JP6808610B2 - Tide door automatic control system and tide door automatic control method - Google Patents

Description

The present invention relates to a tide door automatic control system and a tide door automatic control method for automatically controlling tide doors such as floodgates and coupures in order to prevent backflow of seawater and rivers due to tsunami and storm surge.

In recent years, automatic control of disaster prevention equipment has been progressing in order to promptly and surely notify evacuation information and protect important facilities in the event of a disaster. In the control of floodgates and coupures in the event of a disaster, when a trigger (phenomenon) that causes backflow of seawater or rivers such as a tsunami or earthquake is detected, whether or not evacuees remain inside the tide door (on the sea side). Regardless, the door closes immediately or after a certain period of time.

Patent Document 1 discloses a tide gate opening / closing system having a function of automatically closing the tide gate in an emergency. The tide gate opening / closing system disclosed in Patent Document 1 includes a means for automatically controlling the tide gate to dive and half-close, a means for confirming that there are no vessels passing through the sluice in the half-closed state, and a tide gate after the confirmation. It is provided with a means for controlling the sudden descent and full closure. As a result, scandals such as damage to ships and floodgates, inability to navigate vessels, and loss of control of floodgates are reliably avoided, and the safety of the tide gate opening / closing system is improved.

Japanese Unexamined Patent Publication No. 11-334617

By the way, in the tide gate opening / closing system described in Patent Document 1, a floodgate monitoring camera is used as a means for confirming that there are no vessels navigating through the floodgate in the semi-closed state, and harmful substances such as people, ships, and objects are present at the floodgate. After confirming that there is no such thing, close the floodgate completely. As described above, in the tide gate opening / closing system described in Patent Document 1, the sluice gate monitoring camera is used only for the purpose of detecting harmful substances when the sluice gate is closed, and an evacuee is placed when the sluice gate is automatically closed. It has not been determined whether the vessel remains inside the lock.

If the floodgate is replaced with a coupure, the evacuees left inside the coupure's tide door (on the sea side) will have to evacuate through narrow stairs. Therefore, if there are evacuees who are lame or if a large number of evacuees remain, it may take time to evacuate and be swallowed by the tsunami. Also, when a worker closes the tide door by remote monitoring, it takes time to visually confirm the evacuees, and the worker may be delayed in escaping.

In addition, in the automatic control of sluice gates and coupure tide doors, the tide doors must be fully closed before the tsunami arrives, so it is expected that the tsunami will arrive by leaving it open until the tsunami arrives. It is necessary to control along the timeline, such as automatically closing the tide door fully before the time.

The present invention has been made in consideration of the above situation, and controls the opening degree of the tide door to prevent as many evacuees as possible when flood damage that causes backflow of seawater or river is predicted. The purpose is to evacuate safely from the tide door.

The tide door automatic control system of one aspect of the present invention includes an imaging unit that captures a monitoring area around the tide door, a receiving unit that receives flood forecast information including information on the arrival time of flood damage, and information on the specifications of the tide door. Evacuees when the tide door close operation is started immediately after receiving the flood forecast information in the monitoring area of the imaging unit based on the storage unit that stores the data, the flood forecast information, and the information on the specifications of the tide door. A calculation unit that calculates an evacuation area that can be reliably evacuated to the tide door, and a judgment unit that determines the evacuation status including whether or not evacuees remain outside the evacuation area based on the video data of the monitoring area. Have.
In addition, the above-mentioned automatic control system for the tide door controls the drive of the tide door based on the judgment unit that determines the possible opening degree of the tide door based on the flood forecast information and the evacuation situation and the possible opening degree determined by the judgment unit. It has a control unit.

According to at least one aspect of the present invention, when a flood that causes backflow of seawater or a river is predicted, the evacuees inside the tide door will not be left behind as long as there is time to reach the flood. , As many evacuees as possible can be safely evacuated from the tide door.
Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is explanatory drawing which shows the outline of the equipment of a coupure and its surroundings. It is a block diagram which shows the configuration example of the whole tide door automatic control system which concerns on one Embodiment of this invention. It is explanatory drawing which shows the photographing range of the surveillance camera which concerns on one Embodiment of this invention. It is a block diagram which shows the hardware configuration example of the surveillance camera which concerns on one Embodiment of this invention. It is a block diagram which shows the hardware configuration example of the door control device which concerns on one Embodiment of this invention. It is a graph which shows the relationship example of the opening degree and time of the tide door which concerns on one Embodiment of this invention. It is explanatory drawing which shows the structural example of the time table used when determining the closing operation start time which concerns on one Embodiment of this invention. It is a flowchart which shows the procedure example of the tide door automatic control processing which concerns on one Embodiment of this invention.

