CN219778279U - High-safety financial mobile terminal circuit - Google Patents

Abstract

The utility model discloses a high-security financial mobile terminal circuit, which comprises a first channel selection switch circuit, a first security processing module card slot, a second channel selection switch circuit and an IC card controller, wherein the IC card controller, the first security processing module and the second security processing module realize the security processing of contact type IC card information, reduce the operation load of a processor, thereby reducing the delay or card machine phenomenon, the first security processing module and the second security processing module can be different encryption and decoding modules, can adopt different encryption/decoding algorithms, realize the decryption and decryption of different IC cards, ensure that the information is safer, and can support more IC cards. In addition, the selection control of the channel is performed by the first channel selection switch circuit and the second channel selection switch circuit. Thus, the use of communication interfaces of the IC card controller can be reduced, so that controllers with fewer interfaces can be selected, and the cost of the IC card controller can be reduced.

Description

High-safety financial mobile terminal circuit

Technical Field

The utility model relates to the technical field of financial terminal circuits, in particular to a high-security financial mobile terminal circuit.

Background

Most of the existing POS machines, ATM machines and self-service inquiry terminal devices only support magnetic stripe cards or IC cards, but the types of cards are more and more in the prior art, and most of the cards are magnetic stripe cards, contact type IC cards and non-contact type IC cards. Thus, existing devices cannot support multiple cards to meet application requirements. In addition, in some financial terminals, the circuit is added to support various financial cards, at present, the financial terminals are all controlled by a single processor to realize the reading and safe processing of signals of various cards, and the encryption and decryption information of the contact type IC card is processed by a single safe information processor, so that when more services exist, delay or card machine phenomenon can be caused, the supportable encryption and decryption modes are relatively fewer, the actual application requirements of various encryption modes can not be met, and the use is relatively inconvenient.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present utility model is to propose a high security financial mobile terminal circuit.

In order to achieve the above object, according to an embodiment of the present utility model, a high security financial mobile terminal circuit includes:

a contact type IC card interface for contacting with the IC card;

the first input channel end of the first channel selection switch circuit is connected with the contact type IC card interface;

the first safety processing module clamping groove is used for installing a first safety processing module;

the second safety processing module clamping groove is used for installing a second safety processing module;

the first input channel end of the second channel selection switch circuit is connected with the first safety processing module clamping groove, the second input channel end of the second channel selection switch circuit is connected with the second safety processing module clamping groove, and the output channel end of the second channel selection switch circuit is connected with the second input channel end of the first channel selection switch circuit;

the IC card controller is connected with the first channel selection switch circuit and is used for reading information on the contact type IC card interface through the first channel selection switch circuit or carrying out data interaction with the first security processing module and/or the second security processing module through the first channel selection switch circuit and the second channel selection switch circuit so as to carry out security encryption and decryption information processing on the read IC card information through the first security processing module and/or the second security processing module.

Further, according to an embodiment of the present utility model, the high security financial mobile terminal circuit further includes:

the main controller is connected with the IC card controller to transmit the signals processed by the secure encryption and decryption information to the main controller;

and the wired and wireless communication module is used for transmitting the information of the IC card to the remote server in a wired or wireless mode by the main controller so as to process financial data.

Further, according to an embodiment of the present utility model, the first channel selection switch circuit includes:

the first channel selector is a two-channel selector, and each channel is provided with four signal ends;

and the first channel selector is connected with the main controller through the first channel selection control circuit so as to perform channel selection control under the control of the main controller.

Further, according to an embodiment of the present utility model, the first channel selection control circuit includes:

a first resistor (R0909), one end of the first resistor (R0909) is connected to a control end of the main controller, and the other end of the first resistor (R0909) is connected to a first channel control end and a second channel control end of the first channel selector;

-a second resistor (R0910), one end of said second resistor (R0910) being connected to said other end of said first resistor (R0909), the other end of said second resistor (R0910) being connected to a reference ground.

Further, according to an embodiment of the present utility model, the second channel selection switch circuit includes:

the second channel selector is a two-channel selector, and each channel is provided with four signal ends;

and the second channel selector is connected with the main controller through the second channel selection control circuit so as to perform channel selection control under the control of the main controller.

