JPS5849053B2 - Emergency broadcast device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency broadcasting device for making emergency broadcasts for evacuation guidance in the event of an emergency such as a fire or an earthquake.

Conventionally, as shown in FIG. 1, this type of broadcasting equipment generally includes a central monitoring room 1 such as a control center, a microphone 2 for business broadcasting, and a music playback device 3 such as a record or tape.
, a central broadcasting device consisting of an emergency broadcasting microphone 4, a siren sound generating section 5, a broadcasting switching device 6, a power amplifier 7, and a broadcasting selection control section 8 is provided, while floor IF, 2F, . . .
, nF, etc., a plurality of speakers 9 for broadcasting business broadcasts or emergency broadcasts are installed on the broadcast lines of each area.
Furthermore, in order to be able to make emergency calls between each warning area and the central monitoring room 1, an emergency telephone base unit 10 and an emergency telephone slave unit 1ia are installed.
, 1 lb, -, 1 ln, and the broadcast switching device 6 is activated by the incoming call output of the emergency telephone base unit 10 to link the emergency telephone equipment and the broadcast equipment.

In such an emergency broadcasting device, when the occurrence of a fire is notified from the emergency telephone handset or fire alarm equipment due to a fire, the broadcast switching device 6 switches to emergency broadcasting, and the siren sound generating section 5
is started and notifies the entire warning area of the outbreak of fire via the speaker 9, and also selects the entire area or a specific area with the broadcast selection control unit 8 and issues an evacuation guidance or fire extinguishing command using the emergency broadcast microphone 4. I'm trying to broadcast it.

By the way, with the above-mentioned emergency broadcasting equipment, if a fire occurs near central monitoring room 1, it may become difficult to continue emergency broadcasting as the fire spreads, or signal cables may be cut off. There is a risk that broadcasting to specific areas may be interrupted due to the fire burning down, and instructions such as evacuation guidance may be
Emergency calls are used to communicate with each warning area, but this makes it difficult to accurately grasp the situation on the ground, making it difficult to give accurate instructions.

The present invention has been made in view of the above, and uses a distributed system in which broadcasts from the center and broadcasts only for the area can be selected using emergency telephone handsets installed in each warning area in addition to the central broadcasting equipment. , in addition to emergency broadcasts from the central monitoring room.
Emergency broadcasts that convey accurate instructions tailored to the current situation at each district can be made directly from the emergency telephone handsets, giving us confidence that emergency broadcasts can be made in each district even in situations where central broadcasting is no longer possible. The purpose of this invention is to provide an emergency broadcasting device with excellent performance.

That is, according to the present invention, a central monitoring room of a control center, disaster prevention center, etc. is provided with a central broadcasting device that selects the entire warning area divided by floor or the like or a specific area and makes an emergency broadcast. For each warning area, there is an emergency telephone handset that provides an emergency passage between the power amplifier that drives the speaker and the emergency telephone main unit installed in the central monitoring room in the event of an emergency, and switch operation of this emergency telephone handset. and a selection control section for switching the telephone line from the emergency telephone base unit side to the power amplifier side and directly making an emergency broadcast to the area from the transmitter of the emergency telephone handset unit. An emergency broadcasting device is provided.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention.

First, to explain the configuration, the central monitoring room 1 includes, as in the past, a microphone 2 for general broadcasting, a music playback section 3, a microphone 4 for emergency broadcasting, a siren sound generator 5, a broadcast switching device 6, a booster amplifier 7, A central broadcasting device consisting of a broadcast selection control section 8 and a broadcast selection control section 8 is provided, and an emergency telephone main unit 10 is also installed in the same manner.

On the other hand, each caution area divided by floor of IF, 2F, ..., nF has district general broadcasting units 12a, 12b, ..., 12n, which are similar to the general broadcasting equipment of the central broadcasting equipment, and district general broadcasting units 12a, 12b, ..., 12n, Selection control unit 1 that selects any one of the signal, central broadcast signal (for business use and emergency use), and district emergency broadcast signal.
3a, 13b, ... 13n, and the power amplifier 14a,
14b, . ...
, 11n, the call signal from the handset is transmitted to the emergency telephone main unit 10.
Alternatively, changeover switches 15a, 15b, . . . , 15n are provided to switch and connect the selection control units 132 to 13n for each area.