Hereinafter, examples of embodiments for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described with reference to the accompanying drawings. In the present specification and the accompanying drawings, components having substantially the same function or configuration are designated by the same reference numerals, and duplicate description will be omitted.

<1. One Embodiment>
[Coupure and its surroundings]
First, a coupure will be described as an example of a facility to which the tide door, which is the control target of the tide door automatic control system, is applied.
FIG. 1 is an explanatory diagram showing an outline of equipment in and around the coupure.

As shown in FIG. 1, a seawall 1 is installed at the boundary between the urban area and the coastal area in order to protect port facilities and urban areas from disasters (flood damage) such as tsunami and storm surge. .. A coupure 2 for vehicles such as people and automobiles to enter and exit is installed on the seawall 1. The coupure 2 is normally interrupted by opening the tide door 3 so that users can pass through the tide embankment 1 for daily life, and when a disaster such as a tsunami or storm surge occurs, the tide door 3 is closed to temporarily open the tide embankment. It is a facility set up for the purpose of playing a role. For example, the tide embankment 1 has a height H1 of several meters to a dozen meters, and is constructed of reinforced concrete and has sufficient strength against tsunamis and storm surges.

The coupure 2 has a tide door 3 having a height of H2 and an opening / closing width W. For example, the tide door 3 is made of stainless steel and has sufficient strength against a tsunami or a storm surge collision. The opening / closing width W indicates the distance between the tide embankment end 1L (left side of the passage) and the tide embankment end 1R (right side of the passage), and when the tide door 3 of the coupure 2 is fully open, the door tip of the tide door 3 3f is at the same position as the seawall end 1R (on the right side of the passage). Since the tide door 3 is normally housed in the tide embankment 1, the height H2 of the tide door 3 is generally lower than the height H1 of the tide embankment 1.

Further, the tide embankment 1 is provided with stairs 4 so that people can enter and exit even after the seawall 1 is closed. The tide door 3 can be opened, closed, and stopped, and the power of the tide door power unit 34 (see FIG. 2 to be described later) such as a motor built in the housing 7 installed in the seawall 1. Is done by. The power generated by the tide door power unit 34 is transmitted to the tide door 3 by a power transmission mechanism (not shown) to open and close the tide door 3. The opening and closing operations of the tide door 3 by the tide door power unit 34 can be performed at a speed of, for example, 0.5 m per minute. When the opening / closing width W is 10 m, it takes 20 minutes from fully open to fully closed.

In the vicinity of the coupure 2, a surveillance camera 20 is installed to monitor the coupure 2 and its vicinity. The surveillance camera 20 photographs a person inside the coupure 2 (on the sea side). The captured video can be viewed by the monitoring center 40 (see FIG. 2 described later) or an operation monitoring terminal (not shown).

Further, a speaker 5 and a patrol lamp 6 are attached above the pillars installed near the coupure 2. The speaker 5 gives a voice warning of the closure or evacuation of the coupure 2 (tide door 3) to the surroundings. The patrol lamp 6 warns the surroundings by turning on the coupure 2 (tide door 3) when it is closed.

[Configuration of automatic control system for tide doors]
Next, a configuration example of the entire tide door automatic control system will be described.
FIG. 2 is a block diagram showing a configuration example of the entire tide door automatic control system.

As shown in FIG. 2, the tide door automatic control system 100 includes a tsunami information transmission device 10, a surveillance camera 20, a tide door control device 30, and a monitoring center 40. The devices are connected to each other so as to be able to communicate with each other via the network N. The minimum configuration of the tide door automatic control system 100 is a surveillance camera 20 capable of receiving tsunami information and a tide door control device 30. The surveillance camera 20 and the tide door control device 30 may communicate directly with each other by a wired cable without going through the network N. Hereinafter, tsunami information will be described as an example of disaster forecast information that causes backflow of seawater or rivers, but it may be forecast information of other disasters such as storm surge information.

(Tsunami information transmitter)
The tsunami information transmission device 10 is an example of a flood information transmission device, and is owned by an organization that issues tsunami information. Tsunami information refers to information on the arrival time of a tsunami in the target area issued by the Japan Meteorological Agency or the National Instant Alert System (J-Alert), or the arrival time of a tsunami starting from the time of the announcement. Tsunami information is shared by the tsunami information transmission device 10, the surveillance camera 20, the tide door control device 30, and the monitoring center 40.

(Surveillance camera)
The surveillance camera 20 includes a first communication unit 21, a tsunami information receiving unit 22, an evacuation certainty area calculation unit 23, a tide door information storage unit 24, an imaging unit 25, an image processing unit 26, and an evacuation completion determination. A unit 27 is provided.

