CN213751094U - Card reader auxiliary equipment - Google Patents
Card reader auxiliary equipment Download PDFInfo
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- CN213751094U CN213751094U CN202023314133.6U CN202023314133U CN213751094U CN 213751094 U CN213751094 U CN 213751094U CN 202023314133 U CN202023314133 U CN 202023314133U CN 213751094 U CN213751094 U CN 213751094U
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Abstract
The utility model discloses a card reader auxiliary device, belonging to the field of card readers; the device comprises an induction circuit module, a control module, a transceiver module, a power management module and an antenna module; the card reader comprises a card reader auxiliary device, a sensing circuit module, a control module and a control module, wherein the sensing circuit module is connected with the control module and used for sensing signal changes of a space field around the card reader auxiliary device and providing sensing signals for detecting whether a card exists or not for the control module; the control module is connected with the transceiver module and used for detecting whether a card exists or not and sending a command for opening or closing the non-access field to the transceiver module; the transceiver module is used for opening or closing the non-receiving field according to the received instruction. Through the equipment, the fingerprint comparison of the card can be realized without upgrading the card reader, so that the card and the card reader can smoothly complete communication.
Description
Technical Field
The utility model relates to a card reader field especially relates to a card reader auxiliary assembly.
Background
Card readers (Card readers) are Card reading devices, which can be classified into IC Card readers, including contact IC cards and non-contact IC cards, according to the types of cards; at present, contactless card readers are widely used in the fields related to authentication, for example, the contactless card readers cooperate with fingerprint cards to complete user authentication, however, the inventor finds that the existing authentication method has defects in the invention process: because the verification process of the non-contact card reader and the fingerprint card is completed based on non-contact field intensity electricity taking, when the time interval of field intensity emitted by the non-contact card reader is longer or the field intensity emitted by the card reader is weaker, the requirement of the fingerprint card cannot be met, and therefore safety verification cannot be carried out.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the embodiment of the utility model provides a card reader auxiliary device, which can provide electric energy for completing fingerprint comparison for a fingerprint card, so as to complete the fingerprint comparison firstly and then enable card communication to be effective; the field intensity of the card reader is indirectly increased, so that the communication is safer.
The card reader auxiliary equipment provided by the embodiment of the invention comprises: the device comprises an induction circuit module, a control module, a transceiving module and a power management module;
the sensing circuit module is connected with the control module and used for sensing signal changes of a space field around the card reader auxiliary equipment and providing sensing signals for detecting whether the card exists or not for the control module;
the control module is connected with the sensing circuit module and the transceiver module and is used for acquiring sensing signals provided by the sensing circuit module and detecting whether a card exists according to the sensing signals; the fingerprint card detection device is used for sending a command of opening a non-receiving field to the transceiver module when detecting that the card exists, and providing field intensity for the fingerprint card; the system is also used for sending a command for closing the non-field receiving module to the transceiver module after the field is opened and when the preset time is reached;
the receiving and sending module is connected with the control module and used for opening or closing a non-receiving field according to a received instruction sent by the control module; the fingerprint comparison module is also used for receiving fingerprint comparison result data sent by the card and sending the fingerprint comparison result data to the control module;
the power management module is connected with the sensing circuit module, the control module and the transceiver module and is used for supplying power to the modules in the card reader auxiliary equipment.
Through the utility model provides a field intensity of equipment can indirect increase card reader need not to upgrade the fingerprint that can realize the card to the card reader and compare to can make card and card reader accomplish the communication smoothly, improve the ease for use of card reader, ensure the success rate of punching the card, can also realize independently charging simultaneously.
