Rfid interrogator and assembly thereof
Technical field
The utility model relates to a kind of RFID ((Radio Frequency Identification) read write line, particularly a kind of rfid interrogator and assembly thereof that can be connected with mobile phone.
Background technology
Radio frequency identification (RFID) technology is a kind of RFID of utilization label, by the transmitting-receiving of radio frequency signal, to reach the technology of automatic identification.The system of radio frequency identification generally is made up of RFID label and RFID identification apparatus.This label emitting identification signal or receive the signal of this identification apparatus passively and produce identification signal, and receive this identification signal to reach the purpose of identification by this identification apparatus.
Because the convenience of identification technique in wireless radio frequency, it is mainly used in enterprise supply chain management, for example tracking of products and warehousing management at present.Other all are its applicable fields such as highway toll, passport system, vehicle management, animal tag, body implant and books stock arrangement.
The utility model content
The purpose of this utility model is to provide a kind of rfid interrogator and assembly thereof that can be connected with mobile phone.
One embodiment of rfid interrogator of the present utility model comprises a circuit board, comprises a USB (Universal-Serial-Bus) controller; One micro USB connector is electrically connected in this USB controller; And an antenna plate, be stacked and placed on this circuit board, wherein this antenna plate comprises an inverted F shaped antenna.
Rfid interrogator of the present utility model, preferred, this circuit board also comprises: a processor is electrically connected in this USB controller; One radio frequency signal processing circuit is electrically connected in this processor; One transfer circuit is electrically connected in this radio frequency signal processing circuit; One receiving circuit is electrically connected in this radio frequency signal processing circuit; And a coupling mechanism, be electrically connected in this transfer circuit and this receiving circuit.
Rfid interrogator of the present utility model, preferred, this circuit board also comprises a testing circuit, is electrically connected this coupling mechanism and this processor.
Rfid interrogator of the present utility model, preferred, this circuit board also comprises a low-pass filter, is electrically connected this coupling mechanism and this inverted F shaped antenna.
Rfid interrogator of the present utility model, preferred, this circuit board also comprises one and switches circuit, is electrically connected a power amplification circuit of this processor and this transfer circuit.
Rfid interrogator of the present utility model, preferred, this circuit board also comprises: one first holding circuit is electrically connected a power contact of a power terminal and this processor of this USB controller; And one second holding circuit, be electrically connected a data contacts of a signal terminal and this processor of this USB controller.
Rfid interrogator of the present utility model, preferred, this micro USB connector comprises a metal shell, and this metal shell comprises two root bead pin, and at least one of this two root beads pin comprises a horizontal part and an erection part, and this erection part is connected in this horizontal part.
Rfid interrogator of the present utility model, preferred, this inverted F shaped antenna comprises: one first horizontal segment; One second horizontal segment is connected in this first horizontal segment with vertical mode in fact; And the 3rd horizontal segment, be connected in this second horizontal segment with vertical mode in fact.
Rfid interrogator of the present utility model, preferred, also comprise: metallic shield on is arranged at a upper surface of this circuit board; And metallic shield once, be arranged at a lower surface of this circuit board.
Rfid interrogator of the present utility model, preferred, also comprise an insulation shell, this circuit board and this antenna plate place this insulation shell inside, and this micro USB connector stretches out this insulation shell.
One embodiment of RFID read-write assembly of the present utility model, comprise a rfid interrogator and a mobile phone, this rfid interrogator comprises one first micro USB connector, this mobile phone comprises one second micro USB connector, and this second micro USB connector is configured to connect this first micro USB connector.In an embodiment of the present utility model, this rfid interrogator comprises a circuit board, comprises a first processor and one the one USB controller, and a USB controller connects this first processor and this first micro USB connector; And an antenna plate, be stacked and placed on this circuit board, wherein this antenna plate comprises an inverted F shaped antenna.In an embodiment of the present utility model, this mobile phone comprises one second processor; And one the 2nd USB controller, connect this second processor and this second micro USB connector.
RFID read-write assembly of the present utility model, preferred, this circuit board also comprises: a radio frequency signal processing circuit is electrically connected in this first processor; One transfer circuit is electrically connected in this radio frequency signal processing circuit; One receiving circuit is electrically connected in this radio frequency signal processing circuit; And a coupling mechanism, be electrically connected in this transfer circuit and this receiving circuit.
RFID read-write assembly of the present utility model, preferred, this circuit board also comprises a testing circuit, is electrically connected this coupling mechanism and this first processor.
RFID read-write assembly of the present utility model, preferred, this circuit board also comprises a low-pass filter, is electrically connected this coupling mechanism and this inverted F shaped antenna.
RFID read-write assembly of the present utility model, preferred, this circuit board also comprises one and switches circuit, is electrically connected a power amplification circuit of this first processor and this transfer circuit.
