AUTONOMOUS VEHICLE SEAT POSITIONING SYSTEM

• US 20180244174A1
• Filed: 02/27/2017
• Published: 08/30/2018
• Est. Priority Date: 02/27/2017
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan North America Incorporated (Nissan Motor Co., Ltd.)
• Inventors: TAN, Adrian
• Granted Patent: US 10,150,386 B2
• Time in Patent Office: Days
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/0244 with logic circuits
• CPC Class Codes: B60N 2/22 the back-rest being adjustable B60N2/2878 takes precedence

Abstract

An autonomous vehicle seat positioning system includes a seat controller connected to a autonomous vehicle controller and a positioning mechanism of a seat assembly. The seat controller is configured to operating the positioning mechanism such that with the autonomous vehicle controller operating the vehicle in a self-driving mode and the vehicle operator'"'"'s seat assembly being in a reclined setting: in response to the autonomous vehicle controller detecting an emergency condition requiring a change to the manual driving mode, the seat controller operates the positioning mechanism to move the operator'"'"'s seat assembly from the reclined setting to the upright setting in an emergency re-positioning mode, and in response to the autonomous vehicle controller detecting a non-emergency condition requiring a change to the manual driving mode, the seat controller operates the positioning mechanism to move the operator'"'"'s seat assembly from the reclined setting to the upright setting in a non-emergency re-positioning mode.

Claims

1. An autonomous vehicle seat positioning system, comprising:

an autonomous vehicle controller configured to operate a vehicle in a self-driving mode and a manual driving mode;

an operator'"'"'s seat assembly having a positioning mechanism configured to move the operator'"'"'s seat assembly between a reclined setting and an upright setting; and

a seat controller connected to the autonomous vehicle controller and the positioning mechanism of the vehicle seat assembly, the seat controller being configured to operating the positioning mechanism such that with the autonomous vehicle controller operating the vehicle in the self-driving mode and the vehicle operator'"'"'s seat assembly being in the reclined setting;

in response to the autonomous vehicle controller detecting an emergency condition requiring a change to the manual driving mode, the seat controller operates the positioning mechanism to move the operator'"'"'s seat assembly from the reclined setting to the upright setting in an emergency re-positioning mode, and

in response to the autonomous vehicle controller detecting a non-emergency condition requiring a change to the manual driving mode, the seat controller operates the positioning mechanism to move the operator'"'"'s seat assembly from the reclined setting to the upright setting in a non-emergency re-positioning mode.

2. The autonomous vehicle seat positioning system according to claim 1, wherein

the autonomous vehicle controller is configured such that the emergency condition includes further determining a first level of urgency and a second level of urgency,

the seat controller is configured such that the emergency re-positioning mode includes a first emergency movement sequence and a second emergency movement sequence, wherein

in response to the autonomous vehicle controller determining that the emergency condition includes the first level of urgency, the seat controller employs the first emergency movement sequence in which the seat positioning mechanism is operated to immediately move the operator'"'"'s seat assembly from the reclined setting to the upright setting, and

in response to the autonomous vehicle controller determining that the emergency condition includes the second level of urgency, the seat controller employs the second emergency movement sequence in which the seat positioning mechanism is operated to move the operator'"'"'s seat assembly from the reclined setting to the upright setting within a first pre-determined period of time.

3. The autonomous vehicle seat positioning system according to claim 2, wherein the first pre-determined period of time is between 1 and 2 minutes.

4. The autonomous vehicle seat positioning system according to claim 2, wherein

the autonomous vehicle controller is configured such that the first level of urgency is determined in response to a first group of detected road conditions that include a road incident that has occurred less than a first predetermined distance ahead of the vehicle, or a weather condition determined to be less that the first predetermined distance ahead of the vehicle, and

the autonomous vehicle controller is configured such that the second level of urgency is determined in response to a second group of detected road conditions that include a road incident that has occurred greater than the first predetermined distance from the vehicle and less a second predetermined distance from the vehicle, or the vehicle is approaching a weather condition that has been detected a distance ahead of the vehicle greater than the first predetermined distance from the vehicle and less the second predetermined distance from the vehicle.

5. The autonomous vehicle seat positioning system according to claim 1, wherein

the autonomous vehicle controller is configured such that the non-emergency condition includes one of the following:

a determination that the vehicle will arrive at a designated destination within a second predetermined period of time, and a determination that the vehicle is in need of re-fueling within the second predetermined period of time.

6. The autonomous vehicle seat positioning system according to claim 1, wherein

the seat controller is configured such that the non-emergency re-positioning mode includes a non-emergency movement sequence in which the seat controller moves the operator'"'"'s seat assembly from the reclined setting to the upright setting in a stepped sequence in order to gradually move the occupant of the operator'"'"'s seat assembly to the upright setting.

