JP2009093558A - Access management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an access management system surely managing access of an object by videos. <P>SOLUTION: A plurality of RFID readers 4 are arranged in order from an entrance 5 of a living room 1, entry time X of an employee 2 is estimated from the position and reading time of the RFID reader 4 which first reads out a signal from an RFID tag 3 carried by the employee 2, a portion of image data for a fixed time beginning with the entry time X is copied from video data obtained by a monitor camera 6, the copied portion is recorded in a storage apparatus 9 as a database in association with the identification information of the RFID tag 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an entrance / exit management system for recording and managing a moving object such as a person or an article entering or leaving a specific area, and more particularly, an RFID tag attached to a moving object is a plurality of RFID readers. This is related to an entrance / exit management system that reliably performs entrance / exit management based on time-series reading and video captured by an imaging device.

  Conventionally, by recording video data taken with surveillance cameras of objects such as people and articles entering and leaving specific areas such as living rooms and warehouses, and playing back the video data after a trouble has occurred There are known entry / exit management systems for examining related persons and articles. However, this entry / exit management system has a problem in that it requires a great deal of labor to find out and reproduce the part related to the point in time when the trouble occurred from the recorded video data, and to identify the photographed object. there were.

  In order to solve such a problem, Japanese Patent Application Laid-Open No. H10-228667 holds an IC tag in which unique information is recorded in an object, and a monitoring camera starts from the time when a reader provided at the entrance receives a signal from the IC tag. A shooting information entry / exit management system is proposed in which shooting is performed for a fixed time and the shooting data is associated with specific information, shooting time, and the like and registered in a database.

However, in this photographing information entrance / exit management system, depending on the relative positional relationship (direction and distance) between the IC tag and the reading device, the recognition rate of the IC tag by the reading device may greatly decrease, or the movement of the target object If the speed is very high, the timing of shooting will be lost, so there is a problem that the entrance / exit management of the object cannot be performed reliably.
JP 2006-174200 A

  An object of the present invention is to provide an entrance / exit management system capable of reliably managing the movement history of a moving object by video.

  An entrance / exit management system of the present invention that achieves the above object is an entrance / exit management system that records and manages a movement history of an object entering and exiting a specific area, wherein the identification information of the object is recorded. The RFID tag attached to the object, a plurality of RFID readers arranged in order from the entrance of the area, a photographing device for photographing the periphery where the RFID reader is disposed, and the photographing device A storage device that records video data; and a plurality of RFID readers, a photographing device, and a processing device connected to the storage device via a communication line, and identification information of the RFID tags read by the plurality of RFID readers And video data photographed by the photographing device are associated with each other in time series and recorded in the storage device.

  Based on the distance from the entrance of the RFID tag that first read the identification information of the RFID tag and the reading time among the plurality of RFID readers, the time when the target object enters is estimated, and the time of entry in the video data It is desirable to copy a portion of a certain period of time and associate it with identification information.

  In addition, it is desirable to delete the video data captured by the imaging apparatus after a predetermined period has elapsed. It is desirable that the plurality of RFID readers be arranged at equal intervals, and the arrangement interval between adjacent RFID readers should be two to three times the communicable distance of the RFID tag.

  It is desirable to use a plurality of surveillance cameras arranged so that a part of the field of view overlaps each other or a high-accuracy camera having one million pixels or more as the imaging device. Furthermore, it is desirable to use the Internet for the communication line.

  According to the entrance / exit management system of the present invention, a plurality of RFID readers recognize an RFID tag in which identification information of an object is recorded, and the object is detected based on the recognized RFID reader position and recognition time. Since the captured video data is recorded in association with the identification information, even when the recognition rate of the RFID tag is low or the moving speed of the target is very high, the video data relating to the entry of the target is recorded. Therefore, entry / exit management can be performed reliably.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows an example of an entrance / exit management system according to an embodiment of the present invention.

  This entrance / exit management system performs entrance / exit management of employee 2 who enters room 1 of the building. RFID (Radio Frequency IDentification) tag 3 possessed by employee 2 and the signal from RFID tag 3 are received. Mainly from a plurality of RFID readers 4 to be received, a plurality of monitoring cameras 6 in view of the entrance 5 of the living room 1, and a processing device 8 and a storage device 9 connected to these RFID readers 4 and the monitoring cameras 6 via a communication line 7 Configured.

