WO2016095803A1 - Carte sans contact et procédé de communication et d'alimentation électrique associé - Google Patents

Carte sans contact et procédé de communication et d'alimentation électrique associé Download PDF

Info

Publication number
WO2016095803A1
WO2016095803A1 PCT/CN2015/097388 CN2015097388W WO2016095803A1 WO 2016095803 A1 WO2016095803 A1 WO 2016095803A1 CN 2015097388 W CN2015097388 W CN 2015097388W WO 2016095803 A1 WO2016095803 A1 WO 2016095803A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
bluetooth
circuit
power
voltage
Prior art date
Application number
PCT/CN2015/097388
Other languages
English (en)
Chinese (zh)
Inventor
丁励
Original Assignee
珠海艾派克微电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 珠海艾派克微电子有限公司 filed Critical 珠海艾派克微电子有限公司
Publication of WO2016095803A1 publication Critical patent/WO2016095803A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • 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
    • 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
    • G06K19/0701—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0707—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
    • 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
    • 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
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular, to a contactless card and a communication connection method thereof with the mobile terminal.
  • a traditional USB flash drive uses a standard USB interface
  • a mobile terminal such as a mobile phone often uses a mini USB or a micro USB interface. Since the interface and the transmission protocol do not correspond, the mobile terminal such as a mobile phone cannot conveniently read the U directly. Information on the disk. Mobile hard drives also have problems in that they cannot easily read information.
  • a mobile terminal such as a mobile phone can access a data source of the hard disk through its own Bluetooth module or WiFi module, and can also provide a large-capacity information source to a mobile terminal such as a mobile phone, but this needs to be given
  • the hard disk is equipped with a battery to provide sufficient electric power, and the hard disk volume of the battery is increased, which is not convenient to carry.
  • NFC Near Field Communication
  • NFC business card An electronic business card (NFC business card) using NFC technology.
  • these NFC business cards can print master information (such as names, positions, telephones, etc.) on both sides of the business card, and an NFC module is embedded inside the business card.
  • master information such as names, positions, telephones, etc.
  • NFC is a short-range high-frequency radio technology that operates at 13.56 megahertz (MHz) with a communication distance of typically 10 cm and a connection time of less than 1 second.
  • MHz 13.56 megahertz
  • its transmission speed is 106 kilobits (kbit) / sec, 212 kbit / sec or 424 kbit / sec.
  • NFC has passed ISO/IEC18092 international standard, EMCA-340 Standard and ETSI TS 102 190 standard.
  • NFC uses both active and passive read modes. Since the NFC is a point-to-point communication and the communication distance is short, the user can conveniently control the range of reading the NFC business card, and the information in the NFC business card is prevented from being acquired by others without consent, and has high security.
  • the existing NFC control chip has a capacity of only a few kilobytes (Kilobyte, KB) to several tens of kilobytes, and is only suitable for storing plain text information.
  • Kilobyte, KB kilobytes
  • multimedia technology people hope that NFC business cards can carry multimedia information such as pictures, sounds and even videos. Such NFC business cards can spread more information to other people and improve the attention of business card recipients.
  • the storage of multimedia information requires a larger storage capacity in units of megabytes (MB), although simply expanding the storage capacity of the NFC business card can solve the capacity problem, even with the current maximum transmission speed of 424 kbit.
  • the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art high-capacity non-contact card transmission speed, high cost, and large volume resulting in poor convenience.
  • the invention firstly provides a contactless card comprising: a Bluetooth antenna and a storage circuit; a coupling antenna for receiving an external modulated signal and/or a carrier signal; and a conversion circuit for modulating the signal received according to the coupled antenna And/or a carrier signal outputting a DC voltage; a data transceiver circuit configured to perform Bluetooth communication with the outside through the Bluetooth antenna; and a control circuit configured to perform data reading in the storage circuit according to Bluetooth communication of the data transceiver circuit or Writing; wherein the storage circuit, the data transceiver circuit, and the control circuit respectively input the DC voltage as respective working power source.
  • the data transceiver circuit is further configured to perform NFC communication with the outside through the coupling antenna; the control circuit is further configured to perform NFC communication with the outside through the coupling antenna according to the data transceiver circuit, in the storing Data is read or written in the circuit.
  • the data transceiver circuit comprises: a Bluetooth signal processing circuit for performing the Bluetooth communication with the outside through the Bluetooth antenna; and an NFC signal processing circuit for performing the NFC communication with the outside through the coupling antenna.
  • the data transceiving circuit is configured to reduce transmit power, reduce communication rate, or reduce receive sensitivity to reduce power consumption of the Bluetooth communication.
  • control circuit monitors the electric power received by the conversion circuit in real time, and configures the data transceiver circuit to perform the maximum communication distance or the transmission power of the Bluetooth communication according to the monitoring result.
  • the transmission power is configured to be no more than -1 dBm.
  • the transmission power is configured between -1 dBm and -99 dBm.
  • the RSSI value of any receiving point at a preset distance near the Bluetooth antenna is not more than -100 dBm.
  • the contactless card comprises: a power storage module for charging by using a DC voltage output by the conversion circuit, or independently supplying power to the data transceiver circuit and external communication together with the conversion circuit.
  • the accumulated power consumption of the storage circuit, the data transceiver circuit and the control circuit in a single communication cycle is not greater than the cumulative output power of the conversion circuit.
  • the present invention also provides a communication method for a contactless card, comprising: receiving an external modulated signal and/or a carrier signal; outputting a DC voltage according to the received modulated signal and/or carrier signal; using the DC voltage and externally Bluetooth communication; performing data reading or writing of the Bluetooth communication using the DC voltage.
  • the method further comprises: performing NFC communication with the outside using the DC voltage; and performing data reading or writing of the NFC communication by using the DC voltage.
  • performing Bluetooth communication with the outside using the DC voltage comprises: reducing transmission power, reducing communication rate, or reducing reception sensitivity to reduce power consumption of performing the Bluetooth communication.
  • the electric power of the output DC voltage is monitored in real time, and the Bluetooth communication is configured according to the monitoring result. Maximum communication distance or transmission power.
  • the transmission power of the Bluetooth communication with the outside is configured to be no more than -1 dBm.
  • the transmission power of the Bluetooth communication with the outside is configured between -1 dBm and -99 dBm.
  • the RSSI value of any receiving point at a preset distance near the transmitting source of the Bluetooth communication is not more than -100 dBm.
  • the present invention also provides a method for powering a contactless card, comprising: receiving an external modulated signal and/or a carrier signal; obtaining a DC voltage according to a modulated signal and/or a carrier signal received by the coupled antenna; The voltage is powered by Bluetooth communication with the outside; the DC voltage is used to supply power for data reading or writing corresponding to the Bluetooth communication.
  • the method further comprises: supplying power by the NFC communication with the outside using the DC voltage; and supplying power by reading or writing data corresponding to the NFC communication by using the DC voltage.
  • the DC voltage is used for powering Bluetooth communication with the outside, including: reducing transmission power, reducing communication rate, or reducing reception sensitivity to reduce power consumption of the Bluetooth communication.
  • the electric power of the DC voltage is monitored in real time, and the maximum communication distance or transmission power of the Bluetooth communication is configured according to the monitoring result.
  • the method comprises: charging the built-in power storage module with the DC voltage, and using the power storage module to supply power to the external communication independently or together with the DC voltage.
  • the present invention overcomes the shortcomings of the non-contact card transmission speed in the prior art, and can effectively utilize the capacity of the contactless card, so that the contactless card can store rich information at the same time. It can transmit information at high speed.
  • the non-contact card of the invention has low energy consumption, does not need to set the battery independently, improves the portability and security of the contactless card, and does not need to charge the non-contact card during the use of the user, thereby avoiding the contactless card being Carry the risk of running out or running out of power.
  • 1 to 7 are respectively schematic views showing the construction of various non-contact cards according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a communication connection between a contactless card and a mobile terminal in an application according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a communication method of a contactless card according to an embodiment of the present invention.
