A method, apparatus, device, medium and product for regulating non-contact communication

Abstract

The embodiment of the present specification provides a kind of non-contact communication adjustment method, device, equipment, medium and product.Scheme includes: obtaining radio frequency signal at target position;Then judge whether the signal strength of the radio frequency signal meets preset requirement;If the signal strength of the radio frequency signal does not meet preset requirement, generate prompt information for prompting to increase shielding film.

Description

Technical Field

[0001] This specification relates to one or more embodiments in the field of contactless communication technology, and particularly to a method for regulating contactless communication. This specification also relates to a method for determining a field distribution, a contactless communication device, a method for regulating contactless communication, a computing device, a computer-readable storage medium, and a computer program product. Background Technology

[0002] With the rapid development of technologies such as the Internet of Things (IoT), mobile payment, smart identity recognition, and industrial automation, contactless communication technologies, such as Near Field Communication (NFC), Radio Frequency Identification (RFID), and Bluetooth, have become key means to achieve short-range data exchange between devices due to their convenience, efficiency, and interactivity. They are widely used in many fields such as mobile payment, access control systems, logistics tracking, and smart device pairing.

[0003] In practical applications, metallic objects, liquids, or other electromagnetic noise sources in the working environment (such as Wi-Fi routers, large motors, and high-voltage lines) may alter the electromagnetic field distribution of the communication antenna, causing carrier signal attenuation, multipath effects, or complete shielding, thereby triggering communication interruptions or read / write failures. Alternatively, when multiple readers or tags (such as RFID tags) operate simultaneously within similar frequencies and distances, signal collisions and competition can occur, preventing the readers from correctly identifying or parsing information about specific targets, significantly reducing the throughput and efficiency of contactless communication.

[0004] Therefore, improving the stability of contactless communication is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] In view of this, one or more embodiments of this specification provide a method, apparatus, device, and computer-readable medium for regulating contactless communication to improve the stability of contactless communication.

[0006] According to a first aspect of one or more embodiments of this specification, a method for adjusting contactless communication is provided, comprising: acquiring a radio frequency signal at a target location; the radio frequency signal including at least one of an interference signal generated by a first device for contactless communication at the target location or a radio frequency signal of a second device for contactless communication in a desired direction and an undesired direction; the desired direction representing a direction in which the second device is expected to perform contactless communication; the undesired direction representing at least some directions other than the desired direction; determining whether the signal strength of the radio frequency signal meets a preset requirement; the preset requirement being a requirement for enabling contactless communication; if the signal strength of the radio frequency signal does not meet the preset requirement, generating a prompt message, the prompt message being used to prompt the addition of a shielding film at the first device or the second device.

[0007] According to a second aspect of one or more embodiments of this specification, a method for determining field distribution is provided, comprising: acquiring first signal information of multiple points in an area where a device under test is located; the first signal information being obtained by measuring the signal strength of the multiple points using a measuring tool; acquiring simulated field distribution information of the device under test; the simulated field distribution information being obtained by simulating the device under test using a simulation system; and adjusting the simulated field distribution information based on the multiple first signal information to obtain actual field distribution information corresponding to the device under test.

[0008] According to a third aspect of one or more embodiments of this specification, a non-contact communication adjustment device is provided, comprising: a signal acquisition module for acquiring a radio frequency signal at a target location; the radio frequency signal including at least one of an interference signal generated by a first non-contact communication device at the target location or a radio frequency signal from a second non-contact communication device in a desired direction and an undesired direction; the desired direction representing a direction in which the second device is expected to perform non-contact communication; the undesired direction representing at least some directions other than the desired direction; a judgment module for judging whether the signal strength of the radio frequency signal meets a preset requirement; the preset requirement being a requirement for enabling non-contact communication; and a prompting module for generating a prompting message if the signal strength of the radio frequency signal does not meet the preset requirement, the prompting message being used to prompt the addition of a shielding film at the first device or the second device.

[0009] According to a fourth 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 executes the computer instructions to implement the steps of the above-described method for adjusting non-contact communication or method for determining field distribution.

[0010] According to a fifth 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 above-described method for adjusting the contactless communication or the method for determining the field distribution.

[0011] According to a fifth 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 contactless communication adjustment method or field distribution determination method.

[0012] One embodiment of this specification can achieve at least the following beneficial effects: by detecting the radio frequency signal strength at the target location, and then determining whether the signal strength meets the requirements of contactless communication, if it does not meet the requirements, a prompt message can be generated to add a shielding film. In this way, by adding a shielding film, the radio frequency signal strength at the target location can be guaranteed to meet the preset requirements, thereby improving the stability of contactless communication.

[0013] On the other hand, by suggesting the addition of a shielding film, no immersion modification is required, which avoids excessive internal modifications to the first and second devices for non-contact communication. Even the first and second devices that are already in use can use the adjustment methods provided in the embodiments of this specification to improve the communication process, making it more universal. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram illustrating an application scenario of a non-contact communication adjustment method provided in one embodiment of this specification.

[0016] Figure 2 A flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification;

[0017] Figure 3 A flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification;

[0018] Figure 4 This diagram illustrates a desired direction and a non-desired direction according to one embodiment of this specification.

[0019] Figure 5A flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification;

[0020] Figure 6 A flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification;

[0021] Figure 7 This specification provides a schematic diagram of the structure of a measurement system according to one embodiment.

[0022] Figure 8 This is a flowchart illustrating a method for determining field distribution according to one embodiment of this specification.

[0023] Figure 9 A schematic diagram of a non-contact communication adjustment device provided in one embodiment of this specification;

[0024] Figure 10 This is a structural block diagram of a computing device provided for one embodiment of this specification. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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 limit the scope of one or more embodiments of this specification. The singular forms “a,” “an,” “an,” “the,” and “the” 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” used in one or more embodiments of this specification includes any or all possible combinations of one or more associated listed items. 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 a process, method, product, or apparatus that includes said elements is not excluded.

[0028] Although the terms first, second, etc., may be used to describe various information in one or more embodiments of this specification, such 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 and second do not necessarily indicate order; often they are used to distinguish 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. The word "if" as used in one or more embodiments of this specification can be interpreted as "when," "when," or "in response to a determination."

[0029] 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 data sent by B, or it can be understood as A indirectly receiving data sent by B through other entities such as C. Similarly, B sending data to A can be understood as B directly sending data to A, or it can be understood as B indirectly sending data to A through other entities such as C. Here, C can be one entity, or it can be two or more entities. 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 above 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.

[0030] 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.

[0031] The following explains the terms and concepts used in one or more embodiments of this specification.

[0032] Contactless communication refers to the technology that allows two devices to exchange and communicate data over short distances without physical connection or contact, using media such as radio waves, electromagnetic waves, or light waves. Examples include NFC (Near-Field Communication), RFID (Radio-Frequency Identification), Bluetooth, Wi-Fi, and Zigbee.

[0033] NFC (Near Field Communication) is a short-range wireless communication technology with a typical operating distance of less than 10cm, used in scenarios such as mobile payments, access control cards, and public transport cards. In NFC, the device that actively transmits signals can be called the master device or the transmitting device, such as an NFC card reader or a device in card reader mode. The device that passively responds to the signals transmitted by the master device can be called the slave device or the target device, such as an NFC tag, a device in card emulation mode, or a device with an NFC tag.

