Self-powered near field communication code plate

Abstract

The embodiment of the invention discloses a self-powered near-field communication code card, compared with a near-field communication payment machine, the near-field communication code card is lighter in weight, low in cost, free of an external power supply, convenient to carry, deploy and use, and based on division cooperation of the two types of coils, the success rate of induction and near-field communication can be improved, and the code card is convenient to use. And near field communication and related services can be carried out more reliably and more efficiently. The near field communication code plate comprises a shell, a first coil, a second coil, a control chip and a photovoltaic cell, the photovoltaic cell supplies power to the first coil and the control chip; the control chip is used for controlling the first coil; the first coil is used for exciting terminal equipment close to the near-field communication code plate by utilizing energy brought by power supply of the photovoltaic cell under the control of the control chip so as to improve the signal strength of near-field communication of the terminal equipment; and the second coil performs near field communication with the terminal equipment and performs service information interaction through near field communication.

Description

[0001] This application is a divisional application of the invention patent application submitted to the China Patent Office on August 1, 2024, with application number 202411047101.4 and invention name "A self-powered near-field communication code card". The full text of the application is incorporated into this application by reference. Technical Field

[0002] The present invention relates to the field of near field communication technology, and in particular to a self-powered near field communication code card. Background Art

[0003] Near Field Communication (NFC) is an emerging technology. Devices using NFC technology can exchange data when they are close to each other. It is evolved from the integration of contactless radio frequency identification (RFID) and interconnection technology, integrating the functions of inductive card reader, inductive card and point-to-point communication on a single chip.

[0004] With the popularization of NFC-enabled smartphones, NFC technology is also being used more in the payment field. For example, merchants deploy near-field communication-based payment machines at checkout counters. Users can use NFC-enabled mobile phones to interact with near-field communication-based payment machines to make payments, which is simpler than scanning codes.

[0005] However, for some small businesses or even individual operators with no fixed business locations, it may not be convenient to deploy near-field communication-based payment machines, and the cost of near-field communication-based payment machines themselves is also relatively high.

[0006] Based on this, for NFC business scenarios such as payment based on near field communication, there is a need for a solution that is lower in cost, easy to deploy and use, and reliable. Summary of the invention

[0007] One or more embodiments of this specification provide a self-powered near-field communication code card to solve the following technical problem: For NFC business scenarios such as payment based on near-field communication, a solution with lower cost, convenient deployment and use, and reliability is required.

[0008] To solve the above technical problems, one or more embodiments of this specification are implemented as follows:

[0009] One or more embodiments of this specification provide a self-powered near-field communication code card, including a housing, a first coil, a second coil, a control chip, and a photovoltaic cell;

[0010] The photovoltaic cell supplies power to the first coil and the control chip;

[0011] The control chip controls the first coil;

[0012] The first coil, under the control of the control chip, uses the energy provided by the photovoltaic cell to stimulate the terminal device close to the near-field communication code card, so as to improve the signal strength of the near-field communication of the terminal device;

[0013] The second coil performs near field communication with the terminal device and exchanges business information through the near field communication.

[0014] Optionally, the photovoltaic cell indirectly supplies power to the first coil through the control chip.

[0015] Optionally, the control chip obtains the light intensity received by the photovoltaic cell;

[0016] According to the light intensity, one kind of service information is matched among a plurality of different service information, and is provided as target service information to the second coil for the near field communication.

[0017] Optionally, matching one type of service information from among a plurality of different service information as target service information according to the light intensity specifically includes:

[0018] Determining whether the light intensity is in a stable state;

[0019] If so, then according to the light intensity, one kind of business information is matched among a plurality of business information with different degrees of simplicity in processing logic as target business information, so as to improve the business processing efficiency in user discomfort scenarios.

[0020] Optionally, the control chip obtains the light intensity received by the photovoltaic cell;

[0021] According to the light intensity, determining whether a user is approaching the near field communication code card;

[0022] If yes, trigger the first coil to start trying to sense the terminal device;

[0023] Otherwise, the photovoltaic cell temporarily stops supplying power to the first coil.

[0024] Optionally, there are multiple groups of the second coils, which are dispersedly deployed in different areas in the near field communication code card;

[0025] The determining, according to the light intensity, whether a user is close to the near field communication code card specifically includes:

[0026] According to the distribution and change of the light intensity within the corresponding range in the space, determining whether there are multiple users approaching the near field communication code card;

[0027] If so, the photovoltaic cell is used to power at least one group of the second coils, so that the powered second coils can actively perform near field communication with a terminal device of at least one of the multiple users.

[0028] Optionally, there are multiple photovoltaic cells, and each group of the second coils has a corresponding photovoltaic cell;

[0029] The light-receiving surface of the photovoltaic cell is arranged to cater to the expected approach direction of the terminal device of the corresponding second coil.

