WO2018133676A1 - 读卡响应方法、装置及系统、信号收发设备 - Google Patents

读卡响应方法、装置及系统、信号收发设备 Download PDF

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Publication number
WO2018133676A1
WO2018133676A1 PCT/CN2018/071398 CN2018071398W WO2018133676A1 WO 2018133676 A1 WO2018133676 A1 WO 2018133676A1 CN 2018071398 W CN2018071398 W CN 2018071398W WO 2018133676 A1 WO2018133676 A1 WO 2018133676A1
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Prior art keywords
signal
frequency
circuit
carrier signal
electrically connected
Prior art date
Application number
PCT/CN2018/071398
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English (en)
French (fr)
Inventor
李东声
Original Assignee
天地融科技股份有限公司
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
Priority claimed from CN201710058115.XA external-priority patent/CN107070481B/zh
Priority claimed from CN201710058100.3A external-priority patent/CN106941363B/zh
Application filed by 天地融科技股份有限公司 filed Critical 天地融科技股份有限公司
Priority to EP18741739.9A priority Critical patent/EP3573247B1/en
Priority to SG11201906743XA priority patent/SG11201906743XA/en
Priority to US16/479,600 priority patent/US10873358B1/en
Publication of WO2018133676A1 publication Critical patent/WO2018133676A1/zh

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    • 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
    • H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • 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
    • H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to a card reading response method, device and system, and signal transceiving device.
  • RFID Radio Frequency Identification
  • RFID cards are increasingly pursuing miniaturization.
  • For RFID cards with a resonant frequency of 125 kHz due to the relatively low frequency, in order to enable the RFID card to be obtained during card reading.
  • a larger size antenna is required to allow the RFID card to function properly.
  • the 125 KHz antenna is large and is not suitable for use in small devices, how to make the RFID card with a frequency of 12 KHz work properly and the RFID card suitable for use on a small device is an urgent problem to be solved.
  • the present invention is directed to solving the above problems.
  • An aspect of the present invention provides a signal transceiving device, including: an antenna coil having a resonant frequency of 13.56 MHz, an amplifying circuit, an analog-to-digital conversion circuit, a first blocking circuit, a second blocking circuit, a DC power supply, and a micro control unit MCU.
  • the DC power source is electrically connected to the amplifying circuit, the analog-to-digital conversion circuit, and the MCU, respectively, for supplying power to the amplifying circuit, the analog-to-digital conversion circuit, and the MCU; a coil for receiving a carrier signal having a frequency of 125 kHz; the second blocking circuit having one end electrically connected to the antenna coil and the other end electrically connected to an input end of the amplifying circuit for using the carrier signal Transmitting to the amplifying circuit; the amplifying circuit is electrically connected to the second blocking circuit for inputting the carrier signal and amplifying the amplified carrier signal from the output end of the amplifying circuit An analog-to-digital conversion circuit, wherein an input end thereof is electrically connected to an output end of the amplifying circuit, and is configured to perform analog-to-digital conversion on a carrier signal amplified by the amplifying circuit.
  • the data signal is output through an output end of the analog-to-digital conversion circuit;
  • the receiving port of the MCU is electrically connected to an output end of the analog-to-digital conversion circuit, and is configured to: acquire, according to the digital signal a signal characteristic of the carrier signal, the signal characteristic including at least: a frequency and a phase; encoding the data to be output at the frequency to obtain an encoded signal, and determining, according to the phase, outputting a starting phase of the encoded signal,
  • the transmitting port of the MCU outputs the encoded signal;
  • the first blocking circuit has one end electrically connected to a transmitting port of the MCU, and the other end is electrically connected to the antenna coil for transmitting the encoded signal Send to the antenna coil.
  • Another aspect of the present invention provides another signal transceiving device, comprising: an antenna coil having a resonant frequency of 13.56 MHz, an amplifying circuit, an analog-to-digital conversion circuit, a first blocking circuit, a driving device, a second blocking circuit, and a DC a power supply and a micro control unit MCU, wherein: the DC power source is electrically connected to the amplifying circuit, the analog to digital conversion circuit, the driving device, and the MCU, respectively, for the amplifying circuit, the modulus a conversion circuit, the driving device and the MCU power supply; the antenna coil is configured to receive a carrier signal having a frequency of 125 kHz; and the second blocking circuit has one end electrically connected to the antenna coil, and the other end is The input end of the amplifying circuit is electrically connected to transmit the carrier signal to the amplifying circuit; the amplifying circuit has an input end electrically connected to the second blocking circuit for performing the carrier signal Enlarging, outputting the amplified carrier signal from an output end of
  • the driving device includes: an on/off module, including: a first end, a second end, and a control end, wherein the control end is an input end of the driving device, and a sending port of the MCU Electrical connection; the first end is an output end of the driving device, electrically connected to the first DC blocking circuit, and the first end is electrically connected to a DC power source; the second end is electrically connected to the ground end
  • the on/off module is configured to turn on or off an electrical connection between the first end and the second end under the control of the control signal.
  • the analog to digital conversion circuit comprises: an A/D sampling circuit or a voltage comparison circuit.
  • the method further includes: a transceiver circuit electrically connected to both ends of the antenna coil, configured to receive and transmit a signal having a frequency of 13.56 MHz; and a card reader having a frequency of 13.56 MHz electrically connected to the transceiver circuit And a card chip for parsing the signal received by the transceiver circuit and encoding the signal sent by the transceiver circuit.
  • the method further includes: a rectifying device, wherein the input ends are electrically connected to the two ends of the antenna coil, respectively, for receiving an AC signal output by the antenna coil, and rectifying the AC signal, from the rectifying device The output outputs a DC signal.
  • a rectifying device wherein the input ends are electrically connected to the two ends of the antenna coil, respectively, for receiving an AC signal output by the antenna coil, and rectifying the AC signal, from the rectifying device The output outputs a DC signal.
  • the method further includes: a charging port electrically connected to the output of the rectifying device for acquiring electric energy from the rectifying device.
  • the method further includes: a switching device electrically connected between the output end of the rectifying device and the charging port for connecting or disconnecting the electrical connection between the rectifying device and the charging port.
  • a signal response method includes: receiving, by an antenna having a resonant frequency of 13.56 MHz, a carrier signal having a frequency of 125 kHz; amplifying the carrier signal, and performing analog-to-digital conversion on the amplified signal to obtain a digital
  • the signal is obtained according to the digital signal, and the signal characteristic includes at least: frequency and phase; the response data is encoded by the frequency to obtain a coded signal, and the initial phase of the output coded signal is determined according to the phase, and the coded signal is output through the antenna. , so that the encoded signal and the carrier signal are superimposed at the same phase.
  • phase difference between the starting phase and the carrier signal is zero.
  • response data is a unique identification number.
  • a further aspect of the present invention provides a signal response apparatus, comprising: a receiving module, configured to receive a carrier signal having a frequency of 125 kHz by using an antenna having a resonant frequency of 13.56 MHz; and a signal processing module for amplifying the carrier signal, and The amplified signal is subjected to analog-to-digital conversion to obtain a digital signal; the signal characteristic acquisition module is configured to acquire a signal characteristic of the carrier signal according to the digital signal, the signal characteristic includes at least: frequency and phase; and an output module configured to perform response data by frequency Encoding, obtaining the encoded signal, and determining the starting phase of the output encoded signal according to the phase, and outputting the encoded signal through the antenna so that the encoded signal and the carrier signal are superimposed at the same phase.
  • phase difference between the starting phase and the carrier signal is zero.
  • response data is a unique identification number.
  • the signal processing module includes at least an amplifier and a comparator, or the signal processing module includes at least an amplifier and a sampling circuit.
  • Yet another aspect of the present invention provides a signal response system including a read/write device and the above-described signal response device; a read/write device for transmitting a carrier signal having a frequency of 125 kHz and receiving the encoded signal.
  • the present invention provides a signal transceiving device that uses an antenna coil having a resonant frequency of 13.56 MHz and performs a carrier signal with a frequency of 125 kHz through an amplifying circuit.
  • the amplification is performed, so that the MCU can recognize the received carrier signal with a frequency of 125 kHz, and realize reception of a carrier signal with a frequency of 125 kHz.
  • the MCU can analyze the frequency and phase of the carrier signal sent by the sender from the received carrier signal with a frequency of 125 kHz, and then encode the response signal through the antenna coil output and the transmitter with a resonant frequency of 13.56 MHz.
  • the frequency and phase matching number information of the transmitted carrier signal realizes transmission of a carrier signal having a frequency of 125 kHz through an antenna coil having a resonance frequency of 13.56 MHz.
  • the resonant frequency is 13.56 MHz of the antenna coil, it is possible to ensure that the RFID card is suitable for use on a small device.
  • FIG. 1 is a schematic structural diagram of a signal transceiving device according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of another signal transceiving device according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural diagram of a circuit of a rectifying device according to Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural diagram of a circuit of a switching apparatus according to Embodiment 1 of the present invention.
  • FIG. 5 is a schematic circuit diagram of a signal transceiving device according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of a signal transceiving device according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic structural diagram of another signal transceiving device according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic structural diagram of a signal response apparatus according to Embodiment 4 of the present invention.
  • FIG. 10 is a schematic structural diagram of a signal response system according to Embodiment 5 of the present invention.
  • This embodiment provides a signal transceiving device.
  • FIG. 1 is a schematic structural diagram of a signal transceiving device according to an embodiment of the present invention.
  • the signal transceiving device mainly includes an antenna coil 101 with a resonant frequency of 13.56 MHz, an amplifying circuit 102, and an analog-to-digital conversion circuit 103.
  • the DC power supply 100 is electrically connected to the amplification circuit 102, the analog-to-digital conversion circuit 103, and the MCU 104, respectively, for supplying power to the amplification circuit 102, the analog-to-digital conversion circuit 103, and the MCU 104.
  • the antenna coil 101 is configured to receive a carrier signal having a frequency of 125 kHz.
  • the second blocking circuit 105 has one end electrically connected to the antenna coil 101 and the other end electrically connected to the input end of the amplifying circuit 102 for transmitting the carrier signal to the amplifying circuit 102; the amplifying circuit 102, the input end thereof and the second The blocking circuit 105 is electrically connected for amplifying the carrier signal of the frequency of 125 kHz received by the antenna coil 101, and outputting the amplified carrier signal from the output end of the amplifying circuit 102; the analog-to-digital conversion circuit 103 has an input terminal thereof The output end of the amplifying circuit 102 is electrically connected to perform analog-to-digital conversion on the carrier signal amplified by the amplifying circuit 102 to obtain a digital signal, and the data signal is passed through the output end of the analog-to-digital conversion circuit 103.
