CN110913206B - Device and method for detecting exposure synchronism of camera of multi-view aerial camera - Google Patents
Device and method for detecting exposure synchronism of camera of multi-view aerial camera Download PDFInfo
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- CN110913206B CN110913206B CN201911189518.3A CN201911189518A CN110913206B CN 110913206 B CN110913206 B CN 110913206B CN 201911189518 A CN201911189518 A CN 201911189518A CN 110913206 B CN110913206 B CN 110913206B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
Abstract
The invention discloses a device and a method for detecting the exposure synchronism of a multi-view aerial camera, comprising a supporting frame; a camera; the corner mechanism comprises a first corner mechanism, a second corner mechanism and a third corner mechanism, the first corner mechanism, the second corner mechanism and the third corner mechanism are all installed on the supporting frame, the first corner mechanism is connected with the camera and used for driving the camera to rotate, the second corner mechanism is used for driving the supporting frame to rotate, and the third corner mechanism is used for driving the first corner mechanism to rotate. The invention can shoot the multi-view aerial camera by aligning the same target in the horizontal direction in sequence and singly, thereby playing the functions of mechanical clamping and angle alignment.
Description
Technical Field
The invention belongs to the technical field of camera exposure synchronism detection, and particularly relates to a device and a method for detecting camera exposure synchronism of a multi-view aerial camera.
Background
The multi-view aerial photography instrument is a novel geographic information mapping technology, and integrates a plurality of (common 5) cameras on the same flight platform at different angles, so that different surface image photos of the same ground object are collected in the process of once photographing, and the photos are processed by post software to form a vector three-dimensional model of the photographed ground object.
Because the space attitude information of the aircraft needs to be collected at the moment of photographing (air-to-three encryption technology), the air disturbance exists in the flying process, the space attitude of the aircraft is constantly changed, and five photos shot by the same exposure share one attitude data (the attitude data of the aircraft collected at the moment of sending out an exposure signal), so the exposure hysteresis of the five cameras is related to the accuracy of the instant space attitude data of a single photo, and the accuracy or precision of later-stage vector modeling is directly influenced, so that the detection of the exposure synchronism of the five cameras of the multi-view aerial camera is necessary.
In addition, all lenses are integrated after being aligned with the same moving target for photographing detection, errors are easily caused in the integration process, the working of the camera is abnormal, rework is caused, time is consumed, and the error rate is high; the field of view of the camera needs to be adjusted after the whole product is disassembled, which is time-consuming and labor-consuming.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the device and the method for detecting the exposure synchronism of the multi-view aerial camera, which can realize that five cameras are aligned to the same target in a short distance to take a picture and have the functions of mechanical clamping and angle alignment.
In order to solve the technical problem, the technical scheme of the invention is as follows: a camera exposure synchronization detection device for multi-view aerial camera comprises,
a support frame;
a camera;
the rotating mechanisms comprise a first rotating mechanism, a second rotating mechanism and a third rotating mechanism, the first rotating mechanism, the second rotating mechanism and the third rotating mechanism are all installed on the supporting frame, the first rotating mechanism is connected with the camera and used for driving the camera to rotate, the second rotating mechanism is used for driving the supporting frame to rotate, and the third rotating mechanism is used for driving the first rotating mechanism to rotate.
Preferably, the supporting frame comprises a first cross beam, a second cross beam and two vertical beams which are arranged in parallel from top to bottom, the top ends of the two vertical beams are respectively and vertically connected with the two ends of the first cross beam, and the bottom ends of the two vertical beams are respectively and vertically connected with the two ends of the second cross beam.