[0030] Optionally, the first coil is an active coil, and the second coil is a passive coil.

[0031] Optionally, the first coil is movable;

[0032] The control chip detects the induction condition between the first coil and the terminal device;

[0033] The activity of the first coil is controlled according to the sensing condition, so as to improve the signal strength of the near-field communication of the terminal device through electromagnetic interference through the posture and / or position after the activity.

[0034] Optionally, there are one or more control chips;

[0035] The second coil obtains business information from at least one of the control chips, and provides the business information to the terminal device for reading through the near field communication.

[0036] Optionally, the first coils and the second coils are provided in multiple groups, respectively, to form multiple pairs of coil groups, and each pair of the coil groups includes a group of first coils and a group of second coils;

[0037] The plurality of pairs of coil groups are dispersedly deployed in different areas in the near field communication code card.

[0038] Optionally, in a deployment area of ​​each pair of the coil groups, the group of first coils contained therein are located on an inner side, and the group of second coils contained therein are located on an outer side.

[0039] Optionally, the first coil has one group and the second coil has multiple groups;

[0040] Among the multiple groups of the second coils, only one group of the second coils performs the near field communication with the terminal device this time.

[0041] Optionally, a group of the first coils is deployed in a middle area of ​​the near field communication code plate, and a plurality of groups of the second coils are dispersedly deployed in a surrounding area of ​​the middle area.

[0042] At least one of the above technical solutions adopted in one or more embodiments of this specification can achieve the following beneficial effects: providing a near-field communication code card that is lower in cost and more convenient to use than a payment machine based on near-field communication, in which two types of coils with different divisions of labor are deployed, namely a first coil and a second coil. The first coil is an active coil with power supply (powered by the photovoltaic cell of the near-field communication code card), which is mainly responsible for stimulating the terminal device close to the near-field communication code card to improve the signal strength of the near-field communication of the terminal device. The second coil can be a passive coil without power supply, which is mainly responsible for near-field communication with the terminal device to Realize business information interaction; thus, compared with the payment machine based on near-field communication, the near-field communication code card is lighter and less expensive, easy to carry, easy to deploy, and convenient to use, and based on the division of labor and cooperation between the above two types of coils, it helps to improve the success rate of induction and near-field communication, and also helps to conduct near-field communication and related services more reliably and efficiently; not only that, it also makes full use of the photovoltaic cell's ability to perceive ambient light, opens up more flexible services, and realizes efficient multi-user service scenarios without the cost of deploying additional corresponding sensors, which greatly enhances the actual value of the deployment of photovoltaic cells in the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A schematic diagram of the structure of a self-powered near field communication code card provided in one or more embodiments of this specification;

[0045] Figure 2 A schematic diagram of the working principle of a self-powered near field communication code card provided in one or more embodiments of this specification;

[0046] Figure 3 Another schematic diagram of the working principle of the self-powered near field communication code card provided in one or more embodiments of this specification;

[0047] Figure 4 A flowchart of a solution for enhancing the signal strength of near field communication of a terminal device through a near field communication code card provided in one or more embodiments of this specification;

[0048] Figure 5 A schematic flow chart of a business processing solution based on a photovoltaic cell in a near field communication code card provided in one or more embodiments of this specification;

[0049] Figure 6 A schematic flow chart of an adaptive power supply scheme for a first coil provided in one or more embodiments of this specification;

[0050] Figure 7 A flowchart of a power supply solution for a multi-user scenario provided in one or more embodiments of this specification;

[0051] Figure 8 A first detailed structural diagram of a self-powered near field communication code card provided for one or more embodiments of this specification;

[0052] Fig. 9 A second detailed structural diagram of a self-powered near field communication code card provided for one or more embodiments of this specification;

[0053] Fig.10 A third detailed structural diagram of a self-powered near-field communication code card provided in one or more embodiments of this specification. DETAILED DESCRIPTION

[0054] The embodiment of this specification provides a self-powered near field communication code card.

[0055] In order 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 in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0056] In response to the problems mentioned in the background technology, the applicant considers using a lighter NFC (i.e., near field communication) code card to replace the payment machine based on near field communication (usually similar to a POS machine, a QR code payment broadcasting machine), so that the user's smart phone, smart watch and other terminal devices can sense the NFC code card, and then interact with business information through near field communication, thereby reducing the cost of merchants accessing NFC capabilities. However, the scheme tried by the applicant at the beginning still has some problems in terms of convenience and reliability. The scheme includes: a near field communication coil is built into the near field communication code card, and auxiliary modules such as a control chip are used. The near field communication coil senses the near terminal device and then performs near field communication; and the actual test found that due to differences in the capabilities and working states of different terminal devices, and the operations of different users are also different, it may cause some terminal devices or some users to be difficult to achieve near field communication smoothly at one stroke, and may need to adjust the proximity distance, the posture of the terminal device, or the current front page of the terminal device for a second time, so that for users, it may bring a negative experience of unsmooth process and unreliability. Based on this, the applicant modified the solution and provided an updated near-field communication code card, physically split the coil and separated its functional responsibilities, and deployed them separately to complete the interaction process with the terminal device in coordination to improve the success rate and efficiency of near-field communication. Optionally, based on the capabilities of photovoltaic cells, new business control logic is deployed more flexibly to improve the scalability of NFC capabilities, which effectively breaks through the limitations of traditional uses of photovoltaic cells and can meet more potential needs of users while taking into account costs.

