Worksite proximity warning

{
  "publication_number": "US9269255B2",
  "country": "US",
  "kind": "B2",
  "title": "Worksite proximity warning",
  "abstract": "Systems and methods for warning of proximity in a worksite are disclosed. A second transceiver is detected at a first transceiver, wherein the first transceiver is a mobile wearable device, and wherein the first transceiver and the second transceiver are located at a worksite. An ad-hoc network is established, at the first transceiver, between the first transceiver and the second transceiver. A distance is calculated, at the first transceiver, in three dimensions between the first transceiver and the second transceiver based on the detecting the second transceiver. A first safety envelope is defined, at the first transceiver, about the first transceiver and a second safety envelope about the second transceiver. An alarm is issued, at the first transceiver, when the first safety envelope comes in contact with the second safety envelope.",
  "claims": [
    "1. A method for warning of proximity in a worksite, said method comprising: detecting, by a processor of a first transceiver, a second transceiver, wherein said first transceiver is a mobile wearable device, and wherein said first transceiver and said second transceiver are located at a worksite; establishing, by said processor of said first transceiver, an ad-hoc network between said first transceiver and said second transceiver; calculating, by said processor of said first transceiver, a distance in three dimensions between said first transceiver and said second transceiver based on said detecting said second transceiver and based on distance information shared between said first transceiver and said second transceiver; defining, by said processor of said first transceiver, a first safety envelope about said first transceiver and a second safety envelope about said second transceiver; and said first transceiver issuing an alarm, when said first safety envelope comes in contact with said second safety envelope.",
    "2. The method as recited in claim 1 wherein said ad-hoc network comprises a plurality of transceivers in addition to said first transceiver and said second transceiver.",
    "3. The method as recited in claim 1 wherein said first transceiver is associated with an object that is wearable by a person located in said worksite wherein said object is selected from the group of objects consisting of: a helmet, a vest, a belt, a headset, and an article of clothing.",
    "4. The method as recited in claim 1 wherein said second transceiver is a worksite object selected from the group of worksite objects consisting of: a person, a piece of equipment, a crane, a vehicle, a tree, a building, and a partially constructed structure.",
    "5. The method as recited in claim 1 wherein said alarm is selected from the group of alarms consisting of: an audible sound, a visible light, a flashing light, and a visual display.",
    "6. The method as recited in claim 1 wherein said issuing said alarm simultaneously occurs at said first transceiver and said second transceiver.",
    "7. The method as recited in claim 1 wherein an intensity of said alarm increases until said first safety envelope is no longer in contact with said second safety envelope.",
    "8. The method as recited in claim 1 wherein said first transceiver and said second transceiver employ wideband to communicate.",
    "9. The method as recited in claim 1 wherein said first transceiver and said second transceiver employ 900 megahertz (MHz) to communicate.",
    "10. A non-transitory computer-usable storage medium having instructions embodied therein that when executed cause a computer system to perform a method for warning of proximity in a worksite, said method comprising: detecting, by a processor of first transceiver, a second transceiver, wherein said first transceiver is a mobile wearable device, and wherein said first transceiver and said second transceiver are located at a worksite; establishing, by said processor of said first transceiver, an ad-hoc network between said first transceiver and said second transceiver; calculating, by said processor of said first transceiver, a distance in three dimensions between said first transceiver and said second transceiver based on said detecting said second transceiver and based on distance information shared between said first transceiver and said second transceiver; defining, by said processor of said first transceiver, a first safety envelope about said first transceiver and a second safety envelope about said second transceiver; and said first transceiver issuing an alarm, when said first safety envelope comes in contact with said second safety envelope.",
    "11. The non-transitory computer-usable storage medium as recited in claim 10 wherein said ad-hoc network comprises a plurality of transceivers in addition to said first transceiver and said second transceiver.",
    "12. The non-transitory computer-usable storage medium as recited in claim 10 wherein said first transceiver is associated with an object that is wearable by a person located in said worksite wherein said object is selected from the group of objects consisting of: a helmet, a vest, a belt, a headset, and an article of clothing.",
