CN105675115B - A kind of online vibration measuring system of laser-Doppler and method - Google Patents
A kind of online vibration measuring system of laser-Doppler and method Download PDFInfo
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- CN105675115B CN105675115B CN201610032741.7A CN201610032741A CN105675115B CN 105675115 B CN105675115 B CN 105675115B CN 201610032741 A CN201610032741 A CN 201610032741A CN 105675115 B CN105675115 B CN 105675115B
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- laser
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- vibration measuring
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- doppler
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
A kind of online vibration measuring system of laser-Doppler of the present invention and method; executing agency is entered and left including dynamic Laser vibration measuring unit, auxiliary vibration measuring probe, vibration isolation detection station and workpiece; can make an uproar feature for the vibration of every product; the best test position of adjust automatically; whether real-time detection, judgement and differentiation detected product are qualified; the product testing that can be directly used for production line makes laser doppler vibration measuring technology in large-scale production field popularization application.
Description
Technical field
The present invention relates to a kind of online vibration measuring system and methods, specifically, being related to a kind of online vibration measuring of laser-Doppler
System and method.
Background technique
Digitalized laser vibration measuring technology based on Doppler effect is widely used in electromechanical, power device vibration characteristics
Non-contact testing and its stress-strain data, map acquisition compared with, analyze, including engine, automobile, vehicle, household electric
The research relevant to vibration of the electrical categories such as device product, quality testing, the assessment of design experiment and manufactured goods.
Existing portable laser doppler vialog, is integrated with advanced optical measuring technique and Digital Signal Processing,
Not only measurement is quick, accuracy is high, and the storage of map and data, processing function are complete, and main screw lift is light, carry and use
It is convenient, it is suitble to be tested individually under single machine experimental situation by test agent, exemplar, to grind point that examination personnel carry out vibration characteristics
Analysis, comparison and judgement provide accurate detection data.
But in terms of product vibration measuring, vibration, the noise measuring of production line bulk article are not only with certain rhythm
Continuous duplicate continuous process, and require detection device that can make an uproar for the vibration of every product feature, adjust automatically is most preferably tested
Position, whether real-time detection, judgement and differentiation detected product are qualified, since existing common laser doppler vialog does not have
Repertoire required by standby product testing, it is difficult to be directly used in the product testing of production line, constrain laser doppler
Popularization and application of the vibration measuring technology at large-scale production scene.
Summary of the invention
The present invention overcomes the disadvantages of the prior art, provides a kind of online vibration measuring system of laser-Doppler and method,
Single machine detection can not only fast and accurately be carried out in a non contact fashion in a production environment, moreover it is possible to which Automatic Optimal test point is sentenced
Fixed, record and processing substandard product, realize full-automatic online vibration measuring.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of online vibration measuring system of laser-Doppler, including dynamic Laser vibration measuring unit, auxiliary vibration measuring probe, vibration isolation detection
Station and workpiece enter and leave executing agency.
Further, the dynamic Laser vibration measuring unit includes the accessory and core component of dynamic Laser measurement, auxiliary
Help component that SPEED VISION 6 DOF dynamic measurement module is set, the SPEED VISION 6 DOF dynamic measurement module includes three face battle arrays
Ccd image acquires sensor, and three Doppler's dynamic measurement laser heads are arranged in core component, and an Array CCD acquisition passes
Sensor and Doppler's dynamic measurement laser head combination, it is each to combine three phases for being placed in vibration isolation detection station described in face
On the station of vertical plane.
Further, the auxiliary vibration measuring probe includes acceleration transducer, and core component further includes accurate measurement core component, institute
Stating accurate measurement core component further includes the deflection pointing device that laser head is measured for adjusting Doppler's dynamic.
Further, the vibration isolation detection station includes Workpiece carrier platform, elastic damping component and inertia vibration suppression component, institute
State the bottom that elastic damping component is set to the Workpiece carrier platform.
Further, the inertia vibration suppression component is the mass block that the Workpiece carrier mesa base is arranged, the mass block
Weight is at least 20-30 times of its surface carrying workpiece weight.
Further, it includes the isolation transfer device in station and the shunting transfer outside station that the workpiece, which enters and leaves executing agency,
Device.
Further, the image of workpiece code identification probe, industrial CCD vision-based detection is also set up in the vibration isolation detection station
Acquisition probe, testing result printing head.
A kind of online vibration measuring method of laser-Doppler, when measured workpiece enters in front of vibration isolation detection station with assembly line, by
After transfer device feeding vibration isolation detection station is isolated, the SPEED VISION 6 DOF of the accessory of dynamic Laser vibration measuring unit measures mould
Block carries out quick bigness scale to the sextuple dynamic characteristics of points a large amount of on workpiece, according to the distribution of each point bigness scale data with than
Right, the accurate measurement positioning coordinate for calculating, extracting several key positions sends the host computer of control deflection pointing device to, by host computer
Doppler's dynamic measurement laser head of control core component aims at key measurement point and carries out high-acruracy survey；Dynamic Laser vibration measuring list
The low frequency movement data that the high frequency motion data that measure to core component of master control PC of member, accessory measure carry out General Office
Reason, and compares with preset acceptable criterion, determines whether product vibration is made an uproar qualified and drive executing agency to qualified product, do not conform to
Lattice product are labeled or shunt transfer.
It further, further include that the information data detected to laser head vibration acceleration sensor carries out software vector meter
It calculates, eliminates interference of laser head itself vibration for measured workpiece vibration information.
It further, further include that defective item data are directly printed on the body of substandard product, printing trace can
Erasing.
Compared with prior art, the beneficial effects of the present invention are:
A kind of online vibration measuring system of laser-Doppler of the present invention and method, can make an uproar feature for the vibration of every product,
The best test position of adjust automatically, whether real-time detection, judgement and differentiation detected product are qualified, can be directly used for production flowing water
The product testing of line makes laser doppler vibration measuring technology in large-scale production field popularization application.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and is used to explain the present invention together with embodiments of the present invention,
It is not construed as limiting the invention, in the accompanying drawings:
Fig. 1 is a kind of online vibration measuring flow chart of the online vibration measuring system of laser-Doppler of the present invention；
Fig. 2 is a kind of online vibration measuring system block diagram of the online vibration measuring system of laser-Doppler of the present invention；
Fig. 3 is a kind of online layout of the online vibration measuring system of laser-Doppler of the present invention；
Fig. 4 is dynamic Laser vibration measuring cell schematics；
Fig. 5 is the structural schematic diagram of vibration isolation station.
In figure, 1 --- Doppler's dynamic measurement laser head；2 --- acceleration transducer；
3 --- isolation spring；4 --- isolation transfer device；
5 --- control cabinet；6 --- data collecting card；
7 --- master control PC machine；8 --- mass block；
9 --- workpiece code identification probe；10 --- vibration isolator；
11 --- tested outdoor machine of air-conditioner；12 --- deflection pointing device.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
As shown in Fig. 1 to 5, a kind of online vibration measuring system of laser-Doppler of the present invention, including dynamic Laser vibration measuring list
Member, auxiliary vibration measuring probe, vibration isolation detection station, workpiece enter and leave executing agency.
Dynamic Laser vibration measuring unit includes the accessory and core component of dynamic Laser measurement, and accessory setting is high
Fast vision 6 DOF dynamic measurement module, core component setting Doppler's dynamic measurement laser head 1, channeling, multiple spot, multiband
Automatic Optimal detection system；The acceleration transducer 2 for assisting vibration measuring probe, for detecting laser head itself vibration information, school
Just itself interference of the vibration to testing result；Vibration isolation detection station includes the station components such as Workpiece carrier platform and its elastic damping structure
Part, inertia vibration suppression component, shielding and the influence for blocking production scene vibration source to examine vibration measuring, elastic damping component use vibration isolation bullet
Spring 3；It includes the isolation transfer device 4 in station and the shunting transfer device outside station, core component that workpiece, which enters and leaves executing agency,
It further include accurate measurement core component, accurate measurement core component further includes aiming at for adjusting the deflection of Doppler's dynamic measurement laser head 1
Mechanism 12.
Dynamic Laser vibration measuring unit is also sequentially connected control cabinet 5, for the data collecting card of data acquisition and storage system
6, master control PC machine 7 and its analysis software etc..
8 weight of mass block of the present embodiment inertia vibration suppression component set by detection station is at least its surface carrying workpiece
20-30 times of weight.
Also set up in vibration isolation detection station workpiece code identification probe 9, the image acquisition of industrial CCD vision-based detection probe,
Testing result printing head.
The present invention also provides a kind of online vibration measuring methods: when measured workpiece enters in front of vibration isolation detection station with assembly line,
After being sent into vibration isolation detection station by isolation transfer device 4, the SPEED VISION 6 DOF of dynamic Laser vibration measuring unit accessory is measured
Module carries out quick bigness scale to the sextuple dynamic characteristics of points a large amount of on workpiece, according to the distribution of each point bigness scale data with than
It is right, it calculates and extracts the crucial measurement position of several optimizations, forms accurate measurement positioning coordinate, by master control upper computer control core group
The deflection pointing device 12 of part guides Doppler's dynamic measurement laser head 1 to aim at crucial measurement position and carries out high-acruracy survey.Swash
The low frequency fortune that high frequency motion data that the master control PC machine 7 of photokinesis vibration measuring unit measures core component, accessory measure
Dynamic data carry out integrated treatment, and compare with preset acceptable criterion, determine whether product vibration is made an uproar qualified and drive execution
Mechanism is labeled or shunts transfer to qualified product, rejected product.
The data processing of online vibration measuring method further includes the information data detected to laser head vibration acceleration sensor 2
The calculating of software vector is carried out, interference of laser head itself vibration for measured workpiece vibration information is eliminated.
The detection of online vibration measuring system, processing method further include directly printing nonconformance on the body of substandard product
Mesh number evidence, printing trace are erasable.
For Fig. 3 to the online vibration measuring system figure of 5 outdoor machine of air-conditioner, Fig. 3 is that outdoor machine of air-conditioner enters vibration isolation detection station, dynamic Laser
Vibration measuring unit detects outdoor machine of air-conditioner, and Fig. 4 is dynamic Laser vibration measuring unit connection LDV control cabinet 5, the connection of LDV controller
Data collecting card 6, data collecting card 6 connect master control PC machine 7, and the data that dynamic Laser vibration measuring unit obtains pass through master control PC machine 7
Display.
As shown in figure 5, outdoor machine of air-conditioner is placed on Workpiece carrier platform, workpiece code identification probe 9 is arranged outside air-conditioning
Above machine, Workpiece carrier platform upper surface is laid with vibration isolator 10, and the Doppler's dynamic being mounted on deflection pointing device 12 measures
Laser head 1,2 face of acceleration transducer are tested outdoor machine of air-conditioner 11 and are arranged, and mass block 8, quality is arranged in Workpiece carrier mesa base
Isolation spring 3 is set between block 8 and ground, is transported to subsequent processing by the way that transfer device 4 is isolated.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, but it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (7)
1. a kind of online vibration measuring system of laser-Doppler, which is characterized in that visited including dynamic Laser vibration measuring unit, auxiliary vibration measuring
Head, vibration isolation detection station and workpiece enter and leave executing agency；
The dynamic Laser vibration measuring unit includes the accessory and core component of dynamic Laser measurement, and accessory setting is high
Fast vision 6 DOF dynamic measurement module, the SPEED VISION 6 DOF dynamic measurement module include that three Array CCD acquisitions pass
Sensor, core component are arranged three Doppler dynamic measurement laser heads, an Array CCD acquisition sensor and more than one it is general
Dynamic measurement laser head combination is strangled, it is each to combine the station for being placed in three perpendicular planes of vibration isolation detection station described in face
On；
The auxiliary vibration measuring probe includes acceleration transducer, and core component further includes accurate measurement core component, the accurate measurement core
Component further includes the deflection pointing device that laser head is measured for adjusting Doppler's dynamic；
After measured workpiece enters in front of vibration isolation detection station with assembly line, is sent into vibration isolation detection station by isolation transfer device,
The SPEED VISION 6 DOF measurement module of the accessory of dynamic Laser vibration measuring unit is special to the sextuple dynamic of points a large amount of on workpiece
Property carry out quick bigness scale, according to the distribution of each point bigness scale data and compare, the accurate measurement for calculating, extracting several key positions is determined
Position coordinate sends the host computer of control deflection pointing device to, measures laser by Doppler's dynamic of PC control core component
Head aims at key measurement point and carries out high-acruracy survey；The master control PC of dynamic Laser vibration measuring unit transports the high frequency that core component measures
The low frequency movement data that dynamic data, accessory measure carry out integrated treatment, and compare with preset acceptable criterion, determine
Whether product vibration makes an uproar qualified and executing agency is driven qualified product, rejected product to be labeled or shunted transfer.
2. the online vibration measuring system of a kind of laser-Doppler according to claim 1, which is characterized in that the vibration isolation detection station
Including Workpiece carrier platform, elastic damping component and inertia vibration suppression component, the elastic damping component is set to the workpiece and holds
The bottom of carrying platform.
3. the online vibration measuring system of a kind of laser-Doppler according to claim 2, which is characterized in that the inertia vibration suppression component
For the mass block that the Workpiece carrier mesa base is arranged, the mass block weight is at least its surface carrying workpiece weight
20-30 times.
4. the online vibration measuring system of a kind of laser-Doppler according to claim 1, which is characterized in that the workpiece, which enters and leaves, to be executed
Mechanism includes the isolation transfer device in station and the shunting transfer device outside station.
5. the online vibration measuring system of a kind of laser-Doppler according to claim 1, which is characterized in that the vibration isolation detection station
Inside also set up image acquisition probe, the testing result printing head of workpiece code identification probe, industrial CCD vision-based detection.
6. the online vibration measuring system of a kind of laser-Doppler according to claim 1, which is characterized in that further include shaking to laser head
The information data that dynamic acceleration transducer detects carries out the calculating of software vector, eliminates laser head itself vibration for measured workpiece
The interference of vibration information.
7. the online vibration measuring system of a kind of laser-Doppler according to claim 1, which is characterized in that further include in unqualified production
Defective item data are directly printed on the body of product, printing trace is erasable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610032741.7A CN105675115B (en) | 2016-01-18 | 2016-01-18 | A kind of online vibration measuring system of laser-Doppler and method |
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| CN201610032741.7A CN105675115B (en) | 2016-01-18 | 2016-01-18 | A kind of online vibration measuring system of laser-Doppler and method |
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| CN105675115A CN105675115A (en) | 2016-06-15 |
| CN105675115B true CN105675115B (en) | 2019-03-12 |
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Families Citing this family (6)
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| CN105953909A (en) * | 2016-06-28 | 2016-09-21 | 佛山科学技术学院 | Home appliance vibration automatic detection system and method based on laser displacement sensors |
| CN107328463A (en) * | 2017-07-25 | 2017-11-07 | 中国电力科学研究院 | A kind of overhead transmission line contactless vibration measuring method at a distance |
| CN110865158B (en) * | 2019-12-10 | 2023-08-18 | 浙江大学 | Nondestructive testing device and method for internal quality of fruits |
| CN111637999B (en) * | 2020-04-23 | 2021-08-24 | 浙江恒澜科技有限公司 | Chemical fiber filament tension online detection method and device based on laser vibration measurement |
| CN111637960B (en) * | 2020-04-26 | 2021-08-27 | 河海大学 | Vibration measuring system for eliminating vibration influence of base point of laser vibration meter |
| CN113657426A (en) * | 2021-06-28 | 2021-11-16 | 国网江苏省电力有限公司电力科学研究院 | Heating-vibration combined detection method, device and system for GIL electric contact state |
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