CN106027170B - The digital miniaturization radio equipment automatic testing equipment of one kind and system - Google Patents
The digital miniaturization radio equipment automatic testing equipment of one kind and system Download PDFInfo
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- CN106027170B CN106027170B CN201610355422.XA CN201610355422A CN106027170B CN 106027170 B CN106027170 B CN 106027170B CN 201610355422 A CN201610355422 A CN 201610355422A CN 106027170 B CN106027170 B CN 106027170B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses a kind of radio equipment automatic testing equipment and system, described device includes interface adapter and the radio equipment auto testing instrument using general test instrument interface；The radio equipment auto testing instrument includes：Master control borad, digital intermediate frequency plate, audio board, rf board, directional couple module, display input module and self-powered module；The system comprises calibration subsystem, test-schedule editor subsystem, System of Quality Control and above-mentioned radio equipment automatic testing equipments.Using radio equipment auto testing instrument mating interface adapter, can be tested in test site by simply connecting, using digital processing method so that analog device greatly reduces so that whole system is small, easy to carry.
Description
Technical field
The present invention relates to automatization testing technique fields, more particularly to a kind of digital miniaturization radio equipment to test automatically
Device and test system.
Background technology
All there is the phenomenon that decline of radio equipment performance leads to system communication failure in many naval vessels, it is therefore desirable to be set to channel
It is standby to carry out radio performance test.
But the performance detection for carrying out radio equipment on naval vessels at present needs to use many market general test instruments,
Including a variety of instrument such as high-power power meter, signal source, frequency spectrograph, Network Analyzer.These instrument functions are complete, in addition to having
It tests outside the required function of radio equipment, also other functions unwanted when testing radio equipment.These redundancy features,
So that these instrument volumes are big, weight weight, it is not easy to outgoing carrying.
There is an urgent need for design and develop a miniaturization, portable radio equipment automatic test equipment as a result,.
Invention content
In view of this, the present invention provides a kind of digital miniaturization radio equipment automatic testing equipment and test system,
Using radio equipment auto testing instrument mating interface adapter, it can be tested, be adopted by simply connecting in test site
With digital processing method so that analog device greatly reduces so that whole system is small, easy to carry.
In order to solve the above-mentioned technical problem, the invention is realized in this way：
A kind of radio equipment automatic testing equipment, including the channel of interface adapter and use general test instrument interface are set
Standby auto testing instrument；The radio equipment auto testing instrument includes：Master control borad, digital intermediate frequency plate, audio board, rf board, orientation
Coupling module, display input module and self-powered module；Embedded master control borad connects audio board by digital intermediate frequency plate and penetrates
Frequency plate, rf board connect directional couple module, and master control borad is also connected with display input module；The audio port that audio board provides is by connecing
Mouth adapter connection is tested the audio port of radio equipment；The control mouth that master control borad provides is connected by interface adapter and is tested channel
The control mouth of equipment；Directional couple module provides two antenna/loading interfaces and two radio frequency mouths, two antenna/loading interfaces
For connecting load or corresponding wave band antenna, two radio frequency mouths are respectively used to connect the radio frequency that corresponding wave band is tested radio equipment
Mouthful；The corresponding wave band includes shortwave and ultrashort wave；
The directional couple module includes ultrashort wave coupler and shortwave coupler, and the rf board includes switching group and penetrates
Frequency treatment channel；Radio frequency processing channel connects digital intermediate frequency plate, and connects ultrashort wave coupler and shortwave coupling by switching group
Device；The switching group is used to switch the connection of digital intermediate frequency plate, radio frequency processing channel and ultrashort wave coupler and shortwave coupler
Relationship；Shortwave coupler connects the corresponding antenna/loading interfaces of shortwave and radio frequency mouth, and ultrashort wave coupler connects ultrashort wave and corresponds to
Antenna/loading interfaces and radio frequency mouth；The ultrashort wave coupler and shortwave coupler are used for will be from the signal coupling of rf board
Conjunction is gone out, and the radiofrequency signal from tested radio equipment is divided into two parts, a part introduces rf board, and another part introduces day
Line/loading interfaces；
Master control borad is arranged by control mouth is tested radio equipment state；According to from external test script or according to display
The test script that the input of input module is generated generates test signal and is transferred to digital intermediate frequency plate, and digital intermediate frequency plate is according to survey
Trial signal generates digital signal and is converted to analog signal, is sent to audio board or rf board carries out signal condition, through audio board
Signal after conditioning is exported by audio port to tested radio equipment, and the signal through rf board conditioning is by radio frequency mouth to tested letter
Road equipment output；The output signal generated after being tested radio equipment processing reaches digital intermediate frequency plate after being adjusted via audio board,
Or via digital intermediate frequency plate is reached after the sampling of directional couple module and the adjusting of rf board, digital intermediate frequency plate completes the mould of signal
Quasi- digital conversion, signal processing simultaneously carry out test index calculating, and result of calculation is then transferred to master control borad, is controlled by master control borad
Display input module is shown；
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.
Preferably, the digital intermediate frequency plate is realized using FPGA, and fpga logic is divided into transmitter test cell and is connect
Receipts machine test cell；
Transmitter test cell generates digital signal, is converted to by audio board according to the test signal from master control borad
It is sent to tested radio equipment after audio signal；The radiofrequency signal of tested radio equipment transmitter output, by directional coupler coupling
A part of signal transmission is closed out to return in number by rf board progress low-pass filtering and after doing a power adjustment to rf board
The transmitting test processes unit of frequency plate；The method that the transmitting test processes unit further uses bandpass sampling, directly acquisition are come
From the radiofrequency signal of rf board, digital signal is converted thereof into, digital method is used in combination to carry out automatic gain to transformed signal
The processing that control, quadrature frequency conversion, filtering extraction, demodulation calculate is completed to be tested radio equipment transmitter test；
Receiver test unit generates the orthogonal number of two-way according to the test signal from master control borad, using digital method
Signal, then carry out digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion processing after, through rf board improve power
And it exports to tested radio equipment；The audio signal that the receiver of tested radio equipment generates returns to digital intermediate frequency via audio board
The receiver test unit of plate；The receiver test unit further carries out the meter of test index by after audio signal digitizing
It calculates, completes radio equipment receiver test.
Preferably, the transmitter test cell of the FPGA and receiver test unit share meter when executing testing process
Module is calculated, the computing module includes automatic growth control module, digital interpolative filter module, filtering extraction module, demodulation meter
Calculate module, quadrature frequency conversion module and digital orthometric up-conversion module.
