KR100979173B1 - Type-r and type-gr fire alarm receiver system with optical repeaters - Google Patents

Abstract

PURPOSE: A type-R and type-GR fire alarm receiver system with optical repeaters is provided to establish a fire monitoring system for a high-rise building, a large apartment complex, or one building through the connection of a maximum of 65535 repeaters. CONSTITUTION: An uplink signal path(12a) electrically combines an optical signal of an optical converter with an alarm signal of a detector or oscillator(14). A downlink signal path(12b) converts the optical signal of a previous optical converter into an electric signal, and an I/O port(115) provides the path signal to the uplink signal path. The I/O port outputs the electric signal of the downlink signal path to the outside. The optical signal of the uplink signal path is transferred to an R-type/GR-type receiver(11).

Description

TYPE-R AND TYPE-GR FIRE ALARM RECEIVER SYSTEM WITH OPTICAL REPEATERS}

The present invention relates to a fire reception system, and more particularly, to an R-type and GR-type receiver system.

The National Fire Safety Standards (NFSC) is a set of regulations that set fire safety standards. Among them, the fire safety standards of the NFSC 203 automated fire detection system specify the conditions that must be provided by the building's automated fire detection system.

According to NFSC 203, a detector is a device that can automatically detect a fire and send an alarm to a receiver, and a sender is a device for notifying a person when a fire is directly detected. Among the various transmitters, the P-type Class 1 transmitter has a response lamp to confirm that a person has sent it, and has a telephone function to allow communication between the receiver and the transmitter. The P-type Class 2 transmitter has a push button but no telephone function. . There are five types of receivers: P-type, R-type, M-type, GP-type, and GR-type. Among them, R-type and GR-type receivers are unique signals from multiple (more than 100 repeaters) detectors or P-type transmitters. A receiver configured to receive a notification and notify an interested party of an alert. Type R and GR receivers must be able to easily determine where the detector or transmitter is, and thus give each detector or transmitter a unique identification. It is unreasonable to connect detectors and transmitters installed in a large building directly to the receiver, and the repeater is required to receive alarm signals (including unique signals) from the detectors and transmitters and transmit them to the receiver.

A repeater is a device that transmits a signal generated by the operation of a detector or a transmitter to a receiver, and also transmits a control signal to a fire extinguishing facility, a smoke removal facility, or a disaster prevention facility. Thus, the repeater needs to have separate input and output channels between the receiver and the receiver.

In conventional R-type and GR-type receiver systems, a number of repeaters and R- / GR-type receivers are connected by RS485 or RS422. The RS485 / 422 standard is a differential method, which has a communication distance of about 1km and can connect about 127 or 255 repeaters when connected in a multi-drop method. It could cover a building. However, such a conventional R-type / GR-type receiver has many shortcomings in constructing a fire monitoring system incorporating a large apartment or campus buildings or building a fire monitoring system in a very large building.

In a realistic sense, fire monitoring systems built with RS485 / 422 wires frequently had false alarms and malfunctions, which often resulted in building managers turning off and leaving the monitoring system unattended. The practice of building a poorly performing fire surveillance system is seen as a formal procedure for obtaining building approval.

An object of the present invention is to provide a new R-type / GR-type receiver system that can overcome the limitation of the communication distance of the conventional R-type / GR-type receiver system and the number of repeaters that can be connected.

Furthermore, the present invention provides a reliable R-type / GR-type receiver system that overcomes the disadvantages of the conventional R-type / GR-type receiver system which is frequently malfunctioned.

An optical converter according to the present invention for solving the above problems, as an optical converter for daisy-chaining a plurality of sensors / transmitters or disaster prevention facilities and an R-type / GR-type receiver using an optical cable,

Daisy-chain and then electrically combine the electrical signal electrically converted from the optically transmitted signal from the photoconverter with the alarm signal from the detector or transmitter, and output the optically converted optical signal from the electrically coupled signal Upward signal path;

A downlink signal path electrically converting an optically transmitted signal from a previous daisy chained optical converter and outputting an optical signal obtained by optically converting the converted electrical signal; And

And an input / output port for providing the alarm signal received from a plurality of detectors / transmitters to the uplink signal path and outputting the electrical signal converted in the downlink signal path to the outside,

The optical signal transmitted by the uplink signal path is ultimately transmitted to the R-type / GR-type receiver, and the optical signal transmitted by the downlink signal path may be derived from the R-type / GR-type receiver.

Advantageously, said uplink signal path is

A first light receiving port for daisy-chaining and then outputting an electrical signal that is electrically converted from a signal transmitted optically from an optical converter;

An upstream branch configured to output an electrical signal electrically coupled to an electrical signal output from the first optical reception port and an alarm signal derived from a detector or a transmitter; And

It may include a first optical transmission port for outputting the electrical signal output from the up-branch to an optically converted optical signal.

