JPH10143776A - Fire alarming system for apartment and repeater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent warning alarm to surrounding residence when a fire sensor issues a false report, and to exactly monitor fire even when a power source is disconnected at a residence side. SOLUTION: A receiver 3a for residence receives an operating signal E1 from a repeater 2a, and activates a timer, and when time-up is generated, and when power supply to the receiver 3a for residence is stopped, a present voltage signal E3 is interrupted, and fire establishment is reported to the repeater 2a. The repeater 2a detects the interruption of the present voltage signal E3 from the receiver 3a for residence, and outputs a fire establishment signal E4 to a receiver 1 for an apartment. At the time of detecting the interruption of the present voltage signal E3 due to power failure, the fire establishment signal is immediately outputted to the receiver 1 for an apartment, and fire alarming is operated by the receiver for an apartment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a fire detector, a repeater, a receiver for dwelling units, and an intercom system for each dwelling unit to individually monitor the dwelling units, and a receiver for a dwelling unit is provided in a central management room or the like. And a fire alarm system for apartment houses for centralized monitoring.

[0002]

2. Description of the Related Art In a conventional fire alarm system for an apartment house, when a fire detector provided in a dwelling unit issues an alarm,
An alarm is issued by a housing information panel (receiver for dwelling unit) or a door phone installed in the dwelling unit. At the same time, an alarm signal is immediately sent via a house information panel and a door phone to a receiver for a residential building which is centrally monitored for disaster prevention information installed in the center of a manager's office or the like.
Upon receiving the alarm signal, the receiver for a living ridge sounds a fire by, for example, sounding a district bell installed on the fire floor and the floor immediately above.

In recent years, a voice alarm system has been required in place of the district bell. For example, in the system disclosed in Japanese Patent Application Laid-Open No. 4-350800, when a fire occurs, a warning is issued to a fire floor and a floor directly above by controlling the transmission of a warning transfer signal from a receiver for a living premises installed in a manager's room or the like. For dwelling units that need to be notified, switch the speaker of the door phone handset installed at the entrance to the signal line for audio alarm from the receiver for the dwelling building, and sound an alarm such as "Woo, a fire has occurred." Has been issued.

[0004] At the same time, the receiver for a living building also sends an alarm transfer signal to a house information panel installed in each dwelling unit that requires an alarm notification, and also performs an alarm notification in the dwelling unit.

[0005]

However, in such a conventional fire alarm system for a condominium, an ordinary house information panel operates with the power supply of each dwelling unit.
In a system in which a fire detector is connected to the house information panel and operates by being supplied with power, the house information panel and the fire may be activated if the dwelling unit is turned off because the dwelling unit is empty. There was a problem that the detector could not receive power supply and the fire in the dwelling unit could not be monitored at all.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem, and provides a fire alarm system for an apartment house that can reliably monitor a fire even when the power is turned off at the dwelling unit. The purpose is to:

[0007]

In order to achieve this object, the present invention is configured as follows. First, the present invention provides a self-healing fire detector that outputs an alarm signal to each dwelling unit only while detecting a fire, a relay that connects the fire detector via a detector line, and a relay. At least a dwelling unit receiver that operates upon receiving power supply from dwelling units while receiving an operation signal output when a fire detector alarm is received is provided, and relays it to the center of the management room etc. Apartment house with a receiver for the living building that receives a fire confirmation signal from the unit and issues a fire alarm, and connects the fire detector and repeater of each dwelling unit to operate by power supply from the receiver for the housing building For fire alarm systems.

According to the present invention, such a fire alarm system for a condominium is to output a voltage signal to a repeater at normal times to a receiver for a dwelling unit of each dwelling unit and receive an operation signal from the repeater. In this case, a receiver circuit section for interrupting a voltage signal is provided in each of a case where a timer is activated and time is up and a case where power supply to a dwelling unit receiver is stopped. In addition, when receiving a fire detector alarm, the repeater outputs an activation signal to the dwelling unit receiver if a voltage signal from the dwelling unit receiver is detected, and then outputs the activation signal to the dwelling unit receiver. When the interruption of the voltage signal from the receiver is detected, a fire confirmation signal is output to the receiver for the dwelling unit, and when the fire detector is notified, the voltage signal from the receiver for the dwelling unit is output. If a cut-off is detected, a repeater circuit section is provided to immediately output a fire determination signal to the receiver for the living building and perform a fire alarm with the receiver for the living building.

As described above, the fire alarm system for a condominium according to the present invention uses a voltage signal as a signal for notifying a fire from a dwelling unit receiver to a repeater, and detects the interruption of the voltage signal with the repeater. If the fire alarm is received even when the voltage signal is cut off due to a power outage of the dwelling unit receiver, it is determined that the fire has been transferred from the dwelling unit receiver. Immediately, a fire confirmation signal is output to the receiver for the living building and a fire alarm can be issued by the receiver for the living building, and even if there is a power outage at the dwelling unit, direct monitoring by the receiver for the living building is possible. High reliability is obtained.

When the operation of the fire check switch is detected while the timer for which the time is set for about 2 to 5 minutes is activated, the receiver circuit of the receiver for the dwelling unit immediately relays the signal regardless of the timer setting time. The fired signal is output to the living building receiver by shutting off the voltage signal output to the vessel. That is, the fire confirmation output is delayed by the timer for fire confirmation. If the fire confirmation switch is operated by the occupant during the delay, the output of the fire confirmation signal is prioritized.

When the operation of the recovery switch is detected while the timer is running, the receiver circuit of the dwelling unit receiver performs a recovery process on condition that no operation signal is received from the repeater. For this reason, even if a fire alarm is issued by the dwelling unit receiver due to a false alarm of the fire detector, the dwelling unit receiver side will continue to fire the fire confirmation signal from the repeater during the timer set time. Reset can be performed, and alarm notification to the central side and surrounding dwelling units when a fire sensor erroneously issues an alarm can be prevented beforehand.

Specifically, the receiver circuit section of the receiver for a dwelling unit outputs a voltage signal to a light emitting element of a photocoupler provided in a repeater via a signal line to drive light emission. Then, when the timer expires, when the operation of the fire check switch is detected while the timer is running, and when the power supply to the dwelling unit receiver is stopped, the voltage signal is cut off and the photocoupler is turned off. The light emission drive is stopped. For this reason, the repeater circuit of the repeater detects the interruption of the voltage signal when the light-receiving output of the light-receiving element of the photocoupler disappears.

Further, since the present invention uses a self-restoring fire detector, the receiver circuit section of the dwelling unit receiver keeps operating signals from the repeater for a predetermined time, for example, 10 seconds. When the operation signal is received, the operation signal is held and the holding signal is output to the repeater. On the other hand, when the operation signal from the repeater cannot be received for a predetermined time, for example, 10 seconds, the operation signal is cut off. Sometimes recovery processing is performed.

[0014] Further, the relay circuit of the repeater, when receiving the alarm signal from the fire detector and detecting a voltage signal from the receiver for the dwelling unit, detects a fire to the receiver for the dwelling unit. The output permission state of the decision signal is created, the holding signal from the dwelling unit receiver is received in the output permission state, the output permission state is held, and further, the output permission state from the dwelling unit receiver is held in the output permission state. When the interruption of the voltage signal is detected, a fire determination signal is output to the receiver for the living building.

Subsequently, the repeater circuit section of the repeater receives the confirmation signal (fire representative signal) output based on the fire reception of the living building receiver, and receives the holding signal from the dwelling unit receiver. The input is cut off, the output of the fire determination signal is maintained in an allowable state, and the output of the operation signal to the dwelling unit receiver is continuously maintained. The repeater circuit part of the repeater is
When the confirmation signal from the living room receiver is cut off, the holding of the output permission state of the fire determination signal and the holding of the operation signal to the living room receiver are released. For this reason, the holding of the repeater can be released only from the receiver for the dwelling building, and the holding of the repeater will not be released even if the fire detector recovers.
It is possible to conduct on-site investigations after a fire is reported on the dwelling unit side.

