CN103776533A - Multi-photography synchronous spectrum collection system for measuring temperature and concentration of multi-component welding arc - Google Patents
Multi-photography synchronous spectrum collection system for measuring temperature and concentration of multi-component welding arc Download PDFInfo
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- CN103776533A CN103776533A CN201410038242.XA CN201410038242A CN103776533A CN 103776533 A CN103776533 A CN 103776533A CN 201410038242 A CN201410038242 A CN 201410038242A CN 103776533 A CN103776533 A CN 103776533A
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Abstract
The invention provides a multi-photography synchronous spectrum collection system for measuring temperature and concentration of a multi-component welding arc. The multi-photography synchronous spectrum collection system for measuring temperature and concentration of the multi-component welding arc comprises an arc output power supply, a plurality of high-speed photography systems, a synchronous triggering device, a collection board card and a computer, wherein the arc output power supply produces arc plasma, the multiple high-speed photography systems are arranged at the side of the arc plasma, are located at the same plane as the arc plasma, are matched with narrow-band optical filters of different elements to shoot arc images of different wave lengths, the synchronous triggering device controls the multiple high-speed photography systems to achieve synchronous photography and is connected to the computer through the collection board card, the collection board card collects image data obtained by the high-speed photography systems and transmits the image data to the computer, and the computer displays the arc images according to the data. The multi-photography synchronous spectrum collection system for measuring temperature and concentration of the multi-component welding arc obtains the spectral information of the entire arc through one time of exposure and transmission of high-speed data, and simultaneously meets the requirements of the time resolution and the spatial resolution, and therefore the multiple high-speed photography systems can measure a temperature field and a concentration field of the multi-component dynamic arc.
Description
Technical field
The present invention relates to temperature and measurement of concetration field, particularly two high-speed photography synchronous spectrum harvesters of bi-component welding arc plasma temperature and measurement of concetration.
Background technology
The temperature of arc-plasma and concentration are two important and basic parameters describing in welding process, the basic sign of the various physical-chemical reactions in Ye Shi welding arc district and metallurgical reaction, and it directly has influence on appearance of weld and welding quality.Welding arc physics process is a dynamic process, by helping to weld researcher to its research and engineering circles personage more effectively utilizes electric arc, and realize the control to welding arc dynamic process, this is the target that welding researcher and engineering circles personage seek assiduously always.
In welding process, the spectroscopic methodologies that adopt are measured arc-plasma more, and conventional spectra collection system mainly contains spectrometer acquisition system and high-speed photography acquisition system.Electric arc acquisition system based on spectrometer is used grating as beam splitting system at present, adopts CCD as detector simultaneously, is characterized in scanning the spectrum in very large wavelength coverage, and instrument spectral resolution is higher; But this device scan speed is slow/very flexible, and the two-dimensional space that can not simultaneously obtain plasma light spectral intensity distributes, and expensive, thereby its usable range has been subject to greatly restriction, is also unfavorable for the real-time change feature of research welding dynamic process.High-speed photography system, because single exposure can obtain the intensity distributions of whole electric arc, not only can obtain the space distribution of electric arc, and can monitor the real-time change feature of electric arc, so be applicable to being applied to the detection of welding arc dynamic process.And existing high-speed photography system is normally for the arc-plasma of single component, suppose in electric arc to only have a kind of chemical composition, therefore only need can reflect by measuring the temperature of electric arc the physical characteristics of electric arc.And multi-component arc-plasma is not identical owing to existing lamination to weld the CONCENTRATION DISTRIBUTION of front mixed uniformly blanket gas diverse location in welding process, so need to measure the temperature of electric arc and two parameters of concentration and characterize the physical characteristics of electric arc.Therefore, multi-component physical characters of arc is measured needs more spectral information, can not meet the requirement of measurement of multi-components in the past, thereby need to carry out improvement and perfection to high-speed photography system in the past for the high-speed photography system of single component electric arc.
Therefore, in order to meet the measurement to polycomponent plasma arc basic parameter, not only need to obtain the space distribution of electric arc, and need to obtain the real-time change feature of electric arc, simultaneously in order to reduce the systematic error of whole measuring process, expectation can have a kind of system to have stronger applicability, has good time and spatial resolution simultaneously.Therefore, the present invention is directed to the dynamic welding arc of polycomponent and invented a kind of many high-speed photographies synchronous spectrum acquisition system that can not only meet the multi-component demand of electric arc and can reflect the behavioral characteristics of electric arc real-time change.
Summary of the invention
For defect of the prior art, for meeting the measurement requirement of polycomponent welding arc temperature and concentration, and real-time to system and the requirement of convenience, the invention provides many high-speed photographies synchro system of a kind of polycomponent welding arc temperature and measurement of concetration.
