A method, apparatus, and device for controlling an induction coil.

Abstract

This specification provides an embodiment of a method, apparatus, and device for controlling an induction coil. The scheme includes: acquiring an induction signal from an induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; based on the induction signal, determining whether the induction coil meets the communication requirements for short-range communication; if the induction coil does not meet the communication requirements for short-range communication, adjusting the state of at least one short-circuit element of the induction coil so that the induction coil meets the communication requirements for short-range communication.

Description

Technical Field

[0001] This specification relates to one or more embodiments in the field of short-range communication technology, and particularly to a method for controlling an induction coil. This specification also relates to an induction coil, a short-range communication carrier, an induction coil control device, a computing device, a computer-readable storage medium, and a computer program product. Background Technology

[0002] With the continuous development of short-range communication technology, more and more terminal devices can communicate with each other through this technology. Each terminal device capable of short-range communication can be equipped with a communication coil. However, during use, changes in the environment can cause interference or distortion to the coil. For example, different card sizes and placement positions, changes in the relative posture of the terminal and the card, additional losses introduced by film or metal accessories, and changes in the surrounding environment of wearable devices under different wearing conditions can all cause changes in the near-field magnetic field generated by the coil.

[0003] Therefore, how to provide a method that can promote the stability of short-range communication is an urgent technical problem to be solved. Summary of the Invention

[0004] In view of this, one or more embodiments of this specification provide a method, apparatus, and device for controlling an induction coil to promote the stability of short-range communication.

[0005] According to a first aspect of one or more embodiments of this specification, a method for controlling an induction coil is provided, comprising: Acquire the induced signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; Based on the sensed signal, determine whether the sensed coil meets the communication requirements for short-range communication; If the induction coil does not meet the communication requirements for short-range communication, the state of at least one short-circuit element of the induction coil is adjusted so that the induction coil meets the communication requirements for short-range communication.

[0006] According to a second aspect of one or more embodiments of this specification, an induction coil is provided, including a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body.

[0007] According to a third aspect of one or more embodiments of this specification, a short-range communication carrier is provided, including the induction coil or steps for performing a control method for the induction coil.

[0008] According to a fourth aspect of one or more embodiments of this specification, an induction coil control device is provided, comprising: A signal acquisition module is used to acquire the induced signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; The communication requirement judgment module is used to determine whether the induction coil meets the communication requirements for short-range communication based on the induction signal. A state adjustment module is used to adjust the state of at least one short-circuit element of the induction coil so that the induction coil meets the communication requirements for short-range communication if the induction coil does not meet the communication requirements for short-range communication.

[0009] According to a fifth aspect of one or more embodiments of this specification, a computing device is provided, including a memory, a processor, and computer instructions stored in the memory and executable on the processor, wherein the processor, when executing the computer instructions, implements the steps of the control method for the induction coil.

[0010] According to a sixth aspect of one or more embodiments of this specification, a computer-readable storage medium is provided that stores computer instructions, which, when executed by a processor, implement the steps of the control method for the induction coil.

[0011] According to a seventh aspect of the embodiments of this specification, a computer program product is provided, including a computer program / instructions that, when executed by a processor, implement the steps of the above-described control method for the induction coil.

[0012] At least one embodiment of this specification can achieve the following beneficial effects: by acquiring the induction signal of an induction coil, wherein the induction coil may include a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; based on the induction signal, if it is determined that the induction coil does not meet the communication requirements for short-range communication, the state of at least one short-circuit element in the induction coil can be adjusted so that the induction coil meets the communication requirements for short-range communication. On the one hand, by using a fractal coil, the magnetic field generated by the coil can be made more uniform, reducing the depth and number of local weak field points, reducing communication blind spots and improving communication stability, enabling users to complete short-range communication from multiple angles or directions. On the other hand, if it is determined by the induction signal of the induction coil that the induction coil does not meet the requirements for short-range communication, the state of at least one short-circuit element in the induction coil can be adjusted to reduce the interference area of ​​the fractal coil or expand the magnetic field area of ​​the fractal coil, so that the induction coil meets the communication requirements for short-range communication, enabling the induction coil to work normally and complete short-range communication with other devices. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic flowchart illustrating an embodiment of an induction coil control method provided in this specification. Figure 2 This is a schematic diagram of an induction coil provided in one embodiment of this specification; Figure 3 This is a schematic diagram of the magnetic field strength distribution of a conventional coil and an induction coil provided in one embodiment of this specification; Figure 4 This is a schematic diagram of the magnetic field distribution of a third-order Hilbert induction coil provided in one embodiment of this specification; Figure 5 This is a schematic diagram of the magnetic field distribution of a curved fractal coil provided in one embodiment of this specification; Figure 6 This is a schematic diagram of a control link for an induction coil provided in one embodiment of this specification; Figure 7 This specification provides an embodiment corresponding to... Figure 1 A schematic diagram of the structure of a control device for an induction coil; Figure 8 This is a structural block diagram of a computing device provided in one embodiment of this specification. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0016] This specification uses specific terms to describe embodiments thereof. Terms such as "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of those different embodiments or examples, without contradiction.

[0017] The terminology used in one or more embodiments of this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of this specification. The singular forms “a,” “an,” “an,” “the,” and “the” as used in one or more embodiments of this specification and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in one or more embodiments of this specification includes any or all possible combinations of one or more associated listed items.

[0018] The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, product, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, product, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in the process, method, product, or apparatus that includes said elements is not excluded.

[0019] Although the terms "first," "second," etc., may be used to describe various information in one or more embodiments of this specification, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, "first" may also be referred to as "second," and similarly, "second" may also be referred to as "first," without departing from the scope of one or more embodiments of this specification. Ordinal numbers such as "first," "second," etc., do not necessarily indicate order; often they are used to facilitate the distinction of objects. For example, "first server" and "second server" usually refer to two servers. To distinguish these two servers, they are described as "first server" and "second server." Of course, sometimes these two servers may be the same server.

[0020] Depending on the context, the word "if" as used here can be interpreted as "when," "when," or "in response to determination."

[0021] In this specification, unless explicitly stated otherwise, "receiving and sending data" does not necessarily mean direct receiving and sending; it can also mean indirect receiving and sending. For example, A receiving data sent by B can be understood as A directly receiving the data sent by B, or it can be understood as A indirectly receiving the data sent by B through other entities such as C. Similarly, B sending data to A can be understood as B sending the data directly to A, or it can be understood as B indirectly sending the data to A through other entities such as C. Here, C can be one entity, or it can be two or more entities.

[0022] In this specification, unless explicitly stated otherwise, the relationships between structures can be direct or indirect. For example, when describing "A is connected to B," unless it is explicitly stated that A and B are directly connected, it should be understood that A can be directly connected to B or indirectly connected to B. Similarly, when describing "A is on top of B," unless it is explicitly stated that A is directly above B (AB is adjacent and A is above B), it should be understood that A can be directly above B or indirectly above B (AB is separated by other elements, and A is above B). And so on.

[0023] The user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in one or more embodiments of this specification are all information and data authorized by the user or fully authorized by all parties. The collection, use and processing of related data shall comply with the relevant laws, regulations and standards of the relevant regions, and corresponding operation entry points shall be provided for users to choose to authorize or refuse.

[0024] The following explains the terms and concepts used in one or more embodiments of this specification.

[0025] Fractal coils: These can represent inductor or coil structures designed using fractal geometry. Fractal coils are self-similar; the entire coil can be divided into multiple parts, and each part can be similar to the overall structure.

[0026] Near Field Communication (NFC) is an ultra-short-range, low-power, and secure short-range wireless communication technology. It has three operating modes: reader, card emulation, and peer-to-peer.

[0027] Radio Frequency Identification (RFID) is a technology that uses radio waves to automatically identify objects, people, or tags.

[0028] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0029] Figure 1 This is a flowchart illustrating a method for controlling an induction coil, as provided in an embodiment of this specification.

[0030] From a programmatic perspective, the executor of the process can be a program mounted on a terminal device or control unit equipped with an induction coil. From a hardware perspective, the executor can be a terminal device equipped with an induction coil or a control unit within the terminal device used to regulate the induction coil. It is understood that this method can be executed by any device, equipment, platform, or cluster of devices with computing and processing capabilities. For example, the executor can be a slave device in near-field communication, also known as a tag device, passive device, etc.

[0031] like Figure 1 As shown, the process may include the following steps: Step 102: Obtain the induction signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body.

