JPH07306988A - Sensor integrated with speaker - Google Patents

Abstract

PURPOSE:To save construction cost by integrating a sensor with a speaker and showing functions thereof through the common wiring. CONSTITUTION:When plural sensors 1 integrated with the speaker connected in parallel in a skewering state by electric wires 4 and 5 connected to a power source 9 detect a fire by heat or smoke, a contact 6 of the sensor 1 is closed. As the result, the closed circuit of the plus terminal of the power source 9, winding Ry of a relay 10, terminals (a) and (c) of a filter 11, electric wire 4, contact 6, electric wire 5, terminal (d) and (b) of the filter 11, and the minus terminal of the power source 9 is formed. When the DC current being a fire reporting signal is allowed to flow through the winding Ry of the relay 10, the contact C of the relay 10 is closed and an alarm display part 12 is operated and the fire is found by the alarm sound and lamp, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker-integrated sensor in which a fire sensor in a fire alarm facility in a building and a speaker in a broadcasting facility are integrated so as to share the same wiring.

[0002]

2. Description of the Related Art A building for accommodating a large number of people is equipped with a fire alarm system for detecting the occurrence of a fire and notifying the people in the building. In general, fire alarm equipment includes a large number of fire detectors installed in various parts of a building, a fire alarm signal receiver installed in a building management room, etc., and a large number of the detectors and fire alarm signal receivers. And a communication link that electrically connects them by wire or wirelessly.

Two example configurations of conventional fire alarm equipment are shown in FIG.
And shown in FIG. 4 and 5, the left side of the broken line indicates the fire alarm signal reception unit, and the right side indicates the row of the plurality of fire detectors arranged in the building.

FIG. 4 shows a fire alarm system having the simplest structure. The fire detector 31 is configured to close the electrical contact a when detecting high heat or high-density smoke, and only this contact is shown.

One of the terminals of the contacts of all the fire detectors 31 is commonly connected to the electric wire 32, and each of the other terminals is commonly connected to the electric wire 33. That is, all the fire detectors 31 are connected to the electric wires 32 and 33 which are parallel to each other.

The electric wires 32 and 33 are stretched together in the building, one end of each is connected to the output terminals 34 and 35 of the fire alarm signal receiving section, and a terminating resistor 36 is provided between the respective ends. It is connected. The termination resistor 36 is
Even when all of the fire detectors 31 are not operating, a weak current can be applied to check the breakage of the electric wires 32 and 33.

The fire alarm signal receiving section includes a relay 37, an alarm / display unit 38, and a DC power supply 39. The relay 37 has a contact C when a current flows through the winding Ry of the electromagnet.
Is supposed to close.

The output terminal 34 of the fire alarm signal receiving portion is connected to the plus terminal of the power source 39 via the winding Ry of the electromagnet of the relay 37, and the output terminal 35 is connected to the minus terminal of the power source 39. That is, all the sensors 31 are connected to the power source 39 via the winding Ry of the electromagnet of the relay 37.

The alarm / indicator 38 is activated when the contact C of the relay 37 is closed to generate an alarm sound or turn on a lamp.

With the above configuration, when any one (or more) of the plurality of sensors 31 is turned on at the time of fire, the contact a of the turned-on sensor 31 is closed, and as a result, this detection is performed. Device 31-electric wire 32-relay 37 electromagnet winding Ry-power supply 39-electric wire 33-a closed circuit of this sensor 31 is formed, and as a result, a current flows through the electromagnet winding Ry of relay 37 and contact C Closed, alarm / indicator 38
Will work.

The structure of the fire alarm system shown in FIG. 5 is often used in middle-high-rise buildings, and the components denoted by the same reference numerals as those in FIG. 4 are the same components.

The fire sensor in this case includes a contact sensor 40 and a bridge sensor 41. Contact sensor 4
0 is such that the contact 42 closes due to high heat or dense smoke. In addition, the bridge type sensor 41 is
It has a bridge circuit formed by the variable resistor 43, and high heat or high-concentration smoke breaks the balance of the bridge circuit so that a current flows.

Contact type sensor 40, bridge type sensor 41
Each has a repeater 44. This repeater 44
Is composed of a digital circuit, and has a function of inputting a current when a current flows through the contact 42 or the bridge circuit and sending out a pulse type fire alarm signal to the electric wires 32, 33. In addition, the relay 44 is provided with an address indicating each installation position from the fire notification signal reception unit, and this address is incorporated in the fire notification signal and transmitted.

