CN212724059U - Passive anti-metal electronic tag and identification system - Google Patents
Passive anti-metal electronic tag and identification system Download PDFInfo
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- CN212724059U CN212724059U CN202021707591.3U CN202021707591U CN212724059U CN 212724059 U CN212724059 U CN 212724059U CN 202021707591 U CN202021707591 U CN 202021707591U CN 212724059 U CN212724059 U CN 212724059U
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Abstract
The utility model discloses a passive anti metal electronic tags and identification system, electronic tags sets up in metal product surface when using to when electronic tags readwrite device sends radiofrequency signal to it, to the product information of the metal product of electronic tags readwrite device feedback self storage, electronic tags, include: the antenna unit comprises a first antenna, wherein the first antenna is electrically connected with the electronic tag chip and is used for receiving radio frequency signals and converting the radio frequency signals into induced current to be provided for the electronic tag chip; the electronic tag chip is used for storing product information and returning the product information to the electronic tag reading-writing device through the antenna unit under the energy of the induced current; but the plane perpendicular to radio frequency signal's at first antenna place beam center and metal product surface, the utility model provides an attached metal product surface of RFID electronic tags among the prior art, there is the RFID electronic tags energy by the absorptive problem of metal product.
Description
Technical Field
The utility model relates to a field that metallurgical product information was tracked especially relates to a passive anti-metal electronic tags and identification system.
Background
The RFID electronic tag is used as a simple and efficient information carrier, is gradually applied to industries such as industrial production, logistics transportation and the like, and greatly improves the object information identification speed and the information transfer efficiency. The rapid development of the RFID technology puts higher demands on a high-performance electronic tag identification system.
Although the application range of the RFID technology and related products is wider and wider, in metal environments such as the metallurgical industry and the like, the RFID electronic tag is attached to the surface of a metal product, and the energy of the RFID electronic tag is absorbed by the metal product, so that the information of the metal product carried by the RFID electronic tag cannot be normally identified.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a passive anti-metal electronic tag and an identification system, and solves the problem that in the prior art, the energy of the RFID electronic tag is absorbed by a metal product because the RFID electronic tag is attached to the surface of the metal product.
On one hand, the present application provides the following technical solutions through an embodiment of the present application:
a passive anti-metal electronic tag is arranged on the surface of a metal product when in use, so that when an electronic tag reading and writing device sends a radio frequency signal to the passive anti-metal electronic tag, the passive anti-metal electronic tag feeds back product information of the metal product stored by the passive anti-metal electronic tag to the electronic tag reading and writing device, and the electronic tag comprises: the antenna unit comprises a first antenna, wherein the first antenna is electrically connected with the electronic tag chip and is used for receiving the radio-frequency signal, converting the radio-frequency signal into induction current and supplying the induction current to the electronic tag chip; the electronic tag chip is used for storing the product information and returning the product information to the electronic tag reading-writing device through the antenna unit under the energy of the induced current; the plane where the first antenna is located can be perpendicular to the beam center of the radio frequency signal and the surface of the metal product.
In one embodiment, the antenna unit further comprises a second antenna; the first antenna is electrically connected with the second antenna and used for providing the induced current for the second antenna; the second antenna is directly or indirectly connected with the electronic tag chip and is used for returning the product information stored in the electronic tag chip to the electronic tag reading and writing device under the energy of the induced current; the second antenna can be attached to the surface of the metal product, and the plane where the first antenna is located can be perpendicular to the plane where the second antenna is located.
In one embodiment, the electronic tag further comprises a substrate layer, and the first antenna, the electronic tag chip and the second antenna are arranged on the substrate layer; the substrate layer comprises the structure that can buckle, the structure that can buckle is used for when using during the electronic tags the substrate layer is buckled, so that after buckling the substrate layer sets up when the metal product surface, the plane perpendicular to at first antenna place radio frequency signal's beam center, the second antenna with the laminating of metal product surface, the plane at first antenna place with the plane perpendicular at second antenna place.
In one embodiment, the bendable structure comprises a first bending line, a second bending line and a third bending line, and the first bending line, the second bending line and the third bending line are sequentially arranged on the substrate layer at intervals; the first bending line and the first side edge of the substrate layer form a first bending area, the first bending line and the second bending line form a second bending area, the second bending line and the third bending line form a third bending area, and the third bending line and the second side edge of the substrate layer form a fourth bending area; the first antenna is arranged on the back of the third bending area, and the second antenna is arranged on the back of the fourth bending area; when the electronic tag is used, the substrate layer is bent, so that the bent substrate layer is arranged on the surface of a metal product, the back of the first bending area and the back of the fourth bending area are respectively attached to the surface of the metal product, the back of the second bending area and the back of the third bending area are attached to each other, the third bending area is perpendicular to the fourth bending area, and the third bending area is perpendicular to the beam center of the radio-frequency signal.
In one embodiment, the substrate layer is also provided with a non-setting adhesive; the electronic tag further comprises: the substrate layer is bonded on the substrate layer through the adhesive sticker, and the first antenna, the second antenna and the electronic tag chip are embedded between the substrate layer and the substrate layer; the substrate layer is used for tearing off the substrate layer when the electronic tag is used, so that the back face of the fourth bending area is attached to the surface of the metal product, and the second antenna is in direct contact with the metal product.