[0057] Based on this general idea, the solution of this application will be further described below.

[0058] Figure 1 A structural schematic diagram of a self-powered near-field communication code card provided for one or more embodiments of this specification, which can be used in NFC-related business scenarios such as near-field communication-based payment, NFC check-in, etc. Through the near-field communication code card, the relevant business code value (such as payment code, check-in address, payment amount, etc.) or other business information (such as preferential information, etc.) can be provided to the nearby terminal device through the near-field communication interaction method to complete the target business.

[0059] Figure 1 The near field communication code card (also referred to as: NFC code card) at least includes a housing 102, a first coil 104, a second coil 106, a control chip 108, and a photovoltaic cell 110;

[0060] The photovoltaic cell 110 supplies power to the first coil 104 and the control chip 108;

[0061] The control chip 108 controls the first coil 104;

[0062] The first coil 104, under the control of the control chip 108, uses the energy provided by the photovoltaic cell to stimulate the terminal device close to the near-field communication code card, so as to improve the signal strength of the near-field communication of the terminal device;

[0063] The second coil 106 performs near field communication with the terminal device and exchanges business information through the near field communication.

[0064] Terminal devices include mobile terminal devices that support NFC functions, such as smartphones, smart watches, other wearable devices, portable game consoles, etc. that support NFC functions.

[0065] The shell 102 can be made of either flexible or hard materials as required, and plastic can generally be selected. The shape of the shell 102 can be flat and compact, which can conform to the general appearance of the public's "cards". In this way, it is more convenient and helps to reduce costs. Other components can be accommodated in the shell 102. Of course, some components can also be deployed on the shell. The former method has a higher degree of integration and helps to improve the durability of the near field communication code card.

[0066] The near-field communication code card may include one or more control chips, that is, in addition to the control chip 108, there may be other control chips, and the control chip 108 itself may also have one or more. In the case of multiple control chips, a control architecture of a master control combined with multiple sub-controls may be adopted, or various more independent distributed control architectures may be adopted.

[0067] Photovoltaic cells 110, including devices that directly convert light energy into electrical energy through photoelectric effect or photochemical effect, can convert light in the environment into electrical energy, and then drive some modules in the near-field communication code sign that require power supply, so that the deployment and laying of near-field communication code signs can get rid of the limitations of power supply, which helps to improve its applicable scenarios and is especially friendly to small merchants.

[0068] It should be noted that the present application not only utilizes the power supply capability of the photovoltaic cell 110, but also further utilizes the ability of the photovoltaic cell 110 to sense ambient light, ingeniously achieving more special purposes, which will be described in detail later.

[0069] The first coil 104 represents a type of coil used in the present application, and may specifically include one or more coils; in the case of multiple coils, they may be specifically deployed as one or more groups of coils, each group of coils may include one or more coils.

[0070] The first coil 104 mainly works when powered, so it can actively sense the terminal device close to the near field communication code card, and the first coil 104 is used as an active coil. The first coil 104 can be powered by the photovoltaic cell 110 of the near field communication code card itself, so that it is more convenient to deploy and make the near field communication code card easier to use.

[0071] The first coil 104 uses the power brought by the power supply to actively sense the approaching terminal device and stimulate the terminal device in one or more ways to improve the signal strength of the near-field communication of the terminal device. The methods adopted may, for example, prompt the terminal device to switch the working mode, or positively strengthen the signal of the terminal device through electromagnetic interference, or directly instruct the terminal device based on signal instructions, etc. Preferably, a method of transmitting data without near-field communication with the terminal device can be adopted, which helps to design and implement the first coil 104 more simply and at low cost, and helps to deploy more first coils 104 when necessary, so as to be able to more reliably stimulate the surrounding terminal devices.

[0072] The second coil 106 represents another type of coil used in the present application, and may specifically include one or more coils; in the case of multiple coils, they may be specifically deployed as one or more groups of coils, each group of coils may include one or more coils.

[0073] The second coil 106 mainly works without power supply, and is mainly responsible for performing near field communication with a terminal device close to the near field communication code card. The second coil 104 can be mainly used as a passive coil.

