CN116998805A - Encryption passive NFC watchband and wearable intelligent device - Google Patents

Abstract

The invention provides an encrypted passive NFC watchband and a wearable smart device. The watchband includes: a watchband body; an NFC chip embedded in the watchband body; and an NFC coil embedded in the watchband. inside the body and connected to the NFC chip; several PIN pins are exposed on the surface of the watch band body, one end of the PIN pin passes through the watch band body and is connected to the pin of the NFC chip, and the other end Used to connect to the communication interface of wearable smart devices. The wearable smart device includes: a device body, which is detachably connected to the above-mentioned encrypted passive NFC watch strap. This solution enables the NFC module to be integrated on the strap of a wearable smart device, making it easier to add NFC functions without replacing the entire wearable smart device.

Description

An encrypted passive NFC watch strap and wearable smart device

Technical field

The invention relates to the field of NFC technology, and in particular, to an encrypted passive NFC watch strap and a wearable smart device.

Background technique

Due to the development of NFC (Near Field Communication) technology, more and more wearable products such as smart watches and bracelets integrate NFC modules. Through this NFC module, multiple applications can be realized, such as serving as bus cards and access control. Cards, bank cards, etc., provide great convenience to people's daily lives.

Existing NFC wearable devices usually integrate the NFC module on the watch body or bracelet body, and the NFC function is deeply bound to the watch or bracelet. If the user has NFC needs, he or she must replace the watch or bracelet with a brand new product, which is relatively expensive. Therefore, it is necessary to provide a cheaper way to solve users' urgent needs for convenient NFC buses, subways, and access control.

Contents of the invention

The purpose of the present invention is to provide an encrypted passive NFC watch strap and a wearable smart device to solve the problem that in the existing technology, the NFC modules are integrated on the wearable smart device body, resulting in the need to replace the entire wearable smart device when adding NFC functions. Equipment problems.

The technical solutions provided by the invention are as follows:

The invention provides an encrypted passive NFC watch strap, which includes: a watch strap body;

NFC chip is embedded in the watch strap body;

The NFC coil is embedded in the watchband body and connected to the NFC chip;

There are several PIN pins exposed on the surface of the watch strap body. One end of the PIN pin passes through the watch strap body and is connected to the pins of the NFC chip, and the other end is used to connect to the communication interface of the wearable smart device. .

Existing NFC modules are integrated on the body of wearable smart devices, which means that when adding NFC functions, the entire wearable smart device needs to be replaced. This solution sets the NFC chip and NFC coil inside the strap body. At the same time, several PIN pins are exposed on the surface of the strap body. One end of the PIN pin passes through the strap body and is connected to the pin of the NFC chip. One end is used to connect to the communication interface of the wearable smart device, so that the NFC module can be integrated on the strap of the wearable smart device on the premise that the NFC function can be realized, making it easier to add the NFC function without replacing the entire wearable device. Smart devices facilitate flexible use of equipment.

In some embodiments, it also includes:

A watch strap adapter is provided with watch strap lugs on both sides of the watch strap adapter, and the watch strap lugs match the watch strap body.

An annular magnet is provided on the surface of the watch band adapter, and the wearable smart device and the watch band adapter are connected through the magnetic force of the annular magnet.

Specifically, when connecting the NFC chip and the wearable smart device, the connection can be made through a watch strap adapter. On the one hand, the watch strap adapter can realize the communication connection between the NFC chip and the wearable smart device, and on the other hand, it can also realize the communication connection between the NFC chip and the wearable smart device. Quick removal and installation of watch straps and wearable smart devices (such as watches). Both sides of the strap adapter are provided with strap lugs, and the strap lugs match the strap body to fix the strap adapter on the strap body; the surface of the strap adapter is provided with The ring magnet, the wearable smart device and the watch strap adapter are connected through the magnetic force of the ring magnet, so that when connecting the watch strap and the wearable smart device, you only need to attach the wearable smart device to the watch strap adapter. , when disassembling, just use a little force to take off the wearable device. In addition, in order to ensure accurate positioning and no deviation when the watch strap is connected to the wearable smart device, a positioning structure can also be set up. For example, a ring groove matching the ring magnet is provided on the wearable smart device so that the ring magnet is stuck in the ring. inside the tank. In other embodiments, other methods can be used to implement portable installation and removal of the watchband and the wearable smart device, such as bonding, snapping, etc., which are not limited here.

