JP2008299584A - Traffic line management system and traffic line monitoring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traffic line management system which detects change in a traffic line of a mobile object and discloses a cause of the traffic line change. <P>SOLUTION: An IC tag mounted on the mobile object, tag readers 30 to 39 for receiving information from the IC tag, a traffic line processor 100 for accumulating information received from the tag readers to process it, and cameras 20, 21 for photographing images are communicatively connected. The tag reader receives IC tag identification information (S501), and transmits, to the traffic line processor 100, the IC tag identification information and location identification information (S502). The traffic line processor 100, on the basis of the location identification information, obtains a traffic line, determines whether or not the traffic line is the same as previously stored movement (S504), extracts presence/absence of change in information of images photographed by the cameras 20, 21 if determined that the traffic line shows movement different from the previously stored movement (S506), and if the change is present, notifies a manager as such (S507). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technology related to a flow line management system and a flow line monitoring device that detect a change in a flow line of a moving body and disclose the cause of the flow line change.

As a conventional technique, a technique for detecting a human flow line is disclosed. For example, Patent Document 1 discloses an invention for analyzing a moving image acquired by a photographing unit and obtaining a human flow line as a technique for detecting a human flow line.
JP 2000-200377 A

  However, in the analysis using moving images, a large amount of data must be handled, and complicated processing such as using a technique related to image recognition to identify the same person is required.

Moreover, in the prior art, there is hardly disclosed a technique for clarifying the cause in association with the change in the flow line.
For example, a layout change can be considered as one of the causes of the flow line change. In this case, it is possible to clarify the cause of the change in the human flow line by analyzing the change in the human flow line and the change in the layout in association with each other.
Taking the production site as an example, the process layout may be changed frequently. Along with that, the flow of people changes. At that time, if the cause of the time loss (loss) in the human flow line can be detected, the production site manager can be made aware of the cause of the time loss.

  In view of the above-described problems of the prior art, the present invention provides a flow line management system that detects a change in the flow line of a moving body (person or object) by a simple process and discloses the cause of the flow line change. There is to do.

  In order to solve the above problems, in a flow line management system, an IC tag mounted on a moving body, a tag reader that receives information from the IC tag, and a flow line processing device that accumulates and processes information received from the tag reader And a camera that captures an image so that they can communicate with each other, and the information acquired from the IC tag and the tag reader is processed by a flow line processing device to detect a change in the flow line, and the image captured by the camera Is used to extract the changed part and identify the cause of the flow line change.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to detect the change of the flow line of a moving body and to disclose the cause of the flow line change.

  Next, the best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described in detail with reference to the drawings as appropriate.

(Embodiment)
The configuration of the flow line management system 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing a configuration of the flow line management system 1.
The flow line management system 1 is configured so that the IC tags 70, 71,... And the tag readers 30, 31,... Can communicate with each other via radio, and the cameras 20, 21, and the tag readers 30, 31,. The flow line processing apparatus 100 is connected via the network 200 and is configured to be communicable.

The IC tags 70, 71,... Are realized by non-contact wireless ID tags such as RFID (Radio Frequency IDentification). The IC tags 70, 71,... Are attached to a moving body (for example, a person), and IC tag identification information (IC tag identification information) is stored so that the moving body can be identified.
The IC tags 70, 71,... Include a passive tag that does not have a battery and obtains power from received radio waves, and a battery-mounted active tag that transmits information by itself. The passive tag is used for information transmission at a short distance of 1 m or less from the tag reader. On the other hand, the active tag is used for information transmission at a long distance of several meters or more with the tag reader. In the embodiment of the present invention, a case where an active tag is used will be described.

