US 9,812,007 B2
Map generation system, map generation device, map generation method, and program
Tomonobu Inaba, Utsunomiya (JP); Hiromi Satou, Utsunomiya (JP); and Naoko Imai, Utsunomiya (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Appl. No. 14/780,302
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
PCT Filed Mar. 26, 2014, PCT No. PCT/JP2014/058579
§ 371(c)(1), (2) Date Sep. 25, 2015,
PCT Pub. No. WO2014/157359, PCT Pub. Date Oct. 2, 2014.
Claims priority of application No. 2013-070530 (JP), filed on Mar. 28, 2013.
Prior Publication US 2016/0078757 A1, Mar. 17, 2016
Int. Cl. G08G 1/01 (2006.01); G08G 1/056 (2006.01); G08G 1/0968 (2006.01); G08G 1/16 (2006.01); G09B 29/10 (2006.01); G09B 29/00 (2006.01); G08G 1/0967 (2006.01)
CPC G08G 1/0125 (2013.01) [G08G 1/0112 (2013.01); G08G 1/0133 (2013.01); G08G 1/0141 (2013.01); G08G 1/056 (2013.01); G08G 1/0968 (2013.01); G08G 1/096741 (2013.01); G08G 1/096783 (2013.01); G08G 1/096811 (2013.01); G08G 1/096844 (2013.01); G08G 1/16 (2013.01); G09B 29/007 (2013.01); G09B 29/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A map generation system, comprising an electronic device,
the electronic device comprising:
an extraction unit configured to collect vehicle speed information, which includes at least a speed, acceleration, and deceleration, from a vehicle and configured to extract rapid deceleration information, which includes a first location where a rapid deceleration event satisfying predetermined conditions has occurred, and a traveling direction of the vehicle at the time when the rapid deceleration event has occurred from the collected vehicle speed information;
a storage unit that stores map data;
a division unit configured to generate mesh map data by dividing the map data stored in the storage unit into a plurality of meshes in a predetermined size and a predetermined number of divisions; and
an estimation unit configured to estimate a location that requires caution when the vehicle travels therethrough, as a caution-required place, based on the rapid deceleration information extracted by the extraction unit and the mesh map data generated by the division unit,
wherein intersection location information indicating a location of an intersection is included in the map data,
the estimation unit estimates the location of the intersection on the map data present in a front mesh in front of the mesh which includes the first location indicated by the rapid deceleration information, as the caution-required place,
the vehicle speed information is information including vehicle speed information accumulated for a predetermined period of time, and
the extraction unit levels the vehicle speed information in the predetermined period of time.