Abstract: There is provided a method of producing a gas sensor element capable of detecting a concentration of specific ions based on a limiting current passing between a first electrode and a second electrode according to a concentration difference of the specific ions. The method includes a temperature raising step, a current measuring step and a control step. In the temperature raising step, a heater is energized to raise temperature of a solid electrolyte. In the current measuring step, a voltage is applied across the first and second electrodes and to measure a limiting current. In the control step, a part of a diffusion resistance layer is removed from the gas sensor element by using an ultrashort pulsed laser to control a diffusion length that is a length of an introduction path to maintain the limiting current to be within a final standard range.

Abstract: The present disclosure provides a solid-state imaging element, an electronic device, and an imaging method capable of obtaining information regarding an object regardless of a motion state of the object. According to the present disclosure, the solid-state imaging element includes: a plurality of photoelectric conversion elements that performs photoelectric conversion to generate a photoelectric conversion signal; and a generation unit that generates a first signal in a case where an amount of change of a photoelectric conversion signal output from a single photoelectric conversion element among the plurality of photoelectric conversion elements exceeds a predetermined value, and generates a second signal in a case where a difference value between photoelectric conversion signals output from two photoelectric conversion elements among the plurality of photoelectric conversion elements exceeds a predetermined value.

Abstract: The present disclosure provides an imaging device and an imaging method capable of generating a DVS image and a gradation image at a higher speed. An imaging device includes: a pixel array unit including a plurality of DVS pixels that outputs a first luminance signal corresponding to a light amount and a plurality of gradation pixels that outputs a second luminance signal corresponding to the light amount; a detection circuit that outputs a detection signal indicating occurrence of an address event in a case where a first luminance signal of each of the plurality of DVS pixels exceeds a predetermined threshold; a first reading unit that reads the first luminance signal from the plurality of DVS pixels and converts the first luminance signal into digital data; a second reading unit that reads the second luminance signal from the plurality of gradation pixels and converts the second luminance signal into digital data; and a control circuit that controls the first reading unit and the second reading unit.

Abstract: The present disclosure provides an imaging device capable of outputting a signal other than an event detection signal, such as a pixel signal at a gradation level. The imaging device has a stacked chip structure formed by stacking at least two semiconductor chips including a first-layer semiconductor chip and a second-layer semiconductor chip. The first-layer semiconductor chip has a pixel array unit in which an event pixel that outputs an event detection signal, and a distance measurement pixel are mixed. The second-layer semiconductor chip is provided with an analog front-end unit for an event pixel that processes the event detection signal and with an analog front-end unit for a distance measurement pixel that processes the signal from the light-receiving element, corresponding to each of the event pixel and the distance measurement pixel.

Abstract: There is no risk of generating unnecessary events. This imaging device comprises: a photoelectric conversion unit that has a plurality of photoelectric conversion elements for performing photoelectric conversion to generate an electric signal; a setting unit that sets a threshold value according to a noise level in a predetermined region among the plurality of photoelectric conversion elements; and a first detection unit that detects a detection signal in a case where the amount of change in the electric signal generated by the plurality of photoelectric conversion elements exceeds the threshold value.

Abstract: There is no possibility of causing a useless event. An imaging device includes: a photoelectric conversion unit including a plurality of photoelectric conversion elements that performs photoelectric conversion to generate an electrical signal; a setting unit that sets a threshold value according to a noise level of a predetermined area of the plurality of photoelectric conversion elements; and a first detection unit that detects a detection signal in a case where a change amount of the electrical signal generated by the plurality of photoelectric conversion elements exceeds the threshold value.

Abstract: To improve the frame rate in an imaging apparatus that carries out still image recording and moving image display simultaneously. A pixel array includes an arrangement of a plurality of pixels. The plurality of pixels each include an internal memory. An exposure control unit carries out first exposure control in which captured data obtained by performing exposure to all the plurality of pixels together is retained in the internal memories of the pixels. The exposure control unit also carries out second exposure control in which captured data obtained by performing exposure to specific pixels of the plurality of pixels together is retained in the internal memories of the pixels.

Abstract: An imaging device capable of reducing a useless region on a substrate is provided. An imaging device including a plurality of substrates to be stacked includes a readout-only circuit disposed on a substrate different from a substrate having a pixel array unit including a plurality of photoelectric conversion elements disposed thereon, and performing an operation of reading out electrical signals obtained through photoelectric conversion in the plurality of photoelectric conversion elements, and a circuit disposed on a substrate different from the substrate having the readout-only circuit disposed thereon and performing an operation other than an operation of the readout-only circuit on the basis of the electrical signals.

Abstract: In a detection apparatus that detects an anomaly of equipment, in a case where a plurality of types of anomalies occur, it is desired to detect which type of anomaly has occurred. Provided is a detection apparatus that includes a sensor data obtaining unit configured to obtain sensor data of a sensor installed in equipment, a model storage unit configured to store detection models that are individually trained for each anomaly using the sensor data in an anomaly period in which the anomaly has occurred, for a plurality of types of respective anomalies of the equipment, and a detection unit configured to detect presence or absence of the plurality of types of respective anomalies from the sensor data that has been newly obtained, by using the detection models corresponding to the plurality of types of respective anomalies.

Abstract: In a gas sensor, a housing is formed into a cylindrical shape. A holding portion is arranged inside the housing and is formed into a cylindrical shape that has a through hole that passes through in an axial direction, when a direction in which an axis of the housing extends is the axial direction. A sensor element is formed to extend in the axial direction in a state where the sensor element passes through the through hole in the holding portion and detects a gas to be measured on one side in the axial direction. A glass seal is arranged inside the holding portion, is made of a glass material, and seals between the sensor element and the holding portion. A shock mitigating portion that mitigates shock being transferred from outside the housing through the holding portion to the glass seal is housed between the housing and the holding portion.

