JP2015230653A - Disaster prevention facilities - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably perform interlocking control in the case of transmission between a fire alarm facility and an emergency broadcasting facility, thereby improve reliability.SOLUTION: A fire receiver 14 and the emergency broadcasting device 20 are connected to each other by a transmission path 28 and also by a transfer line 30 of one line. The fire receiver 14 transmits signals for each floor and signals for fire confirmation to the emergency broadcasting device 20 by the transmission path 28, and transmits alarm representing signals representing a sensor alarm interlocked with the transmission of the signals for each floor to the emergency broadcasting device 20 through the transfer line 30. The emergency broadcasting device 20 performs sensor alarm broadcasting on the basis of the receipt of both the signals for each floor and the alarm representing signals or the receipt of at least one of them, and performs fire broadcasting on the basis of the receipt of subsequent fire confirmation signals.

Description

  The present invention relates to a disaster prevention facility that automatically broadcasts from an emergency broadcast facility in conjunction with a fire detection by a fire alarm facility.

  Conventionally, an emergency broadcasting facility is linked to a fire alarm facility, and when a fire occurs, it notifies the occurrence of the fire and performs an evacuation guidance broadcast.

  The fire receiver installed in the fire alarm facility outputs a fire alarm when a fire alarm signal is received from a fire alarm that has been detected and detected, and a fire alarm area indicating the fire alarm area The emergency broadcast device that has transmitted the floor signal as an identification signal to the emergency broadcast device and received this signal from the speaker installed on the floor where the fire occurred and the floor directly above it as a detector alarm broadcast is now "Please check the next broadcast."

  When a predetermined time elapses for this alarm, or when a disaster prevention staff member visits the site and confirms a fire, the fire is received based on a fire confirmation operation such as a push button operation of the transmitter. A fire confirmation signal is sent from the aircraft to the emergency broadcasting device, and the detector alarm broadcast is switched to the fire broadcast. “Fire is on fire. Fire on the XX floor has occurred. Is output. In addition, when a predetermined set time has passed since the fire broadcast, the emergency broadcast apparatus switches to the entire building simultaneous broadcast.

  On the other hand, when a non-fire is confirmed by visiting the site, the non-fire broadcast switch is switched from the previous broadcast to the non-fire broadcast by operating the non-fire broadcast switch provided in the emergency broadcast device. As a result of the confirmation, there was no abnormality. Please rest assured. "

JP-A-5-233984 JP-A-6-314385

  By the way, the conventional fire alarm facility and the emergency broadcast facility are connected by a number of signal lines corresponding to the number of signals transmitted and received between the fire receiver and the emergency broadcast device. The number of signal lines connecting the fire detector and the emergency broadcast device is, for example, 30 if the building to be installed is on the 30th floor (including the basement floor) and sends a signal from the fire receiver to the emergency broadcast device. It requires a total of 34 floor signal lines and a pair of fire confirmation signal lines, a ringing stop signal line for sending signals from the emergency broadcasting device to the fire receiver, and a common line common to the floor signal line and ringing stop signal line. In addition, use heat-resistant wiring in accordance with firefighting laws and regulations.

  For this reason, it is necessary to connect the fire receiver and the emergency broadcasting device with a large number of heat-resistant wiring, and in particular, the number of floor-level signal lines will increase according to the number of floors of the target building, and the wiring storage space corresponding to this will be increased. There is a problem that the wiring is difficult.

  In order to solve this problem, so-called transmission in which the number of wires is reduced by connecting the fire receiver and the emergency broadcast apparatus by a transmission line such as a LAN cable is conceivable.

  However, when transmission is performed between a fire receiver and an emergency broadcasting device, signal transmission reliability is reduced due to failures or transmission errors of equipment provided in the transmission system, compared to conventional wiring connections corresponding to the number of signals. There is a risk of lowering.

  Even if there is a failure or transmission error in the transmission system in this way, it is actually not possible to send a broadcast signal or fire signal by transmitting a floor signal or fire signal from a fire receiver. It may take time to notice a transmission system failure or transmission error, and when an actual fire occurs, the emergency broadcast cannot automatically start in conjunction with the fire alarm. There is concern about what happens.

  An object of this invention is to provide the disaster prevention equipment which improves the reliability by performing the interlocking control at the time of transmission between a fire alarm equipment and an emergency broadcast equipment.

