CN208077182U - RFIC readers and MOISTURE MEASUREMENT SYSTEM - Google Patents
RFIC readers and MOISTURE MEASUREMENT SYSTEM Download PDFInfo
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- CN208077182U CN208077182U CN201690000828.XU CN201690000828U CN208077182U CN 208077182 U CN208077182 U CN 208077182U CN 201690000828 U CN201690000828 U CN 201690000828U CN 208077182 U CN208077182 U CN 208077182U
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- rfic
- devices
- readers
- moisture
- distance
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
Abstract
The utility model is related to RFIC readers and MOISTURE MEASUREMENT SYSTEMs, make to be attached at subject while using isolated part limit RFI C device at a distance from RFIC readers and the changed RFIC devices of communication distance are communicated with RFIC readers in the presence of moisture, according to the success or not of communication, whether there is water around RFIC devices is detected.
Description
Technical field
The utility model is related to the existing RFIC readers and MOISTURE MEASUREMENT SYSTEM of moisture are detected with RFIC devices.
Background technology
In the past, existed to detect moisture, it is necessary to using the expensive device such as Humidity Detection semiconductor transducer.
Relatively, it is proposed that more simply detection moisture whether there is or not wireless IC device (for example, referring to patent document 1).It is above-mentioned
In wireless IC device, across insulating materials between feed circuit substrate and antenna, if humidity rises, by detecting feed electricity
The case where variation of the electromagnetic coupling of base board and antenna, longer communication distance variation, to detect humidity.
Existing technical literature
Patent document
Patent document 1：No. 5182431 bulletin of Japanese Patent Laid
Utility model content
Utility model technical problem to be solved
But as above-mentioned insulating materials, such as there are the epoxy resin for being dispersed with cellulose, the ring for being dispersed with polyvinyl alcohol
Oxygen resin, but these materials are small relative to the volume change of amount of moisture, the using area of insulating materials is restricted.Cause
And in above-mentioned wireless IC device, there is a situation where to moisture whether there is or not detection power it is insensitive.
The purpose of this utility model is to provide the existing moisture detecting methods that can simply and in high precision detect moisture.
Technical solution for solving technical problem
Moisture detecting method involved by the utility model makes to be attached at subject, communicate in the presence of moisture
The RFIC devices and RFIC readers of distance change are being limited by isolated part between above-mentioned RFIC devices and above-mentioned RFIC readers
Apart from while communicated, according to the success or not of above-mentioned communication, detect surrounding's whether there is water of above-mentioned RFIC devices.
In addition, the RFIC readers involved by the utility model, have：
The communication unit communicated with RFIC devices；
Limit isolated part of the above-mentioned RFIC devices at a distance from above-mentioned communication unit.
In addition, the MOISTURE MEASUREMENT SYSTEM involved by the utility model, using the RFIC devices and RFIC for being attached at subject
Reader detects surrounding's whether there is water of above-mentioned RFIC devices, which is characterized in that
Above-mentioned RFIC devices have：
RFIC elements；
It is connect with above-mentioned RFIC elements and there is the antenna element for capableing of capacity coupled opposing part；And
Absorbent member near the above-mentioned opposing part of above-mentioned antenna element,
Communication distance changes above-mentioned RFIC devices in the presence of moisture,
Above-mentioned RFIC readers have：
The communication unit communicated with above-mentioned RFIC devices；
Limit isolated part of the above-mentioned RFIC devices at a distance from above-mentioned communication unit；And
It is communicated while limiting above-mentioned RFIC devices at a distance from above-mentioned communication unit by above-mentioned isolated part, according to
The success or not of above-mentioned communication come judge moisture whether there is or not judging part.
Utility model effect
Moisture detecting method involved by the utility model, by isolated part limit RFI C device and communication unit away from
From while communicated, according to the success or not of communication come judge moisture whether there is or not, therefore can simply and high-precision detection water
The presence divided.
RFIC readers involved by the utility model, can by isolated part stablize limitation RFIC devices with
The distance of the communication unit of RFIC readers.
MOISTURE MEASUREMENT SYSTEM involved by the utility model, by isolated part limit RFI C device and communication unit away from
From while communicated, according to the success or not of communication come judge moisture whether there is or not, therefore can simply and high-precision detection water
The presence divided.
Description of the drawings
Fig. 1 (a) is that the water content detection for indicating to be attached in the MOISTURE MEASUREMENT SYSTEM involved by the embodiment 1 of diaper is used
The skeleton diagram of the purposes example of RFIC devices, Fig. 1 (b) are the moisture inspections that diaper is attached in the MOISTURE MEASUREMENT SYSTEM for indicate Fig. 1 (a)
Survey the skeleton diagram with RFIC devices and the restriction state at the interval of RFIC readers.
Fig. 2 (a) is the knot of the water content detection RFIC devices in the MOISTURE MEASUREMENT SYSTEM indicated involved by embodiment 1
The vertical view of structure, Fig. 2 (b) are the summary sectional view for indicating the cross-sectional configuration from the direction of the line A-A of Fig. 2 (a), Fig. 2 (c)
It is the equivalent circuit diagram of the water content detection RFIC devices involved by embodiment 1.
Fig. 3 (a) is the summary sectional view for the cross-sectional configuration for indicating RFIC elements, and Fig. 3 (b) is the equivalent circuit of Fig. 3 (a)
Figure.
