CN106960239B - High-precision passive temperature detection tag suitable for human body - Google Patents
High-precision passive temperature detection tag suitable for human body Download PDFInfo
- Publication number
- CN106960239B CN106960239B CN201710159192.4A CN201710159192A CN106960239B CN 106960239 B CN106960239 B CN 106960239B CN 201710159192 A CN201710159192 A CN 201710159192A CN 106960239 B CN106960239 B CN 106960239B
- Authority
- CN
- China
- Prior art keywords
- impedance
- chip
- antenna
- human body
- groove
- 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.)
- Active
Links
Images
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
- G06K19/0716—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
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to a high-precision passive temperature detection label suitable for a human body, which comprises a skin-friendly bottom layer, a chip and an antenna adhered to a radio frequency end of the chip, wherein the skin-friendly bottom layer, the chip and the antenna are sequentially connected; the antenna adopts a half-wave dipole structure; the antenna includes a substrate and a feeder line portion; the feeder line part is etched to form a real part impedance part and an imaginary part impedance groove so as to realize conjugate matching with the chip impedance; the imaginary impedance slot is located inside the feeder section; the imaginary part impedance groove comprises a U-shaped groove arranged in the center of the substrate and two circular splicing grooves symmetrically distributed relative to the U-shaped groove; the real part impedance part is positioned at the edge of the feeder line part and comprises a trapezoid part and a plurality of ladder unit parts, wherein the trapezoid part is arranged at one side of the U-shaped groove. The antenna structure can realize conjugate matching with the impedance of the chip, has good reading performance and ensures the maximization of energy transmitted to the chip.
Description
Technical Field
The invention relates to the field of electronic tags, in particular to a high-precision passive temperature detection tag suitable for a human body.
Background
The combination of the wearable equipment and the sensing network becomes an important research branch in the development background of the Internet of things, and the temperature sensing network is integrated on the wearable equipment, so that the monitoring of the human body temperature can be realized, and convenience is brought to the human body health industries such as medical treatment, nursing and the like.
With the development of technology, passive temperature detection is also being adopted slowly. The Chinese application patent CN 104523245A passive RFID wireless body temperature detection patch and system comprises a flexible glue patch and a flexible temperature measurement patch based on a passive RFID technology, wherein the flexible temperature measurement patch consists of a temperature measurement component, a passive RFID chip with a temperature measurement function and a flexible antenna; the temperature measuring part is used for measuring temperature and sending a temperature data signal through an RFID wireless transmission protocol; the flexible antenna is used for collecting RFID radio frequency energy for the temperature measuring component to work and transmitting the temperature data signal under the control of the temperature measuring component; the flexible glue is a sheet with single-sided glue, and is used for packaging the flexible temperature measuring glue in a single flexible sheet structure and can be attached to human skin.
However, the passive temperature detection tag in the prior art only discloses a signal transmission mode and a control method between the chip and the antenna and an outer packaging material of the tag, but does not mention how the impedance matching between the chip and the antenna and the feeding mode of the antenna achieve the best matching effect when the tag is attached to a human body, and the efficiency of temperature sensing effect, energy maximum transmission and information transmission between the chip and the antenna is that whether the impedance matching can achieve conjugate matching maximally. Therefore, it is necessary to propose a passive temperature detection tag with high precision suitable for human body.
Disclosure of Invention
In view of the technical problems existing in the background art, the invention aims to overcome the defects of the prior art and provide the passive temperature detection tag which has high impedance matching degree, good reading effect, high information transmission efficiency and attractive appearance and is suitable for a human body.
In order to solve the technical problems, the invention adopts the following technical measures:
a high-precision passive temperature detection label suitable for a human body comprises a chip, an antenna adhered to a radio frequency end of the chip and an outer packaging sleeve for packaging the chip and the antenna; the antenna adopts a half-wave dipole structure; the antenna includes a substrate and a feeder line portion; the feeder line part is etched to form a real part impedance part and an imaginary part impedance groove so as to realize conjugate matching of the detection tag and the chip impedance when the detection tag is attached to a human body model; the imaginary impedance slot is located inside the feeder section; the imaginary part impedance groove comprises a U-shaped groove arranged in the center of the substrate and two circular splicing grooves symmetrically distributed relative to the U-shaped groove; the real part impedance part is positioned at the edge of the feeder line part and comprises a trapezoid part and a plurality of ladder unit parts, wherein the trapezoid part is arranged at one side of the U-shaped groove.
