CN112558383B - Be used for target detection under water to zoom lighting apparatus - Google Patents

Abstract

The invention provides a zoom lighting device for underwater target detection, which comprises a lens cone, a lampshade, a zoom structure and a light source, wherein the lens cone is arranged on the lampshade; the light source is arranged in the lens barrel, and the lampshade is arranged at one end of the lens barrel and connected with the lampshade; the zooming structure is arranged at the front end of the light source; the illumination range can be adjusted, so that the illumination device can meet the requirements of various illumination scenes.

Description

Be used for target detection under water to zoom lighting apparatus

Technical Field

The invention belongs to underwater detection equipment, and particularly relates to zoom illumination equipment.

Background

When the underwater unmanned aerial vehicle is used for underwater exploration, corresponding light sources are required to be equipped, and underwater shooting and photographing can be completed. However, the underwater environment is complex and is influenced by impurities in water, ocean depth and other factors, so that the lighting effect is greatly limited. When the underwater unmanned aerial vehicle observes different underwater targets, the requirements for illumination are different. In certain environments, it is desirable to focus the glare, and sometimes to enhance the ambient light, to enlarge the viewing surface, and to diffuse the light in the viewing environment. The existing underwater searchlight cannot well switch the illumination range.

Disclosure of Invention

The invention provides the zoom illumination equipment for detecting the underwater target, and the illumination range can be adjusted, so that the illumination equipment can meet the requirements of various illumination scenes.

The invention is realized by the following modes:

a zoom lighting device for underwater target detection is characterized by comprising a lens cone, a lampshade, a zoom structure and a light source; the light source is arranged in the lens barrel, and the lampshade is arranged at one end of the lens barrel and connected with the lens barrel; the zooming structure is arranged at the front end of the light source.

Further, the zooming structure comprises a focusing lens; a plurality of astigmatic lenses and condensing lenses are circumferentially distributed on the focusing lens; the astigmatic lens and the condenser lens are arranged indirectly; the astigmatic lens or condenser corresponds to the light source; the astigmatic lens is used for dispersing the light source; the condenser is used for condensing the light source to the center of the focusing lens; a lens is arranged at the center of the focusing lens; the focusing mirror can be controlled to rotate by the adjusting mechanism.

Furthermore, the astigmatic lens adopts a Fresnel lens; the light source is arranged at the focus of the Fresnel lens.

Furthermore, the condenser adopts an optical reflector to reflect the light source to the center of the focusing lens; the center of the focusing lens adopts a lens to convert the light condensed at the center of the focusing lens into parallel light beams.

Furthermore, the lens cone is provided with a plurality of limiting strips; the edge of the focusing mirror is provided with a plurality of limiting blocks matched with the limiting strips; the adjusting mechanism controls the focusing mirror to rotate through the limiting block.

Further, the adjusting mechanism comprises an adjusting ring; the adjusting ring is connected with the limiting block; the adjusting ring is connected with a base through a plurality of supporting bars; the base is adjusted by a motor.

Furthermore, the adjusting mechanism comprises an electromagnetic block and a magnetic block; the electromagnetic block is arranged on the limiting strip; the magnetic block is arranged on the limiting block.

The invention has the beneficial effects that: a lighting device capable of zooming is provided, which can switch between scattering and focusing illumination, does not need to improve the power of illuminating light, and can realize the purpose of light focusing.

Figure of the invention

FIG. 1 is a schematic cross-sectional view of example 1 of the present invention;

FIG. 2 is an exploded view of example 1 of the present invention;

FIG. 3 is a schematic view of an astigmatic lens;

FIG. 4 is a schematic view of a collection optic;

FIG. 5 is a schematic sectional view of example 2;

FIG. 6 is an exploded view of example 2;

fig. 7 is a schematic view of source tracing monitoring of the unmanned aerial vehicle according to embodiment 3;

fig. 8 is a schematic view of another source monitoring system.