[0074] It can be seen that, in terms of the cooperation of the above two types of coils, the first coil 104 is mainly used to assist the second coil 106 to more efficiently and reliably perform near-field communication with the terminal device. By reasonably deploying the relative positions of the first coil 104 and the second coil 106, the first coil 104 has a higher probability of being able to sense the terminal device more widely and more in advance, so as to assist the second coil 106 in advance. Further, in the case where there are multiple or multiple groups of second coils 106, they can be deployed in a dispersed manner. The second coil 106 can cooperate with the control chip 108 based on the induction situation with the near-field communication code card to assist in deciding which one or which group of second coils 106 is more suitable (for example, closer to the terminal device or more idle, etc.) for near-field communication with the terminal device, and then the second coil 106 will perform the specific execution.

[0075] When the second coil 106 is used as a passive coil, the terminal device (e.g., a typical mobile phone supporting the NFC function) can work as a card reader, and when business information is exchanged through near field communication, the required business information is read through the second coil 106, such as the target business code value (collection code, payment amount, etc.), authorization certificate (electronic ticket, etc.), etc. The second coil 106 can also be connected to a corresponding control chip to perform operations such as reading and writing business information.

[0076] In this way, a better near-field communication experience can be achieved through a combination of passive and active methods to carry out payment and other services; taking the mobile phone as an example, the light in the space received by the photovoltaic cell is converted into electrical energy, and this energy can be used to drive the active antenna and control chip to enhance the near-field communication signal of the mobile phone, thereby improving the success rate and speed of the mobile phone's sensing of the near-field communication code card; there is no need to deploy additional corresponding supporting equipment for the near-field communication code card, which is less costly and helps to make better use of social resources.

[0077] It should be noted that the second coil 106 is exemplarily connected to the control chip 108 (in the case of multiple control chips 108, it may refer to at least one of them). Of course, the second coil 106 may also be connected to other control chips other than the control chip 108. As mentioned above, the second coil 106 may be unpowered, and the control chip connected thereto may not necessarily need to be powered. In the case of no power supply, the control chip may work by using the induced current when the terminal device senses the second coil 106, for example, sending corresponding business information to the second coil so that the terminal device can read it.

[0078] pass Figure 1 The solution in the present invention provides a near-field communication code card that is lower in cost and more convenient to use than a payment machine based on near-field communication, in which two types of coils with different divisions of labor are deployed, namely a first coil and a second coil. The first coil is an active coil with power supply (powered by the photovoltaic cell of the near-field communication code card), which is mainly responsible for stimulating the terminal device close to the near-field communication code card to improve the signal strength of the near-field communication of the terminal device. The second coil can be a passive coil without power supply, which is mainly responsible for near-field communication with the terminal device to realize business information interaction. In this way, compared with a payment machine based on near-field communication, the near-field communication code card is lighter and less expensive, easy to carry, easy to deploy, and convenient to use. Moreover, based on the division of labor and cooperation between the above two types of coils, it helps to improve the success rate of induction and near-field communication, and also helps to conduct near-field communication and related services more reliably and efficiently.

[0079] based on Figure 1 This specification also provides some specific implementation plans and extension plans of the scheme, which will be described below.

[0080] According to the above description, the working principle of the near field communication code card based on photovoltaic cells for self-powering is described as follows. Figure 2 , Figure 3 .

[0081] Figure 2 A schematic diagram of the working principle of a self-powered near field communication code card provided in one or more embodiments of this specification. Figure 2 In the embodiment, the terminal device is specifically a mobile phone, the first coil is called the B group coil, which is an active coil, the second coil is called the A group coil, which is a passive coil, and each group coil has one or more coils.

[0082] The working principle includes: the photovoltaic cell converts the light received from the environment into electrical energy, which is used to power the control chip and the group B coil; when the user (for example, a consumer) brings a mobile phone that supports the NFC function close to the near-field communication code card, the group B coil senses the mobile phone, and based on the energy obtained from the power supply, stimulates the mobile phone, thereby increasing the signal strength of the near-field communication of the mobile phone. After that, the mobile phone can more easily sense the group A coil to establish near-field communication, so that the group A signal can send a corresponding signal to the control chip, and the control chip sends the corresponding business information to the group A coil in response. Then, the mobile phone can read the business information through near-field communication with the group A coil, and then use the business information to perform business.

[0083] Figure 3 Another working principle diagram of a self-powered near field communication code card provided in one or more embodiments of this specification. Figure 3 In the example, two control chips are used for decentralized control or interaction, where control chip A is responsible for the above-mentioned business information interaction with coil group A, and control chip B is responsible for controlling coil group B. Figure 2 The principle is similar and will not be repeated here.

