JP5157986B2 - Non-contact IC medium communication system, communication apparatus, non-contact IC medium communication method, and program thereof - Google Patents

Description

  The present invention relates to a non-contact IC medium communication system, a communication device, a non-contact IC medium communication method, and a program thereof for communicating with a non-contact IC medium.

  2. Description of the Related Art Conventionally, there has been known a communication system that enables non-contact communication with a non-contact IC medium by transmitting and receiving radio waves with the non-contact IC medium using a dedicated communication device.

  Such a communication system is widely used in a so-called security system that permits / restricts the entry / exit of management objects (including people and articles) at a predetermined facility, and a location management system that determines the location of the management object. It has been adopted.

  However, in recent years, it has been pointed out that radio waves transmitted and received when communicating between a non-contact IC medium and a communication device may affect the operation of a medical device such as a cardiac pacemaker. For this reason, the owner of the cardiac pacemaker may have anxiety that the above-described communication system is adopted around him / her.

  In addition, in recent years, various theories about the effects of radio waves (electromagnetic waves) on human health have been published, and for example, parents with infants have concerns about the effects of electromagnetic waves on their children. There is also the fact that it is. For this reason, parents who have infants and the like may also be uneasy about adopting the communication system described above in the vicinity, like the owner of the cardiac pacemaker.

  Furthermore, from such a background, those who are considering adopting the above-mentioned communication system tend to hesitate to adopt the communication system in consideration of those who are concerned about the influence of radio waves.

  By the way, as a technique considering the influence of radio waves on the owner of the cardiac pacemaker, for example, there is one disclosed in Patent Document 1 below. In the following Patent Document 1, a system is disclosed in which a mobile phone serving as a radio wave transmission source is controlled using non-contact communication between a non-contact IC medium and a communication device.

  Specifically, the mobile phone terminal owner is allowed to wear a non-contact IC medium, while the mobile phone terminal is provided with a communication device.

  Then, when the owner of the mobile phone terminal approaches the owner of the cardiac pacemaker, the non-contact IC medium is brought close to the communication device and non-contact communication is performed by the owner of the mobile phone terminal. Thus, the control information stored in the non-contact IC medium is read by the communication device so that power supply stop control and radio wave transmission prohibition control can be executed on the mobile phone terminal.

JP 2007-96557 A

  However, the technique disclosed in Patent Document 1 controls radio wave transmission from a mobile phone terminal used in an existing wireless communication system (nurse call system) using a non-contact IC medium communication system. Therefore, it does not control transmission / reception of radio waves in the non-contact IC medium communication system.

  Furthermore, in the technology disclosed in Patent Document 1, as described above, the owner of the mobile phone terminal serving as the radio wave transmission source must intentionally communicate the communication device with the non-contact IC medium according to his / her own judgment. In this case, there is a problem in the certainty of control.

  In addition, the technique disclosed in Patent Document 1 can be realized only when a worker in a medical facility such as a doctor or a nurse knows the owner of the cardiac pacemaker in advance. In particular, in the case of facilities where an unspecified number of people come and go, for cardiac pacemaker owners, it is indistinguishable from non-owners in appearance, so determine whether the radio waves in the communication system should be controlled. Is not easy.

  In view of the above-described problems, the present invention makes it possible to easily identify a target person who should control radio waves in the system, and to give a sense of security to the target person by controlling the radio waves more reliably. An object is to provide a non-contact IC medium communication system, a communication device, a non-contact IC medium communication method, and a program thereof.

The present invention is a non-contact IC medium communication system comprising a non-contact IC medium and a communication device that communicates with the non-contact IC medium, wherein the communication apparatus communicates with the non-contact IC medium by the non-contact IC medium. with reading identification information of the IC medium, based on the identification information, a transmission level control means for reduction control the transmission level of the stop or wave radio waves transmitted to the contactless IC media from the communication device, the communication It is a non-contact IC medium communication system provided with a transmission level return operation means for returning the transmission level of the radio wave, which is stopped or reduced by the transmission level control means of the apparatus, to the transmission level before the control.

  The non-contact IC medium can be formed of a medium that can communicate in a non-contact manner and has an IC, such as an RFID tag.

  The communication device is a reader / writer device that can read information on the RFID tag or write information to the RFID tag by communication with the RFID tag, or information on the RFID tag by communication with the RFID tag. It is possible to configure with a reader device that only allows reading.

  According to the present invention, it is possible to easily identify a target person whose radio wave transmission level is to be controlled from among an unspecified number of persons possessing the non-contact IC medium based on the identification information of the non-contact IC medium. And since the transmission level of a radio wave can be reliably controlled by a communication device based on the reading result of the identification information, a sense of security can be given to the target person approaching the communication device.

  The transmission level return operation means can be constituted by a push button switch for executing a transmission level return process by an operator's pressing operation.

  As a result, as soon as it is confirmed that there is no person around the communication device including the target person, the transmission level return operation means is operated to control the transmission level of the radio wave without impairing the sense of security of the target person. You can return to the previous level.

As an aspect of the present invention, the transmission level control means may be configured to control to stop the transmission of the radio wave.
As a result, the subject can be given a stronger sense of security with respect to the non-contact IC medium communication system.

As an aspect of the present invention, the transmission level control means of the communication device includes a transmission level return control unit that increases the transmission level of the controlled radio wave stepwise over time to return to the transmission level before the control. Can be configured.

  Thereby, before the said transmission level returns to the level before control, it can earn time for the said subject to move away from a communication apparatus, and can give the said subject the feeling of relief from the communication apparatus. it can. Further, even if the subject person approaches the communication device again immediately after the transmission level return control is started, the subject's anxiety can be reduced.