Abstract: There is provided a method of producing a gas sensor element capable of detecting a concentration of specific ions based on a limiting current passing between a first electrode and a second electrode according to a concentration difference of the specific ions. The method includes a temperature raising step, a current measuring step and a control step. In the temperature raising step, a heater is energized to raise temperature of a solid electrolyte. In the current measuring step, a voltage is applied across the first and second electrodes and to measure a limiting current. In the control step, a part of a diffusion resistance layer is removed from the gas sensor element by using an ultrashort pulsed laser to control a diffusion length that is a length of an introduction path to maintain the limiting current to be within a final standard range.

Abstract: A gas sensor is provided which includes a hollow metallic housing, a sensor device installed in the housing, and a seal disposed in the housing to hermetically isolate between the housing and the sensor device. The housing has an inner shoulder formed on an inner periphery thereof. The seal is retained on the inner shoulder. The seal is made up of a powder body and a glass body. The powder body is made of inorganic powder and mounted on the inner shoulder. The glass body is arranged on the powder body and has a varying coefficient of thermal expansion which alleviates a difference in thermal expansion between the sensor device and the housing, thereby ensuring the stability of hermetic sealing ability of the seal in high-temperature environments.

Abstract: In a detection apparatus that detects an anomaly of equipment, in a case where a plurality of types of anomalies occur, it is desired to detect which type of anomaly has occurred. Provided is a detection apparatus that includes a sensor data obtaining unit configured to obtain sensor data of a sensor installed in equipment, a model storage unit configured to store detection models that are individually trained for each anomaly using the sensor data in an anomaly period in which the anomaly has occurred, for a plurality of types of respective anomalies of the equipment, and a detection unit configured to detect presence or absence of the plurality of types of respective anomalies from the sensor data that has been newly obtained, by using the detection models corresponding to the plurality of types of respective anomalies.

Abstract: A device maintenance apparatus, includes: a communication control part configured to control a communication with a device; a device information acquisition part configured to acquire device information of the device via the communication; a storage configured to store maintenance process information, the maintenance process information including device specifying information for specifying a maintenance target device and process specifying information for specifying details of a maintenance process; and an information processing part configured to compare the acquired device information to the stored maintenance process information, and to execute a maintenance process on the device based on the result of the comparison.

Abstract: A device system includes a terminal device which is usable by a plant worker, and an information processor which is connectable to the terminal device through a network. The terminal device includes a collector configured to collect a detection result from a sensor which detects a state around a device installed in a plant, and a communicator configured to transmit the detection result collected by the collector to the information processor. The information processor includes a storage which stores teacher data in which past detection results obtained by the sensor and data representing whether or not an abnormality exists in the device are associated with each other, and an analyzer configured to determine whether or not an abnormality exists in the device based on the detection result transmitted from the communicator and the teacher data stored in the storage.

Abstract: To easily perform examination of at least one facility based on detection signals of a plurality of sensors installed in the facility. Provided are an examining apparatus, an examining method and a recording medium, including: a group designation acquiring unit to acquire designation of a targeted group including a plurality of targeted sensors to be analyzed among a plurality of sensors installed in at least one facility; a sensor data acquiring unit to acquire sensor data from each targeted sensor included in the targeted group; a learning unit to learn an analysis model by using the sensor data from each targeted sensor included in the targeted group; and an examining unit to examine the facility by using the learned analysis model.

Abstract: A device maintenance apparatus, includes: a communication control part configured to control a communication with a device; a device information acquisition part configured to acquire device information of the device via the communication; a storage configured to store maintenance process information, the maintenance process information including device specifying information for specifying a maintenance target device and process specifying information for specifying details of a maintenance process; and an information processing part configured to compare the acquired device information to the stored maintenance process information, and to execute a maintenance process on the device based on the result of the comparison.

Abstract: A device system includes a terminal device which is usable by a plant worker, and an information processor which is connectable to the terminal device through a network. The terminal device includes a collector configured to collect a detection result from a sensor which detects a state around a device installed in a plant, and a communicator configured to transmit the detection result collected by the collector to the information processor. The information processor includes a storage which stores teacher data in which past detection results obtained by the sensor and data representing whether or not an abnormality exists in the device are associated with each other, and an analyzer configured to determine whether or not an abnormality exists in the device based on the detection result transmitted from the communicator and the teacher data stored in the storage.

Abstract: A gas sensor is provided which includes a hollow metallic housing, a sensor device installed in the housing, and a seal disposed in the housing to hermetically isolate between the housing and the sensor device. The housing has an inner shoulder formed on an inner periphery thereof. The seal is retained on the inner shoulder. The seal is made up of a powder body and a glass body. The powder body is made of inorganic powder and mounted on the inner shoulder. The glass body is arranged on the powder body and has a varying coefficient of thermal expansion which alleviates a difference in thermal expansion between the sensor device and the housing, thereby ensuring the stability of hermetic sealing ability of the seal in high-temperature environments.

Abstract: An information setting method for a setting device includes the following processes. A first certificate and identification information are obtained from a wireless device to be caused to join a wireless network managed by a management device. The first certificate certifies that the wireless device is a formal wireless device and includes a first public key. The identification information is information that identifies the wireless device. A second certificate is obtained from the management device. The second certificate certifies that the management device is a formal management device and includes a second public key. Apparatus information required for the wireless device to join the wireless network is encoded using the first public key and is output to the wireless device. Management information including the apparatus information and the identification information associated with the apparatus information is encoded using the second public key and is output to the management device.