CN115112977B - Multi-channel frequency conversion module calibration and measurement integrated automatic test platform and test method - Google Patents
Multi-channel frequency conversion module calibration and measurement integrated automatic test platform and test method Download PDFInfo
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Abstract
The invention discloses a multi-channel frequency conversion module calibration and measurement integrated automatic test platform and a test method, wherein the test platform comprises the following steps: the system comprises a measurement and control informationized server, a calibration and measurement integrated machine, a test instrument and a to-be-measured product, wherein the measurement and control informationized server is respectively connected with the calibration and measurement integrated machine and the test instrument, and the test instrument is connected with the to-be-measured product; the calibration and measurement integrated machine comprises a signal distribution module and a variable frequency calibration module, wherein a test instrument is connected with a to-be-measured product through the signal distribution module, a vector network analyzer in the test instrument is connected with the variable frequency calibration module, the variable frequency calibration module is used for calibrating the vector network analyzer, and a calibration file is obtained and stored in the vector network analyzer; the measurement and control informatization server configures test parameters, invokes a calibration file, generates a test instruction according to a test item and sends the test instruction to a test instrument; the test instrument generates a microwave radio frequency signal to the to-be-tested product and acquires test data, and the measurement and control informatization server performs local area network release on the test data. The invention carries out automatic test based on the calibration file, and has small test error.
Description
Technical Field
The invention relates to the technical field of microwave radio frequency module testing, in particular to a multi-channel frequency conversion module calibration and measurement integrated automatic test platform and a test method.
Background
In modern radar, communication and electronic countermeasure systems, frequency conversion technology is increasingly applied, and in addition, phased array technology is widely applied, so that the number of multiple frequency conversion channels is increased. The frequency conversion module has various test indexes, the traditional manual test is very time-consuming and labor-consuming, and has certain requirements on the technical level of testers, and the microwave technical foundation, the capability level, the operation proficiency and the like of the technicians can influence the test result.
The automatic test is an important direction of the microwave module test and is also a trend, so that the working efficiency can be improved, the time cost and the labor cost can be saved, and the comprehensive and deep analysis of the to-be-tested product can be conveniently carried out.
Data network informatization is also one direction of development of test systems, and in the big data age, data transmission and sharing play an increasingly important role, so that the rapid analysis capability and the rapid inspection capability of the to-be-tested product are improved. The isolation of the existing microwave frequency conversion module test system also causes inconvenience and low efficiency in the data analysis and inspection process.
In the related technology, the Chinese patent application with the application publication number of CN107733539A discloses a testing method and a system of a satellite-borne multipath microwave receiver/frequency converter, wherein the testing method comprises a switching network, a controller, a vector network analyzer, a spectrum analyzer and a power meter; the switching network selectively connects the vector network analyzer, the spectrum analyzer and the power meter to the satellite-borne multipath microwave receiver or the frequency converter under the control of the controller; the controller controls and realizes channel gain, gain flatness or gain slope test, amplitude consistency test, 1dB compression point test, on-off instruction test and gain increase and decrease instruction test. However, the scheme only relates to general measurement items of a receiver and a frequency converter, and cannot perform frequency conversion calibration and network informatization processing of test data.
Disclosure of Invention
The invention aims to solve the technical problem of reducing the test error of the multichannel frequency conversion module.
The invention solves the technical problems by the following technical means:
In one aspect, the invention provides a multi-channel frequency conversion module calibration and measurement integrated automatic test platform, which comprises: the system comprises a measurement and control informationized server, a calibration and measurement integrated machine, a test instrument and a to-be-tested product, wherein the measurement and control informationized server is respectively connected with the calibration and measurement integrated machine and the test instrument, and the test instrument is connected with the to-be-tested product through a cable; the calibration all-in-one machine comprises a signal distribution module and a variable frequency calibration module, the test instrument is connected with the to-be-tested product through the signal distribution module, and a vector network analyzer in the test instrument is connected with the variable frequency calibration module, wherein:
Calibrating a vector network analyzer by using the variable frequency calibration module to obtain a calibration file of each path of the multi-path variable frequency channel, and storing the calibration file into the vector network analyzer to serve as a test reference for testing the to-be-tested product;
The measurement and control informatization server is used for configuring the test parameters of the to-be-tested product, calling the calibration file, generating a test instruction according to a required test item and sending the test instruction to the test instrument;
the test instrument generates corresponding microwave radio frequency signals according to the received test instruction, inputs the corresponding microwave radio frequency signals to the to-be-tested product, and performs signal multiplexing and test sequence control based on the signal distribution module so as to enable the to-be-tested product output signals to be fed back to the test instrument;
The test instrument transmits test data to the measurement and control informatization server for storage;
And the measurement and control informationized server executes an INTERNET service management function and performs local area network release.
Before testing a to-be-tested product, the invention firstly uses a calibration and test integrated machine to calibrate the vector network analyzer to obtain a calibration file of each path of the multipath variable frequency channel, uses the calibration file as a test reference for testing the to-be-tested product, and stores the calibration file in an internal memory of the vector network analyzer; when the related indexes of the to-be-measured product are tested, the measurement and control informatization server calls the calibration file, the to-be-measured product is measured according to the calibration file, and the to-be-measured product is positioned on the same reference platform based on the measurement of the calibration file, so that the product testing consistency is good, and the testing error is small.
Further, the frequency conversion calibration module comprises a local oscillator power divider, a reference frequency converter, a calibration frequency converter and an intermediate frequency filter, wherein the radio frequency and intermediate frequency end of the reference frequency converter and the radio frequency end of the calibration frequency converter are respectively connected with the vector network analyzer, and the intermediate frequency end of the calibration frequency converter is connected with the vector network analyzer after passing through the intermediate frequency filter; the local oscillator power divider is connected with a reference variable frequency local oscillator port of the reference frequency converter.