Preferably, the switching group in the rf board includes the one 1 point of 2 switch, the 2nd 1 point of 2 switch, the 3rd 1 point of 2 switch
It is switched with the 4th 1 point 2；Radio frequency processing channel includes output treatment channel and input processing channel；
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the 3rd 1 point of 2 switch
Second end；The coupled end of ultrashort wave directional coupler connects the third end of the one 1 point of 2 switch, and isolation end connects the 3rd 1 point 2
The third end of switch；The first end of one 1 point of 2 switch connects the first end of the 2nd 1 point of 2 switch, second switched for the 2nd 1 point 2
The second end of the 4th 1 point of 2 switch of end connection, the third of the 2nd 1 point of 2 switch are terminated into input processing channel；4th 1 point of 2 switch
The 1st terminate into output treatment channel；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate；The output processing is logical
Road includes automatic level controller ALC, 90dB/10dB programmable step attenuator being sequentially connected in series and filter group；ALC connection numbers
Word IF board, filter group connect the first end of the 4th 1 point of 2 switch；The input processing channel includes 20dB attenuators and
51 point of 2 switch；The input terminal of 20dB attenuators connects the third end of the 2nd 1 point of 2 switch, the output end connection of 20dB attenuators
The second end of 5th 1 point of 2 switch；The first end of 5th 1 point of 2 switch accesses digital intermediate frequency plate；4th 1 point 2 switch the 3rd end and
It draws this rf board and forms Insertion Loss isolation degree test dual-port in the third end of 5th 1 point of 2 switch；All 1 point of 2 switches receive number
The control of IF board；
When testing the transmission power, frequency accuracy and modulation quality of radio equipment, if input signal is shortwave frequency
Segment signal, then digital intermediate frequency plate according to frequency range be arranged 1 point of 2 switching group, the coupled signal of shortwave directional coupler is input to
20dB attenuators carry out signal decaying, and the signal after decaying is input to digital intermediate frequency plate by the 5th 1 point of 2 switch；If input
Signal is ultrashort wave frequency band signal, then 1 point of 2 switching group is arranged according to frequency range in digital intermediate frequency plate, by ultrashort wave directional coupler
Coupled signal is input to 20dB attenuators and carries out signal decaying, and the signal after decaying is input to by the 5th 1 point of 2 switch in number
Frequency plate；
When test radio equipment standing-wave ratio when, if input signal be shortwave frequency band signals, digital intermediate frequency plate according to
1 point of 2 switching group is arranged in frequency range, and the isolation end of shortwave directional coupler is directly connected to digital intermediate frequency plate；If input signal
For ultrashort wave frequency band signal, then digital intermediate frequency plate is according to frequency range 1 point of 2 switching group of setting, by the isolation of ultrashort wave directional coupler
End is directly connected to digital intermediate frequency plate；
When test radio equipment receiver sensitivity and receiver dynamic range when, digital intermediate frequency plate output signal into
Enter ALC and carry out algorithm for power modulation, then the fixed value of power adjustment to 10dBm needs program-controlled using 90dB/10dB according to test
Step attenuator attenuates the signal to the range of 10dBm~-80dBm；The filtered device group of signal after decaying carries out signal filter
Corresponding shortwave directional coupler is chosen by 1 point of 2 switching group after wave or ultrashort wave directional coupler carries out coupling output,
Complete receiver sensitivity and receiver dynamic range test.
Preferably, the master control borad has prestored multiple independent test modules, and each test module corresponds to a test item
Mesh, each test module correspond to a visual icon；Master control borad has also prestored multiple control statements, each control statement pair
Answer a visual icon；When manual test, master control borad receives selection of the tester to test event, and utilizes test
Control statement that personnel choose and it is ordered execute sequence, to test event carry out sequence execution, to realize test event
Control；When automatic test, master control borad is automatic to execute according to the predetermined test event sequence of test script；It executes every
When a test event, test signal is sent to digital intermediate frequency plate, digital intermediate frequency plate is according to test signal by calling shared meter
Calculate the execution that module realizes test event.
The present invention also provides a kind of radio equipment Auto-Test Systems, including：Calibrate subsystem, test-schedule editor's
System, System of Quality Control further include any one radio equipment automatic testing equipment as previously described；Calibrate subsystem, matter
Buret manages the radio equipment auto testing instrument in subsystem and planning editor's subsystem connecting channel equipment automatic testing equipment；
The radio equipment auto testing instrument carries out self calibration according to the self calibration file for carrying out self calibration subsystem；It receives and surveys
The basis that examination planning editor's subsystem is sent is tested the test script that radio equipment type is planned, passes through testing results script pair
The tested radio equipment of current type is tested；Complete test after, by the test result file of tested radio equipment preserve to
System of Quality Control is completed the statistical analysis of test result by System of Quality Control.
Preferably, when being calibrated using the calibration subsystem, the program-controlled spectrum analyzer of radio equipment auto testing instrument, simulation
Signal source and power meter calibrate the transmitter and receiver of its own：
When calibration frequency accuracy, the transmitter and spectrum analyzer of radio equipment auto testing instrument are in running order,
The transmitting signal of radio equipment auto testing instrument is output to spectrum analyzer；Emission signal frequency is adjusted, spectrum analyzer is made
The signal frequency measured is consistent with nominal frequency value, to complete to use Spectrum Analyzer Calibration radio equipment auto testing instrument frequency
Process；
When calibrating power accuracy, the power of power meter calibration spectrum analyzer and simulation signal generator is used first, then is made
With the power of simulation signal generator and Spectrum Analyzer Calibration radio equipment auto testing instrument, specifically comprise the following steps：
(1) power of simulation signal generator is demarcated
Radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator transmitting setting performance number a1, difference
The signal of frequency, the Frequency point for emitting signal are denoted as fn, n=1,2 ..., N, N is positive integer；For Frequency point fn, by power meter
Measure the transmission power data b1 of simulation signal generatorfn, the value measured using power meter is actual value, then Frequency point fnUnder, simulation letter
Number source output power error is d1fn=a1-b1fn；
(2) receiver power of radio equipment auto testing instrument is calibrated
The output frequency of the program-controlled simulation signal generator of radio equipment auto testing instrument is fn, output power be set as c1+d1fn,
C1 be desired simulation signal generator real output, use the power in radio equipment auto testing instrument measure analog signals source for
p1fn；Then Frequency point fnUnder, auto testing instrument receiver power error d2fn=p1fn-c1；N is enabled to take all over 1~N, in self calibration text
By d2 in reception errors table in partfnWith Frequency point fnCorresponding storage；
(3) power of spectrum analyzer is demarcated
The output frequency of the program-controlled simulation signal generator of radio equipment auto testing instrument is fn, output power be set as c1+d1fn,
Use the power of spectrum analyzer measure analog signals source output signal for e1fn；Then Frequency point fnUnder, the power of spectrum analyzer
Measurement error is d3fn=e1fn-c1；It enables n take all over 1~N, obtains the corresponding spectrum analyzer power measurement of each Frequency point and miss
Difference；
(4) transmitter power of radio equipment auto testing instrument is calibrated
The transmitter output frequency of radio equipment auto testing instrument is fn, power p3mSignal to spectrum analyzer, by
The power that spectrum analyzer measures signal is denoted as g(p3m-fn), then the real power of current demand signal is p2(fn-m)=g(p3m-fn)-d3fn；
It will setting frequency values fn, setting performance number p3mWith corresponding actual value p2(fn-m)Correspondence preserves；
It enables n take all over 1~N, m is enabled to take all over 1~M, M is positive integer, then calibration obtains under various signal frequencies and power condition
A transmitter power calibrate two-dimensional data table.
