CN103335566A - Grid mesh target shell penetration depth testing device - Google Patents
Grid mesh target shell penetration depth testing device Download PDFInfo
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- CN103335566A CN103335566A CN2013102845987A CN201310284598A CN103335566A CN 103335566 A CN103335566 A CN 103335566A CN 2013102845987 A CN2013102845987 A CN 2013102845987A CN 201310284598 A CN201310284598 A CN 201310284598A CN 103335566 A CN103335566 A CN 103335566A
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Abstract
The invention discloses a grid mesh target shell penetration depth testing device and a testing method. The grid mesh target shell penetration depth testing device comprises a grid line, a trigger circuit, a trigger cable, a high-speed camera, a signal processing circuit and a general PC. The grid line is arranged inside a target and connected with the signal processing circuit. The trigger cable is arranged on the target. The output end of the trigger cable, the input end of the trigger circuit and the output end of the trigger circuit are respectively connected with the data trigger input end of the high-speed camera and the input end of the signal processing circuit, and the output end of the signal processing circuit is connected with the input end of the general PC. According to the grid mesh target shell penetration depth testing device and the testing method, on-off signals of the grid line are utilized for distinguishing the depth of the shell penetrating the target, the high-speed camera and the signal processing circuit are utilized for achieving accurate record and fast analysis of the on-off signals of the grid line with a plurality of channels, and the device is low in testing cost, and high in precision and reliability.
Description
Technical field
The present invention relates to a kind of measuring technology, refer more particularly to a kind of grid target shell and invade dark measuring technology, belong to the industrial test technical field.
Background technology
In the penetrator study field, earth-drilling bomb is important test event to the Penetration Depth of target, can finish the Performance Evaluation of earth-drilling bomb and warhead structure improvement etc. according to the Penetration Depth that records.Attack at fighter plane projection bomb in the target test such as bunker, need the accurately degree of depth of test bomb penetration bunker, for the improvement design of bomb provides the data foundation.Invade dark class testing task for this class, mainly contain two class testing technology at present, the first kind is to utilize GPR that the shell in the concrete target is surveyed: the frequency electromagnetic waves of concrete target being launched hundreds of MHz with GPR, shell is catoptric imaging under frequency electromagnetic waves, along with the Penetration Depth difference, the image that GPR returns has difference, the position of image discriminating shell in target of returning by GPR.There are the following problems to utilize the GPR imaging test to invade dark method: for the professional experiences that the identification of invading dark image need be enriched, different analysts may draw the different dark test results of invading, and are easy to generate erroneous judgement, operating personnel's professional knowledge are required high.Secondly, the GPR apparatus expensive, and need professional training just can operate, the Test Application cost is also higher.Second method is pre-buried acceleration transducer in concrete target, the signal characteristic that utilizes acceleration transducer to measure is invaded dark theoretical analysis method: during the concrete cast, pre-buried a plurality of acceleration transducers on the reinforcing bar at the different depth place in concrete target, when shell penetration concrete target, the degree of depth difference of shell penetration, the shock response acceleration signal amplitude difference that acceleration transducer is measured is differentiated the degree of depth of shell penetration according to the generation time difference of the time domain amplitude of acceleration signal and different depth acceleration transducer test signal.Thisly utilize acceleration transducer to measure the impact acceleration signal amplitude to differentiate shell and invade the tested method that proves the precision extreme difference of testing of dark method, even a lot of occasions can't be used, because the impact acceleration ripple that the shell penetration produces comes the back reflective stack in concrete target, and impact signal amplitude test error is bigger, often produce problem or the fracture of acceleration transducer signals transmission cable of amplitude outrange, can't successfully test the time history curve of the impact acceleration of complete penetration process, therefore can't differentiate and invade deeply.In addition, invade dark test for realizing high-resolution, used acceleration transducer number is more, and experimental test has damage, and repeatedly test can't be reused the acceleration transducer of landfill, causes the testing cost height, measuring accuracy is poor, and this technology is used for testing to invade deeply also being in theoretical research stage.