On the other hand, the present application provides the following technical solutions through an embodiment of the present application:
a passive metal-resistant electronic tag identification system, comprising: the electronic tag reading and writing device is arranged outside the metal product, and the passive anti-metal electronic tag is arranged on the surface of the metal product; the electronic tag reading-writing device is used for sending a radio frequency signal to the passive anti-metal electronic tag so that the passive anti-metal electronic tag returns self-stored product information, wherein the product information is information of the metal product where the passive anti-metal electronic tag is located; the passive anti-metal electronic tag comprises: the antenna unit comprises a first antenna, the first antenna is electrically connected with the electronic tag chip and is used for receiving the radio-frequency signal and converting the radio-frequency signal into induction current to be supplied to the electronic tag chip; the electronic tag chip is used for storing the product information and returning the product information to the electronic tag reading-writing device through the antenna unit under the energy of the induced current; and the plane where the first antenna is located is perpendicular to the beam center of the radio-frequency signal and the surface of the metal product.
In one embodiment, the antenna unit further comprises a second antenna; the first antenna is electrically connected with the second antenna and used for providing the induced current for the second antenna; the second antenna is electrically connected with the electronic tag chip respectively and used for returning the product information stored in the electronic tag chip to the electronic tag reading-writing device under the energy of the induced current; the second antenna is attached to the surface of the metal product, and the plane where the first antenna is located is perpendicular to the plane where the second antenna is located.
In one embodiment, the electronic tag reading and writing device is fixed outside a production conveyor belt, a plurality of metal products are sequentially placed on the production conveyor belt and sequentially pass through positions aligned by the electronic tag reading and writing device, and the passive anti-metal electronic tag is arranged on the surface of each metal product; the electronic tag reading and writing device comprises: the system comprises a signal transceiving device, a data reading and writing device and a data analysis device, wherein the signal transceiving device is electrically connected with the data reading and writing device, and the data reading and writing device is electrically connected with the data analysis device, wherein the signal transceiving device is used for receiving a radio frequency signal instruction of the data reading and writing device, sending a radio frequency signal to each passive metal-resistant electronic tag passing through the electronic tag reading and writing device, receiving the product information returned by each passive metal-resistant electronic tag, and sending each product information to the data reading and writing device; the data reading and writing device is used for sending the radio frequency signal instruction to the signal receiving and sending device, receiving each piece of product information sent by the signal receiving and sending device, and generating a timestamp corresponding to each piece of product information one by one according to the receiving time of each piece of product information when each piece of product information is received; the data analysis device is also used for sending each piece of product information and the time stamp corresponding to each piece of product information one by one to the data analysis device; and the data analysis device is used for receiving each piece of product information and the time stamp corresponding to each piece of product information one by one, and determining the position of the metal product corresponding to each piece of product information according to the time stamp.
In one embodiment, the signal transceiving apparatus includes: the radio frequency antenna unit is electrically connected with the data reading and writing device through the radio frequency feeder, and is used for sending the radio frequency signal to each passive anti-metal electronic tag after receiving a radio frequency signal instruction of the data reading and writing device through the radio frequency feeder, receiving information of each product, and sending the information of each product to the data reading and writing device through the radio frequency feeder; the data read-write device comprises: the data processing unit is electrically connected with the radio frequency feeder line through the radio frequency antenna interface unit and is used for sending the radio frequency signal instruction to the radio frequency feeder line through the radio frequency antenna interface unit and receiving the information of each product sent by the radio frequency feeder line; the data processing unit is electrically connected with the data analysis device through the read-write interface unit and is used for generating a timestamp corresponding to each product information one by one according to the receiving time of each product information when each product information is received, and sending each product information and the timestamp corresponding to each product information one by one to the data analysis device through the read-write interface unit; the read-write power supply unit is used for supplying power to the radio frequency antenna interface unit, the data processing unit and the read-write interface unit; the data analysis device comprises a data analysis unit, a data analysis interface unit and a data analysis power supply unit, wherein the data analysis unit is electrically connected with the read-write interface unit through the data analysis interface unit and is used for receiving the product information sent by the read-write interface unit and the time stamps corresponding to the product information one by one through the data analysis interface unit and determining the position of the metal product corresponding to the product information according to the time stamps; and the data analysis power supply unit is used for supplying power to the data analysis unit and the data analysis interface unit.
In an embodiment, the data reading and writing device is further configured to detect a signal intensity value of each piece of product information when each piece of product information is received, and send the signal intensity value corresponding to each piece of product information one to the data analysis device; the data analysis device is configured to receive the signal strength value corresponding to each piece of product information one to one, and determine whether each piece of product information is valid product information according to a preset lower threshold and a preset upper threshold, where when the signal strength value corresponding to the piece of product information is in the preset lower threshold and the preset upper threshold, it is determined that the piece of product information is valid product information, and when the signal strength value corresponding to the piece of product information is smaller than the preset lower threshold or larger than the preset upper threshold, it is determined that the piece of product information is invalid product information, and delete the piece of product information and the timestamp corresponding to the piece of product information; the data analysis device is further configured to determine, based on the timestamp corresponding to each piece of valid product information, a location of a metal product corresponding to each piece of valid product information.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
in the passive anti-metal electronic tag provided by the application, the receiving action in the receiving and sending actions of the electronic tag, namely the action of receiving the radio frequency signal sent by the electronic tag reading and writing device and converting the radio frequency signal into the induced current, is independently set to be executed by the first antenna, and the structure of the passive anti-metal electronic tag is set to be the wave beam center of the radio frequency signal which can be vertical to the plane of the first antenna and the surface of the metal product, when the passive anti-metal electronic tag is used, the plane of the first antenna is vertical to the wave beam center of the radio frequency signal and the surface of the metal product, the coil of the first antenna can be vertical to the wave beam center of the radio frequency signal and is independent of the surface of the metal product, the effective induced current can be generated in the coil of the first antenna in the radio frequency reading process, and the RFID electronic tag in the prior art can be prevented from being attached to the surface of the metal product, when the metal product contacts with the antenna executing the receiving action, a closed loop cannot be formed, so that the antenna executing the receiving action cannot generate effective induced current, and further, the problem that the energy of the RFID electronic tag is absorbed by the metal product exists.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front plan view of a passive metal-resistant electronic tag according to an embodiment of the present disclosure.