Drawings
FIG. 1 is a block diagram of a card reader accessory according to embodiment 1;
FIG. 2 is a block diagram showing a detailed structure of a card reader accessory according to embodiment 2;
FIG. 3 is a circuit diagram of a sensing circuit module provided in embodiment 2;
FIG. 4 is a circuit diagram of a sensing circuit module provided in embodiment 2;
FIG. 5 is a circuit diagram of a sensing circuit module provided in embodiment 2;
FIG. 6 is a circuit diagram of a control module provided in embodiment 2;
fig. 7 is a circuit diagram showing a connection between a transmission circuit and a first antenna circuit in a transceiver module provided in embodiment 2;
fig. 8 is a circuit diagram showing a connection between a transmission circuit and a first antenna circuit in a transceiver module provided in embodiment 2;
fig. 9 is a circuit diagram of a detection circuit in a receiving circuit provided in embodiment 2;
FIG. 10 is a circuit diagram of a power management circuit in a power management module provided in embodiment 2;
FIG. 11 is a circuit diagram of a power switching circuit in a power management module provided in embodiment 2;
fig. 12 and 13 are circuit diagrams of a power control circuit in a power management module provided in embodiment 2;
fig. 14 is a specific block diagram of a power charging circuit in the power management module provided in embodiment 2;
FIG. 15 is a circuit diagram of a voltage stabilizing circuit in a power charging circuit provided in embodiment 2;
fig. 16 is a circuit diagram of a charging chip circuit in the power charging circuit provided in embodiment 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The embodiment 1 of the utility model provides a card reader auxiliary assembly, this card reader auxiliary assembly are used for fingerprint card and the mutual process of card reader, and the non-that provides through card reader auxiliary assembly connects the field, can make the fingerprint card acquire sufficient electric energy and carry out the fingerprint and compare.
Fig. 1 is a block diagram of a card reader auxiliary device, which includes: the device comprises an induction circuit module, a control module, a transceiving module and a power management module;
optionally, the sensing circuit module is connected to the control module, and is configured to sense a signal change of a space field around the card reader auxiliary device, and provide a sensing signal for detecting whether a card exists to the control module;
optionally, the control module is connected with the sensing circuit module and the transceiver module, and is configured to collect a sensing signal provided by the sensing circuit module, and detect whether a card exists according to the sensing signal; the fingerprint card is also used for sending an instruction for opening a non-receiving field to the transceiver module when detecting that the card exists, so as to provide field intensity for the fingerprint card; the system is also used for sending a command for closing the non-field receiving module to the receiving and sending module after the field is opened and when the preset time is reached;
optionally, the transceiver module is connected to the control module and configured to turn on or turn off the non-reception field according to a received instruction from the control module; the fingerprint comparison module is also used for receiving fingerprint comparison result data sent by the card and sending the fingerprint comparison result data to the control module;
optionally, the power management module is connected to the sensing circuit module, the control module, and the transceiver module, and is configured to supply power to a module in the card reader accessory.
Optionally, the transceiver module comprises a transmitting circuit and a first antenna circuit;
the transmitting circuit is connected with the control module, the power management module and the first antenna circuit and used for receiving the instruction transmitted by the control module and generating an alternating magnetic field or closing the magnetic field through the first antenna circuit according to the instruction.
Preferably, the transmitting circuit is further configured to transmit a request for a heartbeat packet to the card through the alternating magnetic field generated by the first antenna circuit.
Preferably, the transmitting circuit is specifically an oscillating circuit and an MOS transistor;
the oscillation circuit is connected with the control module, the power management module and the MOS tube, and the MOS tube is connected with the oscillation circuit and the first antenna circuit; the oscillating circuit is used for receiving the instruction sent by the control module and generating an alternating magnetic field or closing the magnetic field through the MOS tube and the first antenna circuit according to the instruction.
Preferably, the transmitting circuit is specifically an NFC chip;
the NFC chip is connected with the control module, the power management module and the first antenna circuit and used for receiving an instruction sent by the control module and generating an alternating magnetic field or closing the magnetic field through the first antenna circuit according to the instruction;
preferably, the NFC chip is further configured to send a heartbeat packet request to the card through the alternating magnetic field generated by the first antenna circuit.
Preferably, the transceiver module further comprises a receiving circuit;
the receiving circuit is connected with the control module, the power management module and the first antenna circuit, and is used for receiving the fingerprint comparison result data sent by the card through the first antenna circuit and sending the fingerprint comparison result data to the control module; and the card is also used for receiving the heartbeat packet sent by the card and sending the heartbeat packet to the control module.
