JP4873294B2 - Admission management device - Google Patents

Description

  The present invention relates to an entrance management device, and more particularly to an entrance management device provided with means for automatically adjusting the output level of a radio wave for reading a non-contact type IC tag.

  Conventionally, IC tags and IC cards are used for employee ID cards and student ID cards. Entry and exit of employees and students is managed by reading information on IC tags and IC cards with tag readers and card readers set up at companies and schools. By linking with the electronic lock, the security function is also achieved. It is necessary for the card reader to read the IC card, which is troublesome for the user. In addition, when there are a small number of card readers, there may be a queue in front of the card readers in the morning and evening hours when entrance and exit are concentrated. Also, since authentication is only performed for IC tags and IC cards, it cannot be determined whether the user is using it. In addition, if you follow the person who opened the electronic lock with an IC tag or card, it will be possible to pass, so there is an insufficient security function when using it for an electronic lock or gate.

  The entrance / exit detection system already proposed by the present inventors will be briefly described. In this system, tag readers / writers are spread on a floor in a matrix. The pressure sensor is laid out on the floor in the form of a matrix corresponding to the tag reader / writer. An IC tag with tag information and owner's physical data stored in EEPROM is attached to the ankle of the person entering or leaving the room. When the IC tag passes the position of the tag reader / writer, the tag information is read out, the position is detected, and the tag information is authenticated by the authentication means. By comparing the detection data of both the pressure sensor and the IC tag reader / writer, it is possible to grasp the progress method of the person entering and leaving the room and the suspicious person. The door is opened only when the number of IC tags read by the IC tag reader / writer matches the number of people reading the pressure sensor. In such a system, it is possible to save the labor of entering and leaving the room so that the tag reader / writer can read the IC card or IC tag. Security functions are improved because people who do not have an IC card or IC tag can be detected. Furthermore, by adding physical information to the tag information and detecting and collating the weight, height, etc., the accuracy of identification can be improved. Below are some examples of prior art related to this.

  The “data identification device” disclosed in Patent Document 1 is a data identification device that can reduce the cost of the identification tag and can easily manage the identification tag by the manufacturer of the device. A nonvolatile memory is provided in the identification tag. A security data storage area and an identification data storage area in which security data and identification data are written are provided in the memory. It communicates with the identification tag in a non-contact manner, reads the security data, and compares and collates with its own in the identification tag verification unit. In the reader / writer unit provided separately, the control unit holding predetermined security data writes the security data in the initialized identification tag and reads it.

  The RFID system for preventing dementia patients by RFID disclosed in Patent Document 2 eliminates the difficulty of monitoring by the staff for dementia patients with hemorrhoids and the difficulty of obliging to carry sensors. It is a system that reliably manages the action at the moment of going out using the RFID system. ID tag IC circuits and coils are protected with soft materials. The antenna part of the reader / writer is separated from the reader / writer and protected with resin or the like. It enables installation in places that were not possible in the past. Manage people who want to go outside and outside. By installing elastic ID tags on shoes, there is no sense of wearing security devices. ID management can be performed reliably at low cost.

  The “pressure sensor sheet” disclosed in Patent Document 3 is a pressure sensor sheet that can be easily sealed without causing damage to the sensor and can be attached without causing wrinkles even in a curved shape. is there. The pressure sensor sheet is formed by bonding two base films together with a temperature-sensitive adhesive. In the pressure sensor sheet, at least two base film portions attached to the curved surface portion are bonded to each other with a temperature-sensitive adhesive. In the pressure sensor sheet, the two base film portions constituting the pressure-sensitive portion are bonded together with a temperature-sensitive adhesive.