In some embodiments, the watch strap adapter is provided with several penetrating PIN pins, the PIN pins are located in the annular magnet, and the PIN pins correspond to the PIN pins one by one. For connecting the wearable smart device and the NFC chip.

Specifically, when connecting the NFC chip and the wearable smart device through the watch strap adapter, several penetrating PIN pins can be provided on the watch strap adapter, and the PIN pins correspond to the PIN pins one by one, so that the When the wearable smart device is connected to the NFC chip through the watch strap adapter, the PIN pin can be connected to the PIN pin in one-to-one correspondence to realize the communication connection between the wearable smart device and the NFC chip. The PIN pins are all arranged in the ring magnet, so that the positioning of the PIN pin and the PIN pin can be realized.

In some embodiments, the number of PIN pins is four, and the pins of the NFC chip are VCC pins, I2C-CLK pins, I2C-DATA pins and GND pins, which are used to implement the table. I2C communication with body.

Specifically, depending on the communication method, the number of PIN pins can be set to four, and the pins of the NFC chip are defined as VCC pins, I2C-CLK pins, I2C-DATA pins and GND pins, so as to achieve the following: I2C protocol communication with body.

In some embodiments, the number of PIN pins is five, and the pins of the NFC chip are VCC pins, RST pins, CLK pins, Data pins and GND pins, which are used to implement the table. ISO-7816 communication with body.

Depending on the communication method, the number of PIN pins can be set to five. The pins of the NFC chip are defined as VCC pin, RST pin, CLK pin, Data pin and GND pin, thereby realizing the ISO of the watch strap body. -7816 protocol communication.

In some embodiments, the NFC chip interacts with an access control NFC card writer or a mobile terminal with an NFC card reading and writing function through the NFC coil, and writes access control ID information into the encrypted passive NFC watch strap.

The NFC watchband of this solution is based on the traditional plastic watchband and is embedded with a passive NFC chip with encryption function. In particular, the UID of the chip can be repeatedly erased and has the NFC access control function; the NFC watchband only needs to be written when writing. With the access control UID number, or after completing the bus or subway card opening, you can wear a wearable smart device equipped with an NFC strap to complete the rigid travel needs such as door access control, taking buses, and swiping cards on the subway without power supply.

Specifically, the full-featured NFC chip can realize the call of unlimited card UID information libraries through the card number mapping of the APP, and simulate multiple access control information. The NFC access control implementation method of the present invention is different from the full-function active NFC chip. Since the passive NFC access control does not have power supply for card switching, the NFC access control simulation can only be realized by writing the information of the chip ID. Therefore, the NFC access control of the present invention has Uniqueness. There are two ways to implement access control card writing in the present invention: 1. Residential property management uses an access control NFC card writer to establish interaction through the NFC coil, and writes ID information to the encrypted NFC chip built into the watch strap to realize writing of NFC access control information. 2. A mobile terminal with NFC read-write card function, after reading the UID information of the known physical access card, the NFC watch strap establishes interaction with the NFC read-write card mobile terminal through the NFC coil, and the terminal provides the built-in encryption to the watch strap. The NFC chip writes ID information to realize the writing of NFC access control information; the mobile terminal can be a mobile phone, computer, or other full-function NFC device with full-featured NFC.

In some embodiments, the watchband body establishes communication with the wearable smart device, and enters bus card and subway card information through the wearable smart device.

Electrically connect the 4PIN or 5PIN communication port of a wearable smart device such as a smart watch to the NFC watchband. The watch establishes communication with the NFC watchband through I2C or ISO-7816 protocol to read the NFC watchband information and add built-in information to the NFC watchband. The encrypted NFC chip writes the APP application information of NFC bus and subway cards to realize the issuance and recharge of bus cards and subway cards.

