CN109406315A - Firer's shock response many reference amounts cooperative device - Google Patents
Firer's shock response many reference amounts cooperative device Download PDFInfo
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- CN109406315A CN109406315A CN201811448260.XA CN201811448260A CN109406315A CN 109406315 A CN109406315 A CN 109406315A CN 201811448260 A CN201811448260 A CN 201811448260A CN 109406315 A CN109406315 A CN 109406315A
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- 230000004044 response Effects 0.000 title claims abstract description 53
- 230000035939 shock Effects 0.000 title claims abstract description 40
- 230000001133 acceleration Effects 0.000 claims abstract description 60
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 238000013480 data collection Methods 0.000 claims abstract description 17
- 238000001931 thermography Methods 0.000 claims abstract description 16
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
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Abstract
The present invention discloses a kind of firer's shock response many reference amounts cooperative system, it include: data measurement unit and data collection system, the sensor that the data collection system controls multiple channels of the measuring device to synchronize acquires data and stores the collected data of institute.Data measurement unit includes: acceleration transducer, Laser Doppler Velocimeter and high speed thermal imaging system.The many reference amounts cooperative of firer's shock response may be implemented in measuring system provided by the invention, avoids the problem that current firer's impact single measurement information content is few, test consumption is big, can not accurately acquire firer's shock response characteristic comprehensively.
Description
Technical field
The present invention relates to priming system technical fields, more particularly to a kind of firer's shock response measuring device.
Background technique
Firer's impact is typical Transient Dynamics environment, can be by the dynamic strain of structure, displacement, velocity and acceleration
Etc. parameters be described.In ground simulation test, the displacement or speed of blast impulse can be measured with laser doppler vibrometer
Acceleration transducer measurement impact acceleration also can be used with strain-ga(u)ge measurement strain or speed in degree.Not according to measured zone
Together, firer's shock measurement method can be divided into two class of spot measurement and measurement of full field.There is common spot measurement mode in engineering adds
Velocity sensor, foil gauge and laser doppler vibrometer etc.；Shock response in large area may be implemented in measurement of full field method
Acquisition, common method includes thermal imaging, VISAR interferometer etc..
Due to by being limited in practical operation, firer impacts in ground simulation test most common measurement method still at present
It is so the acceleration that blast impulse is directly measured using acceleration transducer.It is more than since firer impacts the acceleration magnitude generated
The range of general acceleration transducer, thus need using special acceleration transducer, to prevent peak accelerator from reaching
The crystal limit and the noise and zero drift phenomenon generated.In addition to this, it is necessary to pay special attention to some details of measuring system, such as
The connection type of conducting wire, the frequency response of digiverter, zero drift, frequency truncation and dynamic range etc..Even if test
DATA REASONING and collection process it is especially careful, data measured may still have very big discreteness, and influence test result can
Reliability.
In order to solve, current firer's impact single test information content is few, test consumption is big, can not accurately acquire comprehensively
The problem of firer's shock response characteristic, should further investigate firer and impact many reference amounts such as displacement, speed, acceleration, explosion impulse
Dynamically continuous and high precision measurement is set from the design of multiple sensor placements, experimental test Fixture Design and acquisition system improvement
Meter, which is angularly started with, carries out further investigation, develops a set of firer with versatility and impacts many reference amounts synchronized measurement system.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of firer's shock response many reference amounts cooperatives
System.The technical problem to be solved in the invention is that firer's impact single test information content is few, test consumption is big, can not be comprehensive
Accurately acquire firer's shock response characteristic.
In order to solve the above technical problems, the invention proposes a kind of firer's shock response many reference amounts cooperative system, packet
It includes:
Data measurement unit, the data measurement unit include the sensor in multiple channels, for measuring in space structure
Shock response on testpieces；With
Data collection system, the data collection system control the sensor in multiple channels of the measuring device to carry out
It synchronously acquires data and stores the collected data of institute,
It is characterized in that, the data measurement unit includes:
Acceleration transducer, the acceleration transducer, which is bonded on space structure testpieces, carries out contact to acceleration
Point measurement；
Laser Doppler Velocimeter, the Laser Doppler Velocimeter alignment point position carry out contactless point to speed
Measurement；With
High speed thermal imaging system, the high speed thermal imaging system change of temperature field adjoint to space structure testpieces impact response into
The contactless field measurement of row.
According to one embodiment of present invention, the acceleration transducer uses the higher piezoresistance type acceleration of resonance frequency
Sensor avoids high-frequency percussion that acceleration transducer is caused to resonate.