[0032] In the embodiments of this specification, the induction coil can be an electronic component that generates current or voltage through the principle of electromagnetic induction, and is typically made of conductive material. The induced signal can represent the electrical signal generated in the induction coil due to changes in the magnetic field, and can be in the form of voltage or current. The induction coil can be part of a slave device; specifically, it can serve as a communication antenna in the slave device for communication with a master device, which can be a card reader device. For example, during communication with the master device, the slave device can send tag data to the master device via the induction coil. Alternatively, the induction coil can also serve as an auxiliary antenna in the slave device. For instance, the slave device may have a communication antenna for communication with the master device, and the induction coil can be arranged as an auxiliary antenna in the slave device to assist the communication antenna and promote the stability of communication between the communication antenna and the master device.

[0033] The fractal coil body can be the main body of a coil designed with fractal geometry. Fractal structures possess characteristics such as self-similarity and infinite nesting. Short-circuit elements can be components used to achieve local short circuits in the induction coil; they can be made of metal sheets, wires, or other conductive materials, and their function is to alter the electrical characteristics of the coil. Self-similar regions can represent sub-regions within the coil that have the same geometry and / or electrical characteristics. These regions repeat in the fractal structure, forming a hierarchical structure.

[0034] In the embodiments described in this specification, the short-circuit element can be installed at the input or output terminal of the self-similar region. Each self-similar region in the induction coil has a corresponding short-circuit element, or some self-similar regions in the induction coil have a corresponding short-circuit element. The short-circuit element can be controlled by a switch to determine whether it is connected to the circuit. The induced signal can be obtained by measuring the voltage or current across the coil using a high-precision voltmeter, oscilloscope, or ADC acquisition module. The terminal device or evaluation system can record induced signal data at different frequencies or time points.

[0035] Step 104: Based on the induction signal, determine whether the induction coil meets the communication requirements for short-range communication.

[0036] In the embodiments of this specification, short-range communication can refer to wireless communication methods with an operating range between a few centimeters and tens of meters, such as at least one of NFC, Bluetooth, RFID, and ZigBee. Communication requirements can refer to the requirements of short-range communication on the sensing signal in a specific scenario. In practical applications, communication requirements also include requirements for performance indicators such as data transmission efficiency, signal-to-noise ratio, and response time.

[0037] In practical applications, multiple devices with short-range communication capabilities may be placed near the induction coil. For example, at a checkout counter, there may be an auxiliary payment device used as a tag reader, and also a POS machine used as a card reader. Alternatively, multiple POS machines may be placed on the checkout counter. When these devices are close together, interference signals can exist, easily affecting the normal business processing of the induction coil. To reduce or avoid the impact of interference signals on the induction coil's communication, in one or more embodiments of this specification, optionally, the induction signal is an interference signal. The step of determining whether the induction coil meets the short-range communication requirements based on the induction signal may specifically include: Determine whether the intensity of the sensed signal is greater than or equal to a preset intensity; Determine whether the duration of the sensed signal is greater than or equal to a first preset duration; If the intensity of the induction signal is greater than or equal to a preset intensity and the duration is greater than or equal to a first preset duration, then at least one short-circuit element in the induction coil is short-circuited.

[0038] In one embodiment of this specification, the preset intensity may be determined based on expert experience or based on the communication requirements of short-range communication. The first preset duration may be determined based on expert experience or based on the communication requirements of short-range communication.

[0039] In one embodiment of this specification, the sensing signal can be acquired based on a preset sampling period; the preset sampling period can be set based on user requirements. The terminal device can pre-determine whether the intensity of the acquired sensing signal is greater than or equal to a preset intensity; if it is determined that the intensity of the sensing signal is greater than or equal to the preset intensity, it can continuously monitor the intensity of the sensing signal and determine whether the duration for which the intensity of the sensing signal is greater than or equal to the preset intensity is not less than a first preset duration.

[0040] In one embodiment of this specification, if the strength of the induced signal is greater than or equal to a preset strength and the duration is not less than a first preset duration, it indicates the presence of an interference signal that can affect the normal communication of the induction coil. The interference signal can represent an external signal emitted by a non-target communication source that may affect normal communication, such as electromagnetic noise, POS machine signals, environmental reflection signals, etc. The terminal device can determine whether the induced signal is an interference signal based on its characteristics, such as whether the induced signal fluctuates irregularly or has high-frequency sudden jitter. If the induced signal is an interference signal, it can be determined that an interference source exists around the induction coil. Furthermore, the short-circuit elements in the induction coil can be traversed to determine the target short-circuit element corresponding to the self-similar region affected by the interference source. This target short-circuit element is then short-circuited to reduce the current flow in the self-similar region affected by the interference source, thereby reducing the electromagnetic intensity of the self-similar region affected by the interference source and reducing the impact on normal short-range communication, allowing the induction coil to perform normal short-range communication. By actively identifying and suppressing interference signals, the stability of the communication system is enhanced, further improving the communication success rate, while also maintaining effective communication in interference environments and reducing the communication failure rate.

[0041] For example, if the sensed signal does not contain a preamble that conforms to the protocol, the sensed signal can be determined to be an interference signal; or, if the sensed signal has a large signal strength and a low signal-to-noise ratio, the sensed signal can be determined to be an interference signal; or, if the signal bandwidth of the sensed signal does not meet the protocol requirements, the sensed signal can be determined to be an interference signal; or, if the command format of the sensed signal is incorrect, the sensed signal can be determined to be an interference signal; or, if the proportion of invalid frames contained in the sensed signal received per unit time exceeds a preset proportion, the sensed signal can be determined to be an interference signal.

[0042] In one embodiment of this specification, if the sensed signal is an interference signal, and the strength of the sensed signal is greater than or equal to a preset strength, and the duration is not less than a first preset duration, it can be determined that the induction coil is currently in an interference state or an abnormal coupling state, and at least one short-circuit element can be short-circuited. If the sensed signal is an interference signal, and the strength of the sensed signal is less than a preset strength, it can be determined that the degree of interference to the induction coil is low and will not affect short-range communication, so there is no need to process the short-circuit element, and it can be used normally. If the sensed signal is an interference signal, and the strength of the sensed signal is less than a preset strength, and the duration decreases to less than a preset strength or even disappears before the first preset duration, the induction coil can be used normally for short-range communication. Thus, it is possible to determine whether the induction coil is interfered with and whether the induction coil needs to be adjusted by multiple dimensions such as the strength and duration of the sensed signal, improving the adjustment accuracy and avoiding resource loss caused by blind adjustment.

[0043] In practical applications, due to factors such as aging of the induction coil, environmental influences, or business requirements, it may be necessary to increase the signal strength or the sensing area. This can be achieved by adjusting the state of the short-circuit element to increase the magnetic field area of ​​the induction coil, thereby increasing the sensing area and simultaneously improving the signal strength of the induced signal. In one or more embodiments of this specification, optionally, the induced signal is a communication signal, and determining whether the induction coil meets the communication requirements for short-range communication based on the induced signal may specifically include: Determine whether the strength of the sensed signal is less than a preset communication strength; Determine whether the duration of the sensed signal is greater than or equal to a second preset duration; If the strength of the sensed signal is less than the preset communication strength and the duration is greater than or equal to the second preset duration, then at least one short-circuit element in the sensed coil will be disconnected.

[0044] In one embodiment of this specification, the preset communication strength can be determined based on the normal communication signal strength for short-range communication; the preset communication strength can be greater than or equal to the normal communication signal strength. The second preset duration can be determined based on expert experience or based on communication requirements. The communication signal can be a signal emitted by a communication device capable of normal short-range communication, and the communication device can include devices such as smartphones and smart wearable devices capable of normal short-range communication.

[0045] For example, it is determined whether the center frequency of the sensed signal is within the tolerance range specified in the protocol. If the center frequency is within the tolerance range, it is determined whether a preamble conforming to the protocol is detected in the sensed signal. If a preamble conforming to the protocol is detected in the sensed signal, it is determined whether the Cyclic Redundancy Check (CRC) of the sensed signal passes. If the CRC of the sensed signal passes, it is determined whether the address or command contained in the sensed signal is valid. If the address or command contained in the sensed signal is valid, it can be determined that the sensed signal is a normal communication signal. In practical applications, the above determinations can be executed in parallel or in other executable orders. If any of the above determination conditions are not met, the sensed signal can be determined to be an interference signal.

[0046] In one embodiment of this specification, the terminal device can determine whether the strength of the sensed signal is less than a preset communication strength. After determining that the strength of the sensed signal is less than the preset communication strength, it can determine whether the duration of the sensed signal being less than the preset communication strength is greater than or equal to a second preset duration.