[0034] RFID (Radio-Frequency Identification) is a type of automatic identification technology that uses wireless radio frequency for non-contact two-way data communication. It reads and writes records (electronic tags or RFID cards) using wireless radio frequency to achieve the purpose of identifying targets and exchanging data.

[0035] Transparent conductive film: A film that is transparent in the visible light band, has a transmittance of >70%, is conductive, has a sheet resistance of <20Ω, and a thickness of (0.05mm~2mm).

[0036] Ordered metal mesh: One type of conductive layer in transparent conductive thin films, including micro-ordered meshes at the micrometer scale formed by conductive metal materials such as copper and silver.

[0037] Disordered metal mesh: One type of conductive layer in transparent conductive thin films, mainly referring to micro-ordered meshes formed by methods such as metal line ink coating.

[0038] Graphene film: One type of transparent conductive film conductive layer, a material that combines high thermal conductivity and ultra-flexibility.

[0039] Indium tin oxide (ITO) is one type of transparent conductive thin film conductive layer. In practical applications, other semiconductor materials with similar functions can also be included, such as transparent conductive semiconductor materials represented by ITO.

[0040] In some related technologies, anti-interference is achieved by fine-tuning the frequency of the interference source or device, but this proactive avoidance requires invasive modifications. In other related technologies, the back of the NFC coil PCB is etched with Yagi wood and slot antennas to form an absorbing shielding layer, replacing the original ferrite and absorbing materials used for shielding on the back of the NFC coil. This needs to be defined during the antenna design phase, which is inconvenient and cannot solve the interference problem of existing devices.

[0041] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0042] Figure 1This is a schematic diagram illustrating an application scenario of a non-contact communication adjustment method provided in one embodiment of this specification.

[0043] like Figure 1 As shown, this explanation uses NFC (Near Field Communication) as an example. Assume the first device 1 is an NFC reader that actively emits radio frequency (RF) signals; the second device 2 is an NFC tag that senses the signals emitted by the reader. When the first device 1 and the second device 2 are close together, the second device 2 will continuously sense the RF signals emitted by the reader, causing interference. For example, on the same checkout counter, a first payment device with NFC reader functionality, such as a POS machine, and a second payment device used as a tag, such as an NFC tag, card, or an electronic device in card emulation mode or containing an NFC tag, are placed together. If the first and second payment devices are close together, interference will occur between them.

[0044] The radio frequency signal of the first device 1 at the location of the second device 2 can represent the interference signal sensed by the second device 2. If the radio frequency signal of the first device 1 at the location of the second device 2 does not meet the requirements of contactless communication, for example, if the interference signal strength received by the second device 2 is large, or if the signal strength of the second device is large in a certain direction, the communication adjustment device can generate a prompt message to suggest adding a shielding film at the first or second device, such as... Figure 1 As shown, a shielding film 3 is attached to the side of the second device 2 to adjust the signal between the first and second devices in a non-immersion manner, thereby reducing interference to the second device.

[0045] The communication adjustment device can be either the first device or the second device, or it can be a device other than the first and second devices capable of generating prompt information based on radio frequency signals, or it can be a device capable of interacting with a server. The communication adjustment device may have a display screen or voice broadcast capability, displaying prompt information through text or voice playback. Alternatively, the communication adjustment device can connect to the terminal device of staff or other authorized users via wired or wireless means, sending prompt information to the user terminal, which the user can then access. For example, the communication adjustment device can connect to the user's terminal device via a local area network (LAN), wide area network (WAN), internet connection, Bluetooth connection, hotspot connection, or other types of data network. The terminal device may include, but is not limited to, smartphones, tablets, laptops, PDAs, personal computers, smart home devices, and in-vehicle devices.

[0046] The first device 1 and / or the second device 2 may include devices with near-field communication (NFC) functionality, such as portable terminal devices like smartphones, smartwatches, wristbands, laptops, and tablets; smart home devices; in-vehicle devices; payment devices like POS machines and self-service checkout machines; or devices used for processing payment transactions, such as payment devices used at cash registers or self-service checkouts; or devices used for processing check-in, login, access control, and turnstiles, such as devices used for check-in via NFC for going to work, school, or attending events; devices used for member login or application login via NFC; access control devices used in residential or office buildings; card readers used for public transportation such as buses and subways; or devices used for identity or ticket verification at tourist attractions, events, or concerts. The device acting as a slave device in either the first or second device may also be a near-field communication tool such as an NFC tag or card. The device types of the first and second devices may be the same or different; this is not limited here.

[0047] This application provides a method for regulating non-contact communication, and also relates to a method for determining field distribution, a device for regulating non-contact communication, a computing device, a computer-readable storage medium, and a computer program product, which will be described in detail in the following embodiments.

[0048] Figure 2 This is a flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification.

[0049] From a programming perspective, the entity executing the process can be a program hosted on an application server or application terminal. It can be understood that this method can be executed by any device, equipment, platform, or cluster of devices with computing and processing capabilities.

[0050] like Figure 2 As shown, the process may include the following steps:

[0051] Step 202: Acquire the radio frequency signal at the target location.

[0052] The radio frequency signal may include interference signals generated by a first contactless communication device at the target location, or radio frequency signals from a second contactless communication device in at least one of a desired direction and an undesired direction. The desired direction indicates the direction in which the second device is expected to perform contactless communication; the undesired direction indicates at least some directions other than the desired direction.

[0053] The first device and the second device can be the same device, and the target location can be a location near the device, such as a location within the radiation range, or a location near another contactless communication device; or the target location can be a location within the direction range of the device for contactless communication, for example, the working surface of the device for contactless communication is facing upwards, and the target location can be one or more locations above the working surface.

[0054] Alternatively, the first and second devices can be different devices. In one implementation, the first device can be a device capable of emitting radio frequency signals, such as a card reader for NFC near-field communication or an RFID device capable of emitting RFID signals. The target location can be within the radiation range of the first device, such as within 10 cm, 20 cm, or 50 cm of the first device. Alternatively, the second device can be a tag device for NFC near-field communication or an RFID tag device. The target location can be the location of the second device for contactless communication in the desired direction, such as the location of the working surface of the second device used for contactless communication, or the area facing that working surface. In another implementation, both the first and second devices can be master devices for contactless communication. If the two locations are close together, mutual interference may occur.

[0055] The radio frequency (RF) signal can be emitted by a first device. For example, the first device, acting as a master device, can actively emit an RF signal to detect the presence of a slave device nearby or to communicate with a slave device. The RF signal at the target location can be an RF signal emitted by the first device detected at the target location. Alternatively, the RF signal can be emitted by a second device. For example, the second device, acting as a slave device, has the capability to actively emit an excitation signal. The RF signal at the target location can be an excitation signal emitted by the second device detected at the target location, where the excitation signal is also a type of RF signal.

[0056] Step 204: Determine whether the signal strength of the radio frequency signal meets the preset requirements.

[0057] The preset requirement is the ability to perform contactless communication. It can be set according to communication needs.

[0058] Step 206: If the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated, which is used to prompt the addition of a shielding film at the first device or the second device.

[0059] The preset requirements can represent the requirements that enable the first device or the second device to perform normal contactless communication. These requirements can be determined according to the contactless communication protocol adopted by the first device or the second device, or according to the success rate of contactless communication between the first device and other devices, or between the second device and other devices.

