WO2004070966A1 - 通信装置及び通信システム - Google Patents
通信装置及び通信システム Download PDFInfo
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- WO2004070966A1 WO2004070966A1 PCT/JP2004/001077 JP2004001077W WO2004070966A1 WO 2004070966 A1 WO2004070966 A1 WO 2004070966A1 JP 2004001077 W JP2004001077 W JP 2004001077W WO 2004070966 A1 WO2004070966 A1 WO 2004070966A1
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- WIPO (PCT)
- Prior art keywords
- communication device
- communication
- metal layer
- data carrier
- opening
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
- G06K7/10178—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10346—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the far field type, e.g. HF types or dipoles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
Definitions
- the present invention relates to a communication device and a communication system that include a transmission / reception unit including an antenna, a control unit, and a storage unit, and that perform communication with a data carrier using electromagnetic waves.
- Data carriers having an antenna coil and a storage unit and performing non-contact communication by electromagnetic waves are widely used in various fields.
- a data carrier formed as a force-type card is used as an IC card for commuter pass related to traffic, financial cash card, and personal recognition for opening and closing doors to secure security. Have been used.
- these IC cards are formed by sandwiching a data carrier between two thin protective resin plates.
- a communication device that performs electromagnetic wave communication with a data carrier is installed as a card detection unit in, for example, an automatic ticket gate at a transportation facility, an automatic cashier at a financial institution, or an opening and closing mechanism that opens and closes an opening and closing door.
- the data carrier and the communication device communicate with each other in a non-contact manner using electromagnetic waves. That is, the data carrier and the communication device each include an antenna coil, a control circuit, and a storage unit, and mutually transmit and receive information using the antenna coil to execute various managements and controls.
- a communication device is placed on the door or a wall adjacent to the door, and a card-type data carrier is brought close to the communication device.
- the code transmitted from the data carrier matches the code stored in the communication device, the door is automatically unlocked. I do.
- electromagnetic waves can easily pass through non-conductive materials such as wood and resin, but in conductive materials such as iron plates, eddy currents are generated by electromagnetic waves, and the communication sensitivity is significantly reduced. Therefore, it has conventionally been impossible to perform electromagnetic wave communication via a conductive material such as an iron plate.
- the communication device is generally protected by a case or the like for durability, but for the above reasons, the surface of the communication device, especially its antenna, is protected by a non-conductive resin (plastic) case. Placed or attached to However, since the resin case has lower strength and durability than the metal case, it is needless to say that it is desirable to protect the communication device with the metal case if possible.
- the communication device is usually housed in a box made of luster attached to the surface of the door or the surface of the wall adjacent to the door, and
- the data carrier is configured to be unlocked by approaching the surface of the data carrier. Protruding the box from the surface of a door or wall is not desirable in appearance and can be easily destroyed, which poses a security problem.
- Japanese Patent Application Laid-Open Publication No. 2003-41918 discloses a system in which a communication device is arranged inside a wall using an iron plate or the like, and a data carrier is brought close to the surface of the wall to unlock the opening / closing door.
- a communication device having a transmission / reception unit including an antenna, a control unit, and a storage unit is mounted inside a wall adjacent to a door, and a data carrier is used by utilizing leakage magnetic flux leaking through a small gap in a wall of an opening / closing door. It communicates between and automatically unlocks the door.
- This system is excellent in appearance and security because the communication device is not exposed on the wall surface. However, it is necessary to arrange the communication device close to the boundary between the opening and closing door and the wall. Disclosure of the invention
- the present invention solves the above-mentioned problems, and a communication employing the above-described magnetic flux leakage method.
- An object of the present invention is to provide a communication device that solves a problem left in a device and a communication system using the communication device.
- a communication device is a communication device that includes a transmission / reception unit including an antenna, a control unit, and a storage unit and performs electromagnetic wave communication with a data carrier.
- a transmission / reception unit including an antenna, a control unit, and a storage unit and performs electromagnetic wave communication with a data carrier.
- the communication device at least a surface of the antenna part of the transmitting / receiving unit is covered with a metal layer, and the metal layer can communicate with the data carrier through the metal layer by electromagnetic induction. It is characterized by having a material and a thickness. ⁇
- the surface side of the antenna portion of the transmission / reception section, which is the communication terminal portion, is protected by the specific metal layer, so that the durability of the transmission / reception terminal portion can be improved without impairing practical communication sensitivity. .
