CN108741462A - A kind of bracelet - Google Patents

Abstract

The invention relates to a bracelet, which belongs to the technical field of bracelets, and includes a bracelet body, a buckle, an electronic tag chip and an antenna, the electronic tag chip is set separately from the antenna, and the electronic tag chip is set in the buckle , the antenna is disposed in the bracelet body. The buckle is composed of an upper buckle and a lower buckle, the lower buckle is provided with a groove near the end of the bracelet body, and the electronic tag chip is located in the groove of the lower buckle. In the bracelet of the present invention, the electronic tag chip is built between the buckle belts, which does not increase the hardness of the bracelet, is easy to wear, and does not affect the read and write signals of the electronic tag at the same time, can easily read and write the electronic tag, and has strong communication capabilities . The electronic label is placed in the groove of the buckle, and the electronic label chip is arranged in the soft board substrate, which can form an effective protection for the electronic label chip. Separate the fragile electronic tag chip from the antenna to facilitate later replacement of parts.

Description

a bracelet

technical field

The invention belongs to the technical field of wristbands, and in particular relates to a wristband in which an electronic tag chip and an antenna are separated.

Background technique

With the advent of the Internet of Things era, the importance of personal information identification has become more prominent, and RFID (radio frequency) bracelets that represent personal information have also quietly become popular. However, due to the fragile circuit components in the bracelet, such as the antenna material, once damaged, the entire bracelet will not be able to function. The impact of the plastic and metal bracelets on the signal is analyzed above, and the entire bracelet is simply replaced with a The polyimide material will greatly increase the cost of the entire bracelet. Therefore, on the premise of not affecting the performance of the bracelet, the electronic tag is separated from the circuit based on the principle of electromagnetic induction. Therefore, for the convenience of component replacement, the electronic tag and It is necessary to assemble the receiving antenna and the reader separately.

Contents of the invention

The purpose of the present invention is to provide a wristband. For the material of the electronic tag chip in the radio frequency circuit of the wristband, the layout of the electronic tag chip, the material of the smart bracelet shell, etc., we adjust the wristband for these important factors that affect the performance of the bracelet. The local design of the ring, adding special material sealing blocks and material bags, prolongs the service life of the electronic tags in RFID without affecting the overall performance.

To achieve the above object, the technical solution of the present invention is: a bracelet, including a bracelet body, a buckle, an electronic tag chip and an antenna, characterized in that: the electronic tag chip is set separately from the antenna, and the electronic tag chip is set In the buckle, the antenna is arranged in the bracelet body.

Further, the buckle is composed of an upper buckle and a lower buckle, the lower buckle is provided with a groove near the end of the wristband body, and the electronic tag chip is located in the groove of the lower buckle.

Further, a sealing block is also arranged in the groove, and the sealing block is located above the electronic label chip.

Further, the electronic tag chip is not in direct contact with the groove, but is surrounded by a soft board substrate.

Further, the sealing block is surrounded by a hard base, and the hard base is an upwardly protruding arc-shaped base.

Further, the soft substrate is made of polyimide, and the hard substrate is made of rubber.

Further, the material of the buckle is plastic or silicone rubber.

Further, an electromagnetic bandgap structure is set in the electronic tag chip.

Further, the antenna realizes size reduction and wide frequency band increase through a fractal structure.

Further, the electronic tag chip is 3cm away from the bracelet body.

The beneficial effects of the present invention are:

(1) The electronic tag chip is built between the buckle straps, which will not increase the hardness of the bracelet, is easy to wear, and does not affect the read and write signals of the electronic tag, which can easily read and write the electronic tag, and has strong communication capabilities.

(2) The electronic tag is placed in the groove of the buckle, and the electronic tag chip is set in the soft board substrate, which can effectively protect the electronic tag chip, prevent the electronic tag from being damaged, and is durable.

(3) Separate the fragile electronic tag chip from the antenna to facilitate later replacement of parts.

Description of drawings

Fig. 1 is the top view structure schematic diagram of bracelet of the present invention;

Fig. 2 is a sectional view along the A-A direction of Fig. 1;

Fig. 3 is the structural representation of lower layer buckle;

Figure 4 is a schematic diagram of the bracelet circuit adjustment;

Fig. 5 is the equivalent circuit diagram of the reader with antenna;

Fig. 6 is a schematic diagram of a block diagram of a reader;

Figure 7 is a schematic diagram of the working principle of the radio frequency identification system.

in:

1. Bracelet body; 2-1. Upper buckle; 2-2. Lower buckle; 3. Electronic label chip; 4. Groove; 5. Sealing block.

Detailed ways

The present invention will be described in further detail below in conjunction with accompanying drawing, present embodiment is carried out under the premise of technical scheme of the present invention, has provided detailed implementation mode and specific operation process, but protection scope of the present invention is not limited to following Example.

A bracelet as shown in Figure 1-3, including a bracelet body 1, a buckle, an electronic tag chip 3 and an antenna, characterized in that: the electronic tag chip 3 is set separately from the antenna, and the electronic tag chip 3 It is arranged in the buckle, and the antenna is arranged in the bracelet body 1 . The electronic tag chip 3 is built between the buckles, which does not increase the hardness of the wristband, is convenient to wear, and does not affect the reading and writing signals of the electronic tag, and can easily read and write the electronic tag, and has strong communication ability. The easily damaged electronic tag chip 3 is separated from the antenna, which facilitates replacement of parts later.

