JP4677875B2 - Entrance / exit management system - Google Patents

Description

  The present invention relates to an entrance / exit management system for managing the entrance of a person into a specific area requiring security, and more particularly to an entrance / exit management system for preventing unauthorized persons from entering when a door is opened.

Conventionally, an ID tag is carried by an employee for security management in a company. When entering or leaving each room, the ID tag is brought close to a card reader provided in the vicinity of the door, the ID is read from the ID tag, it is determined whether the person is an entry / exit permitted person, and door opening / closing control is performed. There are known entry / exit management devices for performing the above-mentioned. In this entrance / exit management device, since it is necessary to bring the ID tag close to the card reader, the reading operation becomes complicated especially when the ID tag cannot be brought close to the card reader. Therefore, there has been proposed a device that unlocks the door only by approaching the vicinity of the door without bringing the ID tag close to the card reader (Patent Document 1).
Japanese Patent Laid-Open No. 9-41744

  In the conventional example disclosed in Patent Document 1 described above, the ID tag only serves as a key. Therefore, when one person entering and leaving the room unlocks the door, the other entry that has not read the tag data. The person who left the room could also enter the room, and there was a problem that it was impossible to control who was in the room.

  Moreover, since the person who carried the ID tag in front of the door may pass and the ID may be authenticated and unlocked, there is a problem that an unauthorized person can easily enter the room. .

  An object of the present invention is to provide an entrance / exit management system with improved security reliability.

  In order to solve the above-described problems, an entrance / exit management system according to the present invention is an entrance / exit management system that manages entrance / exit persons by unlocking and locking doors installed at entrances and exits of rooms. The operation detection means for detecting the operation state of the entry / exit permitted person, the unique ID set in the ID tag, and the detection result of the action detection means are held by the entry / exit permission person who is permitted to enter / exit. An ID tag having a transmitting means for transmitting, and a communication range with the ID tag is set inside or outside the entrance and exit, and a unique ID transmitted from the ID tag and A tag reader that receives the detection result of the motion detection means, is on the same side as the side on which the communication range of the tag reader is set, and is installed inside and outside the entrance / exit, An entry detection sensor having an object detection range set in the vicinity of the entry / exit and detecting an object, and a transmission means for transmitting a detection result of the object detection means, the ID tag transmitted from the tag reader The unique ID of the ID tag, the detection result of the motion detection means, and the detection result of the detection means transmitted from the entry detection sensor are respectively received, and the unique ID of the ID tag is an ID permitted to enter the room, and the entry If the detection result of the detection sensor indicates that an object has been detected, and if the detection result of the motion detection means indicates that the operation of the entry / exit permitter has stopped, the door of the entrance / exit is unlocked. It is characterized by comprising entrance / exit management means.

  In the entry / exit management system according to the present invention, the ID tag is detected by the tag reader, the entry of the unique ID of the ID tag is permitted, the object is detected by the entry detection sensor, and the entry / exit of the person permitted to enter / exit by the motion detection means. Since the door of the entrance / exit is unlocked only when it is determined that the operation is stopped, it is prevented that the person carrying the ID tag passes the front of the door and the ID is authenticated and unlocked. be able to. Therefore, an entrance / exit management system with improved security reliability can be realized.

  Embodiments of an entrance / exit management system according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram illustrating a configuration of an entrance / exit management system according to the first embodiment. As shown in FIG. 1, an entrance / exit management system 1 of this embodiment includes an RFID (Radio Frequency Identification) tag (hereinafter referred to as an ID tag or tag) 2 held by an entrance / exit permitter, and an ID tag 2 The tag reader 3A is set outside the room entrance and exit, and the tag reader 3B opposite to the tag reader 3A is set as the communication range inside the room entrance and the range narrower than the communication range. An entry detection sensor 4A in which the outside in the vicinity of the entrance / exit is set as the detection range, an entry detection sensor 4B in which the inside in the vicinity of the entrance / exit is set as the detection range opposite to the entry detection sensor 4A, A passage detection sensor (passage detection means) 5 for detecting a person entering or leaving the room, and a door (not shown) installed at the entrance when the preset condition is met. And a entry and exit management server (entry control means) 6 for unlocking to entering and leaving management entering and leaving's a.

  The ID tag 2 is a device that wirelessly transmits an ID. As shown in FIG. 2A, the tag itself has a battery and an active tag 22 that independently transmits an ID to the tag reader 21, and FIG. As shown in FIG. 2, there is a battery-less passive tag 24 that receives electric waves from the passive tag reader 23 to generate electricity and transmits an ID. The ID tag has various shapes such as a label type, a card type, a coin type, and a stick type, and is selected according to the application.

  In this embodiment, a case where a UHF band passive tag is used as the ID tag 2 will be described as an example. The ID tag 2 receives a radio wave in the UHF band from the tag reader 3, generates power using the radio wave, and has a unique tag ID (hereinafter abbreviated as “ID” where appropriate) that each ID tag 2 has, A signal from the acceleration sensor (motion detection means) built in the tag reader 3 is transmitted to the tag reader 3.

