Alert and warning system and method

• US 8,193,949 B2
• Filed: 08/05/2010
• Issued: 06/05/2012
• Est. Priority Date: 05/25/2007
• Status: Expired due to Fees

• Current Assignee: Cirrus Systems, Inc.
• Original Assignee: Spot Devices Incorporated (Carmanah Technologies Corporation)
• Inventors: Burns, Chester Allen
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US12/851,487
• Publication Number:
  US 20100295708A1
• Time in Patent Office: 670 Days
• Field of Search: 340/426.18, 340/426.19, 340/426.2, 340/426.21, 340/426.22, 340/438, 340/439, 340/539.1, 340/539.13, 340/425.5, 340/988, 340/989, 340/991, 340/993, 340/994, 701/19, 701/117, 701/118, 701/201
• US Class Current: 340/991
• CPC Class Codes: G08G 1/164 Centralised systems, e.g. external to vehicles
• CPC Class Codes: G08G 3/02 Anti-collision systems

Abstract

The present inventions provide a system and method for providing a warning using at least one wireless communication link between an approaching object and the location where a warning is to be given based in part on the location of the object and its proximity to the warning location. One aspect of the inventions includes receiving a communication from an object, for example a vehicle, which includes location information, at an alert node, wirelessly communicating alert information to a warning node, and causing a warning device to generate a warning. Preferably the alert node communicates with a plurality of vehicles and a plurality of warning nodes and determines to which of the plurality of warning nodes to communicate alert information based in part on the location information received from at least one of the vehicles and the location of the warning device.

Claims

1. A warning system comprising:

at least one alert zone defined by at least one set of coordinate pairs;

at least one wireless alert trigger node attached to a vehicle, configured to generate a wireless alert signal based on whether the position of the vehicle corresponds to the coordinate pair;

at least one warning alert response node configured to receive the wireless alert signal and generate a warning activation signal;

at least one warning device configured to receive the warning activation signal and generate a warning in response to said warning activation signal.

2. The warning system of claim 1 wherein the at least one set of coordinate pairs is a predetermined set of coordinate pairs.

3. The warning system of claim 1 wherein the at least one set of coordinate pairs is a variable set of coordinate pairs.

4. The warning system of claim 1 wherein the at least one warning device is stationary.

5. The warning system of claim 1 wherein the at least one warning device is attached to the vehicle.

6. The warning system of claim 1 wherein the wireless alert trigger node includes a transmitter configured to transmit the wireless alert signal through a network selected from the group of a cellular network, a satellite network and a local wireless network.

7. The warning system of claim 1 wherein the wireless alert response node includes a transmitter configured to transmit the warning activation signal through a network selected from the group of a cellular network, a satellite network and a local wireless network.

8. The warning system of claim 1 wherein the wireless alert trigger node transmits the wireless alert signal through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

9. The warning system of claim 1 wherein the wireless alert response node transmits the warning activation signal through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

10. The warning system of claim 1 wherein the wireless alert trigger node further comprises

a satellite navigation system receiver configured to receive position information from a satellite navigation system network and generate a position signal;

an alert signal generator configured to generate the wireless alert signal based in part upon the position signal.

11. The warning system of claim 10 wherein the satellite navigation system receiver is a GPS receiver and the satellite navigation system network is a GPS network.

12. The warning system of claim 10 wherein the wireless alert trigger node further comprises

a microcontroller and

an alert zone storage medium storing the sets of coordinate pairs defining the at least one alert zone;

the microcontroller is configured to receive the position signal from the satellite navigation system receiver as an input and to access the stationary predetermined location storage medium;

the microcontroller is further configured to determine whether the position of the vehicle corresponds to at least one of the coordinate pairs defining the at least one alert zone.

13. The warning system of claim 12 wherein the alert zone storage medium is a Non-Volatile Random Access Memory (NVRAM).

14. The warning system of claim 12 wherein the stationary predetermined location storage medium is a Flash or similar memory.

15. The warning system of claim 12 wherein the alert zone storage medium is a hard drive.

16. The warning system of claim 12 wherein the alert zone storage medium is a DVD.

17. The warning system of claim 12 wherein the at least one alert zone defined by the at least one set of coordinate pairs varies depending on current weather conditions at a location corresponding to at least one of the coordinate pairs or the location of the at least one warning device.

18. The warning system of claim 1 wherein the vehicle is a locomotive or a railcar.

19. The warning system of claim 18 wherein the warning device is located at a rail crossing.

20. The warning of claim 18 wherein the warning device is attached to the locomotive or the railcar.

21. The warning system of claim 1 wherein at least one warning device is selected from the group consisting of a beacon, an audio device, a crossing gate, in-road warning lights, a traffic signal, and a warning display.

22. The warning system of claim 1 wherein the vehicle is an emergency vehicle, the at least one wireless alert response node is configured to communicate with a traffic signal and to manipulate the traffic signal based on the position of the emergency vehicle to halt traffic at an intersection where the traffic signal is located until the emergency vehicle passes through the intersection.

23. The warning system of claim 1 wherein the vehicle is a small watercraft.

24. The warning system of claim 23 wherein the at least one wireless alert response node is located on a navigation aid or obstacle.

25. The warning system of claim 23 wherein the at least one wireless alert response node is attached to the watercraft.

26. The warning system of claim 23 wherein the navigation aid(s) or obstacle(s) equipped with the wireless alert response node are selected from the group consisting of buoys, stationary beacons, channel markers and large watercraft.

27. The method of providing a warning of an approaching vehicle comprising:

generating a wireless alert signal based on whether the position of the vehicle corresponds to at least one of coordinate pairs from a set of coordinate pairs defining at least one alert zone;

receiving said wireless alert signal;

generating a warning activation signal;

receiving said warning activation signal;

generating a warning in response to the warning activation signal,

wherein the warning is generated so that the warning is most likely to reach the intended audience.