  • An MCU 104 whose receiving port is electrically connected to an output end of the analog-to-digital conversion circuit 103, for acquiring a signal of the carrier signal according to the digital signal Characteristic, the signal characteristic includes at least: a frequency and a phase; encoding the data to be output at the frequency to obtain an encoded signal, and determining, according to the phase, outputting a starting phase of the encoded signal, from the MCU 104
  • the transmitting port outputs the encoded signal;
  • the first blocking circuit 106 has one end electrically connected to the transmitting port of the MCU 104 and the other end electrically connected to the antenna coil 101 for transmitting the encoded signal to the The antenna coil 101 transmits.
  • the antenna coil having the resonance frequency of 13.56 MHz is smaller than the antenna coil having the resonance frequency of 125 kHz, the antenna coil having the resonance frequency of 13.56 MHz can be set on the small device to prevent the antenna coil from being excessively large. It is not easy to miniaturize the design. Therefore, in this embodiment, an antenna coil having a resonance frequency of 13.56 MHz is provided on the signal transmitting and receiving device, and signal transmission and reception is performed by an antenna coil having a resonance frequency of 13.56 MHz.
  • the signal transceiving device in this embodiment is provided with an amplifying circuit 102 for amplifying the carrier signal of the frequency of 125 kHz received by the antenna coil 101, and the amplified carrier signal passes through the mode.
  • the number conversion circuit 103 converts the carrier signal into a digital signal, so that the MCU 104 can identify the input data signal, can acquire the frequency and phase of the carrier signal transmitted by the sender, and then the MCU 104 actively returns to the sender.
  • the MCU 104 In response to the data (ie, the data to be outputted above), when encoding the response data, the MCU 104 encodes the response data using the acquired frequency, and determines the starting phase of the output encoded signal according to the phase of the transmitted carrier signal, and passes the first The blocking circuit 106 transmits the code to the antenna coil 101 for transmission.
  • the response data sent by the MCU 104 may be the unique identification number of the RFID card, e.g., the unique electronic encoding of the RFID tag, and the like.
  • a DC power supply 100 is disposed in the signal transceiving device.
  • a first DC blocking circuit 106 is disposed between the MCU 104 and the antenna coil 101, and the amplifying circuit 102 and the antenna coil are disposed.
  • a second blocking circuit 105 is disposed between the electrodes 101, so that the direct current signal cannot be transmitted to the antenna coil 101, thereby avoiding the influence of the direct current signal of the direct current power source 100 on the transmitting and receiving signals of the antenna coil 101.
  • the resonant frequency described in this embodiment is 13.56 MHz and is not limited to the resonant frequency of only 13.56 MHz. Due to the different characteristics of the antenna coil, the antenna coil with a resonant frequency of 13.56 MHz should be understood in a broad sense, referring to The antenna coil having a resonance frequency of around 13.56 MHz should belong to the antenna coil having a resonance frequency of 13.56 MHz as described in the present embodiment. For example, an antenna coil having a resonance frequency of 13.56 MHz ⁇ 7 KHz should belong to an antenna coil having a resonance frequency of 13.56 MHz as described in the present embodiment.
  • the carrier signal having a frequency of 125 kHz as described in this embodiment is not limited to a frequency of only 125 kHz, and a carrier signal having a frequency of 125 kHz is transmitted due to different characteristics of a device (for example, a read/write device) that transmits a carrier signal.
  • a device for example, a read/write device
  • the carrier signal with a frequency around 125 kHz should belong to the carrier signal with a frequency of 125 kHz as described in this embodiment.
  • an antenna with a frequency of 125 kHz and a carrier signal of ⁇ n KHz should belong to a carrier signal having a frequency of 125 kHz as described in this embodiment, where n is a preset value.
  • the amplification circuit 102 is required to amplify the carrier signal received by the antenna coil 101 to amplify the amplitude of the carrier signal so that the MCU 104 can identify the carrier signal.
  • the amplifying circuit 102 After amplifying the carrier signal, the amplifying circuit 102 inputs the amplified carrier signal (for example, a sine wave) to the analog-to-digital conversion circuit 103 for analog-to-digital conversion to form a digital signal (for example, a square wave), thereby obtaining a carrier signal.
  • the device sends information, which may include information indicating a preset format in response to the signal transceiving device, and may also include data sent to the signal transceiving device, which is not specifically limited in this embodiment.
  • the MCU 104 determines the start phase of the output coded signal according to the phase of the carrier signal transmitted by the sender, in order to enable the sender to easily detect the signal transmitted by the signal transceiving device,
  • the phase difference between the initial phase and the carrier signal can be made zero, so that the encoded signal and the carrier signal are completely coincident at the same phase, and the amplitude of the carrier signal is enhanced to facilitate acquisition by the device for transmitting the carrier signal.
  • the above-mentioned DC blocking circuit (including the first DC blocking circuit and the second DC blocking circuit) may be composed of one or more DC blocking capacitors, which is not limited in this embodiment.
  • the amplifying circuit 102 can be implemented with an amplifier and a load.
  • the resistance of the load can be set according to the multiple of the actual need to be amplified.
  • the analog-to-digital conversion circuit 103 can be implemented by an A/D sampling circuit or a voltage comparison circuit, and can be selected according to actual needs.
  • the signal transceiving device can also be connected to the transceiver circuit 107 electrically connected to both ends of the antenna coil 101 for receiving and transmitting a frequency of 13.56 MHz.
  • the signal is a 13.56 MHz card reader and card chip 108 electrically connected to the transceiver circuit 107 for analyzing the signal received by the transceiver circuit 107 and the signal transmitted by the code transceiver circuit 107.
  • the signal transceiving device is further provided with a signal transceiving circuit 107 having a transceiving frequency of 13.56 MHz, and a card reader and card chip 108 for parsing and encoding the received and transmitted signals having a frequency of 13.56 MHz. That is, in the alternative embodiment, the signal transceiving device has the following functions: a card reader with a frequency of 13.56 MHz, a chip card with a frequency of 13.56 MHz, and a chip card with a frequency of 125 KHz.
  • the function of the signal transceiving device can be extended, so that the 13.56 MHz card reader mode, the 13.56 MHz chip card mode, and the 125 KHz chip card mode can be integrated in the same device, and the three modes share the same antenna coil, saving cost.
  • the card reader and the card chip 108 may include three external interfaces: a 13.56 MHz frequency card reader transmission port, a 13.56 MHz frequency chip card transmission port, and a 13.56 MHz frequency receiving port, and a transceiver circuit.
  • 107 may include three branches: a 13.56 MHz frequency card reader transmitting branch, a 13.56 MHz frequency chip card transmitting branch, and a 13.56 MHz frequency receiving branch, one end of which is connected to the antenna coil 101 The two ends are electrically connected, and the other end of the 13.56 MHz frequency card reader transmitting branch is electrically connected with the card reader and the 13.56 MHz frequency card reader transmitting port of the card chip 108, and the 13.56 MHz frequency chip card transmitting branch is another.
  • One end is electrically connected to the chip card sending port of the 13.56 MHz frequency of the card reader and the card chip 108, and the other end of the chip card transmitting branch of the 13.56 MHz frequency is electrically connected to the card reader and the receiving port of the 13.56 MHz frequency of the card chip 108. . That is, in the above optional embodiment, the 13.56 MHz frequency card reader and the 13.56 MHz frequency chip card share the same receiving branch, and the transmitting branches are different.
  • a resonant circuit may be disposed in the signal transceiving device to improve the accuracy of signal transmission and reception.
  • the signal transceiving device may further include: a rectifying device 109, wherein the input ends are electrically connected to the two ends of the antenna coil 101, respectively. And receiving an alternating current signal output by the antenna coil 101, rectifying the alternating current signal, and outputting a direct current signal from an output end of the rectifying device 109.
  • the rectifying device 109 rectifies the alternating current and outputs a direct current signal that can be operated by the electronic device.
  • the signal transceiving device in the optional embodiment can also take power from the antenna coil 101 of the signal transceiving device while performing near field communication with other devices, and can be used for the signal transceiving device to work, or send and receive signals.
  • the built-in power supply of the device is charged to improve the utilization of the signal transceiving device.
  • the rectifying device 109 can be implemented by using a bridge circuit.
  • the bridge circuit that can be used by the rectifying device 109 is as shown in FIG. 3, and only two diode ports are connected.
  • the "bridge" structure has a full-wave rectifier circuit, and one end IB of the diode rectifier bridge is electrically connected to one end of the antenna coil 101, and the other end IA of the diode rectifier bridge is electrically connected to the other end of the antenna coil 101.
  • the present invention is not limited thereto.
  • the rectifying device 109 can also be implemented by other circuits, which is not limited in this embodiment.
  • the signal transceiving device may further include: a charging port 110 electrically connected to an output end of the rectifying device for acquiring electric energy from the rectifying device .
  • the signal transceiving device can use the DC signal output by the rectifying device 109 to charge the power source (for example, the DC power source 100) built in the signal transceiving device to improve the utilization of the signal transceiving device.
  • the signal transceiving device may further include: a switching device 111,
  • the switching device 111 is connected between the output of the rectifying device 109 and the charging port 110 for connecting or disconnecting the electrical connection between the rectifying device 109 and the charging port 110.
  • the switching device 111 can rectify the switching between the device 109 and the charging port 110 by the received control signal, and when receiving the control signal indicating the path between the switching rectifier 109 and the charging port 110, the switching device 111 turns off the rectification.
  • the path between the device 109 and the charging port 110 whereby the path between the rectifying device 109 and the charging port 110 is disconnected, and under the influence of no charging, the transmission and reception of the carrier signal of the antenna coil 101 can be ensured.
  • the switching device 111 can be implemented by an N-channel MOS transistor and a peripheral circuit.
  • FIG. 4 is a schematic diagram of a circuit structure of the switching device 111 according to the embodiment. As shown in FIG. 4, the switching device 111 includes The two NMOS transistors Q9 and Q12, Q9 control the Q12 to be turned off or connected through the antenna off or connected control port (ANT_OFF/DDC) input antenna off or communication signal, thereby making the path between the charging port T46 and the rectifying device 109 Disconnected or connected.
  • ANT_OFF/DDC antenna off or connected control port
  • FIG. 5 is a schematic circuit diagram of a signal transceiving device according to an embodiment of the present invention.
  • the amplifying circuit 102 includes an amplifier U7A, a capacitor C14, resistors R3 and R32, and a capacitor C15.
  • the analog-to-digital conversion circuit 104 includes a resistor R4. , voltage comparator U13 and capacitor C45.
  • DC power supply 100 is indicated by VCC.
  • VCC provides bias voltages for amplifier U7A and comparator U13 via bias resistors R19 and R28.
