CN1149141A - Synchronous flashing instrument with high frequency series of short pulses - Google Patents
Synchronous flashing instrument with high frequency series of short pulses Download PDFInfo
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- CN1149141A CN1149141A CN 95111646 CN95111646A CN1149141A CN 1149141 A CN1149141 A CN 1149141A CN 95111646 CN95111646 CN 95111646 CN 95111646 A CN95111646 A CN 95111646A CN 1149141 A CN1149141 A CN 1149141A
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- capacitor
- discharge lamp
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Abstract
A synchronous stroboscope with high-frequency short pulse sequence can be used in synchronous lighting of high-speed photography or laser pump. It is composed of short pulse gas discharge lamp, n charge-discharge units with same structure and parallel to the short pulse gas discharge lamp, high-voltage charging power supply, pre-ionizating high-voltage power supply, high-voltage trigger pulse generator, synchronous trigger signal generator and n synchronous trigger amplifiers with same structure. Its advantages are very high flushing frequency (greater than 500000/s) and average power (greater than 5000000 W), less electric consumption and low cost.
Description
The present invention be a kind of be single many charging and discharging circuit of lamp high frequency synchronous flashing instrument of light source with the short pulse xenon lamp, be mainly used in the pumping of the synchronous lighting and the laser instrument of high-speed photography.
Existing is that the synchronous flashing instrument of light source roughly can be divided into two kinds with the pulse xenon lamp:
1. single lamp list discharge loop structure
(U.S.5115169, H05B41/32) middle employing is exactly single lamp list discharge loop to the United States Patent (USP) that Aoki obtained in 1992.As Fig. 1, unsteady flow boost rectifier 85 produces high direct voltage storage capacitor C is charged, charging is finished the back and is sent trigger pip by pulse producer 86 and be added on outside the fluorescent tube of pulse xenon lamp F after trigger circuit 87 amplifications, make gas generation ionization in the lamp, above-mentioned trigger pip makes on-off element K conducting simultaneously, so storage capacitor C to pulse xenon lamp F discharge, forms once flash of light, then charge once more, discharge, go round and begin again.Because the restriction of deionization time after charging rate and the pulse xenon lamp discharge, sort circuit can only work in the low-repetition-frequency state.
J.Jethwa can work in upper frequency in single lamp list charging and discharging circuit structure of report in 1974, as Fig. 2, and pre-ionization high-voltage power supply H.V
2Pass through resistance R
1, diode D
3Be added in the two ends of flashlamp F.Behind the K that closes a switch, step-up transformer T just exports High AC voltage, by diode D
4, resistance R
2Be added on the spark gap G, after spark gap G punctured, this voltage just was added in flashlamp F two ends and makes its puncture.At this moment pre-ionization high-voltage power supply H.V
2Just to flashlamp F discharge, make flashlamp F be in the pre-ionization state.Open controllable silicon Th then
1, high voltage charging power supply H.V
1Carry out resonant charging by inductance L to storage capacitor C, open controllable silicon Th at last
2, storage capacitor C forms once flash of light just to flashlamp F discharge, and subsequent is again charging, discharge, goes round and begins again.Because controllable silicon is withstand voltage lower, so for certain discharge energy, storage capacitor C is bigger, the duration of charging is long, has just limited the raising of frequency.(J.Jethwa，″A?ReliableHigh?Average?Power?Dye?Laser″，Applied?Physics，Vol.4，No.4，p299，Sep.1974)
There is the people to replace controllable silicon to improve charging/discharging voltage later on again with thyratron, reduce the storage capacitor amount to improve frequency, but since work period of single lamp list charging and discharging circuit equal the duration of charging and discharge time sum, and the duration of charging is subjected to the capacity limit of power supply, can not accomplish very short, for example reach 0.1 millisecond and just be not easy, and also be subjected to the restriction of its service factor as the thyratron of switch, its flashing rate can not be done very highly.
2. many many charging and discharging circuit of lamp structures
As Fig. 3, Crane kind-husky fourth video camera in, high voltage charging power supply H.V
1Respectively by current-limiting resistance R
1, R
2, R
3Deng to storage capacitor C
1, C
2, C
3Deng charging, then under the sequence trigger trigger action, storage capacitor C
1, C
2, C
3Be docile and obedient preface respectively to flashlamp F
1, F
2, F
3Discharge, so that three flashlamp are docile and obedient preface is luminous, glow frequency depends on the interval of trigger pip, glow frequency can be done very highly, but flashlamp different in this structure are in diverse location, and light angle can change, and this brings difficulty to data processing.(G.A. Jones work, Sheng Er translates in the town " high-speed photography ", P175～176, Shanghai science tech publishing house, 1959,3)
Purpose of the present invention is the shortcoming that overcomes above-mentioned prior art medium-high frequency synchronous flashing instrument structure, and a kind of flashing rate height is provided, and adopts low-cost high-speed switch, can obtain light angle and remain consistent synchronous flashing instrument with high frequency series of short pulses.