Output terminals 34 and 35 of the fire alarm signal receiver
There are electric wires 32 and 33, which are all over the building.
Each end of is connected. The electric wire 32 is connected to the output terminal of the repeater 44 of each fire detector (40 or 41).

The electric wires 32 and 33 have two functions, that is, a function of supplying power to the repeater 44 and a function of transmitting a fire alarm signal from the relay 44 to the fire alarm signal receiving section. The power supply to the repeater 44 may be provided in another wiring.

On the other hand, the fire alarm signal receiver has a DC power source 39, a relay 37, and an alarm / indicator 38 as in the first example, and additionally has a transceiver 45.

The positive terminal and the negative terminal of the power source 39 are connected to the output terminals 34 and 35, respectively. The transmission / reception terminals S ₁ and S ₂ of the transceiver 45 are connected to the electric wires 32 and 33 via the output terminals 34 and 35, respectively. That is, the transceiver 45 is connected to the relay 44 of each fire detector (40 or 41) via the electric wires 32 and 33 and is in a state of being able to communicate with each other.

The receiver of the transceiver 45 is provided with control signal output terminals S ₃ and S ₄ , which are connected to both ends of the winding Ry of the electromagnet of the relay 37, respectively. Thus, when the fire alarm signal is received, the receiver of the transmitter / receiver 45 applies a current to the winding Ry of the electromagnet of the relay 37 to close the contact C, and as a result, operates the alarm / indicator 38. .

At this time, since the fire occurrence position and the like are known from the address contained in the fire alarm signal from the repeater 44, various variability can be given to the operation of the alarm / indicator 38. It has become.

The conventional fire alarm system has been described above. Generally, a building with a large number of people is equipped with a fire alarm system and a broadcast facility for the purpose of disaster prevention. As shown in FIG. 6, such broadcasting equipment includes a microphone 46, a voice synthesizer 47, and an amplifier 4 installed in a broadcasting room or the like in a building.
8 and the output controller 49, a plurality of electric wires 50 radially extended from the output controller 49 in the building, and a plurality of speakers 51 connected to the electric wires 50.
It consists of and.

The voice signal sent from the microphone 46 or the voice synthesizer 47 is amplified by the amplifier 48 and then sent to the input terminal of the output controller 49. The output controller 49 has a plurality of output terminals connected to the electric wires of the respective broadcasting systems. By connecting the input terminals and all the output terminals, simultaneous broadcasting to all the systems, or the input terminals and the respective output terminals are performed. By selectively connecting and, it is possible to broadcast only to a specific broadcasting system.

[0022]

As described above, the fire alarm equipment and the broadcasting equipment have conventionally been installed independently in the same building. However, the electric wire for the fire alarm equipment (electric wires 32 and 33 in FIGS. 4 and 5) and the electric wire for the broadcast equipment (electric wire 50 in FIG. 6) are wired through the same route in the building. However, since all of them reach a considerable length, there has been a demand for reducing wiring materials and construction costs by sharing these with both facilities.

Further, since the fire alarm equipment and the broadcasting equipment are mainly used when a disaster occurs, there has been a demand for being able to operate them in an integrated manner.

Therefore, in view of the above demands, the present invention has an object to share the wiring between the fire alarm equipment and the broadcasting equipment, and to operate them in an integrated manner. Therefore, a speaker and a fire detector are provided. There is a problem that must be solved by connecting the same to the same electric wire so that both can completely perform their respective functions and realize a system configuration that does not impair the functions of each other.

[0025]

In order to solve the above-mentioned problems, a speaker-integrated sensor according to the present invention receives a fire detector and a fire alarm signal output from the fire sensor, and outputs an alarm or a warning signal. A fire alarm system including a fire alarm signal receiving unit for displaying, a broadcast unit for outputting a broadcast signal, a speaker for generating a broadcast sound by the broadcast signal, and a wiring necessary for transmitting the fire alarm signal and the broadcast signal. A fire alarm signal output from the fire detector and a broadcast signal transmitted from the broadcasting unit to the speaker are integrated by integrating a pair of the fire detector and the speaker and connecting both to the same electric wire. It is configured to be transmitted through the same electric wire.

The broadcast signal is a modulated audio signal. The electric wire is a plurality of electric wires stretched around the building, and one end of the electric wire is connected to the fire alarm signal reception unit through a filter that allows the fire alarm signal to pass but does not pass the modulated audio signal. At the same time, it is connected to the transmitting / receiving means of the broadcasting unit.