Preferably, the first rotating mechanism comprises a first rotating shaft, an angular contact ball bearing, a bearing sleeve, a spring and a limiting steel ball, the first rotating shaft is vertically and fixedly connected to the inner side of the first cross beam, and the camera is detachably connected to the tail end of the bearing sleeve;
the angular contact ball bearing is fixedly arranged in the bearing sleeve, and the angular contact ball bearing is sleeved on the periphery of the first rotating shaft;
a plurality of first blind holes are circumferentially formed in the bearing sleeve, a plurality of first conical holes are formed in the inner side of the first cross beam around the first rotating shaft, the first conical holes and the first blind holes are arranged in a one-to-one correspondence mode, first limiting steel balls are arranged in the first conical holes, first springs are arranged in the first blind holes, the first springs are in contact with the first limiting steel balls, and the inner diameter of each first spring is smaller than that of each first limiting steel ball.
Preferably, the second rotating mechanism comprises a second rotating shaft, a first bearing, a shaft sleeve and a first bearing cover, the second rotating shaft is vertically and fixedly connected to the inner side of a second cross beam of the supporting frame, the second rotating shaft, the first bearing and the shaft sleeve are sequentially arranged from inside to outside, the first bearing cover is provided with a first clamping surface, and the clamping surface of the first bearing cover is attached to the end surfaces of the second rotating shaft, the first bearing and the shaft sleeve;
a plurality of second blind holes are circumferentially formed in the second cross beam, a plurality of second conical holes are formed in the first bearing cover around the second rotating shaft, the second conical holes and the second blind holes are arranged in a one-to-one correspondence mode, second limiting steel balls are arranged in the second conical holes, second springs are arranged in the second blind holes, the second springs are in contact with the second limiting steel balls, and the inner diameter of each second spring is smaller than that of each second limiting steel ball.
Preferably, the device further comprises four reflectors, wherein a mounting plate is arranged on the first bearing cover, and the reflectors are fixedly arranged on the mounting plate through a flexible shaft.
Preferably, third rotary mechanism includes third rotation axis, second bearing lid, two perpendicular roof beams all include upper side roof beam and lower side roof beam and but mobile cover has carries out spacing stopper to the upper side roof beam on at least one perpendicular roof beam, and the third rotation axis passes upper side roof beam and lower side roof beam rotation connection and third rotation axis and upper side roof beam fixed connection, and the second bearing is located the lower side roof beam outside and overlaps and establish in third rotation axis periphery, the second bearing lid has the second and presss from both sides tight face just this that the second bearing lid has presss from both sides tight face and the terminal surface laminating setting of second bearing and third rotation axis.
Preferably, the number of the angular contact ball bearings is two, and the two angular contact ball bearings are compressed by a pre-tightening nut.
Preferably, the number of the second bearings is two, and the two second bearings are separated by a spacer ring.
Preferably, the camera includes a central lens and four side lenses.
A detection method based on a device for detecting the exposure synchronism of a multi-view aerial camera comprises the following steps:
s1: adjusting the upper side beam and the lower side beam to be positioned on the same straight line, moving the limiting block upwards to abut against the upper side beam and then fastening the limiting block, wherein the field of view of the central lens of the camera is vertically downward, and simultaneously adjusting the angles of the four reflectors to enable the fields of view of the four side-looking lenses to be positioned right below the central lens, and the camera starts to expose;
s2: the four reflectors are taken down, the limiting block is unscrewed, the upper side beam is rotated to drive the first cross beam to rotate, when the upper side beam is perpendicular to the lower side beam, the limiting block is fastened after the limiting block is moved upwards to abut against the upper side beam, at the moment, the optical axis of the central lens field of the photographic instrument is horizontal, and the central lens shoots;
s3: after the central lens finishes shooting, rotating the second rotating shaft by 45 degrees, and automatically positioning the camera to enable the side-looking lens to be aligned to the right front, namely, the main optical axis of the view field of the side-looking lens is in a horizontal state for shooting; repeating until the second rotating shaft rotates for 360 degrees;
s4: rotating the first rotating shaft by 45 degrees, and automatically positioning the camera for shooting; and repeating the steps until the first rotating shaft rotates 360 degrees, and finishing the action that all the main optical axes of the side-looking lens view field are horizontally shot towards the right front.