Preferably, the upward branch may be a tap connecting the output wire of the first optical receiving port and the wire through which the alarm signal is transmitted.

Preferably, the upstream branch includes an adjustment circuit for sequentially outputting two signals by delaying one signal when simultaneously receiving an electrical signal output from the first optical receiving port and an alarm signal originating from a detector or a transmitter. can do.

Preferably, the upstream branch may include a packet encoder that encodes and outputs a single packet when simultaneously receiving an electrical signal output from the first optical reception port and an alarm signal originating from a detector or a transmitter.

Preferably, the input and output port,

An input port for receiving a differential signal of RS485 or RS422 standard or a DC 24V DC signal from the detector or transmitter, converting the signal into a single-ended alarm signal and providing the signal to the uplink signal path; And

It may include an output port for converting the electrical signal converted in the downlink signal path to a differential signal of RS485 or RS422 standard or a DC signal of DC 24V to output to the outside.

Advantageously, said downlink signal path is

A second light receiving port for outputting an electrical signal electrically converted from a signal optically transmitted from a previous light converter connected by a daisy chain;

A down branch providing an electrical signal output from the second optical reception port to the input / output port and the second optical transmission port; And

And a second optical transmission port for optically converting and outputting an electrical signal output from the downward branch.

Preferably, the downward branch may be a tap connecting an output wire of the second optical receiving port and a wire connected to the input / output port.

Preferably, the downward branch may include a detection circuit for detecting a control signal to be transmitted to one of the disaster prevention facilities from the electrical signal output from the second optical reception port and outputs it to the input / output port.

An optical repeater according to another aspect of the present invention is an optical repeater that daisy-chains a plurality of detectors / transmitters or disaster prevention facilities and an R-type / GR-type receiver using an optical cable.

Daisy-chained and then electrically coupled an electrical signal converted from the optically transmitted signal from the light converter and an alarm signal from the detector or transmitter, and outputs the optical signal converted optically from the electrically coupled signal Uplink signal path;

A downlink signal path electrically converting an optically transmitted signal from a previous daisy chained optical converter and outputting an optical signal obtained by optically converting the converted electrical signal;

A relay control unit providing an alarm signal received at an input / output port to the uplink signal path, extracting a control signal from the electrical signal converted in the downlink signal path, and transmitting the control signal to the input / output port; And

And an input / output port electrically connected to the detector or the transmitter for receiving an alarm signal from the detector or the transmitter, and outputting the control signal to a corresponding disaster prevention facility.

The optical signal transmitted by the uplink signal path is ultimately transmitted to the R-type / GR-type receiver, and the optical signal transmitted by the downlink signal path may be derived from the R-type / GR-type receiver.

Advantageously, said uplink signal path is

A first optical reception port configured to daisy-chain and then output an electrical signal that is electrically converted from an optically transmitted signal from the optical converter;

An upstream branch configured to output an electrical signal electrically coupled to an electrical signal output from the first optical reception port and an alarm signal derived from a detector or a transmitter; And

It may include a first optical transmission port for outputting the electrical signal output from the up-branch to an optically converted optical signal.

Preferably, the upward branch may be a tap connecting the output wire of the first optical receiving port and the wire through which the alarm signal is transmitted.

Preferably, the upstream branch transmits an electrical signal output from the first optical reception port to the relay control unit, receives an electrical signal combined with the alarm signal from the relay control unit, and transmits the electrical signal to the first optical transmission port. Can be wired to

Preferably, the upstream branch includes an adjustment circuit for sequentially outputting two signals by delaying one signal when simultaneously receiving an electrical signal output from the first optical receiving port and an alarm signal originating from a detector or a transmitter. can do.

The upstream branch may include an adjusting circuit for sequentially outputting two signals by delaying any one signal when simultaneously receiving an electrical signal output from the first optical receiving port and an alarm signal originating from a detector or a transmitter.

Preferably, the upstream branch may include a packet encoder that encodes and outputs a single packet when simultaneously receiving an electrical signal output from the first optical reception port and an alarm signal originating from a detector or a transmitter.

Advantageously, said downlink signal path is

A second light receiving port for outputting an electrical signal electrically converted from a signal optically transmitted from a previous light converter connected by a daisy chain;

A down branch for providing an electrical signal output from the second optical reception port to the relay control unit and a second optical transmission port; And

And a second optical transmission port for optically converting and outputting an electrical signal output from the downward branch.

Preferably, the downward branch may be a tap connecting the output wire of the second optical receiving port and the wire connected to the relay controller.

