JP2001155266A - Fire receiver provided with voice warning function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire receiver provided with a voice warning function capable of improving the reliability of a system by detecting the disconnection of an emergency broadcasting line, and the omission of installing emergency broadcasting equipment from the line at an early stage. SOLUTION: The disconnection/short-circuit of emergency broadcasting lines L1 to Ln is judged by detecting the current level of a sound signal flowing through an amplifying means 12 at the time of outputting the prescribed sound signal to the lines L1 to Ln.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for amplifying a predetermined sound signal by amplifying means at the time of outputting a fire alarm and outputting the amplified signal to an emergency broadcast line. The present invention relates to an improvement in a fire receiver having an audio alarm function configured to output audio from broadcast equipment.

[0002]

2. Description of the Related Art Recently, in apartments and other condominiums,
An automatic fire alarm system has been introduced and plays a useful role in disaster prevention for apartment buildings. In such an automatic fire alarm system, when a fire receiver installed in a manager's room or the like receives a fire signal from a fire detector that has issued an alarm, it outputs a predetermined fire alarm and outputs a predetermined sound. The signal is amplified by the amplifying means, output to the emergency broadcast line corresponding to the fire detector that issued the alarm, and sound is output from the emergency broadcast equipment connected to the emergency broadcast line, to the nearby people. We try to evacuate.

[0003]

By the way, the above-mentioned conventional fire receiver has only a function of detecting a short-circuit of an emergency broadcast line by monitoring a short-circuit protection fuse built in the receiver. There is no function to detect disconnection / short circuit of the emergency broadcast line by detecting the current level of the sound signal flowing through the amplification means. Therefore, disconnection of the emergency broadcast line or omission of installation of emergency broadcast equipment from the emergency broadcast line. Could not be detected early, leaving a problem in terms of system reliability.

The present invention has been made in view of the above circumstances, and detects a disconnection of an emergency broadcast line or a missing omission of an emergency broadcast facility from the emergency broadcast line at an early stage to improve the reliability of the system. It is an object of the present invention to provide a fire receiver having an audio alarm function that can be improved.

[0005]

According to a first aspect of the present invention, there is provided a fire receiver having an audio alarm function for outputting a predetermined sound signal to an emergency broadcast line. Then, the disconnection / short circuit of the emergency broadcast line is determined by detecting the current level of the sound signal flowing through the amplifier.

In a fire receiver having an audio alarm function according to a second aspect, the emergency broadcast equipment has a built-in short-circuit protection fuse for protecting a short-circuit of an emergency broadcast line to which the emergency broadcast equipment is connected. Monitor protection fuses at the same time. In the fire alarm device having the voice alarm function according to claim 3, a comparison current level is stored in advance for each emergency broadcast facility, and an increase / decrease rate of the detected sound signal current level with respect to the comparison current level is calculated. When the calculated increase / decrease rate is equal to or larger than a preset threshold value, it is determined that the emergency broadcast line to which the emergency broadcast facility is connected is disconnected / short-circuited.

[0007] The fire alarm device having the voice alarm function according to the fourth aspect further includes a confirmation means for confirming an increase / decrease rate. The fire alarm device having an audio alarm function according to claim 5, wherein a current level of the sound signal flowing through the amplification means, which is detected when a predetermined sound signal is output on a test basis to the emergency broadcast line, is controlled by the operation means. Is stored as a current level for comparison.

In the fire receiver having the voice alarm function according to the present invention, the speaker capacity of the emergency broadcast facility is set by operating the operation means, and the current level for comparison is calculated based on the set speaker capacity. And memorize it. In the fire alarm device having the voice alarm function according to the seventh aspect, the current level for comparison can be confirmed by the confirmation means.

In the fire receiver having the voice alarm function according to the present invention, the threshold value can be set by operating the operation means. In the fire receiver having the voice alarm function according to the ninth aspect, the threshold value can be confirmed by the confirmation means. In the fire alarm device having the voice alarm function according to claim 10, the detection of the current level of the sound signal flowing through the amplifying means is performed periodically or when the operation means is operated. This is performed when outputting a sound signal.

