CN115017929B - Electrochromic device driving system and method - Google Patents

Electrochromic device driving system and method Download PDF

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Publication number
CN115017929B
CN115017929B CN202210640267.1A CN202210640267A CN115017929B CN 115017929 B CN115017929 B CN 115017929B CN 202210640267 A CN202210640267 A CN 202210640267A CN 115017929 B CN115017929 B CN 115017929B
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reader
writer
electronic tag
driving
instruction
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CN115017929A (en
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张宇模
闫妍
林婷婷
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Jilin University
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Jilin University
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on an electrochromic effect
    • G02F1/153—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10376—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable
    • G06K7/10386—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being adapted for being moveable the interrogation device being of the portable or hand-handheld type, e.g. incorporated in ubiquitous hand-held devices such as PDA or mobile phone, or in the form of a portable dedicated RFID reader
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
    • G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Nonlinear Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Near-Field Transmission Systems (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)

Abstract

The invention provides a driving system and a driving method of an electrochromic device, wherein the system comprises the electrochromic device, a transmitting device and a driving device, the electrochromic device is electrically connected with the driving device, the transmitting device is in communication connection with the driving device, the transmitting device comprises a reader-writer, the driving device comprises an RFID electronic tag and a signal conditioning circuit, the RFID electronic tag is used for driving the electrochromic device, the RFID electronic tag is matched with the reader-writer, and the signal conditioning circuit is electrically connected with the driving device and used for remotely controlling the electrochromic device.

Description

Electrochromic device driving system and method
Technical Field
The invention relates to the technical field of electrochromic devices, in particular to a driving system and a driving method of an electrochromic device.
Background
Electrochromic refers to a phenomenon that the optical properties of a material change steadily and reversibly under the action of an applied electric field, and visually represents a reversible change in color or transparency. The material with electrochromic property is called electrochromic material, has the advantages of friendly vision, low power consumption and the like, and has wide application in the fields of intelligent windows, anti-glare rearview mirrors and the like. The device made of the electrochromic material has the characteristics of low power consumption and the like, but when the device is used, the problems generally exist, the existing driving circuit of the electrochromic device is large in size and needs to be powered by an external power supply wire, the arrangement distance of the electrochromic device is limited by the length of the wire, the arrangement space of the electrochromic device is limited by the size of the driving circuit, and therefore the application scene of the electrochromic device is limited.
Disclosure of Invention
The problem addressed by the present invention is how to improve the driving circuit of an electrochromic device to reduce space and distance constraints.
In order to solve the problems, the invention provides an electrochromic device driving system, which comprises an electrochromic device, a transmitting device and a driving device, wherein the electrochromic device is electrically connected with the driving device, the transmitting device is in communication connection with the driving device, the transmitting device comprises a reader-writer, the driving device comprises an RFID electronic tag and a signal conditioning circuit, the RFID electronic tag is matched with the reader-writer, and the signal conditioning circuit is electrically connected with the driving device.
Optionally, the reader comprises a reader antenna, a radio frequency interface module and a logic control module, wherein the radio frequency interface module comprises a transmitter and a radio frequency receiver, the reader antenna is used for communicating with the RFID electronic tag, and the radio frequency interface module is used for processing the instruction sent by the logic control module.
Optionally, the logic control module includes a microcontroller, a storage unit and an application interface driving circuit, where the microcontroller is used to encode and decode signals sent or received by the reader-writer and encrypt and decrypt data, and the application interface driving circuit is used to perform input or output communication with the upper computer.
Optionally, the RFID electronic tag includes a tag antenna and a radio frequency chip, where the tag antenna includes one of a UHF RFID bent dipole antenna and an electrical loop antenna, and is configured to communicate with the reader, and the radio frequency chip is configured to modulate and demodulate a signal; the signal conditioning circuit is used for converting a driving signal generated by the radio frequency chip into a driving voltage matched with the electrochromic device.
Compared with the prior art, the RFID electronic tag is driven by the signal conditioning circuit to realize the combination of the electronic tag and the electrochromic device, the non-contact transmission of energy is realized by the RFID technology, and a longer communication range compared with a wire is obtained; because the electronic tag has lower energy consumption, the volume of the driving circuit is smaller.