Further, the receiver circuit section of the receiver for the dwelling unit outputs the holding signal to the repeater and, after detecting the interruption of the holding signal on the repeater side based on the confirmation signal from the receiver for the dwelling unit, outputs the signal to the relay. It returns to the initial state when the operation signal from the container is cut off. For this reason, the receiver for dwelling units can be restored from the receiver for dwelling units, and can be restored to the initial state without entering a dwelling unit in response to a false report of a non-residential unit.

Further, the present invention controls a fire lamp of an outdoor indicator provided as a door phone slave unit for a receiver for a dwelling unit. That is, the repeater circuit portion of the repeater, when receiving the holding signal from the dwelling unit receiver, the predetermined power supply voltage that is normally supplied to the outdoor display of the dwelling unit receiver via the power supply and signal line and Outputs a fire signal with a different power supply voltage. The outdoor indicator normally operates by receiving a predetermined power supply voltage from the repeater via a power supply / signal line, and when detecting a fire signal of a power supply voltage different from the normal power supply voltage, blinks a fire lamp. .

Further, the present invention connects a self-restoring fire detector provided in each dwelling unit and operated by receiving power supply from a receiver for a dwelling unit through a detector line, thereby starting the fire detector. When an alarm signal is received, an operation signal is output to a dwelling unit receiver that operates by receiving power supply from dwelling units and a fire alarm is performed,
In addition, a fire alarm is output by outputting a fire determination signal to the receiver for the living premises provided in the center of the caretaker's room, etc., and a fire for an apartment house connected to operate by power supply from the receiver for the living premises. A broadcast system relay is provided.

According to the present invention, when a fire detector receives an alarm, it detects a voltage signal from a receiver for a dwelling unit. Outputs an activation signal, and then outputs a fire confirmation signal to the living building receiver when the interruption of the voltage signal from the dwelling unit receiver is detected, and when a fire detector alarm is received. ,
If the interruption of the voltage signal from the dwelling unit receiver is detected, a repeater circuit section that immediately outputs a fire confirmation signal to the dwelling unit receiver and issues a fire alarm at the dwelling unit receiver is provided. It is characterized by having been provided.

The repeater circuit section of the repeater, when receiving a signal from the fire detector and detecting a voltage signal from the receiver for the dwelling unit, detects a fire to the receiver for the dwelling unit. The output permission state of the confirmation signal is created, the holding signal from the dwelling unit receiver is received in this output permission state, the output permission state of the fire confirmation signal is held, and the dwelling unit receiver is kept in the output permission state. When the interruption of the voltage signal from is detected, a fire determination signal is output to the receiver for the living building.

Subsequently, the repeater circuit section outputs an acknowledgment signal (fire representative signal) which is output based on the reception of the fire by the receiver for the residential building.
Is received, the holding signal from the dwelling unit receiver is cut off, the output permission state of the fire determination signal is continuously maintained, and the operation signal to the dwelling unit receiver is continuously maintained.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION

<Table of Contents> 1. System configuration 2. Repeater and receiver for dwelling unit 3. Receivers for residential building System operation 5. Disconnection monitoring 1. 1. System Configuration FIG. 1 is a system configuration diagram of a fire alarm system for an apartment house according to the present invention. In FIG. 1, a receiver 1 for a residential building for centrally monitoring each dwelling unit is installed at a central side such as a management room. On the other hand, on each of the dwelling units A1 to An, a repeater 2a, a dwelling unit receiver 3a, and an outdoor display 4a are provided, for example, as representatively shown for the dwelling unit A1.

From the repeater 2a, a detector line 6a is drawn out and connects one or more fire detectors 5a.
The fire detector 5a is a self-restoring fire detector. That is, the self-restoring fire detector 5a supplies an alarm current as an alarm signal to the detector line 6a while detecting, for example, smoke due to a fire, and when the smoke due to the fire cannot be detected, the sensor itself. It recovers and stops the alarm current.

When the fire detector 5a issues an alarm, the dwelling unit receiver 3a receives a detector operation signal (hereinafter, simply referred to as an "operation signal") E1 from the repeater 2a and displays an alarm. In response to the reception of the operation signal E1, the dwelling unit receiver 3a is provided with a first timer for accumulation, for example, when the operation signal E1 is obtained continuously for 10 seconds, holds the operation signal, and further relays the signal. The holding signal E2 is output to the relay 2a.
The holding operation is also performed on the side.

The dwelling unit receiver 3a activates a second timer having a time setting of 2 to 5 minutes upon receipt of the operation signal E1 from the repeater 2a, and operates the recovery switch during activation of the second timer. If not, the voltage signal E2 output to the repeater 2a is cut off and a fire determination is notified. Also the second
When the fire determination switch provided on the dwelling unit receiver 3a is operated during the activation of the timer, the voltage signal E2 is cut off irrespective of the second timer to notify the repeater 2a of the fire determination.

The repeater 2a receives the alarm of the fire detector 5a, outputs an activation signal E1 to the dwelling unit receiver 3a, and obtains a holding signal E2 from the dwelling unit receiver 3a. Upon detecting a fire confirmation due to the interruption of the signal E3,
The fire determination signal E4 is output to the living room receiver 1. When the fire reception signal is received by the living room receiver 1 in response to the fire determination signal E4, the confirmation signal E5 is returned to the repeater 2a.

The repeater 2a having received the confirmation signal E5 from the dwelling unit receiver 1 outputs the holding signal E from the dwelling unit receiver 3a.
2 and the self-holding state of the fire determination signal output based on the interruption of the voltage signal E3 so as to be continued, and the holding state by the holding signal E2 from the dwelling unit receiver 3a is separated.
As described above, the holding of the output state of the fire determination signal in the repeater 2a is switched from the holding based on the holding signal E2 from the dwelling unit receiver 3a to the holding based on the confirmation signal E5 received from the dwelling unit receiver 1. The operation of restoring the repeater 2a by the dwelling unit receiver 3a is prohibited, and the operation of restoring the repeater 2a is switched so that it can be performed only by blocking the confirmation signal E4 from the dwelling unit receiver 1.

For this reason, after the fire determining signal E4 is output from the repeater 2a to the receiver 1 for the living building, and the fire alarm display is performed by the receiver 1 for the living building, the repeater 2a is restored for the living building. It can only be performed from the receiver 1 and prevents the resident from performing the recovery process by the receiver for dwelling unit 3a, and it is easy to investigate the alarmed dwelling unit, for example, when the fire detector 5a issues an alarm due to a false alarm. Can be done.

The outdoor indicator 4a receives the fire signal E8 from the repeater 2a and blinks a built-in fire light. The fire signal E8 from the repeater 2a is output with the holding operation when receiving the holding signal E2 from the dwelling unit receiver 3a.
Here, the power line 8, the fire alarm signal line 9, the confirmation signal line 10, and the control signal line 1 are provided between the living room receiver 1 and each of the dwelling units A1 to An.
1 and a voice alarm signal line 12. That is, the repeaters 2a to 2n of the dwelling units A1 to An are connected to the power supply line 8 from the receiver 1 for the dwelling unit. It operates by power supply from the receiver 1 for use.

