JP2012037957A - Reader/writer and door opening/closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reader/writer device which has environmental resistance.SOLUTION: An antenna unit 50 constitutes a loop antenna of a reader/writer for reading/writing recorded information stored in an IC card (non-contact information recording medium). The antenna unit 50 includes: an antenna board 4 having a loop antenna 5 arranged in a planar shape thereon; a cover (protecting member) 7 for protecting the loop antenna 5 by covering, in a laminating manner, the surface on which the loop antenna 5 of the antenna board 4 is arranged; a cable 1 for supplying an electric current from the reader/writer to the loop antenna 5; and a sealing member 6 for sealing a space between the antenna board 4 and the cover 7. The cover 7 is configured by a non-magnetic member. Further, at a joint of the cable 1 and the antenna board 4, a bushing 2 is provided for protecting the joint, and at four corners of the antenna board 4, screw holes 3 are provided for fixing the antenna unit body.

Description

  The present invention relates to a reader / writer and a door opening / closing device, and more particularly to a reader / writer including an antenna unit having excellent environmental resistance and a door opening / closing device controlled by the reader / writer.

Conventionally, when a reader / writer that reads and writes recorded information recorded on a non-contact information recording medium such as an IC card is installed outdoors, the reader / writer body has a waterproof structure in order to protect the reader / writer from wind and rain, or It was necessary to cover the reader / writer with a waterproof cover, which had to be expensive. In addition, when it is necessary to install a reader / writer in a place where environmental conditions are very severe such as a freezer, it is necessary to use a component or circuit configuration that operates normally in that environment, which increases the cost of the reader / writer. When such an expensive reader / writer is disposed outdoors, there are problems that the reader / writer is destroyed or the reader / writer main body is stolen.
In order to protect the reader / writer from destruction due to the external pressure, Patent Document 1 discloses a metal protective frame or a non-metallic protective frame having a slit thicker than the main body around the data carrier main body (reader / writer main body). A non-contact data carrier protection device provided with a device is disclosed.

Japanese Utility Model Publication No. 5-61900

However, the conventional technique disclosed in Patent Document 1 has a structure that is strong against external pressure and impact, but has a problem that the installation size is restricted because the overall size is thick and large.
The present invention has been made in view of such a problem, and includes an antenna unit having a structure excellent in environmental resistance in a reader / writer main body, the antenna unit is disposed outdoors, and the reader / writer main body is disposed indoors. Accordingly, an object of the present invention is to provide a reader / writer that can achieve both adaptation to the environment resistance of the reader / writer main body and prevention of theft.
Another object of the present invention is to control the door opening and closing device from indoors and outdoors by arranging the antenna unit of the present invention at an optimal position.

In order to solve the above problems, the present invention provides a reader / writer main body, the reader / writer main body having a separate structure, and a planar loop antenna, a substrate on which the planar loop antenna is formed, A reader / writer comprising: at least one antenna unit including a cover that covers the planar loop antenna; and a cable having a power receiving unit for electromagnetically coupling with the reader / writer main body and connected to the antenna unit. The reader / writer main body performs transmission of carrier power and transmission / reception of data based on a predetermined modulation / demodulation method in a non-contact manner with the non-contact information recording medium via the antenna unit.
In the antenna unit of the present invention, a planar loop antenna is formed on a substrate, and the surface is covered with a cover from above, and is electromagnetically coupled to the reader / writer main body by a power receiving unit via a cable. Therefore, the reader / writer main body and the antenna unit have separate structures. As a result, the reader / writer main body and the antenna unit can be spaced apart and arranged at an optimal location.

According to a second aspect of the present invention, the cover is made of a nonmagnetic member.
In the antenna unit, a planar loop antenna is formed on the surface of a substrate, and exchanges information by electromagnetically coupling with a non-contact information recording medium. Therefore, it is necessary to effectively transmit the magnetic force lines radiated from the loop antenna to the non-contact information recording medium. Therefore, in the present invention, the cover is made of a nonmagnetic member. Thereby, while covering a surface, a magnetic field line can be radiated | emitted effectively.

