JPH10105857A - Fire alarm receiver for apartment common part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire alarm receiver for apartment common part, which can discriminate the connection state of an acoustic line with a simple constitution by detecting the return of an acoustic signal outputted to the acoustic line when a fire sensor emits an alarm. SOLUTION: An external alarm output part 3 outputting alarm signal to the acoustic line Lsp and an acoustic line conduction detection part 4 which is connected to the terminating part of the acoustic line Lsp by a signal line Lspb and detects the connection state of the acoustic line Lsp are provided. The acoustic line conduction detection part 4 detects the alarm signal returned through the signal line Lspb and discriminates the connection state of the acoustic line Lsp when the fire sensor S connected to a sensor line Ls emits the alarm and the external alarm output part 3 outputs the alarm signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic fire alarm system for a large-scale apartment house, and more particularly to a fire receiver for a common area of an apartment house installed in a common area such as a corridor or a staircase.

[0002]

2. Description of the Related Art Recently, an automatic fire alarm system suitable for an apartment house of this type has been developed in accordance with an increase in the height and scale of the apartment house. FIG. 3 shows a system configuration diagram of the automatic fire alarm system. In a large-scale apartment house, a housing ridge receiver B is installed at a disaster prevention center, etc., and a housing information panel D of each dwelling unit, and a fire receiver A for a common area of an apartment house installed in a common area such as a corridor or stairs. (Hereinafter, "Common part receiver"
The alarm unit G installed in a common room such as a meeting room is connected to perform fire monitoring and fire notification in each space.

The common unit receiver A is connected to a detector line Ls to which a fire detector S is connected and an acoustic line Lsp to which an external audio device SP1 (an additional speaker) is connected. Is issued, a fire alarm is output from the external sound device SP1 by a voice message or the like. Further, the house information panel D of each dwelling unit is connected to a dwelling unit receiver B via a repeater E with a test terminal installed at the entrance of each dwelling unit. In addition to connecting the sensor line Ls to detect the fire of the house, an outdoor indicator F installed at the entrance or the like is connected to each house information panel D to perform an alarm output and an intercom function. ing.

Further, the alarm unit G in the common room is provided with a repeater E with a test terminal, a sensor line Ls, and an outdoor indicator F, similarly to the housing information panel D in each dwelling unit. The remote tester C is also connected to the receiver A for the common use unit and the repeater E with test terminal in each dwelling unit and the common room to perform the operation test. In addition, each housing information panel D is also connected to an alarm monitoring panel H installed in a management room or the like,
The monitoring status of each dwelling unit can be centrally managed,
The backup power supply device I provided in the ward receiver B allows the power to be backed up even in the event of a power failure.

[0005] FIG. 4 is a block diagram showing only the configuration of the common unit receiver A in the automatic fire alarm system. The common unit receiver A includes a detector line Ls (LC) to which the fire detector S is connected, and an external sound device SP1.
Is connected to the acoustic line Lsp (SP-SPC), and the living building receiver B is connected via a signal line Lab. Further, by connecting the terminal J1 to the test terminal J, an operation test using the remote tester C can be performed.

In the figure, 101 is an information processing circuit composed of a CPU or the like, 102 is a display operation section composed of a liquid crystal screen or a display lamp and various switches, and 103 is an external audio device SP1 or an internal audio device SP2 ( An acoustic alarm circuit for outputting a fire alarm as a voice message or the like from a built-in speaker, 104 is a sensor line (JL-
JC) A fire transfer circuit that outputs a fire notification signal to the living building receiver B via the JC). 105 is an alarm control receiving circuit that receives an alarm control signal from the living building receiver B via the local bell line (B-BC). The circuit 106 is composed of a receiver B and a signal line Lab (T-
A telephone terminal for connecting a telephone to make a telephone call via TC), 107 is a fire alarm for the fire detector S and a detector line Ls
Is a fire / disconnection detection circuit for detecting disconnection, 108 is a during-test detection circuit for detecting the connection of the remote tester C, and 109 is a power supply circuit.

The basic operation of this system will be described. If any one of the fire detectors S connected to the detector line Ls issues an alarm, the fire / disconnection detection circuit 107 detects this. Then, the fire alarm lamp (not shown) of the display operation unit 102 is turned on or blinked by the sound alarm circuit 103, and the first fire alarm is output from the internal sound device SP2 by an alarm or a voice message. The first fire alarm notifies the operation of the fire detector S and urges the dwellers to confirm whether or not a fire has occurred. For example, "Fire detector S has been activated. Please output a message like "Please."

