CN114168014B - Intelligent super-surface based on RFID technology and control method thereof - Google Patents
Intelligent super-surface based on RFID technology and control method thereof Download PDFInfo
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- CN114168014B CN114168014B CN202111291351.9A CN202111291351A CN114168014B CN 114168014 B CN114168014 B CN 114168014B CN 202111291351 A CN202111291351 A CN 202111291351A CN 114168014 B CN114168014 B CN 114168014B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
- G06F3/0433—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves in which the acoustic waves are either generated by a movable member and propagated within a surface layer or propagated within a surface layer and captured by a movable member
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
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Abstract
The invention discloses an intelligent super-surface based on an RFID technology and a control method thereof, wherein the intelligent super-surface based on the RFID technology comprises a super-surface unit, an RFID unit, a reactance unit and a switch unit; the RFID unit is used for receiving an external control signal and changing the on-off state of the switch unit; a switch element is arranged between the reactance unit and the super-surface unit, when the switch unit is disconnected, the super-surface unit reflects corresponding electromagnetic wave signals according to the current incident signals, and when the switch unit is conducted, the reactance unit is connected with the super-surface unit, so that the phase of the reflected electromagnetic wave signals of the super-surface unit is changed, namely, in the space effect, after the reflected electromagnetic waves of a plurality of super-surface units are overlapped, the beam direction of the whole super-surface reflected signals is changed; therefore, the RFID unit is used for controlling the disconnection and connection between the super-surface unit and the reactance element, and the effect of regulating and controlling the super-surface reflected wave beam can be achieved under the condition that a power supply and a wired controller are not externally connected.
Description
Technical Field
The invention belongs to the technical field of electronics, and particularly relates to an intelligent super-surface based on an RFID technology and a control method thereof.
Background
Currently, 5G mobile communication is popular gradually, but the frequency band used by the mobile communication and the MIMO (multiple-input multiple-output) antenna technology have the disadvantages of small signal coverage and large power consumption, and affect the user experience. On the other hand, in the context of energy saving, emission reduction and carbon emission reduction, how to increase signal coverage without increasing power consumption is a common requirement of base station manufacturers and mobile service operators.
The existing information super surface provides a good idea for solving the problem. The super surface is designed at a third position outside the transmitting end and the receiving end to reflect the transmitted electromagnetic wave, so that the received signal strength of the receiving end is improved;
However, the existing super-surface units are controlled by using active circuits, a variable capacitance diode is connected with the super-surface units in series, and the capacitance value of the variable capacitance diode is adjusted by changing the voltage values of two electrodes of the variable capacitance diode so as to play a role in controlling the change of the impedance of the super-surface units; the scheme needs to provide bias voltage for the varactors, each super surface unit needs to be connected to a controller through physical leads, and excessive connecting leads and active circuits have the problems of excessive design and manufacturing cost and high energy consumption.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an intelligent super surface based on an RFID technology, and aims to solve the problems of complex design, high manufacturing cost and high energy consumption existing when the existing super surface is controlled by using an active circuit.
The invention adopts the following technical scheme to achieve the aim of the invention:
an intelligent super-surface based on an RFID technology comprises a super-surface unit, an RFID unit, a reactance unit and a switch unit;
one end of the super-surface unit is connected with the first end of the switch unit, the second end of the switch unit is connected with one end of the reactance unit, and the controlled end of the switch unit is connected with the RFID unit;
The RFID unit is used for receiving an external control signal to change the on-off state of the switch unit.
Further, the intelligent super-surface further comprises a supporting base material, and the super-surface unit, the RFID unit, the reactance unit and the switch unit are all arranged on the supporting base material.
Further, the RFID unit comprises an RFID chip and an antenna, and the antenna is physically connected with the RFID chip;
the antenna is used for receiving and transmitting signals when communicating with external equipment;
the control port of the RFID chip is physically connected to the switching unit.
Further, the antenna of the RFID unit is a super surface unit.
Further, the reactance unit is a capacitive or inductive device.
Further, the switching unit includes a switch having a programmable memory function;
the memory switch is used for receiving the control instruction of the RFID unit and keeping the corresponding on-off state.
Further, the memory switch and the switch unit are combined into a memristive, memcapacitor, memristive or memmagnetic device.
Further, the super surface unit and the RFID antenna are etched or printed on the support substrate.
