An automated testing system and method for the comprehensive protection performance of strong electromagnetic pulses of a protection module

Abstract

The present invention discloses an automated testing system and method for the comprehensive protection performance of strong electromagnetic pulses of a protection module. The system includes: a comprehensive generation system of strong electromagnetic pulses, an automated program control system, a function monitoring system of a protection module, and a data acquisition system; the comprehensive generation system of strong electromagnetic pulses is used to provide excitation; the automated program control system is used to control the operation of each subsystem; the function monitoring system of the protection module is used to monitor the functional status of the protection module; the data acquisition system is used to collect, store and post-process data, so as to monitor the emission excitation of the comprehensive generation system of strong electromagnetic pulses and detect residual signals, and finally obtain the protection performance index parameters of the protection module against strong electromagnetic pulses. The present invention overcomes the problems of single function and incomplete test indicators of the current test platform, and achieves the purpose of obtaining the comprehensive protection performance parameter indicators of the protection module by using one test system.

Description

Technical Field

[0001] The invention relates to the technical field of strong electromagnetic pulse protection performance testing of a protection module, and in particular to a system and method for automatic testing of strong electromagnetic pulse comprehensive protection performance of a protection module. Background Art

[0002] Nowadays, with the widespread application of electronic information technology in the military and civilian fields, the number of various electromagnetic radiators such as radar, communication systems, and navigation equipment has increased exponentially, making the complex and changeable characteristics of the electromagnetic environment in space more prominent and intense; in particular, the strong electromagnetic pulses represented by nuclear electromagnetic pulses radiated by high-altitude nuclear explosions, the high-intensity radiation environment emitted by high-power jammers, and the high-power microwaves generated by high-power microwave transmitters, can reach gigawatts or even higher, resulting in an increasing intensity of the electromagnetic environment in space, posing a great threat to the survival of various electronic systems. At the same time, the informationization and intelligence of electronic systems have been rapidly improved, and the integration has been significantly improved, resulting in reduced electromagnetic sensitivity, making them more susceptible to external electromagnetic radiation interference and electromagnetic environmental effects of varying degrees, affecting their performance and even posing a severe test to their survival. In order to ensure that electronic systems can work normally in a strong electromagnetic pulse environment, various electromagnetic protection methods have been gradually developed in recent years; among them, the use of various protection modules for electromagnetic protection on the electromagnetic energy propagation path is an important method.

[0003] As far as the actual application of protection modules is concerned, in order to ensure the survivability of electronic systems in complex electromagnetic environments, protection modules need to have protection capabilities for multiple electromagnetic environments, especially strong electromagnetic environments. In recent years, designing and developing protection modules with comprehensive protection capabilities for multiple strong electromagnetic pulses has gradually become a new development trend in the field of electromagnetic protection technology. Accurately characterizing and testing the protection performance of protection modules for different strong electromagnetic environments is of great significance for their practical application; however, according to public literature, the existing device protection performance test platform can only carry out protection performance tests for a specific electromagnetic environment, which is difficult to meet the requirements of protection performance tests for multiple electromagnetic environments, and it is even more difficult to achieve comprehensive protection performance tests for strong electromagnetic pulses of protection modules. To achieve the protection performance tests of multiple strong electromagnetic pulses of protection modules, it is necessary to test them in multiple places, involving multiple disassembly and transfer. This process will cause a lot of waste of manpower and material resources, not only low test efficiency, but also may cause damage to the test devices. In addition, the existing test platform does not integrate the means of monitoring the performance indicators of the protection module, making it difficult to achieve real-time monitoring of the device status, and there is also a low degree of automation, which is easy to introduce test errors caused by manual operation. Summary of the invention

[0004] The purpose of the present invention is to provide an automated testing system and method for the comprehensive strong electromagnetic pulse protection performance of a protection module, so as to solve the problem that the current single testing platform cannot meet the testing requirements of the protection module for multiple strong electromagnetic pulse protection performances, while improving the testing efficiency and avoiding testing errors introduced by human operation; in addition, the system is also integrated with a protection module function monitoring system, which can monitor the functional parameters of the protection module and realize rapid diagnosis of the functional status of the protection module before and after the strong electromagnetic pulse protection performance test.

[0005] The invention provides an automatic test system for the comprehensive protection performance of strong electromagnetic pulse of a protection module, comprising: a comprehensive generation system of strong electromagnetic pulse, an automatic program control system, a function monitoring system of a protection module and a data acquisition system; the comprehensive generation system of strong electromagnetic pulse comprises a nuclear electromagnetic pulse source, a HIRF conduction simulation source, a HIRF radiation simulation source and a high-power microwave source; the automatic program control system comprises a host computer, a test host and a first-level program-controlled microwave switch, a second-level program-controlled microwave switch and a third-level program-controlled microwave switch; the function monitoring system of the protection module comprises a vector network analyzer and a data judgment module; the data acquisition system comprises a virtual oscilloscope, a data acquisition card, a memory card, a front-stage current probe, a rear-stage current probe, a front-stage directional coupler and a rear-stage directional coupler; wherein the host computer communicates with the test host, and the test host communicates with the nuclear electromagnetic pulse source, the HIRF conduction simulation source, the HIRF radiation simulation source, the high-power microwave source, the first-level program-controlled microwave switch, the second-level program-controlled microwave switch, the third-level program-controlled microwave switch, the vector network analyzer, the front-stage current probe, the rear-stage current probe, the front-stage directional coupler and the rear-stage directional coupler;

[0006] The strong electromagnetic pulse comprehensive generation system is used to provide excitation for the protection module;

[0007] The automatic program control system is used to control the operation of the strong electromagnetic pulse comprehensive generation system, the protection module function monitoring system and the data acquisition system, as well as the switching and conduction of different test channels;

[0008] The protection module function monitoring system is used to monitor the functional status of the protection module. When the data judgment module detects that the change of the functional status of the protection module exceeds the preset range, a warning is issued and the detection is stopped;

[0009] The data acquisition system is used for data acquisition, storage and post-processing, to monitor the emission excitation of the strong electromagnetic pulse comprehensive generation system and detect the residual signal, and finally obtain the protection performance index parameters of the protection module against strong electromagnetic pulses.

