CN114444624A - Transmission line, antenna, radio frequency identification device and identification apparatus - Google Patents
Transmission line, antenna, radio frequency identification device and identification apparatus Download PDFInfo
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- CN114444624A CN114444624A CN202011198010.2A CN202011198010A CN114444624A CN 114444624 A CN114444624 A CN 114444624A CN 202011198010 A CN202011198010 A CN 202011198010A CN 114444624 A CN114444624 A CN 114444624A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1091—Screens specially adapted for reducing interference from external sources with screen grounding means, e.g. drain wires
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Abstract
The embodiment of the application provides a transmission line, an antenna, a radio frequency identification device and identification equipment, wherein the antenna comprises: a conductive layer and a ground layer; wherein the grounding layer at least partially surrounds the conductor layer; at least one opening structure is arranged on the grounding layer so as to realize the communication between the lead layer and the outside through the opening structure. The embodiment of the application can increase the radiation energy of the transmission line and improve the flexibility of the control of the radio frequency identification.
Description
Technical Field
The present application relates to the field of transmission technologies, and in particular, to a transmission line, an antenna, a radio frequency identification device, and an identification apparatus.
Background
The RFID (Radio Frequency Identification) technology is a non-contact and non-line-of-sight automatic Identification technology realized by utilizing wireless Radio Frequency communication. In recent years, RFID has been widely used in the fields of warehousing, logistics, anti-counterfeiting, traffic informatization, industrial automation, and the like.
For example, in the logistics sorting process in the logistics field, RFID technology is usually used to read information of goods and locate the goods to the acquired position.
The inventor finds that the existing RFID technology generally adopts a far-field antenna in the process of implementing the embodiment of the application, so that the precise control of the radio frequency identification range is difficult to achieve, and the identification accuracy is low.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present application is to provide a transmission line, which can increase the radiation energy of the transmission line and improve the flexibility of the control of the radio frequency identification.
Correspondingly, the embodiment of the application also provides an antenna, a radio frequency identification device, a sorting device, a tunnel device and an identification device, which are used for ensuring the realization and application of the transmission line.
In order to solve the above problem, an embodiment of the present application discloses a transmission line, including: a conductive layer and a ground layer;
wherein the ground layer at least partially surrounds the conductive line layer;
at least one opening structure is arranged on the grounding layer so as to realize the communication between the lead layer and the outside through the opening structure.
On the other hand, the embodiment of the present application further discloses an antenna, including: the transmission line.
In another aspect, an embodiment of the present application further discloses a radio frequency identification device, including: the antenna described above.
In another aspect, an embodiment of the present application further discloses a sorting apparatus, including: a conveying device and a sorting device; wherein the transfer device comprises: the radio frequency identification device is provided.
The embodiment of the present application further discloses a tunnel device, including: the radio frequency identification device is provided.
The embodiment of the application also discloses an identification device, which comprises: the radio frequency identification device and the optical identification device are provided.
The embodiment of the application has the following advantages:
the embodiment of the application can radiate the electric field of the wire layer out through the opening structure so as to increase the radiation energy of the transmission line. By applying the embodiment of the application, the radiation range of the transmission line can be controlled according to the opening structure, and then the control of the radio frequency identification range is realized, so that the flexibility of the control of the radio frequency identification can be improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a transmission line according to an embodiment of the present application;
fig. 2 is a schematic top view of an antenna according to an embodiment of the present application;
fig. 3 is a block diagram of a sorting device according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a sorting system according to an embodiment of the present application
Fig. 5 is a schematic structural diagram of a tunnel device according to an embodiment of the present application;
in the figure, 1 is a conducting wire layer, 2 is an opening structure, 3,5 is a grounding layer, and 4 is an insulating medium.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.
While the concepts of the present application are susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the description above is not intended to limit the application to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.
Reference in the specification to "one embodiment," "an embodiment," "a particular embodiment," or the like, means that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may or may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, where a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. In addition, it should be understood that items in the list included in the form "at least one of a, B, and C" may include the following possible items: (A) (ii) a (B) (ii) a (C) (ii) a (A and B); (A and C); (B and C); or (A, B and C). Likewise, a listing of items in the form of "at least one of a, B, or C" may mean (a); (B) (ii) a (C) (ii) a (A and B); (A and C); (B and C); or (A, B and C).