  Next, the configuration of the ID tag 2 described above will be described with reference to FIG. As shown in FIG. 3, the power generation unit 31 accumulates the induced power generated in the antenna 32 by the induced electromagnetic field of the radio wave transmitted from the tag reader 3 and operates the tag with the accumulated power. Data such as a reader ID sent from the tag reader 3 is received by the antenna 32, a waveform is extracted by the receiving unit 33, and analog / digital conversion is performed by the signal converting unit 34. The control unit 35 extracts and holds the reader ID from the data received from the tag reader 3, and information obtained by adding the reader ID to the information of the acceleration sensor (motion detection means) 36 and the tag ID stored in the storage unit 37. The signal converter 34 converts data from a digital signal to an analog signal, and the transmitter 38 transmits the converted data to the tag reader 3 wirelessly via the antenna 32.

  The acceleration sensor 36 is a device that detects how much the speed has changed per unit time, and can thereby detect the operation of the person entering and leaving the room that holds the ID tag 2. Therefore, when the detected acceleration is 0, it can be determined that the person permitted to enter / exit has stopped. However, in this embodiment, an acceleration sensor is used as a device for detecting the operation of the person permitted to enter / exit holding the ID tag 2. For example, a vibration sensor can be used. If a vibration sensor is used instead of the acceleration sensor, the cost of the ID tag 2 can be reduced and power consumption can be saved.

  The tag reader 3 is a device that receives a wireless ID transmitted from the ID tag 2, and the tag reader according to the present embodiment always transmits a radio wave serving as a power source of the ID tag 2 from the tag reader itself as shown in FIG. The tag data is read.

  Here, the configuration of the tag reader 3 will be described with reference to FIG. As shown in FIG. 4, the tag reader 3 receives the tag ID sent from the ID tag 2 and the information of the acceleration sensor 36 with the antenna 41, takes out the waveform with the receiver 42, and extracts the waveform with the signal converter 43. Perform digital conversion. The signal converted into the digital signal is held by the control unit 44 and waits for a hold data transmission request from the entrance / exit management server 6. Then, when a retained data transmission request is received from the entrance / exit management server 6 via the communication unit 45, the retained data is transmitted to the entrance / exit management server 6. On the other hand, the transmission unit 46 transmits radio wave energy in the UHF band required by the ID tag 2.

  The tag reader 3 configured as described above is arranged as shown in FIG. The outdoor tag reader 3 </ b> A is arranged such that the boundary line of the communication range (the broken line range in the figure) lies on the door boundary line. Similarly, the indoor tag reader 3B is arranged so that the boundary line of the communication range is placed on the boundary line of the door.

  The intrusion detection sensor 4 is a detecting means for detecting that a human body or an object has entered the vicinity of the door, and is an active infrared sensor by projecting and receiving light, and a passive infrared sensor using a pyroelectric element. In addition to the ultrasonic sensor, a distance measuring sensor using a time-of-flight principle, for example, a distance image sensor may be used. As shown in FIG. 1, the approach detection sensor 4 is arranged such that a detection range (a range indicated by a broken line in the figure) is placed at a position where a human body or an object stops when trying to open a door. However, if the communication between the ID tag 2 and the tag reader 3 is fast and the communication range can be set to the same range as the detection range described above, the entry detection sensor 4 is not necessarily provided, and the tag reader 3 is entered. It may be used as a detection sensor.

  The passage detection sensor 5 is a detection means for detecting whether a human body or an object has passed through the door, and the above-described active infrared sensor is used as an example. An installation example of the passage detection sensor 5 is shown in FIG. FIG. 5 is a top view of the passage detection sensor 5 installed at the entrance / exit. The passage detection sensor 5 includes a beam irradiation unit 25 that irradiates an infrared beam and a light receiving unit 26 that receives the infrared beam emitted from the beam irradiation unit 25. The installation position of the passage detection sensor 5 is 10 to 20 cm in height, and as shown in FIG. 5, by passing two passage detection sensors 5 in parallel, the passage of the infrared beam A and the infrared beam B is passed in the order of passage. The direction in which a person walks can be determined. It is also possible to calculate the number of walking people based on how many legs have passed through the infrared beams A and B. At that time, it is possible for a plurality of people to grasp the number of passing people even if they walk in different directions.

  The entrance / exit management server 6 includes a computer system including a CPU, a ROM, a RAM, an input / output device, a hard disk, and the like, and is connected to the tag readers 3A and 3B, the entrance detection sensors 4A and 4B, and the passage detection sensor 5 described above. It communicates and performs the entrance / exit management process mentioned later, controls the unlocking and locking of a door, and manages the entrance / exit person. In the entrance / exit management server 6 in the present embodiment, all IDs of the registered indoor and outdoor ID tags 2 are grasped.

  Next, the entrance / exit management processing by the entrance / exit management system 1 of the present embodiment will be described based on the flowchart of FIG. However, here, the case of entering the room from the outside will be described. When the user leaves the room, the room and the outdoor may be read.

  As shown in FIG. 6, the entrance / exit management server 6 confirms whether the registered ID tag is indoors or outdoors (S1), and whether or not the outdoor tag reader 3A detects the ID tag. Is determined (S2).

  If no ID tag is detected, the process returns to step S1, and if an ID tag is detected, it is determined whether or not the unique ID of the detected ID tag X is an ID permitted to enter the room (S3).