(Disaster prevention equipment: Redundant transmission line and transmission line)
The present invention is a fire receiver provided in a fire alarm facility. When a fire alarm is received by detecting a fire in a warning area and a fire alarm is output, the fire alarm area is defined. The broadcast area identification signal shown is sent to the emergency broadcast equipment installed in the emergency broadcast equipment to make the sensor alert broadcast, and when the fire confirmation is detected after receiving the alert signal, the fire confirmation signal is sent to the emergency broadcast equipment In disaster prevention equipment that transmits to the sensor broadcasting
Connect the fire receiver and the emergency broadcast device via a transmission line and a single transmission line.
The fire receiver transmits a notification area identification signal and a fire confirmation signal to the emergency broadcasting device via a transmission line, and also transfers a notification representative signal representing the sensor notification in conjunction with the transmission of the notification area identification signal. Sent to the emergency broadcast equipment over the line,
The emergency broadcast device is characterized in that it performs detector alarm broadcast based on reception of a report area identification signal and a report representative signal, and performs fire broadcast based on subsequent reception of a fire confirmation signal.

(Reliability mode: AND linkage of the reporting area identification signal and the reporting representative signal)
When the emergency broadcast apparatus receives both the report area identification signal and the report representative signal, the emergency broadcast apparatus performs a predetermined sensor report broadcast including the report area information in a predetermined alert area including the report area.

(Fail-safe mode: OR linkage of reporting area identification signal and reporting representative signal)
The emergency broadcasting device performs predetermined sensor notification broadcasting when receiving at least one of the notification area identification signal and the notification representative signal.

(Broadcast contents by OR of reporting area identification signal and reporting representative signal)
Emergency broadcast equipment
If at least a notification area identification signal is received, a predetermined sensor notification broadcast including the notification area information is performed in a predetermined warning area including the notification area,
When the reporting representative signal is received without receiving the reporting area identification signal, a predetermined sensor reporting broadcast that does not include the reporting area information is performed in all the warning areas.

  In addition, the emergency broadcasting device sends the alert representative signal for a certain period of time without receiving the alert area identification signal while performing the alert broadcast of the prescribed sensor that does not include the alert area information in all the alert areas. If the message is continuously received, a predetermined fire broadcast that does not include the reporting area information is performed in all the warning areas.

(Fire safety signal fail-safe)
Connect the fire receiver to the emergency broadcast system with two additional lines, one additional line,
The fire receiver is linked to the transmission of the fire confirmation signal through the transmission line, and sends the fire confirmation signal to the emergency broadcasting device through the added transmission line.
The emergency broadcasting device performs fire broadcasting when a fire confirmation signal is received by at least one of the transmission line and the added transmission line.

(Basic effect)
The present invention relates to a disaster prevention facility composed of a fire receiver provided in a fire alarm facility and an emergency broadcast device provided in an emergency broadcast facility, wherein the fire receiver and the emergency broadcast device are connected by a transmission line and one line is transferred. The fire receiver sends a notification area identification signal (floor signal) and a fire confirmation signal to the emergency broadcasting device via the transmission line, and the detector emits in conjunction with the transmission of the notification area identification signal. An alert representative signal representing the information is transmitted to the emergency broadcast device via the transfer line, and the emergency broadcast device performs the sensor alert broadcast based on the reception of the alert area identification signal and the alert representative signal, and then Fire broadcast is performed based on the reception of the fire confirmation signal of, so, for example, a LAN cable and two heat-resistant wirings constituting one transmission line are formed between the fire receiver and the emergency broadcast device. And connection only It finished, reducing the wiring storage space between the emergency broadcast devices and fire receiver, also to facilitate laying operation by wire routing.

  In addition, the signal transmission for the fire alarm is substantially doubled by transmitting the report area identification signal (floor signal) by the transmission line and the report representative signal by the transfer line, and the emergency broadcast linked based on the fire detection Reliability and fail-safety (failure durability) can be improved.

(Reliability mode: Effect of AND combination of reporting area identification signal and reporting representative signal)
In addition, when the emergency broadcasting device receives both the reporting area identification signal and the reporting representative signal, the emergency broadcasting apparatus performs a predetermined detector reporting including the reporting area information in a predetermined warning area including the reporting area. As a result, the emergency broadcast equipment does not receive both of them even if the notification area identification signal or the notification representative signal is erroneously sent from the transmission line or the transmission line due to the inspection of the fire alarm equipment. It is possible to reliably prevent misbroadcasts that occur during inspections of fire alarm equipment.

(Fail-safe mode: Effect of OR linkage of reporting area identification signal and reporting representative signal)
In addition, the emergency broadcasting device performs predetermined sensor notification broadcasting when receiving at least one of the notification area identification signal and the notification representative signal. Even if a failure such as a failure occurs in any of the transfer systems by the system, it is possible to send a notification area identification signal or a notification representative signal to the emergency broadcasting device without fail and perform a notification broadcast. It is possible to exhibit a high fail-safe function.

