JPH01134595A - Warning system for multiple dwelling house - Google Patents

Abstract

PURPOSE:To simplify a constitution and to detect the disconnection of fire sensor lines, as well in respective houses by providing a photo-coupler in parallel with the operation indicator of the fire sensor and sending the operating signal of the fire sensor in the house to an information board in the house with the output of the photo-coupler. CONSTITUTION:When a fire sensor 40 is operated, a switching element 42 is turned on and a display indicator 41 is turned on. Then, an interval between block lines L and C is short-circuited with a low impedance and the operating signal is sent to a receiver 60. A current is allowed to flow to the photo-coupler 21 of a repeator 20 in the order of the line L, a resistance R, a photo-diode 22, a sensor terminal P, a diode 44, the switching element 42, and the line C. Accordingly, an ON signal is impressed from the photo-coupler 21 to an information board 30 in the house and a fire warning is outputted from the information board 30. The restoring of this warning is executed from the receiver 60 in a central supervising room and since the line L is temporarily disconnected, two electric paths to be made flow to the switching element 42 of the sensor 40, namely, a current from either of the terminal P or L is disconnected and the restoring is executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an alarm system for collective housing such as condominiums and housing complexes.

L Conventional example] Conventionally, as this type of fire alarm device, for example,
It is known as No. 9-81787.

That is, as shown in Fig. 2, from the central monitoring device if 1 located in the manager's room of the apartment complex, to the alarm repeater 2 of each dwelling unit.
Fire alarm line 2 connected to 0 by sending wiring extends,
A Zener diode 19 for disconnection detection is connected to the terminal end of the line 2.

Further, a fire detector 3 is connected to each repeater 20 via a detector line 22. A photocoupler 29 is connected in series to the sensor 3 to detect the disconnection and to generate a signal for indicating the operation of the sensor 3 to a housing white indicator (not shown). Furthermore, sensor line 2
2 is provided with transistors 30.31 which are biased to the on state when normal, and these transistors 30.3
1 and each repeater 20, a disconnection confirmation line 36 is connected.

Normally, during monitoring, the fire alarm line 2. A terminating Zener diode 19 is connected to both the sensor line 22 and the disconnection confirmation line 36.
A small current flows through the transistors 30 and 31, and even if any line is disconnected, the monitoring current of the fire alarm line 2 connected to the central monitoring device 1 becomes zero.
Therefore, the central monitoring device is characterized by the ability to monitor disconnections of all lines.

[Problems to be Solved by the Invention] In such a conventional device, the configuration is extremely complicated, and emitter-collector circuits of transistors 30 as many as the number of dwelling units are connected in series to the disconnection check wire 36. Therefore, there are problems such as the voltage drop cannot be ignored or a special terminator is required.

[Means for Solving the Problems] This invention provides a fire alarm system in which a common district line extends from a receiver in a central monitoring room to each dwelling unit, and a terminal for detecting disconnection is connected to the end, and the above-mentioned fire alarm system. In an alarm system for an apartment complex that includes a fire detector connected to a district line in the dwelling unit and a repeater that applies an activation signal of the fire detector to the information board of the dwelling unit, the repeater includes a fire detector. The above-mentioned problem is solved by providing a photocoupler connected in parallel with the operation indicator light in the housing unit, and applying the output of the photocoupler to the housing unit information board as an operation signal for the fire detector in the housing unit. .

"Embodiment" Next, the present invention will be described in detail below with reference to FIG. 1 showing an embodiment thereof.

In FIG. 1, 60 is a receiver installed in the central monitoring room, and from the receiver 60, district lines C are extended to each floor of the apartment complex. District line.

C is a repeater 20 installed in each dwelling unit 10-1 to 10-n.
and the fire detector 40 by feed wiring, and a terminator 50 consisting of a resistor r is connected to the end thereof. The terminator 50 may be a constant voltage diode, a capacitor, etc., as long as it can identify a disconnection of the local line or C from the receiver 60.

Each dwelling unit is further equipped with a dwelling unit information board 30 to which an intercom, gas leak detector, burglar alarm (all not shown), etc. are connected, and fire detection signals are relayed to this dwelling unit information board 30. The voltage is applied from the device 20. The fire detector 40 in the dwelling unit and the receiver 81160 in the central monitoring room are generally commercially available and made according to the standards established by the Fire Service Act, and the fire detector 40 is a sensor 43 that detects smoke etc. A switch element 42 that is turned on by
and an operation indicator light 41 connected in series with the switch element 42, and these are connected between the district line and 0. Furthermore, a terminal P is drawn out from the connection between the operation indicator light 41 and the switch element 42 via an interference prevention diode 44, and this terminal P is connected to one end of the input of the photocoupler 21 of the repeater 20. .

The other end of the input of the photocoupler 21 of the repeater 20 is connected to the district line via a resistor R, and the output of the photocoupler 21 is connected to the information board 30 for each dwelling unit.

The repeater 20 further has a series circuit consisting of a normally open switch 24 whose one end is connected to the district line C and a resistor 25, and whose other end is connected to the P terminal of the sensor 40. By operating 24, an operation test and a disconnection test of the line between the P terminal of the sensor 40 and the repeater 20 can be performed.

In such a configuration, when the fire detector 40 operates, the switch element 42 turns on and lights up the indicator light 41.
The district line and 0 are short-circuited with low impedance, and an operating signal is sent to the receiver 60. In addition, the photocoupler 21 of the repeater 20 has a line, a resistor R, and a photodiode 22.5.
Detector terminal P, diode 44. A current flows in the forward path of the switch element 429 line C, and therefore an ON signal is applied from the photocoupler 21 to the in-house information panel 30, and the information panel 30
A fire alarm is issued. These restorations are carried out in the usual way from the receiver 60 in the central monitoring room by temporarily disconnecting the lines, thereby disconnecting the two electrical paths flowing to the switch element 42 of the sensor 40, i.e. the terminal. P
.

Current from any of L is cut off and restored.

The operation test switch 24 may be used as necessary, and the repeater 20 is generally integrated with the entrance intercom. It is also possible to install an indicator light, and the power for the indicator can be drawn from the information panel of the residence.

[Effects of the Invention] As described above, the alarm system for apartment complexes of this application includes a photocoupler in parallel with the operation indicator light of the fire detector, and the output of the photocoupler is used to notify the information board of the fire detector in the dwelling unit. Since the activation signal is sent out, the configuration is extremely simplified, and the system has features such as being able to detect disconnection of the fire detector line in each dwelling unit in the same way as normal fire alarm equipment.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an embodiment of the alarm system for apartment complexes of the present invention, and FIG. 2 is a diagram showing a conventional example. 10-1 to 1O-fi...dwelling unit, 20...repeater,
30...In-house information board, 40...Fire detector, 50
...terminator, 60...receiver, L, C...district line, 21...hotrapura, 41...operation indicator light

Claims (1)

[Claims] A common district line extends from the receiver in the central monitoring room to each dwelling unit, a fire alarm system with a disconnection detection terminator connected to the end, a fire detector connected to the district line in the above dwelling unit, and a fire alarm system connected to the district line in the above dwelling unit. In an alarm system for an apartment complex, which is equipped with a repeater that applies the activation signal of the detector to an information board in the residence, the relay is provided with a photocoupler that is connected in parallel with an operation indicator light included in the fire detector, An alarm system for an apartment complex, characterized in that the output of the photocoupler is applied to an in-house information panel as an operation signal for a fire detector in the dwelling unit.