The first communication unit 21 communicates with another device connected to the network N. The tsunami information receiving unit 22 receives the tsunami information transmitted from the tsunami information transmitting device 10 via the first communication unit 21, and sends the tsunami information to the first communication unit 21. When the evacuation certainty area calculation unit 23 receives the tsunami information and immediately starts the closing operation of the tide door 3, the evacuees can surely evacuate to the tide door 3 (FIG. 3 described later). ) Is calculated. The evacuation certainty area 52 includes information converted into the number of pixels of the video data as information on the distance from the tide door 3. The evacuation certainty area calculation unit 23 outputs the calculated information of the evacuation certainty area 52 to the video processing unit 26.

The tide door information storage unit 24 stores information regarding the specifications of the tide door 3. Information on the specifications of the tide door 3 includes, for example, the speed of closing the tide door 3 (0.5 m / min in this embodiment) and the distance the tide door 3 moves from the fully open state to the fully closed state (≈opening and closing). Width W). Further, the information regarding the specifications of the tide door 3 may be the time required for the tide door 3 to be fully closed (for example, from fully open to fully closed).

Here, the outline of the evacuation certainty area will be described.
FIG. 3 is an explanatory diagram showing a shooting range of the surveillance camera 20.

In the monitoring area of the surveillance camera 20 (whole or part of the shooting range 50), the evacuees are in the tide door 3 (abbreviation of FIG. 3) by the time when the tsunami reaches the tide door 3 of the coupure 2 (tsunami arrival time). The area that can pass through the center of the fan shape is defined as the evacuation certainty area 52. In the example of FIG. 3, the evacuee 51-1 is in the evacuated area 52, and the evacuee 51-2 is in a range farther from the tide door 3 than the evacuated area 52 (outside the evacuated area 52).

Returning to the description of the block in FIG. The image pickup unit 25 is composed of an image pickup element such as a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor), and captures a predetermined monitoring range (see FIG. 3 to be described later) to generate video data. The image processing unit 26 processes the image data captured by the imaging unit 25. The evacuation completion determination unit 27 determines whether or not an evacuee exists in a range far from the evacuation certainty area 52. The evacuation completion determination unit 27 transmits the evacuation completion determination result to the first communication unit 21. Then, the first communication unit 21 transmits the evacuation completion determination result as the information indicating the evacuation status together with the tsunami information to the tide door control device 30 via the network N.

(Tide door control device)
The tide door control device 30 includes a second communication unit 31, a possible opening degree determination unit 32, and an opening degree control unit 33.

The second communication unit 31 communicates with another device connected to the network N. For example, the second communication unit 31 receives the tsunami information and the evacuation status (evacuation completion determination result) from the surveillance camera 20. The possible opening degree determination unit 32 of the tide door 3 currently allowed based on the tsunami information received from the surveillance camera 20, the evacuation status, and the information on the specifications of the tide door 3 (speed of closing operation of the tide door 3). The opening degree (hereinafter, also referred to as "possible opening degree") is determined. Information regarding the specifications of the tide door 3 is stored in the non-volatile storage 74 of FIG. 5 which will be described later. The information regarding the specifications of the tide door 3 includes the distance that the tide door 3 moves from the fully open state to the fully closed state and the tide door 3 that is fully closed (for example,) as in the information stored in the tide door information storage unit 24. It may include the time required from fully open to fully closed).

The opening degree control unit 33 outputs a command to the tide door power unit 34 (motor) based on the determination result of the possible opening degree determination unit 32, and the tide door 3 determines the opening degree determined by the possible opening degree determination unit 32. Control to be. The opening degree of the tide door 3 can be measured by the opening degree meter 35. The opening meter 35 outputs, for example, the opening degree of the tide door 3 to the tide door power unit 34 as a percentage. For example, when the tide door 3 is fully open, it is 100%, when it is half closed, it is 50%, and when it is fully closed, it is 0%. The opening degree control unit 33 compares the opening degree output by the opening degree meter 35 with the target opening degree instructed by the possible opening degree determination unit 32, and sets the tide door power unit 34 so that the tide door 3 becomes the target opening degree. Control.

(Monitoring center)
The monitoring center 40 receives information such as tsunami information of the tsunami information transmitting device 10 and video data of the monitoring camera 20 and evacuation status via network N, and monitors tide doors such as the coupure 2 and the floodgate. Equipped with a monitoring terminal.

[Hardware configuration of surveillance cameras]
FIG. 4 is a block diagram showing a configuration example of hardware included in the surveillance camera 20.
The surveillance camera 20 includes a CPU (Central Processing Unit) 61, a ROM (Read Only Memory) 62, a RAM (Random Access Memory) 63, an imaging unit 25, a non-volatile storage 64, and a network interface 65. Each part is connected so as to be able to send and receive data to and from each other via a system bus.