  In addition, when the emergency broadcast device receives at least the reporting area identification signal, the emergency broadcasting device performs the predetermined sensor reporting broadcast including the reporting area information in the predetermined warning area including the reporting area, When the alert representative signal is received without receiving the identification signal, the predetermined detector alert broadcast that does not include the alert area information is performed in all the alert areas, so that the alert linked to the alert representative signal is sent. Information broadcasting is broadcast content that does not have information of the reporting area such as the fire occurrence floor, but by making it a simultaneous broadcasting for all warning areas, it should fully demonstrate the function as a reporting broadcast Make it possible.

  In addition, the emergency broadcasting device sends the alert representative signal for a certain period of time without receiving the alert area identification signal while performing the alert broadcast of the prescribed sensor that does not include the alert area information in all the alert areas. If it has been received continuously, it has been decided that the fire alarm representative signal has continued for more than a predetermined time because of the fire broadcast that does not include the alarm area information in all the warning areas. The so-called simultaneous fire broadcasting is performed to notify the occurrence of a fire and enable prompt evacuation.

(Effect of fail-safe fire confirmation signal)
In addition, the fire receiver is connected to the emergency broadcast device by two additional transmission lines, and the fire receiver is fired by the additional transmission line in conjunction with the transmission of the fire confirmation signal through the transmission line. A confirmation signal is sent to the emergency broadcast device, and when the emergency broadcast device receives a fire confirmation signal via at least one of the transmission line and the added transmission line, the fire broadcast is performed. As for fire broadcasts, it is possible to double the transmission of fire confirmation signals to demonstrate a high fail-safe function against failures.

Explanatory diagram showing the outline of the disaster prevention equipment that connects the fire alarm equipment and the emergency broadcast equipment with a transmission line and one line Block diagram showing functional configuration of fire receiver and emergency broadcast equipment The circuit block diagram which showed the circuit structure of the floor-by-step report part provided in the fire receiver of FIG. Block diagram showing the functional configuration when fire alarm equipment and emergency broadcast equipment are connected by a transmission line and two transfer lines

[Outline of disaster prevention equipment]
FIG. 1 is an explanatory view showing an outline of a disaster prevention facility in which a fire alarm facility and an emergency broadcast facility are connected to a transmission line by one transfer line.

As shown in FIG. 1, the fire alarm facility 10 includes a fire receiver 14, the emergency broadcast facility 12 includes an emergency broadcast device 20, and a transmission line 28 and one line between the fire receiver 14 and the emergency broadcast device 20. The emergency broadcast device 20 performs emergency broadcasting in conjunction with the fire reception of the fire receiver 14.
(Overview of fire alarm equipment)
As shown in FIG. 1, the fire alarm system 10 includes a fire receiver 14, and the sensor lines L <b> 1 to Ln are drawn from the fire receiver 14 for each warning area, and the sensor line L <b> 1 is connected to the common line C. As representatively shown, a fire detector 16 is connected.

  The fire sensor 16 is a smoke sensor, a heat sensor, or the like, detects a change in a physical phenomenon such as smoke or heat caused by a fire, issues a notification, and transmits a notification signal to the fire receiver 14. When the fire receiver 14 receives the alarm signal from the fire detector 16, it outputs a fire alarm.

  A transmitter 18 is connected between the sensor line L1 and the common line C as necessary, and a response signal line A is further connected to the transmitter 18 from the fire receiver 14. Further, since the transmitter 18 is provided with a telephone jack, the telephone line T is connected from the fire receiver 14.

  The transmitter 18 transmits a transmission signal to the fire receiver 14 by a switch operation by a push button operation of a fire discoverer or the like, and the fire receiver 14 that receives this transmission signal detects a fire confirmation and outputs a fire alarm. A response signal is transmitted to the response signal line A and a response indicator lamp provided in the transmitter 18 is turned on to notify that a fire has been received.

  When the fire alarm operation of the fire receiver 14 receives an alarm signal from the fire detector 16, it outputs a fire alarm sound by turning on or blinking the fire representative light and at the same time the sensor line where the fire alarm has occurred. Illuminate or blink the district indicator lamp corresponding to In response to this fire alarm, personnel at the Disaster Prevention Center, etc. go to the site where the fire was reported, and if a fire is confirmed, should the fire confirmation switch provided on the fire receiver 14 be operated by contacting the Disaster Prevention Center? Or, by operating the transmitter 18 installed near the fire site and transmitting a transmission signal, the fire receiver 14 detects a fire confirmation and performs output control of the district acoustic alarm.

  Further, when the fire receiver 14 detects a fire alarm and a fire confirmation, it performs a transfer operation of outputting an interlock signal to an external device including the emergency broadcast facility 12. Examples of the interlocking signals that the fire receiver 14 outputs to the emergency broadcast facility 12 include a report area identification signal, a report representative signal, and a fire confirmation signal.