Specifically, after the watch end turns on the NFC switch through the APP, the watch end will issue a VCC power-on request. At this time, the charging PIN pin of the watch end will output a 5V voltage. After the 5V voltage passes through the circuit board built into the adapter board structure, it will be output by the LDO. Convert 5V to 1.8V power supply to the encrypted passive NFC chip built into the watch strap; at the same time, the watch sends an I2C protocol or ISO-7816 protocol signal through the remaining physical connection lines to perform chip status on the encrypted passive NFC chip. Handshake; after the watch and NFC strap successfully establish communication, the watch writes the Applet corresponding to the bus card and subway card into the encrypted passive NFC chip SE storage.

In some embodiments, the watchband body is used as a bus and subway card, sending recharge instructions to the server through the wearable smart device, and writing the recharge data issued by the server through the wearable smart device. The encrypted passive NFC watch strap is built into the bus and subway APPLET.

In some embodiments, the watch strap body is used as a bus and subway card, and the wearable smart device establishes communication with a reader and writer with NFC recharge qualifications, and the recharge amount is transferred to the reader and writer with NFC recharge qualifications. Write the encrypted passive NFC strap to the built-in bus and subway APPLET.

Specifically, when recharging passive NFC bus or subway cards, you can first establish a physical connection between the wearable smart device and the watch strap. For the card-ready watch strap, the wearable smart device communicates with the card through the mobile network and wifi. The server requests an over-the-air recharge instruction, and the server downloads the recharge data from the server, and then writes it into the bus and subway APPLET built into the encrypted passive NFC watchband through the wearable smart device; you can also use the unique NFC function through a reader with NFC recharge qualifications. With the characteristics of near field communication, the NFC reader/writer establishes communication with the NFC of the watch strap and writes the recharge amount into the bus and subway APPLET built into the encrypted passive NFC watch strap.

In addition, the present invention also provides a wearable smart device, including: a device body, which is detachably connected to the above-mentioned encrypted passive NFC watch strap.

When the above-mentioned encrypted passive NFC strap is specifically used, the device body of the wearable smart device such as a smart watch can be separated, so that the device body can be detachably connected to the above-mentioned encrypted passive NFC strap, thereby realizing the addition of a wearable When using the NFC function of a smart device, there is no need to replace the entire wearable smart device, only the strap can be replaced, which is conducive to the flexible use of the device. There are many detachable connection methods, such as magnetic fixing, snapping, splicing, bonding, etc., which are not limited here.

An encrypted passive NFC watch strap and wearable smart device provided by the present invention have at least the following technical effects:

(1) By setting the NFC chip and NFC coil in the strap body, at the same time, several PIN pins are exposed on the surface of the strap body, and one end of the PIN pin passes through the strap body and is connected to the pin of the NFC chip. The other end is used to connect to the communication interface of the wearable smart device, so that the NFC module can be integrated on the strap of the wearable smart device under the premise that the NFC function can be realized, making it more convenient to add the NFC function without replacing the entire wearable smart device. Wearable smart devices are conducive to flexible use of devices;

(2) When connecting the NFC chip and the wearable smart device, the connection is made through a watch strap adapter. On the one hand, the watch strap adapter can realize the communication connection between the NFC chip and the wearable smart device. On the other hand, it can also realize the watch strap adapter. Quick removal and installation of straps and wearable smart devices (such as watches);

(3) Breaking through the traditional watchband with built-in NFCTAG business card, access control and other single applications, it integrates bus, subway and access control, which is more convenient and can realize the recharge of bus cards and subway cards.

Description of the drawings

Below, the preferred embodiments will be described in a clear and easy-to-understand manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution will be further described.