Further, according to an embodiment of the present utility model, the high security financial mobile terminal circuit further includes: a magnetic stripe card processing circuit, the magnetic stripe card processing circuit comprising: the magnetic stripe safety processing module and the magnetic stripe card reader are connected with the main controller, so that the magnetic stripe card information can be read through the magnetic stripe card reader, and the magnetic stripe card information can be safely processed through the magnetic stripe safety processing module.

Further, according to an embodiment of the present utility model, the high security financial mobile terminal circuit further includes an NFC circuit module, and the NFC circuit module includes:

the NFC controller is in communication connection with the main controller through a communication interface;

the filtering matching circuit is connected with the wireless signal receiving and transmitting end of the NFC controller so as to filter the input and output signals;

the antenna interface is connected with the filtering matching circuit and is used for being connected with a receiving and transmitting antenna so as to read data of the non-contact IC card in a wireless mode.

Further, according to an embodiment of the present utility model, the high security financial mobile terminal circuit further includes: the alarm prompt module, the alarm prompt module includes:

a speaker, the positive end of which is connected with a power supply through a third resistor (R0941);

and the collector of the triode (Q0901) is connected with the negative terminal of the loudspeaker, the emitter of the triode (Q0901) is connected with the reference ground, and the base of the triode (Q0901) is connected with a control terminal of the main controller through a third resistor (R0942) so as to carry out sound playing driving control on the loudspeaker through the triode (Q0901).

Further, according to an embodiment of the present utility model, the high security financial mobile terminal circuit further includes: a battery powered module, the battery powered module comprising:

the voltage converter is used for converting the system power supply into a first power supply;

-a first diode (D0901), the anode of the first diode (D0901) being connected to the first power supply of the voltage converter, the cathode of the first diode (D0901) drawing the first power supply;

a battery;

-a second diode (D0902), the anode of the second diode (D0902) being connected to the anode of the battery, the cathode of the second diode (D0902) being connected to the cathode of the first diode (D0901).

The high-security financial mobile terminal circuit provided by the embodiment of the utility model is connected with the first channel selection switch circuit through the IC card controller and is used for reading information on the contact type IC card interface through the first channel selection switch circuit or carrying out data interaction with the first security processing module and/or the second security processing module through the first channel selection switch circuit and the second channel selection switch circuit so as to carry out security encryption and decryption information processing on the read IC card information through the first security processing module and/or the second security processing module; the contact type IC card information security processing is realized through the IC card controller, the first security processing module and the second security processing module, the operation load of the processor U101 is reduced, and therefore delay or card machine phenomenon is reduced, the first security processing module and the second security processing module can be different encryption and decoding modules, different encryption/decoding algorithms can be adopted, decryption and decryption of different IC cards are realized, information is safer, and more IC cards can be supported. In addition, the selection control of the channel is performed by the first channel selection switch circuit and the second channel selection switch circuit. Thus, the use of communication interfaces of the IC card controller can be reduced, so that controllers with fewer interfaces can be selected, and the cost of the IC card controller can be reduced.

Drawings

FIG. 1 is a block diagram of a high security financial mobile terminal according to an embodiment of the present utility model;

FIG. 2 is a circuit diagram of a main controller according to an embodiment of the present utility model;

FIG. 3 is a circuit diagram of an IC card controller according to an embodiment of the present utility model;

FIG. 4 is a circuit diagram of a first channel selection switch according to an embodiment of the present utility model;

FIG. 5 is a circuit diagram of a second channel selection switch according to an embodiment of the present utility model;

fig. 6 is a circuit diagram of a contact I C card interface according to an embodiment of the present utility model;

FIG. 7 is a circuit diagram of a first security processing module according to an embodiment of the present utility model;

FIG. 8 is a circuit diagram of a second security processing module according to an embodiment of the present utility model;

FIG. 9 is a circuit diagram of an interface of a magnetic stripe security processing module according to an embodiment of the present utility model;

FIG. 10 is a circuit diagram of a magnetic stripe card interface provided by an embodiment of the present utility model;

fig. 11 is a circuit diagram of an NFC circuit module according to an embodiment of the present utility model;