As a further improvement, the U-shaped groove realizes coarse adjustment of the impedance of an imaginary part; the U-shaped groove comprises a horizontal groove part and longitudinal groove parts arranged on two sides of the horizontal groove part, wherein the longitudinal groove parts and the horizontal groove parts are arranged at a certain angle, so that the opening of the U-shaped groove is larger to increase the transverse groove length, the angle is defined as beta, and the range of beta is 120-150 degrees.
As a further improvement, the circular splicing groove realizes fine adjustment of the imaginary impedance; the circular ring splicing groove comprises two semicircular units spliced with each other, and the two semicircular units are symmetrically distributed about the center of a splicing point; the semicircular unit comprises a semicircular ring part and a vertical part, and the radius value of the semicircular ring part is defined as r, wherein the range of r is 6.5 mm-8 mm.
As a further improvement, the trapezoid part realizes coarse adjustment of real impedance; the trapezoid part is isosceles trapezoid, and one side of the upper bottom is close to the U-shaped groove to prevent current from accumulating at the inner angle.
As a further improvement, the step unit portion realizes fine tuning of real part impedance; the number of the step unit parts is four, the step unit parts are uniformly distributed around the feeder line part, and the step unit parts are all arranged on the long edges on two sides of the feeder line part.
As a further improvement, the antenna is manufactured by metal etching on a rectangular flexible circuit board, and the length of the substrate is defined as d, wherein d ranges from 89mm to 95mm; defining the width of the substrate as h, wherein h ranges from 24mm to 25mm; the etching width of the imaginary impedance grooves is 1mm.
As a further improvement, the chip comprises a sensing module, a radio frequency module, a storage module and a digital module, wherein the chip is used as a core processing center of the detection tag, and the chip and the antenna are ensured not to be in cold joint during processing so as to ensure impedance matching and stability of tag performance.
As a further improvement, the outer packaging sleeve material is water-washing cloth; the dielectric constant of the substrate is 3.1, the loss tangent value is 0.02, and the thickness of the substrate is 0.1mm; the overall thickness of the detection tag was 0.25mm.
As a further improvement, the impedance matching process of the antenna and the chip is based on the detection tag being attached to a human body model; the detection label can be combined with clothes and sewn on the inner side of the clothes or directly attached to human skin.
The utility model provides a wearable article next to the skin with passive sensing temperature measurement, includes the article body next to the skin and a high accuracy passive temperature detection label suitable for the human body, the detection label is made in the article inboard next to the skin and human body direct contact.
Compared with the prior art, the invention has the following advantages:
1. the antenna in the high-precision passive temperature detection tag suitable for the human body adopts the structure of the imaginary part impedance groove to realize the matching with the imaginary part impedance value of the chip, coarse adjustment is firstly carried out through the structure of the U-shaped groove, and fine adjustment is carried out through the structure of the annular splicing groove, so that the matching between the imaginary part impedance of the antenna and the imaginary part impedance of the chip can be effectively ensured.
2. The antenna in the high-precision passive temperature detection tag suitable for the human body adopts the structure of the real part impedance part to realize the matching with the real part impedance value of the chip, coarse adjustment is firstly carried out through the structure of the trapezoid part, and fine adjustment is carried out through the structure of the step unit part, so that the real part impedance of the antenna can be effectively matched with the real part impedance of the chip.
3. The outer packaging sleeve in the high-precision passive temperature detection label suitable for the human body is made of the water-washing cloth, can effectively prevent water and extrusion, has good heat conduction performance and is high in human body comfort level.
4. The high-precision passive temperature detection label suitable for the human body can be sewn in various close-fitting articles to realize intelligent clothes, and is convenient, quick and easy to operate in function.
