WO2008062828A1 - Système d'amélioration de champ équipé d'un résonateur - Google Patents
Système d'amélioration de champ équipé d'un résonateur Download PDFInfo
- Publication number
- WO2008062828A1 WO2008062828A1 PCT/JP2007/072544 JP2007072544W WO2008062828A1 WO 2008062828 A1 WO2008062828 A1 WO 2008062828A1 JP 2007072544 W JP2007072544 W JP 2007072544W WO 2008062828 A1 WO2008062828 A1 WO 2008062828A1
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- Prior art keywords
- resonator
- field
- improvement system
- coil
- sensor
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07777—Antenna details the antenna being of the inductive type
- G06K19/07779—Antenna details the antenna being of the inductive type the inductive antenna being a coil
- G06K19/07781—Antenna details the antenna being of the inductive type the inductive antenna being a coil the coil being fabricated in a winding process
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/73—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for taking measurements, e.g. using sensing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
Definitions
- the present invention relates to a field improvement system with a resonator, in order to improve a communication situation when performing communication between a sensor and a tag in the field of using RFID (Radio Frequency Identification) and a non-contact IC card.
- RFID Radio Frequency Identification
- a non-contact IC card Presents a simple and effective method.
- the resonance frequency shifts due to the influence of surrounding dielectric material, magnetic material, and metal, and the sensitivity decreases.
- the load is large, the loaded Q becomes small and the sensitivity decreases. did.
- 1S is generally not enough to ensure a magnetic path with a magnetic material.
- the resonance frequency may be significantly shifted due to the interaction between coil antennas. In such a case, the resonance frequency is generally lowered.
- Patent Document 1 Utility Model Registration No. 3121577
- an object of the present invention is to provide a field improvement system with a resonator that can improve the communication environment between sensors, tags, and non-contact type IC cards.
- the present invention provides a field improvement system with a resonator as follows.
- a resonator is directly attached to a sensor, a tag, or a non-contact type IC card to improve the performance of the sensor, tag, or non-contact type IC card.
- a field improvement system with a resonator characterized in that a magnetic material is attached to the coil of the resonator.
- the resonator is approximately 1 /
- a field improvement system with a resonator which is a resonator with a distributed capacity and inductance of two or about one wavelength, such as linear or plate-like.
- the resonator coil and antenna are printed on a plastic film! /, Is etched! /, Is deposited! /, A field improvement system with a resonator.
- the capacitor is formed of a thin electrode / with a plastic film sandwiched between it and a metal surface electrode, etc.
- Field improvement system with a resonator [0016] (10)
- an adhesive paste is added to one side of a plastic film that supports the resonator, and this is covered with silicon paper.
- a field improvement system with a resonator In the field improvement system with a resonator described in (1) above, an adhesive paste is added to one side of a plastic film that supports the resonator, and this is covered with silicon paper.
- an appropriate size and number of resonators may be disposed in the vicinity of a sensor or a tag, or may be in close contact with a part or all of the resonator.
- a field improvement system with a resonator may be disposed in the vicinity of a sensor or a tag, or may be in close contact with a part or all of the resonator.
- the present invention communication between the sensor, tag, and non-contact type IC card is remarkably improved by adding a resonance circuit between the sensor, RFID tag, non-contact type IC card, or these.
- the effect to do was able to be demonstrated.
- the present invention can also be effectively applied to metal-compatible sensors and tags, and has the effect of improving the communication environment by dispersing resonators between tags and non-contact type IC cards.
- FIG.3 Diagram showing the case where the sensor coil is mounted on a magnetic body with a resonance circuit
- FIG. 5 is a diagram showing an example in which the resonator of the present invention is applied to a conventional metal tag.
- FIG.6 Diagram showing an example of a resonator (resonance circuit) using a magnetic rod
- FIG. 10 is a diagram for explaining an example of using a resonator or a resonance circuit for a metal-compatible sensor.