  • FIG. 10 is a schematic flow chart of a method for powering a contactless card according to an embodiment of the present invention.
  • the steps involved in the method of the embodiments of the invention illustrated in the drawings may be executed in a computer system such as a set of computer executable instructions.
  • a computer system such as a set of computer executable instructions.
  • the method of the embodiment of the present invention embodies a certain logical sequence of the technical solution of the present invention at the time of execution in the flowchart shown, in general, the logical sequence is limited to being illustrated by the flowchart.
  • the logical order of the technical solutions of the present invention may also be implemented in a manner different from that shown in the accompanying drawings.
  • the contactless card referred to in the present invention refers to a power supply that does not depend on a built-in battery or a power storage module, and does not need to be connected to a power supply through a wire, and only supplies power from a wireless RF signal from the power supply.
  • An electronic card that can work normally; of course, in order to work stably with a contactless card, on the basis of extracting electric energy from a wireless radio frequency signal, a battery or a storage capacitor is added to the non-contact card to assist the work. It should still fall within the scope of the contactless card of the present invention.
  • the contactless card of the embodiment of the present invention mainly includes a coupling antenna 11 , a conversion circuit 12 , a Bluetooth main control module 13 and a Bluetooth antenna 14 .
  • the coupling antenna 11 is for receiving an external modulated signal having a central oscillation frequency of a first frequency and/or an unmodulated carrier signal.
  • the conversion circuit 12 is connected to the coupling antenna 11 for rectifying and regulating the received modulated signal and/or carrier signal to output a DC voltage.
  • the Bluetooth master module 13 is connected to the Bluetooth antenna 14 and the conversion circuit 12, and uses the DC voltage output from the conversion circuit 12 as an operating power source.
  • the coupling antenna 11 in the present invention receives a modulation signal and/or a carrier signal whose center oscillation frequency is the first frequency, and includes a modulation signal and/or a carrier whose center oscillation frequency is close to the first frequency.
  • the signal, or the center oscillation frequency is a modulated signal and/or carrier signal near the first frequency.
  • the technical solution of the present invention is applicable to any frequency in a certain preset frequency range.
  • the first frequency may be 13.56 MHz, or may be a frequency range centered on 13.56 MHz.
  • the modulated signal refers to a signal that has been modulated and added with information to be transmitted.
  • the carrier signal refers to a signal that has not been modulated and does not contain information that needs to be transmitted.
  • the contactless card of the embodiment of the present invention can be implemented by means of a power supply acquisition circuit in the NFC module when applied.
  • the NFC communication system includes an NFC reader and a corresponding NFC tag.
  • the circuit structure in the NFC tag is described as an NFC module, and each of the NFC reader and the NFC tag includes a coupling antenna for communicating and transmitting power.
  • the coupling antenna 11 of the present embodiment has a coil for receiving an external modulated signal and/or an unmodulated carrier signal.
  • the external modulated signal and/or unmodulated carrier signal referred to herein refers to a modulated signal and/or an unmodulated carrier signal transmitted by the NFC reader/writer to the NFC tag, and the NFC reader/writer can be disposed on a fixed terminal. It can also be set on a mobile terminal such as a mobile phone.
  • the contactless card realized by the power supply acquisition circuit of the NFC module acquires electric energy from the NFC reader through the coupling antenna 11.
  • the carrier frequency of the NFC communication is 13.56 MHz
  • the center oscillation frequency of the coupled antenna 11 is close to 13.56 MHz. Due to the deviation of the system, the coupled antenna may also receive and process within a certain frequency range including 13.56 MHz (for example, the frequency is A modulated signal or carrier signal of 13.56 MHz plus or minus 10%).
  • the external modulation signal is generally sent by the above NFC reader/writer.
  • the NFC reader/writer is generally disposed on a mobile terminal such as a mobile phone.
  • the NFC reader periodically transmits a carrier signal or a modulated signal (ie, a card seek command or a search command) periodically (for example, every 0.5 seconds) to search for nearby NFC tags without continuously transmitting.
  • Carrier signal when the NFC reader/writer needs to transmit signals to the outside, the carrier signal is modulated, and the information to be transmitted is added to form a modulated signal.
  • the non-continuous transmission of the carrier signal is set from the viewpoint of energy saving, and thus the present invention does not exclude the case where the NFC reader continuously transmits the carrier signal.
  • the conversion circuit 12 converts the received AC signal into a DC voltage to provide operating power to other modules of the contactless card.
  • the conversion circuit 12 includes a rectifying portion and a voltage stabilizing portion, and the rectifying portion converts the alternating current voltage into a positive voltage having a large ripple voltage, which is generally implemented by a rectifier bridge.
  • the voltage regulator partially smoothes the ripple voltage, making the output voltage stable and gentle, ensuring the stability of the Bluetooth master module and the NFC module.
  • a conventional method is to use an LDO (Low Dropout Regulator) circuit as a voltage stabilizing unit.
  • LDO Low Dropout Regulator
  • the advantages of LDO are low noise and low quiescent current.
  • a DC/DC conversion circuit can also be used as the voltage stabilization unit.
  • the DC/DC conversion circuit is a type of switching power supply circuit. The advantage is that it is more efficient than the LDO, but the disadvantage is that the ripple noise is relatively large. Use DC/DC converter circuit to reduce voltage regulation Power loss.
  • the Bluetooth main control module in the embodiment of the present invention has a similar structural composition to the existing Bluetooth main control module, and mainly includes a link layer, a radio frequency signal processing unit (RF), and a storage unit (EEPROM, flash memory). , phase change memory, ferroelectric memory, ROM, ERPOM, MTP, etc.) and control unit (CPU and RAM).
  • RF radio frequency signal processing unit
  • EEPROM electrically erasable programmable read-only memory
  • flash memory phase change memory
  • ferroelectric memory ferroelectric memory
  • ROM read only memory
  • ERPOM Phase change memory
  • MTP magnetic tape
  • CPU and RAM control unit
  • the storage unit in the Bluetooth main control module can be integrated into the Bluetooth main control module, such as an embedded flash memory, or can be an external storage device, such as an external SD card.
  • the Bluetooth master module is mainly used to process and respond to signals received from the Bluetooth antenna.
  • the main difference between the Bluetooth main control module in the embodiment of the present invention and the existing Bluetooth main control module is that the Bluetooth main control module of the present invention uses the DC voltage outputted by the conversion circuit as the working power source.
  • the power supplied by the converter is small, so the Bluetooth main control module of the present invention and the conventional Bluetooth communication module (including the completeness of the Bluetooth antenna)
  • the Bluetooth device is different, and its overall power consumption should be smaller than that of the standard Bluetooth communication module.
  • the present invention can reduce the Bluetooth master by reducing the transmit power, reducing the communication rate, or reducing the receiving sensitivity.
  • the power consumption of the module can be reduced.
  • the Bluetooth master module of the present invention is configured such that the decibel value of the transmit power is no more than -1 dBm.
  • the effective communication distance is: 30m, 10m. , 7 meters and 3 meters.
  • the communication distance suitable for the application of the present invention is generally less than 1 meter. For example, when applied, the distance between the mobile terminal and the contactless card is only 10 cm or less.
  • Lfs is the transmission loss in dB; d is the transmission distance in km; f is the operating frequency, and the unit is calculated in MHz.
  • the wave propagation loss (also known as attenuation) in free space is only related to the operating frequency f and the propagation distance d.
  • the so-called free space propagation refers to the propagation of electric waves around an infinite vacuum around the antenna, which is an ideal propagation condition.
  • the radio wave communication distance is related to the transmission power, the receiving sensitivity, and the operating frequency. Assume that the non-contact of the present invention The communication distance between the card and the mobile terminal is 10 cm and the signal propagates in free space. According to the above formula, the transmission loss of the Bluetooth communication signal (carrier frequency: 2.4 GHz) can be calculated:
  • the transmission loss is a certain value
  • the higher the transmission power the farther the effective communication distance is. Therefore, considering the short-distance application environment of the contactless card of the present invention, reducing the transmission power is a way to reduce the power consumption of the Bluetooth main control module without causing communication interruption.
  • the receiving sensitivity of the Bluetooth communication module of the mobile terminal may be different, and the receiving sensitivity is high, the transmitting power of the Bluetooth main control module of the contactless card may be configured to be smaller.
