Drowsy driver detection

• US 9,821,657 B2
• Filed: 04/22/2015
• Issued: 11/21/2017
• Est. Priority Date: 04/22/2015
• Status: Active Grant

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Inventors: Gan, Su-Yin
• Primary Examiner(s): WILSON, BRIAN P
• Application Number:
  US14/693,093
• Publication Number:
  US 20160311440A1
• Time in Patent Office: 944 Days
• Field of Search: 3405731, 340575, 340576
• CPC Class Codes: B60K 28/06 responsive to incapacity of driver
• CPC Class Codes: G08B 21/06 indicating a condition of sleep, e.g. anti-dozing alarms

Abstract

In embodiments of drowsy driver detection, a drowsy driver mode is initiated on a wearable wireless device being worn by a user in response to detecting that the user is driving a vehicle. The drowsy driver mode causes the wearable wireless device to use a first sensor to generate first sensor data which can be analyzed to detect a drowsy driver condition. In response to detecting the drowsy driver condition, a second sensor on the wearable wireless device is activated to generate second sensor data that can be analyzed to confirm the drowsy driver condition. In response to confirming the drowsy driver condition, one or more alerts are initiated. Generally, the alerts are intended to wake up the user, warn other passengers in the vehicle that the user is drowsy or otherwise impaired, and/or notify an emergency operator.

Claims

1. A wireless device, comprising:

an interface configured to establish a wireless connection with a wearable wireless device associated with a user;

a memory coupled to the interface; and

a processor coupled to the interface to implement a drowsy driver module, the drowsy driver module configured to;

determine that the user is driving a vehicle;

initiate a drowsy driver mode on the wearable wireless device that causes a motion sensor of the wearable wireless device to monitor for movement of the user and generate motion data corresponding to the movement;

analyze the motion data to detect a drowsy driver condition, the drowsy driver condition indicating that the user may be drowsy;

in response to determining the drowsy driver condition, cause activation of a heart rate monitor on the wearable wireless device to generate heart rate data corresponding to a current heart rate of the user;

analyze the heart rate data to confirm the drowsy driver condition; and

initiate one or more alerts in response to confirming the drowsy driver condition.

2. The wireless device of claim 1, wherein the drowsy driver module is configured to detect the drowsy driver condition by:

comparing the motion data to a movement threshold; and

detecting the drowsy driver condition if an abnormal movement pattern is detected based on the comparison.

3. The wireless device of claim 1, wherein the drowsy driver module is configured to confirm the drowsy driver condition by:

comparing the current heart rate of the user to a normal heart rate range; and

confirm the drowsy driver condition if the current heart rate of the user is outside of the normal heart rate range.

4. The wireless device of claim 3, wherein the drowsy driver module is configured to confirm the drowsy driver condition if the current heart rate of the user is below the normal heart rate range.

5. The wireless device of claim 3, wherein the drowsy driver module is configured to confirm the drowsy driver condition if the current heart rate of the user is above the normal heart rate range.

6. The wireless device of claim 3, wherein the drowsy driver module is further configured to de-activate the heart rate monitor on the wearable wireless device if the current heart rate of the user is within the normal heart rate range.

7. The wireless device of claim 1, wherein the one or more alerts comprise one or more audible alerts.

8. The wireless device of claim 7, wherein the one or more audible alerts are output from one or more speakers of the wearable wireless device, one or more speakers of the wireless device, or one or more speakers of the vehicle.

9. The wireless device of claim 1, wherein the drowsy driver module is configured to initiate the one or more alerts by automatically contacting an emergency operator to request help for the user.

10. The wireless device of claim 1, wherein the drowsy driver module is configured to determine that the user is driving the vehicle based on a connection status of the wireless device with a vehicle kit device associated with the vehicle.

11. The wireless device of claim 1, wherein the drowsy driver module is configured to initiate the drowsy driver mode on the wearable wireless device by communicating at least one notification to the wearable wireless device over the wireless connection.

12. The wireless device of claim 1, wherein the drowsy driver module is configured to activate the heart rate monitor on the wearable wireless device by communicating one or more activation controls to the wearable wireless device over the wireless connection to cause the wearable wireless device to enable the heart rate monitor.

13. The wireless device of claim 1, wherein the wireless device comprises a smart phone, and wherein the wearable wireless device comprises one of a smart watch or a smart bracelet.

14. A computer-implemented method comprising:

initiating a drowsy driver mode on a wearable wireless device being worn by a user in response to detecting that the user is driving a vehicle;

in response to initiating the drowsy driver mode, causing the wearable wireless device to generate first sensor data using a first sensor;

analyzing the first sensor data to detect a drowsy driver condition;

in response to detection of the drowsy driver condition, causing activation of a second sensor on the wearable wireless device to generate second sensor data;

analyzing the second sensor data to confirm the drowsy driver condition; and

initiating one or more alerts in response to confirming the drowsy driver condition.

15. The computer-implemented method of claim 14, wherein the first sensor of the wearable wireless device comprises a low-power sensor that uses relatively less power than the second sensor of the wearable wireless device.

16. The computer-implemented method of claim 14, wherein the first sensor comprises a motion sensor that is configured to monitor movement of the user'"'"'s hand and generate motion data based on the movement, and wherein the second sensor comprises a heart rate monitor that is configured to monitor a current heart rate of the user and generate heart rate data based on the current heart rate of the user.

17. The computer-implemented method of claim 14, wherein at least one of the initiating, analyzing, activating, analyzing, or initiating is performed by a drowsy driver module implemented at a wireless device that is wirelessly connected to the wearable wireless device.

18. The computer-implemented method of claim 14, wherein at least one of the initiating, analyzing, activating, analyzing, or initiating is performed by a drowsy driver module implemented at the wearable wireless device.

19. A wearable wireless device, comprising:

a motion sensor configured to sense movement of a hand of a user wearing the wearable wireless device;

a heart rate monitor configured to detect a current heart rate of the user;

at least a memory and a processor to implement a drowsy driver mode in response to detecting that the user is driving a vehicle, the drowsy driver mode configured to;

monitor movement of the user'"'"'s hand using the motion sensor to detect an abnormal movement;

enable the heart rate monitor in response to detecting the abnormal movement; and

initiate one or more audible alerts if the current heart rate of the user is outside of a normal heart rate range.

20. The wearable wireless device of claim 19, wherein the wearable wireless device is wirelessly connected to a car kit device of the vehicle, and wherein the drowsy driver mode is configured to initiate the one or more audible alerts by communicating a control signal to the car kit device to cause the one or more audible alerts to be output using one or more speakers of the vehicle.