JPS5825470B2 - fire extinguisher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fire extinguishing system using a fire extinguishing agent discharge nozzle called a turret nozzle, monitor nozzle or water cannon.

Conventional fire extinguishing equipment of this type uses a turret nozzle, monitor nozzle, or water cannon, which can freely rotate horizontally, vertically, and other extinguishing agent discharge nozzles, to target objects to be extinguished, such as plant equipment, tank bases, sea berths, buildings, and tunnels. In the event of a fire, the extinguishing agent discharge nozzle can be manually rotated directly, or remotely rotated using a control stick from a position where the discharge nozzle and the object to be extinguished can be visually confirmed, and the nozzle aiming at the fire point. fire extinguishing agents such as powder, foam or water.

However, with this kind of fire extinguishing system, the extinguishing agent discharge nozzle must be operated near the fire point, whether it is operated manually or remotely using a control stick, and the operator is always at risk of fire or explosion. was exposed to.

In addition, when remotely controlling the extinguishing agent discharge nozzle using a control stick, the distance between the operator and the nozzle makes it difficult to aim the nozzle at the fire point, which takes time. There was a major drawback in that it took time for the fire to reach the discharge nozzle or its operating rod, making it impossible to extinguish the fire in its early stages.

In view of the points in the first half, this invention monitors the state of the object by rotating a television camera and transmitting an image of the object to be extinguished by a receiver to monitor the condition of the object to be extinguished in the event of a fire. When the object is captured by the shooting sight, the rotation of the TV camera is stopped and the focal length of the TV camera lens is changed until the image of the object to be extinguished at the fire point reaches a predetermined size on the screen of the receiver. The position of the fire spot is determined by detecting the rotation angle and elevation angle of the TV camera and the focal length of the lens at that time, and the fire extinguishant discharge nozzle is controlled based on the determination result to aim the discharge at the fire spot. By doing so, the present invention provides a fire extinguishing system that can safely aim a fire extinguishing agent discharge nozzle at the fire point and quickly extinguish the fire without exposing the fire to the danger of fire or explosion in the early stages of a fire. be.

An embodiment of the present invention will be described below with reference to the drawings.

1 is a television camera equipped with a zoom lens whose focal length is changed by a servo mechanism and monitors an object to be extinguished (not shown); 1 is a rotation mechanism that rotates the television camera 1 horizontally and vertically; and rotation of the camera 1. A camera rotation device having a detection circuit that detects angles and elevation angles and outputs the signals; 2 and 3 are extinguishing agent discharge nozzles such as turret nozzles, monitor nozzles, or water cannons that discharge extinguishing agents to objects to be extinguished; 2; □
.

31 is a nozzle rotation device that rotates the extinguishing agent discharge nozzles 2 and 3 horizontally and vertically, respectively; 4 is a fire extinguishing agent supply source that supplies extinguishing agent such as powder, foam, or water to the extinguishing agent discharge nozzles 2 and 3; .

Reference numeral 5 denotes a control device installed in the disaster prevention center 6 of the central management office, and 51 is provided with various switches (not shown) such as an image receiving switch, a zoom control switch, a camera rotation switch, a nozzle aiming switch, and a discharge switch. Control stick, 5
Reference numeral 2 denotes a receiver that receives images transmitted from the television camera 1; 53 denotes a zoom control unit that outputs a zoom control signal to the servo mechanism of the television camera 1 by operating a zoom control switch; and 54, a zoom control unit outputs a zoom control signal to the servo mechanism of the television camera 1 by operating a camera rotation switch. Camera rotation device 1. A rotation control section 55 outputs a rotation signal to control the rotation mechanism of the camera rotation device 11, and 55 is composed of an arithmetic unit such as a microprocessor, and detects a zoom ratio signal output from the servo mechanism of the zoom lens and a detection circuit of the camera rotation device 11. A fire position discriminating unit 56 is configured by a performance device, etc., and calculates the coordinates of the fire position based on the rotation angle signal and the elevation angle signal output from the fire position discriminating unit 55 and outputs the position signal. The nozzle rotation device selects the most suitable extinguishing agent discharge nozzle for extinguishing the fire spot, determines the rotation angle and elevation angle of the selected discharge nozzle relative to the fire spot, and sends an aiming control signal that instructs the rotation angle and elevation angle by operating the nozzle aiming switch. 20, 3, and 57 is a discharge control section that outputs a discharge control signal to the fire extinguishing agent supply source 4 based on the output of the nozzle sight control section 56 and operation of the discharge switch.

