System and method for monitoring vehicle parameters and driver behavior

• US 8,630,768 B2
• Filed: 05/22/2007
• Issued: 01/14/2014
• Est. Priority Date: 05/22/2006
• Status: Active Grant

• Current Assignee: Inthinc Technology Solutions Incorporated
• Original Assignee: Inthinc Technology Solutions Incorporated
• Inventors: McClellan, Scott, Follmer, Todd, Maynard, Ed, Capps, Eric, Larson, Gib, Ord, Dave, Eyre, Richard, Russon, Verlin, Watkins, Carleton, Litzinger, Jason, Lawrence, Steve, Vo, Vinh
• Primary Examiner(s): Nguyen, Cuong H
• Application Number:
  US11/805,237
• Publication Number:
  US 20080262670A1
• Time in Patent Office: 2,429 Days
• Field of Search: 701/29, 701/213, 701/2, 701/36, 701/31.7, 701/200, 701/207, 347/357.31, 705/4, 340/989, 340/436, 340/985, 340/439, 244/172.1, 342/357.51, 702 94- 95
• US Class Current: 701/36
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G06Q 10/06398 Performance of employee with respect to a job function
• CPC Class Codes: G08G 1/052 with provision for determining speed or overspeed speed measuring in general G01P
• CPC Class Codes: G08G 1/096725 where the received information generates an automatic action on the vehicle control
• CPC Class Codes: G08G 1/09675 where a selection from the received information takes place in the vehicle
• CPC Class Codes: G08G 1/096791 where the origin of the information is another vehicle
• CPC Class Codes: G08G 1/20 Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information

Abstract

System and method for monitoring the operation of a vehicle, comprising a housing having an accelerometer unit, and a global positioning system (GPS) unit, wherein the housing is adapted to be mounted in a window of the vehicle, and wherein the system is adapted to be powered by an on-board diagnostic system of the vehicle.

Claims

1. A monitoring device for monitoring an operation of a vehicle, the monitoring device being configured for determining and using a relative orientation of the monitoring device, relative to the vehicle, for facilitating accurate monitoring of the vehicle, the monitoring device comprising:

a housing having a vertical orientation defined by a vertical axis and a horizontal orientation defined by a housing centerline;

an accelerometer unit with at least one accelerometer;

at least one processor which is communicatively coupled to the accelerometer unit; and

an accelerometer module with computer-executable instructions configured to perform, when executed by the at least one processor, self-orienting of the monitoring device relative to the vehicle, wherein the self-orienting includes;

observing one or more gravitational forces on the at least one accelerometer when it is determined that the vehicle is stopped;

using the one or more observed gravitational forces to determine a gravity vector;

calculating a first offset angle representing an angular difference between the gravity vector and the vertical axis of the housing;

identifying one or more acceleration measurements detected by the at least one accelerometer while the vehicle is moving;

using the one or more acceleration measurements to determine a line in which the vehicle is moving and associating the line in which the vehicle is moving with a centerline of the vehicle; and

calculating a second offset angle representing an angular difference between the centerline of the vehicle and the housing centerline.

2. The monitoring device of claim 1, wherein the monitoring device is further configured to convert the one or more new acceleration measurements detected by the monitoring device into calculated accelerations experienced by the vehicle by using at least one of the first offset angle or the second offset angle.

3. The monitoring device of claim 1, wherein the monitoring device is further configured to convert the one or more new acceleration measurements detected by the monitoring device into calculated accelerations experienced by the vehicle by using both of the first offset angle and the second offset angle.

17. The monitoring device of claim 1, wherein the monitoring device is further configured to repeatedly perform the self-orienting of the monitoring device relative to the vehicle after being mounted in the vehicle on a predetermined periodic basis.

18. The monitoring device of claim 1, wherein the one or more acceleration measurements used to determine a line in which the vehicle is moving comprise one or more acceleration measurements detected while the vehicle is decelerating rather than accelerating.

4. A monitoring system for monitoring an operation of a vehicle, the monitoring system comprising:

a monitoring device that is configured for determining and using a relative orientation of the monitoring device, relative to the vehicle, for facilitating accurate monitoring of the vehicle, wherein the monitoring device comprising;

a housing having a vertical orientation defined by a vertical axis and a horizontal orientation defined by a housing centerline;

an accelerometer unit with at least one accelerometer;

at least one processor which is communicatively coupled to the accelerometer unit; and

an accelerometer module with computer-executable instructions configured to perform, when executed by the at least one processor, self-orienting of the monitoring device relative to the vehicle, wherein the self-orienting includes;

observing one or more gravitational forces on the at least one accelerometer when it is determined that the vehicle is stopped;

using the one or more observed gravitational forces to determine a gravity vector;

calculating a first offset angle representing an angular difference between the gravity vector and the vertical axis of the housing;

identifying one or more acceleration measurements detected by the at least one accelerometer while the vehicle is moving;

using the one or more acceleration measurements to determine a line in which the vehicle is moving and associating the line in which the vehicle is moving with a centerline of the vehicle; and

calculating a second offset angle representing an angular difference between the centerline of the vehicle and the housing centerline.

