TWI792304B - Rfid bullet - Google Patents

Abstract

A RFID bullet includes a body and a RFID device located in the body. The body includes a housing and a head connected to the housing. The RFID device includes a circuit board, a RFID chip, a iron core and a coil. The circuit board is located between the head and the iron core. The RFID chip is located on the circuit board, and the coil surrounds the iron core.

Description

RFID game bullet

The invention relates to shooting game equipment and the application of radio frequency identification (RFID) technology, in particular to an RFID game bullet.

Among the many sports and leisure projects, the adventure and excitement brought by the real participation in shooting games has attracted many people to participate in recent years, bringing many business opportunities. Therefore, wood-related equipment is changing with each passing day, and new methods are constantly being introduced. , For example, Chinese CN 110280011 A patent discloses a game gun for shooting a game bullet. When the game bullet hits a target (such as an enemy's helmet or clothing), a passive RFID tag in the game bullet is used to judge whether the shooting is an effective shooting. This kind of game bullet with the passive RFID tag currently has a variety of structures, some are configured to stick to the target, and some do not need this sticking function. When the target is shot, the RFID reader (RFID reader) installed on the target will read the data pre-stored in the passive RFID tag, such as an identification code.

Yet existing this type of game bullet still needs to be improved on structural configuration.

In order to improve the structural configuration of the existing game bullets, the present invention provides a new RFID game bullet, which includes a bullet body and a radio frequency identification device located in the bullet body. The bullet body includes an elastic body and a bullet connected with the elastic body. Should The radio frequency identification device includes a circuit board, a radio frequency identification chip, a columnar iron core and an induction coil. The circuit board is located between the warhead and the cylindrical iron core, the radio frequency identification chip is located on the circuit board, and the induction coil is wound around the cylindrical iron core.

In one embodiment, a front side of the circuit board of the RFID game bullet of the present invention faces the bullet, the radio frequency identification chip is located on the front side of the circuit board, and the columnar core is located on a back side of the circuit board. Two terminals of the coil are coupled to the radio frequency identification chip.

In one embodiment, the radio frequency identification device of the RFID game bullet of the present invention includes a plastic protective film, and the plastic protective film covers the circuit board, the radio frequency identification chip, the column core and the induction coil.

In one embodiment, the plastic protective film of the RFID game bullet of the present invention is formed with an opening corresponding to one end of the circuit board.

In one embodiment, the RFID game bullet of the present invention further includes a protective case inside the body, and the radio frequency identification device is located in the protective case.

In one embodiment, the cylindrical iron core of the RFID game bullet of the present invention is longer than the induction coil, and the induction coil is adjacent to the circuit board.

In one embodiment, the length of the cylindrical iron core of the RFID game bullet of the present invention is 10-16 mm, and the outer diameter is preferably 1.5-4 mm. .

In one embodiment, the cylindrical iron core of the RFID game bullet of the present invention is hollow, and its inner diameter is 0.2-2mm.

In one embodiment, the induction coil of the RFID game bullet of the present invention is wound into one or more layers, wherein, when the induction coil is wound into one layer, the number of turns is 15-28, and when the induction coil is wound into two layers , the number of turns in the outer layer is 7~15, and the number of turns in the inner layer is 6~15.

1: Bullet body

11: Elastic body

111: rear storage room

12: Warhead

121: exhaust hole

122: Front storage room

2: RFID device

21: Circuit board

211: front

212: back

22: RFID chip

23: Cylindrical core

24: induction coil

221: insulating protective colloid

25: Plastic protective film

251: opening

3: Protective cover

31: Containment room

32: ring groove

Fig. 1 shows the three-dimensional decomposition of a preferred embodiment of the RFID game bullet of the present invention picture.

Fig. 2 shows a perspective view of the preferred embodiment of the present invention.

Figure 3 shows a partial sectional view of the preferred embodiment of the present invention.

FIG. 4 shows an exploded perspective view of a radio frequency identification device 2 of the preferred embodiment of the present invention.

FIG. 5 mainly shows a side view of the radio frequency identification device 2 of the present invention.