  Here, since the ID of the person permitted to enter / exit is registered in the entrance / exit management server 6, when the registered ID is received, the ID is passed and an unregistered ID is received. In this case, it is determined as “ID failure”.

  If ID registration is thus confirmed and entry is not permitted, the process returns to step S1, and if entry is permitted, it is next determined whether or not the entry detection sensor 4 is ON (S4).

  Here, a case where the intrusion detection sensor 4 detects a human body is referred to as “entry detection sensor ON”, and a case where the human body is not detected is referred to as “entrance detection sensor OFF”.

  If the entry detection sensor 4 is OFF, the process returns to step S1. If the entry detection sensor 4 is ON, it is next determined whether or not the detected acceleration sensor 36 of the ID tag X is OFF. (S5).

  Here, if the acceleration sensor 36 built in the ID tag senses the speed, that is, if the person entering or leaving the room carrying the ID tag X is moving such as walking, “acceleration sensor ON” is set. When the speed is not sensed, that is, when the person who enters and leaves the room with the ID tag X stops, “acceleration sensor OFF” is set.

In this way, if the acceleration sensor 36 is confirmed to be ON or OFF and the acceleration sensor 36 is ON, the process returns to step S1. If the acceleration sensor 36 is OFF, the conditional expression “tag ID” for unlocking the door is returned. “Pass” AND “Entry detection sensor ON” AND “Acceleration sensor OFF”
The entrance / exit management server 6 determines that the condition is satisfied, and unlocks the door (S6).

  When the door is unlocked, the number of passing people is counted by the passage detection sensor 5 (S7). Then, it is determined whether or not the door is locked (S8). If the door is not locked, it is determined whether or not the ID tag X permitted to enter the room is detected by the indoor tag reader 3B (S9). Here, if the ID tag X is detected by the indoor tag reader 3B, it is checked whether the detected ID tag X is detected by the outdoor tag reader 3A within a predetermined time (S10). In this step, it is checked whether or not the person who has entered the room has left again while the door is open. Then, the entrance / exit management server 6 registers that the detected ID tag X has moved into the room (S11), and returns to step S8.

  On the other hand, when the door is locked in step S8, the entrance / exit management server 6 determines whether the number of passing people detected by the passage detection sensor 5 is equal to the number of ID tags permitted to enter the room (S12). In this case, the process ends normally, and when they are not equal, an abnormality is detected and the entrance / exit management process by the entrance / exit management system 1 of this embodiment is ended.

  Next, a specific example when the above-described entrance / exit management process is performed will be described.

(1) When entering a room The entrance / exit management server 6 knows that the ID tag X registered in the entrance / exit management server 6 currently exists outside the room.

  Here, when an entrance / exit permitter carrying the ID tag X approaches the door to enter the room, the ID tag X receives a UHF charged wave from the tag reader 3A in front of the door. Then, the ID tag X obtains power from the received radio wave, and transmits unique ID information and information indicating that the acceleration sensor is ON (moving) to the tag reader 3A. However, at this time, unlocking is not performed because it does not match the unlocking conditional expression.

  Then, when the entry / exit permitter carrying the ID tag X stops in front of the door, the entry detection sensor 4A in front of the door transmits the entry detection sensor ON information to the entry / exit management server 6, and from the ID tag X Information on acceleration sensor OFF is transmitted. Thus, the door is unlocked because the unlocking conditional expression is satisfied.

  Then, when the ID tag X passes through the door, it is detected by the passage detection sensor 5 and the passing person count becomes “1”, the ID tag X is detected by the indoor tag reader 3B, and the ID tag X is in the room. The entrance / exit management server 6 registers. Thereafter, when the door is locked, the entrance / exit management server 6 checks whether the number of passing people and the number of tags permitted to enter the room are equal. Here, since the count number passed is “1” and the number of ID tags moved from the outside to the room is equal to “1” only by the ID tag X, the processing ends normally.

(2) When a plurality of people enter the room The entrance / exit management server 6 knows that the ID tags X, Y, Z registered in the entrance / exit management server 6 are currently outside the room.

  Here, when an entrance / exit permitter carrying the ID tag X approaches the door in order to enter the room, a UHF charged wave is received from the tag reader 3A in front of the door. Then, the ID tag X obtains power from the received radio wave, and transmits unique ID information and information indicating that the acceleration sensor is ON (moving) to the tag reader 3A. However, at this time, unlocking is not performed because it does not match the unlocking conditional expression.

  Then, when the entry / exit permitter carrying the ID tag X stops in front of the door, the entry detection sensor 4A in front of the door transmits the entry detection sensor ON information to the entry / exit management server 6, and from the ID tag X Information on acceleration sensor OFF is transmitted. Thus, the door is unlocked because the unlocking conditional expression is satisfied.

  At this time, it is assumed that the ID tag X passes through the door, and the ID tag Y is also detected by the tag reader 3A and passes through the door, but the ID tag Z is detected by the tag reader 3A but does not pass through and enter the room.

  As a result, the number of passers detected by the passage detection sensor 5 becomes “2”, the indoor tag reader 3B detects the ID tags X and Y, the ID tags X and Y are in the room, the ID tag Z The entrance / exit management server 6 registers that the user is outside the room. Thereafter, when the door is locked, the entrance / exit management server 6 checks whether the number of passing people and the number of tags permitted to enter the room are equal. Here, since the number of counts that have passed is “2” and the number of ID tags moved from the outside to the room is also “2”, the processing ends normally.

