CN110942131A - RFID temperature measurement tag, control method and application device - Google Patents
RFID temperature measurement tag, control method and application device Download PDFInfo
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- CN110942131A CN110942131A CN201910946304.XA CN201910946304A CN110942131A CN 110942131 A CN110942131 A CN 110942131A CN 201910946304 A CN201910946304 A CN 201910946304A CN 110942131 A CN110942131 A CN 110942131A
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- rfid
- temperature measurement
- rfid temperature
- temperature measuring
- antenna
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000010606 normalization Methods 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000020095 red wine Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
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Classifications
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- 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
- G06K19/0716—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 at least one of the integrated circuit chips comprising a sensor or an interface to a sensor
- G06K19/0717—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 at least one of the integrated circuit chips comprising a sensor or an interface to a sensor the sensor being capable of sensing environmental conditions such as temperature history or pressure
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisions for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses an RFID temperature measurement label, a control method and an application device, comprising a PCB circuit board, wherein a notch is formed on the PCB circuit board, and the RFID temperature measurement label also comprises: the signal transceiving component comprises at least one ocean antenna which is arranged on one side of the PCB; the RFID temperature measuring chip is embedded in the notch, and any side of the RFID temperature measuring chip is attached to an object to be measured; and the internal resonance LC coil is connected with the at least one ocean antenna and is used for matching the impedance of the RFID temperature measuring chip and the antenna. The RFID temperature measurement tag has the beneficial effects that the RFID temperature measurement tag carries out directional design according to the characteristics of a temperature measurement scene and the characteristics of a temperature measurement RFID chip.
Description
Technical Field
The invention relates to improvement of a radio frequency identification technology, in particular to an RFID temperature measurement tag, a control method and an application device.
Background
The Radio Frequency Identification (RFID) technology is a non-contact automatic Identification technology, and transmits signals in an electromagnetic wave or inductive manner to automatically identify a target object. Compared with the traditional RFID technology, the RFID technology has the advantages of no need of manual intervention in the identification process, capability of identifying a plurality of targets simultaneously, large information storage capacity, capability of working in various severe environments and the like.
However, the information content of the existing passive RFID technology is too single, and the environment sensor technology is not fused with the existing passive RFID technology. In the scene of the existing internet of things, the goods are transported to require the RFID technology to judge the goods information, but the goods need to monitor the temperature at the same time, and if the cold chain scene is adopted, a manufacturer can monitor the temperature by adopting a mode of additionally installing a temperature sensor on the goods, so that the cost is greatly increased.
Under the background, the invention discloses an RFID temperature measurement label specially used for a temperature measurement scene based on the existing temperature measurement RFID chip, and the RFID temperature measurement label is mainly different from the traditional RFID label in that the RFID temperature measurement label carries out directional design according to the characteristics of the temperature measurement scene and the characteristics of the temperature measurement RFID chip.
Disclosure of Invention
The invention aims to solve the problems and designs an RFID temperature measurement tag, a control method and an application device.
The technical scheme of the invention is that the RFID temperature measurement label is adhered to an object to be measured in a structural member extrusion mode by adopting double-sided adhesive tape, comprises a PCB (printed circuit board), and is characterized in that a notch is formed on the PCB, and the RFID temperature measurement label also comprises:
the signal transceiving component comprises at least one ocean antenna which is arranged on one side of the PCB;
the RFID temperature measuring chip is embedded in the notch, and any side of the RFID temperature measuring chip is attached to an object to be measured; both sides of the RFID temperature measurement chip have temperature measurement functions.
And the internal resonance LC coil is connected with the at least one ocean antenna and is used for matching the impedance of the RFID temperature measuring chip and the antenna.
The signal transceiving part comprises a pair of ocean antennas, and the pair of ocean antennas are respectively connected with the inner resonance LC coil and are symmetrical about the inner resonance LC coil.
Preferably, the ocean antenna includes a bent portion and a wave portion, and the bent portion and the wave portion are integrally formed.
Preferably, one end of the wave part is connected with the ocean antenna.
Preferably, at least one space avoiding area is formed on the inner resonance LC coil, and the surface of the PCB circuit board corresponding to the space avoiding area forms the notch.
Preferably, three keep away the dead zone on the internal resonance LC coil, three keep away the dead zone and end to end in proper order and form and keep away the empty passageway, keep away the dead zone corresponding PCB circuit board surface and form the breach groove.
Preferably, the RFID temperature measurement tag is made of a heat-conducting material. The substrate and the chip have a heat conduction function, and the heat conduction material is copper or silicon.