The CPU 61, ROM 62, and RAM 63 form a control unit. This control unit is used as an example of a computer that controls the operation of each unit in the surveillance camera 20. The CPU 61 reads a program code of software that realizes each function (see FIG. 2) according to the present embodiment from the ROM 62 and executes the program code. The function of the surveillance camera 20 is realized by the cooperation of these hardware and software. Instead of the CPU 61, another arithmetic unit such as an MPU (Micro Processing Unit) may be used as the arithmetic unit.

The ROM 62 is used as an example of a non-volatile memory (recording medium), and stores programs, data, and the like necessary for the CPU 61 to operate. The RAM 63 is used as an example of a volatile memory, and temporarily stores information (data such as parameters) required for each process performed by the CPU 61 and variables and parameters generated during the arithmetic processing by the CPU 61.

The imaging unit 25 generates video data obtained by capturing a predetermined monitoring range, and stores the video data in the RAM 63 or the non-volatile storage 64. The video data is processed by the video processing unit 26 (see FIG. 2).

The non-volatile storage 64 is an example of a recording medium, and stores a program for the CPU 61 to control each part, a program such as an OS, and data. As the non-volatile storage 64, for example, an HDD, SSD (Solid State Drive), optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, non-volatile memory card and the like are used. In this non-volatile storage 64, in addition to the OS (Operating System) and various parameters, a program for operating the computer may be recorded. The program may be provided via a wired or wireless transmission medium such as a local area network (LAN), the Internet, or digital satellite broadcasting.

The network interface 65 is composed of, for example, a NIC (Network Interface Card), a modem, or the like, establishes a connection with a device of a communication partner via a network N such as a LAN, and executes transmission / reception of various data.

[Hardware configuration of tide door control device]
FIG. 5 is a block diagram showing a configuration example of hardware included in the tide door control device 30.
The tide door control device 30 includes a CPU 71, a ROM 72, a RAM 73, a non-volatile storage 74, and a network interface 75. Each part is connected so as to be able to send and receive data to and from each other via a system bus. Each of the CPU 71, ROM 72, RAM 73, non-volatile storage 74, and network interface 75 has the same functions as the CPU 61, ROM 62, RAM 63, non-volatile storage 64, and network interface 65 of the surveillance camera 20, and is duplicated. I will omit the explanation.

The CPU 71, ROM 72, and RAM 73 form a control unit. This control unit is used as an example of a computer that controls the operation of each unit in the tide door control device 30. The CPU 71 reads the program code of the software that realizes each function (see FIG. 2) according to the present embodiment from the ROM 72 or the non-volatile storage 74 and executes the program code. For example, the CPU 71 adjusts the opening degree of the tide door 3 by controlling the drive of the tide door power unit 34. Instead of the CPU 71, another arithmetic processing device such as an MPU may be used as the arithmetic unit.

[Control of opening and closing of tide doors when a tsunami occurs]
Next, the opening / closing control of the tide door by the tide door automatic control system 100 when a tsunami occurs will be described.
When the occurrence of a tsunami is predicted, the tsunami information is transmitted from the tsunami information transmitting device 10 to the surveillance camera 20 through the network N. When the tsunami information receiving unit 22 of the surveillance camera 20 receives the tsunami information (information on the arrival time of the tsunami) via the first communication unit 21, the tide door 3 is fully opened to fully closed from the tide door information storage unit 24. Information on the time required for the door is read out. Based on this information, the evacuation certainty area calculation unit 23 can make sure that the evacuees can pass through the tide door 3 before the tide door 3 is fully closed when evacuating at the average walking speed of a person (for example, 4 km / h). The area 52 is calculated.

The walking speed of the evacuees evacuating here is set to 4 km / h, but if the evacuees include wheelchair users, elderly people, or other evacuees who move slowly, the speed may be set to less than 4 km / h. In addition, if there are many evacuees, it is expected that the tide door 3 will be flooded with people and it will take time to pass through. It may be reflected in the calculation of the area 52. Further, since the evacuation time changes depending on the road and the terrain (for example, a slope), the evacuation certainty area calculation unit 23 may calculate the evacuation certainty area 52 by reflecting the road map information and the altitude data.

The image processing unit 26 of the surveillance camera 20 processes the image of the evacuation certain area 52 calculated by the evacuation certain area calculation unit 23 in the shooting data of the imaging unit 25. Then, the evacuation completion determination unit 27 determines from the processing result of the video processing unit 26 whether there is an evacuee who has not completed the evacuation due to the delay in evacuating, based on whether or not there is an object moving outside the evacuation certainty area 52. Judgment is made, and the evacuation completion determination result is sent to the first communication unit 21. The first communication unit 21 transmits the evacuation completion determination result together with the tsunami information to the tide door control device 30 via the network N.