[0084] It should be noted that group A coils and group B coils can each have one or more groups, and the control chip can also adopt other deployment architectures, which will be explained with examples later.

[0085] As mentioned above, there are many solutions to improve the signal strength of the near-field communication of the terminal device through the assistance of the first coil. For ease of understanding, the following is combined with Figure 4 , and explain each of the optional solutions separately.

[0086] Figure 4 A flowchart of another enhanced processing solution for near field communication signal strength of a terminal device through a near field communication code card provided in one or more embodiments of this specification.

[0087] Figure 4The process in includes the following steps:

[0088] S402: The first coil, in a powered state, actively attempts to sense terminal devices around the near field communication code card.

[0089] S404: The control chip detects an induction condition between the first coil and the terminal device.

[0090] S406: According to the induction condition, control the first coil to improve the signal strength of the near field communication of the terminal device through electromagnetic interference.

[0091] By controlling parameters such as the signal frequency of the first coil, it is possible to enhance the electromagnetic interference for the terminal device, so that the peak of the signal interference of the near-field communication of the terminal device is increased, thereby achieving enhanced intensity.

[0092] S408: If the first coil is movable, controlling the first coil to move according to the sensing condition, so as to improve the signal strength of the near-field communication of the terminal device through electromagnetic interference through the posture and / or position after the movement.

[0093] Another scheme is also given as an example. The first coil, when powered, actively tries to sense the terminal devices around the near-field communication code card; the first coil stimulates the terminal device close to the near-field communication code card, so that if the signal strength of the near-field communication of the terminal device is in the insufficient power consumption mode, the first coil exits the insufficient power consumption mode and senses with the second coil with a higher signal strength, thereby performing near-field communication.

[0094] The underpower mode may refer to the state in which the terminal device operates in the card emulation mode of near field communication. In this case, the terminal device simulates itself as a card and waits for the card reader to read it through near field communication. Therefore, the corresponding signal strength is low, and thus, near field communication with the second coil may not be smoothly performed. Therefore, the terminal device may exit the underpower mode by stimulating the first coil, for example, switching to the card reader mode, so that the signal strength of the near field communication will be improved.

[0095] According to a similar principle, the low power consumption mode can also be pre-customized to mean that the current near-field communication signal strength of the terminal device is low enough, for example, lower than the set threshold or in other specified states (for example, the related business is in background standby, or is in low power mode resulting in signal restriction, etc.).

[0096] In one or more embodiments of the present specification, the first coil may be fixed or may be designed to be movable. In the case of being movable, the first coil may be controlled to move to adjust the posture and / or position, thereby possibly affecting the antenna signal transmission position or direction, thereby facilitating a more flexible and reliable state of electromagnetic interference enhancement.

[0097] In some of the previous examples, photovoltaic cells are only used as a power source. This application further considers using the photovoltaic cells' ability to sense ambient light to develop more flexible businesses and realize efficient multi-user service scenarios. In this case, there is no need to spend the cost to deploy additional corresponding sensors, which can greatly enhance the actual value of the deployment of photovoltaic cells in the solution.

[0098] In one or more embodiments of this specification, when photovoltaic cells are used for power supply, the light in the space environment will change, and the photovoltaic cells can sense such changes. Therefore, based on this feature, it is considered to use photovoltaic cells and corresponding control chips to perform adaptive control to select the service to be performed among multiple optional services for this near-field communication without the need for immediate intervention by users (such as cashiers or consumers, etc.). In this way, the relatively fixed limitations of services can be broken through, and multiple services can be flexibly expanded, which helps to improve user experience.

[0099] Based on this idea, one or more embodiments of this specification provide a flow chart of a business processing solution based on photovoltaic cells in near field communication code cards, see Figure 5 .

[0100] Figure 5 The process in includes the following steps:

[0101] S502: The control chip obtains the light intensity received by the photovoltaic cell.

[0102] The light intensity received by multiple different areas on the photovoltaic cell can be specifically distinguished. Currently, multiple photovoltaic cells can also be deployed in a dispersed manner, so as to better detect the distribution of light intensity in different areas.

[0103] S504: Match one kind of service information from a plurality of different service information according to the light intensity, as target service information, and provide it to the second coil for the near field communication.

[0104] Different business information can represent different types of business, such as payment business, discount collection business, check-in business, electronic ticket business, game business, etc., or can also represent different sub-businesses in the same type of business. Due to changes in the surrounding environment or the intervention of the surrounding environment, the light received by the photovoltaic cells will change accordingly, and the distribution of the obtained light intensity will be different. The corresponding business information can be selected by matching the distribution, so that different businesses can be distinguished more accurately and finely; of course, it is also easier to match business information according to parameters such as individual values ​​of light intensity (for example, dividing one or more intensity thresholds for size comparison); and so on.