[0010] In the fire receiver having the voice alarm function according to claim 11, the detection of the current level of the sound signal flowing through the amplifying means is performed when a fire signal is received from the fire detector.
This is performed when outputting a sound signal to the emergency broadcast line corresponding to the fire detector. In the fire receiver having the sound alarm function according to the twelfth aspect, when a sound signal is output to a plurality of emergency broadcast lines, when a disconnection / short-circuit of any of the emergency broadcast lines is detected, the plurality of emergency broadcast lines are detected. A broadcast line is stored, and a sound signal is output to a plurality of emergency broadcast lines later. When no disconnection / short circuit of any of the emergency broadcast lines is detected, the emergency broadcast line that outputs the sound signal is output. By comparison, a disconnected / short-circuited emergency broadcast line is specified.

In the fire receiver having the voice alarm function according to the thirteenth aspect, the stored emergency broadcast equipment can be confirmed by the confirmation means. In the fire receiver having the voice alarm function according to the fourteenth aspect, when the short circuit of the emergency broadcast line is detected, the output of the sound signal to the emergency broadcast line is stopped. In the fire alarm device having the voice alarm function according to claim 15, the frequency of the sound signal can be arbitrarily set by operating the operation means.

[0012] In the fire receiver having the voice alarm function according to the present invention, the sound signal is a signal having a frequency outside the audible range.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a main configuration of a fire receiver having a voice alarm function according to the present invention. The fire receiver 1 includes a CPU and the like, and includes an information processing circuit 10 for controlling the fire receiver 1, a fire signal receiving unit 11 for receiving a fire signal from a fire detector (not shown), and amplification means. Then, a power amplifier circuit 12 for amplifying a sound signal to be output, a switch operation section 13 which constitutes operation means and has various switches, and various programs necessary for the operation of the fire receiver 1 are stored. And an amplifier circuit current detector 1 for detecting a current level of a sound signal input to the power amplifier circuit 12
5, a matching transformer 16 for matching impedance generated by a power supply circuit (not shown), and an emergency broadcast line L1.
A sound signal output unit 17 for outputting a sound signal to Ln;
A fuse monitoring unit 18 that monitors the short-circuit protection fuses built in each of the speaker stations SP1 to SPn, and a display / printing unit 19 that constitutes checking means.

When the fire receiver 1 receives a fire signal from the fire detector that has issued the alarm, it outputs a predetermined fire alarm and outputs a predetermined sound signal to the power amplifier circuit 12.
The amplified sound signal is output from the sound signal output unit 17 to the emergency broadcast lines L1 to Ln corresponding to the fire detector.
To the emergency broadcast lines L1 to Ln.
Are output from the emergency broadcast facilities SP1 to SPn connected to the terminal to output a voice message or the like based on the sound signal, so as to urge evacuation of neighbors.

The fire receiver 1 has a switch operation unit 1.
A predetermined sound signal (test signal) is given when a test instruction is given by the operation of step 3 or periodically at preset time intervals.
Is amplified by the power amplifier circuit 12, and the amplified sound signal is output from the sound signal output unit 17 to the designated emergency broadcast line L.
1 to Ln, the emergency broadcast line L
It is also possible to test whether or not a voice message or the like based on a sound signal is output from the emergency broadcast facilities SP1 to SPn connected to 1 to Ln.

Here, when the fuse monitoring unit 18 detects the disconnection of the short-circuit protection fuse built in each of the emergency broadcast facilities SP1 to SPn, the fire receiver 1 outputs a predetermined alarm in response to the detection. In the fire receiver 1 performing such a basic operation, when outputting a sound signal to the emergency broadcast lines L1 to Ln, the current level of the sound signal flowing through the power amplifier circuit 12 is detected. Disconnection / short circuit of L1 to Ln can be detected.