Fig. 4 is the opposing part subpackage indicated in the serpentine shape of the antenna element of the water content detection RFIC devices of Fig. 1 (a)
Capacity coupled skeleton diagram when moisture content.
Fig. 5 is the flow chart for the moisture detecting method being installed to water content detection with RFIC devices in the purposes example of diaper.
Fig. 6 (a) is the side view of the water content detection RFIC devices in the MOISTURE MEASUREMENT SYSTEM involved by embodiment 2,
Fig. 6 (b) is the vertical view of the RFIC devices of Fig. 6 (a), and Fig. 6 (c) is the ground plan of the RFIC devices of Fig. 6 (a).
Fig. 7 is indicated by the RFIC devices 10a of the water content detection in the MOISTURE MEASUREMENT SYSTEM involved by embodiment 2
The side view of field distribution when the holding moisture of absorbent member 4 in antenna element 11,12.
Fig. 8 (a) is the diagrammatic perspective of the structure of the RFIC readers in the MOISTURE MEASUREMENT SYSTEM indicated in embodiment 3
Figure, Fig. 8 (b) is the approximate stereogram of the structure for the RFIC readers for indicating other.
Specific implementation mode
Moisture detecting method involved by 1st embodiment makes to be attached at subject, communicate in the presence of moisture
Above-mentioned RFIC devices and above-mentioned RFIC readings are being limited by isolated part apart from changed RFIC devices and RFIC readers
Device apart from while communicated, according to the success or not of above-mentioned communication, detect surrounding's whether there is water of above-mentioned RFIC devices.
According to above structure, moisture can simply and be in high precision detected.
Moisture detecting method involved by 2nd embodiment, it is preferred that in above first embodiment, using in water
The RFIC devices that communication distance shortens in the presence of point are as above-mentioned RFIC devices, in above-mentioned RFIC devices and above-mentioned RFIC
When reader becomes not communicable state, judge that there are moisture around above-mentioned RFIC devices.
According to above structure, RFIC devices can be set as in the presence of moisture at a distance from RFIC readers
The distance of the centre of the front and back communication distance of communication distance variation of the RFIC devices 10 of variation.Thus, it is possible to pass through communication
Success or not detects the presence of moisture.
Moisture detecting method involved by 3rd embodiment, it is preferred that in above-mentioned 1st or the 2nd embodiment, with
Certain centre frequency makes above-mentioned RFIC readers be communicated with above-mentioned RFIC devices.
According to above structure, by making above-mentioned RFIC readers be communicated with above-mentioned RFIC devices with certain centre frequency,
It is easy the not communicable state when centre frequency variation of detection RFIC devices.In addition, the centre frequency in RFIC devices is constant
When change, without making the reading frequency of RFIC readers change.
RFIC readers involved by 4th embodiment have：
The communication unit communicated with RFIC devices；
Limit isolated part of the above-mentioned RFIC devices at a distance from above-mentioned communication unit.
According to above structure, can be stablized by isolated part limitation RFIC devices and the communication unit of RFIC readers away from
From.
RFIC readers involved by 5th embodiment, it is preferred that in above-mentioned 4th embodiment, be also equipped with：It is logical
It crosses above-mentioned isolated part to limit above-mentioned RFIC devices at a distance from above-mentioned communication unit and communicated, according to the success of above-mentioned communication
Whether come judge moisture whether there is or not judging part.
The case where can not being communicated by being detected by judging part, the presence of moisture can be detected.
RFIC readers involved by 6th embodiment, it is preferred that above-mentioned in above-mentioned 4th or the 5th embodiment
Isolated part has the contact component contacted with the subject equipped with above-mentioned RFIC devices.
Isolated part has contact component, therefore, can by making subject of the contact component contact equipped with RFIC devices
It is reliably maintained a certain distance with RFIC devices.
RFIC readers involved by 7th embodiment, it is preferred that in above-mentioned 4th to the 6th any embodiment
In, above-mentioned isolated part is made of insulating material.
It can inhibit to read RFIC devices with RFIC by constituting isolated part with insulating material according to above structure
Read the influence of the communication of device.
MOISTURE MEASUREMENT SYSTEM involved by 8th embodiment is read using the RFIC devices and RFIC for being attached at subject
Device detects surrounding's whether there is water of above-mentioned RFIC devices,
Above-mentioned RFIC devices have：
RFIC elements；
It is connect with above-mentioned RFIC elements and there is the antenna element for capableing of capacity coupled opposing part；And
Absorbent member near the above-mentioned opposing part of above-mentioned antenna element,
Communication distance changes above-mentioned RFIC devices in the presence of moisture,
Above-mentioned RFIC readers have：
The communication unit communicated with above-mentioned RFIC devices；
Limit isolated part of the above-mentioned RFIC devices at a distance from above-mentioned communication unit；And
It is communicated while limiting above-mentioned RFIC devices at a distance from above-mentioned communication unit by above-mentioned isolated part, according to
The success or not of above-mentioned communication come judge moisture whether there is or not judging part.
According to above structure, led to while by isolated part limit RFI C device at a distance from RFIC readers
Letter judges surrounding's whether there is water of RFIC devices according to the success or not of communication, therefore can simply and in high precision detect water
The presence divided.
Hereinafter, being described with reference to the MOISTURE MEASUREMENT SYSTEM involved by embodiment and moisture detecting method.In addition, drawing
In substantially identical component enclose identical symbol.
