JP2014118791A - Entering/leaving management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an entering/leaving management system for measuring staying time of all users who hold normal ID tags in a section, preventing erroneous reception of a radio signal from an ID tag outside the section and more accurately measuring the staying time.SOLUTION: An entering/leaving management system comprises: receiving means 4 which is provided in a section, and receives a radio signal transmitted from an information recording medium existing within a reception range in a predetermined reception period; authentication means 6 which performs authentication based on identification information on the radio signal received by the receiving means; time measurement means 7 which measures, for the identification information authenticated by the authentication means, staying time of the information recording medium with the identification information in the section by integrating time received by the receiving means; and a metal mesh 8 which is provided along an outer edge of the section at least at a part where the reception range of the receiving means exceeds the outer edge of the section to the outside, and blocks the radio signal.

Description

  The present invention relates to an entrance / exit management system.

  Some conventional entrance / exit management systems use an IC card. In a general entry / exit management system using an IC card, an IC card reader is installed at the entrance / exit of a section in a facility where entrance / exit restrictions are imposed, and a user who wants to pass through this entrance / exit, Authentication is performed by causing the card reader to read the identification information recorded on the IC card possessed by itself. If the authentication is successful, the door of the doorway is unlocked and the user is allowed to pass.

  Here, if authentication with an IC card is requested not only when entering the section but also when leaving, the IC card of the identification information is obtained from the authentication time when entering the room and the authentication time when leaving the room for certain identification information. It is possible to measure the residence time of the owner of the person in the relevant section.

  However, in the method of measuring the stay time using such an IC card and a card reader, when the entrance / exit door is opened due to the successful authentication of the user who possesses a certain IC card, other users are authenticated. There is a problem of so-called “joint” that allows people to enter and leave the room together without going through. When companionship occurs, the user's stay time in the section cannot be measured accurately.

  In addition, instead of using an IC card and a card reader, an attempt is made to measure the staying time of a user in an area using an ID tag (active RFID tag) and an antenna capable of transmitting and receiving authentication information by wireless communication. It is difficult to match the reception range of the antenna and the shape of the section, and the antenna receives the signal from the ID tag outside the section, so that the staying time of the user in the section can be accurately measured. It may not be possible.

  In the technical field of mobile terminals using wireless communication, PHS terminals are distinguished from other mobile phone terminals without adding special functions to the mobile terminals and without adversely affecting other devices. For the purpose of detection, an electromagnetic shielding area is placed immediately before a predetermined area, and the portable terminal is guided out of the range of the regular base station by guiding the portable terminal into the electromagnetic shielding area. What establishes communication between a station and a portable terminal is conventionally known (see, for example, Patent Document 1).

JP 2002-058071 A

  However, the prior art disclosed in Patent Document 1 is related to the PHS terminal detection device as described above, and is intended to distinguish and detect the PHS terminal from other mobile phone terminals, and includes an ID tag and an antenna. When the staying time in the section is measured using the (receiving device), it is not considered at all, and cannot be immediately applied to the entrance / exit management system.

  In addition, in the conventional entrance / exit management device that measures the staying time in the section, as described above, when a companion occurs or an erroneous reception of a radio signal from an ID tag outside the section occurs. There is a problem that it is impossible to accurately measure the staying time of the user in the section.

  The present invention has been made to solve such a problem, and it is possible to measure the staying time in the compartment of all the users who possess the regular ID tag, and the ID outside the compartment. An entrance / exit management system capable of preventing erroneous reception of a radio signal from a tag and measuring the staying time more accurately is obtained.

  In the entrance / exit management system according to the present invention, an information recording medium that is possessed by a user and transmits a radio signal including pre-recorded identification information, and the information record that is provided in a section and exists within a reception range A receiving means for receiving a radio signal transmitted from a medium at a predetermined reception cycle; an authenticating means for performing authentication based on identification information included in the radio signal received by the receiving means; and the authenticating means. For the authenticated identification information, by integrating the time received by the receiving means, the time measuring means for measuring the stay time in the section of the information recording medium of the identification information, and at least the reception of the receiving means A metal mesh provided along the outer edge of the section at a location where the range extends outward from the outer edge of the section, and shielding the radio signal. Entry control system according to claim.

  In the entrance / exit management system according to the present invention, it is possible to measure the staying time in the section of all users possessing regular ID tags, and the error of the radio signal from the ID tag outside the section. It is possible to prevent reception and to measure the stay time more accurately.

