JP2007170086A - Room entering-leaving management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a room entering-leaving management system detecting the entering and leaving of persons and articles without omission. <P>SOLUTION: The room entering-leaving management system has first communication means 12a and 12b transmitting question signals and a responder 3 receiving the question signals and transmitting response signals. The room entering-leaving management system further has second communication means 13a and 13b receiving the response signals and an entering-leaving decision section 4 deciding a room entering and leaving from the response signals. The first communication means 12a and 12b have different communication ranges respectively, each communication range is superposed partially and the question signals containing different questions ID at every communication range are transmitted by the same first communication frequency. The responder 3 transmits the questions ID and the response signals containing peculiar users ID 16 to the question signals by a second communication frequency. When the questions ID differ and the users ID 16 receive the same response signal by the second communication means 13a and 13b, the room entering-leaving decision section 4 decides the room entering and leaving in response to the receiving orders of the questions ID. The responder 3 cannot recognize either question signal in the superposing section of the communication ranges. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an entrance / exit management system for managing movement of people and objects.

  Conventionally, a technique for managing the direction and time of entering and leaving a person or an object by holding a tag that transmits a unique signal to a person or an object entering or leaving the room from a building room is generally used. It is known (for example, see Patent Documents 1 to 4).

Specifically, a person or an object is provided with a tag having an infrared receiver and an authentication transmitter, and a reader having an infrared transmitter and an authentication communication unit is installed at the doorway. When the tag receives infrared rays, the transmitter transmits a signal including the ID to the reader for authentication. Thereby, the passing state with the door interposed is managed. In addition to the reader, a device for analyzing the intensity and direction of radio waves, a camera, or an infrared sensor is installed near the door to detect the entry and exit of people.
JP 9-231427 A (refer to FIG. 1, FIG. 2, [0015]-[0016] in particular) JP-A-10-293886 JP-A-8-263714 Japanese Patent Laid-Open No. 2003-21679

  However, in these conventional entrance / exit management devices, when a large number of people pass through the door (entrance / entrance) continuously, there is an influence due to the overlap of people and things such as shielding of infrared rays and not being reflected in the camera. Thereby, when many people enter / exit continuously, it is impossible to accurately detect entering / exiting the door.

  Then, an object of this invention is to provide the entrance / exit management system which can detect the entrance / exit of a person or an object without omission.

  The entrance / exit management system of the present invention includes a first communication means for transmitting a question signal, a second communication means for receiving a response signal for the question signal, and a responder for receiving the question signal and transmitting the response signal. And an entrance / exit determination unit for determining entrance / exit. The first communication means is in the vicinity of the boundary separating the two areas, each having a different communication area as a main communication range, and each communication range partially overlapping on the boundary. Question signals including different question IDs are transmitted on the same first communication frequency. The responder has a unique user ID, and when receiving a question signal in the communication range of the first communication means, the responder sends a response signal including its own user ID together with the question ID included in the question signal to the first Transmission is performed at a second communication frequency different from the communication frequency. The second communication means has a second communication range including each communication range of the first communication means, and receives a response signal transmitted from the responder from the second communication range. When the second communication means receives two response signals having different question IDs but the same user ID, the entrance / exit determination unit determines whether the first ID is included in each response signal. In the communication range of the communication means, an entry into one area and a departure from one area are determined. The responder cannot recognize any question signal and does not respond to any question signal in a part where the communication range of the first communication means overlaps.

  A non-communication range is provided in the overlapping portion by overlapping a part of the communication range of the first communication means. The communicable range of the first communication means can be divided with this communicable range as a boundary. This makes it possible to accurately detect entry / exit through the door when a large number of people enter / exit continuously without being affected by the overlap of people and objects.

  ADVANTAGE OF THE INVENTION According to this invention, the entrance / exit management system which detects the entrance / exit of a person or an object without omission can be provided.

  Embodiments of the present invention will be described below with reference to the drawings. In the description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

(First embodiment)
As shown in FIG. 1, the entrance / exit management system according to the first embodiment of the present invention transmits a question signal and receives a response signal to the question signal, the first reader 1 and the second reader. 2, a responder 3 that receives the interrogation signals from the first and second readers 1 and 2 and transmits a response signal, and a response based on the response signals received by the first and second readers 1 and 2 And an entrance / exit determination unit 4 for determining entrance / exit of the container 3.