- FIG. 11 Diagram showing an example when used in a metal-compatible magnetic tag
- the resonant circuit is made up of a sheet, and a paste is applied to the back side of the sheet so that it can be added to sensors and tags later.
- FIG.13 Diagram showing an equivalent circuit of a resonator and resonant circuit attached to or attached to a sensor or tag
- FIG. 15 Diagram showing an example of arranging resonators and resonance circuits indicated by broken lines before and after the sensor or tag.
- FIG.16 A diagram showing an example when a sensor and tag are attached to a magnetic rod
- FIG. 20 is a diagram showing a case where a sensor system for a metal plate is constructed by improving the sensor using the resonator of the present invention.
- FIG. 22 is a diagram showing a column of a sensor and tag system for improving an electromagnetic field in which a large number of tags exist using the resonator of the present invention.
- the present invention increases the strength of the magnetic field or current so that the communication distance between the sensor and the tag is short or is difficult to couple, and the sensitivity of the sensor and / or the tag is increased.
- the resonator can be connected to the sensor or tag in a practical and effective way to improve the communication sensitivity of the sensor tag and extend the communication distance. By placing it in close contact with, close to, or in the middle of a sensor or tag, it concentrates without scattering the magnetic field. This is a method of increasing communication sensitivity.
- FIG. 1 shows a case where a resonator is used for a tag.
- Coil 2 is wound around body 1 of tag T, and IC3 is installed at both ends of the coil.
- a coil 5 is formed on the plastic film 4 of the resonator 8, and a capacitor 7 is connected to both ends of the coil 5, thereby constituting an LC resonance circuit.
- the resonance circuit Since the resonance circuit has no loss, it can exhibit high Q, and the resonance frequency of the tag T that is originally deviated can be adjusted to a desired resonance frequency, so that the sensitivity of the tag T is increased. That power S.
- the tag T and the resonator 8 can be used with a force S that is slightly separated, and a force S that can be used with both closely attached.
- the resonator current increases the magnetic field and increases sensitivity.
- FIG. 2 shows a case where a resonator is used for the sensor coil.
- FIG. 3 shows a case where the sensor coil is mounted on a magnetic body with a resonance circuit.
- a resonance circuit consisting of the coil 15 and the capacitor 17 is constructed in the magnetic path at both ends, and strong in the center and side. This is an example of generating a magnetic path.
- the current of the resonance circuit wound around the magnetic body 6 can generate a strong magnetic field S, and therefore the magnetic field generated by the sensor coil 2 'can be further increased, so that the central axis of the coil 2' A strong vertical magnetic field can be obtained.
- the force used as the resonance circuit here can be created by a method that fits the magnetic body. If this is seen as a unit, it can be seen as a resonator.
- the magnetic field can escape to the side of the magnetic body, it is more effective when there is a metal surface below, and is not easily affected by the metal surface. Further, when placed directly on a metal surface, the sensitivity can be further increased by the image effect of the coil 15 wound around the magnetic material.
- Pro-metal sensors and tags that use magnetic materials and are compatible with metal surfaces are further described in Fig. 5, Fig. 9, Fig. 10, and Fig. 11.
- FIG. 4 shows an application example of a resonator.
- FIG. 4 (a) shows a case where the resonator coil 5 is wound further inside the coil 2 of the tag main body 1 and the resonator is constituted by the capacitor 7.
- FIG. The IC chip is shown in 3.
- Fig. 4 (b) shows the case where the sensor coil ⁇ power is supplied by the S terminals 22 and 22 ', and this coil ⁇ is placed on the magnetic body 6 directly or via plastic or the like! Indicates.
- a plastic sheet 4 in which a resonance circuit (resonator coil 5, capacitor 7) is formed on the sensor coil 2 ' is pasted on the sensor circuit. Also in this case, it may be attached directly or via an insulator or dielectric such as plastic.
- the resonator at the top is designed to resonate in the attached state.
- a resonator can be attached below and used in place of the metal plate to have the same effect as the metal plate.
- the metal plate For example, 13.
