JPH07262482A - Disaster prevention monitoring device - Google Patents

Abstract

PURPOSE:To surely prevent an inspection connector from being pulled during an inspection and to prevent a warning signal from being erroneously transmitted to a receiver, regarding a disaster monitoring device. CONSTITUTION:This device discriminates the operation of a switch means 58 switching the warning signal by the inspection from a fire sensor 6 at the time of the inspection by an inspection so that the signal may not be outputted to a fire detection means 47 and may be outputted to the inspection device and is provided with an inspection attention means 20 attending not so as to pull an inspection connector during an inspection in the vicinity of the inspection connector 19 of a repeater 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a receiver, a repeater connected to the receiver, and a sensor with a check function connected to the repeater. Regarding monitoring equipment.

[0002]

2. Description of the Related Art As a conventional disaster prevention monitoring apparatus, there is known, for example, a receiver, a relay connected to the receiver, and a fire detector connected to the relay. The fire detector has a fire detector circuit that detects a fire occurrence and outputs a warning signal to the detector line, and an inspection circuit that inspects the fire detection circuit with an inspection signal.

The receiver has a receiving circuit for receiving a warning signal and a disconnection signal, a voice alarm section for notifying a fire alarm, a display section for displaying a fire alarm / disconnection, and an operation section for inputting necessary information. And a control unit that controls each unit. The repeater is a fire detection circuit that detects and sends a warning signal from the fire detector, a fire output circuit that outputs the warning signal detected by the fire detection circuit to the receiver, and a fire alarm in front of the warning signal. The outdoor display section that displays, a transfer output section that transfers the alarm signal to another receiver, a fire recovery circuit that restores the sensor line, and a disconnection that detects the disconnection by loop monitoring the sensor line. It has a detection circuit, a disconnection signal output circuit that outputs a disconnection signal detected by the disconnection detection circuit, and a switching circuit that switches the sensor line from the fire detection circuit to the outdoor inspection device during inspection by the outdoor inspection device.

[0004]

However, in such a conventional disaster prevention monitoring device, when the inspection connector of the outdoor inspection device is connected to the inspection connector provided on the repeater, the inspection of the sensor is performed. , Since the display during inspection is performed only by the outdoor inspection device, if you accidentally disconnect the inspection connector of the outdoor inspection device from the inspection connector of the repeater during inspection, it may be inspected depending on the timing when multiple contacts come off. There was a risk that the warning signal by would be sent to the receiver and the local sound would ring.

The present invention has been made in view of the above-mentioned conventional problems, and an inspection caution means for discriminating the operation of the switching means for performing inspection switching is provided in the relay so that the inspection can be performed during the inspection. It is an object of the present invention to provide a disaster prevention monitoring device that gives caution not to wipe the connector.

[0006]

FIG. 1 is a diagram for explaining the principle of the present invention. The present invention detects a receiver 11, a repeater 8 connected to the receiver 11 and a change in a physical phenomenon caused by a fire which is connected to the repeater 8 and outputs an alarm signal to a detector line 44. Fire detection circuit 45 to output and the fire detection circuit 4
In the disaster prevention monitoring device including the fire detector 6 including the inspection circuit 46 for performing the inspection of 5, the relay detector 8 outputs a warning signal from the fire detector to the fire detection means 47 at the time of inspection by the inspector. It is characterized by providing the inspection caution means 20 for discriminating the operation of the switching means 58 for switching the output to the inspection device without doing so and for not disconnecting the inspection connector during the inspection.

Further, the present invention is characterized in that the switching means 58 is a test relay driven by a drive signal from the inspection device and a relay switch opened and closed by the test relay. Further, the present invention is characterized in that the inspection caution means 20 is connected in series to the test relay.

Further, the present invention is characterized in that the inspection caution means 20 is provided in front of the repeater 8 and in the vicinity of the inspection connector 19. Further, the present invention is characterized in that the inspection caution means 20 comprises a light emitting diode.