It is a typical top view of one section in a building provided with the entrance / exit management system concerning Embodiment 1 of this invention. It is a typical top view of one section in a building provided with the entrance / exit management system concerning Embodiment 2 of this invention. It is a typical top view of one section in a building provided with the entrance / exit management system concerning Embodiment 3 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIG. 1 relates to Embodiment 1 of the present invention, and is a schematic plan view of a section in a building provided with an entrance / exit management system.

  In FIG. 1, reference numeral 1 denotes a section partitioned inside a facility or a building. A door 2 is provided at the entrance / exit 1a of the section 1 so as to be freely opened and closed. A user who goes in and out of the section 1 has an ID tag 3. The ID tag 3 is a so-called active RFID (Radio Frequency IDentification) tag. Therefore, the ID tag 3 has a built-in battery that supplies power for transmitting a radio signal from the ID tag 3.

  Identification information that can uniquely identify each of a plurality of users is recorded in the ID tag 3 in advance. A first receiving device 4 is installed at a predetermined position in the section 1. The first receiving device 4 is for reading the identification information recorded on the ID tag 3 by wireless communication.

  The wireless signal transmitted from the ID tag 3 includes identification information recorded on the ID tag 3 itself. The first receiving device 4 processes an antenna unit for receiving a radio signal (electromagnetic wave) transmitted from the ID tag 3 and a radio signal received by the antenna unit to obtain identification information included in the radio signal. It includes a signal processor to acquire.

  A range in which the wireless signal transmitted from the ID tag 3 by the first receiving device 4 can be received is the first receiving range 5. When the ID tag 3 carried by the user enters the first reception range, the ID tag 3 transmits a radio signal including identification information recorded on the ID tag 3 itself to the first receiving device 4. To do. The first receiving device 4 receives the radio signal transmitted from the ID tag 3 and acquires identification information from the received radio signal. Therefore, the identification information of the ID tag 3 is acquired by the first receiving device 4 simply by entering the first reception range 5 while the user has the ID tag 3.

  The ID tag 3 is an example of an information recording medium possessed by a user, in which identification information is recorded, and the identification information is read by wireless communication. As such an information recording medium, in addition to the active RFID tag mentioned here, a so-called standby communication system (a system in which a radio signal is transmitted from the tag only when the tag is within the tag detection range) is so-called. By using a semi-active RFID tag, consumption of the battery built in the ID tag 3 can be suppressed.

  The identification information of the ID tag 3 received by the first receiving device 4 is input to the authentication device 6. In the authentication device 6, identification information of a user who is permitted to stay in the section 1 is stored in advance as authentication information. The authentication device 6 collates the identification information from the first receiving device 4 (that is, the identification information read from the ID tag 3 by the first receiving device 4) with the authentication information stored in the authentication device 6. Thus, it is authenticated whether or not the user of the identification information is a person who is permitted to stay in the section 1.

  As a result of the authentication, if the verification between the identification information and the authentication information fails, the authentication fails, and the user of the identification information is a person who is not permitted to stay in the section 1. . Therefore, when authentication by the authentication device 6 fails, a notification device (not shown) notifies the user in the section 1 to leave or permits staying at the facility or building monitoring center. Notification that a person who is not performed is in the section 1 is performed.

  On the other hand, when the verification of the identification information and the authentication information is successful, the authentication is successful. When the authentication by the authentication device 6 is successful, the time measuring device 7 measures the stay time of the identification information that has been successfully authenticated in the user's section 1.

  The stay time is measured by the time measuring device 7 as follows. The identification information successfully authenticated by the authentication device 6 is sent to the time measuring device 7. For each piece of identification information sent from the authentication device 6, the time measuring device 7 integrates the reception duration time of the radio signal including the identification information by the first receiving device 4.

  Here, when the ID tag 3 enters the first reception range 5, the radio signal including the identification information stored in the ID tag 3 is transmitted to the first receiving device 4 at predetermined time intervals. Send. The first receiving device 4 receives the radio signal transmitted from the ID tag 3 in the first receiving range 5 at a predetermined reception period. Therefore, if the state where the ID tag 3 is within the first reception range 5 continues, the identification information of the ID tag 3 is sent to the time measuring device 7 for each reception period.