According to a third aspect of the present invention, a gap between the cover and the substrate is sealed with a seal member.
In order to make the antenna unit last longer, it is necessary to have a waterproof and dustproof structure. Therefore, in the present invention, a sealing member is filled between the substrate and the cover to form a waterproof and dustproof structure. Thereby, the reliability and lifetime of the antenna unit can be increased.

According to a fourth aspect of the present invention, the front and back surfaces of the planar loop antenna and the non-contact information recording medium are configured to be electromagnetically coupled.
Magnetic field lines are radiated from the front and back surfaces of the planar loop antenna. Therefore, if the front and back surfaces of the loop antenna are made of a non-magnetic member, the lines of magnetic force are radiated from both surfaces, and electromagnetic coupling with the non-contact information recording medium becomes possible. Thereby, the recording information of the non-contact information recording medium can be read and written from both sides.

According to a fifth aspect of the present invention, the reader / writer according to any one of the first to fourth aspects, a door that opens and closes an opening provided on a wall, door driving means that opens and closes the door, and the reader / writer And a control unit that controls the door driving means based on the recording information of the non-contact information recording medium read by the information processing apparatus, wherein the reader / writer main body is installed on one side of the wall and the antenna unit Is arranged on the other side surface of the wall portion.
The door opening / closing apparatus of the present invention uses the reader / writer of the present invention, for example, a reader / writer main body is installed indoors, and only an antenna unit is installed outdoors and connected to the reader / writer main body by a cable. As a result, it is possible to protect the expensive reader / writer from theft and minimize the influence of wind and rain.

A sixth aspect of the present invention provides the reader / writer according to any one of the first to fourth aspects, a door that opens and closes an opening provided on a wall, door driving means that opens and closes the door, and the reader / writer. And a control unit that controls the door driving means based on the recording information of the non-contact information recording medium read by the information processing apparatus, wherein the reader / writer main body is installed on one side of the wall and the antenna unit Is arranged at a position where radio waves can be transmitted and received from both side surfaces of the wall portion.
The antenna unit can read and write information recorded on the non-contact information recording medium from both sides. Therefore, in the present invention, taking advantage of the advantage, for example, the antenna unit can be mounted on the glass door on the non-movable side of the slide door so that the non-contact information recording medium can be read and written in close proximity to one antenna unit indoors and outdoors. Place. Thereby, the recording information of the non-contact information recording medium can be read and written with one antenna unit from the indoor and the outdoor.

According to a seventh aspect of the present invention, a through hole is formed in the wall portion, the through hole is closed with a nonmagnetic member having a thickness capable of electromagnetically coupling with the noncontact information recording medium, and the antenna unit is closely attached to the nonmagnetic member. It is characterized by being installed as follows.
In the present invention, a through hole is provided in the wall, the through hole is closed with a nonmagnetic member, and the antenna unit is installed so as to be in close contact with the nonmagnetic member. Thereby, the advantage of the antenna unit can be utilized while reinforcing the point where the antenna unit is weak against external force.

According to the present invention, the antenna unit of the present invention is a planar loop antenna, the surface of which is covered with a cover, and is electromagnetically coupled to the reader / writer main body by the power receiving unit via the cable. Accordingly, since the reader / writer main body and the antenna unit are configured separately, the reader / writer main body and the antenna unit can be spaced apart and arranged at an optimum place.
Further, since the cover is made of a nonmagnetic member, the surface can be covered and the magnetic lines of force can be radiated effectively.
Further, since the sealing member is filled between the substrate and the protective member to form a waterproof and dustproof structure, the reliability and life of the antenna unit can be improved.
Also, if the front and back surfaces of the loop antenna are made of non-magnetic members, magnetic lines of force are radiated from both sides, enabling electromagnetic coupling with the non-contact information recording medium. be able to.

Further, the door opening and closing device of the present invention uses the reader / writer of the present invention, the reader / writer main body is installed indoors, only the antenna unit is installed outdoors, and is connected to the reader / writer main body by a cable. Protects the writer from theft and minimizes the effects of wind and rain.
Also, since the non-contact information recording medium is arranged close to one antenna unit from indoor and outdoor so that the recorded information can be read and written, the recording information of the non-contact information recording medium can be read from the indoor and outdoor with one antenna unit. Can read and write.
Moreover, since the antenna unit is installed so that the non-magnetic member such as glass first closes the through hole in the wall and is in close contact with the non-magnetic member, the antenna unit is reinforced with respect to weak points against external force. Can take advantage of.

