JPS6249499A - Alarm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an alarm device provided in each room of an apartment complex, for example.

[Technical background of the invention]

In general, in apartment complexes consisting of many rooms (dwelling units) such as condominiums, alarm devices are installed in each room to detect any abnormalities such as fire, gas leak, emergency, etc. Some devices are designed to generate an alarm sound from the installed door intercom to notify the manager of an abnormality.

An example of such an alarm device is shown in FIG.

In FIG. 2, reference numeral 1 denotes abnormality detection means, such as a fire sensor, which detects a rise in temperature and smoke when a fire occurs in a room. Reference numeral 2 denotes an abnormality detection means, such as a gas leak sensor, which outputs a voltage at a level corresponding to the gas concentration when a gas leak occurs in the room. 3
is an emergency push-button switch that turns on when pressed by a resident of the room.

The output voltage of a power source 5 is applied to the output terminal of the fire sensor 1 via a resistor 4, and the voltage generated at the output terminal of the fire sensor 1 is applied to a resistor 8 via an inverter circuit 6 and a diode 7 in series. . Further, the output of the gas leak sensor 2 is supplied to the non-inverting input terminal (+) of the comparator circuit 9. The inverting input terminal (-) of the comparison circuit 9 is connected to the interconnection point of the resistors 1o and ii, and the output voltage of the power supply 5 is applied to the series circuit of the resistors 10 and 11. The output voltage of the comparison circuit 9 is applied to the resistor 8 via the diode 12.

Furthermore, the output voltage of the N source 5 is applied to the output terminal of the emergency push button switch 3 via a resistor 13, and the voltage generated at the output terminal of the emergency push button switch 3 is applied via an inverter circuit 14 and a diode 15 in series. is applied to the resistor 8. The voltage developed across resistor 8 is thus supplied to the trigger terminal of analog switch 16.

On the other hand, 17 is an oscillation circuit, and the output signal of this oscillation circuit 17 is transmitted to the analog switch 16. The signal is supplied to a partial coil of a matching transformer 20 via an amplifier circuit 18 and a capacitor 19. In addition, 30 is a door intercom (hereinafter abbreviated as door intercom) installed on the outside of the entrance door, etc., and has a speaker 32 connected to the secondary coil of a transformer 31. The output voltage of the power source 5 is applied via the secondary coil of the switching transformer 20.

Therefore, when a fire occurs in a room, the fire sensor 1
The output terminal voltage of the analog switch 16 becomes low level, and the analog switch 16
turns on. When the analog switch 16 is turned on, the output signal of the oscillation circuit 17 is amplified by the amplifier circuit 18 and flows through a part of the coil of the matching transformer 20. Then, electricity 1
When the current from 1!5 flows through the secondary coil of the matching transformer 20, it becomes a high frequency current, which is supplied to the speaker 32 of the door phone 30. In this way, an alarm sound is generated from the speaker 32, and the manager is notified that an abnormality has occurred in the room.

When a gas leak occurs in a room, the gas leak sensor 2 outputs a voltage at a level corresponding to the gas concentration. At this time, the output voltage of the gas leak sensor 2 is the resistance "+o, i
When the voltage becomes higher than the voltage generated at the interconnection point of i, the output voltage of the comparator circuit 9 becomes a high level, and the analog switch 1
6 turns on.

When the analog switch 16 is turned on, an alarm sound is generated from the doorbell 30 in the same way as when a fire occurs, and the manager is notified that an abnormality has occurred in the room.

For example, when a thief breaks into a room and the resident presses the emergency push button switch 3, the voltage generated at the output terminal of the emergency push button switch 3 becomes low level, and the analog switch 16 is turned on. When the analog switch 16 is turned on,
An alarm sound is generated from the doorbell 30, and the manager is notified that an abnormality has occurred in the room.

[Problems with background technology]

However, in such an alarm device, even if the alarm sounds once, if the amount of smoke decreases, the gas concentration decreases, or the pressing operation of the emergency push button switch 3 is released, At the same time, the alarm sound is canceled. As a result, even if a manager heard an alarm and rushed to the room, he or she might not be able to tell which room the alarm was coming from.

[Purpose of the invention]

This invention was made in view of the above circumstances,
The purpose is to provide a highly reliable alarm device that can reliably notify the occurrence of an abnormality even if the abnormality is resolved and the generation of the alarm stops.

[Summary of the invention]

The present invention provides an alarm device that includes an abnormality detection means for detecting an abnormality in a room, and that emits an alarm sound from a door intercom when the abnormality detection means detects an abnormality, and when the abnormality detection means detects an abnormality, it stores information to that effect. The door intercom is further provided with a storage means for storing information, and a display means responsive to the contents of the storage means.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. However, in the drawings, the same parts as in FIG. 2 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

As shown in FIG. 1, in the door phone 30, a series circuit of a resistor 33 and a call button switch (normally open contact of automatic reset type) 34 is connected in parallel to a part of the coil of a transformer 31, and a display device such as a light emitting device is connected in parallel. A diode 35 is provided. Then, NPN is connected to both ends of the light emitting diode 35.
The output voltage of the power supply 5 is applied between the collector and emitter of the type transistor 50.

