CN1133439A - Multipath high-power discharge pulse transient parameter monitoring system - Google Patents
Multipath high-power discharge pulse transient parameter monitoring system Download PDFInfo
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- CN1133439A CN1133439A CN 95111374 CN95111374A CN1133439A CN 1133439 A CN1133439 A CN 1133439A CN 95111374 CN95111374 CN 95111374 CN 95111374 A CN95111374 A CN 95111374A CN 1133439 A CN1133439 A CN 1133439A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 29
- 230000001052 transient effect Effects 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000001939 inductive effect Effects 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000005070 sampling Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 229910052724 xenon Inorganic materials 0.000 abstract description 9
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 abstract description 9
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000007405 data analysis Methods 0.000 description 5
- 238000013480 data collection Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
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- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The invention discloses a multipath high-power discharge pulse transient parameter monitoring system, which is used for monitoring and measuring the working condition of each xenon lamp in a multipath high-power laser device, and consists of a computer system and a multipath signal acquisition branch consisting of an inductive coupler, a transmission cable and a signal retainer, wherein a multipath signal input A/D conversion and address switch in the computer consists of a plurality of analog signal conditioning terminal boards (7117), an analog-to-digital A/D conversion board (6040) and an address switch control board (6160).
Description
The invention belongs to computer measurement system, specifically is a kind of monitoring and measuring system for transient parameter of multiplex high power discharge pulse.
On device of high power laser, improve beam quality, understand the working condition of each xenon lamp, on-call maintenance or replacing luminous component or element are very necessary.The discharge process of high power xenon lamp is finished in extremely short hundreds of microsecond, and discharge power is very high, voltage is more than 20KV, electric current can reach more than the 6KA, the power parameter of measuring moment has more difficulty, and it is just bigger to measure multichannel flashlamp discharge pulse parameter difficulty technically simultaneously, though the data collection and analysis instrument that adopts traditional oscillographic method or Chongqing electronic instrument factory to produce can measure parameter, it is few that it measures way.Though the data collection and analysis instrument can be surveyed 32 road signals, the strong interference affects during because of its high power discharge make to be measured reliability and is reduced greatly, and more as tens to way, and hundreds and thousands of road flashlamp discharge system but is beyond one's ability.If use tens data collection and analysis instrument simultaneously, not only on engineering, be difficult to realize, and also also very uneconomical economically, a data collection and analysis instrument is wanted 6～70,000 yuan, and tens instruments are added utility appliance, and huge so expensive being difficult to bears.
The purpose of this invention is to provide a kind of transient state monitoring system, it can monitor tens the tunnel, the transient parameter of hundreds of road even the high power discharge pulse of thousands of roads, and also this monitoring system is easy to operate, the reliability height, and good in anti-interference performance, with low cost.
