JPH0421502B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention divides and sets a monitoring area for each element of a fire detector in advance, and scans only the monitoring area corresponding to the element that detected a fire based on detection information with a fire source detection device, The present invention relates to an automatic fire extinguishing system that efficiently detects the position of a fire source, directs a nozzle toward the fire source, and emits extinguishing agent to automatically extinguish the fire.

When a fire is detected by a fire detector, the inventors of the present application further accurately detect the location of the fire source using a pair of fire source detection devices, and calculate the location of the fire source based on the detection information from the fire source detection devices. We have proposed an automatic fire extinguishing system that automatically extinguishes the fire by directing the nozzle to the fire source position and ejecting extinguishing agent or extinguishing liquid based on the calculation results. Each of the pair of fire source detection devices includes a detector for detecting a fire source, vertical control means for controlling the detector in a vertical direction, and horizontal control means for controlling the detector in a horizontal direction. When a fire detector detects a fire, it first operates the vertical control means of each fire source detection device to direct each detector directly below, and then operates the horizontal control means of each fire source detection device. Operate it to scan the room horizontally to search for the source of fire. If a fire source is not detected by the above operations, the vertical direction control means of each fire source detection device is further operated to deviate each detector upward by a predetermined angle from directly below, and then the horizontal direction control means is operated. Each detector was scanned horizontally to search for the fire source, and the same operation was then repeated to detect the fire source. In other words, the vertical deviation angle of a pair of detectors is changed in stages, and scanning is performed in the horizontal direction at each set deviation angle, until the vertical deviation angle reaches the fire source position. At the time, the fire source was detected by horizontal scanning.

However, if the fire source is located far away from directly below the detector, it takes time for the vertical deviation angle of each detector to reach the fire source position, and there is a delay in detecting the fire source. If initial extinguishment could not be achieved due to the occurrence of fire, there was a risk of the fire spreading.

The present invention has been made in view of the above-mentioned problems, and aims to provide an automatic fire extinguishing system that promptly detects the position of a fire source and reliably performs initial extinguishing.

To achieve this objective, the present invention provides a plurality of fire sources that scan vertically and horizontally within a monitored area to detect fire sources based on information from a fire detector that detects the occurrence of fire in the monitored area. Detection positions are arranged at predetermined intervals, a control unit drives a fire source detection device based on detection information from the fire detector, and calculates the position of the fire source based on the fire source information from the fire source detection device; In an automatic fire extinguishing system that directs the nozzle to the fire source position according to the calculation result and emits extinguishing agent to extinguish the fire, a monitoring area is divided and set in advance for each fire detector element, and detection from the fire detector element is performed. Based on the command from the control unit based on the information, the fire source detection device scans only the monitoring area corresponding to the element that detected the fire, and detects the position of the fire source.

Embodiments of the present invention will be described below based on the drawings.

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

First, to explain the configuration, 1 is an automatic fire extinguishing device, and a pair of fire source detection devices 3 and 4 are arranged on a pedestal 2 at a predetermined interval.
is equipped with a detector 3a for detecting a fire source, a vertical control means 3b for controlling the detector 3a in the vertical direction, and a horizontal control means 3c for controlling the detector 3a in the horizontal direction. The device 4 includes a detector 4a for detecting a fire source, a vertical control means 4b for vertically controlling the detector 4a, and a horizontal control means 4c for controlling the detector 4a horizontally. Each of the vertical direction control means 3b, 4b and the horizontal direction control means 3c, 4c independently controls the corresponding detector 3a, 4a, and each detector 3a, 4a is vertically controlled by a command from a control section, which will be explained later. Detect the location of the fire source by scanning in the direction and horizontal direction. Reference numeral 5 denotes a nozzle device installed at the center of rotation of the pedestal 2, which includes a nozzle 5a that emits extinguishing agent, and a radiation direction control means 5b that directs the nozzle 5a to the fire source position detected by the fire source detection devices 3 and 4. and a radiation state control means 5c that controls the radiation state by adjusting the opening degree of the injection port of the nozzle 5a according to the distance to the fire source. Reference numeral 6 denotes a direction control means, which controls the rotation of the pedestal 2 in the horizontal direction to control the fire source detection devices 3 and 4.
and the nozzle device 5 are integrally opposed to the fire source position,
When a fire is detected, horizontal rotation is controlled to operate only within the pre-divided fire monitoring area. 7
is a buzzer, 8 is a lamp, and 9 is a fire detector for overall monitoring.The fire detector 9 has two built-in detection elements, and the monitoring area is divided into two, each with an area number.
1 and Area No. 2 will be exclusively monitored. fire detector 9
When one of the detection elements built in detects a fire, it sends the detection information to the circuit section 10, and in response to a command from the circuit section 10, the buzzer 7 and lamp 8 are driven to display an alarm, and the direction The control means 6 is operated to direct the fire source detection devices 3, 4 and the nozzle device 5 together toward the center of the fire outbreak area (for example, area No. 2). Further, the circuit section 10 has a built-in control section in which programs such as various control programs and arithmetic programs are set using a microcomputer. The direction control means 3c, 4c are controlled within the fire occurrence area to divide and set the fire occurrence area for each fire source detection device 3, 4 to detect the fire source, and the fire source detection device 3, 4 is controlled to detect the fire source. The fire source detection device, 3, 4, and nozzle device 5 are integrated by inputting the detection information, calculating the position of the fire source, and controlling the direction control means 6 again based on the calculation result to rotate the pedestal 2. Directly face the fire source. 11 is a tank for storing a fire extinguishing agent or a fire extinguishing liquid; 12 is a pump that sends a fire extinguishing agent or a fire extinguishing liquid from the tank 11 to the nozzle 5a;
Reference numeral 3 denotes a motor, and the motor 13 is operated by a command from the control section, operates the fire pump 12, and supplies a fire extinguishing agent or a fire extinguishing liquid to the nozzle 5a.

