Signal transmission method based on wireless energy, storage medium and equipment

Abstract

The embodiment of the invention provides a signal transmission method based on wireless energy, a storage medium and equipment. The method comprises the following steps: firstly, receiving an energy transmission signal; wherein the energy transmission signal comprises at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, and the energy transmission signal is used for indicating a transmission signal from the primary side end to the secondary side end; the two modulation circuits are respectively a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit; secondly, converting a digital identifier, corresponding to a modulation circuit, in the energy transmission signal into a modulation signal through the modulation circuit; wherein the modulation signal refers to a signal representing a digital identifier, and finally, according to the modulation signal, generating an alternating current signal used for synchronously transmitting energy and an energy transmission signal, and sending the alternating current signal to the secondary side end. The method is used for achieving the effects that the volume of the primary side end is prevented from being increased and the cost is low during wireless signal transmission.

Description

Technical Field

[0001] The present application relates to the technical field of wireless power transmission or contactless power transmission, and in particular to a signal transmission method, storage medium and device based on wireless energy. Background Art

[0002] Many high-tech related devices, such as drones and human implantable devices, require the primary side to wirelessly transmit energy and information to the secondary side at the same time in order to simultaneously perform wireless charging and receive information from the primary side.

[0003] In related technologies, in addition to the circuit for transmitting energy at the primary side, a separate circuit for information transmission can be deployed.

[0004] However, since the above method requires a separate circuit to be deployed for information transmission, the primary side requires a larger volume, and is therefore not suitable for a primary side that requires a smaller volume, and is also costly. Summary of the Invention

[0005] The embodiments of the present application provide a wireless energy-based signal transmission method, storage medium, and device to achieve the effect of avoiding increasing the volume of the primary end and reducing costs when transmitting signals wirelessly.

[0006] In a first aspect, an embodiment of the present application provides a signal transmission method based on wireless energy, the method being applied to a primary side; the primary side is deployed with two modulation circuits, the modulation circuits being used to convert the form of the signal; the method comprising:

[0007] Receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, the energy transmission signal is used to instruct the primary end to transmit a signal to the secondary end, the two modulation circuits are a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit; the two modulation circuits correspond to the first identifier and the second identifier, respectively;

[0008] The modulation circuit converts the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal; wherein the modulation signal refers to a signal representing the digital identifier;

[0009] An AC signal is generated according to the modulation signal, and the AC signal is sent to the secondary end.

[0010] In a possible implementation, converting, by the modulation circuit, a digital identifier in the energy transmission signal corresponding to the modulation circuit into a modulation signal includes:

[0011] Performing traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier;

[0012] Determining, according to a preset association relationship, a modulation circuit corresponding to the currently traversed digital identifier;

[0013] The currently traversed digital identifier is converted into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0014] In a possible implementation, converting the currently traversed digital identifier into a modulated signal by a modulation circuit corresponding to the currently traversed digital identifier includes:

[0015] If the currently traversed digital identifier is the first identifier, converting the first identifier into a corresponding modulation signal through the unipolar frequency multiplication modulation circuit;

[0016] If the currently traversed digital identifier is the second identifier, the second identifier is converted into a corresponding modulation signal through the unipolar modulation circuit.

[0017] In a possible implementation, a driving circuit is disposed in the primary end, and the driving circuit is used to amplify the signal. Generating an AC signal according to the modulated signal includes:

[0018] Amplifying the voltage and current of the modulation signal by the driving circuit to obtain an amplified modulation signal;

[0019] An AC signal is generated according to the amplified modulated signal.

[0020] In one possible implementation, a DC power supply and an inverter circuit are deployed in the primary side; and generating an AC signal according to the amplified modulated signal includes:

[0021] generating a DC signal through the DC power supply;

[0022] According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain the AC signal.

[0023] In one possible implementation, a first harmonic attenuation circuit is deployed at the primary end, the first harmonic attenuation circuit including a primary compensation capacitor and a primary coupling coil connected in series; and according to the amplified modulation signal, controlling the DC signal to pass through the inverter circuit to obtain the AC signal includes:

[0024] According to the amplified modulation signal, controlling the DC signal to pass through the inverter circuit to obtain an initial AC signal; wherein the initial AC signal includes a fundamental wave and harmonics;

[0025] The first harmonic attenuation circuit attenuates the harmonics in the initial AC signal to obtain the AC signal.

[0026] In a second aspect, an embodiment of the present application provides a signal transmission method based on wireless energy, the method being applied to a secondary side, where the secondary side is an electronic device to be powered; the method comprising:

[0027] Receive an AC signal transmitted by the primary end; wherein the AC signal refers to an AC signal generated by receiving an energy transmission signal at the primary end and converting a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit;

[0028] determining the energy transmission signal and the power supply signal according to the AC signal;

[0029] The secondary side is powered by the power supply signal.

[0030] In one possible implementation, a second harmonic attenuation circuit is deployed in the secondary end, and the second harmonic attenuation circuit includes a secondary compensation capacitor and a secondary coupling coil connected in series. Determining the energy transmission signal and the power supply signal based on the AC signal includes:

[0031] Attenuating the harmonics in the AC signal through the second harmonic attenuation circuit to obtain a target AC signal;

[0032] The energy transmission signal and the power supply signal are determined according to the target AC signal.

[0033] In a possible implementation, a harmonic enhancement circuit is deployed in the secondary side; and determining the energy transmission signal according to the target AC signal includes:

[0034] The harmonic enhancement circuit enhances the preset harmonics in the target AC signal to obtain an enhanced target AC signal;

[0035] Determining a target binary signal based on each instantaneous voltage in the enhanced target AC signal; wherein the target binary signal represents a rectangular pulse signal having a first preset voltage value and a second preset voltage value;

[0036] determining a digital identifier according to the target binary signal;

[0037] The energy transmission signal is determined according to the determined digital identifier.

[0038] In a possible implementation, determining a target binary signal according to each instantaneous voltage in the enhanced target AC signal includes:

[0039] If the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, determining the instantaneous voltage as a first preset voltage value;

[0040] If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, determining the instantaneous voltage as a second preset voltage value;

[0041] The target binary signal is determined according to a time period corresponding to a first preset voltage value in the enhanced target AC signal and a time period corresponding to a second preset voltage value in the enhanced target AC signal.

[0042] In a possible implementation, determining a digital identifier according to the target binary signal includes:

[0043] Obtaining a voltage value in the target binary signal according to a preset time period;

[0044] If the acquired voltage value is the first preset voltage value, determining the digital identifier as the first identifier;

[0045] If the acquired voltage value is the second preset voltage value, the digital identifier is determined to be the second identifier.

[0046] In one possible implementation, a rectifier circuit is disposed in the secondary side; and determining the power supply signal according to the target AC signal includes:

[0047] The target AC signal is converted into a DC power supply signal through the rectifier circuit.

[0048] In a third aspect, an embodiment of the present application provides a signal transmission device based on wireless energy, wherein the device is applied to a primary side, and two modulation circuits are deployed in the primary side, and the modulation circuits are used to convert the form of the signal; the device includes:

[0049] A receiving module, configured to receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier being at least one of a first identifier and a second identifier, the energy transmission signal being used to indicate a transmission signal from the primary end to the secondary end, and the two modulation circuits corresponding to the first identifier and the second identifier, respectively;

[0050] a conversion module, configured to convert the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit; wherein the modulation signal refers to a signal representing the digital identifier;

[0051] A generating module is used to generate an AC signal according to the modulation signal, and send the AC signal to the secondary end.

[0052] In a possible implementation, the conversion module is specifically configured to:

[0053] Performing traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier;

[0054] Determining, according to a preset association relationship, a modulation circuit corresponding to the currently traversed digital identifier;

[0055] The currently traversed digital identifier is converted into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0056] In a possible implementation manner, the two modulation circuits are respectively a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit.

[0057] In a possible implementation manner, the “converting the currently traversed digital identifier into a modulation signal by using a modulation circuit corresponding to the currently traversed digital identifier” in the conversion module is specifically configured to:

[0058] If the currently traversed digital identifier is the first identifier, converting the first identifier into a corresponding modulation signal through the unipolar frequency multiplication modulation circuit;

[0059] If the currently traversed digital identifier is the second identifier, the second identifier is converted into a corresponding modulation signal through the unipolar modulation circuit.

[0060] In a possible implementation, a driving circuit is disposed in the primary end, and the driving circuit is used to amplify the signal;

[0061] In a possible implementation, the generating module is specifically configured to:

[0062] Amplifying the voltage and current of the modulation signal by the driving circuit to obtain an amplified modulation signal;

[0063] An AC signal is generated according to the amplified modulated signal.

[0064] In a possible implementation, a DC power supply and an inverter circuit are deployed in the primary side;

[0065] In a possible implementation manner, the “generating an AC signal according to the amplified modulated signal” in the generating module is specifically configured to:

[0066] generating a DC signal through the DC power supply;

[0067] According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain the AC signal.

[0068] In a possible implementation, a first harmonic attenuation circuit is deployed in the primary end, and the first harmonic attenuation circuit includes a primary compensation capacitor and a primary coupling coil connected in series;

[0069] In a possible implementation, the “controlling the DC signal to pass through the inverter circuit to obtain the AC signal according to the amplified modulation signal” in the generation module is specifically configured to:

[0070] According to the amplified modulation signal, controlling the DC signal to pass through the inverter circuit to obtain an initial AC signal; wherein the initial AC signal includes a fundamental wave and harmonics;

[0071] The first harmonic attenuation circuit attenuates the harmonics in the initial AC signal to obtain the AC signal.

[0072] In a fourth aspect, an embodiment of the present application provides a signal transmission device based on wireless energy, wherein the device is applied to a secondary side, wherein the secondary side is an electronic device to be powered, and the device includes:

[0073] A receiving module, configured to receive an AC signal transmitted from a primary end; wherein the AC signal refers to an AC signal generated by receiving an energy transmission signal from the primary end and converting a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit;

[0074] a determination module, configured to determine the energy transmission signal and the power supply signal according to the AC signal;

[0075] The power supply module is used to supply power to the secondary side through the power supply signal.

[0076] In a possible implementation, a second harmonic attenuation circuit is deployed in the secondary end, and the second harmonic attenuation circuit includes a secondary compensation capacitor and a secondary coupling coil connected in series;

[0077] In a possible implementation, the determining module is specifically configured to:

[0078] Attenuating the harmonics in the AC signal through the second harmonic attenuation circuit to obtain a target AC signal;

[0079] The energy transmission signal and the power supply signal are determined according to the target AC signal.

[0080] In a possible implementation manner, a harmonic enhancement circuit is deployed in the secondary side;

[0081] In a possible implementation manner, the “determining the energy transfer signal according to the target AC signal” in the determination module is specifically configured to:

[0082] The harmonic enhancement circuit enhances the preset harmonics in the target AC signal to obtain an enhanced target AC signal;

[0083] Determining a target binary signal based on each instantaneous voltage in the enhanced target AC signal; wherein the target binary signal represents a rectangular pulse signal having a first preset voltage value and a second preset voltage value;

[0084] determining a digital identifier according to the target binary signal;

[0085] The energy transmission signal is determined according to the determined digital identifier.