The fire detector and the speaker are respectively connected between the plurality of electric wires. In addition, between the plurality of wires, in series with the speaker,
Connect a filter that blocks direct current.

In addition, a first repeater means for transmitting a pulse-type fire alarm signal when the fire detector operates is connected in series between the plurality of electric wires.
Further, a second repeater means for demodulating the modulated audio signal and supplying the demodulated audio signal to the speaker is connected in series with the speaker between the plurality of electric wires.

In order to integrate a pair of the fire detector and the speaker, both are attached to one panel, or
Mounted adjacent to the ceiling or wall of the building or together with the interior of the luminaire.

[0030]

Operation The speaker-integrated sensor having the above-described structure operates as follows. In the above fire alarm system,
Multiple electric wires are stretched all over the building, and a "speaker-integrated sensor" in which a pair of a fire sensor and a speaker is attached to a single panel etc. and integrated into one is a state in which multiple wires are intervened. Connected by.

Therefore, all the fire alarm signals sent from all the fire detectors to the fire alarm signal receiving section and the broadcast signals transmitted from the broadcasting section to all the speakers should flow through the same two electric wires. Has become. As a result, it is not necessary to provide separate wirings for the fire alarm equipment and the broadcasting equipment, and the construction cost is reduced.

The broadcast signal is a signal obtained by modulating a high frequency carrier wave with an audio signal, and propagates on the electric wire while being superimposed on DC.

A filter is provided at one end of the electric wire on the side of the fire alarm signal receiver. This filter allows the fire notification signal from the fire detector to pass to the fire notification signal receiving unit side, but prevents the broadcast signal from the broadcasting unit from passing to the fire notification signal receiving unit side. As a result, the influence of the broadcast signal on the side of the fire alarm signal reception unit is prevented.

The fire detector and the speaker are respectively connected between the plurality of electric wires. That is, the fire detector and the speaker are connected to each other in parallel to the plurality of electric wires. As a result, the fire alarm signal and the broadcast signal can share the electric wire and perform their own functions.

Further, since a filter for blocking direct current is connected in series with the speaker between the plurality of electric wires, the direct current power supplied from the fire alarm signal receiver to the detector is supplied to the speaker. I try not to affect it.

Further, by connecting a means for transmitting a pulse type fire alarm signal when the fire sensor operates in series between the plurality of electric wires, the type of the fire alarm signal can be changed. Can have width. For example, it is possible to specify the source of the fire alarm signal by including the address information in the fire alarm signal.

Further, by connecting a means for demodulating an audio signal modulated in series with a speaker and supplying the same to the speaker between the plurality of electric wires, an address is given to this means to transmit a broadcast signal. The flexibility of selecting the destination is increased.

In order to integrate the pair of the fire detector and the speaker, they are attached to one panel, adjacent to the ceiling plate or wall of the building, or attached together inside the lighting fixture. Various forms are possible.

[0039]

EXAMPLE A first example of a fire alarm system using a speaker-integrated sensor according to the present invention will be described below. In the present embodiment, as shown in FIG. 1, a plurality of speaker-integrated sensors 1 installed in various places in a building, a fire alarm signal reception unit 2 and a broadcast amplifier unit 3 installed in a building management room or the like. And a plurality of, for example, two electric wires 4 and 5, which are connected to a plurality of speaker-integrated sensors 1 via electric wires and are finally connected to the fire alarm signal reception unit 2 and the broadcasting amplifier unit 3. ing.

The speaker-integrated sensor 1 comprises a fire sensor 6, a speaker 7, a filter 8 and internal wiring. As shown in FIG. 2, the appearance of the speaker integrated sensor 1 is a panel 1A having an appropriate shape and size.
The fire detector 6 and the speaker 7 are attached to the
It has four terminals T ₁ , T ₂ , T ₃ , T ₄ . still,
The speaker-integrated sensor 1 may have a structure in which the power is supplied by separate wiring. In this case, it is necessary to separately provide a volume terminal and a power supply terminal.

Terminal T on one side of panel 1A₁, T₂Is
Forward by electric wires 4 and 5, respectively (fire alarm signal reception unit
2) The terminal T of the sensor with integrated speaker 1₃, T_FourWhen
It is connected. Inside each speaker integrated sensor 1
In addition, the terminal T₁And terminal T ₃Are connected by wires
4 forms a part of the terminal T₂And terminal T_FourIs an electric wire
Are connected to form a part of the electric wire 5.

