Method and apparatus for global position responsive security system

• US 5,648,763 A
• Filed: 10/05/1992
• Issued: 07/15/1997
• Est. Priority Date: 10/05/1992
• Status: Expired due to Fees

• Current Assignee: Erudite Systems, Inc.
• Original Assignee: Trimble Navigation Limited (Trimble Inc.)
• Inventors: Long, George E.
• Primary Examiner(s): Horabik, Michael
• Application Number:
  US07/956,372
• Time in Patent Office: 1,744 Days
• Field of Search: 340/825.49, 340/825.31, 340/825.35, 340/825.75, 379/44, 379/59, 379/58
• US Class Current: 340/5.73
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G08B 13/22 Electrical actuation

Abstract

A method and apparatus for use in a security system for controlling access to mobile enclosures and cargo containers. Navigtational tracking systems such as LORAN and Global Positioning Systems are used to produce a real time geographic position signal. A programmable data processor is used to compare a preset geographic position signal to the real time geographic position signal. Upon favorable comparison of the real time and preset signals, an enabling signal is produced which permits operation of the security system to gain access to the container.

Claims

1. In a security system for a mobile unit, said mobile unit including enabling signal responsive security apparatus for actuation to perform a predetermined function only at a preset geographical location, the combination comprising;

a navigational system associated with said mobile unit for receiving geographic position information from an existing external navigational transmitter representative of the geographic position of said mobile unit, and

programmable comparator means connected to said navigational system for receiving geographic position information therefrom and comparing said received information with stored preset geographic position information,

said comparator including means to produce a security system enabling signal when said preset position information matches said received geographic position information in a predetermined manner.

2. The combination of claim 1, wherein said navigational system comprises a Global Positioning System for receiving and interpreting geographic position information from a plurality of satellites whose orbital paths are known.

3. The combination of claim 1, wherein said navigational system comprises a LORAN system for receiving and interpreting geographic position information from a plurality of transmitters whose geographic positions are known.

4. The combination of claim 1, wherein said security apparatus includes a latching mechanism for said mobile unit that may be activated to prevent access to a selected portion of said mobile unit and may be inactivated to allow access to said selected portion of said mobile unit, wherein receipt by said latching mechanism of said security system enabling signal from said comparator means inactivates said latching mechanism if said latching mechanism has been activated.

5. A security system for a mobile container comprising in combination;

a navigational system on said container for producing real time geographical position information signals,

programmable data processing means for storing preset geographical position information signals,

said data processing means being connected to receive real time geographical position signals from said navigational system and producing an enabling signal upon favorable comparison of the real time and preset signals, and

locking means responsive to said enabling signal for permitting access to said container.

6. The combination of claim 5, wherein said navigational system comprises a Global Positioning System for receiving and interpreting geographic position information from a plurality of satellites whose orbital paths are known.

7. The combination of claim 5, wherein said navigational system comprises a LORAN system for receiving and interpreting geographic position information from a plurality of transmitters whose geographic positions are known.

8. A method for operating a security apparatus on a mobile unit comprising the steps of;

storing preset geographic position information on said mobile unit representing the geographic position of the desired destination for said unit,

receiving geographic position information from an existing navigational system indicating the geographic position of said mobile unit,

comparing the preset positional information with the received geographic position information and producing a security apparatus enabling signal when said preset position information matches said received geographic position information in a predetermined manner, and

applying said enabling signal to control said security apparatus,

whereby said security apparatus may be controlled only when the mobile unit arrives at said desired destination.

9. The method of claim 8 wherein said navigational system comprises a Global Positioning System for receiving and interpreting geographic position information from a plurality of satellites whose orbital paths are known.

10. The method of claim 8 wherein said navigational system comprises a LORAN system for receiving and interpreting geographic position information from a plurality of transmitters whose geographic positions are known.

11. The method of claim 8 wherein said security apparatus includes a latching mechanism for said mobile unit that may be activated to prevent access to a selected portion of said mobile unit and may be inactivated to allow access to said selected portion of said mobile unit, and including the step of;

applying said security apparatus enabling signal from said comparator means to said latching mechanism to inactivate said latching mechanism if said latching mechanism has been activated.

12. A method for securing access to a mobile container comprising the steps of;

producing real time geographic position information signals indicating the position of said container,

storing preset geographic position information signals,

comparing said real time signals with said preset signals to produce an enabling signal upon favorable comparison, and

operating a locking mechanism responsive to said enabling signal for permitting access to said container.

13. The method of claim 12 wherein said real time geographic position information signal is produced by a Global Positioning System.

14. The method of claim 13 wherein said real time geographic position information signal is produced by a LORAN system.

15. In a security system for a mobile unit, said mobile unit including enabling signal responsive security apparatus for actuation to perform a predetermined function only at a preset geographical location, the combination comprising;

a navigational system associated with said mobile unit for producing real time geographical position information signals, and

programmable data processing means for storing preset geographical position information signals,

said data processing means being connected to receive real time geographical position signals from said navigational system and producing a security system enabling signal upon favorable comparison of the real time and preset signals.

16. A method for operating a security apparatus on a mobile unit comprising the steps of;

storing preset geographic position information signals,

producing real time geographic position information signals indicating the position of said container,

comparing said real time signals with said preset signals to produce a security apparatus enabling signal upon favorable comparison, and

applying said enabling signal to control said security apparatus,

whereby said security apparatus may be controlled only when the mobile unit arrives at a preset geographic destination.