According to many photographies synchronous spectrum acquisition system of polycomponent welding arc temperature measurement of concetration provided by the invention, comprising: electric arc out-put supply, multiple high-speed photography system, synchronous triggering device, analog input card and computing machine;
Electric arc out-put supply is for generation of arc-plasma; High-speed photography system is arranged on arc plasma side, by coordinating from the narrow band pass filter of different elements the electric arc image of taking different wave length (characteristic spectrum); Synchronous triggering device is used for controlling described multiple high-speed photography system and realizes synchronous shooting; Synchronous triggering device is connected to computing machine by analog input card, and analog input card transfers to computing machine for the image data acquiring that high-speed photography system is obtained, and computing machine demonstrates electric arc image for basis from the data of analog input card.
Preferably, each high-speed photography system comprises: neutral colour filter, narrow band pass filter, industrial lens, CCD high speed camera.
Light path from from arc-plasma to each CCD high speed camera, be disposed with neutral colour filter, narrow band pass filter, industrial lens; CCD high speed camera connects synchronous triggering device.Narrow band pass filter in different described light paths is respectively the narrow band pass filter of different centre wavelengths.
Preferably, the centre wavelength of narrow band pass filter is for realizing electric arc total radiation image to the conversion of choosing singlet line radiation image in wavelength band, each high-speed photography system is all chosen the narrow band pass filter of the corresponding different wave length of different elements, coordinate with neutral colour filter simultaneously, light intensity is suitably decayed, make light intensity in CCD high speed camera can receive and undersaturated scope within.
Preferably, industrial lens is selected the M7528-MP industrial lens of the image C omputar of Daheng series.
Preferably, while measuring bi-component arc-plasma, the quantity of high-speed photography system is two, and these two high-speed photography systems lay respectively at the both sides of arc-plasma and coaxially arrange.
Compared with prior art, the present invention has following beneficial effect:
The present invention has not only overcome classic method because scanning can not obtain the shortcoming of whole arc spectral information to welding arc simultaneously, also overcome traditional single high-speed photography system and can only measure the shortcoming of single component arc temperature, thereby adopt many high-speed photography systems to obtain the spectral information of whole electric arc by single exposure and high speed data transfer, meet the requirement of time and spatial resolution simultaneously, and adopted many high-speed photography systems to meet the measurement of polycomponent dynamic arc temperature field and concentration field.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is device schematic diagram of the present invention.
In figure:
1 is mixed gas;
2 is electric arc out-put supply;
3 welding job platforms;
401,402 be respectively tripod A, tripod B;
5,6 are respectively CCD high-speed photography system A, CCD high-speed photography system B;
501,601 are respectively neutral colour filter A, neutral colour filter B;
502 is the narrow band pass filter of a kind of element in corresponding multiple element;
602 is the narrow band pass filter of another kind of element in corresponding multiple element;
503,603 are respectively industrial lens A, industrial lens B;
504,604 are respectively CCD high speed camera A, CCD high speed camera B;
7 is synchronous triggering device;
8 is capture card;
9 is computing machine.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The invention provides a kind of polycomponent welding arc temperature field based on standard temperature method and many high-speed photographies synchronous spectrum acquisition system of concentration field measurement, comprise multiple high-speed photography systems (only illustrating in Fig. 1 that two as signal) and synchronous triggering device.Wherein each high-speed photography system includes the tripod of neutral colour filter, narrow band pass filter, industrial lens, CCD high speed camera and fixing described CCD high speed camera, the narrow band pass filter that described multiple high-speed photography system comprises is respectively the narrow band pass filter of the corresponding different wave length of different elements, wherein, described industrial lens is arranged on described CCD high speed camera, in the outside direction of industrial lens, is disposed with described narrow band pass filter and neutral colour filter.
Particularly, feature of the present invention is that its formation comprises electric arc out-put supply, multiple high-speed photography system, synchronous triggering device and computing machine.Wherein each high-speed photography system comprises the tripod of neutral colour filter, narrow band pass filter, industrial lens, CCD high speed camera and fixation of C CD high speed camera, and the narrow band pass filter that described multiple high-speed photography systems comprise is respectively the narrow band pass filter of corresponding different elements.Each high-speed photography system coordinates the narrow band pass filter of different elements, the centre wavelength of described narrow band pass filter is decided by the particle spectral line of required analysis, it can realize electric arc total radiation image to the conversion of choosing singlet line radiation image in wavelength band, coordinate with neutral colour filter simultaneously, also can suitably decay to light intensity, make it in high speed camera can receive and undersaturated scope within.Described camera lens is selected the M7528-MP industrial lens of the image C omputar of Daheng series, and it is imaged on obtained singlet line radiation image imaging in the CCD plane of high speed camera, makes electric arc image corresponding with each location of pixels.Described synchronous device is for realizing the synchronous shooting of two width images.Described computing machine is used for the image of gained to show.The annexation of above-mentioned parts is as follows:
One end of described electric arc out-put supply is connected with sparking electrode, and the object that the other end is relative with described sparking electrode is connected, thereby produces arc-plasma.The light that described arc-plasma sends is respectively after the narrow band pass filter of neutral colour filter in the same plane around electric arc and different elements, become respectively the singlet line radiation image of multiple different wave lengths, be imaged in described CCD high speed camera plane through described industrial lens, and by data transmission and capture card, the multiple image of gained shown.Wherein neutral colour filter, narrow band pass filter, industrial lens, the interface of CCD high speed camera is standard fitting, can be connected by screw thread, is then fixed on corresponding tripod, is convenient to regulate and carry.So do not need optical table just can realize the collection of image, and reduced the requirement to light path precision.For guaranteeing that multiple CCD high-speed photography systems photograph the synchronism of different spectral line electric arc images, use synchronous device to send trigger pip to CCD high speed camera.And by the transmission of data, image is simultaneously displayed in computing machine.
