CN106886735B - Electronic tag and system for collecting substance concentration - Google Patents
Electronic tag and system for collecting substance concentration Download PDFInfo
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- CN106886735B CN106886735B CN201710021899.9A CN201710021899A CN106886735B CN 106886735 B CN106886735 B CN 106886735B CN 201710021899 A CN201710021899 A CN 201710021899A CN 106886735 B CN106886735 B CN 106886735B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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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
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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
- G06K19/0723—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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
Abstract
The utility model discloses an electronic tag for collecting substance concentration, which comprises an RFID chip, an RFID antenna and a detector, wherein the detector comprises a semiconductor layer and a receiving layer, the receiving layer is arranged on the semiconductor layer, and the RFID antenna and the semiconductor layer are respectively and electrically connected with the RFID chip. The electronic tag for collecting the concentration of the substance, provided by the utility model, has the advantages that the concentration of the target substance is obtained by measuring the change of the electrical property of the semiconductor layer, the structure is simple, the receiving layer is arranged on the semiconductor layer through the thin film technology, the manufacturing process is simple, and the cost is low.
Description
Technical Field
The utility model relates to the technical field of electronic tags, in particular to an electronic tag and a system for collecting substance concentration.
Background
Currently, devices for collecting the concentration of a substance generally comprise a sensor, a data transceiver and a data processor, wherein the data transceiver is generally arranged separately based on a wireless data transmission technology into a data transmitter at the sensor end and a data receiving layer at the data processor end, the data transmitter is generally fixed at a position where the concentration of the substance needs to be collected, and the data receiving layer is generally arranged in a movable manner so that data can be collected at different positions. In actual operation, the data transmitter acquires the collected substance concentration data from the sensor, wirelessly transmits the data to the data receiving layer, and transmits the data to the data processor for processing after the data receiving layer receives the data.
The utility model patent with application number 200720139520.6 discloses an in-vivo implanted biochemical parameter automatic detection system device, wherein a sensor of the device is provided with an RFID module, the concentration of substances such as blood sugar and the like can be detected after the sensor is implanted into a human body, and concentration data is read by an electronic tag reader-writer in vitro through an RFID wireless radio frequency technology. The solution disclosed in this patent shows that the internal circuit of the sensor is complex and the cost is high. The same problems also exist in schemes such as an agricultural product quality risk early warning system based on the RFID technology with application number 201310523567.2, a heavy metal detector in edible oil with application number 201420058121.7, a gas sensing detection RFID intelligent sensing terminal with application number 201420530263.9 and the like.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the electronic tag for collecting the concentration of the substances is simple in structure, small in size and low in cost, and can be widely applied to various systems needing concentration monitoring of liquid substances and gaseous substances.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides an electronic tags for gathering material concentration, includes RFID chip, RFID antenna and detector, the detector includes semiconductor layer and receiving layer, the receiving layer sets up on the semiconductor layer, RFID antenna and semiconductor layer respectively with RFID chip electricity is connected.
The utility model adopts another technical scheme that:
the system for collecting the concentration of the substance comprises an electronic tag and a reading terminal, wherein the electronic tag is the electronic tag for collecting the concentration of the substance, and the reading terminal is in communication connection with the electronic tag.
The utility model has the beneficial effects that:
(1) The detector changes the electrical property of the semiconductor layer through the interaction of the receiving layer and the target substance, the change of the electrical property of the semiconductor layer can be identified by the RFID chip, the RFID chip can obtain and store the concentration data of the target substance according to the corresponding relation between the preset electrical property parameter and the concentration, so that the concentration of the target substance is detected.
(2) The reading terminal is in communication connection with the electronic tag, and the reading terminal can read the concentration data of the target substance and display or perform other subsequent processing.
