Information reporting multiplex system

• US 4,680,582 A
• Filed: 05/20/1981
• Issued: 07/14/1987
• Est. Priority Date: 07/15/1980
• Status: Expired due to Term

• Current Assignee: Honeywell Limited (Honeywell International Inc.)
• Original Assignee: Honeywell Limited (Honeywell International Inc.)
• Inventors: Mejia, Ezequiel
• Primary Examiner(s): Yusko, Donald J.
• Application Number:
  US06/265,478
• Time in Patent Office: 2,246 Days
• Field of Search: 340/825.17, 340/825.14, 340/518, 340/512, 340/825.13, 340/825.2, 340/514, 370/91, 455/58
• US Class Current: 340/3.21
• CPC Class Codes: G08B 26/004 with common interrogation of substations

Abstract

An information reporting system is disclosed wherein a plurality of remote stations each receive synchronization signals from a master station, the synchronization signals initiating a timing mechanism in each remote station for dictating the time slot in which each remote station can transmit its information, each time slot occurring at a substantially different point in time, a master station having a synchronization generator for generating the synchronization signals and an indicator for indicating the information received from the remote stations, and a communication channel for interconnecting the remote stations and the master station.

Claims

1. A system for reporting information comprising:

a plurality of remote stations each connected to at least one sensor and having a synchronization terminal for receiving periodic synchronization signals, a time slot generator connected to synchronization terminal for supplying an enabling signal at a predetermined amount of time after receiving a synchronization signal wherein the time slot for each station occurs at a substantially different time after receipt of a synchronization signal, a data terminal, and a transmit circuit connected to said time slot generator and to said sensor for supplying information derived from said sensor to said data terminal upon receiving said enabling signal;

a master station having a synchonization generator, a synchronization terminal connected to said synchronization generator for receiving synchronization signals therefrom, a data terminal, and information receiving means connected to said data terminal of said master station for receiving said information supplied by said plurality of remote stations; and

,

communication means interconnecting said data terminals and said synchronization terminals of said master station and said plurality of remote stations.

2. The system of claim 1 wherein said synchronization generator comprises an address generator connected to said information receiving means, said address generator generating addresses to synchronize the information received from each remote station to said information receiving means.

3. The system of claim 2 wherein each remote station comprises a code generator connected to said transmit circuit for encoding said information to be supplied to said master station.

4. The system of claim 3 wherein said master station comprises a code generator connected to said information receiving means for providing a code compatible with the code as supplied by the code generator of said remote station for decoding said information supplied to said master station by said remote stations.

5. The system of claim 4 wherein each remote station has terminal means for connection to plural sensors and said time slot generator comprises means of rcontrolling the transmit circuit so that the information derived from said plural sensors is transmitted within a time slot associated with a remote station and is formed of a plurality of bits in serial form, each bit corresponding to a particular sensor.

6. The system of claim 5 wherein said information receiving means comprises indicating means for displaying said information.

7. The system of claim 6 wherein said indicating means comprises bit display means for displaying the bits of information received from said remote stations and remote station display means for displaying the remote station transmitting the information, said bit display and said remote station display means being connected to said address generator of said master station for synchronizing the bit display means and the remote station display means to the information being received.

8. The system of claim 7 wherein said bit display means comprises at least a first group of indicators for indicating types of alarms and said remote station display means comprises at least a second group of indicators for indicating the remote stations generating said alarms such that said first and second groups of indicators together indicate the type of alarm and the remote station generating the alarm.

9. The system of claim 2 wherein each remote station has terminal means for connection to plural sensors and said time slot generator comprises means for controlling the transmit circuit so that the information derived from said plural sensors is transmitted within a time slot associated with a remote station and is formed of a plurality of bits in serial form, each bit corresponding to a particular sensor.

10. The system of claim 9 wherein said information receiving means comprises indicating means for displaying said information.

11. The system of claim 10 wherein said indicating means comprises bit display means for displaying the bits of information received from said remote stations and remote station display means for displaying the remote station transmitting the information, said bit display and said remote station display means being connected to said address generator of said master station for synchornizing the bit display means and the remote station display means to the information being received.

12. The system of claim 11 wherein said bit display means comprises at least a first group of indicators for indicating types of alarms and said remote station display means comprises at least a second group of indicators for indicating the remote stations generating said alarms such that said first and second groups of indicators together indicate the type of alarm and the remote station generating the alarm.

13. The system of claim 1 wherein each remote station comprises a code generator connected to said transmit circuit for encoding said information to be supplied to said master station.

14. The system of claim 13 wherein said master station comprises a code generator connected to said information receiving means for providing a code compatible with the code as supplied by the code generator of said remote station for decoding said information supplied to said master station by said remote stations.

15. The system of claim 14 wherein each remote station has terminal means for connection to plural sensors and said time slot generator comprises means for controlling the transmit circuit so that the information derived from said plural sensors is transmitted within a time slot associated with a remote station and is formed of a plurality of bits in serial form, each bit corresponding to a particular sensor.

16. The system of claim 15 wherein said information receiving means comprises indicating means for displaying said information.

17. The system of claim 16 wherein said indicating means comprises bit display means for displaying the bits of information receiving from said remote stations and remote station display means for displaying the remote station transmitting the information, said bit display and said remote station display means being connected to said address generator of said master station for synchronizing the bit display means and the remote station display means to the information being received.

18. The system of claim 17 wherein said bit display means comprises at least a first group of indicators for indicating types of alarms and said remote station display means comprises at least a second group of indicators for indicating the remote stations generating said alarms such that said first and second groups of indicators together indicate the type of alarm and the remote station generating the alarm.

19. The system of claim 1 wherein each remote station has terminal means for connection to plural sensors and said time slot generator comprises means for controlling the transmit circuit so that the information derived from said plural sensors is transmitted within a time slot associated with a remote station and is formed of a plurality of bits in serial form, each bit corresponding to a particular sensor.

20. The system of claim 19 wherein said information receiving means comprises indicating means for displaying said information.

21. The system of claim 20 wherein said indicating means comprises bit display means for displaying the bits of information received from said remote stations and remote station display means for displaying the remote station transmitting the information, said bit display and said remote station display means being connected to said address generator of said master station for synchronizing the bit display means and the remote station display means to the information being received.

22. The system of claim 21 wherein said bit display means comprises at least a first group of indicators for indicating types of alarms and said remote station display means comprises at least a second group of indicators for indicating the remote stations generating said alarms such that said first and second groups of indicators together indicate the type of alarm and the remote station generating the alarm.

23. The system of claim 1 wherein said information receiving means comprises indicating means for displaying said information.

24. The system of claim 23 wherein said indicating means comprises bit display means for displaying bits of information received from said remote stations and remote station display means for displaying the remote station transmitting the information, said bit display and said remote station display means being connected to said address generator of said master station for synchronizing the bit display means and the remote station display means to the information being received.

25. The system of claim 24 wherein said bit display means comprises at least a first group of indicators for indicating types of alarms and said remote station display means comprises at least a second group of indicators for indicating the remote stations generating said alarms such that said first and second groups of indicators together indicate the type of alarm and the remote station generating the alarm.

26. A system for reporting alarm information comprising:

a plurality of remote stations each connected to a plurality of alarm sensors and having a synchronization terminal for receiving periodic synchronization signals, a time slot generator connected to said synchronization terminal for supplying an enabling signal at a predetermined amount of time after receiving a synchronization signal wherein the time slot for each station occurs at a substantially different time after receipt of a synchronization signal, a data terminal, and a transmit circuit connected to said time slot generator and to each alarm sensor associated with said remote station for supplying a plurality of alarm bits, each bit corresponding to an alarm sensor, in serial form to said data terminal upon receiving said enabling signal;

a master station having a synchronization generator for supplying both synchronization signals and address signals, a synchronization terminal connected to said synchronization generator for receiving said synchronization signals, a data terminal, and indicating means connected to said data terminal of said master station and to said signal generator for receiving the addresses thereof for displaying said bits of alarm information supplied by said plurality of remote stations and said remote station identification, said addresses synchronizing said indicating means to said information received from said remote stations; and

, communication means interconnecting said data terminals and said synchronization terminal of said master station and said pluralunication means interconnecting said data terminals and said synchronization terminal of said master station and said plurality of remote stations.

27. The system of claim 26 wherein each remote station comprises a code generator connected to said transmit circuit for encoding said information to be supplied to said master station.

28. The system of claim 27 wherein said master station comprises a code generator connected to said indicating means for providing the same code as the code generator with respect to said remote station for decoding said information supplied to said master station by said remote stations.