CN115407287A - Rapid safety test system and method for transceiving component based on multi-state flow reconstruction - Google Patents
Rapid safety test system and method for transceiving component based on multi-state flow reconstruction Download PDFInfo
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- CN115407287A CN115407287A CN202210839161.4A CN202210839161A CN115407287A CN 115407287 A CN115407287 A CN 115407287A CN 202210839161 A CN202210839161 A CN 202210839161A CN 115407287 A CN115407287 A CN 115407287A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4008—Means for monitoring or calibrating of parts of a radar system of transmitters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
- G01S7/4021—Means for monitoring or calibrating of parts of a radar system of receivers
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Abstract
The invention provides a rapid and safe receiving and transmitting component testing system and method based on multi-state flow reconstruction, and relates to the technical field of phased array radars. The invention comprises a main controller for generating a first control signal of a test system according to an index to be tested and controlling the test system; the data acquisition and control unit is used for acquiring and analyzing signals according to the first control signal and generating a second control signal; the switch matrix is used for switching the link according to the first control signal and the second control signal, and the test instrument group is used for gating different test instruments according to the link switching and testing and displaying the index to be tested. The invention can realize one-time issuing of all states and flows of test indexes and instrument scanning settings according to different working states of the transceiving component, and then the whole reading technology can reduce the time of state switching and data reading in the test process to the maximum extent, thereby improving the test efficiency.
Description
Technical Field
The invention relates to the technical field of phased array radars, in particular to a rapid safety test system and a rapid safety test method for a transmitting and receiving assembly based on multi-state flow reconstruction.
Background
With the rapid development of phased array radar equipment, higher and higher requirements are provided for testing technologies of phased array radars and core units thereof. The core component of a phased array radar is a transceiver unit. The phased array radar realizes electronic scanning through phase control of the transmitting and receiving unit and realizes better beam pointing through amplitude control of side lobes. Each phased array radar is provided with tens of thousands of transceiving units, each transceiving unit forms a transceiving module, and the transceiving modules form an antenna sub-array. The transceiving unit, the transceiving module and the transceiving channel in the antenna subarray are all collectively called a transceiving component.
Because the transceiving component is multiplexed by the transceiving channel, the current test on the transceiving component mainly focuses on the problem of damage to instruments and equipment such as a signal source, a noise source, a vector network analyzer and the like caused by wrong switching of a test link under the condition of ensuring the high-power test state of a transmitting channel. However, in the safety detection process of the existing transceiver module, the hardware connection or the signal flow direction needs to be changed continuously, so that the test speed is slow.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a rapid and safe receiving and transmitting assembly testing system and method based on multi-state flow reconstruction, and solves the technical problem of low testing speed of the conventional receiving and transmitting assembly.
(II) technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a rapid safety test system for a transceiver module based on multi-state flow reconfiguration, including:
the main controller is used for generating a first control signal of the test system and controlling the test system according to the index to be tested;
the data acquisition and control unit is used for acquiring and analyzing signals according to the first control signal and generating a second control signal;
the switch matrix is used for switching the link according to the first control signal and the second control signal;
the test instrument group is used for switching and gating different test instruments according to the link, and testing and displaying the index to be tested;
wherein the content of the first and second substances,
the data acquisition and control unit transmits the working state of the transceiving component, the synchronous trigger signal and the working state switching delay pulse required by each working state of the test instrument test transceiving component at one time according to the selected test index and the test sequence, so that the one-time control of the multi-state arbitrarily combined component working state and the test instrument scanning data is realized, and the data of the test instrument is acquired at one time; and when the tested indexes are different or the test sequences of the indexes are different, reconstructing the working state and the test flow of the transceiving component.
Preferably, the data acquisition and control unit comprises a high-precision data acquisition module, a digital signal acquisition and control module and a power supply module;
when a receiving channel of a transmitting and receiving component is tested, a switch in a switch matrix is controlled, a high-precision data acquisition module monitors a receiving small signal output by a port 2 of a power divider 1, and when an excitation signal output by the port 2 of the power divider 1 monitored by the high-precision data acquisition module cannot meet the test excitation requirement of the receiving channel of the transmitting and receiving component, a negative feedback circuit is formed by a main controller in a mode of regulating a vector network analyzer source by software until the signal level of the port 2 of the power divider 1 meets the requirement of the transmitting and receiving component for receiving the small signal;
when the transmitting channel of the transmitting and receiving assembly is tested, the switch in the switch matrix is controlled, a high-precision data acquisition module in the acquisition and control unit monitors the excitation level of the output end of the power amplifier through the coupling end 2 of the bi-directional coupler, when the output signal power cannot meet the transmitting and exciting requirements of the transmitting and receiving assembly, a negative feedback loop is formed through the adjustment of main control software in the main controller, the output power of the vector network signal source1 is adjusted, and the output power meets the saturated working requirements of the transmitting channel of the transmitting and receiving assembly.
Preferably, before the data acquisition and control unit issues the working state of the transceiver module, the synchronous trigger signal required by the test instrument for measuring each working state of the transceiver module, and the switching delay pulse of the working state of the transceiver module, the method further includes:
and splicing the working states of the transceiving components, synchronous trigger signals required by testing each working state testing instrument and working state switching delay pulses into a complete testing time sequence stream by utilizing a splicing technology according to the reconstructed index execution sequence.
