JPH06205851A - Disaster prevention monitoring device - Google Patents

Abstract

PURPOSE:To provide a disaster prevention monitoring device of a high reliability by providing a fire sensor with a self failure-diagnosis function, which transmits a failure signal when a failure is generated, and a control means which drives a fire preventing/smoke preventing device and a smoke discharging device in response to a fire detecting signal. CONSTITUTION:Thermal sensors, 4, 5 and smoke sensors 6, 7 as fire sensors are connected to a receiver 1. The thermal sensors 4, 5 are provided in each monitoring area which is divided by a fire prevenint/smoke preventing device, and transmit a fire detecting signal to a relay 3 when a detected temperature exceeds a threshold value. The smoke sensors 6, 7 detect the concentration of smoke due to the generation of a fire, and transmit a fire detecting signal when the smoke concentration exceeds a threshold value. Also, a testing unit 9 is provided on the smoke sensors 6, 7, and a test by a test LED is performed, and when it is found out that a failure takes place, a failure signal is outputted. In addition, smoke discharging devices 23, 24 are provided. By this method, even when one of the smoke sensors 6, 7 fails, the fire preventing/smoke preventing device and smoke discharging devices 23, 24 can be operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention monitoring device for controlling a fire and smoke preventive device by a signal from a fire detector.

[0002]

2. Description of the Related Art As a conventional disaster prevention monitoring device, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 62-275478. That is, in this disaster prevention monitoring device, a smoke concentration sensor that detects smoke concentration is installed in the area where the fire shutter is installed, and the smoke density in the area where the fire shutter is installed is a predetermined first threshold value, for example, fire smoke density. When the smoke concentration reaches the evacuation level, the first shutter control is performed to lower the fire prevention shutter to a height where people can pass through it to secure the evacuation route and prevent the diffusion of smoke to the evacuation route. The smoke concentration in the installation area is dangerous as an evacuation route No. 1
When the second threshold value higher than the threshold value is reached, the second shutter control for lowering the fireproof shutter to the fully closed state to form the fireproof section is performed.

Further, Japanese Patent Laid-Open No. 62-281972 discloses the following disaster prevention monitoring device. That is, this disaster prevention monitoring device combines a hanging wall and a fire door so as to form a fireproof partition in the middle of the evacuation route toward the emergency exit, etc., and detects smoke concentration in the installation area of the drooping wall and fire door. A smoke concentration sensor is provided, and when the detected smoke concentration reaches a predetermined first threshold value, for example, the smoke concentration of fire but reaches the smoke concentration at which evacuation is possible, the drip wall is driven downward to secure an evacuation route. While preventing the diffusion of smoke to the evacuation route, and further, when the detected smoke concentration reaches a second threshold value higher than the first threshold value, which is dangerous for the evacuation route, the fire door is closed and driven to prevent fire. Are formed.

[0004]

However, in such a conventional disaster prevention monitoring device, in any case, 1
Since the two sensors control the fire shutter and fire door, the fire shutter and fire door could be driven by non-fire such as cigarettes and steam. If the fire shutters and doors were driven even though it was not a real fire, there was a danger that pedestrians would be involved in an accident, especially at department stores. On the other hand, when the sensor fails, the fire shutter and fire door cannot be driven even in the case of an actual fire, and the spread of the fire cannot be prevented. As a result, there is a problem that reliability is lowered.

The present invention has been made in view of the above-mentioned conventional problems, and the drive of a fire and smoke preventive device such as a fire preventive shutter and a fire preventive door is controlled by each of the monitor areas divided by the fire preventive smoke preventer. It is an object of the present invention to provide a highly reliable disaster prevention monitoring device by controlling based on the output of a fire sensor provided in the.

[0006]

In order to achieve the above-mentioned object, the present invention provides a fire and smoke preventive device connected to a receiver for preventing fire flame and smoke from spreading, and is divided by the fire and smoke preventive device. Connected to the receiver and a fire sensor that is provided in each of the monitoring areas and that is connected to the receiver to detect a fire and that has a self-diagnosis function and sends a failure signal to the receiver when a failure occurs The receiver is equipped with a smoke exhausting device, and when the receiver receives both fire detection signals of the fire sensors, or when it receives a failure signal from one, and a fire detection signal from the other, It is characterized in that it comprises a fire and smoke preventive device and a control means for driving the smoke exhaust device.