  Each of the first reader 1 and the second reader 2 transmits first interrogation signals (first communication means) 12a and 12b that transmit interrogation signals to the responder 3, and response signals for the interrogation signals. Second communication units (second communication means) 13a and 13b for receiving and interface units 11a and 11b for communicating with the entrance / exit determination unit 4 are provided.

  The responder 3 includes a first communication unit 14 that receives a question signal from the first communication units 12a and 12b, a second communication unit 15 that transmits a response signal to the question signal, and a unique user ID 16. Prepare. That is, even if there are a plurality of responders 3, the user IDs 16 included in the respective response signals are different, so that the plurality of responders 3 can be identified with reference to the unique user IDs 16.

  The first communication units 12a and 12b transmit question signals including different question IDs (question ID1, question ID2), respectively. Each of the first communication units 12a and 12b transmits a question signal at the same first communication frequency. For example, an LF wave (long wave) may be used as the first communication frequency. The LF wave has a feature that it is excellent in area limitation that limits a region where radio waves reach to a specific area, and is hardly affected by the overlap of people or objects wearing the responder 3. This makes it possible to accurately detect entry / exit through the door when a large number of people enter / exit continuously without being affected by the overlap of people and objects.

  When the first communication unit 14 receives the question signal, the second communication unit 15 transmits the user ID 16 included in the response signal together with the question ID included in the question signal. The second communication unit 15 transmits a response signal at a second communication frequency different from the first communication frequency. For example, a high-speed specific power-saving radio in the 400 MHz band may be used as the second communication frequency. Thereby, even if the interrogation signal is continuously transmitted, the response signal can reach the first and second readers 1 and 2 without being interrupted by the interrogation signal.

  Each of the second communication units 13a and 13b receives a response signal including the question ID1 or the question ID2 and the user ID 16 unique to the responder 3 that is the transmission source. It is assumed that the second communication units 13a and 13b have received two response signals having different question IDs but the same user ID. At this time, the entry / exit determination unit 4 determines the movement of the responder 3 according to the reception order of the question IDs included in each response signal. Details will be described later with reference to FIGS.

With reference to FIG.2 and FIG.3, the example of installation of the entrance / exit management system of FIG. 1 is demonstrated. The first and second readers 1 and 2 are installed with a door interposed therebetween. The first and second readers 1 and 2 have different areas as main communication ranges (first reader communication range A ₁ , second reader communication range A ₂ ). The first reader communication range A ₁ and the second reader communication range A ₂ are respectively arranged in the vicinity of a door (boundary) that separates the entrance area and the exit area (two areas). The first reader 1 can transmit an interrogation signal in the _first reader communication range A1, and the second reader 2 can transmit an interrogation signal in the _second reader communication range A2. First reader communication range A ₁ and the second reader communication range A ₂ is a limited area from the door to several m. This makes it less susceptible to human overlap.

First reader communication range A ₁ and the second reader communication range A ₂ is partially overlap on the door. In this overlapping portion (overlapping communication range A ₁₂ ), the responder 3 cannot recognize any question signal of the first and second readers 1 and 2 and responds to any question signal. I can't. That is, an incommunicable area is formed on a door (boundary) that separates the entrance area and the exit area (two areas), and this incommunicable area is the communicable area between the first reader 1 and the second reader 2 ( A ₁ and A ₂ ) are split.

  The responder 3 is attached to a user or an object passing through the door.

The second communication unit 13a, 13b has a first reader communication range _{A 1} and the second communication range encompassing the reader communication range _{A 2} (second communication range). Therefore, the second communication units 13a and 13b can receive the response signal transmitted from the responder 3 from this communication range.

  It is assumed that the second communication units 13a and 13b have received two response signals having different question IDs but the same user ID. In other words, it is assumed that a response signal including the question ID1 and a response signal including the question ID2 are received within a predetermined time. At this time, the entry / exit determination unit 4 makes an entry into and exit from one area of the communication range of the first communication means according to the reception order of the question IDs included in each response signal. to decide. For example, when a response signal including the question ID 1 is received first and then a response signal including the question ID 2 is received, it is determined that the user wearing the responder 3 has moved from the entrance area to the exit area.

With reference to FIG. 4, an example of the processing operation of the entrance / exit management system of FIG. 1 will be described. Here, the user takes be described as an example the processing operation when moving through the overlapping communication range A ₁₂ from the first reader communication range A ₁ to the second reader communication range A _2.

