JP3810314B2 - Alarm device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an alarm device using on-site wired broadcasting equipment such as school broadcasting equipment installed in school facilities such as elementary and junior high schools.
[0002]
[Prior art]
In recent years, there has been a painful case in which a suspicious person invades an outside classroom into a classroom where classes are held and kills teachers and students. When such an incident occurs in the future, the teachers in the classroom The actual situation is that students can run to nearby classrooms or staff rooms for help, or operate a fire alarm installed nearby to notify the incident.
[0003]
On the other hand, Japanese Patent Application Laid-Open No. 55-117345 discloses an emergency broadcasting device used to inform people in a building when an emergency such as a fire occurs, and to guide evacuation safely. .
[0004]
[Problems to be solved by the invention]
When a suspicious person who has entered the classroom from the outside is likely to cause harm to the student, etc., or when a teacher in the classroom shouts and asks for help, he immediately asks a teacher in another classroom Not only is it transmitted, but if the teacher leaves the classroom in order to notify the occurrence of the incident, there will be no one who suppresses the suspicious person's actions, and the incident may be further expanded.
[0005]
On the other hand, students in the classroom where the incident occurred may become unable to move as they fear with fear of the suspicious person or may not be able to accurately communicate the situation of the incident, so the student runs into a nearby classroom or staff room It is actually difficult to take action to inform the occurrence of an incident. In particular, if a suspicious person enters a classroom in a lower grade, such as a case of killing in an elementary school that occurred in recent years, it seems that young students will be unable to deal with anything.
[0006]
Therefore, there is also a method in which when a suspicious person enters from outside, a teacher or student operates a nearby fire alarm to notify the surroundings of the incident, but if the fire alarm is operated, an emergency bell will ring around the area. Because there are many, there is a risk that the suspicious person goes upside down and the damage spreads, and students in nearby classrooms may panic.
[0007]
The emergency broadcasting device disclosed in Japanese Patent Application Laid-Open No. Sho 55-117345 uses commercial broadcasting equipment installed in a multi-storey building or the like, and an emergency such as a fire occurs in this building However, there is no function to transmit the emergency that occurred in one place in the building to other places. When it occurs, it cannot be used to deal with it properly.
[0008]
In this way, teachers and students in the classroom cannot respond appropriately if a suspicious person enters the classroom while the class is taking place and causes an incident or a risk of an incident. This is the actual situation.
[0009]
The problem to be solved by the present invention is that when a suspicious person enters a classroom during a class or an incident occurs, an alarm that can identify the place and promptly take appropriate action To provide an apparatus.
[0010]
[Means for Solving the Problems]
An alarm device according to the present invention includes a broadcasting device including a microphone, an amplifier that amplifies the signal of the microphone, and an input transformer in which an output signal of the amplifier is input to a primary winding and a signal is induced to a secondary winding. , A local wired broadcast facility comprising loudspeakers installed at a plurality of locations, and a pair of electrical wirings connecting the secondary winding output of the input transformer of the broadcast device and each of the loudspeakers, A DC power source for generating a DC voltage is provided at both ends of the secondary winding of the input transformer, and between one line of the secondary winding of the input transformer and the output terminal to the electrical wiring. A parallel circuit of a first capacitor for AC path and a first relay is connected, and a second capacitor for blocking DC is connected between one line of the pair of electrical wirings and a loudspeaker, Loudspeaker and second capacitor In parallel with the series circuit, an alarm switch that is manually closed is provided, and a second relay, a normally open contact of the first relay, and a normally open contact of the second relay are provided on both ends of the input transformer. A parallel circuit and a series circuit of a reset switch, and when the normally open contact of the second relay corresponding to each of the loudspeakers is closed at the installation location of the broadcasting device, An alarm lamp installed corresponding to each loudspeaker and an alarm device that emits an alarm sound when a second relay corresponding to any of the loudspeakers is closed are provided. .
[0011]
By adopting such a configuration, it can be used as a normal on-site cable broadcasting facility in normal times, and when an incident occurs at any of multiple locations where loudspeakers are installed, If the alarm switch is manually operated, the alarm device installed at the installation location of the broadcasting device will emit an audible alarm and the warning light will be displayed to identify the location where the alarm switch was operated. Those who are in can know the fact that the incident occurred and the place where the incident occurred, and can then take prompt and appropriate action.
