JP3214976B2 - Speaker integrated sensor - Google Patents

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 detector in a fire alarm system in a building and a speaker in a broadcasting system are integrated to share the same wiring.

[0002]

2. Description of the Related Art In a building accommodating a large number of people, a fire alarm system for detecting the occurrence of a fire and notifying the people in the building is provided. Generally, a fire alarm system includes a number of fire detectors arranged in various places in a building, a fire alarm signal receiving unit installed in a management room of the building, and the above-described many detectors and a fire alarm signal receiving unit. And a communication link for electrically connecting the devices by wire or wirelessly.

FIG. 4 shows two examples of a conventional fire alarm system.
And FIG. 4 and 5, the left side of the broken line indicates a fire alarm signal receiving unit, and the right side indicates a row of a plurality of fire sensors arranged in a building.

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

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

[0006] The electric wires 32 and 33 are stretched together in the building, and 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 terminating resistor 36 is
Even when all the fire detectors 31 are not operating, a weak current can be supplied to check for breaks in the electric wires 32 and 33.

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

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

The alarm / indicator 38 operates when the contact C of the relay 37 is closed, and generates an alarm sound or turns on a lamp.

According to the above configuration, when one (or a plurality of) of the plurality of sensors 31 is turned on at the time of a fire, the contact a of the turned on sensor 31 is closed, and as a result, this sensor 31 The closed circuit of the sensor 31 is formed, and as a result, a current flows through the winding Ry of the electromagnet of the relay 37 and the contact C Is closed and the alarm / indicator 38
Will work.

The configuration of the fire alarm system shown in FIG. 5 is often used for a middle-to-high-rise building, and the components denoted by the same reference numerals as those in FIG. 4 indicate the same components.

In this case, the fire detector includes a contact type sensor 40 and a bridge type sensor 41. Contact type detector 4
0 is such that the contact 42 closes due to high heat or dense smoke. Further, the bridge type sensor 41 is
There is a bridge circuit formed by the variable resistor 43, and high heat or highly concentrated smoke causes the balance of the bridge circuit to be broken and a current to flow.

Contact type sensor 40, bridge type sensor 41
Have a repeater 44. This repeater 44
Is constituted by a digital circuit, and has a function of, when a current flows through the contact 42 or the bridge circuit, inputting this current and transmitting a fire alarm signal in the form of a pulse to the electric wires 32, 33. The repeater 44 is provided with an address indicating the installation position from the fire notification signal receiving unit, and incorporates this address into the fire notification signal for transmission.

Output terminals 34, 35 of the fire alarm signal receiving section
Have electric wires 32 and 33 stretched inside the building, respectively.
Are connected at one end. 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 of a function of supplying power to the repeater 44 and a function of transmitting a fire notification signal from the repeater 44 to a fire notification signal receiving unit. The power supply to the repeater 44 may be separately wired.

On the other hand, the fire alarm signal receiving section has a DC power supply 39, a relay 37, an alarm / display 38 and a transceiver 45 as in the first embodiment.

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

The receiving section of the transceiver 45 is provided with control signal output terminals S ₃ and S _{4, which} are respectively connected to both ends of the winding Ry of the electromagnet of the relay 37. Thus, when the receiving section of the transceiver 45 receives the fire notification signal, it supplies a current to the winding Ry of the electromagnet of the relay 37 to close the contact C, and as a result, activates the alarm / display 38. .

At this time, since the fire occurrence position and the like are determined from the address included in the fire notification signal from the repeater 44, the operation of the alarm / display 38 can have various variabilities. It has become.

Although the conventional fire alarm system has been described above, a building with a large number of people is generally provided with a fire alarm system as well as a broadcast system for 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 an output controller 49, a plurality of electric wires 50 laid radially in the building from the output controller 49, and a plurality of speakers 51 connected to each electric wire 50.
It is composed of

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

[0022]

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

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

Therefore, in view of the above-mentioned demands, the present invention aims to share the wiring between the fire alarm system and the broadcasting system and to operate them in an integrated manner. Are connected to the same electric wire so that both perform their functions completely, and have a problem that must be solved in order to realize a system configuration that does not impair the functions.

