CN109030986B - T/R assembly phase-shifting precision testing method and system based on triggering function - Google Patents
T/R assembly phase-shifting precision testing method and system based on triggering function Download PDFInfo
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- CN109030986B CN109030986B CN201810615011.9A CN201810615011A CN109030986B CN 109030986 B CN109030986 B CN 109030986B CN 201810615011 A CN201810615011 A CN 201810615011A CN 109030986 B CN109030986 B CN 109030986B
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Abstract
The invention discloses a T/R component phase shift precision testing method and a system based on a triggering function, which comprises the following steps: the state controller continuously outputs N-state phase shifting instructions to the T/R assembly after receiving the phase shifting starting instruction, outputs a measurement synchronous signal to an external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors an external trigger ready port measurement completion signal of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction starting signal. The invention has the beneficial effects that: the times of reading the test data of the vector network analyzer by the industrial personal computer in a program control manner are changed from 64 times to 1 time, so that the test efficiency is improved.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a T/R assembly phase-shifting precision testing method and system based on a triggering function.
Background
The phase shift precision is an important index for measuring the T/R component. At present, a program-controlled state controller of an industrial personal computer and a vector network analyzer are generally adopted to cooperate, the flow of a traditional phase-shifting precision testing system is shown in figure 1, the program-controlled vector network analyzer inputs an excitation signal to a T/R assembly, the program-controlled state controller performs phase-shifting operation on the T/R assembly, the program-controlled vector network analyzer starts scanning, and the program-controlled vector network analyzer acquires single-state phase-shifting quantity testing data after the scanning is finished. The 64-state phase shift test is repeatedly completed.
In the testing process, the industrial personal computer needs to communicate with the instruments (the state controller and the vector network analyzer) for 3 times in a single phase state, communicates with the instruments (the state controller and the vector network analyzer) for 192(3 multiplied by 64) times in a 64 state, and frequently communicates with the state controller and the vector network analyzer, so that the testing efficiency is seriously reduced. And the heating value of the T/R component is often larger when the T/R component works, and the temperature drift can be introduced in the lengthy test time, thereby causing larger influence on the test precision.
Therefore, in the automatic test of the phase shift precision of the T/R component, the traditional method needs an industrial personal computer to carry out the phase shift operation on the T/R component by a multi-time program control state controller and to complete the scanning and obtain the test data by a program control vector network analyzer. The test efficiency is seriously reduced by frequent communication between the industrial personal computer and the state controller as well as the vector network analyzer.
Disclosure of Invention
The invention provides a T/R assembly phase-shifting precision testing method and system based on a triggering function, which aims to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a T/R component phase-shifting precision testing method based on a triggering function, which comprises the following steps:
the state controller continuously outputs N-state phase shifting instructions to the T/R assembly after receiving the phase shifting starting instruction, inputs a measurement synchronous signal to an external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors an external trigger ready port measurement completion signal of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction starting signal.
Further, the specific implementation method is as follows:
(1) setting a scanning mode and a scanning point number of a vector network analyzer; setting a triggering mode and a triggering range of the vector network analyzer;
(2) the program-controlled T/R component is in an initial phase shift quantity state, and the state is taken as a ground state to normalize the vector network analyzer;
(3) the state controller completes phase shifting operation on the T/R component after receiving a phase shifting starting instruction, and sends a measurement synchronization signal to an external trigger input port of the vector network analyzer;
(4) carrying out a first phase-shifting state test by a vector network analyzer;
(5) the state controller monitors an external trigger ready measurement completion signal of the vector network analyzer and outputs a next state phase shift instruction to the T/R component;
(6) and (5) repeating the steps (3) to (5) until all the phase-shifting states are tested.
Further, the scanning mode of the vector network analyzer is set to be dot frequency scanning.
Further, the triggering mode of the vector network analyzer is set to be external, the triggering range is set to be a channel, the triggering mode is point triggering, and the triggering is set to be single.
Furthermore, all the phase-shift state test data are temporarily stored in the vector network analyzer, and the industrial personal computer can acquire all the phase-shift state test data temporarily stored in the vector network analyzer in a one-time program control mode.
The second purpose of the invention is to disclose a state controller for phase shift precision test, which is connected with the T/R assembly to perform phase shift operation on the T/R assembly; the state controller is characterized in that two TTL control signals are additionally arranged, one TTL control signal is connected to an external trigger input port of the vector network analyzer, and the other TTL control signal is connected to an external trigger ready port of the vector network analyzer.
Furthermore, N groups of phase shifting instructions are preset in the state controller, wherein N is a set integer value.
