Metrological verification system universal for two types of microwave signal sources

Abstract

The utility model discloses a metrological verification system universal for two types of microwave signal sources, comprising a control unit which is a PXIe bus controller; the detection unit comprises a PXIe oscilloscope module and a PXIe spectrum analyzer module; a PXIe case, wherein the control unit and the detection unit are installed in the PXIe case in an integrated manner; the man-machine interaction unit comprises a keyboard, a mouse and a liquid crystal display; and the interface communication unit comprises an N2843A probe and a radio frequency cable. The utility model provides a general metrological verification system for related parameters of a certain type series of direct wave signal sources and a certain type series of microwave video combinations, not only can a standard system for field metrological verification in a non-standard environment be established, but also the system adopts a modular bus technology, has the advantages of small size, portability, flexibility, convenience in operation and the like, and is suitable for popularization and application. On-site automatic metering verification can be carried out on multiple objects and multiple parameters, the testing precision is higher, and the maneuverability and timeliness are better.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave signal source metrology verification, in particular to a metrology verification system common to two types of microwave signal sources. Background Art

[0002] A certain type of direct wave signal source and a certain type of microwave video combination are microwave signal sources dedicated to equipment testing. In the prior art, the metrological verification of the above two types of microwave signal sources is generally achieved in a laboratory environment using traditional instruments. Since the equipment needs to be disassembled for inspection during metrological verification, the overall working status of the equipment cannot be obtained, resulting in one-sided verification results and affecting test accuracy. In addition, there are safety hazards in the disassembly and transportation process, which cannot meet the timeliness and mobility requirements of equipment testing. Utility Model Content

[0003] The utility model provides a universal metrological verification system for two types of microwave signal sources with high test accuracy, good timeliness and mobility, which can solve at least one of the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: a universal metrological verification system for two types of microwave signal sources, adopting a PXIe bus test system architecture, including:

[0005] A control unit, wherein the control unit is a PXIe bus controller;

[0006] A detection unit, including a PXIe oscilloscope module and a PXIe spectrum analyzer module;

[0007] A PXIe chassis, wherein the control unit and the detection unit are integrally installed in the PXIe chassis;

[0008] Human-computer interaction unit, including keyboard, mouse and LCD display;

[0009] Interface communication unit, including N2843A probe and RF cable.

[0010] Furthermore, the communication method between the various components is as follows: the control unit establishes a communication connection with the human-computer interaction unit via USB and VGA, and sends a detection instruction to the detection unit via a PCI Epress serial interface, and the detection unit establishes a communication connection with the object being detected via the interface communication unit.

[0011] Furthermore, a certain type of series of direct wave signal source output signal verification items and a certain type of series of microwave video combination output signal verification items are provided.

[0012] Furthermore, the output signal verification items of the certain type of series direct wave signal source include parameter verification of X-band signal frequency, zero-level power and attenuation working range.

[0013] Furthermore, the verification circuit of the output signal verification item of the certain type of series direct wave signal source is:

[0014] The control unit receives the instruction sent by the human-computer interaction unit through USB and VGA, reads the signal to be tested in the configuration file, sends the detection instruction to the PXIe spectrum analyzer module through the PCI Express serial interface, and sets the center frequency, frequency width, reference level, resolution bandwidth and video bandwidth parameters of the PXIe spectrum analyzer module;

[0015] The PXIe spectrum analyzer module communicates with the detected direct wave signal source through the radio frequency cable, the direct wave signal source sends a signal to the PXIe spectrum analyzer module, and the PXIe spectrum analyzer module measures the detected signal according to the detection instruction;

[0016] The control unit reads the waveform of the PXIe spectrum analyzer module, or the power values ​​of different measurement points of the tested signal measured by the PXIe spectrum analyzer module, automatically measures, records and calculates the actual measured values ​​in real time, and determines whether each output signal of the direct wave signal source meets the technical indicator requirements by comparing the test value of the PXIe spectrum analyzer module with the technical indicator value of the measured direct wave signal source.

[0017] Furthermore, the output signal verification items of a certain type of series microwave video combination include parameter verification of X-band output signal, response pulse monitoring signal, response pulse monitoring signal and address code signal.

[0018] Furthermore, the verification circuit of the certain type of series microwave video combination output signal verification item is:

[0019] The control unit receives the instruction sent by the human-computer interaction unit through USB and VGA, reads the signal to be tested in the configuration file, sends the detection instruction to the PXIe oscilloscope module through the PCI Express serial interface, and sets the impedance, vertical sensitivity, time base and trigger level parameters of the PXIe oscilloscope module channel;

[0020] The PXIe oscilloscope module communicates with the microwave video combination under test through the N2843A probe, and reads the parameters of the X-band output signal, the response pulse monitoring signal, the response power monitoring signal, the address code signal, and the instruction address signal of the microwave video combination in the working state according to the detection instruction, and performs the test;

[0021] The control unit automatically measures, records and calculates the actual measurement value in real time, and determines whether each output signal of the microwave video combination meets the technical indicator requirements by comparing the test value of the PXIe oscilloscope module with the technical indicator value of the microwave video combination under test.