A method for installing the RFID temperature measurement tag specifically comprises the following steps: the RFID temperature measurement label is attached to the surface of an object to be measured, and the RFID temperature measurement chip of the RFID temperature measurement label is in direct contact with the surface of the object to be measured.
A control method of the RFID temperature measurement tag comprises the following steps:
temperature measurement: detecting the temperature information of an object to be detected attached to the surface of the RFID temperature measuring chip by utilizing a heat transfer principle, and converting the temperature information and the ID information into radio frequency signals;
signal docking: receiving the radio frequency signal in the temperature measuring step by using an external reader-writer;
normalization of reading distance parameters: and (3) summarizing the labels of all the materials according to different corresponding reading distances of the temperature measurement labels made of different materials, and normalizing after summarizing the reading distances uniformly so as to obtain a curve of the relation between the reading distances and the temperature.
Preferably, the RFID temperature measuring core receives radio frequency signal energy sent by an external reader-writer, and the internal resonance LC coil is used for electrifying and activating the RFID temperature measuring core.
Utilize foretell device that RFID temperature measurement label carries out temperature measurement, the device includes cold chain conveyer, electric power system device, laboratory paraphernalia.
The RFID temperature measurement tag, the control method and the application device manufactured by the technical scheme of the invention have the following beneficial effects:
combining the RFID technology with the temperature measurement technology;
the passive RFID temperature measurement is adopted, so that the cost of single temperature measurement is greatly reduced;
the passive RFID is adopted, and power supply is not needed, so that the problem that power supply is needed for single temperature measurement is solved;
greatly prolongs the service life of the label without power supply
The antenna design enables the tag to be miniaturized and the sensing distance to be increased.
An active temperature measurement mode is adopted in the prior art, the existing RFID label needs to be powered by a battery, so that the cost of a single label is greatly increased, and the price of one battery is about 3 yuan. By adopting the technology in the patent, the battery is not needed, the real passive temperature measurement is realized, the temperature measurement cost of the single label is greatly reduced, the temperature measurement cost of the single label is only within 1 yuan, and the range of applicable scenes is expanded;
the technology combines a passive RFID technology and a temperature measuring technology, combines a temperature measuring sensor and the RFID into one chip, does not need power supply, can activate the chip and a temperature measuring sensing part only by micro energy of electromagnetic waves, returns the information of the temperature measuring sensing part through the electromagnetic waves, and realizes reading of temperature information. The method cannot be realized in the prior art, multiple chips are needed, and a battery is added for supplying power, so that the cost of single temperature measurement is increased. By adopting the technology in the patent, temperature measurement can be carried out without any battery power supply, and the cost of single temperature measurement is greatly reduced.
Drawings
FIG. 1 is a front view of an RFID temperature measuring tag provided in an embodiment of the present invention;
FIG. 2 is a rear view of an RFID temperature tag of the present invention;
FIG. 3 is a temperature error curve within the range of the RFID temperature measurement tag
FIG. 4 is a graph showing the relationship between the reading distance of the normalized RFID temperature measurement tag and the temperature
FIG. 5 shows a usage scenario of an RFID temperature measurement tag.
FIG. 6 is a schematic diagram of the connection of internal modules of the RFID temperature measurement chip.
1. RFID temperature measurement chip 2, ocean antenna 3, PCB circuit board
4. Internal resonance LC coil
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The first embodiment is as follows:
the invention is described in detail with reference to the accompanying drawings, and an RFID temperature measurement tag includes a PCB 3, a notch is formed on the PCB 3, and the RFID temperature measurement tag further includes: a signal transceiving component comprising at least one ocean antenna 2 disposed at one side of a PCB circuit board 3; the RFID temperature measuring chip 1 is embedded in the notch, and any side of the RFID temperature measuring chip is attached to an object to be measured; and the internal resonance LC coil 4 is connected with the at least one ocean antenna and is used for matching the impedance of the RFID temperature measuring chip and the antenna.
As shown in fig. 6, the RFID temperature measurement chip 4 is a control unit of the tag, and functions to detect the ambient temperature, and the internal structure of the RFID temperature measurement chip 4 includes a logic control module, an RF interface module, a temperature sensor module, an EEPROM module, and 4 modules, and the working principle is as follows:
when the RFID temperature measurement chip 4 works, the temperature sensor module is used for collecting temperature and writing information into a readable and writable memory of the data storage module, and the chip sends the information which is rewritten in real time to the RFID reader-writer; the ocean antenna 2 is connected with two interfaces of RF1 and RF2 of the RFID temperature measuring chip 4, wherein the NC interface is a debugging interface and used for converting temperature information and ID information into radio frequency signals. The power supply of the RFID temperature measuring chip 4 is provided by the received radio frequency signal; the internal resonance LC coil 4 is responsible for matching the impedance of the RFID temperature measuring chip and the antenna; the far field antenna 2, which is primarily responsible for the transmission of radio frequency signals.
