CN201654821U

CN201654821U - Radio frequency identification electronic tag simulator

Info

Publication number: CN201654821U
Application number: CN2010201716425U
Authority: CN
Inventors: 胡燕; 高林; 袁理; 耿力; 冯敬; 吴行军; 宜万兵; 林曦
Original assignee: CHINA ELECTRONIC TECHNOLOGY STANDARDIZATION INST; Beijing Tongfang Microelectronics Co Ltd
Current assignee: CHINA ELECTRONIC TECHNOLOGY STANDARDIZATION INST; Beijing Tongfang Microelectronics Co Ltd; China Electronics Standardization Institute
Priority date: 2010-04-21
Filing date: 2010-04-21
Publication date: 2010-11-24
Anticipated expiration: 2020-04-21

Abstract

The utility model relates to the technical field of radio frequency identification and provides a radio frequency identification electronic tag simulator to overcome the shortcoming that an electronic tag simulator in the prior art must obtain trigger of a reader-writer to be detected to return response data. The simulator comprises a radio frequency receiving unit, a base band receiving unit, a processor and a control unit; the radio frequency receiving unit receives communication data of an external reader-writer to be detected; the base band receiving unit performs base band processing on the communication data received by the radio frequency receiving unit; the processor receives communication data transmitted by the base band receiving unit for base band processing, transmits the communication data to a computer, responds to communication data of the external reader-writer to be detected and transmits returned communication data to the reader-writer to be detected via an electronic switch; and the control unit feeds back the communication data which are transmitted by the reader-writer to be detected and received by the processor and the communication data returned to the reader-writer to be detected by the processor to the computer for analysis. The simulator leads detection to be simpler and more convenient by adopting the mode that the electronic tag simulator directly responds to the reader-writer to be detected.

Description

A kind of radio frequency recognizing electronic label simulator

Technical field

The utility model is a kind of radio frequency recognizing electronic label simulator relevant for the REID field specifically.

Background technology

Radio-frequency (RF) identification (RFID) is a kind of short-range wireless communication technologies of low-power consumption, and the composition of rfid system comprises two parts at least: electronic tag (Tag) and read write line (Reader/Writer or Interrogator).

The data of definition format have been stored in the electronic tag, in actual applications, electronic tag is attached to object surfaces to be identified, the data that read write line can contactlessly read and discern in the electronic tag to be preserved realize management functions such as collection, processing and teletransmission to object identification information by computing machine and network.

Rfid system is an organic whole of realizing identification automatically and data acquisition function, need test normally carrying out of the work that could guarantee to the read write line in this rfid system, test comprises the measurement of radio frequency parameter, modulation parameter, time sequence parameter and command parameter.

Be illustrated in figure 1 as the structural representation of label simulator in the prior art, existing simulation electronic label can only send trigger command by read write line to be measured just can return response signal, thereby finish detection, only receive trigger pip (Trigger) Shi Caihui startup reflected signal device (backscatter device) the transmission response signal that read write line to be measured sends for AWG (Arbitrary Waveform Generator) (AWG) in the drawings read write line to be measured.

The problems of the prior art are, to the requirement of read write line to be measured than higher, need read write line to be measured to send trigger command, and not having any practical significance according to the response data that the trigger command of read write line to be measured returns, further detection read write line to be measured is sent quality of signals does not have reference value.

The utility model content

The utility model just is based on the problems referred to above and proposes, and its purpose is to provide a kind of RFID electronic tag simulator, is used for solving the problem that triggering that prior art electronic tag simulator need obtain read write line to be measured just can be returned response data signal.

Embodiment of the present utility model provides a kind of radio-frequency (RF) identification (RFID) electronic tag simulator in order to solve the problems of the technologies described above, and comprising:

Rf receiver unit, the communication data of reception, the described outside of demodulation read write line to be measured;

The base band receiving element, the communication data that described rf receiver unit is received carries out Base-Band Processing;

Processor, what receive that described base band receiving element sends carries out communication data after the Base-Band Processing, send this communication data to computing machine analysis by control module, and respond the communication data of described outside read write line to be measured, the communication data that returns is sent to electronic switch;

Described control module, the communication data that communication data that the read write line to be measured that described processor is received sends and described processor return to described read write line to be measured feeds back to described computing machine and analyzes;

Described electronic switch is used for the described communication data that returns is modulated, and sends to described outside read write line to be measured.

A further aspect according to electronic tag simulator described in the utility model, also comprise radio frequency attenuator, be connected with rf receiver unit with described electronic switch, the communication data signal energy that the read write line described to be measured that reduces to receive sends, it is saturated to prevent that described electronic tag simulator rf receiver unit from occurring.

The beneficial effect of the utility model embodiment is, the mode that directly responds read write line to be measured by the electronic tag simulator can be so that detect easier, and more accurate.

Description of drawings

Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, constitutes the application's a part, does not constitute qualification of the present utility model.In the accompanying drawings:

Shown in Figure 1 is the structural representation of electronic tag simulator in the prior art;

Figure 2 shows that the structural drawing of simulation electronic label among the utility model embodiment;

Figure 3 shows that the detailed structure view of the utility model embodiment simulation electronic label.

Embodiment

For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer,, the utility model is described in further details below in conjunction with embodiment and accompanying drawing.At this, exemplary embodiment of the present utility model and explanation thereof are used to explain the utility model, but not as to qualification of the present utility model.

