CN-116297350-B - Ultra-large-caliber carrier-based multispectral oil spill photoelectric optical axis adjustment method

CN116297350BCN 116297350 BCN116297350 BCN 116297350BCN-116297350-B

Abstract

The invention discloses an ultra-large caliber ship-based multispectral oil spilling photoelectric optical axis adjusting method, which comprises the steps of firstly aligning an auto-collimation theodolite with a large caliber collimator, arranging multispectral oil spilling photoelectric between the large caliber collimator and the auto-collimation theodolite, then replacing a high-power ultraviolet laser in a Cassegrain detection system with a collimation 780nm light source, focusing light emitted by the collimation 780nm light source to the center of a target surface of the large caliber collimator, and finally sequentially enabling the optical axis of a visible light imaging system to be parallel to the optical axis of an emission optical path, the optical axis of a medium wave infrared imaging system to be parallel to the optical axis of the visible light imaging system and the optical axis of a medium wave infrared imaging system by adjusting the position of the multispectral oil spilling photoelectric. The invention can complete the optical axis adjustment of the multispectral spilled oil photoelectric based on the existing caliber collimator without adding other equipment, thereby reducing the cost.

Inventors

ZHOU LONGMEI
QU SONG
XUE MIN
JIANG DONGLIANG
WANG PEIPEI

Assignees

河北汉光重工有限责任公司

Dates

Publication Date: 20260508
Application Date: 20221117

Claims (4)

1. The ultra-large caliber carrier-based multispectral oil spilling photoelectric optical axis adjusting method is characterized in that equipment adopted by the adjusting method comprises multispectral oil spilling photoelectric, a large caliber collimator, an auto-collimation theodolite, a collimation 780nm light source and an open crystal, wherein the caliber of the large caliber collimator is smaller than the caliber of a hatch of a sensor bearing cabin of the multispectral oil spilling photoelectric; The adjustment method comprises the steps of firstly, aligning an auto-collimation theodolite with a large-caliber collimator, placing a multispectral oil spilling photoelectric between the large-caliber collimator and the auto-collimation theodolite, aligning a Cassegrain detection system of the multispectral oil spilling photoelectric with the large-caliber collimator, and attaching a flat crystal on a reference surface of the multispectral oil spilling photoelectric; Then, the high-power ultraviolet laser in the Cassegrain detection system is replaced by a collimation 780nm light source, light emitted by the collimation 780nm light source is focused to the center of the target surface of the large-caliber collimator, and fluorescent light returned by the large-caliber collimator is focused to the center of the fluorescent sensor; The Cassegrain detection system comprises an emission light path, a receiving light path, a high-power ultraviolet laser and a fluorescence sensor, wherein two turning reflectors are arranged on the emission light path, a focusing mirror is arranged on the receiving light path, near infrared light after frequency multiplication sent by the high-power ultraviolet laser is reflected by the two turning reflectors and collimated and emitted to a target to be detected by the emission light path, fluorescence formed by exciting a target oil spilling position by the receiving light path is focused by the focusing mirror and then converged on the fluorescence sensor, and the fluorescence sensor performs photoelectric conversion on the received fluorescence and finally analyzes whether the fluorescence is an oil spilling point; After the high-power ultraviolet laser is replaced by a collimation 780nm light source, the mode of focusing the light emitted by the collimation 780nm light source to the center of the target surface of the large-caliber collimator is that the angle of a turning reflector is adjusted; Finally, the optical axis of the visible light imaging system is parallel to the optical axis of the emission light path, the optical axis of the medium wave infrared imaging system is parallel to the optical axis of the visible light imaging system, and the optical axis of the laser range finder is parallel to the optical axis of the medium wave infrared imaging system by adjusting the positions of the multispectral oil spilling photoelectricity and the azimuth angle and the pitch angle of the sensor bearing cabin in sequence, so that the optical axis adjustment of the multispectral oil spilling photoelectricity is realized.
2. The method for adjusting the photoelectric optical axis of ultra-large caliber carrier-based multispectral spilled oil according to claim 1, wherein after the flat crystal is pasted on the reference surface of the multispectral spilled oil photoelectric, and before the high-power ultraviolet laser in the Cassegrain detection system is replaced by a collimation 780nm light source, the azimuth angle and the pitch angle of a sensor bearing cabin are adjusted, so that the autocollimator theodolite can see the superposition of the self cross wire and the cross wire reflected by the flat crystal.
3. The method for adjusting the photoelectric optical axis of ultra-large-caliber carrier-borne multispectral spilled oil according to claim 2, wherein when the optical axis of the visible light imaging system is parallel to the optical axis of the emission light path, the optical axis of the medium wave infrared imaging system is parallel to the optical axis of the visible light imaging system, and the optical axis of the laser range finder is parallel to the optical axis of the medium wave infrared imaging system in sequence, the specific steps are as follows: The first step, the position of multispectral oil spilling photoelectricity is adjusted, so that part of light paths in an emission light path and the light paths of a visible light imaging system are both arranged in the effective caliber of a large-caliber collimator; Adjusting the azimuth angle and the pitch angle of the sensor bearing cabin, enabling light of the collimation 780nm light source to be converged at the center of a target surface of the sensor bearing cabin through the large-caliber collimator after passing through an emission light path, adjusting the azimuth angle and the pitch angle of the visible light imaging system relative to the sensor bearing cabin, enabling the cross image of the large-caliber collimator to be overlapped with the cross silk of the visible light imaging system, and adjusting the optical axis of the visible light imaging system to be parallel to the optical axis of the emission light path; The third step, adjusting the position of multispectral spilled oil photoelectricity and the azimuth angle and pitch angle of a sensor bearing cabin, so that the optical path of a visible light imaging system and the optical path of a medium wave infrared imaging system are both arranged in the effective caliber of a large caliber collimator, and adjusting the azimuth angle and pitch angle of the visible light imaging system relative to the sensor bearing cabin, so that when the self cross wire of the visible light imaging system is aligned with the cross image of the large caliber collimator, the self cross wire of the medium wave infrared imaging system is aligned with the cross image of the large caliber collimator, thereby realizing the optical axis adjustment of the medium wave infrared imaging system, and enabling the optical axis of the medium wave infrared imaging system to be parallel with the optical axis of the visible light imaging system; and fourthly, adjusting the photoelectric positions of multispectral spilled oil so that the light path of the medium wave infrared imaging system and the light path of the laser range finder are both arranged in the effective caliber of the large-caliber collimator, adjusting the azimuth angle and the pitch angle of the laser range finder relative to the sensor bearing cabin so that the laser emission point of the laser range finder is converged on the target surface of the large-caliber collimator, and adjusting the optical axis of the laser range finder at the center of a cross wire of the medium wave infrared imaging system so that the optical axis of the laser range finder is parallel to the optical axis of the medium wave infrared imaging system.
4. A method for adjusting a multi-spectral oil spill photoelectrooptic axis of a very large caliber carrier-based vehicle as claimed in any one of claims 1 to 3, wherein the placement position and height of the autocollimation theodolite are related to the placement position of the multi-spectral oil spill photoelectrode and the installation position of the flat crystal, and when the autocollimation theodolite is placed, the autocollimation theodolite and the large caliber collimator can be aligned by rotating the azimuth of the multi-spectral oil spill photoelectrode, and the autocollimation theodolite can also be aligned with the flat crystal.

