Alternating current control circuit and alternating current control method of near field communication receiving equipment

Abstract

The invention discloses an alternating current control circuit and an alternating current control method of near field communication receiving equipment. The circuit comprises a rectification module which is connected with a driving coil and is used for converting an initial AC signal generated by the driving coil into a DC signal; the voltage regulating module is connected with the rectifying module and is used for performing voltage conversion on the direct-current signal to obtain a target direct-current signal; the inversion module is connected with the voltage regulation module and is used for converting the target direct current signal into a target alternating current signal and outputting the target alternating current signal to an alternating current load; and the safety element SE is respectively connected with the driving coil, the voltage regulating module and the inversion module, and is used for generating a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inversion module according to the transaction data under the condition of receiving the transaction data. According to the embodiment of the invention, passive stable boosting can be realized in a limited space, and the magnitude and the stability of the voltage flowing into the alternating load are ensured.

Description

Technical Field

[0001] The present application belongs to the field of computer technology, and specifically relates to an AC control circuit and an AC control method for a near field communication receiving device. Background Art

[0002] With the development of science and technology, Near Field Communication (NFC) technology has been widely used in various scenarios due to its convenience, security, operability and low cost. For example, NFC technology can be used in mobile payment, access control, bus card swiping, smart home and other scenarios.

[0003] In the related art, when the NFC receiving device is close to the NFC transmitting device, the coil in the NFC receiving device gradually enters the magnetic field of the NFC transmitting device, thereby providing the required power to the NFC receiving device. It is understandable that in order to ensure the performance and service life of each component in the NFC receiving device, it is usually necessary to adjust the voltage in the NFC receiving device to an appropriate value and ensure the stability of the voltage.

[0004] However, due to the size and safety requirements of the NFC receiving device, it is not advisable to add a built-in battery or a transformer to the NFC receiving device. Therefore, how to adjust the voltage in the NFC receiving device to ensure the performance and life of each component in the NFC receiving device is a technical problem that needs to be solved urgently by relevant technicians. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide an AC control circuit and an AC control method for a near field communication receiving device, so as to achieve stable adjustment of the voltage in the NFC receiving device.

[0006] In the first aspect, an embodiment of the present application provides an AC control circuit of a near-field communication receiving device, comprising: a rectifier module connected to a drive coil, for converting an initial AC signal generated by the drive coil into a DC signal; a voltage regulator module connected to the rectifier module, for converting the DC signal into a voltage to obtain a target DC signal; an inverter module connected to the voltage regulator module, for converting the target DC signal into a target AC signal, and outputting the target AC signal to an AC load; a safety element SE, respectively connected to the drive coil, the voltage regulator module and the inverter module, for generating a first control signal corresponding to the voltage regulator module and a second control signal corresponding to the inverter module according to the transaction data when transaction data is received.

[0007] In one implementation, the SE includes a first signal interface and a second signal interface; the first signal interface is connected to the voltage regulating module for transmitting a first control signal; the second signal interface is connected to the inverter module for transmitting a second control signal.

[0008] In one embodiment, the voltage regulating module includes: an inductor unit, connected to the rectifier module; a first switch unit, a first end of the first switch unit is connected to the inductor unit, a second end of the first switch unit is grounded, and a control end of the first switch unit is connected to the SE, and is used to control the state of the first switch unit according to the first control signal when receiving a first control signal sent by the SE, and the state includes an on state and an off state; a first unidirectional conduction unit, a first end of the first unidirectional conduction unit is connected to the inductor unit, and a second end of the unidirectional conduction unit is connected to the inverter module; and a first voltage stabilizing unit, a first end of the first voltage stabilizing unit is connected to the inverter module; the second end of the first voltage stabilizing unit is grounded.

[0009] In one embodiment, the inductor unit includes a first inductor, a first end of the first inductor is connected to the rectifier module, the first switch unit includes a transistor, a first end of the transistor is connected to the second end of the first inductor, the second end of the transistor is grounded, and the control end of the transistor is connected to SE; the first unidirectional conduction unit includes a diode, an anode of the diode is connected to the second end of the first inductor, and a cathode of the diode is connected to the inverter module; the voltage stabilizing unit includes a first capacitor, a first end of the first capacitor is connected to the cathode of the diode; and the second end of the first capacitor is grounded.

[0010] In one embodiment, the inverter module includes: a first bridge arm group, the first bridge arm group includes a first upper bridge arm and a first lower bridge arm, the first end of the first upper bridge arm is connected to the voltage regulating module, the second end of the first upper bridge arm is connected to the first end of the first lower bridge arm, and the second end of the first lower bridge arm is grounded; a second bridge arm group, the second bridge arm group includes a second upper bridge arm and a second lower bridge arm, the first end of the second upper bridge arm is connected to the first end of the first upper bridge arm, the second end of the second upper bridge arm is connected to the first end of the second lower bridge arm, and the second end of the second lower bridge arm is connected to the second end of the first lower bridge arm; and the control end of the first upper bridge arm, the control end of the first lower bridge arm, the control end of the second upper bridge arm, and the control end of the second lower bridge arm are all connected to the SE.

[0011] In one embodiment, the first upper bridge arm, the first lower bridge arm, the second upper bridge arm and the second lower bridge arm include a triode and a unidirectional conduction unit; or, the first upper bridge arm, the first lower bridge arm, the second upper bridge arm and the second lower bridge arm all include a semiconductor field effect transistor.

[0012] In one implementation, the circuit further includes a waveform conversion module; a first end of the waveform conversion module is connected to the inverter module, and a second end of the waveform conversion module is used to connect to an AC load.

[0013] In a second aspect, an embodiment of the present application provides an AC control method, which is applied to an AC control circuit of a near-field communication receiving device such as in the first aspect or any one of the embodiments of the first aspect, and the method includes: receiving transaction data; generating a first control signal corresponding to a voltage regulating module and a second control signal corresponding to an inverter module based on the transaction data; outputting a first control signal to the voltage regulating module so that the voltage regulating module changes the voltage of a DC signal output by a rectifier module according to the first control signal to obtain a target DC signal; outputting a second control signal to the inverter module so that the inverter module converts the voltage of the target DC signal according to the second control signal to obtain a target AC signal, and outputs the target AC signal to an AC load.

[0014] In one embodiment, a first control signal corresponding to a voltage regulating module and a second control signal corresponding to an inverter module are generated based on transaction data, including: determining operating condition information corresponding to an AC load based on the transaction data; determining a first control signal and a second control signal matching the operating condition information based on a preset first corresponding relationship, wherein the first preset corresponding relationship represents a corresponding relationship between different operating condition information and the first control signal and the second control signal.