In the present technical solution, the signal transceiving means further includes a pair of ocean antennas 2, which are respectively connected to the inner resonant LC coil 4 and are symmetrical with respect to the inner resonant LC coil 4.
In this technical scheme, further, ocean antenna 2 is including bending portion and wave portion, bending portion and wave portion integrated into one piece, wave portion and one end be connected with ocean antenna.
In the technical scheme, further, at least one space avoiding region is formed on the inner resonance LC coil 4, and the surface of the PCB circuit board 3 corresponding to the space avoiding region forms the notch.
In the technical scheme, further, three keep away dead zones are formed on the inner resonance LC coil 4, the three keep away dead zones are sequentially connected end to form a keep away passageway, and the surface of the PCB circuit board 3 corresponding to any keep away dead zone forms the notch.
The RFID temperature measurement label is made of a heat-conducting material.
In the working process of the RFID temperature measurement chip 4 in actual operation, when the external reader sends a radio frequency signal, the RF interface module receives the radio frequency signal first. The RF interface module receives a radio frequency signal, firstly, the chip is electrically activated, and the chip demodulates the received signal. The RF interface module transfers the demodulated information to the logic control module, and the read-write control and access control part in the logic control module transfers the information between the modules. The logic control module firstly carries out label anti-collision judgment on the received signals, and if the labels are judged to be anti-collision, the logic control module starts to work. The logic control module extracts the label ID information stored in the EEPROM module, extracts the temperature information measured by the temperature sensor module, and sends the two extracted information to the RF interface module, wherein the specific sending mode is carried out by the read-write control function of the logic control module. The information received by the RF interface is modulated, and the modulated signal is transmitted by radio frequency through two pins of RF1 and RF 2. And the external reader-writer receives the signal sent by the label to complete one round of information exchange.
The manufacturing process of the antenna can adopt the following steps: manufacturing the antenna by three manufacturing processes of FPC, inlay and PCB; the FPC process is a flexible circuit board, also called FPC flexible board, which is a printed circuit made of flexible insulating base materials; wherein the inlay process is a pre-lamination process for laminating a plurality of PVC sheets containing chips and coils together; wherein the PCB process is a printed circuit board process.
Example two:
an installation method of an RFID temperature measurement tag described in the first embodiment includes: the RFID temperature measurement label is attached to the surface of an object to be measured, and the RFID temperature measurement chip of the RFID temperature measurement label is in direct contact with the surface of the object to be measured.
Example three:
a method for controlling an RFID temperature measurement tag according to an embodiment, includes:
temperature measurement: detecting the temperature information of an object to be detected attached to the surface of the RFID temperature measuring chip by utilizing a heat transfer principle, and converting the temperature information and the ID information into radio frequency signals;
signal docking: receiving the radio frequency signal in the temperature measuring step by using an external reader-writer;
normalization of reading distance parameters: and summarizing the labels of all the materials according to different corresponding reading distances of the temperature measurement labels made of different materials, and normalizing after summarizing the reading distances uniformly. And then obtaining a curve of the relation between the reading distance and the temperature.
And the RFID temperature measuring core receives the radio frequency signal energy sent by an external reader-writer, and the internal resonance LC coil 4 is utilized to electrify and activate the RFID temperature measuring core.
Example four:
the device for measuring temperature by using the RFID temperature measurement tag described in the first embodiment includes a cold chain transportation device, a power system device, and a laboratory device.
As shown in fig. 5: therefore, the label is suitable for the use scene at present, the left side is the industry, and the right side is the actual use product.
Such as: in cold chain transportation, the label made of the chip is attached to cold chain transportation products such as vaccines, blood bags, beef, red wine and the like, so that the temperature of the transported products can be monitored in real time. The temperature corresponds to the product one by one, and errors can be avoided.
Such as: in the power system, the label is attached to the position, so that the temperature can be monitored in real time, the fire can be avoided, and whether the circuit is damaged or not can be judged through the temperature.
Such as: in the laboratory, it is applicable in medical laboratory, chemical laboratory, biological laboratory etc. carries out temperature monitoring to reagent and sample in the laboratory, prevents the experimental accident that leads to by the laboratory product custody is improper.
