Radar digital TR assembly automatic test system

Abstract

The embodiment of the utility model discloses an automatic test system for a radar digital TR assembly. The automatic test system comprises a computer unit, a test instrument unit, an adapter unit, a controller unit and a cooling unit, gPIB interfaces of the test instrument unit, the adapter unit and the controller unit are respectively connected to one end of a GPIB bus, a GPIB board card is inserted into a mainboard of the computer unit, and a GPIB interface of the GPIB board card is in butt joint with the other end of the GPIB bus; an electromagnetic wave channel is established between the adapter unit and the tested assembly, and the test instrument unit is connected with the adapter unit through a transmission line; the controller unit controls the tested component to be in a transmitting state or a receiving state through a wave control signal; and an air outlet of the cooling unit is aligned with the tested assembly. According to the technical scheme provided by the embodiment of the utility model, the TR assembly is controlled to automatically test through the computer, and the error rate of manual test is reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the field of antenna and microwave technologies, and particularly to an automatic test system for radar digital T / R modules. Background Art

[0002] A digital array radar is an all-digital phased array radar in which both receiving and transmitting beams are implemented digitally. A digital T / R module is the core device of a digital array radar. The test fields it covers include digital intermediate frequency testing, digital signal generation, and microwave small signal testing. Its performance indicators directly affect the overall performance indicators of the radar. An important means of judging its performance indicators is to test its performance indicators.

[0003] However, the traditional methods for testing the performance of T / R modules are mostly manual operation tests. The test process is quite cumbersome and the work efficiency is low. For example, when measuring the frequency characteristics, measuring the system responses at several frequency points often requires the cooperation of multiple people, and it is easy to make mistakes during the test process. Content of the Utility Model

[0004] The embodiments of the present utility model provide an automatic test system for radar digital T / R modules to solve the problem that the manual operation test process is quite cumbersome and a large number of repeated tests are required.

[0005] The embodiments of the present utility model provide an automatic test system for radar digital T / R modules, including: a computer unit, a test instrument unit, an adapter unit, a controller unit, and a cooling unit;

[0006] The GPIB interfaces of the test instrument unit, the adapter unit, and the controller unit are respectively connected to one end of the GPIB bus. A GPIB board is inserted into the main board of the computer unit, and the GPIB interface of the GPIB board is docked with the other end of the GPIB bus;

[0007] An electromagnetic wave channel is established between the adapter unit and the component under test, and the test instrument unit is connected to the adapter unit through a transmission line;

[0008] The controller unit controls the component under test to be in a transmitting state or a receiving state through a wave control signal;

[0009] The air outlet of the cooling unit is aligned with the component under test.

[0010] The test instrument unit includes: a vector network analyzer, a spectrum analyzer, a power meter, a signal source, and an oscilloscope;

[0011] The GPIB interfaces of the vector network analyzer, the spectrum analyzer, the power meter, the signal source, and the oscilloscope are respectively connected to the GPIB bus.

[0012] The adapter unit consists of a signal output channel and a signal input channel;

[0013] The signal output channel is connected to the output end of the vector network analyzer and the signal source through a transmission line;

[0014] The signal input channel is connected to the input end of the vector network analyzer, the spectrum analyzer, the power meter, and the oscilloscope through a transmission line.

[0015] The signal output channel includes: a driver amplifier and an isolator; the signal input channel includes: an attenuator and a directional coupler;

[0016] The GPIB interfaces of the driver amplifier, the isolator, the attenuator, and the directional coupler are respectively connected to the GPIB bus;

[0017] The driver amplifier is connected to the output end of the vector network analyzer, the signal source, and the isolator through a transmission line;

[0018] The attenuator is connected to the input end of the vector network analyzer, the spectrum analyzer, and the directional coupler through a transmission line;

[0019] The directional coupler is connected to the power meter and the oscilloscope through a transmission line;

[0020] The isolator in the signal output channel and the attenuator in the signal input channel respectively establish signal connections with the component under test through the electromagnetic wave channel.

[0021] The controller unit includes: a switch controller and a beam controller, and the switch controller and the beam controller respectively establish signal connections with the component under test.

[0022] The automatic test system for the radar digital TR component further includes: a power supply unit;

[0023] One end of the power supply unit is connected to the computer unit through a GPIB cable, and the other end is connected to a power distribution device, and the power distribution device is connected to the component under test through a power connection line.

[0024] The automatic test system for the radar digital TR component further includes: a printer unit;

[0025] The printer unit is connected to the computer unit through a network cable.