[0105] Furthermore, the correspondence between the changes in light intensity and different services can be customized, or more specifically consider what kind of environmental conditions (for example, when there are many people around, the changes may be exacerbated) lead to a certain change in light intensity, and then establish a correspondence between this change and the business related to the environmental condition (which may be a discount redemption business, which helps to achieve efficient and centralized discount distribution). This is more logical and easier for users to understand, which in turn helps to achieve more positive results.

[0106] It should be noted that Figure 5 The solution is particularly suitable for scenarios where users' needs or requirements for the business are not clear enough or even not clear at all. It helps users get in touch with new businesses, helps to bring more traffic opportunities to different businesses, and is easy to gain users' understanding.

[0107] Furthermore, when matching business information, it is possible to determine whether the light intensity is in a stable state. If it is not stable enough, you can wait temporarily. If it is stable, you can match one type of business information as the target business information among a variety of business information with different levels of processing logic (which can be for the same business or different businesses) according to the degree of light intensity, so as to improve business processing efficiency in scenarios where users are uncomfortable (for example, when the light intensity is too high, perhaps outdoors, you can choose business information with simpler processing logic to match as the target business information, so as to adaptively reduce auxiliary business logic and avoid causing user disgust).

[0108] In one or more embodiments of the present specification, the sensitivity of photovoltaic cells to ambient light is considered to be used to determine surrounding interference conditions, such as interference caused by a target user.

[0109] Figure 6 A schematic flow chart of an adaptive power supply scheme for a first coil provided for one or more embodiments of this specification.

[0110] Figure 6The process in includes the following steps:

[0111] S602: The control chip obtains the light intensity received by the photovoltaic cell.

[0112] S604: judging whether there is a user (eg, a consumer as a target user) approaching the near field communication code card according to the light intensity.

[0113] When a user approaches the NFC code card, the ambient light may be blocked, and accordingly, the light intensity received by the photovoltaic cell may suddenly drop. Based on the auxiliary judgment of the photovoltaic cell, there is no need to deploy additional sensors such as TOF distance sensors, which is easy to integrate and can reduce costs.

[0114] It should be noted that the judgment here can also specifically distinguish different modes of surrounding interference, such as whether it is a passer-by type, or a person is approaching the NFC device, and whether it is caused by the store owner, etc. These interference modes can be identified based on the specific change pattern of light intensity, and then the final judgment result can be obtained.

[0115] S606: If yes, trigger the first coil to start trying to sense the terminal device.

[0116] The first coil can be powered only when it is needed to work, otherwise it can be kept in an idle state. In addition, even if the first coil is continuously powered on, the control chip can further decide how to stimulate the first coil, how much power to use, whether it is necessary to send a certain signal or specific instruction through the first coil (for example, instructing the terminal device to automatically jump to a certain page, requesting pre-authorization from the terminal device, etc.), etc., based on the judgment result in step S604, so that the first coil can better serve the terminal device while taking into account the cost and the rationality of the utilization of the device processing resources.

[0117] S608: Otherwise, the photovoltaic cell temporarily stops supplying power to the first coil.

[0118] When no user is approaching, the first coil may not need to be excited, and thus, it may not be powered temporarily. Alternatively, the first coil may be placed in a passive standby state when powered.

[0119] Further, based on the above idea of ​​using photovoltaic cells to assist in sensing users, one or more embodiments of this specification provide a flow chart of a power supply solution for a multi-user scenario, see Figure 7 .

[0120] Figure 7 The process in includes the following steps:

[0121] S702: judging whether there are multiple users approaching the near field communication code card according to the distribution and change of the light intensity within the corresponding range in the space, wherein the second coils have multiple groups and are dispersedly deployed in different areas in the near field communication code card.

[0122] S704: If so, the photovoltaic cell is used to power at least one group of the second coils (at least one group of the second coils may not be powered and still work in the previous manner), so that the powered second coils can actively perform near field communication with a terminal device of at least one of the multiple users.

[0123] In this case, at least one set of second coils can actively perform near field communication with one terminal device, and at least another set of second coils can passively perform near field communication with another terminal device. In this way, the two terminal devices can be in different working modes (for example, one is a card reader mode, the other is a card emulation mode, etc.), which helps to more reliably perform multiple different services in parallel, thereby helping to serve more users at the same time through one near field communication code card.

[0124] In one or more embodiments of the present specification, there may be multiple photovoltaic cells, for example, each group of second coils has a corresponding photovoltaic cell. The light-receiving surface of the photovoltaic cell may be arranged to cater to the expected approach direction of the terminal device of the corresponding second coil (for example, the plane where the photovoltaic cell is located is not parallel to the plane where the entire near-field communication code card is located, but has a certain inclination angle (for example, 5 degrees to 30 degrees) so as to be closer to vertical with the expected approach direction), so as to facilitate more accurate perception of light changes caused by the user approaching to prepare for business.