Fig. 1 and Fig. 2 show a preferred embodiment of the RFID game bullet of the present invention, and this RFID game bullet can be loaded into a game shooting gun (not shown in the figure), and is ejected by this game shooting gun, in this embodiment Among them, the shooting gun in this game is an air gun.

The RFID game bullet includes a bullet body 1 and a radio frequency identification device 2 arranged in the bullet body 1 . The bullet body 1 includes an elastic body 11 and a bullet head 12 connected to the elastic body 11 . In this embodiment, the elastic body 11 and the projectile head 12 can optionally be glued together so that the two are firmly connected without any separation, but the connection method between the two is not limited to the above.

The elastic body 11 is preferably made of foaming material, such as PE, PP or PS foaming material, but not limited thereto, for example, paper, bamboo or metal can be used to make the elastic body with lightweight materials. Body 11 is preferred. In this embodiment, the warhead 12 has a front storage chamber 122, and the bullet body 11 has a rear storage chamber 111 communicating with the front storage chamber 122, as shown in FIG. 3, the rear storage chamber 111 accommodates the radio frequency identification device 2 . However, the radio frequency identification device 2 can also be installed in the storage chamber 122 before the warhead 12, if the housing chamber 122 before the warhead 12 is configured to be large enough, or the radio frequency identification device 2 is partially located in the bullet body. 11 in the rear storage chamber 111 , partly located in the front storage chamber 110 of the warhead 12 .

The warhead 12 can be made of plastic, rubber or silicone material, preferably soft elastic material. When the RFID game bullet hits a target, it is soft and elastic The permanent bullet 12 can reduce the impact on the target, thereby reducing damage to circuits or microstructures on the target, or reducing pain (if the target is a person). In this embodiment, the bullet 12 is a hollow shell made of elastic rubber or silicone, and more preferably has a vent hole 121 . However, the bullet 12 could also be a solid body.

As shown in FIG. 4 and FIG. 5 , the radio frequency identification device 2 includes a circuit board 21 , a radio frequency identification chip 22 , a cylindrical iron core 23 and an induction coil 24 . A front side 211 of the circuit board 21 faces the warhead 12 . The RFID chip 22 is located on the front surface 211 of the circuit board 21 , and usually, the RFID chip 22 is covered by an insulating protective colloid 221 .

The radio frequency identification chip 22 is typically a radio frequency identification chip of 13.56MHz frequency band and 125KHz frequency band, which can be selected from NXP's I-Code-SLI, NTag213, NTag215, NTag216, Mifare and other chips, or ST25TV512 from STMicroelectronics , ST25TV02K, ST25TV16k and other chips, or Temic’s T5777, T5778 and other chips, or EM’s EM4102, EM4200, EM4069 and other chips.

The cylindrical core 23 is located on a back surface 212 of the circuit board 21 . The induction coil 24 is wound around the cylindrical core 23 , and two terminals 241 of the induction coil 24 are coupled to the RFID chip 22 . In this embodiment, the two terminals 241 of the induction coil 24 pass through the circuit board 21 and then are soldered together with the pins (not shown) of the RFID chip 22 . In addition, the cylindrical core 23 can be a cylinder, a square cylinder or a cylinder of other shapes. The cylindrical iron core 23 is hollow or solid. In this embodiment, its length is preferably 10-16mm, and its outer diameter is preferably 1.5-4mm. The inner diameter of the hollow cylindrical iron core 23 is preferably 0.2~2mm. The induction coil 24 can be wound into one layer, and the number of turns is preferably 15-28. The induction coil 24 can preferably be wound into double layers, the number of turns of the outer layer is preferably 7-15, and the number of turns of the inner layer is preferably 6-15. Moreover, the length of the cylindrical core 23 is preferably longer than the induction coil 24 .

As can be seen from the above description, the circuit board 21 of the RFID game bullet of the present invention and the radio frequency identification chip 22 on it are located between the bullet 12 and the cylindrical iron core 23, and the induction coil 24 is wound around the cylindrical iron core. twenty three. With such a configuration, Not only can the overall size conform to the expected size, but it will not be too large or too heavy, and the sensitivity of the RFID game bullet in signal induction can be effectively improved to solve the problem of poor signal induction in the prior art.

