METHOD AND DEVICE FOR MAPPING OF OBSTACLE DETECTION OF UNMANNED VEHICLE

• Main Authors: NISHIJIMA AKIJI, OKAWA YUKIO, SUDO TSUGIO
• Format: Patent
• Language: English
• Published: 05.09.1997
• Edition: 6
• Subjects: ADVERTISING; ANALOGOUS ARRANGEMENTS USING OTHER WAVES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONTROLLING; CRYPTOGRAPHY; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; GLOBES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PERFORMING OPERATIONS; PHYSICS; PLANETARIA; RADIO DIRECTION-FINDING; RADIO NAVIGATION; REGULATING; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; SEALS; SIGNALLING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TESTING; TRAFFIC CONTROL SYSTEMS; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To make it possible to detect an obstacle without placing the arithmetic load of a controller on a computer and also perform the obstacle detection without lowering the detection precision. SOLUTION: A travel road surface is divided into many squares at every specific distance by straight lines parallel to coordinate axes (x) and (y), squares where a travel course 6 passes through are stored, and when this device decides that an obstacle is present on the travel course 6 when a square where an obstacle detected during the automatic travel of the unmanned vehicle along the travel course 6 is present matches one of the stored squares, the respective squares of a square map for obstacle detection corresponding to a curve section of the travel course 6 is divided smaller than the squares in a straight section if the travel course 6 is curved.