Further preferably, the receiving circuit includes: a detection circuit;
the detection circuit is connected with the first antenna circuit, the control module and the power management module and is used for receiving alternating current of a non-connected magnetic field, which is sent by the first antenna circuit; the control module is used for processing the received alternating current to obtain a digital signal and sending the digital signal to the control module.
Optionally, the control module comprises an MCU chip;
the MCU chip is connected with the sensing circuit module and the transceiving module and is used for acquiring signals sensed by the sensing circuit module and judging whether a card exists according to the acquired signals; the fingerprint card is also used for sending an instruction for opening a non-receiving field to the transceiver module when the card is detected to exist, so as to provide field intensity for the fingerprint card; and the controller is also used for sending a command of closing the non-field receiving module to the transceiver module after the field is opened and when the preset time is reached.
Optionally, the sensing circuit module comprises a second antenna circuit and a first peripheral circuit;
the second antenna circuit is connected with the first peripheral circuit and used for sensing alternating current generated by a non-contact magnetic field emitted by the card reader;
the first peripheral circuit is connected with the control module and used for converting alternating current into direct current;
the control module is connected with the first peripheral circuit and used for collecting direct current and judging whether a card exists according to the collected direct current.
Preferably, the first peripheral circuit includes a rectifying circuit and a filtering voltage-dividing circuit;
the rectifying circuit is connected with the second antenna circuit and the filtering voltage division circuit; the filtering voltage division circuit is connected with the control module and the rectifying circuit.
Optionally, the sensing circuit module comprises a second antenna circuit, an electrode circuit and a second peripheral circuit;
the second antenna circuit is connected with the electrode circuit and the second peripheral circuit and used for inducing a non-contact magnetic field emitted by the card reader to generate alternating current;
the electrode circuit is connected with the second antenna circuit and the second peripheral circuit and used for sensing the change of the internal interelectrode capacitance electric quantity and outputting corresponding alternating current;
the second peripheral circuit is connected with the electrode circuit, the second antenna circuit and the control module and used for converting alternating current into direct current;
the control module is connected with the second peripheral circuit and used for collecting direct current on the second peripheral circuit and judging whether a card exists according to the collected direct current.
Preferably, the second peripheral circuit includes a rectifying circuit and a filtering voltage-dividing circuit;
the rectifying circuit is connected with the electrode circuit and the filtering voltage-dividing circuit; the filtering voltage division circuit is connected with the control module and the rectifying circuit.
Optionally, the control module comprises a sensor, a third peripheral circuit;
the sensor is connected with the third peripheral circuit and used for sensing the change of light intensity or magnetic field intensity and outputting a corresponding analog signal;
the third peripheral circuit is connected with the sensor and the control module and is used for converting the analog signal into a digital signal;
the control module is connected with the third peripheral circuit and used for acquiring digital signals on the third peripheral circuit and judging whether the card exists according to the acquired digital signals.
Preferably, the third peripheral circuit includes a driving chip;
the driving chip is connected with the sensor and used for converting the analog signal into a digital signal to be output when the sensor outputs a corresponding analog signal after sensing the change of the light intensity or the magnetic field intensity;
the control module is connected with the driving chip and used for acquiring the digital signals output by the driving chip and judging whether the card exists according to the digital signals.
Optionally, the power management module includes: the power supply management circuit comprises a voltage stabilizing chip;
and the voltage stabilizing chip is used for converting the input power supply into a rated voltage value required by the control module and the transceiver module.
Preferably, the power management module further comprises: and the power supply switching circuit is used for providing at least one power supply mode.
Preferably, the power management module further comprises: a power supply control circuit; the power supply control circuit is connected with the power supply management circuit, the control module and the transceiving module and is used for receiving the analog signal output by the control module and controlling the power supply to output according to the analog signal.
Preferably, the power management module further comprises a power charging circuit; the power supply charging circuit is connected with the power supply management circuit;
wherein, power charging circuit includes: a third antenna circuit, a fourth peripheral circuit, a voltage stabilizing circuit and a charging chip circuit;
the third antenna circuit is connected with a fourth peripheral circuit, the fourth peripheral circuit is connected with a voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the charging chip circuit;
the third antenna circuit is used for acquiring electric energy when the card reader sends out non-contact field strength and transmitting the electric energy to the charging chip circuit through the fourth peripheral circuit and the voltage stabilizing circuit;
the charging chip circuit is connected with the power management circuit and used for charging the power management circuit according to the electric energy.
Example 2
The embodiment 2 of the utility model provides a card reader auxiliary assembly, this card reader auxiliary assembly are used for fingerprint card and the mutual process of card reader, and the non-that provides through card reader auxiliary assembly connects the field, can make the fingerprint card acquire sufficient electric energy and carry out the fingerprint and compare.
Fig. 2 is a detailed block diagram of an auxiliary device of a card reader, and the device includes: the device comprises an induction circuit module, a control module, a transceiving module and a power management module;
optionally, as shown in fig. 3, the sensing circuit module includes a second antenna circuit, a first peripheral circuit;
specifically, the second antenna circuit is connected with the first peripheral circuit and used for inducing a non-contact magnetic field emitted by the card reader to generate alternating current; the first peripheral circuit is connected with the control module and used for converting alternating current into direct current; the control module collects direct current and detects whether a card exists according to the direct current;
further, a first peripheral circuit in the sensing circuit module comprises a rectifying circuit and a filtering voltage-dividing circuit, a second antenna circuit is connected with the rectifying circuit in the first peripheral circuit, the rectifying circuit is connected with the filtering voltage-dividing circuit in the first peripheral circuit, an ADC5E0 end in the filtering voltage-dividing circuit is connected with the control module, specifically, the second antenna circuit is used for sensing a non-contact magnetic field emitted by the card reader to generate alternating current, and the alternating current is rectified and divided by the rectifying circuit and the filtering voltage-dividing circuit to obtain direct current; the control module collects direct current and judges whether the collected voltage value accords with a first preset range, if so, the card is determined to exist, otherwise, the card does not exist; when the control module detects that the card exists, a non-field-receiving opening instruction is sent to the transceiver module.
Optionally, in this embodiment, as shown in fig. 4, the sensing circuit module includes a first antenna circuit, an electrode circuit, and a second peripheral circuit;
specifically, the first antenna circuit is connected with the electrode circuit and the second peripheral circuit and is used for inducing a non-connected magnetic field emitted by the card reader to generate alternating current; the electrode circuit is connected with the first antenna circuit and the second peripheral circuit and used for inducing the change of internal interelectrode capacitance and outputting corresponding alternating current; the second peripheral circuit is connected with the electrode circuit, the first antenna circuit and the control module and is used for converting alternating current into direct current; the control module collects direct current on the second peripheral circuit and detects whether a card exists.
Furthermore, a second peripheral circuit in the induction circuit module comprises a rectifying circuit and a filtering voltage division circuit; the electrode circuit is provided with two electrode terminals POL1 and POL 2; one electrode end POL1 is connected with the first antenna circuit, the other electrode end POL2 is connected with the first antenna circuit through a resistor R38, the electrode end POL2 is further connected with a rectifying circuit in the second peripheral circuit, the rectifying circuit is further connected with the first antenna circuit and a filtering voltage-dividing circuit, and the filtering voltage-dividing circuit is connected with the rectifying circuit and the control module;
optionally, in this embodiment, as shown in fig. 5, the sensing circuit module includes a sensor and a third peripheral circuit;
specifically, the sensor is connected with a third peripheral circuit and used for sensing the change of light intensity or magnetic field intensity and outputting a corresponding analog signal; the third peripheral circuit is connected with the sensor and the control module and is used for converting the analog signal into a digital signal; the control module collects digital signals on the third peripheral circuit and detects whether a card exists.
Further, a third peripheral circuit in the sensing circuit module comprises a driving chip; when the sensor senses the change of the light intensity or the magnetic field intensity, the corresponding analog signal is output to the driving chip, the driving chip converts the analog signal into a digital signal and outputs the digital signal through the pin 3, the control module collects the digital signal output by the pin 3 of the driving chip, and whether a card exists is judged according to the digital signal.
Optionally, as shown in fig. 6, a circuit diagram of the control module in fig. 2 is shown, where the control module includes an MCU chip, and the chip is connected to the transceiver module through pins H4, E2, F2, D2, and E4, and connected to the power management module through pins F6, D1, F1, C4, G6, B9, H6, C5, F5, and B8;
optionally, as shown in fig. 2, the transceiver module includes a transmitting circuit and a first antenna circuit;
specifically, the transmitting circuit is connected with the control module, the power management module and the first antenna circuit, and is used for receiving an instruction transmitted by the control module and outputting an alternating magnetic field or closing the magnetic field through the first antenna circuit according to the instruction; and the first antenna circuit is also used for sending a heartbeat packet request to the card through the alternating magnetic field generated by the first antenna circuit.
Fig. 7 is a circuit diagram showing a connection between a transmitting circuit and a first antenna circuit in a transceiver module, where the transmitting circuit includes an NFC chip, the NFC chip is connected to a control module through pins 32, 29, 30, 31, and 27, connected to a power management module through pins 1 and 8, and connected to the first antenna circuit through pins 10 and 11;
the NFC chip is also used for sending a heartbeat packet request to the card through the alternating magnetic field generated by the first antenna circuit.
Further preferably, the transmission circuit further includes a matching circuit; specifically, the matching circuit is connected to the NFC chip and the first antenna circuit for matching the first antenna circuit.
Fig. 8 is a circuit diagram showing a connection between a transmitting circuit and a first antenna circuit in a transceiver module, where the transmitting circuit includes an oscillating circuit and a MOS transistor Q8, where the oscillating circuit is connected to the first antenna circuit through the MOS transistor, the oscillating circuit is connected to a control module through pins 2, 3, and 4, connected to a power management module through pins 7 and 8, and connected to the MOS transistor through pin 6; the MOS tube comprises a first pin, a second pin and a third pin, and is connected with the oscillation circuit through the first pin and connected with the first antenna circuit through the third pin; after the oscillation circuit receives a preset signal sent by the control module, the MOS tube is conducted, so that the non-contact field intensity can be turned on through the first antenna circuit;
optionally, as shown in fig. 2, the transceiver module further comprises a receiving circuit,
the receiving circuit is connected with the control module, the power management module and the first antenna circuit, and is used for receiving fingerprint comparison result data sent by the fingerprint card and sending the fingerprint comparison result data to the control module; the fingerprint card is also used for receiving the heartbeat packet sent by the fingerprint card and sending the heartbeat packet to the control module; the receiving circuit is connected with the power management circuit and used for receiving power supply of the power management circuit.
Specifically, the receiving circuit includes a wave detection circuit; as shown in fig. 9, the circuit diagram of the detector circuit in the receiver circuit is shown, in which the first antenna circuit is connected to RFI2 terminal in the detector circuit, and is used for inducing the ac power of the non-magnetic field emitted by itself and transmitting the ac power to the detector circuit; and the UART0 end in the detection circuit is connected with the control module and used for processing the alternating current to obtain a digital signal and sending the digital signal to the control module.
Optionally, as shown in fig. 2, the power management module includes a power management circuit;
specifically, the power management circuit is connected with the control module and the transceiver module;
FIG. 10 is a circuit diagram of a power management circuit in the power management module;
preferably, the power management circuit comprises a voltage stabilizing chip, and the input power is converted into a rated voltage value required by the control module and the transceiver module through the voltage stabilizing chip;
in this embodiment, the power management circuit may provide a power VCC through a battery, or may provide a power through an external power supply via a USB interface, and the voltage stabilizing chip in the power management circuit converts the power into a rated voltage value required by the control module and the transceiver module, for example, the rated voltage value is 3.3V.