The "wireless communication medium processing device" disclosed in Patent Document 4 is very easy to perform entry / exit authentication using wireless communication media at a large number of doorways and to recognize wireless communication media randomly existing in a wide area. This is a wireless communication medium processing device realized with a simple configuration. A plurality of antennas are provided. Some antennas are connected to the transmit distributor and receive combiner. The detection signal after detection is input from the antenna to the reception synthesizer. A read / write unit connected to the transmission distributor and the reception synthesizer reads / writes data from / to the wireless communication medium via the antenna.
JP 2000-285209 A JP 2002-319083 A JP 2004-333273 A JP-A-2005-244445

  However, the conventional entrance / exit detection system using a floor-mounted IC tag reader / writer has the following problems. Since the radio wave output level of the IC tag reader / writer is constant, if the floor where the IC tag reader / writer is installed gets wet when it rains, the radio wave output from the IC tag reader / writer will be weakened and the IC tag information cannot be read. Sometimes. When the radio wave output level of the IC tag reader / writer is increased so that it can be read even when the floor is wet, the radio wave becomes too strong when the floor is dry, which may adversely affect the surrounding electronic devices. There is a possibility of destruction.

  An object of the present invention is to solve the above-described conventional problems so that even if the floor on which the IC tag reader / writer is installed is wet during rain, the information on the IC tag can be read without adversely affecting the environment. It is to ensure that suspicious persons can be detected.

The invention according to claim 1 comprising an entrance management apparatus, and in the matrix and the IC tag reader-writer paved floor, in correspondence with the IC tag reader-writer for reading the IC tag of the non-contact scheme visitors GaSo wear a pressure sensor laid on the floor in the matrix, of the IC tag reader writer laid on the floor in the matrix so as to detect the visitors in the pressure sensor, the IC tag reader-writer of a portion does not detect the IC tag Means for raising the radio wave output level by one step, and means for raising the radio wave output level of the IC tag reader / writer by one step is adjusted to raise the radio wave output level of the IC tag reader / writer by one step. The process is performed until it can be read by a tag reader / writer.
According to a second aspect of the invention an entrance management apparatus according to claim 1, and a gate having a gate IC tag reader-writer on both sides of the column in order to read the IC tag detects the visitor by the pressure sensor even if not read the IC tag by the gate is characterized by having a means for returning the radio output level of the IC tag reader writer to the level immediately before.
A third aspect of the present invention is the admission management device according to the first aspect, wherein the IC tag reader / writer is in a state where it can be read even if the intensity level of the output radio wave of the IC tag reader / writer is constant over a predetermined time. Means is provided for lowering the radio wave output level by one step.

  With the above configuration, even when the IC tag reader / writer's radio waves are absorbed and weakened due to rain, the radio waves absorbed can be increased by increasing the radio wave output level when reading fails (not detected, etc.). Since supplementary radio waves reach normal strength, IC tags can be read normally, so that suspicious persons can be detected reliably. In addition, by having a gate IC tag reader / writer on both sides that allows the IC tag to be read at all times without getting wet, it is possible to determine that a visitor who does not have an IC tag has passed. The radio wave output of the IC tag reader / writer installed in will not be higher than necessary.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to FIGS. 1 and 2. FIG.

  In the embodiment of the present invention, the IC tag reader / writer is spread on the floor in a matrix, the pressure sensor is spread on the floor in correspondence with the IC tag reader / writer, and even if the weight is detected by the pressure sensor, the IC tag reader / writer When the IC tag reader cannot be read, the radio wave output of the IC tag reader / writer is increased by one step, and even if the weight is detected by the pressure sensor, the IC tag is not detected by the gate having the IC tag reader / writer for the gate on both sides. This is an admission management device that returns the radio wave output of the tag reader / writer to the previous level.

  FIG. 1A is a conceptual diagram of an admission management device according to an embodiment of the present invention. FIG. 1B is a conceptual diagram of an IC tag that can be attached to the ankle. In FIG. 1, an IC tag reader / writer 1 is an IC tag reader / writer arranged in a matrix and spread on the floor. The pressure sensor 2 is a pressure sensor that is arranged in a matrix on the floor in correspondence with the IC tag reader / writer. The tag information / pressure sensor information detection unit 3 is means for acquiring and processing tag information and pressure sensor information. LAN 4 is a network. The center 5 is a monitoring center. The IC tag holding device 6 is an anklet type device that holds an IC tag. FIG. 2 is a diagram for explaining a method of adjusting the radio wave output of the IC tag reader / writer.