(3) Multiple persons + Unauthorized person The entrance / exit management server 6 knows that the ID tags X, Y, and Z registered in the entrance / exit management server 6 are currently outside the room.

  Here, when an entrance / exit permitter carrying the ID tag X approaches the door to enter the room, the ID tag X receives a UHF charged wave from the tag reader 3A in front of the door. Then, the ID tag X obtains power from the received radio wave, and transmits unique ID information and information indicating that the acceleration sensor is ON (moving) to the tag reader 3A. However, at this time, unlocking is not performed because it does not match the unlocking conditional expression.

  Then, when the entry / exit permitter carrying the ID tag X stops in front of the door, the entry detection sensor 4A in front of the door transmits the entry detection sensor ON information to the entry / exit management server 6, and from the ID tag X Information on acceleration sensor OFF is transmitted. Thus, the door is unlocked because the unlocking conditional expression is satisfied.

  At this time, it is assumed that the ID tags X, Y, and Z pass through the door, and an unauthorized person enters the room through the door.

  Thereby, the count number of the passers detected by the passage detection sensor 5 becomes “4”, the ID tag X, Y, Z is detected by the indoor tag reader 3B, and the ID tags X, Y, Z are in the room. Is registered by the entrance / exit management server 6. Thereafter, when the door is locked, the entrance / exit management server 6 checks whether the number of passing people and the number of tags permitted to enter the room are equal. Here, the number of counts that have passed is “4”, and the number of ID tags moved from the outside to the room is “3”, which does not coincide with each other.

(4) Entering person / exiting person The entrance / exit management server 6 knows that the ID tag X registered in the entrance / exit management server 6 is present outside the room and the ID tag Y is present in the room. Yes.

  Here, when an entrance / exit permitter carrying the ID tag X approaches the door in order to enter the room, a UHF charged wave is received from the tag reader 3A in front of the door. Then, the ID tag X obtains power from the received radio wave, and transmits unique ID information and information indicating that the acceleration sensor is ON (moving) to the tag reader 3A. However, at this time, unlocking is not performed because it does not match the unlocking conditional expression.

  Then, when the entry / exit permitter carrying the ID tag X stops in front of the door, the entry detection sensor 4A in front of the door transmits the entry detection sensor ON information to the entry / exit management server 6, and from the ID tag X Information on acceleration sensor OFF is transmitted. Thus, the door is unlocked because the unlocking conditional expression is satisfied.

  At this time, it is assumed that the ID tag X passes through the door and enters the room, and instead the ID tag Y passes through the door and leaves the room.

  As a result, the number of passers detected by the passage detection sensor 5 becomes “2” in the entrance 1 and exit 1 and the ID tag X is detected by the indoor tag reader 3B and the ID tag X is in the room. The outdoor tag reader 3A detects the ID tag Y, and the entrance / exit management server 6 registers that the ID tag Y is outside the room. Thereafter, when the door is locked, the entrance / exit management server 6 checks whether the number of passing people and the number of tags permitted to enter the room are equal. Here, since the count number passed is “2”, the movement of the ID tag from the outdoor to the indoor is “1”, and the movement from the indoor to the outdoor is “1”. Finish normally.

(5) Entering / exiting person + unauthorized person + exiting person The entry / exit management server 6 indicates that the ID tag X registered in the entry / exit management server 6 is present outside the room and the ID tag Y is present in the room. Is grasping.

  Here, when an entrance / exit permitter carrying the ID tag X approaches the door in order to enter the room, a UHF charged wave is received from the tag reader 3A in front of the door. Then, the ID tag X obtains power from the received radio wave, and transmits unique ID information and information indicating that the acceleration sensor is ON (moving) to the tag reader 3A. However, at this time, unlocking is not performed because it does not match the unlocking conditional expression.

  Then, when the entry / exit permitter carrying the ID tag X stops in front of the door, the entry detection sensor 4A in front of the door transmits the entry detection sensor ON information to the entry / exit management server 6, and from the ID tag X Information on acceleration sensor OFF is transmitted. Thus, the door is unlocked because the unlocking conditional expression is satisfied.

  At this time, the ID tag X passes through the door and enters the room. Instead, the ID tag Y passes through the door and leaves, and further, an unauthorized person passes through the door and enters the room.

  As a result, the number of passers detected by the passage detection sensor 5 is “3” in the entrance room 2 and the exit room 1, the ID tag X is detected by the indoor tag reader 3 </ b> B, and the ID tag X is in the room, The outdoor tag reader 3A detects the ID tag Y, and the entrance / exit management server 6 registers that the ID tag Y is outside the room. Thereafter, when the door is locked, the entrance / exit management server 6 checks whether the number of passing people and the number of tags permitted to enter the room are equal. Here, while the count number passed is “3”, the movement of the ID tag from the outdoor to the indoor is “1”, and the movement from the indoor to the outdoor is “1”. Therefore, it is detected that the unauthorized person has entered the room and is abnormal.

