JP5223126B2 - Mobile object detection system and admission management system - Google Patents

Description

  The present invention relates to a mobile body detection system and an entrance management system, and more particularly to a mobile body detection system and an entrance management system that can detect a suspicious person.

For example, Japanese Patent Laid-Open No. 2006-99381 (Patent Document 1) discloses a so-called co-payment prevention method in a conventional entrance management system. According to this publication, whether or not the number of ID tags held by a person entering the gate using an ID (Identification) tag and a camera matches the number of persons obtained by analyzing an image taken by the camera. If there is a discrepancy, the gate is not opened and closed and an alarm is activated.
JP 2006-99381 A (paragraph number 0027, etc.)

  In the conventional entrance management system, the accompanying prevention is performed as described above. Since it only determines whether or not the number of tags matches the number from image analysis, unauthorized entry can be prohibited, but it is necessary to count the number of tags and the number by image analysis separately. There was a problem that became complicated.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a moving body detection system and an entrance management system that can easily identify a person having an ID tag and a person having no ID tag. .

According to the present invention, a mobile body detection system for determining whether a mobile body existing in a predetermined area has an ID tag or a mobile body includes a time measuring means, a photographing means for photographing a predetermined area, and a photographing means. An image determination unit that determines whether or not a moving object is present in a predetermined area based on the captured image, and an ID tag detection unit that detects whether or not a moving object having an ID tag is present in the predetermined area A timing detection unit that obtains from the time measuring unit the time when the image determination unit determines that the moving body is present, and the time when the ID tag detection unit detects that the mobile body having the ID tag is present, and the timing detection unit includes: Determination means for determining whether or not the mobile object existing in the region has an ID tag based on the detected determination time of the image determination means and the detection time detected by the ID tag detection means.

  Preferably, the predetermined area is provided with a trigger signal transmitting means for transmitting a trigger signal for specifying each area and an ID receiving means for receiving an ID from an ID tag in response to the trigger signal. The means detects whether or not the mobile object having the ID tag is present in a predetermined area based on the reception result of the ID receiving means.

  More preferably, the display unit includes a display unit, and the display unit includes a movement having the ID tag in the first display form when a moving object detected by the ID tag detection unit exists in the area according to the determination result of the determination unit. When the mobile body detected by the ID tag detection means does not exist in the predetermined area, the mobile body having no ID tag is displayed in a second display mode different from the first.

  A plurality of regions may be provided.

  In another aspect of the present invention, an admission management system that has a timing unit and manages whether or not a moving body that passes through a gate has an ID tag that outputs a predetermined ID is provided at an entrance of the gate. An image determination unit that determines whether or not a moving body exists in the area based on an image captured by the imaging unit, and a moving body that has an ID tag in the area. An ID tag detection unit that detects whether or not the image is present, and a time at which the image determination unit determines that a moving body is present and a time at which the ID tag detection unit detects that a mobile body having an ID tag is present Based on the timing detection means obtained from the means, the determination time of the image determination means detected by the timing detection means, and the detection time detected by the ID tag detection means, the mobile object existing in the region has an ID tag. And a determination means for determining whether or not to have.

  Preferably, the area is provided with a trigger signal transmitting means for transmitting a trigger signal for specifying the area and an ID receiving means for receiving an ID from an ID tag in response to the trigger signal. A moving body having an ID tag is detected based on the reception result of the receiving means.

  More preferably, the region includes a plurality of small regions provided in the width direction of the gate, and the small region is provided with a trigger signal transmitting means for transmitting a trigger signal for specifying each small region.

  Whether or not the mobile unit has an ID tag that outputs a predetermined ID based on the ID that allows passage through the gate stored in the storage unit, including a storage unit that stores an ID that allows passage through the gate. May be judged.

  Further, the alarm means may be included and the alarm means may be activated when the determination means determines that the mobile body does not have the predetermined ID tag.

  In one embodiment of the present invention, the display unit includes a display unit, and the display unit displays the first display when the mobile body detected by the ID tag detection unit is present in the area according to the determination result of the determination unit. A mobile body having an ID tag is displayed in a form, and if there is no mobile body detected by the ID tag detection means in a predetermined area, a mobile body having no ID tag is displayed in a second display form different from the first. To do.

  The small region may be divided into a plurality of regions in the traveling direction to the gate, and the trigger signal transmitting means may be provided for each of the plurality of regions provided in the traveling direction to the gate.

