JP2002334383A - Monitoring equipment for disaster prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a reduction in cost by making a line used for storage and a line used for unstorage to be the same line to simplify an equipment configuration. SOLUTION: A disaster prevention monitoring panel 1 is provided with a storage fire deciding part 30 for transmitting the first temporally short restoration signal to a signal line for temporarily restoring a fire sensor 6 for a common use part after the elapse of a prescribed period of time from reception of a fire confirmation signal from a fire receiver 4 for a dwelling unit through a repeater 3 or a fire signal from the fire sensor 6 for a common use part and for deciding to be a fire in subsequently receiving a fire confirmation signal or a fire signal, and a fire restoring part 31 for transmitting the second temporally long restoration signal for restoring the repeater 3, the fire receiver 4 for a dwelling unit and the fire sensor 6 for a common use part driven by operation of a restoration switch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention monitoring system for monitoring a fire in each dwelling unit and a common area of an apartment house with a disaster prevention monitoring panel and alarming when a fire occurs.

[0002]

2. Description of the Related Art Conventionally, in a disaster prevention monitoring system for an apartment house, a fire detector is connected to a detector line drawn from a fire receiver for a dwelling unit installed in the dwelling unit to monitor a fire for each dwelling unit. In addition, fire detectors for dwelling units in each dwelling unit are further connected to a disaster prevention monitoring panel installed in a manager's office or the like via a repeater for centralized monitoring.

[0003] Also, in the disaster prevention monitoring equipment of an apartment house,
It is necessary to monitor fires not only in dwelling units but also in common areas such as lobbies, stairs, and corridors, and a fire detector is connected to the common line with a detector line drawn from a disaster prevention monitoring panel to directly monitor fires are doing.

[0004] Fig. 4 shows a conventional disaster prevention monitoring facility, in which a dwelling unit area and a common use unit constitute a separate warning area.
Therefore, for example, when the first floor, second floor,... N floor of an apartment house are taken as an example, a signal line
.. 101n are connected to the common unit fire detector 106.

Signal lines 102a, 102b,... 102n are drawn from the disaster prevention monitoring panel 100 to the dwelling unit area on each floor, and connected to a dwelling unit fire receiver 104 via a repeater 103. The fire detector 105 for dwelling units is connected via the repeater 103.

[0006] The reason why the dwelling unit area and the common area are set as different alert areas is that it is desired that the fire judging process in the disaster prevention monitoring panel 100 is not accumulated for the dwelling unit area and is accumulated for the common area.

[0007] The fire judgment based on the accumulation in the common area is
When a fire signal is received from the fire detector for common use at the disaster prevention monitoring panel, a recovery signal is transmitted to the fire detector for common use once for a certain period of time, for example, 10 seconds after the fire signal is received. If the power supply is temporarily cut off and then restored, and then a fire signal is received again within, for example, 40 seconds, it is determined that a fire has occurred.

[0008] On the other hand, in the fire judgment due to non-accumulation in the dwelling unit area, when a fire check signal is received from the dwelling unit fire receiver by the disaster prevention monitoring panel, it is immediately judged as a fire and an alarm is issued. This is because fire detection has already been performed on the fire detector side for dwelling units, so it is not necessary to judge the accumulated fire again using the disaster prevention monitoring panel.

On the other hand, when a recovery operation is performed to return to a normal monitoring state after receiving a fire at the disaster prevention monitoring time frame, a recovery signal is transmitted to all signal lines, and the activated common area fire detector or repeater is operated. Then, the recovery operation of the fire receiver for dwelling units is performed.

[0010]

However, in the conventional disaster prevention monitoring equipment, the recovery signal sent from the disaster prevention monitoring panel for determining the accumulated fire and the recovery signal for returning to the normal monitoring state are the same. Therefore, when a fire detector for dwelling units is connected to the same signal line as the fire detector for common use units via a repeater, a temporary recovery signal is sent in response to the reception of the fire confirmation signal from the fire receiver for dwelling units via the repeater. Therefore, there is a problem that the repeater and the fire receiver for dwelling units which are desired to be used without storage are forcibly restored.