Advantageous effect：
(1) present invention employs digital processing method, filter, frequency mixer, frequency synthesizer that conventional instrument uses etc.
Analog device greatly reduces, and effectively reduces the weight of test instrumentation, coordinates the operation tested and provided for radio equipment soft
Part makes radio equipment test become more efficiently.
(2) radio equipment auto testing instrument mating interface adapter is used, in test site by simply connecting
It is tested, and also increases the versatility of radio equipment auto testing instrument.
(3) present invention employs many miniaturization measures：First, completing the calculating of all signals by digital intermediate frequency plate, use
Digital form completes more signal processings, reduces the analog device for occupying volume, audio board and rf board no longer into
Row signal calculates, and realizes the miniaturization of audio board and rf board；Second is that master control borad uses embedded main control board, reduce general
The volume of the devices such as master control borad CPU, memory, while master control borad is that the carrier of running software and display screen are controlled with external
Interface
(4) present invention devises antenna/loading interfaces in directional couple part, and tested radio equipment is sent by radio frequency mouth
Radiofrequency signal be divided into two parts, a portion introduces rf board, and another part leads to load by antenna/loading interfaces
Or corresponding wave band antenna, and dissipate, it can prevent excessive energy from entering rf board in this way, the device of rf board is caused to damage
Wound avoids using built-in attenuator, reduces volume, alleviate weight, but also when test the state of tested radio equipment with
State consistency when normal work.
The test that (5) radio equipment auto testing instruments may be implemented radio equipment transmitting and receive, and can fit
For two kinds of equipment of ultrashort wave and shortwave, the scope of application is extended.The preferred embodiment of the present invention to short-wave signal and super
One of the characteristics of short-wave signal processing is exactly to realize shortwave and the shared attenuator of ultrashort wave signals by switching group；This hair
The two of bright the characteristics of handling short-wave signal and ultrashort wave signals exactly realize shortwave by switching group and ultrashort wave signals are total
With an ALC and programmable attenuator.
(6) present invention increases rechargeable battery in a device, and the equipment that can guarantee the present invention is no longer restricted in field testing
It is provided in power supply, increases the portability of field testing.
Description of the drawings
Fig. 1 is the composition frame chart of the digital miniaturization radio equipment Auto-Test System of the present invention；
Fig. 2 is the composition frame chart of the digital miniaturization radio equipment automatic testing equipment of the present invention；
Fig. 3 is radio equipment auto testing instrument, is tested radio equipment, the connection figure of interface adapter three；
Fig. 4 is the composition frame chart of directional couple module and rf board；
Fig. 5 is the composition frame chart of rf board in present pre-ferred embodiments；
Fig. 6 is that the function module of software forms；
Fig. 7 is the self-calibration process of auto testing instrument；(a) auto testing instrument frequency calibration；(b) analog signal source calibration；
(c) auto testing instrument receiver power is calibrated；(d) Spectrum Analyzer Calibration；(e) auto testing instrument transmitter power is calibrated.
Specific implementation mode
The present invention will now be described in detail with reference to the accompanying drawings and examples.
The present invention provides a kind of digital miniaturization radio equipment automatic testing equipment and systems.Fig. 1 forms for system
Block diagram, as shown in Figure 1 comprising radio equipment automatic testing equipment, calibration subsystem, test-schedule editor subsystem and quality
Manage subsystem.Radio equipment automatic testing equipment includes radio equipment auto testing instrument and interface adapter.Wherein, calibration
System, System of Quality Control, planning editor's subsystem and interface adapter are all connected with radio equipment auto testing instrument.
Radio equipment auto testing instrument：For being tested automatically all kinds of tested radio equipments.Its basis carrys out self calibration
The self calibration file of subsystem carries out self calibration, and calibration file is directed into radio equipment auto testing instrument after calibration.The channel
Equipment auto testing instrument receives the basis that test-schedule editor's subsystem is sent and is tested the test foot that radio equipment type is planned
This, tests the tested radio equipment of current type by automatic running test script；After completing test, by tested channel
The test result file of equipment is preserved to System of Quality Control, and the statistical of test result is completed by System of Quality Control
Analysis.
Interface adapter：Radio equipment auto testing instrument uses general test instrument interface, with connecing for tested radio equipment
Mouth connection is inconvenient.Interface adapter makes the connection of radio equipment auto testing instrument and tested radio equipment become convenient, and makes
Obtaining radio equipment auto testing instrument more has compatibility.
Calibrate subsystem：Spectrum analyzer, simulation signal generator and power meter are used when calibration, are realized automatic to radio equipment
The calibration of the frequency accuracy, power accuracy of the transmitter and receiver of tester.
Test-schedule editor's subsystem：Since tested radio equipment type is various, test method is had nothing in common with each other, therefore, this
Invention is finally downloaded to letter using the test-schedule perform script of all kinds of tested radio equipments of test-schedule editor subsystem editor
Road equipment auto testing instrument completes the execution of script by it.
System of Quality Control：After radio equipment auto testing instrument completes test, by the test of each tested radio equipment
Destination file is preserved to System of Quality Control, and the statistical analysis of test result, and browsable each test channel are completed by it
The test result of equipment.
Above-mentioned test-schedule editor subsystem and System of Quality Control can rely on the software platform of computer, profit
With Computerized Editing test-schedule file and management, analysis test result.
Above is exactly the function of each component part of this system.Radio equipment auto testing instrument is described in detail first below and connects
The specific implementation of mouth adapter.
As shown in Fig. 2, the radio equipment auto testing instrument in radio equipment automatic testing equipment specifically includes：Master control borad,
Digital intermediate frequency plate, audio board, rf board, directional couple module, display input module and self-powered module.The connection of each module is closed
System is：Master control borad connects audio board and rf board by digital intermediate frequency plate, and rf board connects directional couple module, and master control borad also connects
Connect display input module.Audio board provides one group of audio port (such as Fig. 3, an input audio port, an output audio port) conduct
The audio port of the radio equipment auto testing instrument, the audio port connect the audio port for being tested radio equipment by interface adapter.
Master control borad provides control mouth of the control mouth as the radio equipment auto testing instrument, which connects quilt by interface adapter
Survey the control mouth of radio equipment.Directional couple module provides two antenna/loading interfaces and two radio frequency mouths, two antennas/negative
It carries interface and is respectively used to connect the tested radio equipment of corresponding wave band for connecting load or corresponding wave band antenna, two radio frequency mouths
Radio frequency mouth.
