CN203167016U

CN203167016U - Ultrahigh-frequency RFID mobile communication terminal

Info

Publication number: CN203167016U
Application number: CN2013200513018U
Authority: CN
Inventors: 文光俊; 马玉林; 李建
Original assignee: Guangdong Maxon Communication Co ltd; University of Electronic Science and Technology of China
Current assignee: Guangdong Maxon Communication Co ltd; University of Electronic Science and Technology of China
Priority date: 2013-01-30
Filing date: 2013-01-30
Publication date: 2013-08-28
Anticipated expiration: 2023-01-30

Abstract

The utility model discloses an ultrahigh-frequency RFID mobile communication terminal, specifically comprising a baseband chip unit, a mobile phone RF unit and an ultrahigh-frequency RFID read-write unit, wherein the ultrahigh-frequency RFID read-write unit is used for reading and writing electronic labels; and the baseband chip unit is used for processing radio frequency information, and controlling and coordinating the work of the ultrahigh-frequency RFID read-write unit. The mobile communication terminal provided by the utility model realizes the function of an ultrahigh-frequency RFID reader-writer by embedding the ultrahigh-frequency RFID read-write unit in a mainboard of a mobile phone, so that the mobile phone not only has the function of an ordinary mobile phone, but also has the function of the ultrahigh-frequency RFID reader-writer, thus the space can be saved, the cost can be reduced, and the mutual interference between two RF units can be effectively reduced, thereby realizing the miniaturization of equipment and high quality communication.

Description

A kind of ultrahigh frequency RFID mobile communication terminal

Technical field

The utility model belongs to the REID field, is specifically related to a kind of design of mobile communication terminal.

Background technology

Follow wideling popularize of this Internet of Things, and the development of large scale integrated circuit, network service, information security technology, (Radio Frequency Identification, RFID) application in business process is more and more widely for REID.For rfid system, different applications adopts different frequency, communication protocol and read-write technology.Hyper band (Ultra High Frequency, rfid system UHF) with its distinguish distance, many labels are distinguished technical advantages such as ability is strong simultaneously, have wide market application prospect.Meanwhile, passive ultra-high frequency EPC code tag is also low with its cost, plurality of advantages such as size is little, and decipherment distance is far away realized extensive application in important development fields such as logistics, supply chain management, U.S. Wal-Mart has just implemented the application of EPC on Retail commodity since 2004.In China; food-safety problem emerges in an endless stream; counterfeit and shoddy goods such as fake wine false smoke overflow, and the public is badly in need of a kind of technology or equipment comes product is carried out false proof tracing to the source, and businessman of an established trade mark also needs such equipment and technology to protect oneself brand and legitimate rights and interests.Numerous enterprises is all introduced the RFID technology in producing and managing now, and the false proof application of tracing to the source of EPC is in the fast-growing period.But businessman introduces after the RFID technology, has labeled EPC at commodity, and the not query facility inquiry of tracing to the source easily of the domestic consumer that buys commodity, this also is a conditionality factor that influences enterprise's applying RFID technology.

Mobile phone is being played the part of more and more important role in people's daily life, the function of mobile phone is also from just beginning simple voice call just towards diversification, intelligent direction development.Constantly perfect along with the continuous development of mobile phone industry and cell-phone function, people also constantly propose higher requirement, not only require multiple functional but also want that cube is little, low in energy consumption, low price.Namely be the inevitable outcome of technical development in the middle of the UHF read-write capability is integrated into mobile phone, be again the important embodiment of the market demand simultaneously, yet in order to make mobile phone have UHF rfid interrogator function, not only need UHF RFID read-write cell circuit is embedded in the cell phone mainboard, also need simultaneously to add UHF RFID antenna for mobile phone, this just needs extra a lot of space holds and the cost of increasing, and miniaturization and the low price of mobile phone formed great challenge.In addition, because two antennas exist simultaneously, the phase mutual interference between two radio frequency units is just inevitable, thereby communication quality has been caused very big influence, also the receiving sensitivity of equipment is had higher requirement simultaneously.

The utility model content

The utility model has mainly solved the problems referred to above that exist in the RFID technology application process, has proposed a kind of ultrahigh frequency RFID mobile communication terminal.

The technical solution adopted in the utility model is: a kind of ultrahigh frequency RFID mobile communication terminal, specifically comprise: baseband chip unit, mobile phone radio frequency unit and ultrahigh frequency RFID read-write cell, wherein, described ultrahigh frequency RFID read-write cell is used for the read-write of electronic tag; Described baseband chip unit is used for the processing of radio-frequency information, control and the work of coordination ultrahigh frequency RFID module for reading and writing.

Further, described ultrahigh frequency RFID mobile communication terminal also comprises an antenna and a radio-frequency antenna switch, wherein, described ultrahigh frequency RFID read-write cell and the described antenna of mobile phone radio frequency units shared, the described radio-frequency antenna switch of described baseband chip unit controls is finished selection and the switching of radio frequency unit.