The tag readers 30, 31... Receive radio waves transmitted from the IC tags 70, 71... By the antennas, and IC tag identification information (information for identifying IC tags) stored in the IC tags 70, 71. Can be obtained. The tag readers 30, 31... Transmit the received IC tag identification information and the detected position information (position identification information) to the flow line processing device 100.
As a method of obtaining the position information of the IC tags 70, 71,..., The tag readers 30, 31,... Have directivity so as to limit the range in which radio waves from the IC tags 70, 71,. , The passage of the IC tags 70, 71... Can be detected. Therefore, the position identification information may be information for identifying the tag readers 30, 31,.
The information (tag reader identification information) for identifying the tag readers 30, 31,... Is a position where the IC tag 70 is detected by referring to a table in which the tag reader identification information and the installation position are associated in the flow line processing device 100. Identified as

  The cameras 20, 21,... Take images (still images or photographs) and transmit the image information to the flow line processing apparatus 100 together with camera identification information for identifying the captured cameras.

  The flow line processing device 100 acquires IC tag identification information and camera identification information from the tag readers 30, 31,... And the cameras 20, 21, respectively, and associates the acquired information with the reception time to store the storage unit 120. And whether or not there is a change in the flow line is determined. Then, the cause of the change in the flow line is extracted by analyzing the image information from the cameras 20, 21,.

Next, the hardware configuration and function of the flow line processing apparatus 100 will be described with reference to FIG. FIG. 2 is a diagram illustrating a hardware configuration and functions of the flow line processing apparatus 100.
As shown in FIG. 2, the flow line processing apparatus 100 is configured such that a processing unit 110, a storage unit 120, an input / output unit 130, and a communication control unit 140 are connected via a bus and can communicate with each other.

  The processing unit 110 includes a CPU (Central Processing Unit) 111 that executes arithmetic processing, and a main memory 112 that is a storage unit that the CPU 111 uses for arithmetic processing. The main memory 112 is realized by a RAM (Random Access Memory) or the like. And the application program stored in the memory | storage part 120 is expand | deployed by RAM, CPU111 implement | achieves various processes by executing it.

  The storage unit 120 stores various data and calculation results used by the CPU 111 for calculation processing, or data transmitted and received by the input / output unit 130. The storage unit 120 is realized by a ROM (Read Only Memory), a hard disk device, or the like (not shown).

  The input / output unit 130 includes an input device such as a keyboard and a mouse connected to the flow line processing device 100, and various data such as the result of arithmetic processing performed by the processing unit 110 is configured by a display device such as a display. Is done.

  The communication control unit 140 includes a communication interface (not shown), transmits information processed by the processing unit 110 to another device via the network 200 (see FIG. 1), and receives information from the other device. Control to receive.

  Next, a configuration for acquiring information of the IC tag 70 by the tag reader 30 will be described with reference to FIG. FIG. 3 is a diagram showing a configuration for acquiring information of the IC tag 70 by the tag reader 30.

In the embodiment of the present invention, for example, as shown in FIG. 3, the tag reader 30 can sense a radio wave transmitted from the IC tag 70 that has entered a conical range (a range with dots). The tag reader 30 that has sensed the radio wave from the IC tag 70 transmits the position identification information and the IC tag identification information to the flow line processing device 100.
If the tag reader 30 has a wide directivity and overlaps with the detection range of another tag reader 31, a determination process is performed to select position identification information with a higher radio wave reception intensity from the IC tag 70. It is necessary to provide the line processing apparatus 100. In this case, the tag readers 30 and 31 need to transmit information related to the reception intensity of radio waves to the flow line processing apparatus 100 as well.

  Next, an example of function expansion will be described with reference to FIGS. 4 and 5 when the flow line management system 1 is installed at a production site. FIG. 4 is a diagram illustrating a case where the flow line management system 1 detects a normal flow line 50a. FIG. 5 is a diagram illustrating a case where the flow line management system 1 detects an abnormal flow line 50b.

FIG. 4 shows a production site where work spaces for performing work by cell lines (job shops) are arranged in an orderly manner. It is assumed that a process is set in which an article assembled in the work space 12 is transported to the work space 13 on the right and commercialized.
Therefore, the movement of the worker A working in the work space 12 to return the assembled article to the work space 13 is stored in the storage unit 120 in advance.