[0009]

According to the disaster prevention monitoring apparatus of the present invention having such a structure, the operation of the switching means 58 for switching from the fire detection means 47 to the inspector at the time of inspection by the inspector is discriminated, and the inspection connector is opened during the inspection. Since the inspection caution means 20 for giving caution not to pull out is provided in the front of the repeater 8 and in the vicinity of the inspection connector 19, the inspection caution means when the hand is pulled out to pull out the inspection connector during the inspection. Since 20 is in the eyes, it is possible to prevent erroneous operation.

That is, in the conventional example, since the display during the inspection is performed only by the in-inspection light provided on the inspector side, the inspection connector may be accidentally pulled out during the inspection.
Therefore, depending on the timing at which a plurality of contacts come off, a warning signal for inspection may be transmitted to the receiver 11 and the local sound may ring. In order to solve such a problem, in the present invention, the inspection caution means 20 is provided in the vicinity of the inspection connector 19 on the front surface of the repeater, so that it is possible to reliably prevent the inspection connector from being pulled out during the inspection. Therefore, it is possible to prevent the alarm signal from being erroneously transmitted to the receiver 11.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 2 to 7 are views showing an embodiment of the present invention.
FIG. 2 is an overall configuration diagram according to an embodiment of the present invention. Figure 2
, 1 is a housing complex, 2 is the outside of the housing unit of the housing complex 1,
3 is the inside of the dwelling unit of the apartment house 1.

In each of the dwelling units 4 and 5 in the dwelling unit interior 3, a fire detector 6 having an outdoor inspection function, such as an analog type or on / off type smoke detector or a heat detector, and a speaker 7 are installed. A repeater 8 with an outdoor inspection function is installed in each of the dwelling units 4 and 5, and an analog common-use fire sensor 9 and a common-use speaker 10 are installed in a common part of the housing complex 1 such as a corridor or stairs. .

Reference numeral 11 denotes a receiver. From the receiver 11, a power source / signal line 12 composed of a power line, a signal line and a common line is drawn out for each floor, and a plurality of repeaters 8 are provided on the power source / signal line 12. Connected. In addition, the shared analog-type sensor 9 is connected to the power / signal line 12. The fire detector 6 is connected to the repeater 8 via a signal line 13, a common line 14, and an inspection line 15.

Further, the audio signal line 16 is drawn out from the receiver 11 for each floor, the common-use speaker 10 is connected to the audio signal line 16, and the dwell units 4 and 5 are connected to each other via the relay 8. The speaker 7 is connected. Reference numeral 17 is an outdoor inspection device (inspection device), and the outdoor inspection device 17 is connected to the relay 8 by a connector to inspect the fire detector 6 from outside.

Next, FIG. 3 is an external view of the repeater 8 and the outdoor inspection device 17. In FIG. 3, 8 is the repeater,
The repeater 8 is embedded in a wall surface such as the upper part of the door of each dwelling unit 4, 5. An opening / closing door 18 is provided on the front surface of the repeater 8 so as to be openable / closable. When the opening / closing door 18 is opened, a connector (inspection connector) 19 and an inspection caution light 20 as an inspection caution means appear.

When the fire detector 6 is inspected by the outdoor inspector 17, the connector 19 is connected to the connector 19 (inspection connector) of the outdoor inspector 17. An inspection caution light 20, which will be described later, is provided in the vicinity of the connector 19 in order to warn the inspector not to accidentally disconnect the connector 21 of the outdoor inspection device 17 from the connector 19 of the repeater 8 during inspection. ing. In addition, in the front center part of the repeater 8,
An outdoor indicator light 34 for displaying a fire alarm is provided.

The outdoor inspector 17 comprises a power supply unit 22 and an inspector body 23, and the connector 21 is connected to the inspector body 23 via a cable 24. Two
Reference numeral 5 denotes a sensor test switch provided in the inspector main body 23, and the inspection of the fire detector 6 is started by turning on the sensor test switch 25. Reference numeral 103 denotes a function check switch provided in the checker main body 23. By turning on the function check switch 103, the functions of peripheral devices including the relay 8 are checked.