Summary of the invention
Purpose of the present invention provides a kind of testing cost low with regard to being in order to address the above problem, and can realize that the grid target shell of the high precision measurement of the target degree of depth such as shell penetration concrete target, bunker is invaded dark measuring technology.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes the grid lead, circuits for triggering, trigger cable, the high speed camera, signal processing circuit, general purpose PC, described grid lead is arranged in the target, described grid lead is connected with described signal processing circuit, described triggering cable is arranged on the described target, the output of described triggering cable links to each other with the input of described circuits for triggering, the output of described circuits for triggering is connected with input in the described signal processing circuit with the trigger collection input of described high speed camera respectively, and the output in the signal processing circuit is connected with described general purpose PC input.
Further, described signal processing circuit comprises LED lamp array, grid make-and-break signal Acquisition Circuit, data storage circuitry, the triggering output of described circuits for triggering links to each other with the triggering input of described grid make-and-break signal Acquisition Circuit, described LED lamp array and described grid make-and-break signal Acquisition Circuit are provided with the RJ45 port, described grid lead is connected with the negative pole of described LED lamp array and the digital I/O input of described grid make-and-break signal Acquisition Circuit respectively by described RJ45 port, and the output of described grid make-and-break signal Acquisition Circuit is connected with the input of described data storage circuitry.
Particularly, described grid lead comprises two groups of parallel plain conductors, and every group of described plain conductor is made up of eight plain conductors that are parallel to each other, and is vertical mutually between two groups of plain conductors.
Further, described plain conductor is provided with insulating barrier, prevents that plain conductor from making moist or lost efficacy.
Particularly, described grid lead is one deck or multilayer, in targets such as concrete or bunker, its inside different depth is carried out layering, on the reinforcing bar of each layer, arrange the grid lead in advance, the spacing d of grid lead is determined by the diameter Ф of shell, requires the spacing d＜Ф of any two grids, guarantees that shell effectively cuts off the grid lead in the penetration process; The number of plies N of grid lead is by the thick l of target and invade dark measuring resolution r decision, N=l/r, and the quantity of every layer of grid lead determines that by length and the width of target the two ends of grid lead are exposed at the outer end of targets such as concrete or bunker to make things convenient for wiring.
The input of all grids is linked to each other with the ground of supply unit, then to the grid lead on each layer of target, form one group of test cell with per eight grid leads, the output of these eight grid leads links to each other with a RJ45 network interface in the signal processing circuit by eight core netting twines, this RJ45 network interface again with signal processing circuit on the negative pole of corresponding eight LED lamps and eight digital I/O inputs of grid make-and-break signal Acquisition Circuit link to each other, and be each LED lamp numbering, make the corresponding grid lead of each LED lamp.Comprise a plurality of LED lamp arrays and a plurality of digital I/O treatment circuit composition in the signal processing circuit, the classification of satisfying all grid leads on the target connects.Grid make-and-break signal Acquisition Circuit on the signal processing circuit is by the CPLD designs.Grid make-and-break signal Acquisition Circuit is sent ferroelectric memory FRAM storage with the break-make data signal of gathering, after test is finished, USB interface data transmission circuit in the recycling signal processing circuit uploads to the mass data among the ferroelectric memory FRAM in the general purpose PC, is finished the differentiation of all grid make-and-break signals by the data readback analysis software.Simultaneously the CPLD treatment circuit is also finished data/address bus, the address bus of ferroelectric memory FRAM and usb data transmission circuit interface chip, the sequential logic control of command line.
Trigger cable one of target surface arrangement, should trigger cable and insert circuits for triggering, when cable did not rupture, circuits for triggering were output as low level, when cable breakage, and circuits for triggering output high level.The output of circuits for triggering is linked to each other with the triggering input of grid make-and-break signal Acquisition Circuit in the external digital trigger collection end of high speed camera and the signal processing circuit respectively.
Beneficial effect of the present invention is:
The present invention adopts the make-and-break signal of multichannel grid lead to differentiate the degree of depth of shell penetration target, and testing cost is low, precision is high, reliability is high, realizes the high-resolution dark test of invading.
Description of drawings
Fig. 1 is the structure composition frame chart of the technology of the present invention;
Fig. 2 is the signal processing circuit composition frame chart of the technology of the present invention;
Fig. 3 is the CPLD treatment circuit composition frame chart of the technology of the present invention;
Fig. 4 is LED lamp and the CPLD input circuit interface principle figure of one group of grid lead of the technology of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the present invention includes the grid lead, circuits for triggering, trigger cable, the high speed camera, signal processing circuit, general purpose PC, described grid lead is arranged in the target, described grid lead is connected with described signal processing circuit, described triggering cable is arranged on the described target, the output of described triggering cable and the input of described circuits for triggering, the output of described circuits for triggering is connected with input in the described signal processing circuit with the trigger collection input of described high speed camera respectively, and the output in the signal processing circuit is connected with described general purpose PC input.
As shown in Figure 2, the operation principle of this technology is as follows: the output of supply unit links to each other with the input of multichannel grid lead; The 5V voltage output end of supply unit links to each other with the power interface of signal processing circuit and the power interface of circuits for triggering respectively, realizes the power supply to signal processing circuit and circuits for triggering; In the test room, utilize the LED lamp array in the high speed camera registration signal treatment circuit, multichannel grid lead links to each other with RJ45 interface in the signal processing circuit by many eight core netting twines, the RJ45 interface again with signal processing circuit on LED lamp negative pole and the input of the grid make-and-break signal Acquisition Circuit in the signal processing circuit link to each other; Trigger cable and link to each other with the input of circuits for triggering, trigger cable arrangements on the surface of target, original state is conducting state, what make circuits for triggering initially is output as low level state, when shell penetration target, trigger cable and at first rupture, make circuits for triggering be output as high level signal.This signal is sent into respectively in the trigger interface of the external digital trigger interface of high speed camera and signal processing circuit, make signal processing circuit carry out data acquisition, storage operation to many grid lead on off operating modes immediately, make the high speed camera take the light on and off state of the LED lamp in the signal processing circuit immediately.The test original state, keep all LED lamps to be in highlighted state, the input of the grid make-and-break signal Acquisition Circuit in the signal processing circuit is low level, when the shell penetration causes the grid fracture, the LED lamp of the grid lead correspondence of fracture extinguishes, and the input of the grid make-and-break signal Acquisition Circuit in the signal processing circuit becomes high level.After the off-test, for judging the Penetration Depth of shell, a kind of method is the degree of depth of the light on and off condition discrimination shell penetration of the omnidistance led array lamp taken of playback high speed camera, when the shell penetration arrives certain layer, the LED lamp of respective layer extinguishes the part, and the layer that arrives of penetration not, it is highlighted that the LED lamp still keeps, and utilizes this information and the position of grid lead in target can determine the Penetration Depth of shell immediately; Second method is, when the scene does not have high speed camera equipment, directly utilize the USB mouth of general purpose PC to link to each other with usb data coffret in the signal processing circuit, utilize the USB mouth with the signal high speed retaking of a year or grade among the ferroelectric memory FRAM in the data storage circuitry in the signal processing circuit in the data readback analysis software that is installed in the general purpose PC, the retaking of a year or grade analysis software utilizes the on off operating mode of virtual LED indication grid, thereby it is dark to judge invading of shell.
As shown in Figure 2, described signal processing circuit comprises LED lamp array, grid make-and-break signal Acquisition Circuit, data storage circuitry, the triggering output of described circuits for triggering links to each other with the triggering input of described grid make-and-break signal Acquisition Circuit, described LED lamp array and described grid make-and-break signal Acquisition Circuit are provided with the RJ45 port, described grid lead is connected with the negative pole of described LED lamp array and the digital I/O input of described grid make-and-break signal Acquisition Circuit respectively by described RJ45 port, the output of described grid make-and-break signal Acquisition Circuit is connected with the input of described data storage circuitry, when the triggering signal interface is received skip signal from the low level to the high level, grid make-and-break signal Acquisition Circuit starts sends grid lead on off operating mode signals collecting here to the RJ45 network interface, the grid lead does not rupture, then corresponding grid make-and-break signal passage is input as low level, when the grid lead is cut off by shell, grid make-and-break signal passage be input as high level, grid make-and-break signal Acquisition Circuit is gathered all grid on off operating mode signals with the sample frequency of 100kHz, and the result that will gather send data storage circuitry to preserve omnidistance signal by ferroelectric memory FRAM, up to EOT.The bright dark reflection time of LED lamp array is the ns level, can respond the make-and-break signal of the corresponding grid lead that connects fully.