Preferably, the splicing technique comprises:
the number of test points of the transceiver module is set to be N,
when initial phase and gain tests are carried out, splicing the receiving and transmitting assemblies in a receiving ground state test state, and splicing N external trigger scanning signals of the vector network;
when compression parameter testing is carried out, splicing of receiving ground state testing states of the receiving and transmitting assemblies is carried out, and according to the testing frequency points and the power scanning intervals of the compression parameters, splicing of trigger signals of M testing frequency points and P power scanning points is carried out;
when attenuation and phase shift multi-state testing is carried out, splicing is carried out from the 1 st state according to the selection condition of the testing states until all the testing states are spliced, each testing state is spliced in the mode of splicing the testing state firstly and then splicing N trigger signals, splicing is carried out from the loading state 0 every time, and the state 0 is used as the reference of the multi-state testing;
and when the noise coefficient is tested, splicing the receiving ground state and splicing the trigger signals.
Preferably, the switch matrix comprises an SCPI command control switch, a digital signal controlled analog switch and a digital circuit switch.
Preferably, the test meter cluster comprises a vector network analyzer;
the vector network analyzer adopts an open link design;
the first condition is as follows:
disconnecting an external jumper between an RCVR R1 IN port and a Source Out port of a reference receiver of the vector network analyzer, and connecting a coupling end 1 of the double-directional coupler with the RCVR R1 IN port
Case two:
and disconnecting an external jumper between a direct arm output CPLR THRU port and a Source Out port of an internal Source1 of the vector network analyzer.
Preferably, the vector network analyzer is calibrated by using a power meter to an output source and a measurement receiver of the vector network analyzer, and the calibration process comprises:
the attenuation of Source1 in the Power and att setting of vector network port1 of the vector network analyzer is set in a 0dB fixed state, and Power calibration is carried out on vector network port1 by using a Power meter;
during calibration, the calibration level is set at 0dBm; after the port1 of the vector network analyzer is calibrated by the power meter, the port1 and the port 2 of the vector network analyzer are directly calibrated, the power calibration result of the port1 of the vector network analyzer is transmitted to a measurement receiver of the port 2 of the vector network analyzer, and the measurement receiver of the vector network analyzer is calibrated;
and stabilizing the source of the port1 of the vector network analyzer in the receiver amplitude stabilization state, and setting the measurement mode of the vector network analyzer to be the receiver amplitude stabilization state.
In a second aspect, the present invention provides a method for testing the fast safety of a transceiving component based on multi-state flow reconfiguration, which tests the transceiving component by using the system for testing the fast safety of the transceiving component based on multi-state flow reconfiguration as described above, and includes:
according to different test indexes and test sequences, different test links are switched by using a switch matrix, according to different test states, test frequencies, scanning power and test point numbers, the working state of the component is controlled by using a data acquisition and control unit, a synchronous test starting trigger signal and a point scanning control signal of the test instrument are issued, a receiver synchronous measurement signal of the test instrument is controlled, and at least one index of initial phase and gain, nonlinear phase, multi-state phase shift precision, multi-state attenuation precision, input and output 1dB compression point, noise coefficient, emission initial phase and gain, emission power and emission efficiency of the transceiving component is tested and displayed.
(III) advantageous effects
The invention provides a rapid and safe receiving and transmitting component testing system and method based on multi-state flow reconstruction. Compared with the prior art, the method has the following beneficial effects:
the data acquisition and control unit of the invention sends the working state of the transceiving component, the synchronous trigger signal and the working state switching delay pulse required by the test instrument test transceiving component in each working state at one time according to the selected test index and the test sequence, realizes the one-time control of the multi-state arbitrarily combined component working state and the test instrument scanning data, and acquires the data of the test instrument at one time; and when the tested indexes are different or the test sequences of the indexes are different, reconstructing the working state and the test flow of the transceiving component. The invention can realize one-time issuing of all states and flows of test indexes and instrument scanning settings according to different working states of the transceiving component, and then the whole reading technology can reduce the time of state switching and data reading in the test process to the maximum extent, thereby improving the test efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the examples or the description in the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a rapid security testing system for transceiver components based on multi-state flow reconfiguration according to an embodiment of the present invention;
FIG. 2 is a block diagram of a fast security testing system for transceiver components based on multi-state flow reconfiguration according to an embodiment of the present invention;
FIG. 3 is a flow diagram of a multi-state flow reconstruction;
FIG. 4 is a flowchart of a testing method of the rapid security testing system for transceiver modules.
Detailed Description
To make the objectives, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the scope of the present invention, not the whole scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the application provides a receiving and dispatching subassembly fast safety test system based on multistate flow reconfiguration, has solved the technical problem that current receiving and dispatching subassembly test speed is slow, utilizes multistate flow reconfiguration technique, can once only issue receiving and dispatching subassembly's test condition and instrument's scan control on the basis that does not change hardware connection and signal flow direction, realizes disposable collection test data, promotes efficiency of software testing by a wide margin.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
the embodiment of the invention adopts a rapid and safe receiving and transmitting assembly testing technology based on multi-state flow reconstruction, can realize one-time issuing of all states and flows of testing indexes and instrument scanning setting according to different working states of the receiving and transmitting assembly, and then adopts an integral reading technology, can reduce the time of state switching and data reading in the testing process to the maximum extent, and improves the testing efficiency. Meanwhile, on the basis of not increasing hardware cost, by means of software processing algorithm and existing hardware output and control, the functions of power supply voltage, power-on sequence, temperature detection, current detection, excitation signal detection, pulse width detection and the like of the radar transceiving component are achieved in a mode of combining software and hardware, correctness of a test signal and a test flow and safety of test equipment and a tested piece are guaranteed in the whole test process, and safe and rapid test is conducted on the transceiving component. A good theoretical basis is accumulated for the index test of the phased array radar receiving and transmitting assembly.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
The embodiment of the invention provides a rapid and safe receiving and transmitting component testing system based on multi-state flow reconstruction, as shown in fig. 1, comprising:
the main controller is used for generating a first control signal of the test system and controlling the test system according to the index to be tested;
the data acquisition and control unit is used for acquiring a digital signal according to the first control signal and generating a second control signal;
the switch matrix is used for switching the link according to the first control signal and the second control signal;
the test instrument group is used for switching and gating different test instruments according to the link, and testing and displaying the index to be tested;
wherein the content of the first and second substances,
the data acquisition and control unit transmits the working state of the transceiving component, the synchronous trigger signal and the working state switching delay pulse required by each working state of the test instrument test transceiving component at one time according to the selected test index and the test sequence, so that the one-time control of the multi-state arbitrarily combined component working state and the test instrument scanning data is realized, and the data of the test instrument is acquired at one time; and when the tested indexes are different or the test sequences of the indexes are different, reconstructing the working state and the test flow of the transceiving component.