[0015] In one embodiment, outputting a first control signal to the voltage regulating module includes: outputting the first control signal to the voltage regulating module through a first signal interface; outputting a second control signal to the inverter module includes: outputting the second control signal to the inverter module through a second signal interface.

[0016] In one embodiment, the first control signal includes a first signal adjustment frequency and a first signal duty cycle, the first signal adjustment frequency is used to characterize the first signal period of the first control signal, and the first signal duty cycle is used to characterize the ratio of the time corresponding to the high level and the first signal period; the second control signal includes a second signal adjustment frequency and a second signal duty cycle, the second signal adjustment frequency is used to characterize the second signal period of the second control signal, and the second signal duty cycle is used to characterize the ratio of the time corresponding to the high level and the second signal period.

[0017] In a third aspect, an embodiment of the present application provides an AC control device, comprising:

[0018] A receiving module, used for receiving transaction data;

[0019] A generating module, used for generating a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data;

[0020] A first output module, configured to output a first control signal to the voltage regulating module, so that the voltage regulating module changes the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal;

[0021] The second output module is used to output a second control signal to the inverter module, so that the inverter module converts the target DC signal into a target AC signal according to the second control signal, and outputs the target AC signal to the AC load.

[0022] In a fourth aspect, an embodiment of the present application provides an AC control device, comprising: a processor, and a memory storing computer program instructions; when the processor executes the computer program instructions, the AC control method in the second aspect or any one of the embodiments of the second aspect is implemented.

[0023] In a fifth aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the AC control method in the second aspect or any one of the embodiments of the second aspect is implemented.

[0024] In a sixth aspect, an embodiment of the present application provides a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes an AC control method as described in the second aspect or any one of the embodiments of the second aspect.

[0025] In the embodiment of the present application, the original AC signal is converted into a DC signal through a rectifier circuit, and a first control signal is sent to the voltage regulating module through the SE. The voltage regulating module can change the voltage of the DC signal based on the first control signal, so that the DC voltage can be adjusted to obtain the voltage value required by the AC load. In addition, the SE can also send a second control signal to the inverter module, and the inverter module converts the voltage based on the second control signal to ensure that the DC signal can be converted into an AC signal, thereby driving the AC load. It can be understood that through the embodiment of the present application, the magnitude and stability of the voltage input to the alternating load can be guaranteed, thereby ensuring the performance and service life of the alternating load. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the architecture of an NFC communication device provided in an embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by an embodiment of the present application;

[0028] Figure 3 It is a schematic diagram of the architecture of an AC signal adjustment circuit provided by an embodiment of the present application;

[0029] Figure 4 is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application;

[0030] Figure 5is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application;

[0031] Figure 6 is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application;

[0032] Figure 7 is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application;

[0033] Figure 8 is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application;

[0034] Fig. 9 It is a flow chart of an AC control method provided in an embodiment of the present application;

[0035] Fig.10 It is a flow chart of an AC control method provided in an embodiment of the present application;

[0036] Fig.11 is a structural schematic diagram of an AC control device provided in an embodiment of the present application;

[0037] Fig.12 It is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100, NFC communication device; 110, NFC transmitting device; 120, NFC receiving device;

[0040] 200, AC control circuit; 210, rectifier module; 220, drive coil; 230, voltage regulating module; 231, inductor unit; 232, first switch unit; 233, first unidirectional conduction unit; 234, first voltage stabilizing unit; 240, inverter module; 241, first bridge arm group; 2411, first upper bridge arm; 2412, first lower bridge arm; 242, second bridge arm group;

[0041] 2421, second upper bridge arm; 2422, second lower bridge arm; 250, safety element; 260, waveform conversion module;

[0042] 300, AC signal adjustment circuit; 310, inverter bridge; 320, transformer; 321, primary coil; 322, secondary coil;

[0043] C1, first capacitor; D1, diode; D2, second diode; D3, third diode; D4, fourth diode; D5, fifth diode; L1, first inductor; Q1, transistor; Q2, second triode; Q3, third triode;

[0044] Q4, the fourth transistor; Q5, the fifth transistor. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] With the popularization of mobile Internet and smart phones, people's demand for short-range wireless communication is growing. For example, in the fields of mobile payment, access control, public transportation, etc., users expect to be able to quickly exchange and identify information through a convenient and secure technology. NFC technology just meets these needs. Figure 1 As shown, Figure 11 is a schematic diagram of the architecture of an NFC communication device provided in an embodiment of the present application, wherein the NFC communication device 100 includes an NFC transmitting device 110 and an NFC receiving device 120. The NFC transmitting device 110 generates an alternating magnetic field by deploying an internal circuit thereof. When the NFC receiving device 120 is close to the NFC transmitting device 110, the coil in the NFC receiving device 120 enters the alternating magnetic field and generates an induced electromotive force, i.e., a voltage. Furthermore, the NFC receiving device 120 drives various components inside the device through the voltage generated by the coil, thereby ensuring that the NFC receiving device 120 can realize its functions.

[0048] In one example, the NFC transmitting device 110 may be an NFC card reader, and the NFC receiving device 120 may be a bank card. The NFC card reader may generate a high-frequency electromagnetic field around itself through an internal circuit, such as a 13.56 MHz magnetic field, so that when the bank card is close to the NFC card reader, the secure element (SE) inside the bank card can be activated, and the payment function of the bank card can be realized through information interaction between the secure element and the NFC card reader. In addition, there may also be corresponding loads in the bank card, such as a light emitting diode (LED), and the light emitting diode is powered by the electric energy generated by the bank card passing through the high-frequency electromagnetic field to ensure that the light emitting diode can be lit. It is understandable that the NFC transmitting device 110 may also be a mobile smart device that supports the NFC card reading function and a car that supports the NFC card reading function; the NFC receiving device 120 may also be a wearable smart device, a smart card, and an Internet of Things (IoT) device. Therefore, in the embodiment of the present application, the NFC transmitting device 110 and the NFC receiving device 120 are not limited.

