Method and system for electromagnetic induction energy harvesting by adaptive control of power transmission lines

Abstract

This application provides an electromagnetic induction energy harvesting method and system by adaptive control of a power transmission conductor, the electromagnetic induction energy harvesting method by adaptive control of a power transmission conductor includes: obtaining a first electromagnetic induction electromotive force based on an electromagnetic induction energy harvesting device fixed to the power transmission conductor; if the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, controlling the electromagnetic induction energy harvesting device to adaptively control the intrusion or retraction of the magnetic core unit into or out of the coil unit based on the first electromagnetic induction electromotive force to obtain a second electromagnetic induction electromotive force; performing smoothing, rectification and voltage conversion processing on the first and / or second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; and selecting whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetic induction output voltage.

Description

[Technical Field]

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 26, 2024, application number 202410346976.8, and all contents of said application are incorporated into this application by reference.

[0002] This application relates to the technical field of power monitoring auxiliary equipment, and more particularly to an electromagnetic induction energy harvesting method and system by adaptive control of power transmission conductors. [Background technology]

[0003] Given the importance of operational safety in power transmission lines and the increasing potential safety risks posed by accidents, it is necessary to install a large number of secondary low-voltage devices, such as monitoring and control equipment, on the power cables and their surrounding environments to ensure the normal and safe operation of power cables. Powering secondary low-voltage devices on power transmission lines presents a significant challenge due to the long transmission distances, diverse power transmission methods, and complex environments. Therefore, developing a power supply that offers good performance, is suitable for multiple operating environments including outdoor settings, and is easy to maintain and install, and applying it to online monitoring of power cable status parameters to guarantee reliability is a requirement for ensuring the safe production and safe power supply of the entire power system.

[0004] CN115528791A discloses an adaptive energy harvesting and release method, system, and apparatus for an inductive energy harvesting circuit, in which a first voltage threshold or a second voltage threshold is determined as the release voltage threshold based on the real-time voltage of an energy storage capacitor, specifically, when the real-time voltage of the energy storage capacitor is less than the full charge voltage, i.e., the energy storage capacitor is not fully charged and the energy harvesting output of the inductive energy harvesting circuit does not exceed what is required for the working load, the controller controls the release voltage threshold to the first voltage threshold, which is equivalent to increasing the release voltage threshold, thereby allowing the inductive energy harvesting circuit to acquire more energy and charge the energy storage capacitor, and enabling the energy storage capacitor to power the working load when the energy of the inductive energy harvesting circuit is released. If the real-time voltage of the energy storage capacitor is greater than or equal to the full charge voltage, i.e., the energy storage capacitor is fully charged and the energy harvesting output of the inductive energy harvesting circuit already exceeds what is required for the operating load, the controller controls the second voltage threshold to be the discharge voltage threshold, which is equivalent to lowering the discharge voltage threshold. This allows the inductive energy harvesting circuit to discharge energy in the case of a low output voltage at the feed end, preventing the current of the inductive energy harvesting circuit from becoming too large and overloading the operating load, thus achieving the objectives of adaptive energy harvesting and discharge and automatic protection of the inductive energy harvesting circuit. However, because the inductive energy harvesting circuit cannot adaptively adjust the structure between the magnetic core and the coil, it is prone to magnetic saturation, has a short magnetic induction time, and cannot induce and harvest energy for a longer period to obtain more electrical energy. [Overview of the project]

[0005] This invention relates to an electromagnetic induction energy harvesting device that is fixed to a power transmission line and adaptively controls the intrusion or retraction of the magnetic core unit into the coil unit, thereby enabling electromagnetic The present invention provides an electromagnetic induction energy harvesting method and system that uses adaptive control of transmission conductors to acquire induced electromotive force and select whether to perform power supply processing or charging processing for electrical equipment.

[0006] An electromagnetic induction energy harvesting method using adaptive control of a power transmission line acquires a first electromagnetic induction electromotive force based on an electromagnetic induction energy harvesting device fixed to the power transmission line. The electromagnetic induction energy harvesting device comprises a magnetic core unit, a processor unit, a voltage protection unit, a smoothing and rectifying unit, a voltage conversion unit, a stretching unit, and a coil unit. The processor unit is connected to the stretching unit, the smoothing and rectifying unit is connected to the voltage protection unit and the voltage conversion unit, respectively, the voltage protection unit is connected to the coil unit, the stretching unit is fixedly connected to the magnetic core unit, the magnetic core unit is provided within the coil unit, and the processor unit stretches the stretching control signal. The system is configured to transmit signals to a contraction unit, the contraction unit being configured to control the inward or outward movement of the magnetic core unit into the coil unit based on the contraction control signal, thereby obtaining an electromagnetically induced electromotive force; if the first electromagnetically induced electromotive force is smaller than the operating electromagnetically induced electromotive force, controlling the electromagnetically induced energy harvesting device to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetically induced electromotive force to obtain a second electromagnetically induced electromotive force; performing smoothing, rectification, and voltage conversion processing on the first and / or second electromagnetically induced electromotive force to obtain an electromagnetically induced output voltage; and selecting whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetically induced output voltage.

[0007] The magnetic core unit and the coil unit are both cylindrical in shape. The magnetic core unit comprises a first magnetic core subunit, a second magnetic core subunit, a magnetic core fixing subunit, and a magnetic core connection subunit. The magnetic core fixing subunit is fixedly connected to the first magnetic core subunit, the second magnetic core subunit, and the magnetic core connection subunit provided between the first and second magnetic core subunits. The coil unit comprises a first coil subunit and a second coil subunit connected to a voltage protection unit.

[0008] The electromagnetic induction energy harvesting device is fixed to a power transmission conductor by a fixed unit, and obtaining a first electromagnetic induction electromotive force based on the electromagnetic induction energy harvesting device fixed to the power transmission conductor includes controlling a processor unit in the electromagnetic induction energy harvesting device to transmit an expansion / contraction control signal to an expansion / contraction unit, thereby controlling the expansion / contraction unit to move in or out of the first coil subunit of the magnetic core unit based on the expansion / contraction control signal, and obtaining a first electromagnetic induction electromotive force, wherein the expression for the first electromagnetic induction electromotive force is as follows:

number

[0009] Controlling the electromagnetic induction energy harvesting device to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetic induction electromotive force, thereby obtaining a second electromagnetic induction electromotive force, is the process of electromagnetic induction energy harvesting. This includes controlling the device to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force, and the above-mentioned control of the electromagnetic induction energy harvesting device to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force is The process involves determining a second coil insertion control signal or a second coil retraction control signal based on a coil voltage signal, and controlling the processor unit in the electromagnetic induction energy harvesting device to transmit the second coil insertion control signal or the second coil retraction control signal to the telescopic unit, thereby enabling the telescopic unit to control the insertion or retraction of the magnetic core unit into or into the second coil subunit based on the second coil insertion control signal or the second coil retraction control signal, and to adaptively adjust this to obtain a second electromagnetic induction electromotive force, wherein the expression for the second electromagnetic induction electromotive force is as follows:

