JP3192881U - Entrance / exit monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an entrance / exit monitoring device capable of inexpensively monitoring the entrance / exit of an object in a specific section. An entrance / exit monitoring device 1 is installed at one entrance / exit of a specific section and the other entrance / exit, and photographs the entry / exit state of an object in order to count the number of entrances and exits of the object in the specific section. One-sided imaging unit 10 and the other-side imaging unit 10, and a control unit 20 that controls whether or not to display alert information based on the count of the number of entrances and exits of the entrance and exit on one side and the entrance and exit on the other side. , A display unit 23 that displays alert information based on the control of the control unit, and the control unit has a sum of the number of entrances of objects at one entrance and the other entrance and exit at one entrance and the other entrance. When the sum of the number of exits of the objects is greater than the sum of the number of exits of the objects, the display unit displays the alert information, and the sum of the number of entrances of the objects at one entrance and the other entrance and the number of exits of the objects at one entrance and the other entrance. When the sums are equal, the warning information on the display is hidden. [Selection diagram] Fig. 1

Description

  The present invention relates to an entry / exit monitoring device that monitors entry / exit (exit / exit) of an object in a specific section.

  For example, Patent Document 1 discloses a technology related to a pedestrian safety system in a tunnel that is constructed in a tunnel and urges drivers of all vehicles passing through the tunnel to be aware of the presence of pedestrians. .

  According to the technique disclosed in Patent Document 1, a mat sensor is arranged and arranged on at least one of the left and right edges of the roadway, and the mat sensor detects the weight of the pedestrian, thereby being electrically connected to the mat sensor. The presence of a pedestrian passing through the tunnel by flashing the light source for the person is notified.

JP 2007-287033 A

  However, according to the technique disclosed in Patent Document 1, it is necessary to arrange and arrange a large number of mat sensors in the roadway extending direction, so that the system is relatively expensive.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an entrance / exit monitoring apparatus that can monitor entrance / exit of an object in a specific section such as a tunnel at a low cost.

In order to achieve the above object, the present invention is grasped by the following configuration.
(1) An entrance / exit monitoring device for monitoring entry / exit of an object in a specific section of the present invention is installed at one of the entrances / exits of the specific section, and counts the number of entrances and exits of the object into the specific section. In order to count the number of entrances and exits of the object into the specific section, the one-side imaging unit for capturing the entrance / exit state of the object and the other entrance / exit of the specific section The other side imaging unit that shoots the entrance / exit state, and a control unit that controls whether or not to display alert information based on the number of entrances and exits of the one side entrance and the other side entrance And a display unit that displays the alert information based on the control of the control unit, wherein the control unit is configured such that the sum of the number of entrances of the object at the one entrance and the other entrance is the one Entrance and exit of the other When the number of exits of the object at the entrance is greater than the sum of the number of exits of the object, the warning information is displayed on the display unit, and the sum of the number of entrances of the object at the one entrance and the other entrance and the one exit and the entrance When the sum of the number of exits of the object at the other entrance / exit is equal, the alert information on the display unit is not displayed.

  (2) In the configuration of (1) above, the control unit outputs an alarm when the sum of the number of entrances is greater than the sum of the number of exits for a predetermined time or more.

(3) In the configuration of the above (1) or (2), the control unit detects the entrance of the object from the one-side entrance and the other-side entrance and exits for a predetermined time or more, If no exit of the object is detected from the one-side entrance and the other-side entrance, an alarm is output.

(4) In the configuration of (1) or (2), the control unit is configured to detect the entry of the object from the entrance / exit on the one side and the entrance / exit on the other side. When the exit of the object is detected from the entrance and the other entrance, an alarm is output.

(5) In any one configuration of (1) to (4) above, the object is a pedestrian.

  ADVANTAGE OF THE INVENTION According to this invention, the entrance / exit monitoring apparatus which can monitor the entrance / exit of the object in a specific area cheaply can be provided.

It is a figure which shows the system configuration | structure of the entrance / exit monitoring apparatus which concerns on embodiment of this invention. It is an operation | movement sequence diagram of the entrance / exit monitoring apparatus which concerns on embodiment of this invention. It is a figure explaining the outline of the entrance / exit monitoring apparatus which concerns on embodiment of this invention. It is a figure which shows the display part which displayed the alerting information of the entrance / exit monitoring apparatus which concerns on embodiment of this invention.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described in detail with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment.

(Schematic configuration of the embodiment)
FIG. 3 is a diagram for explaining the outline of the entrance / exit monitoring apparatus according to the present embodiment, showing a case of a tunnel as a specific section, and showing a case where an object to be monitored is a person (pedestrian).