Drawings
FIG. 1 is a schematic diagram of the structure of an antenna in a high-precision passive temperature detection tag suitable for a human body;
FIG. 2 is a schematic diagram of the structure of a high-precision passive temperature detection tag suitable for a human body;
fig. 3 is an equivalent circuit diagram of an antenna and a chip in the high-precision passive temperature detection tag suitable for a human body.
Description of the main reference signs
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to the attached drawings and detailed description:
referring to fig. 1 to 2, in an embodiment, a high-precision passive temperature detection tag suitable for a human body includes a chip 10, an antenna 20 adhered to a radio frequency end of the chip, and an outer packaging sleeve 30 wrapping the chip 10 and the antenna 20; the antenna 20 adopts a half-wave dipole structure, the working frequency range of the antenna is 910 MHz-917 MHz, and the working frequency is 915MHz; the antenna includes a substrate 21 and a feeder line portion 23; the label body has the advantages of small and light overall structure and thin thickness, and is very suitable for being applied to human bodies for temperature sensing detection.
Referring to fig. 3, in the embodiment, an antenna andthe chip can be equivalent to a circuit diagram, wherein R Tag Representing the equivalent resistance value L of the tag antenna Tag Representing the equivalent inductance value of the tag antenna, C Tag Representing the equivalent capacitance value, R, of the tag antenna Chip Representing the equivalent resistance value of the chip, C Chip Representing the equivalent capacitance value of the chip; unlike the chip impedance, the impedance of the tag antenna is not constant. Depending on the application environment, the impedance of the tag antenna will also change due to the influence of the surrounding environment. When the chip 10 and the tag antenna impedance are conjugate matched (resonating with each other), energy can be maximally transmitted from the antenna to the chip 10, that is, the antenna design process is a conjugate matching design process of the antenna impedance and the chip impedance, wherein the chip impedance is a constant value provided by a chip manufacturer, and can be equivalent to a parallel connection form of a resistor and an inductor. If a+jb is expressed as its complex impedance. The process of realizing antenna matching is to adjust the structural parameters of the antenna to make the complex impedance of the antenna be a-jb, wherein the value of a is real impedance and the value of b is imaginary impedance; because the detection tag is applied to a human body, and various parts and organs of the human body have a lot of influence on signal transmission of the tag, in order to ensure that the tag has good reading performance when being applied to the human body, the human body is used as a part of the tag to carry out collaborative simulation during design, so that when the tag is attached to various parts of the human body, the antenna can be well matched with the chip, and energy is maximally transmitted to the chip.
Specifically, when the working frequency point of the tag is about 915MHz and the tag is attached to different parts of a human body, the detection tag corresponds to the following table of standing wave ratio:
| human body part | Standing wave ratio |
| Head part | 1.0202 |
| Chest part | 1.0292 |
| Arm | 1.0431 |
| Abdomen part | 1.0746 |
Table 1: standing wave ratio of labels corresponding to each part of human body simulation model
As can be seen from the table, the high-precision passive temperature detection tag suitable for the human body can achieve matching of impedance values at all parts of the human body.
Referring to fig. 1, in the embodiment, in order to achieve the conjugate matching effect and achieve the standing wave ratio achieved by the surface tag attached to each part of the human body, the feeding mode of the antenna needs to be designed to adjust the real part impedance value and the imaginary part impedance value of the antenna; the feeder line portion 23 is initially rectangular in shape, that is, the feeder line portion 23 is formed by metal etching on a rectangular flexible circuit board; the feeder line portion 23 is etched to form a real part impedance portion 232 and an imaginary part impedance groove 231 to achieve conjugate matching with the impedance of the chip 10 when the detection tag is attached to a human body model; the imaginary impedance slot 231 may equivalently form a parasitic inductance or capacitance to generate an imaginary impedance matching with the imaginary impedance of the chip 10; the imaginary impedance slot 231 is located inside the feeder section 23; the imaginary impedance slot 231 comprises a U-shaped slot 2311 arranged at the center of the substrate and two circular splicing slots 2312 symmetrically distributed about the U-shaped slot 2311; the real impedance part 232 is located at the edge of the feeder line part 23, and the real impedance part 232 includes a trapezoid part 2321 and a plurality of ladder unit parts 2322, which are opened at one side of the U-shaped slot 2311. By adopting the feeding mode, the impedance value of the chip 10 and the impedance value of the antenna can be effectively matched, and the overall attractive effect can be achieved.
