CN203385680U - Inner wall surface defect image acquiring device - Google Patents

Inner wall surface defect image acquiring device Download PDF

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Publication number
CN203385680U
CN203385680U CN201320384117.5U CN201320384117U CN203385680U CN 203385680 U CN203385680 U CN 203385680U CN 201320384117 U CN201320384117 U CN 201320384117U CN 203385680 U CN203385680 U CN 203385680U
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CN
China
Prior art keywords
cylinder
air pump
control
stage cylinder
industrial
Prior art date
Application number
CN201320384117.5U
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Chinese (zh)
Inventor
范晋伟
谭福涛
梁晓霞
郑德荣
王志远
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北京工业大学
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Priority to CN201320384117.5U priority Critical patent/CN203385680U/en
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Publication of CN203385680U publication Critical patent/CN203385680U/en

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Abstract

The utility model relates to an inner wall surface defect image acquiring device applied to nondestructive test on defects such as surface crack on the inner wall of a straight pipe. According to the inner wall surface defect image acquiring device, a serve motor is used for driving an industrial camera to carry out optical image acquisition on the surface of the inner wall, a positioning mechanism is composed of two locking cylinders which are symmetrically arranged and parallel to each other and a ternary cylinder arranged on a ternary cylinder bracket, and the positioning mechanism can be used for freely adjusting the height and telescopic length of an optical probe. A locking cylinder adopted by a lifting mechanism can be locked and stopped at any position in a lifting process and the locking cylinder is arranged and fixed on mobile car body; a mute air pump is taken as an air source and is placed in an air pump cabinet of the mobile car body; the ternary cylinder bracket is also provided with a digital laser range finder which is used for detecting an extension stroke of the ternary cylinder and feeding the stroke back to a digital control device, and thus calibration of an image acquisition position is realized; an industrial personal computer is inserted into a programmable motion control card by virtue of a PCI (peripheral component interconnect) bus expansion slot to control a serve system and a switching value and is arranged on the platform of the air pump cabinet together with a display and a control box.

Description

A kind of inner wall surface defect image harvester

Technical field

The utility model relates to a kind of inner wall surface defect image harvester, more specifically is applied to the Non-Destructive Testing of inner surface cracks, belongs to Machine Design, electromechanical integration field.

Background technology

Inside peeping detection is a kind of important Dynamic Non-Destruction Measurement, can be used for high temperature, poisonous, the inspection in the place that nuclear radiation and human eye can't observe directly and observation, can be in the situation that do not need dismounting or destroy assembling and equipment is out of service realizes Non-Destructive Testing, be widely used at present automobile, aeromotor, propellant charge, in the detection of the equipment such as pipeline and maintenance, with respect to other Dynamic Non-Destruction Measurements, inside peep to detect and have intuitively, efficiently, the characteristics such as easy operating, can monitor in real time position and the character of inherent vice, record, store and image analysis.

Increasingly mature along with digital image processing techniques, inside peep detection technique and obtained effect preferably in the detection of inner wall surface crackle, identification and measurement.In recent years, domestic and international many scholars have also internally peeped detection system and have carried out extensive and deep research.As: the underground pipeline surface crack testing system of Paul W.Fieguth design; Peep fault diagnosis system etc. in the Aeroengine Smart of people's designs such as the official praises; The surface crack testing system based on computer picture recognition of the people such as Zhang Xiaochun design etc.

But the application automaticity of peeping detection at present many is very low, in the process that target area is detected, the manual operation that very major part will rely on the people extend into assigned address by the interior head of spying upon; Secondly, for long straight inwall, detect, the effect of a lot of interior endoscope devices only is confined to stretch into measured object inside and simply observes, and can not effectively to the target inwall, carry out accurate positioning image collection, and visual observation also easily makes the testing staff feel tired for a long time; Finally, when gathering long straight tube inwall image, the length of rigid pipe endoscope generally can not meet the demands.

The utility model provides a kind of inner wall surface defect image acquisition system, the inner wall defect optical non-destructive detection equipment of develop specially a kind of easy to use, durable, dependable performance, in order to substitute current China by the artificial naked-eye observation of external light source or manually to use endoscope to observe the backward means of inner wall surface defect, this equipment can carry out high-precision auto Image Collection to the straight tube inner wall surface, for follow-up defect image is processed and extraction and the measurement of crack create conditions.

The utility model content

Low and can not meet the straight tube inwall of adjusting the distance longer and carry out the shortcomings such as image acquisition in order to overcome interior endoscope detection apparatus automaticity, the utility model provides a kind of inner wall surface defect image harvester, and height, collapsing length and the anglec of rotation that optic probe-industrial camera could be controlled and adjust to this equipment automatically complete observation or the auto Image Collection to long straight inner wall surface defect.

A kind of inner wall surface defect image harvester, it is characterized in that, this inwall image collecting device is comprised of industrial camera, servomotor, three-stage cylinder, locking cylinder, cylinder bracket, quiet air pump, industrial computer, control enclosure and moving body, wherein, industrial camera is arranged on the camera fixed mount, the camera fixed mount utilizes flat key to be connected with minor axis, and minor axis is connected with servomotor by shaft coupling again; Servomotor is fixed on the servomotor erecting frame, and is threaded connection the front end at the three-stage cylinder cylinder rod; Three-stage cylinder is arranged on the three-stage cylinder carriage, and the elevating mechanism of three-stage cylinder carriage is comprised of the locking cylinder of two symmetrical parallel configurations; The cylinder rod of locking cylinder connects auxiliary by cylinder and is connected to three-stage cylinder carriage bottom, and the locking cylinder afterbody is fixed on moving body; Locking cylinder is by quiet air pump as source of the gas, and quiet air pump is placed in the air pump cabinet of moving body; Optical ranging pick-up unit-laser range finder also is installed on the three-stage cylinder carriage; Be configured in air pump cashier's office in a shop as the industrial computer of control section and programmable movements control card and servo-driver, control enclosure.

Insert the programmable movements control card on the pci bus expansion slot of industrial control computer mainboard, the CPU of the CPU of industrial computer and programmable movements control card forms master-slave mode dual micro processor structure, between industrial computer and programmable movements control card, by pci bus, realizes real-time Communication for Power.

The utility model is mainly solved by following technical proposals for above-mentioned technical matters: this inner wall surface defect image harvester has adopted industrial computer, the programmable movements control card, servo-driver, AC servo motor and scrambler, locking cylinder, three-stage cylinder, quiet air pump, laser range finder and industrial camera etc. form hardware platform.Wherein, three-stage cylinder is contained on the three-stage cylinder carriage, the three-stage cylinder carriage as elevating mechanism, can and can locking be lived optional position by the locking cylinder of two synchronization liftings, symmetrical parallel configuration with the height of automatic or manual mode adjustment worktable in lifting process.The cylinder rod of these two locking cylinders utilizes cylinder connection auxiliary to be connected with three-stage cylinder carriage bottom, and afterbody is fixed on moving body.Industrial camera is installed on the camera fixed mount, and the camera fixed mount is connected with servomotor by minor axis and shaft coupling.Servomotor is fixed on the servomotor erecting frame, and the servomotor erecting frame is threaded connection again the cylinder rod front end that is arranged on three-stage cylinder.Under the driving of servomotor, industrial camera can carry out 360 degree rotations, and can carry out realtime graphic or video acquisition under the control of industrial computer.Three-stage cylinder and locking cylinder are by quiet air pump as source of the gas, and quiet air pump is placed in the air pump cabinet of moving body rear end, except as source of the gas, have also played certain counterweight effect.In addition, digital laser range finder also is installed on the three-stage cylinder carriage, for detection of three-stage cylinder, stretches out stroke, and travel feedback is arrived to numerical control device, can be used for the demarcation of image capture position.As the industrial computer of control section with insert its inner programmable movements control card, and display, control enclosure are configured on air pump platform cashier's office in a shop.Whole device is configured on moving body, and the bottom of moving body is equipped with universal wheel and feet, and can realize moving freely, and rise feet when image acquisition, but the horizontality of safeguard work platform and stability.

The utility model compared with prior art, there is following obvious advantage and beneficial effect: the utlity model has the characteristics such as simple in structure, dependable performance, automaticity are high, easy operation, height and the collapsing length that can automatically adjust optic probe complete the image acquisition of long straight inner wall surface or observe routinely, particularly for rigid endoscope, can not meet the longer straight tube inwall of length requirement, this device also can be observed and image acquisition it effectively.In addition, this device adopts industrial computer and programmable movements control card as control system, with servo-drive system, forms the semiclosed loop structure, and positioning precision is high, can realize the accurate location of inwall image.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1 is the structure diagram of the utility model inner wall surface defect image harvester.

Fig. 2 is the three-dimensional assembling schematic diagram of inner wall surface defect image harvester.

Fig. 3 is optical module enlarged drawing in Fig. 2.

1. industrial cameras in figure, 2. three-stage cylinder, 3. laser range finder, 4. control enclosure, 5. industrial computer, 6. servomotor, 7. three-stage cylinder carriage, 8. cylinder connects auxiliary, 9. locking cylinder, 10. feet, 11. moving bodies, 12. quiet air pumps, 13. minor axis, 14. shaft coupling, 15. servomotor erecting frames, 16. camera fixed mounts.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1:

The present embodiment adopts the control mode of industrial computer 5+ programmable movements control card, inserts MINI-PMAC type programmable movements control card on the pci bus expansion slot of industrial control computer mainboard.The CPU of the CPU of industrial computer 5 and programmable movements control card forms master-slave mode dual micro processor structure, between industrial computer 5 and programmable movements control card, by pci bus, realizes real-time Communication for Power.The management of higher level's industrial computer 5 main completion systems, subordinate's programmable movements control card mainly completes servocontrol and real time tasks is processed, send instruction to servo-driver according to the requirement of host computer, and then drive servomotor 6 to realize the motion control of feed shaft, pick-up unit-scrambler constantly detects the physical location of servomotor 6 simultaneously, and in real time detection signal is fed back to the programmable movements control card, form semi-closed loop servo system, thereby make the accurate positioning acquisition image of optical module.The built-in PLC of programmable movements control card connects control enclosure 4 and strong power part through the I/O interface board, realizes switching value I/O logic control, comprising controlling the stretching of three-stage cylinder 2 and locking cylinder 9, contracting and optional position, stops.Wherein, as the industrial computer 5 of control section with insert its inner programmable movements control card and display, control enclosure 4 etc. are configured on air pump platform cashier's office in a shop.

Industrial camera 1 is arranged on camera fixed mount 16, be connected with shaft coupling 14 and realize rotariling actuate by minor axis 13 by a servomotor 6, the industrial camera probe can be made 360 degree Space Rotatings under driven by servomotor around the axis of inwall, realize real time image collection.Drive the servomotor 6 of industrial camera rotation to be arranged on the front end of three-stage cylinder 2 cylinder rods by servomotor erecting frame 15.Three-stage cylinder is arranged on three-stage cylinder carriage 7, the elevating mechanism of three-stage cylinder carriage is comprised of the locking cylinder 9 of two synchronization liftings, symmetrical parallel configuration, can adjust the height of three-stage cylinder workbench by control enclosure 4 buttons, and can stablize locking in lifting process and live optional position.The cylinder rod end of locking cylinder 9 connects auxiliary 8 by cylinder and is connected to three-stage cylinder carriage 7 bottoms, and afterbody is arranged on moving body 11.Above-mentioned cylinder as source of the gas, adopts bidirectional speed adjusting and position control loop to control flexible by quiet air pump 12.Quiet air pump is placed in the air pump cabinet of moving body 11 rear ends, except as source of the gas, has also played certain counterweight effect.On the three-stage cylinder carriage, 7 also are equipped with optical ranging pick-up unit-laser range finder 3, for detection of three-stage cylinder, stretch out stroke, and travel feedback is arrived to numerical control device, realize the demarcation of image capture position.

Whole image collecting device is arranged on moving body 11, and the bottom of moving body is equipped with universal wheel and feet 10, and trailing wheel is with locking device.The artificial moving body 11 that promotes is behind suitable position, and spiral rises the feet 10 of four jiaos of moving body bottoms to keep the workbench horizontal stable.Press lifting button on control enclosure 4 or at industrial computer 5 master control interface setting parameter target adjustable heights, three-stage cylinder 2 workbenches are adjusted to the central shaft position of the straight tube inwall that will gather, afterwards, automatically to control three-stage cylinder by the motor program of finishing in advance flexible for industrial computer.Three-stage cylinder is often walked a step pitch and is stopped, and then, servomotor 6 drives industrial camera 1 rotation inwall is carried out to image acquisition, and gathered image is transferred back in computing machine.After the section that has gathered this fixed length step pitch until 360 degree, three-stage cylinder 2 continues to step pitch of front stretching, then repeats the cross-section image scanning collection of 360 these step pitches of degree, repeatedly like this, until complete straight tube inwall all surfaces optical scanning image acquisition.In the process gathered, image will transmit and store into computing machine successively.

Follow-uply the inwall imagery exploitation image that gathered out can be processed with identification software and be processed it, for the quality testing personnel mark out position and the characteristic information of the defect that inner wall surface exists.

Claims (2)

1. an inner wall surface defect image harvester, it is characterized in that, this inwall image collecting device is comprised of industrial camera, servomotor, three-stage cylinder, locking cylinder, cylinder bracket, quiet air pump, industrial computer, control enclosure and moving body, wherein, industrial camera is arranged on the camera fixed mount, the camera fixed mount utilizes flat key to be connected with minor axis, and minor axis is connected with servomotor by shaft coupling again; Servomotor is fixed on the servomotor erecting frame, and is threaded connection the front end at the three-stage cylinder cylinder rod; Three-stage cylinder is arranged on the three-stage cylinder carriage, and the elevating mechanism of three-stage cylinder carriage is comprised of the locking cylinder of two symmetrical parallel configurations; The cylinder rod of locking cylinder connects auxiliary by cylinder and is connected to three-stage cylinder carriage bottom, and the locking cylinder afterbody is fixed on moving body; Locking cylinder is by quiet air pump as source of the gas, and quiet air pump is placed in the air pump cabinet of moving body; Optical ranging pick-up unit-laser range finder also is installed on the three-stage cylinder carriage; Be configured in air pump cashier's office in a shop as the industrial computer of control section and programmable movements control card and servo-driver, control enclosure.
2. inner wall surface defect image harvester according to claim 1, it is characterized in that: insert the programmable movements control card on the pci bus expansion slot of industrial control computer mainboard, the CPU of the CPU of industrial computer and programmable movements control card forms master-slave mode dual micro processor structure, between industrial computer and programmable movements control card, by pci bus, realizes real-time Communication for Power.
CN201320384117.5U 2013-06-30 2013-06-30 Inner wall surface defect image acquiring device CN203385680U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104297261A (en) * 2014-10-14 2015-01-21 北京工业大学 Deep-hole inner-wall imaging system
CN105259183A (en) * 2015-10-30 2016-01-20 桂林永福龙港绿色环保建材有限公司 Movable partition board material surface crack detection device
CN106093335A (en) * 2016-05-30 2016-11-09 宿迁市三石包装容器有限公司 The internal impurity detection device of metallic packing pail
CN106226325A (en) * 2016-07-22 2016-12-14 广东工业大学 A kind of seat surface defect detecting system based on machine vision and method thereof
CN104374779B (en) * 2014-09-29 2017-02-15 北京工业大学 Multifunctional inner wall surface nondestructive test device
CN109974610A (en) * 2019-02-26 2019-07-05 广东核电合营有限公司 A kind of nuclear power plant's video check and deformation measuring device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104374779B (en) * 2014-09-29 2017-02-15 北京工业大学 Multifunctional inner wall surface nondestructive test device
CN104297261A (en) * 2014-10-14 2015-01-21 北京工业大学 Deep-hole inner-wall imaging system
CN105259183A (en) * 2015-10-30 2016-01-20 桂林永福龙港绿色环保建材有限公司 Movable partition board material surface crack detection device
CN106093335A (en) * 2016-05-30 2016-11-09 宿迁市三石包装容器有限公司 The internal impurity detection device of metallic packing pail
CN106226325A (en) * 2016-07-22 2016-12-14 广东工业大学 A kind of seat surface defect detecting system based on machine vision and method thereof
CN109974610A (en) * 2019-02-26 2019-07-05 广东核电合营有限公司 A kind of nuclear power plant's video check and deformation measuring device

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