Further, a reference variable frequency signal input port of the reference frequency converter is connected with a variable frequency reference input port of the vector network analyzer, and a reference variable frequency signal output port is connected with a variable frequency reference output port of the vector network analyzer;
The local oscillation input port of the local oscillation power divider is connected with the local oscillation output main port of the vector network analyzer, the reference local oscillation output port of the local oscillation power divider is connected with the reference variable frequency local oscillation port of the reference frequency converter, and the calibration local oscillation output port of the local oscillation power divider is connected with the calibration variable frequency local oscillation port of the calibration frequency converter;
And the calibration variable frequency input port of the calibration frequency converter is connected with each channel input port in the signal distribution module, and the calibration variable frequency output port is connected with each channel output port in the signal distribution module.
Further, the signal distribution module comprises a signal input matrix and a signal output matrix, wherein:
The signal input matrix comprises a multi-path power divider and a mechanical switch matrix; the signal output matrix adopts a combined mechanical switch matrix, the multi-path power divider is connected with the mechanical switch matrix, and the mechanical switch matrix is connected with the combined mechanical switch matrix;
the radio frequency signal output port of the vector signal analyzer is connected with the multi-path power divider, and the output main port of the combined mechanical switch matrix is connected with the radio frequency signal input port of the vector signal analyzer;
And each channel input/output port in the mechanical switch matrix is connected with the calibration variable frequency input/output port of the calibration frequency converter or the to-be-detected article.
Further, the measurement and control informatization server comprises a measurement and control module and an informatization module, wherein the measurement and control module comprises an instrument information configuration unit, an automatic test unit and a data processing unit, and the measurement and control informatization module comprises:
The instrument information configuration unit is used for configuring the reference information, the test items and the state parameters of the to-be-tested product and calling the calibration file;
the automatic test unit is used for generating corresponding test instructions to the test instrument according to the configured test items;
the data processing unit is used for collecting the test data, sorting and classifying the test data according to test items and channels to generate a test result report, and storing the test result report;
The informatization module comprises a WEB service unit and a remote data checking unit, wherein:
The WEB service unit is used for establishing WEB service, opening a network HTTP protocol, starting an INTERNET information service function and publishing the test result report by a local area network;
the remote data checking unit is used for the remote terminal to inquire the test result report.
Further, the test instrument also comprises a programmable power supply, a signal source, a frequency spectrograph, a vector network analyzer and a noise tester.
Further, the to-be-detected product is a plurality of microwave radio frequency modules with frequency conversion functions.
In addition, the invention also provides a multi-channel frequency conversion module calibration integrated automatic test method, which is used for testing by using the multi-channel frequency conversion module calibration integrated automatic test platform, and comprises the following steps:
The calibration and measurement integrated machine is utilized to calibrate a vector network analyzer, a calibration file of each path of the multipath variable frequency channel is obtained and stored in the vector network analyzer, and the calibration file is used as a test reference for testing the to-be-tested product;
configuring test parameters of the to-be-tested product by using the measurement and control informatization server, calling the calibration file, generating a test instruction according to a required test item, and sending the test instruction to the test instrument;
Generating a corresponding microwave radio frequency signal by using the test instrument according to the received test instruction, inputting the corresponding microwave radio frequency signal to the to-be-tested article, and performing signal multiplexing and test sequence control based on the calibration and test integrated machine so as to enable the output signal of the to-be-tested article to be fed back to the test instrument;
Transmitting test data to the measurement and control informatization server for storage by using the test instrument;
and executing an INTERNET service management function by using the measurement and control informationized server to issue a local area network.
Further, the calibration of the vector network analyzer by using the calibration integrated machine obtains a calibration file of each path of the multi-path frequency conversion channel and stores the calibration file into the vector network analyzer, and the method comprises the following steps:
connecting the input and output ends of the reference frequency converter to the reference end of the vector network analyzer, connecting the calibration frequency converter to the ports of the signal input and output matrix, and connecting the calibration frequency converter to the signal ports of the vector network analyzer through the input and output total ports of the calibration frequency converter;
Providing local oscillation signals by using a vector network analyzer, and respectively connecting the local oscillation ends of the reference frequency converter and the calibration frequency converter after passing through the local oscillation power divider;
Setting calibration parameters, calibrating, and storing the obtained multi-path calibration files into the vector network analyzer.
Further, the method for generating a corresponding microwave radio frequency signal by using the test instrument according to the received test instruction, inputting the signal to the to-be-tested article, and performing signal multiplexing and test sequence control based on the calibration and test integrated machine so as to enable the output signal of the to-be-tested article to be fed back to the test instrument, includes:
During testing, connecting the input end and the output end of the to-be-tested product to a signal input matrix in the test instrument;
Providing a local oscillator signal and an input signal by using the vector network analyzer;
The test instrument receives the test instructions sent by the measurement and control server, turns on the mechanical switches one by one, and turns off and turns on the next switch after the test is finished;
and the test instrument receives the signal of the output end of the to-be-tested article and displays the signal in an instrument display.
The invention has the advantages that:
(1) Before a to-be-tested product is tested, a vector network analyzer is calibrated by using a calibration and test integrated machine to obtain a calibration file of each path of a multi-path frequency conversion channel, wherein the calibration file contains multi-path different frequency conditions in the frequency conversion channel, and the calibration file is used as a test reference for testing the to-be-tested product and is stored in an internal memory of the vector network analyzer; when the related indexes of the to-be-measured product are tested, the measurement and control informatization server calls the calibration file, the to-be-measured product is measured according to the calibration file, and the to-be-measured product is positioned on the same reference platform based on the measurement of the calibration file, so that the product testing consistency is good, and the testing error is small.