In another aspect, the present invention provides a wireless driving method for an electrochromic device based on a reader, which is applied to the driving system for an electrochromic device as described above, and the wireless driving method for an electrochromic device based on a reader includes: the method comprises the steps that a reader-writer receives a first instruction sent by a computer network system, and after processing and judging, the reader-writer modulates the first instruction to a carrier signal to obtain a first control instruction; transmitting the first control instruction to an electronic tag through the reader-writer; receiving a modulation signal reflected by the electronic tag through the reader-writer, and obtaining identity information based on the modulation signal; the identity information is sent to the computer network system through the reader-writer to obtain a second instruction sent by the computer network system, and the second instruction is modulated onto a carrier signal to obtain a second control instruction after being processed and judged through the logic control unit, wherein the second instruction is an electric signal; and transmitting the second control instruction to the electronic tag through the reader-writer so as to control the electrochromic device through the electronic tag.
Optionally, the transmitting, by the reader/writer, the second control instruction to the electronic tag to control the electrochromic device by the electronic tag includes:
selecting a corresponding electronic tag according to the identity information; and transmitting the second control instruction to the selected electronic tag through the reader-writer.
Optionally, the sending, by the reader/writer, the identity information to the computer network system, and obtaining the second instruction sent by the computer network system includes:
After the identity information is identified by the logic operation module of the computer network system, the identity information is stored, and the content of the second instruction is determined according to the identity information, wherein the second instruction comprises a driving instruction, and the driving instruction comprises driving voltage and driving time for controlling the electronic tag to generate.
Optionally, the second instruction further includes:
And the stopping instruction comprises a stopping instruction for controlling the electronic tag to stop generating the driving voltage and controlling the reader to stop transmitting the instruction outwards.
Compared with the prior art, the method and the device have the advantages that the reader-writer transmits the first control instruction, after the reflection information of the electronic tag is recovered, the identity information is confirmed, and then the computer transmits the second instruction to perform wireless communication on the electronic tag, so that the electrochromic device can be accurately identified and controlled in a communication range, the computer can drive the electrochromic device in a wireless mode through the RFID technology, wire connection is not needed, and the control range is enlarged.
On the other hand, the invention also provides an electrochromic device wireless driving method based on the electronic tag, which is applied to the electrochromic device driving system, and comprises the following steps:
After the electronic tag enters the communication range of the reader-writer, receiving a first control instruction sent by the reader-writer through the electronic tag;
Transmitting the identity information of the electronic tag to the reader-writer through the electronic tag; receiving a second control instruction from the reader-writer through the electronic tag; and decoding the second control instruction through the electronic tag to obtain instruction content so as to drive the electrochromic device to change color or stop driving the electrochromic device.
Optionally, decoding the second control instruction by the electronic tag to obtain instruction content, so as to drive the electrochromic device to change color or stop driving the electrochromic device includes:
Determining whether the electronic tag needs to generate a driving signal or not according to the instruction content; if a driving signal is required to be generated, judging whether the driving voltage of the driving signal exceeds a preset voltage threshold value; if the driving voltage exceeds the preset voltage threshold, controlling a signal conditioning circuit to drive the electrochromic device; and if the driving voltage does not exceed the preset voltage threshold value, driving the electrochromic device according to the instruction content.
The beneficial effects of the wireless driving method of the electrochromic device based on the electronic tag compared with the prior art are basically the same as those of the electrochromic device based on the reader-writer, and are not repeated here.
Drawings
FIG. 1 is a block diagram of an electrochromic device driving system in accordance with an embodiment of the present invention;
Fig. 2 is a flowchart of a wireless driving method of an electrochromic device based on a reader according to an embodiment of the present invention;
FIG. 3 is a flow chart of steps of a method for wireless driving of an electrochromic device based on a reader in accordance with an embodiment of the present invention;
fig. 4 is a flowchart of steps of a wireless driving method of an electrochromic device based on an electronic tag according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. While the invention is susceptible of embodiment in the drawings, it is to be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the invention. It should be understood that the drawings and embodiments of the invention are for illustration purposes only and are not intended to limit the scope of the present invention.