[0125] In practical applications, the specific deployment methods of the modules of the NFC code card are various. Intuitively, several exemplary detailed structures of the NFC code card are provided below as references for specific implementation plans. Figure 8 to Figure 10 For ease of description, we use Figure 2 and Figure 3 The module name in .

[0126] In one or more embodiments of the present specification, there are multiple groups of first coils and second coils respectively, forming multiple pairs of coil groups, each pair of coil groups includes a group of first coils and a group of second coils; the multiple pairs of coil groups are dispersedly deployed in different areas in the near-field communication code card; in the deployment area of ​​each pair of coil groups, a group of first coils contained therein is on the inside, and a group of second coils is on the outside, so that it is easier to excite the first coil in a directional and concentrated manner, which helps to sense the terminal device in advance, and it is easier for the corresponding second coil to establish near-field communication more smoothly; photovoltaic cells can be deployed in appropriate areas of the near-field communication code card, such as concentrated in the idle area on the outside. For example, see Figure 8 , Fig. 9 .

[0127] Figure 8 A first detailed structural diagram of a self-powered near-field communication code card provided in one or more embodiments of this specification.

[0128] exist Figure 8 In the , a control chip unified control solution is adopted, and all the A group coils, B group coils and photovoltaic cells are directly connected to the control chip. A total of 4 pairs of coil groups are deployed, which are distributed in the upper left, lower left, upper right and lower right areas. The control chip is deployed in the middle area to facilitate the connection with other modules. The photovoltaic cells are deployed in the lower area on the outside.

[0129] Fig. 9 A second detailed structural diagram of a self-powered near-field communication code card provided in one or more embodiments of this specification.

[0130] Compared to Figure 8 , Fig. 9 The main difference of the structure is that two control chips are used for separate control. Among them, control chip A is connected to all the A group coils, and control chip B is connected to all the B group coils and photovoltaic cells.

[0131] In one or more embodiments of this specification, there is one group of first coils and multiple groups of second coils; among the multiple groups of second coils, only one group of second coils can perform near field communication with the terminal device; one group of first coils is deployed in the middle area of ​​the near field communication code card, and multiple groups of second coils are dispersedly deployed in the surrounding area of ​​the middle area. For example, see Fig.10 .

[0132] Fig.10 A third detailed structural diagram of a self-powered near-field communication code card provided in one or more embodiments of this specification.

[0133] exist Fig.10In the solution, a control chip master control solution is adopted. However, there is only one group of B coils, which is in the middle and serves the surrounding area uniformly. It is highly efficient and power-saving. For example, according to the induction situation with the mobile phone, it can select a group of A coils that is relatively closer to the mobile phone from the 4 groups of A coils around it for subsequent near-field communication service information interaction. In this case, through reasonable control, other A coils can be allowed to interact with other mobile phones for near-field communication service information at the same time. In this way, it can serve multiple users at the same time. When multiple users have the same service, it can effectively improve service efficiency.

[0134] Based on the above exemplary detailed structural presentations, more deployment schemes can be derived, which may also achieve corresponding positive effects and can be implemented and used according to actual needs.

[0135] In the 1990s, improvements to a technology could be clearly distinguished as hardware improvements (for example, improvements to the circuit structure of diodes, transistors, switches, etc.) or software improvements (improvements to the method flow). However, with the development of technology, many improvements to the method flow today can be regarded as direct improvements to the hardware circuit structure. Designers almost always obtain the corresponding hardware circuit structure by programming the improved method flow into the hardware circuit. Therefore, it cannot be said that an improvement in a method flow cannot be implemented using a hardware entity module. For example, a programmable logic device (PLD) (such as a field programmable gate array (FPGA)) is such an integrated circuit whose logical function is determined by the user's programming of the device. Designers can "integrate" a digital system on a PLD by programming it themselves, without having to ask a chip manufacturer to design and produce a dedicated integrated circuit chip. Moreover, nowadays, instead of manually making integrated circuit chips, this kind of programming is mostly implemented by "logic compiler" software, which is similar to the software compiler used when developing and writing programs, and the original code before compilation must also be written in a specific programming language, which is called hardware description language (HDL). There is not only one HDL, but many kinds, 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, RHDL (Ruby Hardware Description Language), etc. The most commonly used ones are VHDL (Very-High-Speed ​​Integrated Circuit Hardware Description Language) and Verilog. Those skilled in the art should also know that it is only necessary to program the method flow slightly in the above-mentioned hardware description languages ​​and program it into the integrated circuit, and then it is easy to obtain the hardware circuit that implements the logic method flow.