[0047] In one embodiment of this specification, if the induced signal is a non-interference signal but a communication signal used for short-range communication, it can be determined that the strength of the induced signal is less than a preset communication strength and the duration is greater than or equal to a second preset duration. Therefore, it can be determined that the induced signal of the induction coil does not meet the communication requirements for normal short-range communication. Further, the short-circuited elements in a short-circuited state can be traversed to identify at least one short-circuited element affecting the communication requirements of the induction coil for short-range communication. The state of at least one short-circuited element can be adjusted to an open state, allowing current to pass through the self-similar region corresponding to the at least one short-circuited element, thereby increasing the induced signal strength in each self-similar region of the induction coil and the communication range of the induction coil. If the induced signal is a non-interference signal and the strength of the induced signal is greater than or equal to the preset communication strength, it can be determined that the induction coil is in a normal communication state and no adjustment is required. Thus, it is possible to determine whether to adjust the short-circuited elements of the induction coil based on the preset communication strength and the second preset duration, thereby improving the accuracy of controlling the induction coil.

[0048] In practical applications, when the terminal device senses that another device capable of interacting with the induction coil is approaching, it can judge the sensing signal generated by the induction coil so that the induction coil can meet the short-range communication requirements and complete short-range communication interaction with other devices, while also avoiding the waste of resources caused by continuously judging the sensing signal.

[0049] Step 106: If the induction coil does not meet the communication requirements for short-range communication, adjust the state of at least one short-circuit element of the induction coil so that the induction coil meets the communication requirements for short-range communication.

[0050] In the embodiments of this specification, the state of a short-circuited element may include an on state or an off state. When it is determined that the induction coil does not meet the communication requirements for short-range communication, the terminal device may send a command to a designated short-circuited element, causing the designated short-circuited element to change its state based on the received command, for example, switching from an on state to an off state, or from an off state to an on state, so that the induction coil can meet the communication requirements for short-range communication and complete short-range communication. The designated short-circuited element can be a short-circuited element that can affect the communication state of the induction coil. The terminal device can traverse all short-circuited elements in the induction coil to determine the designated short-circuited element.

[0051] In the embodiments of this specification, if the induction coil meets the communication requirements for short-range communication, then there is no need to adjust the state of the short-circuit element in the induction coil, and the induction coil can be used for normal short-range communication.

[0052] While one or more embodiments of this specification provide method steps as described in the embodiments or flowcharts, it is understood that the order of steps listed in the embodiments or flowcharts is merely one possible execution order among many steps and does not represent the only possible execution order. The order of some steps may be adjusted according to actual needs, or some steps may be omitted. When the claims involve method steps, changes in the order of such steps, or parallel execution between steps, are also within the scope of protection of the claims.

[0053] Figure 1 The method described herein involves acquiring the induced signal of an induction coil, which may include a fractal coil body and several short-circuit elements connected to the fractal coil body. These short-circuit elements short-circuit at least one self-similar region within the coil body. Based on the induced signal, if it is determined that the induction coil does not meet the communication requirements for short-range communication, the state of at least one short-circuit element in the induction coil can be adjusted to enable the induction coil to meet these requirements. On one hand, by using a fractal coil, the magnetic field generated by the coil becomes more uniform, reducing the depth and number of local weak field points, decreasing communication blind spots, and improving communication stability, allowing users to complete short-range communication from multiple angles or directions. On the other hand, if the induced signal of the induction coil determines that it does not meet the short-range communication requirements, the state of at least one short-circuit element in the induction coil can be adjusted to reduce the interference area of ​​the fractal coil or expand the magnetic field area of ​​the fractal coil, thereby enabling the induction coil to meet the communication requirements for short-range communication and to function normally, completing short-range communication with other devices.

[0054] based on Figure 1 In addition to the method described herein, this specification also provides some improved implementation methods, which will be described below.

[0055] Optionally, in one or more embodiments of this specification, adjusting the state of at least one short-circuit element of the induction coil may specifically include: Based on the sensing signals of the induction coils of each short-circuit element under different states, the target short-circuit element that needs to be adjusted is determined. Adjust the state of the target short-circuit element.

[0056] In one embodiment of this specification, the target short-circuit element can be a designated short-circuit element that is the object of adjustment. After determining that the induction coil does not meet the communication requirements for short-range communication, the terminal device sequentially switches the states of some or all of the short-circuit elements in the induction coil, recording the induction signal after each switch; it constructs a correspondence table between each short-circuit element and the induction signal after the short-circuit element switch, and can determine the target short-circuit element based on at least one of the signal change amplitude, trend, or communication requirement threshold, and adjust the state of the target short-circuit element. For example, if the original state of the short-circuit element is a short-circuit state, it can be adjusted to an open state; if the original state of the short-circuit element is an open state, it can be adjusted to a short-circuit state. Thus, by analyzing the induction signal of the induction coil after adjusting the state of the short-circuit element, the target short-circuit element that affects the induction coil can be identified, and adjustments can be made to the target short-circuit element so that the induction coil after adjusting the state of the target short-circuit element can meet the communication requirements for short-range communication, improving the stability of the induction coil in different scenarios.

[0057] Optionally, in one or more embodiments of this specification, determining the target short-circuit element to be adjusted based on the sensing signals of the induction coils of each of the short-circuit elements in different states may specifically include: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Calculate the intensity difference between the candidate induction signal and the induction signal to obtain the intensity difference corresponding to any short-circuit element; Based on the strength difference corresponding to each short-circuit element, the short-circuit element with the largest strength difference is determined as the target short-circuit element.

[0058] In one embodiment of this specification, the intensity difference can represent the envelope voltage difference between the candidate induction signal and the induction signal. The intensity difference can be a value not less than zero. Switching the state of any short-circuit element can specifically mean keeping the default states of all short-circuit elements in the induction coil except for any short-circuit element, and only switching the state of any short-circuit element. If the state of any short-circuit element is open, the state of any short-circuit element can be switched to short-circuit state; or, if the state of any short-circuit element is short-circuit state, the state of any short-circuit element can be switched to open state. After switching the state of any short-circuit element, the induction signal of the induction coil can be re-acquired as the candidate induction signal corresponding to any short-circuit element, and the state of any short-circuit element can be restored to the default state. Then, the state of the next short-circuit element is switched, and the candidate induction signal corresponding to the next short-circuit element is acquired. The terminal device can process each short-circuit element in the induction coil in the above manner to obtain the candidate induction signal corresponding to each short-circuit element.

[0059] In one embodiment of this specification, the target short-circuit element can be the short-circuit element that causes the greatest decrease in the intensity of the induction signal of the induction coil after the state is switched; alternatively, the target short-circuit element can also be the short-circuit element that causes the greatest increase in the intensity of the induction signal of the induction coil after the state is switched. The terminal device can use the induction signal of the induction coil when no adjustment is made to the state of any short-circuit element as a reference value, and calculate the intensity difference between each candidate induction signal and the reference value; the short-circuit element with the largest intensity difference can be the short-circuit element that has the greatest impact on the induction coil, and the short-circuit element with the largest intensity difference can be used as the target short-circuit element to adjust the state of the target short-circuit element so that the induction coil can perform short-range communication normally.

[0060] Alternatively, in another implementation, switching the state of any short-circuit element among the various short-circuit elements to obtain the adjusted induction coil corresponding to the short-circuit element may specifically include: If the sensed signal is an interference signal, then the disconnected short-circuit element in the disconnected state among the short-circuit elements is obtained. For any one of the disconnecting and short-circuiting elements, short-circuit that one disconnecting and short-circuiting element to obtain the adjusted induction coil; or, If the sensed signal is a non-interference signal, then the short-circuited short-circuited element in the short-circuited state among the short-circuited elements is obtained. For any one of the short-circuit elements, disconnect that short-circuit element to obtain the adjusted induction coil.

[0061] In one embodiment of this specification, if the induced signal is an interference signal, it can be determined that the induction coil is in an interference state. The interfered area of ​​the induction coil needs to be shielded to avoid affecting normal short-range communication in other areas. Shielding the interfered area requires short-circuiting the short-circuiting element controlling that area to reduce the current flowing through it, thereby reducing the magnetic field strength and preventing interference from the source, thus ensuring the induction coil's short-range communication is not affected.

[0062] In one embodiment of this specification, if the induced signal is an interference signal, the candidate induced signal corresponding to each disconnected short-circuit element can be determined by traversing each disconnected short-circuit element in the open state and sequentially switching the state of each disconnected short-circuit element, thereby determining the intensity difference. The area with the largest intensity difference can be the partition through which the interference energy mainly passes, thereby determining the incident direction of the interference and shielding the area interfered with by the interference signal.

[0063] In one embodiment of this specification, if the induced signal is a non-interference signal, it can be determined that the magnetic field strength of the induction coil is low and cannot communicate normally with other devices near the induction coil. In this case, the sensing range of the induction coil can be expanded and the magnetic field strength of the induction coil can be increased so that the induction coil can communicate normally with other devices through the adjusted induced signal.

[0064] In one embodiment of this specification, if the induced signal is a non-interference signal, the candidate induced signal corresponding to each short-circuit element can be determined by traversing each short-circuit element in a short-circuit state and sequentially switching the state of each short-circuit element. The intensity difference can then be determined, and the area with the largest intensity difference can be the target area where the induced signal is weakest. This allows the short-circuit element to be disconnected, enabling the current to pass through the target area where the induced signal is weakest, thereby strengthening the induced signal in the target area and further enabling the induced signal in the target area to meet the communication requirements of short-range communication.

[0065] Optionally, in one or more embodiments of this specification, determining the target short-circuit element to be adjusted based on the sensing signals of the induction coils of each of the short-circuit elements in different states specifically includes: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate induction signal, the short-circuit element used to obtain the target adjusted induction coil is determined as the target short-circuit element; the target adjusted induction coil is the adjusted induction coil whose signal strength of the candidate induction signal is less than a preset strength.

[0066] In one embodiment of this specification, if the induced signal is an interference signal, the self-similar region corresponding to the target short-circuit element whose intensity is less than a preset intensity can be determined as the interference region affected by the interference. The target short-circuit element can then be adjusted to shield the interference region, preventing the interference signal from coupling with the communication signal of the induction coil, thus preventing the induction coil from communicating normally. Adjusting the target short-circuit element can be done by short-circuiting the target short-circuit element, allowing less current to flow through the interference region corresponding to the short-circuit element, reducing the probability of communication with other devices that do not support short-range communication, and reducing the generation of interference signals.

[0067] Optionally, in one or more embodiments of this specification, determining the short-circuit element used to obtain the target adjusted induction coil as the target short-circuit element specifically includes: The candidate short-circuit elements are selected as the target short-circuit elements by sorting the candidate induction signals in ascending order of signal strength, and the candidate short-circuit elements corresponding to the first preset number of candidate induction signals are selected as the target short-circuit elements.

[0068] In one embodiment of this specification, the preset quantity can be determined based on communication requirements; alternatively, the preset quantity can be determined based on the signal strength of the induction signal. The candidate short-circuit element corresponding to the candidate induction signal indicates that the candidate induction signal of the induction coil was acquired under the condition of adjusting the candidate short-circuit element, and there is a correspondence between the candidate induction signal and the candidate short-circuit element. The terminal device can sort the short-circuit elements in ascending order based on the signal strength of each candidate induction signal, and determine the preset number of short-circuit elements at the top of the list as the target short-circuit element; or, it can sort the short-circuit elements in descending order based on the signal strength of each candidate induction signal, and determine the preset number of short-circuit elements at the bottom of the list as the target short-circuit element. The self-similar region corresponding to the target short-circuit element can be an interference region that is significantly affected by the interference source. Then, the state of the preset number of target short-circuit elements is adjusted to a short-circuit state, thereby shielding multiple interference regions, so that the induction coil is no longer interfered with by the interference source and can communicate normally.

[0069] Optionally, in one or more embodiments of this specification, determining the target short-circuit element to be adjusted based on the sensing signals of the induction coils of each of the short-circuit elements in different states specifically includes: Each of the short-circuit elements is divided into multiple short-circuit element combinations; each of the short-circuit element combinations contains at least two short-circuit elements; For any short-circuit element combination in each of the short-circuit element combinations, switch the state of each short-circuit element in the short-circuit element combination to obtain the adjusted induction coil corresponding to the short-circuit element combination. Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate sensing signals, the target short-circuit element combination that needs to be adjusted is determined; Adjusting the state of the target short-circuit element includes: Adjust the state of each target short-circuit element in the target short-circuit element combination.

[0070] In one embodiment of this specification, short-circuit element combinations can be based on the synergistic relationships between short-circuit elements, such as combining short-circuit elements based on spatial adjacency, ensuring that each combination contains at least two short-circuit elements; short-circuit element combinations can also be generated through machine learning clustering. Alternatively, they can be combined based on electrical topology associations. Different combinations of short-circuit elements may contain partially identical short-circuit elements; or they may contain completely different short-circuit elements. Different combinations of short-circuit elements may contain the same number of short-circuit elements; or they may contain different numbers of short-circuit elements.

[0071] In one embodiment of this specification, the terminal device can divide multiple short-circuit elements according to the spatial layout of the induction coil to obtain multiple short-circuit element combinations; traverse the multiple short-circuit element combinations in a similar manner to the above-described traversal of short-circuit elements to obtain candidate induction signals corresponding to each short-circuit element combination; filter target short-circuit element combinations using the candidate induction signals; one or more self-similar regions corresponding to the target short-circuit element combination are interference regions affected by the interference source. Traversing the short-circuit element combinations can involve switching the state of all short-circuit elements in any short-circuit element combination and collecting candidate induction signals of the induction coil after the switching of any short-circuit element combination; restoring all short-circuit elements in any short-circuit element combination to the default state; switching the state of all short-circuit elements in the next short-circuit element combination and collecting the corresponding candidate induction signals, until the state switching of all short-circuit element combinations and the collection of corresponding candidate induction signals are completed.

[0072] Optionally, in one embodiment of this specification, the step of dividing the individual short-circuit elements into multiple short-circuit element combinations may further include: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Based on the candidate induction signal of the adjusted induction coil, the target short-circuit element is determined; Adjust the state of the target short-circuit element to obtain the target induction coil; Determine whether the intensity of the induced signal from the target induction coil is less than a preset intensity; The step of dividing each of the short-circuit elements into multiple short-circuit element combinations includes: If the intensity of the induced signal of the target induction coil is greater than or equal to the preset intensity, then each short-circuit element is divided into multiple short-circuit element combinations.

[0073] In one embodiment of this specification, the terminal device can first traverse the short-circuited elements one by one, find the target short-circuited element, and adjust the state of the target short-circuited element. If the induction coil still does not meet the communication requirements for short-range communication after the state of the target short-circuited element is adjusted, a combination of short-circuited elements can be generated, the combination of short-circuited elements can be traversed, the target short-circuited element combination can be determined, and the state of each short-circuited element in the target short-circuited element combination can be adjusted so that the induction coil can communicate normally without being interfered with by interference sources.

[0074] In practical applications, after the induction coil is regulated, the cause and result of the regulation can be reported to the terminal device so that the terminal device can generate corresponding log information. Specifically, if the target signal strength of the induction coil is less than the preset signal strength after adjusting the state of the target short-circuit element, the abnormal event and regulation result are sent to the device control unit. The abnormal event indicates that the induction coil does not meet the communication requirements for short-range communication. The regulation result includes at least the target signal strength obtained after adjusting the conduction state of the target short-circuit element and the target short-circuit element itself.

[0075] In practical applications, short-circuit components can be divided according to a preset combination method to obtain multiple short-circuit component combinations. The preset combination method may include at least one of the following: electrical structure topology combination method, spatially adjacent combination method, machine learning-based combination method, and statistical method-based combination method.

[0076] Among them, the electrical structure topology combination method can represent the grouping based on circuit theory and electromagnetic field simulation, as well as the electrical connection relationship of short-circuit elements in the circuit; the connection relationship can include at least one of multiple relationships such as series, parallel and ground position, for example, according to the symmetry of the coil, short-circuit elements in symmetrical positions are grouped together; or short-circuit elements in asymmetrical positions are grouped together.

[0077] Among them, the spatially adjacent combination method can represent a way of determining short-circuit elements that are physically close and strongly coupled as a group based on geographical proximity and expert experience. For example, adjacent short-circuit elements with a distance of less than wavelength λ / 10 are grouped into one group; or, if two short-circuit elements are too close together and have strong mutual coupling, they are grouped into one group based on expert experience.

[0078] One approach, based on machine learning, involves using a pre-trained machine model to combine short-circuit components. The machine model can be a database built from pre-collected data, trained on that database. The pre-collected data can be datasets generated through extensive electromagnetic simulations or field measurements, containing multiple training datasets. Each training dataset can include the state vector and performance indicators of each short-circuit component. The state vector represents the state of the short-circuit component, such as short-circuited or open; the performance indicators can include resonant frequency, signal reading distance, and reflection coefficient.