It is a figure which shows the antenna unit structure of this invention, (a) is a top view, (b) is a side view. It is a figure which shows the structure of the door opening / closing apparatus which concerns on 1st Embodiment using the antenna unit of FIG. 1, (a) is a cross-sectional view, (b) is the front view seen from the outdoor side. It is a figure which shows the structure of the door opening / closing apparatus which concerns on 2nd Embodiment using the antenna unit of FIG. 1, (a) is a cross-sectional view, (b) is the front view seen from the outdoor side. It is a figure which shows the structure of the door opening / closing apparatus which concerns on 3rd Embodiment using the antenna unit of FIG. 1, (a) is a cross-sectional view, (b) is the front view seen from the outdoor side. It is a figure which shows the structure of the door opening / closing apparatus which concerns on 4th Embodiment using the antenna unit of FIG. 1, (a) is a cross-sectional view, (b) is the front view seen from the outdoor side.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the components, types, combinations, shapes, relative arrangements, and the like described in this embodiment are merely illustrative examples and not intended to limit the scope of the present invention only unless otherwise specified. .

1A and 1B are diagrams showing an antenna unit configuration of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a side view. The antenna unit 50 of the present embodiment has a separate structure from a reader / writer main body (not shown), and the planar loop antenna 5 is formed on the substrate 4, and the cover 7 covering the planar loop antenna 5 and the reader A cable 1 having a power receiving unit (not shown) for electromagnetically coupling with the writer main body and connecting the antenna unit 50 is provided. Moreover, the sealing member 6 which seals the clearance gap between the board | substrate 4 and the cover 7 is provided, and the cover 7 is comprised with the nonmagnetic member. A connecting portion between the cable 1 and the substrate 4 is provided with a bushing 2 for fixing the cable 1 to the connecting portion, and screw holes 3 for fixing the antenna unit main body are provided at four corners of the substrate 4. ing. The material of the substrate 4 may be any material as long as it is a flexible substrate or a substrate composed of a nonmagnetic member. The cable 1 may be directly connected to the reader / writer body.
That is, the antenna unit 50 of the present embodiment is a planar loop antenna 5, the surface of which is covered with the cover 7 and connected to the reader / writer main body by the cable 1. Therefore, the reader / writer main body and the antenna unit 50 are configured separately. As a result, the reader / writer main body and the antenna unit 50 can be spaced apart and arranged at an optimal location. Further, in order to make the antenna unit 50 last long, it is necessary to have a waterproof and dustproof structure. Therefore, in this embodiment, the sealing member 6 is filled between the substrate 4 and the cover 7 to provide a waterproof and dustproof structure. Thereby, the reliability and lifetime of the antenna unit 50 can be improved.

Further, the antenna unit 50 has a planar loop antenna 5 formed on the surface of the substrate 4, and electromagnetically couples with an IC card (non-contact information recording medium) to exchange information. Therefore, it is necessary to effectively transmit the magnetic force lines radiated from the loop antenna 5 to the IC card. Therefore, in this embodiment, the cover 7 is made of a nonmagnetic member. As a result, the surface can be covered (protected) and magnetic field lines can be radiated effectively.
Further, magnetic force lines are radiated from the front and back surfaces of the planar loop antenna 5. Therefore, if the front and back surfaces of the loop antenna 5 are made of a non-magnetic member, magnetic lines of force are radiated from both sides, and the IC card can be electromagnetically coupled. Thereby, the recording information of the IC card can be read and written from both sides.

2A and 2B are diagrams showing the configuration of the door opening and closing apparatus according to the first embodiment using the antenna unit of FIG. 1, FIG. 2A is a cross-sectional view, and FIG. 2B is a view from the outdoor side. It is a front view. In FIG. 2A, the left side of the wall 10 is indoor and the right side is outdoor.
The door opening and closing device 51 of the present embodiment includes two antenna units 14 and 16, a door 18 that opens and closes an opening provided on the wall 10, and a door drive unit (door drive means) 20 that drives the door 18 to open and close. And the reader / writer main body 11 for reading and writing the recorded information recorded on the IC cards 13 and 17 via the antenna units 14 and 16, and the recorded information of the IC cards 13 and 17 read by the reader / writer main body 11. And a control unit 19 for controlling the door drive unit 20. The reader / writer 11 is installed indoors (on one side), and each antenna unit 13, 17 is installed indoors and outdoors on the wall 10 near the door 18 ( Arranged on the other side. The antenna units 14 and 16 are connected to the reader / writer 11 via cables 12 and 15, respectively. The reader / writer 11, the control unit 19, and the door drive unit 20 are fixedly disposed on the wall 10.

