CN204855400U - Suspension cable PE protective layer damage detection device and control circuit thereof - Google Patents
Suspension cable PE protective layer damage detection device and control circuit thereof Download PDFInfo
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- CN204855400U CN204855400U CN201520565999.4U CN201520565999U CN204855400U CN 204855400 U CN204855400 U CN 204855400U CN 201520565999 U CN201520565999 U CN 201520565999U CN 204855400 U CN204855400 U CN 204855400U
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Abstract
The utility model discloses a suspension cable PE protective layer damage detection device and control circuit thereof, its device be including creep mechanism and image acquisition device, and the motor drive that creeps the mechanism and moves down on the surface along the suspension cable, the rotation along the suspension cable around of rotatory motor drive camera, rotating electrical machines and the motor cooperation of crawling are rotated and are realized the camera and gather the image to the suspension cable surface comprehensively, and microcontroller obtains damage information to image processing, and the ground terminal is given through wireless transmission to damage information, and this detection device still is provided with the acceleration sensor that is used for acquireing positional information and is used for detecting the ultrasonic sensor who whether reachs the suspension cable top, beneficial effect: camera is gathered the image and is handled through microcontroller, improves detection device's real -time, wireless communication module is transmission impairment positional information and control command only, reduces the wireless transmission data volume, and the constructor of being convenient for confirms the accuracy of suspension cable testing result.
Description
Technical field
The utility model relates to a kind of mechanical hook-up can creeped on bridge cable, suspension rod, especially can move up and down on bridge cable surface and carry the device that associated assay devices detects bridge cable surface appearance.
Background technology
Along with Chinese society develops rapidly, Longspan Bridge gets more and more, and cable-stayed bridge, suspension bridge have become the extensive employing bridge type of modern Longspan Bridge.Be chronically exposed in air and use, tygon (PE) protective seam on suspension cable surface easily occurs damage phenomenon in various degree jeopardizing the safety of bridge.Therefore, need regularly to carry out periodic detection and maintenance to bridge stay cable.The bridge cable measuring robots of current domestic research and development, because weight is too heavy, intelligence degree is not high, use the shortcomings such as inconvenient, is not in industry popularized and is used.In order to address this problem, a kind of bridge cable creep detection device disclosed in Chinese patent CN201110285061, by being set on uniform 3 cameras on the Annular machine people on suspension cable, realize comprehensively carrying out image information collecting to suspension cable surface in Robot suspension cable crawling process, the information collected is through being wirelessly transmitted to terminal detecting device, terminal detecting device processes the view data that robotic delivery is come, the place of suspension cable surface distress detected, this structure have lightweight, the features such as simple and easy are installed.But the pick-up unit of this structure needs that all images data of three camera collections are passed to end device to be processed, the real-time not only detected is bad, and need the data volume of transmission huge, the burden of radio communication is heavier, and this device does not have camera stabilization structure, the fuzzy photo of camera because of shake shooting in testing process is not only useless and take wireless transport module.
Utility model content
In view of this, for improving the real-time of pick-up unit and reducing the data volume of wireless communication transmissions, the utility model provides a kind of suspension cable PE protective seam damage detection apparatus, and concrete technical scheme is as follows:
A kind of suspension cable PE protective seam damage detection apparatus, comprise climbing mechanism and image collecting device, described climbing mechanism moves up and down at suspension cable outside surface for driving described image collecting device, described image collecting device is for gathering the damage information of suspension cable PE protective seam and realizing wireless transmission, its key is: described image collecting device comprises one for the mount pad of fixing camera, this mount pad is arranged on a ring-shaped guide rail, described ring-shaped guide rail is connected with described climbing mechanism, and can be socketed on suspension cable, an electric rotating machine is provided with in described mount pad, the output shaft of electric rotating machine is connected with rotating mechanism, under the drive of described electric rotating machine, described mount pad can move in a circle around suspension cable on described ring-shaped guide rail with camera.
Suspension cable PE protective seam damage detection apparatus based on this structure only needs a camera can gather all images on suspension cable surface; decrease to a certain extent and need image data amount to be processed; and in conjunction with the control method of control circuit below and control circuit, can effectively detect PE protective seam damage situations fast.