As shown in Figure 3, the CPLD treatment circuit is made up of clock circuit, JTAG download circuit, power interface, triggering signal interface, multichannel grid state input interface, usb data coffret, ferroelectric memory FRAM interface.Clock circuit links to each other with the input end of clock of CPLD device; Power interface links to each other with the core voltage interface with the IO voltage interface of CPLD; Triggering signal takies the general purpose I passage of CPLD; Multichannel grid state input interface takies a plurality of general purpose I passages of CPLD, is defined as IO input port P1; The JTAG download circuit links to each other with the download interface of CPLD device, realizes the ISP programming to the CPLD device; A plurality of general purpose I passages in the CPLD device are defined as mutual port P2, mutual port P3 respectively, and wherein mutual port P2 links to each other with data/address bus, address bus, the command line of ferroelectric memory; Mutual port P3 links to each other with data/address bus, address bus, the command line of usb data coffret.Utilize mutual port P2, mutual port P3, and utilize hardware description language to describe the sequential logic of each device, realize the sequential logic control of the ferroelectric memory of CPLD, usb data coffret, thereby realize that the CPLD treatment circuit transmits to the collection of multichannel grid make-and-break signal, storage with to PC.
As shown in Figure 4, this group test cell is made up of eight LED lamps of a RJ45 network interface socket, D1～D8, eight CPLD universal I/O ports, power supply VCC and the pull-up resistor R1～R16 of IO1～IO8.Wherein, every delivery outlet line in the RJ45 network interface links to each other with the negative pole of corresponding LED lamp, and the LED lamp links to each other with VCC by pull-up resistor, and eight CPLD universal I/O ports link to each other with VCC by pull-up resistor.When the grid lead that links to each other with this RJ45 network interface in the target does not rupture, the LED lamp of respective channel directly links to each other with ground with the IO port of the CPLD of correspondence, then the LED lamp of respective channel is bright, the IO port of corresponding CPLD is low level, when when the shell penetration, cutting off with grid lead that this RJ45 network interface links to each other, the negative pole of the LED lamp of respective channel disconnects with ground, and then the LED lamp of respective channel extinguishes, and the IO port of corresponding CPLD is locked in high level by VCC and pull-up resistor with incoming level.Can note the on off operating mode of each grid lead by the high-low level state of each grid lead institute communication channel of record RJ45 network interface.
In the present embodiment, the concrete target that is used for penetration test is of a size of: long 800mm * wide 600mm * high 600mm, four layers of grid lead have been arranged at its length direction, the grid lead comprises two groups of parallel plain conductors, every group of described plain conductor is made up of eight plain conductors that are parallel to each other, vertical mutually between two groups of plain conductors, plain conductor is provided with insulating barrier, the distance of any two-layer barrier line is designed to 100mm, and the grille cloth on every layer is set to 4 of widths, 4 of short transverses.The diameter of considering the penetration shell is Ф 25mm, for increasing measuring accuracy, the spacing of per two grids is designed to 20mm, wherein also makes certain root grid lead by every layer of center, consistent with the penetration trajectory of shell to guarantee, every grid lead before the concrete cast predetermined fixed on reinforcing bar.Utilize the LED lamp array on the high speed camera registration signal treatment circuit during test, every grid is formed one group through numbering by per four and is linked to each other with a RJ45 mouth on the signal processing circuit by a netting twine, has 8 groups of LED lamps.The sample frequency of the grid make-and-break signal Acquisition Circuit on the digital signal processing circuit is 100kHz, the CPLD device of selecting is AlteraEPM7192S, adopt the 5V power supply, ferroelectric memory is chosen as FM22L16 type 256K * 16 memories that RAMTRON company produces, 32 road grid leads for test usefulness, gather with 100kHz, the storable time is 1.28s, satisfies test request fully.The FT245BM type USB transmission chip that the usb data transmission interface circuit selects FTDICHIP company to produce, the maximum transmission rate of this chip can reach 1Mbyte/s.The initial velocity of shell is designed to 800m/s.
Before the test, utilize the LED lamp array in the high speed camera registration signal treatment circuit, regulate high speed camera parameter, make the high speed camera can photograph all LED lamps on the signal processing circuit, and make imaging clear.Test process: each test cell such as returns at original state to be collected, all LED lamps are in highlighted state, the I/O input end of all grid make-and-break signal Acquisition Circuit is in low level state, the penetration target fires shells, shell is cut off the triggering cable at first, circuits for triggering produce low level immediately to the hopping edge of high level after triggering cable breakage, trigger high speed camera and grid make-and-break signal Acquisition Circuit and gather the on off operating mode of grid lead, speed penetration concrete target about utilizing light-gas gun loading shell with 800m/s, the grid lead that contacts with shell is cut off by shell, then the corresponding LED lamp that links to each other with this grid lead and power supply ground disconnect, the LED lamp extinguishes, the I/O input of grid make-and-break signal Acquisition Circuit becomes high level by low level, along with going deep into of shell penetration, grid lead on the target respective layer is cut off, and the LED lamp of grid correspondence extinguishes, up to EOT.The high speed camera is noted the light on and off state that begins the led array to the signal processing circuit of EOT from test, and grid make-and-break signal Acquisition Circuit will be tested omnidistance grid lead on off operating mode signal and is recorded among the ferroelectric memory FRAM.