Fig. 2 is a back top view of a passive metal-resistant electronic tag provided by an embodiment of the present application after a substrate layer is torn off;
fig. 3 is a three-dimensional structure diagram of a passive anti-metal electronic tag according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a passive anti-metal electronic tag identification system according to a second embodiment of the present application.
Detailed Description
The embodiment of the application provides a passive anti-metal electronic tag and an identification system, and solves the problem that in the prior art, the energy of the RFID electronic tag is absorbed by a metal product because the RFID electronic tag is attached to the surface of the metal product.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
in the passive anti-metal electronic tag provided by the application, the receiving action in the receiving and sending actions of the electronic tag, namely the action of receiving the radio frequency signal sent by the electronic tag reading and writing device and converting the radio frequency signal into the induced current, is independently set to be executed by the first antenna, and the structure of the passive anti-metal electronic tag is set to be the wave beam center of the radio frequency signal which can be vertical to the plane of the first antenna and the surface of the metal product, when the passive anti-metal electronic tag is used, the plane of the first antenna is vertical to the wave beam center of the radio frequency signal and the surface of the metal product, the coil of the first antenna can be vertical to the wave beam center of the radio frequency signal and is independent of the surface of the metal product, the effective induced current can be generated in the coil of the first antenna in the radio frequency reading process, and the RFID electronic tag in the prior art can be prevented from being attached to the surface of the metal product, when the metal product contacts with the antenna executing the receiving action, a closed loop cannot be formed, so that the antenna executing the receiving action cannot generate effective induced current, and further, the problem that the energy of the RFID electronic tag is absorbed by the metal product exists.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, the electrical connection according to the present application means direct connection between both the mutually connected parts or indirect connection through a medium (for example, a cable, a metal foil, or the like).
Example one
As shown in fig. 1, 2 and 3, the present embodiment provides a passive metal-resistant electronic tag 1, which is disposed on a surface of a metal product when in use, so as to feed back product information of the metal product stored in the electronic tag reader/writer to the electronic tag reader/writer when the electronic tag reader/writer sends a radio frequency signal to the electronic tag reader/writer, where the electronic tag 1 includes:
The first antenna 1181 is electrically connected to the electronic tag chip 119, and is configured to receive the radio frequency signal, convert the radio frequency signal into an induced current, and provide the induced current to the electronic tag chip 119.
In practical implementation, the first antenna 1181 is a coil having a closed loop, and forms an effective induced current during the rf reading.
And the electronic tag chip 119 is used for storing the product information and returning the product information to the electronic tag reading and writing device through the antenna unit 118 under the energy of the induced current.
In practical implementation, the electronic tag chip 119 is small and embedded in the first antenna 1181, the electronic tag chip 119 has a data storage unit that can be read and written by radio frequency, product information is stored in the data storage unit, and the electronic tag chip 119 is configured to send the product information to the antenna unit 118 under the energy of the induced current, so that the antenna unit 118 returns the product information to the electronic tag reading and writing device.
The plane of the first antenna 1181 may be perpendicular to the beam center of the rf signal and the surface of the metal product.
In the present application, the plane where the first antenna 1181 is located is perpendicular to the beam center of the radio frequency signal, so that the maximum magnetic flux can be ensured to pass through the coil of the first antenna 1181, and then a sufficiently strong induced current is generated.
The applicant finds that, in the prior art, an electronic tag on the surface of a metal product is of a planar structure, that is, the whole antenna is attached to the surface of the metal product, on the first hand, when an electronic tag reading and writing device sends a radio-frequency signal to the antenna, an effective closed loop cannot be formed due to the fact that the antenna is in contact with the metal product, induced current is generated, and further the electronic tag cannot well obtain energy provided by the induced current to feed back product information, and on the second hand, when the antenna is attached to the surface of the metal product, induction of the antenna on the radio-frequency signal is weakened, so that the radio-frequency distance is shortened, and the sensitivity is lowered.
Therefore, in the application, the actions of receiving the radio frequency signal sent by the electronic tag reading and writing device and converting the radio frequency signal into the induced current are independently set to be executed by the first antenna, the structure of the passive anti-metal electronic tag is set to be that the plane of the first antenna can be perpendicular to the beam center of the radio frequency signal and the surface of the metal product, when the passive anti-metal electronic tag is used, the plane of the first antenna is perpendicular to the beam center of the radio frequency signal and the surface of the metal product, the coil of the first antenna can be perpendicular to the beam center of the radio frequency signal and is independent of the surface of the metal product, the effective induced current can be generated in the coil of the first antenna in the radio frequency reading process, and when the metal product is contacted with the antenna executing the receiving action when the RFID electronic tag is attached to the surface of the metal product in the prior art, the antenna can not generate effective induction current, and the energy of the RFID electronic tag can not be absorbed by the metal product.
It should be noted that, in this embodiment, the plane where the first antenna 1181 is located may be perpendicular to the beam center of the radio frequency signal and the surface of the metal product, and includes: the plane where the first antenna 1181 is located always keeps a vertical relationship with the beam center of the radio frequency signal and the state of the surface of the metal product, or the plane where the first antenna 1181 is located can be made vertical to the beam center of the radio frequency signal and the surface of the metal product by bending or the like when necessary.
