Patent ID: 8437939
Filing Date: 2013-05-07
Classification: B60W,G01S,G08G

Abstract:
1. A road information detecting device mounted on a vehicle, the device comprising: a processor; a memory accessible by the processor; a representative point calculation module that calculates a representative point employed by the processor that corresponds to geometry of a road on which the vehicle is traveling, based on a received signal obtained by receiving a wave transmitted from a transmission antenna and reflected by a target and based on positional information on a stationary target located in a traveling direction of the vehicle; a corresponding straight line calculation module that calculates at least one of a left side corresponding straight line that corresponds to a left side edge of the road and extends in the traveling direction of the vehicle and a right side corresponding straight line that corresponds to a right side edge of the road and extends in the traveling direction of the vehicle employed by the processor, based on positional information on a plurality of representative points detected by the representative point calculation module; a reference corresponding straight line setting module that sets, among the corresponding straight lines calculated by the corresponding straight line calculation module, one corresponding straight line employed by the processor that has a most distal end more proximal to the vehicle than that of the other corresponding straight line as a reference corresponding straight line; and a curve information detecting module responsive to the left side corresponding straight line and the right side corresponding straight line being calculated by the corresponding straight line calculation module, that detects information on curving geometry of the road employed by the processor based on positional information on a representative point calculated in a process targeted area by the representative point calculation module, the process targeted area being an area that is sandwiched between the left side corresponding straight line and the right side corresponding straight line and extends in the traveling direction of the vehicle and is also distal to the most distal end of the reference corresponding straight line.