[0086] In a possible implementation manner, the “determining a target binary signal according to each instantaneous voltage in the enhanced target AC signal” in the determination module is specifically configured to:

[0087] If the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, determining the instantaneous voltage as a first preset voltage value;

[0088] If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, determining the instantaneous voltage as a second preset voltage value;

[0089] The target binary signal is determined according to a time period corresponding to a first preset voltage value in the enhanced target AC signal and a time period corresponding to a second preset voltage value in the enhanced target AC signal.

[0090] In a possible implementation manner, the “determining a digital identifier according to the target binarized signal” in the determination module is specifically configured to:

[0091] Obtaining a voltage value in the target binary signal according to a preset time period;

[0092] If the acquired voltage value is the first preset voltage value, determining the digital identifier as the first identifier;

[0093] If the acquired voltage value is the second preset voltage value, the digital identifier is determined to be the second identifier.

[0094] In a possible implementation manner, a rectifier circuit is disposed in the secondary side;

[0095] In a possible implementation manner, the “determining the power supply signal according to the target AC signal” in the determination module is specifically configured to:

[0096] The target AC signal is converted into a DC power supply signal through the rectifier circuit.

[0097] In a fifth aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor;

[0098] The memory stores computer-executable instructions;

[0099] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the first aspect and / or various possible implementations of the first aspect as described above; or, the processor executes the second aspect and / or various possible implementations of the second aspect as described above.

[0100] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-readable storage medium is stored computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementation methods of the first aspect; or, when executed by a processor, the computer-executable instructions are used to implement the second aspect and / or various possible implementation methods of the second aspect.

[0101] In the seventh aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the first aspect and / or various possible implementation methods of the first aspect; or, when executed by a processor, implements the second aspect and / or various possible implementation methods of the second aspect.

[0102] In an eighth aspect, an embodiment of the present application provides a signal transmission system based on wireless energy, the system comprising a primary side and a secondary side; wherein the primary side is used to execute the first aspect and / or various possible implementations of the first aspect above, and the secondary side is used to execute the second aspect and / or various possible implementations of the second aspect above.

[0103] The wireless energy-based signal transmission method, storage medium and device provided in the embodiments of the present application first receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, and the energy transmission signal is used to indicate the transmission signal from the primary end to the secondary end; secondly, through a modulation circuit, the digital identifier corresponding to the modulation circuit in the energy transmission signal is converted into a modulation signal; wherein the modulation signal refers to a signal representing the digital identifier; finally, according to the modulation signal, an AC signal for synchronously transmitting energy and the energy transmission signal is generated, and the AC signal is sent to the secondary end. The energy transmission signal can be embedded in the AC signal for transmitting energy, and then, when the wireless energy and the energy transmission signal are transmitted synchronously, there is no need to deploy a separate circuit for the transmission of the energy transmission signal, thereby avoiding increasing the volume of the primary end and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0104] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0105] Figure 1 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 1 ;

[0106] Figure 2 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 2 ;

[0107] Figure 3 A schematic diagram of the structure of the wireless energy-based signal transmission system provided in this application;

[0108] Figure 4 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 3 ;

[0109] Figure 5 A schematic diagram of the simulation circuit structure of the wireless energy-based signal transmission system provided in this application;

[0110] Figure 6 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 4 ;

[0111] Figure 7 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 5 ;

[0112] Figure 8 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 6 ;

[0113] Figure 9 This is a schematic diagram of the results of the secondary side simulation receiving the energy transmission signal provided by this application;

[0114] Figure 10 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 7 ;

[0115] Figure 11 A schematic diagram of the monitoring results of the load current and voltage during the simulation process provided by this application;

[0116] Figure 12 This is a schematic diagram of the structure of the signal transmission device based on wireless energy provided by this application Figure 1 ;

[0117] Figure 13 This is a schematic diagram of the structure of the wireless energy-based signal transmission device provided in this application. Figure 2 ;

[0118] Figure 14 This is a schematic diagram of the structure of the electronic device provided in this application.

[0119] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0120] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0121] Many high-tech devices, such as drones and implantable devices, require the primary side to wirelessly transmit both energy and information to the secondary side. The primary side can then power the secondary side with energy and control or send status information to the secondary side with information. Implantable devices can include pacemakers, for example; information can include one or more commands to start power, stop power, or disable a function.

[0122] In one example, circuits corresponding to different power sources can be deployed on the primary side for energy and information respectively. The two circuits are used to generate alternating current corresponding to energy and information transmission respectively, and the two alternating currents are superimposed and sent to the secondary side.

[0123] However, since the above method requires deploying a separate circuit for information transmission in addition to the circuit for transmitting energy at the primary end, the primary end requires a larger volume, and is therefore not suitable for a primary end that requires a smaller volume, and is costly.

[0124] The present application provides a wireless energy-based signal transmission method, storage medium and device to solve the above technical problems.

[0125] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0126] Figure 1 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 1 ,like Figure 1 As shown, the method is applied to the primary side, and the method includes:

[0127] S101. Receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, the energy transmission signal is used to indicate that the primary side transmits a signal to the secondary side, and the two modulation circuits are a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit, and the two modulation circuits correspond to the first identifier and the second identifier, respectively.

[0128] Exemplarily, the primary end may be a ground base station and the secondary end may be a drone. When the secondary end stops within a preset range of the ground base station, the primary end may wirelessly transmit electrical energy to the secondary end to power the secondary end, and simultaneously receive the energy transmission signal and wirelessly send it to the secondary end.

[0129] Among them, the energy transmission signal can represent the instructions sent by the user to the primary side through the terminal device to control the secondary side to start charging, etc.; it can also represent the instructions generated by the program in the primary side according to preset rules to control the secondary side, for example, when the early warning module in the primary side predicts that there are unsafe factors in the primary side, it generates instructions for controlling the secondary side to stop charging, etc.

[0130] In one example, the energy transmission signal includes at least one digital identifier, which may be a first identifier or a second identifier, wherein the first identifier may be 1 in binary and the second identifier may be 0 in binary.

[0131] S102 . Convert the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit; wherein the modulation signal refers to a signal representing the digital identifier.

[0132] In one example, two modulation circuits are deployed in the primary side, and the modulation circuits are used to convert the form of the signal.

[0133] In one example, the two modulation circuits correspond to the first identifier and the second identifier respectively.

[0134] In one example, step S102 may include the following process:

[0135] Performing traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier;

[0136] According to a preset association relationship, a modulation circuit corresponding to the currently traversed digital identifier is determined.

[0137] The currently traversed digital identifier is converted into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0138] Exemplarily, the preset association relationship may be a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit pre-configured in the primary side, which are used to modulate the first identifier and the second identifier respectively; wherein the unipolar frequency multiplication modulation circuit may be a unipolar frequency multiplication sinusoidal pulse width modulation (SPWM) circuit, and the unipolar modulation circuit may be a unipolar SPWM circuit.

[0139] In one example, after receiving the energy transmission signal, the primary end may sequentially extract each digital identifier from the energy transmission signal at a predetermined time period T and determine the digital identifier as the currently traversed digital identifier. The predetermined time period represents the modulation period corresponding to each digital identifier and may be determined based on actual needs without limitation.

[0140] For example, the energy transmission signal includes a first digital identifier and a second digital identifier in sequence. At time t0 after receiving the energy transmission signal, the first digital identifier can be extracted and determined as the currently traversed digital identifier.

[0141] At the time (t0+T), the second digital identifier can be extracted and determined as the currently traversed digital identifier.

[0142] If the currently traversed digital identifier is the first identifier and the modulation circuit corresponding to the first identifier is a unipolar frequency multiplication modulation circuit, the first identifier can be converted based on the unipolar frequency multiplication modulation circuit to obtain a modulation signal corresponding to the digital identifier.

[0143] If the currently traversed digital identifier is the second identifier and the modulation circuit corresponding to the second identifier is a unipolar modulation circuit, the second identifier can be converted based on the unipolar modulation circuit to obtain a modulation signal corresponding to the digital identifier.

[0144] That is to say, 1 and 0 can be converted separately, 1 is converted through a unipolar frequency multiplication modulation circuit, and 0 is converted through a unipolar modulation circuit to obtain a modulation signal corresponding to 1 and a modulation signal corresponding to 0.

[0145] S103: Generate an AC signal according to the modulation signal, and send the AC signal to the secondary side.

[0146] For example, after generating the modulation signal, the primary side can generate an AC signal for synchronously transmitting energy and the energy transmission signal based on the modulation signal, and wirelessly transmit the AC signal to the secondary side. The AC signal can indicate a digital identifier.

[0147] The wireless energy-based signal transmission method provided in the embodiment of the present application first receives an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, and the energy transmission signal is used to indicate the transmission signal from the primary end to the secondary end; secondly, through a modulation circuit, the digital identifier corresponding to the modulation circuit in the energy transmission signal is converted into a modulation signal; wherein the modulation signal refers to a signal representing the digital identifier; finally, according to the modulation signal, an AC signal for synchronously transmitting energy and the energy transmission signal is generated, and the AC signal is sent to the secondary end, and the energy transmission signal can be embedded in the AC signal for transmitting energy, and then, when the wireless energy and the energy transmission signal are transmitted synchronously, there is no need to deploy a separate circuit for the transmission of the energy transmission signal, thereby avoiding increasing the volume of the primary end and low cost.

[0148] Figure 2 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 2 ,like Figure 2 As shown, this embodiment Figure 1 Based on the embodiment, a signal transmission method based on wireless energy is described in detail. The method is applied to the primary side and includes:

[0149] S201. Receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, the energy transmission signal is used to indicate that the primary side transmits a signal to the secondary side, and the two modulation circuits are a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit, and the two modulation circuits correspond to the first identifier and the second identifier, respectively.

[0150] Exemplarily, the implementation of step S201 is similar to that of step S101 , and for details, please refer to the description of step S101 , which will not be repeated here.

[0151] Specifically, Figure 3 This is a schematic diagram of the structure of the signal transmission system based on wireless energy provided by this application, such as Figure 3 As shown, Figure 3 (a) in the figure is a schematic diagram of the structure of the original edge.

[0152] The primary side may include a module for receiving energy transmission signals 301, a modulation circuit selection module 302, a driving circuit 303, a DC power supply U s , inverter circuit, primary compensation capacitor C1, primary coupling coil L1; wherein, the modulation circuit selection module 302 may include a unipolar frequency multiplication modulation circuit 3021 and a unipolar modulation circuit 3022; the inverter circuit may include a switch tube Q1, a switch tube Q2, a switch tube Q3, and a switch tube Q4, and the switch tube may be a metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, referred to as MOS tube) or an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, referred to as IGBT), etc.

[0153] The modulation circuit selection module 302 is connected to the energy transmission signal receiving module 301 and the driving circuit 303 respectively. The driving circuit 303 is also connected to the inverter circuit.

