JP2001236589A - Automatic report receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic fire report receiver for surely detecting fusion of a current fuse without actually operating equipment. SOLUTION: The automatic fire report receiver 1 supplies power to a DC route 3, to which an information processing part 8 for processing a sensing signal or the like inputted from a sensor line (not shown in the Figure) equipped with a fire sensor is connected, and a pulse route 4, which is connected through a rectifier circuit 41, for supplying the power of a pulsed DC to a smoke- proofing facility or local acoustic device that are respectively provided on the secondary side of a power source transformer 2. This device is also equipped with a fusion detecting part 6 which is connected to both the terminals of a current fuse 5 provided in the pulse route 4 for detecting fusion of this current fuse 5, and the detection output of this fusion detecting part 6 is inputted to the information processing part 8.

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 receiver.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, information processing for processing a sensing signal input from a detector line (not shown) on the secondary side of a power transformer 2 provided with a fire detector. The power is supplied to the DC path 3 to which the unit C is connected, and to the pulsating flow path 4 which is connected via the rectifier circuit 41 and supplies pulsating DC power to the smoke elimination facility, the area acoustic device, etc. (B). There is a self-fire alarm receiver A that is made to operate. The information processing section C is provided with an information processing circuit including a microcomputer. The information processing circuit C performs a sensing signal process and performs a fire notification, and also operates a smoke prevention facility for preventing spread of a fire and discharging smoke. Or drive a local acoustic device such as an emergency bell.

[0003] In this case, for example, when the power supply line (D) to the smoke evacuating equipment, the local acoustic device, etc. is short-circuited at the time of construction, or the power transformer 2 and the smoke evacuating equipment, Interface circuit (I /
F circuit) 42 or in response to the occurrence of a short circuit mode component failure due to deterioration of circuit components in the I / F circuit 42 or the occurrence of a short circuit due to metal dust, etc. In order to prevent burning, a current fuse 5 is provided in the pulsating flow path 4. Therefore, when the above-described deterioration of the circuit components occurs, the self-fire alarm receiver A
It is possible to reliably prevent equipment failure such as burning itself.

[0004]

However, in the above-mentioned prior art, the state in which the current fuse 5 is blown is used to determine whether the current-supply fuse 5 is connected to the I / F circuit 42, such as a smoke-prevention facility, a district acoustic device, or the like. An operation was performed to check the operation of the device, and the device operation was detected as being abnormal due to no power supply. In other words, the result of the operation for confirming the operation of the device includes a result other than the abnormality of the device itself.

By the way, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 9-180.
A self-fire alarm receiver, disclosed as 621, has a fusing detection unit for detecting fusing of a fuse, and a notification unit for notifying that the fusing detecting unit detects fusing of the fuse. This is a transmitter which is provided separately from the above fire detector and which is operated by a person confirming the occurrence of a fire and which outputs a fire signal to a self-fire alarm receiver, which is provided on the same line as the transmitter. The purpose of the present invention is to prevent a blowout of a fuse provided on the same line from being found until a person confirms that the indicator lamp is not turned on. Therefore, the state is always monitored, and when the monitoring result is input to the information processing unit C, there is a concern that erroneous detection of fusing may be performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a self-fire alarm receiver capable of reliably detecting the fusing of a current fuse without actually operating a device. Is to provide.

[0007]

In order to achieve the above object, in a self-fire alarm receiver according to the present invention, a fire detector provided with a fire detector is provided on a secondary side of a power transformer. A pulsating flow that supplies pulsating DC power to the DC path to which the information processing unit that performs processing such as sensing signal input from the line is connected, and to the smoke prevention equipment, district acoustic equipment, etc., connected through a rectifier circuit A self-fire alarm receiver that is supplied with power to the current path and provided at both ends of a current fuse provided in the pulsating flow path, and provided with a fusing detection unit that detects fusing of the current fuse; It is characterized in that the detection output of the detection unit is input to the information processing unit.

[0008] Thus, the blow of the current fuse provided in the pulsating flow path is detected by the blow detection unit connected to both ends thereof, and the detection output is input to the information processing unit.

