A method and apparatus for guiding NFC active communication and an electronic device

Abstract

The application provides a guiding NFC active communication method and device and electronic equipment, which are used for a first device, the first device is provided with an NFC tag, and the method comprises the following steps: acquiring distance information of a second device and the first device, the second device comprising a device for reading the NFC tag; when the distance information is less than a preset threshold, a detection signal is generated; the detection signal is used for guiding the second device to enter an active communication mode, so as to increase an NFC detection amplitude of the second device; when a communication request sent by the second device is received, information is sent to the second device through the NFC tag, and communication is completed. The first device actively guides the second device to enter the communication mode, so that the problem that the NFC tag reading fails due to the fact that the second device cannot automatically enter the active communication mode due to its own reasons can be avoided, the first device can be more easily read, and the tag reading success rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of NFC communication technology, and in particular to a method and device for guiding NFC active communication and electronic equipment. BACKGROUND

[0002] With the development of technology, the interaction between devices is more diversified. In the related art, an NFC (Near Field Communication, a short-range high-frequency radio technology) tag can be added to some electronic devices to serve as an NFC tag device; and information interaction can be achieved by reading the NFC tag in the NFC tag device through other smart electronic devices.

[0003] However, in the related art, based on the characteristics of NFC near field communication technology, when the other smart electronic devices read the NFC tag in the NFC tag device, there are problems of limited tag reading distance and low reading success rate, which affect the user experience. SUMMARY

[0004] The present application solves the technical problem of providing a method and device for guiding NFC active communication and electronic equipment to enhance the stability of communication between NFC devices, improve the communication distance and reading success rate of NFC, and optimize the user experience.

[0005] A method for guiding NFC active communication is provided for a first device, wherein the first device is provided with an NFC tag, and the method comprises:

[0006] obtaining distance information between a second device and the first device, wherein the second device comprises a device for reading the NFC tag;

[0007] generating a detection signal when the distance information is less than a preset threshold; the detection signal is used to guide the second device to enter an active communication mode to increase the NFC detection amplitude of the second device;

[0008] when receiving a communication request sent by the second device, sending information to the second device through the NFC tag to complete communication.

[0009] To solve the above technical problems, another technical solution adopted by the present application is:

[0010] A device for guiding NFC active communication is provided for a first device, wherein the first device is provided with an NFC tag, and the device comprises an information acquisition module, a signal generation module and a communication management module.

[0011] The information acquisition module is configured to obtain distance information between a second device and the first device, wherein the second device comprises a device for reading the NFC tag.

[0012] The signal generation module is configured to generate a detection signal when the distance information is less than a preset threshold, and the detection signal is used to guide the second device to enter an active communication mode to increase the NFC detection amplitude of the second device.

[0013] The communication management module is configured to send information to the second device through the NFC tag to complete communication when receiving a communication request sent by the second device.

[0014] To solve the above technical problems, the present application adopts another technical solution:

[0015] An electronic device includes a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the above-mentioned NFC active communication guiding method when executing the computer program.

[0016] The present application has the beneficial effects that the distance information between the first device and the second device is obtained, and when the distance between the two is less than a preset threshold, a detection signal is generated by the first device, and the detection signal is used to guide the second device to enter an active communication mode to increase the NFC detection amplitude of the second device. The second device is a device for reading the NFC tag, so when the second device is in the active communication mode, the second device can read the NFC tag of the first device more quickly or easily. When the first device receives a communication request from the second device, the first device and the second device complete communication interaction through the NFC tag. Compared with the traditional NFC information reading mode, the present application generates a detection signal by the first device to guide the second device to enter an active communication mode when the distance between the first device and the second device is less than a preset threshold, so that the NFC tag of the first device can be read more easily and stably by the second device, and the reading distance of the NFC tag can be improved by setting the preset threshold, effectively improving the reading efficiency of the NFC information. In addition, the second device is actively guided by the first device to enter the communication mode, which can avoid the problem of NFC tag reading failure caused by the second device failing to automatically enter the active communication mode due to its own standby or other reasons, so that the first device can be read more easily, and the reading success rate of the tag is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A step flowchart of the NFC active communication guiding method provided by the embodiment of the present application is provided.

[0018] Figure 2 A program flowchart of the NFC active communication guiding method provided by the embodiment of the present application is provided.