Drawings
FIG. 1 is a schematic diagram of an electronic tag for collecting a substance concentration according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of an electronic tag for collecting a concentration of a substance according to an embodiment of the present utility model;
FIG. 3 is a side view of a detector of an electronic tag for collecting substance concentration according to an embodiment of the present utility model;
fig. 4 is a block diagram of an RFID chip for an electronic tag for collecting a substance concentration according to an embodiment of the present utility model.
Description of the reference numerals:
1. an RFID chip; 11. a radio frequency module; 111. an RF/DC conversion unit; 112. a radio frequency modulation demodulation circuit; 12. a storage unit; 13. a processor; 14. a data acquisition module; 141. the R/C front end analog acquisition unit; 142. a linear amplifier unit; 143. an A/D encoding unit; 15. an output unit; 2. an RFID antenna; 21. a first antenna layer; 22. an insulating layer; 23. a second antenna layer; 3. a detector; 31. a semiconductor layer; 32. a receiving layer; 33. an electrode; 34. a substrate.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present utility model in detail, the following description is made in connection with the embodiments and the accompanying drawings.
The most critical concept of the utility model is as follows: the semiconductor layer is provided with the receiving layer which can interact with the target substance to change the electrical property of the semiconductor layer, and the concentration of the target substance is obtained by measuring the change of the electrical property of the semiconductor layer, so that the semiconductor device has the advantages of simple structure, simple manufacturing process and low cost.
Referring to fig. 1 to 3, an electronic tag for collecting a substance concentration includes an RFID chip 1, an RFID antenna 2, and a detector 3, wherein the detector 3 includes a semiconductor layer 31 and a receiving layer 32, the receiving layer 32 is disposed on the semiconductor layer 31, and the RFID antenna 2 and the semiconductor layer 31 are electrically connected to the RFID chip 1, respectively.
From the above description, the beneficial effects of the utility model are as follows: the detector changes the electrical property of the semiconductor layer through the interaction of the receiving layer and the target substance, the change of the electrical property of the semiconductor layer can be identified by the RFID chip, the RFID chip can obtain and store the concentration data of the target substance according to the corresponding relation between the preset electrical property parameter and the concentration, so that the concentration of the target substance is detected.
Further, the RFID antenna 2 is a high-frequency antenna, the RFID antenna 2 includes a first antenna layer 21, an insulating layer 22, and a second antenna layer 23, and the first antenna layer 21 and the second antenna layer 23 are respectively disposed on two sides of the insulating layer 22 and electrically connected.
Further, two electrodes 33 are provided on the semiconductor layer 31, and the two electrodes 33 are electrically connected to the RFID antenna 2, respectively.
Further, the RFID chip 1 includes a data acquisition module 14, and the data acquisition module 14 is configured to detect an electrical parameter of the semiconductor layer 31.
As can be seen from the above description, during the debugging process, the data acquisition module detects the corresponding resistances and capacitances generated by the semiconductor layer under different environments, and when in use, the concentration of the target substance is reversely deduced according to the different resistances and capacitances of the semiconductor layer.
Further, the RFID chip 1 further comprises a storage unit 12, and the storage unit 12 is used for storing information.
As can be seen from the above description, the storage unit is configured to store the corresponding resistances and capacitances of the semiconductor layers detected by the data acquisition module in different environments during the debugging process, and form a correspondence between the semiconductor electrical performance parameters and the concentrations.
The system for collecting the concentration of the substance comprises a reading terminal and the electronic tag for collecting the concentration of the substance, wherein the reading terminal is in communication connection with the electronic tag.
As can be seen from the above description, the reading terminal is in communication connection with the electronic tag, and the reading terminal can read the concentration data of the target substance and display or perform other subsequent processing.
Further, the reading terminal is a mobile phone, an IPAD or a signal receiver.
Referring to the drawings, a first embodiment of the utility model is:
a system for collecting the concentration of a substance comprises an electronic tag for collecting the concentration of the substance and a reading terminal, wherein the reading terminal is in communication connection with the electronic tag for collecting the concentration of the substance. The reading terminal is a mobile phone, an IPAD or a signal receiver.