As an alternative embodiment, the antenna unit 118 further includes a second antenna 1182;
the first antenna 1181 is electrically connected to the second antenna 1182, and configured to provide an induced current to the second antenna 1182;
the second antenna 1182 is directly or indirectly connected to the electronic tag chip 119, and is configured to return product information stored in the electronic tag chip 119 to the electronic tag read-write device under the energy of the induced current;
the second antenna 1182 may be attached to the surface of the metal product, and a plane where the first antenna 1181 is located may be perpendicular to a plane where the second antenna 1182 is located.
Specifically, when the electronic tag 1 is used, the second antenna 1182 is attached to the surface of the metal product, the plane where the first antenna 1181 is located extends along a direction perpendicular to the plane where the second antenna 1182 is located (i.e., perpendicular to the surface of the metal product), and the structure of the whole electronic tag 1 is a three-dimensional tag, rather than a planar tag in a conventional structure.
In the application, the second antenna returns the product information stored in the electronic tag chip 119 to the electronic tag reading and writing device, and because the second antenna 1182 is attached to the surface of the metal product, the size of the second antenna 1182 is further enlarged by the metal product as a part of the second antenna 1182, so that the antenna gain is increased, and the signal effect is enhanced.
In the present application, the "collecting" operation is considered to be influenced by the collected metal product: receiving a radio frequency signal sent by an electronic tag reading and writing device and converting the radio frequency signal into an induced current, and performing 'sending' action: the product information stored in the electronic tag chip 119 is returned to the electronic tag read-write device without being influenced, so that the receiving action and the sending action are divided into two antennae to be executed, the receiving action is independently sent out and executed by the first antenna, the influence of the metal product on the induction of the first antenna is avoided by improving the spatial structure of the first antenna, and meanwhile, the executor of the sending action, namely the second antenna, is attached to the surface of the metal product, so that the influence of the metal product is changed from the disadvantage to the advantage.
As an optional embodiment, the electronic tag further includes a substrate layer 11, and the first antenna 1181, the electronic tag chip 119 and the second antenna 1182 are disposed on the substrate layer 11;
the substrate layer 11 is formed by a bendable structure, and the bendable structure is used for bending the substrate layer 11 when the electronic tag 1 is used, so that when the bent substrate layer 11 is arranged on the surface of a metal product, the plane where the first antenna 1181 is located is perpendicular to the beam center of the radio frequency signal, the second antenna 1182 is attached to the surface of the metal product, and the plane where the first antenna 1181 is located is perpendicular to the plane where the second antenna 1182 is located.
In this embodiment, by setting the substrate layer 11 to be a bendable structure, it is ensured that when the electronic tag 1 is used, the substrate layer 11 is bent, so that the substrate layer 11 after bending is disposed on the surface of the metal product, the plane where the first antenna 1181 is located is perpendicular to the beam center of the radio frequency signal, the second antenna 1182 is attached to the surface of the metal product, and the plane where the first antenna 1181 is located is perpendicular to the plane where the second antenna 1182 is located, thereby achieving the passive anti-metal electronic tag 1 structure.
It should be noted that, in this embodiment, after being bent, the plane where the first antenna 1181 is located and the plane where the second antenna 1182 is located are located on two different planes, so that the first antenna 1181 and the second antenna 1182 need to be electrically connected through a foldable material, and specifically, a bendable flexible connection metal wire or a metal foil may be used for electrical connection.
As an alternative embodiment, the bendable structure includes a first bending line 111, a second bending line 112, and a third bending line 113, where the first bending line 111, the second bending line 112, and the third bending line 113 are sequentially disposed on the substrate layer 11 at intervals;
a first bending area 114 is formed by the first bending line 111 and the first side edge of the substrate layer 11, a second bending area 115 is formed by the first bending line 111 and the second bending line 112, a third bending area 116 is formed by the second bending line 112 and the third bending line 113, and a fourth bending area 117 is formed by the third bending line 113 and the second side edge of the substrate layer 11;
the first antenna 1181 is disposed on the back of the third bending region 116, and the second antenna 1182 is disposed on the back of the fourth bending region 117;
when the electronic tag 1 is used, the substrate layer 11 is bent, so that when the bent substrate layer 11 is disposed on the surface of a metal product, the back of the first bending region 114 and the back of the fourth bending region 117 are respectively attached to the surface of the metal product, the back of the second bending region 115 is attached to the back of the third bending region 116, the third bending region 116 is perpendicular to the fourth bending region 117, and the third bending region 116 is perpendicular to the beam center of the radio frequency signal.
In this embodiment, a specific bendable structure is provided to support bending.
As an example, in the present embodiment, the bending may be performed by:
taking the fourth bending area 117 as a horizontal plane, bending the first bending area 114 upwards by 90 degrees along the first bending line 111, bending the second bending area 115 downwards by 180 degrees along the second bending line 112, adhering the back of the second bending area 115 and the back of the third bending area 116 together, bending the third bending area 116 upwards by 90 degrees along the third bending line 113, and adhering the back of the first bending area 114 and the back of the fourth bending area 117 to the surface of the metal product, wherein the first bending area 114 and the fourth bending area 117 are in the same direction, so that the substrate layer 11 after bending is adhered to the surface of the metal product, and the back of the first bending area 114 and the back of the fourth bending area 117 are adhered to the surface of the metal object, at this time, the third bending area 116 is perpendicular to the fourth bending area 117, and meanwhile, the installation direction needs to ensure that the third bending area 116 is perpendicular to the beam center of the radio frequency signal, so as to be able to receive.