FIG. 2 is a block diagram showing the circuit configuration in FIG. 1. Fire detector 9 and detectors 3a, 4
The detection information from a is input to the control unit 17 via the input interface 15. The control unit 17 incorporates a microcomputer and is set with a control program and an arithmetic program. When detection information from the fire detector 9 is input, the control unit 17 decodes the detection information and outputs a control signal via the interface 16. The signal is output to the vertical control means 3b, 4b and the horizontal control means 3c, 4c, and instructs the fire source detection devices 3, 4 to scan only the area where the fire has occurred to detect the fire source. Further, the control unit 17 inputs the fire source information from the fire source detection devices 3 and 4, calculates the position of the fire source, and outputs a control signal based on the calculation result.
6, the direction control means 6, the radial direction control means 5
b, to the radiation state control means 5c and the motor 13 to command fire extinguishing activities. Vertical control means 3
b and 4b independently control the corresponding detectors 3a and 4a in the vertical direction. Horizontal control means 3
c and 4c independently control the corresponding detectors 3a and 4a in the horizontal direction. The direction control means 6 controls the rotation of the pedestal 2 to cause the nozzle device 5 and the fire source detection devices 3 and 4 to integrally face the fire source position.
The radial direction control means 5b controls the injection port of the nozzle 5a in the vertical direction and directs the nozzle 5a toward the fire source position. The radiation state control means 5c controls the nozzle 5
The radiation state is controlled by adjusting the opening degree of the injection port a. The motor 13 drives the fire extinguishing pump 12 to deliver extinguishing agent to the nozzle 5a. The alarm unit 18 sounds the buzzer 7 and lights the lamp 8 based on a command from the control unit 17 to warn of the occurrence of a fire.

FIG. 3 is a flowchart of the control unit 17, and FIG. 4() is a plan view showing the operation of the present invention.
Figure () shows its side view.

Hereinafter, the operation of the present invention will be explained with reference to FIGS. 3, 4() and 4().

In FIG. 3, block a sets the initial state in normal times. For example, while controlling the horizontal direction control means 3c, 4c, the direction control means 6
The rotation angle of the pedestal 2 is adjusted under the control of the detector 3a,
4a and the nozzle 5a are integrally oriented in the front direction. Further, the vertical deviation angles of the detectors 3a and 4a are both directed directly below. In block b, the fire detector 9 detects the occurrence of fire in monitoring areas No. 1 and 9.
For example, if a fire breaks out in area No. 2 as shown in Figure 4(), the fire detector 9 will operate to detect the area, and the fire will be detected from block B to block C.
Then, the direction control means 6 is controlled. The pedestal 2 is rotated horizontally by the control operation of the direction control means 6, and the detectors 3a, 4a and the nozzle 5a are integrated into the area No. 2.
, and commands the detectors 3a and 4a to detect the fire source F. That is, the vertical deviation angle is set so that the detector 3a is directly below the detector 4a.
The horizontal direction control means 3c and 4c are operated to maintain the vertical deviation angle of each detector 3a and 4a at the set value while sequentially moving only within area No. 2. Scan horizontally. In block d, it is determined whether or not the fire source F is detected by the detector 3a. If the fire source F is not detected, the process proceeds to block f and the detection information from the detector 4a is deciphered. If the detection information of the fire source F is not obtained even in block f, the process returns to block d again, and the vertical direction control means 3b and 4b are driven to change the vertical directivity angle of each detector 3a and 4a by a predetermined angle. While deflecting it upward, the horizontal direction control means 3b and 4b are driven to scan only the area No. 2 in the horizontal direction.

Similarly, the vertical directivity angles of the detectors 3a and 4a are gradually shifted upward by a predetermined angle, and only the area No. 2 is horizontally scanned at each deflection angle to detect the fire. Repeat the detection operation for source F.
When the detector 3a detects the fire source F, the process proceeds from block d to block e, and the vertical direction control means 4b is driven to direct the detector 4a in the direction of the fire source F.