Preferably, the downward branch may include a detection circuit that detects a control signal to be transmitted to one of the disaster prevention facilities from the electrical signal output from the second optical reception port and outputs the control signal to the relay controller.

R type / GR type receiver system according to an aspect of the present invention

A number of sensors / transmitters that issue an alarm signal;

A plurality of disaster prevention facilities operating in accordance with the control signal;

A plurality of repeaters connected to the detector / senders and disaster prevention facilities;

A plurality of daisy chains connected to each other via an optical cable to optically transmit the alarm signal, optically transmit the control signal, and electrically input and output the alarm signal and the control signal to the repeaters. Photoconverters; And

And an R-type / GR-type receiver that receives the alert signal from one of the photoconverters and transmits the control signal to the one of the photoconverters.

Preferably, the R / GR receiver system

The apparatus may further include a single port optical converter optically connected to the one of the optical converters and electrically connected to the R-type / GR-type receiver.

An R-type / GR-type receiver system according to another aspect of the present invention

A number of sensors / transmitters that issue an alarm signal;

A plurality of disaster prevention facilities operating in accordance with the control signal;

Connected to the detector / transmitters and disaster prevention facilities, daisy chained together via an optical cable to optically transmit the alert signal, and also optically transmit the control signal, to the detector / transmitters A plurality of optical repeaters capable of electrically inputting and outputting the alarm signal and the control signal to the disaster prevention facilities respectively; And

And an R-type / GR-type receiver for receiving the alarm signal from one of the optical repeaters and transmitting the control signal to the one of the optical repeaters.

Preferably, the R / GR receiver system

The apparatus may further include a single port optical converter optically connected to the one of the optical repeaters and electrically connected to the R-type / GR-type receiver.

According to the present invention, it is possible to communicate at a much longer distance than the conventional R- / GR-type receiver system, and can connect up to 65535 repeaters, so that not only one building with one R-type receiver, A fire surveillance system can be built for the entire complex or the entire skyscraper.

According to one embodiment of the present invention, while using a conventional repeater, detector, and transmitter as it is, it is possible to greatly expand the capacity of the R-type / GR-type receiver system.

Furthermore, embodiments of the present invention can greatly reduce the error rate and build a reliable R-type / GR-type receiver system.

With respect to the embodiments of the present invention disclosed in the text, specific structural to functional descriptions are merely illustrated for the purpose of describing embodiments of the present invention, embodiments of the present invention may be implemented in various forms and It should not be construed as limited to the embodiments described in.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted. With regard to the reference numeral, the leftmost digit of the reference numeral may refer to the number of the figure in which the object indicated by the reference numeral first appears.

1 is a block diagram schematically illustrating an optical relay type R / GR receiver system according to an exemplary embodiment of the present invention.

Referring to Fig. 1, the optical relay type R / GR receiver system 10 includes an R type / GR type receiver 11, optical cables 12a and 12b, optical repeaters 13a, 13b, ..., 13n. , Detector or transmitter 14, and disaster prevention facility 15. Optical repeaters 13a, 13b, ..., 13n are connected in a daisy chain format.

Specifically, the R-type / GR-type receiver 11 includes a control unit 111, an operation check unit 112, a display unit 113, a network interface 114, and an optical input / output port 115. The control unit 111 controls operations such as reception and control of an alarm signal, identification of a repeater and a transmitter that generated the alarm signal, and communication between a control center (not shown). The operation check unit 112 may test whether the repeaters and the lines connected to the receiver operate normally. The display unit 113 may include a display, an LED lamp, a speaker, and the like, and may visually or audibly display an alarm state and an operation state. The network interface 114 performs communication with the control center. In some embodiments, storage may be added to accumulate and store operation information.

The optical input / output port 115 of the R-type / GR-type receiver 11 receives an alarm signal generated from the detector or the transmitter 14 in the form of an optical signal through the optical cable 12a and converts it into an electrical signal to control the unit 111. The control signal provided to be transmitted from the control center to each disaster prevention facility is received from the control unit 111 and converted into an optical signal and then transmitted through the optical cable 12b.

The path that propagates the control signal originating from the R-type / GR-type receiver 11 through each optical repeater 13 to the disaster prevention facility 15 is a downstream signal path and originated from the detector or the transmitter 14. The path for propagating the alarm signal through the optical repeater 13 to the R-type / GR-type receiver 11 may be referred to as an upstream signal path.

Depending on the embodiment, the R- / GR-type receiver 11 may have an RS485 or RS422 input / output port as in the conventional case, in which case the optical input / output port 115 is a separate device, for example a single port photoconverter. It is configured as, can be mounted so as to be connected to the RS485 / 422 input and output port from the outside of the R / GR type receiver 11, converts the optical signal to RS485 / 422 signal and transfers to the R / GR type receiver 11 Alternatively, the RS485 / 422 differential signal output from the R- / GR-type receiver 11 may be converted into an optical signal and transmitted.