[0012]
The alarm device of the present invention is constructed using general school broadcasting equipment comprising broadcasting equipment installed in a broadcasting room such as a school facility, loudspeakers arranged in each classroom, and electrical wiring connecting them. Can do. That is, the alarm switch is provided in each classroom in which a loudspeaker is installed, the alarm device and the alarm light are provided in a broadcasting room in which broadcasting equipment is arranged, and these are installed using existing school broadcasting electrical wiring. Since it can be constructed by connecting, it is relatively easy to introduce to school facilities.
[0013]
If the alarm device of the present invention is constructed using the broadcasting equipment installed in the school facility or the like in this way, if a suspicious person enters the classroom in the class or some incident occurs, When someone in the broadcast room operates the alarm switch, the alarm device in the broadcast room emits an audible alarm, and the warning light indicates where the alarm switch was operated. And it is possible to know the place where the incident occurred and to take prompt and appropriate action.
[0014]
The place where the alarm device and the warning light are installed is not limited to one place such as a broadcasting room where broadcasting equipment is installed, so the alarm device and the warning light are installed in other places, If it is connected to the electrical wiring, it becomes possible to notify the occurrence of the incident and the location of the incident to a plurality of places, so that a quicker and more reliable response can be achieved.
[0015]
Here, when the alarm switch is operated, the sound input to the loudspeaker is converted into an electrical signal, transmitted to the broadcasting device via the electrical wiring, and the loudspeaker disposed at the installation location of the broadcasting device. It is desirable to provide a reverse transmission function for outputting as a voice from. If such a reverse transmission function is provided, the person in the place where the incident occurred speaks to the loudspeaker to ask the person in the vicinity of the broadcasting equipment for help, or convey the specific situation in words. This makes it possible to take further appropriate measures.
[0016]
In addition, even if the person at the incident location cannot speak, the voice generated at the incident location can be intercepted through a loudspeaker by the person near the broadcasting equipment. It is possible to accurately grasp the situation and take appropriate measures. Furthermore, if you install a device that records the signal sent to the broadcasting equipment by the reverse transmission function, it is possible to record the incident situation by voice, so it can be used effectively as subsequent investigation materials, evidence, etc. .
[0017]
DETAILED DESCRIPTION OF THE INVENTION
1 is a block diagram showing an alarm device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a circuit configuration of the alarm device shown in FIG. 1, and FIG. 3 is a part of the circuit configuration of the alarm device shown in FIG. It is an electrical circuit diagram omitted and shown.
[0018]
As shown in FIG. 1, the alarm device of the present embodiment includes a broadcasting device such as a microphone 11 and an amplifier 12 installed in a school broadcasting room 10, and a plurality of classrooms K1, K2, K3, K4, K5,. .. constructed using general school broadcasting facilities comprising loudspeakers 6 arranged in each of the above and electrical wiring 7 connecting them.
[0019]
That is, the alarm switch 9 for transmitting an emergency signal to the broadcasting room 10 via the electric wiring 7 by manual operation to each classroom K1, K2, K3, K4, K5,. And a plurality of warning lights L1, L2, L3 for identifying and displaying the classroom in which the alarm switch 9 is operated based on the emergency signal, and an alarm device 8 that emits an alarm sound based on the emergency signal. An alarm display device 13 having L4, L5,... Is provided in the broadcast room 10, and these devices are connected by using an existing school wiring electric wiring 7. A plurality of warning lights L1, L2, L3, L4, L5,... Provided in the alarm display device 13 and a plurality of classrooms K1, K2, K3, K4, K5,. The alarm display device 13 is connected to an amplifier 14, and the amplifier 14 is connected to a monitor speaker 15 and a recorder 16.
[0020]
Here, with reference to FIG. 2 and FIG. 3, the circuit structure of the alarm device of this embodiment is demonstrated. FIG. 2 shows an overall circuit configuration, and FIG. 3 shows a circuit configuration relating to the classroom K1 and the broadcast room 10 as representative examples.