The current fuse is provided at one position of a pulsating path between the power transformer and the rectifier circuit.
It is preferable that a rectifier circuit is provided for the fusing detector to detect the presence or absence of the output voltage. In this case, the blow of the current fuse provided at one place of the pulsating flow path between the power transformer and the rectifier circuit is detected by detecting the presence or absence of the output voltage of the rectifier circuit connected to both ends of the current fuse. Detected by the unit.

[0010] It is preferable that the fusing detection section is formed with a smoothing circuit, and the fusing is detected from an output voltage. In this case, the presence or absence of the output voltage of the rectifier circuit connected to both ends of the current fuse is detected via the smoothing circuit.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the first to third embodiments of the present invention.
FIG. 1 is a block diagram illustrating a schematic configuration of a self-fire alarm receiver according to an embodiment of the present invention.

The self-fire alarm receiver 1 of this embodiment processes a sensing signal input from a detector line (not shown) provided with a fire detector, which is provided on the secondary side of the power transformer 2. Path 3 connected to the information processing unit 8 for performing the operation and the like, and a pulsating flow path 4 connected through the rectifier circuit 41 for supplying pulsating DC power to the smoke prevention equipment, the area acoustic device and the like.
The self-fire alarm receiver 1 is connected to both ends of a current fuse 5 provided in the pulsating flow path 4 and detects a blow of the current fuse 5.
And outputs the detection output of the fusing detection unit 6 to the information processing unit 8.
Input. Further, the self-fire alarm receiver 1 of the embodiment
In the above, the current fuse 5 is provided at one place of the pulsating path 4 between the power transformer 2 and the rectifier circuit 41, and the fusing detector 6 is provided with a rectifier circuit 61 to detect the presence or absence of the output voltage. I have.

More specifically, the self-fire alarm receiver 1 is connected to a secondary side of a power supply transformer 2 connected to a commercial power supply (AC 100 V) and formed of, for example, an insulated power supply transformer having a plurality of voltage value outputs. Information processing unit 8 formed of an information processing circuit centered on a microcomputer, which serves as a direct current path 3, and smoke prevention equipment which serves as an input / output unit of the information processing unit 8, which serves as a pulsating flow path 4 And an interface circuit 42 such as a regional sound device. Further, a fusing detector 6, which is a main part of the present invention, is disposed and configured on one output end side of the pulsating flow path 4 immediately after the power transformer 2.

The direct current path 3 has a rectifier circuit 31 formed by using a diode bridge or the like and a smoothing circuit 32 formed by a smoothing capacitor. It is formed so that power is supplied from a full-wave rectified DC power supply.

The pulsating flow path 4 is formed such that pulsating DC is supplied from a rectifier circuit 41 formed by using a diode bridge or the like to the smoke prevention equipment, the area acoustic device, and the like via the interface circuit 42. Have been. The current fuse 5 is connected to the rectifier circuit 41 and the power transformer 2.
A fusing detection unit 6 provided at one end of the current fuse 5 and provided at one end of the current fuse 5 for detecting the fusing thereof.
Is provided.

The fusing detector 6 detects the fusing of the current fuse 5 provided in the pulsating flow path 4, and includes a rectifier circuit 61, a smoothing circuit 62 using a smoothing capacitor, and an output voltage of the smoothing circuit 62. There is a detection circuit 7 for detecting the blow of the current fuse 5 based on the presence or absence. In this case, the rectifier circuit 61 only converts an AC voltage generated through the diode bridge of the rectifier circuit 41 into a DC voltage at both ends when the current fuse 5 is blown. It is preferable to form the device only.

The detection circuit 7 detects when a DC voltage is generated between both ends of the smoothing circuit 62 and inputs the detection result to the information processing section 8. This detection circuit 7
In order to ensure electrical insulation from the information processing unit 8 and input the signal, it is preferable to use an insulating means such as an optical isolator called a photocoupler element. In this case, the blow of the current fuse 5 is detected via the smoothing circuit 62 as the presence or absence of the output voltage of the rectifier circuit 61, and the detection result is input to the information processing unit 8 later than the time of the occurrence of the blow. However, the notification of the fusing detection is not particularly urgent as in the case of the fire notification.
Providing 2 can conversely prevent an erroneous notification that the current fuse 5 has been blown out even in the event of an instantaneous power failure of the commercial power supply.