Then, the tide door control device 30 receives the evacuation completion determination result and the tsunami information transmitted from the first communication unit 21 of the surveillance camera 20 by the second communication unit 31. Next, the possible opening degree determination unit 32 determines the possible opening degree of the tide door 3 based on the information. Then, the opening degree control unit 33 receives the determination result of the possible opening degree from the possible opening degree determination unit 32, outputs an opening degree command to the tide door power unit 34, and closes the tide door 3 until the opening degree is reached. Do the action.

According to the above configuration, when a disaster such as a tsunami that causes backflow of seawater or river is predicted, the evacuees in the coupure 2 are monitored by the surveillance camera 20, and the evacuees' evacuation status (evacuation completed). The opening degree of the tide door 3 is controlled in consideration of the determination result) and the tsunami information. Thereby, in the above configuration, as many evacuees as possible can be safely evacuated through the tide door 3.

[Close operation pattern]
Next, an example of the closing operation pattern of the tide door 3 will be described.
FIG. 6 is a graph showing an example of the relationship between the opening degree of the tide door 3 and time. The horizontal axis of the graph represents the time t after the tsunami information is announced, and the vertical axis represents the opening degree of the tide door 3.

In FIG. 6, the closing operation start time 80 is the time when the closing operation of the tide door 3 in the fully open state (normal state) is started, and at least the closing operation of the tide door 3 in the fully opened state is started at the corresponding time. In this case, the time is such that the full closing is completed by the target time (full closing completion time 82). The closing operation start time 80 is determined at a time at which the fully closed operation can be completed with a margin before the fully closed completion time 82 (see Graph 87), and the details of the determination method will be described later.

The fully closed operation start time 81 is a time when the fully closed operation is completed by the target time (fully closed completion time 82) when the closing operation of the tide door 3 having the limit opening degree 84 is started. The limit opening degree 84 is an opening degree that leaves a width (for example, 1 m) that allows one person to pass through the tide door 3. However, the limit opening degree 84 is not limited to this example, and may be set to another setting such as a width for two people. The time T3 from the closing operation start time 80 to the time when the limit opening 84 is reached is a fixed time determined by the tide door 3 (power transmission mechanism) and the tide door power unit 34. Further, the time T2 from the fully closed operation start time 81 to the fully closed completion time 82 is a fixed time determined by the tide door 3 (power transmission mechanism) and the tide door power unit 34.

The fully closed completion time 82 is a target time for completing the fully closed tide door 3. In the present embodiment, the time before the tsunami arrival time 83 by time T1 (for example, 10 minutes) is set as the fully closed completion time 82. Considering the possibility that the arrival of the tsunami will be accelerated, it is desirable to complete the full closing of the tide door 3 by the full closing completion time 82.
The tsunami arrival time 83 is the time when the tsunami is expected to arrive at the tide door 3.

The possible opening degree determination unit 32 sets the closing operation start time 80 and the fully closed operation start time based on the tsunami information (tsunami arrival time information) and the information regarding the specifications of the tide door 3 (the speed of the tide door 3 closing operation). 81, the fully closed completion time 82 is calculated.

In FIG. 6, the first graph 85 from the top is an example of a closing operation pattern when there are no evacuees outside the evacuation certainty area 52 at the time when the tsunami information is issued. In this case, the possible opening degree determination unit 32 determines that the immediate full closing operation of the tide door 3 can be started, and issues a full closing operation command to the opening degree control unit 33. Since the tsunami arrival time 83 is expected, the actual tsunami arrival time may be earlier. Therefore, if there are no evacuees left, the tide door 3 can be fully closed immediately to prepare for a tsunami attack earlier than expected.

The second graph 86 and the third graph 87 show an example of a closing operation pattern when an evacuee is outside the evacuation certainty area 52 at the time when the tsunami information is issued. The possible opening degree determination unit 32 fully opens the tide door 3 until the closing operation start time 80, and issues a command to start the closing operation when the current time reaches the closing operation start time 80.

In the second graph 86, when the evacuees remained outside the sure evacuation area 52, the closing operation of the tide door 3 was started because the current time reached the closing operation start time 80, but the evacuation occurred even during the closing operation. This is an example of a closing operation pattern when it is not completed. In this case, since the current time has reached the closing operation start time 80, the opening degree control unit 33 temporarily stops the tide door 3 at the limit opening 84 leaving a width of 1 m after starting the closing operation of the tide door 3. After that, when the current time reaches the fully closed operation start time 81, the opening degree control unit 33 performs the closing operation until the tide door 3 is fully closed regardless of the presence or absence of an evacuee.