It should be understood that the various steps recited in the method embodiments of the present invention may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the invention is not limited in this respect.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "alternative embodiments". Related definitions of other terms will be given in the description below. It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between different devices, modules, or units and not for limiting the order or interdependence of the functions performed by such devices, modules, or units.
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those skilled in the art will appreciate that "one or more" is intended to be construed as "one or more" unless the context clearly indicates otherwise.
As shown in fig. 1, an embodiment of the present invention provides an electrochromic device driving system, including an electrochromic device, a transmitting device and a driving device, where the electrochromic device is electrically connected with the driving device, the transmitting device is communicatively connected with the driving device, the transmitting device includes a reader, and the driving device includes an RFID electronic tag and a signal conditioning circuit, which are used for driving the electrochromic device, the RFID electronic tag is matched with the reader, and the signal conditioning circuit is electrically connected with the driving device.
RFID (Radio Frequency Identification), radio frequency identification technology, which is one of automatic identification technologies, performs non-contact bidirectional data communication in a wireless radio frequency mode, and reads and writes a recording medium (an electronic tag or a radio frequency card) in a wireless radio frequency mode, thereby achieving the purposes of identification and data exchange.
Alternatively, in embodiments of the present invention, ultra high frequency radio frequency identification technology (UHF RFID) wireless driven electrochromic devices are used.
The transmitting device may be classified into a reader-writer and a communication system.
In one embodiment, the reader-writer is an RFID reader-writer, and the object entering the identification area can be identified without manual intervention by automatically identifying the target object and acquiring the related data through the radio frequency identification signal. Through the RFID reader-writer, a plurality of RFID tags can be identified simultaneously, and the operation is quicker and more convenient. The RFID reader-writer performs wireless communication with the RFID electronic tag through the communication module of the RFID reader-writer, and can realize reading or writing operation of the tag identification code and the memory data.
Optionally, the RFID reader may be a fixed reader, fixed at a preset position in the application scenario. The RFID reader-writer can also be a handheld reader-writer, and controls an electrochromic device to be driven by taking a user as a center.
For the transmitting device, the transmitting instruction can be adjusted according to the characteristics of the electrochromic devices, and the magnetic field transmitting power and the magnetic field transmitting time are changed, so that the state switching of the electrochromic devices is controlled, and a plurality of electrochromic devices can be controlled simultaneously.
The driving device can be divided into an RFID electronic tag and a signal conditioning circuit.
The signal conditioning circuit is particularly used for driving the electrochromic device and is used for converting a driving signal into a driving voltage matched with the electrochromic device so as to realize optimal color change of the electrochromic device.
Through the mutual cooperation of the RFID reader-writer and the RFID electronic tag, the remote control of the electrochromic device can be realized through the wireless transmission of the RFID technology, the restriction of the length of a wire is avoided, and the volume and the power consumption of a circuit are reduced.
For the driving device, data and energy can be exchanged with the emitting device, the output voltage is adjusted according to the property of the electrochromic device, and the direction of the output voltage is adjusted according to the instruction of the emitting device so as to meet the state switching of the electrochromic device.
Optionally, in the electrochromic device driving system, there are a plurality of the electrochromic devices.
An RFID reader-writer in the transmitting device transmits electromagnetic signals to communicate with the RFID in the driving device, after the identity is confirmed, the RFID reader-writer takes the electromagnetic signals as a carrier to transmit control signals, after the RFID electronic tag receives the signals, the signals are demodulated by a chip and then converted into driving voltages by a signal conditioning circuit, so that the electrochromic device is driven to change the color. In the scheme, the RFID technology is used for controlling, so that one reader can simultaneously establish communication with a plurality of RFID electronic tags in the system, and a plurality of electrochromic devices are controlled.
Optionally, the reader comprises a reader antenna, a radio frequency interface module and a logic control module, wherein the radio frequency interface module comprises a transmitter and a radio frequency receiver, the reader antenna is used for communicating with the RFID electronic tag, and the radio frequency interface module is used for processing the instruction sent by the logic control module.
The reader-writer antenna is used for receiving and transmitting electromagnetic signals, wherein the receiving of the electromagnetic signals comprises receiving radio frequency carrier signals transmitted from the RFID electronic tag and converting the radio frequency carrier signals into electric signals; transmitting the electromagnetic signal includes converting a current signal in the reader-writer into a radio frequency carrier signal and transmitting to the RFID electronic tag.