[0019] Figure 3 A module schematic diagram of the first device and the second device provided for the embodiment of the present application;

[0020] Figure 4 A structure schematic diagram of the guiding NFC active communication device provided for the embodiment of the present application;

[0021] Figure 5 A structure schematic diagram of the electronic device provided for the embodiment of the present application;

[0022] Label explanation:

[0023] 200, a guiding NFC active communication device; 201, an information acquisition module; 202, a signal generation module; 203, a communication management module; 300, an electronic device; 301, a memory; 302, a processor; 400, a first device; 401, an NFC tag; 401, a distance sensor; 403, an induction coil; 404, an antenna; 500, a second device. DETAILED DESCRIPTION

[0024] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects clearer and more apparent, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0025] In the following description, specific details are set forth in order to provide a thorough understanding of embodiments of the application. However, persons of ordinary skill in the art will appreciate that embodiments of the application can be practiced without the specific details, other embodiments, and in other instances, well-known systems, structures, circuits, and methods have not been described in detail in order not to obscure the application.

[0026] It should be understood that when used in the specification and the appended claims of the present application, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or sets thereof.

[0027] Reference within the specification of this application to "one embodiment" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in some embodiments" in various places within specified descriptions in this specification are not necessarily all referring to the same embodiment, however, but can refer to one or more but not all embodiments. The terms "including," "comprising," "featuring," and variations thereof are meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless otherwise noted, the terms "including" and "comprising" are used in an inclusive sense, and should be interpreted as meaning "including, but not limited to."

[0028] With the development of mobile communication technology and wireless communication technology, NFC technology (Near Field Communication, a short-range high-frequency radio technology) has become one of the important means for mobile payment and data transmission of mobile phones. The application scenarios of NFC technology are becoming more and more extensive, involving mobile payment, access control cards, public transportation cards and other fields.

[0029] In the related art, some electronic devices can add NFC (Near Field Communication, a short-range high-frequency radio technology) tags to act as NFC tag devices; and information interaction can be realized by reading the NFC tags in the NFC tag devices through other smart electronic devices.

[0030] However, in the related art, based on the characteristics of NFC near field communication technology, when other smart electronic devices read the NFC tags in the NFC tag devices, there are problems of limited tag reading distance and low reading success rate, which affect the user experience.

[0031] In the related art, NFC tags are usually read in a way of being passively waiting for a terminal such as a mobile phone or a reader for reading NFC tags to perform detection polling. When a user does not know the specific location of an NFC tag, the terminal for reading the NFC tag cannot accurately approach the NFC tag, which can cause the problem of terminal reading tag failure. Or, when the terminal for reading the NFC tag reads the NFC tag in an incorrect way, it can also often cause the problem of terminal reading tag failure. In particular, when designing a tag circuit for a terminal for reading an NFC tag, due to the application strategy and other reasons in the system of the terminal, the terminal can be difficult to read the NFC tag, thereby causing the problems of reading failure or low reading efficiency.

[0032] For example, some mobile terminal operating systems reduce device power consumption by controlling the mobile terminal to quickly enter a sleep communication mode, i.e., a low power card detection (LPCD) mode. In this mode, the mobile terminal actively reduces the NFC detection amplitude; at this time, the mobile terminal needs to be very close to the NFC tag, so that the mobile terminal produces a larger load impedance change at a frequency of 13.56 MHz, so that the NFC module in the mobile terminal exits the LPCD mode, and thus successfully reads the NFC tag. This communication mode of the NFC tag has the problems of limited tag reading distance and low reading success rate, affecting user experience.

[0033] To solve the above problems, the present application provides a guided NFC active communication method, device and electronic equipment. It should be noted that the first device of the present application is a device provided with an NFC tag, which can be a powered device provided with an NFC tag. The first device can be applied to the fields of mobile payment, access control card, public transportation card, etc. For example, the NFC device of the present application can be a cash register, a cash register sound box, a POS machine, etc. The second device of the present application is a device for reading an NFC tag, such as a mobile phone or a card reader with NFC reading function.

[0034] The guided NFC active communication method of the present application will be described in detail below.

[0035] Please refer to Figure 1 The embodiment of the present application provides a guided NFC active communication method, which is used for a first device, and specifically can be applied to a processor of the first device. The first device is provided with an NFC tag. The method comprises steps S110-S130.

[0036] Step S110: Obtain distance information between the second device and the first device.

