CN103491303A - Recording device for images of high-speed movement process - Google Patents
Recording device for images of high-speed movement process Download PDFInfo
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Abstract
The invention discloses a recording device for images of a high-speed movement process. The recording device for the images of the high-speed movement process comprises a front-end optical coupling module, a strobing type proximity focusing image intensifier, a strobing time sequence trigger and control module, a strobing high-voltage pulse generation module, a rear-end optical coupling module, a CCD image recording module and a main control computer, wherein images of a detected high-speed movement object are formed on a photocathode of the strobing type proximity focusing image intensifier through the front-end optical coupling module, the images on the photocathode are controlled by the strobing high-voltage pulse generation module to form sequential framing images of the high-speed movement object on a fluorescent screen of the strobing type proximity focusing image intensifier, the sequential framing images are coupled to the CCD image recording module through the rear-end optical coupling module, digital images are output, and a framing record of the movement process of the shot object is accomplished. The recording device for the images of the high-speed movement process can provide high-quality digitized images for research of ultra-fast processes of shock wave and detonation physical tests, analysis of trajectories of conventional weapon projectiles, material micro-jet and interface instability, track recording of high-speed flying objects and the like.
Description
Technical field
The invention belongs to high-speed photography device and technical field, relate to a kind of can be in piece image the complete high speed optoelectronic framing imaging device that presents the moving object motion process, be exactly to utilize the adjustable sequence high-voltage pulse string of pulse number, pulse duration and pulse interval to drive single gating formula proximity-focus image intensifier photocathode to realize the recording image to the moving object motion process specifically.
Background technology
High speed framing camera work is a kind of important method of testing of research high-speed motion process, the difference that it is the most basic with general camera work, be exactly that it has high time resolving power, can follow the tracks of generation and the development of quick variation or motion process, and record.High speed framing camera work has temporal resolution high (time for exposure is short), photographic frequency advantages of higher, but the image visual pattern ground of its shooting reflection high speed transient process development trend, thereby, for genesis mechanism and the rule of research high-speed motion phenomenon provides authentic data, there is the irreplaceable advantage of other means of testing.
High speed framing camera work can be divided into optical-mechanical structure high-speed framing camera work and high speed optoelectronic framing camera work by imaging mode.The former adopts the High Rotation Speed speculum imaging of electronic or pneumatic control usually, because descending, High Rotation Speed speculum job stability under certain rotating speed even can deform, it is very difficult that this causes further improving photographic frequency, the time resolution of current every width image is in the submicrosecond magnitude, and photographic frequency is 10
6about width/second; In addition, the high-speed photography device structure of optical-mechanical structure is complicated, bulky, complex operation, also greatly limits its application.For high speed photography time resolution and the photographic frequency that overcomes the optical-mechanical structure is difficult to the shortcoming further improved, high speed optoelectronic framing camera work is arisen at the historic moment, and mainly comprises that microwave transmission type photoelectricity framing camera work, crosspoint scan many light hurdle framing imaging technique, Multi-channel optical framing photoelectricity camera work.
At first microwave transmission type photoelectricity framing camera work adopts optics pin-hole imaging method moving object target image planes to be divided into to a plurality of image planes of separating on space, be manufactured with microwave transmission line on the microchannel plate of the proximity-focus image intensifier of rear end, a plurality of imaging image planes of being separated by optics pin-hole imaging method distribute along microwave transmission line, when a high-voltage pulse transmits along microwave transmission line, a plurality of image planes that distribute along microwave transmission line will be by this pulse gated imaging successively, thereby obtains the moving target image planes at document image in the same time not.Because the resulting motion process image time interval of the method is relevant with the transmission time of pulse edge microwave transmission line, usually at tens of picosecond magnitudes, so this type systematic can't obtain the framing document image in nanosecond in the above time interval.
Crosspoint is scanned many light hurdle framing imaging technique and is adopted flying-spot tube electronic deflection mode to realize the imaging of high speed framing, its single width time resolution can reach magnitude of subnanosecond, but its major defect is time resolution to be associated with the picture interval, can't realize independent regulation, and its omnidistance writing time only have several nanoseconds, can't meet motion process several records in microsecond or millisecond time range.