- the metal plate When used in the 56 MHz band,
- the vibration frequency is 14 ⁇ ; 14.2MH and the resonance frequency of the lower resonance circuit is 13 ⁇ 13.3MH.
- each of the resonators has a structure that is attached to each of the forces depicted separately from the sensor coil 2 'and the magnetic body 6.
- the inductance value is significantly affected and may vary even by a small distance. However, if it is in close contact, it is important to eliminate the instability, since it is a steady force from the beginning and the inductance does not change!
- FIG. 4 (c) corresponds to FIG. 3, and uses a magnetic body 6 and a resonance circuit (resonator coil 5, capacitor 7) for the tag, so that sensitivity can be improved even on a metal surface or near a metal surface. This is the case.
- the body 1 of the tag is affixed on the magnetic body 6 and the resonant circuit (coil 15 and capacitor 17) is formed on both sides, and the case where the magnetic field is released or excited to the side is shown!
- FIG. 5 shows an example in which the resonator of the present invention is applied to a conventional metal-compatible tag.
- FIG. 5 shows a magnetic sheet 6, a tag 1 including a coil 2 and an IC chip 3, and a plastic sheet 4 including a coil 5 and a capacitor 7 constituting a resonance circuit 8, as in a conventional metal-compatible tag. The configuration when added is shown. The metal surface is indicated by M.
- FIG. 5 (a) is a perspective view
- FIG. 5 (b) shows the case seen from the side.
- the plastic sheet 4 constituting the resonance circuit 8 is added onto the main body 1 of the tag.
- a magnetic sheet 6 is affixed to the lower part of the tag body 1, and an aluminum foil is generally affixed to the back to prevent a large change in inductance even when placed on a metal surface. .
- FIG. 6 shows an example of a resonator using a magnetic rod.
- Fig. 6 (a) shows a case where coil 5 is wound around a magnetic rod and capacitors 7 are attached to both ends of coil 5 to resonate and placed in the magnetic field path to strengthen the magnetic field. It has the effect of strengthening the magnetic field with both the magnitude of r and the magnitude of the resonance current.
- the relative permeability is large, the magnetic flux density can be increased even if the cross-sectional area of the magnetic body 6 is small, so that it can be realized in a small size.
- Fig. 6 (b) shows a case of a sensor using a relatively long rectangular magnetic material, and information on the coil 2 and the IC chip 3 of the tag at a distant position is obtained from the resonance circuit (resonator coil 5, 5).
- the figure shows the case where it is amplified by a capacitor 7) and the magnetic field is strengthened by a magnetic substance and transmitted to the sensor coil 2 '.
- the sensor is a force S wound around a distant magnetic material, even with the same magnetic material. good.
- FIG. 7 shows a case where a resonator is used for a metal-compatible sensor or tag. Sensors and tags are placed on the metal surface M.
- Fig. 7 (a) shows a case where the horizontal magnetic path 6 is bent to form a vertical magnetic path so that a vertical magnetic field is easily generated, and this vertical part, horizontal part, and resonance circuit are provided.
- FIG. 7 (a) shows a case where a resonant circuit including a coil 5 and a capacitor 7 is provided in the vertical magnetic path.
- Fig. 7 (b) shows a case where a resonance circuit including a coil 5 and a capacitor 7 is provided on the vertical protrusion of a sensor or tag having a vertical protrusion similarly.
- FIG. 7 (c) shows a case of a metal embedded sensor or a tag. Similarly, the case where a resonant circuit with a coil 5 and a capacitor 7 is provided in the central vertical projection is shown.
- FIG. 8 shows an example of a resonator applied to a UHF band sensor or tag having a high frequency.
- the left antennas TX and RX are transmitting and receiving antennas
- the right antenna is the tag T.
- FIG. 9 shows an example in which a resonator is attached to a metal-compatible sensor.
- the magnetic coil 6 and the exciting sensor coil ⁇ are perpendicular to the metal surface M, and the image generated on the metal surface works to double the magnetic field.