[0026] In the technical solution of the embodiment of the present utility model, the computer controls the test instrument unit, the adapter unit, and the controller unit through the GPIB bus. The adapter unit establishes electromagnetic wave communication with the component under test, and the adapter unit acts as a bridge for signal transmission, realizing the test of the performance of the component under test by the test instrument unit, avoiding the problems of cumbersome manual operation in the test process and the need for repeated tests, and improving the test efficiency. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the unit connection relationship of an automatic test system for a radar digital TR module in an embodiment of the present utility model;

[0028] Figure 2 It is a schematic diagram of the connection principle of an adapter unit in an embodiment of the present utility model.

[0029] In the figure, 1 is a computer unit; 2 is a test instrument unit; 21 is a vector network analyzer; 22 is a spectrum analyzer; 23 is a power meter; 24 is a signal source; 25 is an oscilloscope; 3 is an adapter unit; 31 is a driver amplifier; 32 is an isolator; 33 is an attenuator; 34 is a directional coupler; 4 is a controller unit; 41 is a switch controller; 42 is a beam controller; 5 is a cooling unit; 6 is a power supply unit; 7 is a printer unit. Detailed Embodiment

[0030] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Figure 1 It is a schematic diagram of the unit connection relationship of an automatic test system for a radar digital TR module provided by an embodiment of the present utility model. The embodiment of the present utility model is applicable to the scenario of performance testing of digital TR modules. Referring to Figure 1 , an automatic test system for a radar digital TR module in an embodiment of the present utility model specifically includes: a computer unit 1, a test instrument unit 2, an adapter unit 3, a controller unit 4, and a cooling unit 5.

[0033] It should be noted that all kinds of instruments and components involved in the embodiments of the present utility model can use existing products on the market.

[0034] The radar digital TR module includes a transmitting part and a receiving part. The transmitting part mainly includes a driver amplifier, a high-power amplifier, etc., which are responsible for amplifying the transmitting excitation signal, and the signal is transmitted after amplification; the receiving part includes a limiter, a low-noise amplifier, an attenuator, etc. The signal received from the antenna needs to pass through the limiter, the low-noise amplifier, and the attenuator and enter the receiver, so as to realize the amplification of the signal.

[0035] The GPIB interfaces of the test instrument unit, the adapter unit, and the controller unit are respectively connected to one end of the GPIB bus. The GPIB card is inserted into the slot of the main board of the computer unit, and the GPIB interface of the GPIB card is docked with the other end of the GPIB bus.

[0036] It should be noted that the GPIB bus structure is a standard interface bus system that connects instruments with GPIB interfaces using the GPIB bus. The interface part is composed of various logic circuits, which are installed together with each instrument device and are used to send, receive, encode, and decode the transmitted information; the bus part is a passive multi-core cable used to transmit various messages.

[0037] A board card is a type of printed circuit board. When manufactured, it has a socket and can be inserted into the slot of the main circuit board of a computer to control the operation of hardware, such as devices like monitors and acquisition cards. After installing the driver program, the corresponding hardware functions can be realized.

[0038] In the embodiment of the present utility model, one end of the GPIB bus is connected to various test instruments, various adapters, and the controller, and the other end is connected to the computer. The computer controls various instruments through the GPIB bus.

[0039] Specifically, the computer unit 1 is used for the control, data acquisition, and processing of the system. By controlling the instruments, the test results are obtained, and then the quality of the component under test, as well as the fault analysis and location, are judged. Since the components under test are diverse, different test instruments are required to perform performance tests on them. The test instrument unit 2 integrates a variety of different test instruments to undertake the performance tests of the components under test. The adapter unit is the interface of the entire system and is used for the interconnection and interoperability of various signals. The test instruments in the test instrument unit 2 all need to be switched through the adapter unit 3. The controller unit 4 generates various control signals for the control of the components under test and switches.

[0040] The test instruments in the test instrument unit 2, the instruments in the adapter unit 3, and the controller unit 4 can be integrated on a three-dimensional cabinet. A workbench is provided on the three-dimensional cabinet for placing the component under test. The cooling unit 5 can be arranged at the bottom of the cabinet. The cooling unit 5 can be provided with multiple air outlets. A part of the air outlets are aligned with the component under test, and the other part of the air outlets are arranged at the bottom of the cabinet. The cold air enters the cabinet from the air outlets, not only cooling the entire cabinet, but also providing the air cooling or water cooling required when testing various types of radar digital TR components.

[0041] An electromagnetic wave channel is established between the adapter unit 3 and the component under test. The test instrument unit 2 is connected to the adapter unit 3 through a transmission line.

[0042] The test instrument unit 2 includes: a vector network analyzer 21, a spectrum analyzer 22, a power meter 23, a signal source 24, and an oscilloscope 25. The GPIB interfaces of the vector network analyzer 21, the spectrum analyzer 22, the power meter 23, the signal source 24, and the oscilloscope 25 are respectively connected to the GPIB bus.