[0010] Further, the test channel includes a low-frequency test channel and a high-frequency test channel;

[0011] The low-frequency test channel is: a nuclear electromagnetic pulse source and a HIRF conduction simulation source are sequentially connected to a first-stage programmable microwave switch, a front-stage current probe, a second-stage programmable microwave switch, a protection module, a third-stage programmable microwave switch, a rear-stage current probe and a dummy load and then grounded;

[0012] The high-frequency test channel is: a HIRF radiation simulation source and a high-power microwave source are sequentially connected to a first-stage programmable microwave switch, a front-stage directional coupler, a second-stage programmable microwave switch, a protection module, a third-stage programmable microwave switch, a rear-stage directional coupler and an absorption load.

[0013] Furthermore, the strong electromagnetic pulse comprehensive generation system also includes an antenna; the antenna includes a HIRF transmitting antenna, a high-power microwave transmitting antenna, a HIRF receiving antenna and a high-power microwave receiving antenna; the HIRF radiation simulation source and the high-power microwave source generate excitation in a "transmit-receive-inject" manner; the HIRF transmitting antenna is connected to the HIRF radiation simulation source, and the HIRF receiving antenna is placed aligned with the HIRF transmitting antenna to obtain excitation; the high-power microwave transmitting antenna is connected to the high-power microwave source, and the high-power microwave receiving antenna is placed aligned with the high-power microwave transmitting antenna to obtain excitation.

[0014] Furthermore, the antenna is placed in a microwave darkroom, which is provided with a 1# microwave darkroom transfer hole, a 2# microwave darkroom transfer hole and a 3# microwave darkroom transfer hole; wherein the HIRF receiving antenna and the high-power microwave receiving antenna are connected to a first-level programmable microwave switch through the 1# microwave darkroom transfer hole; the HIRF transmitting antenna is connected to a HIRF radiation simulation source through the 2# microwave darkroom transfer hole; and the high-power microwave transmitting antenna is connected to a high-power microwave source through the 3# microwave darkroom transfer hole.

[0015] Further, the first-level programmable microwave switch is a double-pole six-throw switch; wherein pin ① and pin ② of the first-level programmable microwave switch are respectively used for connecting a high-frequency test channel and a low-frequency test channel, and at the same time, the first-level programmable microwave switch is set to an open circuit state of the high-frequency test channel and the low-frequency test channel by connecting pin ① to pin ③ and pin ② to pin ⑧; the HIRF receiving antenna is connected to pin ④ of the first-level programmable microwave switch; the high-power microwave receiving antenna is connected to pin ⑤ of the first-level programmable microwave switch; the HIRF conduction simulation source is connected to pin ⑥ of the first-level programmable microwave switch; and the nuclear electromagnetic pulse source is connected to pin ⑦ of the first-level programmable microwave switch.

[0016] Further, the two-stage programmable microwave switch and the three-stage programmable microwave switch are both single-pole four-throw switches; the two-stage programmable microwave switch and the three-stage programmable microwave switch are both set to an open circuit state of a low-frequency test channel and a high-frequency test channel by connecting pin ① to pin ②;

[0017] The connection relationship of the low-frequency test channel is as follows: pin ② of the first-level programmable microwave switch and pin ⑤ of the second-level programmable microwave switch are connected by a first high-voltage cable, and a front-stage current probe is connected to the first high-voltage cable, pin ① of the second-level programmable microwave switch is connected to pin ① of the third-level programmable microwave switch via a protection module, pin ⑤ of the third-level programmable microwave switch is connected to a dummy load by a second high-voltage cable and then grounded, and a rear-stage current probe is connected to the second high-voltage cable;

[0018] The connection relationship of the high-frequency test channel is as follows: pin ① of the first-level programmable microwave switch is connected to pin ④ of the second-level programmable microwave switch via a front-stage directional coupler, pin ① of the second-level programmable microwave switch is connected to pin ① of the third-level programmable microwave switch via a protection module, and pin ④ of the third-level programmable microwave switch is connected to an absorption load via a rear-stage directional coupler.

[0019] Furthermore, the test channel also includes a transmission characteristics test channel; the transmission characteristics test channel is: a signal transmitting end of a vector network analyzer, a second-level programmable microwave switch, a protection module, a third-level programmable microwave switch and a signal receiving end of a vector network analyzer connected in sequence; wherein the signal transmitting end of the vector network analyzer is connected to pin No. ③ of the second-level programmable microwave switch, and the signal receiving end of the vector network analyzer is connected to pin No. ③ of the third-level programmable microwave switch.

[0020] Furthermore, a front-stage current probe attenuator is connected between the front-stage current probe and the test host; a rear-stage current probe attenuator is connected between the rear-stage current probe and the test host; a front-stage directional coupler attenuator is connected between the front-stage directional coupler and the test host; and a rear-stage directional coupler attenuator is connected between the rear-stage directional coupler and the test host.

[0021] The present invention also provides an automated testing method for the strong electromagnetic pulse comprehensive protection performance of a protection module, comprising the following steps:

[0022] Step 1, complete the test preparation work: determine the strong electromagnetic pulse source required for the test, preset the maximum allowable range of the transmission characteristic change of the protection module, input the preset value into the data judgment module, and install the protection module;

[0023] Step 2: Switch the test channel through the host computer to test the transmission characteristics of the protection module and obtain the initial data of the transmission characteristics of the protection module;

[0024] Step 3: Switch the test channel through the host computer, use the low-frequency test channel or the high-frequency test channel to test the protection performance of the protection module against strong electromagnetic pulses, and obtain the protection performance index parameters of the protection module against strong electromagnetic pulse sources tested using the low-frequency test channel or the high-frequency test channel;

[0025] Step 4: Switch the test channel through the host computer to detect the functional status of the protection module to determine the effectiveness of the protection performance index parameters of the protection module against strong electromagnetic pulses obtained by using the low-frequency test channel or the high-frequency test channel;

[0026] Step 5: Change the output of the strong electromagnetic pulse source through the host computer, and repeat steps 3 and 4 until the protection performance test of the protection module against strong electromagnetic pulses is completed using the low-frequency test channel or the high-frequency test channel.