  • the receiving sensitivity is relatively poor, it is necessary to increase the transmitting power of the Bluetooth master module to ensure that the Bluetooth communication is not interrupted. Therefore, the transmit power of the Bluetooth master module of the contactless card cannot be configured too small.
  • the Bluetooth main control module in the embodiment of the present invention has a transmit power configured to have a decibel value of less than 0 dBm and not more than -1 dBm, and may be configured to be configured between -1 dBm and -99 dBm (which may be equal to -1 dBm or -99dBm), for example -3dBm, -15dBm, -20dBm, -30dBm, -40dBm, -50dBm, -60dBm, -80dBm, even configured to be as low as -110dBm, so as to minimize the effective communication Energy consumption.
  • the receiving sensitivity of the Bluetooth communication module In order to improve the receiving sensitivity of the Bluetooth communication module, it is generally necessary to introduce a more complicated algorithm, or increase the number of stages or amplification of the signal amplifying circuit, etc., which will cause an increase in the circuit scale, thereby increasing the power consumption of the Bluetooth communication module. Therefore, by reducing the complexity of the algorithm, reducing the number of stages of the signal amplifying circuit or the amplification factor, the receiving sensitivity can be reduced, and the power consumption of the Bluetooth main control module can be reduced.
  • the storage unit of the Bluetooth main control module can store various information contained in the business card in a general sense, such as name, address, telephone, position, and website address.
  • various multimedia information such as icons, pictures, voices, music, animations, and videos can be stored. , as well as documents, software, etc., especially in the business application level of corporate profiles, product catalogs, promotional videos and other comprehensive media information content.
  • the storage unit of the present invention needs to store some or all of the multimedia information listed above, and therefore, it is necessary to use a memory larger than tens of bytes in the prior art, and preferably, the present invention
  • the storage unit is greater than or equal to 200 kilobytes (kilobyte) Memory, such as 256 kilobytes, 512 kilobytes, 1 Mbytes, 2 Mbytes, 4 Mbytes, etc., or larger capacity memory cells.
  • the application of the contactless card according to the present invention requires that various information can be stored in the storage unit in combination, for example, when the contactless card of the present invention is used as an electronic product, person, business, event or attraction.
  • the brochure you can store information about these items in the storage unit.
  • information on various dishes such as materials, tastes, prices, pictures, and eating methods can be stored in the storage unit.
  • the storage unit can store a richer content such as a greeting, a specific happy event, and the like than the existing paper material.
  • the storage unit generally stores basic attribute information about the Bluetooth master module, such as Bluetooth device name and address information.
  • the non-contact card of the present invention solves the power supply problem, thereby avoiding setting a battery or an external connection on the contactless card. Power supply.
  • the Bluetooth master module can be configured to have a transmit power decibel value of no more than -1 dBm.
  • the transmission power of the Bluetooth main control module is not More than -1dBm can satisfy both conditions at the same time.
  • an embodiment of the present invention further provides a contactless card including a coupling antenna 21 having a center oscillation frequency of 13.56 MHz, a conversion circuit 22, and a wireless communication module having a carrier frequency higher than 13.56 MHz. twenty three.
  • the coupling antenna 21 is for receiving an external modulated signal and/or an unmodulated carrier signal.
  • the conversion circuit 22 is connected to the coupling antenna 21 for rectifying and regulating the received modulated signal and/or the carrier signal to output a DC voltage.
  • the wireless communication module 23 is connected to the conversion circuit 22, and uses the DC voltage output from the conversion circuit 22 as an operating power source, and is configured to perform wireless communication using a carrier higher than 13.56 MHz.
  • the coupling antenna 21 has a coil for receiving an external modulated signal and/or an unmodulated carrier signal.
  • the contactless card obtains electrical energy from the NFC reader through the coupling antenna 21, and the carrier frequency of the NFC communication is 13.56 MHz, and the center oscillation frequency of the coupled antenna 21 should be close to this, due to system deviation, coupling
  • the antenna may also receive and process modulated or carrier signals with frequencies between plus or minus 10% of 13.56 MHz. Frequency of adoption
  • the communication system with 13.56 MHz as the carrier has an RFID (radio frequency identification) communication system, so the external modulated signal and carrier signal can also come from the RFID reader.
  • the coupled antenna can also be a 125 kHz coupled antenna with a center oscillation frequency of 125 kHz, which is another carrier frequency used by RFID communication systems.
  • the conversion circuit 22 is connected to the coupling antenna 21 for rectifying and regulating the received modulated signal and the carrier signal to output a DC voltage.
  • the conversion circuit 22 converts the received AC signal into a DC voltage to provide operating power to other modules of the contactless card.
  • the conversion circuit 22 includes a rectifying portion and a voltage stabilizing portion, and the rectifying portion converts the alternating current voltage into a positive voltage having a large ripple voltage, and the voltage stabilizing portion smoothes the ripple voltage, so that the output voltage is stable and gentle.
  • the wireless communication module 23 uses the DC voltage output from the conversion circuit 22 as an operating power source.
  • the wireless communication module 23 is configured to communicate wirelessly using a carrier above 13.56 MHz.
  • the coupled antenna is a 125 kHz coupled antenna
  • the wireless communication module 23 is configured to communicate wirelessly using a carrier above 125 kHz.
  • the application of the contactless card according to the embodiment of the present invention that is, the communication distance is generally considered.
  • the transmission power of the wireless communication module can be reduced, thereby reducing the power consumption of the wireless communication module 23.
  • the receiving sensitivity is generally about -80 dBm, and the individual ultra-high sensitivity can reach -97 dBm. Therefore, under the assumption that the receiving sensitivity of the receiver of the mobile terminal is generally -80 dBm high sensitivity, the transmission power of the wireless communication module can be reduced as much as possible.
  • the transmit power is small enough to ensure that the communication is not interrupted.
  • the wireless communication module 23 is configured to use any carrier at a preset distance from the wireless communication module 23 when a carrier higher than 13.56 MHz is used to transmit a signal (with a contactless card as the center, the radius is preset)
  • the RSSI value of any point on the spherical surface of the distance is not more than -100 dBm.
  • the preset distance may be from 0.1 centimeters (cm) to 10 cm, or a distance closer than 0.1 cm, or a distance further than 10 cm, which may be set according to practical applications.
  • the wireless communication module 23 of the present invention can be a module for wireless communication using a carrier higher than 13.56 MHz, such as a Bluetooth communication module, a Zigbee communication module or a WiFi communication module, and the communication speed is higher than the existing NFC communication speed, so it can be overcome The disadvantage of the slow communication speed of the contactless card in the prior art.
  • ZigBee is a low-power wireless connection technology based on IEEE802.15.4 standard, and can work in three frequency bands of 2.4 GHz (global popular), 868 MHz (popular in Europe) and 915 MHz (popular in the US); WiFi communication
  • the module is a Wireless Fidelity communication device based on the IEEE 802.11 family of standards.
  • the wireless communication module 23 includes a composition included in a conventional wireless communication module such as a communication antenna, a storage unit, and a main control unit.
  • the main control unit receives a modulated signal with a carrier frequency higher than 13.56 MHz and a transmission modulation through the communication antenna.
  • the signal, the main control unit demodulates and processes the modulated signal, and modulates the data that needs to be sent out as needed.
  • the storage unit of the wireless communication module 23 can store information contained in a business card in a general sense, such as a name, an address, a phone, a job, a website address, and the like. Further, since the contactless card of the present invention is a large-capacity card, In addition to these simple text messages, you can also store various multimedia information such as icons, pictures, voices, music, animations and videos, as well as documents, software, etc., especially in the business application level of corporate profiles, product catalogs, promotional videos, etc. The content of multiple media information. The application of the contactless card according to the present invention requires that various information can be stored in the storage unit in combination, for example, when the contactless card of the present invention is used as an electronic product, person, business, event or attraction.
  • the storage unit typically stores basic attribute information about the wireless communication module 23, such as device name and address information.
  • the storage unit of the wireless communication module needs to store some or all of the multimedia information listed above, and therefore, it is necessary to use a memory larger than tens of bytes in the prior art, and preferably, the present invention