It should be noted that the first control signal in the present embodiment refers to the signal generated by the main controller, and the second control signal refers to the signal generated by the data acquisition and control unit.
The embodiment of the invention can realize one-time issuing of all states and flows of test indexes and instrument scanning settings according to different working states of the transceiving component, and then adopts an integral reading technology, thereby maximally reducing the time for state switching and data reading in the test process and improving the test efficiency.
The test system is described in detail below:
as shown in fig. 2, the system includes: generating a first control signal of the test system and a main controller for controlling the test system according to the index to be tested; the receiving and transmitting component tests a switch matrix switched by a link; the data acquisition and control unit realizes analog signal detection, component power supply and digital signal acquisition; a test instrument cluster; an isolator to prevent signal inversion; an attenuator for realizing the attenuation of the signal of the transmitting channel; a matched load switch for realizing signal matching; a stimulus generating device, etc.
The switch matrix comprises three switches, namely an SCPI instruction control switch, an analog switch controlled by a digital signal and a digital circuit switch.
The data acquisition and control unit comprises a 211 module, a 212 module and a 213 module, wherein the 211 module is a digital signal acquisition and control module; the 212 module is a power supply module which can supply power for three paths of 30V (6A), 30V (6A) and 5V (3A); the 213 module is a PXIe series high-precision data acquisition module.
In the embodiment of the invention, each output end of the switch matrixes SW1 and SW6 is connected with a dual-channel switch with matched load, so that the leakage of redundant excitation signals and the signal crosstalk of other working channels are avoided in a link during each test. The receiving excitation loading circuit of the switch matrix realizes the dual-purpose guarantee of the correctness of the link opening by software and hardware by using the switch matrix SW29 controlled by a digital signal and the SW8 controlled by an SCPI instruction. The transmitting excitation signal loading realizes the double guarantee of the correctness of the link opening by using a digital AND gate switch SW29 and an SW28 controlled by an SCPI instruction. The SW29 AND gate digital control switch is used for detecting the opening of the digital feedback signal phase and the control link by the emission excitation signal and the component TTL pulse width.
The embodiment of the invention designs a receiving power-on, receiving power-off, transmitting power-on and transmitting power-off process of software + hardware + detection. The 213 module compares the detected static voltage value with a set threshold value, the comparison result controls digital signal acquisition through an FPGA program and the input digital signal output of the control module (211 module), the digital output signal controls the SW23 to be opened, and simultaneously, when the main control program controls the power supply module to successfully set the static power supply parameter, the switch SW22 is controlled to be opened through an SCPI instruction through a GPIB bus. Similarly, the voltage detection result of the 213 block and the digital signal output of the 211 block control the turn-on of the receive switch SW24 and the transmit switch SW26 at the same time. After the main control program successfully sets the received voltage parameter, the SW25 is controlled to be opened; after the transmission power supply parameter setting is successful, the switch SW27 is controlled to be turned on. When the main control software controls the receiving power-on, the receiving power supply can be powered on only after the static power supply is powered on successfully. When the static power supply is powered on during transmitting, the power supply can be powered on only after the static power supply is powered on successfully, and the power supply can be powered on during transmitting only after the power supply is powered on successfully. If the link is not successful in power-up, the power-up is directly stopped, the working state of the component is switched to a load state, all power supplies are turned off, and excitation output is turned off. The order of receive power-down is the reverse of receive power-up, with receive power down first and then the quiescent power down. The sequence of transmitting power-off is opposite to transmitting power-on, namely, the transmitting power supply is powered off, then the receiving power supply is powered off, and finally the static power supply is powered off.
A peripheral excitation link between a SOURCE OUT port and a CPRTHRU port of a vector network analyzer SOURCE1 is constructed by using a 211 module, a pulse modulator and 2 two-way change-over switches in a data acquisition and control unit, so that the continuous wave vector network analyzer can meet the S parameter test of a transmitting component and simultaneously meet the continuous wave excitation test of a receiving channel. When the S parameter design of the transmitting channel is carried OUT, a digital signal acquisition and control module (211 module) provides a pulse modulator with a modulation pulse which has the same period as that of a TRT signal of a component, the front edge of the pulse lags behind the TRT pulse, the rear edge of the pulse is ahead of the TRT pulse, a SW33 switch is switched to a 1-3 link, a SW34 switch is switched to the 1-3 link, a vector network analyzer SOURCE1 is output through a SOURCE OUT Port, passes through an external jumper, passes through the SW34 switch, passes through the pulse modulator, passes through a SW33 and is connected with an RTCPHRU Port, a pulse modulation signal is output from the Port1 Port, the TRT signal of the component generated by the 211 module carries OUT measurement receiver pulse rising edge measurement synchronization of a Port 2 of the vector network analyzer, and the pulse test of the transmitting channel is carried OUT. When a receiving channel is tested, the SW33 switch is switched to a 1-2 link, the SW34 switch is switched to the 1-2 link, the SOURCE OUT port of the port1 of the vector network analyzer is directly connected with the CPRTHRU port, and the port1 of the vector network analyzer outputs a continuous wave signal to meet the excitation requirement of the receiving channel.