[0025]

In order to solve the above-mentioned problems, a speaker-integrated sensor according to the present invention is provided with a fire detector and a fire alarm signal output from the fire detector to receive an alarm or an alarm. In a fire alarm system including a fire alarm signal receiving section for displaying, a broadcast section for outputting a broadcast signal, a speaker for generating a broadcast sound by the broadcast signal, and wiring required for transmitting the fire alarm signal and the broadcast signal. A pair of the fire detector and the speaker is integrated, and both are connected to the same electric wire, and a fire notification signal output from the fire detector and a broadcast signal transmitted from the broadcast unit to the speaker are output. 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 in a building, and one end of the electric wire is connected to the fire alarm signal receiving unit via a filter that allows a fire alarm signal to pass but does not pass a 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. Also, between the plurality of wires, in series with the speaker,
Connect a filter that blocks direct current.

A first repeater means for transmitting a pulse-type fire notification signal when the fire detector operates is connected in series with the fire detector 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.

To integrate a pair of the fire detector and the speaker, either attach them to one panel or
Mount adjacent to the ceiling or wall of the building or together inside the luminaire.

[0030]

Operation The speaker-integrated sensor having the above configuration operates as follows. In the above fire alarm system,
Multiple wires are laid around the building, and the "speaker-integrated sensor", which integrates a pair of fire detector and speaker by attaching it to a single panel, etc., passes through multiple wires. Connected by

Therefore, the fire alarm signal transmitted from all the fire detectors to the fire alarm signal receiving unit and the broadcast signal transmitted from the broadcasting unit to all the speakers are caused to flow through the same two electric wires. Has become. As a result, it is not necessary to provide separate wires for the fire alarm equipment and the broadcast 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 a direct current.

A filter is provided at one end of the electric wire on the side of the fire alarm signal receiving section. This filter allows the fire alarm signal from the fire detector to pass to the fire alarm signal receiving unit, but prevents the broadcast signal from the broadcasting unit from passing to the fire alarm signal receiving unit. This prevents the broadcast signal from affecting the fire alarm signal receiving unit.

Further, 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 in parallel to each other with respect to the plurality of electric wires. This makes it possible for the fire alarm signal and the broadcast signal to perform their own functions by sharing the electric wire.

Further, by connecting a filter for blocking direct current in series with the speaker between a plurality of electric wires, direct current power supplied from the fire alarm signal receiving unit to the detector is supplied to the speaker. Try not to affect.

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

Further, a means for demodulating an audio signal modulated in series with a speaker and supplying the signal to the speaker is connected between the plurality of electric wires, and an address is assigned to the means to transmit a broadcast signal. Flexibility, such as selecting a destination, is increased.

In order to integrate a pair of a fire detector and a speaker, the two can be mounted on a single panel, mounted adjacent to a ceiling or wall of a building, or mounted together inside a lighting fixture. Various forms are conceivable.

[0039]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of a fire alarm system using a speaker-integrated sensor according to the present invention will be described. In this embodiment, as shown in FIG. 1, a plurality of speaker-integrated sensors 1 installed in various places in a building, a fire alarm signal receiving unit 2 and a broadcast amplifier unit 3 installed in a management room of the building and the like. And a plurality of, for example, two wires 4, 5 connected to a plurality of speaker-integrated sensors 1 via electric wires and finally connected to the fire alarm signal receiving unit 2 and the broadcast amplifier unit 3. ing.