The electronic tag for collecting the substance concentration comprises an RFID chip 1, an RFID antenna 2 and a detector 3, wherein the RFID antenna 2 is a high-frequency antenna, the RFID antenna 2 comprises a first antenna layer 21, an insulating layer 22 and a second antenna layer 23, the first antenna layer 21 and the second antenna layer 23 are respectively arranged on two side surfaces of the insulating layer 22, the first antenna layer 21 and the second antenna layer 23 respectively comprise a head end and a tail end, the tail end of the first antenna layer 21 is electrically connected with the head end of the second antenna layer 23, and the head end of the first antenna layer 21 and the tail end of the second antenna layer 23 are respectively electrically connected with the RFID chip 1.
The RFID chip 1 comprises a radio frequency module 11, a storage unit 12, a processor 13, a data acquisition module 14 and an output unit 15, wherein the radio frequency module 11 comprises an RF/DC conversion unit 111 and a radio frequency modulation and demodulation circuit 112, the RF/DC conversion unit 111 is electrically connected with the processor 13 through the radio frequency modulation and demodulation circuit 112, the data acquisition module 14 comprises an R/C front end analog acquisition unit 141, a linear amplifier unit 142 and an A/D coding unit 143 which are electrically connected in sequence, and the A/D coding unit 143, the storage unit 12 and the output unit 15 are respectively electrically connected with the processor 13. R in the R/C front-end analog quantity acquisition unit 141 represents a resistance value, C represents a capacitance value, and the environment acquisition method is realized by adopting a resistance, capacitance or combined resistance and capacitance mode, thereby being beneficial to the control of acquisition precision.
The RF module 11 is configured to receive a signal transmitted by the reading terminal, on the one hand, the RF/DC conversion unit 111 converts RF energy into electrical energy and supplies power to the processor 13 and the data acquisition module 14, and on the other hand, the RF modem circuit 112 completes the response between the electronic tag and the reading terminal under the instruction of the processor 13.
In the debugging process, the R/C front-end analog acquisition unit 141 is configured to acquire corresponding resistances and capacitances generated by the detector 3 in different environments, perform linear amplification through the linear amplifier unit 142, perform a/D conversion through the a/D encoding unit 143, compare the obtained result with the reference parameters stored in the storage unit 12, and output the result to the processor 13 and store the result in the storage unit 12; in use, the concentration of the target substance is deduced according to the detected resistance and/or capacitance values of the detector 3, and the data are stored in the storage unit 12 for standby or transmitted back to the reading terminal for uploading to the server according to the request sent by the reading terminal.
Under normal conditions, the RFID chip 1 is in a sleep standby mode, and after receiving a radio signal sent by the reading terminal, obtains necessary energy and supplies power to other components. The RFID chip 1 activates the processor after receiving the instruction of the reading terminal, updates or writes the data of the storage unit 12 through the data acquisition module 14, and simultaneously executes the output unit 15 according to the received instruction of the reading terminal, or feeds back the real-time data of the storage unit 12 to the reading terminal, so as to complete the processes of environmental parameter acquisition, storage, data transmission and the like. The output unit 15 is a GPO output unit, and can send out an external control signal through the processor 13, so as to display real-time related information collected by the detector 3, such as an LED display, an acousto-optic alarm lamp, and can be used for driving other external circuit modules to achieve similar functions.
The detector 3 includes a semiconductor layer 31 and a receiving layer 32, the receiving layer 32 being provided on the semiconductor layer 31, the receiving layer 32 having a property of interacting with a target substance to change an electrical property of the semiconductor layer 31, the RFID chip 1 and the semiconductor layer 31 being electrically connected to the RFID antenna 2, respectively.
The target substance is a gaseous target substance or a liquid target substance. The gaseous target substance may be present in the air, and the receiving layer 32 may interact with the gaseous target substance in the air when the detector 3 is placed in the air. A liquid target substance may be applied to the detector 3 and the receiving layer 32 may be in contact with the liquid target substance and subsequently interact with the liquid target substance.