[0060] For example, the second device is located at the target location, or near the target location. The target location can be a location within the communication range of the second device. The first device, acting as a card reader, will cause signal interference to the second device, which can be either a tag device or a card reader. In practical applications, the success rate of the second device processing transactions with other devices (such as mobile phones) via contactless communication (e.g., NFC) under different radio frequency signal strengths at the target location can be determined through statistical analysis or experiments. Assuming a 95% success rate falls within the normal processing range of the second device, the signal strength at the target location at 95% success rate can be set as a preset strength. If the signal strength at the target location exceeds this preset strength, the interference is considered strong, requiring the addition of a shielding layer to reduce it.

[0061] Staff or relevant personnel can add a shielding film based on this prompt to reduce signal interference at the target location. This external shielding method reduces interference without requiring internal modifications to the equipment, simplifying operation. Furthermore, it can be used to reduce interference with existing or in-use equipment, making it more universally applicable.

[0062] As one implementation, if the radio frequency signal is an interference signal generated by the second device at the target location, the determination of whether the signal strength of the radio frequency signal meets the preset requirements may specifically include: determining whether the signal strength of the radio frequency signal is less than or equal to a first preset threshold; the first preset threshold is an interference threshold that the second device can withstand.

[0063] Correspondingly, if the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated. Specifically, this may include generating a prompt message if the signal strength of the radio frequency signal is greater than the first preset threshold.

[0064] The target location can be the location of the second device or a location within the sensing range of the second device; the second device has not yet been deployed at or near the target location, but is planned to be deployed. The aforementioned radio frequency signal can be a radio frequency signal acquired when the second device is already present, or it can be a radio frequency signal acquired when only the first device is present.

[0065] If a second device exists at the target location, acquiring the radio frequency signal at the target location can refer to acquiring the radio frequency signal sensed by the second device at the target location. Alternatively, signal measurement tools or systems can be used to acquire the radio frequency signal at the target location. No limitation is made here.

[0066] The target location can be a single location point or multiple location points. If the target location is multiple location points, the above-mentioned determination of whether the signal strength of the radio frequency signal is less than or equal to the first preset threshold can include: determining whether the radio frequency signal strength of each location point is less than or equal to the first preset threshold; or, determining whether the signal strength at the location point with the largest radio frequency signal strength is less than or equal to the first preset threshold.

[0067] Alternatively, the percentage method can be used to determine whether the radio frequency signal meets the preset requirements. For example, if the target location includes multiple location points, the signal strength information of the radio frequency signal at each location point can be determined, and then the number of radio frequency signals with a signal strength greater than or equal to a first preset threshold can be determined. The ratio of this number to the total number of signals can be determined to be greater than or equal to a preset ratio. If it is greater than or equal to the preset ratio, it can indicate that the preset requirements for contactless communication are not met, and a prompt message to add a shielding film can be generated.

[0068] The prompt message may be a prompt to the user to add a shielding film at or near the first device, or it may be a prompt to the user to add a shielding film at or near the second device. The prompt message may include at least one type of information, such as text, voice, animation, symbols, and prompt sounds.

[0069] To minimize the impact on the appearance of the first or second device, the shielding film can be a transparent conductive film. The transparent conductive film may include a transparent substrate and a transparent conductive layer attached to the substrate. The transparent substrate can be a non-plastic material such as glass or a plastic material such as PET plastic, providing mechanical support for the conductive layer. The transparent conductive layer may include non-uniform materials such as metal mesh or metal line ink, or uniform transparent conductive semiconductor materials such as graphene film or ITO (Indium Tin Oxide).

[0070] Optionally, the prompt information may include at least one of the following: signal strength information of the radio frequency signal, location information of the added shielding film, and specifications of the required added shielding film. The location information may include at least one of the following: at the first device, at the second device, and at a location between the first device and the second device; the specifications of the shielding film may include at least one of the following: model information, name information, shielding rate information, and light transmittance information.

[0071] In practical applications, the shielding film can be fixed to the outer surface of the first or second device by means of pasting, clipping, or other methods, or it can be fixed at a certain position between the first and second devices.

[0072] For equipment in production or recycled and modified equipment, in one embodiment of this specification, the entity executing the method can also be a production system or an equipment modification system. The aforementioned prompt information may not be presented in a user-recognizable form, but rather as a prompt instruction that triggers the production system to perform the process of adding a shielding film to the first or second equipment. The action of adding the shielding film can also be performed by an automated system.

[0073] In practical applications, devices used for contactless communication typically have a working area, or the area for contactless communication can be marked on the device surface for easy user identification, such as the upper surface of the contactless communication device. Radio frequency signals are magnetic field signals; in practical applications, the distribution of the magnetic field signal may be a three-dimensional ellipsoid radiating outwards from a certain point. Interference experienced by the second device may originate from its non-working area, such as the side of the device. The aforementioned target location could be a position corresponding to the side of the second device.

[0074] Figure 3 This is a flowchart illustrating a non-contact communication adjustment method according to one embodiment of this specification. The example used here is a first device as the interference source, a target location being one or more locations where the first device generates interference, and a location of a second device in an undesirable direction. Figure 3 As shown, the method may include:

[0075] Step 302: Determine the desired and undesired directions of the second device.

[0076] The desired direction can refer to the direction in which the second device interacts with other service terminals via contactless communication, such as the direction in which it touches another service terminal. The undesired direction can also refer to a direction other than the desired direction, such as a direction in which there is no interaction with other service terminals, like the direction in which there is no contact. Assuming the upper surface of the second device is the surface that touches another terminal, the desired direction can include the direction the upper surface faces, such as the upper surface itself and at least a portion of the area above it; the undesired direction can refer to the side or bottom surface of the second device.

[0077] Figure 4 This diagram illustrates a desired direction and a non-desired direction as provided in one embodiment of this specification. Figure 4As shown in the figure, taking the anti-interference application of NFC tag devices as an example, the NFC device in this scenario is a cylinder of a certain height, with its end face placed on a fixed working plane. Its desired direction can be a cone-shaped area with a certain angle centered on the normal of the NFC device's end face. Traditional NFC coils, however, are designed with an elliptical radiation direction centered on the device, encompassing both desired and undesired radiation directions. Therefore, NFC interference signals may enter from the undesired radiation direction and couple into the NFC device, causing interference.

[0078] Step 304: Obtain the radio frequency signal at the target location in the undesired direction.

[0079] The radio frequency signal can be an interference signal generated by the first device in an undesirable direction from the second device.

[0080] Step 306: Determine whether the signal strength of the radio frequency signal is greater than or equal to the first preset threshold.

[0081] The first preset threshold can be zero or a value greater than zero, and can be set according to the anti-interference capability of the second device or the service success rate of the second device. For example, the first preset threshold can represent the strength of the interference signal that the second device can withstand without affecting the normal service processing of the second device, such as when the call success rate of the second device is above a preset success rate (such as 95%, 98%, etc.).

[0082] If the signal strength of the radio frequency signal is greater than or equal to the first preset threshold, then step 308 can be executed: generate a prompt message to add a shielding film.

[0083] If the strength of the radio frequency signal meets the requirements, the process can be terminated, such as by executing step 310: End the process.

