CN112599393A - Method for matching automatic gating power supply of image intensifier and automatically setting parameters - Google Patents

Method for matching automatic gating power supply of image intensifier and automatically setting parameters Download PDF

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CN112599393A
CN112599393A CN202011442140.6A CN202011442140A CN112599393A CN 112599393 A CN112599393 A CN 112599393A CN 202011442140 A CN202011442140 A CN 202011442140A CN 112599393 A CN112599393 A CN 112599393A
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power supply
voltage
image
image tube
characteristic curve
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CN112599393B (en
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周盛涛
李亚情
朱文锦
李臻
杜培德
李晓露
何雁彬
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North Night Vision Technology Co Ltd
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    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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Abstract

The invention discloses a method for matching and automatically setting parameters of an automatic gating power supply of an image intensifier, which comprises the following steps: respectively collecting screen effect eta/anode voltage V1, sensitivity j/cathode voltage V2 and electronic gain G of the vacuum image tubeMVoltage V3 of microchannel plate, high voltage V1, V2, V3 output from automatic gate control power supply, and anode termination current IfAnd the like; substituting relevant parameters of the power supply to be selected into the characteristic curve one by one through an algorithm, and calculating the actual screen effect and the actual sensitivity; calculating the difference between the brightness and the brightness gain and the factory requirement, and judging the power supply more suitable for the vacuum image tube; calculating the voltage V3 of the automatic gate control power supply to the micro-channel plate with the built-in program and the anode termination current IfThe correction quantity of the image intensifier finishes the setting of the power supply parameters at one time, and the purposes of improving the consistency of the image intensifier and improving the electronic adjustment efficiency are achieved.

Description

Method for matching automatic gating power supply of image intensifier and automatically setting parameters
Technical Field
The invention relates to the technical field of image intensifiers, in particular to a method for matching an automatic gate control power supply of an image intensifier and automatically setting parameters, and particularly relates to a method for matching an image intensifier vacuum image tube and the automatic gate control power supply and a method for automatically setting internal program parameters of the automatic gate control power supply.
Prior Art
The image intensifier automatic gate control power supply converts direct current low voltage into high voltage to supply power to the vacuum image tube, and automatically adjusts the amplitude and pulse width of the power supply voltage according to the current of the sampled fluorescent screen, thereby ensuring that the image tube can keep stable brightness output under the conditions of weak light and strong light. Meanwhile, before the image intensifier leaves the factory, electronic adjustment is needed to ensure that the output characteristic meets the technical requirements, and the brightness gain G and the maximum output brightness MOB of the image intensifier are set mainly by adjusting corresponding parameters of an automatic gate control power supply.
Brightness gain G, cathode sensitivity j of vacuum image tube, and electron gain G of microchannel plateMThe panel effect eta of the vacuum image tube and the anode voltage V1 of the automatic gate control power supply, wherein the electronic gain GMThe voltage V3 of the microchannel plate of the automatic gating power supply is positively correlated, the sensitivity j is positively correlated with the cathode voltage V2, and only the voltage V3 of the microchannel plate is adjustable, so that the brightness gain G of the image intensifier can meet the factory requirements by changing the voltage V3 of the microchannel plate of the power supply during electronic adjustment.
Maximum output brightness MOB and automatic gate control power supply anode termination current IfThe anode voltage V1 and the screen effect eta of the vacuum image tube are in direct proportion, wherein the screen effect eta is positively correlated with the anode voltage V1, and only the anode termination current I isfIs adjustable. Thus by varying the terminating current I of the power supply during electronic regulationfThe maximum output brightness MOB of the image intensifier meets the factory requirements.