FIG. 12 is a circuit diagram of an alarm prompting module according to an embodiment of the present utility model;

fig. 13 is a circuit diagram of a battery power module according to an embodiment of the utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

In order to enable those skilled in the art to better understand the present utility model, the following description will make clear and complete descriptions of the technical solutions according to the embodiments of the present utility model with reference to the accompanying drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 to 8, the present utility model provides a high security financial mobile terminal circuit, comprising: the device comprises a contact type IC card interface, a first channel selection switch circuit, a first safety processing module card slot, a second channel selection switch circuit and an IC card controller, wherein the contact type IC card interface is used for contacting with an IC card; as shown in fig. 6, the contact type IC card interface J0901 may be used to contact a contact type IC card, thereby outputting read IC card information through a signal interface.

A first input channel end of the first channel selection switch circuit is connected with the contact type IC card interface; as shown in fig. 4, the first channel selection switch circuit includes: the first channel selector U0903 is a two-channel selector, and each channel has four signal terminals; for example, the first channel is connected to the contact type IC card interface J0901 via ic_scanrst, ic_scandclk, ic_ SCARDDATA and ic_cvcc signal terminals. The second channel is connected to the second channel selection switch circuit via psam_ SCARDRST, PSAM _ SCARDCLK, PSAM _ SCARDDATA and psam_cvcc signal terminals.

The first channel selector is connected with the main controller through the first channel selection control circuit so as to perform channel selection control under the control of the main controller. Specifically, as shown in fig. 4, the first channel selection control circuit includes: a first resistor 0909 and a second resistor R0910, wherein one end of the first resistor R0909 is connected with a control end of the main controller, and the other end of the first resistor R0909 is connected with a first channel control end and a second channel control end of the first channel selector; one end of the second resistor R0910 is connected to the other end of the first resistor R0909, and the other end of the second resistor R0910 is connected to the reference ground. Thus, under the control of the main controller, the input signal of the contact type IC card interface J0901 or the second channel selection switch circuit can be selectively outputted. Specifically, the main controller may output a control signal through the PC12 IC PSAM SW, and the control signal is output to the first channel control terminal INA and the second channel control terminal INB of the first channel selector U0903 through the first resistor R0909 and the second resistor R0910, respectively. When the PC12 IC PSAM SW output control signal is at a high level, the common terminals (COM 1, COM2, COM3, COM 4) of the first channel selector U0903 are respectively connected to the second channels, and the PSAM SCARDRST, PSAM SCARDCLK, PSAM SCARDDATA and PSAM CVCC signals output from the second channel selection switch circuit are selectively output. Similarly, when the PC12_ic_psam_sw output control signal is at a low level, the common terminals (COM 1, COM2, COM3, COM 4) of the first channel selector U0903 are respectively connected to the first channels, and the ic_scarrst, ic_scardclk, ic_ SCARDDATA, and ic_cvcc signals output from the contact type IC card interface J0901 are selectively output.

The first safety processing module clamping groove is used for installing a first safety processing module; the read contact type IC card information can be subjected to information security processing, such as encryption and decoding processing, by the first security processing module.

The second safety processing module clamping groove is used for installing a second safety processing module; in addition, the read contact type IC card information can be subjected to information security processing, such as encryption and decoding processing, by the second security processing module. The first security processing module and the second security processing module can be different encryption and decoding modules, and can adopt different encryption/decoding algorithms to realize decryption and decryption of different IC cards, so that the information is safer, and more IC cards can be supported.

The first input channel end of the second channel selection switch circuit is connected with the first safety processing module clamping groove, the second input channel end of the second channel selection switch circuit is connected with the second safety processing module clamping groove, and the output channel end of the second channel selection switch circuit is connected with the second input channel end of the first channel selection switch circuit; specifically, as shown in fig. 5, the second channel selection switch circuit includes: the system comprises a second channel selector U0908 and a second channel selection control circuit, wherein the second channel selector is a two-channel selector, and each channel is provided with four signal terminals; for example, the first channel is connected to the first security processing module via psam1_ SCARDRST, PSAM1_ SCARDCLK, PSAM1 _1_ SCARDDATA and psam1_cvcc signal terminals. The second channel is connected with the first security processing module through the PPSAM2_ SCARDRST, PSAM2_ SCARDCLK, PSAM2 _2_ SCARDDATA and the PSAM2_CVCC signal terminal.

