CN109614828A - A kind of RFID reader performance test methods, device and storage medium - Google Patents
A kind of RFID reader performance test methods, device and storage medium Download PDFInfo
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- CN109614828A CN109614828A CN201811321427.6A CN201811321427A CN109614828A CN 109614828 A CN109614828 A CN 109614828A CN 201811321427 A CN201811321427 A CN 201811321427A CN 109614828 A CN109614828 A CN 109614828A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0095—Testing the sensing arrangement, e.g. testing if a magnetic card reader, bar code reader, RFID interrogator or smart card reader functions properly
Abstract
The present invention relates to field of communication technology, a kind of RFID reader performance test methods, device and storage medium are disclosed, for realizing the automatic test of RFID reader performance, to promote accuracy and the testing efficiency of the test of RFID reader performance-based.The described method includes: obtaining calibration test item, calibration test is carried out to RFID reader to be tested；The power-adjustable gain of the RFID reader is adjusted according to calibration test result；Whether the target power of radiofrequency signal and the difference of actual power for judging the RFID reader transmission adjusted are less than threshold value；If so, selecting other test items to be tested, until all test items are completed.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of RFID reader performance test methods, device and storage
Medium.
Background technique
UHF RFID (penetrate by Ultra High Frequency Radio Frequency Identification, hyperfrequency
Frequency identification technology), it is the Radio Frequency Identification Technology based on 860-960MHz, is widely used in unmanned convenient cabinet, unmanned shop, storage
Make an inventory, Intelligent license-plate of vehicle identification etc. fields.Wherein, reader is the capital equipment for cooperating UHF RFID work, most basic function
It can be the acquisition to electronic tag data, storing data in electronic tag can also be read out or is written.In order to reduce
The various skimble-scamble UHF RFID reader inflow terminal fields of working index, cause Internet of Things or corresponding use environment work
Make unstable probability, therefore, it is necessary to test UHF RFID reader performance, therefore, how to realize RFID reader
The automatic test of performance is one and needs to solve to promote accuracy and the testing efficiency of the test of RFID reader performance-based
The technical issues of.
Summary of the invention
The embodiment of the present invention provides a kind of RFID reader performance test methods, device and storage medium, with realizing RFID
The automatic test of reader performance, to promote accuracy and the testing efficiency of the test of RFID reader performance-based.
In a first aspect, the embodiment of the invention provides a kind of RFID reader performance test methods, comprising:
Calibration test item is obtained, calibration test is carried out to RFID reader to be tested；
The power-adjustable gain of the RFID reader is adjusted according to calibration test result；
Judge the radiofrequency signal that the RFID reader adjusted is sent target power and actual power difference whether
Less than threshold value；
If so, selecting other test items to be tested, until all test items are completed.
Optionally, described that calibration test is carried out to the RFID reader, it specifically includes:
The parameter of the RFID reader is set according to the calibration test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
It is obtained according to the internal components of the actual power of the radiofrequency signal received and the RFID reader
The signal parameter of the radiofrequency signal obtains the calibration factor of the RFID reader；
Wherein, the calibration test result includes the calibration factor.
Optionally, the target power and practical function for the radiofrequency signal that the judgement RFID reader adjusted is sent
Whether the difference of rate is less than threshold value, specifically includes:
It obtains and sends power test item, the parameter of the RFID reader is set according to the transmission power test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
Obtain the actual power of the radiofrequency signal received；
Judge whether the difference of the target power and the actual power is less than threshold value.
Optionally, other described test items include receiving sensitivity test item, when the receiving sensitivity test item is tested
The described method includes:
Control the simulation label data packet that external signal emitter sends preset number to the RFID reader；
Obtain the number that the RFID reader correctly parses the simulation label data packet；
The preset number and the number are compared, the receiving sensitivity of the RFID reader is obtained.
Optionally, before the calibration factor for obtaining the RFID reader, the method also includes:
Control external signal emitter transformation working pattern；
The radiofrequency signal is received by the external signal emitter of conversion；
And analysis is carried out to the radiofrequency signal based on the external signal emitter and obtains the actual power.
Optionally, other described test items further include receiving and sending the reversed calibration test item of power, frequency tolerance test item, accounting for
With bandwidth test item, spectrum mask test item and RF envelope test item, each test item in other described test items is pressed
It is successively tested according to default testing sequence.