  According to the present invention, a predetermined area is imaged, and based on the captured image, it is determined whether or not a moving object is present, and a moving object having an ID tag in the area is detected. Based on the detected timing of each ID tag, it is determined whether or not the mobile body has an ID tag.

  As a result, it is possible to provide a moving body detection system and an entrance management system that can identify whether or not the moving body has an ID tag with a simple configuration.

  First, the principle of the present invention will be described. FIG. 1 is a diagram for explaining the principle of a moving object detection system according to the present invention. FIG. 1A is a perspective view showing a main part of a moving body detection system provided in a predetermined range for determining whether or not a person has an ID tag, and FIG. FIG. 1A is a plan view of a portion indicated by an arrow IB-IB in FIG. 1A, and FIG. 1C is a view showing only a trigger region in FIG. FIG. 1D is a diagram showing a display screen of a display (display unit shown in FIG. 2) connected to the management computer shown in FIG.

  Referring to FIG. 1, a predetermined monitoring range 10 is divided into three monitoring areas 11a, 11b, and 11c. Each of these three monitoring areas 11a to 11c is provided with a trigger antenna that transmits a trigger signal for specifying each area. Here, the trigger antenna which transmits a trigger signal shall be provided in the rectangular outer periphery shown by each area | region 11a to 11c. Therefore, when a mobile body (person or thing) having an ID tag enters each of the areas 11a to 11c, the respective ID numbers are output in response to the trigger signal of that area. The output ID number is received by a receiver (not shown) and input to the receiving unit shown in FIG. Here, the time when the ID tag enters or exits each area 11a to 11c is recorded together with the ID tag information.

  On the other hand, a camera (photographing means) 13 having a predetermined photographing range is provided above the three regions 11a to 11c. Here, the imaging region of the camera 13 sufficiently covers the three regions 11a to 11c as indicated by a dotted line 12 in the figure. An image photographed by the camera 13 is processed by an image processing unit which will be described later, and the presence or absence of a moving object is determined. When it is determined that a moving object exists, the moving object is displayed together with information indicating the photographing area. The shooting time when entering or leaving the monitoring area is recorded.

  That is, in this system, based on whether or not the timing information obtained by photographing the moving body by the camera and the timing information by which the moving body by the ID tag is detected, the moving body having an ID tag in a predetermined monitoring range, And it is determined whether there exists a moving body which does not have.

  Next, a control unit that controls the moving body detection system will be described. FIG. 2 is a block diagram showing the configuration of the control unit. Referring to FIG. 2, the control unit 100 sends a trigger signal to a CPU (Central Processing Unit) 101 that controls the entire system, a database (storage means) 102 that stores IDs of ID tags, and the like, and the trigger antenna described above. Trigger signal transmission unit (trigger transmission unit) 103 for transmission, reception unit 104 (reception unit) for receiving ID received by the reception antenna, and image for analyzing the image taken by the camera 13 and specifying the position of the visitor An analysis unit 105, a display unit (display unit) 106 for displaying images and the like, an image storage unit 107 for storing images taken by the camera 13, and a time measuring unit (time measuring unit) 108 for knowing the detection time of the moving object. And including. The timer 108 is an arbitrary device that can detect the time.

  The database 102 stores data for specifying the mobile object having the ID when the mobile object having the ID tag enters the monitoring area described above.

  Next, with reference to FIG. 1 and FIG. 2, operation | movement of the control part 100 of a moving body detection system is demonstrated. 3 to 5 are flowcharts showing the operation of the control unit 100. FIG. 3 is a main flowchart, and FIGS. 4 and 5 are sub-flowcharts showing the processing contents shown in FIG.

  First, referring to FIG. 3, it is determined whether or not there is a moving body in the monitoring areas 11 a to 11 c based on images taken by the camera 13 (step S <b> 11, hereinafter, steps are omitted). Next, it is judged whether an ID tag exists using a trigger signal (S12). Next, it is determined whether there is an undetermined moving body that has entered the monitoring areas 11a to 11c (S13). If there is an undetermined moving object that has entered the monitoring areas 11a to 11c (YES in S13), it is determined whether or not there is an ID tag at the same position. Based on the presence / absence of the ID tag, it is determined whether the registrant having the ID tag (S15) or the suspicious person having no ID tag (S16) is output, and the ID tag and the moving object are determined (S17). Therefore, the CPU 101 operates as an ID tag detection unit, a timing detection unit, and a determination unit.