[0043] Specifically, the vector network analyzer 21 is used to test the amplitude-phase characteristics of the digital TR component; the spectrum analyzer 22 is used to measure indicators such as signal spectrum, harmonic, and spurious suppression ratio; the power meter 23 is used for various power measurements; the signal source 24 is used to provide excitation signals and local oscillator signals; the oscilloscope 25 is used to observe signal waveforms and measure indicators such as signal time width, pulse width, and amplitude. The computer unit 1 controls these test instruments through the GPIB interface. GPIB is a general interface bus used to connect various instruments and form a medium- and small-scale automatic test system.

[0044] Figure 2 This is the connection schematic diagram of the adapter unit provided by the embodiment of the present invention. The embodiment of the present invention is applicable to the scenario of performance testing of digital TR components. Refer to Figure 2 As shown, the adapter unit 3 is composed of a signal output channel and a signal input channel. The signal output channel is connected to the output end of the vector network analyzer 21 and the signal source 24 through a transmission line. The signal input channel is connected to the input end of the vector network analyzer 21, the spectrum analyzer 22, the power meter 23, and the oscilloscope 25 through a transmission line.

[0045] The signal output channel includes: a driver amplifier 31 and an isolator 32. The signal input channel includes: an attenuator 33 and a directional coupler 34.

[0046] The GPIB interfaces of the driver amplifier 31, the isolator 32, the attenuator 33, and the directional coupler 34 are respectively connected to the GPIB bus.

[0047] The driver amplifier 31 is connected to the output end of the vector network analyzer 21, the signal source 24, and the isolator 32 through a transmission line.

[0048] The attenuator 33 is connected to the input end of the vector network analyzer 21, the spectrum analyzer 22, and the directional coupler 34 through a transmission line.

[0049] The directional coupler 34 is connected to the power meter 23, the oscilloscope 25, and the attenuator 33 through a transmission line.

[0050] The isolator 32 in the signal output channel and the attenuator 33 in the signal input channel are respectively connected to the component under test through an electromagnetic wave channel to establish a signal connection.

[0051] The automatic test system for the radar digital TR component further includes: a power supply unit 6. One end of the power supply unit 6 is connected to the computer unit 1 through a GPIB cable, and the other end is connected to a power distribution device. The power distribution device is connected to the component under test through a power connection line.

[0052] In the embodiment of the present utility model, when testing the output power and signal waveform parameters of the transmitting component, the power supply unit 6 powers on the component under test. The controller unit 4 emits a wave control signal to adjust the component under test to the transmitting state and applies a pulse signal to the component under test. The signal source 24 generates an excitation signal, which successively passes through the drive amplifier 31 and the isolator 32 and then enters the component under test. The component under test outputs the signal, which successively passes through the attenuator 33 and the directional coupler 34. The signal processed by the directional coupler 34 is sent to the power meter 23 to measure the peak power and waveform parameters of the signal, and another part is sent to the oscilloscope 25 to test the waveform parameters of the signal.

[0053] In the embodiment of the present utility model, when testing the spurious and harmonic components of the output signal of the transmitting component, the power supply unit 6 powers on the component under test. The controller unit 4 emits a wave control signal to adjust the component under test to the transmitting state and applies a timing pulse to the component under test. The signal source 24 generates an excitation signal, which successively passes through the drive amplifier 31 and the isolator 32 and then enters the component under test. The component under test outputs the signal, which passes through the attenuator 33 and is sent to the spectrum analyzer 22 to test the spurious and harmonic components of the output signal.

[0054] In the embodiment of the present utility model, when testing the phase characteristics of the transmitting component, the power supply unit 6 powers on the component under test. The controller unit 4 emits a wave control signal to adjust the component under test to the transmitting state and applies a timing pulse to the component under test. The signal source 24 generates an excitation signal, which successively passes through the drive amplifier 31 and the isolator 32 and then enters the component under test. The component under test outputs the signal, which passes through the attenuator 33 and is sent to the input end of the vector network analyzer 21 to test the phase characteristics of the component under test.

[0055] In the embodiment of the present utility model, when performing phase characteristic and standing wave tests on the receiving component, the power supply unit 6 powers on the component under test, the controller unit 4 transmits a wave control signal to adjust the component under test to the receiving state, and applies a timing pulse to the component under test; the output end of the vector network analyzer 21 outputs a signal, and after the signal is received by the component under test, it is sent to the input end of the vector network analyzer 21 to test the phase characteristic of the component under test.

[0056] In the embodiment of the present utility model, when performing noise figure and amplitude-frequency characteristic tests on the receiving component, the power supply unit 6 powers on the component under test, the controller unit 4 transmits a wave control signal to adjust the component under test to the receiving state, and applies a timing pulse to the component under test; the noise source 24 outputs a signal, and after the signal is received by the component under test, it is sent to the spectrum analyzer 22 to test the noise figure and amplitude-frequency characteristic of the component under test.