[0084] This can indicate that the radio frequency signal at the target location in the undesired direction of the second device will not interfere with the second device or affect its normal operation. Alternatively, if the strength of the radio frequency signal meets the requirements, a prompt message can be generated indicating that the current configuration meets the requirements and no adjustment is needed.

[0085] Staff can add the matching shielding film to the first or second device or its vicinity based on the prompts. To ensure the effectiveness of interference reduction, after adding the shielding film, the RF signal at the target location can be acquired again, and the signal strength can be judged. If the requirements are met and the signal strength is less than the first preset threshold, step 310 can be executed to end the process. If the requirements are not met and the signal strength is greater than or equal to the first preset threshold, prompts can continue to be sent to add the shielding film until the requirements are met or the preset number of prompts is reached, at which point the process can be terminated.

[0086] The above explanation uses the example of the target location being a position of the second device in a non-desired direction. In practical applications, the target location can also be a position of the second device in a desired direction, or a position of the first device in a desired or non-desired direction, or any location near the first or second device. A similar process can be used, and will not be elaborated on here.

[0087] In practical applications, interference to the equipment can also be reduced by addressing the issues inherent in the equipment itself. As mentioned above... Figure 4 As shown, contactless communication devices can sense or transmit radio frequency signals from multiple directions. Reducing the signal from undesired directions can also reduce interference experienced by the device or interference caused by the device to other devices. As one implementation, the signal strength can be adjusted from the perspective of the ratio of signal strength in the desired direction to that in the undesired direction. Optionally, the aforementioned radio frequency signals may include the radio frequency signals of the second device in both the desired and undesired directions. Specifically, determining whether the signal strength of the radio frequency signals meets a preset requirement may include: determining whether the ratio of the signal strength of the first radio frequency signal of the second device in the desired direction to the signal strength of the second radio frequency signal of the second device in the undesired direction is greater than or equal to a second preset threshold; the second preset threshold represents a threshold at which the second device can perform contactless communication in the desired direction.

[0088] Correspondingly, if the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated, which may specifically include:

[0089] If the ratio is less than the second preset threshold, a prompt message is generated.

[0090] The first radio frequency signal can represent a signal of the second device at a certain position in the desired direction, or it can represent signals at multiple positions in the desired direction. The second radio frequency signal can represent a signal of the second device at a certain position in an undesired direction, or it can represent signals at multiple positions in an undesired direction.

[0091] The second preset threshold can be a value greater than 1, such as 3 or 5, or it can be a value that includes decimal places. The specific value can be set according to the actual needs of the second device.

[0092] If the ratio of the desired direction to the undesired direction is less than the second preset threshold, it can indicate that the signal strength in the desired direction is too strong and the signal strength in the undesired direction needs to be adjusted. The above prompt information may include a prompt to add a shielding film in the undesired direction.

[0093] In one implementation, the first radio frequency signal may include the signal with the greatest signal strength of the second device in the field distribution in the desired direction; the second radio frequency signal may include the signal with the greatest signal strength of the second device in the field distribution in the undesired direction.

[0094] As another implementation, the signal strength of the first radio frequency signal can be the average of multiple radio frequency signals with signal strength greater than the first threshold in the field distribution of the second device in the desired direction; the signal strength of the second radio frequency signal can be the average of multiple radio frequency signals with signal strength greater than the second threshold in the field distribution of the second device in the undesired direction.

[0095] As another implementation, the signal strength of the first radio frequency signal can be the average value of each signal in the field distribution of the second device in the desired direction; the signal strength of the second radio frequency signal can be the average value of each signal in the field distribution of the second device in the undesired direction.

[0096] In practical applications, the signal strengths of the first and second radio frequency signals can also be determined according to other rules. No specific rules are set here.

[0097] Figure 5 This is a flowchart illustrating a contactless communication adjustment method according to one embodiment of this specification. The explanation uses the example of adjusting the signal strength in the desired and undesired directions of the second device for communication. Figure 5 As shown, the method may include:

[0098] Step 502: Obtain the first radio frequency signal with the strongest signal strength in the region corresponding to the desired direction of the second device.

[0099] Step 504: Obtain the second radio frequency signal with the strongest signal strength in the region corresponding to the undesired direction of the second device.

[0100] In practical applications, the desired and undesired directions can be specified in advance based on the actual working status of the second device.

[0101] Step 506: Calculate the ratio of the signal strength of the first radio frequency signal to the signal strength of the second radio frequency signal.

[0102] Step 508: Determine whether the ratio is greater than or equal to the second preset threshold.

[0103] If the ratio is greater than or equal to the second preset threshold, then step 510: end the process. This can indicate that the second device currently meets the requirements for contactless communication. Alternatively, a prompt message indicating that the current configuration is qualified and meets the communication requirements can be generated.

[0104] If the ratio is less than the second preset threshold, step 512 can be executed: generate a prompt message indicating that a shielding film should be added to the second device in an undesirable direction.

[0105] Based on this prompt, staff can add the shielding film to an undesirable direction of the second device. For example, the shielding film can be fixed to the side of the second device or to the vicinity of the second device.

[0106] To ensure the effectiveness of the shielding film, the first radio frequency signal and the second radio frequency signal of the second device after the shielding film is added can be further acquired and judged until the requirements are met or the process can be terminated after a preset number of prompts are reached.

[0107] Adding a shielding film in the unintended direction can reduce interference from other devices (such as the first device) to the second device, and also reduce interference from the second device to other devices (such as the first device). Furthermore, adding a shielding film in the unintended direction can also limit the communication direction of the second device, improving communication security and effectively preventing other unauthorized devices from reading communication information from the unintended direction.

[0108] By deploying a transparent conductive film near NFC devices (such as on the side of the device), coupling from undesired directions can be shielded, thereby reducing interference. Continuing from the above... Figure 4 Assuming Figure 4 In the scenario shown, the device initially exhibits the same radiation intensity in both the desired and undesired directions. After adjustment, the radiation intensity in the undesired direction is reduced to one-third of its original value, while the desired direction remains unchanged. The desired direction, also known as the desired radiation direction, is the direction in which radiative coupling is expected to occur; the undesired direction, also known as the undesired radiation direction, is the direction in which radiative coupling is expected to be absent or weak.

[0109] In practical applications, shielding can be increased first from the perspective of interference signals, and then further increased from the perspective of the desired direction. As one implementation method, one embodiment of this specification may further include: if the signal strength of the radio frequency signal is less than or equal to the first preset threshold, determining whether the ratio of the signal strength of the first radio frequency signal of the second device located at the target position in the desired direction to the signal strength of the second radio frequency signal of the second device in the undesired direction is greater than or equal to a second preset threshold; if the ratio is less than the second preset threshold, generating a prompt message suggesting adding a shielding layer to the second device in the undesired direction.

[0110] Figure 6 This is a flowchart illustrating a contactless communication adjustment method according to one embodiment of this specification. It is assumed here that a first device and a second device are located close to each other. Figure 6 As shown, the method may include:

[0111] Step 602: Obtain the interference signal generated by the first device at the target location.

[0112] The target location can be the current location of the second device, the location where the second device will be deployed, or a location outside the desired direction of the second device. The target location can be a single location or multiple locations. The interference signal can represent the signal emitted by the first device's radio frequency signal after it reaches the target location. The interference signal can be detected by a measurement system, or it can be the signal emitted by the first device sensed by the second device.