As an optional embodiment, a non-setting adhesive 12 is further disposed on the substrate layer 11;
the electronic tag 1 further includes: the substrate layer 13 is bonded on the substrate layer 11 through the adhesive sticker 12, and the first antenna 1181, the second antenna 1182 and the electronic tag chip 119 are embedded between the substrate layer 13 and the substrate layer 11;
and the substrate layer 13 is used for tearing off the substrate layer 13 when the electronic tag 1 is used, so that the second antenna 1182 is in direct contact with the metal product when the back surface of the fourth bending area 117 is attached to the surface of the metal product.
Specifically, the substrate layer 11 adopts coated paper, the substrate layer 11 has front and back two sides, the substrate layer 11 overall dimension is 117mm 40mm, the non-setting adhesive 12 sets up at the substrate layer 11 back, first antenna 1181 and second antenna 1182 are pasted in the one side that non-setting adhesive 12 kept away from substrate layer 11, substrate layer 13 adopts backing paper, substrate layer 13 overall dimension is 117mm 40mm, the position that is not covered by first antenna 1181 and second antenna 1182 bonds in substrate layer 13 and the non-setting adhesive 12, during the bonding, substrate layer 11 and substrate layer 13 four corners align.
In the embodiment, the electronic tag 1 convenient to use is provided, and after being bent, the substrate layer 13 is torn off and directly adhered to the surface of a metal product through the adhesive sticker 12.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
in the passive anti-metal electronic tag provided by the application, the receiving action in the receiving and sending actions of the electronic tag, namely the action of receiving the radio frequency signal sent by the electronic tag reading and writing device and converting the radio frequency signal into the induced current, is independently set to be executed by the first antenna, and the structure of the passive anti-metal electronic tag is set to be the plane where the first antenna is located and can be perpendicular to the beam center of the radio frequency signal and the surface of the metal product, when the passive anti-metal electronic tag is used, the plane where the first antenna is located is perpendicular to the beam center of the radio frequency signal and is perpendicular to the surface of the metal product, the coil of the first antenna can be perpendicular to the beam center of the radio frequency signal and is independent of the surface of the metal product, the effective induced current can be generated in the coil of the first antenna in the radio frequency reading process, and the condition that the RFID electronic tag is attached to the surface of the metal product in the, when the metal product contacts with the antenna executing the receiving action, a closed loop cannot be formed, so that the antenna executing the receiving action cannot generate effective induced current, and further, the problem that the energy of the RFID electronic tag is absorbed by the metal product exists.
Example two
As shown in fig. 1, 2, 3, and 4, the present embodiment provides a passive anti-metal electronic tag identification system, including:
the electronic tag reading and writing device comprises an electronic tag reading and writing device 2 arranged outside a metal product and a passive anti-metal electronic tag 1 arranged on the surface of the metal product;
the electronic tag reading and writing device 2 is used for sending radio frequency signals to the passive anti-metal electronic tag 1 so that the passive anti-metal electronic tag 1 returns the stored product information, and the product information is the information of the metal product where the passive anti-metal electronic tag 1 is located;
passive anti-metal electronic tag 1, comprising: the antenna unit 118 includes a first antenna 1181, the first antenna 1181 is electrically connected to the electronic tag chip 119, and is configured to receive a radio frequency signal, convert the radio frequency signal into an induced current, and provide the induced current to the electronic tag chip 119; the electronic tag chip 119 is used for storing product information and returning the product information to the electronic tag reading and writing device 2 through the antenna unit 118 under the energy of the induced current;
the plane of the first antenna 1181 is perpendicular to the beam center of the radio frequency signal and the surface of the metal product.
In this embodiment, an induced current that is not absorbed by the metal product can be generated in the coil of the first antenna, and it can be avoided that when the RFID tag is attached to the surface of the metal product in the prior art, and the metal product is in contact with the antenna performing the "receiving" action, a closed loop cannot be formed, so that the antenna performing the "receiving" action cannot generate electromagnetic induction to generate the induced current, and further, there is a problem that the energy of the RFID tag is absorbed by the metal product, for the same reason as in embodiment one, which is not described herein again.
As an alternative embodiment, the antenna unit 118 further includes a second antenna 1182;
the first antenna 1181 is electrically connected to the second antenna 1182, and configured to provide an induced current to the second antenna 1182;
the second antenna 1182 is directly or indirectly connected to the electronic tag chip 119, and is configured to return product information stored in the electronic tag chip 119 to the electronic tag reading and writing device 2 under the energy of the induced current;
the second antenna 1182 is attached to the surface of the metal product, and the plane where the first antenna 1181 is located is perpendicular to the plane where the second antenna 1182 is located.
In this embodiment, the metal product is used as a part of the second antenna 1182 to further amplify the size of the second antenna 1182, thereby increasing the antenna gain and enhancing the signal effect, which is the same as that in the first embodiment and is not described herein again.
As an optional embodiment, the electronic tag reading and writing device 2 is fixed outside the production conveyor belt, a plurality of metal products are sequentially placed on the production conveyor belt and sequentially pass through the positions aligned by the electronic tag reading and writing device 2, and a passive anti-metal electronic tag 1 is arranged on the surface of each metal product.
The electronic tag read/write device 2 includes: the system comprises a signal transceiving device 21, a data reading and writing device 22 and a data analysis device 23, wherein the signal transceiving device 21 and the data reading and writing device 22 are electrically connected through a hardware interface, and the data reading and writing device 22 and the data analysis device 23 are electrically connected through a TCP/IP network.