The receiving layer 32 may include at least one functionalized receiving layer 32 or functional group, and the receiving layer 32 may interact with the target substance, such as forming a chemical bond with the target substance, by chemically reacting with the target substance. Such interactions may also include the formation of hydrogen bonding interactions of the receiving layer 32 with the target substance. In addition, the receiving layer 32 may also interact with the target substance in other reactive and/or interactive forms.
The semiconductor layer 31 has unique electrical characteristics that allow or prevent the passage of current or electrons under different conditions. For example, the semiconductor layer 31 may be configured to allow current to pass when a target substance is detected and/or to prevent current from passing when the concentration of the target substance is below a predetermined value.
The semiconductor layer 31 comprises different semiconductor materials, such as organic semiconductors, polymeric semiconductors, small molecule semiconductors, oxide-based semiconductors, and/or silicon-based semiconductors. Different fabrication processes may select different semiconductor materials that match the substrate 34 and/or receiving layer 32 or other factors such as sensitivity, response time, detection range, etc. for the desired performance.
To measure the current through the semiconductor layer 31, two electrodes 33 are provided on or over the semiconductor layer 31, the electrodes 33 may be deposited directly on the semiconductor layer 31, and the conductivity at the electrode 33-semiconductor interface contact may be enhanced. In addition, the electrode 33 may be deposited on the material comprising the receiving layer 32. These different structures may result in different contact resistances of the electrode 33 and the semiconductor layer 31, because the layer of the receiving layer 32 between the electrode 33-semiconductor may effectively enhance or reduce the conductivity at the interface between the different layers. The two electrodes 33 are electrically connected to the RFID antenna 2, respectively.
The electrode 33 may include one or more metal contacts on or over the semiconductor layer 31. In addition, the electrode 33 may include, but is not limited to, any conductive material, such as a metal, doped semiconductor, or conductive oxide.
The detector 3 may be fabricated on a substrate 34, with the receiving layer 32, the semiconductor layer 31, and the substrate 34 being stacked in this order. The substrate 34 may be of a material composition that provides additional mechanical strength to the overall structure of the detector 3. Such materials may include, for example, materials such as polymers, glass, or ceramics. The substrate 34 may be a polyethylene terephthalate (PET) flexible substrate or an inflexible substrate in some other configuration. In addition, the substrate 34 may also be the semiconductor layer 31 described above, for example a silicon-based substrate, comprising a semiconductor material having the necessary rigidity to support the overall structure of the detector 3, as well as having the required electrical properties.
The material deposition layers of the detector 3, such as the receiving layer 32, the semiconductor layer 31 and the electrode 33 are all based on organic materials, which is advantageous for some preferred manufacturing processes which can only be performed at low temperatures and/or in solution processes, which keeps the process low in complexity and costs.
The manufacture of the detector 3 may comprise four main steps or procedures. First, the substrate 34 of flexible PET material is cleaned according to standard cleaning procedures; in a second step, the semiconductor layer 31 is deposited on the substrate 34. For example, the organic semiconductor material may be spin-coated or printed on a PET substrate and then the deposited solution is dried to form a thin film of semiconductor. In a third step, the functionalized receiving layer 32 is dissolved in a solvent such as, but not limited to, water, acetone, acetonitrile, methanol, ethanol, propanol, butanol, ethyl acetate, ethylene glycol, benzene, chloroform, tetrahydrofuran, t-butyl alcohol, cyclohexane, ethyl chloride, diethyl ether, ethylene glycol diethyl ether, dimethyl sulfoxide, or any other solvent suitable for dissolving the functionalized receiving layer 32, and the solvent in which the receiving layer 32 is dissolved is spin-coated or printed on the surface of the deposited semiconductor layer 31. The solvent may be removed in a subsequent drying step, thus forming a material layer comprising the receiving layer 32. In addition, the receiving layer 32 may be deposited on the semiconductor layer 31 using physical vapor deposition or chemical vapor deposition.