[0049] Furthermore, in order to ensure the performance and service life of each component in the NFC receiving device 120, it is usually necessary to adjust the voltage in the NFC receiving device 120 to an appropriate size and ensure the stability of the voltage. On this basis, the technicians considered that a built-in battery could be added to the NFC receiving device 120 to power each component in the NFC receiving device 120. However, if a built-in battery is set in the NFC receiving device 120, the safety of the NFC receiving device 120 will be affected by the built-in battery. For example, if a battery leak occurs, there will be safety hazards in the entire NFC receiving device 120. Further, the technicians considered that a boost circuit could be set inside the NFC receiving device 120, such as adding a transformer to the NFC receiving device 120, so as to amplify the voltage generated by the NFC receiving device 120 through the alternating magnetic field, so as to drive the load in the NFC receiving device 120 to work normally.

[0050] However, based on the working principle of the transformer, the voltage output by the transformer is affected by the voltage of the input voltage. For example, when the input voltage is 3 volts (V), the voltage can be increased to 200V through the transformer, and when the input voltage is 6V, the voltage can be increased to 400V through the same transformer, which may cause damage to the components in the NFC receiving device 120.

[0051] In summary, the related art cannot achieve stable adjustment of the voltage in the NFC receiving device 120. Therefore, how to achieve stable adjustment of the voltage in the NFC receiving device 120 to ensure the performance and life of each component in the NFC receiving device 120 is a technical problem that needs to be solved urgently by related technicians.

[0052] In order to solve the technical problems in the related art, the embodiments of the present application provide an AC control circuit and an AC control method of a near field communication receiving device, which can achieve stable adjustment of the voltage in the NFC receiving device.

[0053] Figure 2 FIG. 1 is a schematic diagram of the architecture of an AC control circuit of a near field communication receiving device provided by an embodiment of the present application. Figure 2 As shown, the AC control circuit 200 of the near field communication receiving device includes a rectifier module 210, which is connected to the drive coil 220 and is used to convert the initial AC signal generated by the drive coil 220 into a DC signal; a voltage regulator module 230, which is connected to the rectifier module 210 and is used to convert the DC signal into a voltage to obtain a target DC signal; an inverter module 240, which is connected to the voltage regulator module 230 and is used to convert the target DC signal into a target AC signal and output the target AC signal to an AC load; a safety element 250, which is respectively connected to the drive coil 220, the voltage regulator module 230 and the inverter module 240, and is used to generate a first control signal corresponding to the voltage regulator module 230 and a second control signal corresponding to the inverter module 240 according to the transaction data when transaction data is received.

[0054] Exemplarily, the driving coil 220 can power the AC control circuit 200 provided in the NFC receiving device 120. It is understandable that after the driving coil 220 enters the magnetic field generated by the NFC transmitting device 110, according to the law of electromagnetic induction, the driving coil 220 can generate an initial AC signal, that is, AC power, to power the AC control circuit 200.

[0055] Exemplarily, the rectifier module 210 may be used to convert the initial AC signal generated by the driving coil 220 into a DC signal. In one example, the rectifier module 210 may include a bridge rectifier circuit.

[0056] Exemplarily, the voltage regulating module 230 is connected to the rectifying module 210 , so as to perform voltage conversion on the DC signal output by the rectifying module 210 to obtain a target DC signal.

[0057] In one example, the voltage regulating module 230 may be a boost module, which can amplify the DC signal to obtain an amplified target DC signal.

[0058] In another example, the voltage regulating module 230 may also be a voltage reducing module, which reduces the DC signal to obtain a target DC signal after voltage increase.

[0059] Exemplarily, the inverter module 240 is connected to the voltage regulating module 230, and can convert the target voltage between the target signals output by the voltage regulating module 230 to obtain the target AC voltage. In addition, the inverter module 240 can also be connected to an AC load, so as to supply power to the AC load.

[0060] The AC load may be a device driven by an AC signal. In one example, the AC load may be an AC display device, such as a display screen driven by an AC signal. In another example, the AC load may also be an electroluminescent film (EL). It is understood that applying an AC signal to both ends of the EL film generates an electric field, thereby stimulating the fluorescent material in the EL film to emit light. This light-emitting method is different from the traditional thermal radiation light source. It does not need to reach a high temperature to make the light-emitting film emit light, has better efficiency, and does not generate excessive heat.

[0061] Exemplarily, the safety element 250 can be connected to the driving coil 220, the voltage regulating module 230 and the inverter module 240 respectively. The driving coil 220 can supply power to the safety element 250. After the safety element 250 is activated by the electrical signal generated by the driving coil 220, the safety element 250 can control the corresponding functions of the voltage regulating module 230 and the inverter module 240. For example, when the voltage regulating module 230 is a boost module, the safety element 250 can send different control signals to the boost module, so that the boost module amplifies the DC signal by different multiples, thereby achieving flexible adjustment.

[0062] In some optional embodiments, the safety element 250 may include a first signal interface and a second signal interface, wherein the first signal interface is connected to the voltage regulating module for transmitting the first control signal, and the second signal interface is connected to the inverter module for transmitting the second control signal.

[0063] In one example, the first signal interface and the second signal interface may be unoccupied signal interfaces in the security element 250 .

[0064] In one example, the first signal interface and the second signal interface may be different input / output (I / O) interfaces in the safety element 250 , connected to the voltage regulating module 230 and the inverter module 240 .

[0065] It can be understood that by using the idle signal interface in the security element to transmit control signals to the voltage regulating module 230 and the inverter module 240, the idle resources in the security element can be fully utilized, and the space of the NFC receiving device can be saved while improving the overall performance of the security element.

[0066] The security element 250 can establish a communication connection with the NFC transmitting device 110, thereby ensuring that data can be transmitted between the security element 250 and the NFC transmitting device 110. For example, the security element 250 can establish a communication connection with the NFC transmitting device 110 based on the contactless IC card standard protocol, that is, the ISO / IEC 14443 protocol. Among them, the protocol used to establish a communication connection between the security element 250 and the NFC transmitting device 110 may also include a logical link control protocol (Logical Link Control Protocol, LLCP), an NFC controller interface (NFC Controller Interface, NCI), etc., which is not limited in the embodiments of the present application.

[0067] Furthermore, after the security element 250 establishes a communication connection with the NFC transmitter 110, it can receive a data processing request sent by the NFC, and generate a first control signal of the voltage regulating module 230 and a second control signal of the inverter module 240 corresponding to the transaction data according to a preset first corresponding relationship. The preset first corresponding relationship represents the corresponding relationship between different transaction data and the first control signal and the second control signal.

[0068] In one example, the security element 250 may be an SE in a bank card. The SE has functions such as receiving transaction data and processing the transaction data. After receiving the transaction data, the SE may parse the transaction data content, and determine the workflow of the load in the bank card represented by the transaction data based on the parsed content, and then generate a control signal to drive the load. For example, after receiving the transaction data, the SE may determine that the transaction data indicates "payment successful", and then the SE may determine the control signal corresponding to the load light, such as EL.