At first Multi-channel optical framing photoelectricity camera work adopts prism or plane light splitting mode that moving object target image planes are divided into to the image planes of separating on a plurality of spaces, then each image planes is carried out the high-speed strobe imaging with a gating formula proximity-focus image intensifier, finally again by the CCD record.This kind of technology record the picture number by light splitting after image planes quantity and corresponding gating formula proximity-focus image intensifier number determine.Count the adjusting of nanosecond to the above time for exposure of millisecond although can realize single width, application is also very wide, but this technology has adopted complicated optics beam splitting system that testee is imaged on different image intensifiers, image deformation and the aberration in design, unavoidably because of the inconsistency of each beam splitting system, introduced can not show the movement locus of testee on same width image.In addition, each separates image planes and needs a corresponding gating formula proximity-focus image intensifier, certainly will increase system complexity and cost, has reduced the stability of a system and reliability.
Utilize in addition the modes such as selfoc lens array spectroscopic imaging, laser pulse illumination imaging in high speed framing imaging technique.Selfoc lens array spectroscopic imaging basic principle and Multi-channel optical framing photoelectric camera shade are same, are also the target image planes to be divided into to the image planes of separating on a plurality of spaces then utilize rear end CCD to be recorded as picture; The laser pulse illumination imaging utilizes pulse laser to illuminate target and forms short exposure time, then utilize CCD to be recorded as picture, this high speed imaging technology can only be darker at background environment light place application, and higher to the hot spot uniformity requirement of laser beam, otherwise it is inhomogeneous to expose, and image quality is poor.
Summary of the invention
The weak point existed for above-mentioned prior art, main purpose of the present invention is that proposition is a kind of simple in structure, only use a passage optical coupled module and a gating formula proximity-focus image intensifier, just can realize the high-speed motion process is carried out the device of quick picture frame record.Because this device is not used the multichannel beam splitting system, the image deformation of having introduced while having avoided multi-channel image and aberration, and also it realizes the repeatedly imaging to moving target with very simple structure.The time for exposure of each imaging, repeatedly the imaging interval also can be in ten nanoseconds to adjustable more than millisecond in several nanoseconds to adjustable more than millisecond.The These characteristics of this device makes it be specially adapted to time range at a recording image that arrives millisecond magnitude motion process tens of nanoseconds.
The present invention adopts following technical scheme: a kind of high-speed motion procedural image tape deck, comprise front end optical coupled module, gating formula proximity-focus image intensifier, the triggering of gating sequential and control module, gating high-voltage pulse generation module, rear end optical coupled module, ccd image logging modle and main control computer, the output of described front end optical coupled module is connected with the input of gating formula proximity-focus image intensifier, and gating formula proximity-focus image intensifier outputs to rear end optical coupled module and outputs to main control computer by the ccd image logging modle; When described gating sequential triggering and control module complete with the main control computer communication, control the electromagnetic shutter in ccd image logging modle, the connection of gating high-voltage pulse generation module and front end optical coupled module, described gating high-voltage pulse generation module is connected with gating formula proximity-focus image intensifier.
In technique scheme, described front end optical coupled module comprises principal goods mirror, graticle, electromagnetic shutter and front relay objective, and the triggering of described gating sequential is connected with electromagnetic shutter with control module.
In technique scheme, described gating high-voltage pulse generation module adopts Complementary MOSFET output and driving circuit structure thereof, and described circuit comprises the detection of action of low-voltage pulse low and high level and oscillating circuit, mosfet driver, driving pulse shaping and drives accelerating circuit, a pair of P-channel field-effect transistor (PEFT) pipe and N channel field-effect pipe.
In technique scheme, described gating sequential triggers and the circuit structure of control module comprises communication interface module, delay counter, high frequency clock module, clock counter, the CCD counting time of integration and discrimination module, a plurality of comparator and pulse synthesis module.