The first fire alarm is output continuously for a predetermined time (for example, 5 minutes). If the display operation unit 102 is operated to stop the notification within the predetermined time, the alarm output is output. If the operation is stopped but a predetermined time has passed without any operation, the fire transfer circuit 104 sends a signal to the sensor line (JL-J
Via C), a fire alarm signal is output to the living building receiver B.

On the other hand, when the fire signal is received by the living building receiver B, it is set in advance as a nearby notification destination on the same floor, directly above the floor, etc. as the common use receiver A that has output the fire notification signal. An alarm control signal is output to the housing information panel D of the dwelling unit, the alarm unit G, and the like via the district bell line (B-BC). The common unit receiver A outputs the second fire alarm from the external sound device SP1 by the audio alarm circuit 103, and also outputs the house information panel D of a neighboring dwelling unit that has received the alarm control signal from the living room receiver B. Issue a second fire alarm. Here, the second fire alarm is for notifying the occurrence of a real fire, and asking the resident to evacuate and take measures, for example, "It is a fire. It is a fire. Occurred. Please confirm your safety before evacuating. " In addition, on the house information panel D, it is possible to display the occurrence of a fire on the outdoor indicator 2 and to output a voice message of a second fire alarm.

Although the basic operation when a real fire has occurred has been described above, in such a fire alarm system,
An operation test with the remote tester C connected can be performed. Next, the operation will be described. When the remote tester C is connected to the connection terminal J and the power switch (not shown) is operated, the relay RT is activated, the contact rt is closed, and the detection circuit 1 during the test is operated.
08 indicates that the test is in progress. Thereafter, the contact rt1 is switched, and the connection of the sensor line Ls is switched from the fire / disconnection detection circuit 107 to the remote tester C side. At this time, since the common unit receiver A detects that the test is being performed, the output of the abnormal alarm due to the disconnection of the sensor line Ls is prohibited.

In this state, if various switches of the remote tester C are operated, each test of the fire detector S operation test, the common unit receiver A operation test, and the living room receiver B interlocking test is performed. Can be implemented.

[0012]

As described above, in the conventional fire receiver for the common use of the common apartment, the fire detector connected to the fire alarm emits an alarm and confirms that an actual fire has occurred, When a fire occurs in a dwelling unit and an alarm control signal is received from the dwelling receiver B, an alarm is output by a voice message or a siren from an external audio device connected to an audio line.

However, since this fire receiver does not have a function of detecting disconnection or short circuit of the sound line, if a real fire occurs while the sound line is abnormal, the external sound device does not operate, and the dwelling unit does not operate. It was thought that evacuation was delayed. In view of this, the present applicant has proposed, in Japanese Patent Application No. Hei 8-9737, a fire receiver in which the continuity of an acoustic line can be confirmed by returning a test alarm signal output from an external audio output unit. However, this fire receiver performs a continuity test irrespective of the fire detector's alarm, and must output a test alarm signal periodically or by operating a switch. Was complicated.

The present invention has been made in view of the above circumstances, and detects a reply of an alarm signal output to an acoustic line when a fire detector emits an alarm, thereby achieving a simple configuration of the acoustic line. It is an object of the present invention to provide a fire receiver for a common area of a common house in which a connection state can be determined.

[0015]

Means for Solving the Problems In order to achieve the above object, a fire receiver for a shared apartment common area according to the present invention is provided with the following means. According to claim 1, an external alarm output unit that outputs an alarm signal to the audio line, and an audio line continuity detection unit that is connected via a signal line to a terminal end of the audio line and detects a connection state of the audio line, The sound line continuity detection unit detects an alarm signal returned via the signal line when the fire detector connected to the detector line issues an alarm and the external alarm output unit outputs an alarm signal, The connection state of the audio line is determined.

Here, an extension of the acoustic line may be used for the signal line connecting the terminal of the acoustic line and the acoustic line continuity detecting unit. That is, the acoustic line is derived from the external alarm output unit. After connecting one or a plurality of external sound devices, they may be connected to the sound line continuity detecting unit. According to claim 2, in claim 1, further comprising: an internal alarm output unit for outputting an alarm from the built-in audio device; and a display unit for displaying an operation state, wherein the acoustic line continuity detection unit outputs the external alarm output unit. When the alarm signal is not detected via the signal line, the internal alarm output unit is activated to output an alarm from the internal sound device and / or to display an abnormality on the display unit. I do.