Compared with the prior art, the invention has the advantages that:
(1) the synchronism detection device has the functions of camera clamping and angle collimation in the process of calibration, and does not need detection personnel to hold the aerial camera for a long time in the process of calibration, so that the labor consumption is greatly reduced, and the detection error is also reduced;
(2) the invention can carry out exposure synchronism detection in a form of a complete machine, solves the problems that all lenses need to be aligned to the same moving target for shooting and then integrated together after detection is finished in the prior art, if an error exists in the integration process, the camera does not work normally, the shell needs to be disassembled for detection, and if the synchronism needs to be detected again after the control circuit is disassembled, the operation is more complicated and the error rate is high, and greatly reduces the workload;
(3) the aerial camera calibration device is simple in structure and easy to maintain, if the aerial camera calibration device is fixed at a fixed position of a calibration field and is not moved, the shooting angles of calibration pictures of the aerial cameras in batch production are consistent, the aerial camera calibration device has the characteristics of standardization and uniformity for the inspection and acceptance of batch products, and even can form enterprise standards;
(4) the invention adopts a plurality of side-looking lenses which are spirally distributed at an angle of 45 degrees, and the first rotating mechanism or the second rotating mechanism is rotated to independently position every 45 degrees, so that the lenses can be aligned to the right front for shooting, five cameras within a short distance are aligned to the same target for shooting, the calculation precision is greatly improved, and the angle of the camera is more convenient to adjust.
Drawings
FIG. 1 is a schematic perspective view of a device for detecting exposure synchronization of a multi-view aerial camera according to the present invention;
FIG. 2 is a schematic cross-sectional view of a device for detecting exposure synchronization of a multi-view aerial camera according to the present invention;
FIG. 3 is a partial enlarged view of FIG. 2;
FIG. 4 is a schematic structural view of a second cross beam of the device for detecting exposure synchronization of a multi-view aerial camera according to the present invention;
FIG. 5 is a schematic view of a mirror portion of the device for detecting exposure synchronization of a multi-view aerial camera according to the present invention;
description of reference numerals:
1. the bearing comprises a first vertical beam, a second vertical beam, a first beam, a second beam, a first bearing, a second vertical beam, a first rotating shaft, a second bearing, a third rotating shaft, a first bearing cover, a second bearing cover, a spacer ring, a pressing nut, a shaft sleeve, a mounting plate, a first bearing cover, a second bearing cover, a spacer ring, a second bearing cover, a spacer ring, a second spring.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the invention, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in FIGS. 1 to 5, a device for detecting exposure synchronization of a multi-view aerial camera comprises,
a support frame;
The rotating mechanisms comprise a first rotating mechanism, a second rotating mechanism and two third rotating mechanisms, the first rotating mechanism, the second rotating mechanism and the third rotating mechanisms are all installed on the supporting frame, the first rotating mechanism is connected with the camera 26 and used for driving the camera 26 to rotate, the second rotating mechanism is used for driving the supporting frame to rotate, the third rotating mechanisms are used for driving the first rotating mechanisms to rotate, the first rotating mechanisms are arranged on the first cross beam 2, the second rotating mechanisms are arranged on the second cross beam 3, the two third rotating mechanisms are respectively arranged on the first vertical beam 1 and the second vertical beam 4, the central axes of the first rotating mechanism and the second rotating mechanisms coincide, and the central axes of the two third rotating mechanisms coincide. The first rotation mechanism is connected to the camera and is used to drive the camera 26 to rotate.
The supporting frame comprises a first cross beam 2, a second cross beam 3 and two vertical beams which are arranged in parallel from top to bottom, the top ends of the two vertical beams are respectively and vertically connected with the two ends of the first cross beam 2, and the bottom ends of the two vertical beams are respectively and vertically connected with the two ends of the second cross beam 3.
The first rotating mechanism has the following specific structure:
further, the first rotating mechanism comprises a first rotating shaft 5, an angular contact ball bearing 24, a bearing sleeve 20, a first spring 22 and a limiting steel ball 21; the camera 26 is removably attached to the end of the bearing sleeve 20.
