CN114046718B - Swing gate swing angle detection equipment and detection method based on image - Google Patents
Swing gate swing angle detection equipment and detection method based on image Download PDFInfo
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- CN114046718B CN114046718B CN202210039966.0A CN202210039966A CN114046718B CN 114046718 B CN114046718 B CN 114046718B CN 202210039966 A CN202210039966 A CN 202210039966A CN 114046718 B CN114046718 B CN 114046718B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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Abstract
The invention discloses an image-based swing gate swing angle detection device, which comprises a swing gate main body, wherein a card reading area is arranged on one side of the top of the swing gate main body, a fixing hole is formed in the top of one side of the swing gate main body, a fixing sleeve is arranged on the inner wall of the fixing hole, and an angle detector main body is movably penetrated through the center of the fixing sleeve. And the image acquisition technology is utilized for detection, so that the speed is high and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of swing gate angle detection, in particular to image-based swing gate swing angle detection equipment and a detection method.
Background
The swing gate is generally called as a flap gate in the rail transit industry, the shape of a blocking body of the swing gate is a plane with a certain area, the blocking body is perpendicular to the ground, blocking and releasing are realized through rotary swing, the blocking body is made of stainless steel, organic glass and toughened glass, a metal plate is wrapped by special flexible materials, the swing gate is diversified in types and purposes, and the opening and closing angles of the swing gate are different according to the purposes, so that equipment is needed for detecting the angle of the swing gate;
the swing gate angle detection equipment on the market is various and can basically meet the use requirements of people, but certain defects still exist, and the following points are provided for the specific problems:
(1) most of the existing swing gate angle detection equipment is arranged outside the swing gate, so that the volume of the swing gate is increased, the space occupancy rate is increased, and the attractiveness of the swing gate is reduced;
(2) when the existing swing gate angle detection equipment detects the swing gate angle, the detection precision is low, the detection speed is slow, and the detection efficiency is greatly reduced;
(3) pendulum floodgate angle check out test set adopts telescopically in order to guarantee beautifully, and telescopic pendulum floodgate angle check out test set is sealed to think poorly, and inside dust and the rainwater were very easily flowed in the pendulum floodgate, caused the condition of short circuit and equipment damage, shortened the life of equipment greatly.
Disclosure of Invention
The invention aims to provide image-based swing gate swing angle detection equipment and a detection method, and aims to solve the problems of large size, low detection efficiency and poor waterproof and dustproof capabilities in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a pendulum floodgate swing angle check out test set based on image, includes the pendulum floodgate main part, pendulum floodgate main part top one side is installed and is read the card district, and the fixed orifices has been seted up at pendulum floodgate main part one side top, and the fixed orifices inner wall is installed fixed sleeve, and the activity of fixed sleeve center runs through there is the angle detector main part, and the telescopic machanism is installed to angle detector main part bottom, and dustproof machanism is installed to four lateral wall symmetries of angle detector main part, and image processor, characteristic point extractor, data memory ware, contrast ware, matcher and data transmission ware are installed to the inside one side of angle detector main part.
Preferably, the gate is installed in the center of one side of the swing gate main body, and the center of the top of the gate is provided with scale marks.
Preferably, telescopic machanism is including flexible pneumatic cylinder, the fixed plate, the strengthening rib, the dog, slider and slide rail, two sliders are installed to angle detector main part bottom symmetry, and slider bottom sliding connection has the slide rail, slide rail bottom fixedly connected with fixed plate, and fixed plate one side and the inside one side fixed connection of pendulum floodgate main part, fixed plate opposite side and fixed sleeve bottom one side fixed connection, the dog is installed respectively at the slide rail both ends, the strengthening rib is installed at angle detector main part one side center, and the output of the flexible pneumatic cylinder of strengthening rib one side fixedly connected with, upper portion in the inside one side of pendulum floodgate main part is installed to flexible pneumatic cylinder stiff end.
Preferably, the telescopic hydraulic cylinder is electrically connected with a circuit board through a data line, and the circuit board is mounted on the upper portion of one side inside the swing gate main body.
