JPH0138716Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention connects multiple repeaters to the signal line drawn out from the receiver, and connects each repeater with an alarm panel for fire, gas leak, etc. installed in each residential unit. The present invention relates to a repeater for alarm equipment in an apartment complex that connects and relays alarm signals from an alarm panel to a receiver.

In recent years, alarm equipment for fires, gas leaks, etc. in communal housing such as public corporations and condominiums has been provided by installing repeaters in each dwelling unit that function as alarm receiving boards for fires, gas leaks, etc. within the dwelling unit. A facility configuration has been proposed in which a detector for detecting fires, gas leaks, etc. inside the dwelling unit is connected to the device via a line, and repeaters in each dwelling unit are connected to a central receiver via a line for centralized monitoring. In such an alarm system with a repeater installed in each dwelling unit, consideration must be given to monitoring the connection line between the repeater and the detector for fire, gas leak, etc.
It is equipped with a disconnection detection circuit that detects disconnection of the connecting line and transmits a disconnection signal to the receiver.

However, in the case of such conventional alarm system repeaters, even in the event of a power outage, for example in an unoccupied house, the repeater transmits a disconnection signal to the central receiver in the same way as in the case of a failure due to a disconnection. There was a problem with putting it away.

The present invention was developed in view of the above, and involves connecting multiple repeaters to a signal line drawn out from a receiver, and each repeater is equipped with a warning alarm for fire, gas leak, etc. for each residential unit. A repeater for alarm equipment in an apartment complex connects a panel and relays and outputs the alarm signal from the alarm panel to the receiver. To accurately relay and output disconnection signals caused by disconnection of the connecting line of a sensor, and to easily stop the transmission of disconnection signals in the event of a power outage, for example, when the power is intentionally cut off in an unoccupied house. With the goal.

To achieve this objective, the present invention uses a first photocoupler to detect an alarm signal from an alarm panel and relays the alarm signal to a receiver, and a second photocoupler to detect a disconnection signal from the alarm panel. A disconnection detection circuit is installed to relay the disconnection signal to the receiver,
Furthermore, in the event of a power outage, the disconnection detection circuit is
A bypass circuit using a photocoupler is used to prevent the disconnection signal from being sent.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a circuit diagram showing one embodiment of the present invention, taking as an example a repeater used when the power supply for the alarm panel is connected to the alarm panel from behind a breaker in a dwelling unit.

First, to explain the configuration, terminals E1, L1, C
1, A3, and A4 are connected to signal lines from the receiver, terminal E1 is connected to a power line from the receiver, terminals L1 and C1 are signal lines that relay and output disconnection signals, and terminals A3 and A4 are connected to signal lines from the receiver. Each of the signal lines for relaying and outputting the alarm signal is connected to the receiver. One terminal P1, P2, B1, B2, A1, A
2 is connected to the signal line from the alarm panel installed in each dwelling unit, and a power outage signal is sent between terminals P1 and P2 when a power outage is detected, and a disconnection when a fire or gas leak detector is detected. The signal is at terminal B1, B
2, an alarm signal when a fire or gas leak is detected is connected between terminals A1 and A2, respectively. Also, between terminals P1 and P2, there is a light emitting element PC that emits light when the power is normal and stops emitting light when a power failure is detected.
1 is a light emitting element between terminals B1 and B2 that emits light in normal monitoring state and stops emitting light when disconnection is detected.
PC3 further has a light emitting element between terminals A1 and A2 that emits light when it receives a fire or gas leak alarm signal.
Each of PC5 is connected. Light emitting element PC
A light-receiving element PC6, which integrally forms a first photocoupler with 5, is connected between terminals _A3 and _A4 , and is connected to the light-emitting element PC6.
It receives the light emitted by the PC 5 and sends an alarm signal to the receiver. Further, a light receiving element PC4, which receives and conducts the light emitted by the light emitting element PC3, forms a second photocoupler integrally with the light emitting element PC3, and connects terminals L1,
The conduction of the light receiving element PC4 connected between C1 makes the impedance between the terminals L1 and C1 low and outputs a disconnection signal. It is connected in parallel with the light receiving element PC4.
The base of the transistor Q2 is connected to the collector of the transistor Q1 via a resistor R3, and the collector of the transistor Q2 is connected to a resistor R that provides base voltage to the transistor Q1 via a diode D1.
The transistors Q1 and Q2 form a self-holding circuit equivalent to a thyristor. A fault indicator light LD using a light emitting diode to indicate power supply cutoff is connected to the emitter of transistor Q1, and the light emitting element
A light receiving element PC2 that receives light from PC1 forms a third photocoupler integrally with the light emitting element PC1,
It is connected between the base and emitter of transistor Q2. In addition, a switch S1 for unoccupied setting, which prohibits the sending of a disconnection signal from an unoccupied residence that intentionally cuts off the power supply for a long period of time, is connected in parallel to the transistor Q2, and by closing the switch S1, the transistor Q1 , Q2 are turned on to prevent a disconnection signal from being sent to the central receiver in the event of a power outage.