(2) Aiming at test data, the measurement and control informatization server introduces means such as database management, internal local area network release and the like, the informatization is greatly improved, the data sharing capability is enhanced, the data security is increased, the data auditing, checking, analyzing and troubleshooting efficiency is greatly improved, and the production quality inspection efficiency is greatly improved.
(3) The frequency conversion calibration module comprises a plurality of frequency converters, the automatic test integration level of the plurality of frequency converters is improved, the model expansion of the frequency converters and the filters can be carried out according to the actual working frequency of the to-be-tested product, the expandability is enhanced, the test adaptability is enhanced, and the test range is enlarged.
(4) The local oscillation required by the invention is generated by the vector network analyzer, and the frequency range is large and the adjustability is good.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of an integrated calibration and measurement automatic test platform for a multi-channel frequency conversion module according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a system application of the automatic test platform according to the first embodiment of the present invention;
FIG. 3 is a block diagram of an automatic index test provided by a first embodiment of the present invention;
FIG. 4 is a block diagram of a calibration and measurement all-in-one machine according to a first embodiment of the present invention;
fig. 5 is a vector network variable frequency calibration block diagram provided by the first embodiment of the present invention;
Fig. 6 is a block diagram of a vector network frequency conversion test according to the first embodiment of the present invention;
Fig. 7 is a flowchart of a calibration integrated automatic test method for a multi-channel frequency conversion module according to a second embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, fig. 2, and fig. 3, a calibration and measurement integrated automatic test platform for a multi-channel frequency conversion module according to a first embodiment of the present invention includes: the system comprises a measurement and control informationized server 10, a calibration and measurement integrated machine 20, a test instrument 30 and a to-be-tested product 40, wherein the measurement and control informationized server 10 is respectively connected with the calibration and measurement integrated machine 20 and the test instrument 30, and the test instrument 30 is connected with the to-be-tested product 40 through a cable; the calibration all-in-one machine 20 comprises a signal distribution module 21 and a frequency conversion calibration module 22, the test instrument 30 is connected with the to-be-tested product 40 through the signal distribution module 21, and a vector network analyzer in the test instrument 30 is connected with the frequency conversion calibration module 22, wherein:
Calibrating a vector network analyzer by using the variable frequency calibration module 22 to obtain calibration files of each path of the multi-path variable frequency channel, and storing the calibration files into the vector network analyzer to serve as a test reference for testing the to-be-tested product 40;
The measurement and control informatization server 10 is used for configuring the test parameters of the to-be-tested product 40, calling the calibration file, generating a test instruction according to the required test item and sending the test instruction to the test instrument 30;
The test instrument 30 generates a corresponding microwave radio frequency signal according to the received test instruction, inputs the signal to the to-be-tested product 40, and performs signal multiplexing and test sequence control based on the signal distribution module 21 so as to enable the output signal of the to-be-tested product 40 to be fed back to the test instrument 30;
The test meter 30 transmits test data to the measurement and control informatization server 10 for storage;
the measurement and control informationized server 10 executes an INTERNET service management function to perform local area network release.
It should be noted that, the to-be-tested product 40 is a multi-path microwave radio frequency module with a frequency conversion function, and is connected with the test instrument 30, and receives the microwave signal through the test instrument 30 and outputs a corresponding feedback signal to the test instrument 30 according to different index commands issued by the measurement and control server, so that different test projects perform different test works.
The frequency conversion calibration module 22 is used for calibrating the frequency conversion module before testing and comparing a reference standard in testing, and is connected with the test instrument 30 during calibration, and is partially connected with the test instrument 30 during testing the to-be-tested product 40 to serve as the standard of the reference frequency converter; meanwhile, the types of the reference frequency converter, the calibration frequency converter and the filter can be expanded according to the working frequency of the to-be-measured product 40, so that the reference frequency converter, the calibration frequency converter and the filter are matched with the working frequency of the to-be-measured product 40.
The calibration and test integrated machine provided in the embodiment integrates two functions of calibration and test, and is used for performing calibration and subsequent automatic test of the test instrument before automatic test according to the requirements of the test index items; the vector network analyzer is connected with the to-be-measured product and is used for receiving the instruction sent by the measurement and control informatization server, generating a microwave signal and receiving an output signal of the to-be-measured product; before the multi-channel frequency conversion module is tested, a frequency conversion calibration module is connected with a signal matching module to calibrate a vector network analyzer, so that a calibration file of each path of the multi-path frequency conversion channel is obtained, the calibration file contains multi-path different frequency conditions in the frequency conversion channel, the calibration file is used as a test reference for testing a product to be tested, and the calibration file is stored in an internal memory of the vector network analyzer; when the related indexes of the to-be-measured product are tested, the measurement and control informatization server calls the calibration file, the to-be-measured product is measured according to the calibration file, and the to-be-measured product is positioned on the same reference platform based on the measurement of the calibration file, so that the product testing consistency is good, and the testing error is small.
Furthermore, the measurement and control informatization server 10 in this embodiment has the characteristic of data informatization, establishes a data release webpage by opening a WEB service, and invokes the test information of the local database by using an HTTP service, thereby meeting the data query and test requirements of any to-be-tested product 40 at any stage in the same local area network. The test platform has high test efficiency and test consistency, can greatly reduce errors caused by human factors on the test, is convenient for a project group and a quality department to inquire and test the to-be-tested product 40 in time, accelerates the production process progress, and greatly saves time cost and labor cost.