- the communication side surface of the communication device including the transmission / reception unit, the control unit, and the storage unit can be covered with the metal layer. With such a configuration, the durability of the entire communication device can be improved.
- an austenitic stainless steel, titanium or white copper can be used as a material of the metal layer.
- high communication sensitivity can be obtained without impairing durability even with a relatively thin protective layer.
- the thickness of the metal layer can be selected from a range of 0.05 mm or more and 1 mm or less. Within this thickness range, high reliability, communication sensitivity and durability can be ensured.
- a position display unit for displaying a communication position on the surface side of the metal layer, or an encryption display unit having an encryption function consisting of a mark, a graphic, or a symbol can be provided.
- the data carrier can be reliably approached to the communication position from the surface side of the metal layer, so that the distance between the communication device and the data carrier can be improved.
- the electromagnetic wave communication can be performed with high sensitivity and communication sensitivity.
- an encryption display unit when an encryption display unit is provided, only a specific person who has previously recognized the encryption display unit can perform electromagnetic wave communication, so that a communication system having a high security function can be configured.
- the communication system of the present invention includes a data carrier having a transmission / reception unit including an antenna, a control unit, and a storage unit, and an electromagnetic wave communication between the data carrier having a transmission / reception unit including an antenna, a control unit, and a storage unit.
- a communication device for performing the communication.
- the communication system at least the surface of the antenna portion of the communication device is covered with a metal layer, and the metal layer is capable of performing electromagnetic wave communication with the data carrier via the metal layer by an electromagnetic induction action. It is characterized by having material and thickness.
- the metal layer is made of a material and a thickness capable of performing electromagnetic wave communication with the communication device via the metal layer by electromagnetic induction. It can be configured to have In this way, the durability of the data carrier used in the communication system is increased, and the reliability of the communication system can be further improved.
- the communication device may be installed in an opening / closing lock mechanism. Then, at least the surface side of the antenna portion of the installed communication device is covered with the metal layer, and the code information stored in the storage unit of the communication device and the specific code information transmitted from the data carrier are controlled.
- the control unit of the communication device outputs an unlocking signal to the opening / closing mechanism when the two pieces of information match each other.
- a part of the object formed of a metal material can form the metal layer, and communicate with a data carrier approached from the outside via the metal layer. Can be unlocked. Therefore, it is not necessary to form a special magnetic flux leakage path near the antenna part of the communication device. In addition, there is no restriction on the arrangement or mounting position of the communication device.
- the opening / closing lock mechanism is provided over an opening / closing door or an opening / closing lid and a metal wall or a wall containing a metal material adjacent thereto, and the communication device is arranged in an opening provided in the wall or inside the opening. be able to.
- the communication system of the present invention can be applied to the opening / closing control of the opening / closing door and the opening / closing lid provided on the metal wall. Also, since there is no need to provide a protruding part on the surface of the metal wall, it is excellent in appearance and security.
- it is possible to display a position display unit for displaying a communication position on the front surface side of the wall, or an encryption display unit having an encryption function including a mark, a graphic, or a symbol.
- the data carrier can be reliably approached to the communication position S required for opening and closing from the front side of the metal layer.
- electromagnetic communication can be performed with high communication sensitivity between the communication device and the data carrier, so that anyone can reliably control the open / close lock mechanism.
- a cryptographic display when a cryptographic display is provided, only the specific person who has previously recognized the cryptographic display can perform electromagnetic wave communication with high communication sensitivity and secure high security functions of the open / close lock mechanism. In this state, the opening / closing lock mechanism can be reliably opened / closed.
- FIG. 1 is a block diagram illustrating the principle of electromagnetic wave communication of a communication system using the communication device according to the present invention.
- FIG. 2 is a block diagram illustrating an opening / closing door opening / closing system utilizing the electromagnetic wave communication principle of a communication system using the communication device according to the present invention.
- FIG. 3 is a flowchart illustrating the operation of the opening / closing door opening / closing system using the electromagnetic wave communication principle of the communication system using the communication device according to the present invention.