[0021]
When constructing the alarm device, as shown in FIG. 2, the electric wiring 7 connecting the loudspeakers 6 installed in the classrooms K1, K2, K3, K4, K5,. The alarm switch 9 is connected, and the wiring in the classroom K1 at this time is like a circuit 22 in FIG. Such circuits 22 are also formed in the other classrooms K2, K3, K4, K5,.
[0022]
On the other hand, in the broadcast room 10, as shown in FIG. 2, the existing electrical wiring 7 connecting the amplifier 12 for the microphone 11 and the classrooms K1, K2, K3, K4, K5,. Between these, wiring is made such that an electric circuit 20 composed of an input transformer and a power supply unit, and classrooms K1, K2, K3, K4, K5,. A reset switch 17 for resetting these relays 18 is provided. Actually, an electric circuit 23 and an electric circuit 21 as shown in FIG. 3 are connected to the alarm display device 13, and the relay 18 and the reset switch 17 described above are incorporated in the electric circuit 21. .
[0023]
As described above, the electric circuit 22 is formed in the classrooms K1, K2, K3, K4, K5,..., And the electric circuit shown in the area surrounded by the broken line X with respect to the existing broadcasting equipment in the broadcasting room 10. And the alarm device can be constructed by newly incorporating various electric devices.
[0024]
The alarm device according to the present embodiment uses a broadcasting device such as the microphone 11 in the broadcasting room 10 during normal times, and transmits audio signals to the loudspeakers 6 arranged in the classrooms K1, K2, K3, K4, K5. Can be transmitted, and can be used as conventional school broadcasting equipment.
[0025]
If an incident occurs in any of the classrooms K1, K2, K3, K4, K5,..., If the alarm switch 9 near the loudspeaker 6 is manually operated, the broadcasting room 10 The alarm device 8 provided in the inside emits an audible alarm, and specifies the classroom K1, K2, K3, K4, K5... , L2, L3, L4, L5,... Illuminate, so that the person in the place where the warning display device 13 is located can know the incident occurrence and the incident occurrence place, and then promptly and appropriately respond Can be achieved.
[0026]
When the alarm switch 9 is pressed, the loudspeaker 6 functions as a microphone, so that the voice input to the loudspeaker 6 in the classroom is amplified by the amplifier 14 and can be heard as voice from the monitor speaker 15. Recording with the recorder 16 is also possible. By such a reverse transmission function, a person in the place where the incident occurred speaks to the loudspeaker 6 to ask a person in the broadcasting room 10 for help, or to convey a specific situation in words. Therefore, more appropriate measures can be taken.
[0027]
In addition, even when the person at the incident location is in a situation where words cannot be spoken, the voice generated at the incident location can be intercepted by the person in the broadcast room 10 through the monitor speaker 15. Accurately understand the incident status and take appropriate action. Furthermore, if the sound transmitted to the broadcast room 10 by the reverse transmission function is recorded by the recording device 16, the incident situation can be recorded, so that it can be effectively utilized as subsequent investigation materials, evidence, and the like.
[0028]
In the present embodiment, as shown in FIG. 1, the same equipment as the broadcast room 10 is arranged in the office room 19 located away from the broadcast room 10 and connected to the electrical wiring 7. Also in the room 19, information such as the occurrence of the incident and the location of the incident can be obtained.
[0029]
Here, the operation when the alarm switch 9 is operated will be described with reference to FIG. When the alarm switch 9 (SW-2) in the classroom is pressed, the relay A in the electric circuit 21 is activated, the contact A1 is closed, and at the same time the contact of B1 is closed, and the relay B is in an operating state. As a result, the contact B2 is activated, the alarm device 8 is activated, and the alarm lamp L1 and the like are lit. At this time, the contact B3 is activated and the loudspeaker 6 functions as a microphone, so that the reverse transmission function described above is exhibited.
[0030]
After operating the alarm switch 9 and starting the alarm device 8 etc., when the incident is solved and the reset switch 17 (SW-1) is pressed, the alarm device 8 is stopped, the alarm light L1 etc. is turned off, Since the contact B3 returns to the original state and the monitoring function by the monitor speaker 15 is stopped, the function as a normal school broadcasting facility is restored.
[0031]
【The invention's effect】
The present invention has the following effects.