The speaker-integrated sensor 1 comprises a fire detector 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.
With a fire detector 6 and a speaker 7 attached to it.
It has four terminals T ₁ , T ₂ , T ₃ , T ₄ . still,
The power supply of the speaker-integrated sensor 1 may be supplied by a 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, T_TwoIs
Forward by the electric wires 4 and 5 (fire alarm signal receiving section
2) Terminal T of sensor 1 with integrated speaker_Three, T_FourWhen
It is connected. Inside each speaker integrated sensor 1
The terminal T₁And terminal T _ThreeAre connected by electric wires
4 and a terminal T_TwoAnd terminal T_FourWhat is an electric wire
And form a part of the electric wire 5.

The terminals T ₁ and T ₂ of the foremost speaker-integrated sensor 1 are connected to the fire alarm signal receiving unit 2 and the broadcast amplifier unit 3. As described above, the plurality of speaker-integrated sensors 1 arranged in the building are connected at one end through the electric wires 4 and 5 connected to the fire alarm signal receiving unit 2 and the broadcast amplifier unit 3. .

The fire detector 6 has a structure in which it closes the contact when it detects high heat or high density smoke due to a fire. FIG. 1 shows only this contact. 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 notification 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)
A function of preventing the direct current supplied from the fire alarm signal receiving unit 2 from flowing to the speaker 8, and (2) a broadcast amplifier unit 3.
And demodulates the modulated audio signal sent from the speaker 7 and supplies it to the speaker 7 to operate it.

As described above, the fire detector 6 and the speaker 7
By attaching to one panel and integrating
The electric wires 4 and 5 are shared by the fire detector 6 and the speaker 7. The fire alarm signal receiving unit 2 includes a DC power supply 9
, An electromagnet type relay 10, a filter 11, an alarm /
A display 12.

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

The filter 11 comprises: (1) a speaker-integrated sensor 1 input to terminals c and d through electric wires 4 and 5;
And (2) a function to prevent the modulated audio signal output from the broadcast amplifier unit 3 from passing to the relay 10 side.

The alarm / display 12 includes an alarm that generates a sound such as a buzzer and a bell, and a display such as a lamp.
When the contact C of the relay 10 is closed, the alarm 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 when a broadcaster performs a general broadcast or an emergency broadcast in a fire. Voice synthesizer 14
Automatically generates an emergency message or the like prepared in advance by voice synthesis. The modulator 15 is connected to the microphone 13
Alternatively, the audio signal is modulated by the audio signal output from the audio synthesizer 14, and the modulated audio signal is output to the amplifier 16.

The amplifier 16 amplifies the output of the modulator 15 and outputs it to the output controller 17. Output terminals e and f of the output controller 17 are connected to 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 as described above, and does not pass through to the relay 10 side.

Hereinafter, the overall operation of this embodiment will be described. When one or more of the plurality of speaker-integrated sensors 1 connected in parallel in a skewered manner by the electric wires 4 and 5 connected to the power supply 9 detects a fire due to heat or smoke, the speaker-integrated sensor 1 Contact 6 of sensor 1 closes.

As a result, the positive terminal of the power supply 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 → the negative terminal of the power supply 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, and the contact C of the relay 10 closes. As a result, the alarm / display 12 operates, and an alarm sound, a lamp, etc. Will inform you of the discovery of the fire.

When the broadcast is performed by the microphone 13 or the voice synthesizer 14 in the broadcast amplifier 3, the modulated voice signal is output from the output controller 17, and the electric wires 4, 5
To the filter 8 of each sensor 1 with integrated speaker. The filter 8 demodulates this signal to return to 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 the signal does not pass to the relay 10, the alarm / display 12 is not operated.

Hereinafter, a second embodiment of a fire alarm system using a speaker-integrated sensor according to the present invention will be described. In the present embodiment, as shown in FIG. 3, a plurality of speaker-integrated sensors 18, a fire alarm signal receiving unit 19,
It comprises a broadcast amplifier unit 20 and electric wires 4 and 5 connected to the fire alarm signal receiving unit 19 and the broadcast amplifier unit 20 by connecting the plurality of speaker-integrated sensors 18 in a skewered manner.

In FIG. 2, blocks denoted by the same reference numerals as those in FIG. 1 represent the same blocks.