Further, according to the present invention, when the control means receives a fire detection signal from one of the fire sensors and an off signal from the other, only the fire and smoke prevention device is driven to an operation level 1, and a fire is generated from both. When a detection signal is received, or
When the fire detection signal is received from one side and the failure signal is received from the other side, the fire and smoke prevention device is driven to the operation level 2 and the smoke exhaust device is driven.

In the present invention, the control means receives a level 1 output from one of the fire sensors and a level 2 output from the other, or a failure signal from one and a level 2 output from the other. In this case, the fire and smoke preventive device and the smoke exhaust device are driven. Further, the present invention is characterized in that, when the control means receives a level 1 output from one of the fire sensors and an off signal from the other, or when it receives a failure signal from one and a level 1 output from the other, When only the hanging wall of the fire and smoke prevention device is driven, the level 1 output from one side, the level 2 output from the other side, the level 2 output from both sides, or the failure signal from one side, When the level 2 output is received from the other, the fire and smoke preventive device and the smoke exhaust device are driven.

The present invention also provides a fire and smoke preventive device connected to the receiver for preventing fire flame and smoke from spreading, and a receiver provided in each of the monitoring areas defined by the fire and smoke preventive device. Connected to the fire sensor for detecting a fire and sending out a fire detection signal to the receiver, and a smoke exhaust device connected to the receiver for performing a smoke exhaust operation, the receiver including both of the fire sensors. It is characterized by comprising control means for driving the fire and smoke prevention device and the smoke exhaust device when a fire detection signal is received.

Further, according to the present invention, when the control means receives a fire detection signal from one of the fire sensors and an off signal from the other, it drives only the fire and smoke prevention device to the operation level 1, and fires from both. When the detection signal is received, the fire and smoke prevention device is driven to the operation level 2 and the smoke exhaust device is driven.

[0011]

According to the disaster prevention / monitoring apparatus of the present invention having such a structure, a fire sensor is provided in each of the monitoring areas partitioned by the fire / smoke prevention apparatus, and the fire / smoke prevention apparatus is provided based on the output of the fire sensor. Since the smoke control system and the smoke control system are driven and controlled, it is possible to prevent the smoke and smoke control system from driving due to non-fire such as cigarettes or steam, and especially to prevent passersby from accidents at department stores. Can be prevented.

Further, even if one of the fire sensors fails, the fire and smoke preventive device and the smoke exhaust device can be driven in the case of an actual fire to form a fire preventive section to spread the spread of the fire. Can be prevented. As a result, the reliability of the device can be improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views showing a first embodiment of the present invention. First, the configuration will be described. In FIG. 1, reference numeral 1 is a receiver, and a transmission line 2 is drawn from the receiver 1, and an on / off type as a fire sensor is connected to the transmission line 2 via a repeater 3. Are connected to the heat detectors 4 and 5, and analog smoke detectors 6 and 7 are connected as a fire sensor.

The heat detectors 4 and 5 are provided in each of the monitoring areas defined by a fire and smoke preventive device, which will be described later, and detect the fire temperature due to the occurrence of a fire, and the detected temperature exceeds a preset threshold value. When it is fired, it is judged as a fire, and a fire detection signal is sent to the repeater 3. When the repeater 3 receives polling from the receiver 1, it sends fire information to the receiver 1. The analog type smoke detectors 6 and 7 are provided in each of the monitoring areas defined by the fire and smoke preventive devices described later, detect the smoke density due to the occurrence of a fire, and send analog information to the receiver 1 as well as smoke. When the concentration exceeds the threshold value, a fire detection signal is sent to the receiver 1.

The smoke detectors 6 and 7 are provided with a detection section 8, a test section 9, an address section 10, a control section 11 and an input / output section 12. The detector 8 has a light emitting element and a light receiving element. The light emitting element and the light receiving element are arranged in the smoke detection area so that light from the light emitting element does not directly enter the light receiving element. The scattered light is received by the light receiving element,
Detects smoke density.

The control unit 11 controls the output of the detected analog information, and when the smoke density exceeds the threshold value,
Control to output a fire detection signal. In addition, the control unit 11
Controls each part. The test section 9 has a test LED,
The light emitted from the test LED can be directly incident on the light receiving element, and the test LED creates a simulated state of inflow of smoke with a specified concentration to test the analog smoke detectors 6 and 7. To do. When the test is conducted and it is found that the smoke detectors 6 and 7 are out of order, a failure signal is output to the receiver 1.

The address unit 10 detects the calling clock for polling from the receiver 1, compares the count value of the detected clock with its own set value, and if they match, it is determined to be its own calling. . The input / output unit 12 is provided for transmitting analog information and a fire detection signal in response to polling from the receiver 1, and when the address unit 10 determines its own call from polling output by the receiver 1, The analog information and fire detection signal obtained at that time are sent to the receiver 1.

Reference numeral 13 denotes a transmission line connected to the receiver 1. The transmission line 13 is connected to a fireproof shutter 17, a hanging wall 18 and a fireproof door 19 via relays 14 to 16. The fireproof shutter 17, the hanging wall 18 and the fire door 19 constitute a fire and smoke preventive device for preventing fire flame and smoke from spreading, and the analog type smoke detector is provided in each of the monitoring areas defined by the fire and smoke preventive device. 6, 7 and on-off type heat sensors 4, 5 are provided.

The fireproof shutter 17 is driven by a control signal from the receiver 1 and is lowered to a fully closed state to form a fireproof section to prevent the spread of fire. In addition, when the fireproof shutter 17 is lowered by, for example, a quarter of the height of the floor and the ceiling so that the height can be passed by a person,
It is possible to suppress smoke diffusion and secure a safe evacuation route.

The hanging wall 18 is driven by a control signal from the receiver 1 and is lowered to a predetermined height at a ceiling position on the evacuation route toward the emergency exit or the like. By lowering the hanging wall 18, diffusion of smoke along the ceiling surface is suppressed. Fire door 1
9 is arranged in combination with the hanging wall 18 for partitioning the fireproof compartment in the evacuation route, and is closed and driven by a control signal from the receiver 1 to form a fireproof compartment to prevent the spread of fire.

The repeater 14 receives the polling from the receiver 1 to determine the calling of the fireproof shutter 17 connected to itself, and the control signal from the receiver 1 causes the repeater 14 to move down or up. It also controls. The repeaters 15 and 16 receive the polling from the receiver 1 and are connected to the hanging wall 18 or the fire door 1
In addition to discriminating the call of 9, the control signal from the receiver 1 also controls the descent of the hanging wall 18 or the closing of the fire door 19.

Reference numeral 20 is a transmission line connected to the receiver 1, and smoke emission devices 23 and 24 are connected to the transmission line 20 via repeaters 21 and 22, respectively. Smoke exhaust device 23,
24 is driven by a control signal from the receiver 1, and drives a fan provided inside to discharge smoke from the monitoring area to the outside. Also, the smoke exhaust devices 23, 2
When 4 is a pressurized smoke exhausting device, pressurized air is put into the monitoring area to perform smoke exhaust. Further, as the smoke exhausting devices 23 and 24, while introducing pressurized air into the monitoring area from one side,
It also includes a device that exhausts air from the other side by driving a fan.

The receiver 1 includes an input / output unit 25, a control unit (CPU) 26 as control means, and a data table 27.
Is provided. The input / output unit 25 performs polling control so that a fire detection signal and analog information are sequentially sent from the on / off type heat detectors 4 and 5 and the analog type smoke detectors 6 and 7. The data table 27 includes smoke detectors 6 and 7 and heat detectors 4 that output a fire detection signal and a failure signal.
The fireproof shutter 17, the hanging wall 18, the fireproof door 19, and the smoke exhaust devices 23 and 24, which are to be drive-controlled in accordance with No. 5, are stored as a reference table.

The control unit 26 controls the smoke detectors 6, 7 in this example.
When the fire detection signal or the failure signal is received from the data table 27, the fireproof shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24 to be driven are read from the data table 27. In this example, the control unit 26 receives the fire detection signals of both the analog smoke detectors 6 and 7, or receives the failure signal from one and the fire detection signal from the other,
It has a function of driving the fireproof shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24.

Next, FIG. 2 shows a fireproof shutter and a smoke exhaust device. In FIG. 2, reference numeral 17 denotes the fireproof shutter, and the fireproof shutter 17 is installed in a ceiling at a predetermined position of a corridor 28 leading to an emergency staircase or an emergency exit. When the direction of arrow A is the evacuation direction, the smoke detector 6 is installed on the ceiling surface in front of the fireproof shutter 17 with respect to the evacuation direction, and the smoke sensor 7 is installed on the ceiling surface opposite to the fireproof shutter 17. That is, the smoke sensor 6 is provided in the monitoring area 29 defined by the fire prevention shutter 17, and the smoke sensor 7 is provided in the monitoring area 30. The smoke exhaust device 23 is provided in the monitoring area 29, and the smoke exhaust device 24 is provided in the monitoring area 30.