As an aspect of the present invention, the non-contact IC medium can be configured as an active tag having a power supply device.
As a result, the radio wave transmission level is higher than that of a passive tag that does not include a power supply device, and the radio wave transmission distance can be increased. For this reason, even if the subject is far away from the communication device, the communication device can receive the radio wave including the identification information, and can control the transmission level of the radio wave at an earlier timing.

  As an aspect of the present invention, the non-contact IC medium includes a reception level calculation unit that calculates a reception level of a radio wave transmitted from the communication device, and a reception that notifies a reception level based on a calculation value of the reception level calculation unit. It can be set as the structure provided with the level alerting | reporting means.

The reception level notification means can be constituted by a lighting display means for notifying the reception level by a change in lighting display position, lighting color, character, etc., and this lighting display means is a semiconductor light emitting element such as an LED or an organic EL. Or other light emitting means.
Further, the reception level notification means can be constituted by a speaker device that notifies the reception level by a change in volume, sound quality, or the like.

  As a result, the subject can easily recognize the radio wave level in the vicinity of the subject, and as a result, a stronger sense of security can be obtained.

According to another aspect of the present invention, there is provided a communication device that communicates with a non-contact IC medium. The communication device reads the identification information of the non-contact IC medium by communication with the non-contact IC medium, and from the communication device based on the identification information. Transmission level control means for stopping or reducing the transmission level of the radio wave transmitted to the non-contact IC medium, the transmission level of the radio wave stopped or reduced by the transmission level control means being transmitted before control It is a communication apparatus provided with a transmission level return operation means for returning to a level.

  According to the present invention, when the predetermined identification information is read out of the identification information of the non-contact IC medium, the target person whose radio wave transmission level should be controlled from among an unspecified number of persons who possess the non-contact IC medium. It can be easily identified. And it is possible to give a sense of security to the subject approaching the communication device by surely controlling the transmission level of the radio wave based on the reading of the predetermined identification information.

  In addition, as soon as it is confirmed that there is no person around the communication device including the target person, it is possible to operate the transmission level return operation means before controlling the transmission level of the radio wave without impairing the subject's sense of security. Can be restored to the next level.

As an aspect of the present invention, the transmission level control means includes a reception level calculation unit that calculates a reception level of a radio wave received from the non-contact IC medium, a calculated value in the reception level calculation unit, and a preset threshold value And a reception level comparison unit that controls the transmission level of the radio wave based on the identification information and the comparison result of the reception level comparison unit.
Thereby, the state in which communication between the communication device and the non-contact IC medium is restricted can be suppressed to the minimum necessary.

As an aspect of the present invention, the transmission level control means may be configured to control to stop the transmission of the radio wave.
As a result, the subject can be given a stronger sense of security with respect to the non-contact IC medium communication system.

As an aspect of the present invention, the transmission level control means compares the transmission level of the radio wave with a preset threshold value, and maintains the transmission state of the radio wave based on the identification information and a comparison result with the threshold value. However, the radio wave transmission level may be controlled to be less than the threshold value.
Thereby, the state which can communicate between a communication apparatus and a non-contact IC medium can be continued, without impairing the said subject's sense of security.

As aspect of the invention, the transmission level control means, the transmission level of the control was the radio wave, a structure having a transmission level restoration control section for returning the transmission level of the previous control is increased stepwise over time be able to.
Thereby, before the said transmission level returns to the level before control, it can earn time for the said subject to move away from a communication apparatus, and can give the said subject the feeling of relief from the communication apparatus. it can. Further, even if the subject person approaches the communication device again immediately after the transmission level return control is started, the subject's anxiety can be reduced.

  As an aspect of the present invention, it may be configured to include a transmission level notifying unit that notifies the transmission level of the radio wave controlled by the transmission level return control unit.

The transmission level notification means can be constituted by a lighting display means for notifying the transmission level by a change in lighting display position, lighting color, character, etc., and this lighting display means is a semiconductor light emitting element such as an LED or an organic EL. Or other light emitting means.
Further, the transmission level notification means can be configured by a speaker device that notifies the transmission level by a change in volume, sound quality, or the like.

  Thereby, the target person can easily recognize the transmission level of the radio wave of the communication device, and as a result, can obtain a stronger sense of security.

The present invention is also a non-contact IC medium communication method for communicating with a non-contact IC medium by a communication device, wherein the communication device reads identification information of the non-contact IC medium by communicating with the non-contact IC medium. Based on the identification information, the transmission level control means of the communication device stops the transmission of the radio wave or controls to reduce the transmission level of the radio wave , and the communication level based on the operation of the transmission level return operation means. And a step of returning the radio wave transmission level stopped or reduced by the transmission level control means of the apparatus to the transmission level before the control.

  According to the present invention, it is possible to easily identify a target person whose radio wave transmission level is to be controlled from among an unspecified number of persons possessing the non-contact IC medium based on the identification information of the non-contact IC medium. And since the transmission level of a radio wave can be reliably controlled by a communication device based on the reading result of the identification information, a sense of security can be given to the target person approaching the communication device.

The present invention is also a non-contact IC medium communication program for causing a computer to execute a step of communicating with a non-contact IC medium by a communication device, wherein the communication apparatus performs non-contact by communicating with the non-contact IC medium. A step of reading the identification information of the IC medium, a step of stopping the transmission of the radio wave or reducing the transmission level of the radio wave by the transmission level control means of the communication device based on the identification information; A non-contact IC medium communication program for causing a computer to execute the step of returning the transmission level of the radio wave, which is stopped or reduced by the transmission level control means of the communication device, to a transmission level before control based on an operation. It is characterized by that.

  According to the present invention, it is possible to configure a non-contact IC medium communication system that installs a non-contact IC medium communication program in a computer and gives a sense of security to the subject approaching the communication device.