[0079] Among them, the combination method based on statistical methods can be to determine which components have a significant impact on system performance by analyzing the sensitivity and correlation of short-circuit component parameters, and then group them accordingly. For example, short-circuit components with high sensitivity can be grouped together, and components with low sensitivity can be grouped together; or, the Pearson correlation coefficient between short-circuit components can be calculated to determine the correlation between short-circuit components, and short-circuit components with high correlation can be grouped together.

[0080] In one or more embodiments of this specification, the method may optionally further include: Obtain the target sensing signal of the induction coil after the state of the at least one short-circuit element has been adjusted; If the duration for which the intensity of the target sensing signal is less than the preset intensity is greater than or equal to a third preset duration, then the at least one short-circuit element is reset to its state before adjustment.

[0081] In one embodiment of this specification, the third preset duration can be determined based on the communication duration of short-range communication. The third preset duration can be greater than the communication duration of short-range communication; for example, if the communication duration of short-range communication is 1 second, then the third preset duration can be 1.5 seconds, 2 seconds, etc. When the duration for which the intensity of the target sensing signal is less than the preset intensity is greater than or equal to the third preset duration, it can be determined that the induction coil has completed short-range communication with other devices. The short-circuit element of the induction coil can then be reset, thereby enabling the induction coil to return to its original state through this back-off mechanism.

[0082] The various technical features in the above embodiments can be combined arbitrarily, as long as there is no conflict or contradiction between the combinations of features. However, due to space limitations, they have not been described one by one. Therefore, the arbitrary combination of various technical features in the above embodiments is also within the scope of this specification.

[0083] The above method enables high-density laying and multi-directional distribution of conductor paths within limited space and given shape constraints, thereby improving the spatial uniformity of the near-field magnetic field. According to Biot-Laplace and Biot-Savart laws, the magnetic field strength generated by a current-carrying conductor element at a point in space is related to the current, the conductor path, and its distance to that point, and can be expressed as a line integral over the coil path. Its typical form can be written as: and Where dH represents a infinitesimal element of magnetic field strength; I represents current; dl represents a infinitesimal element of length in the current-carrying conductor; μ represents permeability; x represents the distance from the current element to the field point; B represents magnetic flux density; and H represents magnetic field strength. This represents the line integral along the length of the coil.

[0084] The magnetic field distribution essentially originates from the spatial superposition of contributions from the magnetic fields of individual micro-elements along the coil path. Given the limited projected area and shape of the coil, if the conductor path can more fully cover this area and be distributed with finer granularity in different orientations, then different locations inside and outside the coil will receive closer "micro-element superposition contributions," thereby reducing weak field points in local areas caused by sparse paths or unidirectional directions. In other words, fractal coils, by providing longer, denser, and more complex current paths within a limited space, not only improve local magnetic field contributions but, more importantly, can elevate weak field regions and reduce deep weak field points, making the near-field magnetic field more uniformly distributed within the covered area. This reduces blind spots in card swiping and improves attitude tolerance, providing a foundation for NFC / RFID field uniformity control.

[0085] By using the above-mentioned control method for induction coils, induction coils can be deployed in terminal devices to form a denser coil arrangement in a limited space, thereby generating a stronger and more uniform magnetic field. Furthermore, since induction coils possess self-similarity, the mode of the self-similarity region of the induction coil can be controlled by a short-circuit element, thereby precisely controlling the local field distribution without affecting the field of other parts of the coil.

[0086] Based on the same idea, the embodiments of this specification also provide induction coils corresponding to the above methods.

[0087] Figure 2 This is a schematic diagram of an induction coil provided for an embodiment of this specification. Figure 2 As shown, the coil may include a fractal coil body 202 and a plurality of short-circuit elements 204 connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region 206 in the coil body.

[0088] The induction coil can exhibit a multi-turn, multi-directional conductor path distribution within a limited area, allowing the current path to be more fully "spread" within the plane. Furthermore, four sets of short-circuit pads are reserved at several key locations on the coil, such as... Figure 2 As shown in the diagram, when it is necessary to change the local current path, each group of pads can be selectively shorted by soldering short-circuit components, such as 0Ω resistors, short-circuit lines, or configuring switching devices. This provides a structural basis for subsequent field distribution mode switching and fine-tuning. Furthermore, the fractal coil body can be made from a single magnetic wire. The components soldered to the dots in the fractal coil body are short-circuit components. The area within the dashed box is a self-similar region. Figure 2 This illustration shows that each self-similar region is equipped with a short-circuit element. In actual applications, not every self-similar region needs to be equipped with a short-circuit element. It can be set according to actual needs. For example, the short-circuit element in the lower left corner can be omitted. Figure 2 The induction coil is only used as an example to illustrate the concept and is not intended to limit the scope of this application.

[0089] If the short-circuit element is a switching element, it can be one of a MOSFET / CMOS analog switch, a PIN diode switch, a MEMS switch, or a relay. If the short-circuit element is in the on state, its resistance can be extremely small, capable of short-circuiting the corresponding self-similar region, making the current in that region extremely small or even non-existent, thereby weakening or even eliminating the magnetic field in the self-similar region. When in the off state, the self-similar region possesses a magnetic field like other regions. The fractal coil body includes, but is not limited to, Koch snowflake rings, Hilbert curves, and other fractal curves.

[0090] Within the coverage area of ​​the induction coil, the magnetic field strength maintains a relatively consistent distribution over most of the area, exhibiting an overall "in-plane" field coverage characteristic. Weak field areas are significantly reduced, and the field strength gradient is gentler. This aligns with the characteristics of fractal / space-filling conductor paths: due to the dense distribution of conductor segments in multiple directions within the plane, the magnetic field contributions of different conductor elements to various points in space are superimposed with finer granularity. This makes it less likely to form the "locally strong, centrally weak, or edge-gradient" distribution characteristic of traditional simple geometric coils. Consequently, it helps to raise weak field points, reduce card-swiping blind spots, and decrease attitude sensitivity, demonstrating a superior field homogenization effect.

[0091] To facilitate understanding of traditional coils and induction coils, Figure 3 This diagram illustrates the magnetic field strength distribution of a conventional coil and an induction coil, as provided in the embodiments of this specification. Figure 3 As shown, Figure 3 (a) and Figure 3 The colors in (b) can represent the magnetic field strength of the induction coil; the magnetic field strength represented by each color can be seen in the example of magnetic field and color on the right. Figure 3 (a) is a schematic diagram of the magnetic field strength distribution of a conventional coil. The magnetic field of a conventional coil is more likely to be strongly distributed near the conductor or at the edge, while there are more obvious differences in strength within the covered area. At the same time, the areas between different numbers of turns in a conventional coil also exhibit weaker field strength. Figure 3 (b) The induction coil shown exhibits more uniform in-plane field coverage under the same external size constraints, thus providing a basis for NFC / RFID field homogenization and subsequent configurable control.

[0092] Among these features, the induction coil, after field averaging, exhibits a more continuous and consistent high success rate distribution within the effective coverage area: most grid areas maintain a high success rate, the number of low success rate points / low success rate bands is significantly reduced, and the performance degradation in edge areas is more gradual. This indicates that fractal / space-filling conductor paths can provide finer-grained and more uniform coupling contributions in the plane, thereby enhancing areas that might otherwise exhibit weak coupling, reducing card-swiping blind spots, and decreasing sensitivity to placement position and orientation.

[0093] Figure 3 (a) shows a more pronounced spatial non-uniformity in the success rate distribution of traditional multi-turn coils: except for the central or partial areas, continuous low-success-rate bands or scattered weak areas are more likely to appear at the edges and in specific areas corresponding to the turns, resulting in greater differences in availability at different locations within the same test surface. (Comparison) Figure 3 (a) and Figure 3 (b) It can be seen that, under the same external dimensions and test conditions, the field-averaging effect of the fractal coil can significantly improve the spatial consistency of the reading success rate, providing a more stable basic field pattern for subsequent configurable field distribution control based on partitioned short circuits.

[0094] Optionally, the induction coil is also connected to a coil control unit; the coil control unit is used to adjust the state of the short-circuit element so that the induction coil meets the communication requirements of short-range communication. The coil control unit can execute the induction coil control method described above. The induction coil can be controlled by the induction coil control method described above.

[0095] The coil control unit can be an MCU, or it can be a control chip with short-range communication capabilities, such as an NFC tag chip or an RFID chip.

