Aichi Steel Corporation

Masaaki Nakada

Michiharu Yamamoto

Tomohiko Nagao

Ryota Fujimura

Ryuji Kambara

Masahiko Fukasawa

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 is divided into a plurality of regions in a matrix shape by a cut line (C) cutting a magnet sheet () and a nonskid layer (), with an adhesive layer being left. Thus, if peeling partially occurs, a region including the peeled part can be isolated, and expansion of peeling can be prevented.

Magnetic marker

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 magnetic field generating device includes a triaxial Helmholtz coil, amounting tableon which a portable deviceis mounted, a current supplying partand a controlling part. The current supplying partsupplies current I to individual three monoaxial Helmholtz coilswhich construct the triaxial Helmholtz coil. The controlling partchanges the current flowing through the individual monoaxial Helmholtz coilsin such a manner that a synthetic magnetic field of a magnetic field generated within the triaxial Helmholtz coilby the current I and an external magnetic field which acts from the outside into the triaxial Helmholtz coilacts on a triaxial magnetic sensorwithin the portable devicemounted on the mounting tablefrom a plurality of predetermined directions.

Growing community of inventors

Aichi, Japan

Masaaki Nakada