Optionally, if the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are more than or equal to
Threshold value, the method also includes:
Again it carries out the calibration test item to the RFID reader to test, if calibration test item test is resurveyed
When number reaches preset times, the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are still greater than
Equal to threshold value, then terminate to test.
Second aspect, the embodiment of the invention provides a kind of RFID reader performance testing devices, comprising:
Acquiring unit carries out calibration test to RFID reader to be tested for obtaining calibration test item；
Adjustment unit, for adjusting the power-adjustable gain of the RFID reader according to calibration test result；
Judging unit, the target power and reality of the radiofrequency signal for judging the RFID reader transmission adjusted
Whether the difference of power is less than threshold value；If so, selecting other test items to be tested, until all test items are completed.
Optionally, the acquiring unit, is used for:
The parameter of the RFID reader is set according to the calibration test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
It is obtained according to the internal components of the actual power of the radiofrequency signal received and the RFID reader
The signal parameter of the radiofrequency signal obtains the calibration factor of the RFID reader；
Wherein, the calibration test result includes the calibration factor.
Optionally, the judging unit, is also used to:
It obtains and sends power test item, the parameter of the RFID reader is set according to the transmission power test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
Obtain the actual power of the radiofrequency signal received；
Judge whether the difference of the target power and the actual power is less than threshold value.
Optionally, other described test items include receiving sensitivity test item, and the acquiring unit is also used to:
Control the simulation label data packet that external signal emitter sends preset number to the RFID reader；
Obtain the number that the RFID reader correctly parses the simulation label data packet；
The preset number and the number are compared, the receiving sensitivity of the RFID reader is obtained.
Optionally, the acquiring unit, is also used to:
Control external signal emitter transformation working pattern；
The radiofrequency signal is received by the external signal emitter of conversion；
And analysis is carried out to the radiofrequency signal based on the external signal emitter and obtains the actual power.
Optionally, other described test items further include receiving and sending the reversed calibration test item of power, frequency tolerance test item, accounting for
With bandwidth test item, spectrum mask test item and RF envelope test item, each test item in other described test items is pressed
It is successively tested according to default testing sequence.
Optionally, if the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are more than or equal to
Threshold value, the judging unit, is also used to:
Again it carries out the calibration test item to the RFID reader to test, if calibration test item test is resurveyed
When number reaches preset times, the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are still greater than
Equal to threshold value, then terminate to test.
The third aspect, the embodiment of the invention provides a kind of RFID reader performance testing devices, including at least one
Manage device and at least one processor, wherein the memory is stored with computer program, when described program is by the processing
When device executes, so that the step of processor executes method as described in relation to the first aspect.
Fourth aspect, the embodiment of the invention provides a kind of storage medium, the storage medium is stored with computer instruction,
When the computer instruction is run on computers, so that the step of computer executes method as described in relation to the first aspect.
In embodiments of the present invention, it is contemplated that in reader batch production process, there are tested reader individual performances
The influence of the factors such as difference, such as antenna, coupler, pcb board layout lamination causes tested reader to there is individual performance
Difference, therefore, RFID reader performance test methods provided in an embodiment of the present invention carry out calibration survey to RFID reader first
The test for trying item obtains compensation for calibrating errors, and the power-adjustable gain of RFID reader is then adjusted according to the compensation for calibrating errors of acquisition, with
The probability for reducing test inaccuracy caused by individual difference, then judges the radiofrequency signal that RFID reader adjusted is sent
Whether the difference of target power and actual power, which is less than threshold value, carries out sending the test of power test item, if so, selecting other surveys
Examination item is tested, until all test items are completed.So the automation for not only realizing RFID reader performance is surveyed
Examination, the also accuracy of promotion RFID reader performance-based test and testing efficiency.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, embodiment will be described below
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment.
Fig. 1 is a kind of application scenarios schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of RFID reader performance test methods flow chart provided in an embodiment of the present invention；
Fig. 3 is calibration test item test flow chart provided in an embodiment of the present invention；
Fig. 4 is a kind of matched curve schematic diagram provided in an embodiment of the present invention；
Fig. 5 is transmission power test item test flow chart provided in an embodiment of the present invention；
Fig. 6 is receiving sensitivity test item test flow chart provided in an embodiment of the present invention；
Fig. 7 is a kind of RFID reader performance testing device schematic diagram provided in an embodiment of the present invention；
Fig. 8 is another RFID reader performance testing device schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution of the present invention is clearly and completely described, it is clear that described embodiment is skill of the present invention
A part of the embodiment of art scheme, instead of all the embodiments.Based on the embodiment recorded in present specification, this field is general
Logical technical staff every other embodiment obtained without creative efforts, belongs to the technology of the present invention side
The range of case protection.
Part concept involved in the embodiment of the present invention is introduced below.
UHF RFID technique: i.e. super high frequency radio frequency identification technology (Ultra High Frequency Radio
Frequency Identification, abbreviation UHF RFID), it is the Radio Frequency Identification Technology based on 860-960MHz, answers extensively
It makes an inventory for unmanned convenient cabinet, unmanned shop, storage, the fields such as Intelligent license-plate of vehicle identification.RFID main hardware composition includes: read-write
Device and electronic tag.Reading or write-in of the reader for storing data in electronic tag, most basic function is to electronics mark
Sign the acquisition of data.Electronic tag is a kind of chip being made of coupling element, it can emit RFID label tag by included antenna
Signal.
RFID reader performance test methods in the embodiment of the present invention can be applied to application scenarios as shown in Figure 1,
In the scene, including reader to be tested, host, comprehensive test instrument, attenuator and multiple-path coupler, wherein reader and master
Machine can pass through serial ports UART (Universal AsynchronousReceiver/Transmitter, universal asynchronous receiving-transmitting transmission
Device) or the communication of other interface modes, host and comprehensive test instrument can pass through interface bus GPIB (General-Purpose
Interface Bus, general purpose interface bus) communication, attenuator is added between comprehensive test instrument and reader, avoids burning out equipment, according to
According to the antenna port quantity of reader to be tested, the coupler of corresponding port quantity is selected.
Wherein, comprehensive test instrument can be comprehensive tester, and the function of frequency spectrograph and signal source may be implemented, be also possible to it
The function that frequency spectrograph is played when testing the emitting performance of reader of his type, when testing reader receptivity from
To the comprehensive test instrument of the function of signal source.
Host can be it is any can be run according to program, automatic, high speed processing mass data terminal device, in this way
Terminal device such as server, computer, ipad etc., in host include test software and software development kit SDK, wherein survey
Trying software can be NI automated production test software, according to RFID reader performance test side provided in an embodiment of the present invention
When method tests RFID reader, NI automated production test software, which passes through, calls SDK software dynamic link library dll,
It connects and realizes that SDK software and measured piece directly pass through serial ports UART or other interfaces to the parameter configuration and state readback of reader
Mode communicates.
It should be noted that application scenarios mentioned above are merely for convenience of understanding spirit and principles of the present invention and showing
Out, the embodiment of the present invention is unrestricted in this regard.On the contrary, the embodiment of the present invention can be applied to applicable any field
Scape.
Below with reference to application scenarios shown in FIG. 1, to the RFID reader performance test methods in the embodiment of the present invention into
Row explanation.
As shown in Fig. 2, for a kind of RFID reader performance test methods provided in the embodiment of the present invention, comprising:
Step 201: obtaining calibration test item, calibration test is carried out to RFID reader to be tested；
Step 202: the power-adjustable gain of RFID reader is adjusted according to calibration test result；
Step 203: judging the target power for the radiofrequency signal that RFID reader adjusted is sent and the difference of actual power
Whether threshold value is less than, it is no to then follow the steps 205 if so then execute step 204；
Step 204: selecting other test items to be tested, until all test items are completed；
Step 205: the test of calibration test item being carried out to RFID reader again；
Step 206: if when resurveying number and reaching preset times of calibration test item test, the radio frequency that RFID reader is sent
The target power of signal and the difference of actual power are still greater than equal to threshold value, then terminate to test.
RFID reader performance test methods in the embodiment of the present invention can be applied to the performance of general RFID reader
Test, also can be applied to the performance test of UHF RFID reader.
In the embodiment of the present invention, each test item can be described as test and excitation again, such as calibration test item can be described as calibration again and survey
Examination excitation.The content of each test item by initialization textual form be loaded into NI automatic test software in, NI test software according to
The testing sequence of preset each test item executes each test item in this law embodiment.