The terminals T ₁ and T ₂ of the frontmost speaker-integrated sensor 1 are connected to the fire alarm signal receiver 2 and the broadcast amplifier 3. In this way, the plurality of speaker-integrated sensors 1 arranged in the building are connected to each other at one end via the electric wires 4 and 5 connected to the fire alarm signal receiver 2 and the broadcast amplifier 3. .

The fire detector 6 has a structure in which the contact point is closed when high heat or high-density smoke due to fire is detected. Only this contact point is shown in FIG. Both ends of this contact are connected to terminals T ₁ and T ₂ , respectively. Therefore, when the fire detector 6 operates and the contacts are closed, the terminals T ₁ and T ₂ are short-circuited, and a DC fire alarm signal is generated.

The speaker 7 and the filter 8 are connected in series between the terminals T ₃ and T ₄ . Filter 8 is (1)
The function of preventing the direct current supplied from the fire alarm signal reception unit 2 from flowing to the speaker 8, and (2) the broadcast amplifier unit 3
It has the function of demodulating the modulated audio signal sent from the device and supplying it to the speaker 7 to operate it.

In this way, the fire detector 6 and the speaker 7
By attaching and to one panel and integrating,
The fire detector 6 and the speaker 7 share the electric wires 4 and 5. The fire alarm signal reception unit 2 uses the DC power supply 9
, Electromagnet type relay 10, filter 11, alarm device /
And a display 12.

The relay 10 comprises an electromagnet winding Ry and a contact C, and the contact C is closed when a current flows through the electromagnet winding Ry. One end of the winding Ry of the electromagnet is connected to the positive terminal of the power source 9, and the other end is connected to the filter 11
Connected to the terminal a. The terminal b of the filter 11 is connected to the negative terminal of the power source 9. And
The terminals c and d of the filter 11 are connected to the electric wires 4 and 5, respectively.

The filter 11 is (1) a speaker-integrated sensor 1 which inputs to terminals c and d through electric wires 4 and 5.
It has the function of passing the DC fire alarm signal from the terminals a and b, and (2) preventing the modulated audio signal output from the broadcast amplifier section 3 from passing to the relay 10 side.

The alarm / indicator 12 comprises an alarm such as a buzzer and a bell, and an indicator such as a lamp.
When the contact C of the relay 10 is closed, the alarm device emits an alarm sound and the lamp is turned on.

The broadcast amplifier section 3 has a microphone 13, a voice synthesizer 14, a modulator 15, an amplifier 16 and an output controller 17.

The microphone 13 is used by the broadcaster when making a general broadcast or an emergency broadcast in case of a fire. Voice synthesizer 14
Automatically generates an emergency message or the like prepared in advance by voice synthesis. The modulator 15 is the microphone 13
Alternatively, it modulates the audio signal output from the audio synthesizer 14 and outputs the modulated audio signal to the amplifier 16.

The amplifier 16 amplifies the output of the modulator 15 and then outputs it to the output controller 17. The output terminals e and f of the output controller 17 are connected to the electric wires 4 and 5, respectively,
The modulated audio signal is transmitted to the speaker-integrated sensor 1 through the electric wires 4 and 5.

The filter 8 of the speaker-integrated sensor 1 operates the speaker 7 by demodulating the modulated audio signal and supplying it to the speaker 7. However, the modulated audio signal is blocked by the filter 11 and does not pass to the relay 10 side as described above.

The overall operation of this embodiment will be described below. When one or more of the plurality of speaker-integrated sensors 1 connected in parallel to each other in a skewered pattern by the electric wires 4 and 5 connected to the power source 9 detect a fire due to heat or smoke, the speaker-integrated type The contact 6 of the sensor 1 closes.

As a result, the positive terminal of the power source 9 → the relay 1
A closed circuit of the winding Ry of the electromagnet 0, the terminals a and c of the filter 11, the electric wire 4, the contact 6, the electric wire 5, the terminals d and b of the filter 11, and the negative terminal of the power source 9 is formed.

Therefore, a direct current, which is a fire alarm signal, flows through the winding Ry of the electromagnet of the relay 10, the contact C of the relay 10 is closed, and as a result, the alarm / indicator 12 operates, and an alarm sound, a lamp, etc. Will inform you of the discovery of a fire.