[0011] Therefore, it is necessary to separate the line desired to be used for non-storage from the line desired to be used for storage, and the number of guard areas is about twice as large as the number of floors of an apartment house. There was a problem that construction was difficult and equipment costs increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a disaster prevention monitoring system in which the line used for storage and the line used for non-storage are the same line, thereby simplifying the equipment configuration and reducing the cost.

[0013]

In order to achieve this object, the present invention is configured as follows. The present invention relates to a disaster prevention monitoring device for monitoring a fire by connecting a storage terminal used for a fire determination based on accumulation and a non-storage terminal used for a fire determination based on non-storage to a signal line drawn from the disaster prevention monitoring panel. A first restoration signal for temporarily restoring the storage terminal to the signal line a predetermined time after the reception of the fire signal when the fire prevention monitor receives a fire signal from the storage or non-storage terminal. And a storage terminal for determining that a fire has occurred when a fire signal is received within another predetermined time from the end of transmission of the first recovery signal, and for recovering the storage and fire storage terminals by operating a recovery switch. And a fire recovery unit for transmitting a second recovery signal of the above, the storage terminal is provided with a first recovery detection unit for detecting and recovering the first recovery signal and the second recovery signal, the non-storage terminal, Ignore the first recovery signal and Characterized in that a second restoration detection unit to recover and detect only the recovery signal.

Further, the present invention provides a fire detector for dwelling units for monitoring a fire by connecting a fire detector for dwelling units installed in a dwelling unit, and a fire detector for a common unit installed in a common unit and monitoring a fire. With the signal line drawn from the disaster prevention monitoring board,
Connect a fire receiver for dwelling units used for non-accumulation fire judgment through a repeater, and connect a fire detector for equipment used for judgment on accumulation fires to monitor fire by using disaster prevention monitoring equipment. When receiving a fire confirmation signal from a fire detector for dwelling units or a fire signal from a fire detector for common use via a repeater, the panel detects a common use fire on a signal line a predetermined time after receiving each signal. A storage unit for transmitting a first recovery signal for temporarily recovering the fire, and determining that a fire has occurred when a fire confirmation signal or a fire signal is received within another predetermined time from the end of transmission of the first recovery signal. And a fire recovery unit for transmitting a second recovery signal for recovering the repeater, the fire detector for dwelling units, and the fire detector for the common use unit by operating the recovery switch, and the first fire detector for the common use unit is provided with the first fire recovery unit. Restoration signal and second restoration signal The first recovery detection unit for detecting and recovering provided, repeaters, ignoring a first recovery signal, a second to recover the dwelling fire receiver detects only the second restoration signal
A recovery detection unit is provided.

Here, the transmission time of the first restoration signal is shortened, and the transmission time of the second restoration signal is increased so that the two can be distinguished.

As described above, according to the present invention, the first restoration signal (temporary restoration signal) for judging the accumulated fire outputted from the disaster prevention monitoring panel is distinguished from the second restoration signal for returning to the normal monitoring state after receiving the fire. Because it is possible to do so, the same signal line from the disaster prevention monitoring panel is relayed to the common area fire detector that makes a fire judgment by accumulation and the non-storage dwelling unit fire receiver in the dwelling area that does not need fire judgment by accumulation The number of lines can be reduced to about half that of the conventional system, because the unit area and the common area can be combined into one security area.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram of the equipment configuration of a disaster prevention monitoring equipment according to the present invention. In FIG. 1, a disaster prevention monitoring panel 1 is installed in a manager's room or the like of an apartment house. For example, when the number of floors of a building is n, signal lines 2a and 2b are provided for every first floor, second floor,. ,... 2n are drawn out.

Here, the security area on each floor is divided into a plurality of dwelling areas and common areas such as corridors and elevator halls. In the present invention, the dwelling area and the common areas are regarded as one security area, and one line is used. I'm pulling out.

The signal lines 2a, 2b,
.. 2n is connected to a fire detector 4 for dwelling units via a repeater 3 for each dwelling unit, and a fire detector 5 for dwelling units installed in the dwelling unit is connected to the repeater 3. Here, the fire detector 5 for a dwelling unit uses a self-restoring fire detector that automatically returns to the monitoring state when the fire disappears after detecting and operating the fire. For this reason, fire detector 5 for dwelling units
For, there is no need for a recovery operation to return to the normal monitoring state after receiving a fire.