For this reason, even if there is a power failure at the dwelling unit side, the repeaters 2a to 2n operate normally and the sensor lines 6a to 6n
The fire monitoring by the self-restoring type fire detectors 5a to 5n connected to the can be performed normally. The fire alarm signal line 9 is a repeater 2a
The fire determination signal E4 output from 住 2n is sent to the living room receiver 1. The confirmation signal line 10 is a repeater 2 for the receiver 1 for the residential building.
A confirmation signal E5 when the fire determination signal E4 is received from any of a to 2n is output to the repeater. As the confirmation signal E5, specifically, a fire representative signal in the receiver 1 for a residential building is used.

Further, in the fire alarm system of the present invention, the receivers for dwelling units 3a to 3n and the outdoor indicators 4a to 4n.
Is provided with a speaker for an intercom, so that the loudspeaker 1 is used to give an audio alarm for fire reception using this speaker. The way of issuing an audio alarm on the dwelling unit side is, for example, an audio alarm for the fire floor and the floor immediately above it. In addition, as a method of issuing an audio alarm from the receivers 3a to 3n for the dwelling units and the outdoor indicators 4a to 4n, an audio alarm is issued from both the receiver for the dwelling unit and the outdoor display for a fired dwelling unit, and for other dwellings An audio alert is issued only from the dwelling unit receiver. Of course, the form of the dwelling unit that issues an audio warning can be appropriately determined as needed.

For such an audio alarm to the dwelling unit, a control signal line 11 for controlling the output destination of the audio alarm is drawn from the dwelling receiver 1. The control signal line 11 is
It is drawn for each security zone, such as floor level. Figure 1 shows dwelling unit A
The case where 1 to An are the same floor is taken as an example, and control is performed by outputting a control signal E6. In addition, the audio alarm signal line 12 is connected to the dwelling unit receivers 3a to 3n and the outdoor indicators 4a to 4n of the dwelling units A1 to An to supply the audio alarm signal E7, and is based on the control signal E6a by the control signal line 11. The voice alarm signal line 12 is switched and connected to each speaker, and a voice message based on the voice signal, for example, "Woo, fire, fire. A fire has occurred on the first floor. Please output a warning message such as "Please."

Further, the repeaters 2a to 2a provided in the dwelling units A1 to An
Between 2n, disconnection detection crossover lines 13 are sequentially connected. That is, each of the repeaters 2a to 2n is provided with a disconnection detection circuit of the detector lines 6a to 6n to which the fire detectors 5a to 5n are connected. On the other hand, a disconnection detection signal is output via the disconnection detection crossover 13.

The repeater 2 which has detected the disconnection of the sensor line
The disconnection detection signal from a is notified to the final-stage repeater 2n via the disconnection detection crossover 13, and the disconnection detection circuit of the final-stage repeater 2n that has received the disconnection detection signal outputs the signal to the living room receiver 1 By disconnecting the terminating resistor for disconnection detection connected to the fire alarm signal line 9 from
It is possible to notify the living building receiver 1 of the disconnection of the sensor line on the repeater side.

Next, the details of the fire alarm system according to the present invention shown in FIG. 1 will be described with reference to FIGS. 2, 3 and 4. 2. Repeater and Receiver for Dwelling Unit FIG. 2 is a specific embodiment of the repeater 2a, the receiver for dwelling unit 3a, and the outdoor display 4a provided in the dwelling unit A1 in FIG.

From the repeater 2a, a sensor line 6a is drawn out, and the self-restoring fire detector 5 is connected to the sensor line 6a.
a are connected in parallel. Self-healing fire detector 5
When detecting smoke, for example, due to a fire, a and 5a short-circuit the sensor lines 6a to a low impedance, and flow an alarm current. The sensor line 6a is connected to a receiving circuit 14 provided in the repeater 2a. When a fire current is generated by the fire of the fire sensor 5a, the receiving relay L provided in the receiving circuit 14 is activated.

The power supply to the sensor line 6a is performed by connecting the power supply line 8 from the receiver 1 for a living building via the constant voltage circuit 16 and the holding relay circuit 15. In order to detect the disconnection of the sensor line 6a, a terminal resistor 7 for disconnection detection is connected to the fire detector 5a at the last end, and the weak current flowing through the detector line 6a and the terminal resistor 7 is disconnected. Monitoring is performed by the detection circuit 22, and when the disconnection is detected, the relay D is activated. This disconnection detection will be further clarified in the following description.

The receiving circuit 14 responds to the alarm from the fire detector 5a.
Is activated, the relay contact 1 is closed, and an activation signal E1 is output to the receiver 3a for dwelling units. The holding relay M of the holding relay circuit 15 also operates at the same time as the operation of the receiving relay L of the receiving circuit 14, and its relay contact m
1 and m2 are closed, and an output permission state of a fire determination signal and a holding permission state of an operation signal are created.

The dwelling unit receiver 3a is provided with a receiving circuit 30 corresponding to the operation signal E1 from the repeater 2a, and operates the reception relay R when receiving the operation signal E1. The operation of the reception relay R is detected by the control unit 32, and a fire alarm is issued. This fire alarm blinks the fire light on the display unit 38, activates the voice synthesis circuit 52 at the same time, amplifies the voice signal by the amplifier 54, and for example, from the speaker 56, for example, "The detector has issued a warning. Press the recovery switch in case of false alarm. "

When detecting the operation of the receiving relay R, the control section 32 starts the first timer 34 and the second timer 36. The first timer 34 is an accumulation timer for which a time setting of, for example, 10 seconds is performed.
When the operating state of the receiving relay R is obtained continuously for 0 second,
The control unit 32 holds the reception state of the operation signal E1, activates the holding relay H, closes the relay contact h, and outputs the holding signal E2 to the repeater 2a.

If the operating state of the receiving relay R is not obtained continuously for 10 seconds set by the first timer 34, the control unit 32 turns off the operating signal E1 and activates the receiving relay R. At the time of the disappearance, the respective circuit sections of the receiver for dwelling unit 3 are restored to the initial state, including the clearing of the first timer 34 and the second timer 36. Holding signal E for repeater 2a
The signal line 2 is normally terminated with a resistor 48, and the photodiode of the photocoupler 46 is connected in parallel to the resistor 48 via a relay contact h. Therefore, in the steady monitoring state, the holding signal E2 is at the H level.
In this state, when the control unit 32 operates the holding relay H to close the relay contact h, the holding signal E2 falls to the L level due to the parallel connection of the photodiodes of the photocoupler 46, and this is sent to the repeater 2a as the holding signal E2. Is output.

By closing the relay contact h, the relay 2
The photodiode of the photocoupler 46 is driven to emit light by the power supply from the side a, and the output of the photocoupler 46 to the control unit 32 rises from the L level to the H level by turning on the phototransistor.
2 can recognize the output of the holding signal E2 to the repeater 2a.

When the second timer 36 has timed out within a predetermined time within a predetermined range of 2 to 5 minutes after the second timer 36 has been activated by the reception of the operation signal E1, the fire determination relay K
Is activated to open the relay contact k and output a cutoff of the voltage signal E3 to the repeater 2a. Normally, the voltage signal E3 to the repeater 2a is the power supply voltage + 12V from the power supply unit 62 of the dwelling unit receiver 3a.
Is activated and the relay contact k is opened, the voltage signal E3 falls to no voltage.

By the interruption of the voltage signal E3,
The dwell unit receiver 3a notifies the repeater 2a of the fire decision. The interruption of the voltage signal E3 indicating fire determination is also performed when the fire determination switch 40 provided in the control unit 32 is operated. That is, when the fire determination switch 40 is turned on while the second timer 36 is running, the control unit 32 detects this on operation and immediately activates the fire determination relay T to open the relay contact t, thereby controlling the relay 2a. Voltage signal E
3 is shut off, and the fire is similarly notified.