  The reporting area identification signal is a signal indicating a reporting area corresponding to the sensor lines L1 to Ln that the fire sensor 16 has reported. For example, a building on the 11th floor or higher where the emergency broadcast facility 12 is required to be installed. If so, a floor signal indicating the fire alarm floor is transmitted to the emergency broadcast apparatus 20 via the transmission path 28. In the following description, the reporting area identification signal is described as a floor signal.

  The notification representative signal is a signal representatively indicating that the fire receiver 14 has received the notification signal from the fire detector 16, and is transmitted through the transmission line 30 in conjunction with the transmission of the floor signal via the transmission path 28. It is transmitted to the emergency broadcast device 20 and is different from the floor signal in that the issue floor is not known.

  The fire confirmation signal is a signal that is transmitted to the emergency broadcast apparatus 20 through the transmission line 28 when the fire receiver 14 detects a fire confirmation after the alarm is issued.

  Further, when the fire receiver 14 receives a ringing stop signal from the emergency broadcast equipment 12 through the transmission path 28 while ringing the district bell based on the reception of the fire, the fire receiver 14 stops the ringing of the district bell.

(Outline of emergency broadcasting equipment)
As shown in FIG. 1, the emergency broadcast facility 12 includes an emergency broadcast device 20. As an external device, for example, a desktop microphone device 22 used for general business broadcast, a background music (BGM), a chime sound source, etc. A sound source device 24 including an audio file, a radio tuner, a CD player, and an emergency earthquake warning device 25 are connected as necessary.

  Further, a speaker line SL is drawn out from the emergency broadcasting device 12, and the speaker line SL is drawn out for each broadcasting area such as a floor of a building, for example, and a plurality of speakers 26 are connected to each line. . The speaker 26 is installed with an output sound pressure determined by firefighting laws and regulations according to the installation location such as a living room, a non-living room, a corridor, and a staircase. In addition, one speaker line SL uses three signal lines, a normal broadcast line N, an emergency broadcast line R, and a common line C. The normal broadcast line R may be provided with an attenuator (attenuator) for volume adjustment on the speaker branch side.

  The emergency broadcast device 20 selects the speaker line on the floor where the fire occurred and the floor directly above when the floor signal is received from the fire receiver 14 of the fire alarm facility 10 through the transmission path 28 as basic broadcast control by the interlocking signal. Then, a predetermined sensor notification broadcast is output from the speaker. In addition, the basement floor is included when the fire occurrence floor is the first floor.

  In addition, when the emergency broadcast device 20 receives a fire confirmation signal from the fire receiver 14 through the transmission path 28 after performing the detector alarm broadcast, the emergency broadcast device 20 outputs a predetermined fire broadcast from the speakers on the fire occurrence floor and directly above the floor. . Further, when a predetermined time has elapsed since the fire broadcast, the broadcast broadcast is switched to the broadcast broadcast that outputs the fire broadcast from the speakers on all floors.

  In addition to this, the emergency broadcast apparatus 20 according to the present embodiment performs broadcast control in combination with reception of the classified signal through the transmission line 28 and reception of the notification representative signal through the transmission line 30.

  In addition, when the non-fire is confirmed on-site and the non-fire broadcast switch is operated, the emergency broadcast device 20 outputs a predetermined non-fire broadcast from the speakers on the fire occurrence floor and directly above the floor.

[Functional configuration on the fire receiver side]
FIG. 2 is a block diagram showing the functional configuration of the fire receiver and the emergency broadcast device, and FIG. 3 is a circuit block diagram showing the circuit configuration of a notification representative transfer unit provided in the fire receiver of FIG.

  As shown in FIG. 2, the fire receiver 14 includes a reception control unit 32. The reception control unit 32 is a function realized by executing a program, for example, and includes hardware such as a CPU, a memory, and various input / output ports. Use a computer circuit equipped with

  For the reception control unit 32, a notification receiving unit 34, a display unit 36, an operation unit 38, an alarm unit 40, a transmission unit 42, and a notification representative transfer unit 44 are provided.

  The alarm receiving unit 34 is provided corresponding to the detector lines L1 to Ln, receives and outputs the alarm signal from the fire detector 16, and outputs the alarm signal from the transmitter 18 shown in FIG. Receive and output. Here, the alert signal from the fire detector 16 connected to the same sensing line L1 shown in FIG. 1 is distinguished from the alert signal from the transmitter 18 by changing the respective resistance values. The signal current of the transmission signal is different from the signal current of the transmission signal, and the reception control unit 32 determines whether the signal is a transmission signal or a transmission signal from the difference in reception voltage due to the signal current flowing in the reception-side resistor provided in the notification reception unit 34. It is possible to detect them separately.

