JP2020136989A - Monitoring system - Google Patents

Abstract

To provide a monitoring system that can determine an optimum evacuation route by analyzing flows of persons who are successful in evacuation using monitoring cameras or sensors and notify evacuating persons during evacuation on the basis of the optimum evacuation route.SOLUTION: A monitoring system repeats processing of: measuring flows of persons by a processor 1 using sensors 2 or monitoring cameras 3; when a disaster occurs, measuring an evacuation time and evacuation direction of an evacuation successful person who is successful in evacuation in a specific period; and, on the basis of the measured evacuation time and evacuation direction of the evacuation successful person, determining an optimum evacuation direction for evacuating persons during evacuation in a specific period after the measurement.SELECTED DRAWING: Figure 1

Description

The present invention relates to a monitoring system in an underground mall or a facility, and more particularly to a monitoring system capable of determining an optimum evacuation route in the event of a disaster or the like.

[Conventional technology]
Conventionally, in an underground shopping mall or a facility, a fixed display indicating an evacuation exit has been lit for an evacuation route in the event of a disaster.
However, complicated underground mall passages prevent damage / collapse of structures, flooding from ground entrances and parking lots, fire spread / smoke, congestion by users, and fire spread in the event of a disaster such as an earthquake, flood, or fire. Due to the closure of entrances and exits, fixed evacuation routes are not sufficient.

In addition, in the underground mall, surveillance cameras and the like are installed to monitor the flow of people, and in the event of a disaster, security guards are instructing evacuation routes from the images of the surveillance cameras.
However, it cannot adequately respond to changes in the situation during a disaster.

[Related technology]
As a related prior art, there is Japanese Patent Application Laid-Open No. 2006-085250 “Disaster Prevention System” (Patent Document 1).
Patent Document 1 indicates that in a disaster prevention system such as a school, an access point for promptly reporting an abnormality, making a roll call, and guiding evacuation is installed, and an appropriate evacuation route is obtained from the position of the access point. ing.

Japanese Unexamined Patent Publication No. 2006-085250

However, there is a problem that the conventional evacuation method and monitoring system at the time of a disaster cannot sufficiently respond to changes in the situation at the time of a disaster.

In other words, when the situation of disaster progress at the time of a disaster, the situation of congestion of users, the closing of doorways, etc. change, it is possible to determine and notify the optimal evacuation route for evacuees (evacuees). It was difficult.

It should be noted that Patent Document 1 does not describe that the flow of evacuees is grasped by using sensors such as surveillance cameras and radars, and the optimum evacuation route is determined and notified.

The present invention has been made in view of the above circumstances, and the optimum evacuation route is determined by analyzing the flow of those who have completed evacuation using a surveillance camera or a sensor, and the optimum evacuation route is selected for the evacuees who are in the middle of evacuation. An object of the present invention is to provide a monitoring system capable of performing based notification.

The present invention for solving the problem of the above-mentioned conventional example is a monitoring system for monitoring an evacuation route, and is a process of connecting to a plurality of sensors or surveillance cameras installed in the evacuation route, or a plurality of sensors and a surveillance camera. Evacuation of people who have not completed evacuation from the evacuation time and evacuation direction required for evacuation of people who have completed evacuation within a specific period at the time of a disaster, with equipment and processing equipment monitoring the flow of people in the evacuation route. It is characterized by repeating the process of determining the direction.

The present invention is characterized in that, in the above-mentioned monitoring system, the processing device excludes data having a significantly long evacuation time from the data of a person who has completed evacuation.

The present invention is characterized in that, in the above monitoring system, a voice output unit provided in an evacuation route is connected to the processing device, and the processing device outputs the evacuation direction of a person who has not completed evacuation to the voice output unit. And.

The present invention is characterized in that, in the above monitoring system, a display unit provided in an evacuation route is connected to the processing device, and the processing device outputs the evacuation direction of a person who has not completed evacuation to the display unit. ..

In the above-mentioned monitoring system, the processing device monitors the flow of people who have not completed evacuation, and displays the evacuation direction and the speed of evacuation on the display unit according to the flow of people who have not completed evacuation. It is characterized by.

In the above monitoring system, when there is no person who has completed evacuation within the specific period, the evacuation time of the person who has completed evacuation in the period before the specific period becomes longer than before, and the ratio thereof. When is above a certain level, the evacuation direction is not determined, and when the lengthened ratio is not above a certain level, the immediately preceding evacuation direction is used for determination.