RFID of the present utility model read-write assembly, preferred, this circuit board also comprises: one first holding circuit is electrically connected a power contact of a power terminal and this first processor of a USB controller; And one second holding circuit, be electrically connected a data contacts of a signal terminal and this first processor of a USB controller.
RFID read-write assembly of the present utility model, preferred, this first micro USB connector comprises a metal shell, and this metal shell comprises two root bead pin, and at least one of this two root beads pin comprises a horizontal part and an erection part, and this erection part is connected in this horizontal part.
RFID read-write assembly of the present utility model, preferred, this inverted F shaped antenna comprises: one first horizontal segment; One second horizontal segment is connected in this first horizontal segment with vertical mode in fact; And the 3rd horizontal segment, be connected in this second horizontal segment with vertical mode in fact.
RFID of the present utility model read-write assembly, preferred, also comprise: metallic shield on is arranged at a upper surface of this circuit board; And metallic shield once, be arranged at a lower surface of this circuit board.
RFID read-write assembly of the present utility model, preferred, also comprise an insulation shell, this circuit board and this antenna plate place this insulation shell inside, and this first micro USB connector stretches out this insulation shell.
RFID read-write assembly of the present utility model, preferred, wherein this mobile phone is configured to provide the electrical power for operation of this rfid interrogator.
RFID read-write assembly of the present utility model, preferred, this first micro USB connector is a micro USB plug, this second micro USB connector is a micro USB socket.
RFID read-write assembly of the present utility model, preferred, the size of this rfid interrogator is less than this mobile phone in size.
The beneficial effects of the utility model are, general mobile phone all has USB controller and micro USB connector, the disclosed technology of the utility model is integrated in rfid interrogator with USB controller and micro USB connector, therefore this rfid interrogator can be directly connected in mobile phone, is user's interface with the mobile phone.
Above summarize technical characterictic of the present utility model and advantage quite widely, obtained preferable understanding so that the utility model is hereinafter described in detail.Other technical characterictic and the advantage that constitute claim target of the present utility model will be described in hereinafter.The utility model the technical staff in the technical field should be appreciated that, can quite easily utilize hereinafter the concept that discloses to can be used as modification with specific embodiment or design other structure or technology and realize the purpose identical with the utility model.The utility model the technical staff in the technical field also should be appreciated that, this class is equal to construction can't break away from the spirit and scope of the present utility model that accompanying Claim defines.
Description of drawings
The RFID read-write assembly of Fig. 1 and Fig. 2 illustration the utility model one embodiment;
The functional-block diagram of the RFID read-write assembly of Fig. 3 illustration the utility model one embodiment;
The exploded view of the rfid interrogator of Fig. 4 the utility model one embodiment;
The functional-block diagram of the rfid interrogator of Fig. 5 illustration the utility model one embodiment;
Fig. 6 A, Fig. 6 B, Fig. 7 illustration circuit design drawing corresponding with Fig. 5;
The circuit design drawing of the USB controller of Fig. 8 illustration the utility model one embodiment;
The distributing electric power figure of the rfid interrogator of Fig. 9 illustration the utility model one embodiment;
The stereographic map of the first micro USB connector of Figure 10 illustration the utility model one embodiment;
The first micro USB connector of Figure 11 illustration the utility model one embodiment and the stereographic map of circuit board; And
The stereographic map of the antenna plate of Figure 12 illustration the utility model one embodiment.
Wherein, description of reference numerals is as follows:
10 RFID read and write assembly
100 mobile phones
110 second micro USB connectors
120 the 2nd USB controllers
130 second processors
200 rfid interrogators
210 first micro USB connectors
211 metal shells
213 legs
215 horizontal parts
217 erection part
220 the one USB controllers
221 first holding circuits
223 second holding circuits
230 first processors
240 insulation shells
241 bodies
243 open fronts
245 protecgulums
247 perforates
250 circuit boards
Metallic shield on 251
The 252A metal frame
The 252B crown cap
253 times metallic shields
The 254A metal frame
The 254B crown cap
257 electric connectors
260 antenna plate
261 inverted F shaped antennas
263A first horizontal segment
263B second horizontal segment
263C second horizontal segment
265 vertical sections
267 electric connectors
270 radio frequency signal processing circuit
271 oscillators
280 transfer circuits
281 power amplification circuits
283 attenuators
285 balancing circuitrys
290 receiving circuits
300 coupling mechanisms
310 testing circuits
320 low-pass filters
330 commutation circuits
Embodiment
The RFID read-write assembly 10 of Fig. 1 and Fig. 2 illustration the utility model one embodiment.In an embodiment of the present utility model, this RFID read-write assembly 10 comprises a rfid interrogator 200 and a mobile phone 100, this rfid interrogator 200 comprises one first micro USB connector 210, this mobile phone 100 comprises one second micro USB connector 110, and this second micro USB connector 110 is configured to connect this first micro USB connector 210.In an embodiment of the present utility model, the size of this rfid interrogator 200 is less than the size of this mobile phone 100.
