CN203456574U - RFID antenna for inner die - Google Patents
RFID antenna for inner die Download PDFInfo
- Publication number
- CN203456574U CN203456574U CN201320188343.6U CN201320188343U CN203456574U CN 203456574 U CN203456574 U CN 203456574U CN 201320188343 U CN201320188343 U CN 201320188343U CN 203456574 U CN203456574 U CN 203456574U
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- antenna
- rfid chip
- rfid
- connecting portion
- dimensional
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Abstract
The utility model relates to a radio frequency identification (RFID) antenna for an inner die. The RFID antenna comprises an electric induction portion and a connecting portion, wherein the two portions are in an integrated mode. The connecting portion and an RFID chip are in a gap bridge connection mode. The antenna is in a three-dimensional cylindrical helical structure; and the center of the helical structure is connected with the RFID chip. And the antenna is formed by a single metal wire. According to the scheme, on the basis of the cylindrical three-dimensional helical antenna design, the combination mode of the RFID chip and the antenna is distinguished from the normal method of electronic tag binding welding; and three-dimensional suspension induction work is realized. Therefore, a phenomenon that the RFID chip and the antenna or the antenna itself are/is fractured when the electronic tag is in a bending state can be well avoided.
Description
Technical field
The utility model relates to a kind of device with digital form label record carrier, specifically a kind ofly for inner mold, examine
The RFID antenna of surveying.
Background technology
Radio-frequency (RF) identification is RFID(Radio Frequency IDentification) technology, claim again electronic tag, radio frequency identification, it is a kind of communication technology, can identify specific objective and read and write related data by radio signals, and without setting up machinery between recognition system and specific objective or optics contacts.The technology such as conventional have low frequency (125k～134.2K), high frequency (13.56Mhz), a hyperfrequency, passive.Rfid interrogator also divides portable with fixed, RFID technology application is at present very wide, as: library, gate control system, food security is traced to the source etc. and label enters behind magnetic field, receives the radiofrequency signal that plug-in reader sends, the energy that relies on induced current to obtain sends out the product information (PassiveTag being stored in chip, passive label or passive label), or initiatively send the signal (ActiveTag, active label or active tag) of a certain frequency; After plug-in reader reading information decoding, deliver to CIS and carry out relevant data processing.
Along with the development of REID, the application in manufacturing industry is also more and more extensive, and in production management, very important effect is all played in the fields such as logistics management, can save a large amount of manpower and materials, saves enterprise's spending.
In manufacturing industry, mould is used very general.The cost of mould is also very high.Existing mould is used the life cycle management of life cycle management, especially inner mold very difficult, and existing inner mold is differentiated service condition.Can only be by desk checking mode, the identification of human body naked eyes, or the recording mode of knocking off.The operating characteristic of inner mold causes naked eyes identification often can not correctly judge loss and the service condition of mould.Manual record mode, in large-scale production, needs a large amount of manpowers, expends production cost.
Inner mold environment for use, often the diameter of inner mold is very little, and the requirement of temperature, pressure, chemical characteristic is very high, just very harsh to the requirement of embedded chip.Especially for temperature index.The temperature range of civilian level is 0 ℃～70 ℃, and technical grade is-40 ℃～85 ℃, and army grade is-55 ℃～125 ℃.Following table shows is the rank that the working temperature of inner mold has reached superhigh temperature.
The characteristic of RFID electronic tag can address this problem.But common electronic tag does not reach its requirement.At chip internal structure, there is strict requirement material aspect, and existing RFID electronic label antenna is difficult to normal operation below so harsh operational environment.Chip internal structure is also difficult to bear the work of intensity like this.
Utility model content
The utility model, for prior art above shortcomings, provides a kind of RFID antenna detecting for inner mold, can tackle the situation that RFID chip and antenna or antenna self fracture occur electronic tag under bending state.
The utility model is achieved through the following technical solutions, and antenna described in the utility model comprises: electric induction portion and the connecting portion of integrated molding, wherein: connecting portion is passed a bridge and is connected with RFID chip.
Described antenna is three-dimensional cylindrical helical structure, wherein: the center of helical structure connects RFID chip.
Described antenna is that single metal line forms, and the length of this metal wire and width are 5～10mm * 13～20mm.
The communication distance of described antenna is 0.5m～2m.