  Next, a moving object detection method by the camera shown in S11 of FIG. 3 will be described with reference to FIG. FIG. 4 is a flowchart for explaining the operation of the control unit in this case. Referring to FIG. 4, first, an image photographed by camera 13 is acquired (S111). The image analysis unit 105 performs a moving object detection process in the image analysis unit 105 based on the acquired image (S112). In the moving object detection process, a moving object in the image is extracted, and a moving object ID is given to the newly detected moving object. When the moving body is detected and the moving body enters or leaves the monitoring areas 11a to 11c, the moving body ID is output to the CPU 101 together with the area ID that specifies the monitoring area. When receiving this data, the CPU 101 receives time data from the time measuring unit 108 and stores it in a storage unit (not shown) together with a flag indicating whether the moving body has entered or exited the monitoring area. When a moving object is detected by the moving object detection process (YES in S113), it is determined whether or not the moving object has entered the monitoring area in the previous process (S114). If there is a person in the previous process (YES in S114), the process is terminated as it is (S119).

  If no moving object is detected in S113 (NO in S113), the process is terminated. If the moving object is not in the monitoring area in the previous process in S114 (NO in S114), it is determined whether or not the moving object is in the monitoring area (S117). When it is determined that the moving object is in the monitoring area (YES in S117), information indicating that the moving object has newly entered the monitoring area is output to the CPU 101, and the process is terminated (S118, S119). If the moving object is not in the monitoring area in S117 (NO in S117), the process is terminated (S119). If it is determined in S115 that the moving object is not in the monitoring area (NO in S115), a signal indicating that the moving object has left the monitoring area is output to the CPU 101, and the process is terminated (S116, S119). Therefore, the CPU 101 operates as an image determination unit.

  Next, a moving object detection method using the trigger signal shown in S12 of FIG. 3 will be described with reference to FIG. FIG. 5 is a flowchart for explaining the operation of the control unit in this case. Referring to FIG. 5, first, ID tag reception data is acquired from receiving section 104 (S121). It is determined whether or not the acquired ID tag is a registered ID tag stored in the database 102 (S122). If it is a registered ID tag (YES in S122), the ID tag received data is output to the CPU 101 and the process is terminated (S123, S124). If the ID tag has not been registered in S122 (NO in S122), a signal to that effect is output to the CPU 101, and the process ends (S119).

  The receiving unit 104 continuously receives a signal from the ID tag 40 while the ID tag stays in the trigger area that specifies the monitoring areas 11a to 11c. When reception starts, the reception unit 104 determines that the ID tag 40 has entered the trigger area, and when reception stops, the reception unit 104 determines that the ID tag 40 has exited from the trigger area. The signal from the ID tag 40 includes the tag number of the ID tag 40 and the trigger ID of the staying trigger area. The receiving unit 104 adds a time and a flag indicating whether to enter or leave the monitoring (trigger) area to the received tag number and trigger ID, and outputs the result to the CPU 101.

  FIG. 1D is a diagram illustrating an example in which the detection result of the moving object by the above processing is displayed on the display unit 106. As shown in FIG. 1 (D), for each of the areas 11a to 11c, a moving object existing in the area can be detected by the camera and the ID tag at a certain timing. A person with an existing ID tag can be displayed with a circle, and a person without an ID tag can be displayed with a square different from the circle. If there is a person who does not have an ID tag, a warning to that effect may be displayed and a warning may be issued with a buzzer or the like (alarm means).

  As described above, according to the present invention, whether or not the moving object existing in the monitoring area has the ID tag based on the timing of entering or leaving the monitoring area by the camera and the ID tag in response to the trigger signal. It can be easily determined.

  In the above embodiment, the case where three small regions are used as the monitoring region has been described. However, the present invention is not limited to this, and the number of monitoring regions may be one, not limited to three, and may be arbitrary. A number of monitoring areas may be provided.

  Next, specific embodiments will be described. Here, the case where the above-described moving body detection system is applied to an entrance management system for an entrance door (gate) of an apartment house such as an apartment will be described. FIG. 6 is a plan view showing the vicinity of the entrance gate to which the entrance management system is applied. Referring to FIG. 6, a passage 20 is provided outside the entrance door 21, and a monitoring region 30 is provided so as to cover the entire width of the passage 20 near the door 21. In this figure, the camera provided on the ceiling is not shown.

  In this embodiment, the monitoring area 30 is an area corresponding to 11a to 11c in FIG. 1 and is divided into three small areas A to C in the width direction of the passage 20, and each divided in the width direction. The small areas A to C are further divided into two small areas 1 and 2 from the outside to the door 10 side. That is, the monitoring area 30 is divided into six small areas A1, A2, B1, B2, C1, and C2, which are composed of areas including A1, B1, and C1 and areas including A2, B2, and C2. A camera (not shown) captures the entire monitoring area 30, analyzes the image, and detects the entrance and exit of a person for each small area, as described with reference to FIG.

  On the other hand, trigger antennas 31a to 33b for outputting the trigger signals described above are provided in the respective small areas A1 to C2. The ID tag outputs its own ID number and the like in response to the trigger signal. The output ID number and the like are received by the receiving antenna 22 provided on the side of the passage 20 and transmitted to the monitoring panel 60 having the management computer 100 shown in FIG. The receiving antenna 22 and the monitoring panel 60 are not limited to the illustrated positions, and may be provided at arbitrary positions. Further, the signal received by the receiving antenna 22, image data taken by the camera, or the like may be transmitted wirelessly to the monitoring panel or may be transmitted by wire.

  And the person who is detected by detecting the timing of the person's entry and exit for each small area obtained from the image taken by the camera and the person's entry and exit for each small area obtained from the ID tag, It is determined whether or not the person has a registered ID tag. If the person is a registered person, the control unit 100 outputs a signal for opening and closing the door, and if the person does not have an ID tag, the door is not opened and closed. . An alarm may be issued.

  As a result, it is possible to provide an entrance management system in which only a person having a registered ID tag can enter.

  The width of the passage in the width direction is preferably slightly larger than the shoulder width of a person. The trigger antennas 31a to 33b provided in the small trigger areas A1 to C2 respectively output different trigger signals. On the other hand, since the ID tag that has received the trigger signal outputs its own ID number and the ID number (trigger ID) included in the received trigger signal, if the signal from the ID tag is received and analyzed, the ID tag It is possible to detect in which small trigger region A1 to C2 a person who has

  As described above, in this embodiment, since a person who does not have an ID tag among a plurality of visitors is specified and displayed together with a warning, a suspicious person can be easily identified.

  Next, the ID tag 40 used here will be described. FIG. 7 is a block diagram showing the configuration of the ID tag 40. Referring to FIG. 5, ID tag 40 includes a receiving antenna 51, a trigger signal detecting unit 41, a battery 49, a switch 42, and an ID number generating unit 43 that generates an ID number as a unique number. The ID number generation unit 43 includes an address counting unit 45, an ID number storage unit 46, an oscillator 47, an output circuit 48, a transmitting antenna 44 that outputs an ID number, a memory 52, and a microcomputer 50 that controls the whole. The

  The reception antenna 51 is configured to receive a trigger signal from the trigger signal transmission unit 103, and the trigger signal detection unit 41 recognizes that the signal received by the reception antenna 51 is a trigger signal. The switch 42 is turned on. When the switch 42 is turned on, power is supplied to the ID number generator 43, and the ID number corresponding to the ID tag 40 is output from the ID number generator 43 via the transmission antenna 44. The ID number thus output is converted into a high frequency signal by the oscillator 47 and transmitted from the transmitting antenna 44 via the output circuit 48.

  Here, an ID number is continuously transmitted from the oscillator 47 provided in the ID tag 40 in synchronization with the received trigger signal in a unique pattern, and the receiving unit 104 receives this ID number. In addition, it transmits including the trigger ID contained in the received trigger signal.

  In the above embodiment, the example in which the monitoring area of the passage leading to the door is divided into three in the width direction of the door and divided into two in the direction toward the door has been described. It does not have to be.

  In the above-described embodiment, the case where the entrance of a person is managed has been described. However, the present invention is not limited to this, and an ID tag may be provided on an arbitrary object and the object may be transported to a predetermined position. It may be determined.

  Moreover, although the example which provided one camera which image | photographs a visitor on the ceiling was demonstrated, you may provide not only this but a several camera.