[0069] To better understand the beneficial effects of the embodiments of the present application, the beneficial effects of the embodiments of the present application are described below in combination with the prior art. First, due to the size of the NFC receiving device 120 itself, when deploying the circuit in the NFC receiving device 120, the number and size of components in the circuit structure need to be considered. Figure 3is a schematic diagram of the architecture of an AC signal adjustment circuit provided by an embodiment of the present application, such as Figure 3 As shown, the AC signal adjustment circuit 300 may include an inverter bridge 310 and a transformer 320, wherein the transformer 320 may include a primary coil 321 and a secondary coil 322. The AC signal adjustment circuit 300 may be deployed in the NFC receiving device 120. It can be understood that the input signal Vin may be a DC signal, and the DC signal is converted into an AC signal by the inverter bridge 310, and the AC signal is input into the primary coil 321, so that an alternating magnetic field is generated in the primary coil 321, and then an alternating voltage Vout is induced in the secondary coil 322. It can be understood that since the turns ratio between the primary coil 321 and the secondary coil 322 is fixed, the transformer 320 has a fixed voltage transformation capability for the AC signal. For example, when Vin is 3V, the Vout output by the AC signal adjustment circuit 300 may be 200V, and when Vin is 6V, the Vout output by the AC signal adjustment circuit 300 may be 400V. It can be seen that the Vout output by the AC signal adjustment circuit 300 is affected by Vin. In reality, since the NFC transmitting device 110 has different specifications, the magnetic field strength generated when it is working is different, which leads to different input voltages of the AC signal adjustment circuit 300. This may cause the load in the NFC receiving device 120 to fail to work properly due to insufficient voltage, or be damaged due to excessive voltage.

[0070] In the embodiment of the present application, the original AC signal is converted into a DC signal through a rectifier circuit, and a first control signal is sent to the voltage regulating module 230 through the safety element 250. The voltage regulating module 230 can change the voltage of the DC signal based on the first control signal, so that the DC voltage can be adjusted to obtain the voltage value required by the AC load. In addition, the safety element 250 can also send a second control signal to the inverter module 240, and the inverter module 240 converts the voltage based on the second control signal to ensure that the DC signal can be converted into an AC signal, thereby driving the AC load. It can be understood that through the embodiment of the present application, using the AC control circuit, passive stable boosting can be achieved in a limited space, ensuring the size and stability of the voltage flowing into the alternating load, thereby ensuring the performance and service life of the alternating load.

[0071] Furthermore, in order to realize the voltage boosting function of the voltage regulating module 230, as another implementation of the present application, the present application also provides another implementation of the AC control circuit 200 of the near field communication receiving device, and see the following embodiments for details.

[0072] Figure 4 FIG. 2 is a schematic diagram of the architecture of an AC control circuit 200 of a near field communication receiving device provided in another embodiment of the present application. Figure 4As shown, the voltage regulating module 230 includes: an inductor unit 231, which is connected to the rectifier module 210; a first switch unit 232, a first end of the first switch unit 232 is connected to the inductor unit 231, a second end of the first switch unit 232 is grounded, and a control end of the first switch unit 232 is connected to the safety element 250, and is used to control the state of the first switch unit 232 according to the first control signal sent by the safety element 250 when receiving the first control signal, and the state includes an on state and an off state; a first unidirectional conduction unit 233, a first end of the first unidirectional conduction unit 233 is connected to the inductor unit 231, and a second end of the unidirectional conduction unit is connected to the inverter module 240; and a first voltage stabilizing unit 234, a first end of the first voltage stabilizing unit 234 is connected to the first unidirectional conduction unit 233; the second end of the first voltage stabilizing unit 234 is grounded.

[0073] In some optional embodiments, the inductor unit 231 may include a first inductor L1, and a first end of the first inductor L1 is connected to the rectifier module 210. The first switch unit 232 includes a transistor Q1, a first end of the transistor Q1 is connected to a second end of the first inductor L1, a second end of the transistor Q1 is grounded GND, and a control end of the transistor Q1 is connected to the safety element 250. The first unidirectional conduction unit 233 includes a diode D1, an anode of the diode D1 is connected to the second end of the first inductor L1, and a cathode of the diode D1 is connected to the inverter module 240. The voltage stabilizing unit includes a first capacitor C1, a first end of the first capacitor C1 is connected to the cathode of the diode D1, and a second end of the first capacitor C1 is grounded GND.

[0074] Exemplarily, the transistor Q1 may be a metal-oxide-semiconductor field-effect transistor (MOSFET), that is, a MOS tube; or the transistor Q1 may also be a triode.

[0075] Next, combine Figure 5 The following example illustrates the voltage regulator module.

[0076] Figure 5 FIG. 2 is a schematic diagram of the architecture of an AC control circuit 200 of a near field communication receiving device provided in another embodiment of the present application. Figure 5 As shown, the voltage regulating module 230 includes a first inductor L1, a transistor Q1, ( Figure 5Taking an NPN transistor as an example for explanation), a diode D1 and a first capacitor C1. It can be understood that when the transistor Q1 receives a high-level signal sent by the safety element 250, the transistor Q1 is turned on, and the input voltage starts to charge the first inductor L1. At this time, the electric energy in the first inductor L1 gradually increases, and at this stage, the diode D1 is in a reverse cut-off state, which can prevent the first capacitor C1 from discharging to the ground. When the transistor Q1 receives a low-level signal sent by the safety element 250, the transistor Q1 is turned off, and at this time, the first inductor L1 maintains the current direction unchanged, so that the diode D1 is turned on. The first inductor L1 releases its stored energy to the first capacitor C1, and the voltage across the first capacitor C1 gradually increases, thereby achieving a boost.

[0077] In the embodiment of the present application, since the DC signal output by the rectifier module 210 is relatively small, the DC signal can be amplified by the voltage regulator module 230, which can ensure that the amplified signal can meet the voltage requirement corresponding to the AC load, and ensure that the AC load can work normally. In addition, in the embodiment of the present application, the safety element 250 can output a first control signal to the voltage regulator module 230, so that the voltage regulator module 230 can amplify the input signal at different magnifications based on different first control signals, so that it can be ensured that even if DC signals of different sizes are input, the voltage regulator module 230 can output a voltage that meets the requirements of the AC load.