The voltage and current values of a static power supply, a receiving power supply and a transmitting power supply of the transceiving component are monitored through a 213 module in the data acquisition and control unit, a digital trigger signal is generated through a 211 module in the data acquisition and control unit according to a detection result, the switches SW23, SW24 and SW26 are controlled to be turned on and off, the safety of the power-on and power-off process of the transceiving component is ensured, and the safety test of the component is realized.
The software negative feedback technology is that a 213 module in a data acquisition and control unit monitors a small receiving signal output by a port 2 of a power divider 1 through a port1 of a switch SW16, a port1 of the switch SW1 and a path 1-2 of a switch SW6, when an excitation signal output by the port 2 of the power divider 1 monitored by the 213 module cannot meet the test excitation requirement of a receiving channel of a receiving and transmitting component, main control software forms a negative feedback circuit in a mode of regulating a vector network analyzer source output by software until the signal level of the port 2 of the power divider 1 meets the requirement of the receiving and transmitting component for receiving the small signal; when the transmitting channel of the transmitting and receiving assembly is tested, the 213 module in the acquisition and control unit monitors the output end excitation level of the power amplifier through the 1 port of the switch SW16, the 1 port of the SW1, the 1-3 path of the SW6 and the 2 port of the SW3 through the coupling end 2 of the bidirectional coupler, and when the output signal power cannot meet the transmitting and exciting requirements of the transmitting and receiving assembly, a negative feedback loop is formed through the regulation of main control software, and the output power of the vector network signal source1 is regulated, so that the saturated working requirements of the transmitting channel of the transmitting and receiving assembly can be met.
The vector network analyzer adopts the characteristics of open link design:
the first condition is as follows:
disconnecting an external jumper wire between an RCVR R1 IN port and a Source Out port of a reference receiver of the vector network analyzer, and connecting a coupling end 1 of the double-directional coupler with the RCVR R1 IN port;
when a transmitting and receiving component transmits an S parameter test, a Port1Reference Mixer Switch of a vector network analyzer is switched to External, and the Port1 of the vector network analyzer is connected with a Reference receiver REF RECEIVER through a 1 Port of a single-pole double-throw Switch SW16, a 1 Port of a single-pole six-throw Switch SW1, a 1-3 link of a double-pole double-throw Switch SW6, a Port 2 of a single-pole double-throw Switch SW3, a power amplifier, a coupling end 1 of a double-directional coupler and a 3 Port of a single-pole double-throw Switch SW 31; when the receiving channel of the receiving and sending component is tested, the Port1Reference Mixer Switch of the vector network analyzer is switched to the Internal, and the Reference receiver Refrevever of the vector network analyzer is connected with the Internal output Source Source1 of the vector network analyzer through the Port 2 of the single-pole double-throw Switch SW31 and the Port 2 of the single-pole double-throw Switch SW 32.
Case two:
disconnecting an external jumper between a direct arm output CPLR THRU port and a Source Out port of a Source1 inside the vector network analyzer;
when the transmitting S parameter test of the transceiving component is carried Out, the digital signal acquisition and control module (211 module) provides the pulse modulator with a modulation pulse which has the same period as that of a component TRT signal, the front edge of the pulse lags behind the TRT pulse, the rear edge of the pulse is ahead of the TRT pulse, a Source1 signal of the vector network analyzer passes through a Source Out port of the straight arm, passes through a 3 port of the SW33, passes through the pulse modulator, passes through a 3 port of the SW34 and is connected with a CPLR THRU port of the vector network analyzer, so that the vector network port1 of the vector network analyzer outputs a pulse modulation signal.
A calibration method of source calibration, receiver calibration and reference source amplitude stabilization is designed, and a vector network analyzer is used for realizing accurate measurement of transmitting power. The source attenuation of the port1 of the vector network analyzer is set in a fixed state, the power meter is used for calibrating the power of the port1 by 0dBm, the power calibration result of the source1 is transmitted to the receiver, the calibration of the measurement receiver B of the vector network analyzer is realized, the source of the port1 of the vector network analyzer is stabilized in the amplitude-stabilized state of the receiver, the measurement mode of the vector network analyzer is set to be the state of B,1, and the accurate measurement of the transmitting power can be realized by the vector network analyzer by the method.
The PXIe-based high-crystal-vibration high-precision data acquisition module (comprising a 211 module and a 213 module) is used for replacing a complex detection, digital signal generation and control circuit, so that the detection functions of static voltage current, received voltage current, transmitted voltage current, a transmitted and received channel excitation signal, component primary latch BIT information and the like of a receiving and transmitting component are realized, the generation of digital signals of digitally-controlled analog switches such as component wave control output, instrument synchronous pulse signals, modulator modulation pulses, SW23, SW24, SW26, SW29, SW30 and the like is realized, the control is simple and reliable, and the stability is high.
In the specific implementation process, the test state and the test flow are specifically reconstructed as follows:
in step S1, initializing a test instrument in the transceiver module, specifically including:
all test meters are in a trigger reset phase.