(embodiment 1)
Fig. 1 (a) is the water content detection RFIC devices 10 in the MOISTURE MEASUREMENT SYSTEM 50 indicated involved by embodiment 1
It is attached at the skeleton diagram of the purposes example of diaper 30.Fig. 1 (b) is that diaper 30 is attached in the MOISTURE MEASUREMENT SYSTEM 50 for indicate Fig. 1 (a)
Water content detection RFIC devices 10 and the restriction state at the interval of RFIC readers 40 skeleton diagram.
MOISTURE MEASUREMENT SYSTEM 50 involved by embodiment 1 is, for example, the RFIC systems using uhf band, using being attached at
The changed RFIC devices 10 of diaper (subject) 30, in the presence of moisture communication distance and RFIC readers 40.
It is communicated while by a distance from 44 limit RFI C device 10 and RFIC readers 40 of isolated part.According to the communication at
Whether work(, surrounding's whether there is water of above-mentioned RFIC devices 10 is detected.Specifically, RFIC devices 10 are using existing for moisture
In the case of the RFIC devices that shorten of communication distance can when RFIC devices 10 and RFIC readers, which become, is unable to communications status
Judge that there are moisture around RFIC devices 10.By isolated part physically limit RFI C device at a distance from RFIC readers,
More specifically, it is the shortest distance of the physically antenna of limit RFI C device and the antenna of RFIC readers.Thus, it is possible to keep away
Exempt from RFIC readers and RFIC devices it is excessively close and as can communicate, thereby while moisture exists and judges by accident and be set to that " moisture is not deposited
".In the MOISTURE MEASUREMENT SYSTEM, for example, can will be at a distance from RFIC devices 10 and RFIC readers 40 by isolated part 44
Be set as the centre of the front and back communication distance of communication distance variation of the RFIC devices 10 changed in the presence of moisture away from
From.Thus, it is possible to which simple and high-precision detects the presence of moisture.
Hereinafter, illustrating each component for constituting the MOISTURE MEASUREMENT SYSTEM 50.
<RFIC devices>
Fig. 2 (a) is the water content detection RFIC devices 10 in the MOISTURE MEASUREMENT SYSTEM 50 indicated involved by embodiment 1
Structure vertical view, Fig. 2 (b) is the summary sectional view for indicating the cross-sectional configuration from the direction of the line A-A of Fig. 2 (a), figure
2 (c) is the equivalent circuit diagram of the water content detection RFIC devices involved by embodiment 1.
The water content detection in MOISTURE MEASUREMENT SYSTEM 50 involved by embodiment 1 has with RFIC devices 10：RFIC elements
1；The 1st antenna element 11 extended in the opposite direction being connect with RFIC elements 1 and the 2nd antenna element 12；Support the 1st antenna element
The absorbent member 2 of part 11 and the 2nd antenna element 12.1st antenna element 11 and the 2nd antenna element 12 are respectively serpentine shape, have energy
Enough capacity coupled multiple opposing parts 13.Opposing part 13 is included in a pair of of sheet material and its gap in antenna element opposite each other.
Absorbent member 2 is to support the substrate sheets 2 of RFIC elements and the 1st antenna element 11 and the 2nd antenna element 12.In addition, such as Fig. 2 (c)
Shown in equivalent circuit diagram, there is RFIC elements the 1, the 1st and the 2nd antenna element 11,12 and capacitor 9.Capacitor 9 for example can also
It is C patterns or the parasitic capacitance in RFIC elements 1.
Fig. 3 (a) is the summary sectional view for the cross-sectional configuration for indicating RFIC elements 1, and Fig. 3 (b) is the equivalent circuit of Fig. 3 (a)
Figure.
RFIC elements 1 have RFIC chip 21 and via electric conductivity fastener 22 and terminal electrode 23 and RFIC chips 21
The multilager base plate 25 of connection.RFIC chip 21 is sealed by sealing resin 24.In addition, in multilager base plate 25, it is built-in with the L such as L1 and L2
Pattern and C1, C2 and CICThe feed circuit that equal C patterns are constituted. CICIt is the parasitic capacitance of RFIC chip 21.By feed circuit shape
At resonance circuit, resonant frequency is corresponding with carrier frequency.In addition, the feed circuit is constituted in defined substrate.By setting
Such feed circuit is set, even if the variation of ambient enviroment can be such that RFIC fills if causing the electrical length of antenna element to change
The centre frequency for setting side does not generate big variation.
If that is, being specified value (such as maximum gain state (2/ by the matching of the electrical length of the antenna element of original state
λ)), it even if then configuring antenna element near human body, although longer communication distance reduces, in certain certain distance, can be read
RFIC devices.If the moisture quantitative change around antenna element is more, the electrical length of antenna element changes, then longer communication distance is into one
Step reduces.For example, for a RFIC device, the longer communication distance of original state is 1~2m, even if being configured near human body
State and ambient enviroment drying in the state of, longer communication distance 20cm, under moisture state, longer communication distance be 3cm with
Under.Thus, make RFIC devices and the longer communication distance (an example of RFIC readers to reduce in the presence of moisture：3cm with
Under) and anhydrous isloation state under longer communication distance (an example：The interval of certain distance such as 5cm between 20cm) is communicated.?