In an embodiment, as shown in fig. 4, the frequency conversion calibration module 22 includes a local oscillator power divider, a reference frequency converter, a calibration frequency converter and an intermediate frequency filter, wherein the radio frequency and intermediate frequency ends of the reference frequency converter and the radio frequency end of the calibration frequency converter are respectively connected to the vector network analyzer, and the intermediate frequency end of the calibration frequency converter is connected to the vector network analyzer after passing through the intermediate frequency filter; the local oscillator power divider is connected with a reference variable frequency local oscillator port of the reference frequency converter.
In an embodiment, a reference variable frequency signal input port of the reference frequency converter is connected with a variable frequency reference input port of the vector network analyzer, and a reference variable frequency signal output port is connected with a variable frequency reference output port of the vector network analyzer;
The local oscillation input port of the local oscillation power divider is connected with the local oscillation output main port of the vector network analyzer, the reference local oscillation output port of the local oscillation power divider is connected with the reference variable frequency local oscillation port of the reference frequency converter, and the calibration local oscillation output port of the local oscillation power divider is connected with the calibration variable frequency local oscillation port of the calibration frequency converter;
the calibration variable frequency input port of the calibration variable frequency device is connected with each channel input port in the signal distribution module 21, and the calibration variable frequency output port is connected with each channel output port in the signal distribution module 21.
The variable frequency calibration module 22 is used for performing variable frequency calibration and reference comparison during the test before the test, and connects the calibration variable frequency input port of the calibration frequency converter to each channel input port of the signal distribution module 21 and the calibration variable frequency output port to each channel output port of the signal distribution module 21 during the instrument calibration process before the test.
It should be noted that, before testing some important indexes (such as gain, phase and group delay), the frequency conversion calibration module 22 in the calibration integrated machine 20 must perform calibration of the vector network analyzer. The frequency conversion calibration module 22 utilizes the internal two-power divider to respectively send local oscillation signals generated by the vector network analyzer to local oscillation ports of the reference frequency converter and the calibration frequency converter, and the radio frequency and intermediate frequency ends of the two frequency converters are respectively connected to the vector network analyzer, wherein the intermediate frequency end of the calibration frequency converter is connected with the filter and then connected to the vector network analyzer. The calibrated file is stored in the internal memory of the vector network analyzer as a test standard for testing the sample 40. When the related indexes of the to-be-measured product 40 are tested, the automatic test software of the measurement and control server calls the calibration file in the configuration interface, and the to-be-measured product 40 is measured according to the calibration file. Based on the measurement of the calibration file, the to-be-measured product 40 is positioned on the same reference platform, so that the product test consistency is good, and the test error is small.
In one embodiment, the signal distribution module 21 includes a signal input matrix and a signal output matrix, wherein:
The signal input matrix comprises a multi-path power divider and a mechanical switch matrix; the signal output matrix adopts a combined mechanical switch matrix, the multi-path power divider is connected with the mechanical switch matrix, and the mechanical switch matrix is connected with the combined mechanical switch matrix;
the radio frequency signal output port of the vector signal analyzer is connected with the multi-path power divider, and the output main port of the combined mechanical switch matrix is connected with the radio frequency signal input port of the vector signal analyzer;
Each channel input/output port in the mechanical switch matrix is connected with the calibration variable frequency input/output port of the calibration variable frequency device or connected with the to-be-tested sample 40.
The signal distribution module 21 is used for connecting the test instrument 30 and the to-be-tested product 40 in the multi-channel test and transmitting microwave signals. The multichannel power divider is used for inputting multichannel signals, the number of channels can be expanded according to the number of 40 channels of the to-be-detected product, and microwave input signals are distributed by the multichannel power divider and then are connected with the mechanical switch matrix; the mechanical switch matrix can be used for carrying out path number expansion according to the number of the channels of the to-be-tested product 40 and is used for switching the on-off of the test multipath channels according to the control instruction so as to realize the test order.
It should be noted that, the to-be-measured product 40 is a multi-channel frequency conversion module, and the number of the multi-channel power dividers and the internal matrix switches of the signal distribution module 21 in the extended and expandable calibration and measurement integrated machine 20 is determined according to the number of channels of the frequency conversion module; according to the working frequency of the frequency conversion module, the model types of the reference frequency converter and the calibration frequency converter in the frequency conversion calibration module 22 of the calibration and measurement integrated machine 20 are expanded. After receiving a microwave signal from the test instrument, the signal distribution module 21 performs power division through a multi-path power divider, the output ends of the multi-path power divider are in one-to-one correspondence with mechanical switches in the test equipment, and the other ends of the mechanical switches are connected to the input ends of multi-path channels of the to-be-tested product 40 by using radio frequency cables in one-to-one correspondence. Each output of the to-be-tested product is connected with mechanical switches in the test equipment in one-to-one correspondence, and the connected mechanical switches are combined into one path through multiple combining switches and are connected to the input end of the test instrument.
The calibration and test integrated machine 20 provided in this embodiment improves the automatic test integration level of the multi-path frequency converter, enhances the expandability, enhances the test adaptability, and increases the test range.
Specifically, as shown in fig. 5, before testing, the calibration of vector network frequency conversion is performed, and during calibration, the calibration all-in-one machine 20 is used to connect the input/output end of the reference frequency converter to the reference end of the vector network analyzer, and the calibration frequency converter is connected to the input/output port through a single-path input/output port in the input/output mechanical switch matrix in the signal distribution module 21, and then is connected to the signal port of the vector network analyzer. The vector network analyzer provides local oscillation signals, the local oscillation signals are respectively connected with the reference frequency converter and the local oscillation end of the calibration frequency converter after passing through the local oscillation power divider of one-to-two, calibration parameters (frequency and bandwidth) are set, calibration is carried out, a single-path calibration file is stored in the vector network analyzer, the calibration process is repeated after one-path channel is replaced until all paths are calibrated, and the calibration files of all paths are stored in the vector network analyzer.