As shown in FIG. 3, the entrance / exit monitoring device of the present embodiment includes a one-side imaging unit (for example, stereo camera # 1) installed at one entrance (left side in the figure) of the tunnel and the other entrance ( The other side imaging unit (for example, stereo camera # 2) installed on the right side of the figure and a control unit (for example, management server) (not shown) installed in the tunnel monitoring room or the like.
Stereo camera # 1 and stereo camera # 2 are connected to the management server via a LAN, an IP network, or the like.

  Further, as shown in FIG. 4, the entrance / exit monitoring device of the present embodiment includes a display unit 30 that displays alert information installed near one of the entrances and the other entrance of the tunnel, and the management server includes Connected via LAN.

Next, a detailed configuration of the present embodiment will be described with reference to FIG.
FIG. 1 is a configuration diagram showing an overall configuration of an entrance / exit monitoring device 1 according to the present embodiment.
(One side and other side imaging unit)
In this embodiment, the stereo camera 10 (# 1 and # 2) is used as the one-side and other-side imaging units, and the stereo camera 10 (# 1 and # 2) has the same basic configuration. The image processing unit 11 and the communication processing unit 12 are provided.
Since the basic configuration of the stereo camera 10 (# 1 and # 2) is the same, only the stereo camera 10 (# 1) on one side will be described below unless otherwise specified. It is described as a camera 10.

  Although not shown, the image processing unit 11 of the stereo camera 10 captures the state of the entrance / exit of the tunnel, and the number of pedestrians entering from the entrance / exit by analyzing the captured image and the walk that has exited. An image analysis unit for obtaining the number of visitors, and a storage unit for storing the number of visitors and the number of exits.

  Although not particularly limited, the image sensor unit includes two image sensors arranged at a certain distance, and an image captured by one image sensor and an image captured by the other image sensor These two images can be acquired.

And the image analysis part of the image processing part 11 performs the parallax search described in Unexamined-Japanese-Patent No. 2013-117896, for example based on the two images, specifies a pedestrian, and shows the movement locus | trajectory of the pedestrian. By tracking, whether the pedestrian has entered or exited from the entrance / exit, when entering, increment the counter for the number of entrances to the storage unit, and when exiting, increase the counter for the number of exits of the storage unit by 1 The number of visitors and exits is recorded.
Note that the method for obtaining the number of visitors and the number of visitors leaving is not limited to the above, and may be replaced with another method for processing an image acquired by a camera.
Further, the image analysis is performed by the image analysis unit of the image processing unit 11 as described above. However, since this analysis itself is a process in the image processing unit 11, this analysis will be simply performed in the following. It is described as being performed by the processing unit 11.

  On the other hand, the communication processing unit 12 of the stereo camera 10 receives the image data captured by the imaging unit of the stereo camera 10 and the data of the number of entrances and the number of exits from, for example, a management server 20 (control unit) such as a tunnel monitoring room via an IP network. ).

(Control part)
The management server 20 (control unit) includes a communication processing unit 21, an object monitoring unit 22, and a display unit 23 (for example, a display screen).
The management server 20 receives image data from the stereo camera 10 and data on the number of entrances and the number of exits at the communication processing unit 21.

The received image data is stored in a storage unit (not shown) of the management server 20 and displayed on the display unit 23.
Further, the received data on the number of entrances and the number of exits are stored in an entrance number counter and an exit number counter in a storage unit (not shown) of the management server 20.

  In the present embodiment, the storage unit is provided with four counters as an entrance number counter at one entrance, an exit number counter at one entrance, an entrance number counter at the other entrance, and an exit number counter at the other entrance. The entrance number data sent from the one-side imaging unit (stereo camera 10 (# 1)) is recorded in the entrance counter at one of the entrances and exits of the storage unit of the management server 20, and the exit number data is It is recorded in the exit counter at one doorway.

  Further, the data on the number of entrances sent from the other side imaging unit (stereo camera 10 (# 2)) is recorded in the entrance number counter at the other entrance of the storage unit of the management server 20, and the data on the number of exits is Recorded in the exit counter at the other entrance.

  The object monitoring unit 22 of the management server 20 obtains the presence / absence of pedestrians in the tunnel based on the data on the number of entrances and exits recorded in the counter of the storage unit, and displays the display screen (display unit 23) of the management server 20 itself. ) Or display alerting information such as pedestrian attention on the display unit 30 shown in FIG.

  Specifically, the object monitoring unit 22 acquires data on the number of entrances from the entrance number counter at one of the entrances and the entrance number counter at the other entrance of the storage unit of the management server 20, and sums them (sums them) The total number of pedestrians who have entered the tunnel is calculated.

  Further, the object monitoring unit 22 obtains exit number data from the exit number counter at one of the entrances and the exit number counter at the other entrance of the storage unit of the management server 20 and sums them. By doing this, the total (sum) of the number of pedestrians leaving the tunnel is obtained.

