JP2000011272A - Fire monitoring system for parking lot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire prevention system which can cope with the initial stages of a fire of a mechanical parking lot. SOLUTION: A change in a physical phenomenon by a fire such as a smoke or smell generated by plural vehicles in parking space 3 is positively taken in by a step direction and a column direction sampling tubes W and D and so a smoke detection device V immediately sensors a fire. A position specification device decides what column and step the parking space 3 is in. Thus, it is possible to immediately specify a position Rmn of the parking space which has a vehicle having a fire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disaster prevention system for a mechanical parking lot.

[0002]

2. Description of the Related Art In recent years, a so-called mechanical parking lot has been used in which a vehicle is automatically taken in and out of a multistage parking space by a cargo handling device. In this parking lot, high-density parking can be performed without human intervention, so that the land can be effectively used, and it is attracting attention.

[0003] In this mechanical parking lot, since parking spaces are arranged at high density, there is usually little room for humans to enter, and in the event of a fire, it is impossible for the manager to rush. Therefore, in a mechanical parking lot, it is usual to provide a gas fire extinguishing system that emits an inert gas to the entire volume to extinguish suffocation.

[0004] However, the mechanical parking lot is relatively large and requires a considerable amount of space just to install an inert gas cylinder, and an efficient disaster prevention system is desired. As a technique for improving such a disaster prevention system for a mechanical parking lot, for example, Japanese Unexamined Patent Publication No. 5-154215 discloses that a fixed fire extinguishing point is provided as a fire extinguishing booth in the event of a fire in a part of a parking space. Japanese Patent Application Laid-Open No. 4-364865, entitled "Mechanical parking fire extinguishing robot" in which an ITV or fire extinguishing device is mounted on a cargo handling device to operate as a fire extinguishing robot, and a parking space where a fire has occurred is isolated and concentrated. Japanese Patent Laid-Open No. 4-
Japanese Patent Publication No. 364866, "Mechanical parking lot fire extinguishing system" and Japanese Patent Application Laid-Open No. 5-154216, "Mechanical parking lot fire prevention curtain fire extinguishing system" are available.

[0005] In order for each of the above fire extinguishing systems to function, measures must be taken at the beginning of a fire. As a system for detecting an initial fire for that purpose, for example, Japanese Unexamined Patent Publication No. 5-14 is equipped with a wireless sensor for each parked vehicle.
No. 6521, "Fire monitoring system in a car in a parking lot" and Japanese Patent Application Laid-Open No. 5-146527, "Fire monitoring system in a parking lot", an optical fiber is arranged in each parking space, and the Raman effect of laser beam irradiation causes a fire. JP-A-5-3210 "Detecting the occurrence and location of a fire" in "Mechanical parking lot fire monitoring system".

[0006]

However, most of the above-mentioned fire extinguishing systems are concerned with extinguishing a vehicle in a fire in the early stage of the fire, and each proposal is revolutionary. It can be lost. Therefore, as disclosed in Japanese Patent Application Laid-Open No. 8-82110, "mechanical parking system", the entire parking lot is divided into a plurality of fire-prevention sections, the sections are selected, and inert gas is released to thereby extinguish gas fire. There are also proposals to reduce the capacity of the equipment, and a fire extinguishing system in the parking space is required, as in the case where it is not possible to expect the spread of fire or the operation of the cargo handling equipment.

[0007] A method for detecting a fire is disclosed in Japanese Unexamined Patent Application Publication No.
Japanese Patent Application Laid-Open No. 146521 and Japanese Patent Application Laid-Open No. 5-146527 disclose a system for mounting a sensor for each vehicle using wireless communication, and a collation system for identifying the position of the sensor in a parking space based on a fire signal. Will be needed. Further, in the case where the optical fiber disclosed in Japanese Patent Application Laid-Open No. 5-31210 is used as a sensor, it is only possible to detect the heat of a fire.

