Processor and processing method for rider-assistance system of straddle-type vehicle, rider-assistance system of straddle-type vehicle, and straddle-type vehicle

A rider-assistance system (1) of a straddle-type vehicle (100) comprising:

• a processor (20) having
• an acquisition section (21) that acquires surrounding environment information about the straddle-type vehicle (100);
• a determination section (22) that determines necessity of assistance operation executed by the rider-assistance system (1) to assist with a rider's operation on the basis of the surrounding environment information acquired by the acquisition section (21);
• and
• a control section (23) that makes an execution device (P) execute the assistance operation in the case where the determination section (22) determines that the assistance operation is necessary, wherein
• the surrounding environment information includes information on surrounding environment behind the straddle-type vehicle (100), and
• the determination section (22) determines the necessity of the assistance operation by using:
• a collision index value (I) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a collision possibility of a following vehicle against the traveling straddle-type vehicle (100);
• and
• a stability index value (J) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a stability degree of a relative distance (Dr) of the following vehicle to the traveling straddle-type vehicle (100).

A straddle-type vehicle (100) comprising:

• a rider-assistance system (1) that includes a processor (20) having
• an acquisition section (21) that acquires surrounding environment information about the straddle-type vehicle (100);
• a determination section (22) that determines necessity of assistance operation executed by the rider-assistance system (1) to assist with a rider's operation on the basis of the surrounding environment information acquired by the acquisition section (21);
• and
• a control section (23) that makes an execution device (P) execute the assistance operation in the case where the determination section (22) determines that the assistance operation is necessary, wherein
• the surrounding environment information includes information on surrounding environment behind the straddle-type vehicle (100), and
• the determination section (22) determines the necessity of the assistance operation by using:
• a collision index value (I) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a collision possibility of a following vehicle against the traveling straddle-type vehicle (100);
• and
• a stability index value (J) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a stability degree of a relative distance (Dr) of the following vehicle to the traveling straddle-type vehicle (100).

A processing method for a rider-assistance system (1) of a straddle-type vehicle (100), the processing method comprising:

• an acquisition step (S101) of acquiring surrounding environment information about the straddle-type vehicle (100) by an acquisition section (21) of a processor (20) for the rider-assistance system (1);
• a determination step (S102) of determining necessity of assistance operation, which is executed by the rider-assistance system (1), by a determination section (22) of the processor (20) to assist with a rider's operation on the basis of the surrounding environment information acquired by the acquisition section (21);
• and
• a control step (S103) of making an execution device (P) execute the assistance operation by a control section (23) of the processor (20) in the case where the determination section (22) determines that the assistance operation is necessary, wherein
• the surrounding environment information includes information on surrounding environment behind the straddle-type vehicle (100), and
• in the determination step (S102), the determination section (22) determines the necessity of the assistance operation by using:
• a collision index value (I) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a collision possibility of a following vehicle against the traveling straddle-type vehicle (100);
• and
• a stability index value (J) that is an index value depending on the information on the surrounding environment at the rear and is an index value of a stability degree of a relative distance (Dr) of the following vehicle to the traveling straddle-type vehicle (100).