- Fig. 4 shows the application of the system for opening and closing doors using the electromagnetic wave communication principle of a communication system using the communication device according to the present invention to the doors and adjacent walls of a building made of metal material. It is the front view seen from the outside of the door.
- '' Fig. 5 shows an example of applying the system for opening and closing doors using the electromagnetic wave communication principle of the communication system using the communication device according to the present invention to the doors and adjacent walls of a building made of metal material.
- FIG. 4 shows the application of the system for opening and closing doors using the electromagnetic wave communication principle of a communication system using the communication device according to the present invention to the doors and adjacent walls of a building made of metal material.
- FIG. 6 shows the application of the system for opening and closing doors using the electromagnetic wave communication principle of the communication system using the communication device according to the present invention to the opening and closing doors of a safe made of a metal material and the adjacent wall.
- FIG. 2 is a perspective view of the device viewed from the outside.
- Figure ⁇ is a cross-sectional view showing the communication device placed on the front side of the safe via the metal layer, and the opening and closing device installed between the open / close door of the safe and the adjacent wall. It is sectional drawing which shows a structure.
- FIG. 8 is an explanatory sectional view and an explanatory front view showing an example in which the data carrier structure of the communication system according to the present invention is configured as a card.
- FIG. 9 is a diagram showing a configuration of a data carrier having a circular antenna coil and a state of a magnetic field generated in the antenna coil.
- FIG. 10 is a block diagram showing the configuration of the control system of the data carrier.
- FIG. 11 is a sectional explanatory view showing a configuration in which a data carrier having a circular antenna coil is sealed in a container formed of a metal layer.
- FIG. 12 is an explanatory sectional view showing a configuration in which a data carrier having a cylindrical antenna coil is sealed in a container formed of a metal layer.
- a communication device 1 is provided with a transmission / reception unit 3 having an antenna coil 2, and the entire communication device 1 is protected by a thin metal layer 4.
- the data carrier 5 is also provided with a transmitting / receiving unit 7 having an antenna coil 6.
- an electromagnetic wave for standby for example, is constantly applied from the antenna coil 2 of the communication device 1 disposed inside the metal layer 4, a skin current I is generated in the metal layer 4 by the electromagnetic wave, and the metal current is generated by the skin current I.
- An electromagnetic wave of the same frequency is generated on the opposite side of layer 4.
- the data carrier 5 is brought closer to the communication device 1, the data carrier 5 is charged with the electric power by the electromagnetic waves and enters an activated state. Then, a response electromagnetic wave H1 including a specific code or the like is transmitted from the antenna coil 6 of the activated data carrier 5 toward the antenna coil 2 of the communication device 1.
- This electromagnetic wave HI does not directly reach the antenna coil 2 of the communication device 1, but generates a skin current I in the metal layer 4 and the skin current I causes the opposite side of the metal layer 4, that is, the communication device 1
- An electromagnetic wave H 2 of the same frequency is generated on the antenna coil 2 side.
- this electromagnetic wave H 2 is received by the antenna coil 2 of the communication device 1 As a result, communication between the data carrier 5 and the communication device 1 becomes possible. Conversely, when an electromagnetic wave is transmitted from the communication device 1 to the data carrier 5, communication can be performed on the same principle.
- the frequency of the electromagnetic wave used for communication is variously selected in the frequency range of several hundreds Hz to several MHz, but when such a high-frequency electromagnetic wave is applied to the metal layer 4, the metal layer is exposed as described above.
- a skin current I is generated in layer 4, and the thickness d of the skin current I has been found to be inversely proportional to ( ⁇ f ⁇ p) 1/2.
- f is the frequency of the electromagnetic wave
- ⁇ is the permittivity of the metal layer 4
- ⁇ is the resistivity of the metal layer 4.
- the thickness t of the metal layer 4 needs to be t ⁇ d. If the thickness d of the skin current I is constant, the thickness of the metal layer 4 It was found that the smaller the value of t, the higher the communication sensitivity.
- the thinner the thickness t of the metal layer 4 ie, the thinner
- the protective function cannot be performed. Therefore, in order to achieve communication by electromagnetic induction while achieving a practical protection strength, it is necessary to select a metal material that can increase the thickness d of the skin current I.