The optical cable 12a is a medium for transmitting an alarm signal directed to the R-type / GR-type receiver 11, and the optical cable 12b is a medium for transmitting a control signal output from the R-type / GR-type receiver 11.

Although the optical cables 12a and 12b are illustrated as physically separate cables in FIG. 1, according to an embodiment, the optical cables 12a and 12b may be implemented with different optical fibers that are physically located in one optical cable.

Optical repeaters 13a, 13b, ..., 13n are optically connected to each other via optical cables 12a, 12b, and are also electrically connected to one or more detectors or transmitters 14, respectively. The detectors or transmitters 14 can be grouped, for example, into one business compartment, one floor, etc. in a building, and connected to one optical repeater 13 by a simple direct current signal line or RS485 / 422 wire. Optical repeaters 13a, 13b, ..., 13n are for example fire fighting equipment such as fire hydrants, sprinklers, halogen fire extinguishers and fire protection equipment such as dampers, fire doors, fire shutters, flue windows, and other disaster prevention equipment such as evacuation induction lamps ( 15) can be electrically connected.

The optical repeaters 13a, 13b, ..., 13n are connected in a daisy chain manner, so that the alarm signal generated from the next sequence of the optical repeater 13 or the alarm signal generated by the detectors or the transmitters 14 can be obtained. Optionally or in combination with the received alarm signals are delivered to the forward repeater (13). Also, the optical repeaters 13a, 13b,..., 13n have a control signal transmitted from the R- / GR-type receiver 11 or a control signal transmitted through the preceding optical repeater 13. To deliver to the fire, smoke and other disaster prevention equipment (15), or to the next repeater (13).

The optical repeaters 13a, 13b, ..., 13n of the present invention may be optically connected to other optical repeaters 13 and may be electrically connected to a detector or transmitter 14 or disaster prevention equipment. In other words, the optical repeater 13 converts the received optical signal into an electrical signal and processes it, and converts the processed electrical signal into an optical signal and outputs the converted optical signal.

The detector or transmitter 14 may be a conventional fire, smoke, heat or gas detector or a button type transmitter in which a person directly presses a button to generate an alarm. The detector or transmitter 14 may generate an electrical alert signal and transmit it to the optical repeater 13. Commercially readily available detectors or transmitters 14 may generate an alarm signal in the form of a differential signal typically defined in RS485 / 422. In this case, the optical repeaters 13 may also have an RS485 / 422 input / output port to receive an alarm signal. Another form of commercially readily available detector or transmitter 14 may generate an alarm signal in the form of a single-ended DC signal of DC 24V. In this case, the optical repeaters 13 may also have a DC input / output port to receive the alarm signal.

According to the embodiment, the detector or transmitter 14 also outputs an alarm signal as an optical signal, and may be connected to the optical repeater 13 through an optical cable.

2A, 2B, and 2C are block diagrams illustrating a two-way optical repeater that may be used in the optical relay type R / GR receiver system of FIG.

2A, 2B, and 2C, the optical repeater 13 may include a first light receiving port 131, an upward branch 132, a first light transmitting port 133, and a second light receiving port 136. , A down branch 135, a second optical transmission port 134, a relay control unit 137, and an input / output port 138. 2A, 2B, and 2C, the up branch 132 and the down branch 135 are different in structure, and the remaining components of the optical repeater 13 may be regarded as being substantially the same.

The first optical receiving port 131, the uplink branch 132, and the first optical transmitting port 133 constitute an uplink signal path, and are connected to the alarm signal transmitted from another optical repeater and the corresponding optical repeater 13. The alarm signal input from the detector or the transmitter 14 is transmitted to the R-type / GR-type receiver 11. The second light receiving port 136, the down branch 135, and the second light transmitting port 134 form a downlink signal path, and control signals originating from the R-type / GR-type receiver 11 are transferred to another optical repeater ( 13) and the relay control unit 137.

The relay control unit 137 determines whether the alarm signal transmitted from the detector or the transmitter 14 is an appropriate signal and transmits it to the upstream branch 132. In addition, the relay control unit 137 determines whether the control signal transmitted from the downward branch 135 is related to the disaster prevention equipment connected to the optical repeater 13 and if the control signal is connected to the disaster prevention equipment connected to the optical repeater 13. If it is, send it to the disaster prevention facility.