The existing image intensifier is formed by randomly matching and encapsulating an automatic gate control power supply qualified by testing and a vacuum image tube. The electronic tuning process is as follows:
1) the output brightness B of the image intensifier is tested under a specific illumination E1, and B/E is calculated1Obtaining brightness gain G, adjusting the automatic gate control power supply micro-channelThe plate voltage V3 or the power supply internal program is corrected until the brightness gain G meets the requirement;
2) testing the maximum output brightness MOB of the image intensifier under the specific illumination E2, and modifying the internal program of the power supply until the MOB meets the requirement;
the output brightness of the image intensifier needs to be tested in a dark box, a product needs to be taken out when the power supply voltage is adjusted or a program is corrected, the adjustment amount is estimated by the experience of an operator to carry out blind adjustment, the adjustment is difficult to be completed at one time, the debugging efficiency is low, the factory brightness and the brightness gain of the image intensifier cannot be ensured to be consistent, meanwhile, the change stepping consistency of external brightness adjustment is poor, and secondary piping is needed for a complete machine needing to be provided with two or more image intensifiers.
Disclosure of Invention
Aiming at the defects in the prior art, the inventor provides a method for matching an image intensifier vacuum image tube and an automatic door control power supply and a method for automatically setting the parameters of a built-in program of the automatic door control power supply, aiming at overcoming the defects in the prior art, including improving the factory consistency of the image intensifier and the consistency of external brightness adjustment stepping, and improving the electronic adjustment efficiency of the image intensifier on the basis.
The basic idea of the method of the invention is as follows:
firstly, collecting the following data: (1) the screen effect eta/anode voltage V1 characteristic curve of the vacuum image tube; (2) sensitivity j/cathode voltage V2 characteristic curve; (3) electronic gain GMVoltage V3 characteristic curve of microchannel plate; (4) the automatic gate control power supply outputs high voltages V1, V2 and V3; (5) anode termination current If。
And secondly, substituting related parameters of the power supply to be selected into the characteristic curve of the vacuum image tube one by one through an algorithm to calculate the actual screen effect and the sensitivity of the image intensifier.
And thirdly, further calculating the brightness of the image intensifier, the difference between the brightness gain and the factory requirement so as to judge the power supply more suitable for the vacuum image tube and solve the problem of matching the vacuum image tube of the image intensifier with the automatic gate control power supply.
Fourthly, the automatic calculation can be carried out by combining the factory requirements of brightness and brightness gain while the algorithm is selected and matchedVoltage V3 of gate control power supply to micro-channel plate with built-in program and anode termination current IfThe correction quantity of the image intensifier finishes the setting of the power supply parameters at one time, and the purposes of improving the consistency of the image intensifier and improving the electronic adjustment efficiency are achieved.
The specific technical scheme of the invention is as follows:
an image intensifier automatic gate control power supply matching and parameter automatic setting method comprises the following steps:
step 1.1, fitting a screen effect eta/anode voltage V1 characteristic curve by using sampled data
Randomly taking m picture tubes of the same type, and fixing the anode current IAWhen the anode voltage V1 is 100nA, averaging n points between 5.6KV and 6KV, and collecting luminous flux phi output by fluorescent screen corresponding to each anode voltageiAnd calculate phiiAveraging to obtain n sets of data (V1)i，φi) Wherein
Figure BDA0002822717570000031
By formula (1):
Figure BDA0002822717570000032
calculating and fitting an eta/V1 characteristic curve, and taking the curve as an eta/V1 characteristic curve of the image tube;
step 1.2, fitting a sensitivity j/cathode voltage V2 characteristic curve by using sampled data
Taking m image tubes in the step 1.1, fixing the input illumination of the cathode as E1, taking n points on average between 160V and 240V for cathode voltage V2, and respectively collecting cathode output optical current I corresponding to each cathode voltageciAnd calculate IciAveraging to obtain n sets of data (V2)i,Ici) Wherein
Figure BDA0002822717570000033
By formula (2):
Figure BDA0002822717570000034
calculating and fitting a j/V2 curve, and taking the curve as a j/V2 characteristic curve of the image tube, wherein S represents the effective area of the cathode;
step 1.3, sample data fitting electronic gain GMVoltage V3 characteristic curve of microchannel plate