Further, described ultrahigh frequency RFID mobile communication terminal is specially mobile phone.

The beneficial effects of the utility model: ultrahigh frequency RFID mobile communication terminal of the present utility model is by being embedded into the ultrahigh frequency RFID read-write cell in the cell phone mainboard, realized the ultrahigh frequency radio frequency identification (RFID) reader function at mobile phone, the user uses mobile phone just can read content in the EPC label that is attached on the commodity, and then can be easily to the commodity inquiry of tracing to the source, in addition, by introducing antenna multiplexed thought, make the time sharing shared antenna of mobile phone radio frequency unit and ultrahigh frequency RFID read-write cell, between the two, select and switch by a switch, both can conserve space, reduce cost, can reduce by two phase mutual interference between the radio frequency unit again effectively, thus miniaturization and the high quality communication of the equipment of realization.

Description of drawings

Fig. 1 is the ultrahigh frequency RFID mobile communication terminal structural representation of the utility model embodiment.

Fig. 2 is the ultrahigh frequency RFID read-write cell structural representation of the utility model embodiment.

Fig. 3 is the PR9000 internal structure schematic diagram of the utility model embodiment.

Fig. 4 is the ultrahigh frequency RFID read-write cell clock circuit structural representation of the utility model embodiment.

Fig. 5 is the ultrahigh frequency RFID read-write cell of the utility model embodiment translation circuit structural representation that transmits.

Fig. 6 is the ultrahigh frequency RFID read-write cell radio-frequency (RF) transmit-receive circuit structural representation of the utility model embodiment.

Fig. 7 is the duplexer fundamental diagram of the utility model embodiment.

Fig. 8 is the radio-frequency (RF) switch chip pin distribution map of the utility model embodiment.

Fig. 9 is the antenna switch circuit structural representation of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

A kind of ultrahigh frequency RFID mobile communication terminal that the utility model proposes, as shown in Figure 1, specifically comprise: baseband chip unit, mobile phone radio frequency unit and ultrahigh frequency RFID read-write cell, wherein, described ultrahigh frequency RFID read-write cell is used for the read-write of electronic tag; Described baseband chip unit is used for the processing of radio-frequency information, control and the work of coordination ultrahigh frequency RFID module for reading and writing.

Antenna multiplexed in order to realize, the ultrahigh frequency RFID mobile communication terminal here also comprises an antenna and a radio-frequency antenna switch, wherein, ultrahigh frequency RFID read-write cell and the described antenna of mobile phone radio frequency units shared, the described radio-frequency antenna switch of described baseband chip unit controls is finished selection and the switching of radio frequency unit.

The ultrahigh frequency RFID mobile communication terminal here is specifically as follows mobile phone as can be seen.

Also comprise power subsystem and peripheral unit among Fig. 1, each modular unit adopts the unified power supply of power subsystem, and peripheral unit comprises LCDs, keyboard and USB etc.Following emphasis describes UHF RFID read-write cell and antenna multiplexed principle and implementation method.

As shown in Figure 2, UHF RFID read-write cell (ultrahigh frequency RFID read-write cell) comprises UHF RFID read-write chip, coupler, Ba Lun and active crystal oscillator.Module communicates by UART interface and baseband chip unit, simultaneously in order to realize UHF RFID read-write control better, UHF RFID read-write cell externally provides two control of RESET and VEN pin, is respectively applied to UHF RFID read-write cell is resetted and enables.UHF RFID read-write chip is selected the PR9000 of PHYCHIPS company for use, this chip is supported ISO18000-6C/EPC Global Gen II agreement, and its inner integrated 80C52 microprocessor, 900MHz radio-frequency (RF) transmit-receive circuit and baseband modulation and demodulation circuit, volume is little, low in energy consumption, and operating frequency is in that 860MHz ~ 960MHz software is adjustable.

The PR9000 internal structure as shown in Figure 3, clock control module that PR9000 is inner integrated, be used for realizing that clock frequency is amplified and signal is purified, system can obtain the higher system operating frequency with lower clock frequency input, and the utility model adopts the external active crystal oscillator TTS18NS of 19.2MHz as the external clock input of system.In order to get access to local oscillation signal, system need finish frequency synthesis, and PR9000 inner integrated PFD and VCO just can realize so only need externally design corresponding phase locked loop filter.Phase locked loop filter commonly used is a kind of low pass filter, active and passive branch, passive phase locked loop filter generally is made up of resistance, electric capacity, active phase locked loop filter generally also adds amplifier, the radio-frequency component and the noise that are used for filtering PFD error voltage, thereby improve the spectral purity of VCO, improve the stability of system.Adopt the passive filter of being formed by resistance, electric capacity at this programme.UHF RFID read-write cell clock circuit schematic diagram as shown in Figure 4.

All be that form with differential signal is as input and output at PR9000 internal radio frequency transmitting terminal and receiving terminal, and antenna is the form place in circuit with single-ended signal, so just need a balanced-to-unblanced transformer, the utility model employing model is that the Ba Lun of 0900BL18B200 finishes the differential signal of PR9000 to the conversion of single-ended signal.UHF RFID read-write cell transmit the translation circuit structure as shown in Figure 5.