  Moreover, you may provide the camera for confirming a visitor's face separately.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

It is a figure for demonstrating the principle of this invention. It is a block diagram which shows the structure of the control part of a moving body detection system. It is a flowchart which shows operation | movement of the control part of a moving body detection system. It is a flowchart which shows operation | movement of the control part of a moving body detection system. It is a flowchart which shows operation | movement of the control part of an ID tag judgment system. It is a top view which shows the principal part at the time of applying an ID tag judgment system to an admission management system. It is a block diagram which shows the structure of an ID tag.

Explanation of symbols

10 monitoring range, 11 area, 12 shooting area, 13 camera, 14 ceiling, 20 passage, 21 door, 22 receiving antenna, 30 trigger area, 31a-33b trigger antenna, 100 control unit, 101 database, 102 trigger signal transmitting unit, 104 reception unit, 105 image analysis unit, 106 display unit, 107 image storage unit.

Claims (9)

A mobile object detection system for determining whether a mobile object existing in a predetermined area has an ID tag or is a mobile object,
Timekeeping means,
Photographing means for photographing the predetermined area;
Image determining means for determining whether or not a moving object is present in the predetermined area based on an image photographed by the photographing means;
ID tag detecting means for detecting whether or not there is a moving body having an ID tag in the predetermined area;
Timing detecting means for obtaining from the time measuring means the time when the image determining means determines that a moving object is present, and the time when the ID tag detecting means detects that a moving object having an ID tag is present;
Based on whether or not the determination time of the image determination unit detected by the timing detection unit and the detection time detected by the ID tag detection unit are the same time, the moving object present in the predetermined region is identified as an ID. Judging means for judging whether or not it has a tag,
The predetermined area is provided with a trigger signal transmitting means for transmitting a trigger signal for specifying the predetermined area, and an ID receiving means for receiving an ID from the ID tag in response to the trigger signal,
The said ID tag detection means is a moving body detection system which detects whether the moving body which has an ID tag exists in the said predetermined area | region based on the reception result of the said ID receiving means . A display means,
The display means displays the mobile body having the ID tag in the first display form when the mobile body detected by the ID tag detection means exists in the area according to the determination result of the determination means. The mobile body that does not have the ID tag is displayed in a second display form different from the first display form when there is no mobile body detected by the ID tag detection means in the predetermined area. Mobile object detection system. The region is divided into a plurality of small areas, mobile detection system according to claim 1 or 2. An admission management system for managing whether or not a moving body that has a time measuring means and has an ID tag that outputs a predetermined ID,
A region provided at the entrance of the gate;
Photographing means for photographing the region;
Image determining means for determining whether or not a moving object is present in the region based on an image photographed by the photographing means;
ID tag detection means for detecting whether or not there is a mobile object having an ID tag in the area;
Timing detecting means for obtaining from the time measuring means the time when the image determining means determines that a moving object is present, and the time when the ID tag detecting means detects that a moving object having an ID tag is present;
Based on whether or not the determination time of the image determination unit and the detection time detected by the ID tag detection unit detected by the timing detection unit are the same time, the mobile object existing in the region has an ID tag. Judging means for judging whether or not it has,
The area is provided with a trigger signal transmitting means for transmitting a trigger signal for specifying the area, and an ID receiving means for receiving an ID from the ID tag in response to the trigger signal,
The said ID tag detection means is an admission management system which detects the mobile body which has an ID tag based on the reception result of the said ID receiving means . The region includes a plurality of regions provided in the width direction of the gate, the small areas, the trigger signal transmitter for transmitting a trigger signal for specifying each said small region is provided, according to claim 4 Admission management system. Storing means for storing an ID permitting passage of the gate;
The entrance according to claim 4 or 5 , wherein the determination means determines whether or not the mobile body has an ID tag that outputs a predetermined ID based on an ID that allows passage through a gate stored in the storage means. Management system. The admission management system according to any one of claims 4 to 6 , further comprising an alarm unit, wherein the alarm unit is activated when the determination unit determines that the mobile body does not have a predetermined ID tag. Including display means,
The display means displays the mobile body having the ID tag in the first display form when the mobile body detected by the ID tag detection means exists in the area according to the determination result of the determination means. , when the mobile body the ID tag detection means to the predetermined area is detected there is no display of the mobile without the ID tag in the first and different second display mode, from the claims 4 to 7 The admission management system described in any one. The small region is divided into a plurality of regions in the traveling direction to the gate,
The admission management system according to any one of claims 4 to 8 , wherein the trigger signal transmission means is provided for each of a plurality of areas provided in a traveling direction toward the gate.

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