Taking m image tubes in the step 1.2, fixing the cathode input illumination as E2, the cathode voltage V2 as 200V, the anode voltage V1 as 6KV, taking n points on average between 750V and 1000V of the microchannel plate voltage V3, and respectively collecting the fluorescent screen output light flux phi corresponding to each microchannel plate voltagei' and calculate phii' averaging to obtain n sets of data (V3)i，φi') wherein
Figure BDA0002822717570000035
By formula (3):
Figure BDA0002822717570000036
calculating true electron gain GMChange and calculate and fit GMThe characteristic curve of/V3 is taken as G of the image tubeMThe characteristic curve of/V3, wherein S represents the effective area of the cathode;
step 2, matching the vacuum image tube and the automatic door control power supply
After completing the step 1, an automatic gate control power supply is selected and matched for the vacuum image tube as follows:
step 2.1, retrieve the eta/V1 characteristic curve, j/V2 characteristic curve, G of the image tube in the databaseMa/V3 characteristic curve, wherein V1 and V2 parameters of a power supply to be selected and matched are respectively substituted into corresponding curves, and the actual eta and j after the image tube power supply is matched are calculated;
and 2.2, substituting actual V1, eta and j into a formula (4) by combining the brightness gain G required by factory delivery:
Figure BDA0002822717570000041
calculating the electronic gain G required for meeting the brightness gain requirement of the image intensifierMInto GMObtaining the voltage V of the micro-channel plate required to be output by the automatic gate control power supply through the characteristic curve of/V3MThe program correction amount Δ V ═ V is calculated in conjunction with the original microchannel plate voltage V3 of the power supplyM-V3|；
And 2.3, substituting the actual V1 and eta into a formula (5) by combining the maximum output brightness B required by factory delivery:
Figure BDA0002822717570000042
calculating the anode termination current I of the automatic gate-controlled power supply which meets the requirement of the maximum output brightness of the image intensifierBCombined with the original termination current I of the power supplyfCalculating a correction amount Δ I ═ I of the programB-If|；
And 2.4, substituting the delta V and the delta I into a formula (6) by taking the delta V and the delta I as evaluation variables:
N＝Q·ΔV+P·ΔI (6)
calculating a correction coefficient N of the power program after the vacuum image tube is matched with the automatic gate control power supply, wherein the smaller N represents that the image tube is higher in adaptation degree with the power supply, Q, P represents the weighting coefficients of two correction amounts, and the correction coefficients are set according to the influence degree of the corrected variables on the operation continuity of the power program;
step 3, automatically setting parameters of the automatic door control power supply
Step 3.1, connecting the image intensifier with a data system, taking out the voltage V of the microchannel plate calculated during matching according to the serial number of the vacuum image tube of the image intensifier, and meeting the requirements of factory brightness gain and maximum output brightness of the image intensifierMAnd anode termination current IBSubstituting into equations (7) and (8), respectively:
Figure BDA0002822717570000043
Figure BDA0002822717570000044
calculating corresponding parameters D 'according with the brightness gain G of the image intensifier and the requirement of the maximum output brightness MOB'1、D′2；
In the formula: d1Indicating the microchannel plate voltage V in the pre-trim procedureMParameter, D2Indicating the anode off current I in the pre-conditioning routineBA parameter;
step 3.2, finally calculating the D'1、D′2And replacing the original parameters of the program in the power supply by the two parameters to finish the automatic setting of the parameters of the automatic door-to-door power supply.
The invention has the beneficial effects that:
the matching of the original vacuum image tube and the power supply is random, joint adjustment is carried out only after the completion of encapsulation, and resource waste is caused easily because the output state of the image intensifier cannot be adjusted to meet the factory requirements due to the mismatching of the performances of the image tube and the power supply; and the adjustment can not be carried out during the dark box test, the program needs to be repeatedly taken out from the dark box for rewriting, and the efficiency is low. According to the invention, through data acquisition, the matching of the image tube power supply is carried out before encapsulation, so that the problem that the output state of the image intensifier after encapsulation cannot be adjusted to the factory requirement can be effectively avoided; meanwhile, through data calculation, before the image intensifier is tested, power supply parameters are corrected in one step according to the delivery requirements of the image intensifier, and the electronic adjustment efficiency and delivery consistency of the image intensifier can be effectively improved.
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Fig. 1 is a flow chart of power source matching and parameter automatic setting according to the present invention.