The radio frequency interface module includes a transmitter and a receiver. The radio frequency interface module is the radio frequency front end of the RFID reader-writer and is also the key for influencing the efficiency of the RFID reader-writer, and is mainly responsible for transmitting and receiving radio frequency signals. The transmitter comprises a modulation circuit which is used for modulating electromagnetic signals required to be sent to the RFID electronic tag and then sending the electromagnetic signals through a reader antenna; the receiver includes a demodulation circuit that is responsible for demodulating and amplifying the electromagnetic signal from the RFID electronic tag.
Optionally, the radio frequency interface module further comprises a clock generator, and the clock generator is responsible for generating a normal working clock of the system.
Optionally, the logic control module includes a microcontroller, a storage unit and an application interface driving circuit, where the microcontroller is used to encode and decode signals sent or received by the reader-writer and encrypt and decrypt data, and the application interface driving circuit is used to perform input or output communication with the upper computer.
The logic control module is a control module of the reader, and when the reader works, the logic control module sends out instructions to control the radio frequency interface module to make different operations. An anti-collision algorithm is also executed to prevent collision between data which occurs when a plurality of RFID electronic tags transmit signals to the reader-writer at the same time. Specifically, the logic control module includes a microcontroller, an interface drive circuit, and a memory unit.
Optionally, the RFID electronic tag includes a tag antenna and a radio frequency chip, where the tag antenna includes one of a UHF RFID bent dipole antenna and an electrical loop antenna, and is configured to communicate with the reader, and the radio frequency chip is configured to modulate and demodulate a signal;
the signal conditioning circuit is used for converting a driving signal generated by the radio frequency chip into a driving voltage matched with the electrochromic device.
The tag antenna is responsible for transmitting and receiving electromagnetic waves, is used for receiving electromagnetic signals transmitted by the RFID reader-writer and is also used for transmitting data required by the RFID reader-writer to the reader-writer. The antenna matching circuit is used for impedance matching of the antenna, and energy transmission with maximum efficiency is achieved.
The radio frequency chip is responsible for decoding, judging and processing electromagnetic signals transmitted by the RFID reader-writer and comprises a modem, a voltage regulator and a clock transmitter. The modulator modulates the data transmitted by the control unit into radio frequency signals, and then loads the radio frequency signals onto the antenna for being transmitted back to the RFID reader-writer by the antenna. The demodulator demodulates the modulated signal and removes the carrier wave to obtain the original modulated signal. The voltage regulator is used for converting radio frequency signals received from the RFID reader-writer into Direct Current (DC), storing energy through an internal energy storage device, and ensuring stable power supply through the voltage stabilizing circuit.
The radio frequency chip also comprises a storage unit, wherein the storage unit is mainly used for storing data or identification data generated during the operation of the system.
In an embodiment, the RFID electronic tag is a passive RFID tag, so that power supply to the RFID electronic tag and the driving device is not required, when the driving device enters the communication range of the RFID reader, an electromagnetic signal sent by the RFID reader is received by the passive RFID tag, wherein a part of radio frequency signals received by the RFID electronic tag generate induced current to supply energy to the RFID electronic tag, and a part of energy signals are modulated by data information stored in the RFID electronic tag and then carry own identity information to be reflected back to the reader.
In another embodiment, the RFID electronic tag is an active/semi-active RFID tag, and the driving device further includes a power management module for supplying power to a microcontroller or other external modules in the RFID electronic tag, so as to implement multifunctional application of the tag. The active RFID tag actively transmits radio frequency signals, and after entering the communication range of the RFID reader-writer, the active RFID tag transmits information to the RFID reader-writer.
The communication range comprises a range which can be transmitted by electromagnetic waves of the RFID reader-writer or a range which can be received by the RFID electronic tag.
On the other hand, as shown in fig. 2 and 3, an embodiment of the present invention provides a wireless driving method for an electrochromic device based on a reader, which is applied to the above electrochromic device driving system, and the wireless driving method for an electrochromic device based on a reader includes:
step S100, a reader receives a first instruction sent by a computer network system, and modulates the first instruction to a carrier signal to obtain a first control instruction after processing and judging by a logic control unit in the reader.