The functional-block diagram of the RFID read-write assembly 10 of Fig. 3 illustration the utility model one embodiment.In an embodiment of the present utility model, this rfid interrogator 200 comprises a first processor 230 and one the one USB controller, 220, the one USB controllers 220 connect this first processor 230 and this first micro USB connector 210; This mobile phone 100 comprises one second processor 130 and one the 2nd USB controller, 120, the two USB controllers 120 connect this second processor 130 and this second micro USB connector 110.
Fig. 4 is the exploded view of the rfid interrogator 200 of the utility model one embodiment.In an embodiment of the present utility model, this rfid interrogator 200 comprises an insulation shell 240, a circuit board 250, be arranged at this circuit board 250 upper surface one on metallic shield 251, be arranged at the lower surface of this circuit board 250 metallic shield once 253, be stacked and placed on an antenna plate 260 of metallic shield 251 tops on this, wherein this antenna plate 260 comprises an inverted F shaped antenna 261.In an embodiment of the present utility model, this circuit board 250 has an electric connector 257, this antenna plate 260 has an electric connector 267, and connects this electric connector 257 and this electric connector 264 can form a signal transmission pathway between this circuit board 250 and this antenna plate 260 by a lead (not being shown among the figure).
In an embodiment of the present utility model, this insulation shell 240 comprises a body 241 and a protecgulum 245, this body 241 has an open front 243, and this protecgulum 245 is configured to seal this open front 243, and wherein this circuit board 250 and this antenna plate 260 are placed in this insulation shell 240 inside.In an embodiment of the present utility model, this protecgulum 245 has a perforate 247, and this first micro USB connector 210 stretches out this insulation shell 240 from this perforate 247.In an embodiment of the present utility model, metallic shield 251 comprises a metal frame 252A and a crown cap 252B on this; This time metallic shield 253 comprises a metal frame 254A and a crown cap 254B.
The functional-block diagram of the rfid interrogator 200 of Fig. 5 illustration the utility model one embodiment, the circuit design drawing of Fig. 6 A, Fig. 6 B, Fig. 7 illustration correspondence.In an embodiment of the present utility model, except the processor 230 that is electrically connected in a USB controller 220, this rfid interrogator 200 also comprises a radio frequency signal processing circuit 270, is electrically connected in this first processor 230; One transfer circuit 280 is electrically connected in this radio frequency signal processing circuit 270; One receiving circuit 290 is electrically connected in this radio frequency signal processing circuit 270; One oscillator 271 is electrically connected in this radio frequency signal processing circuit 270; One coupling mechanism 300 is electrically connected in this transfer circuit 280 and this receiving circuit 290; One testing circuit 310 is electrically connected this coupling mechanism 300 and this first processor 230; One low-pass filter 320 is electrically connected this coupling mechanism 300 and this inverted F shaped antenna 261; And one switch circuit 330, is electrically connected a power amplification circuit 281 of this first processor 230 and this transfer circuit 280.In an embodiment of the present utility model, this transfer circuit 280 comprises a balancing circuitry 285, is electrically connected in this radio frequency signal processing circuit 270; And an attenuator 283, be electrically connected this balancing circuitry 285 and this power amplification circuit 281.
The circuit design drawing of the USB controller 220 of Fig. 8 illustration the utility model one embodiment.In an embodiment of the present utility model, a USB controller 220 has 7 butt, and its terminal numbering, signal name, classification and function are illustrated in table 1.
Table 1
Title |
Numbering |
Classification | Function |
VBUS |
|
1 |
Electric power |
The input of 5V voltage |
D- |
2 |
Simulation |
The usb data port |
D+ |
|
3 |
Simulation |
The usb data port |
ID |
|
4 |
Numeral |
OTG(On-The-Go) |
GND |
5,6,7 |
Ground connection |
Ground connection |
In an embodiment of the present utility model, this rfid interrogator 200 also comprises one first holding circuit 221, is electrically connected a power contact (VBUS) of a power terminal (VBUS) and this first processor 230 of a USB controller 220; And one second holding circuit 223, be electrically connected the data contacts (D+, D-) of a signal terminal (D+, D-) and this first processor 230 of a USB controller 220.