Preferably, the dustproof mechanism comprises a first rubber dustproof plate, a bearing seat, a connecting shaft, a servo motor, a first driving bevel gear, a first driven bevel gear, a synchronous belt, a driving synchronous wheel, a first thread block, a first screw rod, a first fixed block, a second rubber dustproof plate, a guide rod, a limiting block, a second thread block, a second driven bevel gear, a second screw rod, a second driving bevel gear, a driven synchronous wheel and a second fixed block, wherein the top and the bottom of the angle detector main body are respectively and movably penetrated with the second rubber dustproof plate, two side walls of the angle detector main body are respectively and movably penetrated with the first rubber dustproof plate, the top of the center of one side of the second rubber dustproof plate is fixedly connected with the first thread block, the center of the first thread block is movably penetrated with the first screw rod, the first screw rod is connected with the first thread block in a matching way through a ball nut, the bottom of the first screw rod is sleeved with the first fixed block, the first fixing block is rotatably connected with the first screw rod, the first fixing block is symmetrically installed on the top surface and the bottom surface inside the angle detector main body respectively, the top of the first screw rod is fixedly connected with a first driven bevel gear, a first driving bevel gear is meshed with the outer circumference of the first driven bevel gear, the center of the first driving bevel gear penetrates through the output end of a servo motor, and the fixed ends of the servo motor are symmetrically installed on the top and the bottom of the center of one side inside the angle detector main body respectively.
Preferably, a driving synchronizing wheel is fixedly connected to the middle upper part of the first screw rod, a synchronous belt is attached to the center of the outer circumference of the driving synchronizing wheel, a driven synchronizing wheel is attached to the inner circumference of one side of the synchronous belt, a connecting shaft penetrates through the center of the driven synchronizing wheel, a bearing seat is sleeved at the center of the connecting shaft and is rotatably connected with the connecting shaft, the bearing seat is mounted on one side inside the angle detector main body, a second driving bevel gear is fixedly connected to the top end of the connecting shaft, a second driven bevel gear is meshed with the outer circumference of the second driving bevel gear, a second screw rod penetrates through the center of the second driven bevel gear, a second thread block is movably sleeved at the center of the second screw rod, the second thread block is in fit connection with the second screw rod through a ball nut, a first rubber dustproof plate is mounted on one side of the second thread block, and the first rubber dustproof plates symmetrically penetrate through the side walls of the angle detector main body respectively, one end of the second screw rod is rotatably connected with a second fixed block, and the second fixed blocks are respectively and symmetrically arranged on two side walls in the angle detector main body.
Preferably, two limiting blocks are symmetrically arranged on the other sides of the first rubber dust guard and the second rubber dust guard, guide rods penetrate through the centers of the limiting blocks in a movable mode, and the guide rods are arranged on four side walls inside the angle detector main body.
Preferably, a central processing unit is installed on one side of the bottom surface inside the angle detector main body, and a camera is fixedly connected to one side of the bottom of the angle detector main body.
A swing gate swing angle detection method based on images comprises the steps of firstly, equipment assembly; step two, shooting images; step three, angle detection; step four, the equipment is dustproof;
firstly assembling the equipment according to the design, firstly assembling a card reading area and a gate on a swing gate main body, then carving scale marks on the top of the gate, then forming a fixing hole on one side of the swing gate main body, assembling a fixing sleeve, then installing a telescopic mechanism in the swing gate main body, immediately installing a dustproof mechanism in an angle detector main body, installing a camera and a central processor, and then installing the bottom of the angle detector main body on the top of a sliding block in the telescopic mechanism, thereby completing the assembly of the equipment;
in the second step, after the equipment in the first step is assembled, the camera extends out to shoot a gate initial picture, then the picture is transmitted to the data storage device for storage, a user swipes a card in the card reading area to generate an electric signal which is transmitted to the circuit board, then the driving module in the circuit board drives the output end of the telescopic hydraulic cylinder to extend, then the reinforcing rib is driven to move towards the opposite direction of the telescopic hydraulic cylinder, then the angle detector main body is driven to move towards the opposite direction of the telescopic hydraulic cylinder, and then the sliding block is driven to slide along the sliding rail, then the camera is driven to move towards the opposite direction of the telescopic hydraulic cylinder, so that the camera extends out from the interior of the swing gate main body again, the bottom of the camera is opposite to the gate, the gate starts to rotate at the moment, then the camera shoots the picture after the gate rotates, and the rotated image is transmitted to the data storage device for temporary storage;