Technical scheme of the present invention is: by primary processor, I/O interface, the computer system that peripheral hardware such as multiple signals inputs A/D conversion and address switch and CRT monitor, printer, operation keyboard and software systems are formed, the multiplexed signal sampling branch road that it has is imported as its multiple signals, and in the multiple signals of inside computer system input A/D conversion and the address switch a plurality of analog signal conditioner terminal strips (7117) is arranged.Each terminal strip (7117) has 32 tunnel inputs, promptly can be with 32 tunnel signals collecting branch roads at most, an input end in 32 input ends of modulus A/D change-over panel (6040) is received in the output of each terminal strip (7117), and the control end of each terminal strip (7117) is received on the 32 bit switch control lines of address switch control panel (6160).The output signal of analog-digital conversion a/d plate (6040) is sent into the PC bus, the control signal of address switch control panel (6160) is from PC bus (PC BUS), under the control of computer-internal control signal, sequential control by address switch control panel (6160), just can be transformed into digital signal to the signal that the multiplexed signal sampling branch road comes by analog-digital conversion a/d plate (6040) in an orderly manner, send into primary processor through the PC bus and carry out data processing and calculating, and each signals collecting is propped up the route inductive coupler, and transmission cable and signal retainer are formed.Switching power unit has the multiplex high power xenon lamp, provides the single heavy-current discharge pulse of a voltage up to 20KV to xenon lamp during the switching power unit discharge, and its discharge current is subtriangular, and peak value can reach more than the 6000A, and pulse width is the hundreds of microsecond.Inductive coupler is serially connected in the flashlamp discharge branch road, and inductive coupler takes out the discharge current signal during discharge from the flashlamp discharge branch road, is sent in the signal retainer through transmission cable again, charges to capacitor through the diode of signal retainer.The high low energy of final charging voltage reflects that directly the peak value of flashlamp discharge electric current or the area of discharge pulse current are the discharge charge amount on the capacitor, because of voltage on the electric capacity can keep relative a period of time, so the transient signal of discharge current also can keep a period of time.During this period of time computer system can be gathered the transient signal of each signal retainer at leisure, even repeatedly scan round collection, the work of inner each system of machine as calculated again, after the information processing, deposit in the machine, can or on printer, print various test results in the CRT monitor demonstration at any time as required.
There is very strong electromagnetic interference source in advantages such as the present invention compares with existing measuring technique, and it is many to have the way of measurement, and antijamming capability is strong when the high power flashlamp discharge that laser aid uses, Fang Dian xenon lamp is many more simultaneously, and strong interferers is also just many more.Original technology be the discharge moment the hundreds of microsecond during in the strong jamming condition under measure, so it is limited that it measures way, measure reliability decrease, and the flashlamp discharge current signal transmits with concentric cable after inductive coupler takes out among the present invention, and adopt anti-electromagnetic field to disturb strong current signal transmission, on the capacitor of signal in the arriving signal retainer, can keep relative a period of time, when computer system is carried out the scanning collection transient parameter, strong jamming during discharge is over and done with, " hide " strong jamming like this, improved the measurement reliability.And test (collection) time is not to finish in the hundreds of microsecond, because transient signal can remain on several seconds even a few minutes on the electric capacity, so test macro can be gathered each road signal by easy stages one by one, and can repeatedly gather circularly, improve the measurement reliability, so just can measure the transient signal of hundreds of road even thousands of roads high power single discharge current.Adopted computing machine to make system operation easier, and very practical.Use a computing machine to add a plurality of signals collecting branch roads and some integrated circuit blocks again in the technical program, so its cost is not high, whole monitoring system is cheap, and is economical and practical.
Below table 1, table 2 provide two groups of test data of experiment, in the experiment peak signal of tested reflection pulse current is transformed into voltage design on the signal retainer about 5V.Table 1
Table 2
| ????1 | ??2 | ??3 | ????4 | ????5 | ???6 | ??7 | ??8 | ||
| Preset signal | ???× | ??× | ??× | ????√ | ????× | ??× | ??× | ??× | √ is for there being signal * for no signal |
| Measured value (volt) | ???0 | ??0 | ???0 | ????4.89 | ????0 | ???0 | ??0 | ??0 |
Fig. 1 is multiplex high power flashlamp discharge pulse current peak monitoring system figure.
Fig. 2 is multiple signals input A/D conversion and address switch block diagram.
Fig. 3 is the monitoring system workflow diagram.
Fig. 4 is an initialization flowchart.
Fig. 5 is data acquisition flow figure.
Fig. 6 is multiplex high power flashlamp discharge pulse current area monitoring system figure.
Fig. 7 is multiplex high power flashlamp discharge pulse transient parameter monitoring system figure.
Fig. 8 is 2048 road signals input A/D conversion and address switch block diagram.