[0037] The first device and the second device adopt a wireless communication mode. Based on the positioning and distance estimation method related to the wireless communication system, the first device sends a specific signal, and the second device receives the specific signal or reflects the specific signal, so as to estimate the distance information between the first device and the second device based on the change in intensity of the specific signal.

[0038] Step S120: When the distance information is less than a preset threshold, a detection signal is generated; the detection signal is used to guide the second device to enter an active communication mode, so as to increase the NFC detection amplitude of the second device.

[0039] The detection signal can be an RF (Radio Frequency) pulse. When the second device receives the RF pulse in the process of approaching the first device, it indicates that the second device detects the presence of the NFC tag around it, and thus the second device will actively enter the polling mechanism, i.e., the active communication mode, in which the second device will start the high-amplitude card reading mode to increase the NFC detection amplitude of the second device, so that the NFC tag is more easily read by the second device. For example, when the mobile phone is used as the second device, after the mobile phone detects the detection signal, it will actively exit the low-power mode and enter the active communication mode to increase the NFC detection amplitude of the second device. In this case, the NFC tag of the first device is more easily detected by the mobile phone.

[0040] Step S130: When receiving the communication request sent by the second device, sending information to the second device through the NFC tag to complete the communication.

[0041] When receiving the communication request sent by the second device, it indicates that the second device has read the NFC tag in the first device, and the information in the NFC tag is directly read by the second device to complete the communication.

[0042] The present application obtains the distance information between the first device and the second device, and when the distance between them is less than a preset threshold, the first device generates a detection signal to guide the second device to enter the active communication mode to increase the NFC detection amplitude of the second device. The second device is a device for reading the NFC tag, so when the second device is in the active communication mode, the second device can more quickly or easily read the NFC tag of the first device. When the first device receives the communication request of the second device, the communication interaction between the first device and the second device is completed through the NFC tag. Compared with the traditional NFC information reading mode, when the distance between the first device and the second device is less than the preset threshold, the detection signal generated by the first device is used to guide the second device to enter the active communication mode in advance, so that the NFC tag of the first device can be more easily and stably read by the second device, and the reading distance of the NFC tag can be improved by setting the preset threshold, effectively improving the reading efficiency of the NFC information. In addition, actively guiding the second device into the communication mode by the first device can avoid the problem of NFC tag reading failure caused by the second device being unable to automatically enter the active communication mode due to its own standby or other reasons, so that the first device can be more easily read, and the reading success rate of the tag is improved.

[0043] In an embodiment of the present application, the preset threshold of the present application can be set as needed. For example, the preset threshold of the present application can be referenced to the limit distance of effective NFC communication (10 CM at a frequency of 13.56 MHz). The preset threshold of the present application can be greater than or equal to the limit distance of effective NFC communication. When the preset threshold of the present application is greater than the limit distance of effective NFC communication, the first device generates a signal to actively guide the second device to enter the active communication mode in advance before the second device reaches the triggering distance of the active communication mode of the second device (the triggering distance of the active communication mode of the second device is affected by the characteristics or state of the second device itself, and is usually less than the limit distance of effective NFC communication), so that the NFC tag in the first device can be read by the second device at a farther distance, thereby improving the reading distance of the NFC tag and effectively improving the reading efficiency of the NFC information.

[0044] In an embodiment of the present application, the method of the present application further comprises step S140.

[0045] Step S140: when the distance information is greater than or equal to the preset threshold, entering the waiting communication mode, in which the NFC tag closes the induction coil.

[0046] When the distance information is greater than or equal to the preset threshold, it indicates that there is no second device within the preset threshold of the first device at present, and the first device enters the waiting communication mode. In the waiting communication mode, the first device controls the NFC tag to close the induction coil. By using this scheme, the problem of "false touch" communication caused by the first device being too sensitive to the second device within a certain distance can be avoided. At the same time, in the waiting communication mode, the NFC closes the induction coil, thereby reducing the power consumption of the first device.

[0047] In an embodiment of the present application, the first device comprises a distance sensor, and in step S110, the method for obtaining the distance information between the second device and the first device comprises step S210.

[0048] Step S210: when it is detected that there is a second device in the sensing field of the distance sensor, the distance information between the second device and the first device is obtained in real time by the distance sensor.