The third purpose of the invention is to provide a T/R component phase shift precision test system based on a trigger function, which comprises: the system comprises an industrial personal computer, the state controller for phase shift precision test, a vector network analyzer and a T/R assembly; the industrial personal computer is communicated with the state controller through the LAN bus; the vector network analyzer is in radio frequency signal communication with the T/R assembly; the state controller is in communication with the vector network analyzer and the T/R component, respectively.
Further, the state controller continuously outputs N-state phase shifting instructions to the T/R assembly after receiving the phase shifting starting instruction of the industrial personal computer, outputs a measurement synchronous signal to an external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors an external trigger ready port measurement completion signal of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction starting signal.
The invention has the beneficial effects that:
1. the invention converts the cooperation test among the industrial personal computer, the state controller and the vector network analyzer into the cooperation test among the state controller and the vector network analyzer, thereby simplifying the test composition;
2. the invention converts the triggering of the vector network analyzer from the original program control command triggering of the industrial personal computer into TTL level triggering of the controller, thereby accelerating the triggering speed;
3. the invention converts the passive blind waiting for the completion of the scanning of the vector network analyzer into the active monitoring scanning completion, thereby indirectly accelerating the scanning speed;
4. the times of reading the test data of the vector network analyzer by the industrial personal computer in a program-controlled manner are changed from 64 times to 1 time, so that the test efficiency is improved;
5. the invention greatly improves the influence of temperature drift on the test result by accelerating the test speed.
Drawings
FIG. 1 is a flow chart of a phase shift precision testing method for a T/R module in the prior art;
FIG. 2 is a flow chart of a method for testing phase shift precision of a T/R component based on a trigger function according to the present invention;
FIG. 3 is a schematic diagram of a phase shift precision test structure of a T/R component based on a trigger function.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Based on frequent communication among an industrial personal computer, a state controller and a vector network analyzer in the prior art, the testing efficiency is seriously reduced, the heating value of a T/R assembly during working is often large, temperature drift can be introduced during lengthy testing time, and the problem of great influence on the testing precision is caused.
The state controller continuously outputs N-state phase shifting instructions to the T/R assembly after receiving the phase shifting starting instruction, inputs a measurement synchronous signal to an external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors an external trigger ready port measurement completion signal of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction starting signal.
The T/R component phase-shifting precision testing method based on the trigger function is shown in FIG. 2, and the detailed setting execution process is as follows:
1) setting the scanning mode of the vector network analyzer as dot frequency, and setting the number of scanning dots as 64;
2) setting a triggering mode of the vector network analyzer as external, setting a triggering range as a channel, setting a triggering mode as point triggering, and setting triggering as single time;
3) the phase shift quantity of the program control T/R assembly is 0 degrees, and the vector network analyzer is normalized by taking the state as a ground state;
4) issuing a phase-shifting starting instruction to a state controller by an industrial personal computer;
5) after the state controller completes the phase shift operation of the T/R component, a measurement synchronization signal is sent to an external trigger input port of the vector network analyzer;
6) carrying out a first phase-shifting state test by a vector network analyzer;
7) the state controller monitors a signal of finishing measurement of an external trigger ready port of the vector network analyzer and then outputs a next state phase shift instruction;
8) the state controller and the vector network analyzer are automatically matched to complete other 63-state tests according to the steps of 5), 6) and 7);
9) after the test is finished, the channel enters a Hold mode;
10) the 64-state phase value of the vector network analyzer is acquired at one time through program control.
In order to implement the method, the invention needs to modify the state controller as follows:
two TTL control signals are added to the hardware of the state controller, one TTL control signal is connected to an external trigger input port of the vector network analyzer, and the other TTL control signal is connected to an external trigger ready port of the vector network analyzer.
64 sets of phase shifting instructions are preset on the controller firmware program. And after receiving the phase shift starting instruction of the industrial personal computer, the state controller continuously outputs a 64-state phase shift instruction to the T/R assembly. During the period, after each phase shift instruction takes effect, a measurement synchronous signal is output to an external trigger input port of the vector network analyzer to trigger scanning, and the state controller monitors an external trigger ready measurement completion signal of the vector network analyzer to serve as a next-state phase shift instruction starting signal.
In order to realize the method, the invention discloses a T/R component phase-shifting precision testing system based on a triggering function, the structure of which is shown in figure 3 and comprises the following components:
the system comprises an industrial personal computer, a state controller, a vector network analyzer and a T/R component; the industrial personal computer is communicated with the state controller and the vector network analyzer through the LAN bus; the vector network analyzer is in radio frequency signal communication with the T/R assembly; the state controller is communicated with the vector analyzer and the T/R assembly respectively;
the invention converts the cooperation test among the industrial control machine, the state controller and the vector network analyzer in the prior art into the cooperation test among the state controller and the vector network analyzer, simplifies the test composition and improves the test efficiency and precision.