Correspondingly, the invention also provides an intelligent super-surface device based on the RFID technology, which comprises a supporting structure and a plurality of super-surface units based on the RFID technology;
a plurality of intelligent super-surfaces based on RFID technology are arranged on the supporting structure.
The supporting structure is attached to the surface of a building wall.
Correspondingly, the invention also provides an intelligent super-surface control method based on the RFID technology, which is applied to the intelligent super-surface based on the RFID technology and comprises the following steps:
Writing unique identifiable ID (Identification information) into each RFID unit, and binding the ID with the position of the connected super-surface unit in an external system;
the RFID unit establishes communication connection with external equipment;
the external equipment calculates the reflected wave beam direction of the super surface and the impedance of the corresponding super surface unit according to the system requirement to obtain the on-off state of a switch unit connected with the super surface unit;
The RFID unit receives an adjusting signal of external equipment;
The RFID unit generates a corresponding control signal according to the adjusting signal, and the switch unit is controlled to connect or disconnect the super-surface unit and the reactance unit.
Further, the external device may be carried by an unmanned aerial vehicle to communicate with an RFID unit on a super surface of a building surface, and before the step of establishing a communication connection between the RFID unit and the external device, the method further includes the steps of:
Writing a uniquely identifiable ID to each RFID unit;
Binding the ID with the position of the super-surface unit;
determining the reflected beam direction of the super surface according to the use requirement;
determining a target super-surface unit needing to change impedance according to the reflected beam direction;
and the external equipment moves to the communication distance of the RFID unit through the unmanned aerial vehicle, and establishes communication connection with the RFID unit correspondingly connected with the target super-surface unit through the ID of the RFID unit.
Compared with the prior art, the invention has the beneficial effects that:
The intelligent super-surface based on the RFID technology comprises a super-surface unit, an RFID unit, a reactance unit and a switch unit; one end of the super-surface unit is connected with the first end of the switch unit, the second end of the switch unit is connected with one end of the reactance unit, and the controlled end of the switch unit is connected with the RFID unit; the RFID unit is used for receiving an external control signal to change the on-off state of the switch unit; a switching element is arranged between the reactance unit and the super-surface unit, when the switching element is disconnected, the phase of a reflected signal of the super-surface unit is different from the phase of a reflected signal of the switching element when the switching element is conducted, and the phase of the reflected signal of each super-surface unit is controlled, so that the beam direction of the signal reflected by the whole super-surface is regulated and controlled by external equipment; after the external equipment is disconnected with the RFID unit, the connection relation between the super-surface unit and the reactance unit is kept unchanged due to the memory function of the switch unit, so that the reflection azimuth of the super-surface to the incident signal is fixed, and when the direction of the reflected beam needs to be changed, the on-off state of the switch unit connected with the RFID unit is controlled through the external equipment, so that the direction of the reflected beam can be changed. The external equipment is communicated with the RFID unit to control the disconnection and connection of the switch unit, so that the dynamic controllability of the direction of the super-surface reflected beam is finally realized, and various connecting wires for wired connection with an external controller and using an active circuit are not needed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an intelligent subsurface unit based on RFID technology according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an application scenario of the prior art;
FIG. 3 is a schematic diagram of a prior art super surface unit structure;
FIG. 4 is a schematic diagram of an RFID unit in accordance with one embodiment of the present invention;
FIG. 5 is a schematic diagram of the structure of an intelligent subsurface unit based on RFID technology in an embodiment of the invention;
FIG. 6 is a schematic diagram of the structure of an intelligent subsurface based on RFID technology in an embodiment of the invention;
FIG. 7 is a flowchart of an intelligent subsurface control method based on RFID technology in an embodiment of the invention.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Super surface unit | 22 | Antenna |
| 2 | RFID unit | 3 | Reactance unit |
| 21 | RFID chip | 4 | Switch unit |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
RFID: is an abbreviation for radio frequency identification Radio Frequency Identification.
Metamaterial: METAMATERIAL, a class of man-made materials with special properties, which are not found in nature. They possess specific properties such as changing the propagation characteristics of light, electromagnetic waves.
Super surface: metasurface, which is an artificial layered material having a thickness less than the wavelength. The super surface can realize flexible and effective regulation and control of the characteristics of electromagnetic wave polarization, amplitude, phase, polarization mode, propagation mode and the like. A metasurface may be considered a two-dimensional correspondence of metamaterials.