- the wide magnetic part 6-3 on the left side of the coil 2 ' is a part where a vertical magnetic field is likely to be generated, and the coil 5 and the capacitor 7 constituting the resonance circuit 8 are formed in this part.
- This further strengthens the vertical magnetic field. That is, it forms a magnetic field that easily couples with the magnetic field of a tag or non-contact IC card. It works to form a so-called field formation (magnetic field formation).
- a magnetic field with many horizontal components is excited on the edge 6-1 side of the magnetic material, and this horizontal magnetic field generally works ineffectively with respect to the vertical magnetic field, and thus tends to reduce efficiency.
- Fig. 9 (a) When the structure of Fig. 9 (a) and the structure of (b) are used in combination, the performance is slightly higher than in the case of Fig. 9 (a). Comparing Fig. 9 (a) and Fig. 9 (b), Fig. 9 (a) is superior to Fig. 9 (b). This is because Fig. 9 (a) is more effective in performing field formation to clean the vertical magnetic field distribution.
- FIG. 10 further illustrates an example in which a resonator or a resonance circuit is used for a metal-compatible sensor.
- FIG. 10 (a) the force indicating the sensor having the same configuration as in FIG. 9 (a), the resonance circuit of resonator 8 (resonator coil 5, capacitor 7) is placed directly on magnetic body 6.
- the figure shows the case where the paper, plastic, dielectric ⁇ , or thin insulator is placed between them.
- FIG. 10 (b) the place and method of placing the resonance circuit shown in FIG. 9 are mixed, and the resonance circuit (inductive coil 15) is connected to the end 6-1 of the magnetic body 6 on the left side of the figure. ', Inductive coil capacitor 17') is added so that the current of this resonator becomes inductive, and the magnetic field is prevented from leaking at this end.
- the resonance circuit (resonator coil 15, capacitor 17) on the right side close to the sensor coil 2 ' is operated so that a current induced in the magnetic field flows and the magnetic field flowing in the coil is strengthened.
- the operation is similar to the role of the resonant circuit with the lower coil 5 'and capacitor 7' and the upper coil 5 and capacitor 7 in Fig. 4 (b).
- the power to which the three resonant circuits are attached each has a different role!
- the coil 5 of the resonance circuit placed parallel to the surface of the magnetic body 6 excites a vertical magnetic field and performs field formation, and is a resonance circuit (coil 15, 15) close to the fed sensor coil 2 '.
- the capacitor 17) has a magnetic operation, and the leftmost resonance circuit (coil 15 ', capacitor 17') generates a magnetic field that cancels the magnetic field passing through the coil 15 '. This If the magnetic field is too strong, the excited magnetic field will be canceled out.
- the left and right resonant circuits have substantially the same characteristics and functions.
- the left and right resonant circuits when applied to the tag of Fig. 4 (c), the left and right resonant circuits (coil 15, capacitor 17) have similar characteristics and functions. Sensors and tags have the same operating functions, and can be converted into tags when the IC chip is attached at a position corresponding to the power supply unit.
- FIG. 11 shows an example in which the magnetic tag is used for metal.
- a coil 2 is wound around the magnetic body 6, and IC 3 is connected to both ends of the coil 2. Therefore, the magnetic body extends in this direction in which a magnetic field is easily generated in the axial direction of the coil.
- the coinole 2 is wound around one end, so the force that makes it easy to generate a vertical magnetic field at the center of the magnetic body 6 is also provided with a resonant circuit (coil 5, capacitor 7) that excites the vertical magnetic field. ing.
- the placement of an insulator reduces the effect of fluctuation due to the magnetic material, and in order to stabilize the resonance frequency and make it easier to manufacture, it is better to have an insulator part.
- the coil 5 and the chip capacitor 7 are attached on top of this, and the IC3 is also attached in the same way, a circuit can be assembled at the same time as a hybrid IC, making it suitable for mass production.
- the ability to construct such a circuit without using ceramics is easier to mass produce.