In the closing operation pattern of this graph 86, since the tide door 3 is fully closed by at least the full closing completion time 82, as many evacuees as possible can be safely evacuated from the tide door 3 and the tsunami strikes. Can be prepared. Here, the limit opening 84 is set as the opening converted into a width of 1 m. For example, if the evacuees have an evacuees who need a width to pass through the tide door 3, such as a wheelchair user, 1 m is used. The limit opening corresponding to the width exceeding the limit may be set.

In the third graph 87, when the evacuees remain outside the sure evacuation area 52, the current time has reached the closing operation start time 80, so that the evacuation outside the sure evacuation area 52 is completed in the middle after the closing operation is started. This is an example of a closing operation pattern in which the closing operation is continued until it is fully closed. The closing operation pattern of the graph 87 can also prepare for a tsunami attack earlier than expected, as in the case of the graph 85.

[How to determine the closing operation start time]
Here, a method of determining the closing operation start time 80 will be described.
FIG. 7 shows a configuration example of a time table used when determining the closing operation start time 80.

The time table 90 shown in FIG. 7 shows the time from the occurrence of the tsunami (issue of tsunami information) to the arrival of the tsunami (T0), the total time of the fully open state and the limit opening time (T0- (T1 + T2 + T3)), and the fully open state. It has each item of time (Ta) and time of limit opening (Tb). The tsunami arrival time is an example of the flood arrival time. The unit of time for each item is minutes. These times are related to the following equation (1).

Ta + Tb = T0- (T1 + T2 + T3) ... (1)

The time T0 until the arrival of the tsunami is determined by the tsunami information, and the times T1 to T3 are predetermined by the specifications of the tide door 3 and the like. The length (time allocation) of the time Ta in the fully open state and the time Tb in the limit opening is set in advance for each time T0 until the arrival of the tsunami and registered in the time table 90. In the time table 90 of FIG. 7, the time T0 until the arrival of the tsunami is 60 minutes, whereas the time Ta in the fully open state is set to 15 minutes and the time Tb of the limit opening is set to 10 minutes.

The length of the time Ta in the fully open state and the time Tb in the limit opening degree may be appropriately distributed by the possible opening degree determination unit 32 based on the tsunami information and the evacuation completion determination result (evacuation status). For example, when there are many evacuees in the surveillance area of the surveillance camera 20, the time Ta in the fully open state is set longer so that the evacuees can pass through the tide door 3 with a margin. Further, for example, when most of the evacuees have completed evacuation and there are almost no evacuees in the monitoring area, the time Ta in the fully open state is shortened and the time Tb of the limit opening is lengthened.

[Automatic control process for tide doors]
Here, a procedure example of the tide door automatic control process according to the embodiment will be described with reference to FIG.
FIG. 8 is a flowchart showing a procedure example of the tide door automatic control process according to the embodiment.

First, when the tsunami information receiving unit 22 of the surveillance camera 20 acquires the tsunami information (tsunami arrival time 83) via the first communication unit 21 (S1), the evacuation certainty area calculation unit 23 moves to the tide door information storage unit 24. Information on the specifications of the tide door 3 is obtained from (S2).

Next, the evacuation certainty area calculation unit 23 calculates the evacuation certainty area 52 based on the information regarding the specifications of the tide door 3 when the tsunami information is issued. Further, the evacuation certainty area calculation unit 23 calculates the closing operation start time 80 and the fully closing operation start time 81 based on the tsunami information and the information regarding the specifications of the tide door 3 (S3).

Next, the possible opening degree determination unit 32 clears the count value of the first step counter (not shown) to zero (S4). This first step counter is realized, for example, by the CPU 71 of the tide door control device 30 counting a clock signal (clock pulse).

Next, the possible opening degree determination unit 32 compares the count value of the first step counter integrated from the time when the tsunami information is received with the threshold value, and determines whether or not the current time has passed the closing operation start time 80. (S5). When the current time has not passed the closing operation start time 80 (NO in S5), the possible opening degree determination unit 32 has an evacuee outside the evacuation certainty area 52 based on the evacuation completion determination result of the evacuation completion determination unit 27. It is determined whether or not it remains (S6).

When no evacuees remain outside the sure evacuation area 52 (NO in S6), the possible opening degree determination unit 32 outputs a fully closed command to the opening degree control unit 33, and the tide door 3 is immediately fully closed. The closing operation is performed until (S15). This closing operation corresponds to the closing operation pattern of Graph 85 shown in FIG. This flowchart ends when the tide door 3 is fully closed.

On the other hand, when an evacuee remains outside the sure evacuation area 52 (YES in S6), the possible opening degree determination unit 32 keeps the tide door 3 stopped (that is, fully open) (S7). ). At this time, the possible opening degree determination unit 32 increments the count value of the first step counter (adds 1 to the count value) (S8), and returns to the determination process of step S5.