[0027] Furthermore, the response time of the data acquisition card in the test host is shorter than the rising edge time of the excitation signal, and the sampling bandwidth is larger than the bandwidth of the excitation signal.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. The system of the present invention has the ability to test the comprehensive protection performance of the protection module under strong electromagnetic pulses. By changing the conduction state of the microwave switch through program control, the protection performance of the protection module under strong electromagnetic pulse environments such as nuclear electromagnetic pulses, HIRF, and high-power microwaves can be tested. This overcomes the problems of the current test platform with single functions and incomplete test indicators, and achieves the purpose of obtaining the comprehensive protection performance parameter indicators of the protection module using one test system.

[0030] 2. The system of the present invention can realize flexible switching between the strong electromagnetic pulse protection performance test path and the transmission characteristic test path of the protection module through program control. The virtual oscilloscope post-processes the test results to obtain the strong electromagnetic pulse comprehensive protection performance of the protection module; the system has a high degree of automation, which can reduce errors introduced by manual operation and significantly improve test efficiency and test accuracy.

[0031] 3. The system of the present invention has the ability to monitor the functional status of the protection module. The protection module transmission characteristic test is completed through the host computer program-controlled vector network analyzer. Combined with the judgment function of the data judgment module, the functional status of the protection module can be monitored, and invalid strong electromagnetic pulse protection performance test data can be accurately eliminated.

[0032] 4. The system of the present invention can not only meet the requirements of comprehensive protection performance testing of protection modules, but also can be used for experimental research on the effects of strong electromagnetic pulse protection modules, so as to obtain the effect laws and mechanisms of protection modules under different strong electromagnetic pulse conditions, and also has a positive promoting effect on the research and development of new strong electromagnetic pulse protection modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic diagram of the automatic testing system for the strong electromagnetic pulse comprehensive protection performance of the protection module of the present invention.

[0035] Figure 2 It is a structural schematic diagram of a first-level program-controlled microwave switch of the present invention.

[0036] Figure 3 It is a schematic diagram of the structure of the two-stage program-controlled microwave switch of the present invention.

[0037] Figure 4 It is a schematic structural diagram of the three-stage program-controlled microwave switch of the present invention.

[0038] Figure markings: 1-protection module, 2-nuclear electromagnetic pulse source, 3-HIRF conduction simulation source, 4-HIRF radiation simulation source, 5-high power microwave source, 6-host computer, 7-test host, 8-first-level programmable microwave switch, 9-second-level programmable microwave switch, 10-third-level programmable microwave switch, 11-vector network analyzer, 12-front-stage directional coupler, 13-rear-stage directional coupler, 14-front-stage current probe, 15-rear-stage current probe, 16-front-stage directional coupler attenuator, 17-rear-stage directional coupler attenuator, 18-front-stage current probe attenuator, 19-rear-stage current probe attenuator, 20-absorption load, 21-dummy load, 22-HIRF transmitting antenna, 23-high power microwave transmitting antenna, 24-HIRF receiving antenna, 25-high power microwave receiving antenna, 26-1# microwave darkroom adapter hole, 27-2# microwave darkroom adapter hole, 28-3# microwave darkroom adapter hole. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0040] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0041] like Figure 1 As shown, the present embodiment provides an automatic test system for the strong electromagnetic pulse comprehensive protection performance of a protection module 1, comprising: a strong electromagnetic pulse comprehensive generation system, an automatic program control system, a protection module 1 function monitoring system and a data acquisition system; the strong electromagnetic pulse comprehensive generation system comprises a nuclear electromagnetic pulse source 2, a HIRF (high intensity radiation field) conduction simulation source 3, a HIRF radiation simulation source 4 and a high power microwave source 5; the automatic program control system comprises a host computer 6, a test host 7 and a first-level program-controlled microwave switch 8, a second-level program-controlled microwave switch 9 and a third-level program-controlled microwave switch 10; the protection module 1 function monitoring system comprises a vector network analyzer 11 and a data judgment module; the data acquisition system comprises a virtual A virtual oscilloscope, a data acquisition card, a memory card, a front-stage current probe 14, a rear-stage current probe 15, a front-stage directional coupler 12 and a rear-stage directional coupler 13; wherein, the host computer 6 communicates with the test host 7, and the test host 7 communicates with the nuclear electromagnetic pulse source 2, the HIRF conduction simulation source 3, the HIRF radiation simulation source 4, the high-power microwave source 5, the first-level programmable microwave switch 8, the second-level programmable microwave switch 9, the third-level programmable microwave switch 10, the vector network analyzer 11, the front-stage current probe 14, the rear-stage current probe 15, the front-stage directional coupler 12, and the rear-stage directional coupler 13; generally, the data acquisition card and the memory card are integrated in the test host 7, and the virtual oscilloscope is arranged in the host computer 6;

[0042] The strong electromagnetic pulse comprehensive generation system is used to provide excitation for the protection module 1;

[0043] The automated program control system is used to control the operation of the strong electromagnetic pulse integrated generation system, the protection module 1 function monitoring system and the data acquisition system, as well as the switching and conduction of different test channels. The program control can be achieved by setting the control software in the host computer.