Referring to fig. 1, in an embodiment, the U-shaped slot 2311 implements coarse tuning of the imaginary impedance; the U-shaped groove 2311 includes a horizontal groove 23111 and longitudinal groove 23112 disposed on two sides of the horizontal groove 23111, the opening of the U-shaped groove 2311 is downward, the longitudinal groove 23112 and the horizontal groove 23111 are disposed at a certain angle so that the opening of the U-shaped groove 2311 is larger, the transverse groove length is increased, the hollowed-out area is ensured to be smaller to achieve the best matching effect and signal transmission, the angle is defined as beta, wherein the range of beta is 120-150 degrees, preferably, the value of beta takes 135 degrees, the length of the horizontal groove 23111 is 12.5-13 mm, preferably, the length value of the horizontal groove 23111 is 12.78mm, and the vertical projection length of the longitudinal groove 23112 is 2-2.5 mm, preferably, the length of the longitudinal groove 23112 is 2.37mm. The circular splicing groove 2312 realizes fine adjustment of the impedance of an imaginary part; the circular splicing groove 2312 is formed by two semicircular units spliced together, and the two semicircular units are symmetrically distributed about the center of a splicing point; the semicircular unit comprises a semicircular ring part 23121 and a vertical part 23122, wherein the radius value of the semicircular ring part 23121 is defined as r, the range of r is 6.5 mm-8 mm, preferably, the value of r is 7.5mm, the length range of the vertical part 23122 is defined as 6 mm-7 mm, preferably, the length value is 6.48mm; the structure of the imaginary part impedance slot 231 is adopted to realize the matching with the imaginary part impedance value of the chip 10, coarse adjustment is firstly carried out through the structure of the U-shaped slot 2311, fine adjustment is carried out through the structure of the circular ring splicing slot 2312, the matching between the imaginary part impedance of an antenna and the imaginary part impedance of the chip 10 can be effectively ensured, meanwhile, the symmetrical structure of the circular ring splicing slot 2312 is adopted to fine-adjust the imaginary part impedance, the beauty can be ensured, the length of the vertical fine adjustment part 23122 is further adopted to adjust the imaginary part impedance value, and the effects of attractive appearance and fine adjustment matching are realized.
Referring to fig. 1, in an embodiment, the trapezoid 2321 implements coarse tuning of the real impedance; the trapezoid portion 2321 is an isosceles trapezoid, a base angle of the trapezoid portion 2321 is 45 degrees, and an upper base side is close to the U-shaped groove 2311, so that a structure of a corner can be guaranteed to be reduced slowly, and current is prevented from accumulating at an inner angle. The distance between the U-shaped groove 2311 and the trapezoid 2321 is 1mm, the distance is different, the coupling degree is different, the corresponding equivalent capacitance value is also different, so that the equivalent imaginary impedance is also different, and the proper distance can realize half-power cosmetology of the matching effect; the step unit 2322 achieves fine tuning of real part impedance; the number of the step unit portions 2322 is four, the step unit portions 2322 are uniformly distributed around the feeder line portion 23 and are respectively arranged on long edges on two sides of the feeder line portion 23, the step unit portions 2322 are three steps, the height range of each step of the step unit portions 2322 is 0.8 mm-1.2 mm, and the preferable height is 1mm; the length range of each stage is 7 mm-15 mm; the length and the height of each stage can be matched and finely adjusted according to the actual real part impedance value, meanwhile, the horizontal part and the vertical part of each stage are mutually perpendicular, any two of the four ladder unit parts 2322 are symmetrically distributed or centrally symmetrically distributed relative to the center of the substrate, the ladder unit parts 2322 are required to ensure the longitudinal length of the antenna in the vertical direction as much as possible, the higher the longitudinal length is, the larger the area of the antenna is, and the better the signal transmission and current transmission efficiency of the antenna are. The real part impedance part 232 is adopted to realize the matching with the real part impedance value of the chip 10, coarse adjustment is firstly carried out through the structure of the trapezoid part 2321, and fine adjustment is carried out through the structure of the ladder unit part 2322, so that the matching between the real part impedance of the antenna and the real part impedance of the chip 10 can be effectively ensured, meanwhile, the ladder unit part 2322 is symmetrically distributed, and stable transmission of current is realized while attractive appearance is ensured.