  • the reference voltage of comparator U13 can be based on the voltage at the bias point (ie, resistors R19 and R28).
  • the voltage of the connection point is determined, and the MCU 104 can determine the phase of the received carrier signal based on the voltage inversion point output by the comparator U13.
  • the first DC blocking circuit 106 is implemented by a capacitor C21
  • the second DC blocking circuit 105 is implemented by a capacitor C27
  • the antenna coil 101 is a coil A1.
  • the antenna coil 101 may further include a resistor R38 and a resistor R10.
  • the 13.58 MHz frequency chip card transmitting branch and the card reader transmitting branch of the signal transceiving device respectively include an inductor L2 and an inductor L3
  • the receiving branch of the 13.56 MHz frequency includes a resistor R11 and a capacitor C21, and TX1, TX2 and RX respectively Electrically connected to the external port of the card reader and the card chip 108, between the antenna card A1 and the 13.56 MHz frequency chip card transmission branch, the card reader transmission branch and the receiving branch, including capacitors C42, C41, C38
  • the resonant circuit composed of C23 and C43, the connection relationship between these capacitors is shown in Fig. 5, and will not be further described herein.
  • the antenna coil A1 receives the carrier signal having a frequency of 125 kHz
  • the carrier signal is amplified by the amplifier U7A, and then input to the voltage comparator U13, and the voltage comparator U13 is input.
  • the voltage is compared with the reference voltage, and the square wave signal is output according to the comparison result.
  • the MCU 104 can determine the actual frequency and phase of the received 125 KHz carrier signal according to the input square wave signal, and then encode the output signal to obtain and receive the signal.
  • the encoded signal of the actual frequency of the 125 KHz carrier signal is determined by the phase of the received carrier signal of 125 KHz, and the encoded signal is output from the transmitting port of the MCU 104, and the encoded signal is output through the capacitor C21.
  • the antenna coil A1 is further superimposed with the carrier signal, and the encoded signal is transmitted.
  • the antenna coil A1 receives the carrier signal with the frequency of 13.56 MHz, the carrier signal is input from the RX port to the card reader and the chip chip with the frequency of 13.56 MHz through R9 and C21. The chip recognizes the carrier signal, thereby identifying the carrier signal.
  • the carrier signal is a signal corresponding to the card reader or the chip, thereby determining the corresponding response signal, and transmitting the response signal through the corresponding transmitting branch. If the signal of the chip card is received, it is determined that the carrier signal is a signal corresponding to the chip card, the corresponding response data is determined, a response signal is formed, and the response signal is output to the antenna coil A1 through the transmitting branch L3 of the chip card. send.
  • an antenna coil with a resonant frequency of 13.56 MHz is used, and the received carrier signal with a frequency of 125 kHz is amplified by an amplifying circuit, so that the MCU can recognize the carrier with a received frequency of 125 kHz.
  • the signal is used to receive a carrier signal with a frequency of 125 kHz.
  • the MCU can analyze the frequency and phase of the carrier signal sent by the sender from the received carrier signal with a frequency of 125 kHz, and then encode the response signal through the antenna coil output and the transmitter with a resonant frequency of 13.56 MHz.
  • the frequency and phase matching number information of the transmitted carrier signal realizes transmission of a carrier signal having a frequency of 125 kHz through an antenna coil having a resonance frequency of 13.56 MHz.
  • the resonant frequency is 13.56 MHz of the antenna coil, it is possible to ensure that the RFID card is suitable for use on a small device.
  • the signal transceiver device can also be compatible with a reader with a frequency of 13.56 MHz and a chip card, thereby improving the integration degree of the device and saving the cost.
  • a signal transceiving device provided in this embodiment.
  • FIG. 6 is a schematic structural diagram of a signal transceiving device according to an embodiment of the present invention.
  • the signal transceiving device mainly includes: an antenna coil 201 with a resonant frequency of 13.56 MHz, an amplifying circuit 202, and an analog-to-digital conversion circuit 203.
  • the DC power supply 200 is electrically connected to the amplifying circuit 202, the analog-to-digital conversion circuit 203, the driving device, and the MCU 204, respectively, for the amplifying circuit 202, the analog-to-digital conversion circuit 203,
  • the driving device and the MCU 204 are powered;
  • the antenna coil 201 is configured to receive a carrier signal having a frequency of 125 kHz;
  • the second blocking circuit 205 has one end electrically connected to the antenna coil 201 and the other end
  • the input end of the amplifying circuit 202 is electrically connected to transmit the carrier signal to the amplifying circuit 202;
  • the amplifying circuit 202 has an input end electrically connected to the second blocking circuit 205 for
  • the carrier signal is amplified, and the amplified carrier signal is output from the output end of the amplifying circuit 202;
  • the analog-to-digital conversion circuit 203 has an input end electrically connected to an output end of the amplifying circuit 202, and is used for The carrier
  • the signal transceiving device provided in this embodiment differs from the signal transceiving device provided in Embodiment 1 in that, in Embodiment 1, the MCU 104 is actually based on the data to be output and the received carrier signal having a frequency of 125 kHz. The frequency and the phase directly output the number signal.
  • the MCU 204 outputs the control signal according to the actual frequency and phase of the carrier signal to be output and the received carrier signal having a frequency of 125 kHz, so that the output end of the driving device 207 outputs the encoded signal.
  • Embodiment 1 is applicable to the case where the operating voltage of the MCU enables the encoded signal output by the MCU to be recognized by the transmitting end of the carrier signal having a frequency of 125 kHz, and the present embodiment is applicable to the operating voltage of the MCU so that the encoded signal output by the MCU cannot be subjected to the frequency.
  • the voltage of the encoded signal is sufficiently large by the driving means 207, so that the transmitting end of the carrier signal having a frequency of 125 kHz can be recognized.
  • the driving device 207 can be implemented by the switching module 2071, and the switching module 2071 can include: a first end, a second end, and a control end.
  • the control terminal is an input end of the driving device 207, and is electrically connected to a transmitting port of the MCU 204; the first end is an output end of the driving device 207, and the first blocking is straight
  • the circuit 206 is electrically connected, and the first end is electrically connected to the DC power source; the second end is electrically connected to the ground end; and the on/off module 2071 is configured to be turned on under the control of the control signal output by the MCU 204.
  • the first end of the on/off module 2071 outputs a high level (a level of a positive end of the DC power supply) or a low level (a relative 0 Level), that is, the first end of the on/off module 2071 outputs a square wave signal whose frequency is the same as the actual frequency of the received carrier signal having a frequency of 125 kHz, and the square wave signal passes through the first blocking circuit 206.
  • Input to antenna coil 201, superimposed with carrier signal, enhanced load The amplitude of the wave signal allows the device transmitting the carrier signal to detect the data transmitted by the signal transceiving device.
  • the phase difference between the phase of the square wave signal and the received carrier signal having a frequency of 125 kHz is 0, so that the numbered signal and the carrier signal are completely coincident at the same phase, and the amplitude of the carrier signal is enhanced. It is convenient for device acquisition to send carrier signals.
  • the on/off module 2071 can be implemented by an N-channel or a P-channel MOS transistor, which is not limited in this embodiment.
  • an antenna coil with a resonant frequency of 13.56 MHz is used, and the received carrier signal with a frequency of 125 kHz is amplified by an amplifying circuit, so that the MCU can recognize the carrier with a received frequency of 125 kHz.
  • the signal is used to receive a carrier signal with a frequency of 125 kHz.
  • the MCU can analyze the frequency and phase of the carrier signal sent by the sender from the received carrier signal with a frequency of 125 kHz, and then encode the response signal, thereby controlling the driving device to pass the antenna coil with a resonant frequency of 13.56 MHz.
  • the number information matching the frequency and phase of the carrier signal transmitted by the sender is output, and a carrier signal having a frequency of 125 kHz is transmitted through an antenna coil having a resonance frequency of 13.56 MHz.
  • the resonant frequency is 13.56 MHz of the antenna coil, it is possible to ensure that the RFID card is suitable for use on a small device.
  • the signal transceiver device can also be compatible with a reader with a frequency of 13.56 MHz and a chip card, thereby improving the integration degree of the device and saving the cost.
  • FIG. 8 is a flowchart of a signal response method according to an embodiment of the present invention.
  • a signal response method according to an embodiment of the present invention includes:
  • an antenna having a resonant frequency of 13.56 MHz can be provided on a small device to prevent the antenna from being too large to be easily designed.
  • an antenna having a resonant frequency of 13.56 MHz is disposed on the signal response device, and the signal is transmitted and received through an antenna having a resonant frequency of 13.56 MHz.
  • the antenna with the resonant frequency of 13.56 MHz set by the present invention can also normally receive the carrier signal with the frequency of 13.56 MHz to implement the dual mode of the device.
  • the resonant frequency described in the embodiment of the present invention is 13.56 MHz, and is not limited to the resonant frequency of only 13.56 MHz. Due to the different characteristics of the antenna, an antenna with a resonant frequency of 13.56 MHz should be understood in a broad sense, referring to resonance. An antenna having a frequency of around 13.56 MHz should belong to an antenna having a resonant frequency of 13.56 MHz as described in the embodiment of the present invention. For example, an antenna having a resonant frequency of 13.56 MHz ⁇ 7 kHz should belong to the antenna having a resonant frequency of 13.56 MHz as described in the present invention. .
  • the frequency described in the embodiment of the present invention is 125 kHz, and the frequency is only 125 kHz. Since the characteristics of the device (such as a read/write device) for transmitting a carrier signal are different, the carrier signal whose frequency is 125 kHz should also be transmitted. It is understood in a broad sense that the carrier signal having a frequency of around 125 kHz should belong to the carrier signal of the frequency of 125 kHz as described in the embodiment of the present invention. For example, an antenna having a carrier signal of ⁇ 1 kHz at a frequency of 125 kHz should belong to the present invention. A carrier signal having a frequency of 125 kHz, where n is a preset value.
  • the amplitude of the carrier signal received by the signal response device through the antenna having the resonant frequency of 13.56 MHz is small. Not enough to be recognized by the signal response device. Therefore, it is necessary to amplify the carrier signal received by the signal response device to amplify the amplitude of the carrier signal so that the signal response device can recognize the carrier signal.
  • the amplification of the carrier signal can be implemented by using an amplifier and a peripheral circuit.
  • the signal response device After amplifying the carrier signal, the signal response device performs analog-to-digital conversion on the amplified carrier signal (for example, a sine wave) to form a digital signal (for example, a square wave), so that the device transmitting the carrier signal can obtain the information, and the information can be
  • the information including the preset format indicating the response of the signal response device may also include data transmitted to the signal response device, which is not specifically limited in the present invention.