[0044] The protection module 1 function monitoring system is used to monitor the functional status of the protection module 1. When the data judgment module detects that the change of the functional status of the protection module 1 exceeds the preset range, a warning is issued and the detection is stopped;

[0045] The data acquisition system is used for data acquisition, storage and post-processing, to monitor the emission excitation of the strong electromagnetic pulse comprehensive generation system and detect the residual signal, and finally obtain the protection performance index parameters of the protection module 1 against the strong electromagnetic pulse source.

[0046] In the strong electromagnetic pulse comprehensive protection performance automatic test system of the protection module 1, in order to enable multiple excitation sources with obvious characteristic differences to be effectively transmitted in the test channel, the test channel includes a low-frequency test channel and a high-frequency test channel;

[0047] The low-frequency test channel is: a nuclear electromagnetic pulse source 2 and a HIRF conduction simulation source 3 are connected in sequence to a first-stage programmable microwave switch 8, a front-stage current probe 14, a second-stage programmable microwave switch 9, a protection module 1, a third-stage programmable microwave switch 10, a rear-stage current probe 15 and a dummy load 21 and then grounded;

[0048] The high-frequency test channel is: a HIRF radiation simulation source 4 and a high-power microwave source 5 are sequentially connected to a first-stage programmable microwave switch 8, a front-stage directional coupler 12, a second-stage programmable microwave switch 9, a protection module 1, a third-stage programmable microwave switch 10, a rear-stage directional coupler 13 and an absorption load 20.

[0049] Among them, the strong electromagnetic pulse comprehensive generation system also includes an antenna; the antenna includes a HIRF transmitting antenna 22, a high-power microwave transmitting antenna 23, a HIRF receiving antenna 24 and a high-power microwave receiving antenna 25; the HIRF radiation simulation source 4 and the high-power microwave source 5 use a "transmit-receive-inject" method to generate excitation; the HIRF transmitting antenna 22 is connected to the HIRF radiation simulation source 4, and the HIRF receiving antenna 24 is placed at the HIRF transmitting antenna 22 to obtain excitation; the high-power microwave transmitting antenna 23 is connected to the high-power microwave source 5, and the high-power microwave receiving antenna 25 is placed at the high-power microwave transmitting antenna 23 to obtain excitation.

[0050] In order to prevent the electromagnetic signals emitted by the HIRF radiation simulation source 4 and the high-power microwave source 5 from affecting personnel and the surrounding electromagnetic environment, the antenna is placed in a microwave darkroom, and the microwave darkroom is provided with a 1# microwave darkroom transfer hole 26, a 2# microwave darkroom transfer hole 27 and a 3# microwave darkroom transfer hole 28; wherein the HIRF receiving antenna 24 and the high-power microwave receiving antenna 25 pass through the 1# microwave darkroom transfer hole 26 to connect to the first-level programmable microwave switch 8; the HIRF transmitting antenna 22 passes through the 2# microwave darkroom transfer hole 27 to connect to the HIRF radiation simulation source 4; and the high-power microwave transmitting antenna 23 passes through the 3# microwave darkroom transfer hole 28 to connect to the high-power microwave source 5.

[0051] like Figure 2 As shown, the first-level programmable microwave switch 8 is a double-pole six-throw switch; wherein, pin ① and pin ② of the first-level programmable microwave switch 8 are respectively used for connecting the high-frequency test channel and the low-frequency test channel, and at the same time, the first-level programmable microwave switch 8 is set to the open circuit state of the high-frequency test channel and the low-frequency test channel by connecting pin ① to pin ③ and pin ② to pin ⑧ to prevent misoperation; the HIRF receiving antenna 24 is connected to pin ④ of the first-level programmable microwave switch 8; the high-power microwave receiving antenna 25 is connected to pin ⑤ of the first-level programmable microwave switch 8; the HIRF conduction simulation source 3 is connected to pin ⑥ of the first-level programmable microwave switch 8; the nuclear electromagnetic pulse source 2 is connected to pin ⑦ of the first-level programmable microwave switch 8.

[0052] like Figure 3 and 4 As shown, the two-stage programmable microwave switch 9 and the three-stage programmable microwave switch 10 are both single-pole four-throw switches; the two-stage programmable microwave switch 9 and the three-stage programmable microwave switch 10 are both set to the open circuit state of the low-frequency test channel and the high-frequency test channel by connecting the pin ① to the pin ② to prevent misoperation;

[0053] The connection relationship of the low-frequency test channel is as follows: Pin ② of the first-level programmable microwave switch 8 and Pin ⑤ of the second-level programmable microwave switch 9 are connected by a first high-voltage cable, and a front-stage current probe 14 is connected to the first high-voltage cable, Pin ① of the second-level programmable microwave switch 9 is connected to Pin ① of the third-level programmable microwave switch 10 via a protection module 1, Pin ⑤ of the third-level programmable microwave switch 10 is connected to a dummy load 21 by a second high-voltage cable and then grounded, and a rear-stage current probe 15 is connected to the second high-voltage cable. When in use, the method of connecting the low-frequency test channel is as follows: through the program control of the host computer 6, Pin ① and Pin ⑤ of the second-level programmable microwave switch 9 are connected, and Pin ① and Pin ⑤ of the third-level programmable microwave switch 10 are connected;

[0054] The connection relationship of the high-frequency test channel is as follows: the pin ① of the first-level program-controlled microwave switch 8 is connected to the pin ④ of the second-level program-controlled microwave switch 9 via the front-stage directional coupler 12, the pin ① of the second-level program-controlled microwave switch 9 is connected to the pin ① of the third-level program-controlled microwave switch 10 via the protection module 1, and the pin ④ of the third-level program-controlled microwave switch 10 is connected to the absorption load 20 via the rear-stage directional coupler 13. When in use, the method of connecting the high-frequency test channel is as follows: through the program control of the host computer 6, the pin ① and the pin ④ of the second-level program-controlled microwave switch 9 are connected, and the pin ① and the pin ④ of the third-level program-controlled microwave switch 10 are connected.