[0078] Furthermore, in order to realize the function of the inverter module 240, as another implementation of the present application, the present application also provides another implementation of the AC control circuit of the near field communication receiving device, and the details are shown in the following embodiments.

[0079] Figure 6 FIG. 2 is a schematic diagram of the architecture of an AC control circuit 200 of a near field communication receiving device provided in another embodiment of the present application. Figure 6 As shown, the inverter module 240 includes: a first bridge arm group 241, the first bridge arm group 241 includes a first upper bridge arm 2411 and a first lower bridge arm 2412, the first end of the first upper bridge arm 2411 is connected to the voltage regulating module 230, the second end of the first upper bridge arm 2411 is connected to the first end of the first lower bridge arm 2412, and the second end of the first lower bridge arm 2412 is grounded; a second bridge arm group 242, the second bridge arm group 242 includes a second upper bridge arm 2421 and a second lower bridge arm 2422, The first end of the second upper bridge arm 2421 is connected to the first end of the first upper bridge arm 2411, the second end of the second upper bridge arm 2421 is connected to the first end of the second lower bridge arm 2422, and the second end of the second lower bridge arm 2422 is connected to the second end of the first lower bridge arm 2412; and the control end of the first upper bridge arm 2411, the control end of the first lower bridge arm 2412, the control end of the second upper bridge arm 2421 and the control end of the second lower bridge arm 2422 are all connected to the safety element 250.

[0080] The second end of the first upper bridge arm 2411 can be used as the first output end of the target AC signal, and the second end of the second upper bridge arm 2421 can be used as the second output end of the target AC signal. The AC load is powered through the first output end and the second output end.

[0081] In some optional embodiments, each of the first upper bridge arm 2411, the first lower bridge arm 2412, the second upper bridge arm 2421 and the second lower bridge arm 2422 includes a triode and a second unidirectional conduction unit; or, each of the first upper bridge arm 2411, the first lower bridge arm 2412, the second upper bridge arm 2421 and the second lower bridge arm 2422 includes a semiconductor field effect transistor, i.e., a MOS tube.

[0082] Exemplarily, the structures of the bridge arms in the inverter module 240 may be the same. For example, each bridge arm in the inverter module 240 may be composed of a triode and a second unidirectional conduction unit; or each bridge arm in the inverter module 240 may be a semiconductor field effect transistor.

[0083] Next, combine Figure 7 The inverter module 240 is described in the following example.

[0084] Figure 7 FIG. 2 is a schematic diagram of the architecture of an AC control circuit 200 of a near field communication receiving device provided in another embodiment of the present application. Figure 7As shown, in the inverter module 240, the first upper bridge arm 2411 can be composed of the second triode Q2 and the second diode D2, and the first end of the second triode Q2 is connected to the voltage regulating module 230, the cathode of the second diode D2 is connected to the first end of the second triode Q2, and the anode of the second diode D2 is connected to the second end of the second triode Q2. The first lower bridge arm 2412 can be composed of the third triode Q3 and the third diode D3, and the first end of the third triode Q3 is connected to the second end of the second triode Q2, the second end of the third triode Q3 is grounded, the cathode of the third diode D3 is connected to the first end of the third triode Q3, and the second end of the third diode D3 is connected to the ground. The second upper bridge arm 2421 can be composed of the fourth triode Q4 and the fourth diode D4, wherein the first end of the fourth triode Q4 is connected to the first end of the second triode Q2, the cathode of the fourth diode D4 is connected to the first end of the fourth triode Q4, and the anode of the fourth diode D4 is connected to the second end of the fourth triode Q4. The second lower bridge arm 2422 may be composed of a fifth triode Q5 and a fifth diode D5, wherein the first end of the fifth triode Q5 is connected to the second end of the fourth triode Q4, the second end of the fifth triode Q5 is grounded, the cathode of the fifth diode D5 is connected to the first end of the fifth triode Q5, and the anode of the fifth diode D5 is grounded. In addition, the control ends of the second triode Q2, the third triode Q3, the fourth triode Q4, and the fifth triode Q5 are connected to the safety element 250. Figure 7 The transistors in the figure are all described as NPN transistors.

[0085] It can be understood that the safety element 250 outputs a high-level signal to the second triode Q2 and the fifth triode Q5, and outputs a low-level signal to the third triode Q3 and the fourth triode Q4. At this time, the second triode Q2 and the fifth triode Q5 are in the on state, and the third triode Q3 and the fourth triode Q4 are in the off state. At this time, the voltage output between the first output terminal and the second output terminal can be a current in the first direction. Further, the safety element 250 can output a high-level signal to the third triode Q3 and the fourth triode Q4, and output a low-level signal to the second triode Q2 and the fifth triode Q5 at the same time. At this time, the third triode Q3 and the fourth triode Q4 are in the on state, and the second triode Q2 and the fifth triode Q5 are in the off state. At this time, the voltage output between the first output terminal and the second output terminal can be a current in the second direction.

[0086] The safety element 250 can change the frequency of the target AC signal by changing the output frequency of high and low levels and the duration of high and low levels.

[0087] Furthermore, it can be understood that during the manufacturing process of the MOS tube, a parasitic diode will be formed due to its physical structure. Therefore, when the MOS tube is used as the bridge arm of the inverter module 240, its working principle is consistent with the working principle when the triode and the unidirectional conduction module are used as the bridge arm, and no further details will be given here.

[0088] In the embodiment of the present application, the DC signal can be converted into an AC signal through the inverter module 240. In addition, the second control signal is output to the inverter module 240 through the safety element 250, so that the voltage regulating module 230 controls the on and off states of each bridge arm based on different second control signals, thereby outputting AC signals of different frequencies, so as to ensure that the frequency of the target AC signal meets the working requirements of the AC load.

[0089] Furthermore, to ensure the quality of the AC signal, as another implementation of the present application, the present application also provides another implementation of the AC control circuit of the near field communication receiving device, please refer to the following embodiments for details.

[0090] Figure 8 FIG. 1 is a schematic diagram of an AC control circuit of a near field communication receiving device provided by another embodiment of the present application. Figure 8 As shown, the AC control circuit further includes a waveform conversion module 260, a first end of the waveform conversion module is connected to the inverter module, and a second end of the waveform conversion module is used to connect to an AC load.

[0091] Exemplarily, the waveform conversion module may be a sine wave conversion module, wherein the sine wave conversion module may convert the non-sinusoidal wave signal output by the inverter module into a sine wave signal.

[0092] In one example, the waveform conversion module 260 may be a low-pass filter, for example, the waveform conversion module may be a first-order resistor-capacitor (RC) filter.