The control unit 32 of the dwelling unit receiver 3 a is provided with a recovery switch 42 and a sound stop switch 44 in addition to the fire determination switch 40. Receiver for dwelling unit 3
When a fire alarm is given by receiving the operation signal E1 at a,
Before the second timer 36 times out, the recovery switch 4
When the second timer 3 is turned on, on condition that the operation signal E1 is not received, that is, the reception operation of the reception relay R of the reception circuit 30 is not performed, the second timer 3 is turned on.
When the time is up, the circuit units of the receiver 3a are restored to the initial state.

On the other hand, even if the recovery switch 42 is turned on, if the reception operation of the receiving relay R is being performed, the operation of the recovery switch 42 is invalidated, and the operation of the fire determination relay K activates the relay contact. By opening k, the voltage signal E3 to the repeater 2a is cut off, and the fire determination is notified.
Furthermore, the sound stop switch 44 can stop the voice message from the speaker 56 by being turned on during the fire alarm of the dwelling unit receiver 3a.

A holding circuit 20 is provided in the repeater 2a for the holding signal E2 output from the dwelling unit receiver 3a when the first timer 34 times out. Holding circuit 2
0 is a receiver 3 for dwelling units via the relay contact f2 of the relay F.
Receiving the holding signal E2 from a, it operates when the holding signal E2 becomes L level to create an operating state of the holding relay M provided in the holding relay circuit 15.

That is, the holding signal E2 is output from the dwelling unit receiver 2a.
Even if the fire detector 5a recovers after receiving the signal and the receiving relay L of the receiving circuit 14 recovers, the operation state of the holding relay M of the holding relay circuit 15 is continuously maintained. When the holding circuit 20 receives the holding signal E2 from the dwelling unit receiver 3a, it outputs a fire signal E8 to the outdoor indicator 4a to cause the fire lamp 66 to blink. The fire signal E8 is output by switching the normal power supply voltage + 12V to a higher + 24V.

When the repeater 2a detects a fire decision due to interruption of the voltage signal E3 output from the dwelling unit receiver 2a in the holding state of the output permission state based on the holding signal E2, the relaying unit 2a sends a signal to the dwelling unit receiver. The fire determination signal E4 is output.
Specifically, the voltage signal E3 from the dwelling unit receiver 3a is input to the photodiode of the photocoupler 18,
Normally, the light emission driving of the photodiode is performed by the voltage signal E3, and the output of the photocoupler 18 to the inverter 25 is at the L level by turning on the phototransistor.

As a result, since the output of the inverter 25 is at the H level, the relay contact m2 is already closed by the operation of the holding relay M, and the output is permitted, but the fire confirmation transfer relay S is not operated. It is in a state.
When the fire is notified by the interruption of the voltage signal E3 from the dwelling unit receiver 3a, the light emission of the photodiode of the photocoupler 18 is stopped, the phototransistor is turned off, and the input to the inverter 25 is changed from L level to H level. Stand up.

As a result, the output of the inverter 25 changes from the H level to the L level, the relay contact m2 is closed, and the output is permitted, so that a current flows through the fire determination and transfer relay S to operate. Therefore, the relay contact s1 is closed, and the fire alarm signal line 9 for the living building receiver 1 is set to L level.
The signal is pulled down to the level and the fire determination signal E4 is output. In response to the transmission of the fire determination signal E4 from the repeater 2a to the receiver 1 for the living building, the receiver 1 for the living building returns a confirmation signal E5 when an alarm is received, as will be described later. I do.

The confirmation signal E5 is an output of a fire representative signal in the living room receiver 1. Receiver for living ridge 1
The relay 2a which has received the confirmation signal E5 from the relay relay s is closed by the operation of the fire confirmation transfer relay S at that time.
The relay relay f provided on the signal line side of the operation signal E1 for the dwelling unit receiver 3a by operating the confirmation relay F via
1 and the holding signal E from the dwelling unit receiver 3a.
The relay contact f2 provided in the input circuit No. 2 is opened.

When the relay contact f1 is closed, the relay contact m1 of the holding relay M is already closed at this time and the operation signal E
1, a series connection circuit of the relay contact f1 and the relay contact m1 is formed, and the dwelling unit receiver 3a
, A state in which the output of the operation signal E1 is fixedly created. For this reason, the confirmation signal E5 from the receiver 1
After receiving the alarm, even if the receiving relay L is deactivated and the relay contact l is opened due to the recovery of the fire detector 5a, the activation signal E1 to the dwelling unit receiver 3a is continuously output.

When the relay contact f2 is opened, the input of the holding signal E2 from the dwelling unit receiver 3a is cut off, and the holding circuit 20 is switched to the holding state by the confirmation signal E5 from the dwelling unit receiver. When the relay contact f2 is opened, the light emission drive of the photodiode of the photocoupler 46 provided in the output circuit of the holding signal E2 of the dwelling unit receiver 3a is stopped, and the phototransistor is turned off, so that the phototo the control unit 32 is turned off. The output of the coupler 46 falls from the H level to the L level.

Thus, the control unit 32 can recognize that the repeater 2a has been switched to the fire-determination output holding state based on the confirmation signal E5 from the living room receiver 1. The control unit 32 that has recognized the L level output from the photocoupler 46
After that, the repeater 2a outputs the confirmation signal E from the receiver 1 for the living building.
5 is restored by the interruption of the relay 5, and the relay contact f1 of the relay F
Relay R due to the interruption of the operation signal E1 when the switch is opened
In response to the restoration, the state can be restored to the initial state.

Next, the outdoor display 4a will be described. The outdoor indicator 4a normally operates by receiving + 12V output from the constant voltage circuit 16 of the repeater 2a via a power supply and signal line for receiving the fire signal E8. The outdoor indicator 4a is provided with a detection circuit 64 for detecting the fire signal E8 output from the repeater 2a. Normally, since the relay provided in the detection circuit 64 is inactive, the fire lamp 66 is turned off and the relay contact e is open as shown in the figure.

When the holding circuit 20 receives the holding signal E2 from the dwelling unit receiver 3a and performs the holding operation in the repeater 2a, the supply voltage to the outdoor indicator 4a is increased by + 12V.
Is switched to + 24V, which becomes the fire signal E8. The detection circuit 64 detects the supply voltage +24 V, activates the relay, blinks the fire light 66, and closes the relay contact e.

Next, the receiver 3a for the dwelling unit and the outdoor indicator 4a
The output control of the audio alarm from the receiver 1 for a residential building in the above will be described. The receiver 3a for dwelling units and the outdoor display 4a are provided with a relay B for audio output control. Each of the relays B is actuated by a control signal E6a from the receiver 1 for a residential building. That is, the relay B of the dwelling unit receiver 3a is activated by receiving the control signal 6a via the photocoupler 60, opens its relay contact b to deactivate the speaker switching relay G, and switches the switching relay contact g to the transformer 58. Switch to the provided voice alarm signal line 12 side.

In the case of the outdoor indicator 4a, the repeater 2
The relay B is operated by the control signal E6a in a state where the relay contact e is closed based on the fire signal E8 from the relay signal e8, and the relay contact b1 is changed to the voice alarm signal line 12 having the transformer 72.
Side, and at the same time, the relay contact b2 is closed to enable the audio alarm signal E7 to be supplied to the speaker 70. For this reason, only the outdoor indicator of the fire dwelling unit outputs sound.