The tag readers 30 to 39 are installed at important points so that the passage through which the IC tag 70 passes can be detected.
For example, it is assumed that the worker A wearing the IC tag 70 enters from the entrance and the radio waves from the IC tag 70 are sequentially detected by the tag readers 36a, 36b, 30, 32. If it is assumed that the IC tag 70 has not been detected by any of the tag readers 30 to 39 for a while, it is clear that the worker A is somewhere in the area surrounded by the tag readers 32, 38, and 34. Therefore, it is estimated that the user has reached the work space 12 that is his / her place. Next, assuming that the assembled article is carried from the work space 12 to the work space 13 (flow line 50a), the tag reader 38 detects the radio wave from the IC tag 70. When returning to the work space 12 again, the tag reader 38 detects the radio wave from the IC tag 70. Since the tag reader 38 detects the radio wave from the IC tag 70 twice in succession and the worker A does not pass through the tag readers 32, 33, 34, and 35, he goes back to the work space 12 and returns. It is judged that
In this way, by arranging the tag readers 30 to 39 at important points, the movement of the IC tag 70 can be almost understood.

On the other hand, the cameras 20 and 21 for taking a photo have a resolution that can be used to take a photo with a resolution that can be understood as to what kind of change (change) has occurred in the layout or the like for a specific area or the entire landscape. The Shooting shall be performed at a fixed point at a fixed time. If the camera is installed on a pan head having a swing function, it is possible to photograph different places with one camera.
The tag readers 30 to 39 and the cameras 20 and 21 installed at important points are connected to the flow line processing apparatus 100 via the network 200.

  In the storage unit 120 of the flow line processing apparatus 100, the movement of the worker A is stored in advance. By comparing with the stored movement, it is detected that the worker A is moving without being stored. Such unstored movement is considered to lead to time loss. And if the cause of the movement that is not memorized is clarified, it is possible to eliminate time loss.

  Note that the movement of the worker A stored in the storage unit 120 in advance can be determined by the manager based on the work plan. Alternatively, the flow line information of the worker A is collected in advance, and statistical processing for one day, one week, or one month is performed. It does not matter as a movement. Further, all the flow lines from the morning may be stored in the storage unit 120, and the movement of the worker A stored in advance may be used.

  Next, a case where the worker A detects a movement different from the flow line shown in FIG. 4 (flow line 50b) will be described with reference to FIG. 5 differs from FIG. 4 in that an obstacle 60 exists between the work space 12 and the work space 13. As an example of the obstacle 60, there is a case where the number of parts is increased and an article shelf or the like is provided due to a specification change or the like. Then, the obstacle 60 protrudes into the passage and it becomes difficult to move the article between the work spaces 12 and 13. In such a case, it is assumed that the IC tag 70 (worker A) is sequentially detected by the tag readers 32, 30, 36b, 31, 33 (flow line 50b).

  The flow line processing device 100 can determine that the movement line 50b is a movement that is not stored by comparing with the movement (flow line 50a) of the worker A that is stored in advance.

  Next, the operation of the flow line processing system 1 will be described with reference to FIG. 6 (see FIG. 5 as appropriate). FIG. 6 is a diagram showing an operation flow of the flow line processing system 1 in the embodiment of the present invention.

FIG. 6 shows a part of the flow of operation of the flow line processing system 1.
For example, the flow line 50b of FIG. 5 is shown as an example. Since the IC tag 70 is an active tag, it transmits information (IC tag identification information) by itself. Therefore, the tag readers 30 to 39 detect radio waves from the IC tag 70 and receive IC tag identification information (S501). Then, the position identification information and the IC tag identification information are transmitted from the tag readers 30 to 39 to the flow line processing device 100 (S502). When the flow line processing device 100 receives the position identification information and the IC tag identification information, the flow line processing device 100 associates the reception time with each other and stores them in the storage unit 120.

  Here, a table in which the position identification information, the IC tag identification information, and the reception time are stored in the storage unit 120 will be described with reference to FIG. FIG. 7 is a table in which position identification information, IC tag identification information, and reception time are associated with each other.