[0154] DC power supply U s The positive poles are connected to the switch tubes Q1 and Q3 respectively, and the DC power supply U s The negative electrodes are connected to the switch tubes Q2 and Q4 respectively, the switch tubes Q1 and Q2 are connected, and the switch tubes Q3 and Q4 are connected.

[0155] The primary compensation capacitor C1 and the primary coupling coil L1 are connected in series and are respectively connected to the output terminals of the inverter circuit.

[0156] In an example, Figure 3As shown in (a), the primary side can receive an energy transmission signal through the energy transmission signal receiving module 301, wherein the energy transmission signal can be an instruction to instruct the secondary side to start charging.

[0157] S202: Perform traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier.

[0158] For example, after receiving the energy transmission signal, the energy transmission signal receiving module 301 can traverse the digital identifier in the energy transmission signal to determine the currently traversed digital identifier. The specific implementation method has been introduced in step S102 and will not be repeated here.

[0159] S203: Determine the modulation circuit corresponding to the currently traversed digital identifier according to the preset association relationship.

[0160] In one example, two modulation circuits are deployed in the primary side, and the modulation circuits are used to convert the form of the signal.

[0161] For example, the introduction of the two modulation circuits and the preset association relationship can be found in the description of step S102 and will not be repeated here.

[0162] like Figure 3 As shown in (a), the energy transmission signal receiving module 301, after determining the digital identifier currently traversed, inputs the digital identifier into the modulation circuit selection module 302, and the modulation circuit selection module 302 determines the modulation circuit corresponding to the digital identifier currently traversed based on a preset association relationship.

[0163] Specifically, if the modulation circuit selection module 302 determines that the currently traversed digital identifier is the first identifier, then based on the association relationship between the unipolar frequency multiplication modulation circuit and the first identifier, it is determined that the modulation circuit corresponding to the currently traversed digital identifier is a unipolar frequency multiplication modulation circuit; if it is determined that the currently traversed digital identifier is the second identifier, then based on the unipolar modulation circuit corresponding to the second identifier, it is determined that the modulation circuit corresponding to the currently traversed digital identifier is a unipolar modulation circuit.

[0164] The modulation circuit selection module 302 can determine the modulation circuit corresponding to the currently traversed digital identifier by software or hardware, and there is no limitation on this, and the selection can be made according to actual needs.

[0165] In the modulation circuit selection module 302, determining the modulation circuit corresponding to the currently traversed digital identifier through software implementation can avoid increasing the volume of the original edge and reduce hardware costs; determining the modulation circuit corresponding to the currently traversed digital identifier through hardware implementation can reduce the computational complexity of the algorithm and thus achieve faster response speed.

[0166] Specifically, in the modulation circuit selection module 302, when determining the modulation circuit corresponding to the currently traversed digital identifier through hardware implementation, such as Figure 3 As shown in (a), a single-pole double-throw switch can be further deployed in the modulation circuit selection module 302, wherein one end of the input end of the single-pole double-throw switch can be connected to the energy transmission signal receiving module 301, and the other end is connected to the unipolar frequency multiplication modulation circuit 3021 or the unipolar modulation circuit 3022, and the output end of the single-pole double-throw switch is connected to the drive circuit 303.

[0167] The energy transmission signal receiving module 301 inputs the digital identifier into the single-pole double-throw switch in the modulation module 302 after determining the digital identifier currently traversed.

[0168] The single-pole double-throw switch can be used to, if it is determined that the currently traversed digital identifier is the first identifier, then open the path between the single-pole double-throw switch and the unipolar frequency multiplication modulation circuit 3021; ​​or, if it is determined that the currently traversed digital identifier is the second identifier, then open the path between the single-pole double-throw switch and the unipolar modulation circuit 3022.

[0169] By determining the modulation circuit corresponding to the currently traversed digital identifier according to a preset association relationship, it can be achieved that different digital identifiers correspond to different modulation circuits.

[0170] S204 : Convert the currently traversed digital identifier into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0171] In one example, the modulated signal refers to a signal representing a digital identity.

[0172] In one example, step S204 includes the following process:

[0173] If the currently traversed digital identifier is the first identifier, the first identifier is converted into a corresponding modulation signal through a unipolar frequency multiplication modulation circuit;

[0174] If the currently traversed digital identifier is the second identifier, the second identifier is converted into a corresponding modulation signal through a unipolar modulation circuit.

[0175] For example, the implementation of step S204 has been introduced in step S102 and will not be repeated here.

[0176] like Figure 3 As shown in (a), after determining the modulation circuit corresponding to the currently traversed digital identifier, the modulation circuit selection module 302 can convert the digital identifier into a modulation signal based on the modulation circuit.

[0177] By converting different digital identifiers into different modulation signals representing the digital identifiers based on their corresponding modulation circuits, the digital identifiers can be embedded in the modulation signals, and then different results can be generated when different modulation signals corresponding to different digital identifiers are subsequently processed.

[0178] S205 , amplifying the voltage and current of the modulation signal through the driving circuit to obtain an amplified modulation signal.

[0179] In one example, a driving circuit is deployed in the primary side, and the driving circuit is used to amplify the signal.

[0180] For example, Figure 3 As shown in (a), after converting the digital identifier corresponding to the currently traversed digital identifier into a modulation signal, the modulation circuit selection module 302 can input the modulation signal into the drive circuit 303. The drive circuit 303 then amplifies the voltage and current in the modulation signal to obtain an amplified modulation signal, and inputs the amplified modulation signal into the inverter circuit. The modulation signal also indicates the switching timing of each switch in the inverter circuit. The amplified modulation signal has the same digital identifier indicated by the modulation signal before amplification and the same switching timing of each switch in the inverter circuit.

[0181] In one example, after the modulation circuit selection module 302 converts the first identifier 1 into the corresponding unipolar frequency-doubled modulation signal, assuming that the voltage of the unipolar frequency-doubled modulation signal is 3.3V, the voltage of the unipolar frequency-doubled modulation signal can be increased to 15V based on the driving circuit 303.

[0182] The modulation signal is amplified by the driving circuit, and the obtained amplified modulation signal can amplify the voltage and current in the modulation signal, while not changing the digital identification indicated by the modulation signal and the switching timing of each switch tube in the control inverter circuit.

[0183] S206: Generate an AC signal according to the amplified modulated signal.

[0184] In one example, a DC power supply and an inverter circuit are deployed on the primary side.

[0185] In one example, step S206 includes the following steps:

[0186] The first step of step S206: generating a DC signal through a DC power supply;

[0187] The second step of step S206: according to the amplified modulation signal, control the DC signal to pass through the inverter circuit to obtain an AC signal.

[0188] In one example, a first harmonic attenuation circuit is deployed at the primary end, and the first harmonic attenuation circuit includes a primary compensation capacitor and a primary coupling coil connected in series.

[0189] In one example, the second step of step S206 includes the following process:

[0190] According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain the initial AC signal; wherein the initial AC signal includes the fundamental wave and harmonic waves;

[0191] The harmonics in the initial AC signal are attenuated by the first harmonic attenuation circuit to obtain an AC signal.

[0192] Exemplarily, the DC power supply is any power supply that can generate a DC signal, for example, the DC power supply is a battery, such as a lead-acid battery, a lithium battery, etc., and the battery can output a DC signal by discharging; or, the DC power supply is a solar photovoltaic panel, which can convert light energy into a DC signal, etc. There is no restriction on this and it can be selected according to needs.

[0193] The inverter circuit is any inverter circuit that can convert the DC signal generated by the DC power supply into an AC signal according to the amplified modulation signal. For example, the inverter circuit is Figure 3 The full-bridge inverter circuit shown in (a) includes switch tubes Q1, switch tube Q2, switch tube Q3, and switch tube Q4, or the inverter circuit is an inverter circuit including 6 switch tubes, etc. There is no limitation to this and it can be selected according to needs.

[0194] Before the inverter circuit receives the amplified modulation signal sent by the drive circuit, the state of each switch tube is closed, that is, the inverter circuit is in a non-working state; after receiving the amplified modulation signal, the inverter circuit can turn on and off each switch tube according to the switching timing corresponding to each switch tube indicated by the amplified modulation signal, and then convert the DC signal generated by the DC power supply into an AC signal through the inverter circuit.

[0195] The high voltage and high current in the amplified modulation signal can fully drive the switching tubes in the inverter circuit to be turned on or off, and then the inverter circuit can more accurately control the switching timing of each switching tube in the inverter circuit according to the indication of the amplified modulation signal, and turn on and off each switching tube, thereby more accurately generating an AC signal containing fundamental and harmonic content.

[0196] The AC signal generated based on the amplified unipolar frequency-multiplied modulation signal representing the first identifier and the AC signal generated based on the amplified unipolar modulation signal representing the second identifier contain different amounts of preset harmonics, thereby facilitating subsequent determination by the secondary end that the digital identifier represented by the AC signal is the first identifier or the second identifier based on the amount of the preset harmonics. The preset harmonics may be, for example, the third harmonic or the tenth harmonic, which is not limited and can be selected based on actual needs.

[0197] In some embodiments, as Figure 3 As shown in (a), the inverter circuit converts the DC power supply U s The generated DC signal is converted into an initial AC signal by an inverter circuit and then passed through a first harmonic attenuation circuit to attenuate the harmonics in the initial AC signal to obtain an AC signal. The initial AC signal may be a high-frequency square wave AC signal including a fundamental wave and harmonics.

[0198] The series primary compensation capacitor C1 and the primary coupling coil L1 in the first harmonic attenuation circuit can be pre-selected to meet ω1L when deployed at the primary end. v1 =1 / ω1C v1 The primary compensation capacitor C1 and the primary coupling coil L1 are configured, wherein ω1 is the angular frequency of the wireless energy-based signal transmission system, ω1=2πf1, f1 is the frequency of the fundamental wave in the signal of the wireless energy-based signal transmission system, which is preset according to actual needs, and L v1 is the self-inductance of the primary coupling coil L1, C v1 is the capacitance value of the primary compensation capacitor C1, and thus the primary compensation capacitor C1 and the primary coupling coil L1 can achieve series resonance at the fundamental frequency f1, thereby providing low impedance to the fundamental wave in the initial AC signal and high impedance to the harmonics in the initial AC signal, and thus attenuating the harmonics in the initial AC signal to obtain an AC signal containing the fundamental wave and residual harmonics.

[0199] In an example, Figure 3 As shown in (a), after the primary side increases the voltage of the unipolar frequency-multiplied modulation signal to 15V based on the driving circuit 303, the 15V unipolar frequency-multiplied modulation signal can be input into the inverter circuit to drive each switch tube in the inverter circuit to turn on and off according to the switching timing of each switch tube indicated by the 15V unipolar frequency-multiplied modulation signal, thereby controlling the DC power supply U s The generated DC signal passes through the inverter circuit to obtain the initial AC signal; then, the initial AC signal passes through the primary compensation capacitor C1 and the primary coupling coil L1 that are series-resonant at the fundamental frequency to attenuate the harmonics in the initial AC signal and obtain an AC signal.

[0200] S207: Send the AC signal to the secondary side.