Further, because camera can produce shake in pick-up unit crawling process, gather under dither state not fogging clear of camera and have ghost image, can strengthen the workload of microcontroller to image procossing like this, and the result of image procossing has comparatively big error; For strengthening the stability of pick-up unit, reduce to shake because of device the trouble brought image procossing, the gathering sill of two ring shapes is respectively arranged with on the upper and lower surface of described ring-shaped guide rail, described mount pad is provided with the reference column adapted with described gathering sill, the sidewall of ring-shaped guide rail is provided with longitudinal rack, described rotating mechanism is a gear mechanism, and engages with the longitudinal rack on described ring-shaped guide rail sidewall; Described climbing mechanism comprises ring holder and three groups of equally distributed crawling wheels, the upper end of described ring holder is connected with described ring-shaped guide rail, described three groups of crawling wheels are connected on described ring holder respectively by elastic link, each group crawling wheel is made up of upper and lower two rollers, wherein one group of crawling wheel is connected with inchworm motor as driving wheel, under the drive of described inchworm motor, described climbing mechanism can move up and down along the outside surface of suspension cable.
Further, described climbing mechanism is also provided with acceleration transducer for obtaining positional information and for detecting the ultrasonic sensor whether arriving suspension cable top.
In addition, the utility model also proposed a kind of control circuit for suspension cable PE protective seam damage detection apparatus, its key is: described climbing mechanism, image collecting device, acceleration transducer and ultrasonic sensor all connect on a microcontroller, camera wherein in image collecting device, acceleration transducer and ultrasonic sensor are connected to the input end of microcontroller, inchworm motor in climbing mechanism and the electric rotating machine in image collecting device are connected to the output terminal of microcontroller, also be connected with wireless communication module on the microcontroller, described wireless communication module is for realizing the radio communication between ground based terminal, described wireless communication module is two-way communication, microcontroller can through wireless communication module terminal transmission data earthward, ground based terminal also can be passed through the SD card on radio communication mold block access microcontroller or pick-up unit, above-mentioned modules is also powered by portable power source.
For above-mentioned detection device and control circuit, its control method can be carried out according to following steps:
S1: system initialization;
S2: microcontroller rotates as step motion control electric rotating machine according to angle θ, and each step shooting photo of camera passes to microcontroller carries out image procossing; When processing result image display PE protective seam is impaired, this photo is saved to SD card by microprocessor, and demarcates suspension cable positional information corresponding to this picture according to acceleration transducer information, then passes to ground based terminal by wireless communication module;
Wherein, the process of image procossing comprises:
S21: use median filtering method to original image denoising;
S22: background subtraction method extracts suspension cable image;
S23: to the suspension cable image binaryzation obtained in step S22;
S24: the profile of black region extracts to the further denoising of binary image, is damage field on PE protective seam;
S25: in process decision chart picture, whether the area of black region exceedes threshold value, if so, is then judged to be that PE protective seam is impaired, otherwise, assert that PE protective seam is intact.
S3: judging whether camera revolves and turn around, is turn to step S4; Otherwise return step S2;
S4: according to the information that ultrasonic sensor detects, microcontroller judges whether climbing mechanism reaches the top of suspension cable, is, controls inchworm motor reversion, reclaims pick-up unit; Otherwise enter step S5;
S5: microprocessor controls inchworm motor rotates forward, makes climbing mechanism move up distance for H, returns step S2 cycle detection.
Beneficial effect: structure is simple, only need a camera can realize the omnidirectional images collection to suspension cable surface through ingenious setting, and the microprocessor that robot carries detects in real time to suspension cable surface distress position, the coordinate information etc. of the suspension cable surface distress detected is sent to ground based terminal, and the data volume of Wireless transceiver die-offs; The SD card that robot carries is for storing the image that there is damaged condition, and constructability personnel confirm the accuracy of suspension cable testing result.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model;
Fig. 2 is image collecting device structural drawing of the present utility model;
Fig. 3 is image collecting device sectional view of the present utility model;
Fig. 4 is crawling structure vertical view of the present utility model;
Fig. 5 is control circuit block diagram of the present utility model;
Fig. 6 is control method process flow diagram of the present utility model;
Fig. 7 is image processing algorithm process flow diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
A kind of suspension cable PE protective seam damage detection apparatus as depicted in figs. 1 and 2, comprise climbing mechanism 1 and image collecting device 2, described climbing mechanism 1 moves up and down at suspension cable outside surface for driving described image collecting device 2, described image collecting device 2 is for gathering the damage information of suspension cable PE protective seam and realizing wireless transmission, its key is: described image collecting device 2 comprises one for the mount pad 2a of fixing camera 2d, this mount pad 2a is arranged on a ring-shaped guide rail 2b, described ring-shaped guide rail 2b is connected with described climbing mechanism 1, and can be socketed on suspension cable, an electric rotating machine 2e is provided with in described mount pad 2a, the output shaft of electric rotating machine 2e is connected with rotating mechanism 2c, under the drive of described electric rotating machine 2e, described mount pad 2a can move in a circle around suspension cable on described ring-shaped guide rail 2b with camera 2d.