    "13. The non-transitory computer-usable storage medium as recited in claim 10 wherein said second transceiver is a worksite object selected from the group of worksite objects consisting of: a person, a piece of equipment, a crane, a vehicle, a tree, a building, and a partially constructed structure.",
    "14. The non-transitory computer-usable storage medium as recited in claim 10 wherein said alarm is selected from the group of alarms consisting of: an audible sound, a visible light, a flashing light, and a visual display.",
    "15. The non-transitory computer-usable storage medium as recited in claim 10 wherein said issuing said alarm simultaneously occurs at said first transceiver and said second transceiver.",
    "16. The non-transitory computer-usable storage medium as recited in claim 10 wherein an intensity of said alarm increases until said first safety envelope is no longer in contact with said second safety envelope.",
    "17. The non-transitory computer-usable storage medium as recited in claim 10 wherein said first transceiver and said second transceiver employ wideband to communicate.",
    "18. The non-transitory computer-usable storage medium as recited in claim 10 wherein said first transceiver and said second transceiver employ 900 megahertz (MHz) to communicate.",
    "19. A transceiver for warning of proximity in a worksite, said transceiver comprising: a memory for storing a predetermined distance defining a first safety envelope about said transceiver, wherein said transceiver is a mobile wearable device located in said worksite; a receiver for receiving a signal from a second transceiver and establishing an ad hoc network with between said transceiver and said second transceiver; a processor for calculating a distance in three dimensions between said transceiver and said second transceiver based on said signal from said second transceiver and based on distance information shared between said transceiver and said second transceiver; and an alarm component for issuing an alarm when said first safety envelope comes in contact with a second safety envelope defined about said second transceiver.",
    "20. A method for warning of proximity in a worksite, said method comprising: detecting by a processor of a base station, a first transceiver and a second transceiver, wherein said first transceiver is a mobile wearable device, and wherein said first transceiver, said second transceiver, and said base station are located at a worksite; calculating, by said processor of said base station, a distance in three dimensions between said first transceiver and said second transceiver based on said detecting said first transceiver and second transceiver and based on distance information shared between said first transceiver and said second transceiver; defining, by said processor of said base station, a first safety envelope about said first transceiver and a second safety envelope about said second transceiver; and said base station sending a command to said first transceiver to issue an alarm at said first transceiver when said first safety envelope comes in contact with said second safety envelope.",
    "21. The method as recited in claim 20 wherein said base station detects a plurality of transceivers each with a safety envelope in addition to said first transceiver and said second transceiver.",
    "22. The method as recited in claim 20 wherein said first transceiver is associated with an object that is wearable by a person located in said worksite wherein said object is selected from the group of objects consisting of: a helmet, a vest, a belt, a headset, and an article of clothing.",
    "23. The method as recited in claim 20 wherein said second transceiver is a worksite object selected from the group of worksite objects consisting of: a person, a piece of equipment, a crane, a vehicle, a tree, a building, and a partially constructed structure.",
    "24. The method as recited in claim 20 wherein said alarm is selected from the group of alarms consisting of: an audible sound, a visible light, a flashing light, and a visual display.",
    "25. The method as recited in claim 20 wherein said sending said command sends commands to issue alarms to simultaneously occur at said first transceiver and said second transceiver.",
    "26. The method as recited in claim 20 wherein an intensity of said alarm increases until said first safety envelope is no longer in contact with said second safety envelope.",
    "27. The method as recited in claim 20 wherein said first transceiver and said second transceiver employ wideband to communicate.",
    "28. The method as recited in claim 20 wherein said first transceiver and said second transceiver employ 900 megahertz (MHz) to communicate.",