[0055] Since in the strong electromagnetic pulse comprehensive protection performance automated test system of the protection module 1, the host computer 6 and the test host 7 communicate, and the test host 7 and the nuclear electromagnetic pulse source 2, the HIRF conduction simulation source 3, the HIRF radiation simulation source 4, the high-power microwave source 5, the first-level programmable microwave switch 8, the second-level programmable microwave switch 9, the third-level programmable microwave switch 10, the vector network analyzer 11, the front-stage current probe 14, the rear-stage current probe 15, the front-stage directional coupler 12, and the rear-stage directional coupler 13 communicate with each other; the automated program control system can be used to control each subsystem: through the program control of the host computer 6, the nuclear electromagnetic pulse source 2, the HIRF conduction simulation source 3, the HIRF radiation simulation source 4, the high-power microwave source 5, the first-level programmable microwave switch 8, the second-level programmable microwave switch 9, the third-level programmable microwave switch 10, the vector network analyzer 11, the front-stage current probe 14, the rear-stage current probe 15, the front-stage directional coupler 12, and the rear-stage directional coupler 13 can be controlled. The invention can realize the operation control of the radiation simulation source 4 and the high-power microwave source 5, the transmission power adjustment and the like; realize the change of the connection status of the first-level programmable microwave switch 8, the second-level programmable microwave switch 9, and the third-level programmable microwave switch 10, and complete the switching and conduction of different test channels, such as: the switching and conduction of the nuclear electromagnetic pulse source 2, the HIRF conduction simulation source 3 and the low-frequency test channel, the switching and conduction of the HIRF radiation simulation source 4, the high-power microwave source 5 and the high-frequency test channel, etc.; realize the monitoring of the functional status of the protection module 1 by the vector network analyzer 11 in the function monitoring system of the protection module 1; realize the real-time acquisition of the data measured by the front-stage current probe 14, the rear-stage current probe 15 and the front-stage directional coupler 12, and the rear-stage directional coupler 13 by the data acquisition system.

[0056] In the above technical solution, the functional status of the protection module 1 can be monitored in real time, and the transmission characteristics (S 21) is realized by the change of the strong electromagnetic pulse comprehensive protection performance automatic test system of the protection module 1. Therefore, the transmission characteristic test and the strong electromagnetic pulse protection performance test are quite different, so the test channel also includes a transmission characteristic test channel; the transmission characteristic test channel is: the signal transmitting end of the vector network analyzer 11, the second-level program-controlled microwave switch 9, the protection module 1, the third-level program-controlled microwave switch 10 and the signal receiving end of the vector network analyzer 11 connected in sequence; wherein, the signal transmitting end of the vector network analyzer 11 is connected to the pin ③ of the second-level program-controlled microwave switch 9, and the signal receiving end of the vector network analyzer 11 is connected to the pin ③ of the third-level program-controlled microwave switch 10. Through the program control of the upper computer 6, pin ① and pin ③ of the second-level programmable microwave switch 9 are connected, and pin ① and pin ③ of the third-level programmable microwave switch 10 are connected, so that the transmission characteristic test channel is turned on, and the vector network analyzer 11, such as Agilent E5071C, starts to test the transmission characteristics of the protection module 1, and automatically sends the obtained transmission characteristic data of the protection module 1 to the data judgment module. According to the judgment criteria pre-set by the data judgment module, the functional status of the protection module 1 and whether it is damaged in the strong electromagnetic pulse comprehensive protection performance test are determined.

[0057] In the above technical solution, the data acquisition system uses a front-stage current probe 14, a rear-stage current probe 15, a front-stage directional coupler 12 and a rear-stage directional coupler 13 as a means of acquiring the test data of the strong electromagnetic pulse comprehensive protection performance of the protection module 1. The low-frequency test channel uses a front-stage current probe 14, such as Pearson 6600C, to detect the excitation signal, and uses a rear-stage current probe 15, such as Pearson 8585C, to detect the residual signal after the excitation signal passes through the protection module 1; similarly, the high-frequency test channel uses a front-stage directional coupler 12, such as DTO-L-1410A, to detect the excitation signal, and uses a rear-stage directional coupler 13, such as DTO-400 / 2700-40H, to detect the residual signal after the excitation signal passes through the protection module 1. Through the program control of the host computer 6, the data acquisition card in the test host 7 obtains the test data, and feeds the test data back to the virtual oscilloscope in the host computer 6. The virtual oscilloscope is used to perform waveform restoration, drawing, display and other data post-processing on the test data to obtain the comprehensive protection performance index parameters of the protection module 1 against strong electromagnetic pulses.

[0058] Furthermore, in order to ensure that the data acquisition card in the test host 7 is not damaged by the strong electromagnetic pulse, a front-stage current probe attenuator 18, such as DTS150-40-1, is connected between the front-stage current probe 14 and the test host 7; a rear-stage current probe attenuator 19, such as DTS50-40-1-A, is connected between the rear-stage current probe 15 and the test host 7; a front-stage directional coupler attenuator 16, such as DTS150-40-2, is connected between the front-stage directional coupler 12 and the test host 7; and a rear-stage directional coupler attenuator 17, such as DTS50-40-2-A, is connected between the rear-stage directional coupler 13 and the test host 7.