  The display unit 36 is provided with various indicator lamps and displays such as a display necessary for fire monitoring such as a fire representative lamp and a district indicator lamp.

  The operation unit 38 is provided with various switches necessary for fire monitoring, such as a main sound stop switch and a district sound stop switch.

  The alarm unit 40 includes a speaker, and outputs a fire alarm, a fault alarm, and the like by main sound, and outputs an operation sound associated with a switch operation and various guidance sounds.

  The transmission unit 42 transmits a packet format floor signal or a fire confirmation signal composed of a header part and a data part to the emergency broadcast apparatus 20 via the LAN cable constituting the transmission path 28 based on the instruction of the reception control unit 32. In addition, a ringing stop signal in the packet format is received from the emergency broadcast apparatus 20 via the transmission path 28.

  Here, the transmission unit 42 performs transmission control by a combination of Ethernet (registered trademark), which is a physical standard known as a LAN protocol, and a TCP / IP protocol (IP layer and TCP layer standard).

  For example, 1000BASE-T is used as the Ethernet (registered trademark). 1000BASE-T uses category 5E (enhanced category 5) or higher of the heat resistance specification as a LAN cable. Category 5E LAN cable is an 8-core cable that combines four pairs of twisted wires (twist wires). 1000BASE-T uses all four pairs of 8 cores and has a transmission speed of 100 Mbps within 100 meters. It can be realized by transmission distance.

  For this reason, a category 5E compatible LAN cable with transmission connector plugs connected to both ends may be used as the transmission line 28, and the fire receiver 14 and the emergency broadcast device 20 are installed adjacent to or close to the room of the same disaster prevention center. Therefore, the LAN cable connecting the fire receiver 14 and the emergency broadcast device 20 may be about several meters, for example, and there is no problem of increasing the transmission distance.

  The notification representative transfer unit 44 is operated in conjunction with the control in which the reception control unit 32 instructs the transmission unit 42 to transmit the floor signal through the transmission path 28, and receives the notification signal from the fire detector 16. A notification representative signal representatively indicating this is transmitted to the emergency broadcast apparatus 20 through the signal line EL and the common line C constituting the transmission line 30.

  Here, as shown in FIG. 3, the notification representative transfer unit 44 includes a relay 100 that is operated by the reception control unit 32, and the signal line EL common to the signal line EL of the transfer line 30 is connected to the normally open relay contact 102 of the relay 100. The line C is connected, and the notification representative signal is output as a so-called no-voltage contact signal.

  The reception control unit 32 instructs the display unit 36 and the alarm unit 38 when a fire alarm is detected from the reception output of the alarm signal by any of the alarm receivers 34 corresponding to the sensor lines L1 to Ln. Controls to display the representative fire display and fire area and to output a fire alarm sound.

  In addition, when detecting a fire alarm, the reception control unit 32 generates a floor signal including floor information indicating the floor of the alarm, and instructs the transmission unit 42 to convert the floor signal into a packet format. Control to transmit to the emergency broadcast apparatus 20 through the transmission path 28 is performed.

  The reception control unit 32 operates a relay provided in the notification representative transfer unit 44 in conjunction with the transmission of the floor signal by the transmission unit 42, closes the relay contact, and sends the notification representative signal to the transmission line. 30 is used to control transmission to the emergency broadcast apparatus 20.

  In addition, the reception control unit 32 generates a fire confirmation signal including fire confirmation information when detecting a fire confirmation from receiving a transmission signal or operating a fire determination switch after detecting a fire alarm, and transmits the transmission unit 42. Is converted into a packet-type fire confirmation signal and transmitted to the emergency broadcast apparatus 20 via the transmission path 28.

  The reception control unit 32 performs control to stop the ringing of the district bell while the transmission unit 42 detects the reception of the ringing stop signal from the emergency broadcast device 20 during the ringing of the district bell.

[Functional configuration of emergency broadcast equipment]
As shown in FIG. 2, the emergency broadcast device 20 includes a control unit 48, and the control unit 48 is a function realized by executing a program, for example, and includes a CPU, a memory, various input / output ports and the like as hardware. Use computer circuit etc.

  For the control unit 48, a transmission unit 50, a notification representative receiving unit 52, a display unit 54, an operation unit 56, a broadcast sound source unit 58, a microphone 60 provided with a microphone switch (not shown), and a broadcast input selection unit 62. And the broadcast output selection part 64 is provided.