In step S2, the digital signal acquisition and control module in the transceiving component splices and transmits all the working states of the transceiving component, the synchronous trigger signals of the test instruments in each working state and the working state switching delay pulses at one time according to the selected test indexes and test sequence, so as to realize the one-time control of the working states of the components and the instrument scanning data which are combined randomly in multiple states, and acquire the data of the instruments at one time; and when the tested indexes are different or the testing sequences of the indexes are different, reconstructing the working state and the testing process, and repeating the steps from S1 to S2. The method specifically comprises the following steps:
the embodiment of the invention takes the initial phase and gain of a receiving channel, multi-state attenuation and phase shift test and noise coefficient test as examples for explanation. As shown in the figure 3 of the drawings,
setting the number of test points of the component as N, firstly splicing the component in a receiving ground state test state, and then splicing N external trigger scanning signals of the vector network analyzer; and then according to the test frequency points of the compression parameters and the power scanning intervals, splicing the trigger signals of M test frequency points P power scanning points.
When attenuation and phase shift multi-state testing is carried out, splicing is carried out from the 1 st state according to the selection condition of the testing states until all the testing states are spliced, each testing state is spliced in the mode of splicing the testing state firstly and then splicing N trigger signals, splicing is carried out from the loading state 0 every time, and the state 0 is used as the reference of the multi-state testing.
When the noise coefficient test is carried out, splicing of the receiving ground state is carried out firstly, and then splicing of the trigger signal is carried out. The indexes of all the basic state tests are the same as the splicing process of the noise coefficient.
And when the tested indexes are different or the testing sequence of the indexes is different, reconstructing the testing state and the testing process again, and repeating the process.
In the specific implementation process, the digital signal acquisition and control module (211 module) issues the splicing state and selects the trigger signal, so that all receiving indexes are issued and tested at one time.
When multi-state attenuation and multi-state phase shift test are carried out, the basic state test of the M-bit attenuator is that the control code value sent by the digital signal acquisition and control module in the transceiving component of the basic state test is 20 and 2 when the base state code value of the test attenuator is all 0 1 、2 2 ……(2 M -1), when in the full-state test, the control code value sent by the digital signal acquisition and control module in the transceiving component is 0,1、2……(2 M -1); when the attenuator with M-bit ground state control bits all being 1 is tested in the basic state, the control code value sent by the digital signal acquisition and control module in the transceiving component is (2) M -1)、(2 M-1 -1)、(2 M-2 -1) …. When the M-displacement phase shifter is used for multi-state testing, the control code value sent by the digital signal acquisition and control module in the transceiving component is the same as that of the attenuator.
In the multi-state flow reconstruction flow block diagram of fig. 3, two-dimensional scanning of the compression test frequency sweep and amplitude sweep functions of the transceiving component can be realized, and 1dB compression points of input and output of the transceiving component are obtained at one time by using a software processing algorithm. The number of test frequency points for receiving the channel compression index is M, the measurement starting frequency is f1, the termination frequency is f2, and the measurement frequency step is f3= (f 2-f 1)/(M-1); the initial scanning power of each frequency point is P1 (unit is dBm), the termination scanning power is P2 (unit is dBm), and the number of scanning points of the power is N. The scanning step of power is p3= (p 2-p 1)/(N-1). The working state of the vector network analyzer is set to be segment scanning by utilizing the segment scanning function of the vector network analyzer, and the frequency and the power of each segment are independent. The vector network analyzer was subjected to a segment scan of M x N. The scanning frequency of the first section is f1, and the power is p1; the scanning frequency of the second section is f1+ f3, and the power is p1; the scanning frequency of the Mth section is f2, and the power is p1; the sweep frequency of the M +1 th segment is f1, the sweep frequency of the M N th segment is f2, and the power of the M N th segment is p1+ p3 … …. And splicing and issuing the basic state working time sequence of the assembly and M x N triggering synchronous signals of the vector network analyzer at one time by using a digital signal acquisition and control module in the transceiving assembly. And after the measurement is finished, analyzing input and assembly output power values corresponding to the input P _1 and the output P-1 according to the plurality of power scanning data of each frequency point.
The embodiment of the invention also provides a rapid and safe receiving and transmitting component testing method based on multi-state flow reconstruction, which adopts the rapid and safe receiving and transmitting component testing system based on multi-state flow reconstruction to test the receiving and transmitting component, and comprises the following steps:
according to different test indexes and test sequences, different test links are switched by using a switch matrix, according to different test states, test frequencies, scanning power and test point numbers, the working state of the component is controlled by using a data acquisition and control unit, a synchronous test starting trigger signal and a point scanning control signal of the test instrument are issued, a receiver synchronous measurement signal of the test instrument is controlled, and initial phase and gain, nonlinear phase, multi-state phase shift precision, multi-state attenuation precision, input and output 1dB compression point, noise coefficient, emission initial phase and gain, emission power and emission efficiency of a receiving and transmitting component are tested and displayed.
The following description will be made in detail with reference to the test method of the test system shown in fig. 4.
