A method for testing the electrostatic charging characteristics of a foil strip

Abstract

The present application provides a kind of foil strip electrostatic charging characteristic test method, it includes: step S1: the foil strip electrostatic charging characteristic test system under the condition of external field is built;Step S2: according to foil strip electrostatic charging characteristic test system, establish three-dimensional coordinate system;Step S3: foil strip launch module remote control foil strip missile launch, the static electricity monitoring module and auxiliary monitoring module carry out test record simultaneously;Step S4: measure and obtain the initial state of the launch of foil strip, diffusion state and the static electric field information and motion trajectory of the state of floating;Step S5: respectively select the initial state of the launch of foil strip, diffusion state and the corresponding one typical trajectory coordinate point of final floating state stage;Step S6: obtain the static electric field test result under different position coordinates, establish position coordinate-static electric field matrix;Step S7: calculate and obtain the electrostatic charging characteristic of foil strip.The present application can directly obtain the electrostatic charging quantity information of foil strip at different stages after launch, provide data for the performance analysis of anti-foil strip interference.

Description

Technical Field

[0001] This invention belongs to the field of target characteristic testing technology, and specifically relates to a method for testing the electrostatic properties of foil strips. Background Technology

[0002] Faced with an increasingly complex electronic warfare environment, many existing devices have explicitly stated their need for chaff interference resistance. The emergence of chaff interference poses a severe challenge to traditional radio detection, inevitably limiting the effectiveness of existing equipment. Electrostatic properties are inherent to targets; triboelectric charging and tip discharge effects during flight are unavoidable. Electrostatic detection primarily obtains target information by detecting changes in the target's electrostatic induction field. Therefore, theoretically, electrostatic detection can effectively overcome the shortcomings of traditional radio detection, such as poor adaptability to electromagnetic environments and susceptibility to chaff cloud interference. To further verify the performance of electrostatic detection against chaff interference and analyze the influence of chaff on electrostatic detection, it is necessary to effectively obtain the electrostatic charge characteristics of the chaff, i.e., the electrostatic charge after chaff emission.

[0003] Currently, research on foil properties focuses on electromagnetic scattering characteristics, with limited attention paid to its electrostatic properties. Furthermore, due to various uncertainties arising from both the longitudinal and transverse planes, such as external aerodynamics, inter-unit collisions, and instability, the motion characteristics of foil are inconsistent and prone to random phenomena. The state of friction and collision with air is difficult to estimate, making it challenging to obtain the electrostatic properties of the foil through theoretical analysis and calculation. Therefore, there is an urgent need to propose a method for testing the electrostatic charge characteristics of foil. Summary of the Invention

[0004] The purpose of this invention is to provide a method for testing the electrostatic charge characteristics of foil strips, so as to solve the problem of missing input of foil strip charge characteristics during electrostatic detection analysis, and to provide data support for the performance analysis and verification of anti-foil strip interference of modern equipment.

[0005] To achieve the above objectives, the present invention provides a method for testing the electrostatic charge characteristics of foil strips, comprising: Step S1: constructing an experimental system for testing the electrostatic charge characteristics of foil strips under external field conditions; the experimental system includes: an electrostatic monitoring module, which is disposed below the foil strip emission path and is used to monitor the electrostatic field information of the foil strip at different stages; a foil strip emission module, used to control the emission of the foil strip to simulate the situation of generating foil strip interference equipment; and an auxiliary monitoring module, which is disposed on the opposite side of the electrostatic monitoring module and is used to monitor the diffusion process after the foil strip is emitted; Step S2: the electrostatic charge characteristics experimental system for foil strips constructed according to Step S1... Step S3: The chaff launching module remotely controls the launching of the chaff projectile, and the electrostatic monitoring module and the auxiliary monitoring module simultaneously conduct test recording; Step S4: Measure and obtain the electrostatic field information and motion trajectory of the chaff in the initial launch state, diffusion state, and final fall state; Step S5: Select a typical trajectory coordinate point corresponding to the initial launch state, diffusion state, and final fall state of the chaff, and introduce time data; Step S6: Obtain the electrostatic field test results under different position coordinates and establish the position coordinate-electrostatic field matrix; Step S7: Calculate and obtain the electrostatic charge characteristics of the chaff.