The speaker-integrated sensor 18 includes a fire detector 6 (only contacts are shown), a speaker 7, a fire alarm signal repeater (referred to as a fire alarm repeater) 21, and a broadcast signal repeater (broadcast). As shown in FIG. 2, a relay 22) is mounted on a single panel to form an integral unit.

The fire alarm repeater 21 is provided with the fire alarm signal receiving unit 1
9, an address is given in advance in a manner described later and stored in a built-in register. Fire report relay 21
When the fire detector 6 is operated and its contacts are closed, a fire alarm signal in the form of a pulse including its own address is sent to the electric wire 4,
5 is provided.

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

The fire alarm signal receiving section 19 includes a power supply 9, a relay 10, a filter 11, an alarm / display 12,
And a transceiver 23.

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

The control terminals S ₃ and S _{4 of the} transceiver 23
Are connected to both ends of the winding Ry of the electromagnet of the relay 10, respectively. When a fire alarm signal is input to the input / output terminals S ₁ and S ₂ , the transceiver 23 allows 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 closes, and the alarm / display 12 operates.

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

The transceiver 23 has a transmitting unit and a receiving unit. The receiving unit receives a pulse-like fire alarm signal input from the fire alarm repeater 21 through the filter 11 and turns the electromagnet of the relay 10. 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 of the speaker-integrated sensors 18 in a procedure described later.

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

The transceiver 24 has a transmitting unit and a receiving unit. The transmitting unit (1) has a function of transmitting the modulated audio signal output from the amplifier 16 to the electric wires 4 and 5; )
A function of setting an address for the broadcast repeater 22;
(3) a function of selectively transmitting a broadcast signal to the broadcast relay 22 having a specific address.

The receiving unit of the transceiver 24 is
When the pulse-like fire notification signal from 1 is received, the transmission unit is made operable and a control signal is sent to the voice synthesizer 14 to broadcast a predetermined message.

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

Then, the fire alarm repeater 21 of the speaker-integrated sensor 18 closest to the fire alarm signal receiving section 19 sets the address number in its own register, sends out the address setting completion signal, and gives priority to the priority. Insist. The address setting completion signal is received by the transceiver 23 and the fire alarm repeater 21 of the other speaker-integrated sensor 18. Therefore, the other speaker-integrated sensor 18 cannot use this address number.

Upon receiving the address setting completion signal, the transceiver 23 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. Hereinafter, similarly, unique address numbers are set in the registers of the fire alarm repeater 21 of the all-speaker integrated sensor 18 respectively.

(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 transceiver 24 of the broadcast amplifier unit 20 in the same procedure as in the above (1). Done.

(3) Transmission of Fire Notification Signal When one or more of the plural speaker-integrated sensors 18 connected in parallel in a skewered manner by the electric wires 4 and 5 detect a fire by heat or smoke. The contact of the fire detector 6 of the speaker-integrated detector 1 is closed.

As a result, a fire alarm signal in the form of a pulse is generated from the fire alarm relay 21, and this signal is transmitted from the electric wire 4 to the filter 11.
Terminal c → terminal a of filter 11 → terminal S _{1 of} transceiver 23 → transceiver 23 → terminal S ₂ of transceiver 23 → terminal b of filter → terminal d of filter 11 → wire 5 → contact 6 →
The signal is sent to the receiver of the transceiver 23 through the closed circuit in the order of the fire alarm repeater 21.

Upon receiving the fire notification signal, the receiving section of the transceiver 23 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 / display 1
2 will be activated and will report a fire finding.

(4) General Broadcasting In the case of general broadcasting, when broadcasting is performed by the microphone 13 or the voice synthesizer 14 in the broadcast amplifier section 20, the voice signal modulated by the voice signal is amplified by the amplifier 16 and transmitted and received. To the transmitter of the machine 24. This transmitter outputs the modulated audio signal to 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, if necessary, and transmits the broadcast signal.