  The transmission unit 50 is the same as the transmission unit 42 of the fire receiver 14 and is a physical standard known as a LAN protocol, Ethernet (registered trademark) and a TCP / IP protocol (IP layer and TCP layer standards). And a packet-type floor signal or a fire confirmation signal is received from the fire receiver 14 via the transmission path 28, and a packet-type ringing stop signal is transmitted according to an instruction from the control unit 48. To the fire receiver 14.

  The notification representative receiving unit 52 applies a predetermined voltage between the relay contacts of the notification representative transfer unit 44 of the fire receiver 14 via the signal line EL and the common line C of the transfer line 30. When the relay contact is closed by the operation of the relay of the report representative transfer unit 44, a signal current flows, and a reception voltage between the signal lines is output to the control unit 48 to detect reception of the report representative signal.

  The operation unit 56 is provided with an emergency broadcast switch, a line selection switch, a non-fire broadcast switch, and the like, and the display unit 54 is provided with an indicator lamp corresponding to the switch of the operation unit 56.

  The broadcast sound source unit 58 stores broadcast message information such as detector alarm broadcasts, fire broadcasts, non-fire broadcasts, emergency broadcasts such as earthquakes and thefts, and training broadcasts, and broadcast messages received instructions from the control unit 48. Information is read and converted into an analog broadcast signal and output. Here, the broadcast sound source unit 58 has two types of detector notification broadcasts corresponding to the sensor notification broadcast including information indicating the fire occurrence floor and the sensor notification broadcast not including information indicating the fire occurrence floor. Broadcast message information is stored.

  The microphone 60 is provided on the operation panel of the emergency broadcast device 20, and allows a person in charge of the disaster prevention center to perform broadcast input instructing evacuation guidance or the like as necessary. Further, when the clerk picks up the microphone 60 from the operation panel, the microphone switch is turned on, a detection signal indicating that the microphone is used is output to the control unit 48, and a ringing stop signal is transmitted to the fire receiver 14 through the transmission path 28.

  The broadcast input selection unit 62 inputs and connects the broadcast sound source unit 58, the microphone 60, the external desktop microphone device 22, the sound source device 24, and the earthquake early warning device 25, and selects a specific broadcast input according to an instruction from the control unit 48. To the broadcast output selection unit 64.

  The broadcast output selection unit 64 outputs the broadcast signal input from the broadcast input selection unit 62 to a line selected from the speaker lines SL1 to SLn according to an instruction from the control unit 48, and outputs the broadcast from the speaker. In addition, the broadcast output selection unit 64 is provided with a power amplifier, which enables the necessary sound pressure output of the speaker. The power amplifier may be provided for each speaker line, or a predetermined number of speaker lines may be grouped and provided for each group.

[Linked broadcast control of broadcast control device]
The control unit 48 provided in the emergency broadcast device 20 controls the sensor alarm broadcast based on the reception of the floor signal by the transmission unit 50 and the notification representative signal by the notification representative reception unit 52, and the subsequent transmission unit Based on the reception of the fire confirmation signal by 50, the fire broadcast is controlled.

  There are two types of detector alarm broadcast control by the control unit 48, a reliability mode and a fail safe mode, and any mode is set in advance prior to the start of operation of the emergency broadcast facility 12.

(Reliability mode)
When the reliability mode is set by a predetermined operation, the control unit 48 generates a fire when both the reception of the floor signal by the transmission unit 50 and the reception of the notification representative signal by the notification representative reception unit 52 are detected. Instruct the broadcast output selection unit 64 to select the speaker lines on the floor and the floor directly above, and also instruct the broadcast sound source unit 58 to reproduce and output the sensor notification broadcast signal including the information indicating the notification floor. The input selection unit 62 is instructed to select the sensor notification broadcast signal from the broadcast sound source unit 58, and control to output the sensor notification broadcast from the speakers on the floor where the fire occurred and directly above.

  In this case, the detector alarm broadcast is, for example, “The fire alarm on the XX floor has just been activated. Please be aware of the next broadcast.” The information of the fire occurrence floor is included. After that, when a fire confirmation signal is received by the transmission unit 50, for example, "Fire is on fire. Fire on the XX floor has occurred. Please calm down and evacuate." Controls the output of fire broadcasts that include information about the fire floor.

  In the broadcast control by this reliability mode, even if the reporting area identification signal or the reporting representative signal is mistakenly transmitted due to noise or the like from the transmission line 28 or the transmission line 30 due to the inspection of the fire alarm facility 10, When both are not received, the emergency broadcast device 20 does not perform the sensor notification broadcast, and can reliably prevent erroneous broadcasts that occur during the inspection of the fire alarm facility 10.