When the receiving and transmitting assembly receives the index test, different excitation sources are selected according to the tested index, and the noise coefficient and the S parameter are mainly tested by a receiving channel. The test procedure was as follows:
s100, SW6 conducts 1, 2, 3 and 4, and SW8 switch conducts 1, 2 and 3 and 4. When the noise figure is measured, the switches are switched to SW1-6, SW16-2, SW17-2, SW18-2, SW19-2, SW20-2, SW21-1 and SW2-1. When the S parameter is tested, the switches are switched to SW1-1, SW16-1, SW17-2, SW18-2, SW19-2, SW20-2, SW21-2, SW2-4. Only required signals are connected into the system at present, and other excitation instruments are connected in a matched load state, so that inaccuracy of testing caused by interference signals is prevented. The receiving is small signal testing, and the testing excitation signal is subjected to power division and then is sampled by the power divider, so that the correctness of the excitation signal is ensured, and the measurement deviation caused by a large signal and the damage to a tested piece are prevented. When the excitation source is a noise source, the signal is correct if the signal is less than the threshold value. When the excitation source is a vector network analyzer, a hardware negative feedback loop is replaced by a software adjusting method, the power level of the excitation signal is ensured to meet the design requirement, after the excitation source is detected correctly, the data acquisition module sends a control signal to close the SW29 normally open switch, and the main controller controls the program control switch SW9-1.SW3-3, SW4-3, SW5-2 were tested for H polarization. The test for V polarization is then SW5-3.
S101, the main controller controls a digital signal acquisition and control module (211 module), test state and flow reconstruction is carried out according to the sequence of acquired indexes, the number of test states and the setting sequence of channels of the test instrument, the number of channels of the transceiving component is traversed, and each channel of the transceiving component works in a load state.
S102, the main controller loads a static power supply, receives the power supply, turns on the overvoltage and overcurrent protection functions of the power supply, judges whether the output power supply amplitude is in the working range through the analog quantity acquisition and analysis module, controls the switches SW22-1 and SW25-1 through program control software in sequence if the output power supply amplitude is all correct, and controls the SW23 and SW24 normally-open switches to be closed through the hardware of the data acquisition module to complete the power-up of the assembly.
And S103, the main controller controls the digital signal acquisition and control module (211 module) to issue the test state and the test flow reconstructed in the S101, a synchronous trigger signal is started to ensure that the working time sequence can be issued to the transceiving component, the current test channel of the control component is in a receiving state, other channels are in a loading state, only one channel is in a working state at present, and meanwhile, the data scanning of all indexes to be tested is completed.
And S104, acquiring data and displaying.
And S105, in the testing process, monitoring the current, the temperature and the remote sensing return data in real time, and if abnormity is found, immediately stopping testing.
And S106, replacing the test indexes and the test sequence, and performing next flow reconstruction to complete the test of the corresponding indexes.
And S107, after all indexes are tested, the main controller controls the power supply module to cut off the power supply according to the sequence opposite to the power-on sequence, and simultaneously performs corresponding power supply voltage detection to ensure that the static power supply can be cut off after the receiving power supply is cut off. When the receiving is powered off, the main controller switch SW25-2 and the hardware of the digital signal acquisition and control module (211 module) turn on the SW24. In the static power-off state, the main controller switch SW22-2 and the hardware of the digital signal acquisition and control module (211 module) turn on the SW23. And finishing receiving power failure.
When the transmitting index of the transceiving component is tested, different excitation sources are selected according to the tested index, and the receiving channel mainly tests the power parameter and the S parameter. The test procedure was as follows:
s200, SW6 conducts 1, 3, 2 and 4, and SW8 switch conducts 1, 3 and 2 and 4. When measuring power, the switch is switched to SW1-2, SW16-2, SW17-1, SW18-2, SW19-2, SW20-2, SW21-2, SW2-3, and when testing S parameter, the switch is switched to SW1-1, SW16-1, SW17-2, SW18-2, SW19-2, SW20-2, SW21-2, SW2-4. Only required signals are connected into the system at present, and other excitation instruments are connected in a matched load state, so that inaccuracy of testing caused by interference signals is prevented. The emission signal works in a high-power saturation state, the excitation signal must be large enough to ensure that the component works in the saturation state, but the excitation signal cannot be larger than a set value, otherwise, the component is compressed excessively, index testing is inaccurate, and even the component is damaged. The method comprises the steps of opening switches SW3-2 and SW4-2 of an excitation link, inputting a high-power input signal into an analog signal acquisition unit by using a coupler, ensuring that the signal power level ensures the design requirement, replacing a negative feedback loop by using a software and analog signal acquisition mode if the signal does not meet the requirement, continuously adjusting the output signal power of a signal source and the output signal power of a vector network analyzer until the design requirement is met, and prompting link failure if the requirement is not met by multiple times of adjustment. When the S parameter is measured, because the S parameter is in a saturated working state, the S parameter test must be enough to ensure the consistency of a source excitation output signal and a signal reaching a port of a measured piece, so that the other end of the bidirectional coupler is used for coupling a part of the signal to a reference receiver of the vector network analyzer, and the measurement error of the transmitted S parameter caused by input power jitter is eliminated. SW5-2 was tested for H polarization. The test for V polarization is SW5-3.
S201, the main controller controls a digital signal acquisition and control module (211 module), carries out test state and flow reconfiguration according to the sequence of acquired indexes, the number of test states and the setting sequence of channels of the test instrument, traverses the number of the channels of the transceiving component and enables each channel of the transceiving component to work in a load state.
S202, the main controller transmits and powers up according to the sequence of a static power supply, a receiving power supply and a transmitting power supply, the overvoltage and overcurrent protection function of the power supply is turned on, meanwhile, whether the output power supply amplitude is in the working range is judged through the analog quantity acquisition and analysis module, if the output power supply amplitude is correct, the normally open switches SW22-1, SW25-1 and SW27-1 are controlled to be closed through the hardware of the data acquisition module in sequence, and the power up of the assembly is completed.
