Abstract: A magnetic marker is embedded in a road, and is configured to be detected by a magnetic sensor provided in a vehicle. The magnetic marker is provided with a case accommodating a magnet and a protective material covering the magnet, and an anchor that is provided protruding downward from the case and that is configured to expand in diameter in a state of being embedded in the road.

Abstract: A magnetic sensor includes a magneto-sensitive body whose electromagnetic properties change under an action of an external magnetic field, a coil disposed to obtain an induced voltage proportional to the external magnetic field, a sampler configured to sample the induced voltage generated in the coil and obtains a sampling voltage, and an automatic correction circuit configured to relatively adjust a rise timing of a magneto-sensitive body clock for driving the magneto-sensitive body and a rise timing of a sampler clock for driving the sampler according to the sampling voltage.

Abstract: In an operation system (1) for a bus (5) including a connection point database which stores identification information of a magnetic marker (10) positioned so as to correspond to a connection point (13) between a dedicated lane (111) having magnetic markers (10) laid thereon and a general lane (112), the connection point (13) is set so as to correspond to the magnetic marker (10) 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.

Abstract: A map (1) to be used by a vehicle which can measure magnetism acting from a road surface side forming a surface of a road to estimate an own vehicle position includes a structure map (M1) which represents a road structure and has position data indicating an absolute position linked to each point and a road-surface magnetic distribution (M2) which is magnetic data at each point on the road surface and has position data indicating an absolute position linked to each point. In the map (1), the structure map (M1) and the road-surface magnetic distribution (M2) are associated with each other via the position data indicating the absolute position.

Abstract: A position estimation system for a vehicle including a magnetic sensor which measures magnetism acting from a road surface side forming a surface of a traveling road to estimate an own vehicle position includes a map DB which stores a map (1) associated with a road-surface magnetic distribution (M2), which is a distribution of quantities of magnetism at respective points on the road surface, a magnetic distribution generation part which acquires magnetic measurement values from the magnetic sensor and generates a measured magnetic distribution, which is a distribution of magnetic measurement values, and a position estimation part which specifies an area corresponding to the measured magnetic distribution in the road-surface magnetic distribution (M2) associated with the map stored in the map DB and estimates the own vehicle position based on a position of the area corresponding to the measured magnetic distribution on the map.

Abstract: 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.

Abstract: According to one embodiment, a rhenium-tungsten alloy wire is a wire made of a tungsten alloy containing rhenium. The amount of NH4 at a wire surface is 10 massppm or less, and is according to a ratio of a weight of NH4 ions at a wire surface to a weight of an alloy wire (a weight of NH4 ions at a wire surface/a weight of an alloy wire). According to the embodiment, a medical needle and a probe pin include the rhenium-tungsten alloy wire according to the embodiment.

Abstract: According to one embodiment, a rhenium-tungsten alloy wire which is a wire including a tungsten alloy containing rhenium. A ratio W/Re of an atomic concentration (atm %) of tungsten (W) to an atomic concentration (atm %) of rhenium (Re) according to XPS analysis is 2.5 or more in an arbitrary measurement area of a unit area having a diameter of 50 ?m at a wire surface. A medical needle according to the embodiment includes the rhenium-tungsten alloy wire according to the embodiment.

Abstract: A vehicle system (1) switches control between a restart period after restart of a function of controlling traveling of the vehicle following a parking period during which the function is stopped, until the vehicle moves and first detects a magnetic marker and a normal travel period after the vehicle detects the magnetic marker following the restart period. In the restart period, restart control (S105) is performed in which a position of the vehicle is identified based on a position measured in the restart period to cause the vehicle to travel. In the normal travel period, normal travel control (S107) is performed in which the position of the vehicle is identified based on a position of the detected magnetic marker to cause the vehicle to travel.

Abstract: Magnetic marker detection system for a vehicle including sensor array with magnetic sensors arrayed in a width direction to detect a magnetic marker laid in a traveling road includes differential circuit that obtains a difference between magnetic measurement values for each combination of two magnetic sensors spaced with a predetermined space, arithmetic circuit that performs process for detecting a position of the magnetic marker by processing the difference for the each combination, and setting circuit that selectively sets the predetermined space for obtaining the difference between magnetic measurement values; magnetic marker detection system can detect the magnetic marker laid in the traveling road with high certainty, irrespective of variations in attachment height of the magnetic sensors on a vehicle side.

Abstract: A vehicle system includes a sensor unit including magnetic sensors for detecting a magnetic marker and non-contact displacement sensors which measure a displacement relative to a road surface where the magnetic marker is laid, a processing circuit which performs detection process for detecting the magnetic marker by processing a magnetic measurement value by the plurality of magnetic sensors, and a switching circuit which switches the detection process in accordance with displacement measurement values by the non-contact displacement sensors. By switching the detection process in accordance with the displacement measurement values by the non-contact displacement sensors, the magnetic marker can be detected with high reliability.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A vehicular orientation detection system (1) for detecting an orientation of a vehicle (5) traveling a road surface (100S) where magnetic markers (10) are laid includes sensor units (11) 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 (10) and a control unit (12) which computes a difference between lateral shift amounts measured with any one of the magnetic markers (10) by front and rear sensor units (11) positioned at two locations separated in a longitudinal direction of the vehicle (5).

Abstract: According to one embodiment, a tungsten wire includes a tungsten alloy containing rhenium. According to an EBSD analysis on a unit area, crystalline orientations having an orientation difference of 15 degrees or less from <101>, which is parallel to a wire drawing direction, account for an area ratio of 70% or more and 90% or less to a measurement field on an IPF map. The unit area is a 40 ?m×40 ?m area located within a range of 100 ?m concentrically extending from a central axis in a cross-section along a wire radial direction, which is perpendicular to the wire drawing direction.

Abstract: 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.

Abstract: A diagnostic vehicle (1) which diagnoses operation situations of magnetic markers (10) laid in or on a traveling road so as to be magnetically detectable by a vehicle includes sensor unit (11) which obtains a one-dimensional magnetic distribution by measuring a magnitude of magnetism with which any of magnetic markers (10) acts therearound, line sensor camera (13) which obtains a marker image, which is one-dimensional image information, by imaging magnetic marker (10), and diagnosing unit (15) which determines the presence or absence of a flaw in magnetic marker (10) based on a comparison between a magnetic distribution and the marker image.

Abstract: A magnetic sensor includes: a sensor head having a magnetic material; a drive unit configured to energize the sensor head; a pickup coil close to the sensor head; and an information processing unit configured to generate a bias magnetic field by energizing the pickup coil and detect a signal corresponding to an induced voltage generated in the pickup coil, in which the information processing unit generates a difference signal indicating a difference between a first signal corresponding to a first voltage generated in the pickup coil when the sensor head is in an energized state and a second signal corresponding to a second voltage generated in the pickup coil when the sensor head is in a non-energized state.

Abstract: A point cloud data acquiring system (1) is a system which acquires, as moving, point cloud data which serves as base data for a three-dimensional map representing a traveling environment of a vehicle includes range finding part (31) which acquires point cloud data representing azimuths and distances to planimetric features configuring the traveling environment, marker detecting part (2) which detects marker (10) laid in or on a traveling road of the vehicle, and a data recording part which records point cloud data acquired by range finding part (31) as linking thereto marker reference information including positional information with reference to any marker (10).