FIG. 3 is a circuit block diagram showing an embodiment of the selection control unit 13 used in the present invention, and the selection control unit 13 is a relay A1 operated by a control signal e1 from the district broadcasting department.
These relays A, B, Depending on the operation of C, any of the broadcast signal E1 from the center, the district business broadcast signal E2 from the district business broadcast department, and the district emergency broadcast signal E3 when the changeover switch 15 of the emergency telephone handset 11 is switched to the district side. A selection circuit consisting of relay contacts a, b, and c for selecting one of the two is provided.

Broadcast signals E1, E2, E by relay contacts ayb+c
The selection circuit No. 3 is configured according to the priority of each broadcast signal, and in this embodiment, it is configured based on the following broadcast priorities.

(Priority order) (Broadcast content) 1st place District emergency broadcast (broadcast signal E3) 2nd place Central emergency broadcast (broadcast signal El) 3rd place District general broadcast (
Broadcasting signal E2) 4th place Central business broadcasting (broadcasting signal E1)
) That is, when none of relays A and B operate, each relay contact a and b switch as shown,
General broadcast signal E1 from the center is input to power amplifier 14 and broadcast from speaker 9, and when relay A is activated by control signal e1 from the district general broadcast section, contact a switches as shown by the dotted line and the district general broadcast is started. By selecting signal E2, district service broadcasting takes priority over central service broadcasting, and when emergency broadcast control signal e2 is applied from the center in this state, relay B is activated regardless of whether relay A is activated or not. When the relay contact b switches as shown by the dotted line to select the emergency broadcast signal E1 from the center and further closes the push button switch 16 of the emergency telephone handset 11, the relay C is activated and the contact C switches as shown by the dotted line, and relays A and B
The local emergency broadcast signal E3 from the emergency telephone handset 11 is selected regardless of the operating state of the emergency telephone handset 11.

Note that the configuration of the selection circuit using the relays A to C and their contacts a to c can be arbitrarily changed depending on how the priorities of the broadcast signals E1 to E3 are determined.

For example, if priority is given to emergency broadcasts from the center, relay contacts b and C may be exchanged.

FIG. 4 shows an embodiment of the central broadcasting device in the central monitoring room used in the present invention. In addition to the general broadcasting microphone 2, the central broadcasting section 1a includes a record cartridge 3a as a music reproduction section, A tape head 3b, a chime transmitter 30, etc. are provided, and a microphone 2 and a record cartridge 3 are provided.
a and the tape head 3b are amplified by a preamplifier 17 and then output.

On the other hand, the emergency broadcast section 1b is provided with an emergency broadcast microphone 4, a preamplifier 17, and a siren sound generator 5.

The broadcast switching device 6 also includes a switch 6a that switches between general broadcast and emergency broadcast, and a switch 6b that switches between the siren signal and microphone output of the emergency broadcast section 1b. The base unit switches to the emergency broadcast section 1b side in response to a signal when an emergency call is received or a fire signal from a fire alarm device, and the changeover switch 6b switches the microphone 4 side after the emergency siren is broadcast.
In conjunction with the operation of , the microphone 4 side is switched to perform an emergency broadcast.

Furthermore, the broadcast selection control unit 8 includes a changeover switch 18 for switching between simultaneous broadcasting and district broadcasting, and district selection switches 19a and 19 for selecting a specific district when switching to district broadcasting.
9b, . . . , 19n are provided, and by operating these changeover switches 18 and district selection switches 193 to 19H, a general broadcast or an emergency broadcast can be made to the entire district or a specific district.

In order to send the emergency broadcast control signal e2 to the selection control section 13 in each district shown in FIG. The control signal e2 (specific signal) can be superimposed and transmitted on the broadcast signal transmission line or smoke control control line, and the relay can be controlled by receiving it. For example, there is no need to increase the number of transmission lines. Furthermore, the emergency broadcast control signal e2 described above may be an alarm signal from a fire detector instead of being output from the central broadcasting device.

Next, the operation will be explained with reference to FIGS. 2, 3, and 4.

Now, suppose that the emergency phone handset 11a is taken away due to a fire outbreak at the IF, and the base phone 10 receives a call.
When the incoming call signal is output, the changeover switch 6a of the switching device 6 is switched as shown by the dotted line to switch to the emergency broadcast section 1b (see FIG. 4), and at the same time, the control section having the same configuration as the broadcast selection control section 8 (see FIG. (not shown) to select control unit i3a for each district.
13b, a control signal e2 instructing selection of emergency broadcast from the center is output.