In this embodiment, as shown in FIGS. 1 and 3 , the radio frequency identification device 2 preferably further includes a plastic protective film 25 . After the circuit board 21, the radio frequency identification chip 22, the columnar core 23 and the induction coil 24 are assembled to form an elongated structure (see FIG. 5), the elongated structure is then stuffed into a plastic shrink film tube , after being heated, the plastic shrink film tube forms the plastic protective film 25 that confines the elongated structure. An opening 251 is formed on the plastic protection film 25 corresponding to one end of the circuit board 21 . Another opening (not shown in the figure) can also be formed at the other end of the plastic protective film 25 .

After the plastic protective film 25 wraps the circuit board 21, the radio frequency identification chip 22, the columnar core 23 and the induction coil 24, it will play a certain degree of moisture-proof effect on them, and also make them more structurally It is tight and not easy to loosen or separate, that is, the structure of the entire radio frequency identification device 2 will be more durable, and it is not easy to be damaged by the bullet body 1 hitting the target.

As shown in Fig. 1 and Fig. 2, the RFID game bullet of the present invention may further include a protective cover 3 located in the projectile body 11, but this is not necessary. The radio frequency identification device 2 is located in the protective case 3 , more specifically, the protective case 3 has a chamber 31 , and the radio frequency identification device 2 is inserted into the chamber 31 . Preferably, the protective cover 3 is made of elastic rubber or silicon rubber to buffer the shock generated by the bullet body 1 hitting the target and provide better protection for the radio frequency identification device 2 . In this embodiment, the protective cover 3 and the RFID device 2 can be glued together, and the protective cover 3 and the elastic body 11 can also be glued together, but these are not necessary. In addition, one or more ring grooves 32 are formed on the outer surface of the protective cover 3 , and these ring grooves 32 can accommodate more glue to strengthen the combination between the protective cover 3 and the elastic body 11 .

11: Elastic body

111: rear storage room

12: Warhead

121: exhaust hole

2: RFID device

25: Plastic protective film

251: opening

3: Protective cover

Claims (10)

An RFID game bullet, comprising: a bullet body, including a bullet body and a bullet head connected to the bullet body, the bullet head has a front storage room, and the bullet body has a storage room after the front storage room; and a radio frequency identification The device is located in the front storage room, or the rear storage room, or partly located in the front storage room and partly located in the rear storage room, the radio frequency identification device includes a circuit board, and the circuit board is connected with a radio frequency identification chip and a The cylindrical iron core, wherein the circuit board is located between the warhead and the cylindrical iron core, and an induction coil is wound around the cylindrical iron core. The RFID game bullet as described in claim 1, wherein a front side of the circuit board faces the bullet, the radio frequency identification chip is located on the front side of the circuit board, the columnar iron core is located on a back side of the circuit board, and the induction coil The two terminals are coupled to the radio frequency identification chip. The RFID game bullet as described in claim 1 or 2, wherein the radio frequency identification device includes a plastic protective film, and the plastic protective film covers the circuit board, the radio frequency identification chip, the cylindrical core and the induction coil. The RFID game bullet as claimed in item 3, wherein an opening is formed at one end of the plastic protective film corresponding to the circuit board. The RFID game bullet as described in claim 1 or 2 includes a protective case inside the body, and the radio frequency identification device is located in the protective case. The RFID game bullet as described in claim 3 includes a protective case inside the body, and the radio frequency identification device is located in the protective case. The RFID game bullet as claimed in item 1, wherein the length of the cylindrical iron core is longer than the induction coil, and the induction coil is adjacent to the circuit board. The RFID game bullet as described in claim 1 or 7, wherein the length of the cylindrical core is 10-16mm, and the outer diameter is preferably 1.5-4mm. The RFID game bullet as described in claim item 8, wherein the cylindrical iron core is hollow, and its inner diameter is 0.2-2mm. The RFID game bullet as described in claim item 1, wherein the induction coil is wound into one or more layers, wherein, when the induction coil is wound into one layer, the number of turns is 15-28, and when the induction coil is wound into two layers, The number of turns in the outer layer is 7-15, and the number of turns in the inner layer is 6-15.

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