In embodiments of the present invention, it is contemplated that in reader batch production process, there are tested reader individual performances
The influence of the factors such as difference, such as antenna, coupler, pcb board layout lamination causes tested reader to there is individual performance
Therefore difference in the embodiment of the present invention, carries out the calibration test item in calibration test, that is, step 201 to RFID reader first,
Compensation for calibrating errors is obtained, different calibration factors different RFID readers then is written according to the compensation for calibrating errors of acquisition, thus
Ensure the consistency of properties of product, and the test result after automatic correction compensation be only it is true as a result, particularly with
The power of the transmitting signal of RFID reader, if actual transmission power is widely different without automatic calibration function.
In embodiments of the present invention, host obtains calibration test item first, sends to RFID reader to be tested
Power forward calibration test, wherein specifically can be by Fig. 3 institute carrying out transmission power forward calibration test to RFID reader
The process stated is to execute:
Step 301: according to the calibration test item of acquisition, the parameter of RFID reader being configured；
Step 302: control RFID reader sends radiofrequency signal with target power；
Step 303: being obtained according to the internal components of the actual power of the radiofrequency signal received and RFID reader
The signal parameter of radiofrequency signal obtains the calibration factor of RFID reader；
Wherein, calibration test result includes calibration factor.
In embodiments of the present invention, host can set the parameter of RFID reader according to the calibration test item of acquisition
It sets, such as the antenna channels of selection RFID reader, the frequency point of RFID reader, and the yield value that setting is different is set, so
Control RFID reader sends radiofrequency signal with target power afterwards, and the radiofrequency signal that RFID reader is sent passes through RFID reading all the way
The antenna for writing device is launched, and is received by multiple-path coupler shown in FIG. 1, then enters comprehensive test instrument by attenuator, at this point,
Host can control comprehensive test instrument work in frequency spectrograph functional mode, be divided with will pass through comprehensive test instrument to the radiofrequency signal received
Analysis obtains the actual power of radiofrequency signal.
The radiofrequency signal another way that RFID reader is sent is output to via the coupled end of RFID reader inner couplings device
In wave detector inside RFID reader, envelope detection is carried out to the radiofrequency signal, obtains the voltage parameter of the radiofrequency signal, so
The voltage parameter is output to external analog-digital converter (ADC) afterwards, host can be communicated with external ADC, and then host from this
External ADC obtains corresponding ADC value.
In embodiments of the present invention, in step 201 can be according to calibration test item be obtained, it can be to RFID to be tested
Reader is carried out continuously multiple calibration test, multiple groups actual power and ADC value is obtained, such as shown in following table one, in step 201
In, 6 calibration tests, 6 groups of practical function of acquisition are carried out continuously to RFID reader to be tested according to calibration test item is obtained
Rate and ADC value:
Table one: the corresponding table of transmitting gain and actual power, ADC value
In table one, transmitting gain value is the yield value of the different RFID readers of setting, and is increased in the difference of setting
The lower actual power and ADC value for carrying out the acquisition of calibration test item of benefit value.Host can be respectively from the multiple of external ADC read test
ADC value and corresponding multiple actual power values are read from comprehensive test instrument, to obtain multiple groups actual power and ADC value, then
Using ADC value as abscissa, actual power is ordinate, fits the matched curve of linear equation with one unknown as shown in Figure 4, thus
The slope and values of intercept for calculating linear equation with one unknown are respectively 0.0483 and 7.7664.The slope and values of intercept are that RFID is read
The calibration factor of device is write, then the calibration factor for calculating the RFID reader obtained can be written to SDK and deposited accordingly by host
In device.
In embodiments of the present invention, after testing out the calibration factor of RFID reader, host can be according to calibration
Number calculates the calibration deviation of RFID reader, and then, the value being superimposed after calibration deviation according to target power passes through adjusting
Then adjustable gain device inside RFID reader judges to adjust to realize the adjusting of the power-adjustable gain to RFID reader
Whether the target power of radiofrequency signal and the difference of actual power that the RFID reader after whole is sent are less than threshold value, wherein step
203 can realize especially by process as shown in Figure 5:
Process shown in fig. 5, comprising:
Step 501: obtaining and send power test item, according to the parameter for sending power test item setting RFID reader；
Step 502: control RFID reader sends radiofrequency signal with target power；
Step 503: obtaining the actual power of the radiofrequency signal received；
Step 504: judging whether the difference of target power and actual power is less than threshold value.