7. The autonomous vehicle seat positioning system according to claim 6, wherein

the stepped sequence of the non-emergency re-positioning mode employed by the seat controller includes a two-stage movement such that during a first stage of movement, the operator'"'"'s seat assembly is moved to an intermediate orientation approximately 50% of the distance between the reclined setting and the upright setting, after which movement is paused for a predetermined number of seconds, and then moved in a second stage of movement to the upright setting.

8. The autonomous vehicle seat positioning system according to claim 6, wherein

the stepped sequence of the non-emergency re-positioning mode employed by the seat controller includes a three-stage movement such that during a first stage of movement, the operator'"'"'s seat assembly is moved to a first intermediate orientation approximately 33% of the distance from the reclined setting to the upright setting, after which movement is paused for a predetermined number of seconds, and then moved to a second intermediate orientation approximately 66% of the distance from the reclined setting the upright setting, after which movement is paused for the predetermined number of seconds and then moved fully to the upright setting.

9. The autonomous vehicle seat positioning system according to claim 6, wherein

the stepped sequence of the non-emergency re-positioning mode employed by the seat controller includes a four-stage movement such that during a first stage of movement, the operator'"'"'s seat assembly is moved to a first intermediate orientation approximately 25% of the distance from the reclined setting to the upright setting, after which movement is paused for a predetermined number of seconds, then moved to a second intermediate orientation approximately 50% of the distance from the reclined setting the upright setting, after which movement is paused for the predetermined number of seconds, then moved to a third intermediate orientation approximately 75% of the distance from the reclined setting the upright setting, after which movement is paused for the predetermined number of seconds, and then moved fully to the upright setting.

10. The autonomous vehicle seat positioning system according to claim 1, wherein

the seat controller is configured such that the non-emergency re-positioning mode includes vibrating the operator'"'"'s seat assembly prior to movement of the operator'"'"'s seat assembly.

11. The autonomous vehicle seat positioning system according to claim 1, further comprising

a display installed to a roof of a passenger compartment within the vehicle, and

the seat controller is connected to the display and is configured to display information relating to movement of the operator'"'"'s seat assembly, including a countdown to beginning of movement of the operator'"'"'s seat assembly in the non-emergency re-positioning mode.

12. The autonomous vehicle seat positioning system according to claim 1, further comprising

a display installed to a roof of a passenger compartment within the vehicle.

13. The autonomous vehicle seat positioning system according to claim 12, wherein

the seat controller is connected to the display and is configured to display information on the display including captured images of an area forward of the vehicle with the operator'"'"'s seat assembly in the reclined setting.

14. The autonomous vehicle seat positioning system according to claim 12, wherein

the operator'"'"'s seat assembly has a base portion, a seat cushion portion and a seatback portion, the base portion being attached to a floor of a passenger compartment within the vehicle, the seat cushion portion being directly supported to the base portion and being movable relative to the base portion, the seatback portion supported for pivotal movement relative to the seat cushion portion, and the positioning mechanism being configured to move the seat cushion portion in vehicle forward and vehicle rearward directions to any of a plurality of positions relative to the base portion and being configured to move the seatback portion to any of a plurality of upright orientations and a plurality of reclined orientations relative to the seat cushion portion;

and

the seat controller is configured such that

a first of the plurality of positions of the seat cushion portion and a first of the plurality of seat upright orientations of the seatback portion inputted by the first occupant via a control panel are saved in memory as the first upright setting by the seat controller, the first upright setting corresponding to the first occupant being positioned for manual driving of the vehicle with the autonomous vehicle controller operating the vehicle in the manual driving mode, and

a second of the plurality of positions of the seat cushion portion and a first of the plurality of seat reclined orientations of the seatback portion inputted by the first occupant via the control panel, are saved by the seat controller as the reclined setting, the reclined setting corresponding to the first occupant being positioned for viewing the display with the vehicle operating in the self-driving mode.

15. The autonomous vehicle seat positioning system according to claim 1, further comprising

a camera configured to capture images of an occupant seated in the operator'"'"'s seat assembly, the camera being connected to the seat controller, and

the seat controller is configured to determine whether or not the occupant of the operator'"'"'s seat assembly is currently asleep.

16. The autonomous vehicle seat positioning system according to claim 13, wherein

the seat controller is configured to determine how long the occupant has been asleep, and in response to determining that the occupant has been sleeping for longer than a third predetermined period of time, the seat controller vibrates the operator'"'"'s seat assembly.