- the metal plate MS is added from the beginning in order not to disturb the resonance (tuning) frequency.
- the resonance circuit 8 is formed of a plastic sheet 4, and a paste 9 is applied to the back side of the plastic sheet 4 so that it can be added to a sensor or tag later. It shows the case where it is configured so that it is pasted and the silicon paper is removed at the time of bonding, and it is bonded to the sensor or tag.
- a large number of chip capacitors 7 are mounted in the same way as the process for making general coil-type tags.
- FIG. 12 (a) shows an example of a plastic sheet 4 with a resonator 8 (coil 5 and capacitor 7) that can be bonded.
- FIG. 12 (b) shows a capacitor constituted by the electrodes EP on the front and back sides of the plastic film 4.
- An example of a resonator with an inductance where the front and back coils are connected by a through hole SH is shown below.
- a capacitor can be configured and combined with two electrodes on both the front and back sides.
- FIG. 13 shows an equivalent circuit of a resonator and a resonance circuit attached to or attached to a sensor or tag.
- FIG. 13 (a) shows the left sensor and the resonance circuit of the main body 1 and the coil 5 of the resonance circuit of the resonator 8 attached to the main body 1 or the coil 15 wound around the magnetic material.
- the corresponding resonant circuit with capacitors 7 and 17 is shown.
- IC3 is connected to coil 2, and in the case of a sensor, both terminals 22 and 22 'of coil 2' serve as a power feeding unit, and a capacitor is connected to IC3.
- IC3 Equivalent capacitance of IC pin.
- Fig. 13 (b) shows the force given as an example of the sensor having the structure of Fig. 10 (b).
- An IC may be connected to both ends of the coil 2 'and used as an IC tag.
- the upper resonant circuit shows a planar resonant circuit
- the two lower right resonant circuits show a resonant circuit wound around a magnetic material, and are in phase with the exciting magnetic field at the center of the coil by the current that induces the magnetic field.
- the general purpose is as follows: More often used to excite a stronger magnetic field.
- FIG. 14 shows an example when there are a plurality of tags.
- the multiple resonance circuits 8 coil 5, capacitor 7) are used for the purpose of properly arranging and strengthening the magnetic field. Interference occurs due to the purpose of strengthening the magnetic field emitted from the sensor halfway and reaching further, the purpose of strengthening the magnetic field of the sensor or tag, and the presence of multiple tags.
- Arrangement of resonators 8 is arbitrary and may be used every other or plural as shown in the figure.
- FIG. 15 shows an example in which resonators and resonance circuits 8 and 8 ′ indicated by broken lines are arranged before and after the sensor or tag.
- the resonance circuit coil 5 and the capacitor 7 are provided above the sensor, and another resonance circuit coil 5 ′ and the capacitor 7 ′ are provided below the sensor. This is an example of such a case.
- FIG. 4 (b) shows an example of a sensor, but when IC3 is connected to terminals 22 and 22 ′ at both ends of the sensor coil of FIG. 15, it becomes an example of an IC tag.
- the broken line on the left side of Fig. 15 shows the equivalent circuit of the IC circuit.
- FIG. 16 shows an example in which a sensor and a tag are attached to a magnetic round bar or square bar 6, 6 ′.
- a sensor coil 2 ′ in the center of the example of FIG. 6B, power is supplied through power supply terminals 22 and 22 ′, and the tag coil 2 and IC 3 are connected to the tip of the magnetic body 6.
- the coil 5 and the capacitor 7 of the resonant circuit are attached to both sides at a little distance. Create a uniform magnetic field so that the tag can also be connected to this.
- a metal surface can be placed underneath to provide a metal-compatible sensor.
- Fig. 6 (b) shows a force that was a square magnetic body. Even a round magnetic body as shown in Fig. 16 or a square magnetic body has the same effect. Because there are multiple resonance circuits, it is possible to increase the distance between the sensor and the tag. Also, the tag itself (coil 2, IC3) can be used separately without being attached to the same magnetic rod. The resonance circuit of the coil 5 and the capacitor 7 mounted on the same magnetic material, and the magnetic field generated by the resonance circuit of the coil 15 and the capacitor 17 facilitates communication between the sensor and the tag. It is the purpose to use.