When broadcasting is performed by the microphone 13 or the voice synthesizer 14 in the broadcast amplifier section 3, the modulated voice signal is output from the output controller 17, and the electric wires 4, 5
To the filter 8 of each speaker-integrated sensor 1. The filter 8 demodulates this signal to restore the original audio signal, and supplies this to the speaker 7. This allows
Broadcast sound is output from the speaker 7.

In this case, the modulated audio signal output from the output controller 17 is blocked by the filter 11,
Since it does not pass to the relay 10 side, the alarm / indicator 12 is not operated.

The second embodiment of the fire alarm system using the speaker integrated sensor according to the present invention will be described below. In the present embodiment, as shown in FIG. 3, a plurality of speaker-integrated sensors 18, a fire alarm signal receiver 19,
It is composed of a broadcast amplifier section 20 and electric wires 4 and 5 which are connected to the fire alarm signal reception section 19 and the broadcast amplifier section 20 by finally connecting the plurality of speaker-integrated sensors 18 in a skewered shape.

In FIG. 2, blocks designated by the same reference numerals as in FIG. 1 represent the same parts.

The speaker-integrated sensor 18 includes a fire sensor 6 (only contacts are shown), a speaker 7, a fire alarm signal relay (referred to as a fire alarm relay) 21, and a broadcast signal relay (broadcast). 2, which is called a repeater, is attached to one panel as shown in FIG.

The fire alarm repeater 21 includes the fire alarm signal receiver 1
An address is given in advance by 9 in a manner to be described later and stored in a built-in register. Fire alarm repeater 21
When the fire detector 6 operates and the contact is closed, the fire alarm signal in pulse form including its own address is sent to the electric wire 4,
5 has a function of sending to 5.

The broadcast repeater 22 has (1) a function of preventing the direct current supplied from the fire alarm signal reception section 19 from passing through the speaker 7, and (2) its own address sent from the broadcast amplifier section 20. It has a function of demodulating an addressed or common modulated audio signal and supplying it to the speaker 7.

The fire alarm signal receiver 19 includes a power source 9, a relay 10, a filter 11, an alarm / display 12, and
It is composed of a transceiver 23.

The positive terminal of the power source 9 is connected to the terminal a of the filter 11 and one input / output terminal S _{1 of the} transceiver 23. The negative terminal of the power source 9 is connected to the terminal b of the filter 11 and the other input / output terminal S _{2 of the} transceiver 23.

Further, the control terminals S ₃ , S _{4 of the} transceiver 23 are
Are respectively connected to both ends of the winding Ry of the electromagnet of the relay 10. When the fire alarm signal is input to the input / output terminals S ₁ and S ₂ , the transceiver 23 causes a current to flow from the control terminals S ₃ and S ₄ to the winding Ry of the electromagnet. As a result, the contact C of the relay 10 is closed and the alarm / indicator 12 operates.

The terminals c and d of the filter 11 are connected to the electric wires 4 and 5, respectively. The filter 11 includes (1) the fire alarm repeater 2 that is input to the terminals c and d through the electric wires 4 and 5.
The function of transmitting the fire alarm signal from 1 to the terminals a and b, (2) the function of transmitting the address setting signal from the transceiver 23 to the fire alarm repeater 21 without any trouble, and (3) the transceiver 24 It has a function of allowing the output modulated audio signal to be transmitted to the broadcast repeater 22 without any trouble.

The transceiver 23 has a transmitter and a receiver. The receiver receives a pulsed fire alarm signal input from the fire alarm repeater 21 through the filter 11 and winds the electromagnet of the relay 10. It has the function of passing a direct current through the line Ry,
The transmission unit has a function of setting the address of the fire alarm repeater 21 of each speaker-integrated sensor 18 in a procedure described later.

The broadcast amplifier section 20 is composed of a microphone 13, a voice synthesizer 14, a modulator 15, an amplifier 16 and a transceiver 24. The voice signal modulated by the voice signal output from the microphone 13 or the voice synthesizer 14 is amplified by the amplifier 16 and then input to the transmitter of the transceiver 24.

The transceiver 24 has a transmitter and a receiver. The transmitter (1) has a function of transmitting the modulated audio signal output from the amplifier 16 to the electric wires 4 and 5, and (2) )
A function to set an address for the broadcast repeater 22,
(3) It has a function of selectively transmitting a broadcast signal to the broadcast repeater 22 having a specific address.