  • the analog-to-digital conversion of the amplified carrier signal may be implemented by using a comparator and a peripheral circuit, or may be implemented by using an A/D sampling circuit, which is not specifically limited in the present invention, as long as it can be amplified.
  • the implementation of the subsequent carrier signal to perform analog-to-digital conversion to obtain a digital signal should fall within the protection scope of the present invention.
  • the signal response device receives the carrier signal transmitted by the device transmitting the carrier signal, and needs to acquire the carrier signal transmitted by the signal carrier device.
  • a signal characteristic that includes at least the frequency and phase of the carrier signal. After the signal response device acquires the signal characteristics of the received carrier signal, the characteristics of the device for transmitting the carrier signal with which the information is exchanged may be known, and the information may be transmitted to the transmission carrier signal according to the same characteristics as the device transmitting the carrier signal. The device to complete the information interaction.
  • the frequency of the carrier signal transmitted by the device transmitting the carrier signal is 125.3 KHz, and after receiving the carrier signal, the signal response device acquires the carrier signal at a frequency of 125.3 KHz, so that the signal response device subsequently adopts a response with a frequency of 125.3 KHz.
  • the signal is responsive to the device transmitting the carrier signal.
  • the signal response device when the analog-to-digital conversion of the amplified carrier signal can be implemented by using a comparator and a peripheral circuit, the signal response device can determine the characteristics of the carrier signal by using a square wave output by the comparator; when performing the amplified carrier signal When the analog-to-digital conversion is implemented by the A/D sampling circuit, the signal response device can determine the characteristics of the carrier signal by sampling the sine wave.
  • the signal response device in response to the device for transmitting the carrier signal, needs to encode at the same frequency as the carrier signal, and transmit the encoded signal at the same phase as the carrier signal to ensure that the encoded signal and the carrier signal are superimposed at the same phase, enhancing The amplitude of the carrier signal is such that the means for transmitting the carrier signal can be acquired, thereby completing the transmission of information by the signal responsive device to the device transmitting the carrier signal.
  • the phase difference between the initial phase and the carrier signal is 0, so that the encoded signal and the carrier signal are completely coincident at the same phase, and the amplitude of the carrier signal is enhanced to facilitate acquisition by the device for transmitting the carrier signal.
  • a small-sized antenna with a resonant frequency of 13.56 MHz can transmit and receive a signal having a frequency of 125 kHz to achieve a miniaturization of the device.
  • the response data is a unique identification number.
  • the device transmitting the carrier signal can read and write the device, such as a card reader, and the signal response device can respond to the card reader as an ID card.
  • the unique identification number may be an ID number, such as an ID number.
  • FIG. 9 is a schematic structural diagram of a signal response apparatus according to an embodiment of the present invention.
  • a signal response apparatus 90 includes: a receiving module 901, configured to utilize a resonant frequency The 13.56 MHz antenna receives a carrier signal having a frequency of 125 kHz; the signal processing module 902 is configured to amplify the carrier signal, and perform analog-to-digital conversion on the amplified signal to obtain a digital signal; and the signal characteristic obtaining module 903 is configured to The signal acquires a signal characteristic of the carrier signal, the signal characteristic includes at least: a frequency and a phase; the output module 904 is configured to encode the response data by frequency to obtain a coded signal, and determine a starting phase of the output coded signal according to the phase, and output through the antenna.
  • the signal is encoded such that the encoded signal is superimposed at the same phase as the carrier signal.
  • an antenna having a resonant frequency of 13.56 MHz can be provided on a small device to prevent the antenna from being too large to be easily designed.
  • an antenna having a resonance frequency of 13.56 MHz is disposed on the signal response device 90, and signals are transmitted and received through an antenna having a resonance frequency of 13.56 MHz.
  • the antenna with the resonant frequency of 13.56 MHz set by the present invention can also normally receive the carrier signal with the frequency of 13.56 MHz to implement the dual mode of the device.
  • the resonant frequency described in the embodiment of the present invention is 13.56 MHz, and is not limited to the resonant frequency of only 13.56 MHz. Due to the different characteristics of the antenna, an antenna with a resonant frequency of 13.56 MHz should be understood in a broad sense, referring to resonance. An antenna having a frequency of around 13.56 MHz should belong to an antenna having a resonant frequency of 13.56 MHz as described in the embodiment of the present invention. For example, an antenna having a resonant frequency of 13.56 MHz ⁇ 7 kHz should belong to the antenna having a resonant frequency of 13.56 MHz as described in the present invention. .
  • the frequency described in the embodiment of the present invention is 125 kHz, and the frequency is only 125 kHz. Since the characteristics of the device (such as a read/write device) for transmitting a carrier signal are different, the carrier signal whose frequency is 125 kHz should also be transmitted. It is understood in a broad sense that the carrier signal having a frequency of around 125 kHz should belong to the carrier signal of the frequency of 125 kHz as described in the embodiment of the present invention. For example, an antenna having a carrier signal of ⁇ 1 kHz at a frequency of 125 kHz should belong to the present invention. A carrier signal having a frequency of 125 kHz, where n is a preset value.
  • the receiving module 901 Since the frequency of the carrier signal transmitted by the device transmitting the carrier signal is 125 kHz, and the receiving module 901 adopts the antenna with the resonant frequency of 13.56 MHz, the amplitude of the carrier signal received by the antenna with the resonant frequency of 13.56 MHz is small, which is insufficient to be signaled.
  • the response device 90 recognizes that, therefore, the signal processing module 902 is required to amplify the carrier signal received by the signal response device 90 to amplify the amplitude of the carrier signal such that the signal response device 90 can identify the carrier signal.
  • the signal processing module 902 After amplifying the carrier signal, the signal processing module 902 performs analog-to-digital conversion on the amplified carrier signal (for example, a sine wave) to form a digital signal (for example, a square wave), so that the device transmitting the carrier signal can be obtained, and the information is obtained.
  • the information indicating the preset format in response to the signal response device 90 may be included, and may also include data transmitted to the signal response device 90, which is not specifically limited in the present invention.
  • the signal processing module 902 includes at least an amplifier and a comparator, or the signal processing module includes at least an amplifier and a sampling circuit.
  • the specific implementation form of the signal processing module 902 is not specifically limited in the present invention. As long as the carrier signal can be amplified, and the amplified carrier signal is analog-to-digital converted to obtain a digital signal, the implementation manner should belong to the protection scope of the present invention.
  • the signal response device 90 receives the carrier signal transmitted by the device transmitting the carrier signal, and needs to acquire the signal of the carrier signal transmitted by the signal response device 90.
  • the signal characteristic includes at least the frequency and phase of the carrier signal.
  • the receiving module 901 After receiving the carrier signal, the receiving module 901 receives the carrier signal, and the signal characteristic acquiring module 903 acquires the carrier signal at a frequency of 125.3 kHz. Therefore, the signal response device 90 subsequently responds to the device transmitting the carrier signal with a response signal having a frequency of 125.3 kHz.
  • the signal characteristic obtaining module 903 can determine the characteristics of the carrier signal by using a square wave output by the comparator; when the amplified carrier is used When the analog-to-digital conversion of the signal is implemented by the A/D sampling circuit, the signal characteristic obtaining module 903 can determine the characteristics of the carrier signal by sampling the sine wave.
  • the output module 904 of the signal response device 90 needs to encode at the same frequency as the carrier signal and transmit the encoded signal at the same phase as the carrier signal to ensure that the encoded signal is in the same phase as the carrier signal.
  • the amplitude of the carrier signal is enhanced, so that the device transmitting the carrier signal can be acquired, thereby completing the information transmission by the signal response device 90 to the device transmitting the carrier signal.
  • the phase difference between the initial phase and the carrier signal is 0, so that the encoded signal and the carrier signal are completely coincident at the same phase, and the amplitude of the carrier signal is enhanced to facilitate acquisition by the device for transmitting the carrier signal.
  • an antenna having a small resonant frequency of 13.56 MHz can be used to transmit and receive a signal having a frequency of 125 kHz to achieve a miniaturization of the device.
  • the response data is a unique identification number.
  • the device transmitting the carrier signal can read and write the device, such as a card reader, and the signal response device 90 can respond to the card reader as an ID card.
  • the unique identification number may be an ID number, such as an ID number.
  • FIG. 10 is a schematic structural diagram of a signal response system according to an embodiment of the present invention.
  • a signal response system according to an embodiment of the present invention includes a read/write device 10 and a signal response device 90;
  • the device 90 is the above-mentioned signal response device, and details are not described herein.
  • the read/write device 10 is configured to transmit a carrier signal having a frequency of 125 kHz and receive the encoded signal.
  • the signal response system provided by the embodiment of the invention can realize information interaction while ensuring miniaturization of the device.