(Fail-safe mode)
When the fail mode is set by a predetermined operation, the control unit 48 detects at least one of reception of the floor signal by the transmission unit 50 and reception of the notification representative signal by the transfer representative reception unit 52. Controls to output the sensor alert broadcast.

  In this sensor alarm broadcast control, the broadcast contents and broadcast areas differ depending on whether the reception of the floor signal is detected or the reception representative signal is detected.

  When the control unit 48 detects the reception of the floor signal by the transmission unit 50, the control unit 48 instructs the broadcast sound source unit 58, the broadcast input selection unit 62, and the broadcast output selection unit 64, and from the speakers on the fire occurrence floor and the immediately above floor, For example, "The fire alarm on the XX floor has just been activated. Please be aware of the next broadcast." Control to output the device alarm broadcast.

  On the other hand, the control unit 48 detects the reception representative signal received by the notification representative reception unit 52 and does not receive the floor signal by transmission, the broadcast sound source unit 58, the broadcast input selection unit 62, and the broadcast output. Since the fire occurrence floor is unknown in this case, the selection unit 64 is instructed. From the speakers on all floors, for example, “The fire alarm has been activated. "Please note." Controls to output a sensor alert broadcast that does not include information on the floor where the fire occurred, such as "of the XX floor", that is, a so-called simultaneous broadcast of the entire building.

  According to the broadcast control in the fail-safe mode, even if a failure such as a failure occurs in either the transmission system using the transmission path 28 or the transmission system using the transmission line 30, a notification area identification signal is sent from the fire receiver 14. Alternatively, since the notification representative signal is surely sent to the emergency broadcast device 20 to perform the sensor notification broadcast, it is possible to exhibit a high fail-safe function against the occurrence of a failure.

  In addition, when the reception of a notification representative signal with an unknown fire floor is detected, broadcasts are broadcast in all alert areas, so a fire may occur even if the content does not include the fire floor. It is possible to make full use of the function as a detector alerting broadcast.

  Further, the control unit 48 receives the notification representative signal and performs broadcast notification throughout the entire building that does not include the information on the floor where the fire occurred. If it continues for more than this time, “Fire is on fire. Fire has occurred. Please calm down and evacuate.” Control is performed to output a news broadcast, a so-called general fire broadcast.

[Redundant fire confirmation signal]
FIG. 4 is a block diagram showing a functional configuration when a fire alarm facility and an emergency broadcast facility are connected by a transmission line and two transfer lines, and is characterized in that the transmission of a fire confirmation signal is also duplicated.

  As shown in FIG. 4, the fire receiver 14 includes a reception control unit 32, a display unit 36, an operation unit 38, an alarm unit 40, a transmission unit 42, and a notification representative transfer unit 44. Although it is the same as that of the embodiment, a fire confirmation transfer unit 70 is further provided for the reception control unit 32, and a transmission line using the fire confirmation signal line EF and the common line C is added to form two lines.

  The fire confirmation transfer unit 70 closes the relay contact by the operation of the relay and outputs a fire confirmation signal as a no-voltage contact signal, similarly to the notification representative transfer unit 44 shown in FIG.

  The reception control unit 32 operates the relay of the fire confirmation transfer unit 70 in conjunction with the transmission of the fire confirmation signal by the transmission unit 42 and transmits the fire confirmation signal to the emergency broadcasting device 20 by closing the relay contact. Take control. Other control of the reception control unit 32 is the same as in the case of FIG.

  On the other hand, the emergency broadcast device 20 includes a control unit 48, a transmission unit 50, a notification representative reception unit 52, a display unit 54, an operation unit 56, a broadcast sound source unit 58, a microphone 60, a broadcast input selection unit 62, and a broadcast output selection unit 64. This point is the same as that of the embodiment of FIG. 2, but further, a fire confirmation receiving unit 72 is provided to receive a fire signal from the fire confirmation transfer circuit 70 of the fire receiver 14 and to the control unit 48. I am trying to output.

  As described above, since the transmission of the fire confirmation signal is also duplicated, in the fail-safe mode, when a failure such as a failure occurs in the transmission system by the transmission line 28 or the transmission line, the fire confirmation signal is transmitted reliably. By performing the above, it becomes possible to exhibit a high fail-safe function against the occurrence of a failure.

  In addition, since the transmission of the fire confirmation signal is also duplicated, in the reliability mode, when both the reception of the fire confirmation signal by the transmission unit 50 and the reception of the fire confirmation signal by the fire confirmation reception unit 72 are detected, a fire broadcast is performed. Even if a fire confirmation signal is mistakenly sent from the transmission line or the transmission line due to the inspection of the fire alarm equipment, the emergency broadcast device does not perform fire broadcast because there is no reception of both, so the fire alarm equipment It is possible to reliably prevent misbroadcasts that occur during inspections.