  Then, the object monitoring unit 22 compares the total number of entrances (sum) with the total number of exits (sum), and when the total number of entrances (sum) is greater than the total number of exits (sum), FIG. A display signal for displaying caution information such as pedestrian attention as shown is transmitted from the communication processing unit 21 to the display unit 30.

  On the other hand, when the total number of entrances (sum) is equal to the total number of exits (sum), the alert information such as pedestrian attention displayed on the display unit 30 is erased, and the information is hidden for non-display. The signal is transmitted from the communication processing unit 21 to the display unit 30.

(Display section)
The display unit 30 is a display monitor having a high visual effect both day and night, such as a display plate having an LED (Light Emitted Diode) panel, plasma, and LCD (Liquid Crystal Display).

  When the display unit 30 includes a communication processing unit (not shown) and receives a display signal for displaying alert information such as pedestrian attention from the control unit (management server 20), the pedestrian attention as shown in FIG. When the non-display signal for turning off the caution information such as the pedestrian's caution and receiving the non-display signal is received, the caution information is set to the non-display state.

(Operation of the embodiment)
Hereinafter, the operation of the entrance / exit monitoring apparatus 1 according to the present embodiment shown in FIG. 1 will be described in detail with reference to the sequence diagram of FIG. 2.

  First, the one-side imaging unit (stereo camera 10 (# 1)) always captures the state of one entrance / exit of the tunnel, and the image processing unit 11 constantly analyzes the captured image data, It is monitored whether entry and exit occur at the entrance, and the captured image data and the data of the number of entrances and exits are transmitted to the control unit (management server 20) installed in the tunnel monitoring room via the communication processing unit 12 and the IP network 40. ).

  Similarly, the other-side imaging unit (stereo camera 10 (# 2)) always images the state of the other entrance / exit of the tunnel, and the image processing unit 11 constantly analyzes the captured image data. The control unit (management server) installed in the tunnel monitoring room via the communication processing unit 12 and the IP network 40 is used to monitor whether entry and exit occur at the entrance and exit of the network. 20).

  When the control unit (management server 20) receives data from the one side imaging unit (stereo camera 10 (# 1)) and the other side imaging unit (stereo camera 10 (# 2)) by the communication processing unit 21 (step S11). ), The control unit (management server 20) records the entrance number A1 and exit number B1 of one entrance and the entrance number A2 and exit number B2 of the other entrance in the storage unit of the control unit (management server 20). Are obtained (A1 + A2) and the sum of the number of exits (B1 + B2), and these are compared (step S12).

  Here, when a pedestrian enters from one doorway, the count of the entrance number A1 is 1, and the count of the entrance number A2, the exit number B1, B2 is 0, this comparison (step S12) is the number of entrances. Since the sum of A1 + A2 is 1 and the sum of the exit numbers B1 + B2 is 0, A1 (1) + A2 (0)> B1 (0) + B2 (0).

When the sum of the number of entrances is larger than the sum of the number of exits, it means that there is a pedestrian in the tunnel, so that the control unit (management server 20) can display the display unit 30 from the communication processing unit 21. A display signal for displaying pedestrian attention alert information is transmitted (step S13).
When the display unit 30 receives the display signal, the display unit 30 displays pedestrian attention (step S14).

  On the other hand, after a certain period of time has passed and the pedestrian who has just entered leaves the other entrance / exit, the control unit (management server 20) performs the one-side imaging unit (stereo camera 10 (# 1)) and the other-side imaging unit ( Data from the stereo camera 10 (# 2)) is received by the communication processing unit 21 (step S15), and the sum of the number of entrances (A1 + A2) and the sum of the number of exits (B1 + B2) are obtained and compared (step S16). Since the sum of the numbers A1 + A2 is 1 and the sum of the exit numbers B1 + B2 is 1, A1 (1) + A2 (0) = B1 (0) + B2 (1).

And since the sum of the number of entrances and the sum of the number of exits being equal means that there is no pedestrian in the tunnel, the control unit (management server 20) can display the pedestrian from the communication processing unit 21 on the display unit 30. A non-display signal for deleting the attention alert information is transmitted (step S17).
In addition, the display part 30 which received the non-display signal erase | eliminates the alert information of pedestrian attention, and the display of the alert information of the display part 30 becomes non-display.
Further, when the display of the alert information on the display unit 30 is not displayed, since there is no pedestrian in the tunnel, at this timing, the one side imaging unit and the other side imaging unit (stereo camera 10). (# 1, # 2)) and the counter of the number of entrances and exits of the control unit (management server 20) may be reset and the counters may be refreshed.