On the other hand, 40 is a D-type latch circuit 4 which is a storage means.
0, and the output voltage of the power supply 5 is supplied to the D input terminal. D
The clock input *cp of the type latch circuit 40 is supplied with the cathode voltage of the diode 7, 12, 15 through a differentiating circuit consisting of 5 capacitors and a resistor 52. The output voltage of the power supply 5 is supplied to the clear input terminal CL of the D-type latch circuit 40 via a differentiating circuit consisting of a capacitor 53 and a resistor 54. The Q output terminal of the D-type latch circuit 4o is grounded through a series circuit of resistors 55 and 56.
．． The voltage developed at the interconnection point of transistor 5 is
It is applied between the base and emitter of 0. Furthermore, the output voltage of the power supply 5 is supplied to the clear terminal CL of the D-type latch circuit 40 via a resistor 57 and a diode 58 in series. The interconnection point between resistor 57 and diode 58 is NPN.
A type transistor 59 is grounded between its collector and emitter. Then, the output voltage of the power supply 5 is applied to the resistor 61 via the secondary coil of the matching transformer 20 and the resistor 60 in series, and the voltage generated at the resistor 61 is applied between the base and emitter of the transistor 59. .

Next, the operation in the above configuration will be explained.

Now, when a fire breaks out in a room, the output @ voltage of the fire sensor 1 becomes a low level. Then, the output voltage of the inverter circuit 6 becomes high level, and the analog switch 16 is turned on. When the analog switch 16 is turned on, the output signal of the oscillation circuit 17 is amplified by the amplifier circuit 18 and flows through a part of the coil of the matching transformer 20. Then, when the current from the power source 5 flows through the secondary coil of the matching transformer 20, it becomes a high frequency current, which is supplied to the speaker 32 of the door phone 30. In this way, an alarm sound is generated from the speaker 32, and the manager is notified that an abnormality has occurred in the room. In this case, the transistor 59 connected to the secondary coil of the matching transformer 20 is turned on, so that the input to the clear terminal CL of the D-type latch circuit 40 becomes a logic "o" signal.

At this time, the output voltage of the inverter circuit 6 becomes high level, and at the same time, the logic u
1 II times the signal is supplied, so that the Q output of the D-type latch circuit becomes logic ii I n. Then, the transistor 50 is turned on, and the light emitting diode 35 of the door phone 30 is turned on.
lights up.

Here, when the fire subsides or the amount of smoke decreases and the fire sensor 1 is restored, the analog switch 16 is turned off and the alarm sound is canceled, but the D-type latch circuit 4
The light emitting diode 35 remains lit because the 0 Q output maintains the logic II 1 I+ state.

Therefore, even if the alarm sound is canceled, the manager who hears the alarm sound can easily and reliably confirm in which room the abnormality has occurred by lighting the light emitting diode 35. Here, when the manager confirms that an abnormality has occurred and presses the call button switch 34 of the door phone 30, the transistor 59 is turned off, and the clear terminal C of the D-type latch circuit 40 is turned off.
Logic 111 I+ times signal is input to L. Then, the Q output of the D-type latch circuit 40 becomes logic 110 II, and the light emitting diode 35 turns off.

Further, a similar operation is performed when a gas leak occurs or when the emergency push button switch 3 is pressed.

In this way, when an abnormality occurs, an alarm sound is generated and the light emitting diode 35 is turned on, and at the same time, the fact that an abnormality has occurred is stored in the D-type latch circuit 40, and this D-type latch circuit 40 memorizes the occurrence of the abnormality. Light emitting diode 3 while
Since the lighting state No. 5 is continued, even if the abnormality is canceled and the alarm sound stops generating, the manager can easily and reliably confirm in which room the abnormality has occurred. Therefore, it is possible to quickly and reliably avoid the spread of damage due to the occurrence of an abnormality, and it is safe.

In the above embodiment, a light emitting diode was used as the display means, but a lamp, a character display, etc. may also be used. Moreover, although the light emitting diode 35 is made to light up continuously when an abnormality occurs, it is more convenient to make the light emitting diode 35 blink by using the output of the oscillation circuit 17, since it will be easier for the manager to confirm the situation.

(Effects of the Invention) As described above, according to the present invention, even if the abnormality is canceled and the alarm sound stops generating, the alarm device is highly reliable and can reliably notify the occurrence of an abnormality. can be provided.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of a control circuit in an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a control circuit of a conventional alarm device. 1...Fire sensor (abnormality detection means), 2...Gas leak sensor (abnormality detection means), 3...Emergency push button switch, 30...Door intercom, 32...Speaker, 35...・Light emitting diode (display means), 40...
D-type latch circuit (memory means).

Claims (1)

[Claims] An alarm device comprising an abnormality detecting means for detecting an abnormality in a room, and emitting an alarm sound from a door intercom when the abnormality detecting means detects an abnormality, further comprising a storage means for storing information to that effect when the abnormality detecting means detects an abnormality. An alarm device characterized in that the door intercom is further provided with display means that responds to the contents of the storage means.