On the other hand, the common area fire detector 6 installed in the common area includes a self-holding type fire detector that detects smoke and heat due to a fire and maintains the output of a fire signal. After that, it is necessary to shut off the power supply via the signal line and restore the normal monitoring state.

The disaster prevention monitoring panel 1 is provided with functions of a stored fire judging unit 30 and a fire restoring unit 31. Correspondingly, the fire detector 6 for the common use unit is provided with a first recovery detection unit 32, and the repeater 3 of the dwelling unit is provided with a second recovery detection unit 33.

As fire judgment processing by the disaster prevention monitoring panel 1,
The common area fire detector 6 is a storage terminal used for fire judgment by accumulation, while the fire detector 5 for dwelling units connected via the repeater 3 is a non-storage fire detector used for fire judgment by non-storage. Become a terminal.

In response to the common unit fire detector 6 serving as a storage terminal and the dwelling unit fire detector 5 serving as a non-storage terminal, the fire prevention monitoring panel 1 uses the storage fire determination unit 30 to always make a fire determination in the storage mode. I'm trying to do it.

When receiving a fire confirmation signal from the fire detector 4 for dwelling units via the repeater 3 or a fire signal from the fire detector 6 for the common use unit, the accumulated fire judging unit 30 determines a predetermined time from the reception of each signal. After a time of, for example, 10 seconds, the signal line is cut, and a first restoration signal (temporary restoration signal) for temporarily restoring the common unit fire detector 6 is transmitted. Within another predetermined time, for example, 40
If a fire confirmation signal or a fire signal is received within seconds, it is determined that a fire has occurred.

The temporary recovery by the storage fire judging unit functions effectively for the common unit fire detector 6 as a storage terminal, but for the dwelling unit fire receiver 4 as a non-storage terminal. Does not work effectively.

The fire recovery unit 31 provided in the disaster prevention monitoring panel 1
By operating a restoration switch (not shown), a second restoration signal for restoring the repeater 3, the fire detector 4 for dwelling units, and the fire detector 6 for common use to the normal monitoring state is transmitted. Here, a second restoration signal sent from the fire restoration unit 31 in response to the first restoration signal once sent as a restoration signal by the accumulated fire judgment unit 30.
The recovery signal has a longer signal time. For example, while the first restoration signal as the restoration signal is once 100 ms, the second restoration signal sets a signal time of 1 second.

The first recovery detection unit provided in the common unit fire detector 6 in response to the first recovery signal from the accumulated fire determination unit 30 and the second recovery signal from the fire recovery unit 31 of the disaster prevention monitoring panel 1. 32 has a function of detecting the first restoration signal and the second restoration signal, respectively, when operating by fire detection, and restoring to the normal monitoring state.

On the other hand, the second restoration detecting section 33 provided in the repeater 3 ignores the first restoration signal for temporary restoration which is short in time and only the second restoration signal which is long in time. Is detected, and the operation state of the repeater itself upon fire detection is returned to the normal monitoring state, and at the same time, the dwelling unit fire receiver 4 is restored to the normal monitoring state.

FIG. 2 is a block diagram showing details of the repeater 3 installed in the dwelling unit area of FIG. 1 together with a fire detector 4 for dwelling units and a disaster prevention monitoring panel.

In FIG. 2, sensor lines LA and LC are drawn out from the repeater 3 into the dwelling unit, and a self-restoring fire detector 5 for dwelling unit is connected thereto. Device 7 is connected. The sensor line LA is connected to a fire detection circuit 9 via a switching contact 8.

For the fire detection circuit 9, the constant voltage circuit 1
4 through the diode D2 as the power supply voltage, for example, +
14V is supplied, which is supplied between the detector lines LA and LC. Diode D1 for fire detection circuit 9
Is connected to the charge pump circuit 10 via.

The charge pump circuit 10 has a detector line L
This circuit generates a pulse voltage for detecting a disconnection between A and LC, and generates a pulse voltage of, for example, a pulse peak of 33.5 volts having a pulse width of 3 ms at intervals of 2 seconds. At the timing of the pulse voltage from the charge pump circuit 10, the fire detection circuit 9 detects the line voltage at that time and makes a disconnection determination.