According to a third aspect of the present invention, in the first or second aspect, there is further provided an acoustic line state discriminating and setting unit for setting validity or invalidity of the discrimination of the connection state of the acoustic line. It is characterized in that the determination of the connection state of the audio line is made valid or invalid according to the setting contents of the setting unit. Here, the acoustic line state determination setting unit is configured by a dip switch, a memory, and the like. If the setting content is set to “invalid”, it is possible to cope with a case where a signal line is not wired to the acoustic line conduction detection unit.

According to a fourth aspect, in any one of the first to third aspects, the external alarm output section outputs an alarm signal of a predetermined frequency when the power is turned on. Immediately after the wiring work, when the power is turned on by operating a power switch or the like, an alarm signal of a predetermined frequency is automatically output, and a continuity test of an acoustic line can be performed.

According to a fifth aspect, in the fourth aspect, a frequency setting unit for setting a frequency of an alarm signal output from the external alarm output unit is further provided. Therefore, if it is desired to activate the external audio device (sound the external speaker) at the same time as confirming the continuity of the audio line, set an audible frequency and operate the external audio device in order not to inconvenience dwellers and the like. If not, an inaudible frequency may be set.

According to a sixth aspect, in any one of the first to fifth aspects, the acoustic line continuity detecting unit does not detect the alarm signal output from the external alarm output unit via the signal line, and the acoustic line is in an abnormal state. When it is determined that there is, the state is maintained, and thereafter, when the alarm signal output by the external alarm output unit is detected, it is determined that the acoustic line is restored for the first time.

Thus, it is possible to automatically recover that the sound line is abnormal, and that the recovery has been confirmed.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a main part of a fire receiver for a common area of an apartment house (hereinafter, also referred to as a “receiver for a common area”). Here, only the portion related to the continuity test of the acoustic line Lsp to which the external acoustic device SP1 is connected is shown (see FIG. 4).

The common unit receiver A is connected to a detector line Ls to which a fire detector S is connected and an acoustic line Lsp to which an external audio device SP1 is connected.
The end of p is connected to a separately derived signal line Lspb. The signal line Lspb may be an extension of the acoustic line Lsp, that is, the signal line Lspb is derived from the terminal (SP-SPC), and after connecting the external audio device SP1, the terminal (S
PB-SPBC).

In FIG. 1, reference numeral 1 denotes an information processing circuit which is constituted by a CPU or the like and controls each unit. 2 denotes a fire detection unit which detects an alarm from the fire detector S from the detector line Ls.
An external alarm output unit 4 for outputting an alarm signal to the sp is connected to a terminal of the acoustic line Lsp via a signal line Lspb,
An acoustic line continuity detecting unit for detecting the connection state of the acoustic line Lsp, an internal alarm output unit 5 for outputting an alarm from the built-in audio device SP2, and an acoustic line 6 for setting the validity / invalidity of the connection state determination of the acoustic line Lsp. A state determination setting section 7 is a frequency setting section 7 and 8 for setting a frequency of an alarm signal output from the external alarm output section 3. A power switch operated to turn on the power is provided. 9 is a liquid crystal screen, an LED, and an abnormality indicator light. It is a display unit composed of the above.

In such a configuration, the detector line Ls
When the fire detector S connected to the device issues an alarm and the fire detector 2 detects this, the information processing circuit 1 displays a fire alarm on the display unit 9, and the internal alarm output unit 5 outputs the fire alarm from the built-in alarm device SP 2. When the fire detector S outputs an alert by voice message or the like, and when the sound stop switch (not shown) is not operated and the occurrence of a fire is confirmed, an alarm signal is output from the external alarm output unit 3. Activate the external sound device SP1 connected to the sound line Lsp to guide evacuation of dwellers and the like.

The acoustic line continuity detecting section 4 detects the return of the alarm signal via the signal line Lspb,
It is determined that the connection state of p is normal, and if it cannot be detected within a predetermined time, it is determined that a short circuit has occurred due to disconnection or a change in voltage value. As described above, when the acoustic line continuity detecting unit 4 does not detect an alarm signal, an abnormal display on the display unit 9 (for example, lighting or blinking of an abnormal indicator lamp, displaying an abnormal message, and the like), and / or The abnormal sound output from the built-in sound device SP2 via the internal alarm output unit 5 (for example, a voice message such as "A sound line has an abnormality", an alarm, a siren, or the like) causes the sound line Lsp to be output.
To report abnormalities.