Further, the disconnection detection circuit 4 is provided in the dwelling unit receiver 3a.
5 is provided to monitor the disconnection of the signal line of the operation signal E1 from the repeater 2a. To monitor the disconnection, repeater 2
On the a side, a disconnection detecting circuit 2 is connected in series with a disconnection monitoring resistor 24.
The relay contact d1 of the disconnection detection relay D of No. 2 is connected, and disconnection detection is performed when a weak current flowing through the signal line of the operation signal E1 and the resistor 24 is disconnected. In addition, repeater 2a
When the disconnection of the sensor line 6a is detected by the disconnection detection circuit 22 described above, the disconnection of the relay contact d1 is also detected in the same manner, and the disconnection is displayed on the display unit 38. 3. FIG. 3 shows a receiver 1 for a living building provided in the fire alarm system of FIG.
FIG. The receiver 1 for the residential building is connected to the repeater 2 of each dwelling unit through the power line 8 using the DC 24 V generated by the power supply unit 96.
a to 2n. The fire alarm signal lines 9 from the repeaters 2a to 2n are connected to the receiving circuit 74 and the disconnection detecting circuit 92. Here, the fire alarm signal line 9, the receiving circuit 74, and the disconnection detecting circuit 92 are provided in each of the building security zones, for example, for each floor. Can be received. Therefore, the control unit 76 can determine the fire level by receiving the reception output from the reception circuit 74. In the embodiment of FIG. 3, only the fire signal line 9 on a specific floor is shown for the sake of simplicity.

The control section 76 receives the output of the fire determination signal E4 from the receiving circuit 74 and issues a fire alarm on the display section 78. That is, the representative fire light is turned on on the display unit 78, and at the same time, the district indicator light indicating the fire occurrence floor is turned on. Further, the voice synthesizer 86 is started, and the speaker 87 is
To give an audio alert. Further, the control unit 76 activates the fire representative relay FA and, at the same time, activates a district relay, for example, the district relay R1 indicating the received floor among the district relays R1 to Rn provided for each floor.

When the representative fire relay FA is operated, the relay contact fa is closed, and a confirmation signal E5 is output to the repeater. Further, the relay contact r1 of the activated area relay R1 provided in the matrix circuit 84 is turned on, and the control signals E6a and E6b are output to the fire floor and the floor immediately above based on a preset diode matrix. At the same time, the voice synthesizing unit 86 is activated, and the voice signal of the voice message is output and amplified by the amplifier 88. Then, the voice warning signal E7 is output to the voice warning signal line 12 via the transformer 90, and the control signals E6a and E6b are used. The sound output from the receiver for each dwelling unit on the fire floor and the floor immediately above and the outdoor indicator of the fired dwelling unit is performed. In addition, the disconnection detection circuit 92 normally monitors a weak current flowing through a disconnection detection resistor connected between the fire alarm signal line 9 and the fire alarm signal line 9 of the last-stage repeater 2n, When the monitoring current is interrupted, a disconnection detection output is sent to the control unit 76 to cause the display unit 78 to display the disconnection of the fire alarm signal line 9. Disconnection of the fire alarm signal line 9 is indicated by the repeater 2a.
In the same manner, when the disconnection of the sensor lines 6a to 6n is detected on the 2nd to 2n sides, the disconnection is detected and displayed. 4. System Operation In the fire alarm system of FIG. 1, the system operation will be described by taking as an example a case where a fire has occurred in the dwelling unit A1. When a fire occurs in the dwelling unit A1, the fire detector 5a connected to the detector line 6a is activated, and outputs an alarm signal to the repeater 2a. That is, as is apparent from the repeater 2a in FIG.
An alarm current flows through the detector line 6a by the alarm of the fire detector 5a, the receiving relay L of the receiving circuit 14 is activated, the relay contact l is closed, and the activation signal E1 is output to the dwelling unit receiver 3a.

At the same time as the operation of the receiving relay L, the holding relay M of the holding relay circuit 15 also operates, and its relay contact m
1 and m2 are closed to create a fire permission signal output permission state and an operation signal E1 hold permission state. Dwelling unit receiver 3a
Receives the operation signal E1 from the repeater 2a,
The first timer 34 and the second timer 36 detect the operation of the reception relay R by detecting the operation of the reception relay R by the control unit 32.
Start At the same time, an alarm is displayed on the display unit 38,
Further, the voice synthesizing unit 52 is activated to output an alarm message from the speaker 56.

When the control section 32 continuously detects the operating state of the receiving relay R for 10 seconds set by the first timer 34, the controlling section 32 holds the receiving state of the operating signal E1, activates the holding relay H, and activates the relay. Close the contact h, and repeater 2a
And outputs a holding signal E2 at L level. In addition, when the operation state of the reception relay R is not obtained continuously for 10 seconds set by the first timer 34,
When the activation signal E1 is cut off and the reception relay R stops operating, each circuit section of the dwelling unit receiver 3a is restored to the initial state, including clearing of the first timer 34 and the second timer 36.

The relay 2a, which has received the holding signal E2, activates the holding circuit 20 via the relay contact f2, and holds the holding relay M so that it does not become inactive even when the fire detector 5a recovers. The holding circuit 20 simultaneously increases the supply voltage to the outdoor indicator 4a from +12 V to the fire signal E8 +2.
Change to 4V to display a fire. Outdoor indicator 4a
The detection circuit 64 detects +24 V which becomes the fire signal E8, blinks the fire light 66, closes the relay contact e by the operation of the relay, and makes the relay B operable.

Subsequently, the control unit 32 of the dwelling unit receiver 3a
A second timer 36 that sets a predetermined time within a range of 2 to 5 minutes
Watching time up. When the second timer 36 times out, the fire determination relay K is operated to open the relay contact k, and the fire determination is notified by cutting off the voltage signal E3 to the repeater 2a. Of course, if the ON operation of the fire determination switch 40 is detected before the second timer 36 times out, the fire determination relay T is immediately activated to open the relay contact t, thereby forcibly enabling the fire regardless of the second timer 36. Repeater 2 cuts off voltage signal E3 and confirms fire
Notify a.

When the voltage signal E3 from the dwelling unit receiver 3a is cut off based on the determination of the fire, the output of the photocoupler 18 rises from the L level output up to that time to the H level output, and the inverter 25 switches to the L level output. When the output is inverted, the relay contact m2 is closed and the output is allowed, so that a current flows through the fire confirmation notification relay S and the relay is activated.

When the fire decision relay S is activated, the relay contact s1 is closed, and a fire decision signal E4 at L level is output to the living room receiver 1 via the fire report signal line 9. Further, the relay contact s2 is closed, and a state in which the confirmation signal E5 from the dwelling unit receiver 1 can be received is created. Fig. 3 shows the receiver 1 for the residential building.
As described above, the fire determination signal E4 from the repeater 2a is received by the reception circuit 74 via the fire alarm signal line 9, and the control unit 76 receives the reception output from the reception circuit 74, and the display unit 78 displays the fire representative signal. Display and district display. At the same time, the representative fire relay FA of the relay circuit 82 is activated, and at the same time, the corresponding district relay R1 is activated. The activation of the fire representative relay FA closes the relay contact fa, and outputs a confirmation signal E5 to the repeater 2a via the confirmation signal line 10.

The relay 2a shown in FIG. 2 which has received the confirmation signal E5 from the living room receiver 1 activates the relay F, closes the relay contact f1, and connects a series circuit with the already closed relay contact m1. The activation signal E for the receiver 3a for dwelling units
1 is continuously maintained. Further, by opening the relay contact f2, the input of the holding signal E2 from the dwelling unit receiver 3a is cut off, and the holding operation of the holding circuit 20 of the repeater 2a is performed by the confirmation signal E5 from the dwelling unit receiver 1.

