Claims
- 1. A method of improving the safety of a group of members in a territory, the method comprising:
providing to each member a transmitter and a receiver to transmit and receive an RF signal such that each member can inform other members of its presence in a pre-determined range, and can be informed of the presence of other members by detecting the RF signal emitted by other members located in the range, the receiver further providing an alarm signal to warn of said presence; observing the members in the territory and determining if the alarm signal has been provided for the observed members; and when the alarm has not been provided, notifying the observed members of failure to receive the RF signal, therefore increasing the safety level of the group of members within the territory.
- 2. The method as claimed in claim 1, wherein said increasing the safety level of the territory comprises reducing the risks of collisions between members in the territory by providing the alarm when members are in a range typically greater than twice the stopping distance of a member urged to stop.
- 3. The method as claimed in claim 1, wherein said members comprise mobile vehicles.
- 4. The method as claimed in claim 1, wherein said members comprise pedestrians.
- 5. The method as claimed in claim 1, wherein said RF signal comprises an omni-directional RF signal.
- 6. The method as claimed in claim 1, wherein said RF signal comprises an essentially continuous signal.
- 7. The method as claimed in claim 1, wherein transmit and receive a RF signal comprises transmitting at random intervals bursts of the RF signal and receiving while not transmitting, therefore transmit and receive alternately said RF signal in a pseudo-random pattern.
- 8. The method as claimed in claim 1, wherein said alarm signal comprises an audio signal.
- 9. The method as claimed in claim 1, wherein said alarm signal comprises a visual signal.
- 10. The method as claimed in claim 1, wherein said observing and determining comprises having a member of said group patrolling the territory.
- 11. The method as claimed in claim 10, wherein said member of said group patrolling said territory is only receiving said RF signal.
- 12. The method as claimed in claim 1, wherein said observing and determining comprises detecting the movement of the members with a device, located on said territory, wherein said devices comprises a movement detector and the receiver to receive the RF signal.
- 13. The method as claimed in claim 1, wherein said observing and determining comprises detecting the members with a device, located on said territory, wherein said device comprises a camera and the receiver to receive the RF signal.
- 14. The method as claimed in claim 1, wherein said observing and determining further comprises determining if said observed members are moving with a speed within admissible limits.
- 15. The method as claimed in claim 1, wherein said notifying comprises sending a RF alert signal that can be detected with said means to receive.
- 16. The method as claimed in claim 1 further informing a member of the range of another member, by:
establishing the range by evaluating, after detecting, the RF signal emitted by said another member, displaying the range value to said member.
- 17. The method as claimed in claim 16, wherein said establishing the range by evaluating, after detecting, the RF signal emitted by said another member comprises:
detecting the power level of the RF signal emitted by said another member; comparing said power level to a known value corresponding to the power level of said signal at the transmitter, and establishing from said comparison the range separating members.
- 18. The method as claimed in claim 1, wherein said RF signal comprises a power identifying code that specifies at which power range the RF signal is transmitted.
- 19. The method as claimed in claim 18, further informing a member of the range of another member, by:
establishing the range by evaluating, after detecting, the power identifying code in the RF signal emitted by said another member, displaying the range value to said member.
- 20. The method as claimed in claim 1, wherein said RF signal comprises an identifying code which identifies said members.
- 21. The method as claimed in claim 20, further comprising identifying said members when in said range while receiving said RF signal emitted by said members.
- 22. The method as claimed in claim 1, further comprising traveling in said territory at a speed and attention level corresponding to being without concerns of having a collision with another member of said group and then, once until informed of said presence of other member in said distance by said alarm, reducing speed and increasing attention level.
- 23. The method as claimed in claim 1, further comprising imposing fines and enforcement rules to said member of failure to transmit.
- 24. The method as claimed in claim 23, wherein comprising expelling form said territory said member for failure to transmit.
- 25. The method as claimed in claim 1, further comprising transmitting in said RF signal an information on the status of the member which is transmitting.
- 26. The method as claimed in claim 25, wherein transmitting said information on the status comprises choosing among a plurality of statuses having been pre-determined.
- 27. The method as claimed in claim 25, wherein said information on the status comprises an alert signal indicating a danger status.
- 28. The method as claimed in claim 27, wherein said observing and determining further comprises localizing a member in danger with the help of receiving said alert signal.
- 29. The method as claimed in claim 1, further comprising:
observing the territory for detecting a presence of a target and monitoring a RF target signal transmitted by said target; and determining if the alarm signal has been provided for the observed target.