  Therefore, when the time measuring device 7 is repeatedly sent from the authentication device 6 for the same identification information for each reception cycle, the user who has the ID tag 3 of the identification information continues to partition. It can be determined that the user is staying within the first reception range 5 within 1. Therefore, the time measuring device 7 adds up the duration of the same identification information from the start of transmission from the authentication device 6 until it is not transmitted from the authentication device 6, thereby allowing the user of the identification information to Measure dwell time.

  Here, the first receiving range 5 is a substantially spherical space region centered on the antenna portion of the first receiving device 4, and when viewed in plan, it becomes a substantially circular region as shown in FIG. . On the other hand, the shape of the section 1 is not necessarily substantially circular in a plan view, and may be, for example, a rectangular shape as shown in FIG.

  For this reason, the first reception range 5 and the section 1 do not necessarily coincide with each other, and the region where the user wants to detect the ID tag 3, that is, the user wants to measure the staying time of the user who owns the ID tag 3 is the first region. When it is attempted to efficiently cover the reception range 5, there is a possibility that the first reception range 5 protrudes outside the section 1.

  If the first reception range 5 protrudes outside the section 1, the ID tag 3 possessed by the user outside the section 1 may enter the first reception range 5. In such a case, the time measuring device 7 mistakenly assumes that the user outside the section 1 is inside the section 1, and the staying time is measured.

  In order to prevent such a situation, a metal mesh 8 is provided inside the wall of the section 1 that forms the outer edge of the section 1. The size of the metal mesh 8 is set so that the electromagnetic wave used for wireless communication between the ID tag 3 and the first receiving device 4 can be sufficiently shielded in consideration of the wavelength of the electromagnetic wave. The The metal mesh 8 is provided at least at a location where the first reception range 5 extends outside the outer edge of the section 1 whose stay time is to be measured.

  Here, the metal mesh 8 is embedded in the wall of the section 1 excluding the entrance / exit 1a portion, but the entrance / exit 1a portion may be provided with a metal mesh inside the door 2. The metal mesh 8 constitutes shielding means for shielding a radio signal transmitted from the ID tag 3 to the first receiving device 4.

  The entrance / exit management system configured as described above is provided in the section with an ID tag 3 that is an information recording medium that is possessed by a user and transmits a radio signal including identification information recorded in advance, and within a reception range. The first receiving device 4 which is a receiving means for receiving a radio signal transmitted from an information recording medium existing in the receiver at a predetermined reception cycle, and the identification information included in the radio signal received by the receiving means Based on the authentication device 6 that performs authentication based on the authentication information 6 and the identification information authenticated by the authentication means, the time received by the receiving means is integrated to obtain the stay time of the identification information in the section of the information recording medium. A time measuring device 7 that is a time measuring means for measuring the signal, and at least a place where the receiving range of the receiving means exceeds the outer edge of the section along the outer edge of the section, A metal mesh 8 蔽, and a.

  For this reason, it is possible to measure the stay time of all users who have a regular ID tag in the section, and to prevent erroneous reception of radio signals from ID tags outside the section. Therefore, it is possible to measure the stay time more accurately.

Embodiment 2. FIG.
FIG. 2 relates to Embodiment 2 of the present invention and is a schematic plan view of a section in a building provided with an entrance / exit management system.

  In the second embodiment described here, a plurality of receiving apparatuses having different reception ranges are provided in the configuration of the first embodiment described above. Then, the stay time is measured separately for each receiving device that has received the signal from the ID tag, or the stay time weighted according to which receiving device has received the signal from the ID tag. is there.

  That is, as shown in FIG. 2, two receiving devices, a first receiving device 4 and a second receiving device 9, are installed in the section 1. A range in which a radio signal transmitted from the ID tag 3 by the first receiving device 4 can be received is a first receiving range 5. In addition, a range in which the wireless signal transmitted from the ID tag 3 by the second receiving device 9 can be received is the second receiving range 10.

  The first receiving device 4 and the first receiving range 5 are the same as those in the first embodiment. The basic configuration of the second receiving device 9 is the same as that of the first receiving device 4. However, the second reception range 10 is set to be different from the first reception range 5. Specifically, here, the second reception range 10 is set to be an area narrower than the first reception range 5.

  The authentication device 6 authenticates each of the identification information of the ID tag 3 received by the first receiving device 4 and the identification information of the ID tag 3 received by the second receiving device 9. When the authentication is successful, the authentication device 6 obtains the identification information that has been successfully authenticated and information about the reception devices (the first reception device 4 and the second reception device 9) that have received the identification information. This is sent to the time measuring device 7.

