Abstract: A wireless communication system includes a wireless sensor provided inside a metal housing; a receiver provided outside the metal housing to receive radio waves from the wireless sensor; and a passive repeater provided between the inside and the outside of the metal housing. The passive repeater includes a receiving antenna provided inside the metal housing and a transmitting antenna provided outside the metal housing. The receiving antenna of the passive repeater and the transmitting antenna of the passive repeater are electrically connected through a hole formed in the metal housing.

Abstract: A sensor includes a generator configured to generate a predetermined detection target, a detector configured to detect the detection target generated by the generator, and a substrate provided with the generator and the detector. The substrate includes a first portion provided with the generator, a second portion provided with the detector, a bent portion that is bent between the first portion and the second portion such that the generator and the detector face each other, and a ground pattern provided in a portion including the first portion, the second portion, and the bent portion. In the ground pattern, a ground pattern of the bent portion is narrower than a ground pattern of the first portion and a ground pattern of the second portion.

Abstract: A wireless communication system includes a wireless sensor provided inside a metal housing; a receiver provided outside the metal housing to receive radio waves from the wireless sensor; and a passive repeater provided between the inside and the outside of the metal housing. The passive repeater includes a receiving antenna provided inside the metal housing and a transmitting antenna provided outside the metal housing. The receiving antenna of the passive repeater and the transmitting antenna of the passive repeater are electrically connected through a hole formed in the metal housing.

Abstract: A sensor includes a generator configured to generate a predetermined detection target, a detector configured to detect the detection target generated by the generator, and a substrate provided with the generator and the detector. The substrate includes a first portion provided with the generator, a second portion provided with the detector, a bent portion that is bent between the first portion and the second portion such that the generator and the detector face each other, and a ground pattern provided in a portion including the first portion, the second portion, and the bent portion. In the ground pattern, a ground pattern of the bent portion is narrower than a ground pattern of the first portion and a ground pattern of the second portion.

Abstract: A sensor configured to detect displacement of a rotation angle of a shaft due to a rotation or a turn of the shaft, the sensor includes: a bearing rotatably supporting the shaft; and a housing including a bearing hole to which the bearing is fixed. The shaft and an inner circumferential surface of the bearing are fixed to each other by an adhesive agent, and an outer circumferential surface of the bearing and an inner circumferential surface of the bearing hole of the housing are fixed to each other by an adhesive agent.

Abstract: A sensor manufacturing method is a method for manufacturing a sensor including a generator that generates a predetermined detection target, a detector that detects the detection target generated by the generator, and a motion body that performs motion in the area in between the generator and the detector. In the method, the generator and the detector are positioned opposite to each other by either curving or bending a substrate including a first portion having the generator installed thereon and a second portion having the detector installed thereon that are formed in an integrated manner, and the substrate and the motion body are made to perform relative movement in such a way that the motion body enters the area in between the generator and the detector.

Abstract: A sensor including a generating unit; a detecting unit; a substrate; a member that exerts influence on an object to be detected; and a housing that includes a first housing that operably supports the member and a second housing to which a part of the substrate is fixed. The substrate includes a first portion provided with the generating unit and a second portion provided with the detecting unit that are integrated, and has a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. One of the first portion and the second portion is fixed to the second housing. A surface of the other of the first portion and the second portion adheres to the first housing.

Abstract: A sensor including: a generating unit; a detecting unit that detects the object to be detected generated by the generating unit; and a substrate at which the generating unit and the detecting unit are provided. The substrate is a flexible substrate that includes a first portion provided with the generating unit and a second portion provided with the detecting unit, the first portion and the second portion being integrated, and that takes a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. A plate support member is attached to a back-side surface of at least one of the surface of the first portion and the surface of the second portion.

Abstract: A sensor configured to detect displacement of a rotation angle of a shaft due to a rotation or a turn of the shaft, the sensor includes: a bearing rotatably supporting the shaft; and a housing including a bearing hole to which the bearing is fixed. The shaft and an inner circumferential surface of the bearing are fixed to each other by an adhesive agent, and an outer circumferential surface of the bearing and an inner circumferential surface of the bearing hole of the housing are fixed to each other by an adhesive agent.

Abstract: An abnormality diagnosis system includes a bearing having a plurality of components, a plurality of sensors disposed at different positions of the component and configured to detect surrounding signals, and an abnormality diagnosis device configured to diagnose abnormalities of the rolling bearing and a device disposed around the rolling bearing, based on signals output from the plurality of sensors.