In some cases, the disclosed embodiments may be implemented as hardware, firmware, software, or any combination thereof. The disclosed embodiments may also be implemented as instructions carried or stored on one or more transitory or non-transitory machine-readable (e.g., computer-readable) storage media, which may be executed by one or more processors. A machine-readable storage medium may be implemented as a storage device, mechanism, or other physical structure (e.g., a volatile or non-volatile memory, a media disk, or other media other physical structure device) for storing or transmitting information in a form readable by a machine.
In the drawings, some structural or methodical features may be shown in a particular arrangement and/or ordering. Preferably, however, such specific arrangement and/or ordering is not necessary. Rather, in some embodiments, such features may be arranged in different ways and/or orders than as shown in the figures. Moreover, the inclusion of structural or methodical features in particular figures is not meant to imply that such features are required in all embodiments and that, in some embodiments, such features may not be included or may be combined with other features.
The embodiment of the application provides a transmission line, and the transmission line specifically includes: a conductive layer and a ground layer.
Wherein, the grounding layer at least partially surrounds the conducting wire layer to realize the potential relative to the zero point and reduce the resonance of the transmission line.
The grounding layer is provided with at least one opening structure so as to realize the communication between the conducting wire layer and the outside through the opening structure.
The embodiment of the application can radiate the electric field of the wire layer out through the opening structure so as to increase the radiation energy of the transmission line. By applying the embodiment of the application, the radiation range of the transmission line can be controlled according to the opening structure, and then the control of the radio frequency identification range is realized, so that the flexibility of the control of the radio frequency identification can be improved.
The transmission line of the embodiment of the application can be applied to the technical fields of warehousing, logistics, anti-counterfeiting, traffic informatization, industrial automation and the like, so that the transmission of signals is carried out in the technical fields, and further the control of the radiation range of the transmission line can be realized.
In the embodiment of the application, the opening structure is used for realizing the communication between the conductor layer and the outside, and further can transmit the radiation energy of the conductor layer to the outside. The environment may characterize the space outside the transmission line, and the environment may include: air, etc.
In practical applications, the ground layer may be a metal ground layer. The opening structure can be processed on the metal grounding layer by adopting a processing technology. For example, a through hole may be drilled or punched in the metal ground layer to form an opening structure.
The embodiment of the present application does not limit the specific structure of the opening structure. For example, the opening structure may be a circular hole, a conical hole, a rectangular hole, a trapezoidal hole, an even irregular hole, and the like. Accordingly, the cross-sectional shape of the opening structure specifically includes: circular, or rectangular, or triangular, or trapezoidal, or irregular, etc. It is an object of the embodiments of the present application to realize communication between the wire layer and the outside through the opening structure, and the specific structure of the opening structure is not limited.
The embodiment of the application can determine the parameters of the opening structure according to the range parameters so as to realize the control of the radiation range of the transmission line. The range parameter may characterize the radiation range. The above range parameter may include at least one of the following parameters: an identification area parameter, and an identification distance parameter. The identification distance corresponding to the identification distance parameter can represent the distance from the transmission line to an identification object (such as goods). The identification area parameter may characterize the identification plane area.
In an application example of the present application, assuming that the transmission line is applied to a logistics sorting scenario, the transmission line is disposed above a conveyor (such as a conveyor belt), the identification area parameter may correspond to a plane of the conveyor belt, and the identification distance parameter may correspond to a distance in a vertical direction of the conveyor belt, so as to represent a height range of identifiable goods.
The parameters of the opening structure may include: a size parameter and/or a number parameter. The dimensional parameters and/or number parameters of the above-mentioned opening structures may be matched to the range parameters. The range parameter may correspond to a range requirement in an application scenario, and thus a matching radiation range may be implemented in the corresponding application scenario.
According to one embodiment, the size parameter of the opening structure is matched to the identification distance parameter. The dimensional parameters may include: the dimension parameter of the cross-sectional pattern, such as the dimension parameter of a rectangle.
In an optional embodiment of the present application, the identification distance parameter is related to a dimension parameter in a preset direction, so that the control of the identification distance parameter can be realized by controlling the dimension parameter in the preset direction. For example, the preset direction parameter may be a width dimension parameter of a rectangle, or the like. It can be understood that, a person skilled in the art may determine the preset direction according to the actual application requirement, and the embodiment of the present application is not limited to the specific preset direction.