The present invention is characterized in that, in the above monitoring system, the processing device calculates the average of the evacuation time for each evacuation direction, and determines the evacuation direction in which the average of the evacuation time is short as the evacuation direction of a person who has not completed evacuation. And.

The present invention is characterized in that, in the above monitoring system, the processing device determines the evacuation direction of the person who has completed evacuation with the shortest evacuation time from a specific starting point of the evacuation route as the evacuation direction of the person who has not completed evacuation. To do.

According to the present invention, a plurality of sensors or surveillance cameras installed in the evacuation route, or a processing device connected to the plurality of sensors and the surveillance camera are provided, and the processing device monitors the flow of people in the evacuation route. It is ideal for evacuees in the middle of evacuation because it is a monitoring system that repeats the process of determining the evacuation direction of people who have not completed evacuation from the evacuation time required for evacuation of those who completed evacuation within a specific period at the time of disaster It has the effect of being able to provide a variety of evacuation routes and evacuate quickly and safely.

It is the schematic of the 1st system. It is the schematic of the 2nd system. It is a figure which shows the image of the 1st evacuation route. It is a figure which shows the evacuation record table (1) to the exit y. It is a figure which shows the evacuation record table (1) to the exit z. It is a figure which shows the image of the 2nd evacuation route. It is a figure which shows the evacuation record table (2) to the exit y. It is a figure which shows the evacuation record table (2) to the exit z. It is a figure which shows the evacuation display example in this system. It is a flow chart of the optimum evacuation route determination process. It is a flow chart of the average required time calculation process.

Embodiments of the present invention will be described with reference to the drawings.
[Outline of Embodiment]
The monitoring system (this system) according to the embodiment of the present invention measures the flow of people with a processing device using a sensor or a monitoring camera, and succeeds in evacuating within a specific period in the event of a disaster. Measure the evacuation time and evacuation route (evacuation direction) of the person, and based on the measured evacuation time and evacuation route of the successful evacuees, determine the optimum evacuation route for the evacuees in the middle of evacuation within the subsequent specific period. It is possible to provide the optimum evacuation route to the evacuees who are in the middle of evacuation, and to evacuate quickly and safely.

[First system: Fig. 1]
The first system in this system will be described with reference to FIG. FIG. 1 is a schematic view of the first system.
As shown in FIG. 1, the first system includes a processing device 1a, a plurality of sensors 2, a display unit 4, and an audio output unit 5.
In FIG. 1, the processing device 1a recognizes (measures the flow of people) that the person a is traveling in the passage x to the left.

The sensor 2 measures, for example, the flow of people with a radar by a reflected wave. Specifically, it recognizes an object by the reflected wave of the radar, recognizes the object as a person if it moves, and measures the flow of the person by following the trajectory. The data to be measured is position information and time information.
The processing device 1a stores the position information in which the sensor 2 is installed, inputs the data of the flow of individual people acquired by the sensor 2, and monitors the flow of the entire person in the underground mall or the facility. are doing.

The display unit 4 displays the evacuation route to the evacuees when a disaster occurs in the underground mall.
The voice output unit 5 outputs instructions to evacuees by voice when a disaster occurs in an underground shopping mall.
The detailed operations of the processing device 1a, the display unit 4, and the audio output unit 5 when a disaster occurs will be described later.

[Second system: Fig. 2]
The second system in this system will be described with reference to FIG. FIG. 2 is a schematic view of the second system.
As shown in FIG. 2, the second system includes a processing device 1b, a plurality of surveillance cameras 3, a display unit 4, and an audio output unit 5.
In FIG. 2, the processing device 1b recognizes (measures the flow of people) that the person a is traveling in the passage x to the left.

The surveillance camera 3 measures the flow of people by photographing the flow of people for a specific period of time. Specifically, the flow of people is measured by recognizing people by photographing the inside of the route and monitoring the movement status of each person.
The processing device 1b stores the position information in which the surveillance camera 3 is installed, and inputs the image data of the flow of people taken by the surveillance camera 3 to display the flow of the entire people in the underground mall or the facility. I'm watching. The data to be measured is position information and time information.