Present embodiment adopts duplexer, in order to improve the isolation of signal, uses directional coupler CP0603A942CL to handle receiving and transmitting signal.This programme has also used ∏ type attenuation network to reduce the carrier-in-interference of transmitting terminal at the differential received end in addition, has further improved receiving sensitivity.UHF RFID read-write cell radio-frequency (RF) transmit-receive circuit structure as shown in Figure 6.

As shown in Figure 7, duplexer belongs to transmit-receive sharing, uses an antenna to switch between mobile phone radio frequency unit and UHF RFID read-write cell.The TQP4M3019 that present embodiment employing insertion loss is little, low in energy consumption, volume is little is as the radio-frequency (RF) switch chip, and chip pin distributes as shown in Figure 8.The V1 of chip, V2, V3 pin connect the GPIO mouth of baseband chip respectively as the control end of sky line options, and table 1 has been listed the selection situation of antenna port of the various combination correspondence of V1, V2, V3 in detail.

Table 1

V1	V2	V3	ANT?RF1	ANT?RF2	ANT?RF3
						1	0	0	On	Off	Off
0	1	0	Off	On	Off
						0	0	1	Off	Off	On

The peripheral circuit connected mode of TQP4M3019 chip as shown in Figure 9.TQP4M3019 can provide the output of No. three antennas, and this programme has only used RF1 and the output of RF2 two-way.As shown in Figure 7, RF2 connects the RF signal end of UHF RFID read-write cell, and RF1 links to each other with receiving terminal with the emission of mobile phone radio frequency unit respectively by a duplexer, and duplexer is selected chip SAW B7647 for use.

Aspect algorithm design, adopt anti-collision algorithm on the one hand, mobile phone can be read and write a plurality of labels simultaneously; Realized UHF RFID read-write frequency on the other hand in that 860MHz ~ 960MHz software is adjustable, thereby can make corresponding adjustment neatly as required, guaranteed that system works is in optimum state.

Ultrahigh frequency RFID mobile communication terminal of the present utility model is by being embedded into the ultrahigh frequency RFID read-write cell in the cell phone mainboard, realized the ultrahigh frequency radio frequency identification (RFID) reader function at mobile phone, make it not only have the function of regular handset, also has UHF rfid interrogator function simultaneously, the user uses mobile phone just can read content in the EPC label that is attached on the commodity, and then can be easily to the commodity inquiry of tracing to the source, in addition, by introducing antenna multiplexed thought, make the time sharing shared antenna of mobile phone radio frequency unit and ultrahigh frequency RFID read-write cell, between the two, select and switch by a switch, both can conserve space, reduce cost, can reduce by two phase mutual interference between the radio frequency unit again effectively, thus miniaturization and the high quality communication of the equipment of realization.

Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present utility model, should to be understood that protection range of the present utility model is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from the utility model essence according to disclosed these technology enlightenments of the utility model, and these distortion and combination are still in protection range of the present utility model.

Claims

1. a ultrahigh frequency RFID mobile communication terminal is characterized in that, specifically comprises: baseband chip unit, mobile phone radio frequency unit and ultrahigh frequency RFID read-write cell, and wherein, described ultrahigh frequency RFID read-write cell is used for the read-write of electronic tag; Described baseband chip unit is used for the processing of radio-frequency information, control and the work of coordination ultrahigh frequency RFID module for reading and writing.

2. ultrahigh frequency RFID mobile communication terminal according to claim 1, it is characterized in that, described ultrahigh frequency RFID mobile communication terminal also comprises an antenna and a radio-frequency antenna switch, wherein, described ultrahigh frequency RFID read-write cell and the described antenna of mobile phone radio frequency units shared, the described radio-frequency antenna switch of described baseband chip unit controls is finished selection and the switching of radio frequency unit.

3. ultrahigh frequency RFID mobile communication terminal according to claim 1 and 2 is characterized in that, described ultrahigh frequency RFID mobile communication terminal is specially mobile phone.

4. ultrahigh frequency RFID mobile communication terminal according to claim 1 and 2 is characterized in that, described ultrahigh frequency RFID read-write cell communicates by UART interface and baseband chip unit.

5. ultrahigh frequency RFID mobile communication terminal according to claim 1 is characterized in that, described ultrahigh frequency RFID read-write cell specifically adopts the PR9000 chip.

6. ultrahigh frequency RFID mobile communication terminal according to claim 2 is characterized in that, described radio-frequency antenna switch is specifically realized by TQP4M3019.

7. ultrahigh frequency RFID mobile communication terminal according to claim 2 is characterized in that, also comprises for the power subsystem of giving baseband chip unit, mobile phone radio frequency unit, ultrahigh frequency RFID read-write cell and the power supply of radio-frequency antenna switch.

8. ultrahigh frequency RFID mobile communication terminal according to claim 2 is characterized in that, also comprises peripheral unit.