[0201] For example, Figure 3 As shown, Figure 3 (a) in the equation is the original edge. Figure 3 (b) is the secondary end, which may include a secondary coupling coil L2, and the secondary coupling coil L2 is in a closed loop. Mutual inductance M can be generated between the secondary coupling coil L2 and the primary coupling coil L1 through magnetic coupling.

[0202] After the primary end generates an AC signal based on the amplified modulated signal corresponding to the first digital identifier in the energy transmission signal, the current in the AC signal passing through the primary coupling coil L1 excites an alternating magnetic field around the primary coupling coil L1. The secondary coupling coil L2 is within the range of action of this alternating magnetic field. Therefore, the secondary coupling coil L2 can induce a voltage at both ends of the secondary coupling coil L2 that is the same as the fundamental frequency and harmonic frequencies in the AC signal through magnetic coupling between the secondary coupling coil L1 and the primary coupling coil L2, thereby enabling the primary end to wirelessly transmit the AC signal incorporating the digital identifier to the secondary end.

[0203] In the wireless energy-based signal transmission method provided in this embodiment, the primary end generates a corresponding AC signal for each digital identifier in the energy transmission signal in sequence, and transmits each AC signal to the secondary end. Different digital identifiers use different modulation circuits. Therefore, the preset harmonic content in the AC signal corresponding to different digital identifiers is different. Therefore, based on the preset harmonic content in the AC signal, the energy transmission signal can be transmitted from the primary end to the secondary end. At the same time, energy is transmitted from the primary end to the secondary end through the current and voltage corresponding to the fundamental wave in the AC signal. The energy is used to charge the secondary end, thereby realizing the synchronous transmission of wireless energy and the energy transmission signal.

[0204] On the basis of the circuit used for energy transmission, the primary side only adds hardware or software for using different modulation circuits for different digital identifiers in the energy transmission signal. Therefore, a significant increase in the volume of the primary side is avoided and the cost is low.

[0205] Furthermore, since the energy and the energy transmission signal are wirelessly transmitted based on the fundamental wave and the preset harmonics in the AC signal respectively, mutual interference between the energy and the energy transmission signal during the transmission process can be reduced.

[0206] In addition, since the fundamental wave in the AC signal generally accounts for more than 90%, transmitting energy from the primary side to the secondary side through the current and voltage corresponding to the fundamental wave in the AC signal can maximize power utilization and thus improve the efficiency of energy transmission, thereby achieving efficient charging of the secondary side.

[0207] Figure 4Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 3 ,like Figure 4 As shown, this embodiment is based on the simulation circuit. Figure 2 A variation of the signal transmission method for power supply in the embodiment is applied to the primary side, and the method includes:

[0208] S401. Receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, the energy transmission signal is used to indicate that the primary side transmits a signal to the secondary side, and the two modulation circuits are a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit, and the two modulation circuits correspond to the first identifier and the second identifier, respectively.

[0209] Exemplarily, the implementation of step S401 is similar to that of step S201 . For details, please refer to the description of step S201 , which will not be repeated here.

[0210] Specifically, Figure 5 The schematic diagram of the simulation circuit structure of the wireless energy-based signal transmission system provided in this application is as follows: Figure 5 As shown, Figure 5 (a) in the figure is a schematic diagram of the simulation circuit structure of the primary side.

[0211] The primary side may include a receiving energy transmission signal module 501, a single-pole double-throw switch 502, a unipolar frequency multiplication modulation circuit 5031 and a unipolar modulation circuit 5032, a DC power supply U in , resistor R 11 , capacitor C 11 , simulation inverter circuit, first harmonic attenuation circuit; wherein, the simulation inverter circuit may include 4 MOS tubes, S1, S2, S3, S4 are switches corresponding to the 4 MOS tubes respectively; the first harmonic attenuation circuit includes a primary compensation capacitor C 12 , primary compensation capacitor C 13 , primary coupling coil L 11 .

[0212] One end of the input end of the single-pole double-throw switch 502 can be connected to the energy transmission signal receiving module 501, and the other end is connected to the unipolar frequency multiplication modulation circuit 5031 or the unipolar modulation circuit 5032. The output end of the single-pole double-throw switch is respectively connected to the switch S1, switch S2, switch S3, and switch S4 in the simulation inverter circuit.

[0213] DC power supply U in The positive electrode and the resistor R 11 After connecting in series, the resistor R 11 Connect to the MOS tube corresponding to switch S1 and the MOS tube corresponding to switch S3 respectively, and the DC power supply Uin The negative electrodes of the switches S2 and S4 are connected to the MOS tubes corresponding to the switches S1 and S2, and the MOS tubes corresponding to the switches S3 and S4 respectively. The capacitor C 11 Respectively with resistor R 11 , DC power supply U in negative connection.

[0214] Primary compensation capacitor C 12 , primary compensation capacitor C 13 , and the primary coupling coil L 11 After being connected in series, they are respectively connected to the output ends of the simulated inverter circuit.

[0215] It should be noted that in order to speed up the simulation, Figure 2 The driving circuit of the embodiment omits the step of "amplifying the voltage and current of the modulation signal through the driving circuit to obtain the amplified modulation signal". In actual implementation, it is still necessary to Figure 2 The same as the embodiment, with the addition of a driving circuit and this step.

[0216] S402: Perform traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier.

[0217] Exemplarily, the energy transmission signal receiving module 501 can traverse the digital identifier in the energy transmission signal to determine the currently traversed digital identifier. The specific implementation method is similar to that of step S202. For details, please refer to the description in step S202 and will not be repeated here.

[0218] S403: Determine the modulation circuit corresponding to the currently traversed digital identifier according to the preset association relationship.

[0219] Exemplarily, the implementation of step S403 is similar to the implementation based on the single-pole double-throw switch in step S203. For details, please refer to the description based on the single-pole double-throw switch in step S203, which will not be repeated here.

[0220] In an example, Figure 5 As shown in (a), assuming that the currently traversed digital identifier is the second identifier, if the single-pole double-throw switch 502 receives the second identifier 0 sent by the receiving energy transmission signal module 501, it can determine that the modulation circuit associated with the second identifier 0 is the unipolar modulation circuit 5032 based on the preset association relationship.

[0221] S404: Convert the currently traversed digital identifier into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0222] Exemplarily, the implementation of step S404 is similar to that of step S204 . For details, please refer to the description of step S204 , which will not be repeated here.

[0223] In an example, Figure 5 As shown in (a), assuming that the currently traversed digital identifier is the second identifier 0, the single-pole double-throw switch 502, after determining that the modulation circuit associated with the second identifier 0 is the unipolar modulation circuit 5032, converts the second identifier 0 into a corresponding unipolar modulation signal based on the unipolar modulation circuit 5032. The unipolar modulation signal corresponding to the second identifier 0 indicates the second identifier 0.

[0224] S405: Generate an AC signal according to the modulation signal.

[0225] Exemplarily, the implementation of step S405 is similar to the implementation of step S206. For details, please refer to the description of step S206, which will not be repeated here.

[0226] Specifically, step S405 differs from step S206 in the following three aspects:

[0227] The first difference: in step S405, the simulation circuit omits the driving circuit in order to speed up the simulation speed, and thus omits the step of "amplifying the voltage and current of the modulation signal through the driving circuit to obtain the amplified modulation signal". Then, in step S405, the amplified modulation signal in S206 can be modified into a modulation signal.

[0228] The second difference: Figure 5 As shown in (a), in step S405, after the DC signal is generated by the DC power supply in step S206, the DC signal is also connected to the series resistor R 11 and capacitor C 11 , the DC signal is filtered to remove noise, and a noise-filtered DC signal is obtained; and then, according to the modulation signal, the noise-filtered DC signal is controlled to pass through the simulation inverter circuit to obtain an AC signal.

[0229] Through the series resistor R 11 and capacitor C 11 Filtering the noise of the DC signal can prevent the noise in the DC signal from causing false triggering of the MOS tube in the simulated inverter circuit, which may cause AC signal distortion; it can also prevent the voltage or current stress fluctuations caused by the noise in the DC signal from accelerating the aging of devices in the circuit.

[0230] The third difference: Figure 5 As shown in (a), in step S405, the first harmonic attenuation circuit includes a primary compensation capacitor C connected in series. 12, primary compensation capacitor C 13 , and the primary coupling coil L 11 Series. Among them, it can be pre-selected to meet ω1L when deployed in the primary side. v11 =1 / ω1(C v12 +C v13 ) of the primary compensation capacitor C 12 , primary compensation capacitor C 13 , and the primary coupling coil L 11 , L v11 is the primary coupling coil L 11 The self-inductance value, C v12 is the primary compensation capacitor C 12 Capacitance value, C v13 is the primary compensation capacitor C 13 The capacitance value of the primary compensation capacitor C 12 , primary compensation capacitor C 13 , and the primary coupling coil L 11 Series resonance can be achieved at the fundamental frequency f1, thereby providing low impedance to the fundamental in the initial AC signal and high impedance to the harmonics in the initial AC signal, thereby attenuating the harmonics in the initial AC signal to obtain an AC signal containing the fundamental and residual harmonics.

[0231] In the first harmonic attenuation circuit, the primary compensation capacitor C 12 , primary compensation capacitor C 13 , and the primary coupling coil L 11 Achieving series resonance at the fundamental frequency f1 can improve the flexibility of device selection.

[0232] In an example, Figure 5 As shown in (a), after the primary side inputs the unipolar modulation signal into the simulated inverter circuit, it drives each switch in the simulated inverter circuit to turn on and off according to the switching timing of each switch indicated by the unipolar modulation signal, thereby controlling the DC signal after noise filtering to pass through the inverter circuit to obtain the initial AC signal; then, the initial AC signal passes through the primary compensation capacitor C that is in series resonance at the fundamental frequency. 12 , primary compensation capacitor C 13 , and the primary coupling coil L 11 , the harmonics in the initial AC signal are attenuated to obtain an AC signal.

[0233] S406: Send the AC signal to the secondary side.

[0234] Exemplarily, the implementation of step S406 is similar to the implementation of step S207. For details, please refer to the description of step S207, which will not be repeated here.

[0235] In an example, Figure 5 As shown, assuming that the digital identifier currently traversed is the second identifier 0, after generating an AC signal according to the unipolar modulation signal, the secondary coupling coil L can be used to 21 and the primary coupling coil L 11 The magnetic coupling between the two transmits the AC signal to Figure 5 (b) The secondary side end indicated.

[0236] Figure 6 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 4 ,like Figure 6 As shown, the method is applied to the secondary side, and the method includes:

[0237] S601. Receive an AC signal transmitted by the primary end; wherein, the AC signal refers to an AC signal generated after the primary end receives an energy transmission signal and converts a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit.

[0238] In one example, the secondary side is an electronic device to be powered.

[0239] For example, the explanation of the primary side, secondary side, energy transmission signal, and digital identification can refer to the description in step S101, and the implementation method of the primary side generating the AC signal can refer to the description in steps S101 to S103, which will not be repeated here.

[0240] In one example, the primary side generates an AC signal and wirelessly transmits the AC signal to the secondary side, and the secondary side can then wirelessly receive the AC signal.

[0241] S602: Determine an energy transmission signal and a power supply signal according to the AC signal.