The invention will be further described in conjunction with the embodiments according to accompanying drawing below:
Embodiment 1:
In the multiplex high power flashlamp discharge pulse current peak monitoring system figure of Fig. 1, it includes primary processor and I/O interface 8, multiple signals input A/D conversion and address switch 7, power-supply system 14, control system 15 and CRT monitor 9, printer 10, operation keyboard 11, hard-disk system 12, floppy disk system 13 computer system 6.Fig. 2 is the block diagram of multiple signals input A/D conversion and address switch 7.Before opening switching power unit 1, at first open computer system 6, it is got ready.The power switch of closed computer system 6 makes power-supply system 14 each parts power supply to computer system 6, operating operation keyboard 11 and hard-disk system 12, and floppy disk system 13 makes computer system 6 working properly.Press the reset switch that is arranged on operation keyboard 11 limits, make capacitor C in each road signal retainer 5, discharge the remaining voltage on the capacitor C the signal ground short circuit.At this moment computer system 6 just can be carried out work by Fig. 3 monitoring system workflow diagram.Adopt backstage, foreground time-division processing on software design, data acquisition is placed on the backstage is carried out by system clock control, data processing and explanation are carried out on the foreground.Utilize existing Object-oriented Programming Design language preferably.BORLAND C
++FOR DOS carries out program composition.Make it that good man computer interface and quite high reliability be arranged, be easy to safeguard, under the situation of not revising source code, can make amendment its man-machine interface." initialization " carried out in the work beginning, show on the screen that the same day, data file existed not? be that then recording mechanism increases No. 1; Not, then to create the file logging reset, enter the initialization of next program background processing module then, did display file HZK16 exist after initialization finished? be then to enter next program; Not, then prompting warning, and enter next program after allowing the user mend file HZK16.Does then the display menu data file exist? not, then screen display does not report an error, and require the user with the menu data file copy into; Be then to enter the next pending data program of selecting.In order to realize real time of data acquisition, interrupt routine is adopted in program run, make data acquisition module (being multiple signals input A/D conversion and address switch 7) adopt the running background mode, with the asynchronous execution of data analysis display module timesharing in the primary processor I/O interface 8.Fig. 3 is the front stage operation program, and Fig. 5 is the running background program, changes by interrupt routine between the two, reaches the purpose of timesharing asynchronous operation.After the start, system clock in the machine is operation just, No. 13 interruption is that system clock interrupts in dos operating system, this interruption routine per second execution several times that will be activated, system runs to and at this time begins to carry out interrupt routine, data acquisition module is pressed Fig. 5 data acquisition flow figure work, beginning, the beginning entry address enters " carrying out former 13H interrupts " back to " collection of part Monitoring Data ", when system design, can select a few roads signal and gather, as only gather certain 5 the road or certain 10 the tunnel, then by judge these signals " data effectively deny? " the data that are these collections are compared with setting value K (K can be set at 0.01 or 0.1 etc.) one by one, if all less than K, then be invalid, illustrate that flashlamp discharge does not carry out as yet, at this moment the data of Cai Jiing are meaningless, do not need to deposit in internal memory, also there is no need to gather other each road signal data, at this moment program directly arrives the interrupt routine outlet, turn back to foreground program Central Plains and be interrupted a little, system continues to be undertaken by original program; If have a numerical value at least greater than K in these image data, promptly data are effective, then enter " Monitoring Data collection " program, the signal value of whole monitoring points is collected one by one, and send into and carry out signal Processing, calculating, storage in the machine.Arrive interrupt routine outlet then, turn back to that the foreground is former to be interrupted a little, system carries out original program.When program enters " selecting pending data " when the foreground, by operation keyboard 11, key in the code name of secondary data one day, after entering " reading in file data ", occur " image shows " on the screen, enter " function selecting " program, at this moment use mouse to carry out function selecting, if image further will be launched, then select after " sub-piece expansion " displayed image again, function selecting is till meeting the demands once more; As need " report output " or " image printing ", then need are pressed execute key after rolling mouse is made this function image of its arrow alignment, and printer 10 just prints needed form or image; Return high one-level image as need, then mouse is selected " the sub-piece of high one-level ", makes its image turn back to upper level; If need to select the data of another time, then select " data file selection ", and key in the code name (in such a month, and on such a day certain secondary data code name) of required data, enter " reading in file data " successively, " image shows ", " function selecting " supervisor.After work is finished, just can select to quit a program shutdown.