  • the storage unit of the wireless communication module is a memory larger than or equal to 200 kilobytes, for example, 256 kilobytes, 512 kilobytes, 1 Mbytes, 2 Mbytes, and 4 Mbytes, or a larger capacity. Storage unit.
  • the contactless card of the embodiment of the present invention mainly includes an NFC module and a Bluetooth communication module.
  • the NFC module includes a 13.56 MHz coupled antenna 31 and a conversion circuit 32.
  • the Bluetooth communication module includes a Bluetooth main control module 34 and Bluetooth. Antenna 33.
  • the 13.56 MHz coupled antenna 31 is for receiving an external modulated signal and/or an unmodulated carrier signal.
  • a coupled antenna generally referred to by those skilled in the art has a coil.
  • the conversion circuit 32 is coupled to the 13.56 MHz coupled antenna 31 for receiving the modulated signal and/or carrier signal Line rectification and regulation, output DC voltage.
  • the conversion circuit converts the received AC voltage to a DC voltage to provide power to other modules of the contactless card.
  • the Bluetooth master module 34 is connected to the conversion circuit 32, and uses the DC voltage output from the conversion circuit 32 as the operating power source.
  • the Bluetooth master module 34 connected to the Bluetooth antenna 33, is used on the one hand to demodulate the modulated signal received from the Bluetooth antenna 33 and to modulate the data to be transmitted via the Bluetooth antenna 33.
  • data is read from its own internal memory or written into its own internal memory. That is, the internal memory in the Bluetooth master module 34 is used to store data for Bluetooth communication.
  • embodiments of the present invention may also add external memory 35 as shown in FIG. 3 to store data for Bluetooth communication in conjunction with internal memory in Bluetooth master module 34.
  • the external memory 35 is connected to the conversion circuit 32 and the Bluetooth main control module 34, and receives the DC voltage output from the conversion circuit 32 as an operating power source.
  • the internal memory of the Bluetooth master module 34, together with the external memory 35 may be collectively referred to as a memory for storing data for Bluetooth communication by the Bluetooth master module 34.
  • a communication system using a frequency of 13.56 MHz as a carrier mainly includes an NFC communication system and an RFID (radio frequency identification) communication system, and the external modulation signal and carrier signal may be from an NFC reader or from an RFID. Reader.
  • the coupled antenna can also be a 125 kHz coupled antenna with a center oscillation frequency of 125 kHz, which is another carrier frequency used by RFID communication systems.
  • NFC modulated signal For an NFC modulated signal, it is generally a frame signal having a prescribed format. NFC communication uses low amplitude Amplitude Shift Keying (ASK) modulation, amplitude shift keying modulation and demodulation, which are well known to those skilled in the art. Since the carrier frequency of the NFC communication is 13.56 MHz, the center oscillation frequency of the coupled antenna should be close to this.
  • the external modulated signal is generally sent by an NFC reader.
  • the NFC reader is generally disposed on a mobile terminal, such as a mobile phone. When the NFC reader does not transmit the modulated signal to the NFC tag in its vicinity, in order to save power, the NFC reader will also periodically transmit the carrier signal or modulation signal periodically (for example, every 0.5 seconds). (ie, a card-seeking instruction or a search command) searches for nearby NFC tags.
  • the Bluetooth main control module of the contactless card in the embodiment of the present invention may further include a clock circuit connected to the Bluetooth antenna for detecting and extracting a clock signal from a modulated signal received by the Bluetooth antenna, and the clock signal may be used for Bluetooth communication.
  • the contactless card of the embodiment of the present invention may further include a clock processing circuit.
  • the clock processing circuit is coupled to a 13.56 MHz coupled antenna for detecting and extracting a clock signal from the received modulated signal.
  • an ETU Elementary Time Unit
  • the NFC module uses an external clock for signal sampling, it counts as a ETU by counting the signal period of 128 carrier signals on the carrier signal.
  • the NFC module can handle some of the operations it needs, these operations may not require a clock frequency as high as 13.56 MHz.
  • an internal relatively low frequency internal clock circuit can be used, which passes through the crystal oscillation. Generated by means of a programmable oscillator or the like. With the internal clock circuit, the modulated signal or the demodulated signal is sampled every time it is clocked to 9.44 microseconds (one ETU) without counting the carrier signal of 128 cycles.
  • the above-described clock processing circuit is not provided in the contactless card, but an internal clock circuit is provided to synchronize the clock.
  • the oscillation frequency of the internal clock circuit can be higher or lower than 13.56 MHz.
  • the memory can store information contained in a business card in a general sense, such as a name, an address, a phone number, a job title, a website address, etc.
  • information contained in a business card in a general sense, such as a name, an address, a phone number, a job title, a website address, etc.
  • the contactless card of the present invention is a large-capacity card, in addition to the simple text information, It can store other multimedia information such as icons, pictures, voices, music, animations and videos, especially the contents of comprehensive media information such as corporate profiles, product catalogs, promotional videos, etc. at commercial application level, as well as documents and software.
  • the application of the contactless card according to the present invention requires that various information can be stored in the storage circuit in combination, for example, when the contactless card of the present invention is used as an electronic product, person, business, event or attraction.
  • the storage circuit can also store the device name and address information of the Bluetooth communication module.
  • the storage unit of the wireless communication module of the present invention is a memory greater than or equal to 200 kilobytes, for example, 256 kilobytes, 512 kilobytes, 1 Mbytes, 2 Mbytes, and 4 Mbytes. , or a larger capacity storage unit.
  • the Bluetooth main control module generally includes a signal transceiving processing unit, a clock unit, a control unit, and the like, which are well known to those skilled in the art and will not be described herein.
  • the present invention can reduce the Bluetooth master by reducing the transmit power, reducing the communication rate, or reducing the receiving sensitivity.
  • the power consumption of the module can be reduced.
  • the Bluetooth communication modules commonly used in the prior art generally support a communication distance of about 10 meters, so the power consumption during operation is generally relatively large. If only the conversion portion of the 13.56 MHz module is used for power supply, there is a problem of insufficient power supply.
  • the transmission power consumption of the Bluetooth communication module includes the static power consumption of the internal circuit of the Bluetooth main control module and the transmission power when transmitting the signal, and the transmission power consumption is related to the transmission power.
  • the transmission power is mainly related to two factors, one of which is effective The distance of the signal, the farther the distance, the greater the required transmission power; the second is the communication rate, and the faster the communication rate, the larger the transmission power.
  • the Bluetooth communication module of the present invention preferably supports a Bluetooth communication module of BLE (Bluetooth Low Energy) 4.0.
  • the Bluetooth communication module of the present invention is an improved Bluetooth communication module that reduces the transmission power of the Bluetooth communication module by reducing the effective communication distance.
  • the maximum communication distance of the Bluetooth communication module can be limited to, for example, 0 to 10 cm. For example, 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 7 cm, 9 cm, etc. within 0.1 m.
  • the Bluetooth communication module adjusts its own transmission power to reduce the power consumption of the Bluetooth communication module, thereby reducing the power consumption of the entire contactless card.
  • the instantaneous transmit power of the Bluetooth master module is not greater than the output power of the conversion circuit.
  • the instantaneous transmission power consumption does not exceed (ie, is less than or equal to) the power output by the conversion circuit.
  • Reducing the effective communication distance is generally achieved by reducing the transmission power of the Bluetooth main control module, that is, reducing the driving current. Therefore, when it is desired that the transmission power consumption is as small as possible, the effective communication distance can be limited to a close distance, for example, within 1 cm. At this time, according to the conversion relationship between the effective communication distance and the transmission power (for example, the calculation formula of the free space propagation loss in the first embodiment), the transmission power may be reduced to a corresponding value. By adjusting the transmission power of the Bluetooth main control module, the driving current when the signal is transmitted is directly affected, and the driving current is reduced to the corresponding value according to the conversion relationship between the effective communication distance and the driving current.
  • the communication distance of the application of the present invention is generally less than 0.1 m, for example, 5 cm. Therefore, in order to save power, the decibel value of the transmission power of the Bluetooth main control module can be configured to be less than -1 dBm, and -1 dBm to -99 dBm can be selected, even As low as -110dBm.
  • the power consumption of the Bluetooth main control module during communication is phased. For example, within a set communication period of 6.25 ms, the first 1.25 ms is used to receive and transmit the modulated signal, the instantaneous current is the peak value, and after 1.25 ms, it is Bluetooth.
