DIGITAL CAMERA REAR-VIEW SYSTEM

• US 20110018699A1
• Filed: 07/22/2009
• Published: 01/27/2011
• Est. Priority Date: 07/22/2009
• Status: Active Grant

• Current Assignee: International Truck Intellectual Property Co. LLC (Volkswagen AG)
• Original Assignee: International Truck Intellectual Property Co. LLC (Volkswagen AG)
• Inventors: Chen, Cheng, Wagner, Gary, Pan, Fong-Ioon
• Granted Patent: US 8,120,476 B2
• Time in Patent Office: Days
• US Class Current: 340/435
• CPC Class Codes: B60Q 9/008 for anti-collision purposes
• CPC Class Codes: B60R 1/00 Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
• CPC Class Codes: B60R 1/26 to the rear of the vehicle
• CPC Class Codes: B60R 1/30 providing vision in the non-visible spectrum, e.g. night or infrared vision
• CPC Class Codes: B60R 2300/103 using camera systems provided with artificial illumination device, e.g. IR light source
• CPC Class Codes: B60R 2300/105 using multiple cameras
• CPC Class Codes: B60R 2300/302 combining image information with GPS information or vehicle data, e.g. vehicle speed, gyro, steering angle data
• CPC Class Codes: B60R 2300/802 for monitoring and displaying vehicle exterior blind spot views
• CPC Class Codes: B60R 2300/8046 for replacing a rear-view mirror system
• CPC Class Codes: B62D 15/0265 Automatic obstacle avoidance by steering
• CPC Class Codes: B62D 15/029 Steering assistants using warnings or proposing actions to the driver without influencing the steering system

Abstract

A rear-view system for a vehicle has a camera disposed on the vehicle. An electronic control unit receives and processes the image information from the camera. A display displays the processed image information from the electronic control unit. An alarm is operated by the electronic control unit. The electronic control unit is used to detect an object from the processed image information. If the distance between the vehicle and the object is less than a predetermined distance, the electronic control unit will activate the alarm.

Claims

1. A rear-view system for a vehicle having a first side and a second side, the rear-view system comprising:

a first camera disposed at the first side vehicle, the first camera generating image information;

an electronic control unit receiving and processing the image information from the first camera;

a display displaying processed image information from the electronic control unit;

an alarm operatively connected with and activatable by the electronic control unit; and

wherein the electronic control unit activates the alarm when the electronic control unit detects an object from the processed image information, and when distance between the vehicle and the object is less than a predetermined distance.

2. The rear-view system of claim 1 further comprising:

a second camera disposed at the second side of the vehicle.

3. The rear-view system of claim 1 wherein the first camera is a digital camera imaging both visible light and infrared light.

4. The rear-view system of claim 1 further comprising:

a calculator operatively connected with the electronic control unit, the calculator calculating speed, location and trajectory of the vehicle.

5. The rear-view system of claim 4 wherein the electronic control unit compares speed, location and trajectory of the vehicle with speed, location and trajectory of the object.

6. The rear-view system of claim 1 further comprising:

a steering wheel disposed on the vehicle; and

a steering wheel actuator operatively connected with the steering wheel, wherein under pre-determined parameters, the steering wheel actuator applies a force to the steering wheel.

7. The rear-view system of claim 6 wherein the steering wheel actuator applies a torque to the steering wheel directing the vehicle away from the object.

8. The rear-view system of claim 6 further comprising:

a steering wheel position sensor operatively connected with the steering wheel, wherein the steering wheel position sensor senses rotation of the steering wheel with respect to a neutral position corresponding to a generally straight trajectory of the vehicle.

9. The rear-view system of claim 1 further comprising:

a steering wheel disposed on the vehicle; and

a steering wheel actuator operatively connected with the steering wheel, wherein when lateral distance between the vehicle and the object is less than a predetermined distance, the steering wheel actuator applies a force to the steering wheel.

10. The rear-view system of claim 1 wherein the alarm is at least one of an audible alarm and a visual alarm.

11. A method of detecting an object in an environment external to a vehicle, the method comprising:

directing a camera mounted on the vehicle into the environment;

the camera generating image information;

an electronic control unit on the vehicle receiving the image information from the camera;

analyzing the image information with the electronic control unit,

detecting position of the object relative to the vehicle; and

activating an alarm on the vehicle when the position of the object relative to the vehicle is within a predetermined distance from the vehicle.

12. The method of claim 11 further comprising the step of:

displaying image information processed by the electronic control unit on a display on the vehicle.

13. The method of claim 11 further comprising the step of:

calculating speed, location and trajectory of the vehicle.

14. The method of claim 11 wherein image information from the camera is processed by the electronic control unit to detect when the object is a secondary vehicle.

16. The method of claim 14 further comprising the step of:

limiting the image information to be processed based on radial distance from the camera.

17. A vehicle having rear-view system to detect an object in a visual blind spot of the vehicle, the vehicle comprising:

a steering wheel;

a first side of the vehicle;

a camera mounted on the first side for generating image information of a view angle area that includes the visual blind spot;

an engine control unit on the vehicle for processing the image information from the camera for detecting and calculating location of an object within the view angle area of the camera, and for calculating lateral distance between the vehicle and the object and comparing the lateral distance to a predetermined distance; and

an alarm on the vehicle controlled by the engine control unit, wherein when the engine control unit activates the alarm when the lateral distance between the vehicle and the object is less than the predetermined distance.

18. The vehicle of claim 17 further comprising:

a display disposed on the vehicle, wherein the engine control unit displays the image information from the camera on the display.

19. The vehicle of claim 17 further comprising:

a steering wheel position sensor disposed on the vehicle, wherein the steering wheel position sensor senses an amount of rotation of the steering wheel with respect to a neutral position corresponding to a generally straight trajectory of the vehicle.

20. The vehicle of claim 17 wherein the camera images both infrared light and visible light.