  As described above, in the entrance / exit management system 1 of the first embodiment, the ID tag 2 is detected by the tag reader 3 and the unique ID is permitted to enter the room, the object is detected by the entry detection sensor 4, and the acceleration sensor 36 detects the object. Since the door is unlocked only when it is determined that the operation of the person permitted to enter / exit is stopped, the person carrying the ID tag 2 passes the front of the door and the ID is authenticated and unlocked. Can be prevented. Thereby, the entrance / exit management system which improved the reliability of security is realizable.

  Moreover, in the entrance / exit management system 1 of Example 1, since the number of persons entering / exiting detected by the passage detection sensor 5 is counted, it is possible to accurately detect the entrance / exit of persons who are not permitted to enter the room. Although it has been described that the ID tag X transmits the information that the acceleration sensor is ON by receiving the UHF charging wave from the tag reader 3A even if the unlocking conditional expression is not met, only when the condition is met. It is good also as a structure which transmits.

  Next, a second embodiment of the present invention will be described with reference to FIG. In the above-described first embodiment, when the ID tag X having permission to pass through the door is stopped at a place away from the door within the communication range of the tag reader 3, a person or an object that does not have permission to pass through the door is present. When detected by the entry detection sensor 4, the door is unlocked.

  Therefore, the entrance / exit management system of this embodiment immediately detects that the door has been unlocked in this way, and notifies the contents by an alarm or the like before locking the door. . However, since the configuration of the entrance / exit management system of the present embodiment is the same as that of the first embodiment, description thereof is omitted.

  Here, the entrance / exit management processing by the entrance / exit management system of the present embodiment will be described based on the flowchart of FIG. However, here, the case of entering the room from the outside will be described. When the user leaves the room, the room and the outdoor may be read. In addition, the same flowcharts as those in the first embodiment are denoted by the same reference numerals except for necessary portions, and the description thereof will be omitted, and the characteristic portions of the present embodiment will be mainly described.

  As shown in FIG. 7, steps S <b> 1 to S <b> 7 are the same processing as in the first embodiment. The present embodiment is different from the first embodiment in that it is determined whether or not the outdoor tag reader 3A detects the ID tag X (S70) before the locking process (S8), and the ID tag X is detected. After determining whether the door is locked (S8), if it is not locked, it is determined whether the indoor tag reader 3B has detected the ID tag X that has permitted entry (S9), and the ID tag X is If it is not detected by the indoor tag reader 3B, it is determined whether or not the door passage count detected by the passage detection sensor 5 is “1” and a certain time has passed since unlocking (S90). If this condition is not satisfied, the process returns to step S8. If the condition is satisfied, the person who enters and leaves the room with the ID tag X goes out of the communication range of the tag reader 3A without entering the room, and the door is opened. It is determined that there is a possibility that a person who has not been permitted to enter the room while being locked, the contents are notified by an alarm, etc., and an abnormality is detected and the entrance / exit by the entrance / exit management system 1 of this embodiment is performed. The management process ends.

  Thus, in the entrance / exit management system of the second embodiment, when the door is unlocked, the entrance / exit permitter holding the ID tag X deviates from the communication range of the tag reader 3A without passing through the entrance / exit. When a person entering or leaving the room is detected by the passage detection sensor 5, an abnormality is detected by detecting the detection contents. Therefore, even if an unauthorized person enters the room when the door is accidentally unlocked, it is locked. It is possible to detect an abnormality immediately without waiting for it to be performed, and it is possible to strictly manage entry and exit in real time.

  Next, Embodiment 3 of the present invention will be described with reference to FIG. FIG. 8 is a block diagram showing the configuration of the entrance / exit management system according to the present embodiment.

  As shown in FIG. 8, the entrance / exit management system 81 of the present embodiment has a plurality of tag readers 82A to 82D installed at the entrance and exit, and overlaps the communication ranges of the tag readers 82A to 82D to hold the ID tag. It is designed to be able to identify the location where the person leaving the room is located. That is, with only one tag reader 82A, the communication range is generally wide, and it is difficult to specify whether the person entering or leaving the room is in the vicinity of the entrance / exit. By setting an area that can communicate with the ID tag in the vicinity of the entrance / exit, when only the tag reader 82A reads the ID tag, it is possible to specify that the ID tag, that is, the person entering and leaving the room is at the position. Become. Since other configurations are the same as those of the first embodiment, the description thereof is omitted.

  For example, if there is an entry / exit permitted person carrying an ID tag in the area indicated by the diagonal lines in FIG. 8, the tag reader 82B detects only the tag reader 82A, not the tag reader 82B or 82D. For this reason, when the ID tag is detected only by the tag reader 82A, it can be specified that the person entering and leaving the room is in the vicinity of the door.

  However, in FIG. 8, only the outside of the door is illustrated, but the position of the ID tag can be specified by similarly installing a plurality of tag readers inside the door.

  Then, by adding a condition that the ID tag is in the vicinity of the door to the conditional expression for unlocking the door, the door can be set to be unlocked only when a more severe condition is satisfied.

  In the first embodiment, when the ID tag is stopped at a position away from the door within the communication range of the tag reader 3, the door is unlocked when an unauthorized person or object is detected by the entry detection sensor 4. There was a case. Therefore, in this embodiment, the malfunction as described above can be prevented by making the unlocking conditional expression more strict.