Such as: in animal husbandry, can carry out real-time supervision to biological body surface temperature, discover the epidemic situation in advance, keep apart, also can promote output through the big data of temperature.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a RFID temperature measurement label, includes PCB circuit board (3), its characterized in that, form the opening groove on the PCB circuit board, this RFID temperature measurement label still includes:
a signal transceiving component comprising at least one ocean antenna (2) disposed on one side of a PCB circuit board (3);
the RFID temperature measuring chip (1) is embedded in the notch, and any side of the RFID temperature measuring chip is attached to an object to be measured;
and the internal resonance LC coil (4) is connected with the at least one ocean antenna and is used for matching the impedance of the RFID temperature measuring chip and the antenna.
2. An RFID temperature measuring tag according to claim 1, characterized in that the signal transceiving means comprises a pair of ocean antennas (2) which are respectively connected to the inner resonant LC coil (4) and are symmetrical with respect to the inner resonant LC coil (4).
3. The RFID temperature measuring tag according to claim 1 or 2, characterized in that the ocean antenna (2) comprises a bending part and a wave part, and the bending part and the wave part are integrally formed.
4. The RFID temperature measuring tag of claim 3, wherein the wavy portion is connected to an ocean antenna at one end.
5. The RFID temperature measurement tag according to claim 2, wherein at least one space avoiding area is formed on the inner resonance LC coil (4), and the surface of the PCB (3) corresponding to the space avoiding area is provided with the notch.
6. The RFID temperature measurement tag according to claim 5, wherein three keep-out areas are formed on the inner resonance LC coil (4), the three keep-out areas are sequentially connected end to form a keep-out channel, and the surface of the PCB (3) corresponding to any keep-out area forms the notch.
7. The RFID thermometric tag of claim 6, wherein the RFID thermometric tag is a tag made of a thermally conductive material.
8. The method for installing the RFID temperature measurement tag according to any one of claims 1 to 7, which is characterized in that the method specifically comprises the following steps: the RFID temperature measurement label is attached to the surface of an object to be measured, and the RFID temperature measurement chip of the RFID temperature measurement label is in direct contact with the surface of the object to be measured.
9. A control method applied to the RFID thermometric tag according to any one of claims 1-7, the method comprising the steps of:
temperature measurement: detecting the temperature information of an object to be detected attached to the surface of the RFID temperature measuring chip by utilizing a heat transfer principle, and converting the temperature information and the ID information into radio frequency signals;
signal docking: receiving the radio frequency signal in the temperature measuring step by using an external reader-writer;
normalization of reading distance parameters: and summarizing the labels of all the materials according to different corresponding reading distances of the temperature measurement labels made of different materials, and normalizing after summarizing the reading distances uniformly.
Preferably, the method further comprises a power supply step, wherein the power supply step specifically comprises the steps of receiving radio frequency signal energy sent by an external reader-writer through the RFID temperature measuring core, and electrifying and activating the RFID temperature measuring core by using the internal resonance LC coil (4).
10. The device for measuring temperature by using the RFID temperature measuring tag according to any one of claims 1 to 7, wherein the device comprises a cold chain transportation device, a power system device and laboratory equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910946304.XA CN110942131A (en) | 2019-10-04 | 2019-10-04 | RFID temperature measurement tag, control method and application device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910946304.XA CN110942131A (en) | 2019-10-04 | 2019-10-04 | RFID temperature measurement tag, control method and application device |
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| CN110942131A true CN110942131A (en) | 2020-03-31 |
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| CN201910946304.XA Pending CN110942131A (en) | 2019-10-04 | 2019-10-04 | RFID temperature measurement tag, control method and application device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112381199A (en) * | 2020-10-22 | 2021-02-19 | 上海中卡智能卡有限公司 | Disposable passive RFID tag for temperature detection |
| CN113865749A (en) * | 2020-06-12 | 2021-12-31 | 厦门超新芯科技有限公司 | Temperature measurement bracelet and temperature measurement system based on RFID temperature measurement label |
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| 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 |
| CN207895484U (en) * | 2018-01-29 | 2018-09-21 | 厦门艾欧特科技有限公司 | A kind of temperature detection electronic tag applied to cold chain |
| CN211319268U (en) * | 2019-10-04 | 2020-08-21 | 海王数据信息技术(天津)有限公司 | RFID temperature measurement label, temperature measuring device |
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2019
- 2019-10-04 CN CN201910946304.XA patent/CN110942131A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101752648A (en) * | 2008-11-28 | 2010-06-23 | 航天信息股份有限公司 | Broadband RFID UHF antenna and label with and manufacture method |
| 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 |
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| CN113865749A (en) * | 2020-06-12 | 2021-12-31 | 厦门超新芯科技有限公司 | Temperature measurement bracelet and temperature measurement system based on RFID temperature measurement label |
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| CN112381199B (en) * | 2020-10-22 | 2024-03-22 | 上海中卡智能卡有限公司 | Disposable passive RFID tag for temperature detection |
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