number

[0010] The process of performing smoothing, rectification, and voltage conversion on at least one of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage includes: if the first electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, performing smoothing, rectification, and voltage conversion on the first electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; if the first electromagnetic induction electromotive force is less than the operating electromagnetic induction electromotive force and the second electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, shutting off the first coil subunit and performing smoothing, rectification, and voltage conversion on the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage; and if the first electromagnetic induction electromotive force is less than the operating electromagnetic induction electromotive force and the second electromagnetic induction electromotive force is also less than the operating electromagnetic induction electromotive force, performing smoothing, rectification, and voltage conversion on the sum of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage.

[0011] Selecting whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetic induction output voltage includes performing a voltage comparison between the electromagnetic induction output voltage and the threshold voltage, selecting whether to supply power or charge based on the voltage comparison result, performing charging processing of the electrical energy storage unit if the electromagnetic induction output voltage is less than the threshold voltage, and / or supplying power to the electrical equipment by the electrical energy storage unit, and performing power supply processing for electrical equipment if the electromagnetic induction output voltage is greater than or equal to the threshold voltage.

[0012] The electromagnetic induction energy harvesting system, which uses adaptive control of power transmission lines, comprises a magnetic core unit, a processor unit, a voltage protection unit, a smoothing and rectifying unit, a voltage conversion unit, an expansion / contraction unit, and a coil unit. The processor unit is connected to the expansion / contraction unit, the smoothing and rectifying unit is connected to the voltage protection unit and the voltage conversion unit, the voltage protection unit is connected to the coil unit, the expansion / contraction unit is fixedly connected to the magnetic core unit, the magnetic core unit is provided within the coil unit, the processor unit is configured to transmit an expansion / contraction control signal to the expansion / contraction unit, and the expansion / contraction unit is configured to control the intrusion or retraction of the magnetic core unit into or out of the coil unit based on the expansion / contraction control signal. This enables the electromagnetic induction energy harvesting device to acquire electromagnetic induction electromotive force, and to acquire a first electromagnetic induction electromotive force based on the electromagnetic induction energy harvesting device fixed to the power transmission line, and to acquire a first electromagnetic induction The system includes an analysis and control unit configured to, if the electromotive force is smaller than the operating electromagnetic induction electromotive force, control the electromagnetic induction energy harvesting device to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetic induction electromotive force, obtain a second electromagnetic induction electromotive force, perform smoothing, rectification, and voltage conversion processing on the first and / or second electromagnetic induction electromotive force, obtain an electromagnetic induction output voltage, and select whether to perform power supply processing or charging processing on electrical equipment based on the electromagnetic induction output voltage.

[0013] The magnetic core unit and the coil unit are both cylindrical in shape. The magnetic core unit comprises a first magnetic core subunit, a second magnetic core subunit, a magnetic core fixing subunit, and a magnetic core connection subunit. The magnetic core fixing subunit is fixedly connected to the first magnetic core subunit, the second magnetic core subunit, and the magnetic core connection subunit provided between the first and second magnetic core subunits. The coil unit comprises a first coil subunit and a second coil subunit connected to a voltage protection unit.

[0014] The voltage conversion unit comprises a MAX5035 chip, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a transistor D1, a first rheostat R1, a second rheostat R2, and an inductor L1. Pin 1 of the MAX5035 chip is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to one end of the inductor L1, pin 8 of the MAX5035 chip, and the cathode of the transistor D1, respectively. The anode of the transistor D1 is grounded, and the other end of the inductor L1 is connected to one end of the third capacitor C3. The other end of the third capacitor C3 is grounded, the pin 2 end of the chip MAX5035 is connected to one end of the second capacitor C2, the other end of the second capacitor C2 is connected to the pin 3 end of the chip MAX5035, the pin 7 end of the chip MAX5035 is connected to one end of the second rheostat R2, one end of the fourth capacitor C4 and the electrical equipment, respectively, the pin 5 end of the chip MAX5035 is connected to the other end of the second rheostat R2 and one end of the first rheostat R1, respectively, and the pin 6 end of the chip MAX5035, the other end of the first rheostat R1 and the other end of the fourth capacitor C4 are all grounded.

[0015] The electromagnetic induction energy harvesting device is fixed to the power transmission line by a fixing unit, and the analysis and control unit controls the processor unit in the electromagnetic induction energy harvesting device to transmit an expansion / contraction control signal to the expansion / contraction unit, thereby controlling the expansion / contraction unit to move in or out of the first coil subunit of the magnetic core unit based on the expansion / contraction control signal, thereby acquiring the first electromagnetic induction electromotive force. The expression for the first electromagnetic induction electromotive force is as follows:

number

[0016] The analysis and control unit controls the electromagnetic induction energy harvesting device to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force. In this way, the electromagnetic induction energy harvesting device is controlled to adaptively control the penetration or retraction of the coil unit into the magnetic core unit based on the first electromagnetic induction electromotive force to obtain a second electromagnetic induction electromotive force. Based on the coil voltage signal, a second coil penetration control signal or a second coil retraction control signal is determined, and the processor unit in the electromagnetic induction energy harvesting device is controlled to transmit the second coil penetration control signal or the second coil retraction control signal to the telescopic unit. In this way, the telescopic unit controls the penetration or retraction of the second coil subunit of the magnetic core unit based on the second coil penetration control signal or the second coil retraction control signal, and adaptively adjusts to obtain a second electromagnetic induction electromotive force. In this way, the electromagnetic induction energy harvesting device is configured to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force. The expression formula of the second electromagnetic induction electromotive force is as follows:

Equation

[0017] When the first electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, the analysis and control unit performs smoothing rectification and voltage conversion on the first electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage. When the first electromagnetic induction electromotive force is less than the operating electromagnetic induction electromotive force and the second electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, the first coil subunit is cut off, and smoothing rectification and voltage conversion are performed on the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage. When the first electromagnetic induction electromotive force is less than the operating electromagnetic induction electromotive force and the second electromagnetic induction electromotive force is also less than the operating electromagnetic induction electromotive force, smoothing rectification and voltage conversion are performed on the sum of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage. In this way, the analysis and control unit is configured to perform smoothing rectification and voltage conversion on the first electromagnetic induction electromotive force or / and the second electromagnetic induction electromotive force to obtain an electromagnetic induction output voltage.

