CN110619381A - Label with frequency changing along with humidity and manufacturing method - Google Patents
Label with frequency changing along with humidity and manufacturing method Download PDFInfo
- Publication number
- CN110619381A CN110619381A CN201910932252.0A CN201910932252A CN110619381A CN 110619381 A CN110619381 A CN 110619381A CN 201910932252 A CN201910932252 A CN 201910932252A CN 110619381 A CN110619381 A CN 110619381A
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- China
- Prior art keywords
- circuit
- label
- humidity
- insulating layer
- aluminum foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 239000004831 Hot glue Substances 0.000 claims abstract description 18
- 239000000047 product Substances 0.000 claims description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 32
- 229910052782 aluminium Inorganic materials 0.000 claims description 32
- 239000011888 foil Substances 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000013329 compounding Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000011086 glassine Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 239000000123 paper Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000003326 Quality management system Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 7
- 229920002799 BoPET Polymers 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- G06K19/0772—Physical layout of the record carrier
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
- G08B13/2417—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags having a radio frequency identification chip
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- Burglar Alarm Systems (AREA)
- Making Paper Articles (AREA)
Abstract
The invention relates to a label capable of changing frequency along with humidity and a manufacturing method thereof, relating to the technical field of labels, comprising a base layer and characterized in that: the base layer is provided with a bottom surface and a top surface which are oppositely arranged, the bottom surface is adhered to the release paper through hot melt adhesive, the top surface is adhered to the circuit substrate through the hot melt adhesive, the circuit substrate comprises an insulating layer, a first circuit and a second circuit which are respectively arranged on the two surfaces of the insulating layer, the second circuit is adhered to the top surface of the base layer, and a connecting point is arranged between the first circuit and the second circuit to enable the first circuit and the second circuit to form a loop.
Description
Technical Field
The invention relates to the technical field of labels, in particular to a label with frequency changing along with humidity and a manufacturing method thereof.
Background
The clothing products are greatly influenced by external humidity when being stored, if the humidity of a warehouse is too high, the clothing products can mildew, and various pests are easily bred, so that the clothing products are damaged, and the loss is brought to owners. At present, for the storage of the products, a custodian can only know the change rule of the temperature and humidity of the inside and the outside of a warehouse by knowing the temperature and humidity suitable for various clothing products and monitoring the temperature and humidity of the inside and the outside of the warehouse, so that the corresponding measures are taken for adjustment, but only certain prevention can be performed on the whole, the specific moisture condition of a single product cannot be mastered, the recorded data volume is large, the calculation amount is large, the calculated change rule is not accurate, and the influence of various emergency situations is large.
Disclosure of Invention
The invention provides a label with frequency changing along with humidity and a manufacturing method thereof, aiming at solving the problems in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a label along with humidity transform frequency, includes the basic unit, the basic unit has relative bottom surface and the top surface that sets up, and the underrun hot melt adhesive with leave type paper bonding, the top surface passes through the hot melt adhesive and bonds with circuit substrate, circuit substrate includes the insulating layer and sets up respectively in the first circuit and the second circuit on two surfaces of insulating layer, second circuit and basic unit top surface bonding, connect through the mode of dotting between first circuit and the second circuit, make both form the return circuit.
Preferably, the insulating layer is adhered to the first circuit and the second circuit by glue, the insulating layer is a CPP film or a PE film, and the first circuit and the second circuit are aluminum foils.
Preferably, the first circuit includes a first film capacitor at the center, a loop coil around the first film capacitor and having an inner end connected to the first film capacitor, and an induction portion connected to an outer end of the loop coil and located below the loop coil, the first circuit further includes a first connection portion, a first surrounding part is extended below the first connecting part, the second circuit is provided with a second central part, a second upper surrounding part and a second lower surrounding part which are mutually independent, the second central part comprises a second connecting part superposed with the first connecting part through an insulating layer, a second membrane capacitor superposed with the first membrane capacitor through an insulating layer, and a second connecting bridge connecting the second connecting part and the second membrane capacitor, the second connecting portion is connected with the first connecting portion in a dotting mode, the second upper surrounding portion and the annular coil are overlapped with each other at the top and two sides of the annular coil through insulating layers, and the second lower surrounding portion and the first surrounding portion are overlapped with each other through the insulating layers.