Further optionally, as shown in fig. 2, the power management module further includes a power switch circuit;
specifically, the power switch circuit is connected with the power management circuit;
fig. 11 is a circuit diagram of a power switch circuit in a power management module, wherein the power management circuit can select a power supply mode according to a requirement through the power switch circuit;
further optionally, as shown in fig. 2, the power management module further includes a power control circuit; the power supply control circuit is connected with the power supply management circuit and the control module;
the power supply control circuit comprises a power supply control circuit 1 and a power supply control circuit 2;
specifically, as shown in fig. 12, which is a circuit diagram of a power control circuit in a power management module, a power control circuit 1 is composed of a first MOS transistor and a third MOS transistor, wherein a port 1 of the first MOS transistor is connected to a port 3 of the third MOS transistor through a resistor R23, a port 2 is connected to a power input terminal, and a port 3 is connected to a power output terminal; the port 1 of the third MOS transistor is connected with an MCU chip pin E1 in the control module through a resistor R25, the port 2 is grounded, and the port 3 is connected with the port 1 of the first MOS transistor through a resistor R23;
FIG. 13 is a circuit diagram of a power control circuit in the power management module; the power supply control circuit 2 consists of a second MOS tube and a fourth MOS tube, wherein a port 1 of the second MOS tube is connected with a port 3 of the fourth MOS tube through a resistor R24, a port 2 is connected with a power supply input end, and a port 3 is connected with a power supply output end; a port 1 of the fourth MOS transistor is connected with a pin E1 of an MCU chip in the control module through a resistor R25, a port 2 of the fourth MOS transistor is grounded, and a port 3 of the fourth MOS transistor is connected with a port 1 of the second MOS transistor through a resistor R23;
when control module detects the card through the MCU chip, through pin E1 output high level, make the third, the fourth MOS pipe switches on, and it is first, the second MOS pipe also switches on, the power can be followed power input end and exported to power output end, thereby make each module can normally work, when control module passes through the MCU chip and does not detect the card, through pin E1 output low level, make the third, the fourth MOS pipe does not switch on, and it is first, the second MOS pipe also does not switch on, be off-state between power input end and the power output end, thereby need not supply power for each module, play the effect that reduces consumption and power saving.
Further optionally, as shown in fig. 2, the power management module further includes: a power supply charging circuit;
fig. 14 is a block diagram of a power charging circuit, which includes: a third antenna circuit, a fourth peripheral circuit, a voltage stabilizing circuit and a charging chip circuit; the third antenna circuit is connected with a fourth peripheral circuit, the fourth peripheral circuit is connected with a voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the charging chip circuit;
specifically, the third antenna circuit and the fourth peripheral circuit may be the same as the second antenna circuit and the first peripheral circuit, and as shown in fig. 15, are a circuit diagram of a voltage stabilizing circuit in the power charging circuit, where a Charge _ choose end in a filtering voltage dividing circuit in the fourth peripheral circuit is connected to a Charge _ choose end in the voltage stabilizing circuit; FIG. 16 is a circuit diagram of a charging chip circuit in a power charging circuit, wherein an RF _ VIN terminal of the charging chip circuit is connected to an RF _ VIN terminal of a voltage regulator circuit;
further, when the power management circuit is powered by a USB power source, the USB _ VIN terminal of the charging chip circuit is connected to the VCC terminal of the power management circuit, and the battery can also be charged by the USB power source.
In this embodiment, the first peripheral circuit, the second peripheral circuit, and the fourth peripheral circuit may be one peripheral circuit in common.
In this embodiment, the card reader auxiliary device and the card reader may be two independent hardware devices in structure, for example, the card reader auxiliary device is attached to the card reader, or may be a whole, for example, the card reader auxiliary device is embedded in the card reader.
The card reader auxiliary device provided by the present invention is described in detail above, and the device claimed by the present invention is explained by applying specific examples herein, and the description of the above embodiments is only used to help understanding the structure of the device; meanwhile, for those skilled in the art, other various corresponding changes and modifications can be made according to the technical solution and technical idea of the present invention, and all such changes and modifications shall fall within the protection scope of the claims of the present invention.