Step S200, transmitting the first control instruction to the electronic tag through the reader-writer.
In one embodiment, the communication system refers to a PC or other upper layer network system.
The PC or other upper network system sends the instruction to the reader-writer, the logic control unit of the reader-writer carries on logic processing to the instruction, judge whether this instruction needs to be launched, if yes, modulate the signal to the carrier signal, launch the instruction in the form of electromagnetic wave through the reader-writer antenna, used for finding the electronic label that can communicate; if not, waiting for the instruction.
In an embodiment, the first control instruction may not have instruction information for powering the passive electronic tag and for confirming the identity of the electronic tag with which it is in communication.
And step S300, receiving a modulation signal reflected by the electronic tag through the reader-writer, and obtaining identity information based on the modulation signal.
The antenna of the reader-writer receives the modulation signal reflected by the electronic tag, transmits the modulation signal to the radio frequency interface module through the antenna regulator, demodulates and decodes the modulation signal through the demodulation circuit in the receiver, and transmits effective identity information.
Step S400, transmitting the identity information to the computer network system through the reader-writer, obtaining a second instruction transmitted by the computer network system, and modulating the second instruction on a carrier signal to obtain a second control instruction after processing the judgment through the logic control unit, wherein the second instruction is an electrical signal.
And transmitting the effective identity information to a computer or a background host system for processing, identifying the identity of the tag by the host system according to logic operation, and then sending out a second control instruction according to the identity of the tag or a preset strategy.
Optionally, the second instruction further includes:
And the stopping instruction comprises a stopping instruction for controlling the electronic tag to stop generating the driving voltage and controlling the reader to stop transmitting the instruction outwards.
The step of sending the identity information to the computer network system through the reader-writer, and the step of obtaining the second instruction sent by the computer network system comprises the following steps:
After the identity information is identified by the logic operation module of the computer network system, the identity information is stored, and the content of the second instruction is determined according to the identity information, wherein the second instruction comprises a driving instruction, and the driving instruction comprises driving voltage and driving time for controlling the electronic tag to generate.
Through the second instruction, a series of control can be directly carried out on the reader-writer and the electronic tag.
And S500, transmitting the second control instruction to the electronic tag through the reader-writer so as to control the electrochromic device through the electronic tag.
The computer or the background host transmits a second instruction to the reader-writer, and the control instruction in the second instruction enables the radio frequency interface module in the reader-writer to modulate, converts the electric signal into a carrier signal, and then transmits the carrier signal through the antenna. After the electronic tag receives the signal, the chip in the electronic tag decodes the instruction, judges whether a driving signal is required to be generated, if so, generates the driving signal, drives the electrochromic device to change color, and realizes long-distance control on the electrochromic device; if not, continuing to wait for the instruction.
Optionally, the transmitting, by the reader/writer, the second control instruction to the electronic tag to control the electrochromic device by the electronic tag includes:
Selecting a corresponding electronic tag according to the identity information;
and transmitting the second control instruction to the selected electronic tag through the reader-writer.
In an embodiment, after receiving the signal of the electronic tag, a second instruction is transmitted through the host, where the second instruction is used to control the electronic tag that reflects the signal.
In other words, after the background host confirms the identity, the transmitted second instruction is only used for controlling the electronic tag, and identity confirmation and control are respectively carried out on different electronic tags in the communication range, so that the aim of simultaneously controlling a plurality of electronic tags is fulfilled, and meanwhile, data collision is prevented.
In one embodiment, the RFID reader-writer emits a magnetic field outwards, when the electronic tag enters the magnetic field range, the identity information in the storage unit is reflected and sent to the reader-writer, the reader-writer selects the tag after reading the information, and a driving instruction and energy are sent to the tag through an antenna of the reader-writer. After the tag senses energy, the tag is converted into a direct current signal through a rectification voltage stabilizer in the chip to work for each part of the tag, an operation instruction of a reader-writer is obtained through a modem in the chip, and a driving voltage signal is generated after judgment and processing through a logic control unit. The voltage of the induction output of the general passive tag is about 1.2V, if the voltage reaches the starting voltage of the electrochromic device, the signal conditioning circuit can be omitted, the electrochromic device is directly driven to change color, and if the voltage does not meet the starting voltage of the electrochromic device, the corresponding signal conditioning circuit needs to be designed.