Detailed Description
An image intensifier automatic gate control power supply matching and parameter automatic setting method comprises the following steps:
step 1, data acquisition
Step 1.1, sampling and fitting a screen effect eta/anode voltage V1 characteristic curve
The screen effect is the inherent characteristic of a fluorescent screen, and the screen effect cannot be directly measured on a vacuum image tube, and the prior methodBy measuring the anode current IAThe luminous flux phi outputted from the phosphor screen was calibrated at 100nA and at 6KV anode voltage V1, and it was considered that
Figure BDA0002822717570000051
In the actual test process, the screen effect is found to be increased along with the increase of the anode voltage V1 within a certain range, and the anode voltage of the automatic gate control power supply is within the range of 5.8 +/-0.2 KV, so that the screen effect of only testing one point of the screen at 6KV can only judge whether the screen is qualified or not.
The method requires measuring the anode current IA100nA, anode voltage V1Continuously increasing the luminous flux phi output by the fluorescent screen from 5.6KV to 6KV, and calculating and fitting eta/V1Characteristic curve. The method specifically comprises the following steps:
randomly taking m picture tubes of the same type, and fixing the anode current IAWhen the anode voltage V1 is 100nA, averaging n points between 5.6KV and 6KV, and collecting luminous flux phi output by fluorescent screen corresponding to each anode voltageiAnd calculate phiiAveraging to obtain n sets of data (V1)i，φi) Wherein
Figure BDA0002822717570000061
By the formula
Figure BDA0002822717570000062
And calculating and fitting an eta/V1 characteristic curve, and taking the curve as an eta/V1 characteristic curve of the image tube.
Step 1.2, sampling and fitting a sensitivity j/cathode voltage V2 characteristic curve
The sensitivity is the inherent characteristic of the cathode of the vacuum image tube, and the cathode can not be directly measured on the vacuum image tube, and the current method is to measure the cathode output photocurrent I under the conditions of fixed illumination E1 and cathode voltage V2 of 200VCCalibration is carried out, and it is considered that
Figure BDA0002822717570000063
In the actual test process, the sensitivity is found to increase along with the increase of the cathode voltage V2 within a certain rangeHigh, and the voltage of the automatically-gated power supply cathode is in the range of 200 +/-40V, so that the sensitivity of the cathode at 200V point can be tested only to judge whether the cathode sensitivity is qualified or not.
The method needs to measure the photocurrent I output by the cathode under the conditions that the input illumination E1 of the cathode and the cathode voltage V2 continuously rise from 160V to 240VCAnd calculating and fitting a j/V2 characteristic curve. The method specifically comprises the following steps:
taking m image tubes in 1.1, fixing the input illumination of a cathode as E1, taking n points on average between 160V and 240V for cathode voltage V2, and respectively collecting photocurrent I output by the cathode corresponding to each cathode voltageciAnd calculate IciAveraging to obtain n sets of data (V2)i，Ici) Wherein
Figure BDA0002822717570000064
By the formula
Figure BDA0002822717570000065
A j/V2 curve (S represents the effective area of the cathode) is calculated and fitted, and the curve is used as a j/V2 characteristic curve of the image tube.
Step 1.3, sampling and fitting electronic gain GMVoltage V3 characteristic curve of microchannel plate
The electronic gain is the inherent characteristic of the microchannel plate, and cannot be directly measured on the vacuum image tube, and the current method is to judge whether the gain characteristic is qualified or not by measuring the fluorescent screen output brightness B 'under the conditions of weak illumination E2, cathode voltage V2 being 200V, anode voltage V1 being 6KV and microchannel plate voltage V3 being V3'.