  • the main control module performs internal processing (including but not limited to demodulation, decryption, calculation, writing, and reading) on the received modulated signal, and sleeps after processing. At this time, the working current is relatively flat and the power consumption is relatively small. Especially when sleeping, the working current is static, only a few ⁇ A.
  • the Bluetooth master module In order to reduce the power consumption of the Bluetooth master module, one way is to extend the communication cycle, thereby reducing the average power. For example, the communication cycle is adjusted to 12.5 ms. Thus, since the time taken to receive and transmit the modulated signal with high power consumption is not changed, and the sleep time is increased, the average power can be lowered.
  • the contactless card of the present invention is more suitable for the case of public information, such as a business card, a product manual card, a menu card, etc., it is not necessary to keep the stored information confidential. Therefore, in order to reduce the power consumption of the card, in some applications, it is considered to remove the hardware module mainly used for implementing encryption, authentication or verification functions in the conventional Bluetooth main control module, only for cards with special requirements (such as financial cards, Reserved in the medical card). In this way, the demodulation and modulation process of the signal can relatively reduce the processing steps, thereby improving the processing efficiency while reducing the power consumption; on the other hand, the circuit scale of the Bluetooth main control module can be reduced, thereby reducing the static working power consumption. , further reducing costs.
  • inventions of the present invention can configure a Bluetooth module in two ways.
  • the 13.56 MHz module of the contactless card of this embodiment may further include a control circuit connected to the conversion circuit 32 and the Bluetooth main control module 34.
  • the control circuit monitors the electric power received by the conversion circuit in real time, and sends a notification according to the monitoring result.
  • Signal to the Bluetooth master module to configure the maximum communication distance of the Bluetooth master module or configure the transmit power of the Bluetooth master module.
  • the source circuit is turned off or enters a power saving mode, such as turning off the control circuit while keeping the coupled antenna and switching circuit operating.
  • the control circuit may not be able to send a notification signal about the received power of the conversion circuit to the Bluetooth main control module. Therefore, it is often necessary to initialize the maximum communication distance of the Bluetooth main control module or configure the transmission of the Bluetooth main control module during the production process. power.
  • the control circuit can send the notification signal to the Bluetooth module in real time, and as a result, the conversion circuit has a wider conversion according to the power supply performance of the NFC reader of different mobile terminals.
  • the receiving power so that the Bluetooth main control module can also adjust the maximum communication distance autonomously according to the receiving power or configure the transmitting power of the Bluetooth main control module, and the adaptability is better, and the communication range is likely to be larger.
  • the embodiments of the present invention can be implemented based on the simple setting of the existing NFC module and the existing Bluetooth module, without substantially modifying the hardware, designing the wafers of the two modules to the same card and correspondingly The configuration is OK.
  • the contactless card of the embodiment of the present invention mainly includes a coupling antenna 41, a conversion circuit 42, a data transceiver circuit 43, a storage circuit 44, a control circuit 45, and a Bluetooth antenna 46.
  • the coupling antenna 41 is for receiving an external modulated signal and/or an unmodulated carrier signal.
  • the frequency of the modulated signal and the carrier signal is 13.56 MHz
  • the coupled antenna 41 receives the NFC signal
  • the coupled antenna 41 receives the RFID signal.
  • the conversion circuit 42 is coupled to the coupling antenna 41 for rectifying and stabilizing the received modulated signal and/or carrier signal to output a DC voltage.
  • the data transceiver circuit 43, the storage circuit 44, and the control circuit 45 are all connected to the conversion circuit 42, and the DC voltage output from the conversion circuit 42 is used as the operating power source.
  • the data transceiver circuit 43 is connected to the conversion circuit 42 and the Bluetooth antenna 46, respectively, for demodulating the Bluetooth signal received from the Bluetooth antenna 46, and modulating the Bluetooth data to be transmitted through the Bluetooth antenna 46 to obtain a Bluetooth signal and transmitting the Bluetooth signal to the Bluetooth signal.
  • Bluetooth antenna 46 is used to receive and transmit Bluetooth signals.
  • the control circuit 45 is connected to the data transmitting and receiving circuit 43 and the storage circuit 44, and reads data from the storage circuit 44 or writes data to the storage circuit 44 based on the signal demodulated by the data transmitting and receiving circuit 43.
  • the current short-range communication system mainly includes an NFC communication system and an RFID (radio frequency identification) communication system, so the external modulation signal and carrier signal can be from an NFC reader or from an RFID reader.
  • the coupled antenna can also be a 125 kHz coupled antenna with a center oscillation frequency of 125 kHz, which is another carrier frequency used by RFID communication systems.
  • the coupling antenna 41 and the like are regarded as the main body of the contactless card, and the data transmitting and receiving circuit 43 and the Bluetooth antenna 46 are regarded as one communication link.
  • the main function of the contactless card is to store and process signals. In this sense, short-range communication (such as NFC communication) and Bluetooth communication can be used as the communication chain of the contactless card of the present invention. road.
  • the contactless card simultaneously communicates with the wireless communication module on the mobile terminal via the coupling antenna and the Bluetooth antenna.
  • the data transmitting and receiving circuit 43 is also connected to the coupling antenna 41 (shown in FIG. 4) for demodulating the modulated signal received from the coupling antenna 41, and modulating the data to be transmitted through the coupling antenna 41.
  • the coupled antenna 41 is transmitted, wherein the modulated signal is, for example, an NFC signal (of course, it can also be an RFID signal).
  • the data transceiving circuit 43 is not connected to the coupling antenna 41, only the Bluetooth communication link is used for communication, and the data transceiving circuit 43 is mainly used for modulating/demodulating the Bluetooth signal.
  • the data transceiving circuit 43 is also connected to the coupling antenna 41, the data transceiving circuit 43 is not only used to tune the Bluetooth signal.
  • the system/demodulation is also used to modulate/demodulate a signal communicated through the coupling antenna 41. If the coupled antenna 41 receives and transmits an NFC signal, the data transceiver circuit 43 is not only used to modulate/demodulate the Bluetooth signal, but also to modulate/demodulate the NFC signal.
  • the data transceiver circuit 43 is not only used to modulate/demodulate the Bluetooth signal, but also to modulate a non-Bluetooth signal (such as an NFC signal). /demodulation.
  • the portion that modulates/demodulates the Bluetooth signal and modulates/decomposes the NFC signal when the data transceiver circuit 43 simultaneously modulates/demodulates the Bluetooth signal and the NFC signal, the portion that modulates/demodulates the Bluetooth signal and modulates/decomposes the NFC signal.
  • the adjusted parts can be fused together or separated separately.
  • Those skilled in the art can also understand that for other types of non-Bluetooth signals, the same can be understood by means of NFC signals; that is, when the data transceiver circuit 43 simultaneously modulates/demodulates the Bluetooth signal and the non-Bluetooth signal, The portions of the two signals that are modulated/demodulated may be fused together or separately.
  • Fig. 5 shows another contactless card of an embodiment of the present invention.
  • the coupled antenna 41b receives and transmits an NFC signal, and the Bluetooth signal processing circuit 42b modulates/demodulates the Bluetooth signal, and the NFC signal processing circuit 43b that modulates/demodulates the NFC signal.
  • the coupling antenna 41b generally receives an NFC signal of 13.56 MHz, and the portion mainly used for modulating/demodulating the NFC signal is an NFC signal processing circuit 43b, which is mainly used for modulating/demodulating the Bluetooth signal.
  • the part is the Bluetooth signal processing circuit 42b.
  • the conversion circuit 44b simultaneously connects the NFC signal processing circuit 43b and the Bluetooth signal processing circuit 42b to supply power to both.
  • the coupled antenna 41b is also coupled to the NFC signal processing circuit 43b for receiving and transmitting NFC signals.
  • the Bluetooth antenna 45b is connected to the Bluetooth signal processing circuit 42b for receiving and transmitting Bluetooth signals.
  • the control circuit 46b and the storage circuit 47b are connected to the conversion circuit 44b to operate with a DC voltage, and the control circuit 46b is also connected to the NFC signal processing circuit 43b and the Bluetooth signal processing circuit 42b.
  • the control circuit 46b and the memory circuit 47b can be integrated.
  • FIG. 5 please also refer to the description of the embodiment shown in FIG.
  • the coupling antenna 41b and the NFC signal processing circuit 43b constitute a communication link (NFC communication link) of the contactless card
  • the Bluetooth antenna 45b and the Bluetooth signal processing circuit 42b constitute a contactless type.
  • Another communication link for the card Bluetooth communication link.