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Abstract

本发明提供一种读卡响应方法、装置及系统、信号收发设备，其中该方法包括：方法包括：利用谐振频率为 13.56MHz 的天线接收频率为 125KHz的载波信号；对载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；根据数字信号获取载波信号的信号特性，信号特性至少包括：频率以及相位；将响应数据以频率进行编码，得到编码信号，并根据相位确定输出编码信号的起始相位，通过天线输出编码信号，使编码信号与载波信号在相同相位处叠加。通过本发明的信号响应方法、装置及系统，可以利用体积较小的谐振频率为 13.56MHz 的天线收发频率为125KHz 的信号，以实现设备小型化的需求。

Description

读卡响应方法、装置及系统、信号收发设备
相关申请的交叉引用
本申请基于申请号为201710058115.X，申请日为2017年01月23日，发明名称为一种信号收发设备、以及申请号为201710058100.3，申请日为2017年01月23日，发明名称为读卡响应方法、装置及系统的中国专利申请提出，并要求这两件中国专利申请的优先权，这两件中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及一种电子技术领域，尤其涉及一种读卡响应方法、装置及系统、信号收发设备。
背景技术
目前，为提高用户体验，RFID(Radio Frequency Identification，射频标签)卡越来越追求微型化，对于谐振频率为125KHz的RFID卡来说，由于频率比较低，为了使读卡时，RFID卡能够获取到足够的能量以及幅度足够大的信号，需要配备较大尺寸的天线，以使RFID卡可以正常工作。但是由于125KHz的天线较大，不适合小型设备的使用，因此，如何既能使频率为12KHz的RFID卡能够正常工作又能使RFID卡适合在小型设备上使用是目前迫切需要解决的问题。
发明内容
本发明旨在解决上述问题。
为达到上述目的，本发明的技术方案具体是这样实现的：
本发明一方面提供了一种信号收发设备，包括：谐振频率为13.56MHz的天线线圈、放大电路、模数转换电路、第一隔直电路、第二隔直电路、直流电源以及微控制单元MCU，其中：所述直流电源分别与所述放大电路、所述模数转换电路以及所述MCU电连接，用于为所述放大电路、所述模数转换电路以及所述MCU供电；所述天线线圈，用于接收频率为125KHz的载波信号；所述第二隔直电路，其一端与所述天线线圈电连接，另一端与所述放大电路的输入端电连接，用于将所述载波信号传输至所述放大电路；所述放大电路，其输入端与所述第二隔直电路电连接，用于对所述载波信号进行放大，将放大后的载波信号从所述放大电路的输出端输出；所述模数转换电路，其输入端与所述放大电路的输出端电连接，用 于对经所述放大电路放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路的输出端输出；所述MCU，其接收端口与所述模数转换电路的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，并根据所述相位确定输出所述编码信号的起始相位，从所述MCU的发送端口输出所述编码信号；所述第一隔直电路，其一端与所述MCU的发送端口电连接，另一端与所述天线线圈电连接，用于将所述编码信号传输至所述天线线圈发送。
本发明另一方面，提供了另一种信号收发设备，包括：谐振频率为13.56MHz的天线线圈、放大电路、模数转换电路、第一隔直电路、驱动装置、第二隔直电路、直流电源以及微控制单元MCU，其中：所述直流电源分别与所述放大电路、所述模数转换电路、所述驱动装置以及所述MCU电连接，用于为所述放大电路、所述模数转换电路、所述驱动装置以及所述MCU供电；所述天线线圈，用于接收频率为125KHz的载波信号；所述第二隔直电路，其一端与所述天线线圈电连接，另一端与所述放大电路的输入端电连接，用于将所述载波信号传输至所述放大电路；所述放大电路，其输入端与所述第二隔直电路电连接，用于对所述载波信号进行放大，将放大后的载波信号从所述放大电路的输出端输出；所述模数转换电路，其输入端与所述放大电路的输出端电连接，用于对经所述放大电路放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路的输出端输出；所述MCU，其接收端口与所述模数转换电路的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，根据所述相位确定输出所述编码信号的起始相位，并根据所述编码信号及起始相位从所述MCU的发送端口输出控制信号；所述驱动装置，其输入端与所述MCU的发送端口电连接，输出端与所述第一隔直电路电连接，用于在所述控制信号的控制下，从所述驱动装置的所述输出端输出所述编码信号；所述第一隔直电路，其一端与所述驱动装置的输出端电连接，另一端与所述天线线圈电连接，用于将所述编码信号传输至所述天线线圈发送。
可选地，所述驱动装置，包括：通断模块，包括：第一端、第二端和控制端，其中，所述控制端为所述驱动装置的输入端，与所述MCU的发送端口电连接；所述第一端为所述驱动装置的输出端，与所述第一隔直电路电连接，且所述第一端与直流电源电连接；所述第二端与地端电连接；所述通断模块用于在所述控制信号的控制下导通或断开所述第一端与所述第二端之间的电连接。
可选地，所述模数转换电路包括：A/D采样电路或电压比较电路。
可选地，还包括：与所述天线线圈的两端分别电连接的收发电路，用于接收和发送频率 为13.56MHz的信号；与所述收发电路电连接的频率为13.56MHz的读卡器及卡芯片，用于解析所述收发电路接收到的信号，以及编码所述收发电路发送的信号。
可选地，还包括：整流装置，其输入端分别与所述天线线圈的两端电连接，用于接收所述天线线圈输出的交流信号，对所述交流信号进行整流，从所述整流装置的输出端输出直流信号。
可选地，还包括：充电端口，与所述整流装置的输出端电连接，用于从所述整流装置获取电能。
可选地，还包括：切换装置，电连接在所述整流装置的输出端与所述充电端口之间，用于连通或断开所述整流装置与所述充电端口之间的电连接。
本发明又一方面提供了一种信号响应方法，包括：利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号；对载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；根据数字信号获取载波信号的信号特性，信号特性至少包括：频率以及相位；将响应数据以频率进行编码，得到编码信号，并根据相位确定输出编码信号的起始相位，通过天线输出编码信号，使编码信号与载波信号在相同相位处叠加。
此外，起始相位与载波信号的相位差为0。
此外，响应数据为唯一识别号。
本发明再一方面提供了一种信号响应装置，包括：接收模块，用于利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号；信号处理模块，用于对载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；信号特性获取模块，用于根据数字信号获取载波信号的信号特性，信号特性至少包括：频率以及相位；输出模块，用于将响应数据以频率进行编码，得到编码信号，并根据相位确定输出编码信号的起始相位，通过天线输出编码信号，使编码信号与载波信号在相同相位处叠加。
此外，起始相位与载波信号的相位差为0。
此外，响应数据为唯一识别号。
此外，信号处理模块至少包括放大器和比较器，或者信号处理模块至少包括放大器以及采样电路。
本发明又一方面提供了一种信号响应系统，包括读写装置以及上述的信号响应装置；读写装置，用于发送频率为125KHz的载波信号，并接收编码信号。
由上述本发明提供的技术方案可以看出，本发明提供了一种信号收发设备，该信号收发设备采用谐振频率为13.56MHz的天线线圈，通过放大电路对接收到的频率为125KHz的载 波信号进行放大，从而使得MCU可以识别出接收到的频率为125KHz的载波信号，实现对频率为125KHz的载波信号的接收。进一步地，MCU可以从接收到的频率为125KHz的载波信号中分析出发送方发送的载波信号的频率和相位，进而可以对响应信号进行编码，通过谐振频率为13.56MHz的天线线圈输出与发送方发送的载波信号的频率和相位匹配的编号信息，实现通过谐振频率为13.56MHz的天线线圈发送频率为125KHz的载波信号。另外，由于谐振频率为13.56MHz的天线线圈，因此，可以保证RFID卡适合在小型设备上使用。另外，通过本发明的信号响应方法、装置及系统，可以利用体积较小的谐振频率为13.56MHz的天线收发频率为125KHz的信号，以实现设备小型化的需求。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他附图。
图1为本发明实施例1提供的一种信号收发设备的结构示意图；
图2为本发明实施例1提供的另一种信号收发设备的结构示意图；
图3为本发明实施例1提供的一种整流装置的电路结构示意图；
图4为本发明实施例1提供的一种切换装置的电路结构示意图；
图5为本发明实施例1提供的一种信号收发设备的电路原理图；
图6为本发明实施例2提供的一种信号收发设备的结构示意图；
图7为本发明实施例2提供的另一种信号收发设备的结构示意图；
图8为本发明实施例3提供的信号响应方法的流程图；
图9为本发明实施例4提供的信号响应装置的结构示意图；以及
图10为本发明实施例5提供的信号响应系统的结构示意图。
具体实施方式
下面结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明的保护范围。
下面将结合附图和实施例对本发明进行详细描述。
实施例1
本实施例提供了一种信号收发设备。
图1为本实施例提供的一种信号收发设备的结构示意图，如图1所示，该信号收发设备主要包括：谐振频率为13.56MHz的天线线圈101、放大电路102、模数转换电路103、第一隔直电路106、第二隔直电路105、直流电源100以及微控制单元MCU 104。
下面对本实施例提供的信号收发设备的各个部件的连接关系及功能进行说明。
直流电源100分别与放大电路102、模数转换电路103以及MCU 104电连接，用于为放大电路102、模数转换电路103以及MCU 104供电；天线线圈101，用于接收频率为125KHz的载波信号；第二隔直电路105，其一端与天线线圈101电连接，另一端与放大电路102的输入端电连接，用于将载波信号传输至放大电路102；放大电路102，其输入端与第二隔直电路105电连接，用于对天线线圈101接收到的频率为125KHz的载波信号进行放大，将放大后的载波信号从放大电路102的输出端输出；模数转换电路103，其输入端与所述放大电路102的输出端电连接，用于对经所述放大电路102放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路103的输出端输出；MCU 104，其接收端口与所述模数转换电路103的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，并根据所述相位确定输出所述编码信号的起始相位，从所述MCU 104的发送端口输出所述编码信号；第一隔直电路106，其一端与所述MCU 104的发送端口电连接，另一端与所述天线线圈101电连接，用于将所述编码信号传输至所述天线线圈101发送。