In practical application, the electronic tag reading and writing device 2 is installed outside a production conveyor belt of a production line, and specifically, the beam center direction of the signal transceiver 21 is perpendicular to the advancing direction of the production line.
The signal transceiver 21 is configured to receive a radio frequency signal instruction of the data reader/writer 22, send a radio frequency signal to each passive metal-resistant electronic tag 1 passing through the electronic tag reader/writer 2, receive product information returned by each passive metal-resistant electronic tag 1, and send each product information to the data reader/writer 22;
the data reading and writing device 22 is used for sending a radio frequency signal instruction to the signal transceiving device 21, receiving each piece of product information sent by the signal transceiving device 21, and generating a timestamp corresponding to each piece of product information one by one according to the receiving time of each piece of product information when each piece of product information is received; and is further configured to send each product information, a time stamp corresponding to each product information one-to-one to the data analysis device 23;
and the data analysis device 23 is configured to receive each piece of product information and the time stamp corresponding to each piece of product information one to one, and determine a position of the metal product corresponding to each piece of product information according to the time stamp.
It should be noted that some anti-metal tags and identification systems thereof exist in the prior art, but the anti-metal tags and the identification systems thereof cannot accurately locate and track the position of a metal product on a production line, and cannot realize one-to-one matching between cargo information stored in an electronic tag identified by the system and the position of the cargo.
In the embodiment, by means of the timestamp, the product information of the read electronic tag 1 and the metal product corresponding to the electronic tag 1 are matched one by one in sequence, effective identification of the countermeasure metal electronic tag 1 is finally completed, and accurate positioning and tracking of the metal product on the metal product production line are realized.
As an alternative embodiment, the signal transceiver 21 includes: a radio frequency antenna element 211, a radio frequency feed 212, wherein,
the radio frequency antenna unit 211 is electrically connected to the data read/write device 22 through the radio frequency feeder 212, and is configured to send a radio frequency signal to each passive anti-metal electronic tag 1 after receiving a radio frequency signal instruction of the data read/write device 22 through the radio frequency feeder 212, and is also configured to receive information of each product, and send the information of each product to the data read/write device 22 through the radio frequency feeder 212;
the data read/write device 22 includes: a radio frequency antenna interface unit 221, a data processing unit 222, a read/write interface unit 223, and a read/write power supply unit 224, wherein,
the data processing unit 222 is electrically connected to the radio frequency feeder 212 through the radio frequency antenna interface unit 221, and is configured to send a radio frequency signal instruction to the radio frequency feeder 212 through the radio frequency antenna interface unit 221 and receive each piece of product information sent by the radio frequency feeder 212;
the data processing unit 222 is further electrically connected to the data analysis device 23 through the read-write interface unit 223, and is configured to generate a timestamp corresponding to each product information one to one according to the receiving time of each product information when each product information is received, and send each product information and the timestamp corresponding to each product information one to the data analysis device 23 through the read-write interface unit 223;
a read/write power supply unit 224, configured to supply power to the rf antenna interface unit 221, the data processing unit 222, and the read/write interface unit 223;
the data analysis device 23 comprises a data analysis unit 231, a data analysis interface unit 232, and a data analysis power supply unit 233, wherein,
the data analysis unit 231 is electrically connected with the read-write interface unit 223 through the data analysis interface unit 232, and is configured to receive, through the data analysis interface unit 232, each piece of product information and a timestamp corresponding to each piece of product information, which are sent by the read-write interface unit 223, and determine, according to the timestamp, a position of a metal product corresponding to each piece of product information;
and a data analysis power supply unit 233 for supplying power to the data analysis unit 231 and the data analysis interface unit 232.
As an optional embodiment, the data reading and writing device 22 is further configured to detect a signal intensity value of each product information when each product information is received, and send the signal intensity value corresponding to each product information one to the data analysis device 23;
the data analysis device 23 is configured to receive a signal intensity value corresponding to each piece of product information one to one, and determine whether each piece of product information is valid product information according to a preset lower threshold and a preset upper threshold, where when the signal intensity value corresponding to the piece of product information is in the preset lower threshold and the preset upper threshold, it is determined that the piece of product information is valid product information, and when the signal intensity value corresponding to the piece of product information is smaller than the preset lower threshold or larger than the preset upper threshold, it is determined that the piece of product information is invalid product information, and delete the piece of product information and a timestamp corresponding to the piece of product information;
and the data analysis device 23 is further configured to determine, based on the timestamp corresponding to each valid product information, a location where the metal product corresponding to each valid product information is located.
The specific use method comprises the following steps:
the electronic tag reading and writing device 2 continuously sends the electronic tag reading signal (i.e. the radio frequency signal command) in real time through the radio frequency antenna unit 211 in the signal transceiving device 21;
when a metal product attached with the passive anti-metal electronic tag 1 passes through the identification area of the signal transceiver 21, the radio frequency antenna unit 211 receives a signal (product information) returned by the electronic tag 1 and then transmits the signal to the data reader 22 through the radio frequency feeder 212;
the data processing unit 222 of the data reading and writing device 22 continuously records the time stamp of the return signal of the electronic tag 1, the information of the data storage unit in the electronic tag chip 119, and the signal intensity value of the return signal of the electronic tag 1 in real time, and forms a complete data;
the data processing unit 222 of the data reading and writing device 22 continuously sends each complete data item to the data analysis interface unit 232 in real time through the reading and writing interface unit 223;
the data analysis unit 231 determines the signal intensity value of each piece of product information returned by the received electronic tag 1 according to a preset lower threshold and a preset upper threshold, determines each piece of product information higher than the lower threshold and lower than the upper threshold as valid product information, the corresponding complete data is valid data, each piece of product information which is lower than a lower threshold or higher than an upper threshold is judged as invalid product information, and judging the corresponding complete data as invalid data, sequencing the product information based on the timestamp in each piece of valid data, wherein the timestamp is in the first product information and indicates that the position of the metal product attached to the electronic tag 1 storing the product information is the first, the timestamp is in the second product information and indicates that the position of the metal product attached to the electronic tag 1 storing the product information is the second, and so on … ….