- FIG. 17 is an explanatory diagram showing that the magnetic field of the sensor or tag by the magnetic surface eccentric coil corresponding to the metal surface is improved.
- FIG. 17 (a) shows the approximate distribution of the magnetic field by the eccentric excitation coil of the magnetic body 6 placed on the metal surface.
- Fig. 17 (a) shows the fact that a vertical magnetic field can be generated at the center of the magnetic body 6 by moving the coil to one end. Since the magnetic field leaks considerably from the end of the magnetic body 6 on the left end, it is not possible to create a vertical magnetic field only at the center.
- the magnetic field excited by the coil 5 of the resonance circuit 8 strongly generates a vertical magnetic field.
- FIG. 8 is a diagram for explaining that a magnetic field generated at the end of the magnetic body 6 or scattered magnetic fields can be absorbed and concentrated to generate a strong / perpendicular magnetic field at the center of the magnetic body 6. This is the field formation effect described in the previous explanation.
- FIG. 18 is an explanatory diagram showing that the magnetic field of the conventional sensor or tag is improved by the resonator.
- FIG. 18 (a) is a magnetic field of a general sensor or tag coil.
- Fig. 18 (b) shows that when the resonant circuit 8 (coil 5, capacitor 7) is brought close to the coil 2 (2 ') of the sensor or tag, a larger magnetic field is generated by the current flowing through the resonant circuit 8. Show how to do.
- FIG. 18 (c) shows a case where the resonance circuit 8 (coil 5, capacitor 7) has a function of concentrating the magnetic field that expands as the coil 2 (2 ′) force of the sensor or tag is also separated.
- FIG. 18 In this case, since the magnetic field has the same shape as the magnetic field generated in the sensor coil or tag coil, the larger the resonance current of the resonance circuit, that is, the higher the Q, the greater the effect. , The balance with the band, the stability, the number of turns, etc.
- FIG. 19 shows a comparison of resonance characteristics.
- Figure 19 shows that the magnetic field strength due to the resonance characteristics of general sensors and tags is G, and when a resonance circuit is added, the magnetic field is only H-H near the resonance point.
- FIG. 20 shows a case where a sensor system for a metal plate is constructed by improving the sensor using the resonator of the present invention. Applying it to magnetic sensors compatible with metal plates, it can be used for access control systems, machine controls, and various management controls by using the effects of extending the communication distance with non-contact IC cards and improving communication conditions. It can be used
- a resonant circuit 8 is attached to the sensor, and the input / output of the sensor coil 2 'may be wired to the back side of the metal plate M via the substrate PCB, or the reader / writer R / W And may be guided to the control circuit CB using a switch box.
- a computer is used for control and record management. There are various uses beyond the computer, but the mechanism Ma of various functions can be controlled. It is better to attach a LED or buzzer to the sensor to make it easier to recognize. Also covered with a plastic cover P indicated by a broken line!
- FIG. 21 shows a case where a metal plate-compatible tag system is constructed by improving the tag using the resonator of the present invention.
- power is supplied to IC3 via coil 2 by a resonant circuit consisting of coil 5 and capacitor 7 that excites a vertical magnetic field.
- the signal is transmitted to the sensor (Sensor Ant) through the coil 2 and the coil 5 of the resonance circuit.
- This signal is read by the reader / writer R / W and transmitted to the PC. It can be recorded and saved on a PC, and can perform predetermined tasks.
- the signal read by the R / W can be transmitted by methods such as wired, wireless ZigBee, bruteus, and specific low power.
- FIG. 22 shows a column of a sensor and tag system for improving an electromagnetic field in which a large number of tags exist using the resonator of the present invention.
- the figure shows a resonator and a resonant circuit in an environment where a large number of tags ⁇ , ⁇ ⁇ are used.