在本实施例中，由于谐振频率13.56MHz的天线线圈比谐振频率为125KHz的天线线圈体积小，因此，可以在小型设备上设置谐振频率为13.56MHz的天线线圈，以防止由于天线线圈过大而不易于小型化设计，因此，本实施例在信号收发设备上设置谐振频率为13.56MHz的天线线圈，通过谐振频率为13.56MHz的天线线圈进行信号的收发。另外，为了使得信号收发设备能够识别出，本实施例提供的信号收发设备中设置有放大电路102，对天线线圈101接收到的频率为125KHz的载波信号进行放大，经放大后的载波信号通过模数转换电路103将载波信号转换为数字信号，从而使得MCU 104可以对输入的数据信号进行识别，可以获取到发送方发送的载波信号的频率和相位，然后MCU 104采用主动地方式向发送方返回响应数据(即上述的待输出数据)，在编码响应数据时，MCU 104采用获取的频率对响应数据进行编码，并按照发送发送的载波信号的相位确定输出编码信号的起始相位，通过第一隔直电路106将编码传输至天线线圈101发送。
在本发明实施例的一个可选实施方案中，MCU 104发送的响应数据可以是RFID卡的唯 一识别号，例如，RFID标签的唯一电子编码等。
本实施例中，为了使放大电路102、模数转换电路103及MCU 104可以正常工作，信号收发设备中设置有直流电源100。另外，为了避免直流电源100的电信号对天线线圈101收发信号造成影响，在本实施例中，在MCU 104与天线线圈101之间设置了第一隔直电路106，在放大电路102与天线线圈101之间设置了第二隔直电路105，从而使得直流电信号无法传输到天线线圈101，进而避免了直流电源100的直流电信号对天线线圈101的收发信号的影响。
值得说明的是，本实施例所记载的谐振频率为13.56MHz并不局限于谐振频率仅为13.56MHz，由于天线线圈的特性不同，谐振频率为13.56MHz的天线线圈应被广义理解，指的是谐振频率在13.56MHz附近的天线线圈均应属于本实施例记载的谐振频率为13.56MHz的天线线圈。例如，谐振频率为13.56MHz±7KHz的天线线圈均应属于本实施例所记载的谐振频率为13.56MHz的天线线圈。同样的，本实施例所记载的频率为125KHz的载波信号并不局限于频率仅为125KHz，由于发送载波信号的装置(例如读写装置等)的特性不同，其发送的频率为125KHz的载波信号也应被广义理解，指的是频率在125KHz附近的载波信号均应属于本实施例记载的频率为125KHz的载波信号。例如，频率为125KHz的载波信号±n KHz的天线均应属于本实施例所记载的频率为125KHz的载波信号，其中n为预设值。
由于发送载波信号的装置发送的载波信号的频率为125KHz，而天线线圈101采用谐振频率为13.56MHz，通过谐振频率为13.56MHz的天线收到的载波信号的幅度较小，不足以被信号收发设备识别，因此，需要放大电路102对天线线圈101接收到的载波信号进行放大，以放大载波信号的幅度，使得MCU 104可以识别该载波信号。放大电路102在将载波信号放大后，将放大后的载波信号(例如正弦波)输入到模数转换电路103进行模数转换，以形成数字信号(例如方波)，从而可以得到发送载波信号的装置发送信息，该信息可以包括指示信号收发设备进行响应的预设的格式的信息，也可以包括向信号收发设备发送的数据，这在本实施例中并不做具体限制。
在本发明实施例的一个可选实施方案中，MCU 104在根据发送方发送的载波信号的相位确定输出编码信号的起始相位时，为了使发送方使容易检测到信号收发设备发送的信号，可以使得起始相位与所述载波信号的相位差为0，从而使得编码信号与载波信号在相同相位处完全重合的叠加，增强载波信号的幅度，方便发送载波信号的装置获取。
在本实施例中，上述的隔直电路(包括上述第一隔直电路和第二隔直电路)可以是由一个或多个隔直电容器组成，具体本实施例不作限定。
在本发明实施例的一个可选实施方案中，放大电路102可以采用放大器及负载实现。在 具体应用中，可以根据实际需要放大的倍数，设置负载的阻值。
在本发明实施例的一个可选实施方案中，模数转换电路103可以通过A/D采样电路或电压比较电路实现，具体可以根据实际需要进行选择。
在本发明实施例的一个可选实施方案中，如图2所示，该信号收发设备还可以与天线线圈101的两端分别电连接的收发电路107，用于接收和发送频率为13.56MHz的信号；与收发电路107电连接的频率为13.56MHz的读卡器及卡芯片108，用于解析收发电路107接收到的信号，以及编码收发电路107发送的信号。在该可选实施方式中，信号收发设备还设置有收发频率为13.56MHz的信号收发电路107，以及解析及编码接收和发送的频率为13.56MHz的信号的读卡器及卡芯片108。即在该可选实施方式中，信号收发设备同时具备以下功能：频率为13.56MHz的读卡器、频率为13.56MHz的芯片卡、以及频率为125KHz的芯片卡。通过该可选实施方式，可以扩展信号收发设备的功能，使得13.56MHz读卡器模式、13.56MHz芯片卡模式以及125KHz芯片卡模式可以集成在同一设备中，三种模式共用同一天线线圈，节约了成本。
在上述可选实施方式中，读卡器及卡芯片108可以包括三个对外接口：13.56MHz频率的读卡器发送端口、13.56MHz频率的芯片卡发送端口及13.56MHz频率的接收端口，收发电路107可以包括三个支路：13.56MHz频率的读卡器发送支路、13.56MHz频率的芯片卡发送支路以及13.56MHz频率的接收支路，这三个支路的一端均与天线线圈101的两端电连接，13.56MHz频率的读卡器发送支路的另一端与读卡器及卡芯片108的13.56MHz频率的读卡器发送端口电连接，13.56MHz频率的芯片卡发送支路的另一端与读卡器及卡芯片108的13.56MHz频率的芯片卡发送端口电连接，13.56MHz频率的芯片卡发送支路的另一端与读卡器及卡芯片108的13.56MHz频率的接收端口电连接。即在上述可选实施方式中，13.56MHz频率的读卡器和13.56MHz频率的芯片卡共用同一接收支路，而发送支路不同。
在本发明实施例的一个可选实施方案中，为了使得13.56MHz频率信号收发更加精准，信号收发设备中还可以设置一个谐振电路，以提高信号收发的精准度。
在本发明实施例的一个可选实施方案中，为了充分利用资源，如图2所示，信号收发设备还可以包括：整流装置109，其输入端分别与所述天线线圈101的两端电连接，用于接收所述天线线圈101输出的交流信号，对所述交流信号进行整流，从所述整流装置109的输出端输出直流电信号。在本实施例中，整流装置109对交流电进行整流后输出可以供电子设备工作的直流电信号。由此，该可选实施例中的信号收发设备在与其他设备进行近场通讯的同时，还可以从该信号收发设备的天线线圈101中取电，可以供信号收发设备工作，或对信号收发设备内置的电源进行充电，从而提高信号收发设备的利用率。
在具体应用中，整流装置109可以采用桥电路实现，在本实施例的一种可选实施方式中，整流装置109可以采用的桥电路如图3所示，只要增加两只二极管口连接成的"桥"式结构，便具有全波整流电路，该二级管整流桥的一端IB与天线线圈101的一端电连接，该二级管整流桥的另一端IA与天线线圈101的另一端电连接。当然，并不限于此，在实际应用中，整流装置109也可以采用其它的电路实现，具体本实施例中并不作限定。
在本发明实施例的一个可选实施方案中，如图2所示，信号收发设备还可以包括：充电端口110，与所述整流装置的输出端电连接，用于从所述整流装置获取电能。在该可选实施方式中，信号收发设备的可以利用整流装置109输出的直流电信号对信号收发设备内置的电源(例如，直流电源100)进行充电，以提高信号收发设备的利用率。
在本发明实施例的一个可选实施方案中，如图2所示，为了克服避免取电对外部设备与信号收发设备之间的通信造成影响，信号收发设备还可以包括：切换装置111，该切换装置111连接在整流装置109的输出端与充电端口110之间，用于连通或断开整流装置109与充电端口110之间的电连接。切换装置111可以通过接收的控制信号来整流装置109与充电端口110之间的通断，当接收到表示切断整流装置109与充电端口110之间的通路的控制信号时，切换装置111断开整流装置109与充电端口110之间的通路，由此，具整流装置109与充电端口110之间的通路被断开，在没有充电的影响下，从而可以保证天线线圈101的载波信号的收发。
在具体实施过程中，切换装置111可以通过N沟道MOS管及外围电路来实现，图4为本实施例提供的一种切换装置111的电路结构示意图，如图4所示，切换装置111包括两个NMOS管Q9和Q12，Q9通过天线关断或连通的控制端口(ANT_OFF/DDC)输入天线关断或连通信号控制Q12关断或连通，从而使得充电口T46与整流装置109之间的通路断开或连通。
图5为本实施例提供的一种信号收发设备的电路原理图，在图5中，放大电路102包括放大器U7A、电容器C14、电阻R3、R32以及电容器C15，模数转换电路104包括：电阻R4、电压比较器U13以及电容器C45。在图5中以VCC指示直流电源100，VCC经过偏置电阻R19和R28为放大器U7A和比较器U13提供偏置电压，比较器U13的参考电压可以根据偏置点的电压(即电阻R19和R28的连接点的电压)确定，MCU 104可以根据比较器U13输出的电压翻转点确定接收到的载波信号的相位。第一隔直电路106通过电容器C21实现，第二隔直电路105通过电容器C27实现，天线线圈101为线圈A1，可选地，天线线圈101还可以包括电阻R38和电阻R10。另外，信号收发设备的13.56MHz频率的芯片卡发送支路及读卡器发送支路分别包括电感L2和电感L3，13.56MHz频率的接收支路包括电阻 R11和电容器C21，TX1、TX2和RX分别与读卡器及卡芯片108的对外端口电连接，在天线线圈A1与13.56MHz频率的芯片卡发送支路、读卡器发送支路及接收支路之间，包括由电容器C42、C41、C38、C23及C43组成的谐振电路，这些电容器之间的连接关系参见图5，在此不再一一赘述。
在图5所示的信号收发设备中，当天线线圈A1接收到频率为125KHz的载波信号时，该载波信号通过放大器U7A进行幅度放大，然后再输入到电压比较器U13，电压比较器U13将输入的电压与参考电压进行比较，根据比较结果输出方波信号，MCU 104根据输入的方波信号可以确定接收到的125KHz的载波信号的实际频率及相位，进而对待输出信号进行编码，得到与接收到的125KHz的载波信号的实际频率一致的编码信号，再按照接收到的125KHz的载波信号的相位确定编码信号的起始相位，从MCU 104的发送端口输出所述编码信号，编码信号经电容器C21输出至天线线圈A1，进而与载波信号叠加，发送该编码信号。当天线线圈A1接收到频率为13.56MHz的载波信号时，载波信号经R9及C21从RX端口输入到频率为13.56MHz的读卡器及卡芯片，芯片对该载波信号进行识别，从而识别出该载波信号是与读卡器还是芯片对应的信号，进而确定相应的响应信号，通过相应的发送支路发送响应信号。如果接收到的是芯片卡的信号，则确定该载波信号是与芯片卡对应的信号，确定相应的响应数据，形成响应信号，再通过芯片卡的发送支路L3将响应信号输出至天线线圈A1发送。
通过本实施例提供的信号收发设备，采用谐振频率为13.56MHz的天线线圈，通过放大电路对接收到的频率为125KHz的载波信号进行放大，从而使得MCU可以识别出接收到的频率为125KHz的载波信号，实现对频率为125KHz的载波信号的接收。进一步地，MCU可以从接收到的频率为125KHz的载波信号中分析出发送方发送的载波信号的频率和相位，进而可以对响应信号进行编码，通过谐振频率为13.56MHz的天线线圈输出与发送方发送的载波信号的频率和相位匹配的编号信息，实现通过谐振频率为13.56MHz的天线线圈发送频率为125KHz的载波信号。另外，由于谐振频率为13.56MHz的天线线圈，因此，可以保证RFID卡适合在小型设备上使用。另外，该信号收发设备还可以兼容频率为13.56MHz的读卡器及芯片卡，提高了设备的集成程度，节约了成本。