The embodiment reduces the interference of the external environment on the reading of the passive anti-metal electronic tag 1 and improves the effective reading rate by acquiring the signal intensity value.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
in the passive anti-metal electronic tag identification system provided by the application, the receiving action in the receiving and sending actions of the electronic tag, namely the action of receiving the radio frequency signal sent by the electronic tag reading and writing device and converting the radio frequency signal into the induced current, is independently set to be executed by the first antenna, and the structure of the passive anti-metal electronic tag is set to be that the plane of the first antenna can be vertical to the beam center of the radio frequency signal and the surface of the metal product, when the passive anti-metal electronic tag is used, the plane of the first antenna is vertical to the beam center of the radio frequency signal and the surface of the metal product, the coil of the first antenna can be vertical to the beam center of the radio frequency signal and is independent of the surface of the metal product, the effective induced current can be generated in the coil of the first antenna in the radio frequency reading process, and the condition that the RFID electronic tag in the prior art is attached to the surface of the metal product can be avoided, when the metal product contacts with the antenna executing the receiving action, a closed loop cannot be formed, so that the antenna executing the receiving action cannot generate effective induced current, and further, the problem that the energy of the RFID electronic tag is absorbed by the metal product exists.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A passive anti-metal electronic tag is characterized in that when in use, the passive anti-metal electronic tag is arranged on the surface of a metal product so as to feed back product information of the metal product stored by the passive anti-metal electronic tag to an electronic tag read-write device when the electronic tag read-write device sends a radio frequency signal to the passive anti-metal electronic tag, and the electronic tag comprises:
an antenna unit, an electronic tag chip, the antenna unit comprising a first antenna, wherein,
the first antenna is electrically connected with the electronic tag chip and used for receiving the radio-frequency signal and converting the radio-frequency signal into induction current to be supplied to the electronic tag chip;
the electronic tag chip is used for storing the product information and returning the product information to the electronic tag reading-writing device through the antenna unit under the energy of the induced current;
the plane where the first antenna is located can be perpendicular to the beam center of the radio frequency signal and the surface of the metal product.
2. The passive metal-resistant electronic tag of claim 1, wherein the antenna unit further comprises a second antenna;
the first antenna is electrically connected with the second antenna and used for providing the induced current for the second antenna;
the second antenna is directly or indirectly connected with the electronic tag chip and is used for returning the product information stored in the electronic tag chip to the electronic tag reading and writing device under the energy of the induced current;
the second antenna can be attached to the surface of the metal product, and the plane where the first antenna is located can be perpendicular to the plane where the second antenna is located.
3. The passive metal-resistant electronic tag of claim 2, further comprising a substrate layer, the first antenna, the electronic tag chip, and the second antenna being disposed on the substrate layer;
the substrate layer comprises the structure that can buckle, the structure that can buckle is used for when using during the electronic tags the substrate layer is buckled, so that after buckling the substrate layer sets up when the metal product surface, the plane perpendicular to at first antenna place radio frequency signal's beam center, the second antenna with the laminating of metal product surface, the plane at first antenna place with the plane perpendicular at second antenna place.
4. The passive metal-resistant electronic tag according to claim 3, wherein the bendable structure comprises a first bending line, a second bending line and a third bending line, and the first bending line, the second bending line and the third bending line are sequentially arranged on the substrate layer at intervals;
the first bending line and the first side edge of the substrate layer form a first bending area, the first bending line and the second bending line form a second bending area, the second bending line and the third bending line form a third bending area, and the third bending line and the second side edge of the substrate layer form a fourth bending area;
the first antenna is arranged on the back of the third bending area, and the second antenna is arranged on the back of the fourth bending area;
when the electronic tag is used, the substrate layer is bent, so that the bent substrate layer is arranged on the surface of a metal product, the back of the first bending area and the back of the fourth bending area are respectively attached to the surface of the metal product, the back of the second bending area and the back of the third bending area are attached to each other, the third bending area is perpendicular to the fourth bending area, and the third bending area is perpendicular to the beam center of the radio-frequency signal.
5. The passive metal-resistant electronic tag of claim 4, wherein the substrate layer is further provided with a non-setting adhesive;
the electronic tag further comprises: the substrate layer is bonded on the substrate layer through the adhesive sticker, and the first antenna, the second antenna and the electronic tag chip are embedded between the substrate layer and the substrate layer;
the substrate layer is used for tearing off the substrate layer when the electronic tag is used, so that the back face of the fourth bending area is attached to the surface of the metal product, and the second antenna is in direct contact with the metal product.
6. A passive anti-metal electronic tag identification system, comprising:
the electronic tag reading and writing device is arranged outside the metal product, and the passive anti-metal electronic tag is arranged on the surface of the metal product;
the electronic tag reading-writing device is used for sending a radio frequency signal to the passive anti-metal electronic tag so that the passive anti-metal electronic tag returns self-stored product information, wherein the product information is information of the metal product where the passive anti-metal electronic tag is located;
the passive anti-metal electronic tag comprises: the antenna unit comprises a first antenna, the first antenna is electrically connected with the electronic tag chip and is used for receiving the radio-frequency signal and converting the radio-frequency signal into induction current to be supplied to the electronic tag chip; the electronic tag chip is used for storing the product information and returning the product information to the electronic tag reading-writing device through the antenna unit under the energy of the induced current;
and the plane where the first antenna is located is perpendicular to the beam center of the radio-frequency signal and the surface of the metal product.