Suspension cable PE protective seam damage detection apparatus based on this structure only needs a camera can gather all images on suspension cable surface; decrease to a certain extent and need image data amount to be processed; and in conjunction with the control method of control circuit below and control circuit, can effectively detect PE protective seam damage situations fast.
Further, because camera can produce shake in pick-up unit crawling process, gather under dither state not fogging clear of camera and have ghost image, can strengthen the workload of microcontroller to image procossing like this, and the result of image procossing has comparatively big error, for strengthening the stability of pick-up unit, reduce to shake because of device the trouble brought image procossing, as can be seen from Figure 3, for strengthening the stability of camera 2d in rotary course, the described upper and lower surface of ring-shaped guide rail 2b is respectively arranged with the gathering sill 2b1 of two ring shapes, described mount pad 2a is provided with the reference column 2a1 adapted with described gathering sill 2b1, the sidewall of ring-shaped guide rail 2b is provided with longitudinal rack, described rotating mechanism 2c is a gear mechanism, and engages with the longitudinal rack on described ring-shaped guide rail 2b sidewall, as can be seen from Figure 4, for increasing the stability of pick-up unit on suspension cable in crawling process, the ring holder 1a of described climbing mechanism 1 arranges three groups of equally distributed crawling wheel 1b, the upper end of described ring holder 1a is connected with described ring-shaped guide rail 2b, described three groups or four groups of crawling wheel 1b are connected on described ring holder 1a respectively by elastic link 1c, each group crawling wheel 1b is made up of upper and lower two rollers, wherein one group of crawling wheel 1b is connected with inchworm motor 1e as driving wheel, under the drive of described inchworm motor 1e, described climbing mechanism 1 can move up and down along the outside surface of suspension cable, in order to adapt to the needs of suspension cable, the surface of crawling wheel 1b is set to spill.
Further, described climbing mechanism 1 is also provided with acceleration transducer 3 for obtaining positional information and for detecting the ultrasonic sensor 4 whether arriving suspension cable top.
In addition, the utility model also proposed a kind of control circuit for suspension cable PE protective seam damage detection apparatus, this control circuit block diagram as shown in Figure 5, described climbing mechanism 1, image collecting device 2, acceleration transducer 3 and ultrasonic sensor 4 are all connected on microcontroller 5, camera 2d wherein in image collecting device 2, acceleration transducer 3 and ultrasonic sensor 4 are connected to the input end of microcontroller 5, inchworm motor 1e in the climbing mechanism 1 and electric rotating machine 2e in image collecting device 2 is connected to the output terminal of microcontroller 5, described microcontroller 5 is also connected with wireless communication module 6, described wireless communication module 6 is for realizing the radio communication between ground based terminal 8, described wireless communication module 6 is two-way communication, microcontroller 5 can through wireless communication module 6 earthward terminal 8 send data, ground based terminal 8 also can be passed through wireless communication module 6 and accesses SD card on microcontroller 5 or pick-up unit, above-mentioned modules is also powered by portable power source 7, when specifically implementing, adopts accumulator to be that pick-up unit is powered.
As Figure 6-Figure 7, for above-mentioned detection device and control circuit, the utility model also proposed a kind of control method of suspension cable PE protective seam damage detection apparatus control circuit, and its key is to carry out according to following steps:
S1: system initialization;
S2: microcontroller 5 rotates as step motion control electric rotating machine 2e according to angle θ, and each step shooting photo of camera 2d passes to microcontroller 5 carries out image procossing; When processing result image display PE protective seam is impaired, this photo is saved to SD card by microprocessor 5, and demarcates suspension cable positional information corresponding to this picture according to acceleration transducer 3 information, then passes to ground based terminal 8 by wireless communication module 6; During concrete enforcement, according to the coverage of the distance between camera and suspension cable and camera, here electric rotating machine 2e can be made according to 120 ° of steppings, drive camera 2d around suspension cable every 120 ° of shootings photo, 360 ° of shootings suspension cable surface not being stayed to dead angle can be realized like this, under the prerequisite not affecting pick-up unit Detection results, not only reduce photographed data amount, also reduce the workload of microcontroller image procossing;
Wherein, the process of microcontroller to image procossing comprises:
The first step, uses median filtering method to original image denoising;
Second step, background subtraction method extracts suspension cable image;
3rd step, to the suspension cable image binaryzation obtained in step S22;
4th step, extracts the profile of black region to the further denoising of binary image, is damage field on PE protective seam;
5th step, in process decision chart picture, whether the area of black region exceedes threshold value, if so, is then judged to be that PE protective seam is impaired, otherwise, assert that PE protective seam is intact.