The receiver of the transceiver 24 is the repeater 2
When the pulse-shaped fire alarm signal from 1 is received, the transmitter is made operable and a control signal is sent to the voice synthesizer 14 to broadcast a predetermined message.

The operation of this embodiment will be described below. (1) Setting of Address of Repeater 21 The address of the repeater 21 is set by the transceiver 23 as follows. The transmitter of the transceiver 23 sends a code representing the address number to the wires 4 and 5.

Then, the fire alarm repeater 21 of the speaker-integrated sensor 18 closest to the fire alarm signal receiver 19 sets the address number in its own register and sends an address setting completion signal to give priority. Insist. This address setting completion signal is received by the transmitter / receiver 23 and the fire alarm repeater 21 of the other speaker-integrated sensor 18. Therefore, other speaker-integrated sensor 18 cannot use this address number.

When the transceiver 23 receives the address setting completion signal, it sends the next address number. This address number is set in the register of the repeater 21 of the next speaker integrated sensor 18 in the same manner as described above. In the same manner, the unique address numbers are set in the registers of the fire alarm repeater 21 of the all-speaker integrated sensor 18.

(2) Setting of Address Number of Repeater 22 The address of the broadcast repeater 22 of each speaker-integrated sensor 18 is set by the transmitter / receiver 24 of the broadcast amplifier section 20 in the same procedure as in (1) above. Done.

(3) Transmission of fire alarm signal When one or more of the plurality of speaker-integrated sensors 18 connected in parallel with each other by electric wires 4 and 5 in a skewered pattern detect a fire due to heat or smoke. The contact of the fire sensor 6 of the speaker-integrated sensor 1 is closed.

As a result, the fire alarm repeater 21 generates a pulse-type fire alarm signal, which is the electric wire 4 → filter 11
Terminal c → filter 11 terminal a → transceiver 23 terminal S ₁ → transceiver 23 → transceiver 23 terminal S ₂ → filter terminal b → filter 11 terminal d → wire 5 → contact 6 →
It is sent to the receiving section of the transceiver 23 through the closed circuit in the order of the fire alarm repeater 21.

When the receiver of the transceiver 23 receives the fire alarm signal, it generates a voltage between the terminals S ₃ and S ₄ , and as a result, a current flows through the winding Ry of the electromagnet of the relay 10.
Therefore, the contact C of the relay 10 is closed and the alarm / indicator 1
2 will be activated and will notify the discovery of a fire.

(4) General broadcasting In the case of general broadcasting, when broadcasting is performed by the microphone 13 or the voice synthesizer 14 in the broadcasting amplifier section 20, the audio signal modulated by this audio signal is amplified by the amplifier 16 and transmitted / received. Machine 24 transmitter. This transmitter outputs the modulated audio signal to the electric wires 4 and 5.

In this case, the transmitter of the transmitter / receiver 24 incorporates the address number of the specific broadcast repeater 22 into the broadcast signal and transmits it, if necessary.

The output signal of the transceiver 24 is input to the broadcast repeater 22 of each speaker-integrated sensor 18 through the wires 4 and 5. The repeater 22 is an all-speaker-integrated sensor 1
The signal for 8 or for itself is identified, demodulated and restored to the original audio signal, and this is supplied to the speaker 7. As a result, the broadcast sound is output from the speaker 7.

In this case, since the output signal from the transmitter / receiver 24 is blocked by the filter 11 and does not pass to the transmitter / receiver 23, the alarm / display 12 is not operated.

(5) Broadcast corresponding to fire alarm signal When the receiver of the transmitter / receiver 24 receives the fire alarm signal from the fire alarm repeater 21, it sends a control signal to the transmitter to enable transmission. At the same time, it sends a control signal to the voice synthesizer 14 to operate it. Other than that, it is similar to the case of general broadcasting.

The third embodiment, which is a modification of the second embodiment, will be described below. In the second embodiment, the transceiver 23 and the transceiver 24 are unrelated, but in the present embodiment, the receiving section of the transceiver 23 and the transceiver 24 are independent.
And the voice synthesizer 14 are connected by a control line.

When the fire alarm signal is received, the receiver of the transceiver 23 sends a control signal to the transmitter of the transceiver 24 and the voice synthesizer 14 via the control line to operate them. Instead, the receiver of the transceiver 24 does not have the function of receiving the fire alarm signal.