(A) First, in S01, the user wearing the transponder 3, approaches from the entry area side door, enters the first reader communication range A _1. Since the question signal including the question ID ₁ is continuously transmitted in the first reader communication range A ₁ , the responder 3 that has entered the first reader communication range A ₁ uses the question ID ₁ in the first communication unit 14. Is received (S02).

(B) In S03, the responder 3 uses the second communication unit 15 to transmit a response signal including the question ID 1 and the user ID 16 toward the first reader 1 or the second reader 2. The second communication unit 13a, 13b is, for having a first reader communication range _{A 1} and the second communication range encompassing the reader communication range _{A 2,} the first and second reader 1 and 2, the communication The response signal transmitted from the range by the responder 3 can be received using the second communication units 13a and 13b. Here, the description continues when the first reader 1 receives the response signal.

  (C) In S04, the first reader 1 recognizes the responder 3 based on the user ID 16 included in the response signal. That is, it is detected that the user who has the responder 3 having the user ID 16 has entered the room entry area. In S05, the first reader 1 uses the second communication unit 13a to transmit a recognition completion signal indicating that the recognition has been completed to the responder 3, and the responder 3 This recognition completion signal is received using the communication unit 15.

(D) In S06, the interface unit 11a of the first reader 1 transmits the user ID 16 included in the response signal to the entrance / exit determination unit 4. At S07, the user enters the first reader communication range _{A 1} to overlap the communication range _{A 12.} In this overlapping portion (overlapping communication range A ₁₂ ), the interrogation signal from the first reader 1 and the interrogation signal from the second reader 2 are mixed and interfere with each other. The interrogation signals of the first and second readers 1 and 2 cannot be recognized and cannot be received (S08).

(E) Thereafter, at S07, the user enters the overlapping coverage _{A 12} to the second reader communication range _{A 2.} Then, since only the question signal including the question ID ₂ is continuously transmitted in the second reader communication range A ₂ , the responder 3 that has entered the second reader communication range A ₂ The unit 14 receives a question signal including the question ID 2 (S10).

(F) In S <b> 11, the responder 3 transmits a response signal including the question ID 2 and the user ID 16 toward the first reader 1 or the second reader 2 using the second communication unit 15. The second communication unit 13a, 13b is, for having a first reader communication range _{A 1} and the second communication range encompassing the reader communication range _{A 2,} the first and second reader 1 and 2, the communication The response signal transmitted from the range by the responder 3 can be received using the second communication units 13a and 13b. Here, the description is continued for the case where the second reader 2 receives the response signal.

  (G) In S12, the second reader 2 recognizes the responder 3 by the user ID 16 included in the response signal. That is, it is detected that the user who has the responder 3 having the user ID 16 has entered the exit area. Then, in S13, the second reader 2 transmits a recognition completion signal indicating that the recognition has been completed to the responder 3 using the second communication unit 13b. This recognition completion signal is received using the communication unit 15. In S14, the interface unit 11b of the second reader 2 transmits the user ID 16 included in the response signal to the entrance / exit determination unit 4.

  With the above processing procedure, the user's exit operation from the entrance area to the exit area is detected. In addition, by performing the reverse procedure described above, the user's entry operation from the exit area to the entry area is detected.

  Since the responder 3 transmits a response signal including the unique user ID 16 to the reader, even if a plurality of users each wearing the responder 3 continuously enter or leave the room, The above-described processing operation can be performed. Therefore, when a large number of people pass through the door, a plurality of users can be recognized continuously.

Further, as shown in FIGS. 2 and 3, the first reader communication range A ₁ to the door at the boundary, the second place and the reader communication range A _2, any question in the boundary portion including the door signal can be detected accurately entry and exit operations of the user by also forming the unrecognized overlapping communication range a ₁₂ by superposed waves. For example, the user has been entered into the overlapping coverage A ₁₂ from the first reader communication range A _1, and did not to the second reader communication range A _2. In this case, which may result in mistaken if the in overlapping communication ranges A ₁₂ would be aware of the second interrogation signal from the reader 2 and enters the second to the reader communication range A _2. However, by making the unrecognizable both interrogation signal in overlapping communication ranges A _12, although close to the door for performing the exit operation, it is possible to correct motion detection also when turned back was like.

(Second Embodiment)
In the second embodiment, a system will be described in which a function for determining whether or not the user has a valid entry / exit authority is added to the entry / exit management system of FIG.