Reference numeral 26 is a normal / abnormality indicator lamp provided in the inspector main body 23 in the number of 1 to n. The normal / abnormality indicator lamp 26 sequentially indicates whether the inspection result of the fire detector 6 is normal or abnormal. 27 is a buzzer as a sounding part, and a buzzer 2
Reference numeral 7 notifies the inspector of the inspection result of the fire detector 6 with a buzzer sound. Reference numeral 28 denotes an inspection light which indicates that the inspection is in progress. The inspection light 28 blinks during the inspection and lights up when the inspection is completed.

Reference numeral 29 is a power switch, and when the power switch 29 is turned on, power is supplied to the internal circuit of the outdoor inspection device 17. Reference numeral 30 is a first power supply light, and the first power supply light 30 indicates that power is input from the repeater 8. 31 is a second power supply light, and the second power supply light 3
1 indicates whether the power switch 29 is on or off. The AC power supply connector 32 is pulled out from the power supply unit 22,
AC power is supplied to the power supply unit 22 via the AC power supply connector 32, and is converted into DC by the power supply unit 22. The power supply unit 22 has a DC battery 33 so that the power supply unit 22 can be inspected even when there is no power supply or AC power
Is stored.

Next, FIG. 4 is a block diagram showing an internal configuration example of the receiver 11, the relay 8 and the fire detector 6. In FIG. 4, reference numeral 11 denotes the receiver, and the receiver 11 is connected to the relay 8 via a power line 41, a signal line 42, and a common line 43, and the terminal V, the terminal L, and the terminal C of the relay 8 are connected. Another repeater is connected to. Further, a pseudo terminating resistor 54 described later is provided.

A plurality of (1 to n) fire detectors 6 are connected to the repeater 8 via the signal line 13 and the common line 14 which form the detector line 44 and the inspection line 15. The fire detector 6 is composed of a fire detection circuit 45 and an inspection circuit 46. The fire detection circuit 45 detects a change in a physical phenomenon caused by a fire and outputs a warning signal to the detector line 44. The inspection signal is output to the fire detection circuit 45, and the fire detection circuit 45 is operated in a pseudo manner to generate the fire detection circuit 45.
And the inspection signal is sent to the next stage sensor. The fire detection circuit 45 includes, for example, a power supply unit, an operation output unit, a constant voltage circuit, a switching unit, a comparison circuit, a reference value setting circuit, a temperature detection unit, and the inspection circuit 46.
For example, it is composed of a test switch unit, a switch circuit, a forced recovery circuit, an alarm detection circuit, and the like.

Reference numeral 47 is a fire detecting section provided in the repeater 8 as a fire detecting means. The fire detecting section 47 detects a warning signal from the fire detector 6 and outputs the warning signal to the fire output section 48. , And transmits to the outdoor indicator light 34 and the transfer output unit 49. When the fire output unit 48 receives the warning signal, it outputs the warning signal to the receiver 11. When the outdoor indicator lamp 34 receives the alarm signal, it displays a fire alarm in front of the repeater 8.
When the notification output unit 49 receives the notification signal, it outputs the notification to a house information board or the like.

Reference numeral 50 is a recovery circuit, and the recovery circuit 50 monitors the voltage between the signal line 42 and the common line 43 and restores the fire detector 6 when the voltage is zero V. Reference numeral 51 is a disconnection detection unit as disconnection detection means, and the disconnection detection unit 50 is the sensor line 4
If 4 is in a loop, the voltage is detected, and when the sensor line 44 is disconnected, a disconnection signal is output.

Reference numeral 52 denotes a disconnection signal output section. When the disconnection signal output section 52 receives a disconnection signal from the disconnection detection section 51 or from another repeater, the switch 60 connected in series to the pseudo termination resistor 54 is turned off. Then, the terminal L and the terminal C are separated from each other, and a disconnection signal is transmitted to the receiver 11. Terminal Q1
The test relay 53 and the lighting caution light 20 are connected in series between the + terminal and the terminal Q1-, and the test relay 53 is activated by the drive signal for the test from the outdoor inspector 17, and the lighting caution light 20 is lit. .