Referring to fig. 1, an embodiment of the present invention provides an intelligent subsurface unit based on RFID technology, which includes a subsurface unit 1, an RFID unit 2, a reactance unit 3, and a switch unit 4;
one end of the super-surface unit 1 is connected with a first end of the switch unit 4, a second end of the switch unit 4 is connected with one end of the reactance unit 3, and a controlled end of the switch unit 4 is connected with the RFID unit 2;
The RFID unit 2 is configured to receive an external control signal to change the on-off state of the switching unit 4.
Specifically, referring to fig. 2-3, most of the prior art adopts an active circuit to control bias voltages at two ends of a varactor diode, so as to achieve the purpose of controlling the capacitance value of the diode and achieve the effect of adjusting the reactance value of the super surface; the scheme needs an external power supply to supply power to the diode, and needs complex physical wiring, a multipath controller and other devices, so that the energy consumption is high. In addition, because the super-surface is mostly used for being attached to the wall outside the building, the active super-surface needs complex installation procedures and regular maintenance, the beam direction of the existing passive super-surface cannot be dynamically changed, and when the direction of a reflected signal needs to be changed, the active super-surface is manually maintained or disassembled outside the building, so that the operation cost is high and a certain danger exists.
The intelligent super-surface based on the RFID technology in the embodiment is that a memory switch element is arranged between a reactance unit 3 and a super-surface unit 1, when the switch element is powered, the on-off state of the switch element is controlled in a programmable manner, and after a power supply is disconnected, the on-off state is kept unchanged; because the super-surface unit 1 has good reflection effect on electromagnetic waves in corresponding frequency bands, the reflected electromagnetic waves of a plurality of super-surface units are overlapped in space according to the phased array principle, so that the whole super-surface reflected electromagnetic waves form beams with certain directivity; when the switch unit 4 is turned off, the super-surface unit 1 reflects a corresponding electromagnetic wave signal according to a current incident signal, and when the switch unit 4 is turned on, the reactance unit 3 is connected with the super-surface unit 1, so that the phase of the reflected electromagnetic wave signal of the super-surface unit 1 is changed, and the beam direction and intensity of the whole super-surface reflected electromagnetic wave are changed; therefore, when the RFID unit 2 is connected with the switch unit 4, the external equipment and the RFID unit 2 can be disconnected and connected through controlling the switch unit 4, so that the effect of controlling the direction and intensity of the beam reflected by the super surface is achieved. The RFID unit 2 is used for being in communication connection with the outside, when the direction and the intensity of the reflected wave beam of the super surface need to be adjusted, namely the reflected wave beam is in communication connection with the RFID unit 2 through external equipment, the switch unit 4 is controlled to be closed or opened so as to realize the adjustment of the phase of the reflected signal of the super surface unit 1, and finally the purpose of adjusting the direction and the intensity of the wave beam of the reflected electromagnetic wave signal is achieved; because the method of adjusting the reflected beam direction and intensity of the super surface in this embodiment is implemented by the cooperation between the passive RFID unit 2 and the programmable memory switch unit 4, an external power supply and controller are not required. According to the embodiment, the reactance unit 3 is adopted to replace a diode in the prior art, and the passive reactance unit 3 can achieve the effect of changing the direction and intensity of the reflected beam of the super surface under the condition that an external power supply is not needed, so that the embodiment can work completely under the condition that the external power supply is not needed, and the effect of regulating and controlling the direction and intensity of the reflected beam of the super surface in a wireless dynamic mode is achieved through the RFID unit 2.
Further, the intelligent super-surface also comprises a supporting substrate, and the super-surface unit 1, the RFID unit 2, the reactance unit 3 and the switch unit 4 are all arranged on the supporting substrate.
Further, the super surface unit 1 and the RFID are etched or printed on the support substrate.
Specifically, the supporting substrate in this embodiment mainly plays a role in fixing, where the super surface unit 1 and the RFID are etched or printed on the supporting substrate, and the reactance unit 3 and the switch unit 4 may be connected to other device structures by means of soldering, mounting, and the like; more specifically, the antennas of the super surface unit 1 and the RFID unit 2 can be printed by metal copper or aluminum; the supporting base material can be made of epoxy resin of a PCB, and the material of the preferable base material can be FR-4, wherein FR-4 is a grade code of a flame-retardant material, and the grade code represents a material specification that the resin material can be extinguished by self after being burnt.