As shown in FIG. 3, this control signal e2 activates relay B, switches its contact b as shown by the dotted line, and transmits the broadcast signal E1 from the center, that is, the siren and the emergency broadcast following the siren, to the power amplifier. Speaker 9 via 14
Flow more.

Such emergency broadcasts from the center are carried out by the broadcast selection control section 8.
selection operation, that is, the selector switch 18 shown in FIG.
This is done for all districts or a specific district by automatic or manual operation of the district selection switches 193 to 19n.

On the other hand, when it becomes necessary to make an emergency broadcast in each district instead of the central emergency broadcast, the fire prevention officer of the district picks up the emergency telephone handset installed at the site, such as lla, and As shown in Fig. 3, by switching the changeover switch 15 from the base unit side to the power amplifier 14 side and closing the pushbutton switch 1b, the relay C of the selection control section 13 is activated, and its contact point C is connected to the dotted line. A selection state is created in which an emergency broadcast can be made to the area from the transmitter of the emergency telephone handset 11.

Therefore, the fire prevention officer can directly view the situation at the scene and transmit appropriate instructions such as evacuation guidance through emergency broadcasts.

On the other hand, even if emergency broadcasts from the central monitoring room become impossible due to the spread of a fire, emergency broadcasts can be made independently in each area, reliably preventing unnecessary confusion from occurring.

Note that the selection control units 13a to 13n and power amplifiers 14a to 14n installed in each warning area used in the present invention are installed in a relay board for fire protection, smoke exhaust equipment, etc. installed as disaster prevention equipment. , and it is desirable to have a separate power source from the central monitoring room.

In addition, the signal line for control commands and monitoring of broadcasting equipment in each district on the central side can also be used as the signal line for fire alarm equipment or fire prevention/smoke exhaust equipment, etc., in order to reduce equipment costs. Can be done.

Furthermore, when emergency broadcasts are made to each district using emergency telephone handsets, emergency broadcasts from the center are interrupted, so in such a case, instructions are given to send the emergency broadcast from the emergency telephone main unit to the handsets. It is desirable that the contents of the central emergency broadcast be heard via the emergency telephone line, and that the fire prevention officer etc. make the district emergency broadcast.

As explained above, according to the present invention, in addition to the broadcasting device in the central monitoring room, emergency broadcasts can be made for each warning area by the switch operation of the emergency telephone handset. Because it can be performed directly from the container, in case of an emergency,
In addition to emergency broadcasts from the center, it is possible to instruct each district on evacuation guidance or fire extinguishing measures that are appropriate to the situation at the scene. However, since emergency broadcasts can be made for each warning area, the reliability of the broadcasting device can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a conventional emergency broadcasting equipment, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is an embodiment of an emergency broadcasting device for a restricted area used in the present invention. FIG. 4 is a block diagram showing an embodiment of the central broadcasting device used in the present invention. 1...Central monitoring room, 2...Microphone for general broadcasting, 3...Audio playback section, 3a...
Record cartridge, 3b... Tape head, 3c... Chime transmitter, 4... Emergency broadcast microphone, 5... Siren sound generator, 6
...Broadcast switching device, 6al6b...Selector switch, T...Amplifier (booster amplifier), 8...Broadcast selection control unit, 9... ...Speaker, 10...Emergency telephone main unit, 11,lla
～11n・・・Emergency phone handset, 12a～12n・
...District General Broadcasting Department, 13.13a-13n...
... Selection control section, f4a-14n... Power amplifier, 15, i5a-15n... Changeover switch, 16... Push button switch, 11...
... Preamplifier, 18 ... Selector switch, 1
9a-19n・・・District selection switch, A, B,
C...Relay a, b, c...Relay contacts.

Claims (1)

[Claims] 1 A central broadcasting device is installed in a central monitoring room such as a control center to make an emergency broadcast by selecting the entire area or a specific area of the alert area divided by floor, etc., and drives a speaker for each alert area. The power amplifier is connected to an emergency telephone handset that makes an emergency call between the emergency telephone main unit installed in the central monitoring room in the event of an emergency, and the power is transmitted from the emergency telephone main unit to the emergency telephone main unit by operating a switch on the emergency telephone handset. An emergency broadcasting device comprising: a selection control section that switches a telephone line to an amplifier side and performs an emergency broadcast directly to the area from the transmitter of the emergency telephone handset.