Preferably, the thickness of the first circuit is 50-70um, the thickness of the second circuit is 8-12um, and the thickness of the insulating layer is 8-20 um.
Preferably, the base layer is a CPP film, and the thickness of the base layer is 8-20 um.
Preferably, the release paper is 80G glassine paper.
The manufacturing method of the label based on frequency change along with humidity comprises the following steps:
(1) compounding: respectively compounding a first aluminum foil and a second aluminum foil on two surfaces of an insulating plate through glue to manufacture a required circuit substrate;
(2) printing: printing circuit patterns with resist ink to both surfaces of a circuit substrate by gravure, wherein a first circuit is printed on a first aluminum foil and a second circuit is printed on a second aluminum foil;
(3) etching: corroding the aluminum foil which is not covered by the corrosion-resistant ink by adopting hydrochloric acid, reserving the aluminum foil consistent with the printed pattern to form a first circuit and a second circuit, and removing the corrosion-resistant ink on the first circuit after the first circuit is completed;
(4) riveting: connecting points are arranged at the set positions of the first circuit and the second circuit in a stamping mode for riveting, so that the first circuit and the second circuit are conducted to form a loop;
(5) attaching: one surface of a second circuit of the circuit substrate is attached to the top surface of the base layer by hot melt adhesive, and the bottom surface of the base layer is attached to release paper by hot melt adhesive, so that a semi-finished product of the electronic tag is formed;
(6) die cutting: punching and forming the label according to the specified shape and size of the label through a die, and winding the label into a finished product of the electronic label in strips;
(7) and (3) detection: frequency detection is carried out on the finished product of the electronic tag, products with unqualified frequency values are removed, and the unqualified products enter the next process;
(8) packaging: and (5) boxing the qualified products, and classifying, grading and packaging according to the summarizing result of the quality management system.
Preferably, the concentration of hydrochloric acid in the step (3) is 10-17%.
Preferably, the concentration of hydrochloric acid in the step (3) is 15%.
The working principle of the invention is as follows: when the tag is dry, the RF signal gives out a relatively high RF frequency, and at the moment, the tag can automatically alarm through induction to realize the anti-theft function; when the label is affected with tide, the induction part receives the moisture and generates short circuit, and the RF signal is reduced to a relatively low frequency, so that the function of early warning of the moisture is achieved.
Compared with the prior art, the invention has the beneficial effects that: the invention is used for products with larger influence on the humid condition, for example, the invention is applied to a hang tag of clothes, is used for monitoring the humid condition of various clothes, can monitor a single product so as to take measures in time and reduce the loss, simultaneously has the function of automatic alarm of a common label when the clothes are not humid, has the anti-theft effect, and simultaneously has simple manufacturing method, does not need the traditional decoding point printing process and saves the time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a first circuit of the present invention;
FIG. 3 is a schematic diagram of a second circuit of the present invention;
FIG. 4 is a schematic view of a manufacturing process of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-4, a label for changing frequency with humidity includes a base layer 2, the base layer 2 has a bottom surface and a top surface which are oppositely arranged, the bottom surface 2 is adhered to a release paper 1 by a hot melt adhesive, the top surface is adhered to a circuit substrate by the hot melt adhesive, the circuit substrate includes an insulating layer 4 and a first circuit 5 and a second circuit 3 which are respectively arranged on two surfaces of the insulating layer, the second circuit 3 is adhered to the top surface of the base layer 2, the first circuit 5 and the second circuit 3 are connected by dotting to form a loop, the first circuit 5 includes a first film capacitor 501 at the center, a loop coil 502 which is around the first film capacitor 501 and has an inner end connected to the first film capacitor 501, and an induction portion 503 which is connected to an outer end of the loop coil 502 and is located below the loop coil 502, the first circuit 5 further includes a first connection portion 504, a first enclosure portion 505 extends below the first connection portion 504, the second circuit 3 includes a second central portion including a second connection portion 301 overlapping the first connection portion 501 with an insulating layer 4 interposed therebetween, a second film capacitor 303 overlapping the first film capacitor 501 with an insulating layer 4 interposed therebetween, and a second connection bridge 302 connecting the second connection portion 301 and the second film capacitor 303, the second connection portion 301 is connected to the first connection portion 501 by dotting, the second upper surrounding portion 305 overlaps the loop coil 502 with an insulating layer 4 interposed therebetween at the uppermost side and both sides thereof, and the second lower surrounding portion 304 overlaps the first surrounding portion 505 with an insulating layer 4 interposed therebetween.