实施例2
本实施例提供的一种信号收发设备。
图6为本实施例提供的一种信号收发设备的结构示意图，如图6所示，该信号收发设备主要包括：谐振频率为13.56MHz的天线线圈201、放大电路202、模数转换电路203、第一隔直电路206、驱动装置、第二隔直电路205、直流电源200以及微控制单元MCU 204。
下面对本实施例提供的信号收发设备的各个部件的连接关系及功能进行说明。
所述直流电源200分别与所述放大电路202、所述模数转换电路203、所述驱动装置以及所述MCU 204电连接，用于为所述放大电路202、所述模数转换电路203、所述驱动装置以及所述MCU 204供电；所述天线线圈201，用于接收频率为125KHz的载波信号；所述第二隔直电路205，其一端与所述天线线圈201电连接，另一端与所述放大电路202的输入端电连接，用于将所述载波信号传输至所述放大电路202；所述放大电路202，其输入端与所述第二隔直电路205电连接，用于对所述载波信号进行放大，将放大后的载波信号从所述放大电路202的输出端输出；所述模数转换电路203，其输入端与所述放大电路202的输出端电连接，用于对经所述放大电路202放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路203的输出端输出；所述MCU 204，其接收端口与所述模数转换电路203的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，根据所述相位确定输出所述编码信号的起始相位，并根据所述编码信号及起始相位从所述MCU 204的发送端口输出控制信号；所述驱动装置207，其输入端与所述MCU 204的发送端口电连接，输出端与所述第一隔直电路206电连接，用于在所述控制信号的控制下，从所述驱动装置的所述输出端输出所述编码信号；所述第一隔直电路206，其一端与所述驱动装置的输出端电连接，另一端与所述天线线圈201电连接，用于将所述编码信号传输至所述天线线圈201发送。
由此可见，本实施例中提供的信号收发设备与实施例1提供的信号收发设备的区别在于：在实施例1中，MCU 104根据待输出数据及接收到的频率为125KHz的载波信号的实际频率及相位直接输出编号信号，而本实施例中，MCU 204根据待输出数据及接收到的频率为125KHz的载波信号的实际频率及相位输出控制信号，使驱动装置207的输出端输出编码信号。实施例1适用于MCU的工作电压使得MCU输出的编码信号能够被频率为125KHz的载波信号的发送端识别的情况，而本实施例适用于MCU的工作电压使得MCU输出的编码信号不能被频率为125KHz的载波信号的发送端识别的情况，通过驱动装置207使得编码信号的电压足够大，进而使得频率为125KHz的载波信号的发送端能够识别。
下面主要对本实施例的信号收发设备相对于实施例1的信号收发设备的区别点进行说明，其它部分可以参见实施例1的描述，在此不再赘述。
在本发明实施例的一个可选实施方案中，如图7所示，所述驱动装置207可以通过通断模块2071来实现，通断模块2071可以包括：第一端、第二端和控制端，其中，所述控制端为所述驱动装置207的输入端，与所述MCU 204的发送端口电连接；所述第一端为所述驱 动装置207的输出端，与所述第一隔直电路206电连接，且所述第一端与直流电源电连接；所述第二端与地端电连接；所述通断模块2071用于在所述MCU 204输出的控制信号的控制下导通或断开所述第一端与所述第二端之间的电连接，从而使得通断模块2071的第一端输出高电平(直流电源正端的电平)或低电平(相对的0电平)，即通断模块2071的第一端输出方波信号，该方波信号的频率与接收到的频率为125KHz的载波信号的实际频率相同，该方波信号通过第一隔直电路206输入到天线线圈201，与载波信号进行叠加，增强载波信号的幅度，使得发送载波信号的装置可以检测到信号收发设备发送的数据。
另外，可选地，上述方波信号的相位与接收到的频率为125KHz的载波信号的相位差为0，从而使得编号信号与载波信号在相同相位处完全重合的叠加，增强载波信号的幅度，方便发送载波信号的装置获取。
在具体实施过程中，通断模块2071可以通过N沟道或P沟道MOS管来实现，具体本实施例不作限定。
通过本实施例提供的信号收发设备，采用谐振频率为13.56MHz的天线线圈，通过放大电路对接收到的频率为125KHz的载波信号进行放大，从而使得MCU可以识别出接收到的频率为125KHz的载波信号，实现对频率为125KHz的载波信号的接收。进一步地，MCU可以从接收到的频率为125KHz的载波信号中分析出发送方发送的载波信号的频率和相位，进而可以对响应信号进行编码，从而控制驱动装置通过谐振频率为13.56MHz的天线线圈输出与发送方发送的载波信号的频率和相位匹配的编号信息，实现通过谐振频率为13.56MHz的天线线圈发送频率为125KHz的载波信号。另外，由于谐振频率为13.56MHz的天线线圈，因此，可以保证RFID卡适合在小型设备上使用。另外，该信号收发设备还可以兼容频率为13.56MHz的读卡器及芯片卡，提高了设备的集成程度，节约了成本。
实施例3
本实施例提供了一种信号响应方法。图8示出了为本发明实施例提供的信号响应方法的流程图，参见图8，本发明实施例提供的信号响应方法，包括：
S801，利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号。
其中，由于谐振频率13.56MHz的天线比谐振频率为125K的天线体积小，因此，可以在小型设备上设置谐振频率为13.56MHz的天线，以防止由于天线过大而不易于小型化设计，因此，本发明实施例在信号响应装置上设置谐振频率为13.56MHz的天线，通过谐振频率为13.56MHz的天线进行信号的收发。当然，本发明设置的谐振频率为13.56MHz的天线还可以正常接收频率为13.56MHz的载波信号，以实现设备的双模式。
值得说明的是，本发明实施例所记载的谐振频率为13.56MHz并不局限于谐振频率仅为 13.56MHz，由于天线的特性不同，谐振频率为13.56MHz的天线应被广义理解，指的是谐振频率在13.56MHz附近的天线均应属于本发明实施例记载的谐振频率为13.56MHz的天线，例如，谐振频率为13.56MHz±7KHz的天线均应属于本发明所记载的谐振频率为13.56MHz的天线。同样的，本发明实施例所记载的频率为125KHz并不局限于频率仅为125KHz，由于发送载波信号的装置(例如读写装置等)的特性不同，其发送的频率为125KHz的载波信号也应被广义理解，指的是频率在125KHz附近的载波信号均应属于本发明实施例记载的频率为125KHz的载波信号，例如，频率为125KHz的载波信号±nKHz的天线均应属于本发明所记载的频率为125KHz的载波信号，其中n为预设值。
S802，对载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号。
其中，由于发送载波信号的装置发送的载波信号的频率为125KHz，而信号响应装置采用谐振频率为13.56MHz的天线，信号响应装置通过谐振频率为13.56MHz的天线收到的载波信号的幅度较小，不足以被信号响应装置识别，因此，需要对信号响应装置接收到的载波信号进行放大，以放大载波信号的幅度，使得信号响应装置可以识别该载波信号。具体实现中，对载波信号放大可以采用放大器以及外围电路实现。
信号响应装置在将载波信号放大后，对放大后的载波信号(例如正弦波)进行模数转换，以形成数字信号(例如方波)，从而可以得到发送载波信号的装置发送信息，该信息可以包括指示信号响应装置进行响应的预设的格式的信息，也可以包括向信号响应装置发送的数据，这在本发明中并不做具体限制。具体实现中，对放大后的载波信号进行模数转换可以采用比较器以及外围电路实现，也可以采用A/D采样电路实现，这在本发明中并不做出具体限定，只要可以实现将放大后的载波信号进行模数转换得到数字信号的实现方式均应属于本发明的保护范围。
S803，根据数字信号获取载波信号的信号特性，信号特性至少包括：频率以及相位。
其中，由于发送载波信号的装置的特性不同，导致其发送的载波信号特性也不相同，因此，信号响应装置接收某一个发送载波信号的装置发送的载波信号，还需获取其发送的载波信号的信号特性，该信号特性至少包括该载波信号的频率以及相位。在信号响应装置获取到接收的载波信号的信号特性后，可以获知与其进行信息交互的发送载波信号的装置的特性，并可以按照与发送载波信号的装置的相同的特性将信息发送至发送载波信号的装置，以完成信息交互。例如，发送载波信号的装置发送的载波信号的频率为125.3KHz，信号响应装置接收到该载波信号后，获取到该载波信号的频率为125.3KHz，以便信号响应装置后续采用频率为125.3KHz的响应信号对发送载波信号的装置进行响应。
具体实现中，当对放大后的载波信号进行模数转换可以采用比较器以及外围电路实现 时，信号响应装置可以通过比较器输出的方波确定载波信号的特性；当对放大后的载波信号进行模数转换采用A/D采样电路实现时，信号响应装置可以通过采样得到的正弦波确定载波信号的特性。
S804，将响应数据以频率进行编码，得到编码信号，并根据相位确定输出编码信号的起始相位，通过天线输出编码信号，使编码信号与载波信号在相同相位处叠加。
其中，为了响应发送载波信号的装置，信号响应装置需要以与载波信号相同的频率进行编码，并以与载波信号相同的相位发送编码信号，以保证编码信号与载波信号在相同相位处叠加，增强载波信号的幅度，使发送载波信号的装置可以获取到，从而完成信号响应装置向发送载波信号的装置的信息传输。优选的，起始相位与载波信号的相位差为0，可以使得编码信号与载波信号在相同相位处完全重合的叠加，增强载波信号的幅度，方便发送载波信号的装置获取。
由此可见，通过本发明的信号响应方法，可以利用体积较小的谐振频率为13.56MHz的天线收发频率为125KHz的信号，以实现设备小型化的需求。
作为本发明实施例的一个可选实施方式，响应数据为唯一识别号。此时，发送载波信号的装置可以读写装置，例如读卡器，信号响应装置可以作为ID卡来响应读卡器。其中，唯一识别号可以为ID号，例如身份证号等。
实施例4
本实施例提供了一种信号响应装置。图9示出了为本发明实施例提供的一种信号响应装置的结构示意图，参见图9，本发明实施例提供的一种信号响应装置90，包括：接收模块901，用于利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号；信号处理模块902，用于对载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；信号特性获取模块903，用于根据数字信号获取载波信号的信号特性，信号特性至少包括：频率以及相位；输出模块904，用于将响应数据以频率进行编码，得到编码信号，并根据相位确定输出编码信号的起始相位，通过天线输出编码信号，使编码信号与载波信号在相同相位处叠加。
其中，由于谐振频率13.56MHz的天线比谐振频率为125K的天线体积小，因此，可以在小型设备上设置谐振频率为13.56MHz的天线，以防止由于天线过大而不易于小型化设计，因此，本发明实施例在信号响应装置90上设置谐振频率为13.56MHz的天线，通过谐振频率为13.56MHz的天线进行信号的收发。当然，本发明设置的谐振频率为13.56MHz的天线还可以正常接收频率为13.56MHz的载波信号，以实现设备的双模式。