The angular contact ball bearing 24 is fixedly arranged inside the bearing sleeve 20, and the angular contact ball bearing 24 is sleeved on the outer periphery of the first rotating shaft 5;
the first conical hole of seting up on the first crossbeam 2 and the first blind hole one-to-one of seting up on the bearing sleeve 20 are 8 hole sites along circumference evenly distributed, and are provided with first spacing steel ball 21 in the first conical hole, are provided with first spring 22 in the first blind hole, first spring 22 contacts with first spacing steel ball 21, and the internal diameter of first spring 22 is less than the internal diameter of first spacing steel ball 21. The 8 hole sites can meet the requirement of positioning every 45 degrees when the first rotating mechanism is rotated.
Further, the number of the angular ball bearings 24 is two, and the two angular ball bearings 24 are compressed by the preload nut 23. The first rotation shaft 5 is mounted in the inner bore of the first beam 2 by a threaded connection.
Two angular contact ball bearings 24 are sleeved into the bearing sleeve 20, and in order to eliminate axial clearance, the inner threads are tightly pressed by a pretightening nut 23; a second first spring 22 is placed in a first blind hole of the bearing sleeve 20, and a first limiting steel ball 21 is placed in a conical hole of the first cross beam 2; after the first spring 22 is ensured to prop against the first limiting steel ball 21, the first rotating shaft 6 and the bearing sleeve 20 are tightly pressed by a nut 25;
the second rotating mechanism has the following specific structure:
the second rotating mechanism comprises a second rotating shaft 6, a first bearing 8, a shaft sleeve 14 and a first bearing cover 9, the second rotating shaft 6, the first bearing 10 and the shaft sleeve 14 are arranged from inside to outside along the circumferential direction, the first bearing cover 9 is provided with a clamping surface, and the clamping surface is attached to the end faces of the second rotating shaft 6, the first bearing 8 and the shaft sleeve 14;
as shown in fig. 4, the second blind hole formed in the second beam 3 corresponds to the second conical hole formed in the first bearing cover 9 one by one, and the second blind hole is 8 hole sites uniformly distributed along the circumferential direction, a second limiting steel ball is arranged in the second conical hole, a second spring is arranged in the second blind hole, the second spring contacts with the second limiting steel ball, the inner diameter of the second spring is smaller than that of the second limiting steel ball, and the 8 hole sites can meet the requirement of rotating the first rotating mechanism and position every 45 degrees.
The number of the first bearings 8 is two, and the two first bearings 8 are separated by a spacer ring 12. The second rotating shaft 6 is sleeved into the two first bearings 8 from the small head, the middle of the second rotating shaft is separated by a spacing ring 12, and a compression nut 13 is tightly backed at the end head thread part for eliminating the axial clearance; the whole body is sleeved into the inner cavity of the shaft sleeve 14 and is pressed tightly by the first bearing cover 9;
and a first second limiting steel ball is placed in a conical round hole in the upper surface of the first bearing cover 9, a second spring is placed in a second blind hole of the second cross beam 3, and the second cross beam 3 is integrally connected with the shaft sleeve 14 by using a screw after the second spring is enabled to support against the second limiting steel ball.
The third rotating mechanism has the following specific structure:
third rotary mechanism includes third rotation axis 7, second bearing 10, second bearing lid 11, two perpendicular roof beams all include upper side roof beam and lower side roof beam and movable cover has carries out spacing stopper 18 spacing to the upper side roof beam on the lower side roof beam of at least one perpendicular roof beam, third rotation axis 7 passes upper side roof beam and lower side roof beam and rotates to be connected and third rotation axis 7 and upper side roof beam fixed connection, second bearing 10 is located the lower side roof beam outside and overlaps and establish third rotation axis 7 periphery, second bearing lid 11 has the second and presss from both sides tight face just this that second bearing lid 11 has presss from both sides tight face and the terminal surface laminating setting of second bearing 10 and third rotation axis 7.