The method needs to measure the change condition of the output luminous flux phi' of the fluorescent screen under the conditions that weak illumination E2, cathode voltage V2 is 200V, anode voltage V1 is 6KV and voltage V3 of the microchannel plate continuously rises to 1000V from 750V, and according to a formula:
Figure BDA0002822717570000071
calculating true electron gain GMChange and calculate and fit GMCharacteristic curve of/V3 (S represents the effective area of the cathode). In particular toComprises the following steps:
taking m image tubes of 1.2, taking n points on average with fixed cathode input illumination E2, cathode voltage V2 equal to 200V, anode voltage V1 equal to 6KV and micro-channel plate voltage V3 between 750V and 1000V, and collecting the screen output luminous flux phi 'corresponding to each micro-channel plate voltage'iAnd calculating phi'iAveraging to obtain n sets of data (V3)i，φ′i) Wherein
Figure BDA0002822717570000072
By the formula
Figure BDA0002822717570000073
Calculating true electron gain GMChange and calculate and fit GMThe characteristic curve of/V3 is used as G of the image tubeMCharacteristic curve/V3, where S denotes the cathode active area.
Step 2, matching the vacuum image tube and the automatic door control power supply
After completing data acquisition, an automatic gate control power supply is selected and matched for the vacuum image tube as follows:
(1) retrieving the eta/V1 characteristic curve, j/V2 characteristic curve, G of the image tube in the databaseMa/V3 characteristic curve, wherein V1 and V2 parameters of a power supply to be selected and matched are respectively substituted into corresponding curves, and the actual eta and j after the image tube power supply is matched are calculated;
(2) and combining the brightness gain G required by the factory, and substituting the actual V1, eta and j into the formula:
Figure BDA0002822717570000074
calculating the electronic gain G to meet the brightness gain requirement of the image intensifierMInto GMObtaining the voltage V of the micro-channel plate required to be output by the automatic gate control power supply through the characteristic curve of/V3MThe program correction amount Δ V ═ V is calculated in conjunction with the original microchannel plate voltage V3 of the power supplyM-V3|；
(3) And substituting the actual V1 and eta into a formula by combining the maximum output brightness B required by the factory:
Figure BDA0002822717570000075
calculating the anode termination current I of the automatic gate-controlled power supply which meets the requirement of the maximum output brightness of the image intensifierBCombined with the original termination current I of the power supplyfCalculating a correction amount Δ I ═ I of the programB-If|。
(4) Substituting the variables Δ V and Δ I into N ═ Q · Δ V + P · Δ I to calculate a correction coefficient N of the power program after the vacuum image tube is matched with the automatic gate control power supply, wherein the smaller N represents the higher the image tube/power supply matching degree, Q, P represents the weighting coefficients of two correction amounts, and the correction coefficients are set according to the influence degree of the corrected variables on the operation continuity of the power program.
The image tube matching power supply is a process of substituting the related parameters of the power supplies of the batches to be matched into the formula one by one to calculate the correction coefficient N and compare the correction coefficient N, and the correction coefficient of the first power supply is recorded as N in the image tube matching process1The second power supply correction coefficient is recorded as N2Comparison of N1、N2The size of the power supply is kept smaller, the power supply is compared for the next time until the power supply calculation comparison of the batch is completed, the power supply with the minimum correction coefficient is taken for matching, the power supply is moved out of the area to be selected and matched, and the image tube/power supply serial number is correlated; when the ith power supply correction coefficient N appears in the processi≤NminAnd then, the power supply is moved out of the region to be selected and the subsequent power supply is not matched with the image tube for calculation any more, and the image tube/power supply serial number is correlated, wherein N isminIs the minimum correction factor for that type of tube.
When a certain image tube finishes the calculation of all power supply correction coefficients in a batch, the minimum correction coefficient Ni>NmaxIndicating that the image tube has poor adaptability to the power source of the current batch, and leaving the power source of the next batch to be preferentially selected, wherein N ismaxThe maximum correction coefficient of the image tube is the maximum correction coefficient of the image tube; if the image tube completes the matching of 10 batches of power supplies, the minimum correction coefficient Ni>NmaxThe usage is degraded. And completing the power supply which is not successfully matched in the image tube matching calculation of one batch, and reserving the minimum correction coefficient at this time for the image tube priority alternative of the next batch. If it isAfter the power supply finishes the matching of 10 batches of image tubes, the minimum correction coefficient Ni>NmaxIf yes, the use is degraded; minimum correction factor N is less than or equal to NmaxIf the matching is not successful, the power source is degraded.
