Automatic vehicle following control system

• US 6,128,559 A
• Filed: 09/24/1999
• Issued: 10/03/2000
• Est. Priority Date: 09/30/1998
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Saitou, Tooru, Hashimoto, Hideki
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Hernandez, Olga
• Application Number:
  US09/404,764
• Time in Patent Office: 375 Days
• Field of Search: 701/23, 701/200, 701/22, 701/29, 701/1, 701/301, 340/903, 340/436
• US Class Current: 701/23
• CPC Class Codes: B61L 2205/04 Satellite based navigation systems, e.g. global positioning system [GPS]
• CPC Class Codes: B61L 23/34 for indicating the distance between vehicles or trains by the transmission of signals therebetween
• CPC Class Codes: G05D 1/0295 by at least one leading vehicle of the fleet
• CPC Class Codes: G08G 1/163 involving continuous checking
• CPC Class Codes: G08G 1/22 Platooning, i.e. convoy of communicating vehicles

Abstract

When vehicles run in a platoon, a status indicative of a malfunction or the like of a following vehicle is transmitted to a leading vehicle, so that the leading vehicle can take an appropriate action. Specifically, an automatic vehicle following control system controls a plurality of unattended following vehicles, each comprising an electric vehicle, to run in tandem in follow mode to an attended leading vehicle. Each of said following vehicles has a remaining capacity detecting unit for detecting a remaining capacity of a battery on the following vehicle, and transmitting information of the detected remaining capacity via vehicle-to-vehicle antennas to the leading vehicle. The remaining capacities of the batteries on the following vehicles are displayed on a display unit of the leading vehicle. When a remaining capacity of a battery on an electric vehicle is lowered, since the maximum output power of a motor on the electric vehicle is reduced, the electric vehicle cannot run in a platoon at a high speed. If the remaining capacity of the battery on the electric vehicle is detected as being lower than a predetermined level, then the speed of the leading vehicle is automatically lowered to enable the following vehicles to run continuously in a platoon at a relatively low speed.

Claims

1. An automatic vehicle following control system comprising a leading vehicle driven by a driver and a following vehicle automatically controllable to run in follow mode to the leading vehicle,

said following vehicle comprising:

status detecting means for detecting a status of the following vehicle; and

transmitting means for transmitting the detected status of the following vehicle to said leading vehicle;

said leading vehicle comprising;

receiving means for receiving the status of the following vehicle transmitted by said transmitting means; and

indicating means for indicating a malfunction of the following vehicle if the received status of the following vehicle contains status information indicative of the malfunction.

2. An automatic vehicle following control system according to claim 1, wherein said following vehicle comprises a plurality of following vehicles running in a platoon following said leading vehicle, said indicating means comprising means for identifying and indicating at least one of said following vehicles which is suffering a malfunction.

3. An automatic vehicle following control system according to claim 1, for use as a vehicle sharing system having a limited area in which available vehicles can be used, said area having a plurality of ports for parking a plurality of vehicles, the arrangement being such that the vehicles can be automatically controlled to run in follow mode to the leading vehicle when moving from one of the ports in which more vehicles are parked to one of the ports in which fewer vehicles are parked.

4. An automatic vehicle following control system according to claim 1, wherein said leading vehicle further comprises:

speed limiting means for limiting a speed of travel of the leading vehicle if the received status of the following vehicle contains status information indicative of the malfunction.

5. An automatic vehicle following control system according to claim 4, wherein said following vehicle comprises a plurality of following vehicles running in a platoon following said leading vehicle, said indicating means comprising means for identifying and indicating at least one of said following vehicles which is suffering a malfunction.

6. An automatic vehicle following control system comprising a leading vehicle driven by a driver and a plurality of following vehicles, each comprising an electric vehicle, which are automatically controllable to run in follow mode to the leading vehicle,

each of said following vehicles comprising:

remaining capacity detecting means for detecting a remaining capacity of a battery on the following vehicle; and

transmitting means for transmitting information of the detected remaining capacity to said leading vehicle;

said leading vehicle comprising;

receiving means for receiving the information of the detected remaining capacity transmitted by the transmitting means of each of the following vehicles; and

display means for displaying the received information of the remaining capacity of the battery on each of said following vehicles.

7. An automatic vehicle following control system according to claim 6, wherein sad leading vehicle further comprises:

speed limiting means for limiting a speed of travel of the leading vehicle if the remaining capacity of the battery on at least one of the following vehicles is lower than a predetermined level.

8. An automatic vehicle following control system according to claim 6, for use as a vehicle sharing system having a limited area in which available vehicles can be used, said area having a plurality of ports for parking a plurality of vehicles, the arrangement being such that the vehicles can be automatically controlled to run in follow mode to the leading vehicle when moving from one of the ports in which more vehicles are parked to one of the ports in which fewer vehicles are parked.

9. An automatic vehicle following control system according to claim 6, wherein sad leading vehicle further comprises:

indicating means for indicating a reduction in the remaning capacity of the battery if the remaining capacity of the battery on at least one of the following vehicles is lower than a predetermined level.

10. an automatic vehicle following control system according to claim 9, wherein sad leading vehicle further comprises:

speed limiting means for limiting a speed of travel of the leading vehicle if the remaining capacity of the battery on at least one of the following vehicles is lower than a predetermined level.