In technique scheme, said method comprising the steps of:
Step 1: initialization data, set the indices of ccd image logging modle, the triggering of gating sequential and control module by main control computer, and wait for the external trigger input signal;
Step 2: tested moving target is imaged onto on the photocathode of gating formula proximity-focus image intensifier through front end optical coupled module, and this photocathode is connected with gating high-voltage pulse generation module;
Step 3: when triggering signal arrives outside, the gating sequential triggers and control module control gating high-voltage pulse generation module output sequence high-voltage pulse, makes target object be imaged onto image on photocathode by sequence gating successively, converts electronic image to;
Step 4: after the high pressure on the microchannel plate of electronic image through being applied to gating formula proximity-focus image intensifier accelerates, bombardment forms the object of which movement procedural image be associated with the moving object position on the phosphor screen of gating formula proximity-focus image intensifier;
Step 5: image is coupled to the ccd image logging modle through rear end optical coupled module and is undertaken exporting after integration by setting-up time, by the ethernet communication interface, image transmission is shown or processes to main control computer.
In technique scheme, described gating sequential triggers and control module control gating high-voltage pulse generation module output amplitude at+60V to the high speed train pulse string alternately changed between-180V.
In technique scheme, output normality voltage is+60V that turning-on voltage is-180V.
In technique scheme, the described controlled high speed train pulse string alternately changed is realized the repeatedly opening and closing of gating formula proximity-focus image intensifier, by motive target imaging at the fluoroscopic diverse location of gating formula proximity-focus image intensifier.
Described gating formula proximity-focus image intensifier is comprised of photocathode, microchannel plate and the phosphor screen that can repeat at a high speed gating, under the sequence high-voltage pulse is controlled, the movement destination image high-speed strobe is imaged on its phosphor screen, the narrowest gating time of this gating formula proximity-focus image intensifier single can reach for ten nanoseconds, and the longest gating time can reach more than ten milliseconds.
Described gating high-voltage pulse generation module is comprised of action of low-voltage pulse shaping unit, low-voltage driving and symmetrical high frequency field effect transistor.Its Main Function is pulse that produce to control gating formula proximity-focus image intensifier, be specially by the 5V pulse signal, controlled+60V is to the high pressure train pulse of-180V peak-to-peak value.This high pressure train pulse normality output level is+60V, pulse output low level-180V, export the shortest low level pulse width 10ns, more than the longest low level pulse width 10ms, the interval between output sequence pulse number, each pulse duration and pulse all can be triggered and the control module setting by the gating sequential.
Described gating sequential triggers and control module is comprised of communication interface, delay counter, high frequency clock, clock counter, multichannel comparator, the CCD counting time of integration and differentiation, the synthetic several parts of pulse.Communication interface completes the communication of this gating sequential triggering and control module and main control computer, the time that the pulse of delay counter determining sequence produces, high frequency clock is as the clock reference of system control work, clock counter and multichannel comparator determine to produce width and the number of train pulse, CCD counts and differentiates the integral counting time that determines rear end ccd image logging modle the time of integration, and pulse is synthetic to be mainly used to the synthetic road output of the pulse of a plurality of comparator outputs.Wherein, it is even higher that high frequency clock can be increased to 200MHz by the inner phase-locked loop of FPGA, and the parts such as all the other delay counters, clock counter and multichannel comparator also all can realize in a slice FPGA.
Described ccd image logging modle has external trigger and controls function, guarantee that CCD starts the fluorescent screen images of gating formula proximity-focus image intensifier is carried out to the integration record before the pulse of gating high-voltage pulse generation module output sequence, integration length writing time is triggered by the gating sequential and control module determines according to the rising time that generates last train pulse.