The second channel selector is connected with the main controller through the second channel selection control circuit so as to perform channel selection control under the control of the main controller. Specifically, as shown in fig. 5, the second channel selection control circuit includes: a resistor R0948 and a resistor R0947, wherein one end of the resistor R0948 is connected with a control end of the main controller, and the other end of the resistor R0948 is connected with a first channel control end and a second channel control end of the second channel selector; one end of the resistor R0947 is connected to the other end of the resistor R0948, and the other end of the resistor R0947 is connected to the ground. The channel selection control process of the second channel selection control circuit is substantially the same as that of the first channel selection control circuit, and for brevity, a detailed description thereof is omitted. The first safety processing module or the second safety processing module can be selected to be communicated with the public end and the second channel end of the first channel selector U0903 through the second channel selector.

The IC card controller is connected with the first channel selection switch circuit and is used for reading information on the contact type IC card interface through the first channel selection switch circuit or carrying out data interaction with the first security processing module and/or the second security processing module through the first channel selection switch circuit and the second channel selection switch circuit so as to carry out security encryption and decryption information processing on the read IC card information through the first security processing module and/or the second security processing module.

Specifically, the IC card controller may communicate with the IC card on the contact IC card interface through the first channel selection switch circuit and the second channel selection switch circuit, read information of the IC card, and perform data interaction with the first security processing module and/or the second security processing module through the first channel selection switch circuit and the second channel selection switch circuit.

The read contact type IC card information can be subjected to information security processing, such as encryption and decoding processing, by the first security processing module or the second security processing module. In the process, the contact type IC card information is safely processed through the IC card controller, the first safety processing module and the second safety processing module, and the operation load of the processor U101 is reduced, so that delay or card machine phenomenon is reduced, the first safety processing module and the second safety processing module can be different encryption and decoding modules, different encryption/decoding algorithms can be adopted, decryption and decryption of different IC cards are realized, information is safer, and more IC cards can be supported. In addition, the selection control of the channel is performed by the first channel selection switch circuit and the second channel selection switch circuit. Thus, the use of communication interfaces of the IC card controller can be reduced, so that controllers with fewer interfaces can be selected, and the cost of the IC card controller can be reduced.

Referring to fig. 1, the high security financial mobile terminal circuit further includes: the main controller is connected with the IC card controller to transmit the signal processed by the secure encryption and decryption information to the main controller U0901; as shown in fig. 2 and 3, the main controller U0901 is connected to the IC card controller U0902 through sci0_io, sci0_clk, sci0_rstn to realize data transmission of the main controller U0901 and the IC card controller U0902. After the IC card controller U0902 completes the information security processing of the IC card information, the IC card controller transmits the information acquired from the first security processing module or the second security processing module to the main controller U0901 to further perform the information processing by the main controller U0901.

The main controller transmits the information of the IC card to a remote server in a wired or wireless mode to process financial data. The wired/wireless communication module is used for connecting with the Internet so as to carry out data interaction between the acquired IC card data and the server. After the information of the IC card is read and encrypted and decrypted, the main controller U0901 can communicate with the server in a wired or wireless mode to realize data interaction, so that the cost processing of the account corresponding to the IC card is realized.

Referring to fig. 1, 9 and 10, the high security financial mobile terminal circuit further includes: a magnetic stripe card processing circuit, the magnetic stripe card processing circuit comprising: the magnetic stripe safety processing module and the magnetic stripe card reader are connected with the main controller, so that the magnetic stripe card information can be read through the magnetic stripe card reader, and the magnetic stripe card information can be safely processed through the magnetic stripe safety processing module.