The insulating layer 4, the first circuit 5 and the second circuit 3 are bonded by glue, the insulating layer 4 is a CPP film or a PE film, and the first circuit 5 and the second circuit 3 are aluminum foils.
Wherein, the thickness of first circuit 5 is 50-70um, and the thickness of second circuit 3 is 8-12um, and the thickness of insulating layer 4 is 8-20 um.
Wherein, basic unit 2 is the CPP film, and basic unit 2's thickness is 8-20 um.
Wherein, the release paper 1 adopts 80G glassine paper.
Example 1
(1) Compounding: adopting a CPP film of 8um as an insulating layer, adhering a first aluminum foil of 70um thickness and a second aluminum foil of 12um thickness on two surfaces of the CPP film respectively by glue, and compounding to manufacture the required circuit substrate;
(2) printing: printing resist ink for circuit patterns to both surfaces of a circuit substrate by gravure, wherein a first circuit as shown in fig. 2 is printed on a first aluminum foil, and a second circuit as shown in fig. 3 is printed on a second aluminum foil;
(3) etching: etching the aluminum foil not covered with the resist ink with 17% hydrochloric acid to form a first circuit as shown in FIG. 2 and a second circuit as shown in FIG. 3, and removing the resist ink from the first circuit;
(4) riveting: riveting the positions of the connection points set by the first circuit and the second circuit in a stamping mode to enable the first circuit and the second circuit to be conducted to form a loop;
(5) attaching: one surface of a second circuit of the circuit substrate is attached to the top surface of a PET film with the thickness of 30um by using a hot melt adhesive, and the bottom surface of the PET film is attached to 80G glassine paper by using the hot melt adhesive, so that a semi-finished product of the electronic tag is formed;
(6) die cutting: punching and forming the label according to the specified shape and size of the label through a die, and winding the label into a finished product of the electronic label in strips;
(7) and (3) detection: frequency detection is carried out on the finished product of the electronic tag, products with unqualified frequency values are removed, and the unqualified products enter the next process;
(8) packaging: and (5) boxing the qualified products, and classifying, grading and packaging according to the summarizing result of the quality management system.
Example 2
(1) Compounding: a PE film of 20um is used as an insulating layer, a first aluminum foil of 50um thickness and a second aluminum foil of 10um thickness are respectively bonded on the two surfaces of the PE film by glue, and the needed circuit substrate is manufactured by compounding;
(2) printing: printing resist ink for circuit patterns to both surfaces of a circuit substrate by gravure, wherein a first circuit as shown in fig. 2 is printed on a first aluminum foil, and a second circuit as shown in fig. 3 is printed on a second aluminum foil;
(3) etching: etching the aluminum foil not covered with the resist ink with hydrochloric acid having a concentration of 10% to leave the aluminum foil in conformity with the printed pattern, forming a first circuit as shown in FIG. 2 and a second circuit as shown in FIG. 3, and removing the resist ink from the first circuit after completion;
(4) riveting: riveting the positions of the connection points set by the first circuit and the second circuit in a stamping mode to enable the first circuit and the second circuit to be conducted to form a loop;
(5) attaching: one surface of a second circuit of the circuit substrate is attached to the top surface of a PET film with the thickness of 20um by using a hot melt adhesive, and the bottom surface of the PET film is attached to 80G glassine paper by using the hot melt adhesive, so that a semi-finished product of the electronic tag is formed;
(6) die cutting: punching and forming the label according to the specified shape and size of the label through a die, and winding the label into a finished product of the electronic label in strips;
(7) and (3) detection: frequency detection is carried out on the finished product of the electronic tag, products with unqualified frequency values are removed, and the unqualified products enter the next process;
(8) packaging: and (5) boxing the qualified products, and classifying, grading and packaging according to the summarizing result of the quality management system.