FIG. 2 shows a state in which the fireproof shutter 17 is lowered to the fully closed state by the control signal from the receiver 1, whereby a fireproof section is formed to prevent the spread of fire. Next, FIG. 3 shows the hanging wall and the fire door. Figure 3
In FIG. 3, reference numeral 31 is a corridor leading to an emergency exit or an emergency staircase, and a ceiling wall 32 of the corridor 31 is provided with a hanging wall 18 which is driven to descend, and a double-opening type fire door for closing the corridor 31 in combination with the hanging wall 18. 19 is installed.

The smoke detector 6 is provided on the ceiling surface 32 on the front side of the fire door 19, and the smoke detector 7 is provided on the ceiling surface 32 on the opposite side of the fire door 19. That is, the smoke detectors 6 and 7 are provided in both the surveillance area defined by the fire door 19 and the hanging wall 18, respectively. In FIG. 4, the drooping wall 18 is driven downward by the control signal from the receiver 1, and the fire door 1
9 shows a closed drive state, whereby the corridor 31 is completely closed to form a fireproof compartment, and the spread of fire is prevented.

Next, the operation will be described with reference to FIG. In the first embodiment, analog smoke detectors 6 and 7 are used as the fire sensor, and the smoke detectors 6 and 7 are turned on when the threshold value (level 1) is exceeded. The fire and smoke prevention device operates at a time when receiving the control signal. Smoke detector 6,7
When both are off, fire shutter 17 and hanging wall 1
8, the fire door 19 and the smoke exhaust devices 23 and 24 are not driven.

It is assumed that a fire broke out in the monitoring area 29 of FIG. As shown in FIG. 6 (A), the output of the smoke sensor 6 in the monitored area 29 rises and reaches the threshold value shown by level 1, but the output of the smoke sensor 7 in the monitored area 30 goes to level 1. If it does not reach, the fire shutter 17 and the hanging wall 18 still remain.
The fire door 19 and the smoke exhaust devices 23 and 24 are not driven.

It is assumed that a fire broke out in the monitoring area 29,
This is because there may be a local non-fire caused by cigarettes or steam. Also, if the fire is an initial fire, it is necessary to secure an evacuation route. Since smoke from the fire flows into the monitoring area 30 from the monitoring area 29,
As shown in (B), when the output of the smoke detector 6 exceeds the level 1 and the output of the smoke detector 7 also reaches the level 1, it is determined that an actual fire has occurred, and the fire shutter 17, the drooping. Wall 1
8, the fire door 19 and the smoke exhaust devices 23, 24 are driven.

The state where the fireproof shutter 17 is lowered to the fully closed state is shown in FIG. 2, and the state where the hanging wall 18 is lowered and the fire door 19 is closed are shown in FIG. By forming it, it is possible to prevent the spread of fire. In addition, as shown in FIG. 6C, the monitoring area 2
Although the output of the smoke detector 6 of 9 has reached the level 1, when the smoke detector 7 of the monitoring area 30 is out of order, the fire shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust device 2
Drive 3, 24. This is because, in this case, it may be determined that the fire is an actual fire due to the fail-safe concept.

Conventionally, since one sensor is used, when the sensor fails, the fire and smoke preventive device cannot be driven when a fire occurs. However, in this embodiment, the smoke detector 6 is used. Even if one of the outputs 7 and 7 is out of order, when the output of the other is level 1, the fire and smoke prevention device can be driven, and the spread of fire can be prevented. Next, FIGS. 7 to 8 are views showing a second embodiment of the present invention.

In the second embodiment, analog type fire detectors 6 and 7 are used as fire sensors, and smoke detectors 6 and 7 are used.
Turns on when the threshold value (level 1) is exceeded. The fire and smoke prevention device operates in two stages of operation level 1 and operation level 2. In this embodiment, the control unit 26 as the control means shown in FIG. 1 is provided with an analog smoke detector 6, which is a fire sensor.
When the fire detection signal is received from one of the 7 and the off signal is received from the other, only the fire and smoke prevention device is driven to the operation level 1, the smoke exhaust devices 23 and 24 are not driven, and the fire detection signal is received from both. , Or when a fire detection signal is received from one of them and a failure signal is received from the other, the fire and smoke prevention device and smoke exhaust device 23,
It has a function of driving 24.