According to one embodiment of present invention, the sampling bandwidth of the Laser Doppler Velocimeter passes through to a point side for optimization
Method is determined, and the method for described pair point of optimization includes the following steps:
S1, it is first determined higher sampling bandwidth f1 and lower sampling bandwidth f2 takes its mean value f3=(f1+f2)/2；
S2 compares the phase using the mean value sampling bandwidth f3 speed signal and the speed signal measured using f1 and f2 measured
Like degree；
S3, the speed signal measured according to f3 and the speed signal measured using f1 are more close, continue to take sample strip
Width is f4=(f1+f3)/2, conversely, taking sampling bandwidth is f4=(f2+f3)/2；
S4, continue repeat step S2 and step S3, until using mean value sampling bandwidth and using higher sampling bandwidth or compared with
The speed signal that low sampling bandwidth measures is consistent, that is, determines that mean value sampling bandwidth is the sample strip of Laser Doppler Velocimeter
It is wide.
According to one embodiment of present invention, the data collection system includes:
Acquisition system hardware platform；With
Acquisition system software platform, for realizing the acquisition, communication and human-computer interaction function of data.
According to one embodiment of present invention, the data collection system hardware platform can by using four LTC2175
32 channel analog-to-digital conversions are provided, single channel maximum sample rate can reach 100MS/s, and resolution ratio 14bit is locked using AD9517-3
Phase ring carries out stability contorting to sample frequency by SPI, and quick storage, ADC control may be implemented in two 16GB DDR memory bars
Module is used to control the switch in each channel, and storage control is real by memory interface and 32bit data/address bus and address bus
Exchange between existing two memories, high-speed data passes to Virtex-5 by Virtex-6, total through PCIe after being handled by DSP
Line passes to computer.
According to one embodiment of present invention, the Data Collection Software platform includes:
Communication module；
Acquisition module；
Control module；
UI module；With
Speed/acceleration conversion module.
According to one embodiment of present invention, the control module is internally provided with triggering clock T-Clk, and each sampling is logical
Road according to require sample rate respectively the Different sampling period of T-Clk failing edge trigger, and by accurate sampling clock with
T-Clk carries out feedback alignment and guarantees that each sensor measures the phase corresponding relationship of parameter with this.
According to one embodiment of present invention, the speed/acceleration conversion module uses adaptive-filtering, wavelet filtering
Deng being filtered to high-frequency percussion response signal, noise jamming is eliminated, the overall characteristic of shock response is then considered, utilizes data
Reconfiguration technique by discrete signal reconstruction at unlimited continuous signal, then carries out differential variation, to realize speed to acceleration
High-precision conversion.
A kind of firer's shock response many reference amounts cooperative system according to another embodiment of the invention, comprising:
Memory, for storing executable instruction；And
Processor, for executing the executable instruction stored in memory, to perform the following operations:
The measurement of contact point is carried out to acceleration by acceleration transducer；
Contactless point is carried out to speed by Laser Doppler Velocimeter to measure；
Contactless field measurement is carried out by the adjoint change of temperature field of high speed thermal imaging system impact response；
Analog-to-digital conversion is carried out by data collection system；
Feed back being aligned with T-Clk by sampling clock and guarantees that each sensor measures the corresponding pass of phase of parameter with this
System；
By speed/acceleration conversion module using adaptive-filtering, wavelet filtering etc. to high-frequency percussion response signal into
Row filtering, eliminates noise jamming, the overall characteristic of shock response is then considered, using data reconstruction technology, by discrete signal
It is reconstructed into unlimited continuous signal, then carries out differential variation, so that the high-precision for realizing speed to acceleration is converted
The beneficial effect of firer's shock response many reference amounts cooperative system according to an embodiment of the invention includes
But it is not limited to following one or more:
Firer's shock response many reference amounts cooperated measuring method provided by the invention, can more comprehensively, accurately acquire fire
Work shock response data；
The contactless measurement used in the present invention efficiently avoids the resonance of contact type measurement bring sensor
The problems such as with measurement distortion；
The present invention change of temperature field adjoint by using high speed thermal imaging system real-time measurement shock response, to study thermal field pair
Firer's shock response transmission characteristic affecting laws provide support, facilitate comprehensive, the accurate Characterization of shock response process.