5. The system of claim 4, further comprising:

a speaker on the housing of the monitoring device for broadcasting messages to a user.

6. The system of claim 4, further comprising:

a microphone on the housing of the monitoring device for receiving speech from a user.

7. The system of claim 4, further comprising:

a one-touch emergency button on the housing of the monitoring device for alerting a remote location when a user or the vehicle is experiencing an emergency.

8. The system of claim 4, further comprising:

a screen for displaying text or iconic messages to a user.

9. The system of claim 4, further comprising:

a keypad for providing user input to the system.

10. The system of claim 4, further comprising:

one or more LED lights on the housing of the monitoring device for providing status information.

11. The system of claim 10, wherein the LED lights provide status information associated with one or more of a system operation, a power status, a communications status, a GPS lock, and a driving violation.

12. The system of claim 4, wherein, after installation, the system initiates the self-orienting.

13. The system of claim 4, wherein the accelerometer unit comprises a three-axis accelerometer for measuring lateral, longitudinal and vertical accelerations.

14. The system of claim 4, wherein the housing of the monitoring device is mounted within the vehicle so that a GPS antenna of the monitoring device has an unobstructed exposure to the sky.

15. The system of claim 4, further comprising:

a communication unit for communicating with a base station; and

an antenna coupled to the communication unit.

16. The system of claim 15, wherein the communication unit provides one or more communications from the group consisting of:

satellite communications;

cellular communications;

WiFi communications; and

RF communications.

20. The system of claim 4, wherein the monitoring device is further configured to monitor the following operations:

hard turns;

hard braking;

hard vertical;

excessive acceleration;

hours of service (HOS);

speeding;

failure to use seatbelt;

failure to use headlights; and

failure to use turn signal.

21. The system of claim 20, wherein the system notifies a driver when a threshold of at least one predetermined vehicle operation parameter has been exceeded for any of the operations identified in claim 20.

24. The monitoring system of claim 4, wherein the monitoring device is further configured to repeatedly perform the self-orienting of the monitoring device relative to the vehicle after being mounted in the vehicle on a predetermined periodic basis.

25. The monitoring system of claim 4, wherein the one or more acceleration measurements used to determine a line in which the vehicle is moving comprise one or more acceleration measurements detected while the vehicle is decelerating rather than accelerating.

26. The monitoring system of claim 4, wherein the monitoring system is a distributed system that includes at least one computing system that is remotely located over a wireless network in communication with the monitoring device.

27. The monitoring system of claim 4, wherein the monitoring device is further configured to convert the one or more new acceleration measurements detected by the monitoring device into calculated accelerations experienced by the vehicle by using at least one of the first offset angle or the second offset angle.

28. The monitoring system of claim 4, wherein the monitoring device is further configured to convert the one or more new acceleration measurements detected by the monitoring device into calculated accelerations experienced by the vehicle by using both of the first offset angle and the second offset angle.

19. A monitoring system for monitoring an operation of a vehicle, the monitoring system comprising:

a monitoring device that is configured for determining and using a relative orientation of the monitoring device, relative to the vehicle, for facilitating accurate monitoring of the vehicle, wherein the monitoring device comprising;

a housing having a vertical orientation defined by a vertical axis and a horizontal orientation defined by a housing centerline;

an accelerometer unit with at least one accelerometer;

at least one processor which is communicatively coupled to the accelerometer unit; and

an accelerometer module with computer-executable instructions configured to perform, when executed by the at least one processor, self-orienting of the monitoring device relative to the vehicle, wherein the self-orienting includes;

observing one or more gravitational forces on the at least one accelerometer;

using the one or more observed gravitational forces to determine a gravity vector;

calculating a first offset angle representing an angular difference between the gravity vector and the vertical axis of the housing;

identifying one or more acceleration measurements detected by the at least one accelerometer while the vehicle is moving;

using the one or more acceleration measurements to identify a centerline of the vehicle; and

calculating a second offset angle representing an angular difference between the centerline of the vehicle and the housing centerline.

22. A computer implemented method for a monitoring system to self-orient a monitoring device relative to a vehicle, wherein the monitoring device includes:

a housing having a vertical orientation defined by a vertical axis and a horizontal orientation defined by a housing centerline;

an accelerometer unit with at least one accelerometer;

at least one processor which is communicatively coupled to the accelerometer unit; and

an accelerometer module with computer-executable instructions configured to perform, when executed by the at least one processor, the method of self-orienting the monitoring device relative to the vehicle,

wherein the method includes;

observing one or more gravitational forces on the at least one accelerometer when it is determined that the vehicle is stopped;

using the one or more observed gravitational forces to determine a gravity vector;

calculating a first offset angle representing an angular difference between the gravity vector and the vertical axis of the housing;

identifying one or more acceleration measurements detected by the at least one accelerometer while the vehicle is moving;

using the one or more acceleration measurements to determine a line in which the vehicle is moving and associating the line in which the vehicle is moving with a centerline of the vehicle; and

calculating a second offset angle representing an angular difference between the centerline of the vehicle and the housing centerline.

23. The method of claim 22, wherein the method is performed at the monitoring device.