FIG. 7 shows the state of the operation level 1 of the fireproof shutter. In the state of this operation level 1, a descending amount H1 (H1: H2) that leaves a height H2 through which a person can pass.
The fire prevention shutter 17 is stopped at the descending position of = 1: 4). At this operation level 1, the diffusion of smoke along the ceiling surface is prevented. The operation level 2 of the fire prevention shutter 17 indicates a state in which the fire prevention shutter 17 is lowered to the fully closed position as shown in FIG.

Next, FIG. 8 shows the operating level 1 of the hanging wall and the fire door. In the state of this operation level 1, the hanging wall 18 descends and the fire door 19 is opened. Therefore, a person can pass through the corridor 31 and the hanging wall 1
8 prevents smoke from spreading. The operation level 2 state is
As shown in FIG. 4, the hanging wall 18 is driven downward, and the fire door 19
Also driven closed. In this operation level 2 state, a fireproof compartment is formed to prevent the spread of fire.

Next, the operation will be described with reference to FIG. When both the smoke detectors 6 and 7 are off, the fire shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust device 2
3 and 24 do not drive. Monitoring area 29 of FIGS. 2 and 7.
Suppose a fire broke out. FIG. 6 shown in the first embodiment.
As shown in (A), when the output of the smoke detector 6 reaches the level 1 and the output of the smoke detector 7 does not reach the level 1, the fire shutter 17 is driven down to the operating level 1 and the hanging wall 18 Is driven down to the operation level 1. In this case, the smoke exhaust devices 23 and 24 are not driven yet.

It is assumed that a fire broke out in the monitoring area 29,
This is because there may be a local non-fire caused by cigarettes or steam. Further, in the initial state of the fire, it is necessary to prevent smoke from spreading and to secure an evacuation route.
Smoke from the fire flowed from the monitoring area 29 into the monitoring area 30, and the output of the smoke sensor 6 exceeded the level 1 and the output of the smoke sensor 7 reached the level 1 as shown in FIG. 6 (B). When it is judged that it is a real fire, the fire prevention shutter 17
Is driven to the operation level 2 to fully close it, to the operation level 2 to close the fire door 19 while the hanging wall 18 is lowered, and the smoke exhaust devices 23 and 24 are driven. As a result, a fireproof section is formed to prevent the spread of fire.

As shown in FIG. 6 (C), although the output of the smoke detector 6 has reached level 1, when the smoke detector 7 fails, the fire prevention shutter 17 is driven to the operation level 2. , The drooping wall 18, the fire door 19 to the operation level 2 and the smoke exhaust devices 23 and 24. This is because in this case, it may be determined that it is a real fire.

Further, in this case, even if one of the smoke detectors 6 and 7 fails, the fire and smoke preventive device and the smoke exhaust device 23 and 24 can be driven to spread the spread of fire. Can be prevented. Next, FIGS. 10 and 11 are views showing a third embodiment of the present invention. In the third embodiment, analog type smoke detectors 6 and 7 having two threshold values (level 1 and level 2) are used as a fire sensor, and the fire and smoke preventive device is activated once upon receiving a control signal. .

In this embodiment, when the control unit 26 of FIG. 1 receives the level 1 output from one of the analog type smoke detectors 6 and 7 which are fire sensors and the level 2 output from the other, or When receiving a failure signal from one side and a level 2 output from the other side, the fireproof shutter 17, the hanging wall 18, the fireproof door 1
9 and the smoke exhausting devices 23, 24 are provided with a function of driving them.

The operation will be described with reference to FIG. Fire protection shutter 1 when smoke detectors 6 and 7 are both off
7, hanging wall 18, fire door 19 and smoke exhaust device 23, 24
Does not drive. It is assumed that a fire broke out in the monitoring area 29 of FIGS. 2 and 4. When the output of the smoke detector 6 has two thresholds, level 1 and level 2,
When the smoke sensor 7 is off, the fire shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24 are not driven.

Further, as shown in FIG. 11A, even when the output of the smoke detector 6 exceeds the level 1 and the output of the smoke detector 7 reaches the level 1, the fireproof shutter 17 and the hanging wall 1 are generated.
8, the fire door 19 and the smoke exhaust devices 23 and 24 are not driven. It is assumed that a fire broke out in the monitoring area 29, but this is because there is a local non-fire due to cigarettes or steam. Also, if the fire is an initial fire, it is necessary to secure an evacuation route.