As shown in fig. 7, in one embodiment of the utility model, the magnetic stripe security processing module is connected to the main controller U0901 via an interface J0905. That is, the magnetic stripe security processing module is installed in the interface J0905, and performs signal transmission between the signal lines of pb0_sam_scl, pb5_sam_sda, pb7_sam_rxfrme, pb6_sam_txfrme, uart2_tx, and uart2_rx and the main controller U0901. The main controller U0901 may further obtain magnetic stripe card information through the magnetic stripe card reader, the magnetic stripe card reader is installed IN the interface J0904, and is connected to the main controller U0901 through msr_in1, msr_in2, msr_in3, msr_in4, msr_in5 and msr_in6, and the main controller U0901 obtains magnetic stripe card information through the magnetic stripe card reader provided on the interface J0904, and performs security processing, such as encryption and decoding processing, on the magnetic stripe card information through the magnetic stripe security processing module provided on the interface J0905. After the information security processing is completed, the main controller U0901 performs data interaction with the remote server, so that the fee processing of the account corresponding to the magnetic stripe card is realized.

Referring to fig. 1 and 11, the high security financial mobile terminal circuit further includes an NFC circuit module, and the NFC circuit module includes: NFC controller U0904, filter matching circuit and antenna interface, NFC controller pass through communication interface with the communication connection of main control unit; as shown in fig. 5, the NFC controller U0904 is connected to the master controller U0901 through nfc_nrstpd, nfc_irq, nfc_spi0_cs, SPI0_miso, SPI0_mosi, and SPI0_sclk signal lines, respectively, to enable signal transmission between the NFC controller U0904 and the master controller U0901.

The filtering matching circuit is connected with the wireless signal receiving and transmitting end of the NFC controller so as to filter input and output signals; the filter matching circuit can be used for carrying out EMC filtering and signal matching on radio frequency signals of the receiving and transmitting antenna. At 13.56MHz NFC transmits electromagnetic signals through near field coupling, when current flows through an antenna of a reader-writer, a magnetic field proportional to the number of turns and the area of the coil is generated, and a time-varying magnetic field passes through a closed space of an NFC card coil to generate induced voltage, so that energy and signals are transmitted. In order to make the radio frequency signal output by the chip be transmitted to the antenna end most efficiently, a matching circuit needs to be designed to be matched with the antenna in a conjugate way.

The antenna interface is connected with the filtering matching circuit and is used for being connected with a receiving and transmitting antenna so as to read data of the non-contact IC card in a wireless mode. The receiving and transmitting antenna can be used for receiving and transmitting wireless signals, so that the IC can read information.

Referring to fig. 1 and 12, the high security financial mobile terminal circuit further includes: the alarm prompt module, the alarm prompt module includes: the positive end of the loudspeaker is connected with a power supply through a third resistor R0941; the collector of the triode Q0901 is connected with the negative terminal of the loudspeaker BZ0901, the emitter of the triode Q0901 is connected with the reference ground, and the base of the triode Q0901 is connected with a control terminal of the main controller through a third resistor R0942 to carry out sound playing driving control on the loudspeaker through the triode Q0901. Specifically, the loudspeaker BZ0901 may be driven to emit sound through the triode Q0901, and the loudspeaker BZ0901 may be driven to emit sound after the control signal PA3_beep_ctl output from the main controller U0901 is amplified through the triode Q0901 because the signal output from the main controller U0901 is relatively weak and the loudspeaker BZ0901 cannot be driven to emit loud sound. When the control signal pa3_beep_ctl output from the main controller U0901 is a high level signal, the collector and emitter of the transistor Q0901 are conductive to each other, and the speaker BZ0901 emits a sound.

Referring to fig. 1 and 13, the high security financial mobile terminal circuit further includes: a battery powered module, the battery powered module comprising: a voltage converter, a first diode D0901, a battery and a second diode D0902, the voltage converter being for converting a system power supply into a first power supply; the anode of the first diode D0901 is connected with the first power supply of the voltage converter, and the cathode of the first diode D0901 leads out the first power supply; the anode of the second diode D0902 is connected to the anode of the battery, and the cathode of the second diode D0902 is connected to the cathode of the first diode D0901. Specifically, the battery power supply module can support external power supply or battery power supply. When the external power supply supplies power, the introduced power is input to the power output end VIN of the voltage converter U0905, and after the voltage conversion by the voltage converter U0905, the VBAT33 power supply is output by the first diode D0901. When the battery is powered, the power supply of the battery is led out through the second diode D0902. And through the unidirectional conductivity of the first diode D0901 and the second diode D0902, the power supply between the external power supply device and the battery can be prevented from being mutually charged, and the damage to the external power supply device and the battery can be prevented.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (9)