  • the contactless card of the present invention can include both communication links at the same time.
  • the reader/writer terminal on the mobile terminal is also equipped with two communication links for Bluetooth communication and NFC communication with the contactless card of the present invention.
  • the storage circuit and the control circuit share settings, they can be implemented by the same unit (such as the control circuit).
  • the link shares share a control circuit.
  • the Bluetooth signal processing circuit is configured to have a transmit power of no more than -1 dBm, for example configured from -1 dBm to -99 dBm.
  • a transmit power of no more than -1 dBm, for example configured from -1 dBm to -99 dBm.
  • the Bluetooth signal processing circuit is configured to transmit any signal to any point at a predetermined distance from the contactless card (any point on the spherical surface with the radius being a preset distance centered on the contactless card)
  • the RSSI value is not greater than -100 dBm.
  • the Bluetooth signal processing circuit of this embodiment needs to adjust its own transmission power.
  • the instantaneous transmission power of the Bluetooth signal processing circuit is not greater than the output power of the conversion circuit.
  • the Bluetooth signal processing circuit is configured to perform signal transmission at the maximum communication distance, the instantaneous transmission power consumption does not exceed (ie, is less than or equal to) the power output by the conversion circuit.
  • the Bluetooth signal processing circuit can be configured in two ways. The control circuit can monitor the electric power received by the conversion circuit in real time, and according to the monitoring result, send a notification signal to the Bluetooth signal processing circuit to configure the maximum communication distance of the Bluetooth unit or configure the transmission power of the Bluetooth signal processing circuit. On the other hand, it is possible to initialize the maximum communication distance of the Bluetooth signal processing circuit or configure the transmission power of the Bluetooth signal processing circuit during the production process.
  • the NFC signal processing circuit when it is not necessary to exchange the NFC signal, but only needs to be powered by the NFC communication link, the NFC signal processing circuit may not be enabled.
  • the control circuit is only used to read and write according to the signals of the Bluetooth signal processing circuit.
  • the NFC signal processing circuit When the NFC signal needs to be exchanged, for example, by quickly exchanging the device name and device address (ie, pairing) of the Bluetooth signal processing circuit and the Bluetooth communication module on the mobile terminal through the NFC communication link, the NFC signal processing circuit, NFC, needs to be enabled.
  • the signal processing circuit is configured to demodulate the modulated signal of the coupled antenna by the module, and modulate the information to be exchanged and send the information to the NFC communication module on the mobile terminal through the coupled antenna.
  • the power consumption by the coupled antenna is limited, the application of the contactless card of the present invention is substantially within 0.5 meters, for example, only a communication distance of 0-10 cm is required. Therefore, the power consumption of the contactless card can be reduced in various ways.
  • an electric storage module is additionally provided on the basis of the foregoing fourth embodiment.
  • the power storage module 63 is connected to the conversion circuit 62, and includes a storage element, and the storage element is charged by the DC voltage output from the conversion circuit 62.
  • the Bluetooth communication link when the Bluetooth communication link operates, only a part of the time consumes a large amount of power in one communication cycle, and the remaining time consumption is small. There is a case where the instantaneous power of the current peak exceeds the electrical power supplied by the conversion circuit. At this time, in order to ensure that the Bluetooth communication link can work normally, it can be charged by the power storage module 63 before its operation, and when the charging reaches the set value, the components in the Bluetooth communication link are turned on for communication.
  • the conversion circuit 62 can continue to charge the power storage module 63 in addition to directly supplying power to the associated circuit, thereby providing the next communication cycle.
  • the instantaneous current peak is prepared. For example, within a set communication period of 6.25 ms, the first 1.25 ms is used to receive and transmit the modulated signal, and the instantaneous current is the peak value; after 1.25 ms, the received modulated signal is internally processed for the Bluetooth communication link (including It is not limited to demodulation, decryption, calculation, writing, and reading, etc., and the stage of sleep after processing.
  • the power storage module may further include a power storage control unit, wherein the power storage element is one or more components including a capacitor or an inductor and the like, and the power storage control unit is configured to control the power storage element. Charging and discharging. As mentioned earlier, in the latter part of a communication cycle, the Bluetooth communication link consumes very little power, and the power storage control unit can control the storage element for more adequate charging, which is a high-energy operation and time. prepare.
  • the conversion circuit 62 and the power storage module 63 simultaneously supply power to other modules of the contactless card.
  • the conversion circuit 62 and the power storage module 63 may also be in a series relationship, that is, the conversion circuit 62.
  • the output DC voltage is supplied only to the power storage module 63, and the power storage module 63 supplies power to other modules of the contactless card.
  • the coupling antenna 61, the conversion circuit 62, the storage circuit 64, the control circuit 65, the data transceiver circuit 66, the Bluetooth antenna 67, etc. are connected to the corresponding circuits in the embodiment shown in FIG. No longer.
  • the instantaneous power of the Bluetooth communication link is not necessary to limit the instantaneous power of the Bluetooth communication link to be greater than the output power of the conversion circuit.
  • the instantaneous power of the data transceiver circuit can be greater than the output power of the conversion circuit, thereby improving the stability of the contactless card.
  • the power storage module is added on the basis of the fourth embodiment.
  • the power storage module can also be added on the basis of the fifth embodiment.
  • another non-contact card according to an embodiment of the present invention is in the foregoing fifth embodiment.
  • an additional power storage module 78 is added.
  • the power storage module 78 is connected to the conversion circuit 74, and includes a storage element, and the storage element is charged by the DC voltage output from the conversion circuit 74.
  • the power storage module 78 is connected to the conversion circuit 74, the control circuit 76, the NFC signal processing circuit 73, and the Bluetooth signal processing circuit 72 (the corresponding connection relationship is not shown) for supplying power only to the Bluetooth signal processing circuit 72 or respectively.
  • Power is supplied to the control circuit 76, the NFC signal processing circuit 73, and the Bluetooth signal processing circuit 72 to supplement the power supply to the Bluetooth signal processing circuit 72 while the Bluetooth signal processing circuit 72 is acquiring power from the conversion circuit 74; or at the control circuit 76.
  • the NFC signal processing circuit 73 and the Bluetooth signal processing circuit 72 and the like receive power from the conversion circuit 74, and supply power to the control circuit 76, the NFC signal processing circuit 73, and the Bluetooth signal processing circuit 72.
  • the coupling antenna 71, the Bluetooth signal processing circuit 72, the NFC signal processing circuit 73, the conversion circuit 74, the Bluetooth antenna 75, the control circuit 76, the storage circuit 77, and the like in this embodiment are also combined with the foregoing embodiment 5 and the fourth embodiment.
  • Embodiment 6 is not described here. Moreover, it should be noted that the present embodiment is based on the foregoing fifth embodiment shown in FIG. 5, and is based on the improvement of the fourth embodiment based on the foregoing embodiment 6, and thus the foregoing embodiment five, the fourth embodiment and the implementation The contents of Example 6 are helpful in understanding the embodiment shown in FIG.
  • the DC voltage outputted by the conversion circuit 74 may be provided only to the power storage module 78, and then the power storage module 78 to the other non-contact card. The module is powered.
  • the communication connection method between the contactless card and the mobile terminal in the embodiment of the present invention, as shown in FIG. 8, generally includes the following steps:
  • step S810 the user brings the contactless card close to the mobile terminal.
  • Step S820 when the mobile terminal opens the reader, the contactless card enters the effective communication range, and can receive the 13.56 MHz modulated signal or the carrier signal, and the conversion circuit converts the AC voltage to supply other circuits, non-contact.
  • the NFC module of the card starts working.
  • Step S830 the NFC module assists the Bluetooth communication module to complete Bluetooth pairing between the mobile terminal and the contactless card.
  • the use of an NFC module for fast pairing of Bluetooth communication modules and then establishing a Bluetooth communication mode is well known to those skilled in the art, such as the pairing and connection establishment disclosed in Chinese Patent Application Nos. CN201210007084.2, CN201010019422.5, and CN200480015810.9. method. This application does not describe this.
  • the present invention is not limited to assisting the pairing of the Bluetooth communication module as a necessary function of the NFC module of the present invention, utilizing the existing Bluetooth pairing method (for example, It is also possible to search for a Bluetooth communication module on a mobile device and then select and pair it.