[0022] The beneficial effects of the utility model are embodied in:

[0023] The utility model provides a universal metrological verification system for relevant parameters of a certain series of direct wave signal sources and a certain series of microwave video combinations. Specifically, a detection unit collects detection data of a device under test through an interface communication unit, and sends the data to a control unit for analysis and processing; the control unit sends the analyzed detection data of the device under test to a human-computer interaction unit for display, and completes parameter verification of an output signal of a certain series of direct wave signal sources and an output signal of a certain series of microwave video combinations, thereby solving the shortcomings of metrological verification schemes of two types of microwave signal sources in the prior art. Not only can a standard system for on-site metrological verification be established in a non-standard environment, but the system also adopts modular bus technology, has the advantages of being small, portable, flexible, easy to operate, etc., and can perform on-site automatic metrological verification of multiple objects and multiple parameters, with higher test accuracy, better mobility and timeliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall architecture diagram of an embodiment of the utility model.

[0025] Figure 2 The utility model is a control unit principle block diagram of the model SC57101 PXI-E controller of the embodiment of the utility model.

[0026] Figure 3 It is a schematic diagram of the overall structure of the metrological verification system of the embodiment of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] It should be noted that this application implements calibration of the microwave signal source according to the correspondence between the "source table" and the method required by the regulations, and is designed in accordance with the 1 / 10 or 1 / 3 rule. According to the "Calibrating Regulations for a Certain Type of Equipment: ×× Test Vehicle (Trial)", the calibration parameters of the series of direct wave signal sources are microwave radio frequency signals, and calibration is implemented through a spectrum analyzer; according to the "Calibrating Regulations for a Certain Type of Equipment: ×× Test System (Trial)", the calibration parameters of the series of microwave video combinations are analog signals and video signals, and calibration is implemented through an oscilloscope. Various types of measured signals are connected to the metrological calibration system through interface communication components.

[0029] See also Figure 1-Figure 3 The embodiment of the utility model provides a universal metrological verification system for two types of microwave signal sources, adopting a PXIe bus test system architecture, including:

[0030] The control unit is a PXIe bus controller, model SC57101 PXI-E controller, which communicates with the human-computer interaction unit through USB and VGA, and sends a detection instruction to the detection unit through a PCI Epress serial interface;

[0031] The detection unit, as the test core module of this metrological verification system, includes a PXIe oscilloscope module of model M9241A and a PXIe spectrum analyzer module of model M9290A, which provide measurement functions for the relevant parameters of the video signal and the RF signal respectively;

[0032] A PXIe chassis, wherein the control unit and the detection unit are integrated and installed in the PXIe chassis, wherein the PXIe chassis is an 18-slot SC57504 model, wherein the control unit and the detection unit are in the PXIe chassis, and detect the device under test according to the real-time response of the detection instruction;

[0033] A human-computer interaction unit, including a keyboard, a mouse, and a liquid crystal display, is used to receive user instructions, monitor the test process, and display test results;

[0034] Interface communication unit, including N2843A probe and RF cable.

[0035] In the utility model, the detection unit collects the detection data of the device under test through the interface communication unit and sends it to the control unit for analysis and processing. The control unit sends the analyzed detection data of the device under test to the human-computer interaction unit for display, thereby completing the parameter verification of a certain type of series direct wave signal source output signal and a certain type of series microwave video combination output signal.

[0036] Below, this metrological verification system provides detailed descriptions of the X-band signal frequency verification, zero-level power verification and attenuation working range verification of a certain series of direct wave signal sources, as well as the X-band output signal verification, response pulse monitoring signal verification, response power monitoring signal verification and address code signal verification of a certain series of microwave video combinations:

[0037] ①、Direct wave signal source X-band signal frequency verification

[0038] In this embodiment, when the X-band signal frequency is detected, the detected direct wave signal source is in working state, the detected signal is generated by the test system control, and is connected to the PXIe spectrum analyzer module of the detection unit through the RF cable.

[0039] ②. Zero-level power verification of direct wave signal source

[0040] In this embodiment, during the zero-level power detection, the direct wave signal source to be detected is in a working state, the detected signal is generated by the control of the test system, and is connected to the PXIe spectrum analyzer module of the detection unit through the RF cable.

[0041] ③、Verification of attenuation working range of direct wave signal source

[0042] In this embodiment, when the attenuation working range is tested, the direct wave signal source to be tested is in working state, the tested signal is generated by the control of the test system, and is connected to the PXIe spectrum analyzer module of the detection unit through the RF cable.

[0043] ④、Testing of X-band output signal of microwave video combination

[0044] In this embodiment, when the X-band output signal of the microwave video combination is tested, the tested microwave video combination is in a working state, and the tested signal is generated by the test system, and then connected to the PXIe oscilloscope module of the detection unit through the N2843A probe.

[0045] ⑤. Microwave video combined response pulse monitoring signal and response power monitoring signal verification

[0046] In this embodiment, when the microwave video combination response pulse monitoring signal is detected, the detected microwave video combination is in working state. After the detected signal is generated by the test system, it is connected to the PXIe oscilloscope module of the detection unit through the N2843A probe.