When performing test, computer system 6 prepares, and when constantly carrying out the scan round Monitoring Data, just can begin to carry out flashlamp discharge has tested, operating personnel's external power source of supply unit 1 that closes a switch at this time, voltage on its inner high-voltage capacitor is progressively risen, when arriving certain value when rising, high-voltage capacitor discharges to the xenon lamp 2 of each flashlamp discharge branch road simultaneously, form subtriangular high power discharge pulse, xenon lamp 2 sends strong flash of light, in the discharge paths of xenon lamp 2, be serially connected with inductive coupler 3, elementary 1 circle of getting usually of inductive coupler 3, its number of secondary turns can be proofreaied and correct to determine, generally be got 100～300 circles with Theoretical Calculation and experiment.The discharge current signal that inductive coupler 3 induces is sent to signal retainer 5 through transmission cable 4, signal retainer 5 is by resistance R, diode V and capacitor C press the π type and form, resistance R is connected in parallel on the input end, capacitor C is connected in parallel on the output terminal, diode V is connected between resistance R and the capacitor C, its anodal connecting resistance R, the current signal of induction is flowed through resistance R to signal ground, on resistance R, form subtriangular voltage waveform, this voltage charges to capacitor C through diode V simultaneously, voltage on the capacitor C raises with the rising of voltage on the resistance R, here the time constant of resistance capacitance is chosen in the width of 1/10～1/3 discharge pulse current, its resistance will mate with the impedance phase of transmission cable, generally selects tens to hundreds of ohm.After pulse voltage rises to peak value, begin to descend, at this moment diode V is in reverse blocking state gradually, voltage on the capacitor does not descend with the decline of voltage on the resistance, but the peak value h of current discharge pulse current is kept relative a period of time, select quite a lot of capacitor and the diodes of quality, can remain on crest voltage more than 98%, for 2～3 minutes, the signal voltage on the capacitor enters the input end that multiple signals are imported corresponding analog signal conditioner terminal strip (7117) in A/D conversion and the address switch 7 in each road signal retainer 5 in the meantime, system clock in machine, under the control of interrupt routine and address switch control panel (6160), each road signal becomes digital signal by analog to digital conversion plate (6040) successively, send in the machine by way of the PC bus, through primary processor, be stored in internal memory or floppy disk system 13 after the information processings such as memory, for calling on the foreground.
Embodiment 2:
Fig. 6 multiplex high power discharge pulse current area monitoring system figure, be another embodiment, it is to adopt different signal retainers with the difference of embodiment 1, signal retainer 5 is the peak value type among Fig. 1, signal retainer 16 among Fig. 6 is an integral form, both are basic identical, it is the resistance R that do not have of integral form, in the discharge pulse current signal is sent to signal retainer 16, pulse current charges to capacitor C through diode V, voltage rises along with charging on the electric capacity, because inductive coupler 3 is equivalent to a current source with transmission cable 4, so when pulse current descends behind peaking, still charge, capacitance voltage continues to rise, have only to charging to finish, condenser voltage just tops out, and can keep relative a period of time, therefore the final magnitude of voltage S on the capacitor is proportional to the area of discharge pulse waveform, the i.e. quantity of electric charge.The course of work of other each several part and embodiment 1 are identical in the present embodiment, so no longer stating more.