FIG. 2 shows an example of such a detecting operation.
This will be described together with the flowchart of FIG. That is, in the fire receiver 1, the amplifier circuit current detector 15 detects the current level of the sound signal flowing through the power amplifier circuit 12 (100), and determines the rate of increase / decrease of the detected current level with respect to the later-described comparison current level. It is calculated (101). In addition,
The detection of the current level in step 100 includes, for example,
A minute resistor can be provided in the power amplifier circuit 12 and the operation can be performed based on the voltage generated in the minute resistor, or can be performed based on the generated voltage by generating the voltage by electromagnetic induction.

If the calculated increase / decrease rate is equal to or greater than a threshold value to be described later (102), it is determined that the emergency broadcast lines L1 to Ln to output the sound signal are disconnected / short-circuited (103). This is displayed or printed by the display / printing section 19. At this time, if it is determined that the emergency broadcast lines L1 to Ln are short-circuited, the emergency broadcast lines L1 to Ln
Stop outputting sound signal to.

The current level for comparison used in step 101 is stored in the storage unit 14 in advance. Such storage of the current level for comparison is as follows: 1. The current level of the power amplifier circuit 12 detected during the test of the emergency broadcast facilities SP1 to SPn is stored in the storage unit 14 by operating the switch operation unit 13.

2. By operating the switch operation unit 13, the speaker capacity (for example, wattage) of each emergency broadcast facility is set, and based on the set speaker capacity, a current level to flow through the emergency broadcast line to which each emergency broadcast facility is connected. Is calculated, and this current level is stored in the storage unit 14 as a current level for comparison. .. And the like.

The threshold value used in step 102 is also stored in advance in the storage unit 14 by operating the switch operation unit 13.
The threshold value to be stored is, for example, 50%
Then, if the rate of change calculated in step 101 is 50% or more, it is determined that a disconnection / short circuit has occurred. That is, the increase rate is 5
If it is 0% or more, it is determined that a short circuit has occurred, and if the rate of decrease is 50% or more, it is determined that a disconnection has occurred.

Here, the fire receiver 1 sometimes outputs sound signals to a plurality of emergency broadcast lines. In such a case, it is not possible to identify the disconnected / short-circuited emergency broadcast lines L1 to Ln only by the above-described operation of FIG. Therefore, a specific operation as shown in the flowchart of FIG. 3 is performed. That is, disconnection of the emergency broadcast lines L1 to Ln /
When a short circuit is detected, the emergency broadcast lines L1 to Ln
Is stored in the storage unit 14 (200). When a sound signal is output later (201), and when a disconnection / short circuit is not detected (202), the emergency broadcast line L1 that outputs the sound signal is output.
ＬLn (203), and the disconnected / short-circuited emergency broadcast lines L1ＬLn are identified (204).
This is displayed or printed by the display / print unit 19. When disconnection / short circuit is detected in step 202, the process waits until a sound signal is output later.

For example, if a disconnection / short circuit is detected when a sound signal is output to the emergency broadcast lines L1 and L2, the emergency broadcast lines L1 and L2 are stored, and later the emergency broadcast lines L2 and L3 are stored. When the disconnection / short circuit is not detected when the sound signal is output, the stored emergency broadcast line L1,
L2 is compared with the emergency broadcast lines L2 and L3 that output the sound signal. Thereby, it can be specified that the emergency broadcast line L1 is disconnected / short-circuited.

In the fire receiver 1 described above, the comparison current level used in step 101 described above, the threshold used in step 102 described above, and the emergency broadcast facilities SP1 to SPn stored in step 200 described above are respectively This can be confirmed by displaying or printing by the display / printing unit 19 by operating the switch operation unit 13. The increase / decrease rate calculated in step 101 is automatically displayed or printed by the display / print unit 19.

Further, the frequency of the sound signal to be output to the emergency broadcast lines L1 to Ln can be arbitrarily set by operating the switch operation unit 13. For example,
If a frequency outside the audible range, that is, a frequency of 20 KHz or more is set for the above-described emergency broadcast facilities SP1 to SPn, at the time of the test, voice messages output from the emergency broadcast facilities SP1 to SPn will be nearby people. It is not noisy because you cannot hear it.