The utility model has the advantage of: adopt the three-dimensional helical antenna design of column, the combination of RFID chip and antenna is different from the method for common electronic tag binding welding, be stereo suspending formula induction work, there is the situation of RFID chip and antenna or antenna self fracture in the fine reply electronic tag of this technology under bending state.The antenna of helical spring type can recover rapidly reset condition under pressure, and reveals good ductility and Memorability for the change list of temperature.
Accompanying drawing explanation
Fig. 1 a-Fig. 1 b is the structural representation of antenna and RFID chip;
In figure: Fig. 1 a is the structural representation of antenna and RFID chip, Fig. 1 b is the local enlarged diagram of Fig. 1 a.
Fig. 2 a-Fig. 2 c is antenna and RFID chip connection diagram;
In figure: Fig. 2 a is connected mode 1; Fig. 2 b is connected mode 2; Fig. 2 c is connected mode 3.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed execution mode and concrete operating process, but protection range of the present utility model is not limited to following embodiment.
Embodiment 1
As shown in Fig. 1 a-Fig. 1 b, the present embodiment comprises: the electric induction portion 1 of integrated molding and connecting portion 2, wherein: connecting portion 2 is passed a bridge and is connected with RFID chip 3.
Described antenna 4 is three-dimensional cylindrical helical structure, wherein: the center of helical structure connects RFID chip 3.
Described antenna 4 is single metal line formation, and the length of this metal wire and width are 5～10mm * 13～20mm.
The communication distance of described antenna 4 is 0.5m～2m.
When the present embodiment is used, together be arranged in inner mold to be detected 5 with RFID chip 3, when peripheral fetch equipment (not shown) discharges magnetic field, columnar antenna 4 produces electric coupling effect with RFID chip 3, when meeting inductance, the open circuit electromotive force sensing in magnetic field and load leading-in end voltage, drive RFID chip 3 internal storages automatically to record inner mold 5 access times, and send to peripheral reading device by induction antenna 4.
As shown in Figure 2 a, be connected mode 1, wherein: radio frequency cathode contact RF+ is connected with antenna 4 is staggered with radio frequency cathode contact RF-, and keep another radio frequency cathode contact RF-and earth terminal NC is not-connected status simultaneously.
As shown in Fig. 2 b and Fig. 2 c, be connected mode 2 and 3, wherein: radio frequency cathode contact RF+ is connected with one end of antenna 4 with earth terminal NC contact, any one in two radio frequency cathode contact RF-contacts is connected with the other end of antenna 4; The Main Function of these 3 kinds of connected modes is, when label just can be activated during near the reader of active state.When the electronic tag of the present embodiment and 3 formation of RFID chip enters the RF field of reader, it is chip power supply that power management module can be converted to Induced magnetic field direct voltage.RFID chip 3 can pass through all three kinds of modulation formats of PIE coded demodulation reader, comprises DSB-ASK, SSB-ASK and PR-ASK.Label can switch the reflection coefficient of 4 pairs, its antenna between reflection and absorption, then by backscattering and the reader communication of incident RF waveform.Backscattered data can be encoded as FM0 or Miller sub-carrier modulation (coming control coding to select and data rate by reader).Antenna 4 provides after suitable impedance on its terminal.The nonlinear characteristic of RFID chip 3 electric power management circuits makes determining of optimum source impedance, makes the efficiency transmitting of antenna 4 be stablized effectively work.
Claims (3)
1. the RFID antenna detecting for inner mold, is characterized in that, described antenna comprises: electric induction portion and the connecting portion of integrated molding, wherein: connecting portion is passed a bridge and is connected with RFID chip.
2. antenna according to claim 1, is characterized in that, described antenna is three-dimensional cylindrical helical structure, wherein: the center of helical structure connects RFID chip.
3. antenna according to claim 1, is characterized in that, the communication distance of described antenna is 0.5m～2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320188343.6U CN203456574U (en) | 2013-04-15 | 2013-04-15 | RFID antenna for inner die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320188343.6U CN203456574U (en) | 2013-04-15 | 2013-04-15 | RFID antenna for inner die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203456574U true CN203456574U (en) | 2014-02-26 |
Family
ID=50136430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320188343.6U Expired - Fee Related CN203456574U (en) | 2013-04-15 | 2013-04-15 | RFID antenna for inner die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203456574U (en) |
-
2013
- 2013-04-15 CN CN201320188343.6U patent/CN203456574U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20190415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |