OPTICAL RELAYING R-TYPE AND GR-TYPE RECEIVER SYSTEM

• US 20120033977A1
• Filed: 04/08/2010
• Published: 02/09/2012
• Est. Priority Date: 11/18/2009
• Status: Active Grant

• Current Assignee: Hyundai Infracore Company Limited
• Original Assignee: Hyundai Infracore Company Limited
• Inventors: Yang, Jong Suck
• Granted Patent: US 8,744,264 B2
• Time in Patent Office: Days
• US Class Current: 398/115
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: G08B 25/009 Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range
• CPC Class Codes: H04B 10/25 Arrangements specific to fibre transmission

Abstract

Some embodiments of R/GR type fire alarm control system according to the invention comprises a plurality of detectors/transmitters for issuing alarm signals, a plurality of fire safety equipments for operating under control signals, a plurality of optical repeaters and an R/GR type fire alarm control panel. The optical repeaters are connected to each other in daisy-chain and connected to the plurality of the detectors/transmitters and the fire safety equipments, optically transmits the alarm signals upwardly and optically transmits the control signals downwardly, and are capable of electrically transacting the alarm signals with respect to the detectors/transmitters and the control signals with respect to the fire safety equipments. The R/GR type fire alarm control panel receives the alarm signals from one of the optical repeaters and transmits the control signals to one of the optical repeaters.

Claims

1. An optical signal converter, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel such that the optical signal converters be coupled in daisy-chain, the optical signal converter comprising:

an upstream signal path for electrically combining an electric signal, electrically converted from an optical signal optically received from a next optical converter connected in daisy-chain, and an alarm signal, originated from at least one of the multiple detectors/transmitters, so as to output an optical signal optically converted from the electrically combined signal;

a downstream signal path for electrically converting an optical signal optically received from a previous optical converter connected in daisy-chain, and then for optically reconverting the electrically converted signal so as to output the optical signal; and

an I/O port for providing the alarm signal received from at least one of the multiple detectors/transmitters to the upstream signal path and for externally outputting the electrically converted signal from the downstream signal path,

wherein the optical signal passing through the upstream signal path is eventually destined to the R/GR type fire alarm control panel through the daisy-chain, and wherein the optical signal passing through the downstream signal path is originated from the R/GR type fire alarm control panel.

2. The optical signal converter of claim 1, wherein the upstream signal path comprises:

a first optical input port for producing the electric signal electrically converted from the optical signal from the next optical signal converter connected in daisy-chain;

an upstream branch for combining the electric signal from the first optical input port and the alarm signal originated from the detectors/transmitters, so as to produce the electrically combined signal; and

a first optical output port for producing the optical signal optically converted from the electrically combined signal from the upstream branch.

3. The optical signal converter of claim 2, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical input port and a conductive line carrying the alarm signal from the I/O port.

4. The optical signal converter of claim 2, wherein the upstream branch comprises an adjustment circuit for delaying one of the electric signal from the first optical input port and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

5. The optical signal converter of claim 2, wherein the upstream branch comprises a packet encoder for encoding a combined packet when the electric signal from the first optical input port and the alarm signal from the detectors/transmitters arrive simultaneously.

6. The optical signal converter of claim 1, wherein the I/O port comprises:

an input port for receiving a differential alarm signal satisfying RS485 or RS422 specification or a DC 24 V alarm signal from the detectors/transmitters, and for converting to a single-ended alarm signal to be provided to the upstream signal path; and

an output port for converting the electrically converted signal from the downstream signal path to a differential signal satisfying RS485 or RS422 specification or a DC 24 V signal to be output externally.

7. The optical signal converter of claim 1, wherein the downstream signal path comprises:

a second optical input port for producing the electrically converted signal from the optical signal optically received from a previous optical converter connected in daisy-chain; and

a downstream branch for forking the electrically converted signal from the second optical input port to the I/O port and a second optical output port,

wherein the second optical output port optically converts the electrically converted signal from the downstream branch to be output externally.

8. The optical signal converter of claim 7, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical input port and a conductive line to the I/O port.

9. The optical signal converter of claim 7, wherein the downstream branch comprises a detection circuit for detecting a control signal in the electrically converted signal from the second optical input port to be transmitted to one of the fire safety equipments, and for outputting the control signal to the I/O port.

10. An optical signal repeater, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel with optical cables in daisy-chain, comprising:

an upstream signal path for electrically combining an electric signal, electrically converted from an optical signal optically received from a next optical converter connected in daisy-chain, and an alarm signal, originated from at least one of the multiple detectors/transmitters, so as to output an optical signal optically converted from the electrically combined signal;

a downstream signal path for electrically converting an optical signal optically received from a previous optical converter connected in daisy-chain, and then for optically reconverting the electrically converted signal so as to output the optical signal; and

a repeating controller for providing the alarm signal from an I/O port to the upstream signal path and for extracting a control signal in the electric signal from the downstream signal path to be transmitted to the I/O port,

wherein the I/O port provides the alarm signal received from at least one of the multiple detectors/transmitters to the upstream signal path and for externally outputting the control signal to corresponding fire safety equipments, and

wherein the optical signal passing through the upstream signal path is eventually destined to the R/GR type fire alarm control panel through the daisy-chain, and wherein the optical signal passing through the downstream signal path is originated from the R/GR type fire alarm control panel.

11. The optical signal repeater of claim 10, wherein the upstream signal path comprises:

a first optical input port for producing the electric signal electrically converted from the optical signal from the next optical signal converter connected in daisy-chain;

an upstream branch for combining the electric signal from the first optical input port and the alarm signal originated from the detectors/transmitters, so as to produce the electrically combined signal; and

a first optical output port for producing the optical signal optically converted from the electrically combined signal from the upstream branch.

12. The optical signal repeater of claim 11, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical input port and a conductive line carrying the alarm signal from the I/O port.

13. The optical signal repeater of claim 11, wherein the upstream branch carries the electric signal from the first optical input port to the repeating controller and carries the electric signal, which is combined with the alarm signal from the repeating controller, to the first optical output port.

14. The optical signal repeater of claim 11, wherein the upstream branch comprises an adjustment circuit for delaying one of the electric signal from the first optical input port and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

15. The optical signal repeater of claim 11, wherein the upstream branch comprises an adjustment circuit for delaying one of the electric signal from the first optical input port and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

16. The optical signal repeater of claim 11, wherein the upstream branch comprises a packet encoder for encoding a combined packet when the electric signal from the first optical input port and the alarm signal from the detectors/transmitters arrive simultaneously.

17. The optical signal repeater of claim 10, wherein the downstream signal path comprises:

a second optical input port for producing the electrically converted signal from the optical signal optically received from a previous optical converter connected in daisy-chain; and

a downstream branch for forking the electrically converted signal from the second optical input port to the repeating controller and a second optical output port,

wherein the second optical output port optically converts the electrically converted signal from the downstream branch to be output externally.

18. The optical signal converter of claim 17, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical input port and a conductive line to the repeating controller.

19. The optical signal converter of claim 17, wherein the downstream branch comprises a detection circuit for detecting a control signal in the electrically converted signal from the second optical input port to be transmitted to one of the fire safety equipments, and for outputting the control signal to the repeating controller.

20. An R/GR type fire alarm control system comprising:

a plurality of detectors/transmitters for issuing alarm signals;

a plurality of fire safety equipments for operating under control signals;

a plurality of repeaters connected to the plurality of detectors/transmitters and the plurality of fire safety equipments;

a plurality of optical converts, connected to each other in daisy-chain, for optically transmitting the alarm signals upwardly and optically transmitting the control signals downwardly, and capable of electrically transacting the alarm signals and the control signals with respect to the plurality of the repeaters; and

an R/GR type fire alarm control panel for receiving the alarm signals from one of the optical converters and for transmitting the control signals to one of the optical converters.

21. The R/GR type fire alarm control system of claim 20, further comprising:

a single port optical converter optically coupled to the one of the optical converters and electrically coupled to the R/GR type fire alarm control panel.

22. An R/GR type fire alarm control system comprising:

a plurality of detectors/transmitters for issuing alarm signals;

a plurality of fire safety equipments for operating under control signals;

a plurality of optical repeaters, connected to each other in daisy-chain and connected to the plurality of the detectors/transmitters and the fire safety equipments, for optically transmitting the alarm signals upwardly and optically transmitting the control signals downwardly, and capable of electrically transacting the alarm signals with respect to the detectors/transmitters and the control signals with respect to the fire safety equipments; and

an R/GR type fire alarm control panel for receiving the alarm signals from one of the optical repeaters and for transmitting the control signals to one of the optical repeaters.

23. The R/GR type fire alarm control system of claim 22, further comprising:

a single port optical converter optically coupled to the one of the optical repeaters and electrically coupled to the R/GR type fire alarm control panel.

24. A 3-way optical repeater, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel with optical cables in daisy-chain, comprising:

an upstream signal path for optically receiving a first upstream signal, which is eventually destined to the R/GR type fire alarm control panel, electrically converting the first upstream signal, electrically combining the converted first upstream signal with an alarm signal originated from at least one of the detectors/transmitters to yield a second upstream signal, and optically outputting the second upstream signal;

a downstream signal path for optically receiving a first downstream signal, which, originating from the R/GR type fire alarm control panel, is eventually destined to the at least one of the fire safety equipments, electrically converting the first downstream signal, extracting a control signal for the at least one of the fire safety equipments, and for optically outputting the first downstream signal after the extraction; and

an optical I/O port for electrically converting an alarm signal, which, originating at the detectors/transmitters, is optically provided, to be provided to the upstream signal path, and for optically outputting the control signal extracted at the downstream signal path.

25. The 3-way optical repeater of claim 24, wherein the upstream signal path comprises:

a first optical input port for producing a first upstream electric signal electrically converted from the first upstream signal, which is optically received from a next 3-way optical repeater connected in daisy-chain;

an upstream branch for combining the first upstream electric signal from the first optical input port and the alarm signal originated from the detectors/transmitters, so as to produce the second upstream electric signal; and

a first optical output port for producing the second upstream signal optically converted from the second upstream electric signal outputted from the upstream branch.

26. The 3-way optical repeater of claim 25, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical input port and a conductive line carrying the alarm signal on.

27. The 3-way optical repeater of claim 25, wherein the upstream branch comprises an adjustment circuit for delaying one of the first upstream electric signal from the first optical input port and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

28. The 3-way optical repeater of claim 25, wherein the upstream branch comprises a packet encoder for encoding a combined packet when the first upstream electric signal from the first optical input port and the alarm signal from the detectors/transmitters arrive simultaneously.

29. The 3-way optical repeater of claim 24, wherein the downstream signal path comprises:

a second optical input port for producing a electrical signal from the signal optically received from a previous 3-way optical converter connected in daisy-chain; and

a downstream branch for forking the electrical signal from the second optical input port to the I/O port and a second optical output port,

wherein the second optical output port optically converts the electrical signal from the downstream branch to be output externally.

30. The 3-way optical repeater of claim 29, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical input port and a conductive line to the I/O port.

31. The 3-way optical repeater of claim 29, wherein the downstream branch comprises a detection circuit for detecting a control signal in the electrical signal from the second optical input port to be transmitted to one of the fire safety equipments, and for outputting the control signal to the optical I/O port.

32. A 3-way optical repeater, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel with optical cables in daisy-chain, comprising:

a first optical input port for optically receiving a first signal from a first 3-way optical repeater connected in daisy-chain;

a first optical output port for optically outputting a second signal to a second 3-way optical repeater connected in daisy-chain;

a second optical input port for optically receiving a third signal from the second 3-way optical repeater;

a second optical output port for optically outputting a fourth signal to the first 3-way optical repeater;

a third optical input port for optically receiving an alarm signal eventually destined to the R/GR type fire alarm control panel;

a third optical output port for optically outputting a control signal eventually destined to one of the fire safety equipments; and

a relaying part for electrically receiving the first signal and the alarm signal, which are optically received from respectively the first optical input port and the third optical input port and electrically converted, so as to electrically produce the second signal to be provided to the first optical output port, for electrically receiving the third signal, which is optically received from the second optical input port and is electrically converted, so as to extract the control signal from the third signal to provided to the third optical output port, and for producing the fourth signal, based on the third signal, to the second optical output port, so as to deliver the fourth signal to the first 3-way optical repeater.

33. An R/GR type fire alarm control system comprising:

a plurality of detectors/transmitters for issuing alarm signals;

a plurality of fire safety equipments for operating under control signals;

a plurality of 3-way optical repeaters, connected to each other in daisy chain through optical cables, for optically transmitting the alarm signals upwardly and for optically transmitting the control signals downwardly;

a plurality of 2-way optical repeaters, connected to the respective 3-way optical repeater and connected to the each other in daisy-chain through optical cables, among the plurality of detectors/transmitters or the plurality of fire safety equipments, for optically transmitting the alarm signals to a correspondingly connected 3-way optical repeater, and for optically transmitting the control signals to a correspondingly connected 3-way optical repeater; and

an R/GR type fire alarm control panel for electrically or optically receiving the alarm signals from one of the 3-way optical repeaters and for electrically or optically transmitting the control signals to one of the 3-way optical repeaters.

34. The R/GR type fire alarm control system of claim 33, further comprising:

a single port optical converter optically coupled to the one of the 3-way optical repeaters and electrically coupled to the R/GR type fire alarm control panel.

35. An optical signal converter, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel in daisy-chain using optical cables, the optical signal converter comprising:

a first optical module for receiving an upstream optical signal from a next optical signal converter connected in daisy-chain to be converted into an upstream electric signal, for receiving a downstream electric signal to be converted into a downstream optical signal, and for outputting the downstream optical signal to the next optical signal converter;

a second optical module for receiving the downstream optical signal from a previous optical signal converter connected in daisy-chain to be converted into the downstream electric signal, for receiving a combined upstream electric signal to be converted into a combined upstream optical signal, and for outputting the combined upstream optical signal to the previous optical signal converter;

a upstream branch for electrically combining the upstream electric signal from the first optical module and the alarm signal originated from the detectors/transmitters, so as to produce the combined upstream electric signal; and

a downstream branch for providing the downstream electric signal from the second optical module to an I/O port and the first optical module,

wherein the I/O port provides the alarm signal received from the detectors/transmitters to the upstream branch and for externally outputting the downstream electric signal.

36. The optical signal converter of claim 35, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical module and a conductive line carrying the alarm signal.

37. The optical signal converter of claim 35, wherein the upstream branch comprises an adjustment circuit for delaying one of the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

38. The optical signal converter of claim 35, wherein the upstream branch comprises a packet encoder for encoding a combined packet to be outputted as the combined upstream electric signal, when the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters arrive simultaneously.

39. The optical signal converter of claim 35, wherein the I/O port comprises:

an input port for receiving a differential alarm signal satisfying RS485 or RS422 specification or a DC 24 V alarm signal, from the detectors/transmitters, and for converting to a single-ended alarm signal to be provided to the upstream branch; and

an output port for converting the downstream electrical signal to a differential signal satisfying RS485 or RS422 specification or a DC 24 V signal to be output externally.

40. The optical signal converter of claim 35, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical module and a conductive line to the I/O port.

41. The optical signal converter of claim 35, wherein the downstream branch comprises a detection circuit for detecting a control signal in the downstream electric signal from the second optical module to be transmitted to one of the fire safety equipments, and for outputting the control signal to the I/O port.

42. An optical repeater, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel in daisy-chain using optical cables, comprising:

a first optical module for receiving an upstream optical signal from a next optical repeater connected in daisy-chain to be converted into an upstream electric signal, for receiving a downstream electric signal to be converted into a downstream optical signal, and for outputting the downstream optical signal to the next optical repeater;

a second optical module for receiving the downstream optical signal from a previous optical repeater connected in daisy-chain to be converted into the downstream electric signal, for receiving a combined upstream electric signal to be converted into a combined upstream optical signal, and for outputting the combined upstream optical signal to the previous optical repeater;

a upstream branch for electrically combining the upstream electric signal from the first optical module and the alarm signal originated from the detectors/transmitters, so as to produce the combined upstream electric signal;

a downstream branch for providing the downstream electric signal from the second optical module to a repeating controller and the first optical module; and

a repeating controller for providing the received alarm signal to the upstream branch, and for extracting a control signal from the downstream electric signal; and

an I/O port for providing the alarm signal received from the detectors/transmitters to the repeating controller, and for externally outputting the control signal provided from the repeating controller.

43. The optical repeater of claim 42, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical module and a conductive line carrying the alarm signal from the repeating controller.

44. The optical repeater of claim 42, wherein the upstream branch delivers the upstream electric signal outputted from the first optical module to the repeating controller and delivers the combined upstream electric signal received from the repeating controller to the second optical module, and

the repeating controller is configured to combine the alarm signal and the upstream electric signal to produce the combined upstream electric signal.

45. The optical repeater of claim 42, wherein the upstream branch comprises an adjustment circuit for delaying one of the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

46. The optical repeater of claim 42, wherein the upstream branch comprises a packet encoder for encoding a combined packet, when the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters arrive simultaneously.

47. The optical repeater of claim 42, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical module and a conductive line to the repeating controller.

48. The optical repeater of claim 42, wherein the I/O port comprises:

an input port for receiving a differential alarm signal satisfying RS485 or RS422 specification or a DC 24 V alarm signal, from the detectors/transmitters, and for converting to a single-ended alarm signal to be provided to the repeating controller; and

an output port for converting the control signal from the repeating controller into a differential signal satisfying RS485 or RS422 specification or a DC 24 V signal to be output externally.

49. An optical repeater, connecting between multiple detectors/transmitters or fire safety equipments and an R/GR type fire alarm control panel in daisy-chain using optical cables, comprising:

a first optical module for receiving an upstream optical signal from a next optical repeater connected in daisy-chain to be converted into an upstream electric signal, for receiving a downstream electric signal to be converted into a downstream optical signal, and for outputting the downstream optical signal to the next optical repeater;

a second optical module for receiving the downstream optical signal from a previous optical repeater connected in daisy-chain to be converted into the downstream electric signal, for receiving a combined upstream electric signal to be converted into a combined upstream optical signal, and for outputting the combined upstream optical signal to the previous optical repeater;

a upstream branch for electrically combining the upstream electric signal from the first optical module and the alarm signal originated from the detectors/transmitters, so as to produce the combined upstream electric signal;

a downstream branch for providing the downstream electric signal from the second optical module to a repeating controller and the first optical module;

a repeating controller for providing the received alarm signal to the upstream branch, and for extracting a control signal from the downstream electric signal; and

a third optical module for optically receiving the alarm signal originated from the detectors/transmitters, for electrically converting the alarm signal to be provided to the repeating controller, and for externally outputting the control signal provided from the repeating controller.

50. The optical repeater of claim 49, wherein the upstream branch comprises a wire tap coupling an output conductive line of the first optical module and a conductive line carrying the alarm signal from the repeating controller.

51. The optical repeater of claim 49, wherein the upstream branch delivers the upstream electric signal outputted from the first optical module to the repeating controller and delivers the combined upstream electric signal received from the repeating controller to the second optical module, and

the repeating controller is configured to combine the alarm signal and the upstream electric signal to produce the combined upstream electric signal.

52. The optical repeater of claim 49, wherein the upstream branch comprises an adjustment circuit for delaying one of the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters when those two signals arrive simultaneously, so as to sequentially output those two signals.

53. The optical repeater of claim 49, wherein the upstream branch comprises;

a packet encoder for encoding a combined packet, when the upstream electric signal from the first optical module and the alarm signal from the detectors/transmitters arrive simultaneously.

54. The optical repeater of claim 49, wherein the downstream branch comprises a wire tap coupling an output conductive line of the second optical module and a conductive line to the repeating controller.