The first vertical beam 1 and the second vertical beam 4 of the support frame both comprise an upper side beam and a lower side beam.
The third rotating shaft 7 penetrates through the upper side beam of the first vertical beam 1 or the second vertical beam 4, is connected by a screw and then is sleeved into the lower side beam, a second bearing 10 is sleeved into the matching surface of the outer diameter of the third rotating shaft 7 and the inner diameter of the upper side beam part of the first vertical beam 1 or the second vertical beam 4, and is pressed tightly by a second bearing cover 11; the part is assembled into a left group and a right group, and a limiting block 18 is sleeved in the lower side beam of any one group of the first vertical beam 1 and the second vertical beam 4.
The limiting block 18 is an iron block for limiting the position, and the limiting block 18 is fixed at a relevant position by a screw and used for fixing the relative position of the upper side beam and the lower side beam.
The rotating mechanism is divided into a first rotating mechanism, a second rotating mechanism and a third rotating mechanism. The first rotating mechanism realizes that the camera 26 rotates around the main optical axis and can be positioned and stopped once every 45 degrees; the second rotating mechanism can realize the horizontal rotation of the whole tool (realize the horizontal rotation of the main optical axis of the camera 26) and can be positioned and stopped once every 45 degrees; the third rotating mechanism realizes the rotation of the main optical axis of the camera 26 in the vertical direction and can be positioned and stopped once every 45 degrees.
All rotating mechanisms are kept to rotate stably by the bearings; the rotary positioning and stopping function is that counter bores are arranged on two planes which move relatively up and down (the upper and lower gaps are fixed and small) at intervals of 45 degrees, springs 22 and limiting steel balls 21 are arranged in the counter bores, and after the counter bores on the upper and lower surfaces are overlapped, the limiting steel balls 21 are bounced and stopped.
As shown in fig. 5, the bearing cover further includes a plurality of reflective mirrors 17 and flexible shafts 16, the first bearing cover 9 is provided with an installation plate 15, and the reflective mirrors 17 are fixedly arranged on the installation plate 15 through the flexible shafts 16. By adjusting the angle of the reflector 17, the fields of view of the five cameras are superposed below the central lens, and the fields of view of the five cameras are adjusted to be below the central lens within a short distance under the condition that the whole product is not disassembled. The reflector of the invention is a double-faced reflector, one face is a plane mirror, 1:1 imaging is carried out, the other face has an amplifying effect, a proper reflecting face can be uniformly selected according to actual requirements, and the selectivity of the moving target is increased in the exposure synchronism detection process.
The first vertical beam 1 and the second vertical beam 4 are of two-section structures connected through screws. The two-section structure design is convenient for turning the angle of the camera. The elasticity of the limiting blocks in the limiting blocks 18 can be adjusted to limit the rotation angle, the high point is shot forwards, the optical axis of the central lens is horizontal to the ground, the low point is shot downwards, and the optical axis of the central lens is vertical to the ground.
First rotary mechanism's one end is provided with multi-view aerial photography appearance 26, and detachable connects at first rotary mechanism's bearing sleeve 20's end, multi-view aerial photography appearance 26 includes that a central camera lens and four look sideways at the camera lens, a central camera lens and four look sideways at the camera lens and pass through bluetooth connection cell-phone APP. And connecting the five cameras by using mobile phone APP software, and watching the view field image on the APP.