Be illustrated in figure 2 as the structural drawing of simulation electronic label among the utility model embodiment.

Comprise rf receiver unit 201, be used to receive the communication data of outside read write line to be measured 206.Wherein, described rf receiver unit 201 is by the mode of envelope detection, the command signal of demodulation read write line 206 emissions to be measured, simulating signal after the demodulation is carried out processing such as filtering, amplification, again the baseband signal after the simulation process is sampled by A/D, be converted to digital baseband signal, give base band receiving element 202 and carry out the baseband digital signal processing.

Base band receiving element 202 is used for the communication data that described rf receiver unit 201 receives is carried out Base-Band Processing.Wherein, the baseband digital signal that rf receiver unit 201 is transmitted carries out a series of digital signal processing such as digital filtering, decoding, resolves to digital baseband data, and the digital baseband data that parsing is finished sends processor 203 to.

Processor 203, be used to receive the communication data that carries out Base-Band Processing that described base band receiving element 202 sends, send this communication data to control module 207, for example realize the control module that communicates with computing machine, wherein said computing machine is used for analysis mode electronic tag communication data that receives and the response data of returning, described processor also responds the communication data of described outside read write line 206 to be measured, and response data is sent to electronic switch 204.Wherein, processor 203 receives by the digital signal after 202 processing of base band receiving element, and according to the decoded information that obtains, produce the response signal of this electronic tag simulator---baseband modulation signal (DATA), with the read write line to be measured 206 of finishing protocol requirement and the communication process between the simulation electronic label.Described processor is controlled the Base-Band Processing that 202 pairs of described communication datas of described base band receiving element carry out described specified protocol according to the agreement of appointment in the configuration parameter that is sent by control module 207.

Described control module 207, the communication data that communication data that the read write line to be measured that described processor 203 is received sends and described processor 203 return to described read write line to be measured feeds back to described computing machine and analyzes.

Described electronic switch 204 is used for described response data is modulated, and sends to described outside read write line 206 to be measured.Wherein, the simulation electronic label of present embodiment is in when receiving coomand mode, electronic switch is in off-state, the simulation electronic label is in when read write line 206 to be measured returns response data information communication data, closed or the disconnection according to the control of baseband modulation signal (DATA) is to reach the purpose that back-modulation read write line 206 to be measured sends continuous carriers.

As a further embodiment of the present utility model, also comprise radio frequency attenuator 205, be connected with rf receiver unit 201 with described electronic switch 204, the communication data signal that the read write line described to be measured 206 that reduces to receive sends, it is saturated to prevent that described electronic tag simulator rf receiver unit from occurring.

Simulation electronic label of the present utility model has processor and the base band receiving element of oneself, can handle the communication data that described read write line to be measured sends, and generate communication data automatically and return to described read write line to be measured, do not need described read write line to be measured to trigger, therefore simulation electronic label of the present utility model is lower to the requirement of read write line to be measured, as long as this read write line to be measured can be communicated by letter normally and just can be detected.

Be illustrated in figure 3 as the detailed structure view of the utility model simulation electronic label.

Comprise antenna 301, matching network 302, envelope detection unit 303, the first low-pass filters, 304, the second low-pass filters 305, comparer 306, field programmable gate array (FPGA) chip 307 at processor and base band receiving element place, radio-frequency (RF) switch 308.

Wherein, described antenna 301 is used to receive and send the data-signal between described simulation electronic label and the read write line to be measured.

Described matching network 302 is used to carry out impedance matching, the described detection unit 303 that comprises is used for detecting the baseband signal of described data-signal, described envelope detection unit 303 can be made of schottky diode HSMS 2805 100pF electric capacity in parallel, time constant is that 0.1us is to 0.5us, first low-pass filter 304 and second low-pass filter 305 are used for the high fdrequency component of the described baseband signal of filtering, described first low-pass filter 304 can be made up of 130k resistance and 10pf electric capacity, described second low-pass filter 306 is made up of 130k resistance and 1uf electric capacity, described comparer 306 is used for the baseband signal of two low-pass filter outputs is subtracted each other, import described fpga chip 307 then, described fpga chip 307 produces response data signal and notifies described radio-frequency (RF) switch 308, described radio-frequency (RF) switch is a single-pole double-throw switch (SPDT), in order to guarantee enough depth of modulation, difference ground connection and unsettled, protocol parameters such as electric parameters such as described radio-frequency (RF) switch 308 obtains the backreflection modulation waveform from described fpga chip 307, wherein all times of return and command format are controlled by the base band receiving element in the fpga chip 307.

The beneficial effects of the utility model are, the utility model does not need read write line to be measured to send the data-signal that trigger pip just can respond this read write line to be measured, can return to computing machine by the simulation electronic label and to receive and the communication data that sends, can obtain more fully testing result as the parameter of Computer Analysis read write line performance to be measured.

Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is an embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. radio frequency recognizing electronic label simulator is characterized in that comprising:

2. electronic tag simulator according to claim 1, it is characterized in that, also comprise radio frequency attenuator, be connected with rf receiver unit with described electronic switch, the communication data signal energy that the read write line described to be measured that reduces to receive sends, prevent that the signal power that receives is excessive, rf receiver unit occurs saturated.