[Modification of the present invention]
(Transmission method)
The above embodiment is an example in which parallel transmission is performed between a fire receiver and an emergency broadcast device using a LAN cable including an 8-core signal line as a transmission path by a combination of Ethernet (registered trademark) and TCP / IP. However, serial transmission may be performed using a LAN cable including two pairs of signal lines each including a pair of uplinks and a pair of downlinks as a transmission line. In addition, transmission between the fire receiver and the emergency broadcast apparatus can be applied with an appropriate protocol as necessary.

(Wireless transmission)
In the above embodiment, the wired transmission in which the fire receiver and the emergency broadcast apparatus are connected by a transmission line such as a LAN cable is used, but wireless transmission may be used. As this wireless transmission, for example, a specific low-power radio of 400 MHz band, a specific low-power radio using 5 GHz band or 2.4 GHz band, a specific low-power radio using 920 MHz band, or a wireless network using Ethernet (registered trademark). A wireless LAN such as WiFi based on IEEE802.11 may be used.

(Fire receiver)
The above embodiment is an example of a P-type receiver that detects and alerts a fire on a line-by-line basis. However, an address is set for a fire detector or transmitter, and a sensor unit and a transmitter unit. The same applies to R-type receivers that detect and warn of fire.

(Other)
The present invention includes appropriate modifications without impairing the object and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Fire alarm facility 12: Emergency broadcast facility 14: Fire receiver 16: Fire detector 18: Transmitter 20: Emergency broadcast device 22: Desktop microphone device 24: Sound source device 25: Earthquake early warning device 26: Speaker 28: Transmission Route 30: Transmission line 32: Reception control unit 34: Notification reception unit 42, 50: Transmission unit 44: Notification representative transfer unit 52: Notification representative reception unit 56: Broadcast sound source unit 62: Broadcast input selection unit 64 : Broadcast output selection unit 70: Fire confirmation transfer unit 72: Fire confirmation reception unit

Claims (6)

An alarm area that indicates the fire alarm area when a fire alarm is output by receiving a signal from a fire detector that is triggered by detecting a fire in the alert area with a fire receiver installed in the fire alarm facility Sending the identification signal to the emergency broadcast device installed in the emergency broadcast facility to perform the sensor alarm broadcast, and when the fire confirmation is detected after receiving the alarm signal, the fire confirmation signal is transmitted to the emergency broadcast device In disaster prevention facilities that make fire broadcasts,
The fire receiver and the emergency broadcast device are connected by a transmission line and connected by a single transmission line,
The fire receiver transmits the notification area identification signal and the fire confirmation signal to the emergency broadcasting device through the transmission line, and represents the detector notification in conjunction with the transmission of the notification area identification signal. Send an alert representative signal to the emergency broadcast device via the transfer line,
The emergency broadcasting device performs the detector reporting broadcast based on reception of the reporting area identification signal and the reporting representative signal, and performs the fire broadcasting based on the subsequent reception of the fire confirmation signal. Disaster prevention equipment characterized by
2. The disaster prevention device according to claim 1, wherein the emergency broadcasting device issues a notification in a predetermined warning area including the notification area when both the notification area identification signal and the notification representative signal are received. A disaster prevention device that broadcasts a predetermined detector that includes area information.
2. The disaster prevention device according to claim 1, wherein the emergency broadcasting device performs predetermined sensor notification broadcasting when receiving at least one of the notification area identification signal and the notification representative signal. Disaster prevention device characterized by
The emergency broadcast device according to claim 3, wherein the emergency broadcast device is:
If at least the notification area identification signal is received, perform a predetermined detector notification broadcast including the notification area information in the predetermined warning area including the notification area,
A disaster prevention device that performs predetermined sensor notification broadcasting that does not include notification area information in all warning areas when the notification representative signal is received without receiving the notification area identification signal .
5. The disaster prevention device according to claim 4, wherein the emergency broadcasting device receives the reporting area identification signal while performing the sensor reporting broadcasting that does not include the reporting area information in all the warning areas. A disaster prevention apparatus that performs predetermined fire broadcasting that does not include reporting area information in all the warning areas when the reporting representative signal is continuously received for a predetermined time or longer without being performed.
In the disaster prevention equipment according to claim 2 or 3,
Connect the fire receiver and the emergency broadcast device with two additional transmission lines, one more line,
The fire receiver transmits a fire confirmation signal to the emergency broadcast device through the added transmission line in conjunction with the transmission of the fire confirmation signal through the transmission line,
The emergency broadcasting apparatus, wherein the emergency broadcasting device performs the fire broadcasting when receiving the fire confirmation signal through at least one of the transmission line and the added transmission line.

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