Next, as shown in FIG. 11 (B), when the output of the smoke detector 6 exceeds level 2 and the output of the smoke detector 7 reaches level 1, it is judged that a real fire has occurred. The fire shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24 are driven. Next, as shown in FIG. 11C, when the output of the smoke sensor 6 reaches level 1 or when the smoke sensor 7 is out of order, the fire shutter 17, the hanging wall 18,
The fire door 19 and the smoke exhaust devices 23 and 24 are not driven.

It is assumed that a fire broke out in the monitoring area 29,
This is because there may be a local non-fire caused by cigarettes or steam. Next, as shown in FIG. 11D, when the output of the smoke sensor 6 reaches level 2 and the smoke sensor 7 fails, the fire shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust device. 23 and 24 are driven.

This is because, in this case, the fire is judged to be a real fire. Also, in this case, smoke detectors 6, 7
Even if one of them fails, the fire and smoke preventive device and the smoke exhaust devices 23 and 24 can be reliably driven, and the spread of fire can be prevented. Next, a fourth embodiment of the present invention is shown in FIG. In the fourth embodiment, analog type smoke detectors 6 and 7 having two threshold values (level 1 and level 2) are used as a fire sensor, and the fire and smoke prevention device operates at a level 1 and a level 3 according to a control signal. Operates in two levels, Level 2.

In this embodiment, the control unit 26 of FIG. 1 receives the level 1 output from one of the analog type smoke detectors 6 and 7 and the off signal from the other, or the level 1 from both of them.
Or when receiving the failure signal from one side and the level 1 output from the other side, only the hanging wall 18 is driven to receive the level 1 output from one side and the level 2 output from the other side. When, or when it receives a level 2 output from both, or when it receives a failure signal from one side and a level 2 output from the other side, the fire shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust device 23, It has a function of driving 24.

The operation will be described with reference to FIG. Fire protection shutter 1 when smoke detectors 6 and 7 are both off
7, hanging wall 18, fire door 19 and smoke exhaust device 23, 24
Does not drive. It is assumed that a fire broke out in the monitoring area 29 of FIGS. 2 and 4. When the output of the smoke detector 6 reaches level 1 or when the smoke detector 7 is off, only the hanging wall 18 is driven downward to drive the fire shutter 17, the fire door 19, and the smoke exhaust devices 23, 24. do not do.

Further, as shown in FIG. 11A shown in the third embodiment, when the output of the smoke sensor 6 exceeds level 1 and the output of the smoke sensor 7 reaches level 1, the drooping Only the wall 18 is driven, and the fire shutter 17, the fire door 19, and the smoke exhaust devices 23 and 24 are not driven. It is assumed that a fire broke out in the monitoring area 29, but this is because there is a local non-fire due to cigarettes or steam. In addition, even if it is not a non-fire, secure an evacuation route for people in the initial state of the fire,
This is because it is necessary to prevent the diffusion of smoke.

Next, smoke from the fire flows into the monitoring area 30 from the monitoring area 29, and the output of the smoke sensor 6 exceeds the level 2 and the output of the smoke sensor 7 levels as shown in FIG. 11 (B). When the number reaches 1, it is determined that the fire is a real one, and the fireproof shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24 are driven. Further, when both the outputs of the smoke detectors 6 and 7 reach the level 2, it is determined that the fire is an actual fire, and the fire shutter 17, the hanging wall 18, and the fire door 19 are determined.
And the smoke exhaust devices 23 and 24 are driven.

Next, as shown in FIG. 11C, when the output of the smoke detector 6 reaches level 1 or the output of the smoke detector 7 is out of order, only the hanging wall 18 is driven downward. Thus, the fire shutter 17, the fire door 19, and the smoke exhaust devices 23 and 24 are not driven. In this case, determine that the fire is non-fire or the initial state, prevent smoke from spreading, and secure an evacuation route.

Next, as shown in FIG. 11 (D), when the output of the smoke sensor 6 reaches level 2 or the smoke sensor 7 is out of order, it is judged that an actual fire has occurred, and fire prevention is performed. Shutter 1
7, hanging wall 18, fire door 19 and smoke exhaust device 23, 24
To drive. In this case, even if one of the smoke detectors 6 and 7 fails, the fire and smoke prevention device and the smoke exhaust device 23 and 24.
Can be driven, and the spread of fire can be prevented.