Figure 1 is a schematic structural diagram of an encrypted passive NFC watch strap according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a watch strap adapter according to an embodiment of the present invention;

Figure 3 is a schematic side structural view of a watch strap adapter according to an embodiment of the present invention;

Figure 4 is a schematic diagram of the connection structure between the watch strap adapter and the watch strap body according to the embodiment of the present invention;

Figure 5 is a schematic side structural view of the connection between the watch strap adapter and the watch strap body according to the embodiment of the present invention.

Numbers in the picture: 1-strap body; 2-NFC chip; 3-NFC coil; 4-strap adapter; 5-ring magnet; 6-PIN foot; 7-PIN needle; 8-strap lugs.

Detailed ways

In order to explain the embodiments of the present invention or technical solutions in the prior art more clearly, the specific implementation modes of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without exerting creative efforts, other drawings can also be obtained based on these drawings, and obtain Other embodiments.

In order to keep the drawings concise, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is schematically illustrated or labeled. In this article, "a" not only means "only one", but can also mean "more than one".

Example 1

In one embodiment, with reference to Figure 1 of the accompanying drawings, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2 and an NFC coil 3. The watch strap body 1 is preferably a plastic watch strap with plasticity. It is better and stronger and can be connected with wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

Existing NFC modules are integrated on the body of wearable smart devices, which means that when adding NFC functions, the entire wearable smart device needs to be replaced. This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 2

In one embodiment, with reference to Figures 1 to 3 of the description, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2, an NFC coil 3 and a watch strap adapter 4. The strap body 1 is preferably a plastic watch strap, which has good plasticity and is strong, and can be connected to wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

Referring to Figures 4 and 5 of the accompanying drawings of the instruction manual, strap lugs 8 are provided on both sides of the strap adapter 4, and the strap lugs 8 match the strap body 1. The surface of the strap adapter 4 is provided with There is a ring magnet 5, and the wearable smart device and the watch strap adapter 4 are connected through the magnetic force of the ring magnet 5.

Specifically, when connecting the NFC chip 2 and the wearable smart device, the connection can be made through the watch strap adapter 4. The watch strap adapter 4 can realize the communication connection between the NFC chip 2 and the wearable smart device on the one hand, and can also realize the communication connection between the NFC chip 2 and the wearable smart device on the other hand. It also enables quick disassembly and installation of watch straps and wearable smart devices (such as watches). The watch strap adapter 4 is provided with watch strap lugs 8 on both sides, and the watch strap lugs 8 match the watch strap body 1 so as to fix the watch strap adapter 4 on the watch strap body 1; The surface of the adapter 4 is provided with a ring magnet 5, and the wearable smart device and the watch strap adapter 4 are connected through the magnetic force of the ring magnet 5, so that when connecting the watch strap and the wearable smart device, you only need to connect the wearable smart device It can be adsorbed on the watch strap adapter 4. When disassembling, you only need to use a little force to take off the wearable device. In addition, in order to ensure that the strap can be accurately positioned and not deviated when connected to the wearable smart device, a positioning structure can also be set, such as setting an annular groove matching the ring magnet 5 on the wearable smart device so that the ring magnet 5 snaps in the annular groove. In other embodiments, other methods can be used to implement portable installation and removal of the watchband and the wearable smart device, such as bonding, snapping, etc., which are not limited here.

This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 3

In one embodiment, based on Embodiment 2, with reference to Figure 2 of the description, the watch strap adapter 4 is provided with several penetrating PIN pins 7, and the PIN pins 7 are all located in the annular magnet 5, and the PIN pins 7 corresponds to PIN pin 6 one-to-one and is used to connect the wearable smart device and NFC chip 2.

Specifically, when connecting the NFC chip 2 and the wearable smart device through the watch band adapter 4, a number of penetrating PIN pins 7 can be provided on the watch band adapter 4, and the PIN pins 7 and the PIN pins 6 are the same. There is a one-to-one correspondence, so that when the wearable smart device is connected to the NFC chip 2 through the watch strap adapter 4, the PIN pin 7 can be connected to the PIN pin 6 in a one-to-one correspondence, thereby realizing the communication connection between the wearable smart device and the NFC chip 2. The PIN pins 7 are all arranged in the annular magnet 5, so that the positioning of the PIN pin 7 and the PIN pin 6 can be achieved.