Therefore, the fire detection circuit 9 functions as a disconnection detection circuit when a voltage pulse is output from the charge pump circuit 10, and functions as a fire detection circuit when there is no other voltage pulse.

The fire detection signal e1 from the fire detection circuit 9 is given to the repeater control unit 11. Repeater control unit 11
Is composed of an MPU, and the MPU includes a CPU, a memory, an IO port, and the like. The repeater controller 11 has a second
A function as a recovery detection unit 33 is provided.

When the repeater control unit 11 receives the fire signal e1 from the fire detection circuit 9 due to the operation of the fire detector 5 for dwelling units, the repeater control unit 11 generates a fire signal e2 for causing the fire detector 4 for dwelling units to perform a fire reception operation. Then, the transistor Q1 is turned on, and a low impedance dependent on the resistor R1 is applied between the signal lines SL and SC connecting the fire detector 4 for dwelling units via the resistor R1.

Thus, the fire receiving circuit 17 provided in the dwelling unit fire detector 4 detects a fire signal, and the dwelling unit control unit 18 using the MPU performs a fire alarm operation. In the fire alarm operation, a fire alarm sound is output from a speaker by a voice synthesis circuit (not shown), a fire alarm is displayed on a display (not shown), and an alarm is displayed on an outdoor display.

Upon receiving the fire signal, the dwelling unit control unit 18 activates the fire check circuit 19 when a predetermined time, for example, a predetermined time within a range of 2 to 5 minutes, and sends a fire check signal e3 to a signal line. Output to the repeater 3 through ST. After the fire signal is received by the dwelling unit controller 18, 2
If the fire confirmation switch 18a is operated within a period of up to 5 minutes, the fire confirmation signal e3 is immediately output in this case.

Fire confirmation signal e from fire receiver 4 for dwelling unit
3 drives the photocoupler light emitting unit 15a to emit light, receives the light by the photocoupler light receiving unit 15b, and inputs a fire confirmation signal to the repeater control unit 11. Upon receiving the fire confirmation signal, the repeater control unit 11 outputs a fire confirmation signal e4 to the transistor Q4 provided in the circuit unit on the disaster prevention monitoring panel 1 side, and monitors the disaster prevention via the resistor R6 and the photocoupler light receiving unit 16b. A fire confirmation signal is transmitted to the disaster prevention monitoring panel 1 by causing the alarm current to flow between the sensor lines L and C from the panel 1 with a low impedance.

In the transmission state of the fire confirmation signal, the photocoupler light emitting section 16a is turned on by turning on the transistor Q4.
Is always in a light emitting state, and the photocoupler light receiving section 16b provided on the repeater control section 11 side is turned on, whereby the repeater control section 11 monitors the states of the sensor lines L and C with respect to the disaster prevention monitor panel 1. I have.

Further, the repeater 3 is provided with a circuit for monitoring disconnection between the sensor lines LA and LC. That is, when a disconnection is detected at the timing of the voltage pulse from the charge pump 10, the disconnection is determined by the repeater control unit 11 from the signal level of the detection signal from the fire detection circuit 9, and if the disconnection is determined, the dwelling unit The disconnection detection signal e5 for the transistor Q2 on the fire receiver 4 side is changed from the normal L level to the H level, and the transistor Q2 is switched from off to on.

Therefore, the transistor Q3 is also turned off from on, and the signal lines SL and SC from the fire detector 4 for dwelling units are used.
During this time, the connected resistor R4 is cut off by turning on the transistor Q3, resulting in a simulated disconnection state, whereby the control unit 18 for the dwelling unit recognizes the disconnection of the sensor lines LA, LC and issues a fault alarm.

The relay controller 11 also turns off the disconnection detection signal e6 for the transistor Q5 on the disaster prevention monitor panel 1 side by detecting the disconnection, and turns off the transistor Q5 from the normal ON state by detecting the disconnection. When the transistor Q5 is turned off, the transistor Q6 is turned off, and accordingly, the transistor Q7 is also turned off, so that the resistor R12 is disconnected between the sensor lines L and C from the disaster prevention monitoring panel 1 to be in a pseudo disconnection state. The disaster prevention monitor 1 can recognize and display a fault.