- austenitic stainless steel white copper, titanium and the like were suitable for such purposes. Brass can also be used.
- iron, aluminum, copper, nickel, etc. the value of the thickness d of the skin current I is small, and communication is difficult unless the thickness is reduced to about the foil.
- Table 1 shows the data carrier using an austenitic stainless steel plate (SUS301, 304, 316) and a ferritic stainless steel plate (SUS430) as the metal plate forming the metal layer 4. This is an experimental result of measuring the non-contact communicable distance of the structure. ⁇ ⁇
- Thickness (mm) Layer thickness (mm Reading distance (mm)
- RFID tags Radio frequency 0 Identification TAG 1 and 2 with an outer diameter of 50 mm and also with an outer diameter of 20 mm as a data carrier 5 having a disk-shaped antenna coil.
- RZW reader / writer for tags
- Table 1 the value obtained by multiplying the thickness of each metal plate by the number of layers is shown as the total thickness of the metal layer 4, and the dimensions of each metal plate forming the metal layer 4 indicate that the magnetic flux leaks from the end. It was large enough not to leak. In the reading distance, “X” indicates a case where reading was not possible.
- Table 2 below shows the results of experiments performed on iron plates, copper plates, copper plates, nickel plates, titanium plates, aluminum plates, and brass plates in the same manner as in Table 1.
- the material of the metal layer 4 austenitic stainless steel, copper, titanium, or the like is preferable as the metal layer 4 for protecting the communication device 1 of the present invention, and these metals are used.
- the thickness of the metal layer 4 is appropriately selected from the range of 0.05 mm or more and 1 mm or less.
- the “metal layer having a material and a thickness capable of performing electromagnetic wave communication by the electromagnetic induction action” means a metal layer 4 having a material and a thickness capable of exhibiting such a function.
- the material of the metal layer 4 is about 0.015 mm when the material is aluminum and about 0.05 mm when the material of the metal layer 4 is steel. These metals also have functions such as moisture proof and light shielding, and can be used as the metal layer 4 of the present invention.
- thin aluminum or copper is used as the metal layer 4, it can be reinforced by laminating an appropriate resin substrate or resin sheet on one or both surfaces to increase the strength.
- FIG. 2 is a block diagram illustrating an opening / closing door opening / closing system configured by a communication system according to the present invention using the electromagnetic wave communication principle of the communication device 1.
- the communication device 1 receives a transmission / reception unit 3 having an antenna coil 2, a control unit 8 for controlling transmission / reception of the transmission / reception unit 3, a storage unit 9 connected to the control unit 8, and a control signal from the control unit 8.
- a drive unit 10 that outputs a drive signal to the opening / closing lock device 30 of the opening / closing door 20 shown in FIGS. 4 and 5, and a power supply unit 11 that receives external AC power and supplies DC power to the devices.
- the transmission / reception unit 3, the control unit 8 and the storage unit 9 can be constituted by a microcomputer, the power supply unit 11 can be constituted by a small diode and a capacitor, and the drive unit 10 can be constituted by a thyristor circuit.
- the antenna coil 2 of the communication device 1 preferably has a disk-shaped coil shape that can easily increase the communication sensitivity.
- the data carrier 5 includes a transmission / reception unit 7 having an antenna coil 6, a power storage capacitor 12 connected to the transmission / reception unit 7, a control unit 13 for controlling transmission / reception of the transmission / reception unit 7, and a control unit 13 And a storage unit 14 connected to the storage unit.
- the transmitting / receiving unit 7, the capacitor 12, the control unit 13, and the storage unit 14 can be configured by a one-chip IC, and the antenna coil 6 is connected to the IC chip.
- the data carrier 5 to be used may be a card type or a bar-shaped key type.In the case of a card type, an antenna coil 6 having a disk-shaped coil shape is used, and in the case of a key type, an antenna having an elongated rod-shaped coil is used. It is desirable to use coil 6.
- the received specific code information is compared with code information stored in the storage unit 9 in advance by the control unit 8 and determined, and when both information match, the control unit 8 sends a control signal to the drive unit 10. Is output from the driving unit 10 to the opening / closing lock device 30 shown in FIG. If they do not match, the control unit 8 does not output the unlock control signal.