  According to the present invention, a non-contact IC medium that makes it possible to easily identify a subject who should control radio waves in the system and to give the subject a sense of security by controlling the radio waves more reliably. A communication system, a communication apparatus, a non-contact IC medium communication method, and a program thereof can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic which shows the non-contact IC medium communication system which concerns on 1st Embodiment of this invention, Comprising: (a) The schematic which shows the case where the passerby who is the owner of a cardiac pacemaker is away from the reader / writer apparatus, ( b) Schematic showing a case where a passerby approaches the reader / writer device. The block diagram corresponding to FIG. The flowchart which shows operation | movement of a non-contact IC medium communication system. Schematic which shows the non-contact IC medium communication system which concerns on 3rd Embodiment of this invention. FIG. 7 is a block diagram corresponding to FIG. 6. The figure which shows the example of a display of LED. The flowchart which shows operation | movement of a non-contact IC medium communication system. (A) The schematic which shows the non-contact IC medium communication system which concerns on 4th Embodiment of this invention, (b) The schematic which shows the non-contact IC medium communication system which concerns on 1st Embodiment of this invention. FIG. 11 is a block diagram corresponding to FIG. The figure which shows the example of a display of LED. Schematic which shows the non-contact IC medium communication system which concerns on 5th Embodiment of this invention. FIG. 14 is a block diagram corresponding to FIG. 13. Schematic which shows the whereabouts management system to which the non-contact IC medium communication system concerning 7th Embodiment of this invention is applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, the first embodiment shown in FIGS. 1 to 3 will be described. FIG. 1 is a schematic diagram showing a contactless IC medium communication system (hereinafter abbreviated as a communication system) 1 according to the first embodiment of the present invention, and FIG. 2 is a block diagram corresponding to FIG. .

  As shown in FIGS. 1 and 2, the communication system 1 according to the present embodiment includes an RFID tag as a non-contact IC medium possessed by a reader / writer device 30 as a communication device and a passerby P1 who has a cardiac pacemaker 50. (Hereinafter abbreviated as a tag) 40.

  The reader / writer device 30 includes a main body 30a and an antenna 31, and can communicate with the tag 40 in a non-contact manner by transmitting and receiving radio waves Wr and Wt to and from the tag 40. The information of the tag 40 can be read and information can be written to the tag 40 by communication with the tag 40 described above. The antenna 31 of the reader / writer device 30 is provided with a return operation button 32 described later.

  On the other hand, the tag 40 is attached to an annular neck string 2 as shown in FIG. 1, for example, and the passerby P1 hangs the tag 40 from the neck by hanging the neck string 2 on his / her neck. It is possessed in the state. However, it is not necessarily limited to this, For example, this tag 40 may be incorporated in the cardiac pacemaker 50. In this case, the operation of the cardiac pacemaker 50 is not affected.

  Further, with respect to the reader / writer device 30, the antenna 31 generates a radio wave Wr and transmits the radio wave Wr toward the tag 40 of the passerby P 1. The radio wave Wt including the identification information is received.

  Here, the main body 30a of the reader / writer device 30 includes a control unit 33 and a storage unit 34, as shown in FIG. Among these, the control part 33 controls transmission / reception of the radio waves Wr and Wt by the antenna 31. The storage unit 34 stores a transmission level control ID, which will be described later, in addition to a program for the control unit 33 to mainly execute a control operation. In the present embodiment, for example, a 5-digit number “00000” is stored as the transmission level control ID.

  By the way, in the communication system 1, the level of the radio wave Wr around the tag 40 can be estimated based on the reception level when the antenna 31 receives the radio wave Wt transmitted from the tag 40. Therefore, in the present embodiment, the control unit 33 (see FIG. 2) includes a reception level calculation unit 33a that calculates a reception level when the antenna 31 receives the radio wave Wt transmitted from the antenna 41 of the tag 40. . In the storage unit 34, the reception level of the radio wave Wt received by the antenna 31 when the tag 40 receives the maximum level of radio wave Wr that can be accepted by the cardiac pacemaker 50 possessed by the passerby P1 shown in FIG. Remember as.

  In this embodiment, the tag 40 is a so-called passive tag that does not include a power supply device such as a battery, and mainly includes a control unit 42 and a storage unit 43 in addition to the antenna 41. Among these, the control unit 42 controls the radio wave Wt transmitted from the antenna 41 when the antenna 41 receives the radio wave Wr transmitted from the antenna 31 of the reader / writer device 30.

  The storage unit 43 stores an ID code as identification information assigned in advance, in addition to a program for the control unit 42 to mainly execute a control operation. This ID code is a code for identifying the passerby P1 (tag 40). In the case of the passerby P1, as an ID code common to those who have the cardiac pacemaker 50 in the storage unit 43, for example, A 5-digit number “00000” is assigned.

  The reader / writer device 30 normally transmits a radio wave Wr from the antenna 31 so as to perform non-contact communication with the tag 40. Here, when the passerby P1 carrying the tag 40 approaches the reader / writer device 30 (antenna 31), the control unit 42 is activated in the tag 40 by the antenna 41 receiving the radio wave Wr.

  At this time, the control unit 42 reads the ID code from the storage unit 43 and transmits the radio wave Wt including information related to the ID code from the antenna 41 to the antenna 31 of the reader / writer device 30.

  In the reader / writer device 30, when the antenna 31 receives the radio wave Wt from the tag 40, the control unit 33 collates the read ID code with the transmission level control ID “00000” stored in the storage unit 34. When the read ID code matches the transmission level control ID, the reception level of the radio wave Wt calculated by the reception level calculation unit 33a is compared with the reception level threshold value stored in the storage unit 34. ing. Here, when the reception level is less than the threshold, the transmission state of the radio wave Wr from the antenna 31 is maintained as shown in FIGS. 1 (a) and 2 (a).