- 30. The method as claimed in claim 29, further comprising notifying said target, in the case where it cannot be detected by another member in said range, of failure to transmit.
- 31. The method as claimed in claim 30, further comprising expelling said target form said territory for failure to transmit.
- 32. The method as claimed in claim 30, further comprising notifying members of the group of the presence of said target.
- 33. The method as claimed in claim 1 further comprising:
providing to at least one object located on said territory said means to transmit a RF signal such that said object is transmitting an object RF signal and said members can be informed of the presence of said at least one object in a pre-determined range while detecting said RF signal emitted by said at least one object.
- 34. The method as claimed in claim 33, wherein said object comprises a road signal indication.
- 35. The method as claimed in claim 33, wherein said object RF signal emitted by said at least one object comprises an identification code which identifies said at least one object.
- 36. The method as claimed in claim 35 further comprising identifying said at least one object when in said range while receiving said RF signal emitted by said at least one object.
- 37. The method as claimed in claim 33 further comprising transmitting in said RF signal emitted by said at least one object an information status.
- 38. The method as claimed in claim 37, wherein said information status comprises an alert signal indicating a danger status
- 39. The method as claimed in claim 33 further comprising:
verifying that said at least one object located on said territory is transmitting said object RF signal by monitoring said object RF signal, therefore assuring that said group of members can be informed of the presence of said object.
- 40. A method of proximity detection, the method comprising:
transmitting at random intervals burst of a RF signal at a power level; receiving, while not transmitting, a received RF signal; detecting said received RF signal emitted by a target when in range; and providing an alarm signal to warn of the proximity of said target.
- 41. The claim as claimed in claim 40, wherein said RF signal comprises an RF frequency modulated signal in which is encoded information identifying the transmitter, and wherein said information is displayed.
- 42. The claim as claimed in claim 40, wherein said RF signal comprises an RF frequency modulated signal in which is encoded information about the status of the transmitter, and wherein said alarm signal communicates the information about the status.
- 43. The claim as claimed in claim 40, wherein said transmitting at random intervals burst a RF signal comprises transmitting alternately at two different power levels corresponding to a short range signal and to a long range signal.
- 44. The claim as claimed in claim 43, wherein said providing an alarm signal comprises identifying said short or long range.
- 45. The claim as claimed in claim 43, wherein said RF signal comprises an RF frequency modulated signal in which is encoded information about the signal power, and wherein said alarm signal identifies said corresponding short or long range.
- 46. The claim as claimed in claim 40, wherein said burst of RF signal comprises burst duration of 20 ms, 1 to 3 mW of peak power, for an average transmitting power below 0.75 mW.
- 47. The claim as claimed in claim 40, wherein said target comprises a vehicle.
- 48. The claim as claimed in claim 40, wherein said target comprises a pedestrian.
- 49. The claim as claimed in claim 40, wherein said RF signal comprises an omni-directional signal.
- 50. A method of improving the safety of a group of members in a territory, the method comprising:
providing to each member a transmitter and a receiver to transmit and receive an RF signal, wherein said RF signal comprises information on the status of the member, and providing a plurality of statuses among which the member selects one that corresponds to his status, such that each member can inform other members of his presence in a pre-determined range and of his status, and can be informed of a proximity and of the status of other members by detecting the RF signal emitted by other members located in said range; providing to each member an alarm signal as a function of the status transmitted by another member in said range and as a function of the proximity, enabling each member to evaluate from the alarm signal the potential danger associated with another member.
- 51. The method as claimed in claim 50, wherein said plurality of statuses comprises an emergency status.
- 52. The method as claimed in claim 50 wherein said transmit an RF signal comprises transmitting alternately at two different power levels corresponding to a short range signal and to a long range signal and wherein said proximity is determined by assessing the power level of the RF signal.
- 53. The method as claimed in claim 50 wherein said proximity is determined from a GPS signal.
- 54. The method as claimed in claim 50 wherein said group of members in a territory comprises a float of logging truckers evolving in a forestry and wherein each logging trucker informs the others of its loading status by selecting the appropriate status.
Priority Claims (1)
Number |
Date |
Country |
Kind |
GB 2003 000006898 |
Mar 2003 |
GB |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority of application number GB200300000689 filed on Mar. 26, 2003 and U.S. provisional application, Serial number unknown, filed on Feb. 26, 2004.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60547427 |
Feb 2004 |
US |