Embodiment 3:
Fig. 7 multiplex high power flashlamp discharge pulse transient parameter monitoring system figure, be another embodiment, in each flashlamp discharge branch road, be connected in series two inductive couplers 3 and transmission cable 4 simultaneously, one the tunnel connects peak value type signal retainer 5 after them, another road connects integral form signal retainer 16, behind each flashlamp discharge, computer system 6 can both be got off the peak value h of every road flashlamp discharge pulse and discharge pulse waveform area S survey record, through calculating the half width value (t that is easy to draw discharge pulse
=s/h).The input of 2048 road signals, A/D conversion and address switch block diagram provide in Fig. 8.In this embodiment, when the interruption program is carried out among Fig. 5 data acquisition flow figure image data, primary processor in the machine sends instruction, allow the A/D (6040-1) on the left side work earlier, after it has been worked, allow (6040-2) work on the right again, collect at last the 2048 the tunnel like this from first via signal by the road, turn back to interrupting exporting that the foreground is former to be interrupted a little then, carry out foreground program, other course of work is identical with preceding two embodiment.
In above-mentioned three embodiment, monitoring system all is a monitoring high power flashlamp discharge pulse transient parameter, and it comes down to measure the transient parameter of the big electric current of single pulse that flows through in a certain lead, so this monitoring system can be measured other similar pulse high current transient parameter fully.If the primary turns in the inductive coupler 3 is increased, adjust corresponding number of secondary turns and just can measure discharge current equally in this monitoring system in tens heavy current pulse parameters to the hundreds of peace situation.This monitoring system is the multichannel measurement system, and it also can measure the discharge pulse transient parameter on single channel or several roads as can be seen on its principle, and in general, it is many more to measure way, can show its superiority more.
Claims (3)
1, a kind of multiplex high power discharge pulse transient state monitoring system comprises:
(1) primary processor and I/O interface (8);
(2) power-supply system (15), control system (14);
(3) CRT monitor (9), printer (10), operation keyboard (11), hard-disk system (12), floppy disk system (13);
It is characterized in that this transient state monitoring system also comprises:
(4) the multiplexed signal sampling branch road is as the input of its multiple signals, and every road signals collecting is propped up route inductive coupler (3), transmission cable (4), signal retainer (5) or (16) are formed;
(5) be to import as multiple signals in multiple signals input A/D conversion and the address switch (7) with a plurality of analog signal conditioner terminal strips (7117), the output of each terminal strip (7117) is received on the input end in 32 input ends of modulus A/D change-over panel (6040), the control end of each terminal strip (7117) is received on the 32 bit switch control lines of address switch control panel (6160), the output signal of modulus A/D change-over panel (6040) is sent into the PC bus, and the control signal of address switch control panel (6160) is from the PC bus;
(6) inductive coupler (3) in each signals collecting branch road is serially connected in the flashlamp discharge branch road.
2, transient state monitoring system according to claim 1 is characterized in that each flashlamp discharge branch road can be connected in series one or two signals collecting branch road.
3, according to the transient state monitoring system of claim 1 or 2, it is characterized in that the signal retainer in the signals collecting branch road can be peak value type signal retainer (5), promptly by resistance R, diode V and capacitor C press the π type and form, its resistance R is parallel to input end, capacitor C is parallel to output terminal, is connected its anodal connecting resistance R between the two by diode V; Or can be integral form signal retainer (16), promptly there is not resistance R in the signal retainer; Or each one of peak value type signal retainer (5) and integral form signal retainer (16).
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| CN 95111374 CN1133439A (en) | 1995-05-25 | 1995-05-25 | Multipath high-power discharge pulse transient parameter monitoring system |
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| CN 95111374 CN1133439A (en) | 1995-05-25 | 1995-05-25 | Multipath high-power discharge pulse transient parameter monitoring system |
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| CN1133439A true CN1133439A (en) | 1996-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406852C (en) * | 2000-04-24 | 2008-07-30 | 谭维克 | Multi-signal processing circuit, compund sensor and following detector thereof |
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1995
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406852C (en) * | 2000-04-24 | 2008-07-30 | 谭维克 | Multi-signal processing circuit, compund sensor and following detector thereof |
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