Further, referring to fig. 4, the RFID unit 2 includes an RFID chip 21 and an antenna 22, the antenna 22 being connected to the RFID chip 21;
the antenna 22 is used for receiving and transmitting signals when in communication connection with external equipment;
The RFID chip 21 is connected to the switch unit 4, and is configured to receive an instruction from an external device, and control an on-off state of the switch unit 4.
Specifically, in this embodiment, the antenna 22 is configured to send and receive signals when in communication connection with an external device, the control end of the RFID chip 21 is connected to the controlled end of the switch unit, and the RFID chip 21 sends a control signal to the controlled end of the switch unit 4 through the control end, so as to achieve the effect of controlling the switch unit 4; more specifically, the RFID unit 2 adopts an RFID tag in the UHF band, which includes an RFID chip 21 and an antenna 22, the antenna 22 is used for receiving or transmitting signals in communication connection with an external device, the RFID chip 21 is mainly used for storing preset information and responding to operations such as reading and rewriting of the external device, and meanwhile, the RFID chip 21 is connected with the switch unit 4, that is, the on-off state of the switch unit 4 can be controlled.
Further, referring to fig. 5, the antenna 22 is a super surface unit 1.
Specifically, in this embodiment, the part of the antenna 22 of the RFID unit 2 is replaced by the super-surface unit 1, so that the super-surface unit 1 plays a role of reflecting electromagnetic waves and simultaneously plays a role of multiplexing the receiving and transmitting signals of the antenna 22 of the RFID unit 2, so that the whole area of the intelligent super-surface based on the RFID technology in this embodiment can be smaller, and the effects of saving space and simplifying the arrangement of the super-surface units are achieved.
Further, the reactance unit 3 is a capacitor, an inductor or a resistor.
Specifically, the reactance unit 3 in the present embodiment is one element or a combination of plural elements of capacitance, inductance, or resistance; one end of the reactance element 3 is connected to the second end of the switching unit 4, and the other end of the reactance element 3 is grounded, specifically, may be grounded to the RFID chip 21 in the RFID unit 2.
More specifically, the reactance unit 3 is a capacitive or inductive device; wherein the capacitive or inductive device is capable of modifying its own resistance, capacitance or inductance value by programming control; when the device is specifically used, external equipment can be connected in a wireless mode, the capacitive or inductive device is programmed to modify the resistance, capacitance or inductance value of the capacitive or inductive device, the capacitive or inductive device changes the resistance, capacitance or inductance value of the capacitive or inductive device after receiving a programming instruction, the value is kept until the capacitive or inductive device is programmed next time, the external equipment is required to be connected for wireless power supply only when the control is programmed and modified in the whole process, and the corresponding reactance value can be kept under the condition of no external power supply after the attribute value of the capacitive or inductive device is programmed and modified; therefore, the effect of dynamically changing the reactance attribute of the super-surface unit 1 according to the requirement can be realized under the condition of no external power supply and wired connection control, and the beam direction reflected by the super-surface can be dynamically adjusted.
Further, the switching unit 4 includes a memory switch;
The memory switch is used for receiving the control instruction of the RFID unit 2 and changing the on-off state, and when the control instruction is not received, the switch keeps the on-off state unchanged until the programming control instruction is received again.
Further, the reactance unit 3 and the switching unit 4 are incorporated as a memory resistor, a memory capacitor or a memory inductance type device.
Specifically, the memory switch in this embodiment is a programmable switch, and the programmable switch has a power-off memory function, that is, the on-off state of the switch can be changed according to a received instruction when the reader-writer of the RFID unit 2 communicates with the tag, and the on-off state of the switch remains unchanged after the communication is finished, so that the impedance regulation of the ultra-surface unit 1 is realized.
Correspondingly, referring to fig. 6, the invention also provides an intelligent super-surface device based on the RFID technology, which comprises a supporting structure and a plurality of super-surface units based on the RFID technology;
A plurality of super surface units based on RFID technology are arranged on a support structure.
Specifically, in this embodiment, a plurality of super-surface units based on the RFID technology are arranged on a supporting structure, and then the supporting structure is fixedly installed on an outer wall of a building, so that an effect of dynamically adjusting and controlling the direction and the intensity of the reflected electromagnetic wave beam is achieved under a low energy consumption condition.