The thickness of the semiconductor layer 31 is approximately 50nm and the layer of the receiving layer 32 is approximately 30nm. These thickness values may be varied in different designs to optimize a number of parameters such as any process offset, the resistance of the semiconductor layer 31 and/or the receiving layer 32, the contact resistance between the electrode 33 and the semiconductor, and the field effect generated by the semiconductor layer 31 when the receiving layer 32 and the target substance interact, etc.
Finally, in a fourth step, two electrodes 33, for example of a metal film or other conductive material, are deposited on the surface of the receiving layer 32. The receiving layer 32 may be patterned so that the electrode 33 may be in direct contact with the semiconductor layer 31. The electrode 33 may be formed as a patterned conductive material layer by depositing it on the semiconductor layer 31 using spin coating and/or printing. The electrode 33 may be patterned by printing when it is deposited on or over the semiconductor layer 31.
The two electrodes 33 are spaced apart by a distance of about 50um to 100 um. This effectively adjusts the resistance of the regions of the receiving layer 32 exposed to and interacting with the target substance and the semiconductor and/or receiving layer 32 material between the two electrodes 33. These parameters in turn affect the sensitivity and performance of the detector 3.
The entire manufacturing process is based on a solution process and each deposited layer is based on an organic material. This allows the manufacturing scale of the detector 3 to be easily enlarged, for example using roll-to-roll manufacturing procedures in different printing techniques. These solution processes may require only low temperature equipment and do not involve any vacuum processes, thus further reducing the manufacturing cost of the detector 3.
As shown in fig. 4, the detector 3 is exposed to the target substance, and by applying a voltage or current bias between the two electrodes 33, the current-voltage characteristic of the detector 3 under the influence of the target substance can be obtained. Different amounts or concentrations of the target substance may be determined based on obtaining different current-voltage characteristics. In some examples, the current-voltage characteristic may be detected by the resistance value between the two electrodes 33, which means that the amount of the target substance obtained by the detection is changed by the change in the resistance of the detector 3.
The target substance may be a fluid target, such as a gaseous target or a liquid target. The target substance may be applied on the area with the receiving layer 32 exposed, for example, a target substance containing a gas may be brought to the receiving layer 32, a target substance containing a solution may be applied in direct contact with the receiving layer 32, or the detector 3 may be placed in a gas or liquid or the like, an environment containing a target substance.
The receiving layer 32 only selectively interacts with the target substance, e.g., does not form chemical bonds with any other substance when interacting with the target substance. Thus, when the receptive layer 32 interacts with the target substance, the receptive layer 32 will temporarily or permanently form a chemical bond with the target substance. While the target species will change the charge state of the receiving layer 32. As a result, the current-voltage characteristics of the underlying semiconductor layer 31 are changed, which may include a change in the conductivity of the semiconductor layer 31. This change is due to a change in the electric field of adjacent layers of the receiving layer 32 and/or the conductivity of the receiving layer 32, and thus the resistance of the semiconductor layer 31 and/or the receiving layer 32 between the two electrodes 33 is changed. By using a suitable measuring instrument, such as a multimeter or a semiconductor parameter analyzer, the electrical properties of the detector 3 should be detectable and determinable.
The active layer of the detector 3 comprises only two layers of material, which may make the manufacture of the detector 3 simpler, which improves the yield and performance stability of the detector 3. The thin film structure also reduces the amount of material required to fabricate the detector 3.
The person skilled in the art can select the corresponding receiving layer 32 to detect the concentration of the target chemical according to the substance to be detected.