[0018] The analysis and control unit performs voltage comparison on the electromagnetic induction output voltage and the threshold voltage. Among them, the expression of the threshold voltage is as follows:

Equation

[0019] [Figure 1] This is a schematic diagram of the structure of an electromagnetic induction energy harvesting device according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of the electrical connections between multiple units in an electromagnetic induction energy harvesting device according to an embodiment of the present application. [Figure 3] This is a circuit diagram of a voltage conversion unit according to an embodiment of the present invention. [Figure 4] This is a flowchart of an electromagnetic induction energy harvesting method by adaptive control of power transmission conductors according to an embodiment of the present invention. [Figure 5] This is a schematic diagram showing an electromagnetic induction energy harvesting device according to an embodiment of the present invention, fixed to a power transmission wire. [Figure 6] This is a schematic diagram of the structure of an electromagnetic induction energy harvesting system using adaptive control of power transmission wires according to an embodiment of the present invention. [Modes for carrying out the invention]

[0020] The present application will be described in detail below with reference to the drawings and specific embodiments. While these embodiments are based on the technical aspects of the present application and provide detailed embodiments and specific operating procedures, the scope of protection of the present application is not limited to the embodiments described below.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art within the scope of this disclosure. In this document, terms used in the specification of this disclosure are for illustrative purposes only and are not intended to limit the disclosure.

[0022] The embodiments described in the following exemplary examples are not representative of all embodiments consistent with the present disclosure. On the contrary, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure, as detailed in the appended claims.

[0023] Example 1 As shown in FIGS. 1-2 and FIGS. 5-6, this embodiment provides an electromagnetic induction energy harvesting device 10 including a magnetic core unit 201, a processor unit 701, a voltage protection unit 301, a smoothing rectification unit 401, a voltage conversion unit 601, a telescopic unit 1, and a coil unit 501.

[0024] In one example, the magnetic core unit 201 is fixedly connected to the telescopic unit 1. The magnetic core unit 201 includes a first magnetic core sub-unit 3, a second magnetic core sub-unit 2, a magnetic core fixing sub-unit 4, and a magnetic core connection sub-unit 6. The magnetic core fixing sub-unit 4 is fixedly connected to the first magnetic core sub-unit 3, the second magnetic core sub-unit 2, and the connection sub-unit 6 respectively, and the magnetic core connection sub-unit 6 is provided between the first magnetic core sub-unit 3 and the second magnetic core sub-unit 2. The magnetic core connection sub-unit 6 may be a non-magnetic material or an air gap. The magnetic permeability of the first magnetic core sub-unit 3 may be greater than, equal to, or less than the magnetic permeability of the second magnetic core sub-unit 2, and specifically is determined according to the actual situation. Any other examples with an increase or decrease in the number of magnetic core sub-units and coil sub-units are within the protection scope of this application.

[0025] In this embodiment, both the magnetic core unit 201 and the coil unit 501 are cylindrical in shape. Because the shape of the magnetic core unit 201 is cylindrical, compared with the "day" - shaped structure of the conventional magnetic core, the fixation to the power transmission wire 101 of the electromagnetic induction energy harvesting device 10 with a very simple fixation structure is easier. Conventional closed - loop type electromagnetic induction energy harvesting devices with a "day" - shaped magnetic core structure, etc., have power transmission wires The fixing structure is too complex because it needs to pass through that structure and is fixed to the power transmission wire. In other embodiments, the shapes of the magnetic core unit 201 and the coil unit 501 may be other shapes, and any other embodiments with modified shapes fall within the scope of protection of this application.

[0026] The coil unit 501 comprises a first coil subunit 5 and a second coil subunit 7, and the voltage protection unit 301 is connected to the first coil subunit 5 and the second coil subunit 7. The first coil subunit 5 is configured to acquire a first electromagnetic induced electromotive force, and the second coil subunit 7 is configured to acquire a second electromagnetic induced electromotive force (perform voltage compensation). The number of turns of the coil in the first coil subunit 5 may be greater than, equal to, or less than the number of turns of the coil in the second coil subunit 7, and will be determined specifically according to the actual circumstances. Changes due to an increase or decrease in the number of coil subunits and the number of turns of the coil subunits are both within the scope of protection of this application.

[0027] The telescopic unit 1 is configured to control the inward or outward movement of the magnetic core unit 201 into the coil unit 501 based on telescopic control signals, which include an inward control signal and an outward control signal, the inward control signal including a first coil inward control signal (used to control the inward movement of the first coil subunit 5) and a second coil inward control signal (used to control the inward movement of the second coil subunit 7), and the outward control signal including a first coil outward control signal (used to control the outward movement of the first coil subunit 5) and a second coil outward control signal (used to control the outward movement of the second coil subunit 7).

[0028] As shown in Figure 2, the electrical connection method between the multiple units is such that the processor unit 701 is connected to the expandable unit 1, the smoothing and rectifying unit 401 is connected to the voltage protection unit 301 and the voltage conversion unit 601, the voltage protection unit 301 is connected to the coil unit 501, the expandable unit 1 is fixedly connected to the magnetic core unit 201, the magnetic core unit 201 is provided inside the coil unit 501, the processor unit 701 is configured to transmit an expandable / contractile control signal to the expandable / contractile unit 1, and the expandable / contractile unit 1 is configured to control the inward or outward movement of the magnetic core unit 201 into the coil unit 501 based on the expandable / contractile control signal, thereby obtaining an electromagnetically induced electromotive force.

[0029] In one embodiment, the electromagnetic induction energy harvesting device 10 further comprises an electrical energy storage unit.

[0030] In one embodiment, as shown in Figure 3, the voltage conversion unit 601 comprises a chip MAX5035, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a transistor D1, a first rheostat R1, a second rheostat R2, and an inductor L1. Pin 1 of the chip MAX5035 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to one end of the inductor L1, pin 8 of the chip MAX5035, and the cathode of the transistor D1, respectively. The anode of the transistor D1 is grounded, and the other end of the inductor L1 is connected to the third capacitor C3 One end of the third capacitor C3 is connected to the first rheostat R2 and the other end of the first rheostat R1, and the other end of the third capacitor C3 is grounded. Pin 2 of the chip MAX5035 is connected to one end of the second capacitor C2 and the other end of the second capacitor C2 is connected to pin 3 of the chip MAX5035. Pin 7 of the chip MAX5035 is connected to one end of the second rheostat R2, one end of the fourth capacitor C4 and the electrical equipment, respectively. Pin 5 of the chip MAX5035 is connected to the other end of the second rheostat R2 and one end of the first rheostat R1, respectively. Pin 6 of the chip MAX5035, the other end of the first rheostat R1 and the other end of the fourth capacitor C4 are all grounded.