Correspondingly, referring to fig. 7, the invention also provides an intelligent super-surface control method based on the RFID technology, which is applied to the super-surface based on the RFID technology, and comprises the following steps:
step S100, the RFID unit 2 establishes communication connection with external equipment;
Specifically, in this embodiment, the RFID unit 2 is mainly connected to an external device in a communication manner, and receives a control signal from the external device, so as to change the on-off state of the switch unit 4.
Step S200, receiving an adjusting signal of external equipment;
Specifically, in this embodiment, the RFID unit 2 receives an adjusting signal of an external device, and because the RFID unit 2 communicates with the external device in real time, when adjusting the beam direction of the electromagnetic wave reflected by the intelligent super surface, the external device can use deep learning or negative feedback to perform corresponding adjustment and control on the switch unit 4 in combination with the intelligent optimization algorithm.
Step S300, the RFID unit 2 generates a corresponding control signal according to the adjustment signal, and sends the control signal to the switch unit 4;
In step S400, the switching unit 4 connects or disconnects the super-surface unit 1 and the reactance unit 3 according to the control signal.
Specifically, in the present embodiment, the isolation and communication of the super surface unit 1 and the reactance unit 3 are achieved by the RFID unit 2 controlling the opening and closing of the switching unit 4. Because the connection between the super-surface unit 1 and the reactance unit 3 can change the phase of the electromagnetic wave reflected by the super-surface unit 1, the beam direction and the intensity of the electromagnetic wave reflected by the super-surface are changed, and the technical effect of wireless dynamic regulation and control of the reflected beam direction of the super-surface is realized.
Further, the external device may be carried by an unmanned aerial vehicle to communicate with the RFID unit 2 on the super surface of the building surface, and before the step of establishing a communication connection between the RFID unit 2 and the external device, the method further includes the following steps:
Writing a uniquely identifiable ID to each RFID unit;
Binding the ID with the position of the super-surface unit;
determining the reflected beam direction of the super surface according to the use requirement;
determining a target super-surface unit needing to change impedance according to the reflected beam direction;
and the external equipment moves to the communication distance of the RFID unit through the unmanned aerial vehicle, and establishes communication connection with the RFID unit correspondingly connected with the target super-surface unit through the ID of the RFID unit.
Specifically, because a plurality of subsurface units 1 are often used in cooperation during specific use, such as an intelligent subsurface device based on an RFID technology, in this embodiment, by writing a unique identifiable ID into each RFID unit 2 and binding the ID with the position of the subsurface unit 1, the position of each subsurface unit 1 can be determined by analyzing the ID; determining the reflected beam direction of the super-surface according to the use requirement, for example, the current reflected beam direction of the super-surface unit 1 is a first direction, and the reflected beam direction is required to be changed into a second direction at present; the required impedance of the super-surface unit 1 is calculated according to the direction of the target reflected beam, and as the direction of the reflected beam is synthesized by a plurality of super-surface units 1, not all the states of the super-surface units 1 need to be changed; thus determining the ID of the super surface unit 1, which needs to change the impedance, according to the target reflected beam direction, and then changing the impedance of the super surface unit 1 using an external device; when the impedance of the super-surface unit 1 is modified, communication connection is established between the external equipment carried by the unmanned aerial vehicle and the RFID unit 2, and then the isolation and communication between the super-surface unit 1 and the reactance unit 3 are controlled through the switch unit 4 by the control method, so that the technical effect of wireless dynamic regulation and control of the direction of the super-surface reflected beam is achieved.
Further, in the step of determining the target super-surface unit of which the impedance needs to be changed according to the reflected beam direction, the method further comprises the following steps:
Acquiring the current beam direction of the target super-surface unit, and judging whether the current beam direction is the same as the required direction;
if the current beam direction is different from the target reflected beam direction, determining the required impedance of the corresponding target super-surface unit by using an optimization algorithm according to the difference between the current beam direction and the target reflected beam direction;
calculating according to the required impedance to obtain the on-off state of each RFID unit connection switch unit;
The external equipment is communicated with the RFID unit and controls the on-off state of the switch unit;
And repeating the process of controlling the on-off state of the switch unit by using the communication equipment until the difference between the actual beam direction and the target reflected beam direction meets the required value.