The structure of stroboscope of the present invention is called single many charge/discharge units of lamp structure.As Fig. 4, it comprises a short pulse gas-discharge lamp 11, pre-ionization high-voltage power supply 13, high voltage charging power supply 1, a n identical charge/discharge unit 5,6 of (n 〉=2) structure, synchronous triggering signal generator 17 and n the sync amplifier 20,16 that structure is identical.Formation for charge/discharge unit 5,6 is: the positive output end of high voltage charging power supply 1 is linked the anode of energy-storage capacitor 2,7 and thyratron 19,15 by inductance 4,9, resistance 18,10, the diode 3,8 of series connection; The negative terminal of high voltage charging power supply 1 is linked the other end of energy-storage capacitor 2,7 and the negative pole of short pulse gas-discharge lamp 11.The negative electrode of thyratron 19,15 links to each other with the positive pole of short pulse gas-discharge lamp 11.The synchronous triggering amplifier 20,16 that synchronous triggering signal generator 17 output terminals are identical with n structure respectively (... n) input end links to each other, and the output terminal of synchronous triggering amplifier 20,16 links to each other with the grid of thyratron 19,15.Charge/discharge unit have the individual unit of n (n 〉=2) in circuit with 11 storings in parallel of short pulse gas-discharge lamp, the structure of each charge/discharge unit is promptly identical with the structure of above-mentioned charge/discharge unit 5,6 to the structure of n charge/discharge unit from the 1st charge/discharge unit 5.The negative terminal of pre-ionization high-voltage power supply 13 is linked the negative pole of short pulse gas-discharge lamp 11 by pre-ionization current-limiting resistance 12, and the anode of pre-ionization high-voltage power supply 13 links to each other with the positive pole of short pulse gas-discharge lamp 11.The high-pressure side of high pressure trigger generator 14 is linked on the trigger electrode of short pulse gas-discharge lamp 11, and its low-voltage output links to each other with the positive pole of short pulse gas-discharge lamp 11.
Put it briefly, the structure of stroboscope of the present invention is for earlier being added in the positive and negative end of short pulse gas-discharge lamp 11 by pre-ionization high-voltage power supply 13 by resistance 12, and impels its conducting to be in the low discharging current state by high pressure trigger generator 14 output high-frequency and high-voltages to the trigger electrode of short pulse gas-discharge lamp 11.To storage capacitor 2 chargings, finish by first charge/discharge unit 5 chargings by inductance 4, resistance 18, diode 3 for high voltage charging power supply 1 simultaneously.The charging of charge/discharge unit 6 and other each unit is identical therewith.After charging is finished, synchronous triggering signal generator 17 output synchronizing signals are through synchronous triggering amplifier 20, import thyratron 19 respectively after 16 amplifications, 15 ... grid, each storage capacitor 2,7 ... just be docile and obedient preface to 11 discharges of short pulse gas-discharge lamp, form flash of light, the frequency of flash of light depends on signal source frequency, the capacity that the energy of flash of light and pulsewidth depend on storage capacitor and the size of charging voltage, as long as the flash of light pulsewidth all can clearly be differentiated repeatedly flash of light less than half of flash period, because every thyratron or other switches are only worked once every the wheel in the flash of light, so the average power of passing through is very little, can adopt inexpensive miniature thyratron.
The effect of sync amplifier 20,16 is that it can be that the transistor amplifier stage adds controllable silicon amplifier stage or other form amplifiers (seeing example for details) with the pulse signal amplification of input.
The effect of synchronous triggering signal generator 17 is to produce the sequences of pulsed signals of the frequency that meets the requirements and be docile and obedient preface under promoting it is assigned to the sync amplifier 20,16 of n charge/discharge unit 5,6 adding synchronizing signal, to trigger thyratron generation sequential flash.
The effect of pre-ionization high-voltage power supply 13 is to produce high direct voltage.
The effect of high pressure trigger generator 14 is to produce high-voltage pulse to act on outside the fluorescent tube of short pulse gas-discharge lamp 11, and makes its ionization puncture.