7 receives a fire signal from a fire detector or a manual notification device (not shown) installed along the object to be extinguished, or a notification from an emergency telephone.

Next, the operation of this fire extinguishing system will be explained.

Turn on the image receiving switch on the operation console 51 and turn on the TV camera 1.
At the same time, the camera rotation switch is turned on to cause the rotation control section 54 to output a rotation signal.

In response to this rotation signal, the camera rotation device 1□ rotates the television camera 1, and the television camera 1 sequentially transmits images of each part of the object to be extinguished to the receiver 52.

In such a state, when the fire detector installed along the object to be extinguished is activated and the fire receiver 7 is displayed and notified that a fire has occurred in the object to be extinguished, the manager can monitors the object to be extinguished, and when it is confirmed that the fire spot has been captured by the TV camera 1 with its photographic aim because the image of the fire spot is reflected in the center of the screen of the receiver 52, the camera rotation switch is turned off. Stop outputting the rotation signal.

By stopping the output of this rotation signal, the camera rotation device 11 stops the rotation of the TV camera 1 and fixes the fire spot with the shooting sight, and also calculates the rotation angle and elevation angle of the TV camera 1 at that time. It is detected and output to the fire position determination section 55.

Next, the zoom control switch is operated to the telephoto or wide-angle side until the size of the image of the object to be extinguished at the fire spot by the TV camera 1 received by the receiver 52 reaches a predetermined size, and the zoom control unit 53 sends a zoom control switch. output.

This zoom control signal operates the servo mechanism of the television camera 1 to change the focal length of the zoom lens, so that the size of the object to be extinguished at the fire point becomes a predetermined size on the screen of the receiver 52, and the zoom control signal is activated. When the output is stopped, the servo mechanism stops changing the focal length of the zoom lens, detects the zoom ratio of the zoom lens at that time, and outputs it to the fire position determination section 55.

The fire position determination unit 55 calculates the position coordinates of the fire spot based on the zoom ratio signal output from the television camera 1 and the rotation angle signal and elevation angle signal output from the camera rotation device 11, and determines the location by the nozzle aiming control unit 56. A signal is output, and based on this position signal, the nozzle aiming control unit 56 selects the extinguishing agent discharge nozzle most suitable for extinguishing the fire spot, for example, discharge nozzle 2, and rotates the discharge nozzle 2 to aim the discharge at the fire spot. Calculate angle and elevation.

When the nozzle aiming switch is turned on, the nozzle aiming control section 56 outputs an aiming control signal instructing the rotation angle and elevation angle of the discharge nozzle to the rotating device 21 of the discharge nozzle 2.

The rotation device 21 rotates and fixes the extinguishing agent discharge nozzle 2 to a predetermined angle under the control of the aiming control signal.

When the discharge switch is turned on, the discharge control section 5T generates a discharge control signal for supplying extinguishing agent to the extinguishing agent discharge nozzle 2 based on the on-off of the discharge switch and the aiming control signal inputted from the nozzle aiming control section 56. is outputted to the extinguishing agent supply source 4, and the extinguishing agent supply source 4 supplies the extinguishing agent to the discharge nozzle 2 under the control of the discharge control signal, and the discharge nozzle 2 discharges the extinguishing agent to the fire spot.

In the above embodiment, instead of automatically rotating the television camera 1, a switch may be provided on the console 51 to instruct the rotation direction, and the switch may be used to rotate the camera 1 in any direction. The television camera 1 may have a plurality of lenses with different focal lengths instead of a zoom lens.