Reference numeral 55 denotes a relay switch for switching the contact from the contact 56 to the contact 57 by the operation of the test relay 53. When the relay switch 55 operates, the sensor line 4
4 is switched from the fire detector 47 to the outdoor inspection device 17. Therefore, the test relay 53 and the relay switch 55
Constitutes a switching means 58 for performing inspection switching. Here, when the test relay 53 is activated, the disconnection output of the disconnection detector 51 is forcibly prohibited.

That is, a switch as a prohibiting means is provided in the disconnection detecting section 51, and the switch is operated by the operation of the test relay 53 to forcibly prohibit the output of the disconnection signal. Here, the inspection caution light 20 as inspection caution means is provided in series with the test relay 53, and the inspection caution light 20
Is composed of, for example, a light emitting diode.

The indication during the inspection was made only by the in-progress light 28 of the outdoor inspector 17, but the connector 2 was mistakenly inspected during the inspection.
Sometimes I missed 1. In such cases,
Depending on the timing, a plurality of contacts may come off and an alarm signal for inspection may be transmitted to the receiver 11. In order to prevent this, an inspection caution light 20 is provided near the connector 19 of the repeater 8 so that the inspection caution light 20 can be seen when the hand is extended to remove the connector 21 during inspection. In this way, misoperation is prevented.

The inspection caution light 20 determines the operation of the test relay 53 and warns the inspector not to disconnect the connector 21 during inspection. In FIG. 4, except for the terminal LA, the terminal CB, the terminal LB, the terminal QB, the terminal Q1 +, and the terminal Q1.
-, The terminal QA, the terminal LA1, the terminal CA and the terminal V are connected to the corresponding terminals of the outdoor inspector 17. The terminal V is connected to another terminal V via a fuse 59, and the receiver 1
Power is supplied from 1.

The receiver 11 is provided with a control circuit 71 composed of a CPU, and the control circuit 71 is provided with a reception circuit 72, a display section 73, a voice notification section 74, and an operation section 75.
When the receiving circuit 72 receives the alarm signal or the disconnection signal via the repeater 8, the receiving circuit 72 sends the signal to the control circuit 71. A fire alarm and a disconnection are displayed on the display unit 73 under the control of the control circuit 71. The voice notification unit 74 gives a voice notification of a fire alarm or disconnection.
Also, necessary information is input from the operation unit 75.

Next, FIG. 5 is a diagram showing an internal configuration example of the outdoor inspection device 17. In FIG. 5, reference numeral 81 is an outdoor inspector 17.
A control unit including a CPU provided in the control unit 8
1 includes a sensor test unit 82, a test relay drive circuit 83, an operation / display unit 84, a transfer output unit 85, and a dip switch 8
6 and a power supply 87 are provided respectively. Further, the outdoor inspector 17 includes terminals QB, QA, LB, and C.
B, terminal LA1, terminal CA, terminal Q1 +, terminal Q1-,
And a terminal V, and is connected to each corresponding terminal of the repeater 8. The fire detector 6 is inspected by connecting the outdoor inspection device 17 to the relay device 8.

When the control unit 81 outputs the test signal to the test relay drive circuit 83, the test relay drive circuit 83 outputs the drive signal to the test relay 53 and operates the test relay 53. When the test relay 53 moves, the inspection caution light 20 is turned on, and the relay switch 55 switches the contact 57 to the contact 56. As a result, the detector line 44 is connected to the fire detection unit 47.
Is switched to the outdoor inspection device 17.

