JP2012219483A - Entry and exit management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an entry and exit management system using a wireless tag for selecting a door to be unlocked.SOLUTION: The entry and exit management system includes: a plurality of tag readers 3 provided corresponding to a plurality of doors 2, respectively; selecting means 5 for selecting the door 2 to be unlocked from the plurality of doors 2 when the plurality of tag readers 3 receive electric waves 9 transmitted from a wireless tag 7 at the same time; and output means 5 for outputting an instruction 11 to unlock the door 2 selected when a predetermined operation is performed by the wireless tag 7. Thus, the wireless tag 7 is used for selecting the door 2 to be unlocked.

Description

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

  In the entrance / exit management system, a tag reader is provided corresponding to the door. The tag reader transmits LF radio waves. Within this LF radio wave range, the wireless tag receives the LF radio wave and transmits the UHF radio wave. The tag reader receives the UHF radio wave and unlocks the corresponding door.

  The LF radio wave is propagated up to a radius of about 2 m around the tag reader. That is, in order to unlock the door, it is necessary to move to a range of about 2 m from the door with the wireless tag. For this reason, when the system is applied to a door corresponding to an outdoor vehicle or the like, the traveling vehicle cannot be smoothly passed.

  In contrast, if the wireless tag can transmit UHF radio waves without receiving LF radio waves, the door can be unlocked from a location away from the door.

  However, in places where doors are adjacent, tag readers corresponding to both doors receive UHF radio waves. For this reason, it cannot be determined which door should be unlocked.

  On the other hand, a system for determining which door should be unlocked based on the difference in radio wave intensity has been proposed. Specifically, the door to be unlocked is automatically determined when the intensity of the radio wave is equal to or higher than a certain value (see, for example, Patent Document 1).

  However, in the thing of patent document 1, when the intensity | strength of an electromagnetic wave is less than a fixed value, it cannot be determined which door should be unlocked.

  On the other hand, what designates the door which should be unlocked with the user side apparatus is proposed (for example, refer to patent documents 2).

JP 2001-204059 A JP 2002-161656 A

  However, the wireless tag does not have a function for designating a door. For this reason, the designation method described in Patent Document 2 cannot be applied to a system using a wireless tag.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an entrance / exit management system capable of selecting a door to be unlocked using a wireless tag. is there.

  In the entrance / exit management system according to the present invention, a plurality of tag readers provided corresponding to each of the plurality of doors, and when the plurality of tag readers simultaneously receive radio waves transmitted from the wireless tag, Selecting means for selecting a door to be unlocked from the plurality of doors; and output means for outputting an instruction for unlocking the door selected when a predetermined operation is performed on the wireless tag. It is a thing.

  According to this invention, a door to be unlocked can be selected using a wireless tag.

It is a block diagram of the entrance / exit management system in Embodiment 1 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an entrance / exit management system according to Embodiment 1 of the present invention.

  In FIG. 1, 1 is an adjacent living room. A door 2 is provided on one side of each living room 1. Each door 2 is adjacent to each other. A tag reader 3 is provided in the vicinity of each door 2. A display device 4 is provided in the vicinity of each tag reader 3.

  Each tag reader 3 and each display device 4 are connected to an ID controller 5. A storage device 6 is connected to the ID controller 5. The storage device 6 stores user personal information.

  Reference numeral 7 denotes a wireless tag. The wireless tag 7 is carried by a user (not shown). The wireless tag 7 is provided with a button 8.

  In such a hands-free entry / exit management system, when the user presses the button 8 away from the door 2, the wireless tag 7 directly transmits the UHF radio wave 9. When the door 2 is adjacent, the UHF radio wave 9 is received by both tag readers 3 within a certain time.

  Both tag readers 3 acquire ID information of the wireless tag 7 from the UHF radio wave 9 and measure the electric field strength of the UHF radio wave 9. Both tag readers 3 output the ID information and the electric field strength as received information 10 to the ID controller 5.

  The ID controller 5 compares the electric field strengths output from both tag readers 3 when the same reception information 10 is received within a predetermined time. When the difference in the electric field strength is larger than the predetermined value, the ID controller 5 outputs an unlocking instruction 11 for the door 2 to the tag reader 3 receiving the UHF radio wave 9 having a strong electric field strength. Based on this instruction 11, the tag reader 3 unlocks the door 2.

  On the other hand, when the difference in electric field intensity output from both tag readers 3 is equal to or smaller than a predetermined value, the ID controller 5 functions as a selection unit that selects the door 2 to be unlocked.

  Specifically, the ID controller 5 selects one of the doors 2 as the door 2 to be unlocked. At this time, the ID controller 5 outputs a blinking instruction 12 to one of the display devices 4 adjacent to one of the doors 2. Based on this instruction 12, one of the display devices 4 blinks to indicate that one of the doors 2 is selected as the door 2 to be unlocked.