The disaster prevention monitor panel 1 is provided with a constant voltage circuit 20 for outputting a power supply voltage of DC + 24V and a constant voltage circuit 21 for outputting a power supply voltage of DC + 22V. + 24V from the constant voltage circuit 20 is connected to the repeater 3 via the power supply line VS. The output of the + 22V constant voltage circuit 21 is connected to the repeater 3 via the line cut circuit 23 and the fire receiving circuit 22 on the sensor line L side.

The disaster prevention monitoring panel 1 is provided with a monitoring control unit 24 using an MPU, and this monitoring control unit 24 is provided with the functions of the accumulated fire determination unit 30 and the fire recovery unit 31 shown in FIG. . A display unit 25 is provided for the monitoring control unit 24, and an operation unit 26 is provided. The operation unit 26 includes a recovery switch 27.

Next, referring to the time chart of FIG.
The operation of the repeater 3, the dwelling unit fire detector 4, and the disaster prevention monitoring panel 1 when a fire is detected by the dwelling unit fire detector 5 will be described.

At time t1 in FIG. 3A, fire detector 5 for dwelling units connected to detector lines LA and LC from repeater 3
Is fired by fire detection, the relay control unit 11 receives the fire signal e1 from the fire detection circuit 9 of the repeater 3.
3B sends out a fire signal e2 to the dwelling unit fire receiver 4 as shown in FIG. 3B, and receives the fire by the fire receiving circuit 17 of the dwelling unit fire receiver 4 as shown in FIG. 3C. Is performed.

The dwelling unit control unit 18 of the dwelling unit fire receiving device 4 starts the reception of the fire at the time t1, and when a predetermined period of time T1 such as 2 to 5 minutes elapses from the reception of the fire at the time t1, the relay unit 3 shown in FIG.
As shown in (D), a fire confirmation signal e3 is output by the operation of the fire confirmation circuit 19. The fire confirmation signal e3 is received by the repeater control unit 11 via the photocoupler light-emitting unit 15a and the photocoupler light-receiving unit 15b, and turns on the transistor Q4 as the fire confirmation signal e4. A low-impedance resistor R6 is applied between C and a notification current flows to send a fire confirmation signal.

The fire confirming signal from the repeater 3 is received by the fire receiving circuit 22 of the disaster prevention monitoring panel 1, and the accumulated fire judging unit 30 in the monitoring control unit 24 operates. Storage fire judgment unit 30
Is a line cut circuit which outputs a first restoration signal for a temporary restoration having a time width T3 <for example T3 = 0.1 second after a predetermined time T2, for example, T2 = 10 seconds, from the time t2 when the fire confirmation signal is received. 23, and the power supply to the sensor lines L and C is cut off during T3 = 0.1 seconds when the first restoration signal is transmitted.

The time t3 in such a disaster prevention monitoring panel 1
The transistor Q4 provided in the repeater 3 responds to the line cut of T3 = 0.1 second accompanying the transmission of the first restoration signal
Photocoupler light-emitting portion 16a that emits light when light is turned on
Turns off during the transmission time T3 of the first restoration signal = 0.1 second, and accordingly, the photocoupler light receiving unit 16b also turns off for 0.1 second.

In response to the detection of the restoration signal by the photocoupler light receiving unit 16b, the second restoration detection unit 33 provided in the repeater control unit 11 temporarily restores the restoration signal of 0.1 second to the restoration signal. Is ignored, and the recovery operation for returning the fire reception state to the normal state is not performed. Therefore, even if the repeater 3 once sends the first restoration signal for restoration from the disaster prevention monitor 1 at time t3, the repeater 3 continues to send the fire confirmation signal to the disaster prevention monitor 1.

The accumulated fire judging unit 30 of the disaster prevention monitoring panel 1 sends a first restoration signal for restoration once at time t3 to T3 = 0.1.
After the transmission for two seconds, the cutoff state by the line cut circuit 23 is restored to restore the power supply between the sensor lines L and C, and then the fire confirmation signal from the fire reception circuit 22 is checked again. Since the signal is continuously received, it is determined that a fire has occurred, and a fire alarm operation is performed as shown in FIG.