In addition to the alarm from the actual fire, the alarm from the fire detector S may be a test alarm when a remote tester is connected, or the alarm from the fire detector S in a nearby dwelling unit. This includes the case where an alarm control signal is received from the receiver unit. The basic operation is shown in a time chart in FIGS.
Here, a case is shown in which, when the fire detector S issues a warning, an external alarm is output immediately. At the same time, an internal alarm is output and a fire display is made. After outputting the alarm signal to the acoustic line Lsp, a predetermined time t (for example, several tens m
During the period s), if the acoustic line continuity detecting unit 4 does not receive the return of the alarm signal, the internal alarm output and display of the acoustic line abnormality are performed.

Here, an example has been shown in which the internal alarm and display are switched when an abnormality is detected in the sound line.
However, the present invention is not limited to this. For example, voice messages may be alternately output or different indicator lights may be turned on so that both a fire alarm and an abnormal sound line can be recognized. When detecting an abnormality in the acoustic line Lsp, the acoustic line continuity detecting unit 4 refers to the setting content of the acoustic line state determination setting unit 6 and, according to the setting, determines whether the acoustic line connection state is valid or invalid. Can be disabled.

That is, if "valid" is set, the operation is performed in accordance with the determination of the connection state as described above, but if "invalid" is set, for example, the alarm signal is set within a predetermined time t. Is not detected, the sound line Lsp
Is not determined, or is invalidated even if determined. Accordingly, even if the signal line Lspb is not wired to the acoustic line continuity detecting unit 4 depending on the installation location, an internal alarm output or display of an acoustic line abnormality is not performed.

The external alarm output unit 3 can output an alarm signal even when the power is turned on. At this time, the output alarm signal is composed of a predetermined frequency, and this frequency is set to an inaudible frequency (for example, 2
If the frequency is set to 0 kHz or more, the signal output from the external audio device SP1 is not audible to humans, and is not particularly troublesome to dwellers and the like, which is particularly effective when it is desired to check conduction in the early morning or on holidays.

Further, the frequency set in the frequency setting section 7 can be used. The frequency setting unit 7 has an operation guarantee range of 1 Hz, which is an amplifier (not shown).
It is composed of a dip switch, a volume switch, and the like, which can be set to a range from 100 KHz to 100 KHz. It is possible to easily set an arbitrary frequency and check the continuity of the acoustic line Lsp.

Next, the recovery of the fire receiver A will be described. The fire receiver A includes an acoustic line continuity detector 4
Changes the alarm signal output from the external alarm output unit 3 to a signal line Ls.
When it is determined that the acoustic line Lsp is in an abnormal state without being detected via the pb, this state is maintained. Therefore, in order to recover this abnormal state, it is assumed that an alarm signal is output again from the external alarm output unit 3 and the acoustic line Lsp is restored for the first time when the acoustic line continuity detecting unit 4 detects this reply. . That is, at this time, the display of the sound line abnormality display on the display unit 9 is performed.

The output of the alarm signal from the external alarm output unit 3 is performed when the power is turned on again, when a fire test is performed by operating a switch or the like, when the live-line construction of the acoustic line Lsp is completed, There are a case where the burning test is directly performed on the fire detector S and a case where the fire detector S issues an alarm due to a real fire. As described above, in the fire receiver A of the present invention, if it can be confirmed that the cause of the abnormality has been recovered, the fire receiver A itself can automatically recover its operation. On the other hand, until the state of the sound line Lsp is restored, the abnormal display and the like are held, so that the manager or the like can use the sound line Ls
Abnormality of p is not overlooked, and it can be easily confirmed that it has been restored.

[0034]

As can be understood from the above description, the fire receiver for the common use apartment according to the present invention has the following effects. According to the first aspect, if the end of the acoustic line is configured to be connected to the acoustic line continuity detection unit via the signal line, the fire detector issues a warning in a test or a real fire, and the external alarm output unit outputs the fire alarm. When the alarm signal is output, the return of this signal is detected by the acoustic line continuity detection unit,
At the same time as the fire alarm is output, the wiring status of the sound circuit can be checked. Thus, the continuity test of the acoustic circuit
Since it is not necessary to use a test alarm signal as in the related art, the configuration is simplified.