Enforcement the invention has the beneficial effects as follows: first, adopt single channel optical coupled module simple in structure, overcome image deformation and aberration that Multi-channel optical framing system adopts the multiplex optical coupling module to introduce, and whole tape deck volume is dwindled greatly, be convenient for carrying and use; The second, adopt high-speed strobe formula proximity-focus image intensifier to carry out the framing imaging, the single width time for exposure is very short, and the shortest 10ns that reaches effectively suppresses the image dynamic fuzzy in shooting process; The 3rd, the time for exposure is adjustable on a large scale as required, and the hatch control time 10ns of single width, more than the longest gate time 10ms, meets the shooting demand of different writing time of high-speed motion process; The 4th, only with a gating formula proximity-focus image intensifier and a CCD, realize the repeatedly framing imaging to moving target, each imaging time for exposure is controlled by the respective pulses width, and exposure time interval was controlled by the pulse spacing, framing imaging number of times is determined by the train pulse number, controls conveniently; The 5th, only by a gating formula proximity-focus image intensifier, output image brightness irregularities while avoiding using a plurality of gating formula proximity-focus image intensifier; The 6th, adopt ccd image to gather the way of output, complete being recorded on piece image by the motion process of moving object, make the operator can analyze intuitively, easily kinetic characteristic and directly carry out follow-up Digital Image Processing, improves conventional efficient; The 7th, system gating sequential triggers and control module adopts the design of a slice fpga logic device to realize, simple in structure, integrated level is high, the sequencing control precision can reach 5ns, and can realize controlling the startup of gating high-voltage pulse, ccd image logging modle and dwell time etc. are synchronous simultaneously.
Device involved in the present invention has broad application prospects in ultrahigh speed motion process field tests, can provide high-quality digitized image for the research of the ultrafast processes such as track record of shock wave and detonation physics test, the trajectory analysis of conventional weapon bullet, the micro-spray of material and interface unsteadiness, high-speed flight object fully.
The accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is apparatus structure composition frame chart of the present invention;
Fig. 2 is framing image-forming principle schematic diagram of the present invention;
Fig. 3 is gating high-voltage pulse generation module composition frame chart in the present invention;
Fig. 4 is mesohigh pulse generation module working timing figure of the present invention;
Fig. 5 is that in the present invention, the gating sequential triggers and the control module composition frame chart;
Fig. 6 is that in the present invention, the gating sequential triggers and the control module working timing figure.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
The main assembly block diagram of a kind of high-speed motion procedural image tape deck simple in structure of the present invention as shown in Figure 1, comprises front end optical coupled module, gating formula proximity-focus image intensifier, high-voltage suppling power, gating high-voltage pulse generation module, the triggering of gating sequential and control module, rear end optical coupled module, ccd image logging modle and main control computer totally eight parts.Its course of work is as follows: visual field, moving target being shot place is imaged onto on the photocathode of gating formula proximity-focus image intensifier through front end optical coupled module, this photocathode is connected with gating high-voltage pulse generation module, when gating high-voltage pulse generation module output voltage be+during 60V, target object is imaged onto image on photocathode not for being strobed, and only has a small amount of stray light bombardment to form background noise at the phosphor screen of gating formula proximity-focus image intensifier; When gating high-voltage pulse generation module voltage be-during 180V, the image that target object is imaged onto on photocathode is strobed, this image is converted to electronic image by photocathode, and after the high pressure on the microchannel plate through being applied to gating formula proximity-focus image intensifier accelerates, bombardment forms the image be associated with the moving object position on the phosphor screen of gating formula proximity-focus image intensifier.In above-mentioned imaging process, by presetting the gating sequential, trigger and control module, thereby control gating high-voltage pulse generation module output amplitude at+60V to the high speed train pulse string alternately changed between-180V, just can realize the repeatedly opening and closing to gating formula proximity-focus image intensifier, open all can be by motive target imaging at the fluoroscopic diverse location of gating formula proximity-focus image intensifier at every turn, this image that records the moving target movement position is coupled to the ccd image logging modle through rear end optical coupled module and carries out integration output, by Ethernet interface, image transmission is arrived to main control computer, can on computer display, show that a width characterizes the high speed framing photographs of moving object motion process.