[0006] Preferably, the electrostatic monitoring module includes: an electrostatic sensor disposed on the side of the foil emission path to monitor the electrostatic field generated by the foil itself after emission; an electrostatic field testing device communicatively connected to the electrostatic sensor to receive the electrostatic field information monitored by the electrostatic sensor and assign time information to the electrostatic field information; and an electrostatic measurement system communicatively connected to the electrostatic field testing device to store the electrostatic field information containing time information.

[0007] Preferably, the chaff launching module includes: a chaff launching device with a hanging structure on which test chaff is suspended; and a chaff launching ground control device, which is communicatively connected to the chaff launching device and is used to send chaff launching commands.

[0008] Preferably, the auxiliary monitoring module includes: a foil motion monitoring system for acquiring the diffusion trajectory of the foil during the diffusion process; the foil motion monitoring system includes a high-speed camera and an infrared imager; and a total station for measuring the position information of the deployed electrostatic field sensors.

[0009] Preferably, step S2, which establishes a three-dimensional coordinate system based on the chaff electrostatic charge characteristic test system built in step S1, includes the following steps: Step S21: Calibrate the position information of the chaff launcher. Using the position of the chaff launcher as the origin P0, establish a three-dimensional coordinate system to record the position change information after chaff launch; Step S22: Measure the position information of the electrostatic sensor and generate position coordinates; Use a total station to measure the position information of the deployed electrostatic field sensor and record the position coordinates P of the electrostatic field sensor in the three-dimensional coordinate system. j .

[0010] Preferably, in step S4, the center point P of the final scattered area of ​​the foil strip is marked. n The position is measured by a total station, and the motion trajectory curves of the generated foil strip in the initial launch state, diffusion state and falling state are plotted.

[0011] Preferably, the three typical trajectory coordinate points corresponding to the initial emission state, diffusion state and final falling state of the foil strip selected in step S5 are P1(t1), P2(t2) and P3(t3) respectively after introducing time data.

[0012] Preferably, step S6 uses P0(t0), P1(t1), P2(t2), P3(t3), and P n (t n The time information at different locations was retrieved from the electrostatic measurement system, showing the corresponding electrostatic field test results at those times: E0(t0), E1(t1), E2(t2), E3(t3), and E... n (t n ).

[0013] Preferably, the electrostatic charges Q0(t0), Q1(t1), Q2(t2), Q3(t3), and Q are calculated using the electrostatic field test results at different times. n (t n The calculation formula is shown in equation (1):

[0014]

[0015] In equation (1), r is the position P n (t n ) to the position P of the electrostatic sensor (11) j The distance is α = 0, 1, 2, 3, n, where ε0 is the vacuum permittivity.

[0016] In summary, compared with the prior art, the electrostatic charge characteristic testing method for foil provided by this invention has the following beneficial effects: by setting up an electrostatic sensor and an electrostatic field testing device, the electrostatic charge information of the foil at different stages after emission can be directly obtained; the electrostatic charge characteristic of the foil can be calculated using the formula for calculating the electrostatic charge of the foil, solving the problem of missing input of the electrostatic charge characteristic of the foil during electrostatic detection and analysis; finally, the testing method and experimental system of this invention can provide data support for the performance analysis and verification of anti-foil interference of modern equipment. Attached Figure Description

[0017] Figure 1 This is a flowchart of the electrostatic charge characteristic testing method for foil strips according to the present invention;

[0018] Figure 2 This is a schematic diagram of the foil electrostatic charge electrical characteristic testing system and test scenario of the foil electrostatic charge electrical characteristic testing method of the present invention;

[0019] Figure 3 This is an example diagram illustrating the aerial motion of chaff after it has been launched.

[0020] Figure 4 This is a schematic diagram of the coordinates of the foil strip's movement trajectory;

[0021] Figure 5 This is a schematic diagram illustrating the calculation principle of the charge characteristics of foil strips. Detailed Implementation

[0022] The following will be combined with the appendix in the embodiments of the present invention. Figure 1 ~Attached Figure 5 The technical solutions, structural features, objectives and effects achieved in the embodiments of the present invention will be described in detail.