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

In this case, the output signal from the transceiver 24 is blocked by the filter 11 and does not pass through the transceiver 23, so that the alarm / display 12 is not operated.

(5) Broadcasting Corresponding to Fire Notification Signal When the receiving unit of the transceiver 24 receives the fire notification signal from the fire relay 21, it sends a control signal to the transmitting unit to enable transmission. At the same time, it sends a control signal to the voice synthesizer 14 to operate it. The rest is the same as in the case of general broadcasting.

Hereinafter, a third embodiment as a modification of the second embodiment will be described. In the second embodiment, the transceiver 23 and the transceiver 24 are irrelevant. However, in the present embodiment, the receiving unit of the transceiver 23 and the transceiver 24 are different.
And the voice synthesizer 14 are connected by a control line.

When the receiving section of the transceiver 23 receives the fire notification signal, it sends a control signal to the transmitting section of the transceiver 24 and the voice synthesizer 14 via a control line to operate them. Instead, the receiving unit of the transceiver 24 does not have a function of receiving a fire notification signal.

As another embodiment, in each of the above embodiments, the speaker-integrated sensor 1 and the speaker-integrated sensor 18 are integrated by attaching the fire detector 6 and the speaker 7 to a 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 function is to allow the sensor 6 and the speaker 7 to perform 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. It works.

(1) Construction costs for fire alarm and broadcasting equipment are reduced. (2) Control of fire alarm and broadcasting can be unified, thereby reducing building management costs. (3) By using the audio signal repeater, an expensive output controller becomes unnecessary, and the cost of the entire fire alarm system is reduced.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram showing the 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 the 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 receiving unit 3, 20 Broadcast amplifier unit 4, 5 Electric wire 6 Fire detector 7 Speaker 8 Filter 9 Power supply 10 Relay 11 Filter 12 Alarm / display 13 Microphone Reference Signs List 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 electric wire 34, 35 terminal 36 terminal resistor 37 relay 38 alarm / display vessel 39 power 40, 41 sensor 42 contacts 43 bridge 44 repeater 45 transceiver 46 microphone 47 the voice synthesizer 48 amplifier 49 output controller 50 the wire 51 speakers Ry contacts T ₁ of the winding C relay relay electromagnet, T ₂ , T ₃ , T ₄ Speaker integrated sensor terminal

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G08B 17/00 G08B 3/10

Claims (10)

(57) [Claims] 1. A fire detector, a fire notification signal receiving unit that receives a fire notification signal output from the fire detector and performs an alarm or a display, a broadcast unit that outputs a broadcast signal, and a broadcast unit that outputs a broadcast signal. In a fire alarm system comprising a speaker for generating broadcast sound and wiring required for transmitting the fire alarm signal and the broadcast signal, a pair of the fire detector and the speaker are integrated and both are connected to the same electric wire. The fire alarm signal output from the fire detector and the broadcast signal transmitted from the broadcast unit to the speaker are transmitted through the same electric wire, and the speaker-integrated sensor is provided. . 2. The sensor according to claim 1, wherein the broadcast signal is a modulated audio signal. 3. The fire alarm system according to claim 1, wherein the electric wire is a plurality of electric wires stretched in a building, and one end of the electric wire is passed through a filter that passes the fire alarm signal 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 connected to a transmitting / receiving unit of the broadcasting unit. 4. The speaker-integrated sensor according to claim 3, wherein the fire detector and the speaker are respectively connected between the plurality of electric wires. 5. The sensor integrated with a speaker 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 notification signal when the fire detector operates in series with the fire detector between the plurality of electric wires. Or the speaker integrated sensor according to 5. 7. The speaker according to claim 4, wherein a 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. A sensor integrated with a speaker according to the above. 8. The speaker-integrated sensor according to claim 1, wherein the pair of the fire detector and the speaker are attached to one panel and integrated. 9. The speaker-integrated sensor according to claim 1, wherein the pair of the fire detector and the speaker are installed adjacent to 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 detector and the speaker are installed inside a lighting fixture in a building.