Further, the buckle is composed of an upper buckle 2-1 and a lower buckle 2-2, the lower buckle 2-2 is provided with a groove 4 near the end of the wristband body 1, and the electronic tag chip 3 is located In the groove 4 of the lower buckle 2-2. The antenna is located in the wristband body 1, and the electronic tag is located in the separated groove 4. The working principle of the electronic tag and antenna is based on electromagnetic induction. Any position does not affect its use, but for the convenience of design, it is generally placed 3cm away from the meter head.

Further, a sealing block 5 is also arranged in the groove 4 , and the sealing block 5 is located above the electronic label chip 3 . The groove 4 is sealed by adhesive.

Further, the electronic label chip 3 is not in direct contact with the groove 4, but is surrounded by a flexible substrate. The electronic tag is placed in the buckle groove 4, and the electronic tag chip 3 is arranged in the soft board substrate, which can effectively protect the electronic tag chip 3, prevent the electronic tag from being damaged, and is durable.

Further, the sealing block 5 is surrounded by a hard base, and the hard base is an upwardly protruding arc base. It not only prevents it from bouncing up and down, but also avoids its translation from side to side. At the same time, it can make the buckle better fit the shape of the wrist when wearing it, making it more comfortable to wear.

Further, the soft substrate is made of polyimide, and the hard substrate is made of rubber.

Further, the material of the buckle is plastic or silicone rubber.

Further, based on the separated electronic tag and receiving antenna, the area of the metal coating on the back of the substrate of the RFID tag is increased, and an electromagnetic bandgap (EBG) structure is introduced into the tag substrate.

Furthermore, based on the separated electronic tag and receiving antenna, in the design of the antenna, the characteristics of the fractal structure are used to reduce the size of the antenna and increase the broadband characteristics.

As shown in Figure 4, in the design of the internal circuit power supply module of this embodiment, the adjustment module can adjust the control voltage of the wristband, and the output module can control the stability of the voltage. Through the circuit power regulating device of this embodiment, the bracelet saves more power and has a longer standby time.

As shown in Figure 5, the equivalent circuit diagram of the reader, the conductor loop required to generate the alternating magnetic field is represented by the coil L1, and the series resistance R1 corresponds to the ohmic loss of the wire-wound resistance in the conductor loop LI. In order to obtain a larger current in the conductor loop L1, a series resonant circuit is formed in series via the capacitor C1.

As shown in Figure 6, the block diagram of the reader is composed of a control system and a high-frequency interface. The control of the entire system is realized by an external application system through control instructions. Its coupling performance is inductive-electromagnetic, the communication process is FDX, HDX, SQE, and the data transmission method from the transponder to the reader is load modulation, backscattering, and high-order harmonics.

As shown in Figure 7, the electronic tag chip 3 is composed of a coupling element and a chip. Each tag has a unique electronic code, which is attached to an object to identify the target object, and the reader reads the tag information. It can be designed as a handheld or Fixed; the antenna transmits radio frequency signals between the tag and the reader. The basic working principle of RFID technology is that after the tag enters the magnetic field, it receives the radio frequency signal sent by the reader, and sends out the product stored in the chip by virtue of the energy obtained by the induced current. Information, or a signal of a certain frequency actively sent by the tag, the reader reads and decodes the information, and then sends it to the central information system for relevant data processing. A complete RFID system is composed of three parts: the reader and the electronic tag, which is the so-called transponder and the application software system. Its working principle is that the Reader emits a specific frequency of radio wave energy to drive the circuit. The internal data is sent, and at this time Reader receives and interprets the data sequentially and sends them to the application program for corresponding processing. In terms of communication and energy sensing methods between RFID card readers and electronic tags, they can be roughly divided into two types: inductive coupling and backscatter coupling. Generally, most low-frequency RFIDs use the first type, while higher frequencies mostly use the second type. The reader can be a reading or reading/writing device according to the structure and technology used, and it is the information control and processing center of the RFID system. The reader is usually composed of a coupling module, a transceiver module, a control module and an interface unit. The half-duplex communication mode is generally used for information exchange between the reader and the transponder, and the reader provides energy and timing to the passive transponder through coupling. In practical applications, management functions such as collection, processing and remote transmission of object identification information can be further realized through Ethernet or WLAN. The transponder is the information carrier of the RFID system, and most of the transponders are passive units composed of coupling elements (coils, microstrip antennas, etc.) and microchips.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A bracelet, comprising a bracelet body, a buckle, an electronic tag chip and an antenna, characterized in that: the electronic tag chip is separated from the antenna, and the electronic tag chip is arranged in the buckle, the The antenna is arranged in the bracelet body. 2. The bracelet according to claim 1, characterized in that: the buckle is composed of an upper buckle and a lower buckle, the lower buckle is provided with a groove near the end of the bracelet body, and the electronic tag chip Located in the groove of the lower buckle. 3 . The bracelet according to claim 2 , wherein a sealing block is further arranged in the groove, and the sealing block is located above the electronic tag chip. 4 . 4. The wristband according to claim 3, wherein the electronic tag chip is not in direct contact with the groove, but is surrounded by a soft board substrate. 5 . The wristband according to claim 4 , wherein the sealing block is surrounded by a hard base, and the hard base is an upwardly protruding arc base. 6. The bracelet according to claim 5, characterized in that: the soft board base is made of polyimide, and the hard base is made of rubber. 7. The bracelet according to claim 6, characterized in that: the buckle is made of plastic or silicone rubber. 8. The bracelet according to claim 7, characterized in that: an electromagnetic bandgap structure is set in the electronic tag chip. 9. The wristband according to claim 8, characterized in that: the antenna achieves size reduction and broadband increase through a fractal structure. 10. The bracelet according to claim 9, characterized in that: the electronic tag chip is 3cm away from the bracelet body.