Corresponding wave band described herein includes shortwave and ultrashort wave.Shortwave and ultrashort wave frequency rate difference, traditional radio equipment
Typically designed according to two frequency ranges of shortwave and ultrashort wave.For radio equipment tester, two frequency ranges are separated, are made
Two tester some waste of resource.The present invention digitally realizes most of to be suitable for shortwave and ultrashort wave frequency band
Processing, then for shortwave frequency range and ultrashort wave frequency band, tester signal process part is identical, and the difference of two frequency ranges is only
At the coupling of radiofrequency signal.There are ripe shortwave coupler and ultrashort wave coupler at present, two kinds of couplers are passed through into hilted broadsword
Commutator is connect with signal process part, and support of the timesharing to shortwave frequency range, ultrashort wave frequency band may be implemented, reduce
The requirement of coupler bandwidth.
Therefore, as shown in figure 4, directional couple module includes ultrashort wave coupler and shortwave coupler, rf board includes opening
Pass group and radio frequency processing channel.Radio frequency processing channel connects digital intermediate frequency plate, and radio frequency processing channel is connected by switching group and surpassed
Shortwave coupler and shortwave coupler；The switching group is for switching digital intermediate frequency plate, radio frequency processing channel and ultrashort wave coupler
With the connected relation of shortwave coupler.Shortwave coupler connects the corresponding antenna/loading interfaces of shortwave and radio frequency mouth, ultrashort wave coupling
Clutch connects the corresponding antenna/loading interfaces of ultrashort wave and radio frequency mouth；The radio frequency mouth connection of the directional couple module as previously described
Tested radio equipment, antenna/loading interfaces connection load or corresponding wave band antenna.Ultrashort wave coupler and shortwave coupler are in the future
It is coupled out from the signal of rf board by radio frequency mouth, tested radio equipment is divided into two by the radiofrequency signal that radio frequency mouth is sent
Part, a portion introduce rf board, and another part leads to load or corresponding wave band antenna by antenna/loading interfaces,
And dissipate, it can prevent excessive energy from entering rf board in this way, cause the device damage of rf board.
The working method of the tester is：The radio equipment state that is tested (transmitter work is arranged by control mouth for master control borad
Or operation of receiver), according to from external test script or according to the test script for showing that the input of input module is generated
It generates test signal and is transferred to digital intermediate frequency plate, digital intermediate frequency plate generates digital signal according to test signal and is converted to simulation letter
Number, it is sent to audio board or rf board carries out signal condition, audio board is then sent to if it is test transmitter, if it is test
Receiver is then sent to rf board；Signal after audio board improves is exported by audio port to tested radio equipment, through radio frequency
The signal of plate conditioning is exported by radio frequency mouth to tested radio equipment；The output signal warp generated after being tested radio equipment processing
Digital intermediate frequency plate is reached after being adjusted by audio board, or digital via being reached after the sampling of directional couple module and the adjusting of rf board
IF board, digital intermediate frequency plate complete the analog-to-digital conversion of signal, signal processing and carry out test index calculating, then will calculate
As a result it is transferred to master control borad, is controlled by master control borad and shows that input module is shown.Wherein, all letters are completed by digital intermediate frequency plate
Number calculating, audio board and rf board no longer carry out signal calculating, realize the miniaturization of audio board and rf board.
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.In the present embodiment, confession
Electric module includes rechargeable battery, Power Management Unit and DC-DC converting units；The input of power management module connection external power supply,
Rechargeable battery and DC-DC conversion modules；External power supply is introduced into inside tester by power management module, can be rechargeable battery
Charging.When equipment self-powered, rechargeable battery output power to DC-DC conversion modules is converted by DC-DC conversion modules,
Electricity consumption module on DC-DC conversion module power output end connecting channel equipment auto testing instruments, to be that radio equipment is automatic
Electricity consumption module for power supply on tester.When power management module connects external power supply, power management module is defeated by external power
Go out to DC-DC conversion modules and converted, realizes externally fed.
From module above composition and flow description as can be seen that one of features of the present invention be it is complete by digital intermediate frequency plate
At the calculating of all signals, audio board and rf board no longer carry out signal calculating, realize the miniaturization of audio board and rf board.
Specifically, digital intermediate frequency plate can be realized by FPGA, fpga logic is divided into transmitter test cell and receiver test list
Member；Its test mode is as follows：
1) when testing radio equipment transmitting signal
Transmitter test cell in FPGA generates digital signal, passes through audio according to the test signal from master control borad
Plate is sent after being converted to audio signal to tested radio equipment；The radiofrequency signal of tested radio equipment transmitter output, by orienting
Coupler is coupled out a part of signal transmission and is returned by rf board progress low-pass filtering and after doing a power adjustment to rf board
Return the transmitting test processes unit of digital intermediate frequency plate；The method that the transmitting test processes unit further uses bandpass sampling, directly
Radiofrequency signal of the acquisition from rf board is connect, digital signal is converted thereof into, digital method is used in combination to carry out transformed signal
The processing that automatic growth control, quadrature frequency conversion, filtering extraction, demodulation calculate is completed to be tested radio equipment transmitter test.
2) when testing radio equipment receiver
Receiver test unit in FPGA is generating two-way just according to the test signal from master control borad using digital method
The digital signal of friendship, then carry out digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion processing after, through rf board
It improves power and exports to tested radio equipment；The audio signal that the receiver of tested radio equipment generates is returned via audio board
The receiver test unit of digital intermediate frequency plate；The receiver test unit is further tested after audio signal digitizing
Radio equipment receiver test is completed in the calculating of index.
The two of the features of the present invention are directional couple module and the design of rf board, which can adapt to
The radio equipment of two kinds of wave bands.Rf board realizes that the reasonable switching of two kinds of couplers uses by the rational design of switching group, and
And device used is fewer so that equipment instrument very little.
Rf board preferred embodiment as shown in Figure 5.Switching group in the rf board includes the one 1 point of 2 switch, second
1 point of 2 switch, the 3rd 1 point of 2 switch and the 4th 1 point of 2 switch；Radio frequency processing channel includes that output treatment channel and input processing are logical
Road.
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the 3rd 1 point of 2 switch
Second end；The coupled end of ultrashort wave directional coupler connects the third end of the one 1 point of 2 switch, and isolation end connects the 3rd 1 point 2
The third end of switch；The first end of one 1 point of 2 switch connects the first end of the 2nd 1 point of 2 switch, second switched for the 2nd 1 point 2
The second end of the 4th 1 point of 2 switch of end connection, the third of the 2nd 1 point of 2 switch terminate the input terminal into input processing channel；4th 1
Divide the output end of the 1st ends connection output treatment channels of 2 switches；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate.
The output treatment channel includes automatic level controller (ALC), 90dB/10dB programmable step attenuators and the filter being sequentially connected in series
Wave device group；ALC connection digital intermediate frequency plates, filter group connect the first end of the 4th 1 point of 2 switch.The input processing channel packet
Include 20dB attenuators and the 5th 1 point of 2 switch；The input terminal of 20dB attenuators connects the third end of the 2nd 1 point of 2 switch, and 20dB declines
The output end for subtracting device connects the second end of the 5th 1 point of 2 switch.The first end of 5th 1 point of 2 switch accesses digital intermediate frequency plate.4th 1
It draws this rf board and forms Insertion Loss isolation degree test dual-port in the third end at the 3rd ends and the 5th 1 point of 2 switch of dividing 2 switches.It is all
Switch the control for receiving digital intermediate frequency plate for 1 point 2.
The course of work of the rf board is：
When testing the transmission power, frequency accuracy and modulation quality of radio equipment, if input signal is shortwave frequency
Segment signal, then digital intermediate frequency plate according to frequency range be arranged 1 point of 2 switching group, the coupled signal of shortwave directional coupler is input to
20dB attenuators carry out signal decaying, and the signal after decaying is input to digital intermediate frequency plate by the 5th 1 point of 2 switch；If input
Signal is ultrashort wave frequency band signal, then 1 point of 2 switching group is arranged according to frequency range in digital intermediate frequency plate, by ultrashort wave directional coupler
Coupled signal is input to 20dB attenuators and carries out signal decaying, and the signal after decaying is input to by the 5th 1 point of 2 switch in number
Frequency plate；The present invention's is exactly to realize shortwave by switching group and surpass one of the characteristics of processing short-wave signal and ultrashort wave signals
Short-wave signal shares an attenuator, and it is power bracket according to input signal, coupler coupling that the present invention, which selects 20dB attenuators,
What the sampled signal power that the power and digital intermediate frequency plate closed out needs was designed, 20dB attenuators meet the demand
Particular value.
When test radio equipment standing-wave ratio when, if input signal be shortwave frequency band signals, digital intermediate frequency plate according to
1 point of 2 switching group is arranged in frequency range, and the isolation end of shortwave directional coupler is directly connected to digital intermediate frequency plate；If input signal
For ultrashort wave frequency band signal, then digital intermediate frequency plate is according to frequency range 1 point of 2 switching group of setting, by the isolation of ultrashort wave directional coupler
End is directly connected to digital intermediate frequency plate.
When test radio equipment receiver sensitivity and receiver dynamic range when, digital intermediate frequency plate output signal into
Enter ALC and carry out algorithm for power modulation, then the fixed value of power adjustment to 10dBm needs program-controlled using 90dB/10dB according to test
Step attenuator attenuates the signal to the range of 10dBm~-80dBm；The filtered device group of signal after decaying carries out signal filter
Corresponding shortwave directional coupler is chosen by 1 point of 2 switching group after wave or ultrashort wave directional coupler carries out coupling output,
Complete receiver sensitivity and receiver dynamic range test.Handling short-wave signal and ultrashort wave signals for the present invention is another
A feature is exactly to realize shortwave and the shared ALC of ultrashort wave signals and programmable attenuator by switching group.
As shown in figure 5, the rf board provides Insertion Loss isolation degree test dual-port, the two interfaces are used for testing multichannel coupling
The insertion loss and isolation of clutch.Multiple-path coupler is a measured device, it is usually that radio equipment is coordinated to use.This
The auto testing instrument of invention also contains the insertion loss and isolation of test multiple-path coupler while testing radio equipment
Function.When test, auto testing instrument exports the signal of a certain power level, after this signal of re-test is by multiple-path coupler
Power, compare output signal power and the power that measures, so that it may to obtain the insertion loss and isolation of multiple-path coupler.
The auto testing instrument of the present invention has the function of following index：
1) audio-frequency index：Including audio signal level intensity, audio signal frequency accuracy, audio signal distortion and audio
Tetra- project testings of signal SINAD, the calculating needed for this four test events include that digital collection, Fourier transformation and letter receive mistake
It is true to calculate.
2) radio-frequency transmissions index：Including three output power, frequency accuracy, modulation quality test events, three tests
Calculating needed for project includes that automatic growth control, digital interpolative filtering, filtering extraction, quadrature frequency conversion and demodulation calculate.
3) radio frequency reception index：Including receiving sensitivity and receive two test events of dynamic range, two test events
Required calculating includes digitaltoanalogconversion, digital quadrature up conversion and digital modulation.
As it can be seen that three classes index calculating demand having the same.The present invention completes the modularization of test event in master control borad,
Master control borad completes the calling of test event；Modularization is carried out to calculating in digital intermediate frequency plate, passes through tune in digital intermediate frequency plate
The specific calculating of test event is completed with computing module.That is, actually calculating operation is mainly by digital intermediate frequency plate Lai complete
At, to make full use of the computing capability of digital intermediate frequency plate.According to the test event of above-mentioned required completion, the digital intermediate frequency
The transmitter test cell of FPGA and receiver test unit need to share several computing modules when executing test event in plate,
Including automatic growth control module, digital interpolative filter module, filtering extraction module, demodulation computing module, quadrature frequency conversion mould
Block and digital orthometric up-conversion module (bottom line in Fig. 6).
The three of core of the invention are the tests that equipment can realize automation, and automatic test of the invention is to pass through operation
It is executed in the automatic testing software on master control borad, automatic testing software provides people using visual programming technique ripe at present
Machine operation interface.When being tested radio equipment using the present invention, two methods of manual test and automatic test may be used.
Manual test is that the parameter of radio equipment and radio equipment tester is arranged step by step manually according to testing procedure
It is tested.Automatically the implementation method tested is then in advance according to test method step, using computer programming language, program-controlled letter
Road equipment and radio equipment tester, are automatically performed testing process.Automatically the script tested is carried by test-schedule editor's subsystem
For manual test can then be completed by tester by the editing interface that tester provides.
The editing interface of manual test is run by the upper computer software on master control borad.In order to simplify the work of tester,
The upper computer software of the present invention has carried out modularization to test event as previously described, using each test event as an independence
Module, and formed visualization icon (middle two rows in Fig. 6), can adding for test event be carried out by tester as needed
Add, change and deletes.And according to the execution needs of test event, increase condition judgment sentence, Do statement, delay, variable,
The control statements such as array, message window, each control statement correspond to a visualization icon.Using these control statements of personnel
Test event is connected, the icon of control statement can be increased in the edit box of setting by way of dragging, be held
When row test, these sentences will be run one by one, may be constructed a complete flow, to realize the Row control of test event.
By this design, tester can flexibly edit the test method flow of oneself needs.
For master control borad, when manual test, master control borad receives selection of the tester to test event, and utilizes
Tagged word and control event that tester chooses and it is ordered execute sequence, to test event carry out sequence execution, with
Realize the control of test event；When automatic test, master control borad is according to the predetermined test event sequence of test script, automatically
It executes.
Either manually or automatic, once having selected the sequence that executes of test event, master control borad is executing each test
When project, test signal is sent to digital intermediate frequency plate, digital intermediate frequency plate is according to test signal by calling shared computing module
Realize each specific execution for calculating step in test event.Therefore, main calculating is still completed by digital intermediate frequency plate.