[0242] In one example, the AC signal may sequentially indicate digital identifiers in the energy transmission signal received by the primary end.

[0243] Exemplarily, after receiving the AC signal transmitted by the primary end, the secondary end can sequentially identify the digital identifiers in the energy transmission signal from the AC signal, and then determine the energy transmission signal based on the digital identifiers in the energy transmission signal identified sequentially.

[0244] At the same time, a signal corresponding to the fundamental wave in the AC signal can be extracted from the AC signal as a power supply signal.

[0245] S603: Power the secondary side through the power supply signal.

[0246] For example, after determining the power supply signal, the secondary side can supply power to the secondary side using the voltage and current in the power supply signal. The power supply can be used as a power source to directly supply power to the secondary side or to charge a battery in the secondary side.

[0247] The wireless energy-based signal transmission method provided in the embodiment of the present application first receives the AC signal transmitted by the primary end; wherein the AC signal refers to the AC signal generated after the primary end receives the energy transmission signal and converts the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit; secondly, the energy transmission signal and the power supply signal are determined according to the AC signal; finally, the secondary end is powered by the power supply signal, so that the energy transmission signal can be determined from the AC signal used to determine the power supply signal at the same time, and there is no need to deploy a separation circuit to separate the AC power used to transmit energy and the AC power used to transmit the energy transmission signal from a signal with two AC power superimposed on it, which can make the secondary end smaller in size and lower in cost.

[0248] Figure 7 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 5 ,like Figure 7 As shown, this embodiment Figure 6 Based on the embodiment, a signal transmission method based on wireless energy is described in detail. The method is applied to the secondary side and includes:

[0249] S701. Receive an AC signal transmitted by the primary end; wherein, the AC signal refers to an AC signal generated after the primary end receives an energy transmission signal and converts a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit.

[0250] Exemplarily, the implementation of step S701 is similar to the implementation of step S207. For details, please refer to the description of step S207, which will not be repeated here.

[0251] S702 : Attenuate the harmonics in the AC signal through a second harmonic attenuation circuit to obtain a target AC signal.

[0252] In one example, a second harmonic attenuation circuit is deployed in the secondary side, and the second harmonic attenuation circuit includes a secondary side compensation capacitor and a secondary side coupling coil connected in series.

[0253] For example, Figure 3 As shown, Figure 3 (b) represents the secondary side, which may include a second harmonic attenuation circuit, a harmonic enhancement circuit, a voltage acquisition circuit 304, an energy transmission signal generation module 305, a rectifier circuit, a filter capacitor Cout, and a load R LThe second harmonic attenuation circuit includes a secondary coupling coil L2 and a secondary compensation capacitor C2 connected in series; the harmonic enhancement circuit includes a resistor Ro, an inductor Lo, and a capacitor Co connected in series; the rectifier circuit may be a full-wave rectifier circuit including MOS transistors D1, D2, D3, and D4; the load R L It can be a battery in the secondary side, or an electronic device in the secondary side that needs to be directly powered.

[0254] The secondary coupling coil L2 and the secondary compensation capacitor C2 can be connected in series to the input terminals of the rectifier circuit, and to the resistor Ro and inductor Lo in the harmonic enhancement circuit respectively; the filter capacitor Cout and the load R L After being connected in parallel, they are connected to both ends of the output of the rectifier circuit; the voltage acquisition circuit 304 is connected to both ends of the capacitor Co; and the energy transmission signal generation module 305 is connected to the voltage acquisition circuit 304 .

[0255] The series secondary coupling coil L2 and the secondary compensation capacitor C2 in the second harmonic attenuation circuit can be pre-selected to meet the ω1L when deployed at the secondary end. v2 =1 / ω1C v2 The secondary coupling coil L2 and the secondary compensation capacitor C2 are configured, wherein ω1 is the angular frequency of the wireless energy-based signal transmission system, ω1=2πf1, f1 is the frequency of the fundamental wave in the signal of the wireless energy-based signal transmission system, which is preset according to actual needs, and L v2 is the self-inductance of the secondary coupling coil L2, C v2 is the capacitance value of the secondary compensation capacitor C2, and then the secondary coupling coil L2 and the secondary compensation capacitor C2 can achieve series resonance at the fundamental frequency f1, thereby providing low impedance to the fundamental wave in the AC signal and high impedance to the harmonics in the AC signal, and then further attenuating the harmonics in the AC signal to obtain the target AC signal containing the fundamental wave and residual harmonics.

[0256] In an example, Figure 3 As shown in (b), after the secondary side receives the AC signal sent by the primary side through the secondary side coupling coil L2, the secondary side coupling coil L2 and the secondary side compensation capacitor C2 can resonate at the fundamental frequency to further attenuate the harmonics of the AC signal and obtain the target AC signal containing the fundamental wave and residual harmonics.

[0257] S703: Determine an energy transmission signal and a power supply signal according to the target AC signal.

[0258] In one example, a harmonic enhancement circuit is deployed in the secondary side.

[0259] In one example, the step of “determining the energy transmission signal according to the target AC signal” in step S703 includes the following steps:

[0260] The first step of determining the energy transmission signal is to enhance the preset harmonics in the target AC signal through the harmonic enhancement circuit to obtain an enhanced target AC signal;

[0261] The second step of determining the energy transmission signal is as follows: determining a target binary signal according to each instantaneous voltage in the enhanced target AC signal; wherein the target binary signal represents a rectangular pulse signal having a first preset voltage value and a second preset voltage value;

[0262] The third step of determining the energy transmission signal: determining a digital identifier based on the target binary signal;

[0263] The fourth step of determining the energy transmission signal: determining the energy transmission signal according to the determined digital identifier.

[0264] In one example, the second step of determining the energy transfer signal includes the following process:

[0265] If the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, the instantaneous voltage is determined as a first preset voltage value;

[0266] If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, the instantaneous voltage is determined as a second preset voltage value;

[0267] The target binary signal is determined according to a time period corresponding to a first preset voltage value in the enhanced target AC signal and a time period corresponding to a second preset voltage value in the enhanced target AC signal.

[0268] In one example, the third step of determining the energy transfer signal includes the following process:

[0269] Obtaining a voltage value in a target binary signal according to a preset time period;

[0270] If the acquired voltage value is the first preset voltage value, determining the digital identifier as the first identifier;

[0271] If the acquired voltage value is the second preset voltage value, the digital identifier is determined to be the second identifier.

[0272] In one example, the step of “determining the power supply signal according to the target AC signal” in step S703 includes the following process:

[0273] In one example, a rectifier circuit is deployed in the secondary side.

[0274] The target AC signal is converted into a DC power supply signal through a rectifier circuit.

[0275] Exemplarily, the preset harmonic can be any harmonic in the target AC signal with different digital identifiers indicating different harmonic contents in the energy transmission signal. There is no limitation to this. In the embodiments of this application, the preset harmonic is described as the third harmonic as an example.

[0276] like Figure 3 As shown in (b), when deployed in the secondary side, the ω2L vo =1 / ω2C vo The inductance Lo and capacitance Co, where ω2=3ω1, L vo is the self-inductance value of the inductor Lo, C vo is the capacitance value of capacitor Co, and thus the inductor Lo and the capacitor Co can realize series resonance at the third harmonic frequency 3f1, thereby providing low impedance to the third harmonic in the AC signal and high impedance to the fundamental wave and other order harmonics in the AC signal, and thus enhancing the third harmonic content in the AC signal to obtain the enhanced target AC signal.

[0277] The first preset voltage value and the second preset voltage value in the target binary signal can be any two different voltage values ​​without limitation. In this application, each embodiment is described by taking the first preset voltage value as 1V and the second preset voltage value as 0V as an example.

[0278] like Figure 3 As shown in (b), after the secondary side obtains the enhanced target AC signal, the initial instantaneous voltage of the enhanced target AC signal can be collected at both ends of the capacitor Co through the voltage acquisition circuit 304. Then, the voltage acquisition circuit 304 takes the absolute value of the initial instantaneous voltage to obtain the instantaneous voltage of the enhanced target AC signal.

[0279] Next, when the voltage acquisition circuit 304 determines that the instantaneous voltage of the enhanced target AC signal is less than or equal to the preset voltage threshold, it outputs a target binary signal of 1V; when the voltage acquisition circuit 304 determines that the instantaneous voltage of the enhanced target AC signal is greater than the preset voltage threshold, it outputs a target binary signal of 0V and inputs the target binary signal into the energy transmission signal generation module 305.

[0280] The preset voltage threshold may be any value between two historical voltage values ​​of the enhanced target AC signal indicating different digital identifiers in the energy transmission signal. For example, based on experience, it is known that the third harmonic content in the AC signal generated by the unipolar frequency-doubled modulation signal corresponding to the first identifier 1 is lower than the third harmonic content in the AC signal generated by the unipolar modulation signal corresponding to the second identifier 0. The preset voltage threshold may be any value between two historical voltage values ​​of the enhanced target AC signal indicating the first identifier 1 and the enhanced target AC signal indicating the second identifier 0. Furthermore, by comparing the instantaneous voltage in the enhanced target AC signal with the preset voltage threshold, it can be determined whether the enhanced target AC signal indicates the first identifier or the second identifier in the energy transmission signal.

[0281] Specifically, after the secondary side inputs the binarized signal into the energy transmission signal generation module 305, it can obtain a voltage value from the target binarized signal every preset time period. Then, if it is determined that the obtained voltage value is 1V, the digital identifier is determined to be the first identifier 1; if it is determined that the obtained voltage value is 0V, the digital identifier is determined to be the second identifier 0.

[0282] After determining each digital identifier in sequence, the secondary side can splice each digital identifier according to the obtained time to obtain an energy transmission signal.

[0283] In an example, Figure 3 As shown in (b), after the secondary side obtains the target AC signal, the target AC signal is enhanced through the secondary side coupling coil L2 and the secondary side compensation capacitor C2 to obtain the target AC signal after the third harmonic enhancement;

[0284] Assuming that the instantaneous voltage of the target AC signal after the third harmonic enhancement is less than the preset voltage threshold in the first preset time period, a target binary signal of 1V is output during this period; assuming that the instantaneous voltage of the target AC signal after the third harmonic enhancement is greater than the preset voltage threshold in the next preset time period, a target binary signal of 0V is output during this period, and the target binary signal is input into the energy transmission signal generation module 305.

[0285] In one example, a range determination algorithm for preset digital identifiers may be used to determine the starting digital identifier and the ending digital identifier of each energy transmission signal.

[0286] After receiving the target binary signal, the energy transmission signal generating module 305 obtains 1V in the first preset time period, and determines that the first digital identifier is the first identifier 1; and obtains 0V in the second preset time period, and determines that the second digital identifier is the first identifier 0. Assuming that the first digital identifier is the digital identifier of the start of the energy transmission signal and the second digital identifier is the digital identifier of the end of the energy transmission signal, the energy transmission signal is determined to be a binary 10.

[0287] In some implementations, the digital identifier may also be determined based on each instantaneous voltage in the enhanced target AC signal.