Description

Ultra-large-caliber carrier-based multispectral oil spill photoelectric optical axis adjustment method Technical Field The invention belongs to the technical field of optics, and particularly relates to an ultra-large-caliber carrier-based multispectral oil spilling photoelectric optical axis adjusting method. Background In recent years, the occurrence probability of sudden ocean oil spill is continuously increased, so that the ocean environment is greatly damaged, and the life of coastal residents is seriously influenced. The photoelectric detection technology can detect the oil spill type through a fluorescent technology, and simultaneously has multiple functions of day and night target position imaging monitoring, target point distance detection and the like through multispectral systems such as visible light imaging, infrared imaging, laser ranging and the like, so that the ultra-large-caliber carrier multispectral oil spill photoelectric and the optical axis debugging method thereof are more important. The optical axis adjusting method of the multispectral photoelectric system mainly comprises a projection target plate method, a laser optical axis instrument method, a pentaprism method, a large-caliber collimator method and the like. For example, CN107796337B carries out light beam translation through a plane reflector, CN102589605A carries out optical axis debugging of different wave bands through a precise optical axis translation and rotation mechanism, CN109870294A carries out large-range diameter expansion through a prism, a large-span multi-optical axis parallelism corrector of a Siemens company also carries out large-span multi-spectrum correction through the precise optical axis translation and rotation mechanism, CN109387163A breaks through the aperture limitation of a collimator through a reflection collimator and two groups of reflector mechanisms to generate parallel light beams of several meters to several tens of meters, a projection target plate method is greatly influenced by weather, the laser optical axis instrument system is difficult to assemble and has strong specificity, a large number of introduction links are utilized by an optical axis translation thought adjustment method, adjustment is complex, a pentaprism method is greatly influenced by the moving precision in the test process, the large-aperture collimator method carries out adjustment, and is greatly limited by the aperture of the collimator, and the cost is high. Disclosure of Invention In view of the above, the invention provides a method for adjusting the optical axis of the ultra-large caliber carrier-based multispectral spilled oil photoelectric optical axis, which can finish the adjustment of the optical axis of the multispectral spilled oil photoelectric optical axis on the basis of the existing caliber collimator, does not need to add other equipment, and reduces the cost. The invention is realized by the following technical scheme: The ultra-large caliber ship-based multispectral oil spilling photoelectric optical axis adjusting method comprises multispectral oil spilling photoelectric, a large caliber collimator, an auto-collimation theodolite, a collimation 780nm light source and an open-loop crystal, wherein the caliber of the large collimator is smaller than the caliber of a hatch of a sensor bearing cabin of the multispectral oil spilling photoelectric; The adjustment method comprises the steps of firstly, aligning an auto-collimation theodolite with a large-caliber collimator, placing a multispectral oil spilling photoelectric between the large-caliber collimator and the auto-collimation theodolite, aligning a Cassegrain detection system of the multispectral oil spilling photoelectric with the large-caliber collimator, and attaching a flat crystal on a reference surface of the multispectral oil spilling photoelectric; Then, the high-power ultraviolet laser in the Cassegrain detection system is replaced by a collimation 780nm light source, light emitted by the collimation 780nm light source is focused to the center of the target surface of the large-caliber collimator, and fluorescent light returned by the large-caliber collimator is focused to the center of the fluorescent sensor; Finally, the optical axis of the visible light imaging system is parallel to the optical axis of the emission light path, the optical axis of the medium wave infrared imaging system is parallel to the optical axis of the visible light imaging system, and the optical axis of the laser range finder is parallel to the optical axis of the medium wave infrared imaging system by adjusting the positions of the multispectral oil spilling photoelectricity and the azimuth angle and the pitch angle of the sensor bearing cabin in sequence, so that the optical axis adjustment of the multispectral oil spilling photoelectricity is realized. Further, after the flat crystals are pasted on the reference plane of the multispectral oil spilling photo