1. A high security financial mobile terminal circuit, comprising:

a contact type IC card interface for contacting with the IC card;

the first input channel end of the first channel selection switch circuit is connected with the contact type IC card interface;

the first safety processing module clamping groove is used for installing a first safety processing module;

the second safety processing module clamping groove is used for installing a second safety processing module;

the first input channel end of the second channel selection switch circuit is connected with the first safety processing module clamping groove, the second input channel end of the second channel selection switch circuit is connected with the second safety processing module clamping groove, and the output channel end of the second channel selection switch circuit is connected with the second input channel end of the first channel selection switch circuit;

the IC card controller is connected with the first channel selection switch circuit and is used for reading information on the contact type IC card interface through the first channel selection switch circuit or carrying out data interaction with the first security processing module and/or the second security processing module through the first channel selection switch circuit and the second channel selection switch circuit so as to carry out security encryption and decryption information processing on the read IC card information through the first security processing module and/or the second security processing module.

2. The high security financial mobile terminal circuit of claim 1, further comprising:

the main controller is connected with the IC card controller to transmit the signals processed by the secure encryption and decryption information to the main controller;

and the wired and wireless communication module is used for transmitting the information of the IC card to the remote server in a wired or wireless mode by the main controller so as to process financial data.

3. The high security financial mobile terminal circuit of claim 2, wherein the first channel selection switch circuit comprises:

the first channel selector is a two-channel selector, and each channel is provided with four signal ends;

and the first channel selector is connected with the main controller through the first channel selection control circuit so as to perform channel selection control under the control of the main controller.

4. The high security financial mobile terminal circuit of claim 3, wherein the first channel selection control circuit comprises:

a first resistor (R0909), one end of the first resistor (R0909) is connected to a control end of the main controller, and the other end of the first resistor (R0909) is connected to a first channel control end and a second channel control end of the first channel selector;

-a second resistor (R0910), one end of said second resistor (R0910) being connected to said other end of said first resistor (R0909), the other end of said second resistor (R0910) being connected to a reference ground.

5. The high security financial mobile terminal circuit of claim 2, wherein the second channel selection switch circuit comprises:

the second channel selector is a two-channel selector, and each channel is provided with four signal ends;

and the second channel selector is connected with the main controller through the second channel selection control circuit so as to perform channel selection control under the control of the main controller.

6. The high security financial mobile terminal circuit of claim 2, further comprising: a magnetic stripe card processing circuit, the magnetic stripe card processing circuit comprising: the magnetic stripe safety processing module and the magnetic stripe card reader are connected with the main controller, so that the magnetic stripe card information can be read through the magnetic stripe card reader, and the magnetic stripe card information can be safely processed through the magnetic stripe safety processing module.

7. The high security financial mobile terminal circuit of claim 2, further comprising an NFC circuit module comprising:

the NFC controller is in communication connection with the main controller through a communication interface;

the filtering matching circuit is connected with the wireless signal receiving and transmitting end of the NFC controller so as to filter the input and output signals;

the antenna interface is connected with the filtering matching circuit and is used for being connected with a receiving and transmitting antenna so as to read data of the non-contact IC card in a wireless mode.

8. The high security financial mobile terminal circuit of claim 2, further comprising: the alarm prompt module, the alarm prompt module includes:

a speaker, the positive end of which is connected with a power supply through a third resistor (R0941);

and the collector of the triode (Q0901) is connected with the negative terminal of the loudspeaker, the emitter of the triode (Q0901) is connected with the reference ground, and the base of the triode (Q0901) is connected with a control terminal of the main controller through a third resistor (R0942) so as to carry out sound playing driving control on the loudspeaker through the triode (Q0901).

9. The high security financial mobile terminal circuit of claim 1, further comprising: a battery powered module, the battery powered module comprising:

the voltage converter is used for converting the system power supply into a first power supply;

-a first diode (D0901), the anode of the first diode (D0901) being connected to the first power supply of the voltage converter, the cathode of the first diode (D0901) drawing the first power supply;

a battery;

-a second diode (D0902), the anode of the second diode (D0902) being connected to the anode of the battery, the cathode of the second diode (D0902) being connected to the cathode of the first diode (D0901).