(an example at a certain distance：In communication 5cm), by detecting not communicable state, can detect moisture whether there is or not.Certainly, even if
In the reading that original state (near human body configure before state) can also carry out RFIC devices, therefore, it is possible to high-precision into
Its capable characteristic measurement, screening operation, can also carry out stock control, the logistics management using RFIC devices.In addition, above-mentioned example is
Such as 0.25W output longer communication distance, output etc. variations when, longer communication distance changes certainly.
RFIC elements 1 and the 1st and the 2nd antenna element 11,12 be not limited to such as Fig. 3 (a) and (b) in by terminal electrode 26
Be directly connected to and connect.For example, RFIC elements 1 can not also be only directly to connect with the 1st and the 2nd antenna element 11,12
It connects, can also be any coupling of capacitive coupling, magnetic coupling etc..
In addition, in Fig. 3 (a) and Fig. 3 (b), in RFIC elements 1, it is not limited to the multilager base plate that setting is built-in with feed circuit
25, it is possibility to have the case where being not provided with feed circuit.When being not provided with feed circuit, if set on the 1st and the 2nd antenna element
11, the opposing part 13 on 12 surface keeps moisture, then the electrical length variation of antenna, carrier frequency variation.As a result, with it is dry
When the identical carrier frequency communication of dry state, under water tariff collection state, wireless communication state significantly more changes, wireless communication
Itself becoming can not possibly.Thus, it can more detect moisture.
1st antenna element 11 and the 2nd antenna element 12 be extended in the opposite direction centered on RFIC elements 1 wriggle
The antenna element of shape.1st antenna element 11 and the 2nd antenna element 12 are respectively provided with the serpentine shape of snakelike extension in one direction.
Each antenna element 11,12 has the part parallel with above-mentioned extending direction and vertical part.The part parallel with extending direction
Tool there are one rectangular shape, vertical part also have there are one rectangular shape, the part parallel with extending direction and with extension side
It is connected to vertical part for right angle.In addition, the rectangular shape of the part parallel with extending direction and vertical with extending direction
Partial rectangular shape one fixed width having the same.Moreover, the rectangular shape of the part vertical with extending direction prolongs along above-mentioned
Direction is stretched to configure with certain spacing.
In addition, antenna element is not limited to above-mentioned two, one or more can also be.In addition, extending direction is unlimited
In opposite direction, for example, it is also possible to extend to form mutual right angle.In addition, the 1st antenna element 11 and 12 energy of the 2nd antenna element
Enough multiple return portions by serpentine shape point are used as being capable of capacity coupled multiple opposing parts 13.In addition, being capable of capacity coupled phase
Can also be for example concatenated capacitive coupling or the capacitive coupling of parallel connection to portion 13.In addition, each fragment of antenna element can also
Distinguish capacitive coupling in series.Or, multiple fragments can also be with the fragment of antenna element capacitive coupling in parallel.It is capacity coupled
Opposing part can be the opposing part of series capacitance coupling or the opposing part of shunt capacitance coupling.Thus, it is possible to improve antenna element
Structure flexibility.
1st antenna element 11 and the 2nd antenna element 12 can use the copper foil used in common antenna element, copper coin,
The materials such as copper electroplating film, goldleaf, golden plate, golden electroplating film.Material is not limited to above-mentioned example, can use commonly used material.
Absorbent member 2 can be used such as macromolecule water uptake part (polymer-type absorbent member).Inorganic type can also be used to inhale
Water part.In inorganic type absorbent member, volume change is small, therefore preferably using loam mould as the absorbent member of the Porous type of representative.
Absorbent member 2, which can support, carries RFIC elements 1, the 1st antenna element 11 and the 2nd antenna element 12.Therefore, absorbent member 2
Substrate sheets can be doubled as, the thickness of RFIC devices entirety can be made thinning.In addition, absorbent member 2 itself need not have rigidity
Deng, but with rigidity when, can improve mechanical resistant impact.On the other hand, it if absorbent member 2 has flexibility, can incite somebody to action
RFIC devices 10 attach to curved object.
Fig. 4 be indicate the water content detection RFIC devices 10 of Fig. 2 (a) the 1st and the 2nd antenna element 11,12 wriggle
The skeleton diagram of capacitive coupling 14 when the opposing part 13 of shape includes moisture.In addition, also forming capacitance between open end.
If the absorbent member 2 of the water content detection RFIC devices 10 involved by Fig. 4 illustrated embodiments 1 absorbs moisture,
Capacitive coupling 14 is generated between multiple opposing parts 13 of 1st antenna element 11 and the 2nd antenna element 12, parasitic capacitance becomes larger, causes
The electrical length of 1st and the 2nd antenna element 11,12 changes.As a result, communication distance shown in Fig. 4 shortens, wireless communication state becomes
Change, and wireless communication itself becomes impossible.For example, when substrate sheets 2 are made of macromolecule water uptake part, under non-water suction state
Permittivity ε is 5 or so.Permittivity ε when substrate sheets 2 absorb moisture is about 60.As a result, the 1st and the 2nd day of serpentine shape
The parasitic capacitance of multiple opposing parts 13 of thread elements 11,12 becomes larger, the length variation of antenna.Therefore, communication distance shortens, wirelessly
Communications status changes, and wireless communication itself becomes impossible.By detecting the variation of the wireless communication state, can detect
The presence of moisture.