[0093] It can be understood that the above-mentioned waveform conversion module is only used for exemplary description, and the waveform conversion module 260 may also include an integration circuit, a comparator, etc. In the embodiment of the present application, the waveform conversion module is not limited.

[0094] In the embodiment of the present application, since the target AC signal output by the inverter module may be a non-sinusoidal wave, this may cause a large harmonic current to be generated in the AC load, and these harmonic currents may have an adverse effect on the AC load, affecting the service life and performance of the AC load. Therefore, the waveform corresponding to the target AC signal can be converted into a sine wave through the waveform conversion module, thereby reducing the adverse effects of harmonics.

[0095] Furthermore, an AC control method is also provided in an embodiment of the present application, which can be applied to the AC control circuit of the near field communication receiving device involved in any of the above embodiments. The AC control method provided in an embodiment of the present application is described in detail below.

[0096] Fig. 9 is a flow chart of an AC control method provided in an embodiment of the present application. Fig. 9 As shown, the AC control method includes the following steps:

[0097] S910: Receive transaction data.

[0098] Exemplarily, the transaction data may be transaction data sent by an NFC transmitting device. After the NFC receiving device establishes a communication connection with the NFC transmitting device, the SE may receive the transaction data sent by the NFC transmitting device.

[0099] In one example, the transaction data may include information such as transaction amount, transaction method, transaction status, etc. The transaction status may include success, failure, and processing.

[0100] In another example, the transaction data may also include identity information, order details, encrypted ciphertext and other information.

[0101] S920. Generate a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data.

[0102] Exemplarily, different transaction data may correspond to different first control signals to drive the voltage regulating module to output target DC control signals of different magnitudes. Also, different transaction data may correspond to different second control signals to drive the inverter module to output target AC control signals of different magnitudes.

[0103] In some optional embodiments, the first control signal may include a first signal adjustment frequency and a first signal duty cycle, the first signal adjustment frequency is used to characterize the first signal period of the first control signal, and the first signal duty cycle is used to characterize the ratio of the high level to the time corresponding to the first signal period. The second control signal includes a second signal adjustment frequency and a second signal duty cycle, the second signal adjustment frequency is used to characterize the second signal period of the second control signal, and the second signal duty cycle is used to characterize the ratio of the high level to the time corresponding to the second signal period.

[0104] Exemplarily, the first signal in the first control signal may be a high level signal, and the second signal in the second control signal may be a high level signal in the second control signal. It can be understood that the first control signal and the second control signal may be composed of high and low level signals, wherein the period of the high and low level signals may be used to control the frequency of the first control signal or the second control signal; different duty cycles may be different energies output by the voltage regulating module and the inverter module.

[0105] In the embodiment of the present application, the voltage regulating module and the inverter module can be controlled by controlling the signal frequency and the duty cycle of the first control signal and the second control signal.

[0106] S930: Output a first control signal to the voltage regulating module, so that the voltage regulating module changes the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal.

[0107] Exemplarily, the SE may output a first control signal to the voltage regulating module. After receiving the first control signal, the voltage regulating module may change the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal.

[0108] In some optional embodiments, the first control signal may be transmitted to the voltage regulating module via a first signal interface in the SE, wherein the first control interface may be an unoccupied signal interface in the SE.

[0109] S940: Output a second control signal to the inverter module, so that the inverter module performs voltage conversion on the target DC signal according to the second control signal to obtain a target AC signal, and outputs the target AC signal to the AC load.

[0110] Exemplarily, the SE may output a second control signal to the inverter module. After receiving the second control signal, the inverter module may perform voltage conversion on the target DC signal output by the rectifier module according to the second control signal to obtain a target AC signal.

[0111] In some optional embodiments, the second control signal may be transmitted to the inverter module via the second control interface in the SE, wherein the second control interface may be an unoccupied signal interface in the SE.

[0112] In the embodiment of the present application, by using the idle interface in the SE to transmit the control signal, the resources in the SE are fully utilized, while improving the utilization of SE resources, avoiding the space occupation caused by increasing the control device, and saving the space of the NFC receiving device.

[0113] In the embodiment of the present application, the original AC signal is converted into a DC signal through a rectifier circuit, and a first control signal is sent to the voltage regulating module through the SE. The voltage regulating module can change the voltage of the DC signal based on the first control signal, so that the DC voltage can be adjusted to obtain the voltage value required by the AC load. In addition, the SE can also send a second control signal to the inverter module, and the inverter module converts the voltage based on the second control signal to ensure that the DC signal can be converted into an AC signal, thereby driving the AC load. It can be understood that through the embodiment of the present application, using the AC control circuit, passive stable boosting can be achieved in a limited space, ensuring the size and stability of the voltage flowing into the alternating load, thereby ensuring the performance and service life of the alternating load.

[0114] In order to determine the first control signal and the second control signal, as another implementation of the present application, the present application also provides another implementation of the AC control method, and details are shown in the following embodiments.

[0115] Fig.10 is a flow chart of an AC control method provided in an embodiment of the present application. Fig.10 As shown, the AC control method includes the following steps:

[0116] S1010. Receive transaction data.

[0117] S1020. Determine the operating condition information corresponding to the AC load according to the transaction data.

[0118] S1030. Determine a first control signal and a second control signal that match the operating condition information according to a preset first corresponding relationship, wherein the first preset corresponding relationship represents a corresponding relationship between different operating condition information and the first control signal and the second control signal.

[0119] S1040: Output a first control signal to the voltage regulating module, so that the voltage regulating module changes the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal.

[0120] S1050: Output a second control signal to the inverter module, so that the inverter module performs voltage conversion on the target DC signal according to the second control signal to obtain a target AC signal, and outputs the target AC signal to the AC load.

[0121] Exemplarily, step S1010 is consistent with step S910, and steps S1040-S1050 are consistent with steps S930-S940, which will not be described in detail here.

[0122] In some embodiments, in S1020, the operating condition information corresponding to the AC load may be determined based on the transaction data.

[0123] For example, the transaction data may be analyzed to determine the workflow corresponding to the AC load when the SE processes the transaction data, and the working condition information corresponding to the AC load may be determined based on the workflow of the AC load.

[0124] In one example, if the NFC receiving device is a bank card and the bank card has EL, the SE processes the payment data corresponding to the bank card, and its workflow may include processing the data and determining that the payment is successful. Correspondingly, the EL may remain in a solid green state when the SE processes the transaction data; after determining that the bank card payment is successful, the EL may be in a flashing state.