[0023] It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions. They are only used to facilitate and clarify the purpose of illustrating the embodiments of the present invention, and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationship, or adjustments to the size should still fall within the scope of the technical content disclosed in the present invention, provided that they do not affect the effects and objectives that the present invention can produce.

[0024] It should be noted that, in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only the expressly listed elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0025] This invention provides a method for testing the electrostatic properties of foil strips, such as... Figure 1 As shown, the method for testing the electrostatic properties of the foil strip includes the following steps:

[0026] Step S1: Construct a test system for the electrostatic charge characteristics of foil under external field conditions;

[0027] like Figure 2 As shown, the test system includes: an electrostatic monitoring module 1, which is located below the emission path of the foil strip 100, for monitoring the electrostatic field information of the foil strip 100 at different stages; a foil strip emission module 2, for controlling the emission of the foil strip 100 to simulate the situation where the foil strip 100 interferes with the device; and an auxiliary monitoring module 3, which is located on the opposite side of the electrostatic monitoring module 1, for monitoring the diffusion process after the foil strip 100 is emitted.

[0028] Specifically, such as Figure 2 As shown, the electrostatic monitoring module 1 includes: an electrostatic sensor 11, which is disposed on the side of the emission path of the foil strip 100 to monitor the electrostatic field generated by the foil strip 100 after emission; an electrostatic field testing device 12, which is communicatively connected to the electrostatic sensor 11 to receive the electrostatic field information monitored by the electrostatic sensor 11 and assign time information to the electrostatic field information; and an electrostatic measurement system 13, which is communicatively connected to the electrostatic field testing device 12 to store the electrostatic field information containing time information.

[0029] Furthermore, such as Figure 2 As shown, the chaff launching module 2 includes: a chaff launching device 21, which has a hanging structure (not shown) on which the test chaff 100 is suspended; and a chaff launching ground control device 22, which is communicatively connected to the chaff launching device 21 and is used to send chaff launching commands. The auxiliary monitoring module 3 includes: a chaff motion monitoring system 31, used to acquire the diffusion trajectory of the chaff 100 during the diffusion process; and a total station 32, used to measure the position information of the deployed electrostatic field sensors 11.

[0030] The foil motion monitoring system 31 includes a high-speed camera and an infrared imager. The high-speed camera has high sensitivity and high resolution, and can monitor the diffusion process of the foil 100 throughout the entire process. The infrared imager is used to assist in monitoring the diffusion process of the foil 100. By measuring the movement of the foil 100 through the infrared spectrum emitted by the infrared imager, the shortcomings of the optical imaging of the high-speed camera can be further compensated.

[0031] Step S2: Based on the electrostatic charge characteristic test system of the foil strip built in Step S1, establish a three-dimensional coordinate system; specifically including:

[0032] Step S21: Calibrate the position information of the chaff launcher 21. Using the position of the chaff launcher 21 as the origin P0, establish a three-dimensional coordinate system to record the position change information of the chaff 100 after it is launched.

[0033] Step S22: Measure the position information of the electrostatic sensor 11 and generate position coordinates; use a total station 32 to measure the position information of the deployed electrostatic field sensor 11, and record the position coordinates P of the electrostatic field sensor 11 in the three-dimensional coordinate system. j .

[0034] Step S3: The chaff launching module 2 remotely controls the launching of chaff, while the electrostatic monitoring module 1 and the auxiliary monitoring module 3 simultaneously conduct test recording.

[0035] Specifically, the chaff launcher 22 issues a launch command, and the chaff launcher 21 ejects the chaff 100 from the origin P0. At the moment of launch, the electrostatic field testing device 12 and the chaff motion monitoring system 31 simultaneously begin recording, recording the moment of launch as t0. Since the electrostatic field testing device 12 and the chaff motion monitoring system 31 have built-in time recording functions, a one-to-one correspondence between the time, position coordinates, and electrostatic field information of the chaff 100 can be achieved.

[0036] Step S4: Measure and acquire the electrostatic field information and trajectory of the initial emission state, diffusion state, and falling state of the foil strip 100, and mark the center point P of the final scattering area of ​​the foil strip 100. n The total station 32 was used to measure the position and generate the motion trajectory curve of the foil strip 100 throughout its entire movement process.