[0288] Specifically, if the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, the digital identifier is determined to be the first identifier;

[0289] If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, the digital identifier is determined to be the second identifier.

[0290] By determining the digital identifier according to each instantaneous voltage in the enhanced target AC signal, the calculation complexity can be simplified and the efficiency can be improved.

[0291] The power supply signal is determined according to the target AC signal. There are multiple implementation methods, which can be selected according to actual needs without restriction.

[0292] The following examples illustrate various ways to determine the power supply signal based on the target AC signal:

[0293] In one embodiment, the rectifier circuit may be a full-wave rectifier circuit or an active rectifier circuit.

[0294] In one example, after receiving the target AC signal, the secondary side can also convert the target AC signal into a DC power supply signal through a full-wave rectifier circuit.

[0295] In another embodiment, Figure 3 As shown in (b), the target AC signal can also be converted into an initial DC power supply signal through a full-wave rectifier circuit including MOS transistors D1, D2, D3, and D4; and the initial power supply signal is then subjected to noise reduction processing through a filter capacitor Cout to obtain a power supply signal.

[0296] The filter capacitor Cout is used to reduce the noise of the initial power supply signal to obtain a power supply signal, thereby improving the efficiency of powering the secondary side.

[0297] In another embodiment, after obtaining the target AC signal, the secondary side may directly use the target AC signal as a power supply signal.

[0298] S704: Power the secondary side through the power supply signal.

[0299] For example, Figure 3 As shown in (b), after the secondary side determines the power supply signal, the voltage and current in the power supply signal can be used to supply the load R L Provide power supply.

[0300] like Figure 3 As shown, after the inverter circuit at the primary end outputs the initial AC signal, the primary coupling coil L1 and the primary compensation capacitor C1 at the primary end resonate at the fundamental frequency, harmonically attenuating the initial AC signal to obtain an AC signal; the primary coupling coil L1 and the secondary coupling coil L2 transmit the AC signal to the secondary end through magnetic coupling, and the secondary coupling coil L2 and the secondary compensation capacitor C2 at the secondary end also resonate at the fundamental frequency, further harmonically attenuating the AC signal to obtain a target AC signal. Therefore, the fundamental content in the target AC signal is high, and then the power supply signal is determined based on the target AC signal to power the secondary end, which can improve the efficiency of powering the secondary end.

[0301] Figure 8 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 6 ,like Figure 8 As shown, this embodiment Figure 7 Based on the embodiment and simulation circuit, a signal transmission method based on wireless energy is described in detail. The method is applied to the secondary side and includes:

[0302] S801. Receive an AC signal transmitted by the primary end; wherein, the AC signal refers to an AC signal generated after the primary end receives an energy transmission signal and converts a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit.

[0303] Exemplarily, the implementation of step S801 is similar to the implementation of step S207. For details, please refer to the description of step S207, which will not be repeated here.

[0304] S802 : Attenuate the harmonics in the AC signal through a second harmonic attenuation circuit to obtain a target AC signal.

[0305] In one example, a second harmonic attenuation circuit is deployed in the secondary side, and the second harmonic attenuation circuit includes a secondary side compensation capacitor and a secondary side coupling coil connected in series.

[0306] For example, Figure 5 As shown, Figure 5(b) represents the secondary side, which may include a second harmonic attenuation circuit, a harmonic enhancement circuit, a diode 504, a resistor R 22 , capacitor C 23 , resistor R 23 , capacitor C 24 , resistor R 24 , capacitor C 25 , voltmeter 505, voltage conversion circuit 506, energy transmission signal generation module 507, rectifier circuit, filter capacitor C 26 , and load R 25 .

[0307] The second harmonic attenuation circuit includes a secondary coupling coil L connected in series. 21 and the secondary compensation capacitor C 21 ; The harmonic enhancement circuit includes a series inductor L 22 , resistor R 21 , capacitor C 22 , diode 504, a first low-pass filter circuit for filtering frequencies above the third harmonic, a second low-pass filter circuit for filtering frequencies above the third harmonic, and a high-pass filter circuit for filtering frequencies below the third harmonic; the first low-pass filter circuit includes a resistor R 22 , capacitor C 23 The second low-pass filter circuit includes a resistor R 23 , capacitor C 24 ; The high-pass filter circuit includes resistor R 24 , capacitor C 25 .

[0308] The rectifier circuit may include MOS transistors D21, D22, D23, and D24; the load R 25 For resistance.

[0309] Secondary coupling coil L 21 and the secondary compensation capacitor C 21 After being connected in series, they can be connected to the input ends of the rectifier circuit respectively, and respectively to the capacitor C 22 、Inductor L 22 Connection: filter capacitor C 26 and load R 25 After connecting in parallel, connect the two ends of the output of the rectifier circuit; voltmeter 505 and resistor R 24 The two ends of the capacitor C are connected, and the voltage conversion circuit 506 is connected. The voltage conversion circuit 506 is connected to the energy transmission signal generation module 507; 22 One end is connected to a diode 504 and the other end is grounded; the other end of the diode 504 is connected in series with a first low-pass filter circuit, a second low-pass filter circuit, and a high-pass filter circuit.

[0310] The secondary coupling coil L in series in the second harmonic attenuation circuit 21 and the secondary compensation capacitor C 21 , can be pre-selected to meet ω1L when deployed in the secondary side v21 =1 / ω1C v21 The secondary coupling coil L 21 and the secondary compensation capacitor C 21 , where L v21 is the secondary coupling coil L 21 The self-inductance value, C v21 is the secondary side compensation capacitor C 21 The capacitance value of the secondary coupling coil L 21 and the secondary compensation capacitor C 21 Series resonance can be achieved at the fundamental frequency f1, thereby providing low impedance to the fundamental wave in the AC signal and high impedance to the harmonics in the AC signal. The harmonics in the AC signal can then be further attenuated to obtain a target AC signal containing the fundamental wave and residual harmonics.

[0311] To verify Figure 5 Whether the simulation circuit structure of the signal transmission system based on wireless energy is effective is still under investigation. Figure 5 An ammeter 509 and a voltmeter 510 are added to monitor the current flowing through the load R 25 The current and voltage are displayed on the oscilloscope 511. Figure 5 The oscilloscope 508 is used to respectively display the voltage value measured by the voltmeter 505, the voltage value output by the voltage conversion circuit 506, and the voltage value corresponding to the digital identifier in the energy transmission information output by the energy transmission information generating module 507.

[0312] In an example, Figure 5 As shown in (b), after the secondary side receives the AC signal sent by the primary side, it can pass the secondary side coupling coil L 21 and the secondary compensation capacitor C 21 Resonate at the fundamental frequency and further attenuate the harmonics of the AC signal to obtain the target AC signal containing the fundamental wave and residual harmonics.

[0313] S803: Determine an energy transmission signal and a power supply signal according to the target AC signal.

[0314] Exemplarily, the implementation of step S803 is similar to that of step S703 . For details, please refer to the description of step S703 , which will not be repeated here.

[0315] Specifically, the harmonic enhancement circuit in step S803 is different from that in step S703. The harmonic enhancement circuit in step S803 has been introduced in step S802 and will not be described again.

[0316] In one example, the inductor L in the harmonic enhancement circuit in step S803 is 22 , resistor R 21 , capacitor C 22 The implementation method of the harmonic enhancement circuit is similar to that in step S703 and will not be repeated here.

[0317] In an example, Figure 5 As shown in (b), the series inductor L 22 , resistor R 21 , capacitor C 22 The third harmonic content in the AC signal can be enhanced to obtain an initial first enhanced target AC signal.

[0318] Then, the negative voltage in the initial first enhanced target AC signal is filtered out by the diode 504 to obtain the initial second enhanced target AC signal, thereby filtering out part of the noise.

[0319] Next, the first low-pass filter circuit performs attenuation processing on the third harmonic and above frequencies on the target AC signal after the initial second enhancement, thereby obtaining the target AC signal after the initial third enhancement.

[0320] Afterwards, the second low-pass filter circuit is used to further attenuate the frequencies above the third harmonic of the target AC signal after the initial third enhancement, thereby obtaining the target AC signal after the initial fourth enhancement.

[0321] Next, a high-pass filter circuit is used to perform attenuation processing of the third harmonic frequency on the target AC signal after the initial fourth enhancement, thereby obtaining a target AC signal after the third harmonic enhancement.

[0322] The AC signal passes through the series inductor L in turn. 22 , resistor R 21 , capacitor C 22 The diode 504, the first low-pass filter circuit, the second low-pass filter circuit, and the high-pass filter circuit obtain the target AC signal after the third harmonic enhancement, which can further enhance the third harmonic content in the AC signal. Then, the resistance R collected by the voltmeter 505 24 The voltage of the target AC signal after the third harmonic enhancement can more accurately reflect the third harmonic content level in the signal, wherein the voltage of the target AC signal after the third harmonic enhancement is positively correlated with the third harmonic content level in the signal.

[0323] The voltage conversion circuit includes a first voltage comparator, a second voltage comparator and a logic gate. It pre-generates a voltage signal corresponding to a preset voltage threshold VRF, and connects the voltage signal to the positive input terminal of the first voltage comparator. The target AC signal after the third harmonic enhancement is connected to the negative input terminal of the first voltage comparator. It is pre-configured that if the voltage at the positive input terminal of the first voltage comparator is greater than the voltage at the negative input terminal, a target binary signal of 1V is output; if the voltage at the positive input terminal of the first voltage comparator is less than or equal to the voltage at the negative input terminal, a target binary signal of 0V is output.

[0324] At the same time, a voltage signal corresponding to a negative preset voltage threshold VRF is generated in advance, and the voltage signal is connected to the inverting input terminal of the second voltage comparator. The target AC signal after the third harmonic enhancement is also connected to the positive input terminal of the second voltage comparator. It is pre-configured that if the voltage at the positive terminal of the second voltage comparator is greater than the voltage at the inverting terminal, a target binary signal of 1V is output; when the voltage at the positive terminal of the second voltage comparator is less than or equal to the voltage at the inverting terminal, a target binary signal of 0V is output.

[0325] The logic gate is used to control the first voltage comparator or the second voltage comparator to execute when the corresponding conditions are met.

[0326] In an example, Figure 5 As shown in (b), after the secondary side receives the target AC signal, the target AC signal passes through the secondary side coupling coil L 21 and the secondary compensation capacitor C 21 , firstly, the third harmonic in the target AC signal is enhanced by a harmonic enhancement circuit to obtain a target AC signal after third harmonic enhancement;

[0327] Assuming that the instantaneous voltage of the target AC signal after third harmonic enhancement is greater than the preset voltage threshold in the first preset time period, a target binary signal of 0V is output during this period; if the instantaneous voltage of the target AC signal after third harmonic enhancement is less than the preset voltage threshold in the second preset time period, a target binary signal of 1V is output during this period; if the instantaneous voltage of the target AC signal after third harmonic enhancement is greater than the preset voltage threshold in the third preset time period, a target binary signal of 0V is output during this period; if the instantaneous voltage of the target AC signal after third harmonic enhancement is less than the preset voltage threshold in the fourth preset time period, a target binary signal of 1V is output during this period, and the target binary signal is input into the energy transmission signal generation module 507.