  The function and operation of the admission management device in the embodiment of the present invention configured as described above will be described. First, an overview of the functions of the admission management device will be described with reference to FIG. As shown in FIG. 1A, an IC tag reading unit is installed on the floor. That is, the IC tag reader / writer 1 is spread on the floor so that the IC tag can be read when the IC tag passes over the reading point of the IC tag reader / writer 1. The IC tag reader / writer 1 is arranged in a matrix and spread on the floor, so that the current position of the owner of the IC tag can be detected. Corresponding to the IC tag reader / writer 1, the pressure sensors 2 are arranged in a matrix and spread on the floor. Based on the signal from the pressure sensor 2, it is possible to detect where a person is. Therefore, the total number of people is also known.

  As shown in FIG. 1B, an anklet type IC tag holding device 6 is used so that the IC tag can be attached to the ankle. Insert the IC tag into the IC tag insertion part and connect the joint part to the ankle. In addition to tag information, the weight data of the owner is stored in the EEPROM of the IC tag.

  The tag information / pressure sensor information detection unit 3 always reads and processes read information from the IC tag reader / writer 1 and detection data from the pressure sensor 2. Instead of operating all the IC tag reader / writers 1 simultaneously, the reading operation is performed so as to scan in a certain direction. Corresponding to this operation, the pressure sensor 2 performs the same operation. The tag information / pressure sensor information detection unit 3 receives the read information of the IC tag reader / writer 1 and authenticates the tag information. Further, the current position of the visitor is acquired from the position of the IC tag reader / writer 1 that has read the IC tag. Thereafter, the tag information registered in advance is compared with the acquired tag information to confirm whether or not the person is a suspicious person. Further, the current position and weight data of the attendee are acquired from the weight detection signal from the pressure sensor 2. By verifying the weight information of the IC tag reader / writer 1 and the weight data of the pressure sensor 2, the person is confirmed.

  By collating the position information acquired from the IC tag reader / writer 1 with the position information from the pressure sensor 2, it is possible to identify the location where the weight detection signal is received from the pressure sensor 2 without acquiring the tag information. The position of the person who has the tag and the person who doesn't have it can be specified. If the tag information cannot be read but the weight is detected by the pressure sensor 2, the tag information read from the IC tag does not match the pre-registered tag information, or the weight information and the pressure sensor 2 If the detected weight data does not match, the tag information / pressure sensor information detection unit 3 transmits the abnormal data and the abnormal event occurrence notification to the center 8 via the LAN 4 as an abnormal event occurrence. On the side of the center 8 that has received the abnormal data, an alarm is given to a monitor or the like so as to confirm the situation on the site based on the position data where the abnormality has occurred.

  In this way, it is possible to save the trouble of having the visitors read the IC tag or IC card. In addition, it is possible to manage where the owner of the IC tag is, and to identify the person who has the IC tag from the person who does not have the IC tag.

  Next, a method for adjusting the radio wave output of the IC tag reader / writer will be described with reference to FIG. As shown in FIG. 2A, a pressure sensor and an IC tag reader / writer are spread in a matrix on the floor. In the middle, a gate having a gate IC tag reader / writer is provided on both sides. There is a door on the left side of FIG. 2 and a passage on the right side. Visitors proceed as shown by the arrows in the figure. When a visitor's shoes are wet, such as when it rains, the IC tag reader / writer on the right gets wet more strongly, and the wetter the less it goes to the left. Therefore, as the IC tag reader / writer on the right side, more output radio waves are absorbed by moisture, and the radio waves reaching the IC tag become weaker. When the radio wave output of the IC tag reader / writer is kept constant, when the floor gets wet with water during raining or the like, as shown in FIG. At locations that cannot be read, the output radio waves of the IC tag reader / writer are absorbed by water, and the radio waves that reach the IC tag are weaker than those that can be read.

  As shown in FIG. 2 (c), the radio wave output level of the IC tag reader / writer at a portion that cannot be read although the weight of the visitor is detected by the pressure sensor is increased by one step. The level of one stage is determined according to the state of the place where the IC tag reader / writer is installed. Even if the floor gets wet, it should be possible to read it enough if it is raised about 5 steps. When the level is increased by one step, the IC tag can be read by the three IC tag reader / writers in the center of the figure. The IC tag cannot be read in the right part. Therefore, as shown in FIG. 2 (d), the radio wave output level of the IC reader / writer at the part that cannot be read is increased by another level. Then, it can be read at three places on the right side of the central portion. In this way, adjustment is performed so that all IC readers / writers can finally read.