Abstract: A sensor manufacturing method is a method for manufacturing a sensor including a generator that generates a predetermined detection target, a detector that detects the detection target generated by the generator, and a motion body that performs motion in the area in between the generator and the detector. In the method, the generator and the detector are positioned opposite to each other by either curving or bending a substrate including a first portion having the generator installed thereon and a second portion having the detector installed thereon that are formed in an integrated manner, and the substrate and the motion body are made to perform relative movement in such a way that the motion body enters the area in between the generator and the detector.

Abstract: An optical sensor including a light-emitting element, four light-receiving elements facing the light-emitting element, and a substrate at which the light-emitting element and the light-receiving elements are provided. The substrate includes a first portion at which the light-emitting element is provided and a second portion at which the light-receiving elements are provided, the first portion and the second portion being integrated. Respective distances from the four light-receiving elements to one point on a predetermined plane are equal, four line segments that connect the one point and centers of respective light-receiving regions of the four light-receiving elements form right angles with each other, and a normal line of the predetermined plane that passes through the one point passes through an emission point of the light of the light-emitting element or a center of an emission surface of the light of the light-emitting element.

Abstract: An abnormality diagnosis system includes a bearing having a plurality of components, a plurality of sensors disposed at different positions of the component and configured to detect surrounding signals, and an abnormality diagnosis device configured to diagnose abnormalities of the rolling bearing and a device disposed around the rolling bearing, based on signals output from the plurality of sensors.

Abstract: This abnormality diagnosis system is provided with: a bearing comprising a plurality of constituent members; a sensor that is installed on a constituent member and detects signals from the surroundings; and an abnormality diagnosis device that diagnoses, on the basis of signals output from the sensor, abnormalities in the rolling bearing or in a device located at the periphery of the rolling bearing.

Abstract: Provided is a wire electrical discharge machining device which has a tension controller for maintaining the tension of a traveling wire electrode at a tension. The tension controller includes: an allowed tension calculation module for determining an allowed tension that is less than a wire breaking tension at which the wire electrode breaks; and a set tension generation module for generating the set tension in accordance with the allowed tension. When the set tension is greater than the allowed tension, the set tension generation module reduces the set tension. When the set tension is less than the allowed tension, the set tension generation module increases the set tension in such a way that the set tension does not exceed the allowed tension.

Abstract: The present invention relates to an electric discharge machining device. The electric discharge machining device includes: a first switch provided between the positive pole of a power supply and a work piece; a second switch provided between the negative pole of the power supply and the work piece; a third switch provided between the negative pole of the power supply and a tool electrode; a fourth switch provided between the positive pole of the power supply and the tool electrode; and a pulse generating device. In order to supply current pulses with a straight polarity, the pulse generating device repeatedly switches on and off either the first or third switch while the other switch is on. In order to supply current pulses with a reverse polarity, the pulse generating device repeatedly switches on and off either the second or fourth switch while the other switch is on.

Abstract: A sensor including: a generating unit; a detecting unit that detects the object to be detected generated by the generating unit; and a substrate at which the generating unit and the detecting unit are provided. The substrate is a flexible substrate that includes a first portion provided with the generating unit and a second portion provided with the detecting unit, the first portion and the second portion being integrated, and that takes a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. A plate support member is attached to a back-side surface of at least one of the surface of the first portion and the surface of the second portion.

Abstract: A power supply system for wire electric discharge machining includes a first power supply circuit and a second power supply circuit. The first power supply circuit applies, to the machining gap, a voltage that induces a discharge. The second power supply circuit, which includes a low inductance line, supplies a current, which contributes to the machining, to the machining gap,. A blocking diode is series-connected between the low inductance line and the machining gap. A container, which has a contact surface contacting with the blocking diode and contains a cooling liquid, is provided.

Abstract: A sensor including a generating unit; a detecting unit; a substrate; a member that exerts influence on an object to be detected; and a housing that includes a first housing that operably supports the member and a second housing to which a part of the substrate is fixed. The substrate includes a first portion provided with the generating unit and a second portion provided with the detecting unit that are integrated, and has a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. One of the first portion and the second portion is fixed to the second housing. A surface of the other of the first portion and the second portion adheres to the first housing.

Abstract: An optical sensor including a light-emitting element, four light-receiving elements facing the light-emitting element, and a substrate at which the light-emitting element and the light-receiving elements are provided. The substrate includes a first portion at which the light-emitting element is provided and a second portion at which the light-receiving elements are provided, the first portion and the second portion being integrated. Respective distances from the four light-receiving elements to one point on a predetermined plane are equal, four line segments that connect the one point and centers of respective light-receiving regions of the four light-receiving elements form right angles with each other, and a normal line of the predetermined plane that passes through the one point passes through an emission point of the light of the light-emitting element or a center of an emission surface of the light of the light-emitting element.