[0037] Specifically, such as Figure 3 As shown, after the chaff 100 is launched, it will experience the initial state of the chaff bullet (such as...). Figure 3 (a) shows the foil cloud in the initial diffusion state (as shown in the image). Figure 3 (b) as shown) and the foil cloud in the fully diffused state (as shown) Figure 3(c) shows different stages. Electrostatic field information at different stages is obtained by measuring electrostatic sensor 11; the movement trajectory of foil 100 at different stages of the process is obtained by foil movement monitoring system 31. This movement trajectory is used to determine the relative position / distance between foil 100 and electrostatic sensor 11 when calculating electrostatic charge characteristics from electrostatic field information.

[0038] Furthermore, based on the measurements of P0 and P2 obtained by total station 32... n Using coordinates and data from the chaff motion monitoring system 31, the entire motion trajectory of the chaff 100 after launch is plotted, such as... Figure 4 As shown, P0 and P n After incorporating time information, they are recorded as P0(t0) and P... n (t n ).

[0039] Step S5: Select a typical trajectory coordinate point corresponding to the initial state, diffusion state and final falling state of the foil launch, and introduce time data respectively; in this embodiment, the three typical trajectory coordinate points are denoted as P1(t1), P2(t2) and P3(t3) respectively after introducing time data.

[0040] Specifically, the three typical trajectory coordinate points are arbitrarily selected from each of the three stages: the initial state, the diffusion state, and the final falling state. By introducing time data, the electrostatic field information generated by the foil strip 100 at its current position is obtained.

[0041] Step S6: Obtain the electrostatic field test results at different location coordinates and establish the location coordinate-electrostatic field matrix;

[0042] Specifically, through P0(t0), P1(t1), P2(t2), P3(t3), and P n (t n The time information at different locations is retrieved from the electrostatic measurement system 13 to find the corresponding electrostatic field test results at those times, namely E0(t0), E1(t1), E2(t2), E3(t3), and E... n (t n ).

[0043] Step S7: Calculate and obtain the electrostatic properties of the foil strip;

[0044] Specifically, the electrostatic charges Q0(t0), Q1(t1), Q2(t2), Q3(t3), and Q on the foil 100 at different times were calculated using the electrostatic field test results. n (t n ), that is, the electrostatic properties of the foil, such as Figure 4 As shown. Taking P0(t0) as an example, as... Figure 5 The schematic diagram for calculating the charge characteristics of the foil strip is shown, and the calculation formula is shown in equation (1):

[0045]

[0046] In equation (1), r represents the distance from position P0(t0) to position P of electrostatic sensor 11. j The distance is ε0, which is a physical constant representing the vacuum permittivity.

[0047] Equation (1) shows that there is a direct relationship between the electrostatic field E generated by the foil strip 100 and its own static charge Q. That is, the electrostatic field E is directly proportional to the charge Q and inversely proportional to the square of the distance r. Therefore, by calculating and analyzing the electrostatic field E obtained by the electrostatic sensor 11 at a certain position, the change law of the static charge characteristics after the foil strip 100 is emitted can be obtained.

[0048] In summary, compared with the prior art, the electrostatic charge characteristic testing method of the foil strip provided by the present invention can directly obtain the electrostatic charge information of the foil strip 100 at different stages after emission, solve the problem of missing electrostatic charge characteristic input of the foil strip during electrostatic detection analysis, and provide data support for the performance analysis and verification of anti-foil interference of modern equipment.

[0049] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A method for testing the electrostatic properties of foil strips, characterized in that, include: Step S1: Construct a test system for the electrostatic charge characteristics of foil under external field conditions; The test system includes: an electrostatic monitoring module (1), which is located below the emission path of the foil (100) and is used to monitor the electrostatic field information of the foil (100) at different stages; a foil emission module (2), which is used to control the emission of the foil (100) to simulate the situation where the foil (100) interferes with the device; and an auxiliary monitoring module (3), which is located on the opposite side of the electrostatic monitoring module (1) and is used to monitor the diffusion process after the foil (100) is emitted. Step S2: Based on the electrostatic charge characteristic test system of the foil strip built in Step S1, establish a three-dimensional coordinate system; Step S3: The chaff launching module (2) remotely controls the launching of chaff, and the electrostatic monitoring module (1) and the auxiliary monitoring module (3) simultaneously carry out test recording; Step S4: Measure and acquire electrostatic field information and motion trajectory of the foil strip (100) in the initial emission state, diffusion state and falling state; Step S5: Select a typical trajectory coordinate point corresponding to the initial state, diffusion state and final drifting state of the chaff launch, and introduce time data respectively; Step S6: Obtain the electrostatic field test results at different location coordinates and establish the location coordinate-electrostatic field matrix; Step S7: Calculate and obtain the electrostatic properties of the foil.