Step 3, automatically setting parameters of the automatic door control power supply
After the matching of the image tube power supply and the encapsulation of the image intensifier are finished, the power supply parameters are automatically set, the image intensifier is connected with a data system, and the voltage V of the microchannel plate calculated during the matching is taken out according to the serial number of the vacuum image tube of the image intensifier, so that the requirements of the factory brightness gain and the maximum output brightness of the image intensifier are metMAnd anode termination current IBRespectively substituting into the formula:
Figure BDA0002822717570000081
Figure BDA0002822717570000082
(D1indicating the microchannel plate voltage V in the pre-trim procedureMParameter, D2Indicating the anode off current I in the pre-conditioning routineBParameter) and calculating corresponding parameter D 'meeting the requirements of brightness gain G and maximum output brightness MOB of the image intensifier'1、D′2(ii) a And finally, replacing the original parameters of the program in the power supply by the two calculated parameters to finish the automatic setting of the parameters of the automatic door-to-door power supply.

Claims (6)

1. An automatic gate control power supply matching and parameter automatic setting method for an image intensifier is characterized by comprising the following steps:
step 1, data acquisition and characteristic curve fitting
Step 1.1, fitting a screen effect eta/anode voltage V1 characteristic curve by using sampled data
Randomly taking m picture tubes of the same type, and fixing the anode current IAWhen the anode voltage V1 is 100nA, averaging n points between 5.6KV and 6KV, and collecting luminous flux phi output by fluorescent screen corresponding to each anode voltageiAnd calculate phiiThe average value is used to obtain n groups of data (V1i, phi)i) Wherein
Figure FDA0002822717560000011
By formula (1):
Figure FDA0002822717560000012
calculating and fitting an eta/V1 curve, and taking the curve as an eta/V1 characteristic curve of the image tube;
step 1.2, fitting a sensitivity j/cathode voltage V2 characteristic curve by using sampled data
Taking m image tubes in the step 1.1, fixing the input illumination of the cathode as E1, taking n points on average between 160V and 240V for cathode voltage V2, and respectively collecting cathode output optical current I corresponding to each cathode voltageciAnd calculate IciAveraging to obtain n sets of data (V2)i,Ici) Wherein
Figure FDA0002822717560000013
By formula (2):
Figure FDA0002822717560000014
calculating and fitting a j/V2 curve, and taking the curve as a j/V2 characteristic curve of the image tube, wherein S represents the effective area of the cathode;
step 1.3, sample data fitting electronic gain GMVoltage V3 characteristic curve of microchannel plate
Taking m images of the tube in the step 1.2, taking n points on average with the fixed cathode input illumination intensity of E2, the cathode voltage V2 being 200V, the anode voltage V1 being 6KV and the micro-channel plate voltage V3 being 750V-1000V, and respectively collecting the luminous flux phi 'of the fluorescent screen output corresponding to each micro-channel plate voltage'iAnd calculating phi'iAveraging to obtain n sets of data (V3)i，φ′i) Wherein
Figure FDA0002822717560000015
By formula (3):
Figure FDA0002822717560000021
calculating the electron gain G of a vacuum tubeMChange and calculate and fit GMThe curve V3 is used as G of the image tubeMThe characteristic curve of/V3, wherein S represents the effective area of the cathode;
step 2, matching the vacuum image tube and the automatic door control power supply
After completing the step 1, an automatic gate control power supply is selected and matched for the vacuum image tube as follows:
step 2.1, retrieve the eta/V1 characteristic curve, j/V2 characteristic curve, G of the image tube in the databaseMa/V3 characteristic curve, wherein V1 and V2 parameters of a power supply to be selected and matched are respectively substituted into corresponding curves, and the actual eta and j after the image tube power supply is matched are calculated;
and 2.2, substituting actual V1, eta and j into a formula (4) by combining the brightness gain G required by factory delivery:
Figure FDA0002822717560000022
calculating the electronic gain G required for meeting the brightness gain requirement of the image intensifierMInto GMObtaining the voltage V of the micro-channel plate required to be output by the automatic gate control power supply through the characteristic curve of/V3MThe program correction amount Δ V ═ V is calculated in conjunction with the original microchannel plate voltage V3 of the power supplyM-V3|；
And 2.3, substituting the actual V1 and eta into a formula (5) by combining the maximum output brightness B required by factory delivery:
