Omron Corporation

Hiroyuki Tsuchida

Ryota Hasegawa

Kazuaki Miyamoto

Koro Kitajima

Yusuke Nakayama

Masahiko Shibayama

Takao Nakazaki

Yusuke Hayashi

Kazushi Tanase

Kenji Matsuoka

Mitsuo Hatada

Arata Nakamura

Yuki Ushiro

Yasushi Matsuoka

Ryosuke Tsuzuki

Toshiyuki Ozaki

Hiroto Katsura

Koyo Ozaki

Shoichi Ohnaka

Chikashi Niimi

Kazuhiro Hayashi

Takuya Okamoto

Giichi Konishi

Hiroyuki Fujinaga

Makoto Iwai

Shoichi Konishi

Toru Aoki

Masayuki Kono

Takashi Otsuka

Masayuki Kitanaka

Yukio Yamaguchi

Shinjiro Kotani

The sensor adaptor includes a case body of which a front end is closed and a rear end is open, a cap body being engageable with the rear end of the case body, a seal member interposed between the case body and the cap body, and a fixing portion configured to fix the case body to the mounting portion. A part of the sensor is inserted into an accommodation space of the case body, and the remaining portion of the sensor is drawn out to the outside via an opening of the cap body. The seal member is disposed on a rear end side of the case body to surround the sensor. The seal member is brought into close contact with the case body and the sensor. Accordingly, a gap between the part of the sensor and the case body is sealed from an external space by the seal member.

Sensor mounting structure and sensor adaptor

A proximity sensor that outputs presence or absence of a detection object or a position of the detection object as a detection result includes: a detection part configured to include a detection coil and a capacitor; an oscillation circuit configured to excite the detection part; an analog/digital conversion circuit configured to detect a signal change occurring in the detection part and output a digital signal indicating the detected signal change; a temperature detection part configured to detect a temperature inside a casing of the proximity sensor; a storage part configured to store a characteristic parameter unique to the proximity sensor in advance; a control calculation part configured to process a digital signal from the analog/digital conversion circuit to calculate a signal indicating a distance to the detection object, compensate the calculated signal using the characteristics parameter stored in the storage part, and output the compensated signal as the detection result.

Proximity sensor

A proximity sensor and a method of changing a detection distance are provided to suppress changes in a consumption current of an oscillation circuit. The proximity sensor includes an oscillation circuit having an oscillation amplitude that changes with a feedback current, a comparing part comparing the oscillation amplitude with a threshold, a detecting part detecting a target object based on a comparison result of the comparing part, a voltage value signal generating part generating a voltage value signal based on the feedback current and the detection distance, a threshold setting part setting an analog signal converted from the voltage value signal as the threshold, a current value signal generating part generating a current value signal based on the detection distance and the voltage value signal, and a current value setting part setting an analog signal converted from the current value signal as a current value of the feedback current.

Proximity sensor and method of changing detection distance

A method of manufacturing a proximity sensor and a manufacturing system for the proximity sensor capable of improving detection precision or expanding a detectable range are provided. A method of manufacturing a proximity sensor outputting presence or absence of a detection object or a position of the detection object as a detection result is provided. The manufacturing method includes: disposing the proximity sensor in a temperature-changeable environment; setting an environment of the proximity sensor to a plurality of different temperatures respectively and storing temperature detected by the temperature detection part of the proximity sensor in association with the detection result output by the control calculation part at each temperature; determining a characteristic parameter unique to a target proximity sensor based on the stored temperature and detection result; and setting the determined characteristic parameter for the target proximity sensor.

Method of manufacturing proximity sensor and manufacturing system for proximity sensor

An output circuit outputs communication signals and communicates with an external device ED, and includes: a PNP first transistor, which is capable of outputting a collector current as the communication signals; and a first current source, which is capable of changing a base current of the first transistor, and which reduces the base current to a predetermined current value after the first transistor is turned on and before the first transistor is turned off.

Output circuit and output method

An IO-Link master includes: an IO-Link communication port that communicates with an IO-Link device according to a predetermined communication protocol; a digital input port that receives a first signal value output from the IO-Link device; and a determiner that determines whether abnormality is generated in a digital input line connecting the digital input port to the IO-Link device based on a second signal value received with the IO-Link communication port and the first signal value.

Control system, control method, control program, and recording medium

The present invention provides a proximity switch, which can detect whether a detected object containing multiple metals exists in a specific range. The induction type proximity switch includes: an oscillation switch of which the amplitude is attenuated due to the proximity of the detected object containing metal, so as to detect the excessive proximity of the detected object; a detection circuit for detecting the amplitude of a high frequency generated by the oscillation of the oscillation circuit; an operation and comparison part for comparing the detected amplitude of the high frequency with the threshold set for the amplitude, i.e., a boundary as the excessive proximity, and outputting a detection signal of the excessive proximity when the detected amplitude is under the threshold; and a threshold setting part, for selecting a threshold corresponding to a designated metal type according to the designation on the metal type from the outside.

Proximity switch

A proximity sensorcomprising a combination of an arbitrarily selected one of a plurality of types of detection end modules, a plurality of types of output circuit modulesand a plurality of types of outer shell cases. The detection end moduleincludes an integrated arrangement having a detection coil assembly () with the detection characteristic self-completed by a mask conductorfor reducing the conductor detection sensitivity in a specific peripheral area where the outer shell case is assumed to exist, and a detection circuit assembly () with the coil of the detection coil assembly as a resonance circuit element. The characteristics of the proximity sensor are completely adjusted before shipment. As a result, the adjustment of the characteristics which otherwise might be required each time is eliminated even in the case of the combination with an outer shell case of a different material. Thus, the commodity design and production are facilitated for a great variety of commodity specifications.

A coated electric wire is wound around a detection circuit in a planar manner for the purpose of electrostatic shield. This winding is performed, for example, spirally in a single layer. In the case where there are further provided a detection circuit board including a detection circuit and a cylindrical case, the coated electric wire is wound around the detection circuit board in a planar manner, wherein the direction of the axis of the cylindrical surface accords with the direction of the axis of the case. Consequently, there can be provided a sensor device in which the detection circuit can be electrostatically shielded with ease.

Sensor device with coated electric wire shielding

A proximity sensor according to the present invention includes protrusions that are provided on a wire-winding drum of a coil spool around which a lead wire of a detection coil is wound, that protrude toward the center from not less than three points distributed in the range exceeding a semi-circle on the circumference of the wire-winding drum and that are elastically brought into contact with the shaft of the core, respectively, thereby coaxially positioning the coil spool and the shaft of the core.

Proximity sensor with improved positioning accuracy for detection coil peripheral members

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Ayabe, Japan

Hiroyuki Tsuchida