  • the NFC module of the present invention is mainly used for supplying power to a Bluetooth communication module, or mainly for low-speed communication (relative to For the Bluetooth communication module).
  • the Bluetooth communication module can work in master mode, slave mode and broadcast mode.
  • the contactless card of the present invention does not need to be paired with the Bluetooth device on the reader/writer, and the Bluetooth device within the effective communication range of the contactless card can receive the contactless card.
  • the Bluetooth communication signal sent to the outside, thereby transferring the data of the storage unit to the reader.
  • Step S840 maintaining the effective communication range of the contactless card in the reader/writer of the mobile terminal, and transmitting and transmitting with the mobile terminal by using the Bluetooth communication module.
  • the NFC module in the embodiment shown in FIG. 8 can be replaced with the 13.56 MHz module in the foregoing embodiment of the present invention.
  • the 13.56 MHz module is replaced with the NFC module, please refer to the technical content of the eighth embodiment shown in FIG. 8 and the non-contact card according to the first embodiment to the seventh embodiment.
  • the improved communication module is powered by the NFC module.
  • the improved Bluetooth communication module has a short effective communication distance and low power consumption compared to the existing Bluetooth communication module.
  • the Bluetooth communication module consumes less than or equal to the power provided by the NFC module, so even the non-contact type The card can still work normally without setting the battery.
  • the transmission speed of the Bluetooth module is several to several tens of times faster than that of the NFC module, the combination scheme of the present invention solves the problem of contradiction between power supply and transmission speed.
  • an independent power supply battery in the non-contact card as an example, in practice, an independent power supply battery can also be provided in the contactless card to meet the needs of some occasions. Those skilled in the art can understand that the implementation of the above embodiments is not affected after the independent power supply battery is provided.
  • the storage unit can also be set in the Bluetooth main control module, and the multimedia information stored in the storage circuit is stored in the storage unit of the Bluetooth main control module, and after the Bluetooth pairing is completed, the contactless card and the The communication between the mobile terminals can be implemented on the Bluetooth main control module, so that the NFC module or the NFC signal processing circuit can be turned off or enter the power saving mode, and the conversion circuit can still normally receive the carrier signal or the modulated signal to other circuits and The power supply of the Bluetooth main control module does not affect the work of the Bluetooth main control module.
  • the communication method of the contactless card according to the embodiment of the present invention mainly includes the following steps.
  • Step S910 receiving an external modulated signal and/or a carrier signal.
  • Step S920 rectifying and stabilizing the received modulated signal and/or carrier signal, and outputting a DC voltage.
  • Step S930 performing Bluetooth communication with the external using the output DC voltage, and using the DC voltage to perform data reading or writing related to Bluetooth communication.
  • the communication method of the contactless card according to the embodiment of the present invention further utilizes the DC voltage to perform NFC communication or RFID communication with the outside, and uses the DC voltage to perform data reading or writing related to NFC communication or RFID communication.
  • the contactless card can be configured to be read-only or readable and writable according to the purpose, the Bluetooth communication of the contactless card can be only for the read data operation, and does not include the write data operation; or the read data operation and the write data are included. operating.
  • the electric power of the output DC voltage is monitored in real time, and the maximum communication distance or transmission power of the Bluetooth communication is configured according to the monitoring result.
  • the transmit power of Bluetooth communication with the outside is configured to be no more than -1 dBm.
  • the transmission power of Bluetooth communication with the outside is configured between -1 dBm and -99 dBm.
  • the RSSI value of any receiving point at a preset distance range near the transmitting source of the Bluetooth communication is not more than -100 dBm.
  • the power supply method of the contactless card according to the embodiment of the present invention mainly includes the following steps.
  • Step SA1 receiving an external modulated signal and/or an unmodulated carrier signal.
  • step SA2 the received modulated signal and/or the carrier signal are rectified and stabilized to obtain a DC voltage.
  • step SA3 the DC voltage is used to supply power to the external Bluetooth communication, and the DC voltage is used to supply power for data reading or writing corresponding to the Bluetooth communication.
  • the power supply method of the contactless card according to the embodiment of the present invention further utilizes the DC voltage to supply power to the outside by NFC communication or RFID, and utilizes the DC voltage to read or write data corresponding to the NFC communication or the RFID communication. Power is supplied.
  • the contactless card can be configured to be read-only or readable and writable according to the purpose, the Bluetooth communication of the contactless card can be only for the read data operation, and does not include the write data operation; or the read data operation and the write data are included. operating.
  • the power consumption of Bluetooth communication is reduced by reducing the transmission power, reducing the communication rate, or reducing the reception sensitivity.
  • the electric power of the DC voltage is monitored in real time, and the maximum communication distance or transmission power of the Bluetooth communication is configured according to the monitoring result.
  • the built-in power storage module is further charged by the DC voltage, and the power storage module is used to supply power to the external communication independently or together with the DC voltage.
  • the communication method of the contactless card described in the ninth embodiment of the present invention and the non-described description of the tenth embodiment of the present invention For the power supply method of the contact card, please also refer to the description of the contactless card in the foregoing Embodiment 4 to Embodiment 7. Of course, the foregoing descriptions of the first embodiment to the third embodiment and the eighth embodiment can also help to understand the communication method of the contactless card described in the ninth embodiment of the present invention and the contactless card described in the tenth embodiment of the present invention. Power supply method.
  • Embodiment 6 and Embodiment 7 respectively illustrate an embodiment in which a power storage module is disposed on a contactless card.
  • the power storage module may be disposed to the foregoing embodiment 1 to The third is used to balance the power consumption of the non-contact card under different working conditions, and improve the stability of the non-contact card.
  • the instantaneous power of the Bluetooth master module can be greater than the output power of the conversion circuit, thereby improving the stability of the contactless card.
  • the Bluetooth main control module or the control circuit may include a CPU or an MCU, or may not include, but replace the function of the CPU or the MCU by a hardware circuit capable of performing a specific function.
  • the function of the contactless card can be modified and adjusted by firmware or software, and has greater flexibility.
  • the response speed is faster and the circuit is more power-saving. .
  • the components of the apparatus provided by the embodiments of the present invention and the steps in the method may be concentrated on a single computing device or distributed in a network composed of multiple computing devices. on. Alternatively, they may be implemented in program code executable by a computing device. Thus, they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof may be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Near-Field Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne une carte sans contact et un procédé de communication et d'alimentation électrique associé, surmontant la gêne provoquée par la faible vitesse de transmission, un coût élevé et une grande taille de cartes sans contact de capacité élevée courantes. La carte comprend : une antenne Bluetooth et un circuit de stockage ; une antenne de couplage pour recevoir un signal de modulation externe et/ou un signal de porteuse ; un circuit de conversion pour délivrer une tension continue sur la base du signal de modulation et/ou du signal de porteuse ; un circuit d'émetteur-récepteur de données pour mettre en œuvre une communication Bluetooth externe au moyen de l'antenne Bluetooth ; et un circuit de commande pour mettre en œuvre la lecture ou l'écriture de données dans le circuit de stockage sur la base de la communication Bluetooth du circuit d'émetteur-récepteur de données ; le circuit de stockage, le circuit d'émetteur-récepteur de données et le circuit de commande accédant respectivement à une tension continue agissant comme l'alimentation électrique de fonctionnement de cette dernière. La présente invention surmonte la défaillance de la vitesse de transmission relativement faible de cartes sans contact, et utilise de manière efficace la capacité d'une carte sans contact de telle sorte que la carte sans contact peut stocker simultanément des informations abondantes et transmettre rapidement des informations.
PCT/CN2015/097388 2014-12-15 2015-12-15 Carte sans contact et procédé de communication et d'alimentation électrique associé WO2016095803A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201410782498 2014-12-15
CN201410782498.1 2014-12-15
CN201510039763.1 2015-01-26
CN201510039763 2015-01-26

