Aichi Steel Corporation

Vodafone K.k.

Aichi Micro Intelligent Corporation

Advanced Smart Mobility Co., Ltd.

Tomohiko Nagao

Michiharu Yamamoto

Hitoshi Aoyama

Yoshinobu Honkura

Shin Takeuchi

Masaki Mori

Koei Gemba

Hideto Takeishi

Taizo Nishiyama

Masayoshi Fujiya

Jun Yamazaki

Hirohisa Kusuda

Takashi Katayama

Yasuhiro Nishide

Daisuke Tsujino

Kazumasa Sumi

Takeshi Kawano

Toshiro Matsumura

Eiji Kako

Masaaki Nakada

Ryusuke Yamashita

Ryota Fujimura

Takashi Shimoto

Keiji Aoki

Yoshihiro Iwanaga

Yoshiaki Kohtani

Jun Nakamura

Aoki Keiji

In a marker detection system for a vehicle including a magnetic sensor to detect a magnetic marker laid in a road surface, the magnetic sensor can measures, for each axis, magnitudes of magnetic components acting along an axis in a vertical direction and an axis in a forwarding direction, and a detection unit identifies a candidate zone to which a possibility that the magnetic marker belongs is high, based on a change in a forwarding direction of the vehicle of a magnetic measurement value along any of the axes and determines whether the magnetic marker has been detected in accordance with a degree of synchronization between a first signal indicating a change of a magnetic measurement value regarding one axis in the candidate zone and a second signal indicating a change of a magnetic measurement value regarding the other axis in the candidate zone.

Magnetic marker detection method and system

A patrol robot including a plurality of magnetic sensors for detecting a magnetic marker laid on a traveling road has at least two or more magnetic sensors arrayed on a sensor array line linearly extending along any direction. In the patrol robot, two sensor array lines are formed, and since at least any one sensor array line can cross with respect to a relative moving direction of the magnetic marker with a movement of the patrol robot, the magnetic marker can be detected with high reliability, irrespective of the moving mode.

System and magnetic marker detection method

In a designing method for setting a specification of an individual-piece magnetic marker to be laid on a road surface, a specification of the magnetic marker is appropriately set based on a correlation coefficient between a first distribution of strengths of magnetism in a forwarding direction acting on a position at a minimum attachment height in a range of attachment heights of the magnetic sensor assumed in respective vehicles and a second distribution representing a distribution of strengths of magnetism in the forwarding direction acting on the position at the minimum attachment height when magnetism is assumed to be generated from a one-point magnetism generation source.

Magnetic marker system and magnetic marker system designing method

In an operation system () for a bus () including a connection point database which stores identification information of a magnetic marker () positioned so as to correspond to a connection point () between a dedicated lane () having magnetic markers () laid thereon and a general lane (), the connection point () is set so as to correspond to the magnetic marker () according to identification information stored in a connection point database, thereby allowing flexibility in changing a route to be improved in the operation system which causes a vehicle to operate along a route defined in advance.

Operation system and operation system control method

An automatic parking system which controls a vehicle so as to cause the vehicle to be moved to a parking place and accommodated in a parking frame provided in the parking place includes a route where magnetic marker is laid so as to be detectable by using a magnetic sensor array provided to the vehicle, RFID tag providing tag information capable of identifying laying position of the magnetic marker, and a control server device which identifies a vehicle position based on the laying positions of the magnetic markers, allowing highly-accurate identification of the position of the vehicle to be forwarded and allowing operation with high reliability.

Automatic parking system

A marker detection device which detects a magnetic marker laid in a road by using a sensor unit in which a plurality of combinations of a magnetic sensor and a magnetic-field generation coil are arranged includes a storage part which stores characteristic information of each magnetic-field generation coil, an estimation part which estimates a magnetic differential value acting on the magnetic sensor due to a current differential value acting on the magnetic-field generation coil by referring to the characteristic information of each magnetic-field generation coil, and a calibration part which calibrates each magnetic sensor so as to enhance uniformity in sensitivity, which is a ratio between an output differential value of the magnetic sensor in accordance with a change of a current by the current differential value acting on the magnetic-field generation coil and the estimated magnetic differential value.