The relay controller 137 and the detector or the transmitter 14 may be connected to the RS485 / 422 standard or a DC 24V signal line through the input / output port 138. According to an embodiment, the input / output port 138 may be an optical input / output port, in which case it may be connected to the detector or the transmitter 14 by an optical cable.

Specifically, the first optical receiving port 131 receives the alarm signal transmitted through the optical cable from another optical repeater, and converts the received optical alarm signal into an electrical alarm signal. The up branch 132 combines the alarm signal generated by the detector or the transmitter 14 and transmitted through the relay control unit 137 with the converted alarm signal at the first light receiving port 131, and then removes the combined electrical signal. 1 is transmitted to the optical transmission port (133). The first optical transmission port 133 converts the received electrical signal into an optical signal and outputs the optical signal.

The up branch 132 may be implemented in various configurations. Referring to FIG. 2A, in one embodiment, the upward branch 132 may simply be a tap connecting two conductors. In this case, the structure of the upstream branch 132 is simple, but if an alarm signal generated by the detector or the transmitter 14 and an alarm signal from another repeater 13 are simultaneously applied, a collision may occur.

Referring to FIG. 2B, in another embodiment, the upstream branch 132 electrically connects the first light receiving port 131 and the relay control unit 137, and also the relay control unit 137 and the first light transmission port ( 133 may be electrically connected to each other. In this case, the alarm signal transmitted from the other optical repeater 13 is transmitted to the relay control unit 137 through the wiring of the upstream branch 132, and the relay processing unit 137 processes the alarm signals and then processes the processed alarms. The signal is transmitted to the first optical transmission port 133 through the wiring of the upstream branch 132.

Referring to FIG. 2C, the up branch 132 is implemented as an adjustment circuit, for example, when two alarm signals are simultaneously applied, one signal is preferentially output and the other signal is output after a predetermined delay time to prevent a collision or Alternatively, the packet encoder may be implemented as a packet encoder, for example, after encoding two alarm signals in one payload, and then outputting the packet. The downward branch 135 may be implemented as a detection circuit for extracting a control signal to be sent to the fire fighting equipment connected to the optical repeater 13.

Meanwhile, the second optical reception port 136 receives the control signal transmitted through the optical cable due to the R-type / GR-type receiver 11, and converts the received optical control signal into an electrical control signal. The downward branch 135 transmits control signals originating from the R / GR receiver 11 to the relay control unit 137 and the second optical transmission port 134, respectively. The second optical transmission port 134 converts the received control signal into an optical signal and outputs it to the optical cable.

The downward branch 135 may be implemented in various configurations. Referring to FIG. 2A, in one embodiment, the downward branch 135 may simply be a tab. In this case, the control signal is directly transmitted to both the second optical transmission port 134 and the relay control unit 137.

Referring to FIG. 2B, in another embodiment, the downward branch 135 electrically connects the second light receiving port 136 and the relay control unit 137, and also the relay control unit 137 and the second light transmission port ( 134 may be electrically connected. In this case, the control signal transmitted from the other optical repeater 13 is transmitted to the relay control unit 137 through the connection of the downward branch 135. When the relay processing unit 137 properly processes and outputs the received control signals, the processed control signals are transferred to the second optical transmission port 134 through the connection of the downward branch 135. In this case, the relay processing unit 137 may output the received control signals as it is, or may remove the portion related to the optical repeater 13 and generate and output the control signals again so as to reduce the communication amount.

Referring to FIG. 2C, the downward branch 135 is implemented as a detection circuit, for example, the control signal is transmitted to the relay controller 137 only when there is a control signal corresponding to the corresponding optical repeater 13 among the applied control signals. Otherwise, the control signal may be transferred to the second optical transmission port 136.

3 is a block diagram illustrating an optical input / output port that may be used in the optical relay type R / GR receiver system of FIG. 1.

Referring to FIG. 3, the optical input / output port 115 includes an optical transmission port 1151 and an optical reception port 1152. The optical transmission port 1151 converts the electrical control signal of the R-type / GR-type receiver 11 into an optical signal and outputs it. The light receiving port 1152 receives an alarm signal in the form of an optical signal, converts it into an electrical signal, and provides the same to an R type / GR type receiver 11.

4 is a block diagram schematically illustrating an optical relay type R / GR receiver system according to another exemplary embodiment of the present invention.

Referring to FIG. 4, the optical relay R-type receiver system 40 includes an R- / GR-type receiver 11, a single port optical converter 41, optical cables 12a and 12b, and a two-way port optical converter 43a. , 43b, ..., 43n), repeaters 44a, 44b, ..., 44n, detectors or transmitters 14. The photoconverters 43a, 43b, ..., 43n are connected in a daisy chain form.