Similarly, when the reader/writer transmits a stop driving instruction to the tag, the reader/writer stops transmitting the magnetic field to the outside, and the tag stops outputting the driving voltage. By adopting the method and the characteristics of a plurality of labels which can be read simultaneously by the UHF RFID reader, the state switching of a plurality of electrochromic devices can be controlled.
In a third aspect, as shown in fig. 2 and fig. 4, an embodiment of the present invention provides a wireless driving method for an electrochromic device based on an electronic tag, which is applied to an electrochromic device driving system as described above, and the wireless driving method for an electrochromic device based on an electronic tag includes:
Step S600, after the electronic tag enters the communication range of the reader-writer, the electronic tag receives a first control instruction sent by the reader-writer.
When the electronic tag is a passive RFID tag, the electronic tag receives a first control instruction sent by the reader-writer. Because the instruction is transmitted in the form of electromagnetic wave, the electronic tag has energy, when the electronic tag receives the first control instruction, a part of electromagnetic wave is rectified into direct current power by the voltage regulator to supply the circuit in the electronic tag to work, and the electronic tag is activated. At this time, after the other part of energy signals are modulated by the data information stored in the electronic tag, the unique identity information carried by the energy signals is reflected back to the reader-writer, so that the reader-writer can be used for identifying the identity of the electronic tag.
When the electronic tag is an active RFID tag, the electronic tag actively transmits radio frequency signals, and after entering the communication range of the reader-writer, the electronic tag and the reader-writer communicate.
And step S700, transmitting the identity information of the electronic tag to the reader-writer through the electronic tag.
And reflecting the unique identity information of the reader-writer back to the reader-writer through the tag antenna.
Step S800, receiving, by the electronic tag, a second control instruction from the reader-writer.
After the reader-writer confirms the identity information, the background host machine sends out a second instruction to control the reader-writer to emit a second control instruction, and the second control instruction is transmitted to the electronic tag through electromagnetic waves.
And step S900, decoding the second control instruction through the electronic tag to obtain instruction content so as to drive the electrochromic device to change color or stop driving the electrochromic device.
Optionally, step S900 includes:
determining whether the electronic tag needs to generate a driving signal or not according to the instruction content;
if a driving signal is required to be generated, judging whether the driving voltage of the driving signal exceeds a preset voltage threshold value;
If the driving voltage exceeds the preset voltage threshold, controlling a signal conditioning circuit to drive the electrochromic device;
and if the driving voltage does not exceed the preset voltage threshold value, driving the electrochromic device according to the instruction content.
The tag antenna receives a second control instruction, demodulates and decodes the second control instruction through the modem to obtain instruction content, judges whether a driving signal is required to be generated, and if so, generates the driving signal to drive the electrochromic device; if not, waiting for the reader to send the instruction.
A further embodiment of the present invention provides a computer readable storage medium applied to an electrochromic device driving system including the above, the storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described reader-writer-based electrochromic device wireless driving method and the above-described electronic tag-based electrochromic device wireless driving method.
Compared with the prior art, the computer readable storage medium has the beneficial effects that the computer readable storage medium is the same as the electrochromic device driving system, the electrochromic device wireless driving method based on the reader-writer and the electrochromic device wireless driving method based on the electronic tag, and the description is omitted here.