For example, 2-AMINOPYRIDINE N-OXIDE (2-AMINOPYRIDINE N-OXIDE) may be selected as the material for the receiving layer 32, so that the detector 3 may be used as a drug detector for detecting ketamine (2- (2-CHLOROPHENYL) -2- (METHYLAMINO) cycloethanol-1-ONE (2- (2-CHLOROPHENYL) -2- (methyl-amino) cyclohen-1-ONE), because ketamine may be adsorbed to 2-AMINOPYRIDINE N-OXIDE by hydrogen bonding.
Another example is: the detector 3 can also be used to detect the concentration of biogenic amine so that the freshness of the fish can be easily known to the public. The detector 3 for detecting the concentration of biogenic amine uses an electrochemical film as a base layer, and a molecularly imprinted polymer as a receiving layer 32, and has the following characteristics: (1) The molecularly imprinted polymer prepared by two different functional monomers is used for detecting biogenic amine; (2) The sensitivity of the molecularly imprinted polymer is greatly improved through a thin film technology and an electrical technology; (3) can be mass-produced at low cost; (4) Being able to detect biogenic amine concentrations as low as parts per billion in the gas phase; (5) has high repeatability and selectivity.
The recognition site in the molecularly imprinted polymer is composed of two different functional monomers, wherein the two functional monomers take dioxaborane 18-crown-6 as a core, and the two functional monomers can be connected to different backbones, so that the produced polymer has the conductive or nonconductive capability.
In preparing the molecularly imprinted polymer with conductivity, 1mmol of the functional monomer 2- (4- (di ([ 2,2'-bithiophen ] -5-yl) methyl) phenyl) -5,5-dimethyl-1,3, 2-dioxaberine, 3 and 18- (di (2, 2' -bithiophen ] -5-yl) methyl) -2,3,5,6,8,9,11,12,14,15-decahydrozo [ b ] [1,4,7,10,13,16] hexaoxaacyclooctadecine, 4,0.5mmol of template (putrescine), 1mmol of tetra-n-butyl perchlorate and 1mmol of trifluoroacetic acid were added to 10ml of acetonitrile, and placed in a shaker to oscillate for half an hour, allowing the monomers and the template to function sufficiently. When the shaking is completed, the solution is deoxygenated by nitrogen. The molecularly imprinted polymer was prepared on an electromembrane glass substrate by means of electropolymerization (cyclic voltammetry ). This process is repeated three hundred times at a scan rate of 50mV/s at 0.5-1.5V. The polymer film in the above process is rinsed with acetonitrile to remove unreacted mixture on the surface, and template molecules are extracted from the polymer with 0.01M sodium hydroxide solution until no template is detected in the sodium hydroxide solution on a visible ultraviolet spectroscope, and then dried in a nitrogen atmosphere. Then, the polymer film was sonicated in 500ml of acetonitrile for two hours, and suspended matters in acetonitrile were filtered off; acetonitrile is removed in a reduced pressure rotary concentrator, and the clear solids are dried under nitrogen and weighed for later use. During the preparation, the appropriate amount of acetonitrile was added to the clear solid (1 mg MIP/1mL CAN).
In preparing the non-conductive molecularly imprinted polymer, 1mmol of the functional monomer 5,5-dimethyl-2- (4-vinylphenyl) -1,3, 2-dioxaborine, 3 'and N- (2,3,5,6,8,9,11,12,14,15-decahydrobike [ b ] [1,4,7,10,13,16] oxacyclomycin-18-yl) metacrylamide, 4',5mmol of a crosslinking agent (trimethylolpropane trimethacrylate, TRIM), 0.1mmol of a photoinitiator (2-hydroxy-4- (2-hydroxyethoxy) -2-methylpropenone) and 0.1mmol of a template (putrescine) were added to 5ml of acetonitrile, and placed in an oscillator to oscillate for half an hour, allowing the monomer and the template to function sufficiently. When the shaking is completed, the solution is deoxygenated by nitrogen. The molecularly imprinted polymer was polymerized by ultraviolet light (365 nm). The deoxygenated mixture was left to stand under 365nm ultraviolet light for one hour to induce polymerization, and then left to stand for 24 hours to allow polymerization to complete. The white polymer obtained in the process is washed by acetonitrile to remove the unreacted mixture on the surface, and is ground to pass through a 300-mesh sieve, template molecules are extracted from the polymer by 10% ammonium hydroxide methanol solution for 24 hours, and then the polymer is washed by methanol until the template contained in the methanol can not be detected on a visible ultraviolet spectroscope, and the polymer is dried in a nitrogen environment for standby. During the preparation, the appropriate amount of acetonitrile was added to the clear solid (1 mg MIP/1mL CAN).