[0047] ⑥、Microwave video combination ×× address code signal verification

[0048] In this embodiment, when the microwave video combination ×× address code signal is tested, the tested microwave video combination is in a working state, and the tested signal is generated by the test system and then connected to the PXIe oscilloscope module of the detection unit through the N2843A probe.

[0049] ⑦. Microwave video combination instruction address signal verification

[0050] In this embodiment, when the microwave video combination instruction address signal is detected, the detected microwave video combination is in a working state, and the detected signal is generated by the test system and then connected to the PXIe oscilloscope module of the detection unit through the N2843A probe.

[0051] In summary, the utility model provides a universal metrological verification system for relevant parameters of a certain series of direct wave signal sources and a certain series of microwave video combinations. Specifically, the detection unit collects detection data of the device under test through the interface communication unit, and sends it to the control unit for analysis and processing. The control unit sends the analyzed detection data of the device under test to the human-computer interaction unit for display, thereby completing the parameter verification of the output signal of a certain series of direct wave signal sources and the output signal of a certain series of microwave video combinations, solving the shortcomings of the metrological verification schemes of two types of microwave signal sources in the prior art, not only can a standard system for on-site metrological verification be established in a non-standard environment, but the system also adopts modular bus technology, and has the advantages of being small, portable, flexible, and easy to operate, and can perform on-site automatic metrological verification of multiple objects and multiple parameters, with higher test accuracy, better mobility and timeliness.

[0052] It should be understood that the examples and implementation modes described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art may make various modifications or changes based on the examples and implementation modes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal metrological verification system for two types of microwave signal sources, characterized in that: Adopt PXIe bus test system architecture, including: A control unit, wherein the control unit is a PXIe bus controller; A detection unit, including a PXIe oscilloscope module and a PXIe spectrum analyzer module; A PXIe chassis, wherein the control unit and the detection unit are integrally installed in the PXIe chassis; Human-computer interaction unit, including keyboard, mouse and LCD display; Interface communication unit, including N2843A probe and RF cable.

2. The universal metrological verification system for two types of microwave signal sources as claimed in claim 1, characterized in that: The communication mode between each component unit is as follows: the control unit establishes a communication connection with the human-computer interaction unit through USB and VGA, and sends a detection instruction to the detection unit through the PCI Epress serial interface, and the detection unit establishes a communication connection with the object to be detected through the interface communication unit.

3. The universal metrological verification system for two types of microwave signal sources as claimed in claim 2, characterized in that: Provide a certain series of direct wave signal source output signal verification items and a certain series of microwave video combination output signal verification items.

4. The universal metrological verification system for two types of microwave signal sources as claimed in claim 3, characterized in that: The output signal verification items of a certain type of series of direct wave signal sources include parameter verification of X-band signal frequency, zero-level power and attenuation working range.

5. The metrological verification system common to two types of microwave signal sources as claimed in claim 4, characterized in that: The verification circuit of the output signal verification item of a certain type of series direct wave signal source is: The control unit receives the instruction sent by the human-computer interaction unit through USB and VGA, reads the signal to be tested in the configuration file, sends the detection instruction to the PXIe spectrum analyzer module through the PCI Express serial interface, and sets the center frequency, frequency width, reference level, resolution bandwidth and video bandwidth parameters of the PXIe spectrum analyzer module; The PXIe spectrum analyzer module communicates with the detected direct wave signal source through a radio frequency cable, the direct wave signal source sends a signal to the PXIe spectrum analyzer module, and the PXIe spectrum analyzer module measures the detected signal according to the detection instruction; The control unit reads the waveform of the PXIe spectrum analyzer module, or the power values ​​of different measurement points of the tested signal measured by the PXIe spectrum analyzer module, automatically measures, records and calculates the actual measured values ​​in real time, and determines whether each output signal of the direct wave signal source meets the technical indicator requirements by comparing the test value of the PXIe spectrum analyzer module with the technical indicator value of the measured direct wave signal source.

6. The universal metrological verification system for two types of microwave signal sources as claimed in claim 3, characterized in that: The test items of a certain type of series microwave video combination output signal include parameter test of X-band output signal, response pulse monitoring signal, response pulse monitoring signal and address code signal.

7. The metrological verification system common to two types of microwave signal sources as claimed in claim 6, characterized in that: The verification circuit of the certain type of series microwave video combination output signal verification project is: The control unit receives the instruction sent by the human-computer interaction unit through USB and VGA, reads the signal to be tested in the configuration file, sends the detection instruction to the PXIe oscilloscope module through the PCI Express serial interface, and sets the impedance, vertical sensitivity, time base and trigger level parameters of the PXIe oscilloscope module channel; The PXIe oscilloscope module communicates with the microwave video combination under test through the N2843A probe, and reads the parameters of the X-band output signal, the response pulse monitoring signal, the response power monitoring signal, the address code signal, and the instruction address signal of the microwave video combination in the working state according to the detection instruction, and performs the test; The control unit automatically measures, records and calculates the actual measurement value in real time, and determines whether each output signal of the microwave video combination meets the technical indicator requirements by comparing the test value of the PXIe oscilloscope module with the technical indicator value of the microwave video combination under test.

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