Next, FIGS. 13 and 14 show the fifth embodiment of the present invention.
It is a figure which shows an Example. In this embodiment, the on / off type heat detectors 4 and 5 having one threshold value (level 1) shown in FIG. 1 were used as the fire sensor. It should be noted that the smoke detectors of the on / off type may be used instead of the heat detectors 4 and 5. The fire and smoke prevention device is activated at once by the control signal.

Further, when the control unit 26 of FIG. 1 receives the fire detection signals of both the heat detectors 4 and 5, the fire prevention shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust device 2 are received.
It has a function to drive 3,24. FIG.
The operation will be described with reference to. When the outputs of the heat sensors 4 and 5 are both off, the fire shutter 17, the hanging wall 18, the fire door 19, and the smoke exhaust devices 23 and 24 are not driven.

It is assumed that a fire broke out in the monitoring area 29 shown in FIGS. As shown in FIG. 14A, the heat detector 4
When the output of the heat sensor 5 does not reach the level 1 but the output of the heat detector 5 reaches the threshold shown by the level 1, the fire shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust devices 23, 2
Do not drive 4. It is assumed that a fire broke out in the monitoring area 29, but this is because there is a local non-fire due to cigarettes or steam. Also, when the fire is the initial fire, it is necessary to secure an evacuation route for people.

Next, heat from a fire flows into the monitoring area 30 from the monitoring area 29, and as shown in FIG.
When the output of the heat detector 4 exceeds level 1 and the heat detector 5 reaches level 1, it is determined that a real fire has occurred, and the fire shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust device 23 are determined. , 24 are driven. In this way, a fireproof section is formed to prevent the spread of fire from spreading.

Next, FIG. 15 shows a sixth embodiment of the present invention. Also in this embodiment, the on / off type heat detectors 4 and 5 having one threshold value (level 1) shown in FIG. 1 are used as the fire sensor, but an on / off type smoke detector may be used. The fire and smoke prevention device operates in two stages of operation level 1 and operation level 2 according to the control signal.

Further, when the control section 26 of FIG. 1 receives a fire detection signal from one of the heat detectors 4 and 5 and an off signal from the other, it drives the fire and smoke prevention device to the operation level 1, and from both of them. When the fire detection signal is received, the fire and smoke preventive device is driven to the operation level 2 and the smoke exhaust devices 23 and 24 are driven. The operation will be described with reference to FIG.

When the outputs of the heat detectors 4 and 5 are both off, the fireproof shutter 17, the hanging wall 18, the fire door 19 and the smoke exhaust devices 23 and 24 are not driven. It is assumed that a fire broke out in the monitoring area 29 of FIGS. 2 and 4. As shown in FIG. 14A shown in the fifth embodiment, when the output of the heat sensor 4 reaches the threshold value shown by level 1, but the output of the heat sensor 5 does not reach level 1, , The fire shutter 17, the hanging wall 18, and the fire door 19 are driven to the operation level 1, but the smoke exhaust devices 23 and 24 are not driven.

It is assumed that a fire broke out in the monitoring area 29,
This is because there may be a local non-fire caused by cigarettes or steam. Also, when the fire is an initial fire, it is necessary to secure an evacuation route for people. Next, surveillance area 29
The heat from the fire flows into the monitored area 30 from the
As shown in (B), when the output of the heat detector 4 exceeds level 1 and the heat detector 5 reaches level 1, it is determined that an actual fire has occurred, and the fire prevention shutter 17, the hanging wall 18, The fire door 19 is driven to the operation level 2, and the smoke exhaust device 2
Drive 3, 24. In this way, a fireproof section is formed to prevent the spread of fire from spreading.

As the sensor, an appropriate sensor such as a gas sensor or a heat / smoke composite sensor can be adopted as long as it can detect a change in a physical phenomenon caused by a fire.

[0061]

As described above, according to the present invention, the drive control of the fire and smoke preventive device is performed based on the output of the fire sensor provided in each of the monitoring areas defined by the fire and smoke preventive device. Therefore, the fire and smoke prevention device is not driven by a non-fire caused by cigarettes or steam, and it is possible to prevent a passerby from being involved in an accident especially at a department store.