In another alternative embodiment of the present application, the identification distance parameter is related to the dimension parameters in a plurality of directions, so that the control of the identification distance parameter can be realized by controlling the dimension parameters in the plurality of directions. For example, the ratio of the dimension parameter in the first direction to the dimension parameter in the second direction may be controlled to achieve control of the identification distance parameter.
According to another embodiment, the number parameter of the opening structures is matched to the identification area parameter. For example, an increase in the extent of the identification area can be achieved by increasing the number of opening structures. As another example, a reduction in the extent of the identification area may be achieved by reducing the number of opening structures.
In the embodiment of the present application, the types of the transmission line may include: striplines, microstrip lines, suspended microstrip lines, or the like.
For the strip line, in the conventional case, the ground layer completely surrounds the conductor layer, and the electric field distribution of the conductor layer is between the ground layers, so that energy is not radiated. In the embodiment of the present invention, at least one opening structure is formed on the ground layer, so that the connection between the conductive layer and the outside is realized through the opening structure. Therefore, the electric field of the conductor layer can be radiated out through the opening structure to increase the radiation energy of the transmission line.
As for the microstrip line, conventionally, the ground layer partially surrounds the wire layer, and for example, a ground layer is provided on one side of the wire layer. The embodiment of the application has at least one opening structure on the ground layer on the side, so that the communication between the wire layer and the outside is realized through the opening structure. Therefore, the electric field of the conductor layer can be radiated out through the opening structure to increase the radiation energy of the transmission line. The reference to the opening structure of the microstrip line is not repeated herein.
In the embodiment of the present application, the wire layer may include a wire, and the material of the wire may include: copper, aluminum, and other conductive materials, it is understood that the specific material of the conductive wire is not limited in the embodiments of the present application.
In summary, the transmission line of the embodiment of the present application can radiate the electric field of the wire layer through the opening structure to increase the radiation energy of the transmission line. By applying the embodiment of the application, the radiation range of the transmission line can be controlled according to the opening structure, and then the control of the radio frequency identification range is realized, so that the flexibility of the control of the radio frequency identification can be improved.
The transmission line provided by the embodiments of the present application will be described in detail below by way of specific embodiments.
Referring to fig. 1, a schematic cross-sectional structure diagram of a transmission line according to an embodiment of the present application is shown, where the transmission line specifically includes: the lead layer 1, the grounding layer 3 and the grounding layer 5 are respectively positioned at two sides of the lead layer 1.
A plurality of opening structures 2 are arranged on the ground layer 3 on one side, and the corresponding cross-sectional shapes of the opening structures can be rectangular.
An insulating medium 4 is also provided between the ground planes on both sides. The insulating medium 4 serves for insulating and mechanically fixing the conductors having different potentials.
The insulating medium, also referred to as a dielectric, is an insulating material used to separate the plates. The insulating medium plays the role of insulation and mechanical fixation for conductors with different electric potentials in the insulating structure of the transmission line.
The insulating medium is various, such as plastic, rubber, glass, ceramic and the like; liquid such as various natural mineral oils, silicone oils, trichlorobiphenyl, etc.; such as air, carbon dioxide, sulfur hexafluoride, etc.
In an alternative embodiment of the present application, the insulating medium may comprise: PCB (Printed Circuit Board) corresponding insulating dielectric. The PCB may be a multilayer board and the intermediate layer of the PCB may be provided with an insulating medium such as silicon dioxide.
The embodiment of the application also provides an antenna which can comprise the transmission line.
An antenna (antenna) is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, usually free space, or vice versa. In radio equipment are components used to transmit or receive electromagnetic waves into the air. The fields of radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like all can work by depending on an antenna in the field of transmitting information by utilizing electromagnetic waves.
The transmission line is used to connect the antenna to the output of the transmitter or to connect the antenna to the input of the receiver. Transmission lines can be used to efficiently transmit signal energy. Requirements for the transmission line include: transmitting a signal received by an antenna to an input terminal of a receiver with a small loss; or to transmit the signal from the transmitter to the input of the receiver with little loss.