[0113] Step 604: Determine whether the signal strength of the interference signal is greater than or equal to the first preset threshold.

[0114] If the value is greater than or equal to the first preset threshold, then step 606 can be executed: generate the first prompt message.

[0115] This initial notification can be used to prompt the installation of a shielding film on or near the first device. For example, it can indicate the need to install a shielding film in an undesirable direction on the first device. Alternatively, the notification may include specific details about the required shielding film, such as its name, model, and shielding efficiency. Alternatively, the notification may include information about the strength of the interference signal, allowing staff to determine the appropriate shielding film by referring to tables or other methods.

[0116] If the value is less than the first preset threshold, then step 608 can be executed: obtain the first radio frequency signal of the second device in the desired direction and the second radio frequency signal in the undesired direction.

[0117] The first radio frequency signal and the second radio frequency signal can be the signal with the strongest signal strength in the field distribution of the second device in the desired direction and the undesired direction, or they can be other regular signals.

[0118] Step 610: Calculate the ratio of the signal strength of the first radio frequency signal to the signal strength of the second radio frequency signal.

[0119] Step 612: Determine whether the ratio is greater than or equal to the second preset threshold.

[0120] If the ratio is greater than or equal to the second preset threshold, then step 614 can be executed: end the process. Alternatively, a prompt message can be generated indicating that the current configuration is appropriate and no adjustment is needed.

[0121] If the ratio is less than the second preset threshold, then step 616 can be executed: generate the second prompt message.

[0122] The second prompt message can advise the user to add a shielding film in the undesired direction of the second device. The second prompt message may also include one or more of the following: specific rules regarding the required shielding film, the aforementioned ratio information, signal strength information in the undesired direction, and signal strength information in the desired direction.

[0123] In one embodiment of this specification, multi-dimensional adjustments can more effectively reduce signal interference and improve information security.

[0124] When choosing a shielding film, it is advisable to select one with high light transmittance. This can minimize modifications to the appearance of the equipment, avoid excessive impact on its aesthetics, and improve the user experience.

[0125] Optionally, the method in one embodiment of this specification may further include: determining the specifications of a target shielding film that enables the signal strength to meet the preset requirements based on the signal strength of the radio frequency signal and the shielding rate of each spare shielding film; the light transmittance of the target shielding film is greater than or equal to a preset light transmittance threshold.

[0126] Correspondingly, the aforementioned generation of prompt information may specifically include: generating prompt information containing the specification information.

[0127] The spare shielding film can be a usable shielding film, a single-layer shielding film, or a composite shielding film containing multiple single-layer shielding films.

[0128] Specifically, the signal strength to be shielded can be determined based on the signal strength at the target location and the required signal threshold, such as the first preset threshold or the second preset threshold mentioned above. Then, the shielding film that meets the requirements can be determined based on the shielding rate of each shielding film.

[0129] Alternatively, based on the shielding efficiency of each shielding film, the signal strength at the target location can be calculated assuming that each shielding film will be used, and then the shielding film that can make the signal strength at the target location meet the preset requirements can be selected.

[0130] Alternatively, the required shielding film can be determined by looking up a table. For example, a preset lookup table records the correspondence between several signal strengths and the specifications of the corresponding shielding films; for any given signal strength, the specifications of the shielding film corresponding to that signal strength are the specifications of the shielding film that can make that signal strength meet the preset requirements.

[0131] In practical applications, the prompt information may also include the strength information of the radio frequency signal at the target location. The aforementioned preset lookup table can be a lookup table that can be viewed by staff, and the shielding film to be used can be determined by manually looking up the table.

[0132] If the spare shielding film includes a composite shielding film containing multiple layers, the shielding efficiency of the composite shielding film can be determined in the following ways:

[0133]

[0134] ;

[0135] Where, r i t represents the reflectivity of the i-th layer of the shielding film; i R represents the transmittance of the i-th layer of the shielding film; i T represents the total reflectivity of the composite shielding film containing i layers of shielding film; i A represents the total transmittance of the composite shielding film containing i layers of shielding film; total This represents the absorption rate of the composite shielding film containing i layers of shielding film; SE T This indicates the shielding effectiveness of a composite shielding film containing i layers of shielding film; This represents the shielding efficiency of a composite shielding film containing i layers of shielding film; i is an integer greater than or equal to 2. If i is 2, the above R... i-1 The reflectivity r1 of the first layer of shielding film can be used; T i-1 It can be the transmittance t1 of the first layer of shielding film.

[0136] In practical applications, if the shielding efficiency of existing single-layer shielding films cannot meet the shielding requirements, the shielding efficiency of a composite shielding film obtained by stacking multiple single-layer shielding films can be calculated according to the above formula, thereby determining the composite shielding film that meets the requirements.

[0137] As can be seen from the above formula, when the number of shielding layers is too high, the contribution of higher-order shielding layers to reflectivity and transmittance can be approximately ignored. Therefore, in practical applications, 2 to 4 shielding layers can be stacked.

[0138] The light transmittance of single-layer or composite shielding films is also a factor to consider. A shielding film with high light transmittance can be selected from those that meet the requirements. Light transmittance can be measured using existing light transmittance testing tools.

[0139] In the embodiments of this specification, the radio frequency signal of the target location can be obtained by measuring with a measuring device, or it can be obtained by selecting the radio frequency signal of the target location in the field distribution.

[0140] As one implementation, the above-mentioned acquisition of the radio frequency signal at the target location may include: acquiring the radio frequency signal sensed by the test antenna located at the target location.

[0141] The test antenna can be an antenna in a measuring device used for signal detection, or it can be an antenna in the form of a metal coil capable of generating electromagnetic induction. Assuming the first device is an interference source, the radio frequency signal at a target location near the first device can be measured using the measuring device.

[0142] Correspondingly, the above-mentioned determination of whether the signal strength of the radio frequency signal meets the preset requirements may specifically include: performing envelope detection processing on the radio frequency signal to obtain a DC signal; and determining whether the signal strength of the DC signal meets the preset requirements.

[0143] In practical applications, the radio frequency signals sensed by the test antenna are usually AC signals. To facilitate comparison and judgment, DC signals can be obtained through envelope detection, and then the DC signals can be judged.

[0144] Alternatively, the radio frequency signals of the second device in the desired and undesired directions can be measured using a measuring device. Then, the radio frequency signals are subjected to envelope detection processing to calculate the ratio of the first DC signal in the desired direction to the second DC signal in the undesired direction, and then it is determined whether the ratio meets the requirements.

[0145] Figure 7 This is a schematic diagram of a measurement system provided in one embodiment of this specification. Figure 7As shown, the measurement system may include an inductive antenna 702, an envelope detection module 704, and an MCU (Microcontroller Unit) module 706. The inductive antenna 702 can sense radio frequency signals at the target location, such as NFC or RFID signals. This radio frequency signal is processed by the envelope detection module 704 to obtain a DC signal. The MCU module 706 contains processing logic to determine whether the DC signal meets preset requirements. The MCU module 706 may also have a built-in analog-to-digital converter (ADC) to generate prompt information. If the measurement system has a display screen 708, the prompt information can be displayed on the screen. Alternatively, the measurement system has a host computer communication circuit 710, which can send the prompt information to a host computer such as a mobile phone or computer for display.