[0125] In another example, if the NFC receiving device is a bank card, and the bank card has a load display screen, after determining that the bank card payment is successful, the SE determines that the load display device needs to display the words "Payment Successful".

[0126] In some embodiments, in S1030, a first control signal and a second control signal matching the operating condition information may be determined according to a preset first correspondence relationship, wherein the first preset correspondence relationship represents the correspondence between different operating condition information and the first control signal and the second control signal.

[0127] For example, when the AC load is in different working conditions, it requires target AC signals of different sizes. Furthermore, target AC signals of different sizes can be obtained by controlling the voltage regulator module to output different target DC signals, and controlling the inverter module to adopt different voltage conversion methods to convert the target DC signal. Furthermore, the control of the voltage regulator module can be achieved by outputting different first control signals to the voltage regulator module, and the control of the inverter module can be achieved by outputting different second control signals to the inverter module.

[0128] Exemplarily, the size of the target AC signal required for different working conditions of the AC load can be determined, and then through the first corresponding relationship, in order to obtain the first control signal corresponding to the voltage regulating module and the second control signal corresponding to the inverter module when the target AC signal corresponds.

[0129] In one example, if it is determined that the EL needs to be in a constantly on state and the EL needs to reach a preset brightness value, the AC voltage required by the EL is 100V. Then, through the first corresponding relationship, the first control signal corresponding to the voltage regulating module and the second control signal corresponding to the inverter module can be determined.

[0130] Exemplarily, when the first corresponding relationship is preset and the first control signal and the second control signal that match the operating condition information are determined, the DC control signal output by the rectifier module may also be considered.

[0131] In an embodiment of the present application, the operating condition information corresponding to the AC load is determined through transaction data, and a first control signal and a second control signal matching the operating condition information are determined by utilizing a preset first corresponding relationship. This ensures that the voltage input to the AC load is a voltage determined according to its different operating conditions, thereby enabling the AC load to safely execute the actuator function.

[0132] Based on the AC control method provided by the present application, the present application accordingly provides an AC control device of an embodiment. Below, the AC control device of the present application is described by taking the AC control method executed by the AC control device as an example.

[0133] Fig.11 A schematic structural diagram of an AC control device provided in this application.

[0134] like Fig.11 As shown, the AC control device 1100 provided in the present application includes:

[0135] A receiving module 1101 is used to receive a data processing request, where the data processing request includes a processing request for controlling an AC load to perform different functions;

[0136] A generating module 1102, configured to generate a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data;

[0137] A first output module 1103 is used to output a first control signal to the voltage regulating module, so that the voltage regulating module changes the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal;

[0138] The second output module 1104 is used to output a second control signal to the inverter module, so that the inverter module converts the target DC signal into a target AC signal according to the second control signal, and outputs the target AC signal to the AC load.

[0139] In some embodiments, the generation module 1102 generates a first control signal corresponding to the voltage regulation module and a second control signal corresponding to the inverter module according to the transaction data in the following manner: determining the operating condition information corresponding to the AC load according to the transaction data; determining the first control signal and the second control signal matching the operating condition information according to a preset first corresponding relationship, wherein the first preset corresponding relationship represents the correspondence between different operating condition information and the first control signal and the second control signal.

[0140] In some embodiments, the first output module 1103 outputs the first control signal to the voltage regulating module in the following manner: outputting the first control signal to the voltage regulating module through the first signal interface; the second output module 1104 outputs the second control signal to the inverter module in the following manner: outputting the second control signal to the inverter module through the second signal interface.

[0141] In some embodiments, the first control signal includes a first signal adjustment frequency and a first signal duty cycle, the first signal adjustment frequency is used to characterize the first signal period of the first control signal, and the first signal duty cycle is used to characterize the ratio of the time corresponding to the high level and the first signal period; the second control signal includes a second signal adjustment frequency and a second signal duty cycle, the second signal adjustment frequency is used to characterize the second signal period of the second control signal, and the second signal duty cycle is used to characterize the ratio of the time corresponding to the high level and the second signal period.

[0142] Fig.11 Each module / unit in the device shown has the function of realizing Fig. 9 The functions of each step in the process can achieve the corresponding technical effects, which will not be described in detail here for the sake of brevity.

[0143] The AC control device provided in the embodiment of the present application converts the original AC signal into a DC signal through a rectifier circuit, and sends a first control signal to the voltage regulating module through the SE. The voltage regulating module can change the voltage of the DC signal based on the first control signal, so that the DC voltage can be adjusted to obtain the voltage value required by the AC load. In addition, the SE can also send a second control signal to the inverter module, and the inverter module converts the voltage based on the second control signal to ensure that the DC signal can be converted into an AC signal, thereby driving the AC load. It can be understood that through the embodiment of the present application, using the AC control circuit, passive stable boosting can be achieved in a limited space, ensuring the size and stability of the voltage flowing into the input alternating load, thereby ensuring the performance and service life of the alternating load.

[0144] Fig.12 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application is shown.

[0145] like Fig.12 As shown, the electronic device may include a processor 1201 and a memory 1202 storing computer program instructions.

[0146] Specifically, the processor 1201 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0147] The memory 1202 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 1202 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In one example, the memory 1202 may include a removable or non-removable (or fixed) medium, or the memory 1202 is a non-volatile solid-state memory. The memory 1202 may be inside or outside the integrated gateway disaster recovery device.

[0148] In one example, the memory 1202 may be a read-only memory (ROM). In one example, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or a flash memory, or a combination of two or more of these.

[0149] The memory 1202 may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to the present application.

[0150] The processor 1201 reads and executes the computer program instructions stored in the memory 1202 to implement Figure 2 and Figure 3 The method / steps in the embodiments shown in Fig. 9 and Fig.11 The corresponding technical effects achieved by executing the methods / steps in the example shown are not repeated here for the sake of brevity.

[0151] In one example, the electronic device may further include a communication interface 1203 and a bus 1210. Fig.12 As shown, the processor 1201, the memory 1202, and the communication interface 1203 are connected via a bus 1210 and communicate with each other.

[0152] The communication interface 1203 is mainly used to implement communication between various modules, devices, units and / or equipment in the embodiments of the present application.

[0153] Bus 1210 includes hardware, software or both, and the components of the cashier terminal are coupled to each other. For example, but not limitation, the bus may include Accelerated Graphics Port (AGP) or other graphics bus, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), Hyper Transport (HT) interconnection, Industry Standard Architecture (ISA) bus, InfiniBand Interconnection, Low Pin Count (LPC) bus, Memory Bus, Micro Channel Architecture (MCA) bus, Peripheral Component Interconnect (PCI) bus, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 1210 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.