Fig. 6 illustrates the function module composition of software.It includes audio signal level intensity, audio that software, which is divided into audio-frequency index,
Signal frequency accuracy, audio signal distortion and tetra- project testings of audio signal SINAD, radio-frequency transmissions include output power,
Three frequency accuracy, modulation quality test events, radio frequency reception include two tests of receiving sensitivity and reception dynamic range
Project, basic sentence include For Do statements, If condition judgments sentence and variable.It, can be according to actual test before being tested
Some test event is added in test-schedule by demand, basic sentence can also be added some test item currently as
Cycle, the condition of condition judgment, software is automatically performed test after user clicks operation.
In the exploitation or maintenance of electronic communication equipment, when being related to signal magnitude and frequency, be required for there are one
Reference standard, to weigh the absolute size of output signal or the size of measuring signal.When signal frequency coverage area is wider,
Due to the frequency selectivity of various electronic components in electronic communication equipment, equipment can be caused in different frequency, with signal work(
The relevant performance of rate is inconsistent, as output signal power or measured signal power are inaccurate.Equally, in a certain frequency, adjustment is defeated
The attenuator gear for going out signal magnitude can not possibly be as preferably so accurate.It is therefore desirable to electronic communication equipment in different frequencies
Power when rate is calibrated.The essence of calibration is to demarcate the equipment for correcting a certain precision with the equipment of higher precision.Using
Electronic communication equipment can be calibrated to standard similar with these instrument by power meter, signal source and the frequency spectrograph of high measurement accuracy
Exactness.Calibration subsystem in the present invention realizes that radio equipment is automatic using spectrum analyzer, simulation signal generator and power meter
The calibration of the frequency accuracy, power accuracy of the transmitter and receiver of tester.
Since transmitter and receiver shares a reference source, by adjusting the frequency of internal reference source, transmitter and connect
The frequency accuracy of receipts machine will change simultaneously, therefore transmitter and receiver only carries out one of frequency accuracy calibration i.e.
It can.The present embodiment selects the frequency accuracy of calibration transmitter.So, calibration thinking of the invention is transmitter frequency and work(
Rate is traced to the source to spectrum analyzer, and receiver power is traced to the source to simulation signal generator, ultimately generates self calibration file, is directed into channel and is set
Standby auto testing instrument.Specific practice is as follows.
1, the frequency accuracy calibration of radio equipment auto testing instrument
Frequency accuracy calibration for radio equipment auto testing instrument, is that its internal reference clock is adjusted to and is calibrated
Instrument is consistent.It is exigent in clock accuracy, it can be calibrated using rubidium clock, it in general, can be with
It is calibrated with the accurate frequency spectrograph of frequency.
As shown in Fig. 7 (a), radio equipment auto testing instrument control itself transmitter and spectrum analyzer be in work shape
The transmitting signal of radio equipment auto testing instrument is output to spectrum analyzer by state；Emission signal frequency is adjusted, spectrum analysis is made
The signal frequency that instrument measures is consistent with nominal frequency value, to complete with Spectrum Analyzer Calibration radio equipment auto testing instrument frequency
The process of rate.
2, the calibration of power of radio equipment auto testing instrument
The power accuracy of power meter calibration electronic communication equipment may be used, but power meter can not accurately test small signal
Power, so, the present invention first demarcates the power of spectrum analyzer and signal source with power meter, reuses signal source and spectrum analysis
Instrument calibrates the power of electronic communication equipment.Specifically：
The first step demarcates the power of simulation signal generator
As shown in Fig. 7 (b), radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator transmitting setting
The frequency of the signal of performance number, simulation signal generator output signal is set as a certain Frequency point f1；Analog signal is measured by power meter
The transmission power data in source compare the data measured and the simulation signal generator performance number of setting, and difference is exactly current frequency
Difference between point Imitating signal source power measurement and power meter measurement；Assuming that simulation signal generator setpoint power output value is
A1, the value that power meter measures are b1f1, the value measured using power meter is actual value, then in present frequency point f1Imitating signal source
Setpoint power output is than its true output power d1f1=a1-b1f1, i.e. Frequency point fnImitating signal source output power error,
N=1,2 ..., N, N are positive integer.
Second step calibrates the receiver power of radio equipment auto testing instrument
As shown in Fig. 7 (c), present frequency point is constant, in order to make the true output power of simulation signal generator for c1, in consideration
d1f1, the output power of the program-controlled simulation signal generator of radio equipment auto testing instrument is set as c1+d1f1, signal power at this moment is
Through approximate with the accuracy of power meter.The power in radio equipment auto testing instrument measure analog signals source is p1f1, the number that measures
Value is than being really worth big d2f1=p1f1- c1, i.e. auto testing instrument receiver power error；By d2f1It stores in self calibration file
In the corresponding regions Frequency point f1.
Changing present frequency point enables it traverse f1~fN, the first step and second step are repeated, it is corresponding to obtain each Frequency point
Receiver power error d2f1~d2fN, it is as shown in table 1 to form self calibration file.
| Frequency | f1 | f2 | f3 | … | fn | … | fN-1 | fN |
| Error | d2f1 | d2f2 | d2f3 | … | d2fn | … | d2fN-1 | d2fN |
Table 1
When actually using the table 1, it is corresponding that the actually measured value of radio equipment auto testing instrument is subtracted into corresponding frequencies
D2 is exactly true performance number.
Third walks, and demarcates the power of spectrum analyzer
As shown in Fig. 7 (d), the output frequency of the program-controlled simulation signal generator of radio equipment auto testing instrument is f1, output power
For c1+d1f1, spectrum analyzer is used to measure the power of simulation signal generator output signal as e1f1, then spectrum analyzer measure
The big d3 of numeric ratio actual valuef1=e1f1-c1.The output signal frequency for changing simulation signal generator enables it traverse f1~fN, obtain every
The corresponding spectrum analyzer power error d3 of a Frequency pointf1~d3fN。
4th step calibrates the transmitter power of radio equipment auto testing instrument
As shown in Fig. 7 (e), radio equipment auto testing instrument programme-controlled automatic test instrument output power of transmitter is p31Letter
Number arrive spectrum analyzer, emission signal frequency be Frequency point f1, by spectrum analyzer measure signal power be g(p31-f1), then this
The real power of signal is p2(f1-1)=g(p31-f1)-d3f1；By setting value p31Actual value p2 corresponding with its(f1-1)It preserves.
Change auto testing instrument output power of transmitter (p31~p3M-1) and output frequency (f1~fN) in various signals frequency
Under rate and power condition, calibration obtains a two-dimensional data table, such as the following table 2.
Table 2
According to this table 2, the frequency power level of tested electronic communication equipment can be compensated, improves accuracy.Compensation process
It is as follows：
Auto testing instrument emitting portion：If it is freq to control auto testing instrument to launch frequency, power is level's
Signal finds by transmitter calibration table and is just less than equal to freq and just greater than two Frequency points equal to freq, it is assumed that
It is f2 and f3；Under the two frequencies, table look-up respectively 2 find just less than or be equal to level and be just greater than or be equal to level
Two test values, by linear interpolation, i.e. proportionally relationship can obtain that output signal frequency is made to be freq, power is
Corresponding setting output power value, is arranged auto testing instrument according to this value when level, it can be made to emit signal satisfaction and wanted
It asks.