And S203, the main controller controls the digital signal acquisition and control module (211 module) to issue the test state and the test flow reconstructed in the S201, so that the working time sequence can be guaranteed to be issued to the transceiving assembly, the current test channel of the control assembly is in a transmitting state, other channels are in a load state, and only one channel is guaranteed to be in a working state. The signal acquisition module acquires the emission pulse of the assembly and judges whether to cut off the emission excitation signal according to parameters such as duty ratio, pulse width and the like. And starting a synchronous starting signal, issuing an instrument control and scanning flow according to the reconstructed testing flow, and finishing data scanning of all indexes to be tested.
And S204, acquiring data and displaying.
S205, in the testing process, the current, the temperature and the remote sensing return data are monitored in real time, and if abnormity is found, the testing is immediately stopped.
S206, replacing the test indexes and the test sequence, and performing next process reconstruction to complete the test of the corresponding indexes.
And S207, after all indexes are tested, the main controller controls the power supply module to cut off the power supply according to the sequence opposite to the power-on sequence, and simultaneously performs corresponding power supply voltage detection to ensure that the power supply is cut off according to the sequence of transmitting power-off, receiving power-off and static power supply power-off. When the transmitting power supply is powered off, the main controller switch SW27-2 and the hardware of the digital signal acquisition and control module (211 module) turn on SW26. When the power supply is cut off, the main controller switch SW25-2 and the hardware of the digital signal acquisition and control module (211 module) turn on the SW24. When the static power supply is powered off, the main controller switch SW22-2 and the hardware of the digital signal acquisition and control module (211 module) turn on the SW23. And finishing the transmission power-off.
The receiving and transmitting channels only introduce the testing flow of typical indexes, and the testing of parameter indexes such as compression points, spurs and the like can be executed by reference.
In summary, compared with the prior art, the method has the following beneficial effects:
1. according to the embodiment of the invention, the test indexes and all states and flows of instrument scanning setting can be issued at one time according to different working states of the transceiving component, and then the whole reading technology can reduce the time of state switching and data reading in the test process to the maximum extent, so that the test efficiency is improved.
2. The embodiment of the invention combines the receiving detection function, the signal acquisition and analysis function and the software test compensation technology of the test instrument by using the software negative feedback detection compensation technology, realizes the negative feedback detection compensation function on the basis of not increasing a negative feedback hardware link, can realize the detection of the excitation signal of the transmitting and receiving channel test, and meets the excitation signal requirement of the component; the signal instability and the jitter error of the transmission excitation signal link are compensated, and the accuracy of the index tests such as the transmission channel test gain and the flatness is improved.
3. The embodiment of the invention utilizes a software + hardware double locking technology, combines a switch controlled by a software SCPI instruction with an analog signal switch controlled by a digital signal, controls the opening of a switch matrix through SCPI instruction software by using instrument feedback information of a main control software according to voltage and excitation parameter setting instruction, controls the opening and double locking of a digitally controlled analog signal by using detection feedback digital signals of voltage current and excitation signals, ensures the working safety of a transceiving component in the test process and prevents the component from being burnt out.
4. The embodiment of the invention utilizes the link matching technology, so that when the multi-polarization multi-channel transceiving component works, only one path of excitation and channel is in a working state and other links and test instruments are in a link matching state during single-index single-link test, thereby reducing the measurement errors of indexes such as standing waves, amplitudes, nonlinearity and the like caused by excitation signal leakage and component working mismatching in the test process and influencing the design and repair of the component.
5. According to the embodiment of the invention, pulse width detection of all excitation signals, voltage and current and TRT signals of a test system is realized by using a 213 module in a PXIe-based high-precision data acquisition module (211 module and 213 module), and issuing of a component control state, feedback of various analog signal detection signals, control of a numerical control switch and component primary latch BIT information detection are realized by using the 211 module. The circuit is simple and reliable, and the cost is low.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A receiving and transmitting assembly rapid safety test system based on multi-state flow reconstruction is characterized by comprising:
the main controller is used for generating a first control signal of the test system and controlling the test system according to the index to be tested;
the data acquisition and control unit is used for acquiring and analyzing signals according to the first control signal and generating a second control signal;
the switch matrix is used for switching the link according to the first control signal and the second control signal;
the test instrument group is used for switching and gating different test instruments according to the link, and testing and displaying the index to be tested;
wherein the content of the first and second substances,
the data acquisition and control unit transmits the working state of the transceiving component, the synchronous trigger signal and the working state switching delay pulse required by each working state of the test instrument test transceiving component at one time according to the selected test index and the test sequence, so that the one-time control of the multi-state arbitrarily combined component working state and the test instrument scanning data is realized, and the data of the test instrument is acquired at one time; and when the tested indexes are different or the test sequences of the indexes are different, reconstructing the working state and the test flow of the transceiving component.
2. The multi-state flow reconfiguration-based transceiver component fast security test system of claim 1,
the data acquisition and control unit comprises a high-precision data acquisition module, a digital signal acquisition and control module and a power supply module;
when a receiving channel of a transmitting and receiving component is tested, a switch in a switch matrix is controlled, a high-precision data acquisition module monitors a receiving small signal output by a port 2 of a power divider 1, and when an excitation signal output by the port 2 of the power divider 1 monitored by the high-precision data acquisition module cannot meet the test excitation requirement of the receiving channel of the transmitting and receiving component, a negative feedback circuit is formed by a main controller in a mode of regulating a vector network analyzer source by software until the signal level of the port 2 of the power divider 1 meets the requirement of the transmitting and receiving component for receiving the small signal;
when the transmitting channel of the transmitting and receiving assembly is tested, the switch in the switch matrix is controlled, a high-precision data acquisition module in the acquisition and control unit monitors the output end excitation level of the power amplifier through a coupling end 2 of the bi-directional coupler, when the output signal power cannot meet the transmitting and exciting requirements of the transmitting and receiving assembly, a negative feedback loop is formed through the adjustment of main control software in the main controller, the output power of the vector network signal source1 is adjusted, and the output power meets the saturated working requirements of the transmitting channel of the transmitting and receiving assembly.