As described above, the inspection caution light 20 warns the inspector not to disconnect the connector 21 during inspection. The sensor test section 82 includes a test voltage control circuit 88, a fire detection circuit 89, an L line voltage control circuit 90, and a voltage detection circuit 9.
It is composed of 1. Upon receiving the inspection start signal from the control unit 81, the test voltage control circuit 88 controls the test voltage and outputs an inspection signal, for example, 20V, to the fire detector 6 via the terminal QA. The fire detection circuit 89 sends a warning signal from the fire detector 6 which is falsely notified by the inspection signal to the terminal L.
It detects between A1-terminal CA, and sends a warning signal to the control part 81. When the L line voltage control circuit 90 receives the restoration signal from the control unit 81, it restores the sensor line 44. The voltage detection circuit 91 determines the end of the test by detecting the inspection signal through the terminal QB, and sends the test end signal to the control unit 81.

The operation / display section 84 includes the plurality of normal / abnormal display lights 26, the inspection light 28, and the buzzer 27.
And the sensor test switch 25.
When the sensor test switch 25 is manually turned on,
An inspection start signal is output to the control unit 81. The in-inspection lamp 28 blinks in response to the inspection start signal from the control unit 81 and lights up in response to the test end signal, indicating that the inspection has been completed.

The normal / abnormal display lamp 26 sequentially displays the normal or abnormal state of the fire detector 6 in response to a warning signal from the control section 81. The buzzer 27 issues a buzzer sound in response to a warning signal from the control unit 81 to notify the normality or abnormality. Transfer output unit 8
Reference numeral 5 is composed of a plurality of normal / abnormality display transfer output units 92 each composed of a photo coupler and an in-inspection transfer output unit 93 each composed of a photo coupler.

The normal / abnormal display notification output section 92 outputs the normal or abnormal status to a display means such as a printer in response to a notification signal from the control section 81, and outputs the in-inspection notification output section 9
Reference numeral 3 denotes a check start signal and a test end signal from the control unit 81, and outputs to the other display means that the check is in progress. A voltage of, for example, 24 V is supplied to the power supply unit 87 from the terminal V, and the first power supply lamp 30 is turned on. When the power switch 29 is turned on, the power relay 94 operates.

When the relay switch 95 switches the contact 96 to the contact 97 by the operation of the power relay 94, the power circuit 98 composed of a switching regulator supplies a predetermined voltage to the sensor test section 82, the control section 81, the operation / display section 84, etc. And at the same time, the second power supply lamp 31 is turned on. The dip switch 86 is for switching the operation mode. In the automatic mode, 1 to n fire detectors 6 are automatically inspected sequentially, and in the manual mode, each fire detector 6 is manually inspected.

Reference numeral 22 is the power supply unit, and the power supply unit 22 is a connector 9 provided on the power supply unit 22 side.
9 and the connector 100 provided on the side of the outdoor inspection device 17 are connected to the inspection device main body 23. Power supply unit 2
An AC / DC converter 101 is provided in the unit 2, and the AC / DC converter 101 converts AC power input through the AC power connector 32 into DC, and the connector 100,
It is supplied to the power supply unit 87 via 99.

The DC battery 33 is charged by the AC / DC converter 101, and supplies DC power to the power supply section 87 by turning on the power switch 102 when a power failure occurs. A function check switch 103 checks the function of the repeater 8 by short-circuiting the terminals LB and CB. Next, the operation will be described.

FIG. 6 is a flow chart for explaining the operation of the outdoor inspection device 17. In FIG. 6, first, the DIP switch 86 is set to the automatic inspection mode, and the outdoor inspection device 17 is connected to the relay device 8 in order to inspect the fire detector 6 in step S1. That is, the connector 21 of the outdoor inspection device 17 is inserted into the connector 19 of the relay device 8. A voltage of, for example, 24 V is supplied from the terminal V to the power supply unit 87,
The first power supply unit 30 lights up.