[0031] Example 2 As shown in Figure 4, this embodiment provides an electromagnetic induction energy harvesting method by adaptive control of power transmission lines, which includes the following steps.

[0032] In S101, a first electromagnetic induction electromotive force is obtained based on an electromagnetic induction energy harvesting device fixed to the power transmission line.

[0033] S101 includes the following steps.

[0034] 1) As shown in Figure 5, the electromagnetic induction energy harvesting device 10 is fixed to the power transmission line 101 by a fixing unit 102. The structure of the electromagnetic induction energy harvesting device 10 is as described in Example 1, and this example will not be described again here.

[0035] 2) By controlling the processor unit 701 in the electromagnetic induction energy harvesting device 10 to transmit an expansion / contraction control signal to the expansion / contraction unit 1, the expansion / contraction unit 1 controls the inward or outward movement of the magnetic core unit 201 into the first coil subunit 5 based on the expansion / contraction control signal, thereby obtaining the first electromagnetic induction electromotive force.

[0036] The expansion / contraction control signal includes an intrusion control signal and a retraction control signal, of which the intrusion control signal includes a first coil intrusion control signal (used to control the intrusion of the first coil subunit 5) and a second coil intrusion control signal (used to control the intrusion of the second coil subunit 7), and the retraction control signal includes a first coil retraction control signal (used to control the retraction of the first coil subunit 5) and a second coil retraction control signal (used to control the retraction of the second coil subunit 7). The electromagnetic induction energy harvesting device 10 is fixed to the power transmission conductor 101 by the fixing unit 102, and a first electromagnetic induction electromotive force is obtained based on the electromagnetic induction energy harvesting device 10, that is, the intrusion or retraction of the first magnetic core subunit 3 into the first coil subunit 5 is controlled based on the first coil intrusion control signal or the first coil retraction control signal, and a first electromagnetic induction electromotive force is obtained.

[0037] The first coil insertion control signal includes a level 1 insertion control signal, a level 2 insertion control signal, and a level 3 insertion control signal. The processor unit 701 transmits the level 1 insertion control signal, the level 2 insertion control signal, or the level 3 insertion control signal to the retractable unit 1. The retractable unit 1 receives the level 1 insertion control signal, the level 2 insertion control signal, or the level 3 insertion control signal transmitted from the processor unit 701 and controls the degree to which the magnetic core unit 201 penetrates into the coil unit 501 based on the level 1 insertion control signal, the level 2 insertion control signal, or the level 3 insertion control signal. In other words, the retractable unit 1 controls the degree to which the first magnetic core subunit 3 penetrates into the first coil subunit 5 based on the level 1 insertion control signal, the level 2 insertion control signal, or the level 3 insertion control signal. The setting of the second coil insertion control signal is similar to that of the first coil insertion control signal described above and will not be repeated here.

[0038] The retraction control signal includes a Level 1 retraction control signal, a Level 2 retraction control signal, and a Level 3 retraction control signal. The processor unit 701 transmits the Level 1 retraction control signal, the Level 2 retraction control signal, or the Level 3 retraction control signal to the retractable unit 1. The retractable unit 1 receives the Level 1 retraction control signal, the Level 2 retraction control signal, or the Level 3 retraction control signal transmitted from the processor unit 701 and controls the degree of retraction of the magnetic core unit 201 into the coil unit 501 based on the Level 1 retraction control signal, the Level 2 retraction control signal, or the Level 3 retraction control signal. That is, the retractable unit 1 controls the degree of retraction of the first coil of the first magnetic core subunit 3 based on the Level 1 retraction control signal, the Level 2 retraction control signal, or the Level 3 retraction control signal. This controls the degree of retraction into the sub-unit 5. The setting of the second coil retraction control signal is similar to that of the first coil retraction control signal described above and will not be repeated here. The number of retraction control signals and the number of levels of the retraction control signals can be set according to the actual usage conditions, and any increase or decrease in the number of retraction control signals and the number of retraction control signals falls within the scope of protection of this application.

[0039] The expression for the first electromagnetic induction electromotive force is as follows:

number

[0040] In S102, if the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, the electromagnetic induction energy harvesting device is controlled to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetic induction electromotive force, thereby obtaining the second electromagnetic induction electromotive force.

[0041] The electromagnetic induction energy harvesting device 10 is adjusted and controlled by the first electromagnetic induction electromotive force, and a second electromagnetic induction electromotive force is obtained based on the second coil subunit 7, thereby obtaining a total electromagnetic induction electromotive force. If the total electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, the operating electromagnetic induction electromotive force is the minimum electromotive force required to meet the electrical requirements of the electronic equipment.

[0042] If the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, the electromagnetic induction energy harvesting device 10 is controlled to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force, the processor unit 701 determines a second coil insertion control signal or a second coil retraction control signal based on the coil voltage signal, transmits the second coil insertion control signal or the second coil retraction control signal to the telescopic unit 1, and the telescopic unit 1 controls the insertion or retraction of the magnetic core unit 201 into the second coil subunit 7 based on the second coil insertion control signal or the second coil retraction control signal, and adaptively adjusts to obtain a second electromagnetic induction electromotive force.

[0043] The processor unit 701 acquires a voltage signal output from the coil unit 501 and generates an inward control signal or a retraction control signal based on the coil voltage signal, which it then transmits to the retractable unit 1. The key to this invention is "adaptivity," that is, the inward or retraction of the magnetic core being adaptive. For example, if the processor unit 701 is in the process of controlling the inward or outward movement of the magnetic core unit 201 into the second coil subunit 7, the current in the conductor may change, which may cause the total electromagnetic induction electromotive force to be too large or too small. If the electromagnetic induction electromotive force exceeds a set maximum electromotive force value, the expansion / contraction unit 1 controls the inward movement of the magnetic core unit 201 into the coil unit 501 based on the second coil retraction control signal. If the electromagnetic induction electromotive force becomes smaller after the magnetic core unit 201 has retracted into the coil unit 501 and does not reach the operating voltage, the magnetic core unit 201 is controlled to continue to retract into the coil unit 501. The electromagnetic induction electromotive force is adjusted through a series of adaptive inward and outward adjustment processes until the total electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force. That is, this inward or outward control is adaptive, and the expansion / contraction of the magnetic core unit 201 into the coil unit 501 is controlled based on the magnitude of the induced electromotive force to output an appropriate voltage. The degree can be adjusted by oneself.