- FIG. 3 is a flowchart showing the operation of the switching system.
- step S1 when the power of the communication device 1 is turned on, the control unit 8 of the communication device 1 controls the transmission / reception unit 3 to transmit an electromagnetic wave for charging the power of the data carrier 5 in a relatively short time.
- Send a call repeatedly with one pal step S 2).
- the data carrier 5 receives the electromagnetic wave with its antenna coil 6, sets the transmission / reception unit 7 to the operating state, and charges the capacitor 12 with the electric energy of the electromagnetic wave as electric power. I do.
- the control unit 13 is activated (step S3).
- the control unit 13 transmits the specific code information for unlocking stored in the storage unit 14 from the transmission / reception unit 7 to the communication device 1 (step S4).
- the communication device 1 compares the control unit 8 with the code information stored in the storage unit 9 as described above (step S5), and when the two code information match, the control signal for unlocking is transmitted. (Locking signal) is output, and the locking / unlocking device 30 unlocks the locking door 20 (step S6). If the code information of both does not match, the control signal (locking signal) is not output and the step is performed. Returning to step S2, the transmission of the power supply electromagnetic wave is repeated.
- FIGS. 4 and 5 show an example in which the opening / closing system using the communication system according to the present invention is applied to the opening / closing door 20 of an object building made of metal material and the adjacent wall 25.
- FIG. 4 is a front view and a cross-sectional view
- FIG. 4 is a front view of the opening / closing door 20 as viewed from the outside.
- the door 20 of the building is made of iron plate as shown in Fig. 5.
- the front plate 21 and the back plate 22 are connected to each other, and a side plate 23 for connecting the front plate 21 and the back plate 22 is provided.
- One of the side plates 23 is connected to a wall 25 by a plurality of hinge members 24 so as to be freely opened and closed.
- the wall 25 is composed of a thick base 26 made of reinforced concrete and a relatively thin cover plate 27 made of iron plate that forms a metal layer coated on its surface. It is built upright between.
- the drive unit 31 of the communication device 1 and the opening / closing lock device 30 is arranged inside the wall 25 serving as an object. Note that the communication device 1 and the opening / closing lock device 30 are inserted into a space formed inside the wall 25 from the back side, and are detachably fixed to a surrounding wall portion.
- the drive unit 31 of the opening / closing lock device 30 is constituted by, for example, an electromagnetically driven cylinder 10, and the tip of the drive shaft 32 enters or retracts into a receiving portion 33 provided on the side plate 23 of the opening / closing door 20. To lock or unlock.
- the opening / closing door 20 is provided with a handle 34 for opening and closing by hand as shown in FIGS. Further, a manual lever (not shown) for locking the opening / closing lock device 30 to the locking side is provided on the back side of the opening / closing door 20.
- the communication device 1 is arranged near the covering plate 27 as shown in FIG. 5 so that the communication side, that is, the antenna 2 side approaches the surface side of the wall 25. Then, the entire communication device 1 including the transmission / reception unit 3, the control unit 8 and the storage unit 9 is protected by the cover plate 27.
- the communication device 1 is disposed on the surface side of the wall 2025 to be the object via the covering plate 27 that forms the metal layer having the above-mentioned material and thickness capable of communicating with the data carrier 5 by electromagnetic induction.
- the opening / closing opening device 30 is provided between the opening / closing door 20 made of a metal material and a wall 25 adjacent thereto, and is provided on a wall 25 which is an object made of a metal material. Opens and closes without contact.
- the material of the metal layer 4 is appropriately selected from austenitic stainless steel, titanium, and white copper, and the layer thickness is appropriately selected from the range of 0.05 or more and one leg or less.
- the antenna core on the communication side surface of the communication device 1 and serving as the antenna portion is covered with the metal layer 4.
- a position display portion for displaying a communication position on the surface side of the metal layer 4 which is a surface side of the wall 25, or a cryptographic display portion for displaying a mark 19 having a cryptographic function, a figure, a symbol, or the like can be provided.
- the position display portion indicating the communication position provided on the surface of the metal layer 4 covering the communication side surface of the communication device 1 has a distinctive property such as a convex portion, a character, a figure, a symbol, a pattern, a color, or the like. There is no particular limitation.