[0136] The controller can be implemented in any appropriate manner, for example, the controller can take the form of a microprocessor or processor and a computer-readable medium storing a computer-readable program code (such as software or firmware) that can be executed by the (micro)processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320. The memory controller can also be implemented as part of the control logic of the memory. Those skilled in the art also know that in addition to implementing the controller in a purely computer-readable program code manner, the controller can be implemented in the form of a logic gate, a switch, an application-specific integrated circuit, a programmable logic controller, and an embedded microcontroller by logically programming the method steps. Therefore, this controller can be considered as a hardware component, and the devices included therein for implementing various functions can also be regarded as structures within the hardware component. Or even, the devices for implementing various functions can be regarded as both software modules for implementing the method and structures within the hardware component.

[0137] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0138] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0139] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Therefore, the embodiments of this specification may be in the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the embodiments of this specification may be in the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0140] This specification is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of this specification. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0141] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0142] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0143] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0144] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0145] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules 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 technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0146] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity or device including the element.

[0147] This specification may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. This specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

[0148] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0149] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0150] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A self-powered near field communication code card for merchants, the near field communication code card comprising a housing, a control chip, a photovoltaic cell, a first coil and / or a second coil; The photovoltaic cell supplies power to the control chip; The control chip obtains the light intensity received by the photovoltaic cell; According to the light intensity, one kind of service information is matched among a plurality of different service information as target service information for near field communication based on the first coil and / or the second coil.

2. The near field communication code card according to claim 1, wherein the first coil, under the control of the control chip, utilizes the energy provided by the photovoltaic cell to stimulate the terminal device close to the near field communication code card, so as to improve the signal strength of the near field communication of the terminal device; The second coil performs near field communication with the terminal device and exchanges business information through the near field communication.

3. The near field communication code card according to claim 1 or 2, wherein the photovoltaic cell indirectly supplies power to the first coil through the control chip.

4. The near field communication code card according to claim 1 or 2, wherein according to the light intensity, one kind of business information is matched among a plurality of different business information as the target business information, specifically comprising: Determining whether the light intensity is in a stable state; If so, then according to the light intensity, one kind of business information is matched among a plurality of business information with different degrees of simplicity in processing logic as target business information, so as to improve the business processing efficiency in user discomfort scenarios.

5. The near field communication code card according to claim 1 or 2, wherein the control chip obtains the light intensity received by the photovoltaic cell; According to the light intensity, determining whether a user is approaching the near field communication code card; If yes, trigger the first coil to start trying to sense the terminal device; Otherwise, the photovoltaic cell temporarily stops supplying power to the first coil.

6. The near field communication code card according to claim 5, wherein the second coil has multiple groups, which are dispersedly deployed in different areas in the near field communication code card; The determining, according to the light intensity, whether a user is close to the near field communication code card specifically includes: According to the distribution and change of the light intensity within the corresponding range in the space, determining whether there are multiple users approaching the near field communication code card; If so, the photovoltaic cell is used to power at least one group of the second coils, so that the powered second coils can actively perform near field communication with a terminal device of at least one of the multiple users.

7. The near field communication code card as claimed in claim 5, wherein there are a plurality of photovoltaic cells, and each group of the second coils has a corresponding photovoltaic cell; The light-receiving surface of the photovoltaic cell is arranged to cater to the expected approach direction of the terminal device of the corresponding second coil. 8 . The near field communication code card according to claim 1 or 2 , wherein the first coil is an active coil and the second coil is a passive coil.

9. The near field communication code card according to claim 1 or 2, wherein the first coil is movable; The control chip detects the induction condition between the first coil and the terminal device; The activity of the first coil is controlled according to the sensing condition, so as to improve the signal strength of the near-field communication of the terminal device through electromagnetic interference through the posture and / or position after the activity.

10. The near field communication code card according to claim 1 or 2, wherein the control chip has one or more; The second coil obtains business information from at least one of the control chips, and provides the business information to the terminal device for reading through the near field communication.

11. The near field communication code card according to claim 1 or 2, wherein the first coil and the second coil are respectively provided in multiple groups to form multiple pairs of coil groups, and each pair of the coil groups includes a group of first coils and a group of second coils; The plurality of pairs of coil groups are dispersedly deployed in different areas in the near field communication code card.

12. The near field communication code tag according to claim 11, wherein in a deployment area of ​​each pair of the coil groups, the group of first coils contained therein is located on the inner side, and the group of second coils contained therein is located on the outer side.

13. The near field communication code card according to claim 1 or 2, wherein the first coil has one group and the second coil has multiple groups; Among the multiple groups of the second coils, only one group of the second coils performs the near field communication with the terminal device this time. 14 . The near field communication code card as claimed in claim 13 , wherein a group of the first coils is disposed in a middle area of ​​the near field communication code card, and a plurality of groups of the second coils are dispersedly disposed in a surrounding area of ​​the middle area.

Images