  However, when the passerby P1 (tag 40) approaches the reader / writer device 30 as shown in FIGS. 1B and 2B and the reception level of the radio wave Wt at the antenna 31 reaches the threshold value, The transmission of the radio wave Wr is stopped based on the fact that the ID code read from the received radio wave Wt is “00000”. In each figure such as FIG. 1 (b) and FIG. 2 (b), the state in which the transmission of the radio wave Wr is stopped is schematically indicated by a two-dot chain line arrow. In each figure, the radio waves Wr, Wt The transmission / reception level is expressed by the thickness of the arrow.

  Further, in the present embodiment, when the transmission of the radio wave Wr from the antenna 31 is stopped, the administrator of the communication system 1 or the like can depress the return operation button 32 to release the transmission stop state of the radio wave Wr. The transmission level of the radio wave Wr can be restored to the level before the control.

Next, the operation of the communication system 1 according to this embodiment will be described with the flowchart shown in FIG.
At normal time, in the reader / writer device 30, the control unit 33 controls the antenna 31 to transmit a radio wave Wr for communicating with the tag 40 (step S1). Here, if the passerby P1, that is, the tag 40 is not approaching the reader / writer device 30 (step S2: NO), the process returns to step S1, while the tag 40 approaches the reader / writer device 30 (step S2). : YES), the tag 40 receives the radio wave Wr (step S3), and the control unit 42 of the tag 40 transmits the radio wave Wt including information related to the ID code toward the antenna 31 (step S4).

  Here, the control unit 33 of the reader / writer device 30 reads the ID code of the tag 40 from the radio wave Wt received by the antenna 31 in step S5, and the read ID code is previously stored in the storage unit 34 in step S6. It is determined whether or not the stored transmission level control ID is “00000”. Here, when the read ID code is not the transmission level control ID (step S6: NO), the process returns to step S1 and the processes of steps S1 to S6 are repeated.

  On the other hand, when it is the transmission level control ID (step S6: YES), the reception level calculation unit 33a of the control unit 33 of the reader / writer device 30 reads the threshold value from the storage unit 34 and transmits the radio wave Wt transmitted from the tag 40. Is compared with the threshold value (step S7).

  Here, when the reception level is equal to or higher than the threshold (step S7: YES), the control unit 33 controls the antenna 31 to stop the transmission of the radio wave Wr (step S8).

  Next, the control unit 33 determines whether or not the return operation button 32 has been operated by the administrator or the like (step S9). At this time, if the return operation button 32 is not operated (step S9: NO), the control unit 33 returns to step S8, while if the return operation button 32 is operated (step S9: YES), the antenna 31 After the transmission of the radio wave Wr is resumed and the transmission level is returned to the level before the control (step S10), the process returns to the step S1 again.

  On the other hand, when the reception level is lower than the threshold value in step S7 (step S7: NO), the process returns to step S1, and the transmission state of the radio wave Wr from the antenna 31 is continued. In step S7, the processes in steps S1 to S7 are repeated until the reception level is equal to or higher than the threshold value.

  As described above, in the present embodiment, the ID code is stored in the storage unit 43 of the tag 40 as the identification information assigned to the tag 40. In particular, in the case of the passerby P1 who is the owner of the cardiac pacemaker 50, the cardiac pacemaker An ID code “00000” common to 50 owners is stored.

  The storage unit 34 of the reader / writer device 30 stores the same ID as the common ID code in advance as a transmission level control ID. When the common ID code is read, the radio wave Wr is transmitted from the antenna 31. Is supposed to stop.

  Here, the passerby P1 may be anxious about the influence of the radio wave Wr on the cardiac pacemaker 50 owned by the passerby P1. For this reason, when the passerby P1 approaches the reader / writer device 30, if the transmission level of the radio wave Wr transmitted from the antenna 31 is appropriately controlled, the passerby P1 is given a sense of security. It is thought that you can.

  In the present embodiment, based on the ID code “00000” as identification information stored in the tag 40, a passerby P1 who is a target person whose transmission level of the radio wave Wr should be controlled is easily selected from an unspecified number of passersby. Can be identified. Since the transmission level of the radio wave Wr transmitted from the antenna 31 can be reliably controlled based on the ID code, a sense of security can be given to the passerby P1 approaching the reader / writer device 30.

  Further, as described above, by stopping the radio wave Wr transmitted from the antenna 31 based on the reading of the ID code “00000”, the passerby P1 can be given a stronger sense of security with respect to the communication system 1. .

  By the way, as described above, in recent years, there is a concern about the influence of radio waves transmitted and received in the communication system on the cardiac pacemaker, but in reality, when the surrounding radio wave level is less than a predetermined level, There may be little or little impact on operation.

  In the present embodiment, the reception level of the radio wave transmitted from the tag 40 is compared with the preset threshold value, and the transmission of the radio wave Wr is stopped only when the reception level is equal to or higher than the threshold value. A state in which communication between the writer device 30 and the tag 40 is restricted can be suppressed to a necessary minimum.

  For this reason, as shown in FIG. 1A, when the passerby P1 moves far away from the reader / writer device 30, the radio wave level around the cardiac pacemaker 50 does not affect the operation of the cardiac pacemaker 50. Occasionally, when another passerby P2 who is a non-owner of the cardiac pacemaker 50 who has the tag 40 'approaches the reader / writer device 30, the passerby P2 is in contact with the reader / writer device 30 and the tag 40'. Non-contact communication between them can be performed.

  However, the present invention is not necessarily limited to this. In the case where consideration is given to the passerby P1, for example, when the ID code “00000” is read, transmission of the radio wave Wr from the antenna 31 is performed. May be stopped immediately.

  By the way, when the passerby P1 deviates from the transmission range of the radio wave Wr transmitted from the antenna 31 of the reader / writer device 30, the transmission of the radio wave Wr from the antenna 31 can be resumed.