[0008]

SUMMARY OF THE INVENTION In view of the above, the present invention relates to a mechanical parking lot having a plurality of parking spaces arranged stepwise and having a loading / unloading device for taking vehicles in and out of the parking spaces. A step-direction fire detection device for arranging a sampling pipe for each stage of a plurality of parking spaces, sampling air at a ceiling portion of each parking space of the same stage and detecting a fire, and each of a plurality of parking spaces. A sampling pipe is arranged for each row, a row-direction fire detection device that detects the fire by sampling the air in each ceiling of the parking space in the same row, and identifies the parking space where the fire occurred based on signals from them And a position specifying device. Therefore, changes in physical phenomena due to fire such as smoke and smell generated from vehicles in the parking space will be positively taken into the stepwise and column direction sampling pipes, and the detector will immediately detect the fire, The parking space having the fire vehicle can be immediately specified by the position specifying device determining the number of steps and the number of rows of the parking space. In particular, smoke and smell, which are products of a fire, are generated from an early stage of the fire, so that early detection and quick response can be performed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings, wherein the same reference numerals have the same names and functions. As shown in FIGS. 1 and 3, a plurality of parking spaces 3 are provided as a plurality of parking spaces 2 in a mechanical parking lot 1. The parking unit 2 is provided on both sides of the transport path 6 of the cargo handling device 5 that slides on the rail 4.
The transport path 6 is connected to a vertical path 9 of the elevator 8.

In each of the parking spaces 3, in order to quickly and accurately identify the vehicle in which a fire has occurred, a stepwise sampling pipe W having small holes for suctioning air at predetermined intervals (not shown) as shown in FIG. A sampling tube D in the row direction is arranged, and ambient air is sucked from the small hole,
Each of the sampling tubes W and D is connected to an ultra-sensitive smoke detector V. FIG. 2 shows the relative arrangement of the sampling tubes W and D with respect to each parking space 3. For example, the sampling pipe W from the smoke detector V10 is disposed so as to penetrate the ceiling of the first-stage parking space 3, and when smoke is detected by the smoke detector V10, the first-stage smoke is detected. There will be a sign of fire in any of the parking spaces 3. Similarly, it can be determined that the smoke detection device V20 is the second stage, and the smoke detection device V30 is the third stage. The pipe from the smoke detector V01 is the first
A sampling pipe D is branched and arranged at the ceiling of the parking space 3 in the first row, and when smoke is detected by the smoke detection device V01, there is a sign of fire in any of the parking spaces 3 in the first row. Will be. Similarly, the smoke detector V0
In the case of 2, it can be determined that it is the second row, and in the case of the smoke detection device V08, it can be determined that it is the eighth row. Thus, a certain parking space 3
Is denoted by Rmn, and when a fire occurs from the vehicle there, the smoke detector V1 is connected via the sampling pipe W in the stepwise direction.
Smoke detectors V01 to V08 are ideally used to detect smoke in two units in the column direction and the column direction through sampling tubes D in the column direction.

The detection signal from each of the ultra-high sensitivity smoke detectors V is configured to be input to a monitoring device (not shown), and an alarm signal of the monitoring device is transmitted to the control device C although not shown in detail. An alarm is displayed on the attached display panel to notify the operator H. Here, the monitoring device monitors the detection signal from each smoke detection device V, and the detection signal from any one of the smoke detection devices V10 to V30 and the detection signal from any of the smoke detection devices V01 to V08. An alarm signal is generated only when it is obtained, and the position Rmn of the fire parking space 3 is specified by combining the two detection signals.
In this way, by sampling the air in each parking space 3 in the column direction or the row direction, the parking space 3 for the fire can be specified, and the smoke can be reduced rather than arranging the sampling pipe through all the parking spaces 3. The distance to the detection device V can be set short, and the detection time is shortened.