值得说明的是，本发明实施例所记载的谐振频率为13.56MHz并不局限于谐振频率仅为 13.56MHz，由于天线的特性不同，谐振频率为13.56MHz的天线应被广义理解，指的是谐振频率在13.56MHz附近的天线均应属于本发明实施例记载的谐振频率为13.56MHz的天线，例如，谐振频率为13.56MHz±7KHz的天线均应属于本发明所记载的谐振频率为13.56MHz的天线。同样的，本发明实施例所记载的频率为125KHz并不局限于频率仅为125KHz，由于发送载波信号的装置(例如读写装置等)的特性不同，其发送的频率为125KHz的载波信号也应被广义理解，指的是频率在125KHz附近的载波信号均应属于本发明实施例记载的频率为125KHz的载波信号，例如，频率为125KHz的载波信号±nKHz的天线均应属于本发明所记载的频率为125KHz的载波信号，其中n为预设值。
由于发送载波信号的装置发送的载波信号的频率为125KHz，而接收模块901采用谐振频率为13.56MHz的天线，通过谐振频率为13.56MHz的天线收到的载波信号的幅度较小，不足以被信号响应装置90识别，因此，需要信号处理模块902对信号响应装置90接收到的载波信号进行放大，以放大载波信号的幅度，使得信号响应装置90可以识别该载波信号。信号处理模块902在将载波信号放大后，对放大后的载波信号(例如正弦波)进行模数转换，以形成数字信号(例如方波)，从而可以得到发送载波信号的装置发送信息，该信息可以包括指示信号响应装置90进行响应的预设的格式的信息，也可以包括向信号响应装置90发送的数据，这在本发明中并不做具体限制。
作为本发明的一个可选实施方式，信号处理模块902至少包括放大器和比较器，或者信号处理模块至少包括放大器以及采样电路，信号处理模块902的具体实现形式在本发明中并不做出具体限定，只要可以实现将载波信号进行放大，并将放大后的载波信号进行模数转换得到数字信号的实现方式均应属于本发明的保护范围。
由于发送载波信号的装置的特性不同，导致其发送的载波信号特性也不相同，因此，信号响应装置90接收某一个发送载波信号的装置发送的载波信号，还需获取其发送的载波信号的信号特性，该信号特性至少包括该载波信号的频率以及相位。在信号特性获取模块903获取到接收的载波信号的信号特性后，可以获知与其进行信息交互的发送载波信号的装置的特性，并可以按照与发送载波信号的装置的相同的特性将信息发送至发送载波信号的装置，以完成信息交互。例如，发送载波信号的装置发送的载波信号的频率为125.3KHz，接收模块901接收到该载波信号后，通过信号处理模块902的处理，信号特性获取模块903获取到该载波信号的频率为125.3KHz，以便信号响应装置90后续采用频率为125.3KHz的响应信号对发送载波信号的装置进行响应。
具体实现中，当对放大后的载波信号进行模数转换可以采用比较器以及外围电路实现时，信号特性获取模块903可以通过比较器输出的方波确定载波信号的特性；当对放大后的 载波信号进行模数转换采用A/D采样电路实现时，信号特性获取模块903可以通过采样得到的正弦波确定载波信号的特性。
为了响应发送载波信号的装置，信号响应装置90的输出模块904的需要以与载波信号相同的频率进行编码，并以与载波信号相同的相位发送编码信号，以保证编码信号与载波信号在相同相位处叠加，增强载波信号的幅度，使发送载波信号的装置可以获取到，从而完成信号响应装置90向发送载波信号的装置的信息传输。优选的，起始相位与载波信号的相位差为0，可以使得编码信号与载波信号在相同相位处完全重合的叠加，增强载波信号的幅度，方便发送载波信号的装置获取。
由此可见，通过本发明的信号响应装置90，可以利用体积较小的谐振频率为13.56MHz的天线收发频率为125KHz的信号，以实现设备小型化的需求。
作为本发明实施例的一个可选实施方式，响应数据为唯一识别号。此时，发送载波信号的装置可以读写装置，例如读卡器，信号响应装置90可以作为ID卡来响应读卡器。其中，唯一识别号可以为ID号，例如身份证号等。
实施例5
本实施例提供了一种信号响应系统。图10示出了本发明实施例提供的一种信号响应系统的结构示意图，参见图10，本发明实施例提供的一种信号响应系统，包括读写装置10以及信号响应装置90；其中信号响应装置90为上述的信号响应装置，在此不再赘述，读写装置10，用于发送频率为125KHz的载波信号，并接收编码信号。
通过本发明实施例提供的信号响应系统，在保证设备小型化的同时，还可以实现信息交互。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。本发明的范围由所附权利要求及其等同限定。

Claims (16)

  1. 一种信号收发设备，其特征在于，包括：谐振频率为13.56MHz的天线线圈、放大电路、模数转换电路、第一隔直电路、第二隔直电路、直流电源以及微控制单元MCU，其中：
    所述直流电源分别与所述放大电路、所述模数转换电路以及所述MCU电连接，用于为所述放大电路、所述模数转换电路以及所述MCU供电；
    所述天线线圈，用于接收频率为125KHz的载波信号；
    所述第二隔直电路，其一端与所述天线线圈电连接，另一端与所述放大电路的输入端电连接，用于将所述载波信号传输至所述放大电路；
    所述放大电路，其输入端与所述第二隔直电路电连接，用于对所述载波信号进行放大，将放大后的载波信号从所述放大电路的输出端输出；
    所述模数转换电路，其输入端与所述放大电路的输出端电连接，用于对经所述放大电路放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路的输出端输出；
    所述MCU，其接收端口与所述模数转换电路的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，并根据所述相位确定输出所述编码信号的起始相位，从所述MCU的发送端口输出所述编码信号；
    所述第一隔直电路，其一端与所述MCU的发送端口电连接，另一端与所述天线线圈电连接，用于将所述编码信号传输至所述天线线圈发送。
  2. 一种信号收发设备，其特征在于，包括：谐振频率为13.56MHz的天线线圈、放大电路、模数转换电路、第一隔直电路、驱动装置、第二隔直电路、直流电源以及微控制单元MCU，其中：
    所述直流电源分别与所述放大电路、所述模数转换电路、所述驱动装置以及所述MCU电连接，用于为所述放大电路、所述模数转换电路、所述驱动装置以及所述MCU供电；
    所述天线线圈，用于接收频率为125KHz的载波信号；
    所述第二隔直电路，其一端与所述天线线圈电连接，另一端与所述放大电路的输入端电连接，用于将所述载波信号传输至所述放大电路；
    所述放大电路，其输入端与所述第二隔直电路电连接，用于对所述载波信号进行放大， 将放大后的载波信号从所述放大电路的输出端输出；
    所述模数转换电路，其输入端与所述放大电路的输出端电连接，用于对经所述放大电路放大后的载波信号进行模数转换，得到数字信号，将所述数据信号通过所述模数转换电路的输出端输出；
    所述MCU，其接收端口与所述模数转换电路的输出端电连接，用于：根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；将待输出数据以所述频率进行编码，得到编码信号，根据所述相位确定输出所述编码信号的起始相位，并根据所述编码信号及起始相位从所述MCU的发送端口输出控制信号；
    所述驱动装置，其输入端与所述MCU的发送端口电连接，输出端与所述第一隔直电路电连接，用于在所述控制信号的控制下，从所述驱动装置的所述输出端输出所述编码信号；
    所述第一隔直电路，其一端与所述驱动装置的输出端电连接，另一端与所述天线线圈电连接，用于将所述编码信号传输至所述天线线圈发送。
  3. 根据权利要求2所述的设备，其特征在于，所述驱动装置，包括：
    通断模块，包括：第一端、第二端和控制端，其中，所述控制端为所述驱动装置的输入端，与所述MCU的发送端口电连接；所述第一端为所述驱动装置的输出端，与所述第一隔直电路电连接，且所述第一端与直流电源电连接；所述第二端与地端电连接；所述通断模块用于在所述控制信号的控制下导通或断开所述第一端与所述第二端之间的电连接。
  4. 根据权利要求1至3任一项所述的设备，其特征在于，所述模数转换电路包括：A/D采样电路或电压比较电路。
  5. 根据权利要求1至4任一项所述的设备，其特征在于，还包括：
    与所述天线线圈的两端分别电连接的收发电路，用于接收和发送频率为13.56MHz的信号；
    与所述收发电路电连接的频率为13.56MHz的读卡器及卡芯片，用于解析所述收发电路接收到的信号，以及编码所述收发电路发送的信号。
  6. 根据权利要求5所述的设备，其特征在于，还包括：
    整流装置，其输入端分别与所述天线线圈的两端电连接，用于接收所述天线线圈输出的交流信号，对所述交流信号进行整流，从所述整流装置的输出端输出直流电信号。
  7. 根据权利要求6所述的设备，其特征在于，还包括：
    充电端口，与所述整流装置的输出端电连接，用于从所述整流装置获取电能。
  8. 根据权利要求7所述的设备，其特征在于，还包括：
    切换装置，电连接在所述整流装置的输出端与所述充电端口之间，用于连通或断开所述整流装置与所述充电端口之间的电连接。
  9. 一种信号响应方法，其特征在于，包括：
    利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号；
    对所述载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；
    根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；
    将响应数据以所述频率进行编码，得到编码信号，并根据所述相位确定输出所述编码信号的起始相位，通过所述天线输出所述编码信号，使所述编码信号与所述载波信号在相同相位处叠加。
  10. 根据权利要求9所述的方法，其特征在于，所述起始相位与所述载波信号的相位差为0。
  11. 根据权利要求9或10所述的方法，其特征在于，所述响应数据为唯一识别号。
  12. 一种信号响应装置，其特征在于，包括：
    接收模块，用于利用谐振频率为13.56MHz的天线接收频率为125KHz的载波信号；
    信号处理模块，用于对所述载波信号进行放大，并对放大后的信号进行模数转换，得到数字信号；
    信号特性获取模块，用于根据所述数字信号获取所述载波信号的信号特性，所述信号特性至少包括：频率以及相位；
    输出模块，用于将响应数据以所述频率进行编码，得到编码信号，并根据所述相位确定输出所述编码信号的起始相位，通过所述天线输出所述编码信号，使所述编码信号与所述载波信号在相同相位处叠加。
  13. 根据权利要求12所述的装置，其特征在于，所述起始相位与所述载波信号的相位差为0。
  14. 根据权利要求12或13所述的装置，其特征在于，所述响应数据为唯一识别号。
  15. 根据权利要求12至14任一项所述的装置，其特征在于，所述信号处理模块至少包括放大器和比较器，或者所述信号处理模块至少包括放大器以及采样电路。
  16. 一种信号响应系统，其特征在于，包括如权利要求12至15任一项所述的信号响应装置以及读写装置；
    所述读写装置，用于发送频率为125KHz的载波信号，并接收所述编码信号。
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CN114531178A (zh) * 2022-01-28 2022-05-24 珠海昇生微电子有限责任公司 一种充电及双向通讯系统与方法
CN115865225A (zh) * 2023-02-28 2023-03-28 北京紫光青藤微系统有限公司 用于确定射频设备异常的方法、装置、电子装置及设备
CN115865225B (zh) * 2023-02-28 2024-02-20 北京紫光青藤微系统有限公司 用于确定射频设备异常的方法、装置、电子装置及设备

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