  Therefore, as soon as it is confirmed that there is no person around the reader / writer device 30 including the passerby P1, the return operation button 32 is operated so that the transmission level of the radio wave Wr can be set without impairing the sense of security of the passerby P1. It is possible to return to the level before the control. And the passerby who came later can return the communication system 1 to the usable state.

  In the present embodiment, the return operation button 32 is provided in the reader / writer device 30, but the present invention is not necessarily limited thereto. For example, a communication terminal device such as a personal computer may be connected to the reader / writer device 30, and transmission of the radio wave Wr may be resumed by performing an appropriate input operation on the communication terminal device.

(Second Embodiment)
In the first embodiment described above, when the reader / writer device 30 reads the ID code of the tag 40 possessed by the passerby P1 who is the owner of the cardiac pacemaker 50, the transmission of the radio wave Wr from the antenna 31 is stopped. However, the present invention is not necessarily limited to this.

  For example, while maintaining the state in which the radio wave Wr is transmitted from the antenna 31 of the reader / writer device 30, the transmission level of the radio wave Wr to a level at which the influence of the passerby P1 on the operation of the cardiac pacemaker 50 is small or hardly considered. May be reduced.

  In this embodiment, when the reader / writer device 30 reads the ID code “00000” from the radio wave Wt transmitted from the tag 40, when the transmission level of the radio wave Wr is equal to or higher than a preset threshold, The transmission level of the radio wave Wr is reduced from the normal level to a transmission level less than the threshold.

  In this case, although the transmission level of the radio wave Wr is reduced, the transmission state of the radio wave Wr is maintained, so that the communication between the reader / writer device 30 and the tag 40 can be continued. For this reason, the state in which communication between the reader / writer device 30 and the tag 40 can be continued without impairing the sense of security of the passerby P1.

(Third embodiment)
Next, a third embodiment shown in FIGS. 4 to 7 will be described. FIG. 4 is a schematic diagram showing a communication system 101 according to the third embodiment of the present invention, and FIG. 5 is a block diagram corresponding to FIG. In addition, about the component similar to 1st Embodiment, the same number is attached | subjected and description is abbreviate | omitted.

  In each of the embodiments described above, the transmission level can be returned to the level before the control by operating the return operation button 32 after the transmission level of the radio wave Wr transmitted from the antenna 31 is stopped or reduced. However, when the return operation button 32 is operated, the transmission level may be increased stepwise to the transmission level before the control as time elapses. 4 and 5, in the communication system 101, when the return operation button 32 is operated, the transmission level of the radio wave Wr transmitted from the antenna 131 gradually increases in the order of Wra, Wrb, Wrc,. It is expressed by the thickness and length of the arrow.

  In this embodiment, the storage unit 134 (see FIG. 5) provided in the main body 130a of the reader / writer device 130 has a map in which the relationship between the elapsed time after the return operation button 32 is operated and the transmission level is set. Based on this map, the control unit 133 (see FIG. 5) increases the transmission level of the radio wave Wr transmitted from the antenna 131 stepwise over time, and returns it to the level before control.

  Further, in the present embodiment, as shown in FIG. 5, the control unit 133 of the reader / writer device 130 includes the reception level calculation unit 33a as in the first embodiment, and the heart pacemaker 150 (see FIG. 4). The reception level of the radio wave Wt transmitted from the tag 140 of the passerby P3 who is the owner can be calculated. When the reception level of the radio wave Wt calculated by the reception level calculation unit 33a is equal to or higher than a predetermined level, the transmission level return control is stopped, and when the reception level of the radio wave Wt is lower than the predetermined level, The return control is continued.

  The antenna 131 is provided with a plurality of (here, three) LEDs 136 to 138 as shown in FIGS. 4 to 6 on the surface thereof. Each of the LEDs 136 to 138 has a different color when turned on, and the LEDs 136 to 138 are turned on in order according to the increasing transmission level.

  Specifically, when the transmission level is low, the lowermost LED 136 is lit as shown in FIG. 6A, and the transmission level is approximately halfway between the transmission level at the initial stage of restoration and the transmission level before control. When the middle level is reached, the central LED 137 is lit as shown in FIG. 6B, and when the high level is equal to the level before the control, as shown in FIG. LED 138 is turned on.

  However, the method of lighting the LEDs 136 to 138 is not necessarily limited to this, and may be a method in which the number of LEDs to be lit increases as the transmission level increases.

Next, the operation of the communication system 101 according to the present embodiment will be described with reference to the flowchart shown in FIG.
First, in this embodiment, in steps S101 to S109, processing corresponding to S1 to S9 in the flowchart shown in FIG. 3 of the first embodiment is performed. Here, if the return operation button 32 is operated in step S109 (step S109: YES), the process proceeds to step S110, and the transmission of the radio wave Wr from the antenna 131 is resumed. In step S110, the transmission level of the radio wave transmitted from the reader / writer device 130 is set to a much lower level than that before the control. At this time, the control unit 133 turns on the LED 136.

  In step S111, the control unit 133 determines whether or not the tag 140, that is, the passerby P3 is approaching the reader / writer device 130 again based on the calculation result of the reception level calculation unit 33a.

  Here, when the passerby P3 approaches the reader / writer device 130 up to a predetermined distance or less and the reception level of the radio wave Wt from the tag 140 becomes equal to or higher than the predetermined level (step S111: YES), the process returns to step S108. On the other hand, when the passerby P3 is away from the predetermined distance and the reception level of the radio wave Wt from the tag 140 is less than the predetermined level (step S111: NO), the process proceeds to step S112, and the return control of the transmission level of the radio wave Wr is performed. The transmission level of the radio wave Wr transmitted from the antenna 131 is increased based on the map. At this time, the control unit 133 turns off the LED 136 and turns on the LED 137 at the same time.