  Based on the identification information sent from the authentication device 6 and information on the receiving device, the time measuring device 7 distinguishes each piece of identification information for each receiving device that has received the identification information, and receives the identification information. The total duration.

  As described above, since the first reception range 5 and the second reception range 10 are set differently, the ID tag 3 is identified by either the first reception range 5 or the second reception range 10. It can be said that the information indicating whether or not the information is received is information regarding the position of the user who owns the ID tag 3 in the section 1.

  Therefore, the time measuring device 7 distinguishes each receiving device that has received the identification information, and accumulates the duration of the reception of the identification information, so that information indicating how long and where in the section 1 has stayed. Can be obtained. Specifically, for example, in the example illustrated in FIG. 2, the second reception range 10 is set to be narrower than the first reception range 5 and included in the first reception range 5. For this reason, the time measuring device 7 can measure the staying time for each distance from a specific point in the section 1 such as the center point of the second reception range 10.

  More specifically, when the ID tag 3 is close to the center point of the second reception range 10 and the ID tag 3 is in the second reception range 10, the identification information of the ID tag 3 is the first reception It is received by both the device 4 and the second receiving device 9. On the other hand, when the ID tag 3 is far from the center point of the second reception range 10 and the ID tag 3 is in the first reception range 5 but not in the second reception range 10, the ID The identification information of the tag 3 is received only by the first receiving device 4. Therefore, in the time measuring device 7, it is confirmed whether the same identification information is received by both the first receiving device 4 and the second receiving device 9 or only by the first receiving device 4. Thus, the position of the ID tag 3 of the identification information can be obtained.

  Further, in the time measuring device 7, for each receiving device, the staying time measured for each receiving device that has received the identification information, that is, for each position in the section 1 or for each distance from a specific point in the section 1, in advance. It is also possible to integrate after weighting according to a predetermined weighting factor.

  For example, in a nuclear facility, the air dose is higher as the distance from the nuclear equipment is closer, and the air dose is lower as the distance from the nuclear equipment is farther. Setting the corresponding weighting factor is useful because the weighted stay time integrated by the time measuring device 7 is proportional to the integrated value of the air dose.

  In addition, in the example of the nuclear facilities mentioned above, the distance from the nuclear equipment can be obtained by measuring the staying time with respect to the position in the section 1 by the time measuring device 7 without performing such weighted integration. It is possible to measure the stay time at a position close to and the stay time at a position far away from the nuclear facility separately, so that it remains useful.

  Other configurations are the same as those in the first embodiment. That is, for example, in the example of FIG. 2, a part of the first reception range 5 is on the outer edge of the section 1, but by providing the metal mesh 8, the ID tag 3 outside the section 1 and the first reception Wireless communication with the device 4 is blocked.

  In the above, two receiving devices, the first receiving device 4 and the second receiving device 9, are installed in the section 1, and the first receiving range 5 and the second receiving range 10 are different from each other. Although the reception range is set, the number of reception devices and reception ranges is not limited to two, and may be two or more. By increasing the number of receiving apparatuses and receiving ranges to be provided, it is possible to set the receiving range more finely and to determine the position more accurately.

  The entrance / exit management system configured as described above is provided with a plurality of receiving apparatuses (first receiving apparatus 4 and second receiving apparatus 9) in the configuration of the first embodiment so that the receiving ranges are different from each other. The time measuring device 7 as time measuring means adds up the times received for each of the plurality of receiving devices with respect to the identification information authenticated by the authenticating means (authentication device 6).

  For this reason, in addition to having the same effect as in the first embodiment, the staying time can be measured for each position of the ID tag 3 in the section 1.

Embodiment 3 FIG.
FIG. 3 relates to Embodiment 3 of the present invention and is a schematic plan view of a section in a building provided with an entrance / exit management system.

  In the second embodiment described above, in order to set a plurality of different receiving ranges, the same number of receiving apparatuses as the receiving ranges are installed in the section. On the other hand, the third embodiment described here uses a receiving apparatus having a variable receiving range, so that a plurality of different receiving ranges can be set with a small number of receiving apparatuses.

  That is, as shown in FIG. 3, the third receiving device 11 is installed in the section 1. The third receiving device 11 can change the reception range in which the radio signal transmitted from the ID tag 3 can be received. Here, as the variable reception range of the third reception device 11, two examples of the third reception range 12 and the fourth reception range 13 are illustrated.