Like the first system, the display unit 4 and the audio output unit 5 operate when a disaster occurs in the underground mall.
The detailed operations of the processing device 1b, the display unit 4, and the audio output unit 5 when a disaster occurs will be described later.
The processing device 1a of the first system and the processing device 1b of the second system may be collectively referred to as "processing device 1".
The processing device 1 includes a control unit, a storage unit, and an interface unit inside.

The sensor 2 or the surveillance camera 3 is connected to the interface unit, and the display unit 4 and the audio output unit 5 are connected to the interface unit.
The storage unit stores the processing program, the position information of the sensor 2 or the surveillance camera 3, and stores the data of the flow of people from the sensor 2 or the image data of the flow of people from the surveillance camera 3. The data from the sensor 2 and the data from the surveillance camera 3 are collectively referred to as "people flow data".
The control unit determines the optimum evacuation route (evacuation direction) in the event of a disaster based on the input data of the flow of people, and notifies the display unit 4 and the voice output unit 5 of the optimum evacuation route. Specific processing will be described later.

[Image of the first evacuation route: Fig. 3]
Next, the situation of evacuation in the passage x without obstacles will be described with reference to FIG. 3, for example, as a first evacuation route image. FIG. 3 is a diagram showing an image of the first evacuation route.
As shown in FIG. 3, the persons a to e are at the place n (starting point) in the passage x, the persons a, b, and c have evacuated to the exit y, and the persons d and e have evacuated to the exit z (completed). ).
The place n is a place that can be evacuated to either the exit y or the exit z, and is set by the designer of this system.

[Evacuation record to exit y (1): Fig. 4]
FIG. 4 shows the results of people who evacuated to exit y in the situation of FIG. FIG. 4 is a diagram showing an evacuation record table (1) to the exit y.
As shown in FIG. 4, for the people a, b, and c who evacuated to the exit y, the required time of each person from the place n (starting point) and the moving distance of each person from the place n are shown. The required time is the time from the starting point until the person recognized by the surveillance camera 3 or the like reaches the exit.
Further, the average time required to evacuate to the exit y is calculated, but the person c is excluded from the average calculation because the distance traveled from the place n is significantly longer than that of the people a and b. When the average required time is calculated using the required time of people a and b, it is 110 seconds [= (100 + 120) / 2].

[Evacuation record to exit z (1): Fig. 5]
In addition, FIG. 5 shows the results of people who evacuated to exit z in the situation of FIG. FIG. 5 is a diagram showing an evacuation record table (1) to the exit z.
As shown in FIG. 5, for the people d and e who evacuated to the exit z, the required time of each person from the place n and the distance traveled by each person from the place n are shown.
Further, the average time required to evacuate to the exit z is calculated, but since the people d and e have the same travel distance of 80 m from the place n, there is no data to be excluded and the time required for the people d and e is used. The average required time is 90 seconds [= (80 + 100) / 2].

Based on the average time required in FIGS. 4 and 5, the control unit of the processing device 1 determines that it is optimal for the evacuees at the location n to evacuate to the exit z instead of the exit y, and recognizes the exit z as the optimum exit. ..
Then, the processing device 1 voice-guidance or display-outputs the evacuation direction to the voice output unit 5 or the display unit 4 installed near the place n so as to evacuate to the exit z.

[Image of second evacuation route: Fig. 6]
Next, the situation of evacuation in the passage x where the obstacle m is located will be described with reference to FIG. 6 as, for example, a second evacuation route image. FIG. 6 is a diagram showing an image of the second evacuation route.
As shown in FIG. 6, it is assumed that the persons a to e are at the place n in the passage x, the persons a, b, and c have evacuated to the exit y, and the persons d and e have evacuated to the exit z (completed). ..
There are two obstacles m on the exit z side.

[Evacuation record to exit y (2): Fig. 7]
Then, FIG. 7 shows the results of people who evacuated to the exit y in the situation of FIG. FIG. 7 is a diagram showing an evacuation record table (2) to the exit y.
As shown in FIG. 7, for the persons a, b, and c who evacuated to the exit y, the required time of each person from the place n and the travel distance of each person from the place n are shown.
Further, the average time required to evacuate to the exit y is calculated, but the person c is excluded from the average calculation because the distance traveled from the place n is significantly longer than that of the people a and b. When the average required time is calculated using the required time of people a and b, it is 110 seconds [= (100 + 120) / 2].