As illustrated in FIG. 7, the position identification information, the IC tag identification information received from the tag readers 30 to 39, and the reception time added by the flow line processing device 100 are stored in the storage unit 120 as a table.
As shown in the row of management number 1, the reception time is expressed as a series of numbers 20070531092035 on May 31, 2007, 09:20:35. In addition, the IC tag identification information and the position identification information are displayed with reference numerals attached for convenience. These may be other expressions such as a manufacturing serial number as long as they are identifiable codes.

  Returning to FIG. 6, the flow line processing device 100 refers to the movement stored in advance in the storage unit 120 and determines whether the movement is different from the previously stored movement (S504). As a specific determination method, it is determined that the movement is different when the order of the position identification information is different from the order stored in advance. Alternatively, even if the order of the position identification information is stored, it is determined that the movement is different even when the time spent is outside the allowable range. Of course, when it is determined that both movements are different, it may be determined that the movements are different.

  On the other hand, the cameras 20 and 21 take a picture when the fixed point is fixed, and transmit the photographed photograph information (image information) to the flow line processing apparatus 100 (S503, S505).

  Here, a table associated with camera identification information, photo information (file name), and reception time stored in the storage unit 120 will be described with reference to FIG. FIG. 8 is a table in which camera identification information, photo information (file name), and reception time are associated with each other.

As shown in FIG. 8, camera identification information and photo information (file name) received from the cameras 20 and 21 and the reception time added by the flow line processing device 100 are stored in the storage unit 120 as a table.
As shown in the row of management number 1, the reception time is expressed as a series of numbers 20070531080000 on May 31, 2007, 08:00:00. In addition, the camera identification information is displayed with reference numerals attached to the drawing for convenience. For convenience, the photograph information (file name) is displayed with a symbol A or B at the head and a combination of the reception date and time. These may be different expressions as long as they are identifiable codes.
Further, although the reception time is every 10 minutes in FIG. 8, it may be set every hour, every half day, every day, etc. as appropriate according to the change frequency of the layout.

Returning to FIG. 6, when it is determined that the motion line processing apparatus 100 is different from the motion stored in advance (Yes in S504), the flow line processing device 100 determines whether or not there is a change in the photographic information (image information) (S506).
Specifically, when it is determined that “the motion is different from the previously stored motion” (Yes in S504), the processing unit 110 compares the photograph information (image information) (S503, S505) received before and after that. Then, changes such as the obstacle 60 shown in FIG. 5 are extracted.

If it is determined that there is a change in the photographic information (image information) (Yes in S506), the manager of the production site is notified (S507). This notification may be displayed on a display unit (not shown) of the input / output unit 130 or a sound (alarm) may be output from a speaker (not shown).
In determining whether or not there is a change in the photo information, for example, when the data amount is larger than a predetermined amount, using the data amount of the changed part as a scale when comparing the photo information (after correlation removal) What is necessary is just to determine with a change.

  If it is determined that the movement is the same as that stored in advance (No in S504), S506 and S507 are not executed. If it is determined that there is no change in the photographic information (image information) (No in S506), S507 is not executed.

  As described above, in the embodiment of the present invention, it is possible to easily extract a change in the flow line by the IC tag 70, the tag readers 30 to 39, and the cameras 20 and 21. In addition, it is possible to easily extract the cause of the change in the flow line from the photographic information (image information) by the cameras 20 and 21. As a result, it becomes possible to be aware of a time loss caused by a change in the flow line, and it is possible to cope with it quickly.

(Modification 1)
Next, a flow line processing system for a case in which, when it is determined that the movement is different from the motion stored in advance by the processing unit 110, photography instruction information is transmitted to the cameras 20 and 21, and photography (image photography) is performed. 1 will be described with reference to FIG. FIG. 9 is a diagram showing a flow of operation of the flow line processing system 1 in the modification.
However, the same operations as those in FIG. 6 are denoted by the same reference numerals, and description thereof is omitted.

  In the first modification, the cameras 20 and 21 are assumed to have a function of taking a picture according to an instruction (shooting instruction information) from the flow line processing device 100.