The R type / GR type receiver 11 includes a control unit 111, an operation check unit 112, a display unit 113, a network interface 114, and an input / output port 116, and the R type / GR type of FIG. Since it is substantially similar to the receiver 11, description thereof will be omitted. However, the input / output port 116 is an element corresponding to the optical input / output port 115 that inputs / outputs an optical signal in FIG. 1, and inputs and outputs an electrical signal in RS485 / 422 standard in FIG. 4.

The single port optical converter 41 is connected between the input / output port 116 of the R type / GR type receiver 11 and the optical cables 12a and 12b to receive an alarm signal in the form of an optical signal received through the optical cable 12a. It converts into an electrical signal and provides it to the input / output port 116 of the R-type / GR-type receiver 11, and converts the control signal output from the input / output port 116 of the R-type / GR-type receiver 11 into an optical signal. It outputs through the optical cable 12b.

The two-way port optical converter 43 may perform signal transmission between the two repeaters 44 or signal transmission between the repeater 44 and the receiver 11 through the optical cables 12a and 12b. 44) is connected by RS485 / 422 communication to transmit alarm signal.

The repeater 44 may be a conventional repeater using the RS485 / 422 communication standard, and the detector or transmitter 14 may also be a conventional detector or transmitter.

5A and 5B are block diagrams illustrating a two-way port optical repeater that may be used in the optical relay type R / GR receiver system of FIG.

5A and 5B, the two-way optical converter 43 includes a first light receiving port 431, an upward branch 432, a first light transmitting port 433, and a second light receiving port 436. , A down branch 435, a second optical transmission port 434, and an input / output port 438 may be included. 5A and 5B, the structures of the up branch 432 and the down branch 435 are different, and the remaining components of the two-way light converter 43 may be substantially the same.

The first light receiving port 431, the up branch 432, and the first light transmitting port 433 constitute an uplink signal path, and an alarm signal transmitted from another two-way light converter 43 and the corresponding two-way. An alarm signal input from the detector or the transmitter 14 is transmitted to another two-way optical converter 43 through a repeater connected to the optical converter 43. The second light receiving port 436, the downward branch 435, and the second light transmitting port 434 constitute a downlink signal path, and control signals derived from the R-type receiver 11 are transferred to another two-way converter 43. ) And the input / output port 438.

The input / output port 438 converts an RS485 / 422 standard alarm signal or a DC 24V DC signal input from the detector or the transmitter 14 through the repeater 44 into a single-ended signal suitable for converting an optical signal into an upward branch. Forward to 432. In addition, the input / output port 438 converts the single-ended control signal transmitted from the downward branch 435 into a control signal of RS485 / 422 standard or a DC signal of DC 24V and outputs the converted signal.

Specifically, the first optical reception port 431 receives the alarm signal transmitted through the optical cable from another optical repeater, and converts the received optical alarm signal into an electrical alarm signal. The up branch 432 combines the alarm signal generated at the detector or transmitter 14 and transmitted through the input / output port 438 with the converted alarm signal at the first light receiving port 431, and then removes the combined electrical signal. 1 is transmitted to the optical transmission port 433. The first optical transmission port 433 converts the received electrical signal into an optical signal and outputs the optical signal.

The up branch 432 may be implemented in various configurations. Referring to FIG. 5A, in one embodiment, the upstream branch 432 may simply be a tap. In this case, the structure of the up-branch branch 432 is simple, but if the alarm signal generated by the detector or the transmitter 14 and transmitted from the repeater 44 and the alarm signals coming from the other light converter 43 are simultaneously applied, a collision may occur. May occur.

Referring to FIG. 5B, the up branch 432 may be implemented as an adjustment circuit so that, for example, when two alarm signals are applied at the same time, one signal is preferentially outputted and another signal is output after a predetermined delay time to prevent collision. Alternatively, the packet encoder may be implemented as a packet encoder, for example, after encoding two alarm signals in one payload, and then outputting the packet.

On the other hand, the second light receiving port 436 receives the control signal transmitted through the two-way optical converter 43 and the optical cable 12b due to the R- / GR-type receiver 11, and receives the received light. Convert the control signal into an electrical control signal. The downward branch 435 transmits the control signal originating from the R-type / GR-type receiver 11 to the input / output port 438 and the second optical transmission port 434, respectively. The second optical transmission port 434 converts the received control signal into an optical signal and then outputs it to the optical cable.

The downward branch 435 may be implemented in various configurations. 5A, in one embodiment, the downward branch 435 may simply be a tab. In this case, the control signal is transmitted directly to both the second optical transmission port 434 and the input / output port 438.