[Evacuation record to exit z (2): Fig. 8]
In addition, FIG. 8 shows the results of people who evacuated to exit z in the situation of FIG. FIG. 8 is a diagram showing an evacuation record table (2) to the exit z.
As shown in FIG. 8, for the people d and e who evacuated to the exit z, the required time of each person from the place n and the distance traveled by each person from the place n are shown.
Further, the average time required to evacuate to the exit z is calculated, but for the people d and e, since the difference in the moving distance from the place n is within, for example, a preset value (50 m), there is no data to be excluded and the person. When the average required time is calculated using the required times of d and e, it becomes 120 seconds [= (120 + 120) / 2]. The time required for people d and e is longer than when there is no obstacle because there is an obstacle m.

Based on the average time required in FIGS. 7 and 8, the control unit of the processing device 1 determines that it is optimal for the evacuees at the location n to evacuate to the exit y instead of the exit z, and recognizes the exit y as the optimum exit. ..
Then, the processing device 1 voice-guidance or display-outputs the evacuation direction to the voice output unit 5 or the display unit 4 installed near the place n so as to evacuate to the exit y.

The optimum evacuation exit was determined using the average required time of the evacuation completers, but the exit with the shortest evacuation time required among the evacuation completers may be the optimum exit.
Here, the obstacle m may be a falling object, a collapsed object, or the like, but it may also be flood water, fire smoke, or flame.

[Example of evacuation display: Fig. 9]
Next, an example of evacuation display in this system will be described with reference to FIG. FIG. 9 is a diagram showing an example of an evacuation display in this system.
Both FIGS. 9A and 9B show the optimum evacuation to the right.
However, (a) indicates that few people evacuated and escaped at an average speed of 5 km / h, for example. (B) shows that people evacuating due to obstacles and congestion were crowded and escaped at an average speed of 2 km / h, for example.

In other words, the direction of the arrow indicates the optimum direction of the evacuation exit, the length of the arrow indicates the speed of the average speed (longer is faster, shorter is slower), and the thickness of the arrow is the number of people. Or the density (thin is less people [low density], thick is more people [high density]).

As for the average speed in the passage, since the required time and the moving distance are stored in FIGS. 4 and 5 or 7 and 8, the average speed (km / h) = (average moving distance / 1000) / (average required time / 3600). ) Is required.
When calculating the average speed, one direction is a positive direction (positive value) and the opposite direction is a negative direction (negative value). In addition, when traveling diagonally, only the elements in the straight direction shall be added to the average calculation.
Since the evacuation situation changes from moment to moment, the average speed is calculated periodically, and the direction, length, and thickness of the arrow are changed according to the situation.

In the above, the average speed is calculated and displayed based on the data of the person who completed the evacuation (successful evacuation person), but the person who is currently in the passage (route) (the person who has not completed evacuation) for a certain period of time. The average speed may be calculated from the real-time flow data (collected data) of the people inside and the arrow may be displayed.

[Evacuation route extraction process: Fig. 10]
Next, the optimum evacuation route determination process in the processing device 1 of this system will be described with reference to FIG. FIG. 10 is a flow chart of the optimum evacuation route determination process.
The processing is realized by the control unit of the processing device 1 reading and executing a processing program stored in the storage unit.
As shown in FIG. 10, when the control unit of the processing device 1 starts the process of determining the optimum exit from the predetermined starting point (S1), the person who succeeds in evacuating from the starting point within a certain period (successful evacuation person). ) Is extracted (S2).

Then, the average required time is calculated for each evacuation port (exit) (S3). In other words, it is assumed that there are multiple exits. The details of the calculation process of the average required time will be described later.
Among the plurality of exits, the exit having the shortest calculated average required time is determined as the optimum evacuation route (S4), and the process is completed (S5).

[Average required time calculation process: FIG. 11]
Next, the details of the average required time calculation process in FIG. 10 will be described with reference to FIG. FIG. 11 is a flow chart of the average required time calculation process.
As shown in FIG. 11, when the control unit of the processing device 1 starts calculating the average required time for each evacuation port (S11), the evacuees are successfully evacuated within a specific period (the period). It is determined whether or not there is a person (evacuation completed person) (S12).

If there are successful evacuees within the period (if there is), the data of the person whose route distance (movement distance) from the starting point to the exit is significantly longer than the shortest moving distance is excluded (S13), and further, the exit The average required time from the starting point is calculated for each (S14), and the process is completed (S18).

