Control device for starting motion of mobile body

• US 7,278,505 B2
• Filed: 02/06/2006
• Issued: 10/09/2007
• Est. Priority Date: 03/15/2005
• Status: Expired due to Fees

• Current Assignee: Omron Corporation
• Original Assignee: Omron Corporation
• Inventors: Ando, Tanichi, Fujioka, Ryoji
• Primary Examiner(s): Dickson; Paul N.
• Assistant Examiner(s): AVERY, BRIDGET D
• Application Number:
  US11/348,735
• Publication Number:
  US 20060207818A1
• Time in Patent Office: 610 Days
• Field of Search: 180/167, 180/169, 180/170, 180/171, 180/271, 180/272, 340/435, 340/439, 701/301, 701/70, 701/96, 701/97
• US Class Current: 180/170
• CPC Class Codes: B60K 2360/179 Distances to obstacles or vehicles
• CPC Class Codes: B60K 2360/21 using cameras
• CPC Class Codes: B60K 35/28 characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
• CPC Class Codes: B60T 17/221 Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems hydraulic pressure systems in general F15B19/00, F15B21/04; testing structures or apparatus G01M
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 30/18027 Drive off, accelerating from standstill
• CPC Class Codes: G01S 17/86 Combinations of lidar systems with systems other than lidar, radar or sonar, e.g. with direction finders
• CPC Class Codes: G01S 17/931 of land vehicles
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A control device is mounted to one'"'"'s own mobile body such as a vehicle for controlling its starting motion. A distance measuring part measures the distance to a front going vehicle and a speed control part controls the speed of the own vehicle such that the distance to the front going vehicle will be constant based on the measured distance. A stop control part serves to detect stopping of the front going vehicle and generates a stop control signal for the own vehicle. A start control part serves to detect a start of said front going mobile body and generates a start control signal for the own vehicle. An image-taking device serves to obtain an image of the front when the front going vehicle stops and another image when it starts again. The own vehicle is inhibited from automatically starting if these two images do not match.

Claims

1. A control device for starting motion of an own mobile body, said control device comprising:

a distance measuring part for measuring distance to a front going mobile body;

a speed control part for controlling the speed of said own mobile body such that distance to said front going mobile body will be constant based on said measured distance measured by said distance measuring part;

a stop control part for detecting stopping of said front going mobile body based on said measured distance measured by said distance measuring part and generating a stop control signal for said own mobile body based on the detecting of the stopping of said front going mobile body;

a start control part for detecting a start of said front going mobile body based on said measured distance measured by said distance measuring part and generating a start control signal for said own mobile body based on the detecting of the start of said front going mobile body; and

an image-taking device for taking a first group of images of the front of said own mobile body until immediately after said stop control part detects the stopping of said front going mobile body and a second group of images of the front of said own mobile body when said start control part detects the start of said front going mobile body, a first image being selected from said first group of images and a second image being selected from said second group of images;

wherein said start control part serves to inhibit said start control signal by concluding that there is an object in front of said own mobile body if said first image and said second image do not match.

2. The control device of claim 1 wherein said image-taking device serves to take images of the road surface in front of said own mobile body.

3. The control device of claim 1 further comprising an illuminator that illuminates the front of said own mobile body when said image-taking device takes an image of said front of said own mobile body.

4. The control device of claim 1 wherein said image-taking device serves to take a third image of the front of said own mobile body when a specified length of time has passed since said start control signal is inhibited, and wherein said start control part serves to remove the inhibition of said start control signal if said first image and said third image match.

5. The control device of claim 2 wherein said image-taking device serves to take a third image of the front of said own mobile body when a specified length of time has passed since said start control signal is inhibited, and wherein said start control part serves to remove the inhibition of said start control signal if said first image and said third image match.

6. The control device of claim 3 wherein said image-taking device serves to take a third image of the front of said own mobile body when a specified length of time has passed since said start control signal is inhibited, and wherein said start control part serves to remove the inhibition of said start control signal if said first image and said third image match.