Publications (1)

Publication Number Publication Date
WO2016095803A1 true WO2016095803A1 (fr) 2016-06-23

Family

ID=55470387

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/CN2015/097387 WO2016095802A1 (fr) 2014-12-15 2015-12-15 Carte sans contact et son procédé de communication et d'alimentation
PCT/CN2015/097385 WO2016095801A1 (fr) 2014-12-15 2015-12-15 Carte sans contact et son procédé de communication et d'alimentation
PCT/CN2015/097388 WO2016095803A1 (fr) 2014-12-15 2015-12-15 Carte sans contact et procédé de communication et d'alimentation électrique associé

Family Applications Before (2)

Application Number Title Priority Date Filing Date
PCT/CN2015/097387 WO2016095802A1 (fr) 2014-12-15 2015-12-15 Carte sans contact et son procédé de communication et d'alimentation
PCT/CN2015/097385 WO2016095801A1 (fr) 2014-12-15 2015-12-15 Carte sans contact et son procédé de communication et d'alimentation

Country Status (2)

Country Link
CN (4) CN205354075U (fr)
WO (3) WO2016095802A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507290A (zh) * 2016-12-14 2017-03-15 国网浙江省电力公司 一种用于可分离式移动作业终端的蓝牙安全配对方法
CN107134029A (zh) * 2017-04-27 2017-09-05 苏州健雄职业技术学院 一种基于rfid的出入检测系统及其工作方法
CN107846287B (zh) * 2017-11-15 2020-05-26 维沃移动通信有限公司 一种供电控制方法及移动终端
CN109959858B (zh) * 2017-12-26 2022-03-15 新智数字科技有限公司 一种蓝牙卡功耗测试的方法、装置
CN108470202A (zh) * 2018-02-06 2018-08-31 沈海斌 一种nfc-蓝牙双界面非接触式卡片系统
CN110463056B (zh) * 2018-02-09 2021-12-28 梁嘉威 用于安全无线支付的无电池式有源和无源混合器件及其方法
CN109861727B (zh) * 2019-03-15 2021-08-20 深圳市雄帝科技股份有限公司 无线通信方法及无线通信系统
US10997483B2 (en) * 2019-06-12 2021-05-04 Stmicroelectronics, Inc NFC antenna switch
CN110610572A (zh) * 2019-09-29 2019-12-24 沈阳格众科技有限公司 一种可调节开门距离的蓝牙门禁控制系统和方法
CN111432382B (zh) * 2020-03-10 2020-12-22 刘天舒 一种数据传输方法、装置、系统及nfc存储设备
CN112825173B (zh) * 2020-11-03 2024-02-09 中国银联股份有限公司 卡片交易安全验证方法以及移动终端
CN113283563A (zh) * 2021-06-18 2021-08-20 优思物联科技(深圳)有限公司 物品标签
CN114580594B (zh) * 2022-03-08 2024-01-30 浙江大学 一种近距离非接触式存储卡系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130234528A1 (en) * 2012-03-09 2013-09-12 Infineon Technologies Ag Power supply apparatus for providing a voltage from an electromagnetic field
CN203349843U (zh) * 2013-06-18 2013-12-18 刘力 基于nfc技术的智能传感器
CN103905073A (zh) * 2012-11-27 2014-07-02 美国博通公司 用于近场通信的多天线布局
CN105099527A (zh) * 2015-09-08 2015-11-25 王清斌 一种具有独立能量接收天线的无源nfc通信接口

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200912846A (en) * 2007-09-06 2009-03-16 G Time Electronic Co Ltd Radio frequency (RF) sensing system, RF display device, and puzzle system using the same
WO2010025157A1 (fr) * 2008-08-26 2010-03-04 Qualcomm Incorporated Transmission de puissance sans fil simultanée et communication de champ proche
EP2521072A1 (fr) * 2011-05-06 2012-11-07 Gemalto SA Dispositif de communication radiofréquence comportant une alimentation d'origine radiofréquence assistée
CN202135126U (zh) * 2011-06-29 2012-02-01 深圳市江波龙电子有限公司 一种近距离无线通讯装置及系统
CN102609670A (zh) * 2012-01-18 2012-07-25 福建鑫诺通讯技术有限公司 一种有源rfid卡片防碰撞系统及其防碰撞方法
DE112012005748T5 (de) * 2012-02-24 2014-11-20 Hewlett-Packard Development Company, L.P. Nahfeldkommunikation (NFC) und Aufprallsensor
CN103390923B (zh) * 2012-05-10 2016-08-17 航天信息股份有限公司 利用电磁波对有源卡片进行充电的方法、装置和系统
CN103683366B (zh) * 2012-09-26 2017-11-03 联想(北京)有限公司 电子设备供电方法、供电处理器、供电装置和系统
CN203456920U (zh) * 2013-09-23 2014-02-26 清华大学深圳研究生院 一种卡片式电子设备及电子系统
CN103513592B (zh) * 2013-09-29 2017-01-04 深圳前海君浩银通科技发展有限公司 能量自适应终端系统及终端系统的能量自适应方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130234528A1 (en) * 2012-03-09 2013-09-12 Infineon Technologies Ag Power supply apparatus for providing a voltage from an electromagnetic field
CN103905073A (zh) * 2012-11-27 2014-07-02 美国博通公司 用于近场通信的多天线布局
CN203349843U (zh) * 2013-06-18 2013-12-18 刘力 基于nfc技术的智能传感器
CN105099527A (zh) * 2015-09-08 2015-11-25 王清斌 一种具有独立能量接收天线的无源nfc通信接口

Also Published As

Publication number Publication date
CN105610472A (zh) 2016-05-25
CN105550738A (zh) 2016-05-04
CN105404913A (zh) 2016-03-16
WO2016095801A1 (fr) 2016-06-23
WO2016095802A1 (fr) 2016-06-23
CN205354075U (zh) 2016-06-29

Similar Documents

Publication Publication Date Title
WO2016095803A1 (fr) Carte sans contact et procédé de communication et d'alimentation électrique associé
US9641028B2 (en) Method, apparatus, and computer program product for powering electronic devices
JP5792397B2 (ja) 近距離通信システムにおける接続確立のための電力消費の削減
JP5902358B2 (ja) 近接場通信における負荷変調を使用するデバイス検出
US10503939B2 (en) Method and apparatus for energy harvest from a proximity coupling device
US8797146B2 (en) Autonomous battery-free microwave frequency communication system
US20130244578A1 (en) Method, apparatus, and computer program product for short-range wireless communication
JP2012512463A (ja) 両立的または排他的なｒｆｉｄタグの交信およびクエリラウンド
KR20140110389A (ko) 비접촉 통신 장치 및 그것을 포함한 유저 장치
US9398531B1 (en) Dynamic field control method and system to conserve energy during NFC communication
US20130137370A1 (en) Modified connection establishment for reducing power consumption in near field communication systems
US20240179639A1 (en) Wireless communication method and device
KR20150014692A (ko) Ｎｆｃ 기능 내장 무선 칩 모듈, 전자가격표시 단말 및 ｎｆｃ 기능 내장 무선 칩 모듈 동작 방법
WO2021212303A1 (fr) Étiquette électronique et système associé
CN204117179U (zh) 带稳定触发输出功能nfc标签及电子设备
US20240178700A1 (en) Wireless communication method and apparatus, and communication device
WO2024065700A1 (fr) Procédé de communication sans fil et dispositifs
EP4391661A1 (fr) Procédé de communication sans fil, et dispositif
WO2024082267A1 (fr) Procédé de communication sans fil et dispositif
WO2023000173A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
WO2024007312A1 (fr) Procédé de communication sans fil et équipement terminal
WO2023070260A1 (fr) Procédé et dispositif de communication sans fil
WO2023004747A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau
WO2023070453A1 (fr) Procédé de communication sans fil, premier dispositif et deuxième dispositif
WO2023004748A1 (fr) Procédé de communication sans fil, dispositif terminal et dispositif de réseau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15869310

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205ADATED 09/10/2017)

122 Ep: pct application non-entry in european phase

Ref document number: 15869310

Country of ref document: EP

Kind code of ref document: A1