If desired stroboscope with add the train pulse synchronization flash and then the synchronization pulse generator can be changed into sync amplifier and divider, all the other are constant can to realize above-mentioned functions.Thyratron 19,15 among the present invention can be controllable silicon or spark gap, or other high-speed switch elements all can be realized shorter or longer flash of light.
Stroboscope of the present invention is to constitute its advantage with single short pulse gas-discharge lamp 11 charge/discharge unit 5,6 identical with individual (n 〉=2) structure of n:
1. can obtain very high flashing rate and average power
For the luminous pulsewidth of microsecond level, can reach 5 * 10
5Inferior/second flashing rate, discharge for submicrosecond that then flashing rate can be higher, the flash of light average power can reach 5 * 10
6Watt or higher.
2. power consumption can be very little.
Owing to adopt the charging battery mode, the output power of whole stroboscope only needs tens watts.
3. cost is low
Since adopt miniature thyratron, cheap, same discharging and recharging under the power, be much lower, because the single lamp list of prior art charge circuit will be used large-scale thyratron than the expense that adopts single charge circuit list modulated structure.
Description of drawings:
Fig. 1 is that single lamp list of prior art charges and discharge loop structure, only can work in the low frequency state.
Fig. 2 is single lamp list charging and discharging circuit structure of prior art, adopts controllable silicon as switch.
Fig. 3 is many discharge loops of the many lamps of prior art structure.
Fig. 4 is that stroboscope of the present invention is the structural representation of the many charge/discharge units of single lamp.
Fig. 5 is the circuit structure diagram of stroboscope embodiment 1 of the present invention.
Fig. 6 is the electrical block diagram of the embodiment 2 of stroboscope of the present invention.
Describe stroboscope structure of the present invention in detail below in conjunction with embodiment and accompanying drawing 5,6.
Embodiment 1:
Charge/discharge unit quantity n=2, concrete structure as shown in Figure 5.High voltage charging power supply 1 is to link bridge rectifier circuit 21 by the output terminal of step-up transformer 84 (adopt elementary 220V in this example, secondary be 10KV), through being parallel with the filter capacitor 22 of resistance 23 and reometer 24, after be connected to the charge/discharge unit of putting 5,6 in parallel.
The formation of pre-ionization high-voltage power supply 13 is when turn-on current transformer 55, its output voltage is through bridge rectifier circuit 54 rectifications, be divided into two-way again after filter capacitor 53 filtering, the one tunnel is added to the positive and negative end of short pulse gas-discharge lamp 11 through reometer 26, diode 25 and pre-ionization current-limiting resistance 12; Another road outputs on the trigger electrode of short pulse gas-discharge lamp 11 through high pressure trigger generator 14.In the present embodiment, the formation of high pressure trigger generator 14 be by after two resistance 51 and 52 dividing potential drops to capacitor 50 charging, the other end of capacitor 50 is linked the elementary of high voltage pulse transformer 49, when pressing K switch
3After, capacitor 50 promptly passes through the elementary discharge of high voltage pulse transformer 49 and respond to the acquisition high voltage on secondary, is added at last on the trigger electrode of short pulse gas-discharge lamp 11.
The formation of synchronous triggering signal generator 17 is after input signal passes through capacitor 64 and resistance 65 differential, and positive signal triggers transistor 67 and makes its conducting.And make transistor 69 from by becoming conducting rapidly, and then on pull-up resistor 71, produce positive pulse signal, be coupled to the monostable circuit that constitutes by capacitor 73 and variable resistor 74 by capacitor 70, make it produce upset, the positive square wave that output pulse width is adjustable.Simultaneously the variable square wave of the ring oscillator output frequency that constitutes by three not gates 80,81,82 of NAND gate circuit (CC4069) and capacitor 78 and variable resistor 79 through not gate 83 paraphase after with the positive square wave of above-mentioned monostable circuit output input nand gate 75 (CC4011) simultaneously, the interior a plurality of high frequency square waves of pulsewidth that are created in monostable circuit are delivered in the divider (CC4017) 76 its output terminals A, B, (C ... n) be connected respectively to sync amplifier 20,16 (... n) on (because of n=2 in this example).First pulse signal is input to 20, the second pulse signals of sync amplifier and is input to sync amplifier 16, and the rest may be inferred, up to there being n pulse signal to be input in n the sync amplifier.
Sync amplifier 20 constitute capacitor 27 and resistance 28 pulse signal differential with input, the compound amplifier stage that its positive signal promotion is made of transistor 29 and transistor 30, so be coupled on the trigger electrode of controllable silicon 35 through capacitor 32 again at the positive pulse signal that produces on the pull-up resistor on the amplifier stage output terminal 31 after amplifying, give the electric weight that is charged on the capacitor 34 through resistance 33 earlier and just pass through the elementary discharge of controllable silicon 35 to pulse transformer 36, the positive pulse high-voltage signal of the secondary generation of pulse transformer 36, make thyratron 19 conductings in first charge/discharge unit 5, then capacitor 2 to 11 discharges of short pulse gas-discharge lamp, so far forms first flash of light by thyratron 19.