- the mark 19 shown in FIGS. 4 and 5 is formed by coloring different from the ground color of the metal layer 4.
- An opening / closing lock mechanism in which the communication device 1 is installed is provided over a wall 25 including an opening / closing door 20 and a covering plate 27 made of a metal material adjacent to the opening / closing door 20, and the communication device 1 is disposed inside the wall 25.
- the safe 40 made of a metal material is configured as a closed type having a front open / close (open / close door) 41 and a surrounding wall 42, and the open / close lid 41 is unlocked by matching numbers.
- a dial knob 43 is provided.
- a communication device 1 and a drive unit 45 of an opening / closing lock device 44 are arranged inside the safe 40.
- a small opening 42a is provided in a wall 42 near the dial knob 43 of the opening / closing lid 41, and the communication device 1 is arranged in the opening 42a.
- the communication side is arranged so as to be on the front side of the wall 42.
- a non-conductive refractory layer 46 is interposed between the communication device 1 and the metal layer 4 provided on a part of the surface of the wall 42.
- the drive unit 45 is formed of, for example, an electromagnetically driven cylinder, and the tip of a drive shaft 47 is provided in a receiving unit 48 provided in the opening / closing unit 41.
- the opening / closing lock device 44 is provided between the opening / closing lid 41 of the safe 40 made of a metal material and the wall 42 adjacent thereto, and the opening / closing lock device is automatically moved to the locking side when the opening / closing lid 41 is closed. Mouth sucked.
- the opening / closing lock mechanism in which the communication device 1 is installed is provided across the opening / closing ⁇ 41 and a wall 42 made of a metal material adjacent to the opening / closing ⁇ 41, and the communication device 1 has an opening 42 a provided in the wall 42. Is placed.
- a position display portion for displaying a communication position or a cryptographic display portion for displaying a mark 19 having a cryptographic function, a figure, a symbol or the like can be provided.
- a data carrier 5 is provided on the handle of the key of the car, a communication device 1 with an antenna coil 2 is installed around the surface of the key entrance of the engine starter door, and a metal layer 4 is provided on the surface to provide power. You can also par.
- FIG. 8 shows an example in which the data carrier structure A is configured as a card.
- 4 is a metal layer provided on both sides of the data carrier 5
- 6 is a circular antenna coil formed by winding a conductor around an air-core coil as shown in FIG. 9, and 51 is a semiconductor IC chip composed of an IC circuit.
- Control chip 52 is a resin layer.
- the circular or annular data carrier 5 shown in FIG. 9 is an outer diameter having an antenna coil 6 composed of a circular air-core coil and a semiconductor IC chip 51 connected to the antenna coil 6 embedded in resin and molded as a whole with resin. 1 0 mn! Those having a thickness of about 50 mm and a thickness of about 7 mm to 12 mm are commercially available. For example, a model Logi Tag commercially available from Hanex Co., Ltd. can be applied.
- the semiconductor IC chip 51 includes a control unit 13 such as a CPU (Central Processing Unit), a storage unit 14 such as a memory having a writable nonvolatile storage element, a transmission / reception unit 7, and a power storage capacitor 12.
- a control unit 13 such as a CPU (Central Processing Unit)
- a storage unit 14 such as a memory having a writable nonvolatile storage element
- a transmission / reception unit 7 a power storage capacitor 12.
- the method of transmitting and receiving the data carrier 5 will be described with reference to FIG. 10.
- the communication device 1 such as a reader / writer transmits an electromagnetic wave for calling the data carrier 5 and transmitting power in the first step
- the data carrier 5 The electromagnetic waves are received by the tuning action of the antenna unit 6 and the transmission / reception unit 7 composed of a transmission / reception circuit, and the power is transmitted to the controller. Store in Densa 12.
- the data carrier 5 is activated, so that the communication device 1 transmits an electromagnetic wave for reading to the data carrier 5 in the next step.
- the electromagnetic wave is input from the antenna coil 6 of the data carrier 5 to the control unit 13 via the transmission / reception unit 7, and the control unit 13 reads necessary information from the storage unit 1 in response thereto, and transmits the information from the transmission / reception unit 7 to the antenna coil 6. And transmits it to the communication device 1 as an electromagnetic wave.