According to the embodiment of the application, the transmission lines can be arranged according to a wiring method, so that the antenna can be obtained. The manufacturing method of the antenna comprises an etching method, a hot stamping method and a conductive ink printing method. It can be understood that the specific arrangement of the transmission line and the specific manufacturing method of the antenna are not limited in the embodiments of the present application.
Referring to fig. 2, a schematic diagram of a top view structure of an antenna according to an embodiment of the present application is shown, where the antenna may include: the transmission line arranged according to the routing method specifically comprises: the opening structure 2 is arranged on the conducting wire layer 1, the grounding layer 3 and the grounding layer.
The embodiment of the application can control the identification area parameter and the identification distance parameter of the antenna by controlling the number and the size of the opening structures 2.
For example, the number of opening structures 2 may be increased to increase the identification area. As another example, the number of opening structures 2 may be reduced to reduce the identification area. As another example, the width dimension parameter of the opening structure 2 may be increased, or the aspect ratio of the opening structure 2 may be decreased, to increase the recognition distance.
To sum up, including the transmission line in the antenna of this application embodiment, because the transmission line can radiate out the electric field of wire layer via open structure to increase the radiant energy of transmission line, consequently can improve the radiation range of antenna.
The embodiment of the application also provides a radio frequency identification device which can comprise the antenna. In addition to the antenna, the apparatus may further include: a reader/writer and a processor. After the electronic tag corresponding to the identification object enters the magnetic field of the antenna, if a radio frequency signal sent by the reader-writer is received, product information stored in the chip is sent, or a signal with a certain frequency is actively sent; the reader reads and decodes the information, and then sends the information to the processor for relevant data processing.
In summary, the rfid device of the embodiment of the present application includes the transmission line, and the transmission line can radiate the electric field of the wire layer through the opening structure to increase the radiation energy of the transmission line. By applying the embodiment of the application, the radiation range of the transmission line can be controlled according to the opening structure, and then the control of the radio frequency identification range is realized, so that the flexibility of the control of the radio frequency identification can be improved.
The embodiment of the present application further provides a sorting device, and the sorting device specifically includes: a conveying device and a sorting device; wherein the transfer device comprises: the radio frequency identification device is provided. Because the radio frequency identification device of the embodiment of the application can improve the flexibility of the control of the radio frequency identification, the embodiment of the application can improve the accuracy of the identification of the sorted objects, and further can improve the accuracy of the sorting.
The sorting object may include: such as a logistics object of a parcel, it is to be understood that the embodiments of the present application are not limited to a particular sorting object.
In the embodiment of the present application, the rfid device may be optionally disposed at the front of the sorting device. The radio frequency identification device completes the identification of the logistics objects before the logistics objects reach the sorting device, so that the sorting device can sort the logistics objects according to the identification results of the logistics objects.
Referring to fig. 3, a block diagram of a sorting device according to an embodiment of the present application is shown, and referring to fig. 4, a schematic diagram of a sorting system according to an embodiment of the present application is shown. The sorting apparatus comprises in particular a conveying device 301 and a sorting device 302. The conveying device 301 includes an rfid device for identifying the logistics objects, and the sorting device 302 sorts the logistics objects according to the identification result of the logistics objects.
In fig. 3, the sorting device 302 is connected to a sorting table B via a chute a for sliding the logistic objects into the sorting table B through the chute a. It is understood that the embodiment of the present application is not limited to the specific connection manner between the sorting device 302 and the sorting table B.
In this embodiment of the application, optionally, the logistics objects may be sorted according to information such as article categories and/or destination addresses corresponding to the logistics objects. For example, in a logistics scenario, a destination address may represent a destination of logistics, and in the embodiment of the present application, the logistics objects may be sorted according to the destination address corresponding to the logistics object, so that the same destination address corresponds to the same sorting table. It is understood that the embodiment of the present application does not limit the specific sorting manner.
In this embodiment of the application, optionally, the parameter of the antenna may be obtained according to the parameter of the insulating medium. According to the embodiment of the application, the transmitted wavelength can be determined according to the material corresponding to the insulating medium, and then the parameters of the antenna can be determined according to the wavelength.