I.e. in embodiments of the present invention, host can carry out transmission function after carrying out calibration test to RFID reader
Rate test, that is, obtain and send power test item, then according to the ginseng for sending the RFID reader after the setting of power test item is adjusted
Number such as frequency point, antenna and objective emission power, that is, target power open carrier wave and control carrier wave with target power transmitting carrier wave letter
Number i.e. radiofrequency signal.
Likewise, the carrier signal via RFID reader antenna emit after, can by external multiple-path coupler into
Enter comprehensive test instrument, and then the carrier signal is analyzed by comprehensive test instrument, obtain actual power, then compares actual power and mesh
Power is marked, judges whether the difference of actual power and target power is less than preset threshold value, if without departing from threshold range, then it is assumed that
The sending performance of RFID reader is met the requirements, then sends the completion of power test item, can also print corresponding test report.
In embodiments of the present invention, after sending power test item and completing, the test of other test items can also be carried out,
Such as carry out receiving sensitivity test item, the reversed calibration test item of power, frequency tolerance test item, occupied bandwidth test item, frequency
The test for composing the test items such as template test item and RF envelope test item, will hereafter be described in detail other test items.
It should be noted that the testing sequence of other test items can be configured according to actual needs.
If sending in power test, judge the difference of actual power and target power more than or equal to preset in step 203
Threshold value can then re-start the test of check test item and execute above-mentioned steps 201 again to step 203, if re-starting school
It tests test item test to reach preset number such as 3 times, the difference of actual power and target power is still greater than or is equal to preset
Threshold value, then it is assumed that there are problems for the RFID reader, and can print indicates RFID reader report of problems, and can tie
Beam test.
A kind of optional mode, in embodiments of the present invention, other test items further include receiving sensitivity test item, right
When RFID reader carries out the test of receiving sensitivity test item, it can be executed according to process shown in fig. 6:
Process shown in fig. 6 includes:
Step 601: control external signal emitter sends the simulation label data packet of preset number to RFID reader；
Step 602: obtaining the number of the correct analytic simulation label data packet of RFID reader；
Step 603: comparison preset number and the number obtain the receiving sensitivity of RFID reader.
In embodiments of the present invention, it is contemplated that receiving sensitivity is also one of important performance of RFID reader, therefore, this
The test item of the receiving sensitivity for testing RFID reader, i.e. receiving sensitivity has also been devised in method in inventive embodiments
Test item, wherein when carrying out the test of receiving sensitivity test item, host can control comprehensive test instrument transformation operating mode, in turn
Comprehensive test instrument is allowed to serve as signal source, wherein the external signal sending device in step 601 is the comprehensive test instrument in Fig. 1, or
Other equipment with spectrum analysis function and transmiting signal source.
The wave file of the simulation label signal write in advance can be loaded into comprehensive test instrument by host, regulate attenuator values,
In this way, the pad value at tab end to reader end is determining, and controlling comprehensive test instrument (can also be with 200 label signals per second
For other frequencies) data packet be sent to RFID reader, follow-on test 5s (i.e. 1000 simulation tag waveforms) then, is obtained
The number for the data packet for taking RFID reader correctly to parse compares the number of emitted number of data packets and correct parsing data packet
Then the packet bit error rate of mesh, the RFID reader parsing that can be obtained can be beaten to obtain the receiving sensitivity of RFID reader
Receiving sensitivity test report is printed, it is generally thought that the packet bit error rate of RFID reader parsing is lower than 10%, then it is assumed that pass through reception
Sensitivity test, otherwise it is assumed that RFID reader is not tested by receiving sensitivity.
So realize the automatic test to the receiving sensitivity of RFID reader by the above method, do not need according to
Rely any agreement such as Handshake Protocol that can test the receiving sensitivity of RFID reader.Further perfect RFID read-write
The performance test of device, and do not need to disconnect the equipment for test in the process for the receiving sensitivity test for carrying out RFID reader
Test such as comprehensive test instrument, it is only necessary to control the functional mode that comprehensive test instrument is transformed into signal source, and then realize the hair of RFID reader
It send highly integrated with received performance test realization.
A kind of optional mode, in embodiments of the present invention, other test items can also include that transmission power is reversely calibrated
Test, for testing the connectivity and standing-wave ratio of antenna.Wherein, the test of antenna connectivity refers to reversed in execution transmission power
After calibration, disconnected by the antenna of RFID reader port and connection, the ADC value of feedback be it is discrepant, sentenced according to difference
Whether the antenna port of disconnected RFID reader is connected to.
