Screen reduction system for autonomous vehicles

Patent metadata

Field	Value
Publication number	US-10435035-B2
Application number	US-201816159928-A
Country	US
Kind code	B2
Filing date	Oct 15, 2018
Priority date	Oct 17, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A vehicle includes at least one of a camera and a proximity sensor for detecting an obstacle in a vehicle path. A screen is projected on a windshield of the vehicle. A driver inattention determination unit determines a driver attentiveness. A danger level determination unit determines a danger level on a danger scale according to one or more of the driver attentiveness, a driving condition, a driving hazard, and the presence of the obstacle. A driver alert unit reduces a size of the screen on the windshield proportional to the danger level.

First claim

What is claimed is:

1. A vehicle for providing various warnings to a driver of an obstacle or hazardous road condition comprising:
at least one of a camera and a proximity sensor for detecting the obstacle in a vehicle path;
a screen projected on a windshield of the vehicle;
a driver inattention determination unit that determines a driver attentiveness of the driver;
a danger level determination unit that determines a danger level on a danger scale indicating a severity of situation and conditions of the vehicle according to the driver attentiveness, a driving condition, a driving hazard, and a presence of the obstacle, the danger level determination unit assigning the danger level to a percent of the danger scale and comparing the percent with a plurality of danger level thresholds of the danger scale; and
a driver alert unit that reduces a size of the projected screen and moves the reduced screen to the middle of the windshield if the percent is greater than a first danger level threshold and removes the projected screen on the windshield if the percent is equal to the maximum level of the danger scale to allow the driver to see directly in front of the vehicle.

2. The vehicle of claim 1 , wherein the driver attentiveness is based on one or more of the driver's head position, the driver's utilization of the screen projected on the windshield, the driver's breathing rate, the driver's eye path, the driver's eye lid position, the driver's heart rate, the driver's oxygen level, the driver's head movement, and the driver's body posture.

3. The vehicle of claim 1 , wherein the driver alert unit reduces the projected screen on the windshield to 30% in size when the percent is greater than the first danger threshold level at 50%.

4. The vehicle of claim 1 , wherein the driver alert unit further triggers at least one of an audible alert and a tactile alert when the percent is equal to the maximum level of the danger scale at 100%.

5. The vehicle of claim 1 , wherein the driver alert unit replaces the projected screen with an augmented reality screen displaying markers to highlight obstacles when the percent is equal to the maximum level of the danger scale at 100%.

6. The vehicle of claim 1 , wherein the driver alert unit increases a transparency of the projected screen on the windshield in proportion to the percent of the danger level.

7. A method for providing various warnings to a driver of an obstacle or hazardous road condition comprising:
projecting, a heads-up display of the vehicle, a screen on a windshield of a vehicle;
detecting, by at least one of a camera and a proximity sensor, an obstacle in a vehicle path;
determining, by a driver inattention determination unit, a driver attentiveness of the driver;
determining, by a danger level determination unit, a danger level on a danger scale indicating a severity of situation and conditions of the vehicle according to the driver attentiveness, a driving condition, a driving hazard, and a presence of the obstacle;
assigning, by the danger level determination unit, the danger level to a percent of the danger scale and comparing the percent with a plurality of danger level thresholds of the danger scale; and
reducing, by a driver alert unit, a size of the projected screen and moving the reduced screen to the middle of the windshield if the percent is greater than a first danger level threshold; and
removing, by the driver alert unit, the projected screen if the percent is equal to the maximum level of the danger scale to allow the driver to see directly in front of the vehicle.

8. The method of claim 7 , further comprising determining the driver attentiveness based on one or more of the driver's head position, the driver's utilization of the screen projected on the windshield, the driver's breathing rate, the driver's eye path, the driver's eye lid position, the driver's heart rate, the driver's oxygen level, the driver's head movement, and the driver's body posture.

9. The method of claim 7 , further comprising reducing, by the driver alert unit, the projected screen on the windshield to 30% in size when the percent is greater than the first danger threshold level at 50%.

10. The method of claim 7 , further comprising triggering, by the driver alert unit, at least one of an audible alert and a tactile alert when the percent is equal to the maximum level of the danger scale at 100%.

11. The method of claim 7 , further comprising replacing, by the driver alert unit, the projected screen with an augmented reality screen displaying markers to highlight obstacles when the percent is equal to the maximum level of the danger scale at 100%.

12. The method of claim 7 , further comprising increasing, by the driver alert unit, a transparency of the projected screen on the windshield in proportion to the percent of the danger level.

Assignees

• Denso Int America Inc

Inventors

• Wiegand Michael
• Hummer Charles

Classifications

• B60W50/14 Primary

  Means for informing the driver, warning the driver or prompting a driver intervention · CPC title

• B60W2540/26

  Incapacity · CPC title

• B60W2050/146

  Display means · CPC title

• B60W2050/143

  Alarm means · CPC title

• B60W2040/0818

  Inactivity or incapacity of driver · CPC title