In addition, the water content detection that communication distance shortens in the presence of the moisture is not limited to state with RFIC devices 10
It is bright the case where so that communication distance is changed due to the capacitive coupling to the 1st and the 2nd antenna element 11,12." moisture there are the case where
The RFIC devices that lower communication distance shortens " also include for example " water content detection of attached humidity sensor RFIC devices ", are constituted
To control output according to humidity.
Furthermore it is also possible to which the output of water content detection RFIC devices 10 can be relayed in the MOISTURE MEASUREMENT SYSTEM 50 setting
And extend can communication range relay antenna.Relay antenna can also be with the 1st or the 2nd day of water content detection RFIC devices 10
At least one party of thread elements 11,12 couples.
Relay antenna is not limited to such as rectilinear form, can also be curve shape.In addition, relay antenna can also be wound on
In diaper 30 or around diaper 30.Relay antenna is preferably the thin types shape such as plate, lamellar, mesh-shape, foil-like, but unlimited
In this.For example, it can be rodlike, linear.
Moreover, relay antenna is made of the conductive material that can radiate electric wave.For example, copper foil, copper can be used
The materials such as plate, copper electroplating film, goldleaf, golden plate, golden electroplating film, aluminium foil, aluminium sheet, aluminium film, silver foil, silver plate, silver-colored electroplating film.Material is not
It is limited to above-mentioned example, can also uses commonly used material.In addition, the formation of film etc. is not limited to be electroplated, can also use
Printing, vapor deposition etc..For example, it is also possible to which the outer surface side in diaper 30 forms the relaying being made of conductive ink by printing technology
Antenna.Furthermore, it is also possible to constitute relay antenna with conducting fibre.For example, it is also possible to polyethylene terephthalate (PET) etc.
Resin sheet or resin film carry out aluminium-vapour deposition, constitute relay antenna.
<RFIC readers>
RFIC readers 40 have：The communication unit 42 communicated with RFIC devices 10；Limit RFI C device 10 and communication unit 42
Distance isolated part 44.In addition, " limiting distance " refers to " RFIC devices 10 being kept one at a distance from communication unit 42
It is fixed ".That is, even if user can be set to same distance if change.
In addition, by isolated part 44, limitation RFIC devices 10 can be stablized at a distance from communication unit 42.For example, even if
Automatic measurement simultaneously shows RFIC devices 10 at a distance from communication unit 42, people be also difficult to only with observation display come be matched to regulation away from
From.Relatively, by using isolated part 44, limitation RFIC devices 10 can simply be stablized at a distance from communication unit 42.Separately
Outside, by isolated part 44, for example, can will be set as existing for moisture at a distance from RFIC devices 10 and RFIC readers 40
In the case of the front and back longer communication distance (an example of the communication distance variation of RFIC devices 10 that changes：20cm before variation, after variation
3cm or less) intermediate distance (an example：5cm).In addition, in Fig. 1 (a), Fig. 1 (b), isolated part 44 is rodlike, is only limited single
Distance, but not limited to this, can also by the multistage limit RFI C device 10 of isolated part 44 and RFIC readers 40 away from
From.Isolated part 44 is not easy to hinder the transmission of electromagnetic wave, therefore is preferably made of insulating material.Thus, it is possible to inhibit pair
The influence of RFIC devices 10 and the communication of RFIC readers 40.
In addition, RFIC readers 40 are preferably handheld, but it is not limited to handheld, can also be fixed.
In addition, as described above, equipped with can relay RFIC devices 10 output and extension can communication range relay antenna
When, at a distance from RFIC devices 10 and RFIC readers 40, relay antenna may become at a distance from RFIC readers 40
It is short.Thus, with RFIC devices 10 compared at a distance from RFIC readers 40, relay antenna shortens at a distance from RFIC readers 40
When, by isolated part 44, do not limit at a distance from RFIC devices 10, and alternatively limit at a distance from relay antenna.
In addition, RFIC readers 40 can also have：Pass through 44 limit RFI C device 10 of isolated part and RFIC readers
40 apart from while communicated, according to the success or not of communication come judge moisture whether there is or not judging part (not shown).Judge
Portion can also judge the presence for detecting moisture for example after detecting and can not communicate.Moreover, isolated part 44 can also have
The contact component contacted with diaper (subject) 30.In general, RFIC readers 40 are relative to the non-contact use of subject.Thus,
It is difficult to RFIC readers keeping certain at a distance from subject.As described above, when isolated part 44 has contact component, lead to
Crossing makes subject be contacted with contact component, can reliably maintain a certain distance.
When RFIC readers 40 are communicated with RFIC devices 10, can also for drying regime and water tariff collection state,
Centre frequency is set to change.Or, can also be communicated with certain centre frequency for drying regime and water tariff collection state.
When being difficult to change the centre frequency of RFIC devices 10 by RFIC elements 1, in drying regime and water tariff collection state, with certain
Centre frequency communication.On the other hand, in drying regime and water tariff collection state, even if the centre frequency of RFIC devices 10
When significant changes, by being communicated with certain centre frequency in drying regime and water tariff collection state, big change can be also detected
Change.
In addition, the judgement of the state of " can not communicate " is as be described hereinafter, can be judged by the success or not once communicated, or
Judged by the number of the success or not repeatedly communicated.Moreover, the counting about wireless communication success or not, it can also be in nothing
The number of method communication is judged as to communicate when reaching the number of predetermined threshold or more, and the presence of moisture is detected by RFIC devices 10
State.
Fig. 5 is the moisture detecting method in the purposes example of the water content detection RFIC devices 10 for Fig. 2 that diaper 30 is installed
Flow chart.In the moisture detecting method, it is assumed that worn the diaper 30 for being pasted with water content detection RFIC devices 10 by caregiver.
(1) while the interval of limitation water content detection RFIC devices 10 and RFIC readers 40, water content detection is made to use
RFIC devices 10 communicate (S01) with RFIC readers 40.RFIC readers 40 can be fixed, can also be handheld.Separately
Outside, for example, it is also possible to which the isolated part 44 of specific length is arranged in the lower part of the communication unit 42 of RFIC readers 40, water is limited
Sorting surveys the interval with RFIC devices 10 and RFIC readers 40.
(2) judge whether water content detection RFIC devices 10 can communicate (S02) with RFIC readers 40.
(3) if water content detection is with RFIC devices 10 become that (no) can not be communicated with RFIC readers 40, judge that moisture is examined
There are moisture (S03) around survey RFIC devices 10.In this case, there are moisture, that is, urine or stool etc. in diaper 30.
(4) on the other hand, if water content detection can communicate (YES) with RFIC devices 10 with RFIC readers 40, judge
Moisture (S04) is not present in the periphery of water content detection RFIC devices 10.In this case, there is not yet moisture in diaper 30.
In addition, the moisture of the success or not based on communication there are nothing judge can be by the success or not that once communicates
Judge, or the number of the success or not by repeatedly communicating judges.Moreover, the counting about wireless communication success or not, also may be used
To be judged as to communicate when reaching the number of predetermined threshold or more in the number that can not be communicated, moisture is detected by RFIC devices 10
Existence.Alternatively, it is also possible to show the moisture state in diaper 30 in RFIC readers 40.Alternatively, it is also possible to need not be into
The display of row moisture state, for example, it is also possible to notify the presence of moisture by flicker of lamp etc..
More than, it can be by using the water content detection side of the MOISTURE MEASUREMENT SYSTEM 50 comprising water content detection RFIC devices 10
Method detects moisture.
As described above, MOISTURE MEASUREMENT SYSTEM involved by embodiment 1 and using in its moisture detecting method, in diaper
30 installation water content detection RFIC devices 10.Specifically, by isolated part 44 limit water content detection RFIC devices 10 with
While the interval of RFIC readers 40, water content detection RFIC devices 10 is made to be communicated with RFIC readers 40.Water content detection is used
If RFIC devices 10 become to be not available for communicating with RFIC readers 40, it is able to detect that water content detection RFIC devices 10
Around moisture.Thus, it is possible to detect moisture state caused by urine or the stool or sweat etc. in diaper 30.In addition, due to
Using RFIC devices, therefore expensive components as Humidity Detection semiconductor transducer need not be used, it can be with inexpensive structure
At.In addition, structure itself is simple, therefore reliability is also high.In addition, suction of the water imbibition of RFIC devices 10 preferably with diaper 30
Aqueous same or higher.If the water imbibition of RFIC devices 10 is lower than diaper 30, the detection performance of moisture reduces.
In addition, among the above, as MOISTURE MEASUREMENT SYSTEM 50 and the purposes example of moisture detecting method, illustrating to pacify in diaper 30
The case where filling water content detection RFIC devices 10, but it is not limited to such use example.For example, it is also possible to as in the outside of water pipe
RFIC devices 10 are attached to detect the RFIC devices of the leak water detdction of leak.
(embodiment 2)
Fig. 6 (a) is the side view of the water content detection RFIC devices 10a in the MOISTURE MEASUREMENT SYSTEM involved by embodiment 2
Figure, Fig. 6 (b) is the vertical view of the RFIC devices 10a of Fig. 6 (a), and Fig. 6 (c) is the ground plan of the RFIC devices 10a of Fig. 6 (a).
Fig. 7 is to indicate to be protected by the absorbent member 4 of RFIC devices 10a of the water content detection in the MOISTURE MEASUREMENT SYSTEM involved by embodiment 2
The side view of field distribution in the antenna element 11,12 of water holding timesharing.
The water content detection is used with the water content detection in the MOISTURE MEASUREMENT SYSTEM involved by RFIC devices 10a and embodiment 1
RFIC devices compare, the difference lies in that the 1st antenna element 11 and the 2nd antenna element 12 not instead of serpentine shape, elongated square
Shape shape is rodlike.In addition, difference also resides in, absorbent member 4 is not direct with the 1st antenna element 11 and the 2nd antenna element 12
Contact is set as being connected across the 1st antenna element 11 and the 2nd antenna element 12 but via difficult absorbent member (or unwetted part) 2a
Gap portion.Moreover, the water content detection is in RFIC devices 10a, and further, the water content detection RFIC devices 10a and reality
The water content detection applied in the MOISTURE MEASUREMENT SYSTEM involved by mode 1 is compared with RFIC devices, the difference lies in that by the 1st antenna element
The gap portion of part 11 and the 2nd antenna element 12 is set as being capable of capacity coupled opposing part 15.In addition, as shown in fig. 7, by
Water is kept in the corresponding absorbent member of the opposing part 15 of gap portion between the 1st antenna element 11 and the 2nd antenna element 12 4
Point, the electric field of the 1st antenna element 11 and the 2nd antenna element 12 can be made to focus on gap portion 15.In this case, the 1st antenna
Electric field other than the gap portion 15 of element 11 and the 2nd antenna element 12 dies down, and can substantially extend electrical length.In Fig. 7,
The power line 16a of gap portion 15 is shown as thick line, indicates electric-field strength, and the power line 16b other than gap portion 15 is aobvious with dotted line
Show, indicates that electric field is weak.To by being set as being connected across the gap portion 15 of the 1st antenna element 11 and the 2nd antenna element 12
Absorbent member 4 keeps moisture, to which water content detection is shortened with the communication distance of RFIC devices 10a.