I.e. in the reversed calibration test of progress transmission power, the reversed calibration test item of the available transmission power of host, so
Afterwards according to the reversed calibration test item of transmission power, after test disconnects the antenna in RFID reader channel, the radiofrequency signal of transmitting is passed through
The ADC value that the coupled apparatus and wave detector and outside ADC crossed inside RFID reader export, and test do not disconnect RFID
The radiofrequency signal emitted when the antenna in reader channel is by the coupled apparatus and wave detector inside RFID reader and outside
The ADC value of portion ADC output, then comparison disconnects antenna and obtains ADC value later and disconnect the ADC value of acquisition before antenna, then
Whether it is connected to according to the antenna port of the diversity judgement RFID reader of above-mentioned two ADC value.
In embodiments of the present invention, in the reversed calibration test of progress transmission power, RFID reader company can also be controlled
It being connected on different antennas, such as above-mentioned identical mode, which calculates, obtains the ADC value that RFID reader is connected on different antennas,
The ADC value for calculating acquisition can be converted into the standing-wave ratio of RFID reader by reduction formula, to obtain RFID reader
Standing-wave ratio.
A kind of optional mode, in embodiments of the present invention, other test items can also include frequency tolerance test item,
In, frequency tolerance test also makes frequency deviation test, the same transmission power of process of frequency tolerance test, but is above threshold value and does not need weight
New calibration, direct misprint log, i.e. test process are as follows: setting frequency point -> configuration power -> day line options -> opening carrier wave ->
Frequency values -> data back is read on comprehensive test instrument to automatic test software -> print log, herein just not repeated description, frequency
The following formula of the calculating of rate tolerance (1):
Frequency tolerance=(practical frequency point-setting frequency point)/setting frequency point * 10^6 formula (1)
For example, the frequency point of SDK setting is 920.5MHz, carrier signal is equivalent to tone signal, and comprehensive test instrument tests reader
Carrier frequency be 920.49MHz, can be calculated by formula formula (1), the frequency tolerance of the test case is 10.86ppm, the survey
The frequency tolerance range for trying item is ± 20ppm, therefore the frequency tolerance test item passes through test.
A kind of optional mode, in embodiments of the present invention, other test items can also include occupied bandwidth test item, use
In test RFID reader make an inventory when radiofrequency signal occupied bandwidth, host obtain bandwidth test item after, according to bandwidth
Frequency point, transmission power, the antenna baseband parameter etc. of RFID reader is arranged in test item, then opens and makes an inventory, is protected by comprehensive test instrument
Frequency spectrum data is deposited, and passes through the automatic test software computation bandwidth value and printing test report i.e. test log in host.
Wherein, bandwidth calculation: band self-energy/apparent energy=0.99, it is assumed that a total of 1000 samplings in apparent energy
Point, then can calculate according to the following formula (2) and obtain the points that energy in this 1000 sampled points is greater than gross energy 99%
Then N i.e. in formula (2) is calculated further according to formula (3) and is obtained bandwidth:
Wherein, BW indicates bandwidth, and N indicates points of the energy greater than gross energy 99%, P in sampled pointiIndicate each sampling
The power of point.
A kind of optional mode, in embodiments of the present invention, other test items can also include spectrum mask test item, use
It is tested in the spectrum mask to test RFID reader, that is, Adjacent Carrier Leakage, process is similar with occupied bandwidth, and test is also to make an inventory
When modulated signal, comprehensive test instrument saves frequency spectrum data, and automatic test software algorithm analyzes the maximum spectrum in each channel
The power of component, each channel width are 250KHz (ISO/IEC 18000-6C standard regulation), and test result needs to meet:
The maximum power value of each channel should not be more than spectrum mask, and final result is exported by log form, under national standard
Spectrum mask test needs to meet: 40dB (the first neighboring trace), 60dB (the second neighboring trace).
A kind of optional mode, in embodiments of the present invention, other test items can also include RF envelope test item, penetrate
The test of frequency envelope be also modulated signal when making an inventory time domain waveform, when RF envelope is tested, need by the span of comprehensive test instrument by
Key is set as 0, so that comprehensive test instrument is in time domain measurement mode, and selects triggering Triger mode, after comprehensive test instrument saves triggering
Time domain data, is then transmitted to the analysis of automatic test software by gpib interface, and the test item of RF envelope specifically includes that modulation
Envelope tests (rising edge and failing edge), RF envelope up/down electrical testing, Wave anomaly test etc., and all test items are intended to full
Requirement under sufficient ISO/IEC18000-6C standard to modulated signal.Modulation envelope test and RF envelope up/down electrical testing are not
Same to be, what the former tested is modulated signal, and what the latter tested is signal when carrier wave ON/OFF is disconnected.