The preparation process of the detector 3 for detecting biogenic amine is as follows: 1. cleaning the surface of a glass substrate (glass sheet) according to standard procedures; 2. the semiconductor thin film forms a semiconductor layer 31 on the surface of the glass substrate by spin coating; 3. the molecularly imprinted polymer thin film layer forms a receiving layer 32 on the surface of the semiconductor layer 31 in a spin coating manner as well; 4. the metal electrode 33 is formed on the molecularly imprinted polymer thin film layer by vapor deposition. Because the molecularly imprinted polymer has a unique recognition site, putrescine can be immobilized. When the recognition sites of the molecularly imprinted polymer are filled, the resistance value thereof changes (increases or decreases). The detector 3 is connected to a specified voltage or current, the transition of its characteristics can be measured in detail.
In summary, the electronic tag for collecting the concentration of the substance provided by the utility model obtains the concentration of the target substance by measuring the change of the electrical property of the semiconductor layer, has a simple structure, and has simple manufacturing process and lower cost by arranging the receiving layer on the semiconductor layer through a thin film technology.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (4)
1. The system for collecting the concentration of the substance is characterized by comprising an electronic tag and a reading terminal, wherein the reading terminal is in communication connection with the electronic tag; the electronic tag comprises an RFID chip, an RFID antenna and a detector, wherein the detector comprises a semiconductor layer, a receiving layer and a substrate, the semiconductor layer is arranged on the substrate, the receiving layer is arranged on the semiconductor layer, and the RFID antenna and the semiconductor layer are respectively and electrically connected with the RFID chip;
the detector is prepared by the steps of:
s1, cleaning the substrate;
s2, depositing the semiconductor layer on the substrate;
s3, dissolving the receiving layer in a solvent, and spin-coating or printing the solvent with the receiving layer dissolved on the surface of the deposited semiconductor layer;
the receiving layer comprises a film with a conductive molecularly imprinted polymer and a non-conductive molecularly imprinted polymer;
the functional monomers in the conductive molecularly imprinted polymer and the non-conductive molecularly imprinted polymer take dioxaborane 18-crown-6 as a core;
in the preparation of the conductive molecularly imprinted polymer, 1mmol of the functional monomer 2- (4- (di ([ 2,2'-bithiophen ] -5-yl) methyl) phenyl) -5,5-dimethyl-1,3, 2-dioxabinane, 3 and 18- (di (2, 2' -bithiophen ] -5-yl) methyl) -2,3,5,6,8,9,11,12,14,15-decahydroazob ] [1,4,7,10,13,16] hexaoxaepoxyoctadecine, 4;
in preparing the non-conductive molecularly imprinted polymer, 1mmol of the functional monomer 5,5-dimethyl-2- (4-vinylphenyl) -1,3, 2-dioxaberinane, 3 'and N- (2,3,5,6,8,9,11,12,14,15-decahydrobenzo [ b ] [1,4,7,10,13,16] hexaoxaacyclooctadecin-18-yl) metacrylamide, 4' are added to 5ml of acetonitrile;
the RFID chip comprises a radio frequency module, a storage unit, a processor, a data acquisition module and an output unit, wherein the radio frequency module comprises an RF/DC conversion unit and a radio frequency modulation and demodulation circuit, the RF/DC conversion unit is electrically connected with the processor through the radio frequency modulation and demodulation circuit, the data acquisition module comprises an R/C front end analog acquisition unit, a linear amplifier unit and an A/D coding unit which are electrically connected in sequence, and the A/D coding unit, the storage unit and the output unit are respectively electrically connected with the processor;
the data acquisition module is used for detecting the electrical parameters of the semiconductor layer;
the storage unit is used for storing information.