The phase shift operation of the T/R component is controlled by utilizing a preset phase shift command set of the state controller to replace an industrial personal computer to carry out the phase shift operation on the T/R component by utilizing a multi-time program control state controller;
according to the method, a TTL (transistor-transistor logic) trigger signal of a state controller is used for replacing an industrial personal computer trigger command to control a vector network analyzer to trigger scanning;
the method utilizes a state controller to monitor an external trigger ready port measurement completion signal of the vector network analyzer to replace the blind waiting for the completion of the scanning of the vector network analyzer;
the invention utilizes the internal temporary storage function of the vector network analyzer to replace the frequent data communication between the industrial personal computer and the vector network analyzer.
It should be noted that the testing method of the present invention is applicable to the technical field of attenuation precision testing, in addition to the technical field of phase shift precision testing provided by the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A T/R component phase shift precision test method based on a trigger function is characterized by comprising the following steps:
the state controller continuously outputs N-state phase shifting instructions to the T/R assembly after receiving the phase shifting starting instruction, outputs a measurement synchronous signal to an external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors a measurement completion signal of an external trigger ready port of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction starting signal;
the specific implementation method comprises the following steps:
(1) setting a scanning mode and a scanning point number of a vector network analyzer; setting a triggering mode and a triggering range of the vector network analyzer;
(2) the program-controlled T/R component is in an initial phase shift quantity state, and the state is taken as a ground state to normalize the vector network analyzer;
(3) after receiving the phase-shifting starting instruction, the state controller completes the phase-shifting operation on the T/R assembly and sends a measurement synchronization signal to an external trigger input port of the vector network analyzer;
(4) carrying out a first phase-shifting state test by a vector network analyzer;
(5) the state controller monitors a signal for finishing measurement of an external trigger ready port of the vector network analyzer and then outputs a next state phase shift instruction;
(6) and (5) repeating the steps (3) to (5) until all the phase-shifting states are tested.
2. The method for testing the phase shifting precision of the T/R component based on the trigger function as claimed in claim 1, wherein the scanning mode of the vector network analyzer is set to be dot frequency scanning.
3. The method for testing the phase shifting precision of the T/R component based on the triggering function as claimed in claim 1, wherein the triggering mode of the vector network analyzer is set as external, the triggering range is channel, the triggering mode is point triggering, and the triggering is set as single time.
4. The trigger-function-based T/R assembly phase-shifting precision testing method as claimed in claim 1, wherein all phase-shifting state testing data are temporarily stored in the vector network analyzer, and the state controller acquires all phase-shifting state testing data temporarily stored in the vector network analyzer at one time.
5. A state controller for performing phase shift precision test, which is connected with the T/R assembly to perform phase shift operation on the T/R assembly by adopting the T/R assembly phase shift precision test method based on the trigger function according to any one of claims 1 to 4; the state controller is characterized in that two TTL control signals are additionally arranged, one TTL control signal is connected to an external trigger input port of the vector network analyzer, and the other TTL control signal is connected to an external trigger ready port of the vector network analyzer.
6. The state controller for performing a phase shift accuracy test as claimed in claim 5, wherein said state controller is configured to preset N sets of phase shift commands, where N is a set integer value.
7. T/R subassembly phase shift precision test system based on trigger function, its characterized in that includes: an industrial personal computer, a state controller for phase shift precision test according to any one of claims 5 to 6, a vector network analyzer and a T/R component; the industrial personal computer is communicated with the state controller through the LAN bus; the vector network analyzer is in radio frequency signal communication with the T/R assembly; the state controller is in communication with the vector network analyzer and the T/R component, respectively.
8. The system for testing the phase shifting precision of the T/R component based on the trigger function as claimed in claim 7, wherein the state controller continuously outputs N-state phase shifting instructions to the T/R component after receiving the phase shifting start instruction of the industrial personal computer, outputs a measurement synchronization signal to the external trigger input port of the vector network analyzer to trigger scanning after each state phase shifting instruction takes effect, monitors a measurement completion signal of the external trigger ready port of the vector network analyzer in real time, and takes the measurement completion signal of the current vector network analyzer as a next state phase shifting instruction start signal.
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| CN113447898A (en) * | 2021-06-28 | 2021-09-28 | 四创电子股份有限公司 | T/R assembly multi-state S parameter measuring system based on vector network |
| CN113945772B (en) * | 2021-10-14 | 2024-08-30 | 中国电子科技集团公司第四十一研究所 | Quick continuous point measurement system and method based on vector network analyzer |
| CN115085828B (en) * | 2022-08-22 | 2022-11-22 | 上海安其威微电子科技有限公司 | Phase displacement phase precision testing method and device |
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