Based on the same inventive concept, a kind of RFID reader performance testing device, the dress are provided in the embodiment of the present invention
The specific implementation for the RFID reader performance test methods set can be found in the description of above method embodiment part, repeat place not
It repeats again, as shown in fig. 7, the device includes:
Acquiring unit 70 carries out calibration test to RFID reader to be tested for obtaining calibration test item；
Adjustment unit 71, for adjusting the power-adjustable gain of the RFID reader according to calibration test result；
Judging unit 72, the target power and reality of the radiofrequency signal for judging the RFID reader transmission adjusted
Whether the difference of border power is less than threshold value；If so, selecting other test items to be tested, until all test items are completed.
Optionally, the acquiring unit, is used for:
The parameter of the RFID reader is set according to the calibration test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
It is obtained according to the internal components of the actual power of the radiofrequency signal received and the RFID reader
The signal parameter of the radiofrequency signal obtains the calibration factor of the RFID reader；
Wherein, the calibration test result includes the calibration factor.
Optionally, the judging unit, is also used to:
It obtains and sends power test item, the parameter of the RFID reader is set according to the transmission power test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
Obtain the actual power of the radiofrequency signal received；
Judge whether the difference of the target power and the actual power is less than threshold value.
Optionally, other described test items include receiving sensitivity test item, and the acquiring unit is also used to:
Control the simulation label data packet that external signal emitter sends preset number to the RFID reader；
Obtain the number that the RFID reader correctly parses the simulation label data packet；
The preset number and the number are compared, the receiving sensitivity of the RFID reader is obtained.
Optionally, the acquiring unit, is also used to:
Control external signal emitter transformation working pattern；
The radiofrequency signal is received by the external signal emitter of conversion；
And analysis is carried out to the radiofrequency signal based on the external signal emitter and obtains the actual power.
Optionally, other described test items further include receiving and sending the reversed calibration test item of power, frequency tolerance test item, accounting for
With bandwidth test item, spectrum mask test item and RF envelope test item, each test item in other described test items is pressed
It is successively tested according to default testing sequence.
Optionally, if the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are more than or equal to
Threshold value, the judging unit, is also used to:
Again it carries out the calibration test item to the RFID reader to test, if calibration test item test is resurveyed
When number reaches preset times, the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are still greater than
Equal to threshold value, then terminate to test.
Based on the same inventive concept, the embodiment of the invention provides a kind of RFID reader performance testing devices, such as Fig. 8 institute
Show, including at least one processor 80 and at least one processor 81, wherein the memory 81 is stored with computer journey
Sequence, when described program is executed by the processor 80, so that the processor 80 is executed as described in the embodiment of the present invention
The step of RFID reader performance test methods.
Based on the same inventive concept, the embodiment of the invention provides a kind of storage medium, the storage medium is stored with meter
Calculation machine instruction, when the computer instruction is run on computers, so that computer executes such as RFID reader performance test
Method the step of.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (15)
1. a kind of RFID reader performance test methods characterized by comprising
Calibration test item is obtained, calibration test is carried out to RFID reader to be tested；
The power-adjustable gain of the RFID reader is adjusted according to calibration test result；
Whether the target power of radiofrequency signal and the difference of actual power for judging the RFID reader transmission adjusted are less than
Threshold value；
If so, selecting other test items to be tested, until all test items are completed.
2. the method as described in claim 1, which is characterized in that it is described that calibration test is carried out to the RFID reader, specifically
Include:
The parameter of the RFID reader is set according to the calibration test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
According to the acquisition of the internal components of the actual power of the radiofrequency signal received and the RFID reader
The signal parameter of radiofrequency signal obtains the calibration factor of the RFID reader；
Wherein, the calibration test result includes the calibration factor.
3. method according to claim 2, which is characterized in that the judgement RFID reader adjusted was sent penetrates
Whether the target power of frequency signal and the difference of actual power are less than threshold value, specifically include:
It obtains and sends power test item, the parameter of the RFID reader is set according to the transmission power test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
Obtain the actual power of the radiofrequency signal received；
Judge whether the difference of the target power and the actual power is less than threshold value.