Example 3
(1) Compounding: adopting a 14-micrometer CPP film as an insulating layer, adhering a first aluminum foil with the thickness of 60 micrometers and a second aluminum foil with the thickness of 12 micrometers on two surfaces of the insulating layer respectively by adopting glue, and compounding to manufacture the required circuit substrate;
(2) printing: printing resist ink for circuit patterns to both surfaces of a circuit substrate by gravure, wherein a first circuit as shown in fig. 2 is printed on a first aluminum foil, and a second circuit as shown in fig. 3 is printed on a second aluminum foil;
(3) etching: etching the aluminum foil not covered with the resist ink with hydrochloric acid having a concentration of 15% to leave the aluminum foil in conformity with the printed pattern, forming a first circuit as shown in FIG. 2 and a second circuit as shown in FIG. 3, and removing the resist ink from the first circuit after completion;
(4) riveting: riveting the positions of the connection points set by the first circuit and the second circuit in a stamping mode to enable the first circuit and the second circuit to be conducted to form a loop;
(5) attaching: one surface of a second circuit of the circuit substrate is attached to the top surface of a PET film with the thickness of 25um by using a hot melt adhesive, and the bottom surface of the PET film is attached to 80G glassine paper by using the hot melt adhesive, so that a semi-finished product of the electronic tag is formed;
(6) die cutting: punching and forming the label according to the specified shape and size of the label through a die, and winding the label into a finished product of the electronic label in strips;
(7) and (3) detection: frequency detection is carried out on the finished product of the electronic tag, products with unqualified frequency values are removed, and the unqualified products enter the next process;
(8) packaging: and (5) boxing the qualified products, and classifying, grading and packaging according to the summarizing result of the quality management system.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A label for changing frequency with humidity, comprising a base layer, wherein: the basic unit has relative bottom surface and the top surface that sets up, and the underrun hot melt adhesive with leave type paper bonding, the top surface passes through the hot melt adhesive and bonds with circuit substrate, circuit substrate includes the insulating layer and sets up respectively in the first circuit and the second circuit on two surfaces of insulating layer, second circuit and basic unit top surface bonding are connected through the mode of dotting, make both form the return circuit between first circuit and the second circuit.
2. A humidity dependent frequency tag as claimed in claim 1, wherein: the insulating layer is adhered to the first circuit and the second circuit by glue, the insulating layer is a CPP film or a PE film, and the first circuit and the second circuit are aluminum foils.
3. A humidity dependent frequency tag as claimed in claim 2, wherein: the first circuit comprises a first film capacitor at the center, an annular coil around the first film capacitor and with the inner end connected with the first film capacitor, and an induction part connected with the outer end of the annular coil and positioned below the annular coil, the first circuit is also provided with a first connecting part, a first surrounding part is extended below the first connecting part, the second circuit is provided with a second central part, a second upper surrounding part and a second lower surrounding part which are mutually independent, the second central part comprises a second connecting part superposed with the first connecting part through an insulating layer, a second membrane capacitor superposed with the first membrane capacitor through an insulating layer, and a second connecting bridge connecting the second connecting part and the second membrane capacitor, the second connecting portion is connected with the first connecting portion in a dotting mode, the second upper surrounding portion and the annular coil are overlapped with each other at the top and two sides of the annular coil through insulating layers, and the second lower surrounding portion and the first surrounding portion are overlapped with each other through the insulating layers.
4. A humidity dependent frequency tag as claimed in claim 3, wherein: the thickness of first circuit is 50-70um, and the thickness of second circuit is 8-12um, and the thickness of insulating layer is 8-20 um.
5. A humidity dependent frequency tag as claimed in claim 1, wherein: the basic unit is the CPP film, and its thickness is 8-20 um.