The distributing electric power figure of the rfid interrogator 200 of Fig. 9 illustration the utility model one embodiment.In an embodiment of the present utility model, this first micro USB connector 210 is a micro USB plug, and this second micro USB connector 110 is a micro USB socket.In an embodiment of the present utility model, this mobile phone 100 is configured to provide the electrical power for operation of this rfid interrogator 200.In an embodiment of the present utility model, when the first micro USB connector 210 of this rfid interrogator 200 inserted the second micro USB connector 110 of this mobile phone 100, this mobile phone 100 namely provided electrical power for operation to this rfid interrogator 200 via this second micro USB connector 110 and this first micro USB connector 210.As shown in Figure 9; this second holding circuit 223, this first processor 230, this radio frequency signal processing circuit 270, this oscillator 271, this power amplification circuit 281, this testing circuit 310, and the electrical power for operation of this commutation circuit 330 all from a USB controller 220, it is connected in the second micro USB connector 110 of this mobile phone 100 via this first micro USB connector 210.
The stereographic map of the first micro USB connector 210 of Figure 10 illustration the utility model one embodiment, the first micro USB connector 210 of Figure 11 illustration the utility model one embodiment and the stereographic map of circuit board 250.In an embodiment of the present utility model, this first micro USB connector 210 comprises a metal shell 211, this metal shell 211 comprises two root bead pin 213, and this leg 213 comprises a horizontal part 215 and an erection part 217, and this erection part 217 is connected in this horizontal part 215.In an embodiment of the present utility model, this circuit board 250 comprises two through holes that are arranged at the edge, the erection part 217 of this leg 213 is placed in this through hole, and be fixed on this circuit board 250 with scolder, so this circuit board 250 has less thickness with the combination of this first micro USB connector 210.
The stereographic map of the antenna plate 260 of Figure 12 illustration the utility model one embodiment.In an embodiment of the present utility model, the inverted F shaped antenna 261 of this antenna plate 260 comprises one first horizontal segment 263A; One second horizontal segment 263B is connected in this first horizontal segment 263A with vertical mode in fact; One the 3rd horizontal segment 263C is connected in this second horizontal segment 263B with vertical mode in fact; And a plurality of vertical sections 265, connect substrate and this first horizontal segment 263A, this second horizontal segment 263B and the 3rd horizontal segment 263C of this antenna plate 260.The advantage of this inverted F shaped antenna comprises that size is little, structure is thin, bandwidth, and not interfered by metal.
Technology of the present utility model directly is integrated in ultrahigh frequency (Ultra-high frequency with this first micro USB connector 210 (for example Type B plug), UHF) rfid interrogator 200, and realize USB OTG function at this rfid interrogator 200 in the lump, so this rfid interrogator 200 can be directly connected in this mobile phone 100.In an embodiment of the present utility model, this rfid interrogator 200 has been integrated this first processor 230 (a for example microcontroller), this radio frequency signal processing circuit 270, radio-frequency (RF) front-end circuit and this inverted F shaped antenna 261.In an embodiment of the present utility model, this radio-frequency (RF) front-end circuit combination transmits antenna and receiving antenna (is that the technology of putting is closed in the unit transmitting-receiving, monostatic technology), the feedback signal of RFID label is this inverted F shaped antenna 261 of feed-in then, and the balancing circuitry of this coupling mechanism 300 and this receiving circuit 290 then is connected in the detuner of this radio frequency signal processing circuit 270.
In an embodiment of the present utility model, this first processor 230 comprises the system firmware (firmware) of RFID, and its major function comprises the running of controlling this radio frequency signal processing circuit 270, and processing RF ID agreement.This first processor 230 is also controlled the function of other element, for example the function of this power amplification circuit 281, this commutation circuit 330, internal temperature sensor, analog/digital converter etc.In addition, this first processor 230 is handled and is transmitted/receive the usb communication of instruction.In an embodiment of the present utility model, this radio frequency signal processing circuit 270 produces a carrier signal from the wave of oscillation (frequency is between 860-960MHz) of this oscillator 271 (for example voltage-controlled oscillator), and itself and fundamental frequency signal are modulated (modulation) in order to transmit.This radio frequency signal processing circuit 270 is handled demodulation and the data decode of radiofrequency signal also according to the RFID agreement.
Technology contents of the present utility model and technical characterstic have disclosed as above, yet the utility model the technical staff in the technical field should be appreciated that, in not deviating from the utility model spirit and scope that appended claim defines, teaching of the present utility model and disclose and can do all replacements and modification.For example, above many technologies of Jie Shiing can diverse ways be implemented or are replaced with other technology, perhaps adopt the combination of above-mentioned dual mode.
In addition, composition, device, method or the step of the technology of the interest field of the present utility model specific embodiment that is not limited to above disclose, board, manufacturing, material.The utility model the technical staff in the technical field should be appreciated that, based on the utility model teaching and disclose composition, device, method or the step of technology, board, manufacturing, material, no matter existed now or developer in the future, it carries out the essence identical functions with the utility model embodiment announcement person in the identical mode of essence, and reach the identical result of essence, also can be used in the utility model.Therefore, following claim is in order to contain composition, device, method or the step in order to this type of technology, board, manufacturing, material.