Same reason, second pulse signal that is sent by synchronous triggering signal generator 17 is input on the sync amplifier 16.In the sync amplifier 16 at first by capacitor 38 resistance 39 with its pulse signal differential.The compound amplifier stage that the positive signal promotion is made of transistor 40 and transistor 41 is so be coupled on the trigger electrode of controllable silicon 46 through capacitor 43 at the positive pulse signal that produces on the pull-up resistor 42 after amplifying again.Give the electric weight that is charged on the capacitor 45 through resistance 44 earlier and just pass through the elementary discharge of controllable silicon 46 to pulse transformer 47, the positive pulse high-voltage signal of the secondary generation of pulse transformer 47 makes second thyratron 15 conducting in the charge/discharge unit 6, then capacitor 7 to 11 discharges of short pulse gas-discharge lamp, forms second flash of light by thyratron 15.So sequenced flashing to the n pulse.
The frequency Sheffer stroke gate 80,81,82 of sequential flash and resistance 79 are identical with the frequency of the ring oscillator that capacitor 78 is formed.Shan Guang energy is by energy-storage capacitor 2,7 each time ... capacity and charging voltage decision.
Embodiment 2:
See Fig. 6, on the basis of embodiment 1, increase charge/discharge unit 89,91, charge/discharge unit quantity n=4, promptly the phase glistens 4 times weekly.Wherein all the charge/discharge unit 5,6 with embodiment 1 is identical for the structure of charge/discharge unit 5,6,89,91, and relative trigger signal amplifier 20,16,88,90 is also identical with the structure of the trigger pip amplifier 20,16 of embodiment 1.The structure of remainder and bind mode thereof are all identical with embodiment 1.
All obtaining flashing rate among above-mentioned two embodiment is 5 * 10
5Inferior/second, average power reaches 5 * 10
6Watt.
Claims (7)
1. synchronous flashing instrument with high frequency series of short pulses, contain short pulse gas-discharge lamp (11), high voltage charging power supply (1) and charge/discharge unit (5), (6), it is characterized in that containing 1 short pulse gas-discharge lamp (11) identical with n (n 〉=2) structure in circuit with charge/discharge unit (5), (6) of short pulse gas-discharge lamp (11) storing in parallel; The output terminal of high voltage charging power supply (1) links to each other with the charge/discharge unit of putting (5) in parallel, the input end of (6); The negative terminal serial resistance (12) of pre-ionization high-voltage power supply (13) is connected to the negative pole of short pulse gas-discharge lamp (11), and the anode of pre-ionization high-voltage power supply (13) links to each other with the positive pole of short pulse gas-discharge lamp (11); The high-voltage output end of high pressure trigger generator (14) is linked on the trigger electrode of short pulse gas-discharge lamp (11), and the low-voltage output of high pressure trigger generator (14) links to each other with the positive pole of short pulse gas-discharge lamp (11); The synchronous triggering amplifier (20) that the output terminal of synchronous triggering signal generator (17) is identical with n structure respectively, the input end of (16) link to each other, and the output of synchronous triggering amplifier (20), (16) is connected respectively on the grid of interior n the thyratron (19) of n charge/discharge unit (5), (6), (15).
2. according to the described stroboscope of claim 1, it is characterized in that n the charge/discharge unit (5) that structure is identical, (6) formation is the inductance (4) of positive output end by connecting by high voltage charging power supply (1), (9), resistance (18), (10) and diode (3), (8) be connected to energy-storage capacitor (2), (7) a end and thyratron (19), (15) anode, the negative terminal of its high voltage charging power supply (1) is linked energy-storage capacitor (2), the negative pole of the other end (7) and short pulse gas-discharge lamp (11), thyratron (19), (15) negative electrode links to each other with the positive pole of short pulse gas-discharge lamp (11).
3. according to the described stroboscope of claim 1, it is characterized in that high voltage charging power supply (1) is to link bridge rectifier circuit (21) by the output terminal of step-up transformer (84), be connected to charge/discharge unit (5), (6) of putting in parallel behind the filter capacitor (22) through being parallel with resistance (23) and reometer (24).Charge/discharge unit (5), (6).