[0059] Based on the above-mentioned protection module 1 strong electromagnetic pulse comprehensive protection performance automatic test system, the protection module 1 strong electromagnetic pulse comprehensive protection performance automatic test can be realized. The following describes in detail the process of using the protection module 1 strong electromagnetic pulse comprehensive protection performance automatic test system to test the protection module 1, such as the power pulse suppressor, for the protection performance index parameters of nuclear electromagnetic pulses and high-power microwaves, and explains the protection module 1 strong electromagnetic pulse comprehensive protection performance automatic test method of the present invention:

[0060] First, the response time of the data acquisition card in the test host 7 is set to be less than the rising edge time of the excitation signal, and the sampling bandwidth is greater than the excitation signal bandwidth, so that the data sampling of the excitation signal and the residual signal after passing through the protection module 1 can be realized. The automatic test method for the strong electromagnetic pulse comprehensive protection performance of the protection module 1 includes the following steps:

[0061] S1, complete the test preparation work: determine that the strong electromagnetic pulse source to be tested is a nuclear electromagnetic pulse and a high-power microwave, preset the maximum allowable range of the transmission characteristic change of the protection module 1, such as 5%, input the preset value into the data judgment module, and install the protection module 1;

[0062] S2, switch the test channel through the host computer 6, perform the transmission characteristic test of the protection module 1, and obtain the initial data of the transmission characteristic of the protection module 1:

[0063] (1) The host computer 6 issues a transmission characteristic test channel connection instruction, and the test host 7 interprets the transmission characteristic test channel connection instruction, controls the connection between pins ① and ③ of the secondary programmable microwave switch 9, and the connection between pins ① and ③ of the tertiary programmable microwave switch 10, so that the transmission characteristic test channel of the protection module 1 is turned on;

[0064] (2) The host computer 6 issues a transmission characteristic test instruction, the test host 7 parses the transmission characteristic test instruction, controls the vector network analyzer 11 to test the transmission characteristic of the protection module 1, and feeds the test data back to the data judgment module as the initial data of the transmission characteristic of the protection module 1 and saves it;

[0065] S3, switch the test channel through the host computer 6, use the low-frequency test channel to test the protection performance of the protection module 1 against nuclear electromagnetic pulses, and obtain the protection performance index parameters of the protection module 1 against nuclear electromagnetic pulses tested using the low-frequency test channel:

[0066] (1) The host computer 6 issues a command to connect the nuclear electromagnetic pulse source 2 to the low-frequency channel, and the test host 7 interprets the command to connect the nuclear electromagnetic pulse source 2 to the low-frequency channel, controls the connection of pins ② and ⑦ of the first-level programmable microwave switch 8, the connection of pins ① and ⑤ of the second-level programmable microwave switch 9, and the connection of pins ① and ⑤ of the third-level programmable microwave switch 10, so that the low-frequency test channel and the nuclear electromagnetic pulse source 2 are connected;

[0067] (2) The host computer 6 issues an action instruction to the nuclear electromagnetic pulse source 2, and the nuclear electromagnetic pulse source 2 starts to emit excitation, such as outputting a double exponential pulse with a peak voltage of 50 kV; at the same time, the data acquisition system starts to work, and detects the current waveform actually injected into the protection module 1 through the front-stage current probe 14, and detects the residual current waveform after passing through the protection module 1 through the rear-stage current probe 15; the current waveform actually injected into the protection module 1 and the residual current waveform after passing through the protection module 1 are post-processed by the virtual oscilloscope in the host computer 6 to obtain the protection performance index parameters of the protection module 1 against nuclear electromagnetic pulses tested using the low-frequency test channel this time;

[0068] S4, switching the test channel through the host computer 6 to detect the functional status of the protection module 1 to determine the effectiveness of the protection performance index parameters of the protection module 1 against nuclear electromagnetic pulses obtained by using the low-frequency test channel:

[0069] (1) The host computer 6 issues a transmission characteristic channel connection instruction, and the test host 7 interprets the transmission characteristic test channel connection instruction, controls the connection between pins ① and ③ of the secondary programmable microwave switch 9, and the connection between pins ① and ③ of the tertiary programmable microwave switch 10, so that the transmission characteristic test channel of the protection module 1 is turned on;

[0070] (2) The host computer 6 issues a transmission characteristic test instruction, the test host 7 interprets the transmission characteristic test instruction, controls the vector network analyzer 11 to test the transmission characteristic of the protection module 1, and feeds back the test data to the data judgment module. The data judgment module compares the transmission characteristic data of this test with the initial data to determine whether the change exceeds a preset value (5%), thereby determining the effectiveness of the protection performance index parameters of the protection module 1 against nuclear electromagnetic pulses using the low-frequency test channel this time;

[0071] S5, change the output of the nuclear electromagnetic pulse source 2 through the host computer 6, and repeat steps S3 to S4 until the protection performance test of the protection module 1 against the nuclear electromagnetic pulse is completed using the low-frequency test channel; during the test, if the protection module 1 is damaged, the test is stopped. In particular, each nuclear electromagnetic pulse test requires the use of the protection module 1 function monitoring system to determine the validity of the test data to ensure that the test data is valid and accurate;

[0072] S6, switch the test channel through the host computer 6, use the high-frequency test channel to test the protection performance of the protection module 1 against high-power microwaves, and obtain the protection performance index parameters of the protection module 1 against high-power microwaves tested using the high-frequency test channel:

[0073] (1) The host computer 6 issues an instruction to connect the high-power microwave source 5 to the high-frequency test channel, and the test host 7 interprets the instruction to connect the high-power microwave source 5 to the high-frequency test channel, controls the connection of pins ① and ⑤ of the first-level program-controlled microwave switch 8, the connection of pins ① and ④ of the second-level program-controlled microwave switch 9, and the connection of pins ① and ④ of the third-level program-controlled microwave switch 10, so that the high-power microwave source 5 is connected to the high-frequency test channel;

[0074] (2) The host computer 6 issues an action instruction to the high-power microwave source 5, and the high-power microwave source 5 starts to emit excitation, such as outputting high-power microwaves with a center frequency of 1.35 GHz, a pulse width of 100 ns, and a peak power of 60 dBm; at the same time, the data acquisition system starts to work, and detects the signal actually injected into the protection module 1 through the front-stage directional coupler 12, and detects the residual signal after passing through the protection module 1 through the rear-stage directional coupler 13; the signal actually injected into the protection module 1 and the residual signal after passing through the protection module 1 are post-processed by the virtual oscilloscope in the host computer 6 to obtain the protection performance index parameters of the protection module 1 against high-power microwaves using the high-frequency test channel this time;