- Writing data from the communication device 1 to the storage unit 14 of the data carrier 5 is also performed according to the above method. These series of steps are performed almost instantaneously.
- an electromagnetic wave can be represented by an electric field and a magnetic field that propagate in an alternating manner with a phase difference of 90 degrees, and the electric current (high-frequency current) flowing through the antenna coil 6 when the magnetic field and the antenna coil 6 are linked. Transmission / reception is performed using this.
- the communication device 1 can receive information from the data carrier 5.
- the data carrier 5 is formed by molding a resin layer 51 with the semiconductor IC chip 51 connected to the circular antenna coil 6.
- an austenitic stainless steel plate, a titanium plate, or a white copper plate is formed on both surfaces of the data carrier 5.
- a metal layer 4 having a thickness of not less than 0.05 mm and not more than 1 is attached by bonding or the like to form a card.
- the surface of the data carrier structure A in the form of a card is covered with the metal layer 4, it can be used as an IC card.
- the specific metal layer 4 communication can be performed between the data carrier 5 and the external communication device 1 with a practical communication sensitivity by the electromagnetic induction effect.
- the data carrier 5 can be externally More reliable protection from impact.
- a data carrier 5 having a circular antenna coil 2 (see FIG. 9) as shown in FIG. 11 or a data carrier 5 having a cylindrical antenna coil 2 as shown in FIG. It is housed in a container 53 formed of a metal layer 4 made of a series stainless steel plate, and the space is filled and sealed with a resin layer 52.
- the data carrier 5 shown in FIG. 12 is formed by winding the antenna coil 2 in a single line spirally around the outer periphery of a cylindrical core member 54 such as a rod-shaped iron core or ferrite in the axial direction (the left-right direction in FIG. 12).
- the antenna has a cylindrical open antenna wound around the antenna coil, and both ends of the antenna coil 2 are connected to a semiconductor IC chip 51 formed of an IC circuit.
- the data carrier 5 formed as a whole in a rod shape seals a semiconductor IC chip 51 composed of an IC circuit and an opening antenna portion including a core member 54 and an antenna coil 2 in an elongated glass container, and has an outer diameter of several mm.
- Products whose size is about 10 mm and whose overall length is reduced from about 10 mm to several tens mm are commercially available.
- a data tag of this type is a glass tag commercially available from Hanex Co., Ltd. as an RFID tag, which has an outer diameter of 2 to 4 sq. And a length of 12 mn! It is extremely small with about 15 thighs.
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- Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/544,714 US20060119534A1 (en) | 2003-02-07 | 2004-02-03 | Communication device and communication system |
EP04707669A EP1592142A4 (en) | 2003-02-07 | 2004-02-03 | COMMUNICATION DEVICE AND COMMUNICATION SYSTEM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003030437A JP4430874B2 (ja) | 2003-02-07 | 2003-02-07 | 通信装置及び開閉システム |
JP2003-030437 | 2003-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004070966A1 true WO2004070966A1 (ja) | 2004-08-19 |
Family
ID=32844268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/001077 WO2004070966A1 (ja) | 2003-02-07 | 2004-02-03 | 通信装置及び通信システム |
Country Status (4)
Country | Link |
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US (1) | US20060119534A1 (ja) |
EP (1) | EP1592142A4 (ja) |
JP (1) | JP4430874B2 (ja) |