Detailed Description

Example 1

A zoom lighting device for underwater target detection comprises alens barrel 1, alampshade 2, a zoom structure 3 and alight source 4; thelight source 4 is arranged in thelens barrel 1, and thelampshade 2 is arranged at one end of thelens barrel 1 and is connected with thelens barrel 1; the zooming structure 3 is arranged at the front end of thelight source 4. The zooming structure 3 comprises a focusinglens 31; a plurality ofastigmatic lenses 311 andcondenser lenses 312 are circumferentially distributed on the focusinglens 31; theastigmatic lens 311 and thecondenser lens 312 are arranged indirectly; theastigmatic lens 311 or thecondenser lens 312 corresponds to thelight source 4; theastigmatic lens 311 is used to disperse thelight source 4; thecondenser 312 is used for focusing thelight source 4 to the center of the focusinglens 31; alens 313 is arranged at the center of the focusinglens 31; the focusing lens is controlled to rotate by an adjusting mechanism 32. The light source comprises acircuit board 41 and a plurality ofLED lamps 42, and the LED lamps are arranged on the circuit board and distributed in a circumferential manner; and corresponds to thecollection mirror 312; when the focusing lens rotates, the LED lamp corresponds to thediffuser 311.

In the embodiment, 4 LED lamps are circumferentially arranged on the circuit board at intervals of 90 degrees; the 4 collecting lenses are circumferentially arranged on the focusing lens at intervals of 90 degrees; 4 astigmatic mirrors are circumferentially arranged on the focusing mirror at intervals of 90 degrees; when light is needed to be dispersed, the light dispersing lens is adjusted to correspond to the LED lamp, and when light is needed to be focused, the focusing lens is rotated to enable the focusing lens to correspond to the LED lamp.

Theastigmatic lens 311 is a fresnel lens; thelight source 4 is arranged on the Fresnel lens.

The fresnel lens can convert the light rays at the focal point into a plurality of parallel light beams, and thus can disperse the light rays.

Thelight source 4 is not arranged at the focus of the fresnel lens, so that light scattering can be realized, but light rays are more dispersed, and the use in an underwater environment is not facilitated.

Thecondenser 312 adopts an optical reflector to reflect the light source to the center of the focusinglens 31; the focusing lens center adopts alens 313 to convert the light condensed at the focusing lens center into parallel light beams.

The condenser lens aims to converge the light of each LED lamp towards the center, and the convergence point of the center is the focus of the lens, so that the light focused by the LED lamp can be converted into parallel light beams through the lens to be emitted. And because the central light rays are converged by the LED lamps, the LED lamp has stronger brightness. Preferably, an LED lamp can be added in the middle of the light source to further improve the brightness.

Thelens barrel 1 is provided with a plurality of limitingstrips 11; the edge of the focusing mirror 3 is provided with a plurality of limitingblocks 33 matched with the limitingstrips 11; the adjusting mechanism controls the focusingmirror 11 to rotate through thelimiting block 33.

The adjustment mechanism 32 includes anadjustment ring 321; the adjustingring 321 is connected with thelimiting block 33; the adjustingring 321 is connected with abase 323 through a plurality of supportingbars 322; thebase 323 is adjusted by amotor 324.

The motor rotates to drive the base and the adjusting ring to rotate, the adjusting ring drives the focusing mirror to rotate through the limiting block, and light irradiated by the light source is switched between light condensation and light scattering. The limiting block is in sliding fit with the limiting strip, when the motor rotates to a certain extent, the limiting block stops rotating when abutting against the edge of the limiting strip, and the purpose of limiting is achieved.

Example 2

The structure is the same as that ofembodiment 1 except for the adjusting mechanism, and the adjusting mechanism adopted in this embodiment is as follows:

the adjusting mechanism 32 comprises twoelectromagnetic blocks 324 and amagnetic block 325; theelectromagnetic blocks 324 are arranged at the two side ends of the limiting strip; themagnetic block 325 is arranged on the limiting block.