  As described above, in the entrance / exit management system 81 of the third embodiment, a plurality of tag readers are installed on both sides of the entrance and exit, and the communication area of the plurality of tag readers is overlapped, so that the entrance / exit permitting person holding the ID tag is located. Therefore, it is possible to set the door to be unlocked only when the entry / exit permitter is in the vicinity of the door, thereby improving the reliability of the entry / exit management system 81. .

  Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a diagram for explaining the configuration of the passage detection sensor of the entrance / exit management system according to the present embodiment.

  As shown in FIG. 9, a plurality of passage detection sensors 91 installed in the entrance / exit management system of this embodiment are installed in the vertical direction at the entrance of the room. Since other configurations such as a tag reader and an intrusion detection sensor are the same as those in the first embodiment, description thereof is omitted.

  In the first embodiment, it is conceivable that the entering / exiting person counts the carriage when he / she tries to pass through the entrance / exit together with the carriage etc., and erroneously counts the number of entering / exiting persons. Therefore, the passage detection sensors are arranged vertically at intervals of about 3 cm to 5 cm up to a height of about 1 m on the entrance wall, and when the carriage passes through the door, the horizontal part of the carriage is detected by the passage detection sensor and detected. Do not count those who pass the boundary while you are.

  As described above, in the entrance / exit management system according to the fourth embodiment, a plurality of the passage detection sensors 91 are installed in the vertical direction. it can.

  Next, a fifth embodiment of the present invention will be described with reference to FIG. In the first embodiment described above, when an ID tag that has permission to pass through the door is stopped within the communication range of the tag reader 3 and away from the door, a person or object that does not have permission to pass through the door. Is detected by the entry detection sensor 4, the door is unlocked.

  Therefore, in the entrance / exit management system of the fifth embodiment, the door is not unlocked when the time when the ID tag is detected by the entry detection sensor 4 is earlier than the time when the ID tag is detected by the tag reader 3.

  Furthermore, the door is not unlocked when the time when the ID tag is detected by the entry detection sensor 4 is later than the time when the entry / exit permitter holding the ID tag is detected to have stopped.

  By performing such control, it is possible to prevent unauthorized persons from entering the room when the door is accidentally unlocked. However, since the configuration of the entrance / exit management system of the present embodiment is the same as that of the first embodiment, description thereof is omitted.

  Here, the entrance / exit management processing by the entrance / exit management system of the present embodiment will be described based on the flowchart of FIG. However, here, the case of entering the room from the outside will be described. When the user leaves the room, the room and the outdoor may be read. In addition, the same flowcharts as those in the first embodiment are denoted by the same reference numerals except for necessary portions, and the description thereof will be omitted, and the characteristic portions of the present embodiment will be mainly described.

  As shown in FIG. 10, steps S <b> 1 to S <b> 3 and steps S <b> 6 to S <b> 12 are the same as those in the first embodiment. However, the present embodiment is different from the first embodiment in that the room enters after step S <b> 3. If it is permitted, it is determined whether or not the ID tag X is newly detected (S30). If it is newly detected, the detection time t1 is set (S31).

  Next, it is determined whether the intrusion detection sensor 4 is ON (S4). If the intrusion detection sensor 4 is OFF, the process returns to step S1 as well. In this embodiment, the intrusion detection sensor 4 is ON. If it is, the time when the sensor is turned on is set as t2 (S40).

  The same is true in determining whether or not the acceleration sensor 36 of the detected ID tag X is OFF, but in this embodiment, the acceleration sensor 36 is confirmed to be ON and OFF by confirming whether the acceleration sensor 36 is ON or OFF. If it is ON, the process returns to step S1, and if the acceleration sensor 36 is OFF, it is next determined whether or not the acceleration sensor 36 of the ID tag X is newly OFF (S50).

  If the acceleration sensor is newly turned off, the time t3 when the acceleration sensor is turned off is set (S51).

When the times t1 to t3 are set in this way, each time is next set to t1 <t2 ≦ t3.
(S52). If this relationship is not established, the process returns to step S1 (not unlocked here). If this relationship is established, t1 to t3 are reset (S53). ), Conditional expression “tag ID passed” AND “entrance detection sensor ON” AND “acceleration sensor OFF” for unlocking the door
And the entrance / exit management server 6 determines that the relationship of t1 <t2 ≦ t3 is satisfied, and unlocks the door (S6).

  By determining whether the door is unlocked in this way, even when the unlocking conditional expression is satisfied, the ID tag X is detected by the entry detection sensor 4 from the time t1 when the tag tag 3 detects the ID tag X. When the time t2 is earlier, the door can be prevented from being unlocked, and the human body is detected by the entry detection sensor 4 than the time t3 at which the entry / exit permitter holding the ID tag X is detected to have stopped. If the time t2 is later, the door can be unlocked.

  When the door is unlocked in this way, the number of passing people is counted by the passage detection sensor 5 (S7). Then, it is determined whether or not the door is locked (S8). If it is not locked, it is determined whether or not the ID tag X permitted to enter the room is detected by the indoor tag reader 3B (S9). If the ID tag X is detected by the indoor tag reader 3B, it is detected. Whether the ID tag X is detected by the outdoor tag reader 3A within a predetermined time is checked (S10). Then, the entrance / exit management server 6 registers that the detected ID tag X has moved into the room (S11), and returns to step S8.

