Omron Corporation

Shoichi Ohnaka

Ryosuke Tsuzuki

Yusuke Iida

Koyo Ozaki

Koji Iguchi

Osamu Harada

Kiyoshi Imai

Hiroyuki Tsuchida

Toshiyuki Ozaki

Ryota Hasegawa

Hikaru Arita

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 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

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.

Growing community of inventors

Kameoka, Japan

Shoichi Ohnaka