  As shown in FIG. 2, the RFID tag 3 relates to identification information from the ID storage unit 10 in which identification information of the employee 2 is recorded, and the ID storage unit 10 according to a signal wirelessly transmitted from the RFID reader 4 described later. A transmission / reception unit 12 that selects a signal and wirelessly transmits the signal to the RFID reader 4 through the antenna 11 is provided. The employee 2 possesses the RFID tag 3 as a part of an employee ID or a room permit, for example. The identification information recorded in the ID storage unit 10 is exemplified by an employee number. The type of the RFID tag 3 is not particularly limited. However, from the point that the communication distance is long and the communication performance and communication quality are excellent, the microwave band of 2.45 GHz or the UHF band of 950 to 956 MHz is used as the frequency. It is preferable to use a passive RFID tag as a band.

  As shown in FIG. 3, the RFID reader 4 includes a receiving unit 14 that receives a signal wirelessly transmitted from the RFID tag 3 through an antenna 13, a processing unit 15 that separates identification information from the signal received by the receiving unit 14, And an output unit 16 for outputting the identification information to the communication line 7. Each of these parts is operated by a power supply unit 17 built in the RFID reader 4. The RFID readers 4 are arranged in order from the entrance 5 of the living room 1 and a plurality of units (n units) are arranged. From the viewpoint of simplifying the arrangement work, it is desirable that the RFID readers 4 are arranged at equal intervals from the entrance 5. It is desirable that the interval between the RFID readers 4 adjacent to each other is 2 to 3 times the communicable distance of the RFID tag 3. If it is less than 2 times, there is a high possibility that a plurality of RFID readers 4 will simultaneously receive signals from the RFID tag 3, and if it exceeds 3 times, the RFID reader 4 may not be able to receive signals. The specific distance is 2 to 3 m when the RFID tag 3 uses the microwave band, and 10 to 15 m when the RFID tag 3 uses the UHF band.

  The surveillance camera 6 has a capability of acquiring digital video data (moving image data) of an object, and is arranged at a position where the entrance 5 and its surroundings can be accommodated in the field of view. . Therefore, when a general-purpose camera having about 300,000 pixels is used, it is desirable to install a plurality of cameras so that parts of the field of view overlap each other. In addition, when using a high-precision camera with one million pixels or more, it is possible to take a wider field of view at the same resolution than a general-purpose camera, and thus the number of surveillance cameras 6 can be reduced. FIG. 1 illustrates a case where three general-purpose cameras are installed.

  As shown in FIG. 4, the processing device 8 includes an input / output unit 18 that inputs and outputs information to the communication line 7, an information processing unit 19 that performs arithmetic processing, a time management unit 20 that determines the current time, and the like. A storage unit 21 in which employee data corresponding to information is recorded in advance is provided. Each of these parts is driven by a power supply unit 22 to which power is supplied from the outside. Examples of employee data include name and affiliation. Such a processing apparatus 8 can be constituted by, for example, a normal personal computer or a workstation.

  The storage device 9 temporarily records video data captured by the monitoring camera 6 and records / stores information processing results in the processing device 8 in the form of a database. The storage device 9 can be constituted by a dedicated server provided with a large-capacity hard disk, for example. A plurality of recording devices 9 may be provided.

  By using the Internet for the communication line 7 that connects the RFID reader 4, the monitoring camera 6, the processing device 8, and the storage device 9, the processing device 8 and the storage device 9 can be installed far away.

  The function of the information processing unit 19 of the processing device 8 in such an entrance / exit management system will be described below with reference to FIG.

  First, the monitoring cameras 6A to 6C are activated to start photographing the entrance 5 of the living room 1 (S10), and the photographed video data is temporarily recorded in the storage device 9 through the communication line 7 (S11).

  Next, the moving average speed V and adjustment time C of the employee 2 are set by external input (S12, S13). The moving average speed V means an average speed when the employee 1 enters the room. Usually, the moving speed V is set to about 4 km / h because the employee 1 moves on foot. The adjustment time C is to correct the error of the moving average speed V.