Note that the switch S1 may be provided at an appropriate position where it can be easily set from outside the dwelling unit.

Next, the operation will be explained.

First, the operation in the normal monitoring state will be explained.
Under normal monitoring conditions, the fire or gas leak detector is not operating, and the light emitting element PC5 connected between terminals A1 and A2 has stopped emitting light. Further, a light emitting element PC1 connected between terminals P1 and P2 emits light in response to power supply within the dwelling unit.

On the other hand, a light emitting element connected between terminals B1 and B2
PC3 emits light in response to a conductive signal from an alarm panel installed in the dwelling unit, and the light emitting element PC3
Upon reception of the emitted light, the light receiving element PC4 receives power supply from the receiver and becomes conductive, making the impedance between the terminals L1 and C1 low and transmitting a normal signal to the receiver.

Next, when a fire or gas leak occurs in the dwelling unit and an alarm signal from the alarm panel is input between terminals A1 and A2, the light emitting element PC5 emits light upon receiving the alarm signal. This light drives the light-receiving element PC6 to receive the light, making the impedance between the terminals A3 and A4 low, and transmitting an alarm signal to the receiver.

Next, the operation of disconnection detection in a normal monitoring state will be explained.

If there is a fire or the connection line of the gas leak detector is disconnected, the light emitting element PC3 connected between terminals B1 and B2 will stop emitting light upon receiving a disconnection signal from the alarm panel installed in the dwelling unit. . light emitting element
The light-receiving element PC4 integrated with the PC3 is turned off by cutting off the incidence of light, thereby opening the terminals L1 and C1 and transmitting a disconnection signal to the receiver.

Next, the operation of switch S1 during a power outage will be explained.

For residential units where the power supply is intentionally cut off for a long period of time, closing switch S1 will reduce the power supply voltage supplied from the receiver to resistors R1 and R2.
The voltage is divided by a voltage dividing circuit and applied to the base of transistor Q1. On the other hand, the light emitting element PC1 connected between terminals P1 and P2 stops emitting light due to a power outage in the residence, and the light receiving element integrated with the light emitting element PC1
PC2 is cut off from light and is turned off. Therefore, transistors Q1 and Q2, which form a self-holding circuit equivalent to a thyristor, are turned on, and the fault indicator light LD, which indicates a fault due to a power outage, lights up, and the conduction of transistor Q2 prevents the transmission of a disconnection signal to the receiver. .

FIG. 2 is a circuit diagram showing another embodiment of the alarm repeater according to the present invention.

In this embodiment, a repeater is signal-connected to the alarm panel that supplies power from before the power breaker in the dwelling unit, and it is possible to supply power to the alarm panel for a long period of time, such as in an unoccupied house in the embodiment shown in Figure 1. The feature is that the switch S1 used in the event of a power outage has been removed, and the fault indicator light that indicates a fault and its drive circuit have been removed to further reduce current consumption and equipment costs. When the light-receiving element PC2 is turned off due to extinction of the element PC1, the transistor Q2 is turned on to bypass the light-receiving element PC4, and at the same time as a power failure is detected, the disconnection detection circuit is automatically bypassed to prevent the transmission of a disconnection signal to the receiver. It is something.