When it is determined that the movement is different from the motion stored in advance by the processing unit 110 (Yes in S504), the flow line processing device 100 transmits the photography instruction information to the cameras 20 and 21 (S510). Then, the cameras 20 and 21 that have received the photo shooting instruction information take a photo and transmit the taken photo information (image information) to the flow line processing device 100 (S511).
Next, in S506, it is determined whether or not the photographic information (image information) has changed.

  The feature of Modification 1 is that when it is determined that the movement is different from the motion stored in advance (Yes in S504), it is possible to immediately acquire photo information (image information) and check whether there is a change. It is. This makes it possible to quickly extract the cause of the change in the flow line.

(Modification 2)
As a second modification of the embodiment of the present invention, a flow line monitoring device 100 ′ that monitors the flow line by installing tag detection means 30 ′ to 39 ′ instead of the tag readers 30 to 39 at the flow line monitoring point will be described. .

First, as shown in FIG. 10, the flow line monitoring apparatus 100 ′ includes tag detection means 30 ′ to 39 ′ installed at predetermined flow line monitoring points, and cameras 20 and 21 installed at predetermined imaging points. , Connected so that it can communicate. Note that the flow line monitoring device 100 ′ has the same configuration and function as the flow line processing device 100. Therefore, regarding the processing unit 110 ′, the storage unit 120 ′, the input / output unit 130 ′, and the communication control unit 140 ′, the processing unit 110, the storage unit 120, the input / output unit 130, and the communication control unit described above in the embodiment of the present invention. Since it has the same configuration and function as 140, detailed description is omitted.
When the tag detection means 30 ′ to 39 ′ detects the IC tag 70 attached to the moving object A ′ moving in the monitoring target area of the flow line, the tag detection information is transmitted to the flow line monitoring device 100 ′. In addition, the cameras 20 and 21 capture an image in the monitoring target area and transmit photographic information (image information) to the flow line monitoring device 100 ′.
Then, the flow line monitoring device 100 ′ is based on the tag detection information transmitted by the tag detection means 30 ′ to 39 ′ and the photographic information (image information) transmitted by the cameras 20, 21 along the movement path of the moving object A ′. Monitor certain traffic lines.

First, tag detection means 30'-39 'is demonstrated.
An example is shown in FIG. The infrared light emitter 300 is installed at a position (flow line monitoring point) where the passage of the moving object A ′ can be detected. When the infrared sensor 301 attached IC tag 70 ′ a to which the infrared sensor 301 is added detects the infrared ray emitted from the infrared emitter 300 by the infrared sensor 301, the infrared sensor IC tag 70 ′ a Tag identification information and position identification information are issued. Then, the tag reader 30′a receives the IC tag identification information and the position identification information.
Specifically, the infrared light emitted from the infrared light emitter 300 is a signal in which light emitter identification information unique to the infrared light emitter 300 is modulated. Therefore, when the infrared sensor 301 detects infrared rays, the light emitter identification information (position identification information) is read. The infrared sensor-attached IC tag 70'a emits light emitter identification information (position identification information) and IC tag identification information. Next, the light emitter identification information (position identification information) and the IC tag identification information are received by the tag reader 30′a and transmitted to the flow line monitoring device 100 ′. In the flow line monitoring device 100 ′, the position where the infrared sensor-attached IC tag 70′a is detected is specified by referring to a table in which the light emitter identification information is associated with the position of the flow line monitoring point.
That is, tag detection means 30 'is comprised with the combination of the infrared rays light emitter 300, the infrared sensor 301, and tag reader 30'a. The “tag detection information” described in the claims means “light emitter identification information and IC tag identification information”.
In this configuration, the infrared light emitter 300 may be installed at the flow line monitoring point, and the tag reader 30′a may be installed at a position where the radio wave from the IC tag with infrared sensor 70′a can be received.