If the current time has passed the closing operation start time 80 (YES in S5), the possible opening degree determination unit 32 clears the count value of the second step counter and sets it to zero (S9). This second step counter is realized, for example, by the CPU 71 of the tide door control device 30 counting a clock signal (clock pulse). Next, the possible opening degree determination unit 32 outputs a closing command to the opening degree control unit 33 to start the closing operation of the tide door 3 (S10).

Next, the opening degree control unit 33 determines whether or not the current opening degree of the tide door 3 is equal to or less than the limit opening degree 84 based on the measured value of the opening degree meter 35 (S11). Then, when the current opening degree is not less than or equal to the limit opening degree 84, that is, when the current opening degree is larger than the limit opening degree 84 (NO in S11), the opening degree control unit 33 returns to step S10 and the tide door. The closing operation of 3 is continued.

Next, when the current opening degree is the limit opening degree 84 or less (YES in S11), the possible opening degree determination unit 32 sets the count value and the threshold value of the second step counter integrated from the closing operation start time 80. By comparison, it is determined whether or not the current time has passed the fully closed operation start time 81 (S12). If the current time does not exceed the fully closed operation start time 81 (NO in S12), the possible opening degree determination unit 32 outputs a stop command to the opening degree control unit 33 to stop the closing operation of the tide door 3. (S13). At this time, the possible opening degree determination unit 32 increments the count value of the second step counter (adds 1 to the count value) (S14), and returns to the determination process of step S12.

On the other hand, when the current time has passed the fully closed operation start time 81 (YES in S12), the possible opening degree determination unit 32 outputs a fully closed command to the opening degree control unit 33 to immediately immediately prevent the tide door. The closing operation is performed until 3 is fully closed (S15). This closing operation corresponds to the closing operation pattern of Graph 86 shown in FIG. This flowchart ends when the tide door 3 is fully closed.

Here, after the process of step S10 (start of closing operation) and before the process of step S11, the possible opening degree determination unit 32 determines whether or not there is an evacuee outside the evacuation certainty area 52 (S10 (not shown). '), If there are no evacuees outside the sure evacuation area 52 (NO in S10'), the tide door 3 may be fully closed immediately. Such a closing operation corresponds to the closing operation pattern of Graph 87 shown in FIG. If there is an evacuee outside the evacuation certainty area 52 (YES in S10'), the process proceeds to the determination process in step S11.

Further, after the processing of step S11 (determination of whether or not the opening degree of the tide door 3 is the limit opening degree 84 or less) and before the processing of step S12, the possible opening degree determination unit 32 is outside the evacuation certainty area 52. It may be determined whether or not there is an evacuee in (S11'not shown), and if there is no evacuee outside the sure evacuation area 52 (NO in S11'), the tide door 3 may be fully closed. Such a closing operation corresponds to the closing operation pattern of the graph 86a shown in FIG. If there is an evacuee outside the evacuation certainty area 52 (YES in S11'), the process proceeds to the determination process in step S12. In this case, after the process of step S14, the process returns to the determination process of step S11'.

According to the above-described embodiment, the tide door 3 can be fully closed by the possible opening degree determination unit 32 before the tsunami arrival time 83 according to the tsunami information (tsunami arrival time 83) and the evacuation situation. The opening degree of 3 is determined, and the closing operation of the tide door 3 is controlled. As a result, as long as there is time to arrive at the tsunami, as many evacuees as possible can be safely evacuated from the tide door 3 without leaving the evacuee inside the tide door 3.

In addition, since the tide door 3 is automatically fully closed before the tsunami arrival time 83, the workers involved in the closing operation of the tide door 3 are left behind inside the tide door 3 (on the sea side) as in the past. There is no.

<2. Modification example>
In the above-described embodiment, the control target of the tide door automatic control system 100 is the tide door 3 of the coupure 2, but the control target may be the tide door (gate) of the floodgate. In this case, the evacuation sure area 52 is replaced with an area where the ship can surely evacuate to the tide door when the tsunami information is received and the closing operation of the tide door of the floodgate is started immediately. When a tsunami occurs, ships inside the sure evacuation area 52 evacuate to the outside (land side) of the water gate, and ships outside the sure evacuation area 52 rush to the water gate to evacuate or move offshore. To seek refuge. The possible opening degree determination unit 32 controls the opening degree of the tide door of the floodgate according to the tsunami information and the evacuation status of the ship, as in the above-described embodiment.