In the determination process S12, when there is no successful evacuation person within the period (when there is no evacuation), the evacuation route status is determined (S15).
The evacuation route status determination process compares the latest (immediately before) calculated average required time (current average required time) with the average required time in the period before that (past average required time), and the length is If there is more than a certain percentage, it is judged that the evacuation route situation has deteriorated significantly due to obstacles and congestion (“significant deterioration”).
If the average length of time required is not more than a certain percentage, it is determined that there is no significant change.

When it is determined in the determination process S15 that "there is no significant change", the average required time of the immediately preceding period is adopted (S16), and the process is terminated (S18).
In addition, when it is determined as "significant deterioration" in the determination process S15, the adoption of the past average required time is invalidated until the latest actual data of successful evacuation persons can be collected, and the optimum evacuation route is determined. No evacuation exit is available (S17), and the process is terminated (S18). It should be noted that the evacuation exit unavailability may be output to the display unit 4 or the audio output unit 5.

In the determination process S15, the current average required time and the past average required time were compared to determine the status of the evacuation route, but the movement of the person currently on the route (person who has not completed evacuation) during a specific period. The speed is calculated, and if the movement speed deteriorates by a certain percentage or more compared to the movement speed in the past specific period, for example, if the movement speed becomes less than half, it is judged as "significant deterioration". If there is no deterioration of a certain percentage or more, it may be determined that there is no significant change.

[Effect of Embodiment]
According to this system, the flow of people is measured by the processing device 1 using the sensor 2 and the surveillance camera 3, and in the event of a disaster, the evacuation time and evacuation direction of successful evacuees who succeeded in evacuating within a specific period. Based on the measured evacuation time and evacuation direction of successful evacuees, the process of determining the optimum evacuation direction for evacuees in the middle of evacuation is repeated within a specific period after that. It has the effect of providing the person with the optimum evacuation direction and evacuating safely and effectively.

The present invention is a monitoring system that can analyze the flow of people who have succeeded in evacuating using a surveillance camera or sensor to determine the optimum evacuation route, and notify the evacuees in the middle of evacuation based on the optimum evacuation route. It is suitable for.

1,1a, 1b ... Processing device, 2 ... Sensor, 3 ... Surveillance camera, 4 ... Display unit, 5 ... Audio output unit

Claims (8)

A monitoring system that monitors evacuation routes
A plurality of sensors or surveillance cameras installed in the evacuation route, or processing devices connected to the plurality of sensors and surveillance cameras are provided.
The processing device monitors the flow of people in the evacuation route, and determines the evacuation time required for evacuation of people who have completed evacuation within a specific period at the time of a disaster and the evacuation direction of people who have not completed evacuation. A monitoring system characterized by repeating the process of determining. The monitoring system according to claim 1, wherein the processing device is determined by excluding data having a significantly long evacuation time from the data of a person who has completed evacuation. An audio output unit provided in the evacuation route is connected to the processing device.
The monitoring system according to claim 1 or 2, wherein the processing device outputs an evacuation direction of a person who has not completed evacuation to the voice output unit. A display unit provided in the evacuation route is connected to the processing device.
The monitoring system according to claim 1 or 2, wherein the processing device outputs an evacuation direction of a person who has not completed evacuation to the display unit. The fourth aspect of claim 4, wherein the processing device monitors the flow of people who have not completed evacuation and displays the evacuation direction and the speed of evacuation on the display unit according to the flow of people who have not completed evacuation. Monitoring system. When there are no people who have completed evacuation within the specific period, the processing device has a longer evacuation time than before for those who have completed evacuation in the period before the specific period, and when the ratio is above a certain level. The monitoring system according to any one of claims 1 to 5, wherein the evacuation direction is not determined and the immediately preceding evacuation direction is used for determination when the lengthened ratio is not more than a certain level. The processing device calculates the average of the evacuation time for each evacuation direction, and determines the evacuation direction in which the average of the evacuation time is short as the evacuation direction of a person who has not completed evacuation. One of the monitoring systems described. Any of claims 1 to 6, wherein the processing device determines the evacuation direction of the person who has completed evacuation with the shortest evacuation time from a specific starting point of the evacuation route in the evacuation direction of the person who has not completed evacuation. Described monitoring system.