Example 4

In one embodiment, based on Embodiment 3, the number of PIN pins 7 is four, and the pins of the NFC chip 2 are VCC pins, I2C-CLK pins, I2C-DATA pins and GND pins. Used to implement I2C communication of the watch strap body 1.

Specifically, depending on the communication method, the number of PIN pins 7 can be set to four. The pins of NFC chip 2 are defined as VCC pin, I2C-CLK pin, I2C-DATA pin and GND pin, so that Realize the I2C protocol communication of the watch strap body 1.

Example 5

In one embodiment, based on Embodiment 3, the number of PIN pins 7 is five, and the pins of the NFC chip 2 are VCC pins, RST pins, CLK pins, Data pins and GND pins. Used to implement ISO-7816 communication of the strap body 1.

Depending on the communication method, the number of PIN pins 7 can be set to five. The pins of NFC chip 2 are defined as VCC pin, RST pin, CLK pin, Data pin and GND pin, thereby realizing the strap body. 1 ISO-7816 protocol communication.

Example 6

In one embodiment, with reference to Figure 1 of the accompanying drawings, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2 and an NFC coil 3. The watch strap body 1 is preferably a plastic watch strap with plasticity. It is better and stronger and can be connected with wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

The NFC chip 2 interacts with the access control NFC card writer or a mobile terminal with NFC card reading and writing function through the NFC coil 3, and writes the access control ID information into the encrypted passive NFC watch strap.

The NFC watch strap of this solution is based on the traditional plastic watch strap and is embedded with a passive NFC chip 2 with encryption function. In particular, the UID of the chip can be repeatedly erased and has the NFC access control function; With the unique access control UID number, or after completing the bus or subway card opening, you can wear a wearable smart device equipped with an NFC strap without power supply to complete the rigid travel needs such as door access control, taking buses, and swiping cards on the subway.

Specifically, the full-featured NFC chip 2 can realize the call of unlimited card UID information libraries and simulate multiple access control information through the card number mapping of the APP. The NFC access control implementation method of the present invention is different from the full-function active NFC chip 2. Since the passive NFC access control does not have power supply for card switching, the NFC access control simulation can only be realized by writing the information of the chip ID. Therefore, the NFC access control of the present invention Has uniqueness. There are two ways to implement access control card writing in the present invention: 1. Residential property management uses an access control NFC card writer to establish interaction through the NFC coil 3, and writes ID information to the encrypted NFC chip 2 built into the watch strap to realize NFC access control information. 2. A mobile terminal with NFC read-write card function, after reading the UID information of the known physical access card, the NFC watch strap establishes interaction with the NFC read-write card mobile terminal through the NFC coil 3, and the terminal gives the watch strap The built-in encrypted NFC chip 2 writes ID information to realize the writing of NFC access control information; the mobile terminal can be a mobile phone, computer, or other full-function NFC device with full-featured NFC.

This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 7

In one embodiment, with reference to Figure 1 of the accompanying drawings, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2 and an NFC coil 3. The watch strap body 1 is preferably a plastic watch strap with plasticity. It is better and stronger and can be connected with wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

The watch strap body 1 establishes communication with the wearable smart device, and enters bus card and subway card information through the wearable smart device.

Electrically connect the 4PIN or 5PIN communication port of a wearable smart device such as a smart watch to the NFC watchband. The watch establishes communication with the NFC watchband through I2C or ISO-7816 protocol to read the NFC watchband information and add built-in information to the NFC watchband. The encrypted NFC chip 2 writes the APP application information of NFC bus and subway cards to realize the issuance and recharge of bus cards and subway cards.