For making system work process more clear, shown in Fig. 2, be imaged as example with the double exposure framing its operation principle is further elaborated.Suppose the direction motion of object to make progress perpendicular to the register system central optical axis, at t
1constantly, the position of object on the moving target image planes is X
1, it is imaged onto on gating formula proximity-focus image intensifier photocathode image planes and corresponds to χ through front end optical coupled module
1at this moment the gating sequential triggers and control module is controlled gating high-voltage pulse generation module output voltage by the work schedule set and is-the low level short pulse of 180V, gating formula proximity-focus image intensifier photocathode under this pulsed drive switch once, object is at photocathode χ
1place's image planes are electronics through proximity-focus image intensifier photocathode opto-electronic conversion, by the proximity-focus image intensifier microchannel plate, double and form χ on its phosphor screen
1' as, these image planes are imaged onto the CCD image planes through rear end optical coupled module again and form the image planes X be associated with the target travel object space
1'; Equally, at t
2constantly, the position of object on the moving target image planes is X
2, gating formula proximity-focus image intensifier is opened once equally under gating high-voltage pulse generation module is controlled again, at the same image planes X be associated with the target travel object space that forms of rear end CCD image planes
2'.Due in said process, rear end CCD is always in the integration imaging state, so moving target is at the imaging X of CCD image planes place
1' and X
2' in a picture, recorded, as long as rationally set interval according to the movement velocity of moving object, make the image of twice record not overlapping, just realized on same picture twice shooting of object is equivalent to target object has been carried out to twice framing imaging.In like manner, also can realize repeatedly framing imaging according to above-mentioned principle.
In above-mentioned imaging process, the sequence high speed and high pressure pulse that is applied to gating formula proximity-focus image intensifier photocathode has the decision meaning to imaging time for exposure (being to differentiate the time) and the time interval.This sequence high speed and high pressure pulse need to solve three difficult points: the one, and this high-speed pulse of requirement is pressed onto negative voltage and negative electricity from positive electricity, and to be pressed onto the transfer process of positive voltage very fast, and normality voltage is in+60V left and right, opens rear voltage in-180V left and right; The 2nd, the negative pulse width that form can be regulated according to each time for exposure from ten nanoseconds to ten millisecond wide region; The 3rd, the sequence negative pulse interval that form also can be as required from regulating to tens of milliseconds of wide regions tens of nanoseconds.The domestic research formed about the high speed subnanosecond pulse is a lot, but major part is all to utilize the snowslide pipe to form, and pulse voltage is usually upper kilovolt of left and right, and pulse duration can't realize regulating on a large scale, and interpulse period is in the microsecond magnitude.
The problem produced for solving above-mentioned sequence high speed and high pressure pulse, the present invention adopts the Complementary MOSFET shown in Fig. 3 (insulating gate type field effect tube) output and driving circuit structure thereof in specific design, the detection of action of low-voltage pulse low and high level and oscillating circuit, mosfet driver, driving pulse shaping and driving accelerating circuit, a pair of P-channel field-effect transistor (PEFT) pipe and N channel field-effect pipe, consists of.The action of low-voltage pulse low and high level detects and oscillating circuit is realized input low voltage control pulse low and high level is detected, its function as shown in Figure 4, when the action of low-voltage pulse control inputs is low level (0V), low voltage control pulse output 1 output oscillating impulse, the low voltage control pulse is exported 2 failures of oscillations and is kept high level; Otherwise, when the action of low-voltage pulse control inputs is high level (5V), the low voltage control pulse is exported 1 failure of oscillations and is kept high level, low voltage control pulse output 2 output oscillating impulses.The complementary oscillating impulse of two-way is alternately opened, is turn-offed through the amplification of mosfet driver electric current, high voltage capacitor coupling, driving pulse shaping and a pair of P-channel field-effect transistor (PEFT) pipe of accelerating circuit rear drive and N channel field-effect pipe respectively.As shown in Figure 4, when the action of low-voltage pulse control inputs is low level, the P channel mosfet is open-minded for the specific works sequential, and N-channel MOS FET turn-offs, final high-voltage pulse output+60V high level; When the action of low-voltage pulse control inputs is high level, the P channel mosfet turn-offs, and N-channel MOS FET is open-minded, and final high-voltage pulse output-180V low level forms the high-voltage bipolar pulse output of being controlled by the front end gating pulse.Simultaneously, the width of this high-voltage pulse and pulse spacing were determined by width and the pulse spacing of the pulse of front end low voltage control.
For high-speed moving object, obtain section zone, interested centre in its motion process, need to be controlled on demand the zero-time of the exposure of framing imaging repeatedly, number of times, exposure time interval etc.; Simultaneously, also to each imaging time for exposure width, be set for the different motion process.The present invention adopts the gating sequential to trigger and control module completes above-mentioned functions.
