Steering wheel hand position sensing device

• US 8,564,424 B2
• Filed: 12/07/2010
• Issued: 10/22/2013
• Est. Priority Date: 12/07/2009
• Status: Active Grant

• Current Assignee: Inventioneers Etc., LLC
• Original Assignee: Inventioneers Etc., LLC
• Inventors: Evarts, Tristan J., Balcom, Paige E., Evarts, Jaiden R., Balcom, Emily A., Balcom, Kathryn J., Evarts, Bryeton A.
• Primary Examiner(s): Lau, Hoi
• Application Number:
  US12/962,122
• Publication Number:
  US 20110133919A1
• Time in Patent Office: 1,050 Days
• Field of Search: 340/439, 340/575, 340/426.24, 340/576
• US Class Current: 340/439
• CPC Class Codes: B60Q 9/00 Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00 , e.g. haptic signalling
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 40/08 related to drivers or passengers
• CPC Class Codes: B62D 1/046 Adaptations on rotatable parts of the steering wheel for accommodation of switches

Abstract

A system is provided for the detection of user hand position on a steering wheel, the system having: a sensor array disposed on the circumference of the wheel configured to detect contact of first and second user hands with the sensor array; a processor whereby data from the sensor array is received and processed generating user hand size, location and movement data; at least one feedback device whereby a user is alerted to an unsafe hand position. the processor being configured to detect conditions in the size, location, and movement data indicative of unsafe user hand position, allow a delay for correction of the condition and communicate existence of the condition for a period exceeding the delay to the at least one feedback device; a data logger configured to record the conditions in the size, location, and movement data indicative of the unsafe user hand position; a tamper indicator whereby unauthorized access to the sensor array, the processor, or the at least one feedback device is communicated to authorized noticees; a transceiver communicating with the processor whereby data relating to unsafe user hand positions is transmitted to the authorized noticees.

Claims

1. A system for detection of user hand position on a steering wheel, the system comprising:

a sensor array disposed on the circumference of said wheel configured to detect contact of first and second user hands with said sensor array;

a processor whereby data from said sensor array is received and processed generating user hand size, location and movement data;

at least one feedback device whereby a user is alerted to an unsafe hand position,

said processor being configured to detect conditions in said size, location, and movement data indicative of unsafe user hand position, allow a delay for correction of said condition and communicate existence of said condition for a period exceeding said delay to said at least one feedback device, said processor calculating the size of said first and second user hands based on a number of sensors in said array activated by said first user hand and the number of sensors activated by said second user hand and identifies size disparities between said first and second user hands as a condition indicative of unsafe user hand position;

a data logger configured to record said conditions in said size, location, and movement data indicative of said unsafe user hand position;

a tamper indicator whereby unauthorized access to said sensor array, said processor, or said at least one feedback device is communicated to authorized noticees;

a transceiver communicating with said processor whereby data relating to unsafe user hand positions is transmitted to said authorized noticees.

2. The system of claim 1 further comprising a vehicle movement indicator, said vehicle movement indicator communicating vehicle direction, speed, and acceleration data to said processor.

3. The system of claim 2 wherein said vehicle movement indicator is an accelerometer.

4. The system of claim 1 wherein said sensor array comprises sensors selected from the group of sensors consisting of:

magnetic sensors, field effect sensing sensors, optical sensors, mechanical sensor, capacitive sensors, infrared sensors, heat sensors, moisture sensors, pressure sensors, biometric sensors, and combinations of the same.

5. The system of claim 4 wherein said biometric sensors are biometric sensors selected from the group consisting of fingerprint scanners, retina scanners, and DNA analyzer.

6. The system of claim 1 wherein said at least one feedback device comprises an illumination of said system.

7. The system of claim 6 wherein said illumination is at least one light emitting diode disposed within a surface of the system and facing the user.

8. The system of claim 6 wherein said illumination emits different colors depending on said conditions.

9. The system according to claim 6 further comprising ambient light detectors communicating ambient light data to said processor whereby intensity of said illumination is varied depending on said ambient light data.

10. The system according to claim 6, wherein at least one predefined portion of said system is configured to be illuminated while said system is in operation in a color indicating that hand placement on a top third portion of the wheel is sub-optimal.

11. The system according to claim 10 wherein said predefined portion represents hand placements which would interfere with an airbag installed in said steering wheel.

12. The system according to claim 1 wherein an alert to said user by said at least one feedback device increases in intensity while said condition persists.

13. The system of claim 1 wherein said processor identifies a lack of movement by at least one of said first and second user hands as indicative of a condition indicative of unsafe user hand position.

14. The system of claim 1 wherein said system is integrated into said steering wheel.

15. The system of claim 1 further comprising a steering wheel cover wherein said sensor array is disposed.

16. The system according to claim 1 wherein said at least one feedback device comprises an audio indicator, illuminations, heads-up display alerts, or visual display.

17. The system of claim 1 wherein the detection of more than said first and said second hands is identified by said processor as indicative of unsafe user hand position.

18. A method for the detection of user hand placement on a steering wheel, said method comprising:

initiating a polling loop while a vehicle is in motion but not turning;

dividing sensor data into a plurality of segments where a hand of said user placed in contact with the steering wheel activates sensors in a segment;

testing for a valid hand position based on activated sensor data;

said valid hand position comprising first and second hands of about approximately the same size and said first and second hands covering a predetermined number of segments from said plurality of segments;

if said first and second hands are dissimilar in size, logging an event notice and activating an alert;

if an active number of segments exceeding said predetermined number of segments are activated, logging an event and activating an alert; and

if an active number of segments are less than said predetermined number of segments are activated, logging an event and activating an alert after a preset delay.