  In step S113, the control unit 133 executes the process corresponding to step S111 again. Here, when the reception level of the radio wave Wt from the tag 140 becomes equal to or higher than the predetermined level (step S113: YES), the process returns to step S108.

  On the other hand, when the reception level of the radio wave Wt from the tag 140 is less than the predetermined level (step S113: NO), the process proceeds to step S114, the return control of the transmission level of the radio wave Wr is continued, and the radio wave Wr transmitted from the antenna 131 is transmitted. Is returned to the level before the control based on the map, and the process returns to step S101 again. At this time, the control unit 133 turns off the LED 137 and turns on the LED 138 at the same time.

  Thus, in this embodiment, when the return operation button 32 is operated, the transmission level is gradually increased to the transmission level before the control as time elapses, so that the passerby P3 is the leader. The transmission level of the radio wave Wr immediately after moving away from the writer device 130 can be made low.

  Therefore, it is possible to earn time for the passerby P3 to move away from the reader / writer device 130 until the transmission level returns to the level before the control, so that the passerby P3 who is moving away from the reader / writer device 130 can feel secure. Can be given. Also, even if the passerby P3 approaches the reader / writer device 130 again immediately after the return operation button 32 is operated and the transmission level return control is started, the anxiety of the passerby P3 can be reduced.

  Moreover, the state of the said transmission level can be visually alert | reported by lighting of LED136-138. For this reason, it becomes possible to easily recognize the transmission level, and as a result, the passerby P3 can obtain a stronger sense of security.

  In addition, as a means to alert | report the said transmission level, it is not necessarily limited to comprising by several LED136-138. For example, it can be configured by a lighting display means for notifying the transmission level by a change in lighting display position, lighting color, character, or the like, and can be configured by various light emitting means such as an organic EL in addition to the LED. The means for notifying the transmission level can be configured by a speaker device that notifies the transmission level by a change in volume, sound quality, or the like.

  The stepwise increase in the transmission level mentioned here includes the increase in the transmission level with time, for example, an increase in which the change in the transmission level and the time are approximately proportional to each other. Shall also be included.

(Fourth embodiment)
In each of the above-described embodiments, the tag 40 or the like owned by the passerby P1 or the like is a passive tag. However, the present invention is not limited to this, and the communication system 201 shown in FIGS. 8A and 9 is configured. Like the tag 240, it is good also as an active tag incorporating the battery 244 as a power supply device. In this case, compared with the tag 40 which is a passive tag (see FIG. 8B), the transmission level of the radio wave Wt becomes higher, and the transmission distance of the radio wave Wt can be increased as shown in FIG. 8A. .

  Therefore, even if the passerby P4 who owns the tag 240 is far away from the reader / writer device 30 as shown in FIG. 8A and FIG. 9, the antenna 31 has information related to the ID code “00000”. Thus, the transmission level of the radio wave Wr can be controlled at an earlier timing. In this case, as described above, although the transmission level of the radio wave Wt transmitted from the tag 240 is high, it is understood that the transmission level does not affect the cardiac pacemaker 250 (see FIG. 8). It is set as much as possible.

  In the present embodiment, the tag 240 is provided with an antenna 241, a control unit 242, and a storage unit 243 as shown in FIG. 9, and on the surface of the tag 240, as shown in FIGS. Two LEDs 245 to 247 are provided, and these LEDs 245 to 247 are turned on using the power of the battery 244. The lighting control of these LEDs 245 to 247 is executed by the control unit 242.

  For example, the control unit 242 includes a reception level calculation unit 242a that calculates a reception level when the radio wave Wr is received by the antenna 241. The control unit 242 is based on the calculated value of the reception level calculation unit 242a. Then, lighting control of the LEDs 245 to 247 is executed.

  Further, the LEDs 245 to 247 have different colors when turned on, and the LEDs 245 to 247 are turned on in order according to the reception level when the antenna 241 receives the radio wave Wr.

  Specifically, when the passerby P4 is sufficiently away from the reader / writer device 30 and the antenna 241 cannot receive the radio wave Wr, or when the reception level is low, as shown in FIG. The leftmost LED 245 is lit. When the reception level is increased from such a low level, as shown in FIG. 10B, the LED 245 is turned off and the central LED 246 is turned on at the same time, and when the reception is further increased, as shown in FIG. As shown in c), the rightmost LED 247 is turned on at the same time as the LED 246 is turned off.

  However, the method for lighting the LEDs 245 to 247 is not necessarily limited to this, and for example, a method in which the number of LEDs to be lighted increases as the reception level increases may be used.

  As described above, in the present embodiment, the battery 240 is built in the tag 240, so that the LEDs 240 to 247 are provided on the tag 240, and the LEDs 245 to 247 can be turned on. Then, it is possible to visually notify the passerby P4 of the level of the radio wave Wr in the vicinity thereof. For this reason, the passer-by P4 can easily recognize the level of the radio wave Wr around the passerby, and as a result, the passer-by P4 can obtain a stronger sense of security.

  In addition, as a means to alert | report the said reception level, it is not necessarily limited to comprising by several LED245-247. For example, it can be configured by a lighting display means for notifying the reception level by a change in lighting display position, lighting color, character, or the like, and can be configured by various light emitting means such as an organic EL in addition to the LED. The means for notifying the reception level can be configured by a speaker device that notifies the reception level by a change in volume, sound quality, or the like.

  8 to 10, the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

(Fifth embodiment)
In the present invention, when the reader / writer device 30 or the like controls the transmission level of the radio wave Wr based on the reading of the ID code “00000”, there are devices that transmit radio waves in addition to the reader / writer device 30 and the like. In this case, the transmission level of the radio wave transmitted from the device may also be controlled.