4. according to the described stroboscope of claim 1, it is characterized in that pre-ionization high-voltage power supply (13) is to link bridge rectifier circuit (54) by the output of power transformer (55), be divided into two-way through filter capacitor (53) filtering again after the rectification, one tunnel reometer (26), diode (25) and pre-ionization current-limiting resistance (12) through series connection is added to the positive and negative end of short pulse gas-discharge lamp (11); Another road is added on the trigger electrode of short pulse gas-discharge lamp (11) through high pressure trigger generator (14).
5. according to claim 1 or 4 described stroboscopes, the formation that it is characterized in that high pressure trigger generator (14) be by after two resistance (51), (52) dividing potential drop to capacitor (50) charging, the other end of capacitor (50) is connected with K switch
3Receive the elementary of high voltage pulse transformer (49) again, K switch
3After the closure, capacitor (50) is added on the trigger electrode of short pulse gas-discharge lamp (11) by the elementary discharge of high voltage pulse transformer (49) and at secondary induction acquisition high voltage.
6. according to the described stroboscope of claim 1, the formation that it is characterized in that synchronous triggering signal generator (17) is that input signal is behind capacitor (64) and resistance (65) differential, positive signal triggers transistor (67) conducting, make transistor (69) become conducting rapidly from ending, go up the generation positive pulse signal at pull-up resistor (71), be coupled to the monostable circuit that constitutes by capacitor (73) and variable resistor (74) by capacitor (70) and make the positive square wave that it overturns, output pulse width is adjustable; Simultaneously the adjustable square wave of the ring oscillator output frequency that constitutes by three not gates (80), (81), (82) and capacitor (78) and the variable resistor (79) of NAND gate circuit after not gate (83) paraphase with the positive square wave while input nand gate (75) of above-mentioned monostable circuit output, the input end of divider (76) is linked in the output of Sheffer stroke gate (75), output terminals A, B, the C of divider (76) ... n is connected respectively to n sync amplifier (20), (16) that structure is identical ... (n) on.
7. according to claim 1 or 6 described stroboscopes, it is characterized in that n the sync amplifier (20) that structure is identical, (16) formation is that pulse signal is through capacitor (27), (38) and (28), (39) behind the differential, its positive signal promotes by transistor (29), (40) and transistor (30), (41) the compound amplifier stage of Gou Chenging, pull-up resistor (31) on compound amplifier stage output terminal, (42) positive pulse signal after generation is amplified is through capacitor (32), (43) be coupled to controllable silicon (35), (46) on the trigger electrode, give earlier through resistance (33), (44) fill to capacitor (34), (45) electric weight is by controllable silicon (35), (46) to pulse transformer (36), (47) elementary discharge, pulse transformer (36), (47) the secondary charge/discharge unit (5) that is connected to, (6) thyratron in (19), (15) on the grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111646 CN1063908C (en) | 1995-06-01 | 1995-06-01 | Synchronous flashing instrument with high frequency series of short pulses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111646 CN1063908C (en) | 1995-06-01 | 1995-06-01 | Synchronous flashing instrument with high frequency series of short pulses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1149141A true CN1149141A (en) | 1997-05-07 |
| CN1063908C CN1063908C (en) | 2001-03-28 |
Family
ID=5078911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111646 Expired - Fee Related CN1063908C (en) | 1995-06-01 | 1995-06-01 | Synchronous flashing instrument with high frequency series of short pulses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063908C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959586A (en) * | 2016-05-25 | 2016-09-21 | 北京理工大学 | High-speed shooting flashlight enhancement device |
| CN108173450A (en) * | 2018-02-06 | 2018-06-15 | 中国工程物理研究院流体物理研究所 | A kind of collection high pressure-burst pulse preionization integration high power bipolar pulse forms circuit |
-
1995
- 1995-06-01 CN CN 95111646 patent/CN1063908C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959586A (en) * | 2016-05-25 | 2016-09-21 | 北京理工大学 | High-speed shooting flashlight enhancement device |
| CN105959586B (en) * | 2016-05-25 | 2019-05-03 | 北京理工大学 | A kind of high-speed photography flash of light enhancement device |
| CN108173450A (en) * | 2018-02-06 | 2018-06-15 | 中国工程物理研究院流体物理研究所 | A kind of collection high pressure-burst pulse preionization integration high power bipolar pulse forms circuit |
| CN108173450B (en) * | 2018-02-06 | 2024-03-12 | 中国工程物理研究院流体物理研究所 | High-power bipolar pulse forming circuit integrating high-voltage short pulse pre-ionization |
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| Publication number | Publication date |
|---|---|
| CN1063908C (en) | 2001-03-28 |
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