The door opening / closing device 51 of the present invention uses the antenna unit 50 described in FIG. 1 and has a reader / writer 11 installed indoors and an antenna unit 14 that reads and writes information recorded on the IC card 13 when going indoors to the outdoors. Then, only the antenna unit 16 is installed outdoors and connected to the reader / writer 11. As a result, the expensive reader / writer 11 can be protected from theft and the influence of wind and rain can be minimized.
That is, when a user enters indoors from the outside, the IC card 17 that he / she owns is brought close to the antenna unit 16 to read, for example, an ID code recorded on the IC card, and the control unit 19 reads the ID code. It is verified whether or not the ID code is an authenticated ID code. If the ID code is an authenticated ID code, the control unit 19 controls the door driving unit 20 to open the door 18.

  Also, when the user goes indoors to outdoors, the door 18 may be opened unconditionally as detected by the sensor. However, when managing the entry / exit history at a company or the like, the IC card 13 possessed by the user may be used. By approaching the antenna unit 14, for example, an ID code recorded on the IC card is read, and the control unit 19 verifies whether the ID code is an authenticated ID code. If it is an ID code, the control unit 19 controls the door drive unit 20 to open the door 18.

3A and 3B are diagrams showing the configuration of the door opening and closing apparatus according to the second embodiment using the antenna unit of FIG. 1. FIG. 3A is a cross-sectional view and FIG. 3B is a view from the outdoor side. It is a front view. The same components will be described with the same reference numerals as in FIG. In FIG. 3A, the left side of the wall 10 is indoor and the right side is outdoor.
The door opening and closing device 52 of the present embodiment includes a power receiving unit 22 that electromagnetically couples to the loop antenna of the reader / writer 21 at one end of the cable 15, and one antenna unit 16 is installed outdoors. Other configurations are the same as those in FIG. That is, the ready-made reader / writer often has a loop antenna installed in the reader / writer main body. Therefore, by providing the power receiving unit 22 electromagnetically coupled to the loop antenna of the reader / writer 21 installed indoors on one side of the cable 15, only one antenna unit 16 may be installed outdoors. Thereby, the number of antenna units can be minimized.
When a user enters indoors from the outside, the IC card 17 he / she owns is brought close to the antenna unit 16 to read the ID code recorded on the IC card 17, for example, and the control unit 19 reads the ID code. It is verified whether or not the ID code is an authenticated ID code. If the ID code is an authenticated ID code, the control unit 19 controls the door driving unit 20 to open the door 18.

  When the user goes out of the room, the IC card 13 owned by the user is brought close to the loop antenna of the reader / writer 21 to read, for example, an ID code recorded on the IC card 13, and the controller 19 Then, it is verified whether or not the ID code is an authenticated ID code. If the ID code is an authenticated ID code, the control unit 19 controls the door driving unit 20 to open the door 18.

4A and 4B are diagrams showing a configuration of a door opening and closing apparatus according to a third embodiment using the antenna unit of FIG. 1, wherein FIG. 4A is a cross-sectional view and FIG. 4B is a view from the outdoor side. It is a front view. The same components will be described with the same reference numerals in FIG. In FIG. 4A, the left side of the wall 23 is indoors and the right side is outdoor.
The door opening and closing device 53 of the present embodiment includes the antenna unit 14 of the present invention, the door 18 that opens and closes the opening provided on the wall 23, the door drive unit 20 that opens and closes the door 18, and the antenna unit 14. The reader / writer main body 11 that reads and writes the recorded information recorded on the IC cards 13 and 17 via the control, and the control that controls the door drive unit 20 based on the recorded information of the IC cards 13 and 17 read by the reader / writer main body 11. And the reader / writer main body 11 is installed indoors, a through hole 25 is formed in the wall 23, and the through hole 25 is made of glass having a thickness that can be electromagnetically coupled to the IC cards 13 and 17 (non- The antenna unit 14 was installed so as to be in close contact with the glass 24. The antenna unit 14 may be installed so as to be closed by the antenna unit 14 in the through hole 25 that penetrates the wall 23 near the door.
In the present invention, a through hole 25 is provided in the wall 23, the through hole 25 is closed with glass 24, and the antenna unit 14 is installed so as to be in close contact with the glass 24. Thereby, the advantage of the antenna unit 14 can be utilized, reinforcing the point where the antenna unit 14 is weak against external force.