As shown in fig. 6, in the configuration module of the automatic test software of the measurement and control informatization server 10, the position of the calibration file is specified, and the calibration file is used as the initialization state of the test. During testing, the input end of the multi-channel to-be-tested product 40 is connected with the input mechanical switch matrix in the signal distribution module 21, the output end of the multi-channel to-be-tested product 40 is connected with the output mechanical switch matrix in the signal distribution module 21, and the vector network analyzer provides local oscillation signals and input signals. The input-output mechanical switch matrix in the calibration and measurement integrated machine 20 receives the instruction sent by the measurement and control server, the mechanical switches are turned on one by one, and the next switch is turned off and turned on after the test. The test meter 30 receives the signal at the output end of the to-be-tested product 40, and displays the signal in the meter display, and the related test data is returned to the measurement and control informatization server 10, and is summarized and processed by the automatic test software to form test result data.
It should be noted that, in this embodiment, the multi-channel frequency conversion module performs channel-by-channel test, the test operation is performed in series, and the processes are independent and do not affect each other. Moreover, the required local oscillation is generated by a vector network instrument, the frequency range is large, and the adjustability is good.
In an embodiment, the measurement and control informatization server 10 includes a measurement and control module and an informatization module, where the measurement and control module includes an instrument information configuration unit, an automatic test unit and a data processing unit, and the measurement and control module includes:
The meter information configuration unit is configured to configure reference information, test items and status parameters of the to-be-tested product 40 and call the calibration file;
The automatic test unit is used for generating corresponding test instructions to the test instrument 30 according to the configured test items;
the data processing unit is used for collecting the test data, sorting and classifying the test data according to test items and channels to generate a test result report, and storing the test result report;
The informatization module comprises a WEB service unit and a remote data checking unit, wherein:
The WEB service unit is used for establishing WEB service, opening a network HTTP protocol, starting an INTERNET information service function and publishing the test result report by a local area network;
the remote data checking unit is used for the remote terminal to inquire the test result report.
Specifically, the meter information configuration unit is used for a meter information configuration subunit, a test information configuration subunit and a test item configuration subunit: when the device operates, the instrument information configuration subunit is used for configuring instrument information, such as an instrument type number driver, an IP address, a physical network card address and the like, at the instrument information configuration module, establishing connection between an instrument and the measurement and control information server, and transmitting test data;
The test information configuration subunit is used for remarking some environmental information of the test process, such as test stage, test place, test time, environmental temperature, environmental humidity, test project, test batch, test model and the like, calling a calibration file in the instrument and recording the test parameters into the test database;
the test item configuration subunit specifically configures corresponding test items such as an amplitude phase test, a frequency spectrum test, a noise test and the like according to the index requirements.
Specifically, the automatic test unit includes an amplitude-phase test subunit, a spectrum test subunit, and a noise test subunit: when the device operates, corresponding test items to be tested are selected in an automatic test unit of the test module, the automatic test unit generates corresponding test instructions to the control instrument, and corresponding microwave radio frequency signals generated by the instrument are transmitted to the to-be-tested product 40 through the calibration integrated machine 20, so that automatic test is performed.
Specifically, the data processing unit comprises a data acquisition subunit, a data arrangement subunit and a data storage subunit: the data acquisition subunit is configured to collect information, such as data generated during the acquisition test and a screen shot of the meter, from the meter by issuing instructions to the test meter 30.
The data arrangement subunit is used for carrying out preliminary classification, integration and summarization on the collected test data to form a complete and detailed test result.
The data storage subunit is used for classifying the test results according to the test items and the channels, storing the test results into a database, and establishing corresponding index information in the database, so that the search is convenient.
Further, the measurement and control informatization server 10 is connected with the test instrument 30 through a network cable, and the test instrument 30 is connected with the to-be-measured article 40 through a radio frequency cable and a low frequency cable. The automatic test software in the measurement and control informatization server 10 firstly carries out configuration of instrument parameters through a man-machine interaction interface:
And selecting the instrument to be connected in the man-machine interaction interface, filling the IP address of the instrument, and carrying out interconnection and intercommunication between the automatic test software and the instrument, wherein the on-off state of the instrument is displayed by a clear indicator lamp on the interface of the automatic test software, and the instrument which is not connected successfully has warning prompt.
And inputting relevant information of the test, such as data information of test date, test place and test stage, item code number of the to-be-tested product, model number of the to-be-tested product, serial number of the to-be-tested product and the like, and processing and integrating the information and the test data into a test data record table.
Inputting a voltage value of a power supply at a human-computer interaction interface, and turning on a power switch of an instrument to supply power to a to-be-detected product; meanwhile, the voltage and current value of the to-be-measured product can be fed back in the software interface, and whether the to-be-measured product works normally or not is monitored.
At the man-machine interaction interface, according to the test requirement, selecting an electrical performance index item to be tested, generating a corresponding instruction by test software, transmitting the instruction to a test related instrument through a network cable, generating corresponding feedback by the test instrument according to the received instruction, inputting a signal to a to-be-tested article and receiving signal information output by the to-be-tested article, displaying the signal information in the instrument, simultaneously, transmitting the related signal information to a measurement and control server by the instrument through the network cable, automatically summarizing the signal information in automatic test software, sorting and generating a test result report, storing the test result report in a SQL SERVER database of the measurement and control informatization server, and publishing the test result report through an Internet service management function of the server.