  As described above, according to the entrance / exit monitoring device 1 of the present embodiment, while the pedestrian is present in the tunnel, the warning information of the pedestrian attention can be reliably displayed on the display unit 30, for example, If the walking speed of a person walking in the tunnel is slow or stopped due to some reason, the warning message disappears even though the person is in the tunnel. In addition to being able to avoid this, the configuration is also simple because the two imaging units (stereo cameras 10 (# 1, # 2)), the control unit (management server 20), and the display unit 30 are inexpensive. The exit monitoring device 1 can be realized.

  On the other hand, if the sum of the number of entrances exceeds the sum of the number of exits for an excessively long time, the tunnel may be abnormally congested. When the number is larger than the sum of the numbers, the control unit (management server 20) may output an alarm to its own display unit 23 to notify the monitoring person of the situation.

In addition, if the entrance of a pedestrian is detected from the entrance on one side and the entrance on the other side but the exit of the pedestrian is not detected from the entrance on the one side and the entrance on the other side for a long time, walking Since the detection of the person's entrance is likely to be a malfunction, when such a situation continues for a predetermined time or longer, the control unit (management server 20) controls the imaging unit (stereo camera 10 (# 1, # 2)) and the counter of the number of entrances and exits of the control unit (management server 20) may be reset, and pedestrian warning information on the display unit 30 may be hidden.
However, in this case, there is a possibility that pedestrians exist in the tunnel, so the control unit (management server 20) outputs an alarm to its display unit 23 together with the counter reset, It is preferable to encourage the chucking.

  In addition, if a pedestrian exit is detected from the one side entrance and the other side entrance although the entrance of the pedestrian is not detected from the one side entrance and the other side entrance, the device may be faulty. Since there is a high possibility, it is preferable that the control unit (management server 20) outputs an alarm to its own display unit 23 and prompts the monitoring staff to perform maintenance and inspection.

As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment.
In the said embodiment, although the form which the image processing part of the imaging part (stereo camera 10 (# 1, # 2)) has a function which detects a pedestrian's entrance and leaving was shown, the image data imaged by the imaging part Is also sent to the control unit (management server 20), the image analysis may be performed on the control unit (management server 20) side, and the number of pedestrians entering and leaving may be counted.

Moreover, in the said embodiment, although the specific description was performed exemplifying the case where the entrance / exit of the pedestrian is monitored when the specific section is a tunnel, the present invention has, for example, an imaging unit (stereo). Construction section (specific section) when the construction lane is a single lane during construction by simply changing the detection algorithm so that the detection target of the camera 10 (# 1, # 2)) is a vehicle. Needless to say, the present invention may be applied to monitoring the entry / exit of vehicles.
As described above, it is obvious to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. In addition, it is apparent from the description of the claims of the utility model registration that embodiments with such changes or improvements can be included in the technical scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Entrance / exit monitoring apparatus, 10 ... Imaging part (stereo camera # 1, # 2), 11 ... Image processing part, 12 ... Communication processing part, 20 ... Control part (management server), 21 ... Communication processing part, 22 ... Object monitoring unit, 23 ... display unit (display screen), 30 ... display unit, 40 ... IP network

Claims (5)

An entry / exit monitoring device that monitors entry / exit of an object in a specific section,
One-side imaging unit that is installed at one entrance of the specific section and shoots the state of entry and exit of the object in order to count the number of entrances and exits of the object in the specific section;
The other side imaging unit that is installed at the other entrance of the specific section and photographs the entrance / exit state of the object in order to count the number of entrances and exits of the object into the specific section,
A control unit for controlling whether or not to display alert information based on the number of entrances and exits of the one side entrance and the other side entrance; and
A display unit for displaying the alert information based on the control of the control unit;
The controller is
When the sum of the number of entrances of the object at the one entrance and the other entrance is larger than the sum of the exit numbers of the object at the one entrance and the other entrance, the alert information is displayed on the display unit. Let
When the sum of the number of entrances of the object at the one doorway and the other doorway is equal to the sum of the number of exits of the object at the one doorway and the other doorway, the alert information on the display unit is not displayed. An entrance / exit monitoring device characterized by being displayed. The controller is
2. The entrance / exit monitoring device according to claim 1, wherein an alarm is output when the sum of the number of entrances is greater than the sum of the number of exits for a predetermined time or more. The controller is
Even though the entrance of the object is detected from the one side entrance and the other side entrance, the exit of the object is not detected from the one side entrance and the other side entrance for a predetermined time or more. 3. An entrance / exit monitoring device according to claim 1 or 2, wherein an alarm is output. The controller is
If the entry of the object is detected from the one-side entrance and the other side entrance, even though the entrance of the object is not detected from the one-side entrance and the other side entrance, an alarm is generated. 3. The entrance / exit monitoring device according to claim 1, wherein the entrance / exit monitoring device outputs the information.   The entrance / exit monitoring device according to claim 1, wherein the object is a pedestrian.

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