Referring to FIG. 5B, in another embodiment, the down branch 435 is implemented as a detection circuit so that, for example, only when there is a control signal corresponding to the corresponding 2-way light converter 43 among the applied control signals. The signal may be transmitted to the input / output port 438 or the control signal may be transmitted to the second optical transmission port 434.

6 is a block diagram illustrating a single port photoconverter that may be used in the optical relay type R / GR receiver system of FIG.

Referring to FIG. 6, the single port optical converter 41 includes an optical transmission port 411, an optical reception port 412, and an input / output port 413. The input / output port 413 converts the RS485 / 422 standard differential control signal provided from the R / GR type receiver 11 into a single-ended control signal. The optical transmission port 411 converts the single-ended control signal into an optical signal and outputs the optical signal. The light receiving port 412 converts an alarm signal in the form of an optical signal into a single-ended alarm signal and provides it to the input / output port 413. The input / output port 413 converts the single-ended alarm signal into a differential alarm signal of RS485 / 422 standard and provides it to the R-type / GR-type receiver 11.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited to the above-described embodiments, which can be modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications will fall within the scope of the present invention.

1 is a block diagram schematically illustrating an optical relay type R / GR receiver system according to an exemplary embodiment of the present invention.

2A, 2B and 2C are exemplary block diagrams illustrating a two-way optical repeater that may be used in the optical relay type R / GR receiver system of FIG.

3 is a block diagram illustrating an optical input / output port that may be used in the optical relay type R / GR receiver system of FIG. 1.

4 is a block diagram schematically illustrating an optical relay type R / GR receiver system according to another exemplary embodiment of the present invention.

5A and 5B are exemplary block diagrams illustrating a two-way photoconverter that may be used in the optical relay R / GR receiver system of FIG. 4.

6 is a block diagram illustrating a single port photoconverter that may be used in the optical relay type R / GR receiver system of FIG.

Claims (23)