FIGS. 5A and 5B are diagrams showing a configuration of a door opening and closing apparatus according to the fourth embodiment using the antenna unit of FIG. 1. FIG. 5A is a cross-sectional view and FIG. 5B is a view from the outdoor side. It is a front view. The same components will be described with the same reference numerals as in FIG. In FIG. 5A, the left side of the wall 10 is indoors and the right side is outdoor.
The antenna unit 14 can read and write information recorded on the IC cards 13 and 17 from both sides. Therefore, in the present embodiment, taking advantage of the advantage, for example, the glass door 18a on the non-movable side of the slide door can be read / written so that the IC card 13 or 17 can be read and written in close proximity to the single antenna unit 14 from inside and outside. The antenna unit 14 is disposed on the side. Thereby, the recording information of the IC cards 13 and 17 can be read and written from the indoor and the outdoor with one antenna unit. That is, the recorded information on the IC card 17 is read and written from the outside through the slide glass 18a.
In the door opening and closing device 54 of the present embodiment, the antenna unit 14 is disposed inside the glass 18 a on the non-movable side of the slide glass 18 without providing a through hole in the wall 10. The other configuration is the same as that of FIG. In the case of this configuration, since it is not necessary to construct the wall surface, it can be realized by using ready-made equipment as it is.

  1 cable, 2 bushing, 3 screw hole, 4 antenna board, 5 loop antenna, 6 seal member, 7 cover, 10 wall, 11 reader / writer main body, 12 cable, 13 IC card, 14 antenna unit, 15 cable, 16 antenna unit , 17 IC card, 18 door, 19 control unit, 20 door drive unit, 21 reader / writer, 22 power receiving unit, 23 wall, 24 glass, 25 opening, 50 antenna unit, 51-54 door opening and closing device

Claims (7)

The reader / writer body,
The reader / writer main body and a separate configuration, and at least one antenna unit including a planar loop antenna, a substrate on which the planar loop antenna is formed, and a cover that covers the planar loop antenna;
A reader / writer comprising a power receiving unit for electromagnetically coupling with the reader / writer main body, and a cable connected to the antenna unit;
The reader / writer main body performs contactless power transmission and data transmission / reception based on a predetermined modulation / demodulation method with the contactless information recording medium via the antenna unit.   The reader / writer according to claim 1, wherein the cover is made of a nonmagnetic member.   The reader / writer according to claim 1, wherein a space between the cover and the substrate is sealed with a sealing member.   4. The reader / writer according to claim 1, wherein the front and back surfaces of the planar loop antenna and the non-contact information recording medium are configured to be electromagnetically coupled to each other. 5. A reader / writer according to any one of claims 1 to 4,
A door that opens and closes an opening provided on the wall;
Door driving means for opening and closing the door;
A control unit for controlling the door driving means based on the recording information of the non-contact information recording medium read by the reader / writer,
A door opening and closing device characterized in that the reader / writer main body is installed on one side of the wall and the antenna unit is arranged on the other side of the wall. A reader / writer according to any one of claims 1 to 4,
A door that opens and closes an opening provided on the wall;
Door driving means for opening and closing the door;
A control unit for controlling the door driving means based on the recording information of the non-contact information recording medium read by the reader / writer,
A door opening and closing device characterized in that the reader / writer main body is installed on one side of the wall and the antenna unit is arranged at a position where radio waves can be transmitted and received from both sides of the wall.   A through hole is formed in the wall, the through hole is closed with a nonmagnetic member having a thickness capable of being electromagnetically coupled to the non-contact information recording medium, and the antenna unit is installed in close contact with the nonmagnetic member. The door opening and closing apparatus according to claim 6.

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