Supervised, interactive alarm reporting system

• US 4,868,859 A
• Filed: 06/12/1987
• Issued: 09/19/1989
• Est. Priority Date: 06/12/1987
• Status: Expired due to Fees

• Current Assignee: Versus Technology, Inc. (Midmark Corporation)
• Original Assignee: BT Telecom Incorporated (Midmark Corporation)
• Inventors: Sheffer, Eliezer A.
• Primary Examiner(s): George, Keith E.
• Application Number:
  US07/062,174
• Time in Patent Office: 830 Days
• Field of Search: 379/37, 379/39, 379/40, 379/42-44, 379/46-51, 379/59, 379/60, 379/32, 379/33, 379/38
• US Class Current: 379/39
• CPC Class Codes: G08B 25/08 using communication transmission lines G08B13/19658, G08B21/0286, G08B25/016 take precedence
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence
• CPC Class Codes: G08B 29/16 Security signalling or alarm systems, e.g. redundant systems

Abstract

A supervised, interactive alarm reporting system includes a local terminal comprised of a supervised derived channel communicator, and a one-way radio communicator (preferably via the cellular telephone network), which are connected by a control unit which provides for interactive operation of the derived channel unit and the radio transmitter according to alarm conditions which may arise at the premises, and the existing condition of the equipment comprising the local terminal unit. The local terminal unit is capable of communicating with a central monitoring facility, or mobile units (patrol vehicles or service vehicles) associated with the central monitoring facility, for enhanced security of the monitored premises. Also an alarm reporting system for a mobile site including a local terminal which communicates with a monitoring facility (fixed or mobile) via the cellular telephone network.

Claims

1. A supervised, interactive alarm reporting system for providing communication between one or more event sensors associated with a premises, and a central facility for monitoring sensors at said premises, comprising:

first means for establishing communication between said sensors and said central facility using wired communicating lines;

second means for establishing communication between said sensors and said central facility using radio transmission; and

means connecting said first means and said second means for controlling operation of the first means and the second means according to the condition of at least said first means, independent of the condition of said one or more event sensors;

wherein said first means is a derived channel unit and said second means is a radio transmitter, and wherein said connecting means operates to establish communication with said central facility using said derived channel unit during normal operating conditions;

wherein said derived channel unit is coupled with means for determining a fault in communication with said central facility, and for providing said connecting means with a fault signal for causing said radio transmitter to operate;

wherein said connecting means continues to operate said radio transmitter in the presence of said fault signal to provide periodic radio transmission according to a preselected timing sequence; and

wherein said central facility includes means for searching for said periodic radio transmission responsive to the detection of said fault in communication.

2. The system of claim 1 wherein said derived channel unit is supervised.

3. The system of claim 1 wherein said first means operates via a switched telephone line network.

4. The system of claim 1 wherein said second means is unsupervised.

5. The system of claim 4 wherein said second means is a transmitter only.

6. The system of claim 4 wherein said second means operates via a cellular telephone network.

7. The system of claim 1 wherein said communication is supervised by said central facility.

8. The system of claim 1 wherein said connecting means operates to establish communication with said central facility using said radio transmitter, during a sensed alarm event.

9. The system of claim 1 wherein said continued operation includes a radio transmission occurring responsive to a sensed alarm event.

10. The system of claim 1 wherein said preselected timing sequence is variable in frequency and duration.

11. The system of claim 1 wherein said searching is accomplished by means for determining the coincidence of said periodic radio transmission and said preselected timing sequence.

12. The system of claim 1 wherein said derived channel unit includes means for resetting said connecting means upon cessation of said fault in communications with said central facility, returning said system to said normal operating conditions.

13. The system of claim 1 wherein said central facility is fixed in location.

14. The system of claim 13 which further includes a mobile unit in communication with said alarm reporting system.

15. The system of claim 14 wherein said mobile unit is in communication with the second means of said alarm reporting system.

16. The system of claim 14 wherein said mobile unit is in communication with said central facility.

17. The system of claim 1 wherein said connecting means includes means for selecting between said first means and said second means, irrespective of the condition of said one or more event sensors.

18. The system of claim 1 wherein said connecting means controls the operation of said first means and said second means at times other than an event sensed by said one or more event sensors.

19. The system of claim 18 wherein said sensed event is a fault in said one or more event sensors.

20. The system of claim 1 which further includes means for testing said alarm reporting system from said central facility.

21. The system of claim 20 wherein said radio transmitter is tested from said central facility.

22. The system of claim 20 wherein said derived channel unit is tested from said central facility.

23. The system of claim 1 wherein said one or more event sensors are simultaneously connected with said first means and said second means.

24. A supervised, interactive alarm reporting system for providing communication between one or more event sensors associated with a premises, and a central facility for monitoring sensors at said premises, comprising:

first means for establishing communication between said sensors and said central facility using wired communicating lines;

second means for establishing communication between said sensors and said central facility using radio transmissions; and

means connecting said first means and said second means for controlling operation of the first means and the second means according to the condition of at least said first means, independent of the condition of said one or more event sensors;

wherein said first means is a derived channel unit and said second means is a radio transmitter, and wherein said connecting means operates to establish communication with said central facility using said derived channel unit during normal operating conditions; and

wherein said connecting means includes means for periodically testing said radio transmitter responsive to periodic testing associated with said derived channel unit.

25. The system of claim 24 wherein said testing is performed from said central facility.