- a tag ⁇ is attached to each book file to identify or sort what is in it, or to remove what has been removed.
- identifying and identifying the sensor antenna (Sensor Ant) below or next to the tag correct the resonance frequency shift due to the coupling between the tags, and tag T, T ⁇ ⁇ ⁇ ⁇ Can be prevented from interfering with each other or acting inductively, making it difficult to read.
- the resonator can be installed on a tag or object to increase the communication distance between the sensor and the tag, or to improve the resonance state of the tag, thereby improving the communication environment between the sensor and the tag. Have.
- Sensor antenna Sensor Ant
- reader / writer R / W are connected in a wired manner
- the reader / writer R / W and the computer must be connected by a non-spring, such as Bruteus, ZigBee, NFC, or specified low power Evolution.
- the signal read by the reader / writer R / W is managed and displayed by the computer.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Burglar Alarm Systems (AREA)
- Credit Cards Or The Like (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/312,623 US8305217B2 (en) | 2006-11-21 | 2007-11-21 | Field improving system provided with resonator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006314155A JP4422712B2 (ja) | 2006-11-21 | 2006-11-21 | 共振器付フィールド改善システム |
JP2006-314155 | 2006-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008062828A1 true WO2008062828A1 (fr) | 2008-05-29 |
Family
ID=39429757
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/072544 WO2008062828A1 (fr) | 2006-11-21 | 2007-11-21 | Système d'amélioration de champ équipé d'un résonateur |
Country Status (3)
Country | Link |
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US (1) | US8305217B2 (ja) |
JP (1) | JP4422712B2 (ja) |
WO (1) | WO2008062828A1 (ja) |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1049639A (ja) * | 1996-08-02 | 1998-02-20 | Shinwa Kogyo Kk | 埋設物認識方法とその埋設標識体 |
JPH10215210A (ja) * | 1996-11-29 | 1998-08-11 | Nippon Steel Corp | データキャリアシステム |
JPH11180079A (ja) * | 1997-12-25 | 1999-07-06 | Dainippon Printing Co Ltd | 情報記録媒体及びその認証方式 |
JP2000050534A (ja) * | 1998-08-03 | 2000-02-18 | Shiro Sugimura | Icカードの電力供給装置 |
JP2000099655A (ja) * | 1998-09-18 | 2000-04-07 | Omron Corp | 非接触通信カード装置、非接触通信カード、カードホルダ及び非接触通信方法 |
JP2000270501A (ja) * | 1999-03-19 | 2000-09-29 | Nippon Telegr & Teleph Corp <Ntt> | 基地局通信装置、及び携帯無線通信装置への電力供給方法 |
JP2001101370A (ja) * | 1999-10-04 | 2001-04-13 | Dainippon Printing Co Ltd | 情報処理媒体 |
JP2004253858A (ja) * | 2003-02-18 | 2004-09-09 | Minerva:Kk | Icタグ用のブースタアンテナ装置 |
JP2004336605A (ja) * | 2003-05-12 | 2004-11-25 | Toshiba Corp | 帯域通過フィルタ |
JP2004348497A (ja) * | 2003-05-23 | 2004-12-09 | Mitsubishi Materials Corp | Rfidアンテナの構造及び該構造のアンテナを備えるタグ及びリーダ/ライタ |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6362738B1 (en) * | 1998-04-16 | 2002-03-26 | Motorola, Inc. | Reader for use in a radio frequency identification system and method thereof |