[0096] Optionally, the induction coil is also connected to a signal detection unit; the signal detection unit is used to sense the induction signal of the induction coil; the signal detection unit is connected to the coil control unit; the coil control unit can receive the induction signal sent by the signal detection unit; based on the induction signal, the coil control unit determines that the induction coil does not meet the communication requirements for short-range communication, and can adjust the state of at least one of the short-circuit elements in the induction coil so that the induction coil meets the communication requirements for short-range communication.

[0097] In practical applications, the signal detection unit may include an envelope detection circuit.

[0098] To better understand the adjustment of the induction coil, Figure 4 This is a schematic diagram of the magnetic field distribution of a third-order Hilbert induction coil provided for an embodiment of this specification. Figure 4 As shown, the two sub-unit positions on the upper left and right are defined as element1 and element2, respectively. By loading and turning on the short-circuit element at the reserved short-circuit pad of the corresponding sub-unit, a low-resistance bypass can be formed for the sub-unit, thereby changing the local current path and the contribution of the local magnetic field, and realizing the controllable reconfiguration of the near-field distribution. Figure 4 (a) and Figure 4 The colors in (b) can represent the magnetic field strength of the induction coil. Figure 4 (a) When the corresponding sub-unit of element1 is short-circuited, the magnetic field strength in the upper left region of the coil decreases significantly, and the color changes from the original orange-red region to a green or blue weak field region, indicating that the magnetic field contribution near this sub-unit is effectively weakened; at the same time, the remaining regions still maintain a relatively strong magnetic field distribution. In this case, by short-circuiting element1, the local field strength on the upper left can be suppressed in a directional manner, causing the overall field distribution to show a trend of "migrating or tilting" to the other side.

[0099] Figure 4 (b) When an interference signal is detected in the upper left corner, the short-circuit element at the position of element2 can be short-circuited to reduce the interference signal: a significant green or blue weak field area appears near element2, while the main area, except for the self-similar areas corresponding to elements1 and 2, still maintains a strong field strength distribution, thus not affecting the normal short-range communication of the induction coil. (Comparison) Figure 4 (a) and Figure 4 (b) It can be seen that the shorting of short-circuited elements at different sub-unit positions will cause the weak field region to undergo a controllable “position switching” in space, thereby realizing the discrete configurability of the near-field magnetic field distribution mode without changing the overall shape and area constraints of the coil.

[0100] The third-order Hilbert fractal coil possesses a self-similar structure and can be equivalently considered as a coil composed of multiple local sub-units connected in series or combined. The overall magnetic field is formed by the spatial superposition of the magnetic field contributions of each sub-unit. When a sub-unit is short-circuited to form a bypass, the current distribution along the corresponding path of that sub-unit changes, thereby reducing the magnetic field strength in the vicinity of that region. However, the contributions of other unshort-circuited sub-units still exist, resulting in a field distribution reconstruction effect of "local weakening—overall still usable." Based on this, different field distribution modes can be obtained by selectively short-circuiting different sub-units. This can be used for passive compensation in scenarios where local distortion is caused by metal structures, wireless charging coils, or other interference sources: for example, directional weakening of the side with stronger interference or guiding the effective coupling area to the target card-swiping area, thereby improving card-swiping consistency and anti-interference capabilities in multiple scenarios.

[0101] Optionally, the induction coil is a flexible fractal coil fabricated using flexible printed circuit technology.

[0102] In the embodiments described in this specification, the fractal coil is configured as a three-dimensional structure using flexible printed circuit technology. Specifically, the flexible fractal coil is bent into curved surface structures such as arcs, rings, or cones along a predetermined curvature direction, thereby enabling the coil's magnetic flux components to effectively cover multiple directions, further enhancing the device's coupling capability in lateral, tilted, or surrounding approaches. The curved fractal coil can be integrated into the strap area of ​​a wearable device, or into non-planar space-constrained locations such as the sides or frames of terminal devices containing NFC / RFID, to expand the effective sensing range in three-dimensional space.

[0103] Taking a ring as an example, Figure 5 This is a schematic diagram of the magnetic field distribution of a curved fractal coil provided as an embodiment of this specification. Figure 5 As shown, Figure 5 (a) and Figure 5 The colors in (b) can represent the magnetic field strength of the induction coil; the magnetic field strength represented by each color can be seen in the example of magnetic field and color on the right. Figure 5 (a) can represent a curved fractal coil that bends along the watch strap and forms a ring arrangement with the human body or the shell, so that the watch strap itself has short-range communication sensing or reading and writing capabilities, thereby enabling wearable devices to interact in the near field when not facing each other. Figure 5(b) can be a schematic diagram showing the distribution of magnetic field strength after the induction coil is adjusted. By changing the short-circuit switching state of local sub-units of the fractal coil, the local current path and equivalent radiation contribution of the curved coil are selectively altered, thereby achieving "regional enhancement or regional suppression" of the near-field magnetic field distribution in the watch band area and fine adjustment of the sensing range. This allows for the expansion of the usable coupling coverage of NFC or RFID in three-dimensional space, and also enables local field shaping and anti-interference control in specific directions or regions, thereby enhancing the adaptability and functionality of the device in complex application scenarios.

[0104] Figure 6 This is a schematic diagram of a control link for an induction coil provided in an embodiment of this specification. Figure 6 As shown, the dashed section on the left can be a control module for regulating the induction coil, which may include a beam control module (MCU) and the induction coil. The MCU generates and regulates the electromagnetic field used for data transmission or as wireless energy. The dashed box on the right can be a signal processing module for processing the induction signal, which may include a matching circuit, a multi-stage AC amplifier, an envelope detector circuit, an NFC / RFID chip, and an NFC / RFID device MCU. The matching circuit matches the output impedance of the induction coil with the input impedance of the subsequent amplifier, maximizing power transmission efficiency. The multi-stage AC amplifier amplifies weak high-frequency induction signals stage by stage. The envelope detector circuit detects the induction signal. The NFC / RFID chip is a communication chip used to complete protocol layer processing. The NFC / RFID device MCU can be a control unit that runs application logic. Digital signals such as logs, commands, and data can represent the uplink communication link from the receiver to the transmitter. Ve can represent the induction signal. The NFC / RFID device MCU and the beam control module (MCU) can be a single coil control unit or together constitute a coil control unit. The signal detection unit can at least include an envelope detector circuit.

[0105] When the induction coil is in control mode, the coil control unit can generate multiple digital or analog control signals to control the shorting or disconnection of various short-circuit components, thereby changing the local current path and equivalent impedance of the induction coil and reconstructing the magnetic field distribution pattern in the near field of the antenna. A detection branch is drawn from the antenna end or the receiving link, and the induced signal is obtained through amplification and envelope detection. This induced signal is used to characterize the real-time coupling strength or interference strength in the current scenario. Based on the induced signal, the coil control unit can execute a control algorithm to dynamically select switch combinations, achieving adaptive adjustment of the local shielding or bypass area of ​​the induction coil to achieve beam control and interference suppression.

[0106] Based on the same idea, this specification also provides a short-range communication carrier corresponding to the above method in its embodiments.

[0107] The short-range communication carrier may contain the aforementioned induction coil, or may be used to perform the aforementioned control method for the induction coil.

[0108] Optionally, the short-range communication carrier includes a communication coil; the communication coil and the induction coil have at least a partial projection that coincides; the induction coil is located on the side of the communication coil closer to the second device, the second device being a device for short-range communication with the short-range communication carrier.

[0109] In one embodiment of this specification, the positional relationship between the induction coil and the communication coil can be one of coverage, for example, the induction coil covers part or all of the communication coil; or, the projections of the induction coil and the communication coil intersect; or the outer contours of the induction coil and the communication coil coincide; or the induction coil and the communication coil approximately coincide. In practical applications, a single induction coil can also be used as the communication coil without being superimposed on other coils.

[0110] In one embodiment of this specification, if the terminal device needs to expand the sensing area or sensing region, the fractal coil can be larger than the communication coil, and the fractal coil can be arranged in the area that needs to be expanded. If, for the sake of communication stability, the field distribution of the original communication coil is made more uniform, the fractal coil and the communication coil can be substantially consistent and in a state of near overlap.

[0111] In practical applications, a communication coil can be called a communication antenna, used for communication with the other end, such as transmitting communication data. An induction coil can also be called an induction antenna, and can be used as an auxiliary antenna to improve communication performance.

[0112] Optionally, the short-range communication carrier is an NFC tag or an NFC reader. Alternatively, the short-range communication carrier is an RFID tag or an RFID reader.

[0113] Based on the same idea, embodiments of this specification also provide apparatus corresponding to the above methods.