Therefore, in the embodiment shown in Fig. 2, in the event of a power outage scheduled in advance, failure reception at the central receiver by sending out a conventional disconnection signal, or failure alarm transmission by a buzzer, etc., can be performed using a special device such as a switch. It can automatically avoid power outages without requiring any operations.

The alarm detection circuit detects the alarm signal from the alarm panel and relays the alarm signal to the receiver, and the disconnection detection circuit detects the disconnection signal from the alarm panel and relays the disconnection signal to the receiver. It has the same circuit configuration as the embodiment shown in FIG.

As explained above, according to the present invention, multiple repeaters are connected to the signal line drawn out from the receiver, and alarm panels for fire, gas leak, etc. are installed in each of the repeaters for each dwelling unit. In a repeater for alarm equipment in an apartment complex that connects the alarm panel and relays the alarm signal from the alarm panel to the receiver, the present invention transmits the alarm signal from the alarm panel and the disconnection signal due to disconnection to the receiver using a photocoupler. Relay output to
Furthermore, in the event of a power outage, a bypass circuit was installed to prevent the transmission of the disconnection signal, so that the relay output of alarm signals for fires, gas leaks, etc. to the central receiver, and the relay output of alarm signals for fires, gas leaks, etc., to the central receiver. The circuit configuration of the repeater realizes the function of accurately relaying and outputting disconnection signals due to disconnection of the connecting line, and also preventing the transmission of disconnection signals in the event of a power outage, thereby improving the system functions of alarm equipment in apartment complexes. The effect is that it is possible to obtain a repeater that operates properly and reliably.

In addition, as a unique effect of the present invention, the alarm detection circuit that relays and outputs alarm signals such as fire or gas leak from the alarm panel to the receiver can be completely separated and independent from other disconnection detection circuits or bypass circuits, etc. This structure prevents malfunctions due to noise, etc., provides appropriate and sufficient warning in the event of an emergency such as fire or gas leak, and enables prompt implementation of emergency measures or evacuation activities in an apartment complex.

Furthermore, by installing a repeater outside the residence as an alarm system for apartment buildings, it is possible to maintain and inspect the repeater, and to prevent unoccupied residences and other residences whose power supply has been cut off for long periods of time. In this case, the unoccupied setting that prevents the sending of a disconnection signal as a measure against a power outage can be handled outside the residence, and the effect is that the alarm equipment can be easily maintained and managed.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing one embodiment of a repeater for alarm equipment according to the present invention, and Fig. 2 shows an example of a repeater that connects a signal to an alarm panel that supplies power from before a power breaker in a dwelling unit. FIG. 1 is a circuit diagram showing an embodiment of the present invention. A1, A2, A3, A4, B1, B2... terminal, P1, P2, E1, L1, C1... terminal,
PC1, PC3, PC5...Light emitting element, PC2, PC
4, PC6... Light receiving element, Q1, Q2... Transistor, R1, R2, R3, R5... Resistor, D
1, D2, D5...diode, LD...failure indicator light, S1...switch.

Claims (1)

[Scope of claim for utility model registration] Multiple repeaters are connected to the signal line drawn out from the receiver, and each of the repeaters is connected to an alarm panel for fire, gas leak, etc. installed in each residential unit, A repeater for alarm equipment in an apartment complex that relays and outputs an alarm signal from the alarm panel to the receiver, comprising: a first photocoupler that detects the alarm signal from the alarm panel and relays the alarm signal to the receiver; , a disconnection detection circuit using a second photocoupler that detects a disconnection signal from the alarm panel and relays the disconnection signal to the receiver; and a disconnection detection circuit that bypasses the disconnection detection circuit and prevents sending of the disconnection signal in the event of a power outage. A repeater for alarm equipment, characterized in that it is equipped with a bypass circuit using a third photocoupler.