4. method as claimed in any one of claims 1-3, which is characterized in that other described test items include receiving sensitivity
Test item, the receiving sensitivity test item test when the described method includes:
Control the simulation label data packet that external signal emitter sends preset number to the RFID reader；
Obtain the number that the RFID reader correctly parses the simulation label data packet；
The preset number and the number are compared, the receiving sensitivity of the RFID reader is obtained.
5. method as claimed in claim 4, which is characterized in that before the calibration factor for obtaining the RFID reader,
The method also includes:
Control external signal emitter transformation working pattern；
The radiofrequency signal is received by the external signal emitter of conversion；
And analysis is carried out to the radiofrequency signal based on the external signal emitter and obtains the actual power.
6. method as claimed in any one of claims 1-3, which is characterized in that other described test items further include receiving and sending function
The reversed calibration test item of rate, frequency tolerance test item, occupied bandwidth test item, spectrum mask test item and RF envelope test
, each test item in other described test items is successively tested according to default testing sequence.
7. the method as described in claim 1, which is characterized in that if the target function for the radiofrequency signal that the RFID reader is sent
The difference of rate and actual power is more than or equal to threshold value, the method also includes:
Again it carries out the calibration test item to the RFID reader to test, if number is resurveyed in calibration test item test
When reaching preset times, the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are still greater than and are equal to
Threshold value then terminates to test.
8. a kind of RFID reader performance testing device characterized by comprising
Acquiring unit carries out calibration test to RFID reader to be tested for obtaining calibration test item；
Adjustment unit, for adjusting the power-adjustable gain of the RFID reader according to calibration test result；
Judging unit, the target power and actual power of the radiofrequency signal for judging the RFID reader transmission adjusted
Difference whether be less than threshold value；If so, selecting other test items to be tested, until all test items are completed.
9. device as claimed in claim 8, which is characterized in that the acquiring unit is used for:
The parameter of the RFID reader is set according to the calibration test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
According to the acquisition of the internal components of the actual power of the radiofrequency signal received and the RFID reader
The signal parameter of radiofrequency signal obtains the calibration factor of the RFID reader；
Wherein, the calibration test result includes the calibration factor.
10. device as claimed in claim 9, which is characterized in that the judging unit is also used to:
It obtains and sends power test item, the parameter of the RFID reader is set according to the transmission power test item；
It controls the RFID reader and radiofrequency signal is sent with the target power；
Obtain the actual power of the radiofrequency signal received；
Judge whether the difference of the target power and the actual power is less than threshold value.
11. the device as described in any one of claim 8-10, which is characterized in that other described test items include that reception is sensitive
Test item is spent, the acquiring unit is also used to:
Control the simulation label data packet that external signal emitter sends preset number to the RFID reader；
Obtain the number that the RFID reader correctly parses the simulation label data packet；
The preset number and the number are compared, the receiving sensitivity of the RFID reader is obtained.
12. device as claimed in claim 11, which is characterized in that the acquiring unit is also used to:
Control external signal emitter transformation working pattern；
The radiofrequency signal is received by the external signal emitter of conversion；
And analysis is carried out to the radiofrequency signal based on the external signal emitter and obtains the actual power.
13. device as claimed in claim 8, which is characterized in that if the target for the radiofrequency signal that the RFID reader is sent
The difference of power and actual power is more than or equal to threshold value, and the judging unit is also used to:
Again it carries out the calibration test item to the RFID reader to test, if number is resurveyed in calibration test item test
When reaching preset times, the target power of radiofrequency signal and the difference of actual power that the RFID reader is sent are still greater than and are equal to
Threshold value then terminates to test.
14. a kind of RFID reader performance testing device, which is characterized in that including at least one processor and at least one
Memory, wherein the memory is stored with computer program, when described program is executed by the processor, so that described
Processor perform claim requires the step of any one of 1~7 the method.
15. a kind of storage medium, which is characterized in that the storage medium is stored with computer instruction, when the computer instruction
When running on computers, so that computer is executed such as the step of method as claimed in any one of claims 1 to 7.
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| CN113114386A (en) * | 2021-03-31 | 2021-07-13 | 北京万集科技股份有限公司 | Radio frequency parameter monitoring and early warning method and device for road side unit |
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