Alternatively, as another example, as shown in FIG. 12, the tag detection unit 30 ′ includes a moving body detection sensor 302 that detects the presence of the moving body A ′ by detecting infrared rays emitted from the moving body A ′ and a tag reader 30 ′. The combination of b may be sufficient.
That is, the tag reader 30′b and the moving body detection sensor 302 are connected so as to be able to communicate with each other. When the moving body detection sensor 302 detects the moving body A ′, it transmits the sensing information to the tag reader 30′b. When the tag reader 30′b receives the sensing information, the tag reader 30′b accepts the tag detection information issued from the IC tag 70 and transmits it to the flow line monitoring device 100 ′.
In this configuration, “tag detection information” is “position identification information for identifying a tag reader and IC tag identification information”.

Next, the flow of operation of the flow line monitoring device 100 ′ will be described (see FIG. 10 as appropriate).
First, the movement line pattern of the moving body A ′ in the monitoring target area moves between the movement line monitoring points in accordance with the order of the position identification information and the movement line pattern stored in advance. Is stored in the storage unit 120 ′ as flow line pattern information indicated as a time interval required for.
When the tag detection means 30 ′ to 39 ′ detects the IC tag 70, the position detection information of the tag detection means 30 ′ to 39 ′ and the IC tag identification information unique to the detected IC tag 70 are detected as tags. Information is transmitted to the flow line monitoring device 100 ′.
Then, the processing unit 110 ′ (actual flow line information storage processing unit) of the flow line monitoring device 100 ′ associates the received position identification information, IC tag identification information, and detection time, and stores them as actual flow line information. Store in the unit 120 ′.

  On the other hand, photo information (image information) of images taken by the cameras 20 and 21 is transmitted to the flow line monitoring device 100 '. Then, the processing unit 110 ′ (image storage processing unit) of the flow line monitoring apparatus 100 ′ associates the photographic information (image information) with the photographing time and stores them in the storage unit 120 ′.

Next, the processing unit 110 ′ (flow line pattern determination processing unit) of the flow line monitoring apparatus 100 ′ compares the flow line pattern information and the actual flow line information stored in the storage unit 120 ′, so that the position identification order is It is determined whether or not a discrepancy in the flow line pattern corresponding to at least one of the mismatch and the time interval outside the allowable range has occurred.
Further, when the processing unit 110 ′ (image difference detection processing unit) of the flow line monitoring apparatus 100 ′ determines that the flow line pattern is disturbed, the image (photograph information) stored in the storage unit 120 ′. Among these, the image (photograph information) at the time before and after the time when the disturbance occurs is compared to determine whether there is a difference.
Then, a change in the flow line in the monitoring target area is monitored.

  As shown in FIG. 13, when the tag detection means 30 ′ to 39 ′ are individually connected to the flow line monitoring device 100 ′ by wiring, the port number of the connected flow line monitoring device 100 ′ is set. It is possible to identify tag detection means 30'-39 'by 330-339. In this case, the position where the IC tag 70 is detected is specified by referring to a table in which the port numbers 330 to 339 that have received the tag detection information are associated with the position of the flow line monitoring point. For this reason, the tag detection means 30 ′ to 39 ′ need not transmit the position identification information.

  Further, when it is determined that the flow line pattern is disturbed, the processing unit 110 ′ transmits a signal for instructing the cameras 20 and 21 to take a photograph. Then, the processing unit 110 ′ (image difference detection processing unit) of the flow line monitoring device 100 ′ receives the image (photograph information) taken at the time nearest to the time when the disturbance occurred and is taken in response to the instruction. Whether or not there is a difference from the image (photograph information) is determined and displayed on the display device of the input / output unit 130 ′.