When the power switch 29 is turned on in step S2, the power relay 94 operates and the relay switch 95
Is switched from the contact 96 to the contact 97, and the power circuit 98
Supplies a predetermined voltage from the sensor test unit 82, the control unit 81, the operation / display unit 84, and the like, and the second power supply lamp 31 is turned on. Next, in step S3, the sensor test switch 2
When 5 is turned on, the control unit 81 outputs a test signal to the test relay drive circuit 83 in step S4, and the test relay drive circuit 83 outputs a drive signal to the test relay 53 in step S5. Further, when the control unit 81 outputs an inspection start signal to the in-inspection light 28 of the operation / display unit 84 and the in-inspection transfer output unit 93 of the transfer output unit 85, the inspection light 28 in the operation / display unit 84 blinks. The display indicates that the inspection is in progress until it lights up. The in-transmission notification output section 93 of the notification output section 85 also outputs a notification that the inspection is in progress.

On the other hand, in the repeater 8, the test relay drive circuit 8
When the drive signal is received from 3, the test relay 53 is activated, the relay switch 55 is switched from the contact 57 to the contact 56, and the detector line 44 is switched from the fire detection unit 47 to the outdoor inspection device 17. Next, in step S6, when the control unit 81 outputs the inspection signal to the test voltage control circuit 88, the test voltage control circuit 88 controls the test voltage and outputs the inspection signal to the fire detector 6. The fire detector 6 gives a pseudo alarm by the inspection signal, and the alarm signal is sent to the outdoor inspection device 17
Then, in step S7, the fire detection circuit 89 detects this and outputs a warning signal to the control unit 81.

In response to the alarm signal from the control unit 81, the normal / abnormal display lamp 26 of the operation / display unit 84 displays normal or abnormal in step S8, and the normal / abnormal display transfer output unit of the transfer output unit 85 is displayed. Reference numeral 92 outputs a normal or abnormal signal. Next, when the control unit 81 outputs a restoration signal to the L line voltage control circuit 90 in step S9, the L line voltage control circuit 90 restores the sensor line 44. When the fire detector 6 is restored, an inspection signal is output to the next fire detector 6, and the normal / abnormal display lamp 26 and the normal / abnormal display transfer output unit 92 sequentially display normal or abnormal. When the inspection of all the fire detectors 6 connected to the relay 8 is completed and the voltage of the terminating resistor is detected by the voltage detection circuit 91 in step S10, a test end signal is sent to the control unit 81.

In response to the test end signal, the control unit 81 turns on the lighting lamp 28 and the in-inspection notification output unit 93 in step S11 to display that the inspection is completed. Next, FIG.
3 is a flowchart illustrating the operation of the repeater 8. In FIG. 7, in step S21, the terminal Q1 + and the terminal Q1-
When a drive signal is input to the relay device 8 from the relay test drive circuit 83 of the outdoor inspector 17 via, the test relay 53 is activated in step S22. By the operation of the test relay 53, the relay switch 55 is switched from the contact 57 to the contact 56 in step S23, and in step S24.
Then, the switches of the disconnection detector 51 are simultaneously activated. The disconnection detection unit 51 detects the disconnection of the sensor line 44 in step S25 by switching the contact of the relay switch 55, but since the switch of the disconnection detection unit 51 is moving, the disconnection output is forcibly prohibited in step S26. To be done. Therefore,
The disconnection signal is not sent to the disconnection signal output unit 52, and the disconnection signal output unit 52 does not output the disconnection signal to the receiver 11. Therefore, the disconnection is not displayed on the display unit 73 of the receiver 11.

On the other hand, when the test relay 53 is activated, the inspection light 20 connected in series to the test relay 53 is turned on in step S27. The inspection caution light 20 is the test relay 5
The operation of 3 is discriminated and the inspector is cautioned not to disconnect the connector 21 during inspection. That is, since the inspection caution light 20 is lit near the connector 19 of the repeater 8,
When the hand is pulled out to pull out the connector 21 during the inspection, the inspection caution lamp 20 is lit up and it is possible to prevent the connector 21 from being accidentally pulled out during the inspection.

After the inspection, the sensor test switch 25
Is turned off, the test relay 53 is turned off in step S28, the relay switch 55 is returned to the original position in step S29, and the switch of the disconnection detection unit 51 is also returned to the original position. At the same time, the inspection is performed in step S30. Warning light 20
Also goes out. If the connector 21 is pulled out when the inspection caution light 20 is turned off in this way, the alarm signal is erroneously detected.
Can be prevented from being sent to 1.