As another embodiment, the speaker-integrated sensor 1 and the speaker-integrated sensor 18 in each of the above embodiments are integrated by attaching the fire sensor 6 and the speaker 7 to the panel. The mounting method is not limited, and the speaker and the sensor may be directly mounted on the plate of the ceiling equipment of the building, or both may be mounted inside a specific lighting fixture.
In any case, the sensor 6 and the speaker 7 should be able to exert their functions through common wiring.

[0086]

As described above, the speaker-integrated sensor according to the present invention is configured such that the speaker and the sensor are integrated and both perform their functions through common wiring. Produce an effect.

(1) The construction cost of fire alarm equipment and broadcasting equipment can be saved. (2) Control of fire notification and broadcasting can be unified, which can save building management costs. (3) By using the voice signal repeater, an expensive output controller is not necessary, and the cost of the fire alarm system as a whole is reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment of a fire alarm system using a sensor with a built-in speaker according to the present invention.

FIG. 2 is an explanatory diagram showing an appearance of a speaker-integrated sensor according to the present invention.

FIG. 3 is a block diagram showing a second embodiment of a fire alarm system using a speaker-integrated sensor according to the present invention.

FIG. 4 is an explanatory diagram showing a conventional technique.

FIG. 5 is an explanatory diagram showing a conventional technique.

FIG. 6 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

1, 18 Speaker integrated sensor 1A Panel 2, 19 Fire alarm signal receiver 3, 20 Broadcast amplifier 4, 5, Electric wire 6 Fire detector 7 Speaker 8 Filter 9 Power supply 10 Relay 11 Filter 12 Alarm / display 13 Microphone 14 voice synthesizer 15 modulator 16 amplifier 17 output controller 21 fire alarm repeater 22 broadcast repeater 23, 24 transceiver 31 fire detector 32, 33 wire 34, 35 terminal 36 terminal resistor 37 relay 38 alarm / display Device 39 Power supply 40, 41 Sensor 42 Contact 43 Bridge 44 Repeater 45 Transceiver 46 Microphone 47 Voice synthesizer 48 Amplifier 49 Output controller 50 Electric wire 51 Speaker Ry Relay electromagnet winding C Relay contact T ₁ , T ₂ , T ₃ , T ₄ Speaker integrated sensor terminals

Claims (10)

[Claims] 1. A fire detector, a fire notification signal receiving unit that receives a fire notification signal output from the fire detector and issues an alarm or display, a broadcasting unit that outputs a broadcasting signal, and a broadcasting signal by the broadcasting signal. A fire alarm system comprising a speaker for generating broadcast sound and wiring necessary for transmitting the fire alarm signal and the broadcast signal, wherein a pair of the fire sensor and the speaker are integrated and connected to the same electric wire. However, the fire alarm signal output from the fire detector and the broadcast signal transmitted from the broadcast unit to the speaker are configured to be transmitted through the same electric wire. . 2. The speaker-integrated sensor according to claim 1, wherein the broadcast signal is a modulated audio signal. 3. The electric wire is a plurality of electric wires stretched around a building, and one end of the electric wire is provided with a filter that allows the fire alarm signal to pass but does not pass the modulated audio signal. The speaker-integrated sensor according to claim 1 or 2, wherein the sensor is connected to a signal receiving unit and is also connected to a transmitting / receiving unit of the broadcasting unit. 4. The speaker integrated sensor according to claim 3, wherein the fire sensor and the speaker are respectively connected between the plurality of electric wires. 5. The speaker integrated sensor according to claim 4, wherein a filter for blocking direct current is connected in series with the speaker between the plurality of electric wires. 6. A means for transmitting a pulse-type fire alarm signal when the fire detector is operated is connected in series between the plurality of electric wires with the fire detector. Or the sensor with a built-in speaker according to the item 5. 7. A means for demodulating the modulated audio signal and supplying it to the speaker is connected in series with the speaker between the plurality of electric wires. Speaker integrated sensor described in. 8. The speaker integrated sensor according to claim 1, wherein the pair of the fire sensor and the speaker is attached to and integrated with one panel. 9. The speaker integrated sensor according to claim 1, wherein the pair of the fire sensor and the speaker are installed adjacent to each other on a ceiling plate or a wall surface of a building. 10. The speaker-integrated sensor according to claim 1, wherein the pair of the fire sensor and the speaker is installed inside a lighting fixture in a building.