An optical converter for daisy-chaining a plurality of detectors / transmitters or disaster prevention facilities and an R / GR receiver using an optical cable, Daisy-chain and then electrically combine the electrical signal electrically converted from the optically transmitted signal from the photoconverter with the alarm signal from the detector or transmitter, and output the optically converted optical signal from the electrically coupled signal Upward signal path; A downlink signal path electrically converting an optically transmitted signal from a previous daisy chained optical converter and outputting an optical signal obtained by optically converting the converted electrical signal; And And an input / output port for providing the alarm signal received from a plurality of detectors / transmitters to the uplink signal path and outputting the electrical signal converted in the downlink signal path to the outside, The optical signal transmitted by the uplink signal path is ultimately transmitted to the R-type / GR-type receiver, and the optical signal transmitted by the downlink signal path is due to the R-type / GR-type receiver. The method of claim 1, wherein the uplink signal path is A first optical reception port configured to daisy-chain and then output an electrical signal that is electrically converted from an optically transmitted signal from the optical converter; An upstream branch configured to output an electrical signal electrically coupled to an electrical signal output from the first optical reception port and an alarm signal derived from a detector or a transmitter; And And a first optical transmission port configured to output the electrical signal output from the upstream branch as an optically converted optical signal. The optical converter according to claim 2, wherein the up branch is a tap connecting an output wire of the first optical receiving port and a wire through which the alarm signal is transmitted. The method according to claim 2, wherein the up branch is an adjustment circuit for sequentially outputting the two signals by delaying any one signal when the electrical signal output from the first optical receiving port and the alarm signal originating from the detector or the transmitter at the same time Light converter, characterized in that. The optical branch of claim 2, wherein the upstream branch is a packet encoder that encodes and outputs a single packet when simultaneously receiving an electrical signal output from the first optical reception port and an alarm signal from a detector or a transmitter. converter. The method according to claim 1, wherein the input and output port, An input port for receiving a differential signal of RS485 or RS422 standard or a DC 24V DC signal from the detector or transmitter, converting the signal into a single-ended alarm signal and providing the signal to the uplink signal path; And And an output port converting the electrical signal converted in the downlink signal path into a differential signal of RS485 or RS422 standard or a DC signal of DC 24V and outputting the signal to the outside. The method of claim 1, wherein the downlink signal path is A second light receiving port for outputting an electrical signal electrically converted from a signal optically transmitted from a previous light converter connected by a daisy chain; A down branch providing an electrical signal output from the second optical reception port to the input / output port and the second optical transmission port; And And the second optical transmission port for optically converting and outputting an electrical signal output from the downward branch. The optical converter according to claim 7, wherein the downward branch is a tap connecting an output wire of the second optical receiving port and a wire connected to the input / output port. The optical sensor according to claim 7, wherein the downward branch includes a detection circuit that detects a control signal to be transmitted to one of the disaster prevention facilities from an electrical signal output from the second optical reception port and outputs the control signal to the input / output port. converter. An optical repeater for daisy-chaining a plurality of detectors / transmitters or disaster prevention facilities and an R / GR type receiver using an optical cable, Daisy-chained and then electrically coupled an electrical signal converted from the optically transmitted signal from the light converter and an alarm signal from the detector or transmitter, and outputs the optical signal converted optically from the electrically coupled signal Uplink signal path; A downlink signal path electrically converting an optically transmitted signal from a previous daisy chained optical converter and outputting an optical signal obtained by optically converting the converted electrical signal; A relay control unit providing an alarm signal received at an input / output port to the uplink signal path, extracting a control signal from the electrical signal converted in the downlink signal path, and transmitting the control signal to the input / output port; And And an input / output port electrically connected to the detector or the transmitter for receiving an alarm signal from the detector or the transmitter, and outputting the control signal to a corresponding disaster prevention facility. And the optical signal transmitted by the uplink signal path is ultimately transmitted to the R-type / GR-type receiver, and the optical signal transmitted by the downlink signal path is due to the R-type / GR-type receiver. The method of claim 10, wherein the uplink signal path is A first light receiving port for daisy-chaining and then outputting an electrical signal that is electrically converted from a signal transmitted optically from an optical converter; An upstream branch configured to output an electrical signal electrically coupled to an electrical signal output from the first optical reception port and an alarm signal derived from a detector or a transmitter; And And a first optical transmission port configured to output the electrical signal output from the upstream branch as an optically converted optical signal. The optical repeater of claim 11, wherein the up branch is a tap connecting an output wire of the first optical receiving port and a wire through which the alarm signal is transmitted. The apparatus of claim 11, wherein the upstream branch transmits an electrical signal output from the first optical reception port to the relay control unit, and receives an electrical signal combined with the alarm signal from the relay control unit to the first optical transmission port. Optical repeater, characterized in that connected to the transmission. The method of claim 11, wherein the up branch is an adjustment circuit for sequentially outputting the two signals by delaying any one signal when the electrical signal output from the first optical receiving port and the alarm signal originating from the detector or the transmitter at the same time. Optical repeater, characterized in that. The method of claim 11, wherein the up branch is an adjustment circuit for sequentially outputting the two signals by delaying any one signal when the electrical signal output from the first optical receiving port and the alarm signal originating from the detector or the transmitter at the same time. Optical repeater, characterized in that. The optical uplink according to claim 11, wherein the upstream branch is a packet encoder that encodes and outputs a single packet when simultaneously receiving an electrical signal output from the first optical reception port and an alarm signal from a detector or a transmitter. Repeater. The method of claim 10, wherein the downlink signal path is A second light receiving port for outputting an electrical signal electrically converted from a signal optically transmitted from a previous light converter connected by a daisy chain; A down branch for providing an electrical signal output from the second optical reception port to the relay control unit and a second optical transmission port; And And the second optical transmission port for optically converting and outputting an electrical signal output from the downward branch. 18. The optical repeater of claim 17, wherein the downward branch is a tap connecting an output wire of the second optical receiving port and a wire connected to the relay control unit. 18. The optical apparatus of claim 17, wherein the downward branch includes a detection circuit configured to detect a control signal to be transmitted to one of the disaster prevention facilities among the electrical signals output from the second optical reception port and output the detected control signal to the relay controller. Repeater. A number of sensors / transmitters that issue an alarm signal; A plurality of disaster prevention facilities operating in accordance with the control signal; A plurality of repeaters connected to the detector / senders and disaster prevention facilities; A plurality of daisy chains connected to each other via an optical cable to optically transmit the alarm signal, optically transmit the control signal, and electrically input and output the alarm signal and the control signal to the repeaters. Photoconverters; And An R-type / GR-type receiver system that receives the alert signal from one of the photoconverters and transmits the control signal to the one of the photoconverters. The method of claim 20, And a single port photoconverter optically connected with the one of the photoconverters and electrically connected with the R / GR receiver. A number of sensors / transmitters that issue an alarm signal; A plurality of disaster prevention facilities operating in accordance with the control signal; Connected to the detector / transmitters and disaster prevention facilities, daisy chained together via an optical cable to optically transmit the alert signal, and also optically transmit the control signal, to the detector / transmitters A plurality of optical repeaters capable of electrically inputting and outputting the alarm signal and the control signal to the disaster prevention facilities respectively; And An R-type / GR-type receiver that receives the alert signal from one of the optical repeaters and transmits the control signal to the one of the optical repeaters. 23. The method of claim 22, And a single port optical converter optically connected to said one of said optical repeaters and electrically connected to said R-type / GR-type receiver.

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