  Thereafter, when a predetermined time (for example, 5 seconds) elapses, the ID controller 5 outputs a blinking stop instruction 12 to one of the display devices 4. Based on this instruction 12, one of the display devices 4 stops blinking.

  Thereafter, the ID controller 5 selects the other door 2 as the door 2 to be unlocked. At this time, the ID controller 5 outputs a blinking instruction 12 to the other display device 4 adjacent to the other door 2. Based on this instruction 12, the other display device 4 blinks to indicate that the other door 2 is selected as the door 2 to be unlocked.

  Thereafter, when a certain time (for example, 5 seconds) elapses, the ID controller 5 outputs a blinking stop instruction 12 to the other side of the display device 4. Based on this instruction 12, the other display device 4 stops blinking.

  Thereafter, the ID controller 5 repeats the change of the door 2 to be unlocked. At this time, the ID controller 5 controls the display device 4 in the same manner as described above according to the change of the door 2 to be unlocked.

  When the user selects the door 2 to be unlocked, the button 8 of the wireless tag 7 may be pressed again when the display device 4 adjacent to the door 2 to be unlocked is blinking. For example, when the user unlocks one of the doors 2, the button 8 of the wireless tag 7 may be pressed when one of the display devices 4 is blinking.

  By this pressing, the wireless tag 7 transmits the UHF radio wave 9. This UHF radio wave 9 is received by one of the tag readers 3. One of the tag readers 3 outputs the ID information and the electric field strength as reception information 10 to the ID controller 5.

  At this time, the UHF radio wave 9 is also received by the other tag reader 3. For this reason, the other of the tag readers 3 also outputs the ID information and the electric field strength as received information 10 to the ID controller 5.

  However, the ID controller 5 recognizes that one of the doors 2 is the door 2 to be unlocked. For this reason, the ID controller 5 collates the ID information from one of the tag readers 3 with the personal information stored in the storage device 6.

  After that, the ID controller 5 functions as an output unit that outputs the unlocking instruction 11 to one of the tag readers 3 when it is determined that the passage is possible based on the collation result. Based on this instruction 11, one of the tag readers 3 unlocks one of the doors 2.

  According to the first embodiment described above, when a plurality of tag readers 3 are simultaneously receiving the UHF radio wave 9 transmitted from the wireless tag 7, the selection is made when the button 8 of the wireless tag 7 is pressed. The door 2 is unlocked. For this reason, even when there is no difference in the electric field intensity of the UHF radio wave 9 and it is difficult to automatically determine the door 2 to be unlocked, the door 2 to be unlocked can be selected. If this system is applied to the door 2 corresponding to an outdoor vehicle or the like, the traveling vehicle can be smoothly passed.

  When the difference in the electric field strength of the UHF radio wave 9 received by each of the plurality of tag readers 3 is equal to or greater than a predetermined value, the door 2 corresponding to the tag reader 3 receiving the UHF radio wave 9 having a high electric field strength. Unlocks. For this reason, the appropriate door 2 can be unlocked without requesting the user to operate again.

  Further, the display device 4 displays that the corresponding door 2 is selected. For this reason, erroneous unlocking of the door 2 can be prevented. Thereby, security of the living room 1 etc. can be maintained.

  The operation when selecting the door 2 to be unlocked is not limited to pressing the button 8. That is, the door 2 to be unlocked may be selected by a predetermined operation on the wireless tag 7 side.

DESCRIPTION OF SYMBOLS 1 Living room 2 Door 3 Tag reader 4 Display apparatus 5 ID controller 6 Memory | storage device 7 Wireless tag 8 Button 9 UHF radio wave 10 Reception information 11 Unlocking instruction 12 Instruction

Claims (3)

A plurality of tag readers provided corresponding to each of the plurality of doors;
A selection means for selecting a door to be unlocked from the plurality of doors when the plurality of tag readers simultaneously receive radio waves transmitted from the wireless tag;
An output means for outputting a door unlocking instruction selected when a predetermined operation is performed on the wireless tag;
An entrance / exit management system characterized by comprising:   The output means unlocks the door selected when a predetermined operation is performed on the tag when a difference in intensity of radio waves received by each of the plurality of tag readers is a predetermined value or less. 2. An entry / exit room according to claim 1, wherein an instruction is output, and if the difference is larger than a predetermined value, an instruction to unlock the door corresponding to the tag reader receiving a strong radio wave is output. Management system. A display device that is provided in proximity to each of the plurality of tag readers and displays that the door is selected when a door corresponding to the adjacent tag reader is selected;
The entrance / exit management system of Claim 1 or Claim 2 characterized by the above-mentioned.

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