The triggering of gating sequential and control module structure as shown in Figure 5, mainly comprise communication interface module, delay counter, high frequency clock module, clock counter, the CCD counting time of integration and discrimination module, a plurality of comparator and seven functional parts of pulse synthesis module.The FPGA that each functional part is all XC3SD1800A-4CSG484I at a slice XLINX SPANT of company serial model No. is inner to be realized, greatly improve integrated level and the reliability of image recording structure, and the embedded clock multiplier of this chip and administration module, more than work clock can reach 200MHz, make each imaging time for exposure and imaging interval degree of regulation can reach 5ns.
The gating sequential triggers and the control module course of work is: at first the main control computer information such as time interval of time, multiexposure, multiple exposure of delay value, each exposure and number of times of system being exposed first according to user's setting parameter are sent to communication interface module; Communication interface module calculates count pulse number corresponding to exposure delay value according to pre-set parameter and sends to delay counter, calculate corresponding count pulse number according to the time of each exposure and the time interval of multiexposure, multiple exposure (being train pulse width, interval) and send to corresponding comparator 1 to comparator N, calculate corresponding pulse count value send to CCD and count and discrimination module time of integration CCD time of integration according to total exposure time length gauge repeatedly, according to total exposure frequency, convert the operating state that the train pulse number is set the pulse synthesis module to; After communication interface module completes the setting of other each module, delay counter, clock counter, the CCD counting time of integration and discrimination module, pulse synthesis module are carried out to a zero clearing and reset, and wait for the arrival of external trigger input signal.
More clear for the course of work that makes the triggering of gating sequential and control module, shown in Fig. 6, with 4 exposure framings, be imaged as example, its course of work is further elaborated.Fig. 6 medium-high frequency clock work frequency is 200MHz, is the benchmark job clock of each counter in module.As previously mentioned, after communication interface module completes the setting and zero clearing to other each module, CCD control signal and the output of low pressure train pulse are low level (0V).After external trigger input signal rising edge arrives, delay counter is started working, when counting down to set point T
1the time, delay counter output enable signal enabling clock counter, pulse synthesis module and CCD count and discrimination module the time of integration, and now CCD counts and discrimination module output high level the time of integration, controls the ccd image logging modle and starts the integration record.When clock rolling counters forward value is T
2the time, consistent with comparator 1 set point, comparator 1 output one burst pulse, when the pulse synthesis module is caught this burst pulse carry out the level of low pressure train pulse 0V upset to 5V; Clock counter continues accumulated counts, through T
3after individual clock count, its value is consistent with comparator 2 set points, and comparator 2 output one burst pulses are carried out the level of low pressure train pulse 5V upset to 0V again when the pulse synthesis module is caught this burst pulse, and forming a width is T
3the pulse of individual counting clock.The like, when clock rolling counters forward value is respectively T
4, T
4+ T
5, T
6, T
6+ T
7, T
8, T
8+ T
9the time, corresponding comparator is all exported a burst pulse, the pulse synthesis module at each burst pulse place all to the low pressure train pulse output carry out a level upset, thereby forming a pulse spacing is respectively T
4-(T
3+ T
2), T
6-(T
5+ T
4), T
8-(T
7+ T
6), pulse duration is respectively T
3, T
5, T
7, T
9the train pulse string, just can carry out independent adjustment to pulse duration and the pulse spacing of this train pulse string by the value of adjusting comparator.When the pulse number in the train pulse string equates with the setting pulse number of pulse synthesis module, the pulse synthesis module stops the differentiation to follow-up comparator output burst pulse, keeps output low level to take and start next time.In addition, when clock rolling counters forward value be T
10the time, CCD counts and the discrimination module output low level time of integration, and control the ccd image logging modle and stop the integration record, and the reset pulse synthesis module, complete the picture frame recording process one time.
In the present invention, for making the ccd image logging modle effectively record gating formula proximity-focus image intensifier fluorescent screen images, need to be dropped in the CCD effective integral time phosphor screen output image time by sequencing control, therefore, need to select to there is the CCD acquisition module that external trigger is controlled, and require CCD time of integration to trigger and the high level pulse width adjusting of the CCD control signal that control module be exported with above-mentioned gating sequential.