  FIG. 11 is a schematic diagram showing a communication system 301 and a wireless LAN communication system coexisting therewith according to the fifth embodiment of the present invention, and FIG. 12 is a block diagram corresponding to FIG. In addition, about the component similar to 1st Embodiment, the same number is attached | subjected and description is abbreviate | omitted.

  In the present embodiment shown in FIGS. 11 and 12, a communication system 301 that performs non-contact communication between the reader / writer device 330 and the tag 340 is configured, while an access point 360 corresponding to a wireless base station of a mobile phone, A wireless LAN system for wirelessly connecting a communication terminal device (not shown) owned by a user (not shown) is configured. The access point 360 is communicably connected to the reader / writer device 330.

  Here, as shown in FIG. 11, the access point 360 includes an antenna 361 for non-contact communication with the terminal device, and a control device 362 including a control unit 363 that controls transmission and reception of radio waves in the antenna 361. It is composed of

  The control device 362 of the access point 360 is provided with an interface 364. The control unit 363 is connected to the control unit 333 via the interface 364 and the interface 335 provided in the main body 330a of the reader / writer device 330.

  Further, the control unit 363 is connected to the Internet 370 via the interface 364, and is connected to the server device 380 via these.

  The server device 380 provides various types of information to the terminal device of the wireless LAN user via the Internet 370 or the like.

  Here, as shown in FIG. 11, the passerby P5 carrying the tag 340 approaches the reader / writer device 330, and the reader / writer device 330 uses the ID code “00000” from the radio wave transmitted by the antenna 41 (see FIG. 12). , The control unit 333 controls the transmission level of the radio wave Wr and transmits a predetermined control signal to the control unit 363 provided in the control device 362 of the access point 360 via the interfaces 335 and 364. It is supposed to be.

  At this time, the control unit 363 controls the transmission level of the wireless LAN communication radio wave WLan transmitted from the antenna 361 based on the control signal from the control unit 333. Specifically, the transmission of the radio wave WLan is stopped or the transmission level is reduced.

  As described above, in this embodiment, when the reader / writer device 330 reads the ID code “00000” from the received radio wave Wt, it controls the transmission level of the radio wave Wr, and also uses a device for wireless LAN communication (here, access). The radio wave WLan transmitted from the point 360) is also controlled.

  In this case, the radio waves Wr and WLan transmitted therefrom are controlled using the communication system 301 for all devices that are concerned about the cardiac pacemaker 350 (see FIG. 11) of the passerby P5. can do.

(Sixth embodiment)
Note that the communication system according to each of the above-described embodiments can be applied to a so-called security system that permits / restricts the entry / exit of a management target (visitor, article, etc.) to a predetermined facility, for example. Specifically, each visitor possesses a tag assigned with a different entry / exit permission ID code other than “00000” (that is, any one of “00001” to “99999”), while the reader / writer device 30 or the like has the tag. Stores an entry permission ID list in which all the entry / exit permission ID codes described above are recorded.

  In this case, the reader / writer device, when reading the above-described room entry permission ID code, permits the visitor to enter the room by controlling the opening of the door or the like, while possessing the tag 40 having the ID code “00000”. When the passerby P1 or the like who approaches the reader / writer device 30 or the like, the transmission level of the radio wave Wr may be controlled to be stopped or reduced.

(Seventh embodiment)
In the above-described sixth embodiment, the case where the communication system according to the present invention is applied to a security system has been described, but the present invention is not necessarily limited thereto. For example, as shown in FIG. 13, for example, the present invention may be applied to a location management system in which a related person grasps and manages the location of the management subject M1. In addition, about the component similar to 1st Embodiment, the same number is attached | subjected and description is abbreviate | omitted.

  In the location management system according to the present embodiment, reader / writer devices 430, 430,... Are attached to public facilities in the urban area such as utility poles 410, 411 and traffic lights 412, and these are system-managed via a dedicated network 460. A server 470 is connected. The system management server 470 is connected via a network 460 to a communication terminal device 480 (for example, a personal computer or a mobile phone terminal) owned by a person related to the management target person M1.

  In the present embodiment, the management subject M1 has a tag 440 'that can communicate with the antenna 431 of the reader / writer device 430 in a contactless manner, and the reader / writer device 430 and the tag 440 communicate in a contactless manner. It is possible.

  The tag 440 stores a subject identification ID code (hereinafter abbreviated as an ID code) assigned in advance in its storage unit (not shown here). This ID code is a code for identifying the management target person M1 (tag 440 '), and a different number other than "00000" is assigned to each management target person M1 as in the sixth embodiment described above. ing.

  Here, when the management subject M1 approaches the utility pole 410 as shown in FIG. 13, the antenna (not shown here) of the tag 440 ′ receives the radio wave Wr transmitted from the antenna 431 of the reader / writer device 430. By receiving, the radio wave Wt including information related to the ID code is transmitted to the antenna 431.

  Then, the reader / writer device 430 reads the ID code from the radio wave Wt transmitted from the tag 440 ′, and sends the position information related to the location of the reader / writer device 430 that has performed the reading together with the ID code information. To 470.

  The system management server 470 collates the ID code with the ID registered in advance by each management target person among the various information described above, and specifies the management target person M1 who has determined the whereabouts. Then, information related to the location of the management subject M1 determined based on the position information is transmitted to the communication terminal device 480 of the party corresponding to the management subject M1.

  Incidentally, FIG. 13 shows a case where the communication system 401 is configured by the owner M2 of the cardiac pacemaker 450 approaching the reader / writer device 430 attached to the traffic signal device 412.

  In the present embodiment, although the owner M2 is not a management target person of the location management system, the owner M2 possesses the tag 440 like the management target person M1.