Instead of providing a smoke detector V for each of the sampling tubes W and D, the base of the stepwise sampling tube and the column-direction sampling tube, which are integrally connected at the base end of the stepwise sampling tube, are connected. The end side is integrated into two of the row direction smoke detectors connected and, for example, a motorized valve for sequentially closing each sampling pipe W when detecting smoke in the stepwise smoke detector, and the like. The stage where smoke is generated may be specified using the used valve unit.
The column direction can be similarly specified. Further, the position of the fire can be similarly specified in the monitoring device.

Further, each parking space 3 is provided with an automatic foam spray head (not shown) which automatically opens by heat with foam as a fire extinguishing agent. This foam head is disposed near the left and right side surfaces near the ceiling surface in the parking space, for example, a valve element that closes the discharge port, and a fast-acting heat-sensing operating member with a small heat capacity that presses the valve element against the discharge port. And a deflector fixed to the arm. The valve body is pressed against the discharge port via packing,
The heat sensing actuating member is a glass bulb composed of a glass tube and alcohol sealed therein. If the alcohol expands due to heat, the glass tube is broken, the support function of the valve body is lost, and the discharge port is opened. It has a mechanism. The bubble head is not limited to the glass bulb type, but may be a fusible link mechanism using a fusible alloy. However, a so-called fast-moving head is preferable in terms of thermal response.

The foam head is always filled with a foam solution up to the outlet of the foam head.
An aqueous solution of a drug mixed with a stabilizer or the like is used. Although not shown in detail, the solution is mixed at a predetermined ratio by a mixer connected to a water supply source such as a water tank and a tank dedicated to the drug. At the time of spraying from the foam head, the deflector is sprayed without foaming because of the substantially flat shape, and the foam solution is directly dropped to the addition point without being obstructed by the air current of the flame, and forms a water film on the surface of the fuel or the like. To extinguish the fire by suffocation. The foam heads may be arranged one by one in the center of the ceiling surface of the parking space 3. At this time, it is preferable that the range of application by the deflector be substantially rectangular.

The loading / unloading device 5 is equipped with a wireless camera device (not shown).
Are arranged on both sides around the center, so that one cargo handling device 5
Are provided with two camera devices. This camera device has a built-in transmitting device for miniaturization, and the transmitting device transmits an image signal of the camera device as a wireless signal.

The transmitted image signal based on the radio signal is received by a receiving device (not shown) provided on the ceiling or the like of the transport path 6, and the image signal is integrated with the control device C, although not described in detail. The image is displayed on the monitor device of the panel. When a fire occurs, the operator H
Can check the vehicle in the parking space 3 by the monitor device. Usually, no illumination is used inside the mechanical parking lot 1, so this camera device is preferably a night vision camera. Even in the case of a normal camera, a lighting device, for example, a spotlight may be used at the same time when the camera device is used.

The parking lot entrance 30 of the mechanical parking lot 1 is a fixed point P for fire extinguishing work, and a fire extinguisher booth 10 is provided at this fixed point. As shown in FIG. 4, the fire extinguishing booth 10 is surrounded by a fire-resistant wall 12, and a shutter 14 is provided at an entrance 12a. In the fire extinguisher booth 10, a fire extinguisher, for example, a fire extinguishing nozzle 16 of a gas fire extinguisher, a foam head 15 of a foam extinguisher, and a foam fire hydrant so that an operator H can extinguish a fire are provided. This fixed point P is not always required to be near the parking lot entrance 30, and a similar fire extinguishing nozzle or the like may be arranged in an arbitrary parking space 3. By setting the vicinity of the parking lot entrance 30, the operator H can directly check and extinguish the fire, and is completely isolated from surrounding vehicles. Also,
When a fixed point is provided in an arbitrary parking space 3, there is an advantage that the moving time by the cargo handling device 5 can be reduced.

Next, the operation of this embodiment will be described. If a vehicle fires in parking space 3,
The initial smoke of the fire is collected by the sampling pipes W and D of the parking space 3 and guided to the ultra-sensitive smoke detector V for detection. Although the detection time in the stepwise direction and the column direction differs depending on the length of the sampling tubes W and D depending on the position of the parking space 3 where the fire has occurred, a monitoring device (not shown) based on the detection signals from the two smoke detection devices V Outputs a warning signal, and at the same time, the parking space 3 having the fire vehicle 20 is specified. This alarm signal notifies the operator H of the occurrence of the fire and the place where the fire occurred.