Claims (19)
1. A card reader accessory, the device comprising: the device comprises an induction circuit module, a control module, a transceiving module and a power management module;
the sensing circuit module is connected with the control module and used for sensing signal changes of a space field around the card reader auxiliary equipment and providing sensing signals for detecting whether the card exists or not for the control module;
the control module is connected with the sensing circuit module and the transceiver module and is used for acquiring sensing signals provided by the sensing circuit module and detecting whether a card exists according to the sensing signals; the fingerprint card detection device is used for sending a command of opening a non-receiving field to the transceiver module when detecting that the card exists, and providing field intensity for the fingerprint card; the system is also used for sending a command for closing the non-field receiving module to the transceiver module after the field is opened and when the preset time is reached;
the receiving and sending module is connected with the control module and used for opening or closing a non-receiving field according to a received instruction sent by the control module; the fingerprint comparison module is also used for receiving fingerprint comparison result data sent by the card and sending the fingerprint comparison result data to the control module;
the power management module is connected with the sensing circuit module, the control module and the transceiver module and is used for supplying power to the modules in the card reader auxiliary equipment.
2. The device of claim 1, wherein the transceiver module comprises a transmit circuit and a first antenna circuit;
the transmitting circuit is connected with the control module, the power management module and the first antenna circuit, and is used for receiving the instruction transmitted by the control module and generating an alternating magnetic field or closing the magnetic field through the first antenna circuit according to the instruction.
3. The apparatus of claim 2, wherein the transmit circuit is further configured to transmit a heartbeat packet request to a card via the alternating magnetic field generated by the first antenna circuit.
4. The device according to claim 2, characterized in that the transmission circuit is in particular an oscillation circuit and a MOS transistor;
the oscillation circuit is connected with the control module, the power management module and the MOS tube, and the MOS tube is connected with the oscillation circuit and the first antenna circuit; the oscillation circuit is used for receiving the instruction sent by the control module and generating an alternating magnetic field or closing the magnetic field through the MOS tube and the first antenna circuit according to the instruction.
5. The device according to claim 2, characterized in that the transmitting circuit is in particular an NFC chip;
the NFC chip is connected with the control module, the power management module and the first antenna circuit and used for receiving the instruction sent by the control module and generating an alternating magnetic field or closing the magnetic field through the first antenna circuit according to the instruction.
6. The device of claim 5, wherein the NFC chip is further configured to send a heartbeat packet request to a card via an alternating magnetic field generated by the first antenna circuit.
7. The device of claim 2, wherein the transceiver module further comprises a receive circuit;
the receiving circuit is connected with the control module, the power management module and the first antenna circuit, and is used for receiving the fingerprint comparison result data sent by the card through the first antenna circuit and sending the fingerprint comparison result data to the control module; and the control module is also used for receiving the heartbeat packet sent by the card and sending the heartbeat packet to the control module.
8. The apparatus of claim 7, wherein the receive circuit comprises: a detection circuit;
the detection circuit is connected with the first antenna circuit, the control module and the power management module and is used for receiving alternating current of a non-connected magnetic field, which is sent by the first antenna circuit; and the control module is used for processing the received alternating current to obtain a digital signal and sending the digital signal to the control module.
9. The apparatus of claim 1, wherein the control module comprises an MCU chip;
the MCU chip is connected with the sensing circuit module and the transceiving module and is used for acquiring signals sensed by the sensing circuit module and judging whether a card exists according to the acquired signals; the fingerprint card reader is also used for sending a command of opening a non-receiving field to the transceiver module when detecting that the card exists, so as to provide field intensity for the fingerprint card; and the controller is also used for sending a command of closing the non-field receiving module to the transceiver module after the field is opened and when the preset time is reached.
10. The device of claim 1, wherein the sensing circuit module comprises a second antenna circuit and a first peripheral circuit;
the second antenna circuit is connected with the first peripheral circuit and used for sensing alternating current generated by a non-connected magnetic field emitted by the card reader;
the first peripheral circuit is connected with the control module and used for converting the alternating current into direct current;
the control module is connected with the first peripheral circuit and used for collecting the direct current and judging whether a card exists according to the collected direct current.
11. The apparatus of claim 10, wherein the first peripheral circuit comprises a rectifier circuit and a filter voltage divider circuit;
the rectifying circuit is connected with the second antenna circuit and the filtering voltage division circuit;
the filtering voltage division circuit is connected with the control module and the rectifying circuit.