[0075] S7, switching the test channel through the host computer 6, detecting the functional state of the protection module 1, so as to determine the effectiveness of the protection performance index parameters of the protection module 1 against high-power microwaves obtained by using the high-frequency test channel:

[0076] (1) The host computer 6 issues a transmission characteristic channel connection instruction, and the test host 7 interprets the transmission characteristic test channel connection instruction, controls the connection between pins ① and ③ of the secondary programmable microwave switch 9, and the connection between pins ① and ③ of the tertiary programmable microwave switch 10, so that the transmission characteristic test channel of the protection module 1 is turned on;

[0077] (2) The host computer 6 issues a transmission characteristic test instruction, the test host 7 parses the transmission characteristic test instruction, controls the vector network analyzer 11 to test the transmission characteristic of the protection module 1, and feeds back the test data to the data judgment module. The data judgment module compares the transmission characteristic data of this test with the initial data to determine whether the change exceeds a preset value (5%), thereby determining the effectiveness of the protection performance index parameters of the protection module 1 against high-power microwaves using the high-frequency test channel this time;

[0078] S8, the output of the high-power microwave source 5 is changed by program control of the host computer 6, and steps S6 to S7 are repeated until the high-frequency test channel is used to test the protection performance of the protection module 1 against high-power microwaves; during the test, if the protection module 1 is damaged, the test is stopped. In particular, each high-power microwave test requires the use of the protection module 1 function monitoring system to determine the validity of the test data to ensure that the test data is valid and accurate.

[0079] From the above content, it can be seen that the beneficial effects of the present invention are as follows:

[0080] 1. The system of the present invention has the ability to test the comprehensive protection performance of the protection module under strong electromagnetic pulses. By changing the conduction state of the microwave switch through program control, the protection performance of the protection module under strong electromagnetic pulse environments such as nuclear electromagnetic pulses, HIRF, and high-power microwaves can be tested. This overcomes the problems of the current test platform with single functions and incomplete test indicators, and achieves the purpose of obtaining the comprehensive protection performance parameter indicators of the protection module using one test system.

[0081] 2. The system of the present invention can realize flexible switching between the strong electromagnetic pulse protection performance test path and the transmission characteristic test path of the protection module through program control. The virtual oscilloscope post-processes the test results to obtain the strong electromagnetic pulse comprehensive protection performance of the protection module; the system has a high degree of automation, which can reduce errors introduced by manual operation and significantly improve test efficiency and test accuracy.

[0082] 3. The system of the present invention has the ability to monitor the functional status of the protection module. The protection module transmission characteristic test is completed through the host computer program-controlled vector network analyzer. Combined with the judgment function of the data judgment module, the functional status of the protection module can be monitored, and invalid strong electromagnetic pulse protection performance test data can be accurately eliminated.

[0083] 4. The system of the present invention can not only meet the requirements of comprehensive protection performance testing of protection modules, but also can be used for experimental research on the effects of strong electromagnetic pulse protection modules, so as to obtain the effect laws and mechanisms of protection modules under different strong electromagnetic pulse conditions, and also has a positive promoting effect on the research and development of new strong electromagnetic pulse protection modules.

