overlaps each of the first electrodes when viewed in a plan view and passing through the insulation film. Each first electrode has a first portion located where each of the first electrodes and the opening portion overlap when viewed in a plan view and a second portion outside of where each of the first electrodes and the opening portion overlap when viewed in a plan view and is over the first portion and second portion to be in contact with the one surface of the thermistor film.

Abstract: A thermistor element includes: a thermistor film; a first electrode provided in contact with one surface of the thermistor film; and a pair of second electrodes provided in contact with an other surface of the thermistor film, wherein the thermistor film is provided to cover a periphery of the first electrode.

Abstract: A thermistor element includes a thermistor film, a first electrode provided in contact with one surface of the thermistor film, and a pair of second electrodes provided in contact with the other surface of the thermistor film, wherein the thermistor film includes an oxide having a spinel crystal structure and having a [111] preferred orientation in a film thickness direction.

Abstract: An electromagnetic wave sensor includes a substrate having transmittance of electromagnetic waves having a specific wavelength, an insulator layer provided on one surface side of the substrate, a thermistor film disposed to have a space between the thermistor film and one surface of the substrate, and a wiring part provided inside or on a surface of the insulator layer and electrically connected to the thermistor film, wherein a transmittance of the electromagnetic waves at a portion facing the thermistor film is relatively higher than a transmittance of the electromagnetic waves at a portion where the wiring part is provided in a layer in which the insulator layer is provided.