WO (1) | WO2004070966A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006134082A1 (fr) * | 2005-06-13 | 2006-12-21 | Mbbs Holding Sa | Transpondeur passif compact |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7588184B2 (en) | 2003-01-03 | 2009-09-15 | American Express Travel Related Services Company, Inc. | Metal-containing transaction card and method of making the same |
US8033457B2 (en) | 2003-01-03 | 2011-10-11 | American Express Travel Related Services Company, Inc. | Metal-containing transaction card and method of making the same |
JP4365326B2 (ja) * | 2003-01-03 | 2009-11-18 | アメリカン エクスプレス トラベル リレイテッド サービシーズ カンパニー, インコーポレイテッド | 金属を包含したトランザクションカード及びそれを作成する方法 |
US7823777B2 (en) | 2003-01-03 | 2010-11-02 | American Express Travel Related Services Company, Inc. | Metal-containing transaction card and method of making same |
US20070177362A1 (en) * | 2006-01-31 | 2007-08-02 | Fortson Frederick O | Covert intelligent networked sensors and other fully encapsulated circuits |
ITTO20070563A1 (it) * | 2007-07-30 | 2009-01-31 | St Microelectronics Srl | Dispositivo di identificazione a radiofrequenza con antenna accoppiata in near field |
GB0724392D0 (en) * | 2007-12-14 | 2008-01-23 | Rhodes Mark | Communication through a continuous barrier |
JP5244042B2 (ja) * | 2009-07-23 | 2013-07-24 | サイエス株式会社 | Icカードリーダ及び扉開閉装置 |
US20120203620A1 (en) | 2010-11-08 | 2012-08-09 | Douglas Howard Dobyns | Techniques For Wireless Communication Of Proximity Based Marketing |
US8929809B2 (en) | 2011-03-22 | 2015-01-06 | Radeum, Inc. | Techniques for wireless communication of proximity based content |
US8880100B2 (en) | 2011-03-23 | 2014-11-04 | Radium, Inc. | Proximity based social networking |
JP5392861B2 (ja) * | 2011-05-16 | 2014-01-22 | ソニー株式会社 | 電力供給装置および方法、電力供給システム、並びにプログラム |
WO2013153736A1 (ja) * | 2012-04-10 | 2013-10-17 | パナソニック株式会社 | 無線電力伝送装置、送電装置、および受電装置 |
CN105453113A (zh) * | 2013-08-15 | 2016-03-30 | 富士通株式会社 | Rfid标签及其制造方法 |
US9705564B2 (en) | 2014-08-29 | 2017-07-11 | Freelinc Technologies | Spatially enabled secure communications |
US10164685B2 (en) | 2014-12-31 | 2018-12-25 | Freelinc Technologies Inc. | Spatially aware wireless network |
CN107609445B (zh) * | 2017-10-03 | 2020-05-05 | 浩德科技股份有限公司 | 一种识别rfid钱箱内款项金额的系统和方法 |
EP4096105A1 (en) | 2021-05-25 | 2022-11-30 | Aiut Sp. z o.o. | Method for digital wireless communication through a barrier made of conductive material, system for performing such communication, and system for monitoring cylinder content |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11131879A (ja) * | 1997-10-30 | 1999-05-18 | Alpha Corp | 非接触型の錠制御装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7002475B2 (en) * | 1997-12-31 | 2006-02-21 | Intermec Ip Corp. | Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag |
US6577226B1 (en) * | 1999-04-27 | 2003-06-10 | Trw Inc. | System and method for automatic vehicle unlock initiated via beam interruption |
JP3894688B2 (ja) * | 1999-10-13 | 2007-03-22 | ローム株式会社 | 通信装置 |
-
2003
- 2003-02-07 JP JP2003030437A patent/JP4430874B2/ja not_active Expired - Fee Related
-
2004
- 2004-02-03 US US10/544,714 patent/US20060119534A1/en not_active Abandoned
- 2004-02-03 EP EP04707669A patent/EP1592142A4/en not_active Withdrawn
- 2004-02-03 WO PCT/JP2004/001077 patent/WO2004070966A1/ja not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11131879A (ja) * | 1997-10-30 | 1999-05-18 | Alpha Corp | 非接触型の錠制御装置 |
Non-Patent Citations (1)
Title |
---|
ARAKI YASUO: "Denji bogai to boshi taisaku", 20 May 1978, TOKYO DENKI UNIVERSITY PRESS, pages: 129 - 138, XP002986822 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006134082A1 (fr) * | 2005-06-13 | 2006-12-21 | Mbbs Holding Sa | Transpondeur passif compact |
Also Published As
Publication number | Publication date |
---|---|
JP2004266352A (ja) | 2004-09-24 |
EP1592142A4 (en) | 2007-09-19 |
JP4430874B2 (ja) | 2010-03-10 |
US20060119534A1 (en) | 2006-06-08 |
EP1592142A1 (en) | 2005-11-02 |
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