Further, in the receiver 1 for living premises in FIG. 3, the relay contact r1 of the matrix circuit 84 is turned on by the operation of the district relay R1, and the fire occurrence floor predetermined by the diode matrix and the floor immediately above it are set. On the other hand, the control signal E6a,
E6b is output. Control signal E6a for fire occurrence floor
Is provided to the receiver 3a for dwelling units and the outdoor indicator 4a in FIG. That is, in the dwelling unit receiver 3a, the photodiode of the photocoupler 60 is driven to emit light by the control signal E6a, the relay B is activated by turning on the phototransistor, and the relay switch b is opened by opening the relay contact b. As a non-operation, the relay contact g is switched to the voice alarm signal line 12 side.

In the case of the outdoor indicator 4a, the relay B
, The speaker 70 is switched to the voice alarm signal line 12 by the relay contact b1, and at the same time, the relay contact b2 is closed to enable the input of the voice alarm signal E7 to the transformer 72. Other dwelling units A2-A other than the fire dwelling unit A1
In the case of n, only the relay B of the dwelling unit receivers 3b to 3n operates to switch the speaker 56 to the voice alarm signal line 12 side. Also for the dwelling unit receiver on the immediately upper floor, the speaker 56 is switched to the voice alarm signal line 12 by the operation of the relay B by the control signal E6b.

With the output of the control signals E6a and E6b, the control unit 76 of the living room receiver 1 shown in FIG. 3 activates the voice synthesizing unit 86 and amplifies the voice signal by the amplifier 88. The signal is transmitted to the audio alarm signal line 12 as an audio alarm signal E7. For this reason, the audio alarm signal E7 from the dwelling receiver 1 is supplied to the speaker 56 of the dwelling unit receiver 3a and the speaker 70 of the outdoor display 4a in FIG. 2, and for example, "Woo, fire, fire. 1 A fire occurred on the floor. Please confirm your safety and evacuate. " At the same time, the same voice message is output from the speakers of the dwelling unit receivers of the other units on the fire floor and the floor directly above.

Next, the operation in the case where a fire alarm is issued due to a malfunction at the dwelling unit will be described. The fire detector 5a connected to the detector line 6a from the repeater 2a in FIG. 2 malfunctions due to a cause other than a fire, for example, due to the influence of a stove, a stove, etc., and generates a warning for more than 10 seconds. Suppose that it continued. In response to such a malfunction of the fire detector 5a which lasts for 10 seconds or more, the reception operation of the repeater 2a is performed in the same manner as in a normal fire, and an alarm signal and an alarm sound are received by the dwelling unit receiver 3a upon receiving the operation signal E1. Is output.

At this time, the control unit 32 activates the first timer 34 and the second timer 36 in response to the reception of the operation signal E1, and since the malfunction state continues for 10 seconds or more, the first timer 34 continues for 10 seconds. The operating state of the receiving relay R is obtained, the receiving state of the operating signal E1 is held, and the holding signal H2 is turned on to the repeater 2a by operating the holding relay H.
And the holding operation of the holding circuit 20 of the repeater 2a is performed.

However, before the time-out of the second timer 36, it is confirmed that the resident in the dwelling unit has not fired,
Based on this, the recovery switch 42 provided on the receiver for dwelling unit 3a is turned on. When the recovery switch 42 is turned on, the control unit 32 checks the operation state of the reception relay R. At this time, the fire detector 5a, which has already caused a false alarm, has been recovered because it is not a true fire.
Is in the activated state.

Accordingly, the control unit 32 determines that the operation signal E1 has been received due to a false report, and stops the alarm display on the display unit 38 and the voice output by the voice synthesizing unit 52 to restore the initial state. Also, with the recovery, the holding relay H is also deactivated, the relay contact h is opened, the holding signal E2 returns to the H level, the state is released, and the operation of the holding circuit 20 is restored. The 15 holding relays M are also restored to the inactive state.

As described above, in the fire alarm system according to the present invention, before the time of the second timer 36 provided in the dwelling unit receiver 3a can be set to 2 to 5 minutes before the time-up,
By operating the recovery switch 42, the operation for receiving the alarm can be restored to the initial state. Next, a description will be given of a system operation in a power outage state in which the supply of AC 100 V to the dwelling unit receiver 3a is cut off. In the dwelling unit receiver 3a of FIG. 2, in a power outage state where AC 100 V to the power supply unit 62 is cut off, the power supply voltage from the power supply unit +12 V
Are all stopped in the circuit of the receiver 3a for dwelling units. At this time, the voltage signal E3 for the repeater 2a is also in a non-voltage cut-off state, but the cut-off state of the voltage signal E3 is seen from the repeater 2a, and a fire confirmation notification is issued from the dwelling unit receiver 3a. It is the same state as.

That is, in a state in which the dwelling unit receiver 3a is out of power, the same condition as when the notification of a fire decision is fixedly transmitted from the dwelling unit receiver 3a to the repeater 2a. For this reason, the output of the photocoupler 18 of the repeater 2a is at H level, and the fire determination transfer relay S is in an operation allowable state with the L level output due to the inversion of the inverter 25.

When the fire detector 5a issues an alarm in the power outage state of the dwelling unit receiver 3a, the receiving relay L of the receiving circuit 14 is activated and the holding relay M of the holding relay circuit 15 is also activated. The contacts m1 and m2 are closed.
When the relay contact m2 is closed, the fire determination transfer relay S is activated immediately due to the L-level output of the inverter 25 because the relay S is in the operation-permitted state, the relay contact s1 is closed, and the fire determination signal E4 is transmitted to the living room receiver 1. Output. When the relay contact s2 is closed, the confirmation signal E5 from the receiver 1
Create a receivable state.

In response to the output of the fire determination signal E4 from the repeater 2a, the relay contact fa is closed by the operation of the representative fire relay FA in the living room receiver 1 in FIG. 3, and the confirmation signal E5
Is sent back, the relay F of the repeater 2a is operated, the relay contact f2 is cut off, and the confirmation signal E from the receiver 1 for the residential building is cut off.
5, the state of holding the fire determination output of the repeater 2a is created.

The relay B of the outdoor indicator 4a is activated by the output of the control signal E6a based on the reception of the fire determination signal E4 in the living room receiver 1 of FIG. 3, switching the relay contact b1 and switching the relay contact b2. When the speaker 70 is closed, the speaker 70 is connected to the audio alarm signal line 12 side, and an audio message can be output by supplying the audio alarm signal E7 from the living room receiver 1.

In the dwelling unit receiver 3a in the power failure state, the speaker switching relay G is deactivated due to the power failure, and the relay contact g is switched to the voice alarm signal line 12 side. For this reason, the audio alarm signal E7 from the receiver for dwelling unit 1 is supplied to the speaker 56 of the receiver for dwelling unit 3a,
Audio output can also be performed from the dwelling unit receiver 3a.

As described above, in the fire alarm system of the present invention, even if a power failure occurs in the dwelling unit receiver 3a, the fire monitoring of the dwelling unit can be performed by the central dwelling receiver 1 side. Also, the output of the audio alarm is not affected by the power failure,
It can be performed in exactly the same way as in the normal case. 5. Disconnection monitoring Next, disconnection monitoring in the fire alarm system of the present invention will be described. Disconnection monitoring in the fire alarm system of the present invention
There are the following three.

Monitoring of the disconnection of the signal line of the operation signal E1 of the repeater and the receiver for the dwelling unit Monitoring of the disconnection of the sensor line of the repeater Monitoring of the disconnection of the fire alarm signal line between the repeater and the receiver for the dwelling unit First, FIG. The monitoring of the disconnection of the signal line of the operation signal E1 of the repeater 2a and the dwelling unit receiver 3a will be described with reference to FIG. For a signal line for sending the operation signal E1 from the repeater 2a to the receiver 3a for dwelling unit, a resistor 24 for disconnection detection is connected to the repeater 2a via a relay contact d1. Therefore, the activation signal E
A weak monitoring current determined by the resistor 24 is supplied to the signal line 1 by the power supply from the dwelling unit receiver 3a. When the signal line of the operation signal E1 is disconnected, the weak monitoring current determined by the resistor 24 is interrupted, and the disconnection of the monitoring current is detected by the disconnection detection circuit 45 of the dwelling unit receiver 3a, and the control unit detects the disconnection. Output is performed, and the control unit 32 performs a disconnection display on the display unit 38.