[0328] After receiving the target binary signal, the energy transmission signal generating module 507 determines the first digital identifier as the second identifier 0, the second digital identifier as the first identifier 1, the third digital identifier as the second identifier 0, and the fourth digital identifier as the first identifier 1 in sequence according to time. Assuming that the first digital identifier is the digital identifier of the start of the energy transmission signal and the fourth digital identifier is the digital identifier of the end of the energy transmission signal, the energy transmission signal is determined to be binary 0101.

[0329] Figure 9 The schematic diagram of the result of the secondary side simulation receiving energy transmission signal provided in this application is as follows Figure 9 As shown, Figure 9 (a) represents Figure 5 (b) The voltage obtained by the voltmeter 505 is the voltage value of the target AC signal after the third harmonic is enhanced, where the horizontal axis represents time (in seconds) with a starting point of 0.016 seconds, and the vertical axis represents voltage, where VRF represents a preset voltage threshold with a starting point of -10 V;

[0330] Figure 9 (b) represents Figure 5 (b) The voltage output by the voltage conversion circuit 506, that is, the voltage value of the target binary signal output by the voltage conversion circuit 506 after the target AC signal after the third harmonic enhancement passes through the voltage conversion circuit 506, where the horizontal axis represents time (in seconds) with a starting point of 0.016 seconds, and the vertical axis represents voltage with a starting point of 0V;

[0331] Figure 9 (c) represents Figure 5 (b) The voltage output by the energy transmission signal generation module 507 is the voltage value corresponding to the energy transmission signal output after the target binary signal passes through the energy transmission signal generation module 507. The meanings of the horizontal and vertical axes are the same as those of Figure 9 (b) The same.

[0332] Because it takes time for the target binary signal to generate the energy transfer signal, the same digital identifier Figure 9 (c) The time of appearance will be longer than Figure 9 (a) and Figure 9 (b) Appears late.

[0333] In this simulation, Figure 9 In (a), between t1 and t2, an energy transmission signal is indicated in the target AC signal after the third harmonic enhancement. The energy transmission signal includes 4 digital identifiers. The preset time period is t4, where t4 is (t2-t1) / 4. Figure 9As shown in (a), starting from t1, the voltage values ​​corresponding to the first t4 time period to the fourth t4 time period are: greater than the preset voltage threshold VRF, less than the preset voltage threshold VRF, greater than the preset voltage threshold VRF, and less than the preset voltage threshold VRF.

[0334] like Figure 9 As shown in (b), in the target binary signal, starting from t1, the voltage values ​​corresponding to the first t4 time period to the fourth t4 time period are: 0V, 1V, 0V, 1V, which conforms to the corresponding relationship between the preset voltage threshold and the digital identifier. Therefore, the voltage conversion circuit 506 correctly converts the target AC signal after the third harmonic enhancement into the target binary signal.

[0335] like Figure 9 As shown in (c), in the signal output by the energy transmission signal generating module 507, the digital identifiers corresponding to the energy transmission signals from 0.018 to t3 correspond to Figure 9 (a) and Figure 9 (b) The digital identifier indicated between t1 and t2, Figure 9 In (c), starting from 0.018, the voltage values ​​corresponding to the first t4 period to the fourth t4 period are: 0V, 1V, 0V, 1V. This voltage value sequence is consistent with Figure 9 The voltage value sequence in (b) is the same, so the energy transmission signal generation module 507 correctly outputs the energy transmission signal according to the target binary signal.

[0336] S804: Power the secondary side through the power supply signal.

[0337] For example, Figure 5 As shown in (b), after the secondary side determines the power supply signal, the voltage and current in the power supply signal can be used to supply the load R 25 Charge.

[0338] Figure 10 Schematic diagram of the process of the signal transmission method based on wireless energy provided by this application Figure 7 ,like Figure 10 As shown, this embodiment combines Figure 4 Examples and Figure 8 In this embodiment, based on a simulation circuit, a signal transmission method based on wireless energy from the primary side to the secondary side is generally described. The method includes:

[0339] S1001. The primary side receives an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier being at least one of a first identifier and a second identifier, and the energy transmission signal is used to instruct the primary side to transmit a signal to the secondary side.

[0340] Exemplarily, the implementation of step S1001 is similar to that of step S401 . For details, please refer to the description of step S401 , which will not be repeated here.

[0341] S1002: The primary side performs traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier.

[0342] Exemplarily, the implementation of step S1002 is similar to the implementation of step S402. For details, please refer to the description of step S402, which will not be repeated here.

[0343] S1003: The primary end determines a modulation circuit corresponding to the currently traversed digital identifier according to a preset association relationship.

[0344] Exemplarily, the implementation of step S1003 is similar to the implementation of step S403. For details, please refer to the description of step S403, which will not be repeated here.

[0345] S1004: The primary end converts the currently traversed digital identifier into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0346] Exemplarily, the implementation of step S1004 is similar to the implementation of step S404. For details, please refer to the description of step S404, which will not be repeated here.

[0347] S1005: The primary end generates an AC signal according to the modulation signal.

[0348] Exemplarily, the implementation of step S1005 is similar to the implementation of step S405. For details, please refer to the description of step S405, which will not be repeated here.

[0349] S1006: The primary side sends the AC signal to the secondary side.

[0350] Exemplarily, the implementation of step S1006 is similar to the implementation of step S406. For details, please refer to the description of step S406, which will not be repeated here.

[0351] S1007 : The secondary side attenuates the harmonics in the AC signal through a second harmonic attenuation circuit to obtain a target AC signal.

[0352] Exemplarily, the implementation of step S1007 is similar to the implementation of step S802. For details, please refer to the description of step S802, which will not be repeated here.

[0353] S1008. The secondary side determines an energy transmission signal and a power supply signal according to the target AC signal.

[0354] Exemplarily, the implementation of step S1008 is similar to the implementation of step S803. For details, please refer to the description of step S803, which will not be repeated here.

[0355] S1009: The secondary side supplies power to the secondary side through the power supply signal.

[0356] Exemplarily, the implementation of step S1009 is similar to the implementation of step S804. For details, please refer to the description of step S804, which will not be repeated here.

[0357] Figure 11 The following is a schematic diagram of the monitoring results of the current and voltage of the load during the simulation process provided by this application, as shown in Figure 11 As shown, the horizontal axis represents time, the unit is 10 -3 Seconds, vertical axis represents Figure 5 The load R 25 The voltage or current, where waveform 1101 is the current waveform and waveform 1102 is the voltage waveform, both waveforms are in 2×10 -3 After a few seconds, it stabilizes, so Figure 5 The load R 25 Efficient charging can be performed, and the charging process is not affected by the modulation circuit switching between different digital identifiers at the primary side.

[0358] Figure 12 This is a schematic diagram of the structure of the wireless energy-based signal transmission device provided in this application. Figure 1 ,like Figure 12 As shown, the device 120 is applied to the primary side, and two modulation circuits are deployed in the primary side. The modulation circuit is used to convert the form of the signal; the device 120 includes:

[0359] A receiving module 1201 is configured to receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier being at least one of a first identifier and a second identifier, the energy transmission signal being used to indicate a transmission signal from the primary end to the secondary end, and the two modulation circuits being a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit, the two modulation circuits corresponding to the first identifier and the second identifier, respectively;

[0360] The conversion module 1202 is configured to convert the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit; wherein the modulation signal refers to a signal representing the digital identifier;

[0361] The generating module 1203 is configured to generate an AC signal according to the modulation signal and send the AC signal to the secondary side.

[0362] In a possible implementation, the conversion module 1202 is specifically configured to:

[0363] Performing traversal processing on the digital identifiers in the energy transmission signal to determine the currently traversed digital identifier;

[0364] Determine the modulation circuit corresponding to the currently traversed digital identifier according to the preset association relationship;

[0365] The currently traversed digital identifier is converted into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

[0366] In a possible implementation, the “converting the currently traversed digital identifier into a modulated signal by using a modulation circuit corresponding to the currently traversed digital identifier” in the conversion module 1202 is specifically configured to:

[0367] If the currently traversed digital identifier is the first identifier, the first identifier is converted into a corresponding modulation signal through a unipolar frequency multiplication modulation circuit;

[0368] If the currently traversed digital identifier is the second identifier, the second identifier is converted into a corresponding modulation signal through a unipolar modulation circuit.

[0369] In one possible implementation, a driving circuit is disposed in the primary end, and the driving circuit is used to amplify the signal;

[0370] In a possible implementation, the generating module 1203 is specifically configured to:

[0371] The modulation signal is amplified in voltage and current by the driving circuit to obtain an amplified modulation signal;

[0372] An AC signal is generated based on the amplified modulated signal.

[0373] In one possible implementation, a DC power supply and an inverter circuit are deployed in the primary side;

[0374] In a possible implementation, “generating an AC signal according to the amplified modulated signal” in the generating module 1203 is specifically configured to:

[0375] Generate a DC signal through a DC power supply;

[0376] According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain an AC signal.

[0377] In a possible implementation, a first harmonic attenuation circuit is deployed in the primary end, and the first harmonic attenuation circuit includes a primary compensation capacitor and a primary coupling coil connected in series;

[0378] In one possible implementation, the step of “controlling the DC signal to pass through the inverter circuit to obtain the AC signal according to the amplified modulation signal” in the generation module 1203 is specifically configured to:

[0379] According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain the initial AC signal; wherein the initial AC signal includes the fundamental wave and harmonic waves;

[0380] The harmonics in the initial AC signal are attenuated by the first harmonic attenuation circuit to obtain an AC signal.

[0381] The wireless energy-based signal transmission device provided in this embodiment can execute the method provided in the above-mentioned method embodiment applied to the primary side. Its implementation principle and technical effects are similar, and are not described in detail in this embodiment.

[0382] Figure 13 This is a schematic diagram of the structure of the wireless energy-based signal transmission device provided in this application. Figure 2 ,like Figure 13 As shown, the device 130 is applied to the secondary side, where the secondary side is an electronic device to be powered. The device 130 includes:

[0383] The receiving module 1301 is configured to receive an AC signal transmitted by the primary side. The AC signal refers to an AC signal generated by the primary side receiving the energy transmission signal and converting the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit.

[0384] A determination module 1302 is configured to determine an energy transmission signal and a power supply signal based on the AC signal;

[0385] The power supply module 1303 is used to supply power to the secondary side through a power supply signal.

[0386] In a possible implementation, a second harmonic attenuation circuit is deployed in the secondary side, and the second harmonic attenuation circuit includes a secondary side compensation capacitor and a secondary side coupling coil connected in series;

[0387] In a possible implementation, the determining module 1302 is specifically configured to:

[0388] The harmonics in the AC signal are attenuated by the second harmonic attenuation circuit to obtain the target AC signal;

[0389] According to the target AC signal, the energy transmission signal and the power supply signal are determined.