S3: judging whether camera 2d revolves and turn around, is turn to step S4; Otherwise return step S2;
S4: according to the information that ultrasonic sensor 4 detects, microcontroller 5 judges whether climbing mechanism 1 reaches the top of suspension cable, is control inchworm motor 1e and reverse, reclaim pick-up unit; Otherwise enter step S5;
S5: microcontroller 5 controls inchworm motor 1e and rotates forward, make climbing mechanism 1 move up distance for H, return step S2 cycle detection, H is here the height that the camera 2d on pick-up unit takes photo scope on suspension cable.
The utility model operationally, by workmen, pick-up unit is arranged on suspension cable, when camera is taken pictures, inchworm motor does not work, camera passes to microcontroller process after taking one immediately, electric rotating machine drive installation frame rotates 120 °, camera is taken a photo again and is passed to microcontroller process, until after camera revolves and turns around, electric rotating machine does not work, and inchworm motor is climb row distance H, repeats above-mentioned action until pick-up unit climbs to the top of suspension cable, inchworm motor reverses, and reclaims pick-up unit; In this process, thick thin this structure above below suspension cable may be run into, cause camera different at the H of differing heights, at this moment, can through ground based terminal to the relation of microcontroller input suspension cable radius with height, microcontroller controls according to suspension cable radius and the relation of height the height H that inchworm motor creeps at every turn.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a suspension cable PE protective seam damage detection apparatus, comprise climbing mechanism (1) and image collecting device (2), described climbing mechanism (1) moves up and down at suspension cable outside surface for driving described image collecting device (2), described image collecting device (2) is for gathering the damage information of suspension cable PE protective seam and realizing wireless transmission, it is characterized in that: described image collecting device (2) comprises one for the mount pad (2a) of fixing camera (2d), this mount pad (2a) is arranged on a ring-shaped guide rail (2b), described ring-shaped guide rail (2b) is connected with described climbing mechanism (1), and can be socketed on suspension cable, an electric rotating machine (2e) is provided with in described mount pad (2a), the output shaft of electric rotating machine (2e) is connected with rotating mechanism (2c), under the drive of described electric rotating machine (2e), described mount pad (2a) can move in a circle around suspension cable on described ring-shaped guide rail (2b) with camera (2d).
2. suspension cable PE protective seam damage detection apparatus according to claim 1; it is characterized in that: described ring-shaped guide rail (2b) upper and lower surface is respectively arranged with the gathering sill (2b1) of two ring shapes; described mount pad (2a) is provided with the reference column (2a1) adapted with described gathering sill (2b1); the sidewall of ring-shaped guide rail (2b) is provided with longitudinal rack; described rotating mechanism (2c) is a gear mechanism, and engages with the longitudinal rack on described ring-shaped guide rail (2b) sidewall.
3. suspension cable PE protective seam damage detection apparatus according to claim 1 and 2, it is characterized in that: described climbing mechanism (1) comprises ring holder (1a) and three groups of equally distributed crawling wheels (1b), the upper end of described ring holder (1a) is connected with described ring-shaped guide rail (2b), described three groups of crawling wheels (1b) are connected on described ring holder (1a) respectively by elastic link (1c), each group crawling wheel (1b) is made up of upper and lower two rollers, wherein one group of crawling wheel (1b) is connected with inchworm motor (1e) as driving wheel, under the drive of described inchworm motor (1e), described climbing mechanism (1) can move up and down along the outside surface of suspension cable.
4. suspension cable PE protective seam damage detection apparatus according to claim 3, is characterized in that: on described climbing mechanism (1), be also provided with acceleration transducer (3) for obtaining positional information and for detecting the ultrasonic sensor (4) whether arriving suspension cable top.