  On the other hand, when the door is locked in step S8, the entrance / exit management server 6 determines whether the number of passing people detected by the passage detection sensor 5 is equal to the number of ID tags permitted to enter the room (S12). In this case, the process ends normally, and when they are not equal, an abnormality is detected and the entrance / exit management process by the entrance / exit management system 1 of this embodiment is ended.

  Next, a specific example when the above-described entrance / exit management process is performed will be described.

(1) Multiple persons + Unauthorized person The entrance / exit management server 6 knows that the ID tags X, Y, and Z registered in the entrance / exit management server 6 are currently outside the room.

  Here, when an unauthorized person stands in front of the door and turns on the entry detection sensor 4A, and then the entry / exit permitted person carrying the ID tags X and Y enters the communication range of the tag reader 3A and stops, The ID tags X and Y receive the UHF charging wave from the tag reader 3A. The ID tags X and Y obtain power from the received radio waves, and transmit unique ID information and information on acceleration sensor OFF to the tag reader 3A.

  At this time, although the requirements of the unlocking conditional expression are the same, the order is not satisfied. That is, the door is not unlocked because the time (t2) when the entry detection sensor 4A is turned on is earlier than the time (t1) when the ID tags X and Y are detected by the tag reader 3A. In order to unlock, an unauthorized person leaves the entry detection sensor 4A and turns off the entry detection sensor 4A before entering the room.

In addition, when the requirements and order of the unlocking conditional expression are satisfied, the unlocking may be performed only when the difference in detection time is greater than or equal to the set value. That is, when a person who enters and leaves the room enters the communication range of the tag reader 3A, it is considered that there is a slight time difference from standing in front of the door to turning on the entry detection sensor 4A. The time difference is greater than the set value, and the following formula (1)
Time (t2) −Time (t1)> 0 (1)
Unlocks only when the above conditions are met. According to this, an unauthorized person stands in front of the door and turns on the entry detection sensor 4A as the entry / exit permitted person carrying the ID tag X enters the communication range of the tag reader 3A and stops. However, the door is not unlocked because the difference in detection time as described above is not greater than a predetermined value.

  In this way, by specifying the difference in detection time in addition to the requirements and order of the unlocking conditional expression, the unlocking of the door can be managed more strictly.

(2) Multiple persons + Unauthorized person The entrance / exit management server 6 knows that the ID tags X, Y, and Z registered in the entrance / exit management server 6 are currently outside the room.

  Here, when an entrance / exit permitter carrying the ID tags X and Y enters the communication range of the tag reader 3A and stops when trying to enter the room, the ID tags X and Y receive UHF charged waves from the tag reader 3A. The ID tags X and Y obtain power from the received radio waves, and transmit unique ID information and information on acceleration sensor OFF to the tag reader 3A. Thereafter, it is assumed that an unauthorized person stands in front of the door and turns on the entry detection sensor 4A.

  At this time, although the requirements of the unlocking conditional expression are the same, the order is not satisfied. That is, the door is not unlocked because the time (t2) when the approach detection sensor 4A is turned on is later than the time (t3) when the acceleration sensor is turned off. In order to unlock, an unauthorized person leaves the entry detection sensor 4A and turns off the entry detection sensor 4A before entering the room.

In addition, when the requirements and order of the unlocking conditional expression are satisfied, unlocking may be performed only when the difference in detection time is less than the set value. That is, when the person who enters and leaves the room stands in front of the door and turns on the entry detection sensor 4A, the acceleration sensor is considered to be turned off almost simultaneously. Therefore, the difference in detection time is less than the set value, and the following formula ( 2)
Time (t3) −Time (t2) ≧ 0 (2)
Unlocks only when the above conditions are met. According to this, even if an entry / exit permitted person carrying the ID tag X enters the communication range of the tag reader 3A trying to enter the room, the unauthorized person does not stop immediately but stands in front of the door and turns on the entry detection sensor 4A. Even if the entry / exit permitter stops after the entrance detection sensor 4A is turned on, if there is a time difference from when the entrance detection sensor 4A is turned on until the entry / exit permitter stops and the acceleration sensor is turned off, the difference in detection time as described above may occur. The door is not unlocked because it does not fall below the predetermined value.

  In this way, by specifying the difference in detection time in addition to the requirements and order of the unlocking conditional expression, the unlocking of the door can be managed more strictly.

  As described above, in the entrance / exit management system of the fifth embodiment, when the time (t2) when the object is detected by the entry detection sensor 4 is earlier than the time (t1) when the ID tag 2 is detected by the tag reader 3, the door Can be prevented from being accidentally unlocked when an unauthorized person is waiting in front of the door, thereby improving the reliability of the entrance / exit management system. Can do.

  Moreover, in the entrance / exit management system of a present Example, the time (t2) which detected the object by the approach detection sensor 4 rather than the time (t3) which detected that the entrance / exit permitter holding the ID tag 2 stopped. If it is later, the door will not be unlocked, so if an unauthorized person is waiting in front of the door, it can be further prevented from being accidentally unlocked. The reliability of the system can be further improved.

  In addition, if the requirements and order of the unlocking conditional expression are satisfied, and if the unlocking is performed only when the difference in detection time is greater than (or less than) the set value, the unauthorized person will Even if the entrance detection sensor is turned on in accordance with the movement of the person who enters and leaves the room, the door is not unlocked, so that the unlocking of the door can be managed more strictly.