Further, even if one of the fire sensors fails, the fire and smoke preventive device can be driven, and the spread of fire can be prevented.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a fire prevention shutter and a smoke exhaust device.

FIG. 3 is a diagram showing a hanging wall and a fire door.

FIG. 4 is a diagram showing a fully closed state of a hanging wall and a fire door.

[Fig. 5] Operation explanatory diagram

FIG. 6 is a diagram showing a state of an analog smoke detector.

FIG. 7 is a diagram showing a state of the operation level 1 of the fire protection shutter according to the second embodiment of the present invention.

FIG. 8 is a diagram showing a state of the operating level 1 of the hanging wall and the fire door.

[Fig. 9] Operation explanatory diagram

FIG. 10 is an operation explanatory diagram according to the third embodiment of the present invention.

FIG. 11 is a diagram showing a state of an analog smoke detector.

FIG. 12 is an operation explanatory diagram according to the fourth embodiment of the present invention.

FIG. 13 is an operation explanatory diagram according to the fifth embodiment of the present invention.

FIG. 14 is a diagram showing a state of an on-off type heat sensor.

FIG. 15 is an operation explanatory diagram according to the sixth embodiment of the present invention.

[Explanation of symbols]

 1: Receiver 2, 13, 20: Transmission line 3, 14-16, 21, 22: Repeater 4,5: On / off type heat sensor (fire sensor) 6, 7: Analog type smoke sensor (fire Sensor: 8: Detection part 9: Test part 10: Address part 11: Control part 12, 25: Input / output part 17: Fire shutter (fire and smoke prevention device) 18: Drop wall (fire and smoke prevention device) 19: Fire door ( Fire and smoke prevention device) 23, 24: Smoke exhaust device 26: Control unit (control means) 27: Data table

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location G08B 17/00 D 4233-5G

Claims (6)

[Claims] 1. A fire and smoke prevention device connected to a receiver to prevent the spread of fire flames and smoke, and a fire prevention and smoke prevention device provided in each of the monitoring areas defined by the fire and smoke prevention device and connected to the receiver. And a smoke sensor that has a self-diagnosis function and that outputs a failure signal to the receiver when a failure occurs, and a smoke exhaust device that is connected to the receiver and performs a smoke exhaust operation, and the receiver is When the fire detection signals of both the fire sensors are received, or when one of them receives a failure signal and the other receives a fire detection signal, a control means for driving the fire and smoke prevention device and the smoke exhaust device is provided. Disaster prevention monitoring device characterized by 2. When the control means receives a fire detection signal from one of the fire sensors and an off signal from the other, it drives only the fire and smoke prevention device to an operation level 1 and receives a fire detection signal from both of them. Or when a fire detection signal is received from one side and a failure signal is received from the other side, the fire and smoke prevention device is driven to an operation level 2 and the smoke exhaust device is driven. 1 disaster prevention monitoring device. 3. When the control means receives a level 1 output from one of the fire sensors and a level 2 output from the other, or when it receives a failure signal from one and a level 2 output from the other, The disaster prevention monitoring device according to claim 1, wherein the fire and smoke prevention device and the smoke exhaust device are driven. 4. When the control means receives a level 1 output from one of the fire sensors and an off signal from the other, or when it receives a failure signal from one and a level 1 output from the other, Drive only the hanging wall of the fire and smoke prevention device,
When one receives a level 1 output, the other receives a level 2 output, or both receive a level 2 output, or one receives a failure signal and the other receives a level 2 output, The disaster prevention monitoring device according to claim 1, wherein the fire and smoke prevention device and the smoke exhaust device are driven. 5. A fire and smoke preventive device connected to a receiver to prevent the spread of fire flames and smoke, and a fire preventive smoke preventive device provided in each of the monitoring areas defined by the fire and smoke preventive device and connected to the receiver. A fire sensor that detects and sends out a fire detection signal to the receiver, and a smoke exhaust device that is connected to the receiver and performs a smoke exhaust operation, and the receiver receives the fire detection signals of both of the fire sensors. A disaster prevention monitoring device comprising control means for driving the fire and smoke preventive device and the smoke exhaust device when received. 6. When the control means receives a fire detection signal from one of the fire sensors and an off signal from the other, it drives only the fire and smoke prevention device to an operation level 1 and receives a fire detection signal from both of them. 6. The disaster prevention monitoring device according to claim 5, wherein the fire and smoke preventive device is driven to an operation level 2 and the smoke exhaust device is driven at the same time.