A method for detecting exposure synchronism of a multi-view aerial camera is realized according to a device for detecting exposure synchronism of the multi-view aerial camera, and comprises the following specific steps:
s1: adjusting the upper side beam and the lower side beam to be positioned on the same straight line, moving the limiting block upwards to abut against the upper side beam and then fastening the limiting block 18, wherein the field of view of the central lens of the camera 26 is vertically downward, and simultaneously adjusting the angles of the four reflective mirrors 17 to ensure that the fields of view of the four side-looking lenses are all positioned under the central lens, and exposing the camera 26;
s2: the four reflective mirrors 17 are taken down, the limiting blocks 18 are unscrewed, the upper side beam is rotated to drive the first cross beam to rotate, when the upper side beam is vertical to the lower side beam, the limiting blocks 18 are fastened after the limiting blocks 18 move upwards to abut against the upper side beam, at the moment, the optical axis of the central lens field of the camera 26 is horizontal, and the central lens shoots;
s3: after the central lens finishes shooting, rotating a second rotating shaft 645 degrees, and automatically positioning the camera 26 to enable the side-looking lens to be aligned to the right front, namely, the main optical axis of the side-looking lens view field is in a horizontal state for shooting; repeating until the second rotating shaft 6 rotates 360 degrees;
s4: the first rotating shaft 545 is rotated, and the camera 26 is autonomously positioned to take a picture; and repeating the steps until the first rotating shaft 5 rotates 360 degrees, and finishing the action that all the main optical axes of the side-looking lens view field are horizontally shot towards the right front.
Rotating the second rotating mechanism only adjusts the shooting process, after S1 is completed, the center lens is aligned with the front, two non-adjacent side-looking cameras are aligned with 45-degree oblique front (one is 90 degrees from left to right), then rotating the center lens of the third rotating mechanism to be aligned with 45-degree oblique front, but one side-looking lens is aligned with the front, after shooting is completed, the step S4 is carried out, rotating the first rotating mechanism to align the second side-looking lens (the side-looking lens adjacent to the first side-looking lens) with the front until 4 cameras complete shooting, 5 cameras in spatial distribution, the side-looking lenses are mutually 45-degree spirally distributed.
Example 1
The working principle of the invention is as follows:
as shown in FIGS. 1-4,
and (3) during exposure synchronism detection:
1. the detection device is erected on a universal tripod and is fixed;
2. the reflector 17 is adjusted to make the four side-looking lens fields align with the stopwatch under the central lens, and the shot object is a quantifiable moving object, so that the shooting sequence and time difference can be detected.
3. Adjusting and fixing the limiting block 18, wherein the central lens of the multi-view aerial camera 26 is vertically downward; and adjusting the angle of the reflector 17 to enable each lens to shoot a view field to be right below the central lens, keeping the angle still and starting exposure.
Example 2
And (3) camera distortion checking and timing:
the working principle of the invention is as follows:
as shown in FIGS. 1-4,
1. the detection device is erected on a universal tripod and is fixed;
2. the reflector 17 can be taken down, and the limiting block 18 is loosened to move downwards;
3. the device is manually rotated by 90 degrees around the third rotating shaft 7, the device is stopped by the limiting block 18, the angle is automatically positioned, the optical axis of the central lens field of view of the multi-view aerial camera 26 is ensured to be close to the horizontal, the central lens is aligned to the checking and correcting to take a picture, and the gravity center of the multi-view aerial camera 26 is designed at the intersection line of the third rotating shaft 7 and the second rotating shaft 6, so that the third rotating shaft 7 does not need to be fastened after the rotation is finished, and the multi-view aerial camera 26 can be stabilized at the position for taking the picture forward;
4. after the central lens is shot, the upper rotating mechanism (with any direction) is manually rotated, the upper rotating mechanism is automatically positioned once every 45 degrees and is shot until 4 side-looking lenses are shot, and then the calibration test is finished, wherein the calibration test is as follows:
rotating the multi-view aerial camera 26 around the second rotating shaft 6, and when the manual torque is larger than the resisting torque of the limiting steel ball 21, the limiting steel ball 21 bears downward extrusion force and completely enters the blind hole of the second cross beam 3 and compresses the spring pressure in the blind hole, so that the multi-view aerial camera 26 starts to rotate; when the steel ball rotates 45 degrees, the limiting steel ball 21 enters the next taper hole, and the function of automatic positioning once every 45 degrees is achieved.