3. The rapid and safe transceiving component testing system based on multi-state flow reconfiguration of claim 1, wherein before the data acquisition and control unit issues the operating status of the transceiving component, the synchronous trigger signal required by the test instrument for measuring each operating status of the transceiving component, and the transceiving component operating status switching delay pulse, the system further comprises:
and splicing the working states of the transceiving components, synchronous trigger signals required by testing each working state testing instrument and working state switching delay pulses into a complete testing time sequence stream by utilizing a splicing technology according to the reconstructed index execution sequence.
4. The multi-state flow reconstruction based transceiver component fast security test system of claim 3, wherein the stitching technique comprises:
the number of test points of the transceiver module is set to be N,
when initial phase and gain tests are carried out, splicing of the receiving and transmitting assembly in a receiving ground state test state is carried out, and splicing of N external trigger scanning signals of the vector network is carried out;
when compression parameter testing is carried out, splicing of receiving ground state testing states of the receiving and transmitting assemblies is carried out, and according to the testing frequency points and the power scanning intervals of the compression parameters, splicing of trigger signals of M testing frequency points and P power scanning points is carried out;
when attenuation and phase shift multi-state testing is carried out, splicing is carried out from the 1 st state according to the selection condition of the testing states until all the testing states are spliced, each testing state is spliced in the mode of splicing the testing state firstly and then splicing N trigger signals, splicing is carried out from the loading state 0 every time, and the state 0 is used as the reference of the multi-state testing;
and when the noise coefficient test is carried out, splicing the receiving ground state, and splicing the trigger signal.
5. The multi-state flow reconstruction based transceiver component fast safety test system of claim 1, wherein the switch matrix comprises SCPI command controlled switches, digital signal controlled analog switches, and digital circuit switches.
6. The rapid and safe transceiver module test system based on multi-state process reconfiguration as claimed in any one of claims 1 to 5, wherein the test instrument cluster comprises a vector network analyzer;
the vector network analyzer adopts an open link design;
the first condition is as follows:
disconnecting an external jumper between an RCVR R1 IN port and a Source Out port of a reference receiver of the vector network analyzer, and connecting a coupling end 1 of the double-directional coupler with the RCVR R1 IN port
Case two:
and disconnecting an external jumper between a direct arm output CPLR THRU port and a Source Out port of an internal Source1 of the vector network analyzer.
7. The multi-state flow reconstruction based transceiver component fast safety test system of claim 6, wherein the vector network analyzer is calibrated by a power meter to an output source and a measurement receiver of the vector network analyzer, the calibration process comprising:
the attenuation of Source1 in the Power and att setting of vector network port1 of the vector network analyzer is set in a 0dB fixed state, and Power calibration is carried out on vector network port1 by using a Power meter;
during calibration, the calibration level is set at 0dBm; after the port1 of the vector network analyzer is calibrated by the power meter, the port1 and the port 2 of the vector network analyzer are directly calibrated, the power calibration result of the port1 of the vector network analyzer is transmitted to a measurement receiver of the port 2 of the vector network analyzer, and the measurement receiver of the vector network analyzer is calibrated;
and stabilizing the source of the port1 of the vector network analyzer in a receiver amplitude stabilization state, and setting the measurement mode of the vector network analyzer to be the receiver amplitude stabilization state.
8. A method for rapidly and safely testing a transceiver module based on multi-state process reconfiguration, which is characterized in that the transceiver module is tested by using the transceiver module rapid and safe testing system based on multi-state process reconfiguration according to any one of claims 1 to 7, and comprises the following steps:
according to different test indexes and test sequences, different test links are switched by using a switch matrix, according to different test states, test frequencies, scanning power and test point numbers, the working state of the component is controlled by using a data acquisition and control unit, a synchronous test starting trigger signal and a point scanning control signal of the test instrument are issued, a receiver synchronous measurement signal of the test instrument is controlled, and at least one index of initial phase and gain, nonlinear phase, multi-state phase shift precision, multi-state attenuation precision, input and output 1dB compression point, noise coefficient, emission initial phase and gain, emission power and emission efficiency of the transceiving component is tested and displayed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116068510A (en) * | 2023-02-06 | 2023-05-05 | 广州辰创科技发展有限公司 | Product testing system for automatic assembly product of phased array radar |
| CN117348949A (en) * | 2023-12-05 | 2024-01-05 | 成都玖锦科技有限公司 | Multi-channel measurement method and system based on vector network analyzer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068510A (en) * | 2023-02-06 | 2023-05-05 | 广州辰创科技发展有限公司 | Product testing system for automatic assembly product of phased array radar |
| CN116068510B (en) * | 2023-02-06 | 2024-02-02 | 广州辰创科技发展有限公司 | Product testing system for automatic assembly product of phased array radar |
| CN117348949A (en) * | 2023-12-05 | 2024-01-05 | 成都玖锦科技有限公司 | Multi-channel measurement method and system based on vector network analyzer |
| CN117348949B (en) * | 2023-12-05 | 2024-03-12 | 成都玖锦科技有限公司 | Multi-channel measurement method and system based on vector network analyzer |
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