Next, monitoring of the disconnection of the sensor line 6a of the repeater 2a will be described. The fire detector 5a at the end of the fire detector 5a connected to the detector line 6a drawn from the repeater 2a has a built-in resistor 7 for disconnection monitoring and is connected to the end of the detector line 6a. A monitoring current for monitoring a weak disconnection determined by the resistor 7 is supplied to the sensor line 6a. This monitoring current is monitored by the disconnection detection circuit 22.

When the sensor line 6a is disconnected, the weak monitoring current determined by the resistor 7 is disconnected, and the disconnection detection circuit 22 is disconnected.
Detects a disconnection of the sensor line 6a and outputs a disconnection detection relay D
Operate. When the disconnection detection relay D is activated, the relay contact d1 provided on the signal line side of the operation signal E1 is opened, and a pseudo disconnection state is created for the signal line of the operation signal E1. The disconnection detection of the line 6a is notified.

In the dwelling unit receiver 3a, a false disconnection state caused by the relay contact d1 is detected by the disconnection detection circuit 45, and the control unit 32 displays the disconnection on the display unit 38. The disconnection detection result of the sensor line 6a of the repeater 2a further indicates the
, And the disconnection display is also performed in the receiver 1 for the residential building. FIG. 4 shows an embodiment for notifying the living room receiver 1 of a disconnection detection result of the sensor lines of the repeaters 2a to 2n. Each circuit of the repeaters 2a to 2n is basically the same as the repeater 2a of FIG. 2, but the output of the fire determination signal E4 to the receiver 1 for the living room in the terminal repeater 2n installed at the same guard area. A disconnection monitoring resistor 100 is connected to the circuit section via a relay contact d2 of a disconnection detection relay D of the disconnection detection circuit 22.

Further, the disconnection detecting circuit 22 provided in each of the repeaters 2a to 2n is connected to the power supply line 8 from the receiver 1 for the residential building by + 24V.
An input terminal 102 for inputting the power supply voltage of the input terminal 102 and an output terminal 104 for outputting a power supply voltage of +24 V to the disconnection detection circuit 22 of the repeater at the next stage. Is supplied to the output terminal 104. Disconnection detecting circuit 2 of repeater 2a located at the preceding stage
2 is connected to the input terminal 102 of the disconnection detecting circuit 22 of the last-stage repeater 2n via the disconnection detection connecting wire 13.
Is connected via a repeater on the way.

Although FIG. 4 shows the repeaters 2a and 2n, the other repeaters located before the last repeater 2n are also connected to the output terminals 104 of the respective disconnection detecting circuits 22.
Is the input terminal 10 of the disconnection detection circuit 22 of the repeater 2a at the next stage.
2 are connected in parallel. When the disconnection detection crossover line 13 is connected to the repeater 2a and the last-stage repeater 2n, when the sensor line 6a of the repeater 2a is disconnected and the disconnection detection circuit 22 performs disconnection detection, the input terminal 102 Is supplied to the output terminal 104, and the disconnection detection circuit 2 of the final stage repeater 2n is connected via the disconnection detection crossover 13.
2 input terminal 102.

For this reason, the power supply voltage +
The disconnection detection relay D of the disconnection detection circuit 22 provided in the last-stage repeater 2n receiving 24V is operated, and the relay contact d2 connected to the end of the fire alarm signal line 9 is opened to simulate a disconnection state. To produce For this reason, in the living room receiver 1 of FIG. 3, the disconnection detection circuit 92 detects the disconnection of the fire alarm signal line 9, and the control unit 76 causes the display unit 78 to display the disconnection.

Further, as shown in FIG. 4, the disconnection of the fire alarm signal line 9 for sending the fire determination signal E4 to the receiver 1 for housing is monitored by the relay 2n at the last stage through the relay contact d2. The resistor 100 is connected, and a weak current determined by the resistor 100 flows through the fire alarm signal line 9, and this is monitored by the disconnection detection circuit 92 of the living room receiver 1 in FIG. 3. If there is a disconnection in the fire alarm signal line 9, in the receiver 1 for a residential building, the disconnection detection circuit 92 detects the disconnection, and the control unit 76 causes the display unit 78 to display the disconnection.

The disconnection display of the fire alarm signal line 9 in the receiver 1 for the living premises cannot be distinguished from the disconnection display of the sensor lines 6a to 6n of the repeaters 2a to 2n. Since the disconnection display is also performed simultaneously on the dwelling unit receivers 3a to 3n side, the dwelling unit receivers 3a to 3n
By confirming the presence or absence of a disconnection on the n side, it is possible to distinguish between a disconnection of the fire alarm signal line 8 and a disconnection of the sensor lines 6a to 6n.

Although the system configuration in FIG. 1 takes a specific floor of a building, for example, dwelling units A1 to An on the first floor as an example, in practice, a plurality of dwelling unit-side facilities are provided for the dwelling unit receiver 1. The system configuration is similarly connected by a signal line between the receiver 1 for the house and the receiver 1 separately. In the above embodiment, the repeaters 2a to 2n are provided independently. However, the repeaters 2a to 2n may be housed in the housings of the outdoor indicators 4a to 4n and the receivers 3a to 3n for dwelling units. Further, the timer time of 2 to 5 minutes of the second timer 36 provided in the dwelling unit receiver 3a can be arbitrarily set variably at the site according to the environment.

[0094]

As described above, according to the fire alarm system for a condominium according to the present invention, the fire detector and the repeater of each dwelling unit are operated by the power supply from the receiver for the dwelling unit. Even if the power supply to the receiver for a dwelling unit is cut off because the is empty, the fire of the dwelling unit can be reliably monitored.

Further, when a voltage signal is used as a notification signal of a fire determination from the dwelling unit receiver to the repeater, and when the interruption of the voltage signal is detected by the repeater, the fire determination transfer from the dwelling unit receiver is performed. Since a fire alarm was determined to have been issued, a fire confirmation signal was immediately output to the living room receiver upon receiving a fire detector alarm, even when a voltage signal was cut off due to a power outage of the dwelling unit receiver. As a result, a fire alarm can be issued by the receiver for the living building, and even if there is a power outage at the dwelling unit, direct monitoring can be performed by the receiver for the living building, so that high reliability can be obtained.

Further, after the relay of the fire determination is transmitted from the repeater to the receiver for the living building based on the fire determination output of the dwelling unit receiver, the holding of the output state of the fire determination signal in the repeater is released. Can be done only from the receiver for the dwelling building, and it is possible to surely conduct a site survey etc. after a fire alarm is issued on the dwelling unit side.

[Brief description of the drawings]

FIG. 1 is a block diagram of a system configuration of the present invention.