[0114] Figure 7 The embodiments provided in this specification correspond to Figure 1 A schematic diagram of the structure of a control device for an induction coil.

[0115] like Figure 7 As shown, the device may include: The signal acquisition module 702 is used to acquire the induced signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; The communication requirement judgment module 704 is used to determine whether the induction coil meets the communication requirements for short-range communication based on the induction signal. The state adjustment module 706 is used to adjust the state of at least one short-circuit element of the induction coil so that the induction coil meets the communication requirements of short-range communication if the induction coil does not meet the communication requirements of short-range communication.

[0116] based on Figure 7 The embodiments of this specification also provide some specific implementation schemes of the method, which are described below.

[0117] Optionally, the state adjustment module may be specifically used for: Based on the sensing signals of the induction coils of each short-circuit element under different states, the target short-circuit element that needs to be adjusted is determined. Adjust the state of the target short-circuit element.

[0118] Optionally, the communication demand determination module may be specifically used for: Determine whether the intensity of the sensed signal is greater than or equal to a preset intensity; Determine whether the duration of the sensed signal is greater than or equal to a first preset duration; If the intensity of the induction signal is greater than or equal to a preset intensity and the duration is greater than or equal to a first preset duration, then at least one short-circuit element in the induction coil is short-circuited.

[0119] Optionally, the communication demand determination module may be specifically used for: Determine whether the strength of the sensed signal is less than a preset communication strength; Determine whether the duration of the sensed signal is greater than or equal to a second preset duration; If the strength of the sensed signal is less than the preset communication strength and the duration is greater than or equal to the second preset duration, then at least one short-circuit element in the sensed coil will be disconnected.

[0120] Optionally, the state adjustment module may be specifically used for: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Calculate the intensity difference between the candidate induction signal and the induction signal to obtain the intensity difference corresponding to any short-circuit element; Based on the strength difference corresponding to each short-circuit element, the short-circuit element with the largest strength difference is determined as the target short-circuit element.

[0121] Optionally, the state adjustment module may be specifically used for: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate induction signal, the short-circuit element used to obtain the target adjusted induction coil is determined as the target short-circuit element; the target adjusted induction coil is the adjusted induction coil whose signal strength of the candidate induction signal is less than a preset strength.

[0122] Optionally, the state adjustment module may be specifically used for: The candidate short-circuit elements are selected as the target short-circuit elements by sorting the candidate induction signals in ascending order of signal strength, and the candidate short-circuit elements corresponding to the first preset number of candidate induction signals are selected as the target short-circuit elements.

[0123] Optionally, the state adjustment module may be specifically used for: Each of the short-circuit elements is divided into multiple short-circuit element combinations; each of the short-circuit element combinations contains at least two short-circuit elements; For any short-circuit element combination in each of the short-circuit element combinations, switch the state of each short-circuit element in the short-circuit element combination to obtain the adjusted induction coil corresponding to the short-circuit element combination. Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate sensing signals, the target short-circuit element combination that needs to be adjusted is determined; Adjusting the state of the target short-circuit element includes: Adjust the state of each target short-circuit element in the target short-circuit element combination.

[0124] Optionally, the state adjustment module may be specifically used for: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Based on the candidate induction signal of the adjusted induction coil, the target short-circuit element is determined; Adjust the state of the target short-circuit element to obtain the target induction coil; Determine whether the intensity of the induced signal from the target induction coil is less than a preset intensity; The step of dividing each of the short-circuit elements into multiple short-circuit element combinations includes: If the intensity of the induced signal of the target induction coil is greater than or equal to the preset intensity, then each short-circuit element is divided into multiple short-circuit element combinations.

[0125] Optionally, the device can also be used for: Obtain the target sensing signal of the induction coil after the state of the at least one short-circuit element has been adjusted; If the duration for which the intensity of the target sensing signal is less than the preset intensity is greater than or equal to a third preset duration, then the at least one short-circuit element is reset to its state before adjustment.

[0126] It is understood that the modules mentioned above refer to computer programs or program segments used to perform one or more specific functions. Furthermore, the distinction between these modules does not imply that the actual program code must also be separate.

[0127] For ease of description, the above devices are described by dividing them into various modules or units based on their functions. Of course, when implementing one or more of these specifications, the functions of each module or unit can be implemented in the same or different software and / or hardware, or a module that performs the same function can be implemented by a combination of multiple sub-modules or sub-units, etc. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0128] The above is a schematic scheme of an induction coil control device according to this embodiment. It should be noted that the technical solution of this induction coil control device and the technical solution of the induction coil control method described above belong to the same concept. For details not described in detail in the technical solution of the induction coil control device, please refer to the description of the technical solution of the induction coil control method described above.

[0129] Based on the same idea, this specification also provides devices corresponding to the above methods in its embodiments.

[0130] Figure 8 A structural block diagram of a computing device provided according to an embodiment of this specification is shown.

[0131] The computing device 800 includes: Memory 810 and processor 820; The memory 810 is used to store computer programs / instructions, and the processor 820 is used to execute the computer programs / instructions, which, when executed by the processor 820, implement the steps of the control method for the induction coil.

[0132] Specifically, the components of the computing device 800 include, but are not limited to, a memory 810 and a processor 820. The processor 820 is connected to the memory 810 via a bus 830, and the database 850 is used to store data.

[0133] The computing device 800 also includes an access device 840, which enables the computing device 800 to communicate via one or more networks 860. Examples of these networks include Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or combinations of communication networks such as the Internet. The access device 840 may include one or more of any type of wired or wireless network interface (e.g., a network interface card (NIC)), such as an IEEE 802.11 Wireless Local Area Network (WLAN) wireless interface, a Wi-MAX (Worldwide Interoperability for Microwave Access) interface, an Ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a Bluetooth interface, a Near Field Communication (NFC) interface, and so on.

[0134] In one embodiment of this specification, the above-described components of the computing device 800 and Figure 8 Other components, not shown, can also be connected to each other, for example, via a bus. It should be understood that... Figure 8 The block diagram of the computing device shown is for illustrative purposes only and is not intended to limit the scope of this application. Those skilled in the art can add or replace other components as needed.

[0135] The computing device 800 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile phones (e.g., smartphones), wearable computing devices (e.g., smartwatches, smart glasses, etc.) or other types of mobile devices, or stationary computing devices such as desktop computers or personal computers (PCs). The computing device 800 can also be a mobile or stationary server.

[0136] The processor 820 executes the computer instructions to implement the steps of the induction coil control method.

[0137] The above is a schematic representation of a computing device according to this embodiment. It should be noted that the technical solution of this computing device and the technical solution of the aforementioned induction coil control method belong to the same concept. Details not described in detail in the technical solution of the computing device can be found in the description of the technical solution of the aforementioned induction coil control method.

[0138] An embodiment of this specification also provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the steps of the control method for the induction coil as described above.

[0139] The above is an illustrative scheme of a computer-readable storage medium according to this embodiment. It should be noted that the technical solution of this storage medium and the technical solution of the induction coil control method described above belong to the same concept. For details not described in detail in the technical solution of the storage medium, please refer to the description of the technical solution of the induction coil control method described above.

[0140] An embodiment of this specification also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the steps of the above-described control method for the induction coil.

[0141] The above is an illustrative scheme of a computer program product according to this embodiment. It should be noted that the technical solution of this computer program product and the technical solution of the induction coil control method described above belong to the same concept. For details not described in detail in the technical solution of the computer program product, please refer to the description of the technical solution of the induction coil control method described above.

[0142] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the embodiments of apparatus, devices, media, and program products, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments. The apparatus, devices, media, and program products provided in the embodiments of this specification correspond to the methods, and therefore the apparatus, devices, media, and program products also have similar beneficial technical effects as the corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the corresponding apparatus, devices, media, and program products will not be repeated here.

