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Active target and method for calibrating beam-target coupling sensor on line by using same

A calibration method and target coupling technology, applied in the direction of optical devices, instruments, measuring devices, etc., can solve the problems of inability to calibrate sensor sensor parameters, poor beam-target coupling accuracy, etc., and achieve the effect of improving convenience and calibration accuracy

Active Publication Date: 2014-05-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the existing technology cannot realize the online calibration of the sensor and the calibration of the sensor parameters, and the beam-target coupling accuracy is poor, an online calibration method using an active target-to-beam-target coupling sensor is proposed.

Method used

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  • Active target and method for calibrating beam-target coupling sensor on line by using same
  • Active target and method for calibrating beam-target coupling sensor on line by using same
  • Active target and method for calibrating beam-target coupling sensor on line by using same

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specific Embodiment approach 1

[0028] Specific implementation mode 1. Combination figure 1 Describe this embodiment in detail, the active target described in this embodiment, it comprises target rod 1, positioning mark 2, support seat 3, first circuit board 4, second circuit board 5, upper road CCD image sensor 6, lower road CCD Image sensor 7, first housing 8 and second housing 9,

[0029] One side of the support base 3 is fixed with a target rod 1, the support base 3 and the target rod 1 are coaxially connected, the inside of the support base 3 near the side of the target rod 1 is fixed with a positioning mark 2, and the other side of the support base 3 The first shell 8 and the second shell 9 are respectively fixedly installed on the sides, and the first shell 8 and the second shell 9 are distributed symmetrically about the coaxial line of the support base 3 and the target rod 1,

[0030] The first circuit board 4 and the upper road CCD image sensor 6 are located in the inside of the first housing 8, t...

specific Embodiment approach 2

[0034] Specific Embodiment 2. The difference between this embodiment and the active target described in Specific Embodiment 1 is that the width ranges of the cross lines of the cross marks drawn by laser on the upper CCD image sensor 6 and the lower CCD image sensor 7 are both : 8μm~12μm.

specific Embodiment approach 3

[0035] Specific embodiment three, combine figure 2 Describe this embodiment in detail. This embodiment is based on the online calibration method using the active target-to-beam-target coupling sensor described in the first embodiment.

[0036] The upper monitoring unit of the beam target coupling sensor comprises an upper CCD image sensor 10, an upper microscope objective lens 11 and an upper laser reflector 12, and the lower monitoring unit of the beam target coupling sensor comprises a lower CCD image sensor 17, a lower laser reflector 18 and a lower laser reflector 12. The microscope objective lens 19, the upper monitoring unit and the lower monitoring unit are used to detect the imaging of the target, the middle and upper part of the monitoring unit of the beam target coupling sensor includes the middle and upper road CCD image sensor 13 and the middle and upper microscope objective lens 14, the middle and lower part of the beam target coupling sensor The monitoring unit ...

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Abstract

The invention relates to an active target and a method for calibrating a beam-target coupling sensor on line by using the same and aims to solve the problems that a sensor cannot be calibrated on line, sensor parameters cannot be corrected on line, and the beam-target coupling precision is poor in the prior art. The method comprises the following steps of moving the active target into a target chamber center; opening a laser device, and 9 upper paths of laser emitted by the laser device enter a photosensitive surface of a charged coupled device (CCD) image sensor of the active target to form 9 upper light spots; and 9 lower paths of laser emitted by the laser device enter a photosensitive surface of a CCD image sensor of the active target to form 9 lower light spots; closing the laser device when the upper 9 light spots and the lower 9 light spots are respectively coincident with the centers of 9 upper cross curves and 9 lower cross curves; imaging 9 upper cross signs and 9 lower cross signs of the active target through upper and lower monitoring units in the field of view of a sensor, and calculating the positions of the cross signs on the CCD image sensor; opening all paths of laser, calculating the positions of all the light spots on the CCD of the beam-target coupling sensor; and calibrating. The method is applicable to the technical field of high-precision laser target shooting of large-scale laser drivers.

Description

technical field [0001] The invention relates to the technical field of high-precision laser targeting, in particular to an active target and an online calibration method using the active target-to-beam target coupling sensor. Background technique [0002] Inertial confinement fusion uses high-energy particle beams to compress deuterium-tritium target pellets to a high density of several hundred grams per cubic centimeter within a few nanoseconds, and the pressure is hundreds of millions of atmospheres, so that the target pellets form hot spots locally and ignite. combustion. In the late 1980s, American scientists successfully drove inertial confinement nuclear fusion using the radiation energy of underground nuclear explosions, confirming the feasibility of this technical route. [0003] With the emergence of laser technology, people began to study the use of high power density and excellent directivity of strong lasers to bombard deuterium-tritium targets, allowing them to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
Inventor 刘炳国刘国栋陈凤东庄志涛胡涛
Owner HARBIN INST OF TECH