When the fire alarm operation is performed by the disaster prevention monitoring panel 1 after the restoration signal is transmitted at the time t3, and when the fire detection state of the fire detector 5 for the dwelling unit is canceled at the time t4, the fire detector 5 for the dwelling unit is released. Is self-healing,
As shown in FIG. 3A, at time t4, the state is restored to the normal monitoring state.

Further, the recovery switch 27 of the operation unit 26 is activated at time t5 after the fire alarm is activated on the disaster prevention monitor panel 1.
Is performed, the fire recovery unit 31 of the monitoring control unit 24 operates, and the transmission of the second recovery signal causes the line cut circuit 23 to operate the sensor line L for a certain time T4, for example, T4 = 1 second from time t5. , And C, the second restoration signal is transmitted.

Therefore, on the side of the repeater 3, the photocoupler light emitting unit 1
6a is turned off, and the photocoupler light receiving unit 16b receives the light, and the cutoff is continuously input for one second to the repeater control unit 11, and the second recovery detection unit 33 of the repeater control unit 11 is turned off. In this case, the recovery signal input time due to the cutoff of the photocoupler light receiving unit 16b is monitored, and T4 = 1
Upon reaching the second, the reception of the second restoration signal is detected, and the operation of restoring the operation state accompanying the detection of the fire of the repeater 3 is performed.

In this recovery operation, the output of the fire confirmation signal e4 to the transistor Q4 is stopped and the transistor Q4
Is turned off, and at the same time, the output of the fire signal e2 to the transistor Q1 on the dwelling unit fire receiver 4 side is stopped, and the output of the fire confirmation signal e3 from the dwelling unit fire receiver 4 is stopped, thereby returning to the normal monitoring state. The repeater 3 and the fire detector 4 for dwelling units are restored.

On the other hand, if a fire is detected by the common unit fire detector 6 installed in the common unit in FIG.
As shown in FIG. 3 (E), the disaster prevention monitoring panel 1 responds to the fire signal from the common unit fire detector 6 by T3 = 0.1 second after T2 = 10 seconds from the reception of the fire signal by the accumulated fire judgment unit 30. And the line cut circuit 23 temporarily cuts off the power supply between the sensor lines L and C, thereby restoring the fire detection state in the common unit fire detector 6, and thereafter To the operating state again after the first restoration signal is transmitted, for example, 40
If a fire signal is received again from the common unit fire detector 6 within seconds, it is determined that a fire has occurred, and a fire alarm operation is performed.

The recovery operation after the reception of the fire can be performed by operating the recovery switch 27 of the disaster prevention monitoring panel 1 for recovery.
4 = 1 line cut circuit 2 by second restoration signal over 1 second
3 shuts off the power supply between the sensor lines L and C, and in response to this, the operation of restoring the common unit fire detector 6 is performed.

Although the above embodiment has been described with reference to an example of a disaster prevention monitoring facility for an apartment house, a storage terminal used for judging a fire due to accumulation in the same caution area and a non-storage terminal used for judging a fire due to non-accumulation. The monitoring equipment in which the storage terminal is installed is not limited to the apartment house, and can be applied to a sensor line of an appropriate fire alarm equipment as it is.

In the above embodiment, the first restoration signal for restoration once and the second restoration signal for returning to the normal monitoring state are set.
The restoration signal is distinguished by a short time for the first restoration signal and a long time for the second restoration signal. Alternatively, an appropriate signal such as a pulse code or a frequency may be used.

[0060]

As described above, according to the present invention, the first method for judging the accumulated fire outputted from the disaster prevention monitoring panel is described.
A restoration signal (temporary restoration signal) can be distinguished from a second restoration signal for returning to the normal monitoring state after the fire is received, and this is used for the terminal used for the accumulation fire judgment and the non-accumulation fire judgment. Since the terminal side can detect and perform the necessary recovery operation, it makes a judgment on accumulated fire on the same signal line from the disaster prevention monitoring panel. Because the receiver for the dwelling unit for storage can be connected via a repeater, and the common area on the same floor as the dwelling unit can be a single guard area,
The number of lines in the monitoring equipment of an apartment house can be reduced to about half of the conventional one, and as a result, the equipment configuration can be simplified and the equipment cost can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing the equipment configuration of the present invention.