After test is finished, can adopt two kinds of approach to differentiate shell and invade dark result.A kind of method is the LED lamp array light on and off status image of utilizing playback high speed camera to photograph, when the LED lamp is bright, prove that corresponding grid lead does not rupture, when shell during through certain layer in the target, grid lead in the respective layer ruptures the part in a large number, then extinguish in a large number Dui Ying LED lamp part, can judge the degree of depth of shell penetration from the position that the LED lamp extinguishes.To be the USB mouth that utilizes general purpose PC upload to the global test data among the ferroelectric memory FRAM in the signal processing circuit in the data readback analysis software in the general purpose PC by signal circuit second method, the on off operating mode of design virtual LED indicator lamp indication grid lead in data readback software, when the data of this virtual LED indicator lamp correspondence are high level " 1 ", the virtual LED indicator lamp extinguishes, otherwise indicator lamp is highlighted, retaking of a year or grade limit, data limit shows the state of virtual LED indicator lamp, can effectively judge invading of shell from the state of virtual LED indicator lamp and deeply convince breath, because USB retaking of a year or grade data speed is fast, for the multiple channel test signal that 1000 grid leads are formed, the signal judgement time can be finished with interior at 10s.Second method is applicable to that the testing ground do not have the occasion of high speed camera.
Claims (5)
1. a grid target shell is invaded dark testing arrangement, it is characterized in that: comprise the grid lead, circuits for triggering, trigger cable, the high speed camera, signal processing circuit, general purpose PC, described grid lead is arranged in the target, described grid lead is connected with described signal processing circuit, described triggering cable is arranged on the described target, the output of described triggering cable and the input of described circuits for triggering, the output of described circuits for triggering is connected with input in the described signal processing circuit with the data-triggered input of described high speed camera respectively, and the output in the signal processing circuit is connected with described general purpose PC input.
2. a kind of grid target shell according to claim 1 is invaded dark testing arrangement, it is characterized in that: described signal processing circuit comprises LED lamp array, grid make-and-break signal Acquisition Circuit, data storage circuitry, the triggering output of described circuits for triggering links to each other with the triggering input of described grid make-and-break signal Acquisition Circuit, described LED lamp array and described grid make-and-break signal Acquisition Circuit are provided with the RJ45 port, described grid lead is connected with the negative pole of described LED lamp array and the digital I/O input of described grid make-and-break signal Acquisition Circuit respectively by described RJ45 port, and the output of described grid make-and-break signal Acquisition Circuit is connected with the input of described data storage circuitry.
3. a kind of grid target shell according to claim 1 is invaded dark testing arrangement, it is characterized in that: described grid lead comprises two groups of plain conductors, every group of described plain conductor is made up of eight plain conductors that are parallel to each other, and be vertical mutually between two groups of plain conductors.
4. a kind of grid target shell according to claim 3 is invaded dark testing arrangement, and it is characterized in that: described plain conductor is provided with insulating barrier.
5. invade dark testing arrangement according to claim 1 and 3 described a kind of grid target shells, it is characterized in that: described grid lead is one deck or multilayer.
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| CN103926846A (en) * | 2014-04-25 | 2014-07-16 | 哈尔滨工业大学 | System for simulating aviation ammunition and generating faults |
| CN105588478A (en) * | 2015-12-23 | 2016-05-18 | 北京航天控制仪器研究所 | Measuring device and measuring method for target-hitting moments |
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| CN111288858A (en) * | 2020-04-07 | 2020-06-16 | 中国工程物理研究院总体工程研究所 | Shell penetration high-impact overload testing device and method |
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| CN111288858A (en) * | 2020-04-07 | 2020-06-16 | 中国工程物理研究院总体工程研究所 | Shell penetration high-impact overload testing device and method |
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