[0049] As known from the above embodiment, when it is detected that there is a second device near the first device, the distance information between the second device and the first device is obtained in real time by the distance sensor, and the position information of the second device is actively monitored by the first device, so as to avoid the problem of reading failure caused by the second device being unable to accurately approach the NFC tag due to the unknown specific position of the NFC tag. At the same time, compared with the estimation method based on the change in the strength of a specific signal, the calculation method by using the distance sensor is simpler, effectively improves the information acquisition efficiency, and the accuracy of the information is higher.

[0050] In the embodiments of the present application, the manner in which the distance information of the second device and the first device is acquired can also be other distance acquisition devices, such as a laser ranging sensor, and the present application does not limit this.

[0051] In an embodiment of the present application, the NFC tag includes an induction coil, and in step S120, the method for generating the detection signal includes step S310.

[0052] Step S310: sending a control signal to the NFC tag, the control signal being used to trigger the NFC tag to perform at least one refresh operation; the refresh operation including the NFC tag closing the induction coil and then opening the induction coil again.

[0053] The control signal also includes refresh parameters, such as the frequency of the refresh and the time interval of the refresh.

[0054] When the distance between the second device and the first device is less than a preset threshold, the controller of the first device sends a control signal to the NFC tag to trigger the NFC tag to perform at least one refresh operation. The refresh operation can also be a restart operation, and the refresh operation instructs the NFC tag to close the induction coil and then open the induction coil again. It should be noted that the refresh operation causes the load impedance signal detected by the second device to change, and when the second device detects that the change in the load impedance signal is greater than a change threshold, the second device considers that there is an NFC tag around it, and thus enters an active communication mode and starts a high-amplitude card reading mode.

[0055] In the communication mode of a conventional NFC tag, the induction coil of the NFC tag is in a normally open state, and when the distance between the first device and the second device is very close, the second device can only detect that the change in the load impedance signal is greater than a change threshold. In the present application, when the first device and the second device are at a certain distance, the first device controls the NFC tag to perform a refresh operation, so that the second device can detect a large enough change in the load impedance signal at the current distance, and thus enters an active communication mode. In this way, the first device actively guides the second device to enter an active communication mode in which the NFC tag is more easily read, thereby improving the reading success rate of the NFC tag. At the same time, by actively generating a detection signal by the first device at a certain distance, the reading distance of the second device for the NFC tag can be effectively improved. Moreover, by using the refresh operation of the NFC tag itself to cause the change in the load impedance to generate the detection signal, other devices do not need to be introduced to generate the detection signal, and the cost can be effectively reduced.

[0056] For example, when the mobile phone is the second device, the first device of the application sends a control signal to the NFC tag when the distance between the mobile phone and the first device is less than the preset threshold, and the control signal is used to trigger the NFC tag to perform at least one refresh operation. At this time, it is similar to the mobile phone remaining stationary, and the NFC tag of the first device is used to approach the mobile phone multiple times to trigger the mobile phone to exit the LPCD mode, thereby enhancing the strength and stability of the NFC signal.

[0057] In an embodiment of the application, in order to reduce power consumption, when the distance between the second device and the first device is less than the preset threshold, if a communication request sent by the second device is received, the refresh operation is not needed to be performed, and step S130 can be directly performed.

[0058] When the distance between the second device and the first device is less than the preset threshold, if a communication request sent by the second device is not received, step S310 is performed.

[0059] In an embodiment of the application, before the detection signal is generated in step S120, step S410 is included.

[0060] Step S410: After waiting for a preset time, a communication request sent by the second device is detected.

[0061] When the distance information is less than the preset threshold, after waiting for a preset time, a communication request sent by the second device is detected, that is, the first device detects whether the NFC tag is being read, if yes, it indicates that the second device has read the NFC tag, and the detection signal does not need to be generated at this time. In this way, the generation of the detection signal is avoided to interfere with the reading process of the NFC tag, and at the same time, the waste of device power consumption can be avoided. If no, the detection signal is generated to guide the second device to enter the active communication mode.

[0062] The preset time can be determined according to the response time of the NFC tag. The response time of the NFC tag is a certain time difference between the NFC tag and the NFC reading device when they are contacted and respond. The application can use the preset time equal to the response time to avoid the problem of inaccurate communication detection caused by the response time, and improve the accuracy of detecting the communication request sent by the second device.

[0063] In an embodiment of the application, after the detection signal is generated in step S120, step S510 is included.