In addition, water content detection RFIC devices 10a and patent text in MOISTURE MEASUREMENT SYSTEM involved by embodiment 2
The wireless IC device for offering 1 record compares, in the wireless IC device recorded in patent document 1, in feed circuit substrate and antenna
Between between be separated with insulating materials.Thus, when ambient humidity changes, electromagnetic coupling of feed circuit and antenna itself may hair
Changing.
Relatively, the water content detection in the MOISTURE MEASUREMENT SYSTEM involved by embodiment 2 is in RFIC devices 10a, and special
Wireless IC device recorded in sharp document 1 the difference lies in that between RFIC elements 1 and the 1st and the 2nd antenna element 11,12
Moisture is absorbed, it is not spaced to have the insulating materials for making electromagnetic coupling change.When absorbent member 4 maintains moisture, only gap portion
Electric field change, the electromagnetic coupling of RFIC elements 1 and antenna 11,12 is not influenced, therefore, as water content detection RFIC devices
Stable performance can be presented in 10a.Thus there is high reliability.
The absorbent member 4 can be set as being connected across the gap portion (opposing part) of the 1st antenna element 11 and the 2nd antenna element 12
15.Here, gap portion (opposing part) of the absorbent member 4 across difficult absorbent member 2a direction the 1st antenna element and the 2nd antenna element
15.In this case, absorbent member 4 is alternatively set near opposing part 15.
In addition, absorbent member 4 can also be set to it is whole comprising the 1st antenna element 11 and the opposing part 15 of the 2nd antenna element 12
In a range.Only when the entirety including the opposing part 15 comprising the 1st antenna element 11 and the 2nd antenna element 12, nothing
Method obtains the electric field concentration effect to opposing part 15, and the influence to communication distance is little.Thus, absorbent member 4 is preferably set to the 1st day
2/3 or less whole of thread elements 11 and the 2nd antenna element 12.
In addition, absorbent member 4 can use the paper or fabric, such as gauze, cotton paper etc. that the fiber for being insoluble in water is constituted.This
Outside, above-mentioned absorbing material can also be used.Absorbent member 4 can also be pasted by the bottom surface side to difficult absorbent member 2a, is solid
Fixed, spraying, printing, impregnating are arranged.The method that absorbent member 4 is arranged is not limited to above-mentioned example, can also generally use method
Absorbent member 4 is arranged.Absorbent member 4 can keep moisture inside it, and can also include moisture on the surface of absorbent member 4.
Absorbent member 4 is preferably able to long time retaining water content.
(embodiment 3)
Fig. 8 (a) is that the outline of the structure of the RFIC readers 40a in the MOISTURE MEASUREMENT SYSTEM indicated in embodiment 3 is vertical
Body figure, Fig. 8 (b) are the approximate stereograms of the structure for the RFIC readers 40b for indicating other.
RFIC readers 40a has：The communication unit 42 communicated with RFIC devices with water content detection；Limit moisture inspection
It surveys and uses isolated part 44a of the RFIC devices at a distance from communication unit 42.Involved by isolated part 44a and embodiment 1
The isolated part of RFIC readers compares, and difference is to be made of the padded coaming with flexibility.Isolated part 44a has
Flexibility, therefore, even if isolated part 44a encounters the diaper for being pasted with RFIC devices 10, to be also by care-giver it is mild,
It will not feel well.
In addition, the RFIC readers 40a comparisons of other RFIC readers 40b and Fig. 8 (a) shown in Fig. 8 (b), different
Point is that isolated part 44b is hollow, is only made of frame.In this way, isolated part 44b is only hollow frame, therefore,
It can inhibit influences of the isolated part 44b to the signal from RFIC devices.
In addition, isolated part is not limited to shown in Fig. 8 (a), Fig. 8 (b), as long as being capable of limit RFI C device and RFIC readers
Communication unit distance.For example, it is also possible to which the face contacted with diaper is set as netted, impact when collision is mitigated, will be propped up
Support part is divided into only frame.
In addition, when the water content detection in MOISTURE MEASUREMENT SYSTEM is used as RFID tag with RFIC devices, can be used for
Any frequency bands such as LF frequency ranges, HF frequency ranges, uhf band, SHF frequency ranges.In addition, RFIC devices are represented as RFID tag, but it is unlimited
In with so-called label function, it is possible to have other functions such as read-write capability.
In addition, in the disclosure, including the arbitrary embodiment in aforementioned various embodiments and embodiment and/or embodiment
Proper combination, can realize the effect that each embodiment and/or embodiment have.
Industrial practicability
In water content detection method involved by the utility model, make to be attached at subject, in the presence of moisture
The changed RFIC devices of communication distance are passing through isolated part limit RFI C device and RFIC readers with RFIC readers
Apart from while communicated, according to the success or not of communication, detect whether there is water around RFIC devices.Thus, it is possible to simple
Easily and high-precision detects moisture, is suitable for the water content detection of diaper, the leak water detdction etc. of piping.