Detailed description of the invention
Detailed description of the present invention embodiment by referring to accompanying drawing, the present invention will become clearer, multiple embodiment quilts
It is illustrated in the drawings with for explanatory purposes, and never should be understood that the range of limitation embodiment.In addition, different
The various features of disclosed embodiment can be combined to form Additional examples of composition, and Additional examples of composition is a part of this disclosure,
In:
Fig. 1 is many reference amounts, multi-channel synchronous measuring system structural block diagram；With
Fig. 2 is the design structure diagram of the multichannel collecting system hardware platform based on FPGA.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.Illustrating
In book, the same or similar drawing reference numeral indicates the same or similar component.Following reference attached drawings are to embodiment of the present invention
Illustrate to be intended to explain present general inventive concept of the invention, and is not construed as to a kind of limitation of the invention.
Before any embodiment of the invention is specifically described, it should be appreciated that concept disclosed herein is not by them
The application arrangement of the thin portion of construction and component that is restricted to illustrate in the following description or illustrate in the following figures.At these
The concept illustrated in embodiment can be practiced or carried out in various ways.Specific phrase and term used herein for the ease of
Description, and should not be considered limiting.
Below in conjunction with the attached drawing in embodiment, the technical solution in embodiment specifically, clearly and completely retouch
It states.
Shown in referring to Fig.1, a kind of firer's shock response many reference amounts cooperative system, including data measurement unit and data
Acquisition system, the data measurement unit include piezoresistance type acceleration sensor, Laser Doppler Velocimeter and high speed thermal imaging system,
The data collection system includes acquisition system hardware platform and acquisition system software platform, and the data collection system controls institute
Each channel sensor for stating measuring device realizes synchronous acquisition, and acquired system is stored the test data measured again.
Shown in referring to Fig.1, the acceleration transducer, which is bonded on space structure testpieces, carries out contact to acceleration
Point measurement, the Laser Doppler Velocimeter alignment point position carry out contactless point to speed and measure, and pass through comparative analysis
The acquisition signal of Laser Doppler Velocimeter and acceleration transducer verifies the correctness of shock response measurement result, the height
The adjoint change of temperature field of fast thermal imaging system face space structure testpieces impact response carries out contactless field measurement, for dividing
The influence of eutectoid temperature field variation impact response.
Shown in referring to Fig.1, the acceleration transducer uses the higher piezoresistance type acceleration sensor of resonance frequency, avoids
High-frequency percussion causes acceleration transducer to resonate.
The sampling bandwidth of Laser Doppler Velocimeter is by being determined a point method for optimization, S1, it is first determined higher
Sampling bandwidth f1 and lower sampling bandwidth f2, take its mean value f3=(f1+f2)/2；S2 compares and samples bandwidth using mean value
The speed signal that f3 is measured and the similarity using the f1 and f2 speed signal measured；S3, the speed signal measured according to f3
The speed signal measured with use f1 is more close, continues to take sampling bandwidth to be f4=(f1+f3)/2, conversely, taking sampling bandwidth
For f4=(f2+f3)/2；S4 continues to repeat step S2 and step S3, until using mean value sampling bandwidth and using higher sampling
The speed signal that bandwidth or lower sampling bandwidth measure is consistent, that is, determines that mean value sampling bandwidth is Laser Doppler Velocimeter
Sample bandwidth.
Referring to shown in Fig. 2, data collection system hardware platform can provide 32 channel moduluses by using four LTC2175 and turn
It changes, single channel maximum sample rate can reach 100MS/s, resolution ratio 14bit, using AD9517-3 phaselocked loop by SPI to adopting
Sample frequency carries out stability contorting, and quick storage may be implemented in two 16GB DDR memory bars, and ADC control module is used to control each
The switch in channel, storage control are realized between two memories by memory interface and 32bit data/address bus and address bus
Exchange, high-speed data passes to Virtex 1 by Virtex-6, passes to computer through PCIe bus after handling by DSP.
Data Collection Software platform include communication module, acquisition module, control module, UI module and speed/plus
Rate conversion module, for realizing the acquisition, communication and human-computer interaction function of data.
Control module is internally provided with triggering clock T-Clk, and each sampling channel is according to requiring sample rate respectively in T-Clk
Different sampling period failing edge triggering, and carry out feeding back to be aligned guaranteeing respectively with this by accurate sampling clock and T-Clk
Sensor measures the phase corresponding relationship of parameter.
Speed/acceleration conversion module filters high-frequency percussion response signal using adaptive-filtering, wavelet filtering etc.
Wave eliminates noise jamming, the overall characteristic of shock response is then considered, using data reconstruction technology, by discrete signal reconstruction
At unlimited continuous signal, then differential variation is carried out, so that the high-precision for realizing speed to acceleration is converted.