[0154] The electronic device can execute the AC control method in the embodiment of the present application based on the data processing request, thereby realizing the combination Figures 9 and 10 The described AC control method, device and system.

[0155] In addition, in combination with the AC control method in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by a processor, any one of the AC control methods in the above embodiment is implemented.

[0156] An embodiment of the present application also provides a computer program product, including a computer program, which implements any one of the AC control methods in the above embodiments when the computer program is executed by a processor.

[0157] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0158] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), appropriate firmware, plug-in, function card, etc. When implemented in software, the elements of the present application are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or communication link by a data signal carried in a carrier. "Machine-readable medium" may include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (Radio Frequency, RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0159] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0160] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0161] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. An AC control circuit for a near field communication receiving device, characterized in that: include: A rectifier module, connected to the driving coil, for converting the initial AC signal generated by the driving coil into a DC signal; A voltage regulating module, connected to the rectifier module, for performing voltage conversion on the DC signal to obtain a target DC signal; an inverter module, connected to the voltage regulating module, configured to convert the target DC signal into a target AC signal, and output the target AC signal to an AC load; The safety element SE is connected to the driving coil, the voltage regulating module and the inverter module respectively, and is used to generate a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data when receiving the transaction data.

2. The circuit according to claim 1, characterized in that The SE includes a first signal interface and a second signal interface; the first signal interface is connected to the voltage regulating module for transmitting the first control signal; the second signal interface is connected to the inverter module for transmitting the second control signal.

3. The circuit according to claim 1, characterized in that The voltage regulating module comprises: An inductor unit connected to the rectifier module; a first switch unit, wherein a first end of the first switch unit is connected to the inductor unit, a second end of the first switch unit is grounded, and a control end of the first switch unit is connected to the SE, and is used to control a state of the first switch unit according to a first control signal sent by the SE when receiving the first control signal, wherein the state includes an on state and an off state; a first unidirectional conductive unit, wherein a first end of the first unidirectional conductive unit is connected to a second end of the inductor unit, and a second end of the unidirectional conductive unit is connected to the inverter module; and a first voltage stabilizing unit, wherein a first end of the first voltage stabilizing unit is connected to the first unidirectional conducting unit; and a second end of the first voltage stabilizing unit is grounded.

4. The circuit according to claim 3, characterized in that The inductor unit includes a first inductor, a first end of which is connected to the rectifier module. The first switch unit includes a transistor, a first end of the transistor is connected to the second end of the first inductor, a second end of the transistor is grounded, and a control end of the transistor is connected to the SE; The first unidirectional conducting unit comprises a diode, an anode of the diode is connected to the second end of the first inductor, and a cathode of the diode is connected to the inverter module; The voltage stabilizing unit comprises a first capacitor, a first end of the first capacitor is connected to the cathode of the diode, and a second end of the first capacitor is grounded.

5. The circuit according to claim 1, characterized in that The inverter module comprises: A first bridge arm group, the first bridge arm group includes a first upper bridge arm and a first lower bridge arm, a first end of the first upper bridge arm is connected to the voltage regulating module, a second end of the first upper bridge arm is connected to a first end of the first lower bridge arm, and a second end of the first lower bridge arm is grounded; A second bridge arm group, the second bridge arm group includes a second upper bridge arm and a second lower bridge arm, a first end of the second upper bridge arm is connected to a first end of the first upper bridge arm, a second end of the second upper bridge arm is connected to a first end of the second lower bridge arm, and a second end of the second lower bridge arm is connected to a second end of the first lower bridge arm; Furthermore, the control end of the first upper bridge arm, the control end of the first lower bridge arm, the control end of the second upper bridge arm, and the control end of the second lower bridge arm are all connected to the SE.

6. The circuit according to claim 5, characterized in that The first upper bridge arm, the first lower bridge arm, the second upper bridge arm and the second lower bridge arm all include a triode and a second unidirectional conductive unit; or, The first upper bridge arm, the first lower bridge arm, the second upper bridge arm and the second lower bridge arm all include semiconductor field effect transistors.

7. The circuit according to claim 1, characterized in that The circuit also includes a waveform conversion module; The first end of the waveform conversion module is connected to the inverter module, and the second end of the waveform conversion module is used to connect to the AC load.

8. An AC control method, characterized in that: The AC control circuit applied to the near field communication receiving device according to any one of claims 1 to 6, the method comprising: Receive transaction data; Generate a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data; Outputting the first control signal to the voltage regulating module, so that the voltage regulating module changes the voltage of the DC signal output by the rectifier module according to the first control signal to obtain a target DC signal; The second control signal is output to the inverter module, so that the inverter module performs voltage conversion on the target DC signal according to the second control signal to obtain a target AC signal, and outputs the target AC signal to an AC load.

9. The method according to claim 8, characterized in that The step of generating a first control signal corresponding to the voltage regulating module and a second control signal corresponding to the inverter module according to the transaction data includes: Determining working condition information corresponding to the AC load according to the transaction data; According to a preset first corresponding relationship, a first control signal and a second control signal matching the operating condition information are determined, wherein the preset first corresponding relationship represents a corresponding relationship between different operating condition information and the first control signal and the second control signal.

10. The method according to claim 8 or 9, characterized in that: The outputting the first control signal to the voltage regulating module comprises: Outputting the first control signal to the voltage regulating module through a first signal interface; The outputting the second control signal to the inverter module comprises: The second control signal is output to the inverter module through the second signal interface.

11. The method according to claim 8, characterized in that The first control signal includes a first signal adjustment frequency and a first signal duty cycle, wherein the first signal adjustment frequency is used to represent a first signal period of the first control signal, and the first signal duty cycle is used to represent a ratio of a high level to a time corresponding to the first signal period; The second control signal includes a second signal adjustment frequency and a second signal duty cycle. The second signal adjustment frequency is used to characterize a second signal period of the second control signal. The second signal duty cycle is used to characterize a ratio of a high level to a time corresponding to the second signal period.

12. An electronic device, characterized in that: The device comprises: a processor, and a memory storing computer program instructions; the processor reads and executes the computer program instructions to implement the AC control method of the near field communication receiving device as described in any one of claims 8-11.

13. A computer storage medium, characterized in that: The computer storage medium stores computer program instructions, and when the computer program instructions are executed by the processor, the AC control method for a near field communication receiving device according to any one of claims 8 to 11 is implemented.

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