in the third step, the initial gate picture shot in the second step and the rotated picture are transmitted to an image processor from a data storage for processing, redundancy and noise are removed, then a central processing unit establishes a coordinate system by taking the top center of a gate rotating shaft as a circle center, the clockwise rotation direction is the positive direction of an X axis, the indication direction of a scale mark on the gate is the positive direction of a Y axis, the picture subjected to noise reduction is transmitted to a matcher for superposition matching, then the scale marks on the two pictures are compared by using a comparator, then the tip of the scale mark is extracted by using a feature point extractor to serve as a feature point, and the coordinate of the feature point of the initial picture is
The characteristic point of the rotated picture is
Subsequently substituting the feature points into the formula
To obtain
The rotating angle of the gate is obtained, and then the data transmitter transmits the rotating angle to the background server;
in the fourth step, after the swing angle of the gate in the third step is determined, the output end of the telescopic hydraulic cylinder contracts, the angle detector body is immediately driven to retract into the swing gate body, then the servo motor is opened, the output end of the servo motor starts to rotate, then the first driving bevel gear is driven to rotate, the first driven bevel gear is immediately driven to rotate, then the first screw rod is driven to rotate, then the first thread block is driven to move towards the first fixed block along the first screw rod, the second rubber dust guard is immediately driven to move towards the first fixed block, so that the second rubber dust guard is attached to the inside of the fixed sleeve for sealing and dust prevention, meanwhile, the driving synchronizing wheel is driven to rotate by the rotation of the first screw rod, then the synchronous belt is driven to rotate, then the connecting shaft is driven to rotate, and then the second driving bevel gear is driven to rotate, then, the second driven bevel gear is driven to rotate, so that the second screw rod is driven to rotate, then the second threaded block is driven to move towards the second fixed block, the first rubber dustproof plate is driven to extend out of the side wall of the angle detector body, one side of the first rubber dustproof plate is attached to the inner wall of the fixed sleeve, and therefore the dustproof and waterproof effects of the device are achieved.
Preferably, in the third step, the feature point extractor adopts an image feature extraction algorithm to extract.
Compared with the prior art, the invention has the following beneficial effects:
1. the telescopic mechanism is arranged, so that the angle detector main body is telescopic, the size of the swing gate is favorably reduced, the space occupancy rate of equipment is reduced, and the attractiveness of the swing gate is greatly improved;
2. according to the invention, through the installation of the dustproof mechanism, the first rubber dustproof plate and the second rubber dustproof plate are utilized to realize dustproof and waterproof, so that dust and rainwater are prevented from flowing into a gap between the angle detector main body and the swing gate, and the service life of the device is prolonged;
3. the invention uses the swing angle of the scale mark in the coordinate system to represent the swing angle of the gate, the detection method is simple and reliable, and the detection is carried out by using the image acquisition technology, so that the detection cost is low, the speed is high and the efficiency is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a perspective view of the overall construction of the present invention;
FIG. 2 is a perspective view of the overall structure of the angle detector body of the present invention after it has been extended;
FIG. 3 is an enlarged schematic view of area A of FIG. 2 in accordance with the present invention;
FIG. 4 is an elevational partial cross-sectional view of the overall construction of the invention;
FIG. 5 is an enlarged view of area B of FIG. 4 in accordance with the present invention;
FIG. 6 is an elevational cross-sectional view of the angle detector body of the present invention;
FIG. 7 is an enlarged schematic view of the area C of FIG. 6 in accordance with the present invention;
FIG. 8 is an enlarged schematic view of the area D of FIG. 6 in accordance with the present invention;
FIG. 9 is a side cross-sectional view of the angle detector body of the present invention;
FIG. 10 is an enlarged schematic view of area E of FIG. 9 in accordance with the present invention;
FIG. 11 is a flow chart of a method of the present invention;
in the figure: 1. a swing gate main body; 2. an angle detector main body; 3. a card reading area; 4. a gate; 5. a dust-proof mechanism; 6. a fixing hole; 7. scale lines; 8. a circuit board; 9. a telescoping mechanism; 10. fixing the sleeve; 11. a camera; 12. a central processing unit; 13. an image processor; 14. a feature point extractor; 15. a data storage; 16. a comparator; 17. a matcher; 18. a data transmitter; 901. a telescopic hydraulic cylinder; 902. a fixing plate; 903. reinforcing ribs; 904. a stopper; 905. a slider; 906. a slide rail; 501. a first rubber dust guard; 502. a bearing seat; 503. a connecting shaft; 504. a servo motor; 505. a first drive bevel gear; 506. a first driven bevel gear; 507. a synchronous belt; 508. a driving synchronizing wheel; 509. a first thread block; 510. a first lead screw; 511. a first fixed block; 512. a second rubber dust guard; 513. a guide bar; 514. a limiting block; 515. a second thread block; 516. a second driven bevel gear; 517. a second lead screw; 