FIG. 2 is a circuit block diagram of an embodiment of the repeater, the dwelling unit receiver, and the outdoor display of FIG. 2;

FIG. 3 is a circuit block diagram of the embodiment of the receiver for a residential building in FIG. 1;

FIG. 4 is a circuit block diagram of an embodiment for realizing a disconnection monitoring function between the repeaters of FIG. 1;

[Explanation of symbols]

 A1 to An: Dwelling unit 1: Receiver for dwelling unit 2a to 2n: Repeater 3a to 3n: Receiver for dwelling unit 4a to 4n: Outdoor indicator 5a to 5n: Fire detector (self-restoring type) 6a to 6n: Sensing Line 7, 24, 100: disconnection detection resistor 8: power supply line 9: fire alarm signal line 10: confirmation signal line 11: control signal line 12: voice alarm signal line 13: disconnection detection crossover 14, 30, 74: reception Circuit 15: Holding relay circuit 16: Low voltage circuit 18: Photocoupler 20: Holding circuit 22, 45, 92: Disconnection detection circuit 32, 76: Control unit 34: First timer (10 seconds) 36: Second timer (2 40: Fire determination switch 42: Recovery switch 44: Sound stop switch 52, 86: Voice synthesis unit 56, 70, 89: Speaker 62, 96: Power supply unit 64: Detection circuit 66: Fire lamp 84: Matrix Circuit 102: input terminal 104: output terminal L, R: reception relay switch B: audio output relay D: disconnection detection relay F: confirmation reception relay G: speaker switching relay H, M: holding relay K, T: fire determination relay FA ： Representative fire relay R1 ～ Rn ： District relay

Claims (10)

[Claims] 1. A self-restoring fire detector, a repeater for connecting the fire detector via a detector line to each dwelling unit, and when the repeater receives an alarm from the fire detector. At least a dwelling unit receiver that receives an operation signal to output and performs a fire alarm and operates by receiving power supply from dwelling units is provided, and receives a fire determination signal from the repeater in the center of a caretaker room or the like. A fire alarm system for an apartment house provided with a receiver for a living building that performs a fire alarm, and a fire detector and a repeater of each of the dwelling units connected to operate by power supply from the receiver for a living building, To the receiver for dwelling units, normally outputs a voltage signal to the repeater, receives an operation signal from the repeater, starts a timer, and when the time is up, and stops supplying power to the receiver for dwelling units. The voltage signal for each of Providing a receiver circuit unit that shuts off, when the relay device receives an alert from the fire detector,
Outputs an activation signal to the dwelling unit receiver when detecting a voltage signal from the dwelling unit receiver, and then determines a fire when detecting interruption of the voltage signal from the dwelling unit receiver. A signal is output to the living room receiver, and when the fire detector is received, if the interruption of the voltage signal from the living room receiver is detected, the fire is immediately made. A fire alarm system for an apartment house, comprising a repeater circuit for outputting a confirmation signal to a receiver for a living building and causing the receiver for a living building to perform a fire alarm. 2. The fire alarm system according to claim 1, wherein the receiver circuit unit of the receiver for the dwelling unit detects the operation of the fire confirmation switch while the timer is running, and the timer circuit detects the operation of the timer. A fire alarm system for an apartment house, wherein a voltage signal output to the repeater is immediately cut off regardless of a set time. 3. The fire alarm system for a condominium according to claim 1, wherein the receiver circuit of the receiver for the dwelling unit detects the operation of the recovery switch while the timer is being activated, and the relay circuit is provided. A fire alarm system for a residential complex, which performs a recovery process on condition that no operation signal is received from a container. 4. The fire alarm system for a condominium according to claim 1, wherein the receiver circuit section of the dwelling unit receiver includes a light emitting element of a photocoupler provided in the repeater via a signal line. When the timer times out, the operation of the fire check switch is detected during the timer start, and the power supply to the dwelling unit receiver is stopped when the timer expires. The voltage signal is cut off to stop the light emission drive of the photocoupler, and the repeater circuit unit of the repeater detects the cutoff of the voltage signal due to the absence of the light receiving output of the light receiving element of the photocoupler. A fire alarm system for an apartment house, characterized in that: 5. The fire alarm system for a condominium according to claim 1, wherein the receiver circuit of the receiver for the dwelling unit continuously receives an operation signal from the repeater for a predetermined time. Self-holding the operation signal and outputting a holding signal to the repeater,
When the operation signal from the repeater has not been continuously received for a predetermined period of time, a recovery process is performed.The repeater circuit unit of the repeater, when receiving the alarm signal from the fire detector, If a voltage signal from the receiving receiver is detected, an output permission state of the fire determination signal to the living building receiver is created, and the holding signal from the dwelling unit receiver is received in the output allowable state. Holding the output allowable state, and when detecting the interruption of the voltage signal from the dwelling unit receiver while holding the output allowable state, outputs a fire determination signal to the dwelling receiver. Then, when a confirmation signal (fire representative signal) output based on the fire reception of the living building receiver is received, the input of the holding signal from the dwelling unit receiver is cut off and the output is performed. Permissible state is continuously maintained, and receivers for dwelling units A fire alarm system for an apartment house characterized by continuously retaining an operation signal to the house. 6. The fire alarm system for a condominium according to claim 5, wherein the repeater circuit of the repeater is configured to perform the fire when the confirmation signal from the receiver for the house is cut off. A fire alarm system for an apartment house, wherein the holding of the output permission state of the determination signal and the holding of the operation signal to the receiver for dwelling units are released. 7. The fire alarm system for a condominium according to claim 6, wherein the receiver circuit of the receiver for the dwelling unit outputs a holding signal to the repeater and then checks the signal from the receiver for the dwelling house. A fire alarm system for an apartment house, characterized in that upon detecting interruption of the holding signal on the repeater side based on a signal, the initial state is restored when the operation signal from the repeater is cut off. 8. The fire alarm system for a condominium according to claim 5, wherein the repeater circuit of the repeater receives a holding signal from the receiver for the dwelling unit to display an outdoor signal. The outdoor display outputs a fire signal having a power supply voltage different from a predetermined power supply voltage that is normally supplied to the device via a power supply / signal line, and the outdoor display normally supplies a predetermined power supply via a power supply / signal line. A fire alarm system for an apartment house, which operates by receiving a voltage from the repeater and blinks a fire light when a fire signal of a power supply voltage different from a normal power supply voltage is detected. 9. A self-restoring fire detector provided at each dwelling unit and operated by receiving power supply from a dwelling unit receiver is connected via a detector line, and the fire detector is alerted. Upon receipt of the signal, the operation signal is output to the dwelling unit receiver that operates by receiving power supply from the dwelling unit, and a fire alarm is issued. A fire alarm is output by outputting a confirmation signal, and in the repeater of the fire alarm system for an apartment house connected to operate by power supply from the receiver for the house, When receiving a voltage signal from the dwelling unit receiver, an operation signal is output to the dwelling unit receiver, and then the interruption of the voltage signal from the dwelling unit receiver is detected. If a fire is detected, a fire confirmation signal is output to the When the alarm of the detector is received, if the interruption of the voltage signal from the receiver for dwelling units is detected, a fire confirmation signal is immediately output to the receiver for dwelling units to output the fire determination signal. A repeater circuit for a fire alarm system for a condominium, comprising a repeater circuit section for causing a fire alarm to be performed by a receiver for a house. 10. The repeater of the fire alarm system for an apartment house according to claim 9, wherein the repeater circuit of the repeater comprises:
When the alarm signal from the fire detector is received, if a voltage signal from the dwelling unit receiver is detected, an output permission state of a fire determination signal to the dwelling unit receiver is created, and the In the output allowed state, the holding signal from the dwelling unit receiver was received, the output allowed state was held, and the interruption of the voltage signal from the dwelling unit receiver was detected in the state where the output allowed state was held. In this case, when a fire determination signal is output to the living building receiver, and subsequently a confirmation signal (fire representative signal) output based on the fire reception of the living building receiver is received, A repeater for a fire alarm system for an apartment house, characterized in that the holding signal from the dwelling unit receiver is interrupted, the output permission state is continuously maintained, and further the operation signal to the dwelling unit receiver is continuously maintained.