[0143] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0144] In the 1990s, improvements to a technology could be clearly distinguished as either hardware improvements (e.g., improvements to the circuit structure of diodes, transistors, switches, etc.) or software improvements (improvements to methodology). However, with technological advancements, many methodological improvements today can be considered direct improvements to hardware circuit structures. Designers almost always obtain the corresponding hardware circuit structure by programming the improved methodology into the hardware circuit. Therefore, it cannot be said that a methodological improvement cannot be implemented using hardware physical modules. For example, a Programmable Logic Device (PLD) (such as a Field Programmable Gate Array (FPGA)) is such an integrated circuit whose logic function is determined by the user programming the device. Designers can program a digital system themselves to "integrate" it onto a PLD, without needing chip manufacturers to design and manufacture dedicated integrated circuit chips. Furthermore, nowadays, instead of manually manufacturing integrated circuit chips, this programming is mostly implemented using "logic compiler" software. Similar to the software compiler used in program development, the original code before compilation must also be written in a specific programming language, called a Hardware Description Language (HDL). There are many HDLs, such as ABEL (Advanced Boolean Expression Language), AHDL (Altera Hardware Description Language), Confluence, CUPL (Cornell University Programming Language), HDCal, JHDL (Java Hardware Description Language), Lava, Lola, MyHDL, PALASM, and RHDL (Ruby Hardware Description Language). Currently, the most commonly used are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also understand that by simply performing some logic programming on the method flow using one of these hardware description languages ​​and programming it into an integrated circuit, the hardware circuit implementing the logical method flow can be easily obtained.

[0145] The controller can be implemented in any suitable manner. For example, it can take the form of a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicon Labs C8051F320. A memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art will also recognize that, in addition to implementing the controller in purely computer-readable program code form, the same functionality can be achieved by logically programming the method steps to make the controller take the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, such a controller can be considered a hardware component, and the means included therein for implementing various functions can also be considered as structures within the hardware component. Alternatively, the means for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0146] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or any combination of these devices.

[0147] For ease of description, the above devices are described separately by function as various units. Of course, in implementing this application, the functions of each unit can be implemented in one or more software and / or hardware.

[0148] Those skilled in the art will understand that one or more embodiments of this specification can be provided as a method, system, or computer program product. Therefore, the invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0149] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0150] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0151] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0152] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0153] Memory may include non-persistent storage in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0154] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital character versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0155] This application can be described in the general context of computer-executable instructions, such as program modules, that are executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform a specific task or implement a specific abstract data type. This application can also be practiced in distributed computing environments where tasks are performed by remote processing devices connected via a communication network. In distributed computing environments, program modules can reside in local and remote computer storage media, including storage devices.

[0156] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling an induction coil, comprising: Acquire the induced signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; Based on the sensed signal, determine whether the sensed coil meets the communication requirements for short-range communication; If the induction coil does not meet the communication requirements for short-range communication, the state of at least one short-circuit element of the induction coil is adjusted so that the induction coil meets the communication requirements for short-range communication.

2. The method according to claim 1, wherein adjusting the state of at least one short-circuit element of the induction coil specifically includes: Based on the sensing signals of the induction coils of each short-circuit element under different states, the target short-circuit element that needs to be adjusted is determined. Adjust the state of the target short-circuit element.

3. The method according to claim 1, wherein the sensed signal is an interference signal, and the step of determining whether the induction coil meets the communication requirements for short-range communication based on the sensed signal specifically includes: Determine whether the intensity of the sensed signal is greater than or equal to a preset intensity; Determine whether the duration of the sensed signal is greater than or equal to a first preset duration; If the intensity of the induction signal is greater than or equal to the preset intensity, and the duration is greater than or equal to the first preset duration, then at least one short-circuit element in the induction coil is short-circuited.

4. The method according to claim 1, wherein the sensing signal is a communication signal, and the step of determining whether the induction coil meets the communication requirements for short-range communication based on the sensing signal specifically includes: Determine whether the strength of the sensed signal is less than a preset communication strength; Determine whether the duration of the sensed signal is greater than or equal to a second preset duration; If the strength of the sensed signal is less than the preset communication strength and the duration is greater than or equal to the second preset duration, then at least one short-circuit element in the sensed coil will be disconnected.

5. The method according to claim 2, wherein determining the target short-circuit element to be adjusted based on the induced signal of the induction coil of each of the short-circuit elements under different states specifically includes: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Calculate the intensity difference between the candidate induction signal and the induction signal to obtain the intensity difference corresponding to any short-circuit element; Based on the strength difference corresponding to each short-circuit element, the short-circuit element with the largest strength difference is determined as the target short-circuit element.

6. The method according to claim 2, wherein determining the target short-circuit element to be adjusted based on the induced signal of the induction coil of each of the short-circuit elements in different states specifically includes: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate induction signal, the short-circuit element used to obtain the target adjusted induction coil is determined as the target short-circuit element; the target adjusted induction coil is the adjusted induction coil whose signal strength of the candidate induction signal is less than a preset strength.

7. The method according to claim 6, wherein determining the short-circuit element used to obtain the target adjusted induction coil as the target short-circuit element specifically includes: The candidate short-circuit elements are selected as the target short-circuit elements by sorting the candidate induction signals in ascending order of signal strength and placing the candidate short-circuit elements corresponding to the first preset number of candidate induction signals.

8. The method according to claim 2, wherein determining the target short-circuit element to be adjusted based on the induced signal of the induction coil of each of the short-circuit elements in different states specifically includes: Each of the short-circuit elements is divided into multiple short-circuit element combinations; each short-circuit element combination contains at least two short-circuit elements; For any short-circuit element combination in each of the short-circuit element combinations, switch the state of each short-circuit element in the short-circuit element combination to obtain the adjusted induction coil corresponding to the short-circuit element combination. Obtain the candidate induction signal of the adjusted induction coil; Based on the candidate sensing signals, the target short-circuit element combination that needs to be adjusted is determined; Adjusting the state of the target short-circuit element includes: Adjust the state of each target short-circuit element in the target short-circuit element combination.

9. The method of claim 8, further comprising, before dividing each of the short-circuit elements into a plurality of short-circuit element combinations: For any short-circuit element among the various short-circuit elements, switch the state of any short-circuit element to obtain the adjusted induction coil corresponding to any short-circuit element; Based on the candidate induction signal of the adjusted induction coil, the target short-circuit element is determined; Adjust the state of the target short-circuit element to obtain the target induction coil; Determine whether the intensity of the induced signal from the target induction coil is less than a preset intensity; The step of dividing each of the short-circuit elements into multiple short-circuit element combinations includes: If the intensity of the induced signal of the target induction coil is greater than or equal to the preset intensity, then each of the short-circuit elements is divided into multiple short-circuit element combinations.

10. The method according to claim 1, further comprising: Acquire the target sensing signal of the induction coil after the state of the at least one short-circuit element has been adjusted; If the duration for which the intensity of the target sensing signal is less than the preset intensity is greater than or equal to the third preset duration, then the at least one short-circuit element is reset to its state before adjustment.

11. An induction coil, comprising a fractal coil body and a plurality of short-circuiting elements connected to the fractal coil body, the short-circuiting elements being used to short-circuit at least one self-similar region in the coil body.

12. The induction coil according to claim 11, wherein the induction coil is further connected to a coil control unit; the coil control unit is used to adjust the state of the short-circuit element so that the induction coil meets the communication requirements of short-range communication.

13. The induction coil according to claim 12, wherein the induction coil is further connected to a signal detection unit; the signal detection unit is used to sense the induced signal of the induction coil; the signal detection unit is connected to the coil control unit; the coil control unit is capable of receiving the induced signal sent by the signal detection unit; and the coil control unit, based on the induced signal, determines that the induction coil does not meet the communication requirements for short-range communication, and is capable of adjusting the state of at least one of the short-circuit elements in the induction coil so that the induction coil meets the communication requirements for short-range communication.

14. The induction coil according to claim 11, wherein the induction coil is a flexible fractal coil fabricated using flexible printed circuit technology.

15. A short-range communication carrier comprising an induction coil as described in any one of claims 11 to 14 or for performing the method as described in any one of claims 1 to 10.

16. The short-range communication carrier according to claim 15, wherein the short-range communication carrier includes a communication coil; the communication coil and the induction coil have at least a partial projection that coincides; the induction coil is located on the side of the communication coil closer to the second device, the second device being a device for short-range communication with the short-range communication carrier.

17. A control device for an induction coil, comprising: A signal acquisition module is used to acquire the induced signal of the induction coil; the induction coil includes a fractal coil body and a plurality of short-circuit elements connected to the fractal coil body, the short-circuit elements being used to short-circuit at least one self-similar region in the coil body; The communication requirement judgment module is used to determine, based on the sensing signal, whether the sensing coil meets the communication requirements for short-range communication; A state adjustment module is used to adjust the state of at least one short-circuit element of the induction coil so that the induction coil meets the communication requirements for short-range communication if the induction coil does not meet the communication requirements for short-range communication.

18. A computing device, comprising: Memory and processor; The memory is used to store computer programs / instructions, and the processor is used to execute the computer programs / instructions, which, when executed by the processor, implement the steps of the method according to any one of claims 1 to 10.

Images