[0026]

As can be understood from the above description, in the fire receiver having the voice alarm function according to the first aspect of the present invention, when outputting a predetermined sound signal to the emergency broadcast line, Since the current level of the sound signal flowing through the amplification means is detected, disconnection / short-circuiting of the emergency broadcast line, omission of installation of emergency broadcast equipment from the emergency broadcast line, etc. can be detected at an early stage, thereby improving the reliability of the system. I do.

In the fire receiver having the voice alarm function according to the second aspect, the short-circuit protection fuse built in the emergency broadcast equipment is monitored at the same time. In addition, a thorough detection function can be secured. In the fire alarm device having the voice alarm function according to claim 3 or 5, when the rate of increase or decrease of the current level of the detected sound signal with respect to the current level for comparison is equal to or greater than a predetermined threshold value, disconnection / Since it is judged as short circuit,
If the current level of the amplifying means flowing in a state where the system is correctly installed is stored as a comparison current level, disconnection / short circuit detection is accurately performed depending on how much the current level has increased or decreased from the comparison current level. be able to.

According to the present invention, since the comparison current level is calculated and stored based on the speaker capacity set for each emergency broadcast facility, the comparison current level can be used as a theoretical level. The fire alarm device having the voice alarm function according to claim 4 further includes a confirmation unit for confirming an increase / decrease rate, so that it is possible to determine how much the detected current level has increased or decreased from the comparison current level. You can check in real time.

In the fire alarm device having the voice alarm function according to the seventh aspect, the current level for comparison can be confirmed by the confirmation means, which is convenient at the time of site adjustment or the like.
In the fire receiver having the voice alarm function according to the eighth aspect, the threshold value can be set by the operation means, so that the setting can be made flexibly according to the site situation.

In the fire alarm device having the voice alarm function according to the ninth aspect, the threshold value can be confirmed by the confirmation means, which is convenient at the time of site adjustment or the like. Claim 1
0, the detection of the current level of the sound signal flowing through the amplifying means is carried out periodically or when the operating means is operated. Since this is performed when outputting a signal, it can be performed only when it is desired to detect disconnection / short-circuit of an emergency broadcast line, such as during site adjustment, which is convenient.

[0031] In the fire receiver having the voice alarm function according to claim 11, the detection of the current level of the sound signal flowing through the amplifying means is performed when a fire signal is received from the fire detector.
Since this is performed when outputting a sound signal to the emergency broadcast line corresponding to the fire detector, disconnection / short circuit of the emergency broadcast line can be detected even when not testing the emergency broadcast equipment, and disconnection / short circuit The opportunity to detect is increased.

In the fire receiver having the sound alarm function according to the twelfth aspect, when sound signals are output to a plurality of emergency broadcast lines, when a disconnection / short circuit of any of the emergency broadcast lines is detected, A plurality of emergency broadcast lines are stored, and a sound signal is output to the plurality of emergency broadcast lines later. If no disconnection / short circuit of any of the emergency broadcast lines is detected, the sound signal is output. Since the disconnection / short circuit is identified by comparing with the broadcast circuit, the disconnection / short circuit is detected even when the disconnection / short circuit is detected when sound signals are output to a plurality of emergency broadcast circuits. The emergency broadcast line can be specified.

In the fire receiver having the voice alarm function according to the thirteenth aspect, the stored emergency broadcast equipment can be confirmed by the confirmation means, which is convenient at the time of site adjustment or the like. In the fire receiver having the sound alarm function according to claim 14, when a short circuit of the emergency broadcast line is detected, the output of the sound signal to the emergency broadcast line is stopped. Can be prevented from occurring.

In the fire receiver having the voice alarm function according to the fifteenth aspect, the frequency of the sound signal can be arbitrarily set by operating the operation means, so that the sound signal can be selected according to the situation at the site. . In the fire alarm device having the sound alarm function according to claim 16, since the sound signal is a signal having a frequency outside the audible range, at the time of the test, a sound message output from the emergency broadcast facility is transmitted to a nearby person. Is not loud because you can't hear it.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a main configuration of a fire receiver having an audio alarm function according to the present invention.

