Estimate position of own car to within
5 mm at any time, anywhere.
High-precision, highly reliable autonomous driving
achieved by GMPS (Magnetic Positioning System)
Aichi Steel's GMPS (Global Magnetic Positioning System) is a magnetic vehicle position detection system that detects weak magnetic signals emitted by magnetic markers installed on the ground with an ultra-sensitive magnetic sensor, "MI Sensor", mounted on the sensor unit, estimates the position of the vehicle with high accuracy, and supports advanced vehicle control such as automated driving.
In tunnels and underground where GPS does not reach, and in situations such as snow accumulation, fog, and backlight where optical devices struggle, the position of the car is identified at +/-5 mm or less to support safe autonomous driving.
GMPS Technology Principle of Operation
An autonomous driving support system that estimates the position of a car with high accuracy from the weak magnetic force of a magnetic marker laid along a lane using the MI sensor module mounted on the bottom of the car.
The position of the car (X-Y coordinates) is accurately identified by the signals from the magnetic markers with RF-ID on the road surface.
It tracks at speeds of up to 200km/hour.
Applications Field of activity
GMPS can be used in a variety of environments with a single system.
Autonomous AGV operation in airports and harbors is possible by placing markers in a grid shape.
Lower costs can be achieved by switching subway and LRT to buses.
Fully automatic operation is also easy by introducing from docking and by-passing assist.
Even in a state where GPS satellites cannot be supplemented or in built-up streets where GPS multipathing occurs, accurate automotive positions can be identified from magnetic markers.
Valet parking becomes easier even in indoor parking lots where GPS signals do not reach. The vehicle moves tracing the specified ID number of the magnetic markers.
Magnetic markers can reliably locate your car even in environments with snow or fallen leaves that make it impossible to read white lines. You can also identify your car's position in mist where Lidar doesn't work precisely.
This facilitates the automatic operation of distribution vehicles on the factory premises.
Accurate automotive position estimation is possible even in tunnels or under elevated tracks where GPS signals cannot be obtained.
Introductory video Video Introduction
Demonstration Demonstration experiment
The effectiveness of GMPS has been confirmed by conducting demonstration tests on public roads around the country with various partners, including the Ministry of Land, Infrastructure and Transport.
■ List of demonstration tests
#15November 2020 Chubu International Airport Island, Tokoname-shi, Aichi [Sponsor] Aichi Prefecture
Drive under railway bridges or terminal buildings where GPS cannot reach.
#14July 2020 Newtown, Mita-shi, Hyogo [Sponsor] the Ministry of Economy, Trade and Industry
Running with 2800 magnetic markers over almost the whole course (6km)
#13June 2020 Haneda Airport, Ota-ku, Tokyo [Sponsor] Cabinet Office
Stable running at a maximum speed of 60km/h while performing docking control, lane change, and right/left turn
#12December 2019 Kesennuma Line, Kesennuma City, Miyagi Prefecture BRT Yanagizu-Yokoyama section [Sponsor] JR East
Large buses run stably at a maximum speed of 60km/h
#11December 2019 Shibukawa City, Gunma Prefecture [Sponsor] Gunma Prefecture
Traveling while performing roadside-to-vehicle communication in which the vehicle receives signal information, etc. from magnetic markers installed on the road surface.
#10November 2019 Onagawa-cho, Oshika-gun, Miyagi Prefecture [Sponsor] Miyagi Prefecture
Ultra-compact electric vehicles for sharing are returned to the station by unmanned driving.
#9February 2019 Tama New Town, Tama-shi, Tokyo [Sponsor] Tokyo
Driving public roads surrounded by over bridges and street trees where GPS cannot reach.
#8January 2019 Inside Haneda Airport Restriction Area, Ota-ku, Tokyo [Sponsor] MLIT
Run below the boarding bridges where GPS does not reach in airport restricted areas.
#7December 2018 BRT Takekoma Station, Ofunato Line, Rikuzentakada City, Iwate Prefecture [Sponsor] JR East
Carried out alternate passage with oncoming vehicles on roads exclusively for buses and docking control.
#6October 2018 Part of Hitachi BRT route in Hitachi City, Ibaraki [Sponsor] Ministry of Land, Infrastructure, Transport and Tourism and Ministry of Economy, Trade and Industry
Run on exclusive bus roads using abandoned rail lines and public roads
#5April 2018 Kitakyushu Scientific Research City, Kitakyushu City, Fukuoka Prefecture [Sponsor] Kitakyushu City
Stable running at a maximum speed of 40km/h and control adjustment at the intersection left-turn.
#4February 2018 Minami Alps Mura Haseya, a station in Ina City, Nagano Prefecture [Sponsor] Ministry of Land, Infrastructure, Transport and Tourism
Traveling in tunnels where GPS signals do not reach or narrow dog legs with a road width of 4.5m
#3December 2017 "Kosmall Daiki" in Oki-cho, Hokkaido [Sponsor] Ministry of Land, Infrastructure, Transport and Tourism
Drive in snow where reliability of on-board cameras is not sufficient.
#2December 2017 Ginowan City, Okinawa Prefecture, Kita-Nakajo Village, Okinawa Prefecture [Sponsor] Cabinet Office
Execute docking control that stops at bus stops with precise width adjustment.
#1November 2017 Station in Higashi-Omie City, Shiga Prefecture, "Okunagagenji Keirin no Sato" [Sponsor] Ministry of Land, Infrastructure, Transport and Tourism
Drive in mountainous areas where GPS signals do not reach.
Introductory LeafletPDF Download