According to the second aspect, when the acoustic line continuity detecting unit detects an abnormality in the acoustic line, this is notified by an alarm output from the built-in acoustic device or an abnormality display on the display unit. It can be easily done, and the inspection and construction of the sound line can be performed immediately. According to the third aspect, if the setting is made in the acoustic line state determination setting section, the acoustic line continuity detecting section can enable or disable the determination of the connection state of the acoustic line in accordance with the setting contents. Therefore, if the setting content is set to “invalid”, even if the signal line is not wired to the acoustic line continuity detecting unit, it is not possible to notify the abnormality of the acoustic line.

According to claim 4, immediately after the wiring work, etc.,
When the power is turned on, an alarm signal of a predetermined frequency is automatically output and a continuity test of the acoustic line can be performed, so that workability and maintainability can be improved. According to the fifth aspect, since the frequency of the alarm signal output from the external alarm output unit can be set freely,
If you want to check the external alarm sound, set the audible frequency,
In order not to inconvenience dwellers and the like, if an external alarm is not output, an inaudible frequency may be set.

According to the present invention, when an abnormality is detected in the audio line, this state is maintained, and thereafter, when an alarm signal is detected through the audio line, it is determined that the audio line has been restored for the first time. As a result, the fire receiver can be automatically recovered, and the recovery can be accurately determined.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a main configuration of a fire receiver for a shared apartment common area according to the present invention.

FIG. 2 is a time chart showing an example of a basic operation of the fire receiver for a shared apartment common area of the present invention.

FIG. 3 is a configuration diagram of an automatic fire alarm system provided with a fire receiver for a shared apartment common area.

FIG. 4 is a block diagram showing an example of an internal configuration of a fire receiver for a shared apartment common area.

[Explanation of symbols]

 A: Fire receiver for common area of common housing Lsp: Sound line SP1: External sound device Lspb: Signal line SP2: Built-in sound device Ls: Detector line S: Fire Detector 1 ・ ・ ・ Information processing circuit 2 ・ ・ ・ Fire detection unit 3 ・ ・ ・ External alarm output unit 4 ・ ・ ・ Audio line continuity detection unit 5 ・ ・ ・ Internal alarm output unit 6 ・ ・ ・ Audio line state determination setting Unit 7 Frequency setting unit 8 Power switch 9 Display unit

Claims (6)

[Claims] 1. A fire alarm system installed in a common area such as a corridor or stairs of an apartment house, which connects a fire detector to a sound line connected to an external sound device, and is installed in a disaster prevention center or the like. The fire alarm for a common area of a common house connected to the receiver of the living building, an external alarm output unit for outputting an alarm signal to the acoustic line, and a terminal connected to the terminal of the acoustic line via a signal line, An acoustic line continuity detecting unit that detects a connection state of the line, wherein the acoustic line continuity detecting unit emits an alarm from a fire detector connected to the sensor line, and the external alarm output unit outputs an alarm signal. A fire receiver for a common area of a shared apartment, wherein an alarm signal returned via the signal line is detected when the signal is received, and the connection state of the acoustic line is determined. 2. An apparatus according to claim 1, further comprising: an internal alarm output unit for outputting an alarm from a built-in audio device; and a display unit for displaying an operation state. If the output alarm signal is not detected via the signal line, the internal alarm output section is activated to output an alarm from the internal sound device, and / or to display an abnormal display on the display section. A fire receiver for a common area of an apartment complex. 3. The audio line state determination unit according to claim 1, further comprising: an audio line state determination setting unit configured to set whether to determine whether the audio line is connected or not. A fire receiver for a shared apartment common area, wherein the determination of the connection state of the acoustic line is enabled or disabled according to the setting contents of a setting unit. 4. The shared housing common use unit according to claim 1, wherein the external alarm output unit outputs an alarm signal of a predetermined frequency when the power is turned on. For fire receiver. 5. The fire receiver according to claim 4, further comprising a frequency setting unit for setting a frequency of an alarm signal output from the external alarm output unit. 6. The acoustic line continuity detecting unit according to claim 1, wherein the acoustic line continuity detecting unit does not detect an alarm signal output by the external alarm output unit via the signal line, and the acoustic line is in an abnormal state. This state is maintained when it is determined that the above condition is satisfied, and thereafter, when an alarm signal output from the external alarm output unit is detected, it is firstly determined that the sound circuit has been restored, Club fire receiver.