Specifically, after the watch end turns on the NFC switch through the APP, the watch end will issue a VCC power-on request. At this time, the charging PIN pin 6 of the watch end will output a 5V voltage. After the 5V voltage passes through the circuit board built into the adapter board structure, it will be output by The LDO converts 5V into 1.8V power supply, which is used by the encrypted passive NFC chip 2 built into the watch strap. At the same time, the watch sends an I2C protocol or ISO-7816 protocol signal through other physical connection lines, and supplies the encrypted passive NFC chip 2 Perform chip status handshake; after the watch and NFC strap successfully establish communication, the watch end writes the Applet corresponding to the bus card and subway card into the encrypted passive NFC chip SE storage.

This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 8

In one embodiment, with reference to Figure 1 of the accompanying drawings, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2 and an NFC coil 3. The watch strap body 1 is preferably a plastic watch strap with plasticity. It is better and stronger and can be connected with wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

The watchband body 1 is used as a bus and subway card, sending recharge instructions to the server through the wearable smart device, and writing the recharge data issued by the server into the bus and subway APPLET built into the encrypted passive NFC watchband through the wearable smart device.

Specifically, when recharging passive NFC bus or subway cards, you can first establish a physical connection between the wearable smart device and the watch strap. For the card-ready watch strap, the wearable smart device communicates with the card through the mobile network and wifi. The server requests an over-the-air recharge command, and the server downloads the recharge data from the terminal, and then writes it into the bus and subway APPLET built into the encrypted passive NFC watchband through the wearable smart device.

This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 9

In one embodiment, with reference to Figure 1 of the accompanying drawings, the present invention provides an encrypted passive NFC watch strap, including a watch strap body 1, an NFC chip 2 and an NFC coil 3. The watch strap body 1 is preferably a plastic watch strap with plasticity. It is better and stronger and can be connected with wearable smart devices such as smart watches.

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

The watch strap body 1 is used as a bus and subway card. It establishes communication with a reader and writer with NFC recharge qualification through a wearable smart device, and writes the recharge amount into the encrypted passive NFC strap built-in through the reader and writer with NFC recharge qualification. The bus subway APPLET.

Specifically, when recharging passive NFC bus or subway cards, you can also use the unique near field communication characteristics of NFC through a reader with NFC recharge qualifications. The NFC reader establishes communication with the NFC on the watch strap, and Write the recharge amount into the bus and subway APPLET built into the encrypted passive NFC watch strap.

This solution sets the NFC chip 2 and NFC coil 3 in the strap body 1. At the same time, several PIN pins 6 are exposed on the surface of the strap body 1. One end of the PIN pin 6 passes through the strap body 1 and the NFC The pins of chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the strap of the wearable smart device, so that the NFC function can be added More convenient, there is no need to replace the entire wearable smart device, which is conducive to the flexible use of the device.

Example 10

In one embodiment, the present invention also provides a wearable smart device, including: a device body, which is detachably connected to an encrypted passive NFC watch strap.

The encrypted passive NFC strap includes the strap body 1, NFC chip 2 and NFC coil 3. The strap body 1 is preferably a plastic strap, which has good plasticity and is strong, and can be connected to wearable smart devices such as smart watches. .

The NFC chip 2 is embedded in the watchband body 1; the NFC coil 3 is also embedded in the watchband body 1 and connected to the NFC chip 2. NFC chip 2 and NFC coil 3 together form an NFC module to realize the NFC function of the watch strap.

There are several PIN pins 6 exposed on the surface of the watch strap body 1. One end of the PIN pin 6 passes through the watch strap body 1 and is connected to the pins of the NFC chip 2, and the other end is used to connect to the communication interface of the wearable smart device, thereby realizing Communication connection between wearable smart device and NFC chip 2.

When the above-mentioned encrypted passive NFC strap is specifically used, the device body of the wearable smart device such as a smart watch can be separated, so that the device body can be detachably connected to the above-mentioned encrypted passive NFC strap, thereby realizing the addition of a wearable When using the NFC function of a smart device, there is no need to replace the entire wearable smart device, only the strap can be replaced, which is conducive to the flexible use of the device. There are many detachable connection methods, such as magnetic fixing, snapping, splicing, bonding, etc., which are not limited here.