[0064] Step S510: When a communication request sent by the second device is not received, the detection signal is repeatedly generated.

[0065] When the communication request sent by the second device is not received, it indicates that the NFC tag in the first device has not been read yet. The detection signal is repeatedly generated until the communication request sent by the second device is received.

[0066] When the detection signal is the control signal in step S310 of the present application, the control signal is used to trigger the NFC tag to perform at least one refresh operation. Therefore, the number of refresh operations performed by the NFC tag controlled by the control signal is fixed. For example, the number of refresh operations is fixed to 1, 2 or 5. The number of refresh operations can be determined according to the degree of reaction of the second device to the change in load impedance. If the degree of reaction of the second device to the change in load impedance is small, the number of refresh operations can be set to be large. If the degree of reaction of the second device to the change in load impedance is large, the number of refresh operations can be set to be small.

[0067] In step S510 of the present application, when the communication request sent by the second device is not received, the control signal can be repeatedly sent to trigger the NFC tag to perform multiple refresh operations until the communication request sent by the second device is received. The multiple refresh operations can be similar to moving the NFC tag to make the NFC tag approach multiple times to guide the NFC tag to enter the active communication mode under the condition that the second device remains stationary. In this way, the second device is guided to enter the active communication mode multiple times, thereby increasing the success rate of reading the NFC tag.

[0068] In an embodiment of the present application, the first device includes an antenna. Before step S310, the first device further includes step S610.

[0069] In step S610, an activation signal is sent to the second device through the antenna. The activation signal is used to guide the second device to exit the sleep communication mode.

[0070] The activation signal can be a 13.56 MHz load impedance change signal. Before the second device approaches the first device and the change in load impedance signal of the second device caused by the first device is greater than the change threshold, a 13.56 MHz load impedance change signal is sent to the second device through the antenna to wake up the second device in advance, so that the second device exits the sleep communication mode, thereby enhancing the NFC signal strength and communication stability of the second device, avoiding the problem that the NFC tag is difficult to be read due to the application strategy of the second device, and reducing the reading failure rate or the reading efficiency.

[0071] In the step S610, the second device can be in deep standby mode, and the NFC function of the second device is closed. In this case, it is difficult to wake up the second device to enter the active communication mode by using the step S310. When the second device completely closes the NFC function, the second device can not be able to sense the magnetic field change and the load impedance change of the inductive coil caused by the refreshing operation in the step S310. Therefore, in order to avoid this situation, the step S610 is designed. Before the step S310, the antenna is used to send an activation signal to the second device. The activation signal is used to guide the second device to exit the sleep communication mode. At this time, the second device can exit the sleep communication mode and can sense the magnetic field change and the load impedance change of the inductive coil of the NFC tag. Thus, the problem that the second device cannot read the NFC tag of the first device when the second device is in deep standby mode is avoided.

[0072] In an embodiment of the present application, the first device includes an antenna, and the method for generating the detection signal in the step S120 includes the step S710.

[0073] The step S710 includes sending a trigger signal to the second device by using the antenna. The trigger signal is used to trigger the second device to enter the active communication mode, so as to increase the NFC detection amplitude of the second device.

[0074] In the step S710 of the present application, the detection signal of the present application can be directly sent to the second device by using the antenna. Since the communication range of the antenna is larger than the communication range of the NFC, the second device can be triggered to enter the active communication mode earlier by using the scheme, so as to improve the NFC reading efficiency of the second device.

[0075] In an embodiment of the present application, after the communication request sent by the second device is received in the step S130, the step S810 is included.

[0076] The step S810 includes stopping generating the detection signal.

[0077] When the first device receives the communication request sent by the second device, it indicates that the second device starts to enter the reading state. The detection signal is stopped to avoid the interference of the detection signal on the reading of the NFC tag by the second device, to ensure the stable communication between the second device and the NFC tag, and to improve the reading accuracy of the NFC tag. Meanwhile, the power consumption can be reduced.

[0078] In an embodiment of the present application, Figure 2 A program flow chart of the method for guiding the active NFC communication is shown. The method of the present application includes the steps S910-S940.

[0079] Step S910: the first device is in a waiting card reading state, in which the NFC tag in the first device is in an open state and can be sensed and read by other second devices.