In this embodiment, the measurement and control informationized server 10 is used for controlling an automatic test program of a test instrument and a product to be tested, and can be used for configuring reference data of the product to be tested 40, configuring test items of the product to be tested and configuring state parameters of the test instrument; the method can also be used for acquiring calibration data files of the product to be tested and the test instrument; and the method can also generate a specific automatic test instruction according to the test item of the product to be tested, issue the automatic test instruction to the calibrated test instrument, collect test data generated in the automatic test process of the calibrated test instrument, generate a test result report according to the test data, and store test data and backup data.
Further, the WEB service unit is configured to open a network HTTP protocol on the measurement and control informationized server 10, and open an internet information service function, so that test data in the server database can be accessed by a computer having a corresponding authority in the local area network. The remote data checking unit is used for connecting the server database by using the network programming language and realizing the function of inquiring the test data according to the customized page.
In this embodiment, the WEB service unit in the measurement and control informationized server 10 establishes WEB services at the same time, opens the INTERNET information service function, performs relevant configuration of databases and file directories, opens HTTP access ports, loads a network programming language development environment, and creates a remote access test data query and inspection information platform by using the network programming language and the local database, so that any authorized computer in the local area network can access the server, and can select and query test data of any model and any number at any stage according to customization requirements, and can also perform comparison and analysis between test data of different batches of to-be-tested products.
Wherein the informationized data inspection unit is developed by adopting a network programming language ASP and a database SQL SEVER. SQL SERVER has expandability and high efficiency, can fully utilize the advantages of WINDOWS NT, has advanced system management, supports a WINDOWS graphic management tool, and supports local and remote system management and configuration; the system has powerful transaction processing function, supports a symmetrical multiprocessor structure, provides a superior database platform for data of a test system by the compact formation of a powerful management tool and the Internet, and can perform query and check of the test data and multi-round and multi-batch data comparison by the multiline Cheng Gaoxiao.
The automatic test software adopts LABVIEW development, LABVIEW is a graphical programming language which uses icons to replace text to create application programs, and is different from the traditional text programming language in determining program execution sequence according to statement and instruction sequence, LABVIEW adopts a data flow programming mode, the data flow between nodes in a program block diagram determines VI and function execution sequence, the generated program is in a block diagram form, human-computer interaction is easy, the ideal choice of developing measurement or control systems is realized, and when the LABVIEW is used for designing, testing and realizing an instrument system, the working efficiency can be greatly improved. The lab view compiled automatic test software is connected with the test instrument 30 in the measurement and control informatization server 10 through a network port, transmits test instructions and data acquisition instructions through a TCP/IP protocol, and processes data in the measurement and control informatization server 10.
In an embodiment, the test meter 30 further includes a programmable power source, a signal source, a spectrometer, a noise tester, and the like, where each meter is connected to the measurement and control informatization server 10 through a LAN port, and is configured to receive an automatic test instruction according to a requirement of a test index item, automatically test the calibrated product to be tested according to the automatic test instruction, generate test data, and transmit the data to the informatization server. Wherein:
The programmable power supply is connected with the to-be-measured product 40 and is used for receiving the instruction sent by the measurement and control server, generating corresponding voltage and outputting the voltage to the to-be-measured product 40, and supplying power to the to-be-measured product 40 so as to enable the to-be-measured product 40 to work normally;
The signal source is connected with the to-be-measured product 40 and is used for receiving the instruction sent by the measurement and control server, generating a corresponding microwave signal and outputting the corresponding microwave signal to the to-be-measured product 40;
the spectrometer is connected with the to-be-measured product 40 and is used for receiving the instruction sent by the measurement and control server and receiving the microwave signal output by the to-be-measured product 40;
the noise tester is connected to the to-be-tested product 40, and is configured to receive a microwave signal output by the to-be-tested product 40.
According to the multi-channel frequency conversion module calibration and measurement integrated automatic information platform, the electrical performance index test and summarization processing tasks of the to-be-measured product can be completed through the software and hardware interactive collocation construction, and the corresponding expansion test can be performed according to the to-be-measured product. Basic information of the test instrument can be configured through automatic test software of the measurement and control server, test auxiliary information such as test time is input, and visual informatization of the test is perfected; the working state of the to-be-tested product is obtained, the normal operation of the test is monitored, some fault information in the test operation can be positioned in time, the problem can be found conveniently and rapidly, the fault can be cleared in time, and the test efficiency is improved; the calibration files of the product to be tested and the test instrument are obtained, so that the inquiry, summarization and arrangement of the test information of the product to be tested are facilitated; the data system has the characteristic of data informatization, network information sharing and remote data checking service are developed, and the flow efficiency of data transfer storage and quality comparison and verification is greatly improved. The multi-channel frequency conversion module calibration and measurement integrated automatic information platform is refined and necessary, stable and efficient in operation, errors and incorrect operation possibility of manual operation in the test process are reduced, unnecessary manual intervention is avoided, the test process is safe and convenient, and labor cost and time cost are saved.
In addition, as shown in fig. 7, a second embodiment of the present invention provides a method for automatically testing a calibration and measurement unit of a multi-channel frequency conversion module, which is characterized in that the method is used for testing by using the automatic test platform for testing a calibration and measurement unit of a multi-channel frequency conversion module according to the first embodiment, and the method comprises the following steps:
s10, calibrating a vector network analyzer by using the calibrating and testing integrated machine to obtain a calibration file of each path of the multipath variable frequency channel, and storing the calibration file into the vector network analyzer to serve as a test reference for testing the to-be-tested product;
s20, configuring test parameters of the to-be-tested product by utilizing the measurement and control informatization server, calling the calibration file, generating a test instruction according to a required test item, and sending the test instruction to the test instrument;
s30, generating a corresponding microwave radio frequency signal by using the test instrument according to the received test instruction, inputting the signal to the to-be-tested article, and performing signal multiplexing and test sequence control based on the calibration and test integrated machine so as to enable the output signal of the to-be-tested article to be fed back to the test instrument;
S40, transmitting test data to the measurement and control informatization server by using the test instrument for storage;
s50, executing an INTERNET service management function by using the measurement and control informationized server, and publishing the local area network.