Next, it is confirmed which number RFID reader 4 counting from the entrance 5 first reads the identification information from the signal from the RFID tag 3 (S14, S15), and the distance L from the entrance 5 of the RFID reader 4 is confirmed. Is acquired from the storage unit 21 (S16), and the reading time is acquired from the time management unit 20 (S17). By substituting those values into the following equation (1), the time X when the employee 2 entered the room is estimated (S18).
X = T- (L / V + C) ----- (1)

  Next, a portion of a fixed time is copied from the video data temporarily recorded in the storage device 9 with the entry time X as the starting point (S19), and is associated with the identification information transmitted from the RFID reader 4 (S20). The employee data corresponding to the identification information is acquired from the storage unit 21 (S21) and stored in the database of the storage device 9 together with other data (S22).

  FIG. 6 shows an example of the structure of the database. In this example, employee data including name and affiliation is associated with an employee number that is identification information, and an estimated entry / exit time X is also recorded. Moreover, although video data is recorded for every monitoring camera 6, only video data of a specific monitoring camera 6 may be recorded.

  Then, after a predetermined period has elapsed, the portion of the video data temporarily recorded in the storage device 9 up to the current time T is erased (S23).

  As described above, since the identification information of the RFID tag 3 is read by the plurality of RFID readers 4, even when the identification rate of the RFID tag 3 by the RFID reader 4 installed around the entrance 5 is greatly reduced, Since the identification information of the tag 3 can be reliably read and the entry time is estimated from the position of the RFID tag and the reading time, for example, even when the employee enters quickly Since the video at the time of entry can be acquired, entry / exit management can be performed reliably. In addition, the video taken by the surveillance camera is temporarily recorded, only the necessary parts are copied and recorded, and other unnecessary parts are erased, so it can accommodate multiple objects. Therefore, the performance of the entrance / exit management system can be improved, and the storage device can be downsized to reduce the installation cost of the entrance / exit management system.

  In the present embodiment, the entrance / exit management of employees to the room is taken as an example, but the store clerk to a specific section in the store such as a group of game machines (commonly known as “shima”) in the pachinko hall This can also be applied to the management of and management of the damage and loss of luggage carried in and out of the warehouse.

It is an example of the entrance / exit management system which consists of embodiment of this invention. It is an example of a structure of an RFID tag. It is an example of a structure of an RFID reader. It is an example of a structure of a processing apparatus. It is a flowchart which shows operation | movement of the information processing part of a processing apparatus. It is an example of the structure of a database.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Living room 2 Employee 3 RFID tag 4 RFID reader 5 Entrance 6 Surveillance camera 7 Communication line 8 Processing device 9 Storage device 10 ID storage unit 11 Antenna (of RFID tag) 12 Transmission / reception unit 13 Antenna (of RFID reader) 14 Reception unit 15 Processing Unit 16 output unit 17 power supply unit 18 (of RFID reader) input / output unit 19 information processing unit 20 time management unit 21 storage unit 22 power supply unit (of processing device)

Claims (8)

An entry / exit management system that records and manages the movement history of objects entering or leaving a specific area,
An RFID tag attached to the object, in which identification information of the object is recorded, a plurality of RFID readers arranged in order from the entrance of the area, and an imaging device for photographing the periphery where the RFID reader is arranged A storage device that records video data captured by the imaging device, and a processing device connected to the plurality of RFID readers, the imaging device, and the storage device via a communication line,
An entrance / exit management system that records identification information of the RFID tags read by the plurality of RFID readers and video data captured by the imaging device in time series in the storage device.   Based on the distance from the entrance of the RFID tag that first read the identification information of the RFID tag among the plurality of RFID readers and the reading time, the time when the object entered is estimated, and the video data The entrance / exit management system according to claim 1, wherein a portion of a certain time from the entrance time is copied and associated with the identification information.   The entrance / exit management system according to claim 2, wherein the video data photographed by the photographing device is erased after a predetermined period has elapsed.   The entrance / exit management system according to claim 1, wherein the plurality of RFID readers are arranged at equal intervals.   The entrance / exit management system according to claim 4, wherein an arrangement interval of the RFID readers adjacent to each other is set to be two to three times a communicable distance of the RFID tag.   The entrance / exit management system according to any one of claims 1 to 5, wherein the photographing device includes a plurality of surveillance cameras arranged so that a part of the field of view overlaps each other.   The entrance / exit management system according to any one of claims 1 to 5, wherein the photographing apparatus is a high-precision camera having one million pixels or more.   The entrance / exit management system according to claim 1, wherein the communication line is the Internet.

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