It is a figure which shows the structure of a flow line management system. It is a figure which shows the hardware constitutions and function of a flow line processing apparatus. It is a figure which shows the structure which acquires the information of an IC tag with a tag reader. It is a figure which shows the case where a flow line management system detects a normal flow line. It is a figure which shows the case where a flow line management system detects the unusual flow line. It is a figure which shows the flow of operation | movement of the flow line processing system in embodiment of this invention. It is the table which linked | related position identification information, IC tag identification information, and reception time. It is a table in which camera identification information, photo information (file name), and reception time are associated with each other. It is a figure which shows the flow of operation | movement of the flow line processing system in a modification. It is a figure which shows the structure of a flow line monitoring system. It is a figure which shows the structure of the tag detection means in a modification. It is a figure which shows the structure of the tag detection means in a modification. It is a figure which shows the structure of the port connection of the flow line monitoring apparatus and tag detection means in a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flow line management system 2 Flow line monitoring system 20,21 Camera 30-39 Tag reader 30'-39 'Tag detection means 30'a Tag reader 30'b Tag reader 70 IC tag 70'a IC tag with an infrared sensor 100 Flow line processing apparatus DESCRIPTION OF SYMBOLS 100 'Flow line monitoring apparatus 120 Memory | storage part 200 Network 300 Infrared light emitter 301 Infrared sensor 302 Mobile body detection sensor 330-339 Port number A Worker A' Mobile body

Claims (10)