518. a second drive bevel gear; 519. a driven synchronizing wheel; 520. and a second fixed block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, the present invention provides a technical solution: an image-based swing gate swing angle detection device comprises a swing gate main body 1, a gate 4 is arranged at the center of one side of the swing gate main body 1, a scale mark 7 is arranged at the center of the top of the gate 4, a card reading area 3 is arranged at one side of the top of the swing gate main body 1, a fixing hole 6 is arranged at the top of one side of the swing gate main body 1, a fixing sleeve 10 is arranged on the inner wall of the fixing hole 6, an angle detector main body 2 is movably penetrated through the center of the fixing sleeve 10, a telescopic mechanism 9 is arranged at the bottom of the angle detector main body 2, the telescopic mechanism 9 comprises a telescopic hydraulic cylinder 901, a fixing plate 902, a reinforcing rib 903, a stop 904, a slide block 905 and a slide rail 906, the bottom of the slide rail 906 is fixedly connected with the fixing plate 902, and one side of the fixing plate 902 is fixedly connected with one side inside the swing gate main body 1, the other side of the fixed plate 902 is fixedly connected with one side of the bottom of the fixed sleeve 10, the two ends of the sliding rail 906 are respectively provided with a stop block 904, a reinforcing rib 903 is installed at the center of one side of the angle detector main body 2, an output end of a telescopic hydraulic cylinder 901 is fixedly connected with one side of the reinforcing rib 903, a fixed end of the telescopic hydraulic cylinder 901 is installed at the middle upper part of one side inside the swing gate main body 1, the telescopic hydraulic cylinder 901 is electrically connected with a circuit board 8 through a data line, the circuit board 8 is installed at the upper part of one side inside the swing gate main body 1, the angle detector main body 2 is driven to stretch and retract through a telescopic mechanism 9, the four side walls of the angle detector main body 2 are symmetrically provided with dustproof mechanisms 5, one side inside the angle detector main body 2 is provided with an image processor 13, a characteristic point extractor 14, a data storage 15, a comparator 16, a matcher 17 and a data transmitter 18, each dustproof mechanism 5 comprises a first rubber dustproof plate 501, a second rubber dustproof plate, The angle detector comprises a bearing seat 502, a connecting shaft 503, a servo motor 504, a first driving bevel gear 505, a first driven bevel gear 506, a synchronous belt 507, a driving synchronous wheel 508, a first thread block 509, a first screw rod 510, a first fixed block 511, a second rubber dust-proof plate 512, a guide rod 513, a limit block 514, a second thread block 515, a second driven bevel gear 516, a second screw rod 517, a second driving bevel gear 518, a driven synchronous wheel 519 and a second fixed block 520, wherein the top and the bottom of an angle detector main body 2 are respectively and movably penetrated with the second rubber dust-proof plate 512, two side walls of the angle detector main body 2 are respectively and movably penetrated with the first rubber dust-proof plate 501, the top of the center of one side of the second rubber dust-proof plate 512 is fixedly connected with the first thread block 509, the center of the first thread block 509 is movably penetrated with the first screw rod 510, the first screw rod 510 and the first thread block 509 are matched and connected through a ball nut, the bottom of the first screw rod 510 is sleeved with the first fixed block 511, the first fixing block 511 is rotatably connected with the first lead screw 510, the first fixing block 511 is respectively and symmetrically installed on the top surface and the bottom surface inside the angle detector main body 2, the top of the first lead screw 510 is fixedly connected with a first driven bevel gear 506, the outer circumference of the first driven bevel gear 506 is engaged with a first driving bevel gear 505, the center of the first driving bevel gear 505 is penetrated through the output end of the servo motor 504, the fixed end of the servo motor 504 is respectively and symmetrically installed on the top and the bottom of the center of one side inside the angle detector main body 2, the middle upper part of the first lead screw 510 is fixedly connected with a driving synchronizing wheel 508, the center of the outer circumference of the driving synchronizing wheel 508 is adhered with a synchronous belt 507, the inner circumference of one side of the synchronous belt 507 is adhered with a driven synchronizing wheel 519, the center of the driven synchronizing wheel 519 is penetrated with a connecting shaft 503, the center of the connecting shaft 503 is sleeved with a bearing block 502, the bearing block 502 is rotatably connected with the connecting shaft 503, the bearing block 502 is installed on one side inside the angle detector main body 2, a second driving bevel gear 518 is fixedly connected to the top end of the connecting shaft 503, a second driven bevel gear 516 is engaged with the outer circumference of the second driving bevel gear 518, a second screw 517 is fixedly penetrated through the center of the second driven bevel gear 516, a second screw block 515 is movably sleeved at the center of the second screw 517, the second screw block 515 is in fit connection with the second screw 517 through a ball nut, a first rubber dust guard 501 is installed at one side of the second screw block 515, the first rubber dust guard 501 symmetrically penetrates through the side walls of the two sides of the angle detector main body 2 respectively, a second fixed block 520 is rotatably connected to one end of the second screw 517, the second fixed block 520 is symmetrically installed at the two side walls of the angle detector main body 2 respectively, two limiting blocks 514 are symmetrically installed at the other side of the first rubber dust guard 501 and the second rubber dust guard 512, a guide rod 513 is movably penetrated through the center of the limiting blocks 514, and the guide rods 513 are installed at the four side walls of the angle detector main body 2, be favorable to dustproof, central processing unit 12 is installed to inside bottom surface one side of angle detector main part 2, and 2 bottom one side fixedly connected with cameras 11 of angle detector main part are favorable to shooting the picture through camera 11.