In the self-fire alarm receiver 1 described above, the current fuse 5 provided in the pulsating flow path 4 is blown first by the detection circuit 7 of the blow detection unit 6 connected to both ends thereof.
Then, the detection output is input to an input port provided in the input / output unit of the information processing unit 8. Based on the input signal, the information processing section 8 displays the information on the display section (not shown) of the self-fire alarm receiver 1 or notifies a message indicating that the current fuse 5 has blown by a notification means such as a voice. It does.

At this time, the fusing of the current fuse 5 provided at one place of the pulsating flow path 4 between the power transformer 2 and the rectifier circuit 41 is performed by connecting the rectifier circuit provided at both ends of the current fuse 5. The detection is performed by the fusing detector 6 for detecting the presence or absence of the output voltage of the current fuse 61. However, the detection of only the fusing state of the current fuse 5 can reduce the occurrence of erroneous detection.

Therefore, the self-fire alarm receiver 1 described above
According to the above, the fusing of the current fuse 5 provided in the pulsating flow path 4 is detected by the fusing detection unit 6 connected to both ends thereof, and the detection output is input to the information processing unit 8. Thus, it is possible to reliably detect the fusing of the current fuse 5 without actually operating a device such as a smoke elimination facility or a district acoustic device.

The blow of the current fuse 5 provided at one location of the pulsating flow path 4 between the power transformer 2 and the rectifier circuit 41 causes the output voltage of the rectifier circuit connected and provided at both ends of the current fuse 5. Fusing detector 6 for detecting the presence or absence of
Therefore, only the blown state of the current fuse 5 is detected, so that the occurrence of erroneous detection can be reduced. The presence or absence of the output voltage of the rectifier circuit 41 connected to both ends of the current fuse 5 is checked by the smoothing circuit 6.
2, it can be easily prevented from being erroneously notified as a blow of the current fuse 5 even in the case of an instantaneous power failure of the commercial power supply, and the occurrence of erroneous detection can be further reduced.

[0022]

The present invention is embodied as in the above-mentioned embodiment. In the self-fire alarm receiver according to the first aspect, the operation of equipment such as smoke prevention equipment and district sound equipment is actually performed. It is possible to reliably detect the fusing of the current fuse without performing it.

Further, in the self-fire alarm receiver according to the second aspect, the occurrence of erroneous detection can be reduced.

In the self-fire alarm receiver according to the third aspect, the occurrence of erroneous detection can be further reduced.

[0025]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a self-fire alarm receiver according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a self-fire alarm receiver which is a conventional example of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 self-fire alarm receiver 2 power transformer 3 DC path 4 pulsating path 41 rectifier circuit 5 current fuse 6 fusing detector 61 rectifier circuit 8 information processor

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hidekazu Suzuki 1 Tokai Denko Co., Ltd. 68 Kawabe-cho, Tsu City, Mie Prefecture F-term (reference) 5C087 AA02 BB02 CC05 CC06 CC22 DD04 EE05 EE07 GG64 5G405 AA08 BA01 CA12 CA27 DA01

Claims (3)

[Claims] 1. A rectifier circuit, comprising: a DC path connected to an information processing unit, which is provided on a secondary side of a power transformer and which performs processing such as a sensing signal input from a detector line provided with a fire detector, and a rectifier circuit. A self-fire alarm receiver connected to the pulsating flow path for supplying pulsating DC power to the smoke prevention equipment, the local acoustic device, etc., which is provided through the pulsating flow path. A self-fire alarm receiver connected to both ends of the current fuse and provided with a fusing detection unit for detecting fusing of the current fuse, and having a detection output of the fusing detection unit input to the information processing unit; . 2. The method according to claim 1, wherein the current fuse is provided at one position of a pulsating path between a power transformer and the rectifier circuit, and the fusing detector is provided with a rectifier circuit to detect the presence or absence of an output voltage. The self-fire alarm receiver according to claim 1, wherein: 3. The self-fire alarm receiver according to claim 2, wherein the fusing detection section is formed with a smoothing circuit, and detects fusing from an output voltage of the smoothing circuit.