An electronic device that can be a server or a client of the present invention will now be described, which is an example of a hardware device that can be applied to aspects of the present invention. Electronic devices are intended to represent various forms of digital electronic computer devices, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
The electronic device includes a computing unit that can perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) or a computer program loaded from a storage unit into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the device may also be stored. The computing unit, ROM and RAM are connected to each other by a bus. An input/output (I/O) interface is also connected to the bus.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), or the like. In the present application, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present application. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims (6)

1. The wireless driving method of the electrochromic device based on the reader-writer is characterized by being applied to a driving system of the electrochromic device and comprising the electrochromic device, a transmitting device and a driving device, wherein the electrochromic device is electrically connected with the driving device, the transmitting device is in communication connection with the driving device, the transmitting device comprises a reader-writer, the driving device comprises an RFID electronic tag and a signal conditioning circuit, the RFID electronic tag is used for driving the electrochromic device, the RFID electronic tag is matched with the reader-writer, and the signal conditioning circuit is electrically connected with the driving device;
The wireless driving method of the electrochromic device based on the reader-writer comprises the following steps:
The method comprises the steps that a reader-writer receives a first instruction sent by a computer network system, and after processing and judging, the reader-writer modulates the first instruction to a carrier signal to obtain a first control instruction;
transmitting the first control instruction to an electronic tag through the reader-writer;
Receiving a modulation signal reflected by the electronic tag through the reader-writer, and obtaining identity information based on the modulation signal;
Transmitting the identity information to the computer network system through the reader-writer, obtaining a second instruction transmitted by the computer network system, including: after the identity information is identified by a logic operation module of the computer network system, the identity information is stored, and the content of the second instruction is determined according to the identity information, wherein the second instruction comprises a driving instruction and a stopping instruction, the driving instruction comprises a driving voltage and driving time for controlling the electronic tag to generate, the stopping instruction comprises a driving voltage for controlling the electronic tag to stop generating, and the reader-writer is controlled to stop transmitting the instruction outwards;
Modulating the second instruction on a carrier signal to obtain a second control instruction after processing and judging by the logic control unit, wherein the second instruction is an electric signal;
And transmitting the second control instruction to the electronic tag through the reader-writer so as to control the electrochromic device through the electronic tag.
2. The reader-writer based electrochromic device wireless driving method according to claim 1, wherein the reader-writer comprises a reader-writer antenna, a radio frequency interface module and a logic control module, the radio frequency interface module comprises a transmitter and a radio frequency receiver, wherein the reader-writer antenna is used for communicating with the RFID electronic tag, and the radio frequency interface module is used for processing instructions sent by the logic control module.
3. The method for wirelessly driving the electrochromic device based on the reader-writer according to claim 2, wherein the logic control module comprises a microcontroller, a storage unit and an application interface driving circuit, the microcontroller is used for encoding and decoding signals sent or received by the reader-writer and encrypting and decrypting data, and the application interface driving circuit is used for carrying out input or output communication with an upper computer.
4. A reader-based electrochromic device wireless driving method according to any one of claims 1-3, characterized in that the RFID electronic tag comprises a tag antenna comprising one of a UHF RFID bent dipole antenna and an electrical loop antenna for communicating with the reader-writer and a radio frequency chip for modulating and demodulating signals;
The signal conditioning circuit is used for converting a driving signal generated by the radio frequency chip into a driving voltage matched with the electrochromic device.
5. The reader/writer-based electrochromic device wireless driving method according to claim 1, wherein the transmitting, by the reader/writer, the second control instruction to the electronic tag to control an electrochromic device by the electronic tag includes:
Selecting a corresponding electronic tag according to the identity information;
and transmitting the second control instruction to the selected electronic tag through the reader-writer.
6. An electronic tag-based electrochromic device wireless driving system, characterized in that it is applied to the reader-writer-based electrochromic device wireless driving method as in any one of claims 1 to 5, and the electronic tag-based electrochromic device wireless driving system comprises:
After the electronic tag enters the communication range of the reader-writer, receiving a first control instruction sent by the reader-writer through the electronic tag;
transmitting the identity information of the electronic tag to the reader-writer through the electronic tag;
Receiving a second control instruction from the reader-writer through the electronic tag;
And decoding the second control instruction through the electronic tag to obtain instruction content so as to drive the electrochromic device to change color or stop driving the electrochromic device.
CN202210640267.1A 2022-06-08 2022-06-08 Electrochromic device driving system and method Active CN115017929B (en)

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CN102129580A (en) * 2011-01-18 2011-07-20 北京航空航天大学 Data communication method from label to reader-writer based on Miller codes
CN103649826A (en) * 2011-03-16 2014-03-19 唯景公司 Onboard controller for multistate windows
CN110095915A (en) * 2018-01-29 2019-08-06 菲尔齐费尔公司 For controlling the method and system of electrochromic film
CN113919377A (en) * 2021-10-29 2022-01-11 海信家电集团股份有限公司 Storage cabinet and article positioning system

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