[0390] In one possible implementation, a harmonic enhancement circuit is deployed in the secondary side;

[0391] In a possible implementation, the “determining the energy transmission signal according to the target AC signal” in the determination module 1302 is specifically configured to:

[0392] The preset harmonics in the target AC signal are enhanced by the harmonic enhancement circuit to obtain an enhanced target AC signal;

[0393] Determining a target binary signal based on each instantaneous voltage in the enhanced target AC signal; wherein the target binary signal represents a rectangular pulse signal having a first preset voltage value and a second preset voltage value;

[0394] Determine the digital identity according to the target binary signal;

[0395] An energy transmission signal is determined according to the determined digital identifier.

[0396] In a possible implementation, the “determining a target binary signal according to each instantaneous voltage in the enhanced target AC signal” in the determination module 1302 is specifically configured to:

[0397] If the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, the instantaneous voltage is determined as a first preset voltage value;

[0398] If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, the instantaneous voltage is determined as a second preset voltage value;

[0399] The target binary signal is determined according to a time period corresponding to a first preset voltage value in the enhanced target AC signal and a time period corresponding to a second preset voltage value in the enhanced target AC signal.

[0400] In a possible implementation, the “determining a digital identifier according to the target binarized signal” in the determination module 1302 is specifically configured to:

[0401] Obtaining a voltage value in a target binary signal according to a preset time period;

[0402] If the acquired voltage value is the first preset voltage value, determining the digital identifier as the first identifier;

[0403] If the acquired voltage value is the second preset voltage value, the digital identifier is determined to be the second identifier.

[0404] In a possible implementation, a rectifier circuit is disposed in the secondary side;

[0405] In a possible implementation, the “determining the power supply signal according to the target AC signal” in the determination module 1302 is specifically configured to:

[0406] The target AC signal is converted into a DC power supply signal through a rectifier circuit. The wireless energy-based signal transmission device provided in this embodiment can execute the method provided in the above-mentioned method embodiment applied to the secondary side. Its implementation principle and technical effects are similar, and this embodiment will not be repeated here.

[0407] Figure 14 This is a schematic diagram of the structure of the electronic device provided in this application. Figure 14 As shown, the electronic device 140 provided in this embodiment includes: at least one processor 1401 and a memory 1402. Optionally, the device 140 also includes a communication component 1403. The processor 1401, the memory 1402, and the communication component 1403 are connected via a bus 1404.

[0408] During the specific implementation process, at least one processor 1401 executes the computer-executable instructions stored in the memory 1402, so that the at least one processor 1401 performs the above method.

[0409] The specific implementation process of the processor 1401 can be found in the above method embodiment. Its implementation principle and technical effects are similar and will not be repeated here in this embodiment.

[0410] The electronic device 140 provided in this embodiment may be a primary end or a secondary end.

[0411] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASICs), etc. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the present invention may be directly executed by a hardware processor or by a combination of hardware and software modules in the processor.

[0412] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0413] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Buses can be classified into address buses, data buses, and control buses. For ease of illustration, the buses in the drawings of this application are not limited to just one bus or just one type of bus.

[0414] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned method applied to the primary side; or, when executed by a processor, implements the above-mentioned method applied to the secondary side.

[0415] The present application also provides a signal transmission system based on wireless energy, which includes a primary side and a secondary side; wherein the primary side is used to execute any of the above methods applied to the primary side, and the secondary side is used to execute any of the above methods applied to the secondary side.

[0416] The present application also provides a computer-readable storage medium, which stores computer-executable instructions. When a processor executes the computer-executable instructions, the above-mentioned method applied to the primary side is implemented; or, when the processor executes the computer-executable instructions, the above-mentioned method applied to the secondary side is implemented.

[0417] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile memory device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0418] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0419] The division of units is merely a logical functional division; actual implementations may employ alternative divisions, such as combining or integrating multiple units or components into another system, or omitting or disabling certain features. Furthermore, any direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units, either through an interface, electrical, mechanical, or other means.

[0420] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0421] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0422] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program code.

[0423] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0424] Finally, it should be noted that those skilled in the art will readily identify other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The present invention is not limited to the precise structure described above and illustrated in the accompanying drawings, and various modifications and variations may be made without departing from the scope thereof. The scope of the present invention is limited solely by the appended claims.

Claims

1. A signal transmission method based on wireless energy, characterized in that: The method is applied to the primary side; two modulation circuits are deployed in the primary side, and the modulation circuits are used to convert the form of the signal; the method includes: Receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier is at least one of a first identifier and a second identifier, the energy transmission signal is used to instruct the primary end to transmit a signal to the secondary end, the two modulation circuits are a unipolar frequency multiplication modulation circuit and a unipolar modulation circuit, and the two modulation circuits correspond to the first identifier and the second identifier, respectively; The modulation circuit converts the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal; wherein the modulation signal refers to a signal representing the digital identifier; An AC signal is generated according to the modulation signal, and the AC signal is sent to the secondary end.

2. The method according to claim 1, characterized in that Converting a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit includes: Performing traversal processing on the digital identifier in the energy transmission signal to determine the currently traversed digital identifier; Determining, according to a preset association relationship, a modulation circuit corresponding to the currently traversed digital identifier; The currently traversed digital identifier is converted into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier.

3. The method according to claim 2, characterized in that Converting the currently traversed digital identifier into a modulation signal through a modulation circuit corresponding to the currently traversed digital identifier includes: If the currently traversed digital identifier is the first identifier, converting the first identifier into a corresponding modulation signal through the unipolar frequency multiplication modulation circuit; If the currently traversed digital identifier is the second identifier, the second identifier is converted into a corresponding modulation signal through the unipolar modulation circuit.

4. The method according to any one of claims 1 to 3, characterized in that A driving circuit is disposed in the primary end, and the driving circuit is used to amplify the signal; generating an AC signal according to the modulated signal includes: Amplifying the voltage and current of the modulation signal by the driving circuit to obtain an amplified modulation signal; An AC signal is generated according to the amplified modulated signal.

5. The method according to claim 4, characterized in that The primary side is provided with a DC power supply and an inverter circuit; generating an AC signal according to the amplified modulated signal includes: generating a DC signal through the DC power supply; According to the amplified modulation signal, the DC signal is controlled to pass through the inverter circuit to obtain the AC signal.

6. The method according to claim 5, characterized in that A first harmonic attenuation circuit is disposed in the primary end, wherein the first harmonic attenuation circuit includes a primary compensation capacitor and a primary coupling coil connected in series; According to the amplified modulation signal, controlling the DC signal to pass through the inverter circuit to obtain the AC signal includes: According to the amplified modulation signal, controlling the DC signal to pass through the inverter circuit to obtain an initial AC signal; wherein the initial AC signal includes a fundamental wave and harmonics; The first harmonic attenuation circuit attenuates the harmonics in the initial AC signal to obtain the AC signal.

7. A signal transmission method based on wireless energy, characterized in that: The method is applied to a secondary side end, where the secondary side end is an electronic device to be powered; the method includes: Receive an AC signal transmitted by the primary end; wherein the AC signal refers to an AC signal generated by receiving an energy transmission signal at the primary end and converting a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit; determining the energy transmission signal and the power supply signal according to the AC signal; The secondary side is powered by the power supply signal.

8. The method according to claim 7, characterized in that A second harmonic attenuation circuit is disposed in the secondary side end, and the second harmonic attenuation circuit includes a secondary side compensation capacitor and a secondary side coupling coil connected in series; Determining the energy transmission signal and the power supply signal according to the AC signal includes: Attenuating the harmonics in the AC signal through the second harmonic attenuation circuit to obtain a target AC signal; The energy transmission signal and the power supply signal are determined according to the target AC signal.

9. The method according to claim 8, characterized in that A harmonic enhancement circuit is deployed in the secondary side; Determining the energy transmission signal according to the target AC signal includes: The harmonic enhancement circuit enhances the preset harmonics in the target AC signal to obtain an enhanced target AC signal; Determining a target binary signal based on each instantaneous voltage in the enhanced target AC signal; wherein the target binary signal represents a rectangular pulse signal having a first preset voltage value and a second preset voltage value; determining a digital identifier according to the target binary signal; The energy transmission signal is determined according to the determined digital identifier.

10. The method according to claim 9, characterized in that Determining a target binary signal according to each instantaneous voltage in the enhanced target AC signal includes: If the instantaneous voltage in the enhanced target AC signal is less than or equal to a preset voltage threshold, determining the instantaneous voltage as a first preset voltage value; If the instantaneous voltage in the enhanced target AC signal is greater than a preset voltage threshold, determining the instantaneous voltage as a second preset voltage value; The target binary signal is determined according to a time period corresponding to a first preset voltage value in the enhanced target AC signal and a time period corresponding to a second preset voltage value in the enhanced target AC signal.

11. The method according to claim 9, characterized in that Determining a digital identifier according to the target binary signal includes: Obtaining a voltage value in the target binary signal according to a preset time period; If the acquired voltage value is the first preset voltage value, determining the digital identifier as the first identifier; If the acquired voltage value is the second preset voltage value, the digital identifier is determined to be the second identifier.

12. The method according to any one of claims 8 to 11, characterized in that A rectifier circuit is disposed in the secondary side; and a power supply signal is determined according to the target AC signal, including: The target AC signal is converted into a DC power supply signal through the rectifier circuit.

13. A signal transmission device based on wireless energy, characterized in that: The device is applied to the primary side, and two modulation circuits are deployed in the primary side, and the modulation circuits are used to convert the form of the signal; the device includes: A receiving module, configured to receive an energy transmission signal; wherein the energy transmission signal includes at least one digital identifier, the digital identifier being at least one of a first identifier and a second identifier, the energy transmission signal being used to indicate a transmission signal from the primary end to the secondary end, and the two modulation circuits corresponding to the first identifier and the second identifier, respectively; a conversion module, configured to convert the digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through the modulation circuit; wherein the modulation signal refers to a signal representing the digital identifier; A generating module is used to generate an AC signal according to the modulation signal, and send the AC signal to the secondary end.

14. A signal transmission device based on wireless energy, characterized in that: The device is applied to a secondary side end, where the secondary side end is an electronic device to be powered, and the device includes: A receiving module, configured to receive an AC signal transmitted from a primary end; wherein the AC signal refers to an AC signal generated by receiving an energy transmission signal from the primary end and converting a digital identifier corresponding to the modulation circuit in the energy transmission signal into a modulation signal through a modulation circuit; a determination module, configured to determine the energy transmission signal and the power supply signal according to the AC signal; The power supply module is used to supply power to the secondary side through the power supply signal.

15. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of claims 1 to 6; or, the processor executes the method according to any one of claims 7 to 12.

16. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method according to any one of claims 1 to 6; or, the computer-executable instructions, when executed by a processor, are used to implement the method according to any one of claims 7 to 12.

17. A computer program product, characterized in that The method comprises a computer program, which implements the method according to any one of claims 1 to 6 when the computer program is executed by a processor; or, which implements the method according to any one of claims 7 to 12 when the computer program is executed by a processor.

18. A signal transmission system based on wireless energy, characterized in that: The system includes a primary side and a secondary side; The primary side is used to execute the method according to any one of claims 1 to 6, and the secondary side is used to execute the method according to any one of claims 7 to 12.

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