6. A humidity dependent frequency tag as claimed in claim 1, wherein: the release paper adopts 80G glassine paper.
7. A method of making a humidity dependent frequency dependent label according to any one of claims 1 to 6, including the steps of:
(1) compounding: respectively compounding a first aluminum foil and a second aluminum foil on two surfaces of an insulating plate through glue to manufacture a required circuit substrate;
(2) printing: printing circuit patterns with resist ink to both surfaces of a circuit substrate by gravure, wherein a first circuit is printed on a first aluminum foil and a second circuit is printed on a second aluminum foil;
(3) etching: corroding the aluminum foil which is not covered by the corrosion-resistant ink by adopting hydrochloric acid, reserving the aluminum foil consistent with the printed pattern to form a first circuit and a second circuit, and removing the corrosion-resistant ink on the first circuit after the first circuit is completed;
(4) riveting: connecting points are arranged at the set positions of the first circuit and the second circuit in a stamping mode for riveting, so that the first circuit and the second circuit are conducted to form a loop;
(5) attaching: one surface of a second circuit of the circuit substrate is attached to the top surface of the base layer by hot melt adhesive, and the bottom surface of the base layer is attached to release paper by hot melt adhesive, so that a semi-finished product of the electronic tag is formed;
(6) die cutting: punching and forming the label according to the specified shape and size of the label through a die, and winding the label into a finished product of the electronic label in strips;
(7) and (3) detection: frequency detection is carried out on the finished product of the electronic tag, products with unqualified frequency values are removed, and the unqualified products enter the next process;
(8) packaging: and (5) boxing the qualified products, and classifying, grading and packaging according to the summarizing result of the quality management system.
8. The method of claim 7, wherein the frequency of the label varies with humidity by: the concentration of the hydrochloric acid in the step (3) is 10-17%.
9. The method of claim 7, wherein the frequency of the label varies with humidity by: the concentration of the hydrochloric acid in the step (3) is 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932252.0A CN110619381A (en) | 2019-09-29 | 2019-09-29 | Label with frequency changing along with humidity and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932252.0A CN110619381A (en) | 2019-09-29 | 2019-09-29 | Label with frequency changing along with humidity and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110619381A true CN110619381A (en) | 2019-12-27 |
Family
ID=68924985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910932252.0A Pending CN110619381A (en) | 2019-09-29 | 2019-09-29 | Label with frequency changing along with humidity and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110619381A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170919A (en) * | 1996-03-07 | 1998-01-21 | 检验点***公司 | Security tag and manufacturing method |
| CN1525421A (en) * | 2003-02-28 | 2004-09-01 | 上海埃塞电子有限公司 | Safety label not revivable after being decoded and making method thereof |
| CN101383020A (en) * | 2008-10-14 | 2009-03-11 | 厦门大学 | Environment sensitive type passive electronic label |
| CN101799883A (en) * | 2010-03-26 | 2010-08-11 | 黄佳佳 | Double-frequency tag with low frequency and high frequency |
| CN102750572A (en) * | 2012-06-01 | 2012-10-24 | 北京物资学院 | RFID (Radio Frequency Identification Devices) label with moisture sensor, RFID system and method for detecting moisture |
| CN210534830U (en) * | 2019-09-29 | 2020-05-15 | 诺瓦特伦（杭州）电子有限公司 | Label with frequency changed along with humidity |
-
2019
- 2019-09-29 CN CN201910932252.0A patent/CN110619381A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170919A (en) * | 1996-03-07 | 1998-01-21 | 检验点***公司 | Security tag and manufacturing method |
| CN1525421A (en) * | 2003-02-28 | 2004-09-01 | 上海埃塞电子有限公司 | Safety label not revivable after being decoded and making method thereof |
| CN101383020A (en) * | 2008-10-14 | 2009-03-11 | 厦门大学 | Environment sensitive type passive electronic label |
| CN101799883A (en) * | 2010-03-26 | 2010-08-11 | 黄佳佳 | Double-frequency tag with low frequency and high frequency |
| CN102750572A (en) * | 2012-06-01 | 2012-10-24 | 北京物资学院 | RFID (Radio Frequency Identification Devices) label with moisture sensor, RFID system and method for detecting moisture |
| CN210534830U (en) * | 2019-09-29 | 2020-05-15 | 诺瓦特伦（杭州）电子有限公司 | Label with frequency changed along with humidity |
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