2. The method for testing the electrostatic charge characteristics of foil strips as described in claim 1, characterized in that, The electrostatic monitoring module (1) includes: An electrostatic sensor (11) is disposed on the side of the emission path of the foil strip (100) to monitor the electrostatic field generated by the foil strip (100) itself after emission; An electrostatic field testing device (12) is communicatively connected to the electrostatic sensor (11) and is used to receive electrostatic field information monitored by the electrostatic sensor (11) and assign time information to the electrostatic field information. An electrostatic measurement system (13) is communicatively connected to the electrostatic field testing equipment (12) and is used to store electrostatic field information containing time information.

3. The method for testing the electrostatic charge characteristics of foil strips as described in claim 2, characterized in that, The foil emitting module (2) includes: The chaff launcher (21) is provided with a suspension structure on which test chaff (100) is suspended; The chaff launch ground control device (22) is communicatively connected to the chaff launcher (21) and is used to send chaff launch commands.

4. The method for testing the electrostatic charge characteristics of foil strips as described in claim 3, characterized in that, The auxiliary monitoring module (3) includes: A foil motion monitoring system (31) is used to acquire the diffusion trajectory of the foil (100) during the diffusion process; the foil motion monitoring system (31) includes a high-speed camera and an infrared imager; The total station (32) is used to measure the location information of the deployed electrostatic sensors (11).

5. The method for testing the electrostatic charge characteristics of foil strips as described in claim 4, characterized in that, Step S2, which describes establishing a three-dimensional coordinate system based on the electrostatic charge characteristic test system of the foil strip constructed in step S1, includes the following steps: Step S21: Calibrate the position information of the chaff launcher (21). Using the position of the chaff launcher (21) as the origin P0, establish a three-dimensional coordinate system to record the position change information of the chaff (100) after it is launched. Step S22: Measure the position information of the electrostatic sensor (11) and generate position coordinates; use a total station (32) to measure the position information of the deployed electrostatic sensor (11) and record the position coordinates P of the electrostatic sensor (11) in the three-dimensional coordinate system. j .

6. The method for testing the electrostatic charge characteristics of foil strips as described in claim 4, characterized in that, Step S4 marks the center point P of the final scattered area of ​​the foil strip (100). n The position is measured by a total station (32), and the motion trajectory curves of the generated foil strip (100) in the initial launch state, diffusion state and falling state are plotted.

7. The method for testing the electrostatic charge characteristics of foil strips as described in claim 4, characterized in that, The three typical trajectory coordinate points corresponding to the initial, diffusion, and final falling states of the chaff selected in step S5 are P1(t1), P2(t2), and P3(t3) after introducing time data.

8. The method for testing the electrostatic charge characteristics of foil strips as described in claim 7, characterized in that, Step S6 uses P0(t0), P1(t1), P2(t2), P3(t3), and P n (t n The time information at different locations is retrieved from the electrostatic measurement system (13) to find the corresponding electrostatic field test results at those times, namely E0(t0), E1(t1), E2(t2), E3(t3) and E n (t n ).

9. The method for testing the electrostatic charge characteristics of foil strips as described in claim 8, characterized in that, The electrostatic charges Q0(t0), Q1(t1), Q2(t2), Q3(t3), and Q2(t3) of the foil strip (100) at different times were calculated using the electrostatic field test results. n (t n The calculation formula is shown in equation (1): In equation (1), r is the position P n (t n ) to the position P of the electrostatic sensor (11) j The distance is α = 0, 1, 2, 3...n, where ε0 is the vacuum permittivity.

Images