As a result, the performance of the device can be improved.

[0047]

As described above, according to the present invention, the operation of the switching means for switching the sensor line from the fire detection means to the inspection device is checked during the inspection by the inspection device, and the connector is not disconnected during the inspection. As described above, since the inspection caution means for giving caution is provided near the connector of the repeater, it is possible to prevent erroneous operation of disconnecting the connector during inspection. as a result,
The performance of the device can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of the principle of the present invention.

FIG. 2 is an overall configuration diagram according to an embodiment of the present invention.

[Figure 3] Exterior view of the repeater and outdoor inspection device

FIG. 4 is a block diagram showing an internal configuration example of a repeater or the like.

FIG. 5 is a block diagram showing an internal configuration example of an outdoor inspection device.

FIG. 6 is a flowchart explaining the operation of the outdoor inspection device.

FIG. 7 is a flowchart explaining the operation of the repeater at the time of inspection.

[Explanation of symbols]

 1: Housing complex 2: Outside of dwelling unit 3: Inside of dwelling unit 4,5: Dwelling unit 6: Fire detector 7: Speaker 8: Repeater 9: Fire detector for common area 10: Speaker for common area 11: Receiver 12: Power / combined signal Line 13: Signal line 14: Common line 15: Check line 16: Audio signal line 17: Outdoor checker 18: Open / close door 19, 21: Connector (check connector) 20: Check warning light (check caution means) 22: Power supply unit 23: Inspector body 24: Cable 25: Sensor test switch 26: Normal / abnormal indicator light 27: Buzzer 28: Checking light 29: Power switch 30: First power light 31: Second power light 32: AC power connector 33 : DC battery 34: Outdoor indicator light 41: Power line 42: Signal line 43: Common line 44: Detector line 45: Fire detection circuit 46: Inspection circuit 47: Fire detection part (fire Output means) 48: Fire output section 49: Transfer output section 50: Recovery circuit 51: Disconnection detection section (disconnection detection section) 52: Disconnection signal output section 53: Test relay 54: Pseudo termination resistance 55: Relay switch 56, 57 : Contact point 58: Switching means 59: Fuse 60: Switch 71: Control circuit 72: Reception circuit 73: Display section 74: Voice notification section 75: Operation section 81: Control section 82: Sensor test section 83: Test relay drive circuit 84: Operation / display unit 85: Notification output unit 86: DIP switch 87: Power supply unit 88: Test voltage control circuit 89: Fire detection circuit 90: L line voltage control circuit 91: Voltage detection circuit 92: Normal / abnormal display transfer output Part 93: Report output during inspection 94: Power relay 95: Relay switch 96, 97: Contact 98: Power circuit 99, 100: Connector 101: AC / DC converter 102: Power switch 103: Function check switch

Claims (5)

[Claims] 1. A fire detection system which detects a receiver, a repeater connected to the receiver, and a change in a physical phenomenon caused by a fire which is connected to the repeater and outputs a warning signal to a detector line. In a disaster prevention monitoring device equipped with a fire detector consisting of a circuit and an inspection circuit for inspecting the fire detection circuit, the repeater is used as a fire detection means by issuing a warning signal from the fire detector during inspection by the inspector. A disaster prevention monitoring device characterized by being provided with inspection caution means for discriminating the operation of the switching means for switching to output to the inspection device without outputting, and being careful not to disconnect the inspection connector during inspection. 2. The disaster prevention monitoring device according to claim 1, wherein the switching means is a test relay driven by a drive signal from the inspection device and a relay switch opened and closed by the test relay. 3. The disaster prevention monitoring device according to claim 2, wherein the inspection caution means is connected in series to the test relay. 4. The disaster prevention monitoring device according to claim 1, wherein the inspection caution means is provided in front of the repeater and near the inspection connector. 5. The disaster prevention monitoring device according to claim 1, wherein the inspection caution means comprises a light emitting diode.