JP3121577U (ja) | 2006-03-02 | 2006-05-18 | 株式会社スマート | 偏心磁性体コイルシステム |
-
2006
- 2006-11-21 JP JP2006314155A patent/JP4422712B2/ja not_active Expired - Fee Related
-
2007
- 2007-11-21 WO PCT/JP2007/072544 patent/WO2008062828A1/ja active Search and Examination
- 2007-11-21 US US12/312,623 patent/US8305217B2/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1049639A (ja) * | 1996-08-02 | 1998-02-20 | Shinwa Kogyo Kk | 埋設物認識方法とその埋設標識体 |
JPH10215210A (ja) * | 1996-11-29 | 1998-08-11 | Nippon Steel Corp | データキャリアシステム |
JPH11180079A (ja) * | 1997-12-25 | 1999-07-06 | Dainippon Printing Co Ltd | 情報記録媒体及びその認証方式 |
JP2000050534A (ja) * | 1998-08-03 | 2000-02-18 | Shiro Sugimura | Icカードの電力供給装置 |
JP2000099655A (ja) * | 1998-09-18 | 2000-04-07 | Omron Corp | 非接触通信カード装置、非接触通信カード、カードホルダ及び非接触通信方法 |
JP2000270501A (ja) * | 1999-03-19 | 2000-09-29 | Nippon Telegr & Teleph Corp <Ntt> | 基地局通信装置、及び携帯無線通信装置への電力供給方法 |
JP2001101370A (ja) * | 1999-10-04 | 2001-04-13 | Dainippon Printing Co Ltd | 情報処理媒体 |
JP2004253858A (ja) * | 2003-02-18 | 2004-09-09 | Minerva:Kk | Icタグ用のブースタアンテナ装置 |
JP2004336605A (ja) * | 2003-05-12 | 2004-11-25 | Toshiba Corp | 帯域通過フィルタ |
JP2004348497A (ja) * | 2003-05-23 | 2004-12-09 | Mitsubishi Materials Corp | Rfidアンテナの構造及び該構造のアンテナを備えるタグ及びリーダ/ライタ |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110163167A1 (en) * | 2008-06-20 | 2011-07-07 | Smart Packaging Solutions (Sps) | Contactless card with security logo |
US20150137615A1 (en) * | 2008-07-02 | 2015-05-21 | Access Business Group International Llc | Electromagnetic interference mitigation |
JP2010192951A (ja) * | 2009-02-16 | 2010-09-02 | Panasonic Corp | アンテナ装置 |
JP2013513277A (ja) * | 2009-12-07 | 2013-04-18 | アイシス・イノヴェイション・リミテッド | 共通通信装置 |
JP5660229B2 (ja) * | 2011-11-08 | 2015-01-28 | 株式会社村田製作所 | アンテナ装置および通信装置 |
WO2013069455A1 (ja) * | 2011-11-08 | 2013-05-16 | 株式会社村田製作所 | アンテナ装置および通信装置 |
US9607260B2 (en) | 2011-11-08 | 2017-03-28 | Murata Manufacturing Co., Ltd. | Antenna device and communication apparatus |
JP5578291B2 (ja) * | 2012-06-04 | 2014-08-27 | 株式会社村田製作所 | アンテナ装置及び通信端末機器 |
CN103765675A (zh) * | 2012-06-04 | 2014-04-30 | 株式会社村田制作所 | 天线装置及通信终端设备 |
CN103765675B (zh) * | 2012-06-04 | 2015-06-10 | 株式会社村田制作所 | 天线装置及通信终端设备 |
US9582693B2 (en) | 2012-06-04 | 2017-02-28 | Murata Manufacturing Co., Ltd. | Antenna device and communication terminal device |
WO2013183552A1 (ja) * | 2012-06-04 | 2013-12-12 | 株式会社村田製作所 | アンテナ装置及び通信端末機器 |
JP5846337B2 (ja) * | 2013-07-16 | 2016-01-20 | 株式会社村田製作所 | アンテナ装置及び通信装置 |
CN109565113A (zh) * | 2016-06-01 | 2019-04-02 | 户田工业株式会社 | 天线装置以及使用其的ic标签 |
Also Published As
Publication number | Publication date |
---|---|
US20090315680A1 (en) | 2009-12-24 |
JP2008129850A (ja) | 2008-06-05 |
JP4422712B2 (ja) | 2010-02-24 |
US8305217B2 (en) | 2012-11-06 |
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