In one embodiment, the step S10 specifically includes the following steps:
connecting the input and output ends of the reference frequency converter to the reference end of the vector network analyzer, connecting the calibration frequency converter to the ports of the signal input and output matrix, and connecting the calibration frequency converter to the signal ports of the vector network analyzer through the input and output total ports of the calibration frequency converter;
specifically, the radio frequency input end of the calibration frequency converter is connected to an input mechanical switch matrix in the signal distribution module, then connected to the radio frequency PORT1 of the vector network analyzer through the main PORT of the input mechanical switch matrix, and the intermediate frequency output end of the calibration frequency converter is connected to the intermediate frequency PORT2 of the vector network analyzer through an output mechanical switch matrix in the signal distribution module after being connected to the calibration filter.
Providing local oscillation signals by using a vector network analyzer, and respectively connecting the local oscillation ends of the reference frequency converter and the calibration frequency converter after passing through the local oscillation power divider;
Setting calibration parameters, calibrating, and storing the obtained multi-path calibration files into the vector network analyzer.
In one embodiment, the step S30 specifically includes the following steps:
During testing, connecting the input end and the output end of the to-be-tested product to a signal input matrix in the test instrument;
Providing a local oscillator signal and an input signal by using the vector network analyzer;
The test instrument receives the test instructions sent by the measurement and control server, turns on the mechanical switches one by one, and turns off and turns on the next switch after the test is finished;
and the test instrument receives the signal of the output end of the to-be-tested article and displays the signal in an instrument display.
In the embodiment, the frequency conversion calibration is carried out on the to-be-tested product before the test is carried out, so that a calibration file is obtained, and the test is carried out based on the calibration file, thereby realizing accurate automatic test; meanwhile, the measurement and control informatization server has the characteristic of data informatization, establishes a data release webpage by opening WEB service, and invokes test information of a local database by HTTP service, thereby meeting the data query and test requirements of any to-be-tested product at any stage in the same local area network. The test platform has high test efficiency and test consistency, can greatly reduce errors caused by human factors on test, is convenient for a project group and a quality department to inquire and test the to-be-tested product in time, accelerates the production process progress, and greatly saves time cost and labor cost.
It should be noted that, the method for automatically testing the calibration integration of the multi-channel frequency conversion module is used for realizing the testing flow of the device for automatically testing the calibration integration of the multi-channel frequency conversion module, has corresponding characteristics and effects, and is not redundant here.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, for example, may be considered as a ordered listing of executable instructions for implementing logical functions, and may be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. An integrative automatic test platform is surveyed to multichannel variable frequency module school, a serial communication port, test platform includes: the system comprises a measurement and control informationized server, a calibration and measurement integrated machine, a test instrument and a to-be-tested product, wherein the measurement and control informationized server is respectively connected with the calibration and measurement integrated machine and the test instrument, and the test instrument is connected with the to-be-tested product through a cable; the calibration all-in-one machine comprises a signal distribution module and a variable frequency calibration module, the test instrument is connected with the to-be-tested product through the signal distribution module, and a vector network analyzer in the test instrument is connected with the variable frequency calibration module, wherein:
Calibrating a vector network analyzer by using the variable frequency calibration module to obtain a calibration file of each path of the multi-path variable frequency channel, and storing the calibration file into the vector network analyzer to serve as a test reference for testing the to-be-tested product;
The measurement and control informatization server is used for configuring the test parameters of the to-be-tested product, calling the calibration file, generating a test instruction according to a required test item and sending the test instruction to the test instrument;
the test instrument generates corresponding microwave radio frequency signals according to the received test instruction, inputs the corresponding microwave radio frequency signals to the to-be-tested product, and performs signal multiplexing and test sequence control based on the signal distribution module so as to enable the to-be-tested product output signals to be fed back to the test instrument;
The test instrument transmits test data to the measurement and control informatization server for storage;
And the measurement and control informationized server executes an INTERNET service management function and performs local area network release.
2. The multi-channel frequency conversion module calibration integrated automatic test platform according to claim 1, wherein the frequency conversion calibration module comprises a local oscillator power divider, a reference frequency converter, a calibration frequency converter and an intermediate frequency filter, wherein a radio frequency end and an intermediate frequency end of the reference frequency converter and a radio frequency end of the calibration frequency converter are respectively connected with the vector network analyzer, and an intermediate frequency end of the calibration frequency converter is connected with the vector network analyzer after passing through the intermediate frequency filter; the local oscillator power divider is connected with a reference variable frequency local oscillator port of the reference frequency converter.
3. The multi-channel frequency conversion module calibration and measurement integrated automatic test platform according to claim 2, wherein a reference frequency conversion signal input port of the reference frequency converter is connected with a frequency conversion reference input port of the vector network analyzer, and a reference frequency conversion signal output port is connected with a frequency conversion reference output port of the vector network analyzer;
The local oscillation input port of the local oscillation power divider is connected with the local oscillation output main port of the vector network analyzer, the reference local oscillation output port of the local oscillation power divider is connected with the reference variable frequency local oscillation port of the reference frequency converter, and the calibration local oscillation output port of the local oscillation power divider is connected with the calibration variable frequency local oscillation port of the calibration frequency converter;
And the calibration variable frequency input port of the calibration frequency converter is connected with each channel input port in the signal distribution module, and the calibration variable frequency output port is connected with each channel output port in the signal distribution module.