Block h judges whether the fire source information from the detectors 3a and 4a is intermittent for a predetermined period of time, and if the fire source information cannot be obtained intermittently, it is determined to be noise and returns to block a. monitor the occurrence of fire. When the fire source information from the detectors 3a and 4a is obtained intermittently for a predetermined period of time, it is determined that there is a fire, and the process proceeds to block i, where the buzzer 7 sounds and the lamp 8 is turned on to display an alarm.
Further, the process proceeds to block j, where the direction control means 6 is driven to control the rotation of the pedestal 2, thereby causing the fire source detection devices 3, 4 and the nozzle device 5 to face the fire source F.

In block k, as the pedestal 2 rotates, the detector 3
A, 4a is readjusted as the pointing direction deviates from the fire source F, and the horizontal direction control means 3c,
4c is operated to make the detectors 3a, 4a face the fire source F. In block m, the detectors 3a and 4a are facing the fire source F and collect the fire source information, and based on the fire source information, the exact location of the fire source, that is, the distance to the fire source F and the fire source are detected. Calculate the height of the source. The nozzle device 5 is controlled based on the result of this calculation, and in block n, the radial direction control means 5b is operated to control the vertical direction of the nozzle 5a to direct the injection port in the direction of the fire source F. Then, the radiation state control means 5c is operated to adjust the opening degree of the injection port of the nozzle 5a to control the radiation state in which the extinguishing agent is emitted. In block q, the motor 13 is started and the fire extinguishing pump 12 is operated to eject extinguishing agent from the nozzle 5a, thereby starting fire extinguishing activities. detector 3a,
4a monitors the extinguishing state, and if the fire is not completely extinguished, returns from block R to block M, collects fire source information from detectors 3a and 4a again, calculates the fire source distance, and calculates the calculation result. Based on this, the radiation direction of the nozzle 5a and the radiation image pair are readjusted to continue firefighting operations. When block r confirms that the fire has been extinguished, the process proceeds to block s, where the motor 13 and fire pump 12 are turned off to stop firefighting activities, and at block t, the buzzer 7 and lamp 8 are turned off.
Turn off to stop the alarm.

In the embodiment of the present invention, the fire detector 9 was constructed using two detection elements that separately and independently monitor the areas obtained by dividing the monitoring area into two, that is, area No. 1 and area No. 2. Using an appropriate number of detection elements of three or more, the monitoring area is divided into the number of areas corresponding to each detection element, and when a fire occurs, the fire source detection unit 3 and 4 are instructed to activate the fire equipment when a fire occurs. By scanning only the area, fire source detection can be further accelerated.

Also, in the initial setting of block a in Fig. 3, the detector 3
Although the vertical deviation angles of a and 4a are both oriented directly downward, they can be set in any appropriate direction in consideration of the shape, size, etc. of the monitoring area.

Next, the effect will be explained.

A plurality of fire source detection devices are placed at predetermined intervals and scan the monitoring area vertically and horizontally to detect fire sources based on information from a fire detector that detects the occurrence of fire in the monitoring area. Based on the detection information from the fire detector, the control unit drives the fire detection device and calculates the position of the fire source based on the fire source information from the fire detection device, and moves the nozzle to the fire source position according to the calculation result. In an automatic fire extinguishing system that extinguishes fires by directing fire extinguishing agents, etc., a monitoring area is divided and set in advance for each element of the fire detector, and a fire is detected by commands from the control unit based on the detection information from the elements of the fire detector. By scanning the fire source detection device to detect the position of the fire source only in the monitoring area corresponding to the element that detected the fire, the fire source can be detected quickly and the initial fire extinguishment can be carried out reliably.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
Fig. 2 is a block diagram showing the circuit configuration in Fig. 1, Fig. 3 is a flowchart, Fig. 4 () is a plan view showing the operation of the embodiment shown in Fig. 1, and Fig. 4 () is a It is a side view in figure (). 1: Automatic fire extinguishing device, 2: Frame, 3, 4: Fire source detection device, 3a, 4a: Detector, 3b, 4b: Vertical direction control means, 3c, 4c: Horizontal direction control means 5: Nozzle device, 6: Directional control means, 7: buzzer, 8: lamp, 9: fire detector, 10: circuit section, 11: tank, 12: fire pump, 13: motor, 15: input interface, 16: output interface, 17: Control unit, 18: Alarm unit,
F: Fire source.

Claims (1)

[Claims] 1. A plurality of fire source detection devices that scan the monitoring area in the vertical and horizontal directions to detect fire sources based on information from a fire detector that detects the occurrence of a fire in the monitoring area. are arranged at a predetermined interval, and a control unit calculates the position of the fire source based on the detection information from the fire detector and the drive of the fire source detection device and the fire source information from the fire source detection device, In an automatic fire extinguishing system that directs a nozzle to a fire source position according to the calculation result and emits extinguishing agent, etc. to extinguish the fire, a monitoring area is divided and set in advance for each element of the fire detector, and a monitoring area is set in advance for each element of the fire detector. According to a command from the control unit based on detection information from the fire source, the fire source detection device scans only the monitoring area corresponding to the element that detected the fire, and detects the position of the fire source. automatic fire extinguishing system.