Specifically, in this embodiment, mainly by comparing the difference between the current beam direction and the target reflected beam direction, an optimization algorithm is used according to the comparison difference to determine the ID of the RFID unit connected to the super surface unit to which the impedance needs to be modified, so that the super surface unit is connected to the RFID unit in a communication manner through an external device, and the on-off state of the switch unit is controlled; after the on-off state of the corresponding switch unit of the target super-surface unit is modified, detecting the difference between the current beam direction and the target reflected beam direction again, and circulating until the difference between the actual beam direction and the target reflected beam direction meets the requirement value.
It should be noted that, other contents of the intelligent super surface based on the RFID technology disclosed in the present invention may be referred to the prior art, and will not be described herein.
In addition, it should be noted that, if there is a directional indication (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.
In addition, it should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (9)
1. The intelligent super-surface control method based on the RFID technology is characterized by being applied to the intelligent super-surface based on the RFID technology and comprising the following steps of:
the RFID unit establishes communication connection with external equipment;
The RFID unit receives an adjusting signal of external equipment;
The RFID unit generates a corresponding control signal according to the adjusting signal and sends the control signal to the switch unit;
The switch unit is used for switching off or switching on the connection relation between the super-surface unit and the reactance unit according to the control signal;
The external device can be carried by an unmanned aerial vehicle to communicate with the RFID unit on the super surface of the building surface, and before the step of establishing communication connection between the RFID unit and the external device, the method further comprises the following steps:
Writing a uniquely identifiable ID to each RFID unit;
Binding the ID with the position of the super-surface unit;
determining the reflected beam direction of the super surface according to the use requirement;
determining a target super-surface unit needing to change impedance according to the reflected beam direction;
and the external equipment moves to the communication distance of the RFID unit through the unmanned aerial vehicle, and establishes communication connection with the RFID unit correspondingly connected with the target super-surface unit through the ID of the RFID unit.
2. An intelligent super-surface based on an RFID technology, which is applied to the intelligent super-surface control method based on the RFID technology as claimed in claim 1, and is characterized by comprising a super-surface unit, an RFID unit, a reactance unit and a switch unit;
One end of the super-surface unit is connected with the first end of the switch unit, the second end of the switch unit is connected with one end of the reactance unit, and the controlled end of the switch unit is connected with the RFID unit;
the RFID unit is used for receiving an external control signal to change the on-off state of the switch unit.
3. The intelligent subsurface based on RFID technology according to claim 2, further comprising a support substrate, wherein the subsurface unit, RFID unit, reactance unit, and switch unit are all disposed on the support substrate.
4. The intelligent subsurface based on RFID technology according to claim 2, wherein the RFID unit comprises an RFID chip and an antenna, the antenna being connected to the RFID chip;
The antenna is used for being in communication connection with external equipment;
the control end of the RFID chip is connected with the controlled end of the switch unit.
5. The intelligent subsurface based on RFID technology as claimed in claim 4, wherein the antenna is the subsurface unit.
6. The intelligent subsurface based on RFID technology as claimed in claim 2, wherein,
The reactance unit is a capacitive or inductive device.
7. The intelligent subsurface based on RFID technology according to claim 2, wherein the switch unit comprises a memory switch;
The memory switch is used for receiving the control signal of the RFID unit and keeping the corresponding on-off state.
8. The intelligent subsurface based on RFID technology according to claim 3, wherein the subsurface unit and the RFID unit are etched or printed on the support substrate.
9. An intelligent subsurface device based on RFID technology, characterized by comprising a support structure and a number of intelligent subsurface devices based on RFID technology as claimed in any one of claims 2-8;
The supporting structure is used for being attached to the surface of a building wall;
and the intelligent super-surfaces based on the RFID technology are arranged on the supporting structure.