[0146] To improve the accuracy of adjustment, the detected radio frequency signal can be filtered, amplified, or otherwise processed. Optionally, the method in one embodiment of this specification may further include: performing bandpass filtering on the radio frequency signal to obtain a bandpass filtered signal of a preset frequency band; and amplifying the bandpass filtered signal to obtain an amplified signal.

[0147] The above-mentioned process of performing envelope detection processing on the radio frequency signal to obtain a DC signal may include: performing envelope detection processing on the amplified signal to obtain a DC signal.

[0148] like Figure 7 As shown, the measurement system may also include a bandpass filter 712, which can be used to acquire the radio frequency signal sensed by the induction antenna 702. The bandpass filter 712 can be a filter for filtering preset frequencies, such as filtering signals in the 13.56MHz band, or it can filter signals of other specifications, which can be set according to actual needs. The measurement system may also include a multi-stage AC amplifier 714, which amplifies the bandpass filtered signal output by the bandpass filter 712 to obtain an amplified signal, and inputs it to the envelope detection module 704. The envelope detection module 704 can process the amplified signal to obtain a DC signal, which is then processed by the MCU module for judgment and other steps.

[0149] In practical applications, the above-described measurement system can also exist independently to measure radio frequency signals in any radio frequency scenario, and it is not necessarily required to be applied to the contactless communication adjustment methods provided in the above embodiments. For example, when it is necessary to know the signal strength at a certain location, the above-described measurement system can also be used alone.

[0150] In one embodiment of this specification, the radio frequency signal at the target location can also be determined based on field distribution information. Optionally, the above-described acquisition of the radio frequency signal at the target location may specifically include: acquiring field distribution information of the target device; the target device includes the first device or the second device; and determining the radio frequency signal at the target location from the field distribution information.

[0151] The field distribution information can represent the field distribution information of the radio frequency field emitted by the first device or the second device as a radio frequency signal source; or, the field distribution information can be the field distribution information of the radio frequency field formed by the first device or the second device as a passive device in response to the radio frequency signal emitted by the active device.

[0152] If the target location is near the first device, within the radiation or response range of the first device, the field distribution information of the first device can be obtained, and then the radio frequency signal at the target location can be determined from the field distribution information. If the target location is near the second device, within the radiation or response range of the second device, the field distribution information of the second device can be obtained, and then the radio frequency signal at the target location can be determined from the field distribution information.

[0153] As one implementation, the first radio frequency signal of the second device in the desired direction and the second radio frequency signal in the undesired direction can be determined by selecting the signal with the strongest signal strength in the field distribution in the desired direction as the first radio frequency signal and selecting the signal with the strongest signal strength in the field distribution in the undesired direction as the second radio frequency signal after determining the field distribution information of the second device.

[0154] To facilitate faster determination of the field distribution information of the target device, a method combining sampling point calibration and model extrapolation can be used. Optionally, obtaining the field distribution information of the target device may specifically include: measuring signal information at multiple points in the area where the target device is located; adjusting the simulated field distribution information using the signal information at the multiple points to obtain the actual field distribution information of the target device; the simulated field distribution information is obtained by simulating the target device using a simulation system.

[0155] This involves using existing measurement tools or the measurement system provided in the above embodiments to actually measure multiple points near the target device, determining the signal information at each point. This signal information is the signal obtained from the actual measurement, and it can also record the location information, signal strength, and other information of each point. The selected points can be evenly distributed or randomly selected, and they can be located on the same plane or on different planes; there is no limitation here. For example, one or more points can be selected from eight directions of the target device.

[0156] Alternatively, based on parameters of the target device, such as the number of coil turns and operating frequency, an existing simulation system can be used to simulate the target device and obtain its simulated field distribution information in the simulated scenario. Then, by selecting the simulated information of each measurement point in this simulated field distribution information and understanding the correspondence between the measurement signals and simulated signals at the same location, the entire simulated field distribution information can be adjusted to obtain the actual field distribution information of the target device.

[0157] By rapidly performing electromagnetic simulation and accurately measuring the field distribution at a few sampling points, the correspondence between the simulated and measured field distributions can be obtained, such as the mapping coefficient between the simulated and measured field distributions. Then, based on this correspondence, the actual field distribution can be obtained. This eliminates the need for actual measurement of all points in the field distribution, thus improving measurement efficiency. Furthermore, obtaining the field distribution information quickly can also improve the efficiency of generating prompts for adding shielding films and improving the efficiency of adjusting contactless communication.

[0158] Based on the same approach, this specification also provides a method for determining the field distribution. This method can be used to determine the intensity information of the radio frequency signal at the target location in the above embodiments. Figure 8 This is a flowchart illustrating a method for determining field distribution according to one embodiment of this specification. From a programming perspective, the entity executing the process can be a program mounted on an application server or application terminal. It is understood that this method can be executed by any device, equipment, platform, or cluster of devices with computing and processing capabilities.

[0159] like Figure 8 As shown, the method may include:

[0160] Step 802: Obtain the first signal information of multiple points in the area where the device under test is located.

[0161] The first signal information is obtained by measuring the signal strength of the multiple points using a measuring tool.

[0162] The device under test (DUT) can be a signal source capable of actively transmitting radio frequency (RF) signals or a passive device capable of passively responding to RF signals; it can be an active device or a passive device. For example, the DUT can be the first device or the second device in the above embodiments.

[0163] The area where the device under test is located can be an area radiating outwards from the center of the communication antenna of the device under test, or an area radiating outwards from the space occupied by the device under test, or an area in a certain direction, such as the desired direction or the area in the non-desired direction in the above embodiments.

[0164] Multiple test points can be located at the same distance from the device under test (DUT), or at varying distances. These points can be evenly distributed or randomly selected. The number of test points can be either even or odd, such as 10, 4, or 20 points. The number of test points can also be determined based on the radiation range of the DUT; a larger radiation range requires more test points, and a smaller range requires fewer.

[0165] The measuring tool can be one of the measuring tools described in the above embodiments, or it can be any existing measuring tool capable of measuring radio frequency signal strength. The first signal information may include signal strength information at a certain point, and may also include the location information of that point.

[0166] Step 804: Obtain the simulated field distribution information of the device to be measured.

[0167] The simulated field distribution information is obtained by simulating the device under test using a simulation system.

[0168] In practical applications, existing simulation systems can be used to simulate signals from the device under test and obtain the simulated field distribution information of the device under test.

[0169] Step 806: Adjust the simulated field distribution information according to multiple first signal information to obtain the actual field distribution information corresponding to the device to be measured.

[0170] The actual field distribution information can be used to determine the intensity of the radio frequency signal at the target location in order to execute the methods in the above embodiments.

[0171] In practical applications, the above-described method for determining the field distribution can also be implemented independently and is not necessarily used to determine the intensity of the radio frequency signal at a target location. For example, this method can also be used to measure the field distribution of a device.

[0172] To obtain more accurate actual field distribution information based on the simulated field distribution, the signal strength of the point corresponding to the actual measured point can be selected from the simulated field distribution information, and the simulated field distribution information can be adjusted according to the signal difference at the corresponding location. As one implementation, adjusting the simulated field distribution information based on multiple first signal information can include:

[0173] From the simulated field distribution information, select the second signal information of the simulated point corresponding to the plurality of points;

[0174] Based on each of the first signal information and the second signal information, determine the mapping coefficients between simulation and actual measurement;

[0175] Based on the mapping coefficients, the simulated field distribution information is fitted to obtain the actual field distribution information corresponding to the device to be measured.