[0032]
(1) Broadcast equipment including a microphone, an amplifier that amplifies the signal of the microphone, an input transformer in which an output signal of the amplifier is input to the primary side winding and a signal is induced to the secondary side winding, and a plurality of locations. A local wired broadcast facility comprising an installed loudspeaker, and a pair of electrical wirings connecting the secondary side winding output of the input transformer of the broadcasting device and each of the loudspeakers, wherein the input transformer A DC power source for generating a DC voltage is provided at both ends of the secondary winding, and an AC path is provided between one line of the secondary winding of the input transformer and the output terminal to the electrical wiring. A parallel circuit of a first capacitor and a first relay is installed, a second capacitor for blocking DC is connected between one line of the pair of electrical wirings and a loudspeaker, and the loudspeaker and the In a series circuit with a second capacitor An alarm switch that is manually closed is provided in a row, and a parallel circuit of a second relay, a normally open contact of the first relay, and a normally open contact of the second relay is provided on both ends of the input transformer. And a series circuit with a reset switch, and each loudspeaker that is lit when a normally open contact of the second relay corresponding to each loudspeaker is closed at a place where the broadcasting device is installed It can be used as broadcasting equipment in normal times by providing an alarm lamp installed corresponding to the above and an alarm device that emits an alarm sound when the second relay corresponding to any of the above loudspeakers is closed When an incident occurs, the alarm is activated by operating the alarm switch and the warning light is turned on, so that it is possible to immediately know the incident occurrence and its location, and to be able to respond promptly and appropriately. become. In addition, since it can be constructed using general school broadcasting facilities, it can be relatively easily introduced into school facilities.
[0033]
(2) When the alarm switch is operated, the sound input to the loudspeaker is converted into an electrical signal, transmitted to the broadcasting device via the electrical wiring, and output as the sound from the loudspeaker disposed at the installation location of the broadcasting device. because it has a reverse transmission function Ri Do can be transmitted in words the status of the incident occurrence site, it is possible to achieve a more appropriate response.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an alarm device according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a circuit configuration of the alarm device shown in FIG. 1;
FIG. 3 is an electric circuit diagram in which a part of the circuit configuration of the alarm device shown in FIG. 1 is omitted.
[Explanation of symbols]
K1, K2, K3, K4, K5 Classroom L1, L2, L3, L4, L5 Warning light 6 Loudspeaker 7 Electrical wiring 8 Alarm 9 Alarm switch 10 Broadcasting room 11 Microphone 12, 14 Amplifier 13 Alarm display device 15 Monitor speaker 16 Recorder 17 Reset switch 18 Relay 19 Office 20, 21, 22, 23 Electrical circuit

Claims (1)

Broadcast equipment including a microphone 11, an amplifier 12 for amplifying the signal of the microphone 11, an input transformer in which an output signal of the amplifier 12 is input to the primary winding and a signal is induced to the secondary winding, and a plurality of locations And a pair of electric wires 7 for connecting each of the loudspeakers 6 and a secondary winding output of an input transformer of the broadcasting equipment,
A DC power supply for generating a DC voltage is provided on both ends of the secondary winding of the input transformer.
Established a parallel circuit of the first capacitor C1 of the AC path from the first relay A between the output terminal and one of lines of the input transformer secondary winding to the electric wiring 7,
A second capacitor C2 for cutting off direct current is connected between one line of the pair of electrical wires and the loudspeaker 6;
In parallel with the series circuit of the loudspeaker 6 and the second capacitor C2, an alarm switch 9 for closing the manual operation and operating the first relay A by the DC power supply in an emergency is installed in the loudspeaker 6. In place ,
On the lines at both ends of the input transformer, a second relay B, a parallel circuit of a normally open contact A1 of the first relay A and a normally open contact B1 of the second relay B, and an alarm device 8 to be described later And a series circuit with a reset switch 17 that restores the function as the on-site wired broadcasting facility by turning off the warning lights L1, L2, L3,.
In the installation location of the broadcasting device, the second relay B corresponding to each loudspeaker 6 is installed corresponding to each loudspeaker 6 that is turned on when the normally open contact B2 of the second relay B is closed . The warning lights L1, L2, L3,... For identifying and displaying the location where the alarm switch 9 is operated in the emergency, and the second relay B corresponding to any of the loudspeakers 6 are closed. An alarm device characterized by comprising an alarm device (8) that emits an alarm sound when completed.

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