2. The system for collecting a substance concentration according to claim 1, wherein the RFID antenna is a high-frequency antenna, and the RFID antenna includes a first antenna layer, an insulating layer, and a second antenna layer, and the first antenna layer and the second antenna layer are respectively disposed on both sides of the insulating layer and electrically connected.
3. The system for collecting a substance concentration according to claim 1, wherein two electrodes are provided on the semiconductor layer, and the two electrodes are electrically connected to the RFID antenna, respectively.
4. The system for collecting a substance concentration according to claim 1, wherein the reading terminal is a cell phone, IPAD or signal receiver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/107525 WO2018094745A1 (en) | 2016-11-28 | 2016-11-28 | Electronic tag for collecting substance concentration, and system for collecting substance concentration |
| CNPCT/CN2016/107525 | 2016-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106886735A CN106886735A (en) | 2017-06-23 |
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| WO2018094745A1 (en) * | 2016-11-28 | 2018-05-31 | 厦门英诺尔电子科技股份有限公司 | Electronic tag for collecting substance concentration, and system for collecting substance concentration |
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| CN1797806A (en) * | 2004-12-28 | 2006-07-05 | 北京有色金属研究总院 | Gas sensor of hydrogen semiconductor transducer, and preparation method |
| WO2011031095A2 (en) * | 2009-09-10 | 2011-03-17 | Lg Innotek Co., Ltd. | Apparatus and method for reader-based energy pumping and thin film battery integral type semi-passive tag |
| CN102222261A (en) * | 2011-07-01 | 2011-10-19 | 广州市华标科技发展有限公司 | Paper electronic tag with thin RFID (Radio Frequency Identification Device) chip and making method thereof |
| CN102693448A (en) * | 2012-06-01 | 2012-09-26 | 北京物资学院 | RFID (Radio Frequency Identification) label with air-sensitive device, RFID system and air concentration detection method |
| CN206594682U (en) * | 2016-11-28 | 2017-10-27 | 厦门英诺尔电子科技股份有限公司 | A kind of electronic tag and system for being used to gather material concentration |
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| US9494541B2 (en) * | 2012-07-05 | 2016-11-15 | General Electricity Company | Sensors for gas dosimetry |
| CN103399072B (en) * | 2013-08-02 | 2015-04-29 | 中国科学院化学研究所 | Gas-assisted organic field-effect transistor sensor, and preparation method and applications thereof |
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| CN1797806A (en) * | 2004-12-28 | 2006-07-05 | 北京有色金属研究总院 | Gas sensor of hydrogen semiconductor transducer, and preparation method |
| WO2011031095A2 (en) * | 2009-09-10 | 2011-03-17 | Lg Innotek Co., Ltd. | Apparatus and method for reader-based energy pumping and thin film battery integral type semi-passive tag |
| CN102222261A (en) * | 2011-07-01 | 2011-10-19 | 广州市华标科技发展有限公司 | Paper electronic tag with thin RFID (Radio Frequency Identification Device) chip and making method thereof |
| CN102693448A (en) * | 2012-06-01 | 2012-09-26 | 北京物资学院 | RFID (Radio Frequency Identification) label with air-sensitive device, RFID system and air concentration detection method |
| CN206594682U (en) * | 2016-11-28 | 2017-10-27 | 厦门英诺尔电子科技股份有限公司 | A kind of electronic tag and system for being used to gather material concentration |
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| WO2018094745A1 (en) | 2018-05-31 |
| CN206594682U (en) | 2017-10-27 |
| CN106886735A (en) | 2017-06-23 |
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