Auto testing instrument receiving portion：The correction card of receiving portion is simpler than emitting, and content is that auto testing instrument exists
Measurement error is measured when equal-wattage different frequency.When test compensation, according to frequency, error is found in table 1, from test value
Middle this error of deduction, to compensate for test result.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of radio equipment automatic testing equipment, which is characterized in that connect including interface adapter and using general test instrument
The radio equipment auto testing instrument of mouth；The radio equipment auto testing instrument includes：Master control borad, audio board, is penetrated digital intermediate frequency plate
Frequency plate, directional couple module, display input module and self-powered module；Embedded master control borad connects sound by digital intermediate frequency plate
Frequency plate and rf board, rf board connect directional couple module, and master control borad is also connected with display input module；The audio that audio board provides
Mouth connects the audio port for being tested radio equipment by interface adapter；The control mouth that master control borad provides is connected by interface adapter
The control mouth of tested radio equipment；Directional couple module two antenna/loading interfaces of offer and two radio frequency mouths, two antennas/
Loading interfaces are respectively used to connect the tested radio equipment of corresponding wave band for connecting load or corresponding wave band antenna, two radio frequency mouths
Radio frequency mouth；The corresponding wave band includes shortwave and ultrashort wave；
The directional couple module includes ultrashort wave coupler and shortwave coupler, and the rf board includes at switching group and radio frequency
Manage channel；Radio frequency processing channel connects digital intermediate frequency plate, and connects ultrashort wave coupler and shortwave coupler by switching group；Institute
State connected relation of the switching group for switching digital intermediate frequency plate, radio frequency processing channel and ultrashort wave coupler and shortwave coupler；
Shortwave coupler connects the corresponding antenna/loading interfaces of shortwave and radio frequency mouth, and ultrashort wave coupler connects the corresponding day of ultrashort wave
Line/loading interfaces and radio frequency mouth；The ultrashort wave coupler and shortwave coupler are for the signal from rf board to be coupled out
Go, the radiofrequency signal from tested radio equipment be divided into two parts, a part introduces rf board, another part introduce antenna/
Loading interfaces；
Master control borad is arranged by control mouth is tested radio equipment state；It is inputted according to from external test script or according to display
The test script that the input of module is generated generates test signal and is transferred to digital intermediate frequency plate, and digital intermediate frequency plate is believed according to test
It number generates and digital signal and to be converted to analog signal, be sent to audio board or rf board carries out signal condition, improved through audio board
Signal afterwards is exported by audio port to tested radio equipment, and the signal improved through rf board is set by radio frequency mouth to tested channel
Standby output；The output signal generated after being tested radio equipment processing reaches digital intermediate frequency plate, or warp after being adjusted via audio board
By reaching digital intermediate frequency plate after the sampling of directional couple module and the adjusting of rf board, digital intermediate frequency plate completes the simulation number of signal
Word transformation, signal processing simultaneously carry out test index calculating, and result of calculation is then transferred to master control borad, is controlled and is shown by master control borad
Input module is shown；
Self-powered module is audio board, master control borad, digital intermediate frequency plate and rf board provide power supply.
2. radio equipment automatic testing equipment as described in claim 1, which is characterized in that the digital intermediate frequency plate uses FPGA
It realizes, fpga logic is divided into transmitter test cell and receiver test unit；
Transmitter test cell generates digital signal, audio is converted to by audio board according to the test signal from master control borad
It is sent to tested radio equipment after signal；The radiofrequency signal of tested radio equipment transmitter output, is coupled out by directional coupler
A part of signal transmission returns to digital intermediate frequency plate to rf board by rf board progress low-pass filtering and after doing a power adjustment
Transmitting test processes unit；The method that the transmitting test processes unit further uses bandpass sampling, directly acquisition come from and penetrate
The radiofrequency signal of frequency plate, converts thereof into digital signal, be used in combination digital method to transformed signal carry out automatic growth control,
The processing that quadrature frequency conversion, filtering extraction, demodulation calculate is completed to be tested radio equipment transmitter test；
Receiver test unit generates the orthogonal number of two-way according to the test signal from master control borad, using digital method to be believed
Number, then carry out digital interpolative filtering, digital quadrature up-conversion, digitaltoanalogconversion processing after, through rf board conditioning power simultaneously
It exports to tested radio equipment；The audio signal that the receiver of tested radio equipment generates returns to digital intermediate frequency plate via audio board
Receiver test unit；The receiver test unit further carries out the calculating of test index by after audio signal digitizing,
Complete radio equipment receiver test.
3. radio equipment automatic testing equipment as claimed in claim 2, which is characterized in that the transmitter test of the FPGA is single
Member and receiver test unit share computing module when executing testing process, and the computing module includes automatic growth control mould
Block, digital interpolative filter module, filtering extraction module, demodulation computing module, quadrature frequency conversion module and digital quadrature up-conversion
Module.