7. The passive metal-resistant electronic tag identification system of claim 6, wherein the antenna unit further comprises a second antenna;
the first antenna is electrically connected with the second antenna and used for providing the induced current for the second antenna;
the second antenna is electrically connected with the electronic tag chip respectively and used for returning the product information stored in the electronic tag chip to the electronic tag reading-writing device under the energy of the induced current;
the second antenna is attached to the surface of the metal product, and the plane where the first antenna is located is perpendicular to the plane where the second antenna is located.
8. The passive metal-resistant electronic tag identification system according to claim 7, wherein the electronic tag reading and writing device is fixed outside a production conveyor belt, a plurality of metal products are sequentially placed on the production conveyor belt and sequentially pass through positions aligned by the electronic tag reading and writing device, and a passive metal-resistant electronic tag is arranged on the surface of each metal product;
the electronic tag reading and writing device comprises: a signal transceiver, a data read-write device and a data analysis device, wherein the signal transceiver is electrically connected with the data read-write device, the data read-write device is electrically connected with the data analysis device, wherein,
the signal transceiver is used for receiving a radio frequency signal instruction of the data read-write device, sending the radio frequency signal to each passive anti-metal electronic tag passing through the electronic tag read-write device, receiving the product information returned by each passive anti-metal electronic tag, and sending each product information to the data read-write device;
the data reading and writing device is used for sending the radio frequency signal instruction to the signal receiving and sending device, receiving each piece of product information sent by the signal receiving and sending device, and generating a timestamp corresponding to each piece of product information one by one according to the receiving time of each piece of product information when each piece of product information is received; the data analysis device is also used for sending each piece of product information and the time stamp corresponding to each piece of product information one by one to the data analysis device;
and the data analysis device is used for receiving each piece of product information and the time stamp corresponding to each piece of product information one by one, and determining the position of the metal product corresponding to each piece of product information according to the time stamp.
9. The passive metal-resistant electronic tag identification system of claim 8,
the signal transceiving device comprises: a radio frequency antenna unit, a radio frequency feeder, wherein,
the radio frequency antenna unit is electrically connected with the data reading and writing device through the radio frequency feeder line, and is used for sending the radio frequency signal to each passive anti-metal electronic tag after receiving a radio frequency signal instruction of the data reading and writing device through the radio frequency feeder line, receiving the information of each product, and sending the information of each product to the data reading and writing device through the radio frequency feeder line;
the data read-write device comprises: a radio frequency antenna interface unit, a data processing unit, a read-write interface unit, a read-write power supply unit, wherein,
the data processing unit is electrically connected with the radio frequency feeder line through the radio frequency antenna interface unit and is used for sending the radio frequency signal instruction to the radio frequency feeder line through the radio frequency antenna interface unit and receiving the information of each product sent by the radio frequency feeder line;
the data processing unit is electrically connected with the data analysis device through the read-write interface unit and is used for generating a timestamp corresponding to each product information one by one according to the receiving time of each product information when each product information is received, and sending each product information and the timestamp corresponding to each product information one by one to the data analysis device through the read-write interface unit;
the read-write power supply unit is used for supplying power to the radio frequency antenna interface unit, the data processing unit and the read-write interface unit;
the data analysis device comprises a data analysis unit, a data analysis interface unit and a data analysis power supply unit, wherein,
the data analysis unit is electrically connected with the read-write interface unit through the data analysis interface unit, and is used for receiving the product information and the timestamps corresponding to the product information one by one sent by the read-write interface unit through the data analysis interface unit and determining the position of the metal product corresponding to the product information according to the timestamps;
and the data analysis power supply unit is used for supplying power to the data analysis unit and the data analysis interface unit.
10. The passive metal-resistant electronic tag identification system of claim 8, wherein the data reading and writing device is further configured to detect a signal intensity value of each piece of product information when each piece of product information is received, and send the signal intensity value corresponding to each piece of product information one to the data analysis device;
the data analysis device is configured to receive the signal strength value corresponding to each piece of product information one to one, and determine whether each piece of product information is valid product information according to a preset lower threshold and a preset upper threshold, where when the signal strength value corresponding to the piece of product information is in the preset lower threshold and the preset upper threshold, it is determined that the piece of product information is valid product information, and when the signal strength value corresponding to the piece of product information is smaller than the preset lower threshold or larger than the preset upper threshold, it is determined that the piece of product information is invalid product information, and delete the piece of product information and the timestamp corresponding to the piece of product information;
the data analysis device is further configured to determine, based on the timestamp corresponding to each piece of valid product information, a location of a metal product corresponding to each piece of valid product information.
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| CN202021707591.3U CN212724059U (en) | 2020-08-17 | 2020-08-17 | Passive anti-metal electronic tag and identification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110490016A (en) * | 2019-07-26 | 2019-11-22 | 浙江立芯软件科技有限公司 | A kind of radio frequency identification system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110490016A (en) * | 2019-07-26 | 2019-11-22 | 浙江立芯软件科技有限公司 | A kind of radio frequency identification system |
| CN110490016B (en) * | 2019-07-26 | 2023-06-23 | 立芯科技股份有限公司 | Wireless radio frequency identification system |
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