FIG. 2 is a block diagram showing details of the repeater of FIG. 1 together with a fire receiver for a dwelling unit and a disaster prevention monitoring panel.

FIG. 3 is a time chart showing signal outputs of a relay and a disaster prevention monitor panel when a fire detector for a dwelling unit is activated.

FIG. 4 is an explanatory diagram of a conventional facility in which a dwelling unit area and a common use unit are separated from each other.

[Explanation of symbols]

 1: Disaster prevention monitoring panel 2a to 2n: Signal line 3: Repeater 4: Dwelling unit fire detector (non-storage terminal) 5: Dwelling unit fire detector 6: Common area fire detector (storage terminal) 7: Termination 8: Switching contact 9: Fire detection circuit 10: Charge pump circuit 11: Repeater controller 12: Test connector 13: External tester 14, 20, 21: Constant voltage circuit 15a, 16a: Photocoupler light emitting unit 15b, 16b: Photocoupler light receiving unit 17, 22: Fire receiving circuit 18: Dwelling unit control unit 19: Fire check circuit 23: Line cutoff circuit 24: Monitoring control unit 25: Display unit 26: Operation unit 27: Recovery switch 30: Storage Fire determination unit 31: Fire recovery unit 32: First recovery detection unit 33: Second recovery detection unit

Continued on the front page (72) Inventor Masashi Arikawa 2-10-43 Kami-Osaki, Shinagawa-ku, Tokyo Ho Chiki Co., Ltd. Incorporated F term (reference) 5C087 AA03 AA07 AA31 BB06 BB74 DD04 DD26 EE13 FF01 FF03 FF04 GG21 GG22 GG30 GG48 GG66 5G405 AA01 AA03 AA06 AC06 BA01 CA07 CA32 CA60 DA15 EA60

Claims (3)

[Claims] 1. A disaster prevention monitor for monitoring a fire by connecting a storage terminal used for judgment of fire due to accumulation and a non-storage terminal used for judgment of fire due to non-storage to a signal line drawn from the disaster prevention monitoring panel. In the equipment, the disaster prevention monitoring panel, when receiving a fire signal from the storage or non-storage terminal, to temporarily restore the storage terminal to the signal line after a predetermined time from the reception of the fire signal And a storage fire determining unit that determines that a fire has occurred when the fire signal is received within another predetermined time from the end of transmission of the first recovery signal, and that the storage switch is operated by operating a recovery switch. And a fire recovery unit for transmitting a second recovery signal for recovering the non-storage terminal. A first recovery that detects and recovers the first recovery signal and the second recovery signal in the storage terminal. Set the detector A disaster recovery monitoring facility, wherein the non-storage terminal is provided with a second recovery detection unit that ignores the first recovery signal and detects and recovers only the second recovery signal. 2. A dwelling unit fire detector for monitoring a fire by connecting a dwelling unit fire detector installed in a dwelling unit, and a common unit fire detector installed in a common unit and monitoring a fire. ,
Connect the fire receiver for dwelling units used for non-accumulation fire judgment via a repeater to the signal line drawn from the disaster prevention monitoring panel, and connect the common area fire detector used for accumulation fire judgment In the disaster prevention monitoring equipment that monitors a fire by performing a fire check signal from the fire detector for the dwelling unit or a fire signal from the fire detector for the common part via the repeater, A first restoration signal for temporarily restoring the common unit fire detector to the signal line after a predetermined time from the reception of each signal, and within another predetermined time from the end of the transmission of the first restoration signal. And a stored fire determination unit that determines that a fire has occurred when the fire confirmation signal or the fire signal is received. 2 A fire recovery unit that sends an old signal, and a first recovery detection unit that detects and recovers the first recovery signal and the second recovery signal in the common unit fire detector is provided. Disaster prevention monitoring equipment comprising: a second recovery detection unit for ignoring the first recovery signal and detecting only the second recovery signal to recover the fire receiver for dwelling unit. 3. The disaster prevention monitoring equipment according to claim 1, wherein a transmission time of said first restoration signal is shortened and a transmission time of said second restoration signal is lengthened.