  As in the above-described embodiments, the storage unit (not shown here) of the tag 440 stores an ID code “00000” common to the owner of the reader / writer device cardiac pacemaker 450, for example, as an ID code. Has been.

  When the owner M2 approaches the reader / writer device 430, the tag 440 transmits a radio wave Wt including information related to the ID code “00000” to the antenna 431 of the reader / writer device 530.

  At this time, when the reader / writer device 430 reads the ID code from the radio wave Wt, the reader / writer device 430 stops the transmission of the radio wave Wr or reduces its transmission level, as in the above-described embodiments.

  With such a configuration, even in an urban area where the above-described location management system is configured, the owner M2 can feel secure without worrying about radio waves transmitted from the reader / writer device 430 by the communication system 401. I can act.

  In the present embodiment, when the transmission level of the radio wave Wr is controlled as described above, for example, the transmission level can be automatically returned to the level before the control after a predetermined time has elapsed since the control start time. That's fine.

(Other embodiments)
In each of the above-described embodiments, the owner (passerby P1) of the cardiac pacemaker 50 is described as an example of the target person who should control the radio wave Wr transmitted from the reader / writer device 30 or the like. The invention is not necessarily limited to this. For example, in consideration of the guardian of an infant who has anxiety about the radio wave Wr transmitted by the communication system 1 or the like, the infant may have the tag.

  Further, for example, when handling a precision machine or the like that is not preferably affected by radio waves in a factory or the like, a tag is attached to a box containing the precision machine or the like, and a reader / writer device in which this box serves as a radio wave transmission source When approaching, transmission of radio waves from the reader / writer device may be stopped by communication with the tag.

  In each of the above-described embodiments, the case where the reader / writer device 30 or the like is used as the communication device that communicates with the tag 40 or the like has been described. A reader device that can only read 40 information may be used.

DESCRIPTION OF SYMBOLS 1, 101, 201, 301, 401 ... Non-contact IC medium communication system 30, 130, 330, 430 ... Reader / writer apparatus 32 ... Return operation button 33, 133, 333 ... Control part 33a ... Reception level calculation part 40, 140, 240, 340, 440 ... RFID tags 136, 137, 138 ... LED
242a ... reception level calculation unit 244 ... batteries 245, 246, 247 ... LED

Claims (11)

A non-contact IC medium communication system comprising a non-contact IC medium and a communication device that communicates with the non-contact IC medium,
The communication device reads identification information of the non-contact IC medium by communication with the non-contact IC medium,
Based on the identification information, comprising a transmission level control means for stopping the radio wave transmitted from the communication device to the non-contact IC medium or reducing the transmission level of the radio wave ,
A non-contact IC medium communication system comprising transmission level return operation means for returning the transmission level of the radio wave stopped or reduced by the transmission level control means of the communication device to a transmission level before control. Wherein said transmission level control section of the communication apparatus, the transmission level of the control were the waves, according to claim 1, further comprising a transmission level restoration control section for returning the transmission level of the previous control is increased stepwise over time Non-contact IC medium communication system. The non-contact IC medium communication system according to claim 1, wherein the non-contact IC medium is an active tag having a power supply device. The non-contact IC medium includes a reception level calculation unit that calculates a reception level of a radio wave transmitted from the communication device;
4. The non-contact IC medium communication system according to claim 3 , further comprising reception level notification means for notifying the reception level based on a value calculated by the reception level calculation unit. A communication device for communicating with a non-contact IC medium,
While reading the identification information of the non-contact IC medium by communication with the non-contact IC medium,
Based on the identification information, comprising a transmission level control means for stopping the radio wave transmitted from the communication device to the non-contact IC medium or reducing the transmission level of the radio wave ,
A communication apparatus comprising: a transmission level return operation means for returning the transmission level of the radio wave stopped or reduced by the transmission level control means to a transmission level before the control. The transmission level control means includes a reception level calculation unit that calculates a reception level of radio waves received from the non-contact IC medium,
A reception level comparison unit that compares the calculated value in the reception level calculation unit with a preset threshold;
The communication apparatus according to claim 5 , wherein the transmission level of the radio wave is controlled based on the identification information and a comparison result in the reception level comparison unit. The transmission level control means compares the transmission level of the radio wave with a preset threshold value,
The communication device according to claim 5 or 6 , wherein a transmission level of the radio wave is controlled to be less than the threshold while maintaining a transmission state of the radio wave based on a comparison result with the identification information and the threshold value. Said transmission level control means, the transmission level of the control was the radio wave, claim 5-7 having a transmission level restoration control section for returning the transmission level of the previous control is increased stepwise as time elapses 1 The communication device according to one. The communication apparatus according to claim 8, further comprising a transmission level notifying unit that notifies the transmission level of the radio wave controlled by the transmission level return control unit. A non-contact IC medium communication method for communicating with a non-contact IC medium by a communication device,
Reading the identification information of the non-contact IC medium with the communication device by communicating with the non-contact IC medium;
Based on the identification information, the step of controlling the transmission level of the communication device to stop the transmission of radio waves or reduce the transmission level of radio waves ;
A step of returning the transmission level of the radio wave, which has been stopped or reduced by the transmission level control means of the communication device, to the transmission level before the control based on the operation of the transmission level return operation means. Method. A non-contact IC medium communication program for causing a computer to execute a step of communicating with a non-contact IC medium by a communication device,
Reading the identification information of the non-contact IC medium with the communication device by communicating with the non-contact IC medium;
Based on the identification information, the step of controlling the transmission level of the communication device to stop the transmission of radio waves or reduce the transmission level of radio waves ;
Non-contact for causing the computer to execute the step of returning the transmission level of the radio wave stopped or reduced by the transmission level control means of the communication device to the transmission level before the control based on the operation of the transmission level return operation means IC medium communication program.

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