28. The method of claim 27 wherein the set of coordinate pairs defining the at least one alert zone is a predetermined set of coordinate pairs.

29. The method of claim 27 wherein the set of coordinate pairs defining the at least one alert zone is a variable set of coordinate pairs.

30. The method of claim 27 further comprising

transmitting the wireless alert signal through a networks selected from the group consisting of a cellular network, a satellite network or a local wireless network.

31. The method of claim 27 further comprising

transmitting said warning activation signal through a networks selected from the group consisting of a cellular network, a satellite network or a local wireless network.

32. The method of claim 27 further comprising

transmitting said wireless alert signal through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

33. The method of claim 27 further comprising

transmitting said warning activation signal through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

34. The method of claim 27 further comprising

receiving a position information of the vehicle;

generating a position signal based on the position information of the vehicle;

generating the wireless alert signal based at least in part upon the position signal.

35. The method of claim 34 further comprising

accessing an alert zone storage medium;

retrieving information regarding the at least one set of coordinate pairs defining the at least one alert zone;

determining whether the position of the vehicle corresponds to at least one coordinate pair from the at least one set of coordinate pairs at least in part based on the position signal.

36. The method of claim 35 wherein the alert zone storage medium is a non-volatile random access memory.

37. The method of claim 35 wherein the alert zone storage medium is a Flash memory.

38. The method of claim 35 wherein the alert zone storage medium is a Hard drive.

39. The method of claim 35 wherein the alert zone storage medium is a DVD.

40. The method of claim 35 wherein the at least one set of coordinate pairs defining the at least one alert zone varies depending in current weather conditions at a location corresponding to at least one of the coordinate pairs of on location of a warning device producing the warning.

41. The method of claim 34 wherein the position signal is generated by a satellite navigation system.

42. The method of claim 41 wherein the satellite navigation system is a Global Positioning System (GPS).

43. A warning system comprising:

a position transmitter attached to a vehicle, configured to transmit wireless vehicle position information;

a host alert node;

at least one warning alert response node;

at least one alert zone defined by at least one set of coordinate pairs;

at least one warning device;

wherein the host alert node is configured

to determine whether the position of the vehicle corresponds to the coordinate pair from the at least one set of coordinate pairs at least in part based on the wireless vehicle position information and

to transmit alert information to the at least one warning alert response node when the position of the vehicle corresponds to the at least one coordinate pair;

the warning alert response node is configured to receive the alert information and to output an alert activation signal to the warning device;

the warning device is configured to receive as an input the alert activation signal and to generate a warning in response to the alert activation signal;

the warning device being positioned such as to alert interested parties.

44. The warning system of claim 43 wherein the at least alert zone defined by the one set of coordinate pairs is predetermined alert zone.

45. The warning system of claim 43 wherein the at least alert zone defined by the at least one set of coordinate pairs is a variable alert zone.

46. The warning system of claim 43 wherein the warning device is attached to the vehicle.

47. The warning system of claim 43 wherein the warning device is stationary and is located at a stationary predetermined location.

48. The warning system of claim 47 comprising at least two alert zones and at least one stationary warning device in each alert zone,

wherein the host alert node is configured to determine whether the position of the vehicle corresponds to the coordinate pair from the set of coordinate pairs comprising one of the alert zones based on the wireless vehicle position information and wherein the alert information comprises alert zone information, the alert zone information including information identifying which alert zone the vehicle is in;

and

the warning alert response node is configured to output the alert activation signal to the stationary warning device located within the alert zone in which the vehicle is located.

49. The warning system of claim 43 wherein the wireless vehicle position information is transmitted to the host alert node through a network selected from the group of a cellular network, a satellite network and a local wireless network.

50. The warning system of claim 43 wherein the alert information is transmitted to the warning alert response node through a network selected from the group of a cellular network, a satellite network and a local wireless network.

51. The warning system of claim 43 wherein the wireless vehicle position information is transmitted to the host alert node through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

52. The warning system of claim 43 wherein the alert information is transmitted to the warning alert response node through a combination of at least two networks selected from the group of a cellular network, a satellite network and a local wireless network.

53. The warning system of claim 43 wherein the system further comprises

a satellite navigation system receiver configured to receive position information from a satellite navigation system network and communicate position information to the position transmitter.

54. The warning system of claim 53 wherein the satellite navigation system receiver is a GPS receiver and the satellite navigation system network is the GPS or similar network.

55. The warning system of claim 43 wherein the system comprises

a plurality of alert zones,

a plurality of warning alert response nodes and

a plurality of warning devices

wherein each of the plurality of warning alert response nodes is associated with one or more warning devices;

and

wherein at least one of the warning devices is associate with one of the plurality of alert zones;

wherein the host alert node further comprises

an alert zone storage medium storing the sets of coordinate pairs comprising the alert zones;

the host alert node is configured to analyze the wireless vehicle position information and determine whether the vehicle is located in any of the plurality of alert zones based at least in part on the wireless vehicle position information using the sets of coordinate pairs stored in the alert zone storage medium;

the host alert node is further configured to determine which of the plurality of warning alert response nodes should receive the alert information and to transmit the alert information to the appropriate warning alert response node.

56. the warning system of claim 55 wherein the alert zone storage medium is a Non-Volatile Random Access Memory (NVRAM).

57. The warning system of claim 55 wherein the alert zone storage medium is a Flash or similar memory.

58. The warning system of claim 55 wherein the alert zone storage medium is a hard drive.

59. The warning system of claim 55 wherein the alert zone storage medium is a DVD.