[0057] The controller unit 4 controls the component under test to be in the transmitting state or the receiving state through the wave control signal.

[0058] The controller unit 4 includes: a switch controller 41 and a beam controller 42, and the switch controller 41 and the beam controller 42 are respectively connected to the component under test to establish a signal connection.

[0059] Specifically, the switch controller 41 receives the control instruction of the computer unit 1, distributes power to the component under test, different components under test need to be configured with different power supplies, and at the same time the switch controller 41 provides the switch state to the computer unit 1 to ensure the safety of the system.

[0060] The beam controller 42 receives the control instruction of the computer unit 1, can simulate the working state of the radar, provides pulse signals, trigger signals, modulation signals, etc. for the component under test, and controls the component under test to work in states such as transmitting, receiving, phase shifting, and attenuation.

[0061] The radar digital TR module automatic test system further includes: a printer unit 7, and the printer unit 7 is connected to the computer unit 1 through a network cable and is used to print test reports.

[0062] In the technical solution of the embodiment of the present utility model, the adapter unit, as a bridge between the test instrument unit and the component under test, receives or transmits signals from the test instrument unit and the component under test, realizes various functional tests of the test instrument unit on the component under test, the controller unit performs state switching on the component under test, the cooling unit and the power supply unit provide protection and support for the system, and through computer program control of each instrument, automatic testing of the TR module is realized, solving the problem that the manual operation test process is quite cumbersome and a large number of repeated tests are required, and improving the test efficiency and accuracy.

[0063] Note that the above is only the preferred embodiment of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. An automatic test system for radar digital TR components, characterized in that Comprising: A computer unit (1), a test instrument unit (2), an adapter unit (3), a controller unit (4), and a cooling unit (5); The GPIB interfaces of the test instrument unit (2), the adapter unit (3), and the controller unit (4) are respectively connected to one end of the GPIB bus. A GPIB card is inserted into the mainboard of the computer unit (1), and the GPIB interface of the GPIB card is docked with the other end of the GPIB bus; An electromagnetic wave channel is established between the adapter unit (3) and the component under test, and the test instrument unit (2) is connected to the adapter unit (3) through a transmission line; The controller unit (4) controls the component under test to be in a transmitting state or a receiving state through a wave control signal; The air outlet of the cooling unit (5) is aligned with the component under test.

2. The automatic test system for radar digital TR components according to claim 1, characterized in that The test instrument unit (2) includes: a vector network analyzer (21), a spectrum analyzer (22), a power meter (23), a signal source (24), and an oscilloscope (25); The GPIB interfaces of the vector network analyzer (21), the spectrum analyzer (22), the power meter (23), the signal source (24), and the oscilloscope (25) are respectively connected to the GPIB bus.

3. The radar digital TR module automatic test system according to claim 2, wherein The adapter unit (3) consists of a signal output channel and a signal input channel; The signal output channel is connected to the output end of the vector network analyzer (21) and the signal source (24) through a transmission line; The signal input channel is connected to the input end of the vector network analyzer (21), the spectrum analyzer (22), the power meter (23), and the oscilloscope (25) through a transmission line.

4. The automatic test system for radar digital TR components according to claim 3, characterized in that, The signal output channel includes: a driver amplifier (31) and an isolator (32); the signal input channel includes: an attenuator (33) and a directional coupler (34); The GPIB interfaces of the driver amplifier (31), the isolator (32), the attenuator (33), and the directional coupler (34) are respectively connected to the GPIB bus; The driver amplifier (31) is connected to the output end of the vector network analyzer (21), the signal source (24), and the isolator (32) through a transmission line; The attenuator (33) is connected to the input end of the vector network analyzer (21), the spectrum analyzer (22), and the directional coupler (34) through a transmission line; The directional coupler (34) is connected to the power meter (23) and the oscilloscope (25) through a transmission line; The isolator (32) in the signal output channel and the attenuator (33) in the signal input channel are respectively connected to the component under test through the electromagnetic wave channel to establish a signal connection.

5. The automatic test system for radar digital TR modules according to claim 1, characterized in that, The controller unit (4) includes: a switch controller (41) and a beam controller (42), and the switch controller (41) and the beam controller (42) are respectively connected to the component under test to establish a signal connection.

6. The automatic test system for radar digital TR components according to claim 1, wherein Also comprising: A power supply unit (6); One end of the power supply unit (6) is connected to the computer unit (1) through a GPIB cable, and the other end is connected to a power distribution device. The power distribution device is connected to the component under test through a power connection line.

7. The automatic test system for radar digital TR components according to claim 1, wherein Also comprising: A printer unit (7); The printer unit (7) is connected to the computer unit (1) through a network cable.

Images