12. The apparatus of claim 1, wherein the sensing circuit module comprises a second antenna circuit, an electrode circuit, and a second peripheral circuit;
the second antenna circuit is connected with the electrode circuit and the second peripheral circuit and used for inducing a non-connected magnetic field emitted by the card reader to generate alternating current;
the electrode circuit is connected with the second antenna circuit and the second peripheral circuit and used for sensing the change of internal interelectrode capacitance electric quantity and outputting corresponding alternating current;
the second peripheral circuit is connected with the electrode circuit, the second antenna circuit and the control module and is used for converting alternating current into direct current;
the control module is connected with the second peripheral circuit and used for collecting direct current on the second peripheral circuit and judging whether a card exists according to the collected direct current.
13. The apparatus of claim 12, wherein the second peripheral circuit comprises a rectifier circuit and a filter divider circuit;
the rectifying circuit is connected with the electrode circuit and the filtering voltage division circuit;
the filtering voltage division circuit is connected with the control module and the rectifying circuit.
14. The apparatus of claim 1, wherein the control module comprises a sensor, a third peripheral circuit;
the sensor is connected with the third peripheral circuit and used for sensing the change of light intensity or magnetic field intensity and outputting a corresponding analog signal;
the third peripheral circuit is connected with the sensor and the control module and is used for converting an analog signal into a digital signal;
the control module is connected with the third peripheral circuit and used for acquiring digital signals on the third peripheral circuit and judging whether a card exists according to the acquired digital signals.
15. The apparatus of claim 14, wherein the third peripheral circuit comprises a driver chip;
the driving chip is connected with the sensor and used for converting the analog signal into a digital signal to be output when the sensor outputs a corresponding analog signal after sensing the change of the light intensity or the magnetic field intensity;
the control module is connected with the driving chip and used for collecting the digital signals output by the driving chip and judging whether the card exists according to the digital signals.
16. The device of claim 1, wherein the power management module comprises: the power management circuit comprises a voltage stabilizing chip;
and the voltage stabilizing chip is used for converting an input power supply into a rated voltage value required by the control module and the transceiver module.
17. The apparatus of claim 16, wherein the power management module further comprises: and the power supply switching circuit is used for providing at least one power supply mode.
18. The apparatus of claim 16, wherein the power management module further comprises: a power supply control circuit; the power supply control circuit is connected with the power supply management circuit, the control module and the transceiver module and is used for receiving the analog signal output by the control module and controlling the power supply output according to the analog signal.
19. The device of claim 16, wherein the power management module further comprises a power charging circuit; the power supply charging circuit is connected with the power supply management circuit;
the power charging circuit includes: a third antenna circuit, a fourth peripheral circuit, a voltage stabilizing circuit and a charging chip circuit;
the third antenna circuit is connected with the fourth peripheral circuit, the fourth peripheral circuit is connected with the voltage stabilizing circuit, and the voltage stabilizing circuit is connected with the charging chip circuit;
the third antenna circuit is used for acquiring electric energy when the card reader sends out non-contact field intensity and transmitting the electric energy to the charging chip circuit through the fourth peripheral circuit and the voltage stabilizing circuit;
the charging chip circuit is connected with the power management circuit and used for charging the power management circuit according to the electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314133.6U CN213751094U (en) | 2020-12-31 | 2020-12-31 | Card reader auxiliary equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023314133.6U CN213751094U (en) | 2020-12-31 | 2020-12-31 | Card reader auxiliary equipment |
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| CN213751094U true CN213751094U (en) | 2021-07-20 |
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| CN202023314133.6U Active CN213751094U (en) | 2020-12-31 | 2020-12-31 | Card reader auxiliary equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142873A1 (en) * | 2020-12-31 | 2022-07-07 | 飞天诚信科技股份有限公司 | Card reader auxiliary device and operating method therefor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142873A1 (en) * | 2020-12-31 | 2022-07-07 | 飞天诚信科技股份有限公司 | Card reader auxiliary device and operating method therefor |
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