[0176] The second signal information can be the radio frequency signal information located at the same position as the first signal information obtained from actual measurement in the simulated field distribution information. Signal information from simulated points can be selected from the simulated field distribution. In practical applications, the second signal information at the corresponding simulated points can be obtained for some or all of multiple points.

[0177] The mapping coefficient can represent the correlation between the first signal information and the second signal information. For example, it can represent the correlation between the actual measured signal strength at the same location and the signal strength at that location in the simulated field distribution. The relationship can be linear or nonlinear.

[0178] After determining the mapping coefficients, the simulated field distribution information can be fitted using these coefficients to obtain the actual field distribution information. For example, if the mapping coefficients represent the offset between the second signal information of the simulated point and the first signal information of the actually measured point, the simulated field distribution information can be increased or decreased by this offset to obtain the actual field distribution information. Alternatively, if the mapping coefficients represent a multiple relationship between the second signal information of the simulated point and the first signal information of the actually measured point, the simulated field distribution information can be multiplied or divided by the mapping coefficients to obtain the actual field distribution information.

[0179] To ensure the accuracy of the measured signal information, a probe can be used for measurement. Optionally, the method in one embodiment of this specification may include:

[0180] Measurement probes are set at multiple points in the area where the device to be measured is located;

[0181] Using the measurement probe, the first signal information at each of the points is determined.

[0182] The measurement probe can be a probe tool capable of measuring radio frequency signals, such as a small metal coil or other metal component used to sense radio frequency signals.

[0183] In practical applications, a single measuring probe can be set at different locations to obtain signal information at each location, or multiple measuring probes can be used to measure different locations separately.

[0184] The measurement can be performed using existing measurement tools, and the measurement probe can be part of an existing measurement tool; alternatively, the measurement can be performed using the measurement system provided in the above embodiments, and the measurement probe in the measurement can be the test antenna in the above measurement system. No specific measurement tool is limited here.

[0185] In one embodiment of this specification, by using electromagnetic simulation and collecting precise field distribution information from a small number of points, a mapping coefficient between the simulated and measured field distributions is obtained. Substituting this mapping coefficient into the simulation results allows for an effective prediction of the actual field distribution. This improves the efficiency of determining the field distribution.

[0186] Based on the same idea, one embodiment of this specification also provides a contactless communication device, which may include a contactless communication module and a shielding film; the shielding film may be determined according to the above method.

[0187] A contactless communication module can be any module capable of enabling contactless communication. For example, it may include a communication antenna, a communication chip, a power supply, a control unit, and so on. For details, please refer to relevant technologies; they will not be elaborated upon here.

[0188] In one implementation, the shielding film may be located in an undesirable area of ​​the contactless communication device; the undesirable area is a direction other than the direction of the working surface of the contactless communication device for contactless communication.

[0189] The desired direction can be the direction in which another interactive device in the contactless communication device approaches and engages in contactless communication. The strong coupling between the contactless communication device and the interactive device facilitates contactless communication such as NFC and RFID. Other directions, or some directions, can be non-desired directions and can be controlled through a shielding film.

[0190] Contactless communication devices can be active or passive devices for contactless communication. For example, they can be NFC card reader devices, or NFC tags or NFC tag devices.

[0191] 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.

[0192] 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.

[0193] Based on the same idea, embodiments of this specification also provide apparatus corresponding to the above methods.

[0194] Figure 9 This is a schematic diagram of a non-contact communication adjustment device provided in one embodiment of this specification.

[0195] like Figure 9 As shown, the device may include:

[0196] The signal acquisition module 902 is used to acquire a radio frequency signal at a target location; the radio frequency signal includes at least one of an interference signal generated by a first contactless communication device at the target location or a radio frequency signal from a second contactless communication device in a desired direction and an undesired direction; the desired direction indicates the direction in which the second device is expected to perform contactless communication; the undesired direction indicates at least some directions other than the desired direction.

[0197] The judgment module 904 is used to determine whether the signal strength of the radio frequency signal meets the preset requirements; the preset requirements are the requirements for enabling contactless communication.

[0198] The prompting module 906 is used to generate a prompting message if the signal strength of the radio frequency signal does not meet the preset requirements. The prompting message is used to prompt the addition of a shielding film at the first device or the second device.

[0199] 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.

[0200] 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.

[0201] The above is a schematic scheme of a non-contact communication adjustment device according to this embodiment. It should be noted that the technical solution of this non-contact communication adjustment device and the technical solution of the non-contact communication adjustment method described above belong to the same concept. For details not described in detail in the technical solution of the non-contact communication adjustment device, please refer to the description of the technical solution of the non-contact communication adjustment method described above.

[0202] Based on the same idea, this specification also provides devices corresponding to the above methods in its embodiments.

[0203] Figure 10 A structural block diagram of a computing device 1000 provided according to an embodiment of this specification is shown.

[0204] The computing device 1000 includes:

[0205] Memory 1010 and processor 1020;

[0206] The memory 1010 is used to store computer programs / instructions, and the processor 1020 is used to execute the computer programs / instructions. When the computer programs / instructions are executed by the processor 1020, they implement the steps of the above-mentioned non-contact communication adjustment method or field distribution determination method.

[0207] Specifically, the components of the computing device 1000 include, but are not limited to, a memory 1010 and a processor 1020. The processor 1020 is connected to the memory 1010 via a bus 1030, and the database 1050 is used to store data.

[0208] The computing device 1000 also includes an access device 1040, which enables the computing device 1000 to communicate via one or more networks 1060. 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 1040 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.

[0209] In one embodiment of this specification, the above-described components of the computing device 1000 and Figure 10 Other components, not shown, can also be connected to each other, for example, via a bus. It should be understood that... Figure 10 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.

[0210] The computing device 1000 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 1000 can also be a mobile or stationary server.

[0211] The processor 1020 executes the computer instructions to implement the steps of the above-mentioned non-contact communication adjustment method or field distribution determination method.

[0212] The above is an illustrative scheme of a computing device according to this embodiment. It should be noted that the technical solution of this computing device belongs to the same concept as the technical solution of the above-mentioned non-contact communication adjustment method or field distribution determination method. For details not described in detail in the technical solution of the computing device, please refer to the description of the technical solution of the above-mentioned non-contact communication adjustment method or field distribution determination method.

[0213] 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 adjustment method or the field distribution determination method for contactless communication as described above.

[0214] 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 belongs to the same concept as the technical solution of the above-described non-contact communication adjustment method or field distribution determination method. 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 above-described non-contact communication adjustment method or field distribution determination method.

[0215] An embodiment of this specification also provides a computer program product, including a computer program / instructions, which, when executed by a processor, implement the steps of the above-described contactless communication adjustment method or field distribution determination method.

[0216] 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 belongs to the same concept as the technical solution of the above-described non-contact communication adjustment method or field distribution determination method. 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 above-described non-contact communication adjustment method or field distribution determination method.