  As mentioned above, although the entrance / exit management system of this invention was demonstrated based on the illustrated embodiment, this invention is not limited to this, The structure of each part is replaced with the thing of the arbitrary structures which have the same function. be able to.

It is a figure which shows the structure of the entrance / exit management system which concerns on Example 1 of this invention. (A), (b) is a figure for demonstrating the ID tag and tag reader utilized with the entrance / exit management system of this invention. It is a block diagram which shows the internal structure of the ID tag utilized with the entrance / exit management system of this invention. It is a block diagram which shows the internal structure of the tag reader utilized with the entrance / exit management system of this invention. It is a figure which shows the structure of the passage detection sensor utilized with the entrance / exit management system of this invention. It is a flowchart which shows the entrance / exit management process by the entrance / exit management system which concerns on Example 1 of this invention. It is a flowchart which shows the entrance / exit management process by the entrance / exit management system which concerns on Example 2 of this invention. It is a figure which shows the structure of the entrance / exit management system which concerns on Example 3 of this invention. It is a figure which shows the structure of the passage detection sensor utilized with the entrance / exit management system which concerns on Example 4 of this invention. It is a flowchart which shows the entrance / exit management process by the entrance / exit management system which concerns on Example 5 of this invention.

Explanation of symbols

1 Entrance / exit management system 2 ID tag (ID tag)
3A, 3B Tag reader 4A, 4B Approach detection sensor 5 Passage detection sensor (passage detection means)
6 Entrance / exit management server (entrance / exit management means)
31 Electric Power Generation Unit 32 Antenna 33 Reception Unit 34 Signal Conversion Unit 35 Control Unit 36 Acceleration Sensor (Motion Detection Unit)
37 storage unit 38 transmission unit 41 antenna 42 reception unit 43 signal conversion unit 44 control unit 45 communication unit 46 transmission unit

Claims (9)

An entrance / exit management system for managing entrance / exit persons by unlocking and locking a door installed at the entrance of the room,
An operation detection unit that is held by an entry / exit permitter who is permitted to enter / exit into the room and detects an operation state of the entry / exit permitter, a unique ID set in the ID tag, and detection of the operation detection unit An ID tag having a transmission means for transmitting the result;
Tag reader communication range with the ID tag is set to the inside or outside of the doorway, for receiving the detection result of the unique ID and the operation detecting means it is transmitted from the ID tag,
An object detection range is set on the same side as the side on which the communication range of the tag reader is set, in the vicinity of the entrance and exit, and an object detection means for detecting the object and a detection result of the object detection means are transmitted. An approach detection sensor having a transmission means;
The unique ID of the ID tag transmitted from the tag reader, the detection result of the motion detection means, and the detection result of the detection means transmitted from the intrusion detection sensor are received, respectively. When it is a permitted ID, the detection result of the entry detection sensor indicates that an object has been detected, and the detection result of the motion detection means indicates that the operation of the entry / exit permitter has stopped Is an entrance / exit management means for unlocking the door of the entrance,
An entrance / exit management system comprising: Comprising passage detection means for detecting a person entering or leaving the entrance and exit,
The entry / exit management means counts the number of persons entering and leaving the room detected by the passage detection means, and determines whether there is an abnormality based on the count number and the number of movements of the ID tag that has passed through the entrance / exit. The entrance / exit management system according to claim 1.   The entrance / exit management means is configured such that when the door is unlocked, an entrance / exit permitter holding the ID tag leaves the communication range of the tag reader without passing through the entrance / exit, and at this time, the passage detection means The entrance / exit management system according to claim 2, wherein when a person entering or leaving the room is detected by, an abnormality is determined.   A plurality of the tag readers are installed inside and outside the entrance and exit, respectively, and a position where an entry / exit permit person holding the ID tag is located is specified by overlapping a communication range of the plurality of tag readers. The entrance / exit management system according to any one of claims 1 to 3.   The entrance / exit management system according to any one of claims 2 to 4, wherein a plurality of the passage detection means are installed in a vertical direction.   The entrance / exit management means compares the time when the ID tag is detected by the tag reader with the time when an object is detected by the entry detection sensor, and if the detection time by the entry detection sensor is earlier, the entrance / exit management means The entrance / exit management system according to any one of claims 1 to 5, wherein the door is not unlocked.   The entry / exit management means compares the time when the entry / exit permitter holding the ID tag is detected with the time when an object is detected by the entry detection sensor, and is detected by the entry detection sensor. The entrance / exit management system according to any one of claims 1 to 6, wherein when the time is later, the door of the entrance / exit is not unlocked.   The entrance / exit management means does not unlock the door of the entrance when the time difference between the time when the ID tag is detected by the tag reader and the time when the object is detected by the entry detection sensor is less than a set value. The entrance / exit management system according to any one of claims 1 to 7.   When the time difference between the time when the object is detected by the entry detection sensor and the time when the operation detecting means detects that the operation of the person permitted to enter and exit is stopped is greater than or equal to a set value, the entrance / exit management means The entrance / exit management system according to any one of claims 1 to 8, wherein the door is not unlocked.

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