A flow line management system in which an IC tag mounted on a mobile body, a tag reader that receives information from the IC tag, and a flow line processing device that accumulates and processes information received from the tag reader are connected so as to communicate with each other. In
The tag reader includes position identification information for identifying a position where the IC tag is detected, is arranged at a position where passage of the IC tag can be detected, and when the IC tag identification information is acquired from the IC tag, the IC tag Transmitting identification information and the position identification information to the flow line processing device;
The processing unit of the flow line processing device is:
The received IC tag identification information, the position identification information, and the reception time are associated with each other and stored in a storage unit,
When one or both of the position identification information stored in the storage unit and the reception time of the position identification information stored in the storage unit are different from a predetermined condition stored in advance, the flow line changes. Performing flow line change detection to determine that
A flow line management system characterized by A flow line management system in which an IC tag mounted on a mobile body, a tag reader that receives information from the IC tag, and a flow line processing device that accumulates and processes information received from the tag reader are connected so as to communicate with each other. In
The tag reader includes position identification information for identifying a position where the IC tag is detected, is arranged at a position where passage of the IC tag can be detected, and when the IC tag identification information is acquired from the IC tag, the IC tag Transmitting identification information and the position identification information to the flow line processing device;
The processing unit of the flow line processing device is:
The received IC tag identification information, the position identification information, and the reception time are associated with each other and stored in a storage unit,
When the order of the position identification information stored in the storage unit is different from the order stored in advance, and the reception time interval of the position identification information stored in the storage unit is within an allowable range of values stored in advance. Performing a flow line change detection that determines that there has been a change in the flow line when it is outside, either or both,
A flow line management system characterized by An IC tag mounted on a moving body, a tag reader that receives information from the IC tag, a flow line processing device that accumulates and processes information received from the tag reader, and a camera that captures an image can communicate with each other. In the connected flow line management system,
The tag reader includes position identification information for identifying a position where the IC tag is detected, is arranged at a position where passage of the IC tag can be detected, and when the IC tag identification information is acquired from the IC tag, the IC tag Transmitting identification information and the position identification information to the flow line processing device;
The camera includes camera identification information for identifying the camera, and transmits captured image information and the camera identification information to the flow line processing device.
The processing unit of the flow line processing device is:
The received IC tag identification information, the position identification information, and the reception time are associated with each other and stored in the storage unit, and the received image information, the camera identification information, and the reception time are associated with each other and stored in the storage unit,
When the order of the position identification information stored in the storage unit is different from the order stored in advance, and the reception time interval of the position identification information stored in the storage unit is within an allowable range of values stored in advance. One or both when outside,
Further, when it is determined that there is a difference between the image information before and after the reception time of the position identification information, a flow line change detection is performed to determine that the flow line has changed,
Outputting a notification when it is determined by the flow line change detection that there has been a change in the flow line;
A flow line management system characterized by The notification to be output is read out from the storage unit and displayed on the display unit image information before and after the reception time of the position identification information when it is determined that the flow line has changed,
The flow line management system according to claim 3. An IC tag mounted on a mobile body, tag detection means for receiving information from the IC tag, a flow line processing device for storing and processing information received from the tag reader, and a camera for taking an image are communicable In the flow line management system connected as follows,
The tag reader includes position identification information for identifying a position where the IC tag is detected, is arranged at a position where passage of the IC tag can be detected, and when the IC tag identification information is acquired from the IC tag, the IC tag Transmitting identification information and the position identification information to the flow line processing device;
The camera includes camera identification information for identifying the camera, and transmits the first image information captured at a predetermined time interval and the camera identification information to the flow line processing device,
The processing unit of the flow line processing device is:
The received IC tag identification information, the position identification information, and the reception time are associated with each other and stored in the storage unit, and the received first image information, the camera identification information, and the reception time are associated with each other in the storage unit. Remember,
When the order of the position identification information stored in the storage unit is different from the order stored in advance, and the reception time interval of the position identification information stored in the storage unit is within an allowable range of values stored in advance. When you are outside and either or both,
Send image shooting instruction information to the camera,
The camera transmits the second image information captured by the camera that has received the image capturing instruction information and the camera identification information to the flow line management system,
The processor is
When the second image information is received and it is determined that there is a difference between the first image information or the second image information that has been received most recently in the past from the reception time, Perform flow line change detection to determine that the line has changed,
Outputting a notification when it is determined by the flow line change detection that there has been a change in the flow line;
A flow line management system characterized by When detecting an IC tag attached to a moving body moving in the monitoring target area of the flow line, tag detection means for transmitting tag detection information is provided at a predetermined flow monitoring point, and an image in the monitoring target area is taken. Ready to send a camera to a predetermined shooting point,
A flow line monitoring device that monitors a flow line that is a movement path of the moving body based on tag detection information transmitted by the tag detection means and an image transmitted by the camera;
The movement line pattern of the moving body in the monitored area is the order of the position identification information of the tag detection means, and the moving body moves between the movement line monitoring points according to the movement line pattern. A storage unit registered as flow line pattern information indicated as a time interval required;
When the tag detection unit detects the IC tag, the storage unit associates the detection time, the position identification information of the detected tag detection unit, and the IC tag identification information unique to the detected IC tag as storage line information An actual traffic line information storage processing unit for storing
An image storage processing unit that stores an image captured by the camera in a storage unit in association with a shooting time;
The flow line pattern information stored in the storage unit is compared with the actual flow line information stored in the storage unit, the order of the position identification information does not match, and at least one of the time intervals is outside the allowable range. A flow line pattern determination processing unit that determines whether or not a disturbance of a flow line pattern corresponding to one has occurred,
When it is determined that disturbance of the flow line pattern has occurred, among the images stored in the storage unit, an image for determining whether there is a difference by comparing images at times before and after the time at which the disturbance has occurred A difference detection processing unit,
Monitoring changes in flow lines in the monitored area;
A flow line monitoring device characterized by this. The position identification information of the tag detection means is
Determined based on a port number to which the tag detection unit is connected, or included in tag detection information to be transmitted when the tag detection unit detects the IC tag,
The flow line monitoring apparatus according to claim 6. When it is determined that disturbance of the flow line pattern has occurred, an image is taken by the camera, and the determination by the image difference detection processing unit is performed.
The flow line monitoring apparatus according to claim 6. The flow line monitoring point includes a moving body detection sensor that detects the moving body,
The tag detection means transmits tag detection information about the IC tag detected when the mobile object detection sensor detects a mobile object;
The flow line monitoring apparatus according to claim 6. The tag detection means includes an infrared emitter and a tag reader,
The infrared light emitter is provided at the flow line monitoring point, and emits infrared light modulated with light emitter identification information for identifying the infrared light emitter,
The IC tag includes an infrared sensor, and when the infrared sensor reads the infrared light emitter identification information, the light emitter identification information and the IC tag identification information are transmitted.
The tag reader receives the light emitter identification information and the IC tag identification information,
The tag detection means transmits the received light emitter identification information and the IC tag identification information as the tag detection information,
Using the transmitted light emitter identification information as the position identification information;
The flow line monitoring apparatus according to claim 6.

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