Give an example with regard to the embodiment of measuring bi-component arc-plasma below, wherein utilized two high-speed photography systems, and coordinate the narrow band pass filter of different elements.This embodiment is for measuring welding arc temperature and the CONCENTRATION DISTRIBUTION of the protection of argon nitrogen mixture gas.
Synchronous measuring apparatus in this concrete enforcement is referring to Fig. 1, and it provides imaging data for measuring, and two CCD high-speed photography systems in this embodiment are taken respectively the arc plasma volume image of ArI794.8nm and two spectral lines of NI904.6nm.Two CCD high-speed photography systems lay respectively at the both sides of electric arc, parallel with electric arc and in same straight line.A CCD high-speed photography system comprises that neutral colour filter, centre wavelength are ArI794.8nm narrow band pass filter, industrial lens, CCD high speed camera, and another CCD high-speed photography system comprises that neutral colour filter, centre wavelength are NI904.6nm narrow band pass filter, industrial lens, CCD high speed camera.
Electric arc out-put supply produces arc-plasma, the light that arc-plasma sends is in one direction after the narrow band pass filter of neutral colour filter and ArI794.8nm, obtain the electric arc image of ArI794.8nm spectral line, through industrial lens, image is presented on to the plane of CCD high speed camera.In another direction, after the narrow band pass filter of neutral colour filter and NI904.6nm, obtain the electric arc image of NI904.6nm spectral line, through industrial lens, image is presented on to the plane of CCD high speed camera.Synchronous device sends trigger pip to CCD high speed camera, and CCD high-speed photography system starts to gather electric arc image.Through data transmission and board collection, in computing machine, demonstrate the electric arc image distribution of ArI794.8nm spectral line and NI904.6nm spectral line.Calculate temperature and the CONCENTRATION DISTRIBUTION of electric arc according to bi-component standard temperature method.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (4)
1. many photographies synchronous spectrum acquisition system of polycomponent welding arc temperature measurement of concetration, is characterized in that, comprising: electric arc out-put supply, multiple high-speed photography system, synchronous triggering device, analog input card and computing machine;
Electric arc out-put supply is for generation of arc-plasma; High-speed photography system is arranged on arc plasma side, and in the same plane with arc-plasma, coordinates the narrow band pass filter of different elements to take the electric arc image of different wave length; Synchronous triggering device is used for controlling described multiple high-speed photography system and realizes synchronous shooting; Synchronous triggering device is connected to computing machine by analog input card, and analog input card transfers to computing machine for the image data acquiring that high-speed photography system is obtained, and computing machine demonstrates electric arc image for basis from the data of analog input card.
2. many photographies synchronous spectrum acquisition system of polycomponent welding arc temperature measurement of concetration according to claim 1, is characterized in that, each high-speed photography system comprises: neutral colour filter, narrow band pass filter, industrial lens, CCD high speed camera; The narrow band pass filter that described multiple high-speed photography system comprises is respectively the narrow band pass filter of corresponding different elements;
Light path from from arc-plasma to each CCD high speed camera, be disposed with neutral colour filter, narrow band pass filter, industrial lens; CCD high speed camera connects synchronous triggering device.
3. many photographies synchronous spectrum acquisition system of polycomponent welding arc temperature measurement of concetration according to claim 2, it is characterized in that, described multiple high-speed photography system coordinates respectively the narrow band pass filter of corresponding different elements, the centre wavelength of narrow band pass filter is for realizing electric arc total radiation image to the conversion of choosing singlet line radiation image in wavelength band, coordinate with neutral colour filter simultaneously, light intensity is suitably decayed, make light intensity within the receivable and unsaturated scope of CCD high speed camera.
4. many photographies synchronous spectrum acquisition system of polycomponent welding arc temperature measurement of concetration according to claim 1, it is characterized in that, while measuring bi-component arc-plasma, the quantity of high-speed photography system is two, and coordinate the narrow band pass filter of different elements, these two high-speed photography systems lay respectively at the both sides of arc-plasma and coaxially arrange.
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| CN108834295A (en) * | 2018-06-21 | 2018-11-16 | 北京工业大学 | The luminous multiple imaging Synchronous device of different elements in a kind of plasma |
| CN109175364A (en) * | 2018-09-28 | 2019-01-11 | 江苏大学 | A kind of laser gain material device and its method of increasing material manufacturing |
| CN113030626A (en) * | 2021-03-25 | 2021-06-25 | 苏州