  The third receiving device 11 alternately changes the receiving range between the third receiving range 12 and the fourth receiving range 13 at regular intervals. Here, the fourth reception range 13 is narrower than the third reception range 12 and is included in the third reception range 12.

  When receiving the wireless signal transmitted from the ID tag 3, the third receiving device 11 acquires identification information included in the received wireless signal. And the information regarding the receiving range of the 3rd receiver 11 at the time of receiving the radio signal containing the said identification information is transmitted to the authentication apparatus 6 with the acquired identification information. Here, since there are two types of reception ranges of the third reception device 11, the third reception range 12 and the fourth reception range 13, the reception range transmitted from the third reception device 11 to the authentication device 6. The content of the information regarding is either the third reception range 12 or the fourth reception range 13.

  The authentication device 6 authenticates the identification information transmitted from the third receiving device 11. When the authentication is successful, the authentication device 6 recognizes the identification information that has been successfully authenticated, and the reception range of the third reception device 11 at the time of receiving the identification information is the third reception range 12 and the fourth reception. Information indicating which of the ranges 13 is present is sent to the time measuring device 7.

  Based on the identification information and reception range information sent from the authentication device 6, the time measurement device 7 distinguishes each identification information for each reception range from which the identification information has been received, and the identification information is received. The total duration.

  When the ID tag 3 is in the fourth reception range 13, the identification information of the ID tag 3 includes the third reception range 12 when the reception range of the third reception device 11 is the fourth reception range. Received at both times. On the other hand, when the ID tag 3 is in the third receiving range 12 but not in the fourth receiving range 13, the identification information of the ID tag 3 is the receiving range of the third receiving device 11. It is received when it is in the third reception range 12, but is not received when it is in the fourth reception range 13.

  Therefore, in the time measurement device 7, whether the reception range of the third reception device 11 is received for both the third reception range 12 and the fourth reception range 13 for the same identification information, or For the same identification information, the third receiving device 11 is received when the receiving range is the third receiving range 12 but is not received when the fourth receiving range 13 is received. The position of the information ID tag 3 can be obtained.

  Here, the case where there are two reception ranges of the third reception range 12 and the fourth reception range 13 as the reception ranges that can be switched by the third reception device 11 has been described as an example. The number of reception ranges that can be switched by the receiving device 11 is not limited to two, and may be two or more (plural). By increasing the number of reception ranges that can be switched by the third reception device 11, the reception range can be set more finely and the position can be determined more accurately.

  Thus, installation is necessary by using the third receiving device 11 that has a variable receiving range as the receiving device and can switch the receiving range to one selected from a plurality of different receiving ranges. As in the second embodiment, the staying time can be measured for each position of the ID tag 3 in the section 1 while suppressing the number of receivers.

  1 section, 1a doorway, 2 doors, 3 ID tag, 4 first receiving device, 5 first receiving range, 6 authentication device, 7 time measuring device, 8 metal mesh, 9 second receiving device, 10 second Reception range, 11 third reception device, 12 third reception range, 13 fourth reception range.

Claims (5)

An information recording medium that is carried by the user and transmits a radio signal including identification information recorded in advance;
Receiving means for receiving a radio signal transmitted from the information recording medium provided in the section and existing in the reception range at a predetermined reception cycle;
Authentication means for performing authentication based on identification information included in the wireless signal received by the receiving means;
For the identification information authenticated by the authentication means, the time measuring means for measuring the stay time in the section of the information recording medium of the identification information by accumulating the time received by the receiving means;
A metal mesh that is provided along the outer edge of the section at a location where the receiving range of the receiving means extends beyond the outer edge of the section, and shields the radio signal. Exit management system. A plurality of the receiving means are provided such that the receiving ranges are different from each other,
The entrance / exit management system according to claim 1, wherein the time measuring unit accumulates the times received for each of the plurality of receiving units for the identification information authenticated by the authenticating unit. The receiving means can switch the receiving range to one selected from a plurality of different receiving ranges,
2. The input according to claim 1, wherein the time measurement unit distinguishes the identification information authenticated by the authentication unit for each of the plurality of reception ranges, and accumulates the times received by the reception unit. Exit management system.   The entrance / exit management system according to claim 2, wherein the time measuring unit weights each of the plurality of receiving units and accumulates the received times.   The entrance / exit management system according to claim 3, wherein the time measuring unit weights each of the plurality of reception ranges, and accumulates the times received by the receiving unit.

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