In addition, in actual applications, for guaranteeing multiexposure, multiple exposure framing image quality, moving object and background color preferably can have higher contrast, or coordinate the pulsed light irradiating object of high repetition can greatly improve image definition and contrast in the present invention.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosed in this manual, and the arbitrary new method disclosed or step or any new combination of process.
Claims (8)
1. a high-speed motion procedural image tape deck, it is characterized by and comprise front end optical coupled module, gating formula proximity-focus image intensifier, the triggering of gating sequential and control module, gating high-voltage pulse generation module, rear end optical coupled module, ccd image logging modle and main control computer, the output of described front end optical coupled module is connected with the input of gating formula proximity-focus image intensifier, and gating formula proximity-focus image intensifier outputs to rear end optical coupled module and outputs to main control computer by the ccd image logging modle; When described gating sequential triggering and control module complete with the main control computer communication, control the electromagnetic shutter in ccd image logging modle, gating high-voltage pulse generation module and front end optical coupled module, described gating high-voltage pulse generation module is connected with gating formula proximity-focus image intensifier.
2. a kind of high-speed motion procedural image tape deck according to claim 1, it is characterized by described front end optical coupled module and comprise principal goods mirror, graticle, electromagnetic shutter and front relay objective, the triggering of described gating sequential is connected with electromagnetic shutter with control module.
3. a kind of high-speed motion procedural image tape deck according to claim 1, it is characterized by described gating high-voltage pulse generation module and adopt Complementary MOSFET output and driving circuit structure thereof, described circuit comprises the detection of action of low-voltage pulse low and high level and oscillating circuit, mosfet driver, driving pulse shaping and drives accelerating circuit, a pair of P-channel field-effect transistor (PEFT) pipe and N channel field-effect pipe.
4. a kind of high-speed motion procedural image tape deck according to claim 1, is characterized by that described gating sequential triggers and the circuit structure of control module comprises communication interface module, delay counter, high frequency clock module, clock counter, the CCD counting time of integration and discrimination module, a plurality of comparator and pulse synthesis module.
5. the recording method of a kind of high-speed motion procedural image tape deck according to claim 1 is characterized by and said method comprising the steps of:
Step 1: initialization data, set the indices of ccd image logging modle, the triggering of gating sequential and control module by main control computer, and wait for the external trigger input signal;
Step 2: tested moving target is imaged onto on the photocathode of gating formula proximity-focus image intensifier through front end optical coupled module, and this photocathode is connected with gating high-voltage pulse generation module;
Step 3: when triggering signal arrives outside, the gating sequential triggers and control module control gating high-voltage pulse generation module output sequence high-voltage pulse, makes target object be imaged onto image on photocathode by sequence gating successively, converts electronic image to;
Step 4: after the high pressure on the microchannel plate of electronic image through being applied to gating formula proximity-focus image intensifier accelerates, bombardment forms the object of which movement procedural image be associated with the moving object position on the phosphor screen of gating formula proximity-focus image intensifier;
Step 5: image is coupled to the ccd image logging modle through rear end optical coupled module and is undertaken exporting after integration by setting-up time, by the ethernet communication interface, image transmission is shown or processes to main control computer.
6. formation method according to claim 5, it is characterized by that described gating sequential triggers and control module control gating high-voltage pulse generation module output amplitude at+60V to the high speed train pulse string alternately changed between-180V.
7. formation method according to claim 6, the normality of output shown in it is characterized by voltage is+60V, turning-on voltage is-180V.