[0044] For example, if the Level 1 electromagnetic induction electromotive force obtained by the retractable unit 1 controlling the degree of penetration of the magnetic core unit 201 into the coil unit 501 based on the Level 1 penetration control signal is smaller than the operating electromagnetic induction electromotive force, the processor unit 701 transmits a Level 2 penetration control signal to the retractable unit 1, and the retractable unit 1 receives the Level 2 penetration control signal transmitted from the processor unit 701 and controls the magnetic core unit 201 to continue penetrating into the coil unit 501 based on the Level 2 penetration control signal, thereby obtaining a Level 2 electromagnetic induction electromotive force. If the Level 2 electromagnetic induction electromotive force is still smaller than the operating electromagnetic induction electromotive force, the processor unit 701 transmits a Level 3 penetration control signal to the retractable unit 1, and the retractable unit 1 receives the Level 3 penetration control signal transmitted from the processor unit 701 and controls the magnetic core unit 201 to continue penetrating into the coil unit 501 based on the Level 3 penetration control signal, thereby obtaining a Level 3 electromagnetic induction electromotive force. If the Level 3 electromagnetic induction electromotive force is still smaller than the operating electromagnetic induction electromotive force, the processor unit 701 transmits a second coil insertion control signal to the expandable unit 1, which receives the second coil insertion control signal transmitted from the processor unit 701 and controls the magnetic core unit 201 to continue inserting into the coil unit 501 based on multiple levels of the second coil insertion control signal, and so on until the resulting electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force.

[0045] The expression for the second electromagnetic induction electromotive force is as follows:

number

[0046] In S103, smoothing, rectification, and voltage conversion are performed on the first electromagnetic induced electromotive force and / or the second electromagnetic induced electromotive force to obtain an electromagnetic induced output voltage that stabilizes operation.

[0047] There are three possible situations:

[0048] 1. Based on the first electromagnetically induced electromotive force, the electromagnetically induced output voltage is determined. If the first electromagnetically induced electromotive force is greater than or equal to the operating electromagnetically induced electromotive force, i.e., if voltage compensation processing is not required and a second electromagnetically induced electromotive force is not generated, then smoothing, rectification, and voltage conversion are directly performed on the first electromagnetically induced electromotive force to obtain the electromagnetically induced output voltage.

[0049] 2. Based on the second electromagnetic induction electromotive force, the electromagnetic induction output voltage is determined. If the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, the voltage compensation process in step S102 is required. At this time, if the generated second electromagnetic induction electromotive force is larger than or equal to the operating electromagnetic induction electromotive force, it is stated that the system can operate using only the second electromagnetic induction electromotive force. The first electromagnetic induction electromotive force is reduced to zero by shutting off the first coil subunit, and then smoothing, rectification, and voltage conversion are performed on the second electromagnetic induction electromotive force to obtain the electromagnetic induction output voltage.

[0050] 3. Based on the first and second electromagnetic induction electromotive forces, determine the electromagnetic induction output voltage. If the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, then the voltage in step S102 is determined. Compensation processing needs to be performed, and in this process, a second electromagnetic induction electromotive force is generated. If the second electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, it cannot operate independently by the second electromagnetic induction electromotive force. Therefore, the first electromagnetic induction electromotive force is compensated by the second electromagnetic induction electromotive force (that is, the two are added together), and the total electromagnetic induction electromotive force is obtained. It is necessary to perform smoothing rectification and voltage conversion processing on the total electromagnetic induction electromotive force to obtain the electromagnetic induction output voltage. In such a case, in step S102, the entry or retraction into the second coil unit of the magnetic core unit is adaptively controlled until the total electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force.

[0051] In S104, based on the electromagnetic induction output voltage, it is selected whether to perform power supply processing for the electrical equipment or charging processing.

[0052] Step S104 includes the following steps.

[0053] 1) Perform voltage comparison on the electromagnetic induction output voltage and the threshold voltage.

[0054] In one embodiment, the expression formula of the threshold voltage is as follows.

Number

[0055] 2) Select whether to supply power or charge based on the voltage comparison result. If the electromagnetic induction output voltage is smaller than the threshold voltage, perform charging processing on the electrical energy storage unit, and / or supply power to the electrical equipment by the electrical energy storage unit. If the electromagnetic induction output voltage is greater than or equal to the threshold voltage, perform power supply processing for the electrical equipment.

[0056] This invention determines a threshold value based on the first rheostat R1 and the second rheostat R2 in the voltage conversion unit 601, performs a voltage comparison with the electromagnetic induction output voltage, and selects whether to supply power or charge based on the voltage comparison result. As a result, the threshold value is not a fixed, preset value, but can be determined according to different scenarios, further improving the stability of the output voltage of the electromagnetic induction energy harvesting device 10. Conventional voltage conversion modules do not set a threshold value and only perform simple voltage conversion, but this invention, by setting and adjusting the threshold value according to the actual usage conditions using the first rheostat R1 and the second rheostat R2, can improve the stability of the output voltage of the electromagnetic induction energy harvesting device 10.

[0057] Example 3 As shown in Figures 1-6, this embodiment provides an electromagnetic induction energy harvesting system that uses adaptive control of power transmission lines, comprising an electromagnetic induction energy harvesting device 10 and an analysis and control unit 20. The electromagnetic induction energy harvesting device 10 comprises a magnetic core unit 201, a processor unit 701, a voltage protection unit 301, a smoothing and rectifying unit 401, a voltage conversion unit 601, a telescopic unit 1, and a coil unit 501. The processor unit 701 is connected to the telescopic unit 1, and the smoothing and rectifying unit 401 is connected to the voltage protection unit 301 and the voltage conversion unit 601. The expandable unit 1 is fixedly connected to the coil unit 501, the magnetic core unit 201 is located inside the coil unit 501, the processor unit 701 is configured to transmit an expandable / contractible control signal to the expandable / contractible unit 1, and the expandable / contractible unit 1 is configured to control the inward or outward movement of the magnetic core unit 201 into the coil unit 501 based on the expandable / contractible control signal, thereby acquiring electromagnetic induction electromotive force, and the analysis and control unit 20 is based on the electromagnetic induction energy harvesting device 10 fixed to the power transmission conductor 101. The system is configured to then acquire a first electromagnetic induction electromotive force, and if the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, control the electromagnetic induction energy harvesting device 10 to adaptively control the inward or outward movement of the magnetic core unit 201 into the coil unit 501 based on the first electromagnetic induction electromotive force to acquire a second electromagnetic induction electromotive force, perform smoothing, rectification, and voltage conversion processing on the first and / or second electromagnetic induction electromotive force to acquire an electromagnetic induction output voltage, and then select whether to perform power supply processing for electrical equipment or charging processing based on the electromagnetic induction output voltage.