[0080] Step S920: the first device in the waiting card reading state detects distance information of the second device and the first device through a distance sensor, and when it is detected that the second device enters a preset distance range, i.e., the distance information of the second device and the first device detected by the distance sensor is less than a preset threshold, judges whether a communication request of the second device is received after a waiting delay time T1; when the second device does not enter the preset distance range, the waiting card reading state is maintained.

[0081] Step S930: when the communication request of the second device is not received, the inductive coil of the NFC tag is controlled to be closed after a waiting delay time T2, and the inductive coil is opened again, and the distance information of the second device and the first device is continuously detected and whether the communication request of the second device is received is judged.

[0082] Step S940: when the communication request of the second device is received, it is judged whether the NFC tag is successfully read, if yes, the communication is completed, if not, the waiting card reading state is returned.

[0083] The method of the application can enable the first device to be read by the second device at a farther distance, effectively improve the reading efficiency of the NFC information, and avoid the problem that the second device cannot automatically enter the active communication mode due to its own reasons, thereby improving the reading success rate of the tag.

[0084] In an embodiment of the application, Figure 3 A module schematic diagram of a first device 400 and a second device 500 is shown. Figure 3 As shown, the first device 400 includes an NFC tag 401, a distance sensor 402, an inductive coil 403, and an antenna 404.

[0085] The specific interaction steps of the first device 400 and the second device 500 have been disclosed in the above scheme, and will not be repeated here.

[0086] Please refer to Figure 4 Another embodiment of the application provides a guiding NFC active communication device 200 for a first device, wherein the first device is provided with an NFC tag, and the device 200 includes an information acquisition module 201, a signal generation module 202, and a communication management module 203.

[0087] The information acquisition module 201 is used to acquire distance information of the second device and the first device, and the second device includes a device for reading the NFC tag.

[0088] The signal generation module 202 is configured to generate a detection signal when the distance information is less than the preset threshold value; the detection signal is used to guide the second device to enter the active communication mode, so as to increase the NFC detection amplitude of the second device.

[0089] The communication management module 203 is configured to send information to the second device through the NFC tag when receiving the communication request sent by the second device, and complete the communication.

[0090] Among them, the information acquisition module 201, the signal generation module 202 and the communication management module 203 in the guiding NFC active communication device 200 correspond to the content disclosed in the above part, which will not be repeated here.

[0091] From the above description, the beneficial effects of the present application are that the distance information between the first device and the second device is obtained, and when the distance between the two is less than the preset threshold value, the first device generates a detection signal, and the detection signal is used to guide the second device to enter the active communication mode, so as to increase the NFC detection amplitude of the second device. Among them, the second device is a device used to read the NFC tag, so when the second device is in the active communication mode, the second device can read the NFC tag of the first device more quickly or easily. When the first device receives the communication request of the second device, the communication interaction between the first device and the second device is completed through the NFC tag. Compared with the traditional NFC information reading mode, when the distance between the first device and the second device is less than the preset threshold value, the second device is guided into the active communication mode by the detection signal generated by the first device, so that the NFC tag of the first device can be more easily and stably read by the second device, and the reading distance of the NFC tag can be improved by setting the preset threshold value, which effectively improves the reading efficiency of the NFC information. In addition, the second device is actively guided into the communication mode by the first device, which can avoid the problem that the NFC tag reading fails due to the second device cannot automatically enter the active communication mode due to its own standby or other reasons, so that the first device can be more easily read, and the reading success rate of the tag is improved.

[0092] Please refer to Figure 5 Another embodiment of the present application provides an electronic device 300, which comprises a memory 301, a processor 302, and a computer program stored in the memory 301 and running on the processor 302, wherein the processor 302 implements each step of the above-mentioned guiding NFC active communication method when executing the computer program.

[0093] Among them, the guiding NFC active communication method has been disclosed in the above part, which will not be repeated here.

[0094] From the above description, the beneficial effects of the present application are that the first device actively guides the second device into the communication mode, which can avoid the problem of NFC tag reading failure caused by the second device failing to automatically enter the active communication mode due to its own reasons, so that the first device can be more easily read, and the tag reading success rate is improved.

[0095] In summary, the present application provides a kind of guide NFC active communication method, device and electronic equipment, obtain the distance information between first equipment and second equipment, when the distance of two is less than preset threshold value, by first equipment, active generation detection signal, to guide second equipment into active communication mode, to increase the NFC detection amplitude of second equipment.When first equipment receives the communication request of second equipment, then complete communication interaction with second equipment through NFC tag.Therein, second equipment is the equipment for reading the NFC tag, therefore when second equipment is in active communication mode, it makes second equipment more quickly or easily read the NFC tag of first equipment, greatly improves the success rate of label reading.At the same time, the distance sensor increased in the present application monitors whether there is second equipment around NFC tag in real time, controls NFC tag to generate detection signal through the distance information between first equipment and second equipment, to guide second equipment into active communication mode, improves the distance of second equipment reading NFC tag, avoids the problem of reading failure caused by the limited distance of second equipment reading NFC tag.Compared with the traditional NFC information reading mode, the second equipment of the present application is guided by the signal generated by the first equipment to exit the dormant communication mode in advance before reaching the exciting distance of active communication mode, so that the first equipment can be read by the second equipment at a farther distance, effectively improves the reading efficiency of NFC information, and avoids the problem of NFC tag reading failure caused by the second equipment failing to automatically enter the active communication mode due to its own reasons, improves the reading success rate of the tag.

[0096] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent transformation or direct or indirect application in related technical field based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A method for guiding NFC active communication, characterized in that, For a first device, wherein an NFC tag is provided in the first device, the method includes: Obtain distance information between the second device and the first device, wherein the second device includes a device for reading the NFC tag; When the distance information is less than a preset threshold, a detection signal is generated; the detection signal is used to guide the second device into active communication mode to increase the NFC detection amplitude of the second device. When a communication request is received from the second device, information is sent to the second device via the NFC tag to complete the communication; The NFC tag includes an induction coil, and the generation of the detection signal includes: A control signal is sent to the NFC tag, the control signal being used to trigger the NFC tag to perform at least one refresh operation, the refresh operation including the NFC tag turning off the induction coil and turning the induction coil back on; The refresh operation causes a change in the load impedance signal detected by the second device. When the second device detects that the change in the load impedance signal is greater than the change threshold, the second device enters the active communication mode and starts the high-amplitude card reading mode.

2. The method for guiding NFC active communication according to claim 1, characterized in that, The first device includes a distance sensor, and the step of acquiring distance information between the second device and the first device includes: When a second device is detected in the sensing field of the distance sensor, the distance information between the second device and the first device is obtained in real time through the distance sensor.

3. The method for guiding NFC active communication according to claim 1, characterized in that, The first device includes an antenna, and prior to generating the detection signal, it further includes: An activation signal is sent to the second device via the antenna; the activation signal is used to guide the second device out of the sleep communication mode.

4. The method for guiding NFC active communication according to claim 1, characterized in that, After receiving the communication request sent by the second device, the method further includes: Stop generating the detection signal.

5. The method for guiding NFC active communication according to claim 1, characterized in that, Also includes: When the distance information is greater than or equal to a preset threshold, the NFC tag enters a waiting communication mode, in which the induction coil is turned off.

6. The method for guiding NFC active communication according to claim 1, characterized in that, After generating the detection signal, the method further includes: If no communication request is received from the second device, the detection signal is generated repeatedly.

7. The method for guiding NFC active communication according to claim 1, characterized in that, Before generating the detection signal, the method further includes: After waiting for a preset time, the communication request sent by the second device is detected.

8. A device for guiding NFC active communication, characterized in that, For use in a first device, the first device having an NFC tag, the device includes an information acquisition module, a signal generation module and a communication management module; The information acquisition module is used to acquire distance information between the second device and the first device, wherein the second device includes a device for reading the NFC tag; The signal generation module is used to generate a detection signal when the distance information is less than a preset threshold; the detection signal is used to guide the second device into an active communication mode to increase the NFC detection amplitude of the second device. The communication management module is used to send information to the second device via the NFC tag to complete the communication when it receives a communication request from the second device. The NFC tag includes an induction coil, and the generation of the detection signal includes: A control signal is sent to the NFC tag, the control signal being used to trigger the NFC tag to perform at least one refresh operation, the refresh operation including the NFC tag turning off the induction coil and turning the induction coil back on; The refresh operation causes a change in the load impedance signal detected by the second device. When the second device detects that the change in the load impedance signal is greater than the change threshold, the second device enters the active communication mode and starts the high-amplitude card reading mode.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements a guided NFC active communication method as described in any one of claims 1-7.

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