The operator H having recognized the fire alarm moves the cargo handling device 5 to the corresponding parking space 3 by the control device C. Then, an image signal from a camera device (not shown) is projected on a monitor device (not shown), and the fire vehicle 20 is displayed.
Check. At this time, the operator H determines the state of the fire of the fire vehicle 20 and determines whether it is in the initial stage or is expanded so that it cannot be touched. . Usually, when it is detected through the smoke detector, it is considered that the fire is almost an initial fire, and from that point, the cargo handling equipment 5 based on the fire alarm is considered.
The movement of the vehicle to the corresponding parking space 3 and the projection on the monitor device, and the removal of the fire vehicle 20 from the corresponding parking space 3 may be partially or entirely automated.

When the fire vehicle 20 is confirmed by the operator H, the control device C issues a command to the cargo handling device 5 to move to the fixed point P. When the cargo handling device 5 is moved by this command and stops in front of the fire vehicle 20, the conveyor 21 of the cargo handling device 5 and the conveyor 22 of the parking space 30 are simultaneously driven, and the fire vehicle 20 is mounted on the gantry. Transferred to No. 5. Similarly, the fire vehicle 20 on the cargo handling device 5 is transferred to the elevator 8, moves upward on the vertical path 9, and is transferred to the fixed point P of the parking lot entrance 30. At this time, the fire extinguisher booth 10 can be closed by closing the shutter 14 at the entrance 12a.

In this state, the operator H of the mechanical parking lot 1 operates and controls fire extinguishing means such as gas extinguishing and foam extinguishing according to the fire situation of the fire vehicle 20. Further, it goes without saying that this fire extinguishing work may be automated.

As described above, the fire vehicle 20 carried out of the parking space 3 has an advantage that it can be isolated from surrounding vehicles by moving it to the parking entrance 30. In particular, the fire vehicle 20 can be large-sized without a fire extinguishing nozzle or the like. A manual fire extinguishing means such as a fire extinguisher may be used.

Next, the case where smoke is not efficiently detected by the smoke detector V, or the smoke is enlarged so that even if it is detected, the smoke cannot be put on will be described. From the fire vehicle 20 after the initial time point, as a fire phenomenon, in addition to smoking, the calorific value increases, and as a result, the temperature inside the parking space 3 increases.

When the temperature rises, the temperature around the bubble head (not shown) provided on the ceiling surface of the parking space 3 also becomes high. As a result, the heat sensing operation member is opened, the valve body is opened, and the bubble from the discharge port is opened by the deflector. The solution is fire vehicle 20
Sprayed against. As a result, although not shown in detail, the fire pump is activated by the pressure drop of the piping system, and the foam solution adjusted to a predetermined ratio by the mixer is continuously supplied to the foam head. Therefore, a sufficient fire extinguishing activity is performed on the fire vehicle 20 in the parking space 3, and the adjacent vehicle and the facilities of the parking lot are not damaged. The operation of the foam head is an automatic activation by the heat of the fire, and does not require the judgment of the operator H.

In this embodiment, in each parking space 3, as shown in FIG. 5, the sampling pipes W in the step direction and the sampling pipes D in the column direction are arranged so as to be linearly perpendicular to each other near the ceiling surface. However, the piping method is not limited to this. For example, the pipe may be branched in the parking space 3 and disposed at a position above the side of the vehicle, such as a sampling pipe D2 in the row direction shown in FIG. Also, like the stepwise sampling tube W2 shown in FIG.
The vehicle may be branched right and left at the central portion and arranged in a cross shape on the ceiling surface of the parking space 3. In this way, by laying the pipe in a plane with respect to the ceiling surface of the parking space 3, it is possible to increase the smoke detection speed, and to prevent a delay in the smoke detection time in the step direction or the row direction depending on the generation position. be able to. Furthermore, the smoke detector V uses an ultra-high-sensitivity smoke detector that uses scattering of laser light smoke. However, an odor detector that uses a semiconductor element or a quartz oscillator may be used. Smoke and smell are generated from the early stages of a fire and can be detected intensively by sampling air.