[0058] Those skilled in the art will clearly understand that, for the sake of ease and conciseness of explanation, the structure of the electromagnetic induction energy harvesting apparatus 10 can be described by referring to the content of the above-described Example 1, and the specific operating process of the described analysis and control unit 20 can be described by referring to the corresponding process in Example 2 of the above-described method, which will not be repeated here.

[0059] Compared to related technologies, this invention can achieve the following effects.

[0060] 1. This invention enables the acquisition of electromagnetic induction electromotive force by fixing an electromagnetic induction energy harvesting device to a power transmission conductor and adaptively controlling the intrusion or retraction of the magnetic core unit into or out of the coil unit, thereby enabling the selection of whether to perform power supply processing or charging processing for electrical equipment.

[0061] 2. This application determines the threshold value based on the first rheostat R1 and the second rheostat R2 in the voltage conversion unit, performs voltage comparison on it and the electromagnetic induction output voltage, and selects whether to supply power or charge based on the voltage comparison result. As a result, the threshold value is not a fixed preset value and can be determined according to different scenarios, further enhancing the stability of the output voltage of the electromagnetic induction energy harvesting device.

[0062] 3. Both the magnetic core unit and the coil unit of this application are cylindrical in shape. Compared with the "day" - shaped structure of the conventional magnetic core, the fixation of the power transmission wire 101 of the electromagnetic induction energy harvesting device by a very simple fixed structure is easier, and maintenance and installation are more convenient.

[0063] 4. This application sets a plurality of incoming control signals and a plurality of retracting control signals respectively, and controls the degree of penetration and the degree of retraction into the coil unit of the magnetic core unit, thereby enhancing the stability of the output voltage of the electromagnetic induction energy harvesting device.

[0064] In the specification of this application and the above - mentioned drawings, the terms "first", "second", "third", etc. do not necessarily need to be used to explain a specific order or priority, but are for distinguishing similar objects. The data used in this way can be replaced when appropriate. It should be understood that the embodiments of this application described here can be implemented in an order other than those illustrated or described here, for example. Also, the terms "comprising", "having" and any variations thereof are intended to cover non - exclusive inclusion, for example, including a series of steps or units of a process, method, system, product or device, not necessarily explicitly listed The steps or units listed are not limited to those listed, and may include other steps or units that are not explicitly mentioned or that are specific to these processes, methods, products, or apparatus. Unless otherwise specified, this does not preclude the existence of other identical or equivalent elements in the processes, methods, products, or apparatus that include such elements. For example, when used, terms such as "first," "second," etc., are used to indicate nomenclature and not any particular order.

[0065] When one element is perceived as being "connected" to another, it may be directly connected to the other element, or it may be connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., when electrical signals or data are transmitted between the connected objects.

[0066] In this application, it should be understood that "at least one" means one or more, and "multiple" means two or more. "And / or" is used to describe the relationship between related objects and indicates that three relationships are possible. For example, "A and / or B" can indicate three cases: A alone exists, B alone exists, or A and B exist simultaneously, where A and B may be singular or plural. The symbol " / " generally indicates that the preceding and succeeding related objects are in an "or" relationship. "At least one of the following" or similar expressions means any combination of these terms, including any combination of single or multiple terms. For example, "at least one of a, b or c" could mean a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c may be singular or plural.

[0067] In some embodiments relating to this application, it should be understood that the disclosed systems, apparatus and methods may be implemented in other ways. For example, the embodiments of the apparatus described above are illustrative only, and for example, the division of the units is merely the division of one logical function and may be implemented in a different manner, for example, multiple units or assemblies may be combined or integrated into another system, or some features may not be considered or implemented. On the other hand, the connections, direct connections or communication connections between things shown or discussed may be indirect connections or communication connections by some interfaces, apparatus or units, and may be electrical, mechanical or in other forms.

[0068] The units described above as separating members may or may not be physically separated, and the members indicated as units may or may not be physical units; that is, they may be located in one place or distributed among multiple network units. Depending on the actual needs, some or all of these units can be selected to achieve the objectives of the embodiment described herein.

[0069] Furthermore, the multiple functional units in the embodiments of this application may be integrated into a single processing unit, the multiple units may exist physically individually, or two or more units may be integrated into a single unit. The integrated unit may be implemented in hardware form or in the form of a software functional unit.

[0070] The integrated unit may be implemented in the form of a software function unit and, if sold or used as an independent product, may be stored on a single computer-readable storage medium. Based on this understanding, the technical aspects of the present application may essentially be implemented in the form of a software product, the computer software product of which is stored on a single storage medium and on a single computer device (personal computer, server, or network machine). A device (which may be a container, etc.) includes a plurality of instructions for performing all or some of the steps of the method described in the embodiment of this application. The aforementioned storage medium also includes a plurality of types of media capable of storing program code, such as USB memory, portable hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. [Explanation of Symbols]

[0071] 1...Telescopic unit, 2...Second magnetic core subunit, 3...First magnetic core subunit, 4...Magnetic core fixing subunit, 5...First coil subunit, 6...Magnetic core connection subunit, 7...Second coil subunit, 101...Power transmission wire, 102...Fixing unit, 201...Magnetic core unit, 301...Voltage protection unit, 401...Smoothing rectification unit, 501...Coil unit, 601...Voltage conversion unit, 701...Processor unit, 10...Electromagnetic induction energy harvesting device, 20...Analysis and control unit

Claims

1. A first electromagnetic induction electromotive force is obtained based on an electromagnetic induction energy harvesting device fixed to a power transmission conductor. The electromagnetic induction energy harvesting device comprises a magnetic core unit, a processor unit, a voltage protection unit, a smoothing and rectifying unit, a voltage conversion unit, an expansion / contraction unit, and a coil unit. The processor unit is connected to the expansion / contraction unit, the smoothing and rectifying unit is connected to the voltage protection unit and the voltage conversion unit, respectively, the voltage protection unit is connected to the coil unit, the expansion / contraction unit is fixedly connected to the magnetic core unit, the magnetic core unit is provided within the coil unit, the processor unit is configured to transmit an expansion / contraction control signal to the expansion / contraction unit, and the expansion / contraction unit is configured to control the intrusion or retraction of the magnetic core unit into or out of the coil unit based on the expansion / contraction control signal. This is used to obtain an electromagnetic induction electromotive force. In response to the fact that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, the electromagnetic induction energy harvesting device is controlled to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetic induction electromotive force, thereby obtaining a second electromagnetic induction electromotive force. The process involves performing smoothing, rectification, and voltage conversion on at least one of the first electromagnetic induced electromotive force and the second electromagnetic induced electromotive force to obtain an electromagnetic induced output voltage. This includes selecting whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetic induction output voltage, A method for harvesting electromagnetic induction energy through adaptive control of power transmission lines.