  However, there are cases where visitors cannot read because the IC tag is not attached. Therefore, the pressure sensor can detect the weight, but the IC tag reader / writer cannot read the IC tag at all, and the gate IC reader / writer provided on both sides of the gate cannot read the IC tag, as shown in FIG. Thus, the raised radio wave output level is returned to the previous level. In this way, by raising the radio wave output level even though the IC tag is not attached, it is possible to return to a level that may have been read if the IC tag was originally attached. Moreover, it is possible to prevent the radio wave output from being raised excessively and adversely affecting the environment.

  When the moisture on the floor dries and the absorption of the output radio waves of the IC tag reader / writer decreases, the radio waves that reach the IC tag become stronger. If it becomes too strong beyond the readable level, the environment will be adversely affected, so the output radio wave of the IC tag reader / writer must be weakened. Therefore, if the state in which reading is possible without increasing the intensity level of the output radio wave of the IC tag reader / writer continues for a certain time or longer, the intensity level of the output radio wave of the IC tag reader / writer is lowered by one step. If it is still readable, it waits for a certain period of time and goes down one step. If an unreadable location appears, the level is increased by one level. By repeating this, the intensity level of the output radio wave of the IC tag reader / writer can always be maintained at a readable level.

  As described above, in the embodiment of the present invention, the admission control device is arranged on the floor with the IC tag reader / writer in a matrix, and the pressure sensor is arranged on the floor in a matrix corresponding to the IC tag reader / writer. If the IC tag reader / writer cannot read the IC tag even if the weight is detected, the radio wave output of the IC tag reader / writer is increased by one level, and even if the weight is detected by the pressure sensor, the gate has the IC tag reader / writer for the gates on both sides. When the IC tag is not detected, the radio wave output of the IC tag reader / writer is returned to the previous level, so even if the IC reader / writer's radio wave is absorbed and weakened, the radio wave output level is excessively increased. The IC tag can be read normally without raising it. In addition, by having a gate IC tag reader / writer on both sides that allows the IC tag to be read at all times without getting wet, it is possible to determine that a visitor who does not have an IC tag has passed. The radio wave output of the IC tag reader / writer installed in will not be higher than necessary.

  The admission management device of the present invention is most suitable as an admission management device that can automatically adjust the radio wave output level of an IC tag reader / writer.

It is a conceptual diagram of the entrance management apparatus in the Example of this invention. It is a figure explaining the method to adjust the radio wave output of the IC tag reader / writer of the entrance management apparatus in the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... IC tag reader / writer, 2 ... Pressure sensor, 3 ... Tag information and pressure sensor information detection part, 4 ... LAN, 5 ... Center, 6 ... IC tag holding device.

Claims (3)

And IC tag reader writer laid on the floor in the matrix in order to read the IC tag of the non-contact scheme visitors GaSo wear, a pressure sensor laid in the matrix on the floor in correspondence with the IC tag reader-writer, the A means for increasing the radio wave output level of the IC tag reader / writer at a location where the IC tag is not detected among the IC tag reader / writers that are detected by a pressure sensor and laid on the floor in the form of a matrix ;
The means for raising the radio wave output level of the IC tag reader / writer by one step performs adjustment to raise the radio wave output level of the IC tag reader / writer by one step until all the IC tag readers / writers can read the IC tag. apparatus.   A gate having IC tag reader / writers for gates on both pillars for reading the IC tag, and if the IC tag cannot be read by the gate even if a visitor is detected by the pressure sensor, the IC tag reader / writer The admission management device according to claim 1, further comprising means for returning the radio wave output level to the previous level. 2. A means for lowering the radio wave output level of the IC tag reader / writer by one step when a state in which reading is possible even if the intensity level of the output radio wave of the IC tag reader / writer continues for a predetermined time or longer is provided. The admission management device described.

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