Referring to FIG. 1, the length of the substrate is defined as d, where d ranges from 89mm to 95mm, and preferably, d has a value of 90mm; defining the width of the substrate as h, wherein h ranges from 24mm to 25mm, and preferably, the value of h is 24.7mm; the dielectric constant of the substrate is 3.1, the loss tangent value is 0.02, and the thickness of the substrate is 0.1mm; the whole thickness range of the detection label is 0.2 mm-0.3 mm, and the thickness value is 0.25mm preferably; the etching width of the imaginary impedance slot 231 is 1mm, the difficulty of the processing technology is too small, the etching width is difficult to realize, the sensitivity is reduced, and the imaginary impedance slot 231 cannot be equivalently used as a parasitic capacitance. The substrate has the advantages that the flexibility characteristic of the substrate can be effectively guaranteed through the size parameters, and the substrate is matched with each part of a human body and is tightly attached to the human body.
The chip 10 comprises a sensing module, a radio frequency module, a storage module and a digital module, wherein the temperature measurement precision of the sensing module can reach 0.1 ℃, the chip 10 is used as a core processing center of the detection tag, the chip 10 is welded on the feeder line part 23, and the chip 10 and the antenna are ensured not to be in cold joint during processing so as to ensure the stability of impedance matching and tag performance. When the data such as temperature is read, the reader emits radio frequency signals, when the tag is in the electromagnetic field emitted by the reader antenna and the electromagnetic energy value reaches a certain degree, one part of energy is absorbed by the tag to supply power to the internal chip 10, and the other part is reflected back to the reader in an electromagnetic back scattering mode. The electric energy transmission sub-tag antenna is to be transmitted to the chip 10, and a processing circuit in the chip 10 can convert high-frequency electromagnetic energy received by the tag antenna into a direct current power supply required by other circuits to work and modulate temperature related data information stored in the electronic tag onto reflected electromagnetic waves, so that data transmission from the electronic tag to a reader-writer is realized.
Referring to fig. 2, in the embodiment, when the tag antenna is affected by the environment and the impedance changes to break the original matching condition, i.e. detune, the energy transmitted from the antenna to the chip 10 is greatly reduced or even not transmitted to the chip 10 completely, so that the chip 10 cannot be started to operate, the tag performance is reduced, and the reading rate is reduced. The detection label can be directly contacted with human skin; the outer packaging sleeve 30 is made of water washing cloth; the outer packaging sleeve 30 made of the material can effectively play roles in good heat conduction performance, extrusion resistance and water resistance, can meet the comfort of a human body, and has strong skin-friendly property; the adoption of the material can ensure that the tag antenna reduces the influence of the environment to the tag antenna to the greatest extent, and effectively ensures the overall stability of the tag.
In addition, change detection label and still can be applied to intelligent clothing field, specifically be a wearable article next to the skin with passive sensing temperature measurement, including article next to the skin body and a high accuracy passive temperature detection label that is applicable to the human body, detection label is made in the article next to the skin inboard and human body direct contact, article next to the skin can include scarf, cap, clothes, socks and trousers etc. and the suitability is strong, and the sensing is effectual, and the label body is flexible to be able to easily firmly make on the article next to the skin in order to realize the application of this detection label on intelligent clothing.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (6)
1. The utility model provides a high accuracy passive temperature detection label suitable for human, its characterized in that: the antenna comprises a chip, an antenna adhered to a radio frequency end of the chip and an outer packaging sleeve for packaging the chip and the antenna; the antenna adopts a half-wave dipole structure; the antenna includes a substrate and a feeder line portion; the feeder line part is etched to form a real part impedance part and an imaginary part impedance groove so as to realize conjugate matching of the detection tag and the chip impedance when the detection tag is attached to a human body model; the imaginary impedance slot is located inside the feeder section; the imaginary part impedance groove comprises a U-shaped groove arranged in the center of the substrate and two circular splicing grooves symmetrically distributed relative to the U-shaped groove; the real part impedance part is positioned at the edge of the feeder line part and comprises a trapezoid part and a plurality of ladder unit parts, wherein the trapezoid part is arranged at one side of the U-shaped groove;
coarse adjustment is firstly carried out through the structure of the U-shaped groove, and fine adjustment is then carried out through the structure of the circular ring splicing groove, so that the imaginary part impedance groove of the antenna is matched with the imaginary part impedance value of the chip;
coarse tuning is firstly carried out through the structure of the trapezoid part, and then fine tuning is carried out through the structure of the step unit part, so that the real part impedance part of the antenna is matched with the real part impedance value of the chip;
the U-shaped groove realizes coarse adjustment of the impedance of an imaginary part; the U-shaped groove comprises a horizontal groove part and longitudinal groove parts arranged on two sides of the horizontal groove part, wherein the longitudinal groove parts and the horizontal groove part are arranged at a certain angle, the angle is defined as beta, and the range of beta is 120-150 degrees;
the ring splice groove realizes fine adjustment of the imaginary impedance; the circular ring splicing groove comprises two semicircular units spliced with each other, and the two semicircular units are symmetrically distributed about the center of a splicing point; the semicircular unit comprises a semicircular ring part and a vertical part, and the radius value of the semicircular ring part is defined as r, wherein the range of r is 6.5 mm-8 mm;
the trapezoid part realizes coarse adjustment of real part impedance; the trapezoid part is isosceles trapezoid, and one side of the upper bottom is close to the U-shaped groove;
the step unit part realizes fine adjustment of real part impedance; the number of the step unit parts is four, the step unit parts are uniformly distributed around the feeder line part, and the step unit parts are all arranged on the long edges on two sides of the feeder line part.
2. The high-precision passive temperature detection tag for human body according to claim 1, characterized in that: the antenna is manufactured by metal etching on a rectangular flexible circuit board, and the length of the substrate is defined as d, wherein the range of d is 89-95 mm; defining the width of the substrate as h, wherein h ranges from 24mm to 25mm; the etching width of the imaginary impedance grooves is 1mm.
3. The high-precision passive temperature detection tag for human body according to claim 1, characterized in that: the chip comprises a sensing module, a radio frequency module, a storage module and a digital module.
4. The high-precision passive temperature detection tag for human body according to claim 1, characterized in that: the outer packaging sleeve material is water-washing cloth; the dielectric constant of the substrate is 3.1, the loss tangent value is 0.02, and the thickness of the substrate is 0.1mm; the overall thickness of the detection tag was 0.25mm.
5. The high-precision passive temperature detection tag for human body according to claim 1, characterized in that: the impedance matching process of the antenna and the chip is based on the detection label to be attached to a human body model; the detection label can be combined with the close-fitting object and sewn on the inner side of the close-fitting object or directly attached to the skin of a human body.
6. A wearable object next to skin article with passive sensing temperature measurement, includes object next to skin body, its characterized in that: further comprising the high-precision passive temperature detection tag for human body according to any one of claims 1 to 5, wherein the detection tag is sewn on the inner side of the close-fitting object to be in direct contact with human body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159192.4A CN106960239B (en) | 2017-03-17 | 2017-03-17 | High-precision passive temperature detection tag suitable for human body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710159192.4A CN106960239B (en) | 2017-03-17 | 2017-03-17 | High-precision passive temperature detection tag suitable for human body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106960239A CN106960239A (en) | 2017-07-18 |
| CN106960239B true CN106960239B (en) | 2023-07-04 |
Family
ID=59470269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710159192.4A Active CN106960239B (en) | 2017-03-17 | 2017-03-17 | High-precision passive temperature detection tag suitable for human body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106960239B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655585A (en) * | 2017-10-26 | 2018-02-02 | 中国农业大学 | A kind of passive implanted temperature-detecting device, system and method |
| CN108771300A (en) * | 2018-06-12 | 2018-11-09 | 广西科技师范学院 | Multifunctional safety helmet system based on Radio Frequency Identification Technology |
| CN110006532A (en) * | 2019-04-15 | 2019-07-12 | 高兴莲 | Long-range monitoring temperature patch control system and control method, temperature patch based on Internet of Things |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892966U (en) * | 2010-05-12 | 2011-07-06 | 上海华申泰格软件有限公司 | Intelligent temperature sensing tag |
| CN104523245A (en) * | 2015-01-07 | 2015-04-22 | 何筱峰 | Passive RFID wireless body temperature detection patch and system |
| CN105701533A (en) * | 2015-12-31 | 2016-06-22 | 上海仪电智能电子有限公司 | Passive electronic tag having temperature sensing function |
| JP2016114541A (en) * | 2014-12-17 | 2016-06-23 | 凸版印刷株式会社 | Composite of noncontact ic tag module and biocompatible adhesive label |
| CN206849068U (en) * | 2017-03-17 | 2018-01-05 | 厦门致联科技有限公司 | A kind of passive high-precision temperature detection label and wearable personal object |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7545328B2 (en) * | 2004-12-08 | 2009-06-09 | Electronics And Telecommunications Research Institute | Antenna using inductively coupled feeding method, RFID tag using the same and antenna impedance matching method thereof |
-
2017
- 2017-03-17 CN CN201710159192.4A patent/CN106960239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201892966U (en) * | 2010-05-12 | 2011-07-06 | 上海华申泰格软件有限公司 | Intelligent temperature sensing tag |
| JP2016114541A (en) * | 2014-12-17 | 2016-06-23 | 凸版印刷株式会社 | Composite of noncontact ic tag module and biocompatible adhesive label |
| CN104523245A (en) * | 2015-01-07 | 2015-04-22 | 何筱峰 | Passive RFID wireless body temperature detection patch and system |
| CN105701533A (en) * | 2015-12-31 | 2016-06-22 | 上海仪电智能电子有限公司 | Passive electronic tag having temperature sensing function |
| CN206849068U (en) * | 2017-03-17 | 2018-01-05 | 厦门致联科技有限公司 | A kind of passive high-precision temperature detection label and wearable personal object |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106960239A (en) | 2017-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100799140B1 (en) | Radio frequency identificationrfid tag and manufacturing method thereof | |
| TWI262447B (en) | Tag device, antenna, and portable-type card | |
| CN106960239B (en) | High-precision passive temperature detection tag suitable for human body | |
| US20180366810A1 (en) | Antenna Coupler Mechanism | |
| US9024725B2 (en) | Communication terminal and information processing system | |
| EP2283539B1 (en) | Rfid tag | |
| US9077067B2 (en) | Radio IC device | |
| TWI525899B (en) | Rfid tag antenna | |
| TW200928987A (en) | Anti-metal RF identification tag and the manufacturing method thereof | |
| JP5778155B2 (en) | Antenna for RFID transponder system | |
| JP2013504132A (en) | Wearable data transceiver using coupled antenna and method thereof | |
| CN206849068U (en) | A kind of passive high-precision temperature detection label and wearable personal object | |
| CN201489565U (en) | Flexible UHF frequency range RFID label | |
| US20170062903A1 (en) | Antenna Coupler Mechanism | |
| JP6465260B1 (en) | Metal ring with RFID tag and method of attaching RFID tag | |
| CN109244661A (en) | A kind of small circularly-polarizedanti-metal implanted RFID antenna | |
| CN209169382U (en) | A kind of small circularly-polarizedanti-metal implanted RFID antenna | |
| CN207201684U (en) | Long-distance wireless identification livestock ear tag female buckle structure | |
| JP6154581B2 (en) | Design method for medical RFID tag, medical RFID tag, and sanitary material with RFID tag | |
| CN206293606U (en) | A kind of PCB antenna and rfid interrogator | |
| US8042744B2 (en) | RFID tag | |
| CN219203495U (en) | Anti-liquid tag antenna | |
| CN109659668B (en) | RFID antenna and equipment terminal with same | |
| CN216979784U (en) | Electronic tag and electronic tag structure | |
| CN111697314B (en) | Three-dimensional tag antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |