Omron Corporation

Toyota Jidosha Kabushiki Kaisha

Ryosuke Tsuzuki

Shoichi Ohnaka

Jumpei Nakamura

Fukino Kawafuchi

Takehisa Hirose

Yusuke Iida

Heita Nada

Motoharu Okuno

Koyo Ozaki

Koji Iguchi

Osamu Harada

Kiyoshi Imai

Yuki Matsui

Hiroyuki Tsuchida

Takehiro Kawai

Toshiyuki Ozaki

Yukiharu Tomita

Ryota Hasegawa

Takuya Okamoto

Masanobu Horino

Tetsu Shimizu

Hikaru Arita

Mingke Yu

Kuniharu Shibata

Photoelectric sensor

Provided are a sensor device and a detection method. The sensor device includes: a light emitting unit transmitting a transmission signal toward a target; a light receiving unit receiving a reflected signal of the transmission signal and generating a binarized signal; a TDC delay line measurement unit and a waveform integration unit generating waveform data indicating temporal changes in the binarized signal and integrating the waveform data to generate integrated waveform data; a stage number calculation unit and a distance conversion unit calculating a near-side distance value and a far-side distance value from intersections of the integrated waveform data and a high threshold value and a low threshold value, respectively; and a determination unit determining whether the target is present on the basis of a distance value calculated from the near-side distance value and the far-side distance value and on the basis of a predetermined distance threshold value.

Sensor device and detection method

A sensor device measuring a distance to an object includes: a light projection unit repeatedly emitting detection light toward the object; a light reception unit receiving reflected light of the detection light and outputting a binarized light reception signal (RT); a light projection oscillation unit controlling the emission of the detection light and outputting a start signal synchronized with the emission of the detection light; a counter measurement unit starting counting of the RT when receiving the RT and the start signal, and outputting a stop signal corresponding to a feature point of the RT; a delay line measurement unit outputting a delay line output signal corresponding to the delay time of the RT near the feature point of the RT when receiving the RT and the stop signal; and a distance calculation unit calculating the distance to the object based on the delay line output signal.

Sensor device and measurement method

A photoelectric sensor including a light emitter and a light receiver is provided. The light emitter includes a light emitting unit configured to emit a light beam, and a power supply circuit configured to receive supply of electric power through a first power supply line leading to an outside of the light emitter and to supply required electric power to the light emitting unit. The light receiver includes: a first switching element, the first switching element serving to output a first output signal; a second switching element serving to output a second output signal; and a detection circuit. A third power supply line is provided such that one end of the third power supply line is electrically connected to the first power supply line inside the light emitter, and the other end is electrically connected to the second power supply line outside the light receiver.

Photoelectric sensor and light emitter with abnormality detection

A displacement sensor includes an emitting unit periodically emitting pulse signals; a receiving unit receiving reflection signals generated from the pulse signals and reflected by an object and outputs binary signals that indicate signal intensity of the received reflection signals; a waveform summation unit generating a summation waveform by accumulating temporal waveforms of the binary signals for the respective corresponding periods of time with reference to emission timings of the corresponding pulse signals; a distance calculation unit calculating a value that indicates a distance to the object on the basis of waveform features corresponding to waveform features of the pulse signals that appear in the summation waveform; and a reception signal amount calculation unit calculating a reception signal amount that is intensity of the reflection signals received by the receiving unit on the basis of feature amounts indicated by cumulative values that appear in the summation waveform.

Displacement sensor

The present invention achieves a sensor that can be used more efficiently than before. The sensor () includes: an operator () that accepts a mechanical operation of a user, and generates an operation input value corresponding to the operation; a communication portion () that receives a communication input value; and a CPU () that changes sensitivity of the sensor () according to a later input one of the operation input value and the communication input value.

Sensor, sensor system and measuring method

A photoelectric sensor capable of preventing a malfunction caused by mutual interference is provided. The photoelectric sensor includes: a light projecting unit that repetitively emits a set of pulse light, which follows a projected light pattern in which a light projecting period is made different by a fixed time, as signal light; a light receiving element that receives the signal light; and a light receiving controller that distinguishes a light incident state and a light blocked state based on a received light signal from the light receiving element. The light projecting unit has a first pattern having the light projecting period increased by a fixed time and a second pattern having the light projecting period reduced by a fixed time as the projected light pattern, and in the first and second patterns, a pulse indicating a shortest period is included in the light projecting period other than the shortest period.

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

A photoelectric sensor amplifies a received light intensity signal generated through light projection processing and light receiving processing, and performs detection processing using the amplified received light intensity signal. The photoelectric sensor is provided with a variable resistor that generates an adjustment command signal that changes linearly with respect to sensitivity adjustment manipulations performed by a user. Further, the sensor is provided with an amplifier including a variable gain amplifier configured such that the aforementioned adjustment command signal is inputted thereto. Further, the variable gain amplifier is adapted to convert the signal into a gain control signal that changes exponentially with respect to sensitivity adjustment manipulations and, further, is adapted to perform amplification processing using a gain according to the gain control signal.

Photoelectric sensor and method for controlling amplification of received light intensity in photoelectric sensor

Growing community of inventors

Ayabe, Japan

Ryosuke Tsuzuki