8. formation method according to claim 6, it is characterized by the described controlled high speed train pulse string alternately changed and realize the repeatedly opening and closing of gating formula proximity-focus image intensifier, by motive target imaging at the fluoroscopic diverse location of gating formula proximity-focus image intensifier.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079828A (en) * | 2014-06-30 | 2014-10-01 | 中国科学院西安光学精密机械研究所 | Low-light-level ultrafast high-repetition-frequency imaging detection device and method |
| CN104333349A (en) * | 2014-08-21 | 2015-02-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for ultra-high speed sequential control |
| CN106713733A (en) * | 2015-11-17 | 2017-05-24 | 清华大学 | Apparatus of recording object motion information and method thereof |
| CN107147378A (en) * | 2017-07-03 | 2017-09-08 | 中国工程物理研究院流体物理研究所 | Dual-pulse power supply and double-exposure photoelectricity framing camera |
| CN107734232A (en) * | 2017-11-07 | 2018-02-23 | 西北核技术研究所 | A kind of image-capturing method of ultrafast random physical process |
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
| CN111397536A (en) * | 2020-05-20 | 2020-07-10 | 西北核技术研究院 | Three-dimensional contour measuring method for penetration bullet hole of large-size reinforced concrete target plate |
| CN112433483A (en) * | 2020-09-03 | 2021-03-02 | 南京理工大学 | Time schedule controller based on multi-microprocessor structure |
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| CN115361506A (en) * | 2022-08-17 | 2022-11-18 | 中科微机电技术（北京）有限公司 | Control method of active pixel sensor, active pixel sensor and electronic device |
| CN116320803A (en) * | 2023-05-23 | 2023-06-23 | 苏州洞悉科技有限公司 | Driving device of image intensifier |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079828A (en) * | 2014-06-30 | 2014-10-01 | 中国科学院西安光学精密机械研究所 | Low-light-level ultrafast high-repetition-frequency imaging detection device and method |
| CN104079828B (en) * | 2014-06-30 | 2017-12-19 | 中国科学院西安光学精密机械研究所 | Low-light-level ultrafast high-repetition-frequency imaging detection device and method |
| CN104333349A (en) * | 2014-08-21 | 2015-02-04 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for ultra-high speed sequential control |
| CN104333349B (en) * | 2014-08-21 | 2017-04-19 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for ultra-high speed sequential control |
| CN106713733B (en) * | 2015-11-17 | 2022-08-09 | 清华大学 | Device and method for recording object motion information |
| CN106713733A (en) * | 2015-11-17 | 2017-05-24 | 清华大学 | Apparatus of recording object motion information and method thereof |
| CN107147378A (en) * | 2017-07-03 | 2017-09-08 | 中国工程物理研究院流体物理研究所 | Dual-pulse power supply and double-exposure photoelectricity framing camera |
| CN107734232A (en) * | 2017-11-07 | 2018-02-23 | 西北核技术研究所 | A kind of image-capturing method of ultrafast random physical process |
| CN108873595A (en) * | 2018-09-12 | 2018-11-23 | 中国空气动力研究与发展中心超高速空气动力研究所 | Light and shadowgraph imaging device before hypervelocity flight model |
| CN108873595B (en) * | 2018-09-12 | 2023-10-31 | 中国空气动力研究与发展中心超高速空气动力研究所 | Ultra-high speed flight model front light and shadow imaging device |
| CN111397536A (en) * | 2020-05-20 | 2020-07-10 | 西北核技术研究院 | Three-dimensional contour measuring method for penetration bullet hole of large-size reinforced concrete target plate |
| CN111397536B (en) * | 2020-05-20 | 2021-05-04 | 西北核技术研究院 | Three-dimensional contour measuring method for penetration bullet hole of large-size reinforced concrete target plate |
| CN112433483A (en) * | 2020-09-03 | 2021-03-02 | 南京理工大学 | Time schedule controller based on multi-microprocessor structure |
| CN112945204A (en) * | 2021-01-27 | 2021-06-11 | 西北核技术研究所 | Device and method for detecting framing images |
| CN115361506A (en) * | 2022-08-17 | 2022-11-18 | 中科微机电技术（北京）有限公司 | Control method of active pixel sensor, active pixel sensor and electronic device |
| CN115361506B (en) * | 2022-08-17 | 2024-05-24 | 中科微机电技术（北京）有限公司 | Control method of active pixel sensor, active pixel sensor and electronic equipment |
| CN116320803A (en) * | 2023-05-23 | 2023-06-23 | 苏州洞悉科技有限公司 | Driving device of image intensifier |
| CN116320803B (en) * | 2023-05-23 | 2023-07-25 | 苏州洞悉科技有限公司 | Driving device of image intensifier |
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