A kind of workflow of firer's shock response many reference amounts cooperative system is as follows: first gluing acceleration transducer
Point position, and reasonable placement Laser Doppler Velocimeter and high speed thermal imaging system are invested, point position and impact position are respectively aligned to
It sets, each measuring device is attached with each channel of data collection system hardware platform respectively, is at open state, is adjusted and is added
The parameters such as velocity sensor sample frequency, Laser Doppler Velocimeter sampling bandwidth, high speed thermal imaging system focal length, make each measuring device
In optimum Working, Data Collection Software platform triggers clock by the T-Clk being arranged in control module, controls number
Work is synchronized according to each channel of acquisition system hardware platform, so that acceleration, speed and temperature field signal are synchronized and be adopted
Collection, wherein the collected speed signal of Laser Doppler Velocimeter is converted to acceleration signal through speed/acceleration conversion module,
It is mutually verified with the collected acceleration signal of acceleration transducer, guarantees the accuracy of measurement, the acquisition of high speed thermal imaging system
To temperature field signal be used to carry out heat analysis in impact transmittance process, final collected signal is passed to through PCIe bus
Computer is stored and is further processed.
According to one embodiment of present invention, a kind of firer's shock response many reference amounts cooperative system, including data are surveyed
It measures device and data collection system, the data measurement unit includes acceleration transducer, Laser Doppler Velocimeter and high speed
Thermal imaging system, the data collection system include acquisition system hardware platform and acquisition system software platform, data acquisition system
Each channel sensor that system controls the measuring device realizes synchronous acquisition, and the test data measured again deposited by acquired system
Storage.
According to one embodiment of present invention, the acceleration transducer is bonded on space structure testpieces to acceleration
The measurement of contact point is carried out, the Laser Doppler Velocimeter alignment point position carries out contactless point to speed and measures, institute
It states the adjoint change of temperature field of high speed thermal imaging system face space structure testpieces impact response and carries out contactless field measurement.Into
One step, the acceleration transducer uses the higher piezoresistance type acceleration sensor of resonance frequency, and high-frequency percussion is avoided to cause
Acceleration transducer resonates.Further, the sampling bandwidth of the Laser Doppler Velocimeter passes through to point optimization
Method is determined, S1, it is first determined higher sampling bandwidth f1 and lower sampling bandwidth f2 takes its mean value f3=(f1+
f2)/2；It is similar to the speed signal measured using f1 and f2 to compare the speed signal measured using mean value sampling bandwidth f3 by S2
Degree；S3, the speed signal measured according to f3 and the speed signal measured using f1 are more close, continue to take sampling bandwidth to be f4
=(f1+f3)/2, conversely, taking sampling bandwidth is f4=(f2+f3)/2；S4 continues to repeat step S2 and step S3, until using
It is consistent with the speed signal measured using higher sampling bandwidth or lower sampling bandwidth that mean value samples bandwidth, that is, determines that the mean value is adopted
Belt transect width is the sampling bandwidth of Laser Doppler Velocimeter.
According to one embodiment of present invention, the data collection system hardware platform can by using four LTC2175
32 channel analog-to-digital conversions are provided, single channel maximum sample rate can reach 100MS/s, and resolution ratio 14bit is locked using AD9517-3
Phase ring carries out stability contorting to sample frequency by SPI, and quick storage, ADC control may be implemented in two 16GB DDR memory bars
Module is used to control the switch in each channel, and storage control is real by memory interface and 32bit data/address bus and address bus
Exchange between existing two memories, high-speed data passes to Virtex-5 by Virtex-6, total through PCIe after being handled by DSP
Line passes to computer.The Data Collection Software platform includes communication module, acquisition module, control module, UI module
And speed/acceleration conversion module, for realizing the acquisition, communication and human-computer interaction function of data.In the control module
Portion is provided with triggering clock T-Clk, and each sampling channel is according to requiring sample rate respectively under the Different sampling period of T-Clk
Drop carries out feeding back to be aligned guaranteeing that each sensor measures the phase of parameter with this by accurate sampling clock along triggering with T-Clk
Position corresponding relationship.The speed/acceleration conversion module is using adaptive-filtering, wavelet filtering etc. to high-frequency percussion response signal
It is filtered, eliminates noise jamming, the overall characteristic of shock response is then considered, using data reconstruction technology, by discrete letter
It number is reconstructed into unlimited continuous signal, then carries out differential variation, to realize the high-precision conversion of speed to acceleration.