As described above, in the mechanical parking lot in which the plurality of parking spaces 3 are arranged stepwise and have the cargo handling device 5 for taking the vehicle in and out of the parking spaces 3,
Sampling tube W for each stage in a plurality of parking spaces 3
And a stepwise fire detection device that samples the air at the ceiling of each parking space 3 on the same level to detect a fire, and a sampling pipe D for each row of the plurality of parking spaces 3, A row direction fire detecting device that detects a fire by sampling air from each ceiling portion of the parking spaces 3 in a row, and a position specifying device that specifies the parking space 3 in which a fire has occurred based on a signal from the device. It is characterized by having. Therefore, changes in physical phenomena due to fire such as smoke and smell generated from vehicles in the parking space 3 are positively taken into the stepwise and column direction sampling pipes, and the detector immediately detects the fire. The parking space 3 having the fire vehicle 20 can be immediately specified by the position specifying device determining the number of rows and the number of rows of the parking space 3. In particular, smoke and smell, which are products of a fire, are generated from an early stage of the fire, so that early detection and quick response can be performed.

Further, when the position information of the parking space 3 for the fire is obtained, the cargo handling device 5 carries out the fire vehicle 20 so that it is possible to prevent the surrounding vehicles and mechanical equipment from being affected. Transports the fire vehicle 20 to the outside of the parking lot or to a fixed fire extinguishing point

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an entire parking lot showing an embodiment of the present invention.

FIG. 2 is a simplified diagram showing an arrangement of a sampling tube in FIG. 1;

FIG. 3 is an overall horizontal sectional view of FIG. 1;

FIG. 4 is a sectional view of a fixed point in FIG. 1;

FIG. 5 is a simplified diagram showing an arrangement of sampling pipes in the parking space of FIG. 1;

FIG. 6 is a simplified diagram showing another arrangement of FIG. 5;

FIG. 7 is a simplified diagram showing another arrangement of FIG. 5;

[Explanation of symbols]

 20 Fire vehicle 3 Parking space D, W Sampling pipe V Smoke detector

Claims (5)

[Claims] 1. A mechanical parking lot having a plurality of parking spaces arranged stepwise and having a cargo handling device for taking vehicles in and out of the parking spaces, wherein a sampling pipe is provided for each stage of the plurality of parking spaces. A step direction fire detection device that detects the fire by sampling the air at the ceiling of each parking space on the same level and arranging a sampling pipe for each row of the plurality of parking spaces, A row direction fire detection device that detects a fire by sampling air from each ceiling portion of a parking space, and specifies a parking space where a fire has occurred based on signals from the stepwise fire detection device and the row direction fire detection device. A fire monitoring system for a parking lot, comprising: a position specifying device. 2. A parking lot according to claim 1, wherein in one or both of the stepwise fire detector and the rowwise fire detector, a fire detector is provided for each sampling pipe to specify the step or row where the fire occurred. Fire monitoring system. 3. In one or both of the stepwise fire detector and the row fire detector, a fire detector is installed by concentrating each sampling tube, and each sampling tube is closed one by one when a fire is detected. The fire monitoring system for a parking lot according to claim 1, wherein a step or a row in which the fire has occurred is provided by providing a valve unit that performs the fire. 4. The fire monitoring system for a parking lot according to claim 1, wherein the cargo handling device carries out the vehicle of the position information when the position information of the fire and its parking space is obtained by the position specifying device. 5. The parking lot fire monitoring system according to claim 4, wherein the cargo handling device conveys the vehicle carried out of the parking space of the position information of the fire to the outside of the parking lot or to a fixed fire extinguishing point.