[0217] 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 apparatus and device embodiments, 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, device and method provided in the embodiments of this specification are corresponding to each other, and therefore the apparatus and device 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 and device will not be repeated here.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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 regulating contactless communication, comprising: Acquire the radio frequency signal at the target location; The radio frequency signal includes at least one of the interference signal generated by the first contactless communication device at the target location or the radio frequency signal of the second contactless communication device in a desired direction and an undesired direction; the desired direction indicates the direction in which the second device is expected to perform contactless communication; the undesired direction indicates at least some directions other than the desired direction. Determine whether the signal strength of the radio frequency signal meets a preset requirement; the preset requirement is the ability to perform contactless communication. If the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated. The prompt message is used to prompt the addition of a shielding film at the first device or the second device. The prompt message includes at least one of the following: the location information of the shielding film to be added and the specification information of the shielding film to be added.

2. The method according to claim 1, wherein determining whether the signal strength of the radio frequency signal meets the preset requirements specifically includes: Determine whether the signal strength of the radio frequency signal is less than or equal to a first preset threshold; The first preset threshold is the interference threshold that the second device can withstand; If the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated. Specifically, if the signal strength of the radio frequency signal is greater than the first preset threshold, a prompt message is generated.

3. The method according to claim 1, wherein determining whether the signal strength of the radio frequency signal meets the preset requirements specifically includes: Determine whether the ratio of the signal strength of the first radio frequency signal of the second device in the desired direction to the signal strength of the second radio frequency signal of the second device in the undesired direction is greater than or equal to a second preset threshold. The second preset threshold represents the threshold at which the second device can perform contactless communication in the desired direction; If the signal strength of the radio frequency signal does not meet the preset requirements, a prompt message is generated, specifically including: If the ratio is less than the second preset threshold, a prompt message is generated.

4. The method according to claim 2, further comprising: If the signal strength of the radio frequency signal is less than or equal to the first preset threshold, then it is determined whether the ratio of the signal strength of the first radio frequency signal of the second device located at the target position in the desired direction to the signal strength of the second radio frequency signal of the second device in the undesired direction is greater than or equal to the second preset threshold. If the ratio is less than the second preset threshold, a prompt message is generated suggesting that a shielding layer be added to the second device in an undesirable direction.

5. The method according to any one of claims 1 to 4, wherein the prompting information includes information on the signal strength of the radio frequency signal; or, the location information includes at least one of the location at the first device, the location at the second device, and the location between the first device and the second device; and the specification information of the shielding film includes at least one of the following: model information, name information, shielding rate information, and light transmittance information.

6. The method according to any one of claims 1 to 4, further comprising: Based on the signal strength of the radio frequency signal and the shielding rate of each spare shielding film, determine the specifications of the target shielding film that can make the signal strength meet the preset requirements. The light transmittance of the target shielding film is greater than or equal to a preset light transmittance threshold. The generation of prompt information specifically includes: generating prompt information containing the specification information.

7. The method according to claim 6, wherein any one of the backup shielding films is a single-layer shielding film or a composite shielding film comprising multiple layers of shielding films; If any of the spare shielding films is a composite shielding film containing i layers of shielding film, then the shielding efficiency of the composite shielding film is determined as follows: ； in, r i t represents the reflectivity of the i-th layer of the shielding film; i R represents the transmittance of the i-th layer of the shielding film; i T represents the total reflectivity of the composite shielding film containing i layers of shielding film; i A represents the total transmittance of the composite shielding film containing i layers of shielding film; total This represents the absorption rate of the composite shielding film containing i layers of shielding film; SE T This indicates the shielding effectiveness of a composite shielding film containing i layers of shielding film; This represents the shielding efficiency of the composite shielding film containing i layers of shielding film; i is an integer greater than or equal to 2.

8. The method according to any one of claims 1 to 4, wherein acquiring the radio frequency signal at the target location specifically includes: Acquire the radio frequency signal sensed by the test antenna located at the target position; The step of determining whether the signal strength of the radio frequency signal meets the preset requirements specifically includes: The radio frequency signal is subjected to envelope detection processing to obtain a DC signal; Determine whether the signal strength of the DC signal meets the preset requirements.

9. The method according to claim 8, further comprising: The radio frequency signal is subjected to bandpass filtering to obtain a bandpass filtered signal in a preset frequency band; The bandpass filtered signal is amplified to obtain an amplified signal; The step of performing envelope detection processing on the radio frequency signal to obtain a DC signal includes: The amplified signal is subjected to envelope detection to obtain a DC signal.

10. The method according to any one of claims 1 to 4, wherein acquiring the radio frequency signal at the target location specifically includes: Obtain the field distribution information of the target device; The target device includes either the first device or the second device; The radio frequency signal at the target location is determined from the field distribution information.

11. The method according to claim 10, wherein obtaining the field distribution information of the target device specifically includes: Measure signal information at multiple points in the area where the target device is located; By using the signal information from the multiple points to adjust the simulated field distribution information, the actual field distribution information of the target device is obtained; The simulated field distribution information is obtained by simulating the target device using a simulation system.

12. The method according to claim 3 or 4, wherein the first radio frequency signal includes the signal with the greatest signal strength of the second device in the field distribution in the desired direction; and the second radio frequency signal includes the signal with the greatest signal strength of the second device in the field distribution in the undesired direction.

13. A method for determining a field distribution, comprising: Acquire the first signal information of multiple points in the area where the device to be measured is located; The first signal information is obtained by measuring the signal strength of the multiple points using a measuring tool; Obtain the simulated field distribution information of the device under test; The simulated field distribution information is obtained by simulating the device to be measured using a simulation system. Based on multiple first signal information, the simulated field distribution information is adjusted to obtain the actual field distribution information corresponding to the device under test; The actual field distribution information is used to determine the intensity of the radio frequency signal at the target location in order to perform the method of claim 1.

14. The method according to claim 13, wherein adjusting the simulated field distribution information based on a plurality of first signal information comprises: From the simulated field distribution information, select the second signal information of the simulated point corresponding to the plurality of points; Based on each of the first signal information and the second signal information, determine the mapping coefficients between simulation and actual measurement; Based on the mapping coefficients, the simulated field distribution information is fitted to obtain the actual field distribution information corresponding to the device to be measured.

15. The method according to claim 13, further comprising: Measurement probes are set at multiple points in the area where the device to be measured is located; Using the measurement probe, the first signal information at each of the points is determined.

16. A contactless communication device, the contactless communication device comprising a contactless communication module and a shielding film; the shielding film being determined by the method according to any one of claims 1 to 12.

17. A contactless communication adjustment device, comprising: The signal acquisition module is used to acquire the radio frequency signal at the target location; The radio frequency signal includes at least one of the interference signal generated by the first contactless communication device at the target location or the radio frequency signal of the second contactless communication device in a desired direction and an undesired direction; the desired direction indicates the direction in which the second device is expected to perform contactless communication; the undesired direction indicates at least some directions other than the desired direction. The judgment module is used to determine whether the signal strength of the radio frequency signal meets the preset requirements; the preset requirements are the requirements for enabling contactless communication. The prompting module is used to generate a prompting message if the signal strength of the radio frequency signal does not meet the preset requirements. The prompting message is used to prompt the addition of a shielding film at the first device or the second device. The prompting message includes at least one of the following: the location information of the shielding film to be added and the specification information of the shielding film to be added.

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 15.

19. A computer-readable storage medium storing computer instructions that, when executed by a processor, implement the steps of the method according to any one of claims 1 to 15.

20. A computer program product comprising a computer program / instructions that, when executed by a processor, implement the steps of the method according to any one of claims 1 to 15.

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