Shown in the drawings of some block diagrams and/or flow chart.It should be understood that some sides in block diagram and/or flow chart
Frame or combinations thereof can be realized by computer program instructions.These computer program instructions can be supplied to general purpose computer,
The processor of special purpose computer or other programmable data processing units, so that these instructions are when executed by this processor can be with
Creation is for realizing function/operation device illustrated in these block diagrams and/or flow chart.
Therefore, the technology of the disclosure can be realized in the form of hardware and/or software (including firmware, microcode etc.).Separately
Outside, the technology of the disclosure can take the form of the computer program product on the computer-readable medium for being stored with instruction, should
Computer program product uses or combines instruction execution system for instruction execution system (for example, one or more processors)
It uses.In the context of the disclosure, computer-readable medium, which can be, can include, store, transmitting, propagating or transmitting instruction
Arbitrary medium.For example, computer-readable medium can include but is not limited to electricity, magnetic, optical, electromagnetic, infrared or semiconductor system,
Device, device or propagation medium.The specific example of computer-readable medium includes: magnetic memory apparatus, such as tape or hard disk
(HDD)；Light storage device, such as CD (CD-ROM)；Memory, such as random access memory (RAM) or flash memory；And/or wired/
Wireless communication link.
Above detailed description has elaborated that firer impacts ground face mould by using schematic diagram, flow chart and/or example
Numerous embodiments of quasi- experimental rig.It include one or more functions and/or behaviour in this schematic diagram, flow chart and/or example
In the case where work, it will be understood by those skilled in the art that each function and/or operation in this schematic diagram, flow chart or example
It can be by various structures, hardware, software, firmware or substantially their any combination is come individually and/or common realization.One
In a embodiment, if the stem portion of theme described in embodiment of the disclosure can by specific integrated circuit (ASIC), scene
Programming gate array (FPGA), digital signal processor (DSP) or other integrated formats are realized.However, those skilled in the art
It should be understood that some aspects of embodiments disclosed herein can equally be realized in integrated circuit on the whole or partly
In, the one or more computer programs for being embodied as running on one or more computer are (for example, be embodied as at one or more
The one or more programs run in platform computer system), it is embodied as run on the one or more processors one or more
A program (for example, being embodied as the one or more programs run in one or more microprocessors), is embodied as firmware, or
Substantially be embodied as any combination of aforesaid way, and those skilled in the art are according to the disclosure, will be provided with design circuit and/
Or the ability of write-in software and/or firmware code.In addition, it would be recognized by those skilled in the art that the machine of theme described in the disclosure
System can be distributed as the program product of diversified forms, and no matter actually be used to execute the signal bearing medium of distribution
How is concrete type, and the exemplary embodiment of theme described in the disclosure is applicable in.The example of signal bearing medium includes but unlimited
In: recordable-type media, such as floppy disk, hard disk drive, compact-disc (CD), digital versatile disc (DVD), digital magnetic tape, computer
Memory etc.；And transmission type media, such as number and/or analogue communication medium are (for example, optical fiber cable, waveguide, wire communication chain
Road, wireless communication link etc.) ".
The present invention is described referring to exemplary embodiment.It will become apparent, however, that those skilled in the art retouch above-mentioned
Various selectable variations and modifications can be apparent under the introduction stated.Thus, the present invention includes to fall into appended claims
All selectable variations and modifications within spirit and scope.It is emphasized that can be carried out to above-described embodiment many
Change and modification, element therein will be understood as among other acceptable examples.Herein, all modifications and change
Change example to be intended to be included in the scope of the present disclosure.Description above-mentioned shows the details of some embodiments.However, should manage
Solution, no matter how above content is described in detail in text or attached drawing, can be implemented in numerous ways device and method.Institute as above
It states, it is noted that the specific term used when describing certain features or aspect of the invention is not construed as meaning term
Herein redefine for be restricted to include device and method associated with term features or aspect it is any specific
Characteristic.
Claims (9)
1. a kind of firer's shock response many reference amounts cooperative system, comprising:
Data measurement unit, the data measurement unit include the sensor in multiple channels, are tested for measuring in space structure
Shock response on part；With
Data collection system, the data collection system control the sensor in multiple channels of the measuring device to synchronize
Ground acquires data and stores the collected data of institute,
It is characterized in that, the data measurement unit includes:
Acceleration transducer, the acceleration transducer, which is bonded on space structure testpieces, carries out the survey of contact point to acceleration
Amount；
Laser Doppler Velocimeter, the Laser Doppler Velocimeter alignment point position carry out contactless point to speed and survey
Amount；With
High speed thermal imaging system, the high speed thermal imaging system change of temperature field adjoint to space structure testpieces impact response carry out non-
Contact field measurement.
