Kabushiki Kaisha Tokai Rika Denki Seisakusho

Nagoya Institute of Technology

Kabushiki Kaisha Tokai Rika Denki

Kenichi Koga

Tatsuya Koike

Satoshi Mori

Yoshiki Oishi

Kazuki Naiki

Kento Kataoka

Nobuyoshi Kikuma

Koji Inafune

Masanori Kosugi

Daisuke Kawamura

Hiroaki Iwashita

Takahiro Shimizu

Yuuki Nawa

Minoru Otake

Tetsuya Kawamura

Tetsuya Kobayashi

Yoshiyuki Oya

There is provided an antenna that transmits and receives a wireless signal compliant with a designated communication standard, the antenna comprising: a metal plate that is disposed on a circuit board; a first supporting section that supports the metal plate and connects the metal plate to a feed point formed on the circuit board; at least one second supporting section that supports the metal plate and connects the metal plate to a ground plane formed on the circuit board; and a plurality of extension sections that extend from an outer edge of the metal plate toward a direction of the circuit board but have no contact with the circuit board; wherein the plurality of extension sections operate as perturbation elements that form two excitation modes, the two excitation modes spatially intersecting with one other.

Antenna

A communication device comprising: a wireless communication section configured to wirelessly receive a signal from another communication device; and a control section configured to estimate a reception time of the second signal based on the expanded signal matrix that minimizes the predetermined norm, wherein the control section executes the iterative calculation separately at a plurality of stages, sets a value of the regularization parameter used for the iterative calculation at or after a second stage of the plurality of stages to a value of the regularization parameter or more used for the iterative calculation at a previous stage, and changes the value of the regularization parameter based on a reception status of the second signal during the iterative calculation at or after the second stage.

Communication device, information processing method, and non-transitory computer-readable storage medium

There are provided a control device, a control system, and a program that can improve position estimation precision. A control device includes a control section configured to obtain a distance measurement value, and estimate a relative position of the position changeable type communication device with respect to a target space based on the distance measurement value, the distance measurement value being obtained when a position fixed type communication device and the position changeable type communication device perform wireless communication, and indicating a distance between the position fixed type communication device and the position changeable type communication device, the position fixed type communication device being fixed to a position that is inside the target space, and is closer to a floor part than to a ceiling part of the target space, and the relative position of the position changeable type communication device with respect to the target space being changeable.

Control device, control system, and program

There is provided a metal plate antenna transmitting and receiving wireless signals conforming to a prescribed communication standard, wherein an antenna width is designed to satisfy radiation resistance achieving a prescribed standing wave ratio in a resonant mode in which a loop length of the metal plate antenna is 1.5 wavelength of a wireless signal conforming to the prescribed communication standard.

Metal plate antenna and antenna device

A control device comprising: a control unit that applies a weight parameter based on a reliability parameter that is an index indicating a degree of whether or not a signal is appropriate as a processing target for estimating a positional relationship between the communication device and the other communication device calculated on the basis of a signal received from the other communication device by the communication device to a provisional positional relationship between at least two of the communication devices and the other communication device estimated on the basis of the signals transmitted and received between the communication device and the other communication device, and performs control for estimating the positional relationship between the communication device and the other communication device.

Control device, system, and control method

To estimate a positional relationship between devices having transmitted and received signals with higher accuracy. A control device includes a control unit that compares reliability parameters that are indexes indicating a degree of whether or not a signal is appropriate as a processing target for estimating a positional relationship between each of the plurality of communication devices and the other communication device, calculated on the basis of the signals received from the other communication device by the communication device, and performs control for estimating the positional relationship on the basis of a signal transmitted and received between the communication device that has received a signal that is more appropriate as a processing target for estimating the positional relationship and the other communication device.

A control device includes a control section configured to obtain a distance measurement value, and estimate a relative position of a position changeable type communication device with respect to a target space based on the distance measurement value, the distance measurement value being obtained when at least one of a plurality of position fixed type communication devices and the position changeable type communication device perform wireless communication, and indicating a distance between the at least one position fixed type communication device and the position changeable type communication device, the plurality of position fixed type communication devices including a first position fixed type communication device that is fixed inside a target space and to at least one part included in the target space, and a second position fixed type communication device that is fixed to a part different from the at least one part.

Power consumption required for UWB communication is effectively suppressed. A control device includes: at least one BLE communication section configured to perform BLE communication with another communication device, the BLE communication being wireless communication compliant with BLE communication standards; at least one UWB communication section configured to perform UWB communication with the another communication device, the UWB communication being wireless communication compliant with UWB communication standards; and a control section configured to control the BLE communication of the BLE communication section and the UWB communication of the UWB communication section, and the control section performs control to start the UWB communication in a case where the BLE communication has been established.

Control device, non-transitory storage medium, and system

To estimate a positional relationship between devices having transmitted and received signals with higher accuracy. A control device comprising:

To provide a novel and improved communication device, control device, program, and system capable of estimating a positional relation between devices with higher accuracy. A communication device includes a control unit configured to control transmission and reception of signals by at least first and second antennas in conformity with a specific communication standard. The control unit controls a mode for transmission and reception of the signals by the first and second antennas in accordance with the signals transmitted to and received from another communication device.

Communication device, control device, storage medium, and system for estimating a positional relation between devices

To provide a novel and improved control device and storage medium capable of performing control based on a positional relation with higher accuracy. A control device includes a control unit configured to perform control based on a presence area of a first communication device determined using a signal transmitted and received between the first communication device and at least one second communication device. The control unit performs control related to an operation of a controlled device in accordance with a second presence area when a first presence area determined based on a coordinate position of the first communication device on an arbitrary coordinate system associating the first communication device with the second communication device is inconsistent with the second presence area determined based on a distance between the first and second communication devices.

Control device and storage medium

To provide a novel and improved control device and storage medium capable of performing control based on a positional relation with higher accuracy. A control device includes a control unit configured to perform control based on a presence area of a second communication device estimated using signals transmitted and received between a first communication device and the second communication device. The control unit performs control based on a presence area estimated most often among a plurality of presence areas estimated from signals transmitted and received a plurality of times during a certain time length.

A position detection system includes a measurement unit that obtains a measurement value related to transmission and reception of radio waves from when the radio waves are transmitted from one of first and second communication devices to the other one of the first and second communication devices to when the one of the first and second communication devices receives a response to the radio waves to detect a positional relationship of the first and second communication devices. The measurement unit obtains multiple measurement values by performing communication to obtain the measurement value a multiple number of times in which a parameter of the communication is changed.

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Aichi, Japan

Kenichi Koga