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865402B1 (en) * | 2000-05-02 | 2005-03-08 | Bae Systems Information And Electronic Systems Integration Inc | Method and apparatus for using RF-activated MEMS switching element |
| CN101038618A (en) * | 2006-12-01 | 2007-09-19 | 华南理工大学 | Intelligent antenna system of RFID reading machine |
| CN102752996A (en) * | 2011-04-20 | 2012-10-24 | 深圳光启高等理工研究院 | Wave absorbing device with adjustable frequency |
| KR20120134817A (en) * | 2011-06-03 | 2012-12-12 | 주식회사 이엠따블유 | Metamaterial antenna |
| CN102918706A (en) * | 2010-02-26 | 2013-02-06 | 德卡产品有限公司 | RFID system with an eddy current trap |
| CN104485520A (en) * | 2014-12-26 | 2015-04-01 | 西北工业大学 | Beam scanning array antenna having ultralow elevation characteristic |
| CN105787537A (en) * | 2016-04-27 | 2016-07-20 | 广东溢达纺织有限公司 | Unmanned machine feeding system and feeding method thereof |
| CA2940467A1 (en) * | 2016-08-30 | 2016-11-16 | Mostafa M. A. Awheda | Smart rfid electrical unit system |
| CN106159435A (en) * | 2015-04-15 | 2016-11-23 | 北方工业大学 | Ultra-wideband fractal antenna |
| KR20180076359A (en) * | 2016-12-27 | 2018-07-05 | 한국과학기술원 | Active meta-material structure capable of selecting charging frequency for a plurality of electric devices, and wireless power transfer system using the same |
| CN110033073A (en) * | 2019-04-15 | 2019-07-19 | 西安电子科技大学 | Radio frequency energy based on Meta Materials collects RFID tag system |
| CN110336575A (en) * | 2019-06-19 | 2019-10-15 | 东南大学 | A kind of super surface intelligent processing system of information applied to cell base station wireless communication |
| CN110729821A (en) * | 2019-10-12 | 2020-01-24 | 西安电子科技大学 | Quasi-diffraction-free beam forming method for multi-target wireless energy transmission |
| CN111398916A (en) * | 2020-04-07 | 2020-07-10 | 湖南赛博诺格电子科技有限公司 | Radar interference method based on digital coding super-surface rapid phase regulation |
| CN112910807A (en) * | 2021-02-04 | 2021-06-04 | 华中科技大学 | Intelligent super-surface channel estimation method and system based on space random sampling |
-
2021
- 2021-11-02 CN CN202111291351.9A patent/CN114168014B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865402B1 (en) * | 2000-05-02 | 2005-03-08 | Bae Systems Information And Electronic Systems Integration Inc | Method and apparatus for using RF-activated MEMS switching element |
| CN101038618A (en) * | 2006-12-01 | 2007-09-19 | 华南理工大学 | Intelligent antenna system of RFID reading machine |
| CN102918706A (en) * | 2010-02-26 | 2013-02-06 | 德卡产品有限公司 | RFID system with an eddy current trap |
| CN102752996A (en) * | 2011-04-20 | 2012-10-24 | 深圳光启高等理工研究院 | Wave absorbing device with adjustable frequency |
| KR20120134817A (en) * | 2011-06-03 | 2012-12-12 | 주식회사 이엠따블유 | Metamaterial antenna |
| CN104485520A (en) * | 2014-12-26 | 2015-04-01 | 西北工业大学 | Beam scanning array antenna having ultralow elevation characteristic |
| CN106159435A (en) * | 2015-04-15 | 2016-11-23 | 北方工业大学 | Ultra-wideband fractal antenna |
| CN105787537A (en) * | 2016-04-27 | 2016-07-20 | 广东溢达纺织有限公司 | Unmanned machine feeding system and feeding method thereof |
| CA2940467A1 (en) * | 2016-08-30 | 2016-11-16 | Mostafa M. A. Awheda | Smart rfid electrical unit system |
| KR20180076359A (en) * | 2016-12-27 | 2018-07-05 | 한국과학기술원 | Active meta-material structure capable of selecting charging frequency for a plurality of electric devices, and wireless power transfer system using the same |
| CN110033073A (en) * | 2019-04-15 | 2019-07-19 | 西安电子科技大学 | Radio frequency energy based on Meta Materials collects RFID tag system |
| CN110336575A (en) * | 2019-06-19 | 2019-10-15 | 东南大学 | A kind of super surface intelligent processing system of information applied to cell base station wireless communication |
| CN110729821A (en) * | 2019-10-12 | 2020-01-24 | 西安电子科技大学 | Quasi-diffraction-free beam forming method for multi-target wireless energy transmission |
| CN111398916A (en) * | 2020-04-07 | 2020-07-10 | 湖南赛博诺格电子科技有限公司 | Radar interference method based on digital coding super-surface rapid phase regulation |
| CN112910807A (en) * | 2021-02-04 | 2021-06-04 | 华中科技大学 | Intelligent super-surface channel estimation method and system based on space random sampling |
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| Publication number | Publication date |
|---|---|
| CN114168014A (en) | 2022-03-11 |
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