    "29. A non-transitory computer-usable storage medium having instructions embodied therein that when executed cause a computer system to perform a method for warning of proximity in a worksite, said method comprising: detecting by a processor of a base station a first transceiver and a second transceiver at a base station, wherein said first transceiver is a mobile wearable device, and wherein said first transceiver, said second transceiver, and said base station are located at a worksite; calculating, by said processor of said base station, a distance in three dimensions between said first transceiver and said second transceiver based on said detecting said first transceiver and second transceiver and based on distance information shared between said first transceiver and said second transceiver; defining, by said processor of said base station, a first safety envelope about said first transceiver and a second safety envelope about said second transceiver; and said base station sending a command to said first transceiver, to issue an alarm at said first transceiver when said first safety envelope comes in contact with said second safety envelope.",
    "30. The non-transitory computer-usable storage medium as recited in claim 29 wherein said base station detects a plurality of transceivers each with a safety envelope in addition to said first transceiver and said second transceiver.",
    "31. The non-transitory computer-usable storage medium as recited in claim 29 wherein said first transceiver is associated with an object that is wearable by a person located in said worksite wherein said object is selected from the group of objects consisting of: a helmet, a vest, a belt, a headset, and an article of clothing.",
    "32. The non-transitory computer-usable storage medium as recited in claim 29 wherein said second transceiver is a worksite object selected from the group of worksite objects consisting of: a person, a piece of equipment, a crane, a vehicle, a tree, a building, and a partially constructed structure.",
    "33. The non-transitory computer-usable storage medium as recited in claim 29 wherein said alarm is selected from the group of alarms consisting of: an audible sound, a visible light, a flashing light, and a visual display.",
    "34. The non-transitory computer-usable storage medium as recited in claim 29 wherein said sending said command sends commands to issue alarms to simultaneously occur at said first transceiver and said second transceiver.",
    "35. The non-transitory computer-usable storage medium as recited in claim 29 wherein an intensity of said alarm increases until said first safety envelope is no longer in contact with said second safety envelope.",
    "36. The non-transitory computer-usable storage medium as recited in claim 29 wherein said first transceiver and said second transceiver employ wideband to communicate.",
    "37. The non-transitory computer-usable storage medium as recited in claim 29 wherein said first transceiver and said second transceiver employ 900 megahertz (MHz) to communicate."
  ],
  "description_excerpt": "CROSS-REFERENCE TO RELATED U.S. APPLICATIONS This application claims the benefit of and claims priority to U.S. Provisional Patent Application No. 61/940,884, entitled “METHOD AND TRANSCEIVER FOR PREVENTING ACCIDENTAL COLLISIONS,” with filing date of Feb. 18, 2014 and is incorporated by reference in its entirety. This application is also a continuation-in-part application of and claims the benefit of the co-pending U.S. patent application Ser. No. 14/171,489, entitled “SENSOR UNIT SYSTEM,” with filing date Feb. 3, 2014. U.S. patent application Ser. No. 14/171,489 is a continuation application of and claims the benefit of the then co-pending U.S. patent application Ser. No. 13/708,843, entitled “SENSOR UNIT SYSTEM,” with filing date Dec. 7, 2012, by Gregory C. Best et al.; U.S. patent application Ser. No. 13/708,843 is assigned to the assignee of the present application and was incorporated by reference in its entirety into U.S. patent application Ser. No. 14/171,489. U.S. patent application Ser. No. 13/708,843 is a continuation-in-part application of and claims the benefit of then co-pending U.S. patent application Ser. No. 13/017,320, entitled “SENSOR UNIT SYSTEM,” with filing date Jan. 31, 2011; U.S. patent application Ser. No. 13/017,320 is assigned to the assignee of the present application and was incorporated by reference in its entirety into U.S. patent application Ser. No. 13/708,843.\n\nThe application with U.S. application Ser. No. 13/017,320 claims the benefit of and claims priority to U.S. Provisional Patent Application No.",
  "cpc": [
    "G08B 21/182",
    "B66C 13/40",
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    "B66C 15/045",
    "B66C 15/065",
    "G01S 13/06",
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    "G01S 2205/01",
    "G01S 5/0284"
  ],
  "ipc": [
    "B66C 13/40",
    "B66C 13/46",
    "B66C 15/04",
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    "G01S 13/06",
    "G01S 13/93",
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    "G06F 19/00",
    "G08B 1/08",
    "G08B 21/18"
  ],
  "assignees": [
    "TRIMBLE NAVIGATION LTD"
  ],
  "inventors": [
    "BEAULIEU ERIC",
    "BEST GREGORY C",
    "MAYNARD KURTIS L",
    "CAMERON JOHN F"
  ],
  "filing_date": "2015-02-17",
  "publication_date": "2016-02-23",
  "grant_date": "2016-02-23",
  "priority_date": "2010-02-01",
  "application_number": "US-201514624514-A",
  "family_id": "53271734",
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}