  As shown in FIG. 5, the entrance / exit management system according to the second embodiment of the present invention transmits a question signal and receives a response signal to the question signal, the first reader 1 and the second reader. 2, a responder 3 that receives the interrogation signals from the first and second readers 1 and 2 and transmits a response signal, and a response based on the response signals received by the first and second readers 1 and 2 The entrance / exit determination part 4 which judges the entrance / exit of the container 3 and the door 5 opened / closed or unlocked based on the judgment of the entrance / exit determination part 4 are provided.

  The difference from the system of FIG. 1 is the entrance / exit determination unit 4 and the door 5. The configurations of the first reader 1 and the second reader 2 are the same as those in FIG. 1, and a description thereof will be omitted. Similarly, the configuration of the responder 3 is the same as that of FIG.

  The entrance / exit determination unit 4 includes a door opening / closing control unit 21 that controls opening / closing or locking / unlocking of the door 5, a database 22 in which the user ID 16 of the responder 3 permitted to enter / exit via the door 5 is stored, An interface unit 23 for mainly communicating user IDs between the first reader 1 and the second reader 2 is provided.

  When the second communication units 13a and 13b receive the response signal, the entry / exit determination unit 4 determines whether the user ID 16 included in the response signal is stored in the database 22, and the database 22 When it matches the user ID stored in, a control signal for opening or unlocking the door 5 is output to the door opening / closing control unit 21. The door opening / closing control unit 21 opens / closes or unlocks the door 5 based on the control signal.

With reference to FIG. 6, an example of the processing operation of the entrance / exit management system of FIG. 5 will be described. Here, the user takes be described as an example the processing operation when moving through the overlapping communication range A ₁₂ from the first reader communication range A ₁ to the second reader communication range A _2.

(Ii) First, at S21, the user wearing the transponder 3, approaches from the entry area side door, enters the first reader communication range A _1. Since the question signal including the question ID ₁ is continuously transmitted in the first reader communication range A ₁ , the responder 3 that has entered the first reader communication range A ₁ uses the question ID ₁ in the first communication unit 14. Is received (S22).

(B) At S23, the responder 3 uses the second communication unit 15 to transmit a response signal including the question ID 1 and the user ID 16 to the first reader 1 or the second reader 2. The second communication unit 13a, 13b is, for having a first reader communication range _{A 1} and the second communication range encompassing the reader communication range _{A 2,} the first and second reader 1 and 2, the communication The response signal transmitted from the range by the responder 3 can be received using the second communication units 13a and 13b. Here, the description continues when the first reader 1 receives the response signal.

  (Ha) In S24, the first reader 1 recognizes the responder 3 based on the user ID 16 included in the response signal. That is, it is detected that the user who has the responder 3 having the user ID 16 has entered the room entry area.

  (Ii) In S25, the interface unit 11a of the first reader 1 transmits the user ID 16 included in the response signal to the entrance / exit determination unit 4.

  (E) Then, in S26, the entry / exit determination unit 4 determines whether or not the user ID 16 included in the response signal is stored in the database 22. If user ID 16 is not stored in database 22 (NO in S26), the process proceeds to S27, and the process proceeds as an unauthorized user. Alternatively, a control signal for opening or unlocking the door 5 is not output to the door opening / closing control unit 21.

  (F) On the other hand, when user ID 16 matches the user ID stored in database 22 (YES in S26), entry / exit determination unit 4 opens or unlocks door 5 with respect to door opening / closing control unit 21. A control signal to that effect is output. In step S28, the first reader 1 transmits a recognition completion signal indicating that the recognition has been completed to the responder 3 using the second communication unit 13a. This recognition completion signal is received using the communication unit 15.

In (and) S29, the door opening / closing control unit 21 opens / closes or unlocks the door 5 based on the control signal. At S30, the user enters the first reader communication range _{A 1} to overlap the communication range _{A 12.} In this overlapping portion (overlapping communication range A ₁₂ ), the interrogation signal from the first reader 1 and the interrogation signal from the second reader 2 are mixed and interfere with each other. Any interrogation signal of the first and second readers 1 and 2 cannot be recognized, and the signal cannot be received (S31).

(Chi) Thereafter, at S32, the user enters the overlapping coverage _{A 12} to the second reader communication range _{A 2.} Then, since the question signal including the question ID ₂ is continuously transmitted in the second reader communication range A ₂ , the responder 3 that has entered the second reader communication range A ₂ 14, the question signal including the question ID 2 is received (S33).