At the moment, the multi-view-angle aerial camera 26 is manually rotated around the first rotating shaft 5, because 8 conical counter bores are uniformly distributed on the lower surface of the first cross beam 2, one conical counter bore is arranged at every 45 degrees, similarly, when the limiting steel ball 21 enters the conical counter bore again, the load rotates by 45 degrees, and at the moment, a main optical axis of a side-looking lens view field approaches to the horizontal direction and is in the positive front;
the camera 26 is manually rotated around the second rotating shaft 6 in turn, so that all the side-looking lens field main optical axes are close to the horizontal direction to photograph right ahead.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (10)
1. The utility model provides a multi-view aerial photography appearance camera exposure synchronism detection device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a support frame;
a camera;
the rotating mechanisms comprise a first rotating mechanism, a second rotating mechanism and a third rotating mechanism, the first rotating mechanism, the second rotating mechanism and the third rotating mechanism are all installed on the supporting frame, the first rotating mechanism is connected with the camera and used for driving the camera to rotate, the second rotating mechanism is used for driving the supporting frame to rotate, and the third rotating mechanism is used for driving the first rotating mechanism to rotate.
2. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 1, wherein: the supporting frame comprises a first cross beam, a second cross beam and two vertical beams which are arranged in parallel from top to bottom, the top ends of the two vertical beams are respectively and vertically connected with the two ends of the first cross beam, and the bottom ends of the two vertical beams are respectively and vertically connected with the two ends of the second cross beam.
3. The apparatus for detecting the exposure synchronism of a multi-view aerial camera according to claim 2, wherein: the first rotating mechanism comprises a first rotating shaft, an angular contact ball bearing, a bearing sleeve, a first spring and a first limiting steel ball, the first rotating shaft is vertically and fixedly connected to the inner side of the first cross beam, and the camera is detachably connected to the tail end of the bearing sleeve;
the angular contact ball bearing is fixedly arranged in the bearing sleeve, and the angular contact ball bearing is sleeved on the periphery of the first rotating shaft;
a plurality of first blind holes are circumferentially formed in the bearing sleeve, a plurality of first conical holes are formed in the inner side of the first cross beam around the first rotating shaft, the first conical holes and the first blind holes are arranged in a one-to-one correspondence mode, first limiting steel balls are arranged in the first conical holes, first springs are arranged in the first blind holes, the first springs are in contact with the first limiting steel balls, and the inner diameter of each first spring is smaller than that of each first limiting steel ball.
4. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 3, characterized in that: the second rotating mechanism comprises a second rotating shaft, a first bearing, a shaft sleeve and a first bearing cover, the second rotating shaft is vertically and fixedly connected to the inner side of a second cross beam of the supporting frame, the second rotating shaft, the first bearing and the shaft sleeve are sequentially arranged from inside to outside, the first bearing cover is provided with a first clamping surface, and the clamping surface of the first bearing cover is attached to the end surfaces of the second rotating shaft, the first bearing and the shaft sleeve;
a plurality of second blind holes are circumferentially formed in the second cross beam, a plurality of second conical holes are formed in the first bearing cover around the second rotating shaft, the second conical holes and the second blind holes are arranged in a one-to-one correspondence mode, second limiting steel balls are arranged in the second conical holes, second springs are arranged in the second blind holes, the second springs are in contact with the second limiting steel balls, and the inner diameter of each second spring is smaller than that of each second limiting steel ball.
5. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 4, wherein: the novel LED lamp is characterized by further comprising four reflectors, wherein the first bearing cover is provided with a mounting plate, and the reflectors are fixedly arranged on the mounting plate through flexible shafts.
6. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 5, wherein: third rotary mechanism includes third rotation axis, second bearing and second bearing lid, two perpendicular roof beams all include entablature roof beam and downside roof beam and mobile cover is gone up to at least one lower curb beam of erecting the roof beam has and carries out spacing stopper to the entablature, and the third rotation axis passes entablature roof beam and downside roof beam and rotates to be connected and third rotation axis and entablature fixed connection, and the second bearing is located the downside roof beam outside and overlaps and establish in third rotation axis periphery, the second bearing lid has the second and presss from both sides tight face just this that the second bearing lid has presss from both sides tight face and the terminal surface laminating setting of second bearing and third rotation axis.
7. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 3, characterized in that: the number of the angular contact ball bearings is two, and the two angular contact ball bearings are tightly pressed through the pre-tightening nuts.
8. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 6, wherein: the number of the second bearings is two, and the two second bearings are separated by a space ring.
9. The device for detecting the exposure synchronism of a multi-view aerial camera according to claim 6, wherein: the camera includes a central lens and four side view lenses.
10. A method for detecting the exposure synchronism detection device of the multi-view aerial camera according to claim 9, comprising the steps of:
s1: adjusting the upper side beam and the lower side beam to be positioned on the same straight line, moving the limiting block upwards to abut against the upper side beam and then fastening the limiting block, wherein the field of view of the central lens of the camera is vertically downward, and simultaneously adjusting the angles of the four reflectors to enable the fields of view of the four side-looking lenses to be positioned right below the central lens, and the camera starts to expose;
s2: the four reflectors are taken down, the limiting block is unscrewed, the upper side beam is rotated to drive the first cross beam to rotate, when the upper side beam is perpendicular to the lower side beam, the limiting block is fastened after the limiting block is moved upwards to abut against the upper side beam, at the moment, the optical axis of the central lens field of the photographic instrument is horizontal, and the central lens shoots;
s3: after the central lens finishes shooting, rotating the second rotating shaft by 45 degrees, and automatically positioning the camera to enable the side-looking lens to be aligned to the right front, namely, the main optical axis of the view field of the side-looking lens is in a horizontal state for shooting; repeating until the second rotating shaft rotates for 360 degrees;
s4: rotating the first rotating shaft by 45 degrees, and automatically positioning the camera for shooting; repeating until the first rotating shaft rotates 360 degrees,
and finishing the action that all the main optical axes of the side-looking lens view field take pictures from the horizontal direction to the right front direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911189518.3A CN110913206B (en) | 2019-11-28 | 2019-11-28 | Device and method for detecting exposure synchronism of camera of multi-view aerial camera |
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| CN201911189518.3A CN110913206B (en) | 2019-11-28 | 2019-11-28 | Device and method for detecting exposure synchronism of camera of multi-view aerial camera |
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| CN102082957A (en) * | 2011-01-05 | 2011-06-01 | 清华大学 | Method and device for checking synchronism of multi-visual-angle acquisition system |
| CN203086616U (en) * | 2012-12-21 | 2013-07-24 | 天津市亚安科技股份有限公司 | Testing device for night vision function of camera |
| CN205280068U (en) * | 2015-12-31 | 2016-06-01 | 东莞市鑫品自动化科技有限公司 | Visual inspection mechanism |
| CN106767736A (en) * | 2017-02-15 | 2017-05-31 | 江苏中天科技股份有限公司 | A kind of device for installing cable character image detection camera and light source |
| CN107153322A (en) * | 2016-03-02 | 2017-09-12 | 塔工程有限公司 | Equipment for detecting camera model |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082957A (en) * | 2011-01-05 | 2011-06-01 | 清华大学 | Method and device for checking synchronism of multi-visual-angle acquisition system |
| CN203086616U (en) * | 2012-12-21 | 2013-07-24 | 天津市亚安科技股份有限公司 | Testing device for night vision function of camera |
| CN205280068U (en) * | 2015-12-31 | 2016-06-01 | 东莞市鑫品自动化科技有限公司 | Visual inspection mechanism |
| CN107153322A (en) * | 2016-03-02 | 2017-09-12 | 塔工程有限公司 | Equipment for detecting camera model |
| CN106767736A (en) * | 2017-02-15 | 2017-05-31 | 江苏中天科技股份有限公司 | A kind of device for installing cable character image detection camera and light source |
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