Marker detection system and method of operating marker detection system

A vehicular orientation detection system () for detecting an orientation of a vehicle () traveling a road surface (S) where magnetic markers () are laid includes sensor units () which each include a plurality of magnetic sensors arrayed in a vehicle width direction and measure a lateral shift amount with respect to the magnetic markers () and a control unit () which computes a difference between lateral shift amounts measured with any one of the magnetic markers () by front and rear sensor units () positioned at two locations separated in a longitudinal direction of the vehicle ().

Vehicular orientation detection system

Provided is a driving assistance system using a magnetic marker capable of providing more pieces of information. In the driving assistance system for assisting driving of a vehicle, a magnetic marker () including a magnet sheet () serving as a magnetism generating unit which generates a magnetic field and also an RFID tag () as an information providing unit which provides information to a vehicle side is laid on a travelling road of the vehicle, and the vehicle includes a magnetic sensor serving as a magnetism detecting unit which magnetically detects the magnetic marker () and also a tag reader as an information acquiring unit which acquires the information provided by the RFID tag () included in the magnetic marker ().

Magnetic marker and driving assistance system

A vehicle including a magnetic detecting part for detecting a magnetic marker disposed in a road is configured to acquire marker state information indicating the state of the magnetic marker from an external server apparatus via wireless communication and diagnose the state of the magnetic detecting part by using a result of detection of the magnetic marker in which the state of the magnetic marker indicated by the marker state information is good, thereby allowing inspection cost and cost of maintenance of the magnetic detecting part for detecting the magnetic marker to be suppressed.

Vehicle and vehicular diagnostic system

In a magnetic marker system including a magnetic marker disposed in a travel environment so as to be detectable by a magnetic sensor attached to a vehicle and a server apparatus which acquires detection information of the magnetic marker from each vehicle, the detection information uploaded from a vehicle side to the server apparatus includes marker information, which is identification information of a corresponding magnetic marker, and the server apparatus estimates the state of the magnetic marker based on the detection information from each vehicle.

Magnetic marker system

A sheet-shaped magnetic marker to be laid on a road surface so as to be able to be detected by a magnetic sensor attached to a vehicle to achieve assist for driving operation of the vehicle by a driver or control on a vehicle side to achieve automatic driving independently from operation of the driver has a magnet sheet () as a magnetism generation source and a wireless tag () which outputs information via wireless communication to the vehicle side. In the magnetic marker, the wireless tag () is interposed between a sheet (A) and a sheet (B) configuring the magnet sheet (), and the entire wireless tag () is accommodated inside the magnet sheet ().

Magnetic marker, and method for manufacturing magnetic marker

A vehicular system where a vehicle moves in a traveling area in which magnetic markers are arranged so that magnetic polarities form a predetermined pattern and a wireless tag is annexed correspondingly to some of the magnetic markers, the wireless tag outputting, by wireless communication, tag information allowing a position of the magnetic marker to be identified, includes a first position identifying part which identifies a vehicle position where the vehicle is located based on the position of the magnetic marker identified by using the tag information and a second position identifying part which identifies, on a route after the vehicle passes over the magnetic marker serving as a reference when the first position identifying part identifies the vehicle position, a magnetic marker newly detected by the vehicle based on detection history of magnetic markers and identifies the vehicle position based on the position of the identified magnetic marker.

Vehicular system

A driving support system including an information acquiring part which acquires, from a vehicle side detecting a magnetic marker laid in a road and capable of acquiring marker identification information for identifying the magnetic marker detected, upload information including the marker identification information, an information providing part which provides the vehicle side as a transmission source of the upload information with support information, a configuration which provides information acquisition right which is a right to receive the support information to the vehicle, and a transmission source management area for registering the identification information of the vehicle as a provision destination of the support information by recording the identification information of the vehicle. The identification information of the vehicle is recorded in the transmission source management area and the information acquisition right is granted to the vehicle when the information acquiring part acquire the upload information.

Driving support system

In a method of calibrating a gyro sensor mounted on a vehicle for measuring an angular velocity in a rotating direction generated about an axis of a vertical direction, a lateral shift amount detection process of detecting lateral shift amounts of the vehicle with respect to magnetic markers laid in a road, an azimuth estimation process of estimating, when the vehicle passes over a laying location where two magnetic markers are laid, an azimuth of the vehicle by a calculation process with the lateral shift amounts with respect to the two magnetic markers taken as input values, and a calibration process of calibrating the gyro sensor by using the azimuth of the vehicle estimated by the azimuth estimation process, are performed.

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Tokai, Japan

Tomohiko Nagao