2. firer's shock response many reference amounts cooperative system according to claim 1, which is characterized in that the acceleration
Sensor uses the higher piezoresistance type acceleration sensor of resonance frequency, avoids high-frequency percussion that acceleration transducer is caused to occur altogether
Vibration.
3. firer's shock response many reference amounts cooperative system according to claim 1, which is characterized in that the laser is more
For the general sampling bandwidth for strangling tachymeter by being determined to a point method for optimization, the method for described pair point of optimization includes following step
It is rapid:
S1, it is first determined higher sampling bandwidth f1 and lower sampling bandwidth f2 takes its mean value f3=(f1+f2)/2；
It is similar to the speed signal measured using f1 and f2 to compare the speed signal measured using mean value sampling bandwidth f3 by S2
Degree；
S3, the speed signal measured according to f3 and the speed signal measured using f1 are more close, continue to take the sampling bandwidth be
F4=(f1+f3)/2, conversely, taking sampling bandwidth is f4=(f2+f3)/2；
S4 continues to repeat step S2 and step S3, until using mean value sampling bandwidth with use higher sampling bandwidth or lower adopt
The speed signal that belt transect width measures is consistent, that is, determines that mean value sampling bandwidth is the sampling bandwidth of Laser Doppler Velocimeter.
4. firer's shock response many reference amounts cooperative system according to claim 1, which is characterized in that the data are adopted
Collecting system includes:
Acquisition system hardware platform；With
Acquisition system software platform, for realizing the acquisition, communication and human-computer interaction function of data.
5. firer's shock response many reference amounts cooperative system according to claim 4, which is characterized in that the data are adopted
Collecting system hardware platform can provide 32 channel analog-to-digital conversions by using four LTC2175, and single channel maximum sample rate can reach
100MS/s, resolution ratio 14bit, using AD9517-3 phaselocked loop by SPI to sample frequency carry out stability contorting, two
Quick storage may be implemented in 16GB DDR memory bar, and ADC control module is used to control the switch in each channel, and storage control is logical
The exchange between memory interface and 32bit data/address bus and address bus two memories of realization is crossed, high-speed data is by Virtex-
6 pass to Virtex-5, pass to computer through PCIe bus after handling by DSP.
6. firer's shock response many reference amounts cooperative system according to claim 4, which is characterized in that the data are adopted
Collecting system software platform includes:
Communication module；
Acquisition module；
Control module；
UI module；With
Speed/acceleration conversion module.
7. firer's shock response many reference amounts cooperative system according to claim 6, it is characterised in that: the control mould
Block is internally provided with triggering clock T-Clk, and each sampling channel is according to requiring sample rate respectively in the Different sampling period of T-Clk
Failing edge triggering, and carry out feeding back to be aligned by accurate sampling clock and T-Clk guaranteeing that each sensor measures parameter with this
Phase corresponding relationship.
8. a kind of firer's shock response many reference amounts cooperative system according to claim 6, it is characterised in that: the speed
Degree/acceleration conversion module is filtered high-frequency percussion response signal using adaptive-filtering, wavelet filtering etc., eliminates noise
Then interference considers the overall characteristic of shock response, using data reconstruction technology, by discrete signal reconstruction at unlimited continuous
Signal, then differential variation is carried out, so that the high-precision for realizing speed to acceleration is converted.
9. a kind of firer's shock response many reference amounts cooperative system, comprising:
Memory, for storing executable instruction；And
Processor, for executing the executable instruction stored in memory, to perform the following operations:
The measurement of contact point is carried out to acceleration by acceleration transducer；
Contactless point is carried out to speed by Laser Doppler Velocimeter to measure；
Contactless field measurement is carried out by the adjoint change of temperature field of high speed thermal imaging system impact response；
Analog-to-digital conversion is carried out by data collection system；
It carries out feeding back to be aligned with T-Clk by sampling clock guaranteeing that each sensor measures the phase corresponding relationship of parameter with this；
High-frequency percussion response signal is filtered using adaptive-filtering, wavelet filtering etc. by speed/acceleration conversion module
Wave eliminates noise jamming, the overall characteristic of shock response is then considered, using data reconstruction technology, by discrete signal reconstruction
At unlimited continuous signal, then differential variation is carried out, so that the high-precision for realizing speed to acceleration is converted.
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