4. radio equipment automatic testing equipment as claimed in claim 3, which is characterized in that the switching group packet in the rf board
Include the one 1 point of 2 switch, the 2nd 1 point of 2 switch, the 3rd 1 point of 2 switch and the 4th 1 point of 2 switch；Radio frequency processing channel includes at output
Manage channel and input processing channel；
The coupled end of shortwave directional coupler connects the second end of the one 1 point of 2 switch, and isolation end connects the of the 3rd 1 point of 2 switch
Two ends；The coupled end of ultrashort wave directional coupler connects the third end of the one 1 point of 2 switch, and isolation end connects the 3rd 1 point of 2 switch
Third end；The first end of one 1 point of 2 switch connects the first end of the 2nd 1 point of 2 switch, and the second end of the 2nd 1 point of 2 switch connects
The second end of the 4th 1 point of 2 switch is connect, the third of the 2nd 1 point of 2 switch is terminated into input processing channel；The 1st of 4th 1 point of 2 switch
It terminates into output treatment channel；1st end of the 3rd 1 point of 2 switch is directly accessed digital intermediate frequency plate；The output treatment channel includes
Automatic level controller ALC, 90dB/10dB programmable step attenuator and filter group being sequentially connected in series；ALC connection digital intermediate frequencies
Plate, filter group connect the first end of the 4th 1 point of 2 switch；The input processing channel includes 20dB attenuators and the 5th 1 point 2
Switch；The input terminal of 20dB attenuators connects the third end of the 2nd 1 point of 2 switch, and the output end of 20dB attenuators connects the 5th 1 point
The second end of 2 switches；The first end of 5th 1 point of 2 switch accesses digital intermediate frequency plate；4th 1 point 2 switch the 3rd end and the 5th 1 point
It draws this rf board and forms Insertion Loss isolation degree test dual-port in the third end of 2 switches；All 1 point of 2 switches receive digital intermediate frequency plate
Control；
When testing the transmission power, frequency accuracy and modulation quality of radio equipment, if input signal is believed for shortwave frequency range
Number, then 1 point of 2 switching group is arranged according to frequency range in digital intermediate frequency plate, and the coupled signal of shortwave directional coupler is input to 20dB and is declined
Subtract device and carry out signal decaying, the signal after decaying is input to digital intermediate frequency plate by the 5th 1 point of 2 switch；If input signal is
Ultrashort wave frequency band signal, then digital intermediate frequency plate is according to frequency range 1 point of 2 switching group of setting, by the coupling letter of ultrashort wave directional coupler
It number is input to 20dB attenuators and carries out signal decaying, the signal after decaying is input to digital intermediate frequency plate by the 5th 1 point of 2 switch；
When testing the standing-wave ratio of radio equipment, if input signal is shortwave frequency band signals, digital intermediate frequency plate is according to frequency range
1 point of 2 switching group is set, the isolation end of shortwave directional coupler is directly connected to digital intermediate frequency plate；If input signal is super
Shortwave frequency band signals, then digital intermediate frequency plate according to frequency range be arranged 1 point of 2 switching group, by the isolation end of ultrashort wave directional coupler with
Digital intermediate frequency plate is directly connected to；
When testing the receiver sensitivity and receiver dynamic range of radio equipment, the signal of digital intermediate frequency plate output enters
ALC carries out algorithm for power modulation, then the fixed value of power adjustment to 10dBm needs to utilize the program-controlled steps of 90dB/10dB according to test
The range of 10dBm~-80dBm is attenuated the signal into attenuator；The filtered device group of signal after decaying carries out signal filtering
Corresponding shortwave directional coupler is chosen by 1 point of 2 switching group afterwards or ultrashort wave directional coupler carries out coupling output, it is complete
It is tested at receiver sensitivity and receiver dynamic range.
5. radio equipment automatic testing equipment as described in claim 1, which is characterized in that the self-powered module includes charging
Battery, power management module and DC-DC converting units；Power management module connects external power supply input, rechargeable battery and DC-DC
Conversion module；Electricity consumption module on DC-DC conversion module power output end connecting channel equipment auto testing instruments.
6. radio equipment automatic testing equipment as claimed in claim 3, which is characterized in that the master control borad has prestored multiple only
Vertical test module, each test module correspond to a test event, and each test module corresponds to a visual icon；It is main
Control plate has also prestored multiple control statements, and each control statement corresponds to a visual icon；When manual test, master control borad
Selection of the tester to test event is received, and suitable using the control statement and ordered execution of tester's selection
Sequence, to test event carry out sequence execution, to realize the control of test event；When automatic test, master control borad is according to test foot
This predetermined test event sequence, it is automatic to execute；When executing each test event, test letter is sent to digital intermediate frequency plate
Number, digital intermediate frequency plate is according to test signal by calling shared computing module to realize the execution of test event.
7. a kind of radio equipment Auto-Test System, which is characterized in that including：Calibrate subsystem, test-schedule editor subsystem,
System of Quality Control further includes the radio equipment automatic testing equipment as described in claim 1~6 any one；Calibration
Radio equipment in system, System of Quality Control and planning editor's subsystem connecting channel equipment automatic testing equipment is surveyed automatically
Try instrument；
The radio equipment auto testing instrument carries out self calibration according to the self calibration file for carrying out self calibration subsystem；Receive test rule
It draws the basis that editor's subsystem is sent and is tested the test script that radio equipment type is planned, by testing results script to current
The tested radio equipment of type is tested；After completing test, the test result file of tested radio equipment is preserved to quality
Subsystem is managed, the statistical analysis of test result is completed by System of Quality Control.
8. radio equipment Auto-Test System as claimed in claim 7, which is characterized in that calibrated using the calibration subsystem
When, the transmitter and reception of the program-controlled spectrum analyzer of radio equipment auto testing instrument, simulation signal generator and power meter to its own
Machine is calibrated：
When calibration frequency accuracy, the transmitter and spectrum analyzer of radio equipment auto testing instrument are in running order, will believe
The transmitting signal of road equipment auto testing instrument is output to spectrum analyzer；Emission signal frequency is adjusted, spectrum analyzer is made to measure
Signal frequency it is consistent with nominal frequency value, to complete the mistake with Spectrum Analyzer Calibration radio equipment auto testing instrument frequency
Journey；
When calibrating power accuracy, the power of power meter calibration spectrum analyzer and simulation signal generator is used first, reuses mould
The power of quasi- signal source and Spectrum Analyzer Calibration radio equipment auto testing instrument, specifically comprises the following steps：
(1) power of simulation signal generator is demarcated
Radio equipment auto testing instrument controls simulation signal generator so that simulation signal generator transmitting sets performance number as a1 but Frequency point
Different signals, the Frequency point for emitting signal are denoted as fn, n=1,2 ..., N, N is positive integer；For Frequency point fn, by power meter
Measure the transmission power data b1 of simulation signal generatorfn, the value measured using power meter is actual value, then in Frequency point fnUnder, simulation
Signal source output power error is d1fn=a1-b1fn；
(2) receiver power of radio equipment auto testing instrument is calibrated
The output frequency of the program-controlled simulation signal generator of radio equipment auto testing instrument is fn, output power be set as c1+d1fn, c1 is
It is expected that simulation signal generator real output, uses the power in radio equipment auto testing instrument measure analog signals source for p1fn；Then
Frequency point fnUnder, auto testing instrument receiver power error d2fn=p1fn-c1；N is enabled to take all over 1~N, connecing in self calibration file
It receives d2 in errors tablefnWith Frequency point fnCorresponding storage；
(3) power of spectrum analyzer is demarcated
The output frequency of the program-controlled simulation signal generator of radio equipment auto testing instrument is fn, output power be set as c1+d1fn, use
The power of spectrum analyzer measure analog signals source output signal is e1fn；Then Frequency point fnUnder, the power measurement of spectrum analyzer
Error is d3fn=e1fn-c1；It enables n take all over 1~N, obtains the corresponding spectrum analyzer power measurement error of each Frequency point；
(4) transmitter power of radio equipment auto testing instrument is calibrated
The transmitter output frequency of radio equipment auto testing instrument is fn, power p3mSignal to spectrum analyzer, by frequency spectrum
The power that analyzer measures signal is denoted as g(p3m-fn), then the real power of current demand signal is p2(fn-m)=g(p3m-fn)-d3fn；It will set
Set frequency values fn, setting performance number p3mWith corresponding actual value p2(fn-m)Correspondence preserves；
It enables n take all over 1~N, m is enabled to take all over 1~M, M is positive integer, then calibration obtains one under various signal frequencies and power condition
A transmitter power calibrates two-dimensional data table.
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| CN115189781B (en) * | 2022-06-02 | 2024-04-09 | 中国信息通信研究院 | System and method for calibrating bandwidth occupied by instrument and meter |
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