Referring to fig. 11, the present invention provides a technical solution: a swing gate swing angle detection method based on images comprises the steps of firstly, equipment assembly; step two, shooting images; step three, angle detection; step four, the equipment is dustproof;
firstly, assembling the equipment according to the design, namely assembling a card reading area 3 and a gate 4 on a swing gate main body 1, then carving scale marks 7 on the top of the gate 4, then forming a fixing hole 6 on one side of the swing gate main body 1, installing a fixing sleeve 10, then installing a telescopic mechanism 9 in the swing gate main body 1, immediately installing a dustproof mechanism 5 in an angle detector main body 2, installing a camera 11 and a central processor 12, and then installing the bottom of the angle detector main body 2 on the top of a sliding block 905 in the telescopic mechanism 9, thereby completing the assembly of the equipment;
in the second step, after the equipment in the first step is assembled, the camera 11 extends out to shoot an initial picture of the gate 4, then the image is transmitted to the data storage 15 for storage, and as a user swipes a card in the card reading area 3, an electric signal is generated and transmitted to the circuit board 8, then the driving module in the circuit board 8 drives the output end of the telescopic hydraulic cylinder 901 to extend, then the reinforcing rib 903 is driven to move towards the opposite direction of the telescopic hydraulic cylinder 901, then the angle detector main body 2 is driven to move towards the opposite direction of the telescopic hydraulic cylinder 901, and then the sliding block 905 is driven to slide along the sliding rail 906, then the camera 11 is driven to move towards the opposite direction of the telescopic hydraulic cylinder 901, so that the camera 11 extends out of the swing gate main body 1, the bottom of the camera 11 is opposite to the gate 4, at this time, the gate 4 starts to rotate, then the camera 11 shoots the image after the gate 4 rotates and transmits the image to a data storage (15) for temporary storage;
in the third step, the initial picture of the gate 4 shot in the second step and the rotated picture are transmitted to the image processor 13 from the data storage 15 to be processed, redundancy and noise are removed, then the central processor 12 establishes a coordinate system by taking the top center of the rotating shaft of the gate 4 as the center of a circle, the clockwise rotation direction is the positive direction of an X axis, the indication direction of a scale mark 7 on the gate 4 is the positive direction of a Y axis, then the picture after noise reduction is transmitted to the matcher 17 to be overlapped and matched, then the scale marks 7 on the two pictures are compared by using the comparator 16, then the tip of the scale mark 7 is extracted by using the feature extractor 14 as a feature point, the feature point extractor 14 adopts an image feature extraction algorithm to extract, and the coordinates of the feature point of the initial picture are that
The characteristic point of the rotated picture is
Subsequently substituting the feature points into the formula
To obtain
Then the angle of the gate 4 is obtained, and then the data transmitter 18 transmits the angle to the background server;
in the fourth step, after the swing angle of the gate 4 in the third step is determined, the output end of the telescopic hydraulic cylinder 901 is contracted to drive the angle detector main body 2 to retract into the swing gate main body 1, then the servo motor 504 is opened, the output end of the servo motor 504 starts to rotate, then the first driving bevel gear 505 is driven to rotate, then the first driven bevel gear 506 is driven to rotate, then the first lead screw 510 is driven to rotate, then the first thread block 509 is driven to move towards the first fixed block 511 along the first lead screw 510, then the second rubber dust-proof plate 512 is driven to move towards the first fixed block 511, so that the second rubber dust-proof plate 512 is attached to the inside of the fixed sleeve 10 for sealing and dust prevention, meanwhile, the driving synchronous wheel 508 is driven to rotate by the rotation of the first lead screw 510, then the synchronous belt 507 is driven to rotate, then the driven synchronous wheel 519 is driven to rotate, and then the connecting shaft 503 is driven to rotate, then, the second driving bevel gear 518 is driven to rotate, and then the second driven bevel gear 516 is driven to rotate, so that the second screw rod 517 is driven to rotate, then the second thread block 515 is driven to move towards the second fixing block 520, so that the first rubber dust-proof plate 501 is driven to extend out from the side wall of the angle detector main body 2, and then one side of the first rubber dust-proof plate 501 is attached to the inner wall of the fixing sleeve 10, so that the dust prevention and the water prevention of the device are completed.