Further, in the above-described embodiment, the evacuees are evacuated on foot or in a wheelchair, but the evacuees may evacuate in a vehicle (for example, a bicycle, a motorcycle, a car, etc.). In this case, the evacuation certainty area calculation unit 23 calculates the evacuation certainty area 52 based on, for example, the general moving speed and the number of target vehicles. Then, the possible opening degree determination unit 32 determines the limit opening degree 84 corresponding to the width through which one target vehicle can pass.

Further, in the above-described embodiment, the tide door control device 30 receives the tsunami information from the surveillance camera 20 via the network N, but the present invention is not limited to this example. For example, the tide door control device 30 includes a tsunami information receiving unit 22, and the tsunami information receiving unit 22 receives the tsunami information transmitted from the tsunami information transmitting device 10 via the network N and the second communication unit 31. It may be configured. Alternatively, the surveillance camera 20 and the tide door control device 30 may be integrally configured.

Furthermore, the present invention is not limited to the above-described embodiments, and it goes without saying that various other application examples and modifications can be taken as long as the gist of the present invention described in the claims is not deviated. ..

For example, the above-described embodiment describes the configuration of the apparatus and the system in detail and concretely in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the components described. In addition, it is possible to replace a part of the configuration of one embodiment with a component of another embodiment. It is also possible to add components of another embodiment to the configuration of one embodiment. It is also possible to add, delete, or replace other components with respect to a part of the configuration of each embodiment.

Further, each of the above-mentioned components, functions, processing units, processing means and the like may be realized by hardware in part or all of them, for example, by designing an integrated circuit.

1 ... Seawall, 2 ... Coupure, 3 ... Tide door, 10 ... Tsunami information transmitter, 20 ... Surveillance camera, 21 ... First communication unit, 22 ... Tsunami information reception unit, 23 ... Evacuation certain area calculation unit, 24 ... Tide door information storage unit, 25 ... Imaging unit, 26 ... Video processing unit, 27 ... Evacuation completion determination unit, 30 ... Tide door control device, 31 ... Second communication unit, 32 ... Possible opening determination unit, 33 ... Opening control unit, 34 ... Tide door power unit, 35 ... Opening meter, 50 ... Monitoring range, 51-1, 51-2 ... Evacuees, 52 ... Evacuation certain area, 61, 71 ... CPU, 80 ... Closed Operation start time, 81 ... Fully closed operation start time, 82 ... Fully closed completion time, 83 ... Tsunami arrival time, 84 ... Limit opening, 90 ... Time table, 100 ... Seawall automatic control system

Claims (6)

An imaging unit that captures the monitoring area around the tide door,
A receiver that receives flood forecast information including information on the arrival time of flood damage,
A storage unit that stores information related to the specifications of the tide door,
When the evacuees receive the flood forecast information in the monitoring area of the imaging unit and immediately start closing the tide door based on the flood forecast information and the information related to the specifications of the tide door, the evacuee A calculation unit that calculates the evacuation area where you can evacuate to the tide door.
Based on the video data of the monitoring area, a determination unit that determines the evacuation status including whether or not an evacuee remains outside the sure evacuation area
A determination unit that determines the possible opening degree of the tide door based on the flood forecast information and the evacuation situation, and
A tide door automatic control system including a control unit that controls driving of the tide door based on a possible opening degree determined by the determination unit. The automatic tide door control system according to claim 1, wherein the storage unit stores at least the speed of the closing operation of the tide door as information regarding the specifications of the tide door. The determination unit determines whether or not the evacuees remain outside the evacuation certainty area, and determines whether or not the evacuees remain.
2. When the determination unit determines that no evacuees remain outside the sure evacuation area, the determination unit fully closes the possible opening degree of the tide door, assuming that the evacuation is completed. Tide door automatic control system described in. The determination unit determines the allowable opening degree of the tide door at the present time from the evacuation status obtained from the determination unit and the flood damage arrival time until the flood damage reaches the tide door, and reaches the flood damage. The automatic tide door control system according to claim 2, wherein the tide door is completely closed by the control unit. The second aspect of claim 2, wherein the control unit selects either a closing operation or a stop operation for closing the tide door to a possible opening degree determined by the determination unit, and controls the drive of the tide door by the selected operation. Tide door automatic control system. The step of photographing the monitoring area around the tide door with the image pickup unit,
Steps to receive flood forecast information, including information on flood arrival times,
When the evacuees receive the flood forecast information in the monitoring area of the imaging unit and immediately start closing the tide door based on the flood forecast information and the information related to the specifications of the tide door, the evacuee Steps to calculate the evacuation area where you can evacuate to the tide door
Based on the video data of the monitoring area, the step of determining the evacuation status including whether or not the evacuees remain outside the sure evacuation area,
A step of determining the possible opening degree of the tide door based on the flood forecast information and the evacuation situation, and
A tide door automatic control method comprising a step of controlling the drive of the tide door based on the determined possible opening degree.

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