Through for the circular telegram of one end electromagnetism piece, make the electromagnetism piece attract the magnetic path, drive focusing mirror and rotate, when needs switch over the mode of shining, one end electromagnetism piece outage, the circular telegram of other end electromagnetism piece, then, the magnetic path can be close to the other end to the realization is switching between spotlight and astigmatism.

Example 3

The lighting equipment is arranged on the unmanned aerial vehicle, and underwater organisms in a polluted area are dispersed through switching of condensation and astigmatism; the method is characterized in that an area of pollution degree is confirmed before dispersion, wherein a circle with the pollution source as a circle center and the pollution amount changing less than 10% is set as a heavy pollution circle; determining a middle pollution ring when the pollution amount is changed to 10-50%; and setting the pollution amount change of more than 50% as a light pollution ring, presenting the light pollution ring through a visualization system, and early warning the light pollution ring to a control center.

The source of contamination is determined by:

s101: the underwater unmanned aerial vehicle is thrown in a polluted water area and submerged, water quality data detection is carried out once when the underwater unmanned aerial vehicle submerges for a certain depth, and the water quality data detection is compared with a previous point of numerical value until the water quality data detection meets a preset condition;

s102: on the height plane positioned in S101, marking as a starting point, detecting the water quality pollution amount, randomly selecting a certain angle and walking for a certain step length, detecting the water quality pollution amount for the second time, then randomly selecting the angle and walking for a certain step length, and detecting the water quality pollution amount for the third time; and comparing the values of the starting point, the second detection and the third detection;

s103: point taking detection: after data comparison, selecting a point with the largest pollution value as a circle center, taking the distance from the point with the largest pollution value as a radius, and taking the point as a starting point to perform circular path inspection;

s104: sequentially carrying out water quality detection once when the circular path passes through an angle of 90 degrees, wherein 4 detection points are formed on each circle, and selecting 3 points forming an included angle of 90 degrees, 180 degrees and 270 degrees with the circle center for detection to form 4 detection points distributed in the circle;

if the pollution amount of the detection point exceeds the circle center, returning to the step S103, and detecting from the newly entered point;

and if the pollution amount of all the detection points is less than the pollution amount of the circle center, judging that the detection points are close to the pollution source.

And S104, after judging that the pollution source is close to, reducing the step size from the step S102 to the step S104.

As shown in fig. 7, specifically, the underwater unmanned aerial vehicle starts to dive at point a, records the pollution amount p (n) every dive distance n, continues to dive when p (n + 1) > p (n), and stops diving if p (n + 1) < p (n), and uses the depth of the highest pollution amount as a detection surface.

Then, detecting the pollution amount p (a 1) at a detection surface starting point a, randomly selecting a certain angle and walking a certain step length to detect the water quality pollution amount p (a 2), randomly selecting the angle and walking a certain step length, and detecting the water quality pollution amount p (a 3) for the third time; a3 and a1 are not necessarily the same. And then comparing p (a 1), p (a 2) and p (a 3), selecting two points with the maximum p value to be connected, and if p (a 3) > p (a 2) > (a 1), performing point-taking detection once by taking p (a 3) as a center and the distance from p (a 2) as a radius, and additionally selecting points b, c and d for detection, wherein the points a2, b, c and d are separated by an angle of 90 degrees. Meanwhile, comparing p (b), p (c), p (d) with p (a 3), and then entering into judgment,

(1) if at least one point has a value higher than p (a 3), continuously and repeatedly selecting two points with the highest pollution amount for carrying out point taking detection in the repeated S103;

(2) and if the pollution amount of all the detection points is less than the pollution amount of the circle center, judging that the detection points are close to the pollution source.

After the pollution source is approached, the step length can be shortened, and the point detection can be continuously carried out in a small range.

And an underwater unmanned aerial vehicle can be used for underwater observation in a small range to determine a final pollution source.

After the approach of the contamination source is judged, the steps from S102 to S104 are newly performed to reduce the step size.