FIG. 2 is a flowchart for explaining a disconnection / short detection operation of an emergency broadcast line;

FIG. 3 is a flowchart illustrating a specific operation of a disconnected / short-circuited emergency broadcast line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fire receiver 12 ... Power amplifier circuit 13 ... Switch operation part 19 ... Display / printing part L1-Ln ... Emergency broadcasting line SP1-SPn ... Emergency broadcasting equipment

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04H 1/02 H04H 1/02 C

Claims (16)

[Claims] An audio alarm function is provided in which a predetermined sound signal is amplified by an amplifying means and output to an emergency broadcast line to output audio from an emergency broadcast facility connected to the emergency broadcast line. In the fire receiver, when the predetermined sound signal is output to the emergency broadcast line, disconnection / short circuit of the emergency broadcast line is determined by detecting a current level of the sound signal flowing through the amplifying means. Fire receiver with voice alarm function. 2. The emergency broadcast facility according to claim 1, wherein the emergency broadcast facility has a built-in short-circuit protection fuse for protecting a short-circuit of an emergency broadcast line to which the emergency broadcast facility is connected, and simultaneously monitors the short-circuit protection fuse. Fire receiver with voice alarm function. 3. The method according to claim 1, wherein a current level for comparison is stored in advance for each emergency broadcast facility, and an increase / decrease rate of the current level of the detected sound signal with respect to the current level for comparison is calculated. When the calculated increase / decrease rate is equal to or greater than a preset threshold value, the fire alarm device has an audio alarm function for determining disconnection / short circuit of the emergency broadcast line to which the emergency broadcast facility is connected. 4. The fire receiver according to claim 3, further comprising a confirmation means for confirming the rate of change. 5. The method according to claim 3, wherein the current level of the sound signal flowing through the amplifying means, which is detected when the predetermined sound signal is output as a test to the emergency broadcast line, is controlled. A fire receiver having an audio alarm function for storing the current level for comparison by operation of the means. 6. The system according to claim 3, wherein a speaker capacity of the emergency broadcast facility is set by operating an operation means, and the comparison current level is calculated and stored based on the set speaker capacity. Fire receiver with voice alarm function. 7. The fire receiver according to claim 3, further comprising an audio alarm function capable of confirming the comparison current level by the confirmation means. 8. The fire receiver according to claim 3, wherein the fire alarm device has an audio alarm function that enables the threshold value to be set by operating an operation means. 9. The fire receiver according to claim 3, further comprising a voice alarm function that allows the confirmation means to confirm the threshold value. 10. The emergency broadcast system according to claim 1, wherein the current level of the sound signal flowing through the amplifying means is detected periodically or when the operating means is operated. A fire receiver equipped with an audio alarm function to output a sound signal to the line. 11. The method according to claim 1, wherein the detection of the current level of the sound signal flowing through the amplifying means corresponds to the detection of the fire signal when the fire signal is received from the fire sensor. A fire receiver equipped with an audio alarm function to output a sound signal to an emergency broadcast line. 12. The method according to claim 11, wherein when sound signals are output to a plurality of emergency broadcast lines,
When the disconnection / short circuit of any emergency broadcast line is detected, the plurality of emergency broadcast lines are stored, and a sound signal is output to the plurality of emergency broadcast lines later to disconnect any of the emergency broadcast lines. A fire alarm device having an audio alarm function for identifying a disconnected / short-circuited emergency broadcast line by comparing with an emergency broadcast line that outputs a sound signal when no short-circuit is detected. 13. A fire receiver according to claim 12, further comprising an audio alarm device capable of confirming the stored emergency broadcast equipment by said confirmation means. 14. A fire receiver according to any one of claims 1 to 13, further comprising an audio alarm function for stopping output of a sound signal to the emergency broadcast line when the short-circuit of the emergency broadcast line is detected. 15. The fire receiver according to claim 1, further comprising an audio alarm function capable of arbitrarily setting a frequency of the sound signal by operating an operation means. 16. The fire receiver according to claim 10, wherein the sound signal is a signal having a frequency outside an audible range.