Alternatively, without rotating the extinguishing agent discharge nozzle, a number of discharge nozzles with different discharge targets may be installed, and the one most suitable for extinguishing the fire point may be selected from these discharge nozzles. It is also possible to use a device that swings around the discharge aim depending on the supply pressure, etc.

Furthermore, if there is a risk that the extinguishing agent discharged from the extinguishing agent discharge nozzle may be deflected by the wind, a measuring device that measures the wind direction and wind speed, and a calculation device that calculates the degree of deflection from the measured values of this measuring device, etc. A measuring section may be provided, and the discharge aim of the fire extinguishing agent discharging nozzle may be corrected automatically or by an operator console based on the measurement result of the deflection measuring section.

According to this invention, the rotation angle and elevation angle of the TV camera when the TV camera captures the fire spot with the shooting sight are detected, and the size of the image of the object to be extinguished at the fire spot is sent from the TV camera to the receiver. The focal length of the lens is detected when the lens reaches a predetermined size, and the position of the fire spot is determined from the rotation angle and elevation angle of this television camera as well as the focal length of the lens. Based on this determination result, the fire extinguishing agent discharge nozzle is Fires are extinguished by controlling the discharge aiming point to be set at the fire point, so the fire extinguishing agent discharge nozzle can be safely and reliably aimed at the fire point without being exposed to the danger of fire or explosion in the early stages of a fire. A fire extinguishing system that can quickly extinguish a fire can be obtained.

[Brief explanation of drawings]

The figure is a system diagram of one embodiment of the fire extinguishing system according to the present invention. 1...Television camera equipped with a lens whose focal length changes, 1□...Camera rotation device, 2,3...
...Extinguishing agent discharge nozzle, 20,3, ...
Nozzle rotating device, 4... Extinguishing agent supply source, 5...
... Control device, 51 ... Operation console, 52 ...
... Image receiver, 53 ... Lens control section, 54
... Rotation control section, 55 ... Position determination section, 56 ... Nozzle aiming control section, 57 ...
・Release control section.

Claims (1)

[Scope of Claims] 1. A television camera equipped with a lens whose focal length changes and rotates to monitor an object to be extinguished, a fire extinguishing agent discharge nozzle that discharges a fire extinguishing agent, and a fire extinguishing agent supplied to the fire extinguishing agent discharge nozzle. a fire extinguishing agent supply source that receives images from the television camera, a rotation control unit that controls rotation of the television camera, and a lens control unit that changes the focal length of the lens of the television camera;
When the above-mentioned TV camera captures the fire spot with its shooting sight and the image of the object to be extinguished at the fire spot becomes a predetermined thickness on the receiver screen, the rotation angle and elevation angle of the TV camera and the focal length of the lens are detected. a position determination unit that determines the location of the fire point by determining the location of the fire point; a nozzle aiming control unit that determines the discharge aim of the fire extinguishant discharge nozzle at the fire location based on the determination result of the position determination unit; A fire extinguishing device comprising: a control device comprising a discharge control section that controls the discharge of extinguishing agent from a fire extinguishing agent discharge nozzle at a predetermined location; 2. The fire extinguishing agent discharge nozzle has a rotating mechanism, and the nozzle aiming control section is configured to control the rotation of the rotating mechanism to aim the discharge of the nozzle at the fire spot. Fire extinguishing equipment as described in section. 3. A plurality of extinguishing agent discharge nozzles are provided with different discharge aims, and the nozzle aiming control section is configured to select a fire extinguishing agent discharge nozzle having a fixed discharge aim at the fire point from the plurality of extinguishing agent discharge nozzles. A fire extinguishing device according to claim 1. 4. Claim 1, wherein the lens that changes the focal length of the television camera is a zoom lens whose focal length is continuously changed by a servo mechanism, and the lens control section is configured to control the servo mechanism. Fire extinguishing equipment as described in section. 5. The fire extinguishing device according to claim 1, wherein the lens for changing the focal length of the television camera is constituted by a plurality of lenses having different focal lengths, and the lens control section is configured to sequentially switch the plurality of lenses.