(Ri) At S 34, the responder 3 uses the second communication unit 15 to transmit a response signal including the question ID 2 and the user ID 16 toward the first reader 1 or the second reader 2. The second communication unit 13a, 13b is, for having a first reader communication range _{A 1} and the second communication range encompassing the reader communication range _{A 2,} the first and second reader 1 and 2, the communication The response signal transmitted from the range by the responder 3 can be received using the second communication units 13a and 13b. Here, the description is continued for the case where the second reader 2 receives the response signal.

  (Nu) In S35, the second reader 2 recognizes the responder 3 by the user ID 16 included in the response signal. That is, it is detected that the user who has the responder 3 having the user ID 16 has entered the exit area. In S36, the interface unit 11b of the second reader 2 transmits the user ID 16 included in the response signal to the entry / exit determination unit 4.

  (Ru) Then, in S37, the entry / exit determination unit 4 determines whether or not the user ID 16 included in the response signal is stored in the database 22. If user ID 16 is not stored in database 22 (NO in S37), the process proceeds to S38, and the process proceeds as an unauthorized user. For example, an alarm for notifying an intruder of an unauthorized user is notified.

  On the other hand, if user ID 16 matches the user ID stored in database 22 (YES in S37), the process proceeds as a legitimate user. In step S39, the second reader 2 transmits a recognition completion signal indicating that the recognition has been completed to the responder 3 using the second communication unit 13b. This recognition completion signal is received using the communication unit 15.

  With the above processing procedure, the user's exit operation from the entrance area to the exit area is detected. In addition, by performing the reverse procedure described above, the user's entry operation from the exit area to the entry area is detected.

  In addition, although the case where user authentication is performed twice in the entrance area (S27) and the exit area (S37) has been described, only one of them may be performed.

  The entry / exit determination unit 4 authenticates the user ID with reference to the database 22 and opens / closes or unlocks the door, thereby permitting only an entry / exit operation only for a user having the right entry / exit right. Entry / exit movement can be prohibited.

(Other embodiments)
As described above, the present invention has been described by two embodiments. However, it should not be understood that the description and the drawings, which form a part of this disclosure, limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. That is, it should be understood that the present invention includes various embodiments not described herein. Therefore, the present invention is limited only by the invention specifying matters according to the scope of claims reasonable from this disclosure.

It is a block diagram which shows the structure of the entrance / exit management system concerning the 1st Embodiment of this invention. It is the model which shows the example of installation of the entrance / exit management system of FIG. 1, and is the figure which looked at the door from the side. It is the model which shows the example of installation of the entrance / exit management system of FIG. 1, and is the figure which looked at the door from the top. It is a flowchart which shows an example of the processing operation of the entrance / exit management system of FIG. It is a block diagram which shows the structure of the entrance / exit management system concerning the 2nd Embodiment of this invention. It is a flowchart which shows an example of the processing operation of the entrance / exit management system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... 1st reader 2 ... 2nd reader 3 ... Response machine 4 ... Entrance / exit judgment part 5 ... Door 11a, 11b ... Interface part 12a, 12b ... 1st communication part (1st communication means)
13a, 13b ... 2nd communication part (2nd communication means)
14 ... 1st communication part 15 ... 2nd communication part 16 ... User ID
21 ... Door opening / closing control part 22 ... Database 23 ... Interface part

Claims (2)

A question that is in the vicinity of a boundary that separates two areas, each having a different communication area as a main communication range, and each communication range partially overlapping on the boundary, and including a different question ID for each communication range First communication means for transmitting a signal at the same first communication frequency;
Second communication means having a second communication range including the respective communication ranges and receiving a response signal to the interrogation signal at a second communication frequency different from the first communication frequency;
When the question signal is received within the communication range of the first communication means, the response signal including the user ID included in the question signal is included in the second response signal. A transponder transmitting at a communication frequency;
When the second communication means receives two response signals having different question IDs but the same user ID, the communication of the first communication means is performed according to the reception order of the question IDs included in the respective response signals. An entry / exit management system comprising: an entry / exit determination unit that determines entry into and exit from one area of the range. A door disposed at the boundary;
A door opening / closing control unit for controlling opening / closing or locking / unlocking of the door;
A database in which a user ID of the responder permitted to enter and leave through the door is stored;
The entry / exit determination unit determines whether the user ID included in the response signal is stored in the database when the second communication unit receives the response signal, and stores the user ID in the database. 2. The entrance / exit management system according to claim 1, wherein when the user ID matches, the control signal for opening or unlocking the door is output to the door opening / closing control unit.

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