Specifically, the wearable smart device provided by the present invention has at least the following technical effects:

(1) By setting the NFC chip 2 and NFC coil 3 in the strap body 1 of the watch strap, at the same time, several PIN pins 6 are exposed on the surface of the strap body 1, and one end of the PIN pin 6 passes through the strap body 1 and The pins of the NFC chip 2 are connected, and the other end is used to connect to the communication interface of the wearable smart device, so that on the premise that the NFC function can be realized, the NFC module can be integrated on the watch strap of the wearable smart device, so that the NFC function can be realized It is more convenient to add without replacing the entire wearable smart device, which is conducive to the flexible use of the device;

(2) When connecting the NFC chip 2 and the wearable smart device, the connection is made through the strap adapter 4. The strap adapter 4 can realize the communication connection between the NFC chip 2 and the wearable smart device on the one hand, and on the other hand It can also realize the quick disassembly and installation of watch straps and wearable smart devices (such as watches);

(3) Breaking through the traditional watchband with built-in NFCTAG business card, access control and other single applications, it integrates bus, subway and access control, which is more convenient and can realize the recharge of bus cards and subway cards.

It should be noted that the above embodiments can be freely combined as needed. The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications can also be made. should be regarded as the protection scope of the present invention.

Claims (10)

1. An encrypted passive NFC wristband, comprising:

a watchband body;

NFC chip embedded in the watchband body;

the NFC coil is embedded in the watchband body and connected with the NFC chip;

the surface of watchband body exposes a plurality of PIN foot, the one end of PIN foot passes the watchband body with the PIN of NFC chip is connected, and the other end is used for being connected with the communication interface of wearable smart machine.

2. The encrypted passive NFC wristband of claim 1, further comprising:

the watchband adapter is provided with watchband buckling lugs at two sides, the watchband buckling lugs are matched with the watchband body,

the surface of watchband adapter is provided with ring magnet, wearable smart machine with the watchband adapter is through ring magnet's magnetic force connects.

3. The encrypted passive NFC watchband according to claim 2, wherein a plurality of PIN PINs penetrating through the watchband adapter are arranged on the watchband adapter, the PIN PINs are located in the ring magnet, and the PIN PINs are in one-to-one correspondence with the PIN PINs and are used for connecting the wearable intelligent device and the NFC chip.

4. A cryptographic passive NFC wristband according to claim 3, wherein the number of PIN PINs is four, and PINs of the NFC chip are VCC PIN, I2C-CLK PIN, I2C-DATA PIN and GND PIN for enabling I2C communication of the wristband body.

5. A cryptographic passive NFC wristband according to claim 3, wherein the number of PIN PINs is five, and PINs of the NFC chip are VCC PIN, RST PIN, CLK PIN, data PIN and GND PIN, for implementing ISO-7816 communication of the wristband body.

6. The encrypted passive NFC wristband of claim 1, wherein the NFC chip interacts with an access control NFC reader/writer or a mobile terminal with NFC read/write card functionality through the NFC coil to write access control ID information into the encrypted passive NFC wristband.

7. The encrypted passive NFC wristband according to claim 4 or 5, wherein the wristband body establishes communication with the wearable smart device and performs information entry of a bus card and a subway card through the wearable smart device.

8. The encrypted passive NFC watchband according to claim 7, wherein the watchband body is configured to be used as a bus subway card, send a recharging instruction to a server through the wearable intelligent device, and write recharging data issued by the server into a bus subway application built in the encrypted passive NFC watchband through the wearable intelligent device.

9. The encrypted passive NFC wristband according to claim 7, wherein the wristband body is configured to be a bus subway card, establish communication with a reader/writer with NFC recharging qualifications through the wearable smart device, and write a recharging amount into a bus subway APPLET built in the encrypted passive NFC wristband through the reader/writer with NFC recharging qualifications.

10. A wearable intelligent device, comprising: an apparatus body detachably connected to the encrypted passive NFC wristband of any one of claims 1-9.