Omron Corporation

Kosuke Hayama

Keisuke Saito

Takehiro Kawai

Hideyuki Ohara

Ryota Yamada

Hajime Umeki

Manh Tai Nguyen

Yui Ishida

Daichi Ueki

Hisashi Ozawa

A wireless communication control system includes a first radio having a directional antenna, a second radio, a directivity control unit controlling the directivity of the directional antenna, and a directivity information storage unit storing directivity information relating to a directivity, the directivity information being applied to the directional antenna in relation to wireless communication between the first and second radios in accordance with a plurality of change patterns indicating a temporal change in a received signal intensity. The directivity control unit acquires a temporal change in a received signal intensity during wireless communication between the first and second radios, selects, from among pieces of the directivity information stored in the directivity information storage unit, directivity information corresponding to the change pattern corresponding to the temporal change in the received signal intensity, applies the selected directivity information, and executes wireless communication between the first and second radios.

Wireless communication control system, wireless communication control apparatus, method for controlling wireless communication, method for producing directivity information, and radio

A sensor module that transmits at a predetermined transmission interval, via a network, data obtained by measurement to an externally installed information processing device sets, together with a nearby sensor module, a predetermined module group in which a plurality of sensor modules for transmitting measurement data according to data processing in the information processing device are put together. Then, together with the nearby sensor modules, one sensor module among the predetermined module group is set as a reference sensor module for which a transmission interval is maintained at a predetermined transmission interval, and transmission intervals of measurement data of sensor modules other than the reference sensor module are changed to a prolonged transmission interval that is longer than the predetermined transmission interval. With this, a reduction in power consumption is realized as much as possible in the sensor module that measures environmental parameters and transmits to the information processing device.

Sensor module, sensor network system, data transmission method, data transmission program, and data collection method in sensor network system

A transmission controllerB is configured to transmit an R/W request signal for requesting transmission of a tag response signal to a RFID tagtwice. At this time, a frequency controllerA controls a PLL sectionA to transmit the R/W request signal via different carrier frequencies. A phase information acquirerA detects a phase change amount of the tag response signal that is transmitted via different carrier frequencies. A distance calculatorB calculates the distance between the reader/writerand the RFID tagon the basis of the phase change amount.

Distance measuring apparatus, distance measuring method, reflector, and communication system

Distance measuring apparatus, distance measuring method, reflector and communication system

An antenna for an RFID tag includes each power feeding partsthat is formed of a conductor, meandering partsandthat are formed of conductors shaped as a pair of meandering lines, connected to the power feeding parts, and extend from the power feeding partstoward both ends of the power feeding parts, respectively, a pair of radiating partsandthat are formed of conductors and connected to outer ends of the pair of meandering partsand, respectively. The meandering partsandinclude a plurality of sides arranged in a longitudinal direction where the meandering partsandextend. Further, the lengths of portions, where the ends of the radiating partsandfacing the meandering partsandface the sides closest to the radiating partsandamong the plurality of sides of the meandering partsandin a direction orthogonal to the longitudinal direction, are smaller than the widths of the widest portions of the radiating parts.

Antenna and RFID tag

Growing community of inventors

Kyoto, Japan

Kosuke Hayama