5. the control circuit of suspension cable PE protective seam damage detection apparatus as claimed in claim 4, it is characterized in that: described climbing mechanism (1), image collecting device (2), acceleration transducer (3) and ultrasonic sensor (4) are all connected on microcontroller (5), camera (2d) wherein in image collecting device (2), acceleration transducer (3) and ultrasonic sensor (4) are connected to the input end of microcontroller (5), inchworm motor (1e) in climbing mechanism (1) and the electric rotating machine (2e) in image collecting device (2) are connected to the output terminal of microcontroller (5), described microcontroller (5) is also connected with wireless communication module (6), described wireless communication module (6) is for realizing the radio communication between ground based terminal (8), above-mentioned modules is also by portable power source (7) power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520565999.4U CN204855400U (en) | 2015-07-30 | 2015-07-30 | Suspension cable PE protective layer damage detection device and control circuit thereof |
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| CN201520565999.4U CN204855400U (en) | 2015-07-30 | 2015-07-30 | Suspension cable PE protective layer damage detection device and control circuit thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105067630A (en) * | 2015-07-30 | 2015-11-18 | 重庆科技学院 | Stay cable PE protection layer damage detection apparatus, control circuit and control method thereof |
| CN107150030A (en) * | 2017-06-01 | 2017-09-12 | 温州大学 | Cold headers finished surface shape on-line intelligence detection means |
| CN107340299A (en) * | 2016-12-24 | 2017-11-10 | 重庆都英科技有限公司 | A kind of image capture instrument of engine commutator vision-based detection |
| CN109540793A (en) * | 2018-10-26 | 2019-03-29 | 陈浩 | A kind of vision inspection apparatus with far field vision image transmitting |
| CN109738446A (en) * | 2018-11-21 | 2019-05-10 | 安徽理工大学 | A kind of non-destructive testing device and its detection method |
| CN110205930A (en) * | 2019-06-13 | 2019-09-06 | 广东承信公路工程检验有限公司 | Novel bridge cable intelligent measurement robot |
| CN111751378A (en) * | 2020-06-15 | 2020-10-09 | 上海电机学院 | Cable insulation layer and pipeline outer layer detection device based on image recognition |
| CN112986397A (en) * | 2021-04-07 | 2021-06-18 | 四川省交通建设集团股份有限公司 | Acoustic wave detection device for compactness of pier stud |
| CN117602177A (en) * | 2024-01-17 | 2024-02-27 | 内蒙古北科交大机器人有限公司 | Magnetic material detection device and packaging system |
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2015
- 2015-07-30 CN CN201520565999.4U patent/CN204855400U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067630A (en) * | 2015-07-30 | 2015-11-18 | 重庆科技学院 | Stay cable PE protection layer damage detection apparatus, control circuit and control method thereof |
| CN105067630B (en) * | 2015-07-30 | 2017-11-17 | 重庆科技学院 | Suspension cable PE protective layers damage detection apparatus and its control circuit, control method |
| CN107340299A (en) * | 2016-12-24 | 2017-11-10 | 重庆都英科技有限公司 | A kind of image capture instrument of engine commutator vision-based detection |
| CN107150030A (en) * | 2017-06-01 | 2017-09-12 | 温州大学 | Cold headers finished surface shape on-line intelligence detection means |
| CN109540793A (en) * | 2018-10-26 | 2019-03-29 | 陈浩 | A kind of vision inspection apparatus with far field vision image transmitting |
| CN109738446A (en) * | 2018-11-21 | 2019-05-10 | 安徽理工大学 | A kind of non-destructive testing device and its detection method |
| CN109738446B (en) * | 2018-11-21 | 2021-02-09 | 安徽理工大学 | Nondestructive testing device and testing method thereof |
| CN110205930A (en) * | 2019-06-13 | 2019-09-06 | 广东承信公路工程检验有限公司 | Novel bridge cable intelligent measurement robot |
| CN111751378A (en) * | 2020-06-15 | 2020-10-09 | 上海电机学院 | Cable insulation layer and pipeline outer layer detection device based on image recognition |
| CN112986397A (en) * | 2021-04-07 | 2021-06-18 | 四川省交通建设集团股份有限公司 | Acoustic wave detection device for compactness of pier stud |
| CN117602177A (en) * | 2024-01-17 | 2024-02-27 | 内蒙古北科交大机器人有限公司 | Magnetic material detection device and packaging system |
| CN117602177B (en) * | 2024-01-17 | 2024-06-07 | 内蒙古北科交大机器人有限公司 | Magnetic material detection device and packaging system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20171117 |