[0084] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic testing system for the comprehensive protection performance of strong electromagnetic pulse of protection module, characterized in that: include: Strong electromagnetic pulse comprehensive generation system, automated program control system, protection module function monitoring system and data acquisition system; The strong electromagnetic pulse comprehensive generation system includes a nuclear electromagnetic pulse source, a HIRF conduction simulation source, a HIRF radiation simulation source and a high-power microwave source; the automatic program control system includes a host computer, a test host and a first-level program-controlled microwave switch, a second-level program-controlled microwave switch and a third-level program-controlled microwave switch; the protection module function monitoring system includes a vector network analyzer and a data judgment module; the data acquisition system includes a virtual oscilloscope, a data acquisition card, a memory card, a front-stage current probe, a rear-stage current probe, a front-stage directional coupler and a rear-stage directional coupler; wherein the host computer communicates with the test host, and the test host communicates with the nuclear electromagnetic pulse source, the HIRF conduction simulation source, the HIRF radiation simulation source, the high-power microwave source, the first-level program-controlled microwave switch, the second-level program-controlled microwave switch, the third-level program-controlled microwave switch, the vector network analyzer, the front-stage current probe, the rear-stage current probe, the front-stage directional coupler and the rear-stage directional coupler; The strong electromagnetic pulse comprehensive generation system is used to provide excitation for the protection module; The automatic program control system is used to control the operation of the strong electromagnetic pulse comprehensive generation system, the protection module function monitoring system and the data acquisition system, as well as the switching and conduction of different test channels; The protection module function monitoring system is used to monitor the functional status of the protection module. When the data judgment module detects that the change of the functional status of the protection module exceeds the preset range, a warning is issued and the detection is stopped; The data acquisition system is used for data acquisition, storage and post-processing, to monitor the emission excitation of the strong electromagnetic pulse comprehensive generation system and detect the residual signal, and finally obtain the protection performance index parameters of the protection module against strong electromagnetic pulses; The test channel includes a low-frequency test channel and a high-frequency test channel; The low-frequency test channel is: a nuclear electromagnetic pulse source and a HIRF conduction simulation source are sequentially connected to a first-stage programmable microwave switch, a front-stage current probe, a second-stage programmable microwave switch, a protection module, a third-stage programmable microwave switch, a rear-stage current probe and a dummy load and then grounded; The high-frequency test channel is: a HIRF radiation simulation source and a high-power microwave source are sequentially connected to a first-stage programmable microwave switch, a front-stage directional coupler, a second-stage programmable microwave switch, a protection module, a third-stage programmable microwave switch, a rear-stage directional coupler and an absorption load; The strong electromagnetic pulse comprehensive generation system also includes an antenna; the antenna includes a HIRF transmitting antenna, a high-power microwave transmitting antenna, a HIRF receiving antenna and a high-power microwave receiving antenna; the HIRF radiation simulation source and the high-power microwave source generate excitation in a transmit-receive-injection manner; the HIRF transmitting antenna is connected to the HIRF radiation simulation source, and the HIRF receiving antenna is placed in alignment with the HIRF transmitting antenna to obtain excitation; the high-power microwave transmitting antenna is connected to the high-power microwave source, and the high-power microwave receiving antenna is placed in alignment with the high-power microwave transmitting antenna to obtain excitation; The first-level programmable microwave switch is a double-pole six-throw switch; wherein, pin ① and pin ② of the first-level programmable microwave switch are respectively used for connecting a high-frequency test channel and a low-frequency test channel, and the first-level programmable microwave switch is set to an open circuit state of the high-frequency test channel and the low-frequency test channel by connecting pin ① to pin ③ and pin ② to pin ⑧; the HIRF receiving antenna is connected to pin ④ of the first-level programmable microwave switch; the high-power microwave receiving antenna is connected to pin ⑤ of the first-level programmable microwave switch; the HIRF conduction simulation source is connected to pin ⑥ of the first-level programmable microwave switch; the nuclear electromagnetic pulse source is connected to pin ⑦ of the first-level programmable microwave switch; The two-stage programmable microwave switch and the three-stage programmable microwave switch are both single-pole four-throw switches; the two-stage programmable microwave switch and the three-stage programmable microwave switch are both set to an open circuit state of a low-frequency test channel and a high-frequency test channel by connecting pin ① to pin ②; The connection relationship of the low-frequency test channel is as follows: pin ② of the first-level programmable microwave switch and pin ⑤ of the second-level programmable microwave switch are connected by a first high-voltage cable, and a front-stage current probe is connected to the first high-voltage cable, pin ① of the second-level programmable microwave switch is connected to pin ① of the third-level programmable microwave switch via a protection module, pin ⑤ of the third-level programmable microwave switch is connected to a dummy load by a second high-voltage cable and then grounded, and a rear-stage current probe is connected to the second high-voltage cable; The connection relationship of the high-frequency test channel is as follows: pin ① of the first-level programmable microwave switch is connected to pin ④ of the second-level programmable microwave switch via a front-stage directional coupler, pin ① of the second-level programmable microwave switch is connected to pin ① of the third-level programmable microwave switch via a protection module, and pin ④ of the third-level programmable microwave switch is connected to an absorption load via a rear-stage directional coupler; The test channel also includes a transmission characteristic test channel; the transmission characteristic test channel is: a signal transmitting end of a vector network analyzer, a secondary programmable microwave switch, a protection module, a tertiary programmable microwave switch and a signal receiving end of a vector network analyzer connected in sequence; wherein the signal transmitting end of the vector network analyzer is connected to pin ③ of the secondary programmable microwave switch, and the signal receiving end of the vector network analyzer is connected to pin ③ of the tertiary programmable microwave switch; Based on the protection module strong electromagnetic pulse comprehensive protection performance automatic testing system, a protection module strong electromagnetic pulse comprehensive protection performance automatic testing method is implemented, comprising the following steps: Step 1, complete the test preparation work: determine the strong electromagnetic pulse source required for the test, pre-set the maximum allowable range of the transmission characteristic change of the protection module, input the maximum allowable range into the data judgment module, and install the protection module; Step 2: Switch the test channel through the host computer to test the transmission characteristics of the protection module and obtain the initial data of the transmission characteristics of the protection module; Step 3: Switch the test channel through the host computer, use the low-frequency test channel or the high-frequency test channel to test the protection performance of the protection module against strong electromagnetic pulses, and obtain the protection performance index parameters of the protection module against strong electromagnetic pulses tested using the low-frequency test channel or the high-frequency test channel; Step 4: Switch the test channel through the host computer to detect the functional status of the protection module to determine the effectiveness of the protection performance index parameters of the protection module against strong electromagnetic pulses obtained by using the low-frequency test channel or the high-frequency test channel; Step 5: Change the output of the strong electromagnetic pulse source through the host computer, and repeat steps 3 and 4 until the protection performance test of the protection module against the strong electromagnetic pulse source is completed using the low-frequency test channel or the high-frequency test channel.

2. The automatic testing system for the strong electromagnetic pulse comprehensive protection performance of the protection module according to claim 1 is characterized in that: The antenna is placed in a microwave darkroom, which is provided with microwave darkroom transfer hole No. 1, microwave darkroom transfer hole No. 2 and microwave darkroom transfer hole No. 3; wherein the HIRF receiving antenna and the high-power microwave receiving antenna are connected to a primary programmable microwave switch through the microwave darkroom transfer hole No. 1; the HIRF transmitting antenna is connected to a HIRF radiation simulation source through the microwave darkroom transfer hole No. 2; and the high-power microwave transmitting antenna is connected to a high-power microwave source through the microwave darkroom transfer hole No.

3.

3. The automatic testing system for the strong electromagnetic pulse comprehensive protection performance of the protection module according to claim 1 is characterized in that: A front-stage current probe attenuator is connected between the front-stage current probe and the test host; a rear-stage current probe attenuator is connected between the rear-stage current probe and the test host; a front-stage directional coupler attenuator is connected between the front-stage directional coupler and the test host; and a rear-stage directional coupler attenuator is connected between the rear-stage directional coupler and the test host.

4. The automatic testing system for the strong electromagnetic pulse comprehensive protection performance of the protection module according to claim 1 is characterized in that: The response time of the data acquisition card in the test host is shorter than the rising edge time of the excitation signal, and the sampling bandwidth is larger than the bandwidth of the excitation signal.

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