2. The magnetic core unit and the coil unit are both cylindrical in shape. The magnetic core unit comprises a first magnetic core subunit, a second magnetic core subunit, a magnetic core fixing subunit, and a magnetic core connecting subunit. The magnetic core fixing subunit is fixedly connected to the first magnetic core subunit, the second magnetic core subunit, and the magnetic core connecting subunit provided between the first and second magnetic core subunits. The coil unit comprises a first coil subunit and a second coil subunit connected to the voltage protection unit. The electromagnetic induction energy harvesting method by adaptive control of power transmission conductors as described in claim 1.

3. The electromagnetic induction energy harvesting device is fixed to the power transmission conductor by a fixing unit, and the acquisition of the first electromagnetic induction electromotive force based on the electromagnetic induction energy harvesting device fixed to the power transmission conductor is as follows: The process includes controlling the processor unit in the electromagnetic induction energy harvesting apparatus to transmit an expansion / contraction control signal to the expansion / contraction unit, thereby controlling the expansion / contraction unit to move in or out of the magnetic core unit into the first coil subunit based on the expansion / contraction control signal, thereby obtaining a first electromagnetic induction electromotive force, wherein the expression for the first electromagnetic induction electromotive force is as follows: [Math 1] V １ This is the first electromagnetic induction electromotive force, and N １ μ is the number of coil turns of the first coil subunit. １ S is the magnetic permeability of the first magnetic core subunit. １ ω is the equivalent cross-sectional area of ​​the first coil subunit, ω is the angular velocity, and i ｙ１ L is the effective current value of the first coil subunit. １ This is the magnetic path length of the first coil magnetic core. The electromagnetic induction energy harvesting method by adaptive control of power transmission conductors as described in claim 2.

4. The above-mentioned electromagnetic induction energy harvesting device is controlled to adaptively control the inward or outward movement of the magnetic core unit into the coil unit based on the first electromagnetic induction electromotive force, thereby obtaining a second electromagnetic induction electromotive force. This includes controlling the electromagnetic induction energy harvesting device to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force, The above-mentioned method of controlling the electromagnetic induction energy harvesting device to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force is: The process includes determining a second coil insertion control signal or a second coil retraction control signal based on a coil voltage signal, and controlling the processor unit in the electromagnetic induction energy harvesting device to transmit the second coil insertion control signal or the second coil retraction control signal to the telescopic unit, thereby enabling the telescopic unit to control and adaptively adjust the insertion or retraction of the magnetic core unit into or out of the second coil subunit based on the second coil insertion control signal or the second coil retraction control signal to obtain the second electromagnetic induction electromotive force, wherein the expression for the second electromagnetic induction electromotive force is as follows: [Math 2] V ２ is the second electromagnetic induction electromotive force, N ２ is the number of turns of the coil of the second coil subunit, μ ２ is the magnetic permeability of the second magnetic core subunit, S ２ is the equivalent cross-sectional area of the second coil subunit, ω is the angular velocity, i ｙ２ is the effective value of the current of the second coil subunit, L ２ is the magnetic path length of the second coil magnetic core The electromagnetic induction energy harvesting method by adaptive control of power transmission conductors as described in claim 2.

5. Performing smoothing, rectification, and voltage conversion processes on at least one of the first and second electromagnetic induced electromotive forces described above to obtain an electromagnetic induced output voltage is: Upon determining that the first electromagnetic induced electromotive force is greater than or equal to the operating electromagnetic induced electromotive force, smoothing rectification and voltage conversion processes are performed on the first electromagnetic induced electromotive force to obtain the electromagnetic induced output voltage. Upon receiving the result that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, and the second electromagnetic induction electromotive force is larger than or equal to the operating electromagnetic induction electromotive force, the first coil subunit is shut off, smoothing rectification and voltage conversion are performed on the second electromagnetic induction electromotive force, and the electromagnetic induction output voltage is obtained. The method includes, upon receiving that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, and the second electromagnetic induction electromotive force is also smaller than the operating electromagnetic induction electromotive force, performing smoothing rectification and voltage conversion on the sum of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force to obtain the electromagnetic induction output voltage, The electromagnetic induction energy harvesting method by adaptive control of power transmission conductors as described in claim 2.

6. The selection of whether to perform power supply processing or charging processing for electrical equipment based on the aforementioned electromagnetic induction output voltage is as follows: A voltage comparison is performed with respect to the aforementioned electromagnetic induction output voltage and threshold voltage. This includes selecting whether to supply power or charge based on the voltage comparison result, The selection of whether to supply power or charge based on the voltage comparison results mentioned above is, Upon finding that the electromagnetic induction output voltage is lower than the threshold voltage, at least one of the following is performed: charging the electrical energy storage unit and supplying power to the electrical equipment using the electrical energy storage unit. The process includes, upon receiving that the electromagnetic induction output voltage is greater than or equal to the threshold voltage, performing power supply processing for electrical equipment, The electromagnetic induction energy harvesting method by adaptive control of power transmission conductors as described in claim 1.

7. The device comprises a magnetic core unit (201), a processor unit (701), a voltage protection unit (301), a smoothing and rectifying unit (401), a voltage conversion unit (601), a telescopic unit (1), and a coil unit (501), wherein the processor unit (701) is connected to the telescopic unit (1), the smoothing and rectifying unit (401) is connected to the voltage protection unit (301) and the voltage conversion unit (601), the voltage protection unit (301) is connected to the coil unit (501), and the telescopic unit ( 1) is fixedly connected to the magnetic core unit (201), the magnetic core unit (201) is provided within the coil unit (501), the processor unit (701) is configured to transmit expansion / contraction control signals to the expansion / contraction unit (1), and the expansion / contraction unit (1) is configured to control the inward or outward movement of the magnetic core unit (201) into the coil unit (501) based on the expansion / contraction control signals, thereby providing an electromagnetic induction energy harvesting device (10) that acquires electromagnetic induction electromotive force. The system includes an analysis and control unit (20) configured to obtain a first electromagnetic induction electromotive force based on the electromagnetic induction energy harvesting device (10) fixed to the power transmission conductor (101), and, upon receiving that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, to control the electromagnetic induction energy harvesting device (10) to adaptively control the intrusion or retraction of the magnetic core unit (201) into the coil unit (501) based on the first electromagnetic induction electromotive force, to obtain a second electromagnetic induction electromotive force, to perform smoothing, rectification and voltage conversion processing on at least one of the first and second electromagnetic induction electromotive forces, to obtain an electromagnetic induction output voltage, and to select whether to perform power supply processing for electrical equipment or charging processing based on the electromagnetic induction output voltage, An electromagnetic induction energy harvesting system using adaptive control of power transmission lines.