Based on the above, the present invention has the advantages that the extension and retraction of the angle detector main body 2 are realized by the installation of the extension and retraction mechanism 9 and the extension and retraction of the output end of the extension and retraction hydraulic cylinder 901 in the extension and retraction mechanism 9, which is beneficial to reducing the volume of the swing gate main body 1, reducing the space occupancy rate of the equipment, and the aesthetic measure of the swing gate main body 1 is greatly improved, through the installation of the dustproof mechanism 5, the first rubber dustproof plate 501 and the second rubber dustproof plate 512 are used for realizing dustproof and waterproof, the phenomenon that dust and rainwater flow in from a gap between the angle detector main body 2 and the swing gate main body 1 is avoided, the service life of equipment is prolonged, the swing angle of the gate 4 is represented by the swing angle of the scale mark 7 in a coordinate system, the detection method is simple and reliable, the image acquisition technology is used for detection, the detection degree is low, the speed is high, and the efficiency is high.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a pendulum floodgate swing angle check out test set based on image, includes pendulum floodgate main part (1), its characterized in that: a card reading area (3) is arranged on one side of the top of the swing gate main body (1), a fixing hole (6) is formed in the top of one side of the swing gate main body (1), a fixing sleeve (10) is arranged on the inner wall of the fixing hole (6), an angle detector main body (2) is movably penetrated through the center of the fixing sleeve (10), and the bottom of the angle detector main body (2) is provided with a telescopic mechanism (9), four side walls of the angle detector main body (2) are symmetrically provided with dustproof mechanisms (5), one side of the inside of the angle detector main body (2) is provided with an image processor (13), a characteristic point extractor (14), a data memory (15), a comparator (16), a matcher (17) and a data transmitter (18), one side of the bottom surface of the inside of the angle detector main body (2) is provided with a central processor (12), and one side of the bottom of the angle detector main body (2) is fixedly connected with a camera (11);
the camera extends out to shoot a gate initial picture, and then the image is transmitted to the data storage device to be stored; the camera shoots the picture after the gate rotates, and the rotated image is transmitted to the data storage device for temporary storage; the data storage is transmitted to the image processor for processing; the central processing unit uses the top center of the gate rotating shaft as the center of a circle to establish a coordinate system, the clockwise rotation direction is the positive direction of an X axis, the indication direction of the scale marks on the gate is the positive direction of a Y axis, the noise-reduced pictures are transmitted to the matcher to be coincided and matched, then the scale marks on the two pictures are compared by using the comparator, and then the tips of the scale marks are extracted by using the feature point extractor to serve as feature points.
2. The image-based swing gate swing angle detection apparatus according to claim 1, wherein: a gate (4) is installed in the center of one side of the swing gate main body (1), and scale marks (7) are arranged in the center of the top of the gate (4).