Figure FDA0002822717560000023
calculate the arrival imageAnode termination current I of automatic gate-controlled power supply for maximum output brightness requirement of intensifierBCombined with the original termination current I of the power supplyfCalculating a correction amount Δ I ═ I of the programB-If|；
And 2.4, substituting the delta V and the delta I into a formula (6) by taking the delta V and the delta I as evaluation variables:
N＝Q·ΔV+P·ΔI (6)
calculating a correction coefficient N of the power program after the vacuum image tube is matched with the automatic gate control power supply, wherein the smaller N represents that the image tube is higher in adaptation degree with the power supply, Q, P represents the weighting coefficients of two correction amounts, and the correction coefficients are set according to the influence degree of the corrected variables on the operation continuity of the power program;
step 3, automatically setting parameters of the automatic door control power supply
Step 3.1, connecting the image intensifier with a data system, taking out the voltage V of the microchannel plate calculated during matching according to the serial number of the vacuum image tube of the image intensifier, and meeting the requirements of factory brightness gain and maximum output brightness of the image intensifierMAnd anode termination current IBSubstituting into equations (7) and (8), respectively:
Figure FDA0002822717560000031
Figure FDA0002822717560000032
calculating corresponding parameters D 'according with the brightness gain G of the image intensifier and the requirement of the maximum output brightness MOB'1、D′2；
In the formula: d1Indicating the microchannel plate voltage V in the pre-trim procedureMParameter, D2Indicating the anode off current I in the pre-conditioning routineBA parameter;
step 3.2, finally calculating the D'1、D′2And replacing the original parameters of the program in the power supply by the two parameters to finish the automatic setting of the parameters of the automatic door-to-door power supply.
2. An optional and automatic parameter setting method for an image intensifier auto-gated power supply as claimed in claim 1, wherein the step 2.4 further comprises:
substituting the related parameters of the power supplies of the batches to be selected into the formula (6) one by one to calculate and compare the correction coefficient N, and recording the correction coefficient of the first power supply as N in the process of image tube selection1The second power supply correction coefficient is recorded as N2Comparison of N1、N2And (4) comparing the power supply of the current batch until the power supply calculation and comparison of the current batch are completed, matching the power supply with the minimum correction coefficient, moving the power supply out of the region to be selected, and associating the image tube with the power supply serial number.
3. An optional and automatic parameter setting method for an image intensifier auto-gated power supply as claimed in claim 1, wherein the step 2.4 further comprises:
when the ith power supply correction coefficient N appears in the comparison processi≤NminAnd when the power supply is matched with the image tube, the power supply is moved out of the region to be selected, the subsequent power supply is not matched with the image tube for calculation, and the image tube is associated with the power supply serial number, wherein N isminIs the minimum correction factor of the image tube power supply.
4. An option and parameter auto-setting method for an image intensifier auto-gated power supply according to claim 2 or 3, characterized by:
when a certain image tube finishes the calculation of all power supply correction coefficients in a batch, the correction coefficient N with the minimum power supply in the batchi>NmaxIndicating that the image tube has poor adaptability to the power source of the current batch, and leaving the power source of the next batch to be preferentially selected, wherein N ismaxThe maximum correction coefficient of the image tube power supply is set;
if the image tube completes the selection of 10 batches of power supplies, the minimum correction coefficient N of the 10 batchesi>NmaxThe usage is degraded.
5. The method of claim 4, wherein the method comprises:
and completing the power supply which is not successfully matched in the image tube matching calculation of one batch, and reserving the minimum correction coefficient at this time for the image tube priority alternative of the next batch.
6. The method of claim 4, wherein the method comprises:
if the power source completes the matching of 10 batches of image tubes, the minimum correction coefficient Ni>NmaxIf yes, the use is degraded; minimum correction factor Ni≤NmaxIf the matching is not successful, the power source is degraded.
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