【Label declaration】
1 RFIC elements
2 absorbent members (substrate sheets)
2a difficulties absorbent member (substrate sheets)
3 antenna patterns
4 absorbent members
10,10a water content detections RFIC devices
11 the 1st antenna elements
12 the 2nd antenna elements
13 opposing parts
14 capacitive couplings
15 opposing parts
16a, 16b power line
21 RFIC chips
22 electric conductivity fasteners
23 terminal electrodes
24 sealing resins
25 multilager base plates
26a, 26b terminal electrode
30 diapers (subject)
40,40a, 40b reader
42 communication units
44,44a, 44b isolated part
50 MOISTURE MEASUREMENT SYSTEMs
Claims (11)
1. a kind of RFIC readers, which is characterized in that have：
The communication unit communicated with the RFIC devices set on the subject as water content detection object；
Limit the RFIC devices between the communication unit at a distance from isolated part.
2. RFIC readers described in claim 1, which is characterized in that be also equipped with：
By the isolated part limit the RFIC devices between the communication unit at a distance from while communicated, according to institute
The success or not of communication is stated to determine whether the judging part of moisture.
3. RFIC readers as claimed in claim 1 or 2, which is characterized in that
The isolated part has the contact component contacted with the subject equipped with the RFIC devices.
4. RFIC readers as claimed in claim 1 or 2, which is characterized in that
The isolated part is made of insulating material.
5. RFIC readers as claimed in claim 1 or 2, which is characterized in that
The isolated part has flexibility.
6. RFIC readers as claimed in claim 1 or 2, which is characterized in that
The subject is diaper.
7. the RFIC readers described in claim 6, which is characterized in that
It is equipped with the relay antenna for the output for relaying the RFIC devices in the diaper.
8. a kind of MOISTURE MEASUREMENT SYSTEM, using RFIC devices and the RFIC reading being attached at as the subject of water content detection object
Device detects surrounding's whether there is water of the RFIC devices, which is characterized in that
The RFIC devices have：
RFIC elements；
It is connect with the RFIC elements and there is the antenna element for capableing of capacity coupled opposing part；And
Absorbent member near the opposing part of the antenna element,
Communication distance changes the RFIC devices in the presence of moisture,
The RFIC readers have：
The communication unit communicated with the RFIC devices；
Limit the RFIC devices between the communication unit at a distance from isolated part；And
By the isolated part limit the RFIC devices between the communication unit at a distance from while communicated, according to institute
The success or not of communication is stated to determine whether the judging part of moisture.
9. MOISTURE MEASUREMENT SYSTEM according to any one of claims 8, which is characterized in that
The isolated part has flexibility.
10. the MOISTURE MEASUREMENT SYSTEM described in claim 8 or 9, which is characterized in that
The subject is diaper.
11. MOISTURE MEASUREMENT SYSTEM according to any one of claims 10, which is characterized in that
It is equipped with the relay antenna for the output for relaying the RFIC devices in the diaper.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015104645 | 2015-05-22 | ||
| JP2015-104645 | 2015-05-22 | ||
| PCT/JP2016/062407 WO2016190008A1 (en) | 2015-05-22 | 2016-04-19 | Moisture detection method, rfic reader, and moisture detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208077182U true CN208077182U (en) | 2018-11-09 |
Family
ID=57394079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201690000828.XU Active CN208077182U (en) | 2015-05-22 | 2016-04-19 | RFIC readers and MOISTURE MEASUREMENT SYSTEM |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6278156B2 (en) |
| CN (1) | CN208077182U (en) |
| WO (1) | WO2016190008A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019096412A1 (en) | 2017-11-17 | 2019-05-23 | Essity Hygiene And Health Aktiebolag | A hygiene monitoring system |
| WO2019096414A1 (en) | 2017-11-17 | 2019-05-23 | Essity Hygiene And Health Aktiebolag | Hygiene monitoring systems and methods |
| EP4131072A1 (en) * | 2019-05-29 | 2023-02-08 | Avery Dennison Retail Information Services LLC | Radio frequency identification (rfid) tags for metallic and three-dimensional (3d) objects and methods of making and using thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004362170A (en) * | 2003-06-03 | 2004-12-24 | Nippon Signal Co Ltd:The | Roller type reader/writer |
| JP4719767B2 (en) * | 2008-05-02 | 2011-07-06 | 東日本電信電話株式会社 | Inspection terminal |
| JP4815643B1 (en) * | 2010-04-16 | 2011-11-16 | 幸裕 福島 | UHF band IC tag for urine sensor and HF band IC tag for urine sensor |
| TWI431534B (en) * | 2011-11-16 | 2014-03-21 | Ind Tech Res Inst | Radio frequency identification tag and diaper, absorber and sensing system using the same |
| TWI533857B (en) * | 2013-09-14 | 2016-05-21 | Diaper structure and diaper detection system with wireless detection of wet state |
-
2016
- 2016-04-19 WO PCT/JP2016/062407 patent/WO2016190008A1/en active Application Filing
- 2016-04-19 JP JP2017520294A patent/JP6278156B2/en active Active
- 2016-04-19 CN CN201690000828.XU patent/CN208077182U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016190008A1 (en) | 2016-12-01 |
| JPWO2016190008A1 (en) | 2018-02-15 |
| JP6278156B2 (en) | 2018-02-14 |
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