4. The integrated multi-channel frequency conversion module calibration automatic test platform of claim 2, wherein the signal distribution module comprises a signal input matrix and a signal output matrix, wherein:
The signal input matrix comprises a multi-path power divider and a mechanical switch matrix; the signal output matrix adopts a combined mechanical switch matrix, the multi-path power divider is connected with the mechanical switch matrix, and the mechanical switch matrix is connected with the combined mechanical switch matrix;
The output port of the radio frequency signal of the vector network analyzer is connected with the multi-path power divider, and the output port of the combined mechanical switch matrix is connected with the input port of the radio frequency signal of the vector network analyzer;
and each channel input/output port in the mechanical switch matrix is connected with the calibration variable frequency input/output port of the calibration frequency converter or the to-be-detected product.
5. The multi-channel frequency conversion module calibration integrated automatic test platform according to claim 1, wherein the measurement and control informatization server comprises a measurement and control module and an informatization module, the measurement and control module comprises an instrument information configuration unit, an automatic test unit and a data processing unit, wherein:
The instrument information configuration unit is used for configuring the reference information, the test items and the state parameters of the to-be-tested product and calling the calibration file;
the automatic test unit is used for generating corresponding test instructions to the test instrument according to the configured test items;
the data processing unit is used for collecting the test data, sorting and classifying the test data according to test items and channels to generate a test result report, and storing the test result report;
The informatization module comprises a WEB service unit and a remote data checking unit, wherein:
The WEB service unit is used for establishing WEB service, opening a network HTTP protocol, starting an INTERNET information service function and publishing the test result report by a local area network;
the remote data checking unit is used for the remote terminal to inquire the test result report.
6. The integrated multi-channel variable frequency module calibration and measurement automatic test platform according to claim 1, wherein the test meter further comprises a programmable power supply, a signal source, a spectrometer and a noise tester.
7. The automatic test platform for calibrating and testing a multi-channel frequency conversion module according to claim 1, wherein the to-be-tested product is a multi-channel microwave radio frequency module with a frequency conversion function.
8. A multi-channel frequency conversion module calibration integrated automatic test method, characterized in that the test method is used for testing by using the multi-channel frequency conversion module calibration integrated automatic test platform according to any one of claims 1-7, and the test method comprises the following steps:
The calibration and measurement integrated machine is utilized to calibrate a vector network analyzer, a calibration file of each path of a plurality of paths of frequency conversion channels is obtained and stored in the vector network analyzer to serve as a test reference for testing the to-be-tested product, the vector network analyzer is connected with the frequency conversion calibration module, and the frequency conversion calibration module comprises a local oscillator power divider, a reference frequency converter, a calibration frequency converter and an intermediate frequency filter;
configuring test parameters of the to-be-tested product by using the measurement and control informatization server, calling the calibration file, generating a test instruction according to a required test item, and sending the test instruction to the test instrument;
Generating a corresponding microwave radio frequency signal by using the test instrument according to the received test instruction, inputting the corresponding microwave radio frequency signal to the to-be-tested article, and performing signal multiplexing and test sequence control based on the calibration and test integrated machine so as to enable the output signal of the to-be-tested article to be fed back to the test instrument;
Transmitting test data to the measurement and control informatization server for storage by using the test instrument;
and executing an INTERNET service management function by using the measurement and control informationized server to issue a local area network.
9. The method for automatically testing the calibration integration of the multichannel variable frequency module according to claim 8, wherein the step of using the calibration integration machine to calibrate the vector network analyzer to obtain the calibration file of each channel of the multichannel variable frequency channel and storing the calibration file in the vector network analyzer comprises the steps of:
connecting the input and output ends of the reference frequency converter to the reference end of the vector network analyzer, connecting the calibration frequency converter to the ports of the signal input and output matrix, and connecting the calibration frequency converter to the signal ports of the vector network analyzer through the input and output total ports of the calibration frequency converter;
Providing local oscillation signals by using a vector network analyzer, and respectively connecting the local oscillation ends of the reference frequency converter and the calibration frequency converter after passing through the local oscillation power divider;
Setting calibration parameters, calibrating, and storing the obtained multi-path calibration files into the vector network analyzer.
10. The method for automatically testing the calibration integration of the multi-channel frequency conversion module according to claim 8, wherein the generating, by the test meter, the corresponding microwave radio frequency signal according to the received test command is input to the to-be-tested product, and the multiplexing of signals and the control of the test sequence are performed based on the calibration integration machine, so that the output signal of the to-be-tested product is fed back to the test meter, comprising:
During testing, connecting the input end and the output end of the to-be-tested product to a signal input matrix in the test instrument;
Providing a local oscillator signal and an input signal by using the vector network analyzer;
The test instrument receives the test instruction sent by the measurement and control informatization server, turns on the mechanical switches one by one, and turns off and turns on the next switch after the test is finished;
and the test instrument receives the signal of the output end of the to-be-tested article and displays the signal in an instrument display.
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| CN112965657A (en) * | 2021-02-04 | 2021-06-15 | 上海创远仪器技术股份有限公司 | Method, device, processor and storage medium for realizing storage processing aiming at measurement state of vector network analysis instrument |
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| CN112965657A (en) * | 2021-02-04 | 2021-06-15 | 上海创远仪器技术股份有限公司 | Method, device, processor and storage medium for realizing storage processing aiming at measurement state of vector network analysis instrument |
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