8. The magnetic core unit (201) and the coil unit (501) are both cylindrical in shape. The magnetic core unit (201) comprises a first magnetic core subunit (3), a second magnetic core subunit (2), a magnetic core fixing subunit (4), and a magnetic core connection subunit (6). The magnetic core fixing connection subunit (4) is fixedly connected to the first magnetic core subunit (3), the second magnetic core subunit (2), and the magnetic core connection subunit (6) provided between the first magnetic core subunit (3) and the second magnetic core subunit (2). The coil unit (502) comprises a first coil subunit (5) and a second coil subunit (7) connected to the voltage protection unit (301). An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 7.

9. The voltage conversion unit (601) comprises a chip MAX5035, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a transistor D1, a first rheostat R1, a second rheostat R2, and an inductor L1. Pin 1 of the chip MAX5035 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to one end of the inductor L1, pin 8 of the chip MAX5035, and the cathode of the transistor D1, respectively. The anode of the transistor D1 is grounded, and the inductor The other end of the terminal L1 is connected to one end of the third capacitor C3, the other end of the third capacitor C3 is grounded, the pin 2 end of the chip MAX5035 is connected to one end of the second capacitor C2, the other end of the capacitor C2 is connected to the pin 3 end of the chip MAX5035, the pin 7 end of the chip MAX5035 is connected to one end of the second rheostat R2, one end of the fourth capacitor C4 and the electrical equipment, respectively, the pin 5 end of the chip MAX5035 is connected to the other end of the second rheostat R2 and one end of the first rheostat R1, respectively, and the chip MA The six pins of X5035, the other end of the first rheostat R1, and the other end of the fourth capacitor C4 are all grounded. An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 7.

10. The electromagnetic induction energy harvesting device (10) is fixed to the power transmission line (101) by a fixing unit (102), and the analysis and control unit (20) is The electromagnetic induction energy harvesting device (10) is configured to acquire a first electromagnetic induction electromotive force by controlling the processor unit (701) in the electromagnetic induction energy harvesting device (10) to transmit an expansion / contraction control signal to the expansion / contraction unit (1), thereby controlling the expansion / contraction unit (1) to move in or out of the magnetic core unit (201) into the first coil subunit (5) based on the expansion / contraction control signal, and the first electromagnetic induction electromotive force is acquired based on the electromagnetic induction energy harvesting device (10) fixed to the power transmission conductor (101). The expression for the first electromagnetic induction electromotive force is as follows: [Math 3] V １ This is the first electromagnetic induction electromotive force, and N １ μ is the number of coil turns of the first coil subunit (5), １ This is the magnetic permeability of the first magnetic core subunit (3), and S １ ω is the equivalent cross-sectional area of ​​the first coil subunit (5), ω is the angular velocity, and i ｙ１ L is the effective current value of the first coil subunit (5), １ This is the magnetic path length of the first coil magnetic core, An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 8.

11. The analysis and control unit (20) is The electromagnetic induction energy harvesting device (10) is controlled to adaptively perform voltage compensation processing based on the first electromagnetic induction electromotive force, thereby controlling the intrusion or retraction of the magnetic core unit (201) into the coil unit (501) based on the first electromagnetic induction electromotive force, and is configured to obtain a second electromagnetic induction electromotive force. The electromagnetic induction energy harvesting device (10) is controlled to perform voltage compensation processing adaptively based on the first electromagnetic induction electromotive force by controlling the processor unit (701) in the electromagnetic induction energy harvesting device (10) to determine a second coil insertion control signal or a second coil retraction control signal based on the coil voltage signal, and to transmit the second coil insertion control signal or the second coil retraction control signal to the expandable unit (1), thereby controlling the expansionable unit (1) to insert or retract into the second coil subunit (7) based on the second coil insertion control signal or the second coil retraction control signal, and adaptively adjusting to obtain the second electromagnetic induction electromotive force. The expression for the second electromagnetic induction electromotive force is as follows: [Math 4] V ２ This is the second electromagnetic induction electromotive force, and N ２ μ is the number of coil turns of the second coil subunit (7), ２ This is the magnetic permeability of the second magnetic core subunit (2), and S ２ ω is the equivalent cross-sectional area of ​​the second coil subunit (7), ω is the angular velocity, and i ｙ ２ L is the effective current value of the second coil subunit (7), ２ This is the magnetic path length of the second coil magnetic core. An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 8.

12. The analysis and control unit (20) is Upon determining that the first electromagnetic induction electromotive force is greater than or equal to the operating electromagnetic induction electromotive force, smoothing rectification and voltage conversion are performed on the first electromagnetic induction electromotive force to obtain the electromagnetic induction output voltage. Upon receiving that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, and the second electromagnetic induction electromotive force is larger than or equal to the operating electromagnetic induction electromotive force, the first coil subunit (5) is shut off, smoothing rectification and voltage conversion are performed on the second electromagnetic induction electromotive force to obtain the electromagnetic induction output voltage. In response to the fact that the first electromagnetic induction electromotive force is smaller than the operating electromagnetic induction electromotive force, and the second electromagnetic induction electromotive force is also smaller than the operating electromagnetic induction electromotive force, the system is configured to obtain the electromagnetic induction output voltage by performing smoothing, rectification, and voltage conversion on the sum of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force, thereby performing smoothing, rectification, and voltage conversion on at least one of the first electromagnetic induction electromotive force and the second electromagnetic induction electromotive force. An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 8.

13. The analysis and control unit (20) is A voltage comparison was performed between the electromagnetic induction output voltage and the threshold voltage, and the expression for the threshold voltage is as follows: [Math 5] V ｍ R is the threshold voltage, １ R is the resistance value of the first rheostat R1 in the voltage conversion unit (601), ２ V is the resistance value of the second rheostat R2 in the voltage conversion unit (601), ｏｕｔ This is a pre-set output voltage value, The system is configured to select whether to supply power or charge based on the voltage comparison result, and to select whether to perform power supply processing or charging processing for electrical equipment based on the electromagnetic induction output voltage. The selection of whether to supply power or charge based on the voltage comparison results mentioned above is, Upon finding that the electromagnetic induction output voltage is lower than the threshold voltage, at least one of the following is performed: charging the electrical energy storage unit and supplying power to the electrical equipment using the electrical energy storage unit. The process includes, upon receiving that the electromagnetic induction output voltage is greater than or equal to the threshold voltage, performing power supply processing for electrical equipment, An electromagnetic induction energy harvesting system by adaptive control of power transmission conductors as described in claim 9.

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