Wavelength (wavelength) refers to the distance a wave travels within one period of vibration. Waves of the same frequency propagate at different speeds in different insulating media and so are of different wavelengths. Wavelength refers to the displacement between two opposite equilibrium positions in the pattern of a wave along the direction of propagation of the wave. According to the antenna, the transmission wavelength is determined according to the material corresponding to the insulating medium, so that the parameters of the antenna are obtained according to the wavelength, the accuracy of the parameters of the antenna can be improved, and the performance of the antenna can be improved.
Optionally, the parameters of the antenna may include: and (4) caliber parameters. The aperture (or effective area) is a parameter representing the efficiency with which the antenna receives radio wave power. The aperture is defined as the area perpendicular to the direction of the incident radio wave and effectively intercepting the energy of the incident radio wave. Optionally, the aperture parameter may be a product of a transmitted wavelength and a preset value, and it can be understood that the specific process of obtaining the aperture parameter according to the transmitted wavelength is not limited in the embodiment of the present application.
It is understood that the aperture parameters are only illustrated as parameters of the antenna, and actually, the parameters of the antenna may further include: gain parameters, beam width parameters, and the like, which can also be obtained according to the transmitted wavelength, so as to improve the accuracy of the gain parameters or the beam width parameters, and further improve the performance of the antenna.
The embodiment of the present application further provides a tunnel device, which specifically includes: the radio frequency identification device is provided.
The tunnel equipment passes through the identification object through tunnel type transmission to realize identification. The radio frequency identification device can improve the flexibility of control of radio frequency identification, so that the identification accuracy of an identification object can be improved.
Referring to fig. 5, a schematic structural diagram of a tunnel device in an embodiment of the present application is shown, which specifically includes: the tunnel device 501 is provided with a radio frequency identification device, and the identification object transmitted by the transmission device 502 can be subjected to radio frequency identification.
An embodiment of the present application further provides an identification device, where the identification device may include: radio frequency identification devices, and optical identification devices.
The radio frequency identification device can identify an identification object by using a radio frequency identification principle. The optical recognition device can recognize a recognition object by using the optical recognition principle. The embodiment of the application can fuse the first recognition result of the radio frequency recognition device and the second recognition result of the optical recognition device, and recognize according to the obtained fusion recognition result, so as to improve the recognition accuracy.
The optical recognition apparatus may include: a laser recognition device, an infrared recognition device, etc., it is understood that the embodiments of the present application do not limit the specific optical recognition device.
The identification device of the embodiment of the application can be applied to the sorting scenario shown in fig. 3 or the tunnel scenario shown in fig. 5.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The transmission line, the antenna and the rfid device provided in the present application are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (12)
1. A transmission line, comprising: a conductive layer and a ground layer;
wherein the ground layer at least partially surrounds the conductive line layer;
at least one opening structure is arranged on the grounding layer so as to realize the communication between the lead layer and the outside through the opening structure.
2. The transmission line according to claim 1, characterized in that the cross-sectional shape of the open structure comprises: circular, or rectangular, or triangular, or trapezoidal.
3. The transmission line according to claim 2, characterized in that the dimensional parameters and/or number parameters of the open structures are matched to the range parameters.
4. The transmission line according to claim 3, characterized in that said range parameters comprise at least one of the following parameters: an identification area parameter, and an identification distance parameter.
5. The transmission line according to claim 3, characterized in that the dimensional parameter of the open structure is matched to an identification distance parameter; and/or the number parameter of the opening structures is matched with the identification area parameter.
6. An antenna, comprising: the transmission line of any one of claims 1 to 5.
7. A radio frequency identification device, comprising: the antenna of claim 6.
8. A sorting device, comprising: a conveying device and a sorting device; wherein the transfer device comprises: the radio frequency identification device of claim 7.
9. A sorting device according to claim 8, characterised in that the RFID means are arranged in front of the sorting means.
10. Sorting equipment according to claim 8, characterised in that the parameters of the antennas are derived from the parameters of the insulating medium.
11. A tunneling apparatus, comprising: the radio frequency identification device of claim 7.
12. An identification device, comprising: the radio frequency identification device of claim 7, and an optical identification device.
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| CN202011198010.2A CN114444624A (en) | 2020-10-30 | 2020-10-30 | Transmission line, antenna, radio frequency identification device and identification apparatus |
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