In order to further optimize and confirm the pollution source, in the step S104, a straight line is made for the first detection point and the third detection point of the circumference, a straight line is made for the second detection point and the fourth detection point, the water area is divided into 4 fan-shaped areas, and then judgment is carried out;

(1) if the pollution amount of 3 detection points is larger than that of the dots, preliminarily judging that a plurality of pollution sources are suspected to exist and marking the positions of the dots, selecting two dots with the highest pollution amount, and continuing to perform dot-taking detection;

(2) if the pollution amount of 2 detection points is larger than that of the dots;

(21) if the second detection point and the fourth detection point are both larger than the dots, judging that a plurality of polluted points are possible, and firstly taking a certain point from the polluted points and the dots to perform point taking detection;

(22) if all the detection points in the S102 are located in a sector area, and one detection point and adjacent detection points in the sector area are larger than the dots, judging that a plurality of polluted points possibly exist, and firstly taking one of the points and the dots to perform point taking detection;

(23) and if one detection point does not fall into one sector in the S102, selecting two points with the highest pollution amount to perform point-taking detection.

Specifically, as in example 1, a3 and c, b and d are connected by a connecting line; forming 4 sectors.

As shown in fig. 7, if p (b) > p (c) > p (d) > p (a 3), it is determined that there are multiple contamination sources, b and c are selected for point detection until the contamination sources are found, and then the process returns to a3, and d and a3 are used for point detection to find the contamination sources.

If p (b) and p (d) are both larger than p (a 3), judging that a plurality of pollution sources are suspected to exist, firstly selecting a3 and b for point detection, and searching for the pollution sources; and returning to the point a3, and performing point detection by using a3 and d to find a pollution source.

As shown in fig. 8, if p (b) and p (c) are both greater than p (a 3), and a1, a2 and a3 are all in the same sector, then it is determined that there are multiple contamination sources, and point detection is performed at a3 and b to find the contamination source; then returning to a3, between a3 and c, a source of contamination is sought.

If a1 is outside the sector, point detection is performed with b and c to find the pollution source.

Before the unmanned aerial vehicle traces the source of the pollution source, the multi-beam side-scan sonar detection modeling can be firstly adopted for a shallow sea water area, and a water area environment map is established. Thereby realize making unmanned aerial vehicle can be in the more accurate location of relevant waters.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. A zoom lighting device for underwater target detection is characterized by comprising a lens cone, a lampshade, a zoom structure and a light source; the light source is arranged in the lens barrel, and the lampshade is arranged at one end of the lens barrel and connected with the lens barrel; the zooming structure is arranged at the front end of the light source; the zooming structure comprises a focusing lens; a plurality of astigmatic lenses and condensing lenses are circumferentially distributed on the focusing lens; the astigmatic lens and the condenser lens are arranged indirectly; the astigmatic lens or condenser corresponds to the light source; the astigmatic lens is used for dispersing the light source; the condenser is used for condensing the light source to the center of the focusing lens; a lens is arranged at the center of the focusing lens; the focusing mirror can be controlled to rotate by the adjusting mechanism.

2. The illumination device as recited in claim 1, wherein the diffuser is a fresnel lens; the light source is arranged at the focus of the Fresnel lens.

3. The illumination device as claimed in claim 1, wherein the light collecting mirror is an optical reflector for reflecting the light source to the center of the focusing mirror; the center of the focusing lens adopts a lens to convert the light condensed at the center of the focusing lens into parallel light beams.

4. The illumination device according to claim 1, wherein the lens barrel is provided with a plurality of position-limiting strips; the edge of the focusing mirror is provided with a plurality of limiting blocks matched with the limiting strips; the focusing mechanism further comprises an adjusting mechanism, and the adjusting mechanism controls the focusing mirror to rotate through the limiting block.

5. A lighting device as recited in claim 4, wherein said adjustment mechanism comprises an adjustment ring; the adjusting ring is connected with the limiting block; the adjusting ring is connected with a base through a plurality of supporting bars; the base is adjusted by a motor.

6. The illumination device as recited in claim 4, wherein the adjustment mechanism comprises an electromagnetic block and a magnetic block; the electromagnetic block is arranged on the limiting strip; the magnetic block is arranged on the limiting block.

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