3. The image-based swing gate swing angle detection apparatus according to claim 1, wherein: the telescopic mechanism (9) comprises a telescopic hydraulic cylinder (901), a fixing plate (902), a reinforcing rib (903), a stop block (904), two sliding blocks (905) and a sliding rail (906), the two sliding blocks (905) are symmetrically arranged at the bottom of the angle detector main body (2), the bottom of the sliding block (905) is connected with a sliding rail (906) in a sliding way, the bottom of the sliding rail (906) is fixedly connected with a fixing plate (902), one side of the fixed plate (902) is fixedly connected with one side inside the swing gate main body (1), the other side of the fixed plate (902) is fixedly connected with one side of the bottom of the fixed sleeve (10), two ends of the sliding rail (906) are respectively provided with a stop block (904), the center of one side of the angle detector main body (2) is provided with a reinforcing rib (903), and one side of the reinforcing rib (903) is fixedly connected with the output end of a telescopic hydraulic cylinder (901), and the fixed end of the telescopic hydraulic cylinder (901) is arranged at the middle upper part of one side in the swing gate main body (1).
4. The image-based swing gate swing angle detection apparatus according to claim 3, wherein: the telescopic hydraulic cylinder (901) is electrically connected with a circuit board (8) through a data line, and the circuit board (8) is installed on the upper portion of one side inside the swing gate main body (1).
5. The image-based swing gate swing angle detection apparatus according to claim 1, wherein: the dustproof mechanism (5) comprises a first rubber dustproof plate (501), a bearing seat (502), a connecting shaft (503), a servo motor (504), a first driving bevel gear (505), a first driven bevel gear (506), a synchronous belt (507), a driving synchronous wheel (508), a first thread block (509), a first screw rod (510), a first fixed block (511), a second rubber dustproof plate (512), a guide rod (513), a limiting block (514), a second thread block (515), a second driven bevel gear (516), a second screw rod (517), a second driving bevel gear (518), a driven synchronous wheel (519) and a second fixed block (520), wherein the number of the second rubber dustproof plate (512) is two, the two rubber dustproof plates respectively movably penetrate through the top and the bottom of the angle detector main body (2), the number of the first rubber dustproof plate (501) is two, and the two rubber dustproof plates respectively movably penetrate through the two side walls of the angle detector main body (2), a first threaded block (509) is fixedly connected to the top of the center of one side of a second rubber dust-proof plate (512), a first lead screw (510) penetrates through the center of the first threaded block (509) in a movable manner, the first lead screw (510) is connected with the first threaded block (509) in a matched manner through a ball nut, a first fixed block (511) is sleeved at the bottom of the first lead screw (510), the first fixed block (511) is rotatably connected with the first lead screw (510), two first fixed blocks (511) are arranged and symmetrically installed on the top surface and the bottom surface inside an angle detector main body (2) respectively, a first driven bevel gear (506) is fixedly connected to the top of the first lead screw (510), a first driving bevel gear (505) is meshed on the outer circumference of the first driven bevel gear (506), an output end of a servo motor (504) penetrates through the center of the first driving bevel gear (505), two servo motors (504) are arranged, and fixed ends of the two servo motors (504) are symmetrically installed on one inside the angle detector main body (2) respectively Side center top and bottom;
a driving synchronizing wheel (508) is fixedly connected to the middle upper portion of the first lead screw (510), a synchronous belt (507) is attached to the center of the outer circumference of the driving synchronizing wheel (508), a driven synchronizing wheel (519) is attached to the inner circumference of one side of the synchronous belt (507), a connecting shaft (503) penetrates through the center of the driven synchronizing wheel (519), a bearing seat (502) is sleeved at the center of the connecting shaft (503), the bearing seat (502) is rotatably connected with the connecting shaft (503), the bearing seat (502) is installed on one side inside the angle detector main body (2), a second driving bevel gear (518) is fixedly connected to the top end of the connecting shaft (503), a second driven bevel gear (516) is meshed with the outer circumference of the second driving bevel gear (518), a second lead screw (517) is fixedly penetrated through the center of the second driven bevel gear (516), a second thread block (515) is movably sleeved at the center of the second lead screw (517), and the second thread block (515) is connected with the second lead screw (517) in a matched manner through a ball nut, first rubber dust-proof plates (501) are mounted on one side of the second thread block (515), the two first rubber dust-proof plates (501) symmetrically penetrate through the side walls of the two sides of the angle detector main body (2) respectively, one end of a second screw rod (517) is rotatably connected with a second fixed block (520), and the two second fixed blocks (520) are symmetrically mounted on the two side walls in the angle detector main body (2) respectively;
two stopper (514) are installed to first rubber dust guard (501) and the equal symmetry of second rubber dust guard (512) opposite side, and stopper (514) center activity runs through has guide bar (513), and four inside lateral walls in angle detector main part (2) are installed in guide bar (513).
6. A swing gate swing angle detection method based on images comprises the steps of firstly, equipment assembly; step two, shooting images; step three, angle detection; step four, the equipment is dustproof; the method is characterized in that:
firstly, assembling the equipment according to a design, namely assembling a card reading area (3) and a gate (4) on a swing gate main body (1), then, carving scale marks (7) on the top of the gate (4), then, forming a fixing hole (6) on one side of the swing gate main body (1), assembling a fixing sleeve (10), then, installing a telescopic mechanism (9) in the swing gate main body (1), immediately installing a dustproof mechanism (5) in an angle detector main body (2), installing a camera (11) and a central processor (12), and then, installing the bottom of the angle detector main body (2) on the top of a sliding block (905) in the telescopic mechanism (9), thereby completing the assembly of the equipment;
in the second step, after the equipment in the first step is assembled, firstly, the camera (11) extends out to shoot an initial picture of the gate (4), then, the image is transmitted to the data storage device (15) for storage, an electric signal is generated and transmitted to the circuit board (8) along with the card swiping of a user in the card reading area (3), then, the driving module in the circuit board (8) drives the output end of the telescopic hydraulic cylinder (901) to extend, then, the reinforcing rib (903) is driven to move towards the opposite direction of the telescopic hydraulic cylinder (901), the angle detector main body (2) is driven to move towards the opposite direction of the telescopic hydraulic cylinder (901), then, the sliding block (905) is driven to slide along the sliding rail (906), then, the camera (11) is driven to move towards the opposite direction of the telescopic hydraulic cylinder (901), so that the camera (11) extends out from the interior of the swing gate main body (1) again, and the bottom of the camera (11) is opposite to the gate (4), at the moment, the gate (4) starts to rotate, then the camera (11) shoots a picture after the gate (4) rotates, and the rotated image is transmitted to the data storage (15) for temporary storage;
in the third step, the initial picture of the gate (4) shot in the second step and the rotated picture are transmitted to an image processor (13) from a data storage device (15) to be processed, redundancy and noise are removed, then a central processing unit (12) establishes a coordinate system by taking the top center of a rotating shaft of the gate (4) as a circle center, the clockwise rotating direction is the positive direction of an X axis, the indicating direction of a scale mark (7) on the gate (4) is the positive direction of a Y axis, then the picture after noise reduction is transmitted to a matcher (17) to be overlapped and matched, then the scale marks (7) on the two pictures are compared by a comparator (16), then the tip of the scale mark (7) is extracted by a feature point extractor (14) to serve as a feature point, and the coordinate of the characteristic point of the initial picture is the feature point of the initial picture
The characteristic point of the rotated picture is
Subsequently substituting the feature points into the formula
To obtain
Then the rotating angle of the gate (4) is obtained, and then the data transmitter (18) transmits the data to the background server;
in the fourth step, after the swing angle of the gate (4) in the third step is determined, the output end of the telescopic hydraulic cylinder (901) is contracted to drive the angle detector main body (2) to retract into the swing gate main body (1), then the servo motor (504) is turned on, the output end of the servo motor (504) starts to rotate, then the first driving bevel gear (505) is driven to rotate, then the first driven bevel gear (506) is driven to rotate, then the first screw rod (510) is driven to rotate, then the first thread block (509) is driven to move towards the first fixed block (511) along the first screw rod (510), then the second rubber dust-proof plate (512) is driven to move towards the first fixed block (511), so that the second rubber dust-proof plate (512) is attached to the inside of the fixed sleeve (10) for sealing and dust prevention, and meanwhile the driving synchronizing wheel (508) is driven to rotate by the rotation of the first screw rod (510), then, a synchronous belt (507) is driven to rotate, then a driven synchronous wheel (519) is driven to rotate, a connecting shaft (503) is driven to rotate immediately, then a second driving bevel gear (518) is driven to rotate, then a second driven bevel gear (516) is driven to rotate, so that a second screw rod (517) is driven to rotate, then a second thread block (515) is driven to move towards a second fixing block (520), a first rubber dustproof plate (501) is driven to extend out of the side wall of the angle detector main body (2), and one side of the first rubber dustproof plate (501) is attached to the inner wall of a fixing sleeve (10) immediately, so that the dustproof and waterproof of the device is completed.
7. The image-based swing gate swing angle detection method according to claim 6, characterized in that: in the third step, the feature point extractor (14) adopts an image feature extraction algorithm for extraction.
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