Vehicle sensing system with 360 degree near range sensing

Patent metadata

Field	Value
Publication number	US-10768298-B2
Application number	US-201715619627-A
Country	US
Kind code	B2
Filing date	Jun 12, 2017
Priority date	Jun 14, 2016
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A sensing system for a vehicle includes a first sensor at a forward portion of a side of the vehicle such that a principal axis of the first sensor's zone of sensing is rearward and sideward and at an angle relative to the body, and a second sensor at a rearward portion of the side of the vehicle such that a principal axis of the second sensor's zone of sensing is forward and sideward and at an angle relative to the body. Data sensed by the sensors when each sensor senses with at least two zones of sensing are communicated to a control, which determines the presence of one or more objects exterior the vehicle and within the zones of sensing of at least one of the sensors.

First claim

The invention claimed is:

1. A sensing system for a vehicle, said sensing system comprising:
a plurality of sensors disposed along a side of a body of a vehicle;
wherein said plurality of sensors comprises a first sensor disposed at a forward portion of the side of the vehicle that is forward of a transverse centerline of the vehicle such that a principal axis of the first sensor's zone of sensing extends rearward and sideward at an angle less than 90 degrees and greater than 0 degrees relative to the side of the body, and wherein a side boundary of the first sensor's zone of sensing that extends rearward is parallel to or intersecting the side of the body of the vehicle at which said first sensor is disposed;
wherein said plurality of sensors comprises a second sensor disposed at a rearward portion of the side of the vehicle that is rearward of the transverse centerline of the vehicle such that a principal axis of the second sensor's zone of sensing extends forward and sideward at an angle less than 90 degrees and greater than 0 degrees relative to the side of the body, and wherein a side boundary of the second sensor's zone of sensing that extends forward is parallel to or intersecting the side of the body of the vehicle at which said second sensor is disposed;
wherein a zone of sensing for each of said first and second sensors is created using at least one of (i) signal gain made on each sensor and (ii) signal threshold made on each sensor;
wherein the zone of sensing for each of said first and second sensors is adjusted to an adjusted zone of sensing using at least one of (i) signal gain adjustment made on each sensor and (ii) signal threshold adjustment made on each sensor; and
a control, wherein sensor data sensed by said first and second sensors with the zone of sensing and sensor data sensed by said first and second sensors with the adjusted zone of sensing are communicated to said control, and wherein said control, responsive to processing of the communicated sensor data sensed by said first and second sensors, determines the presence of at least one object exterior the vehicle and within the zone of sensing and adjusted zone of sensing of at least one of said first and second sensors.

2. The sensing system of claim 1 , wherein said control is operable to adjust the zone of sensing of each of said first and second sensors using at least one of signal gain and signal threshold levels to obtain predetermined shaping of the zone of sensing, wherein multiple signal gain settings and signal threshold levels for said first and second sensors are stored in memory.

3. The sensing system of claim 1 , wherein said control compares ranges at which detections are received when said first and second sensors are sensing with the zone of sensing with ranges at which detections are received when said first and second sensors are sensing with the adjusted zone of sensing using a modified signal gain and threshold setting to determine height of an object present exterior the vehicle and within the zone of sensing and adjusted zone of sensing of at least one of said first and second sensors, wherein said control is operable to generate an alert responsive at least in part to the determined height of the determined object.

4. The sensing system of claim 3 , wherein the modified signal gain and threshold setting results in a narrower vertical adjusted zone of sensing of said first and second sensors as compared to the zone of sensing of said sensors with a standard signal gain and threshold setting.

5. The sensing system of claim 1 , wherein multiple adjusted zones of sensing are generated of the horizontal and vertical coverage areas at the side of the vehicle.

6. The sensing system of claim 5 , wherein said sensing system uses a warning zone to provide warnings to a driver of the vehicle or to limit motion of the vehicle to limit risk of collision or damage to the vehicle.

7. The sensing system of claim 5 , wherein said sensing system uses a warning zone to limit motion of vehicle elements to limit risk of damage to the vehicle, and wherein the vehicle elements comprise at least one of a door of the vehicle, a sliding door of the vehicle, and a liftgate of the vehicle.

8. The sensing system of claim 5 , wherein said sensing system utilizes comparisons of the multiple horizontal zones of sensing and/or a memorized signature response of the vehicle body to cancel reflections due to the vehicle body to obtain a clear image of objects adjacent to the vehicle.

9. The sensing system of claim 5 , wherein said sensing system utilizes comparisons of the multiple vertical zones of sensing to classify low profile objects.

10. The sensing system of claim 1 , wherein said plurality of sensors comprises a third sensor disposed at the side of the vehicle between said first sensor and said second sensor, and wherein a principal axis of a zone of sensing of said third sensor's is generally normal to the side of the body of the vehicle.

11. The sensing system of claim 10 , wherein a combination of said first, second and third sensors at each side of the vehicle and other sensors at the front and rear of the vehicle provides 360 degrees of coverage around the entire vehicle and less than 50 m from the vehicle body.

12. The sensing system of claim 1 , wherein said plurality of sensors comprises a plurality of ultrasonic sensors.

13. The sensing system of claim 1 , wherein said plurality of sensors comprises a plurality of radar sensors.

14. The sensing system of claim 1 , wherein said first and second sensors are part of a sensing system capable of providing short range driver assist system functions, and wherein said sensing system provides short range detection for at least one of an automated parking system of the vehicle, a blind spot detection system of the vehicle, a cross traffic alert system of the vehicle, a lane change and merge aid system of the vehicle, an automatic emergency braking system of the vehicle, a pedestrian detection system of the vehicle, a turn assist system of the vehicle, and an intersection collision mitigation system of the vehicle.

15. A sensing system for a vehicle, said sensing system comprising:
a first radar sensor disposed at a forward portion of the side of the vehicle that is forward of a transverse centerline of the vehicle such that a principal axis of the first radar sensor's zone of sensing extends rearward and sideward at an angle less than 90 degrees and greater than 0 degrees relative to the side of the body, wherein a side boundary of the first radar sensor's zone of sensing that extends rearward is parallel to or intersecting the side of the body of the vehicle at which said first radar sensor is disposed;
a second radar sensor disposed at a rearward portion of the side of the vehicle that is rearward of the transverse centerline of the vehicle such that a principal axis of the second radar sensor's zone of sensing extends forward and sideward at an angle less than 90 degrees and greater than 0 degrees relative to the side of the body, wherein a side boundary of the second radar sensor's zone of sensing that extends forward is parallel to or intersecting the side of the body of the vehicle at which said second radar sensor is disposed;
a third radar sensor disposed at the side of the vehicle between said first radar sensor and said second radar sensor such that a principal axis of a zone of sensing of said third radar sensor is generally normal to the side of the body of the vehicle;
wherein a zone of sensing for each of said first, second, and third radar sensors is created using at least one of (i) signal gai

Assignees

• Magna Electronics Inc

Inventors

• Wodrich Helmut A
• Chen Tzu-Nan
• Lai Chien Wen
• Petit Jerome

Classifications

• G01S15/87

  Combinations of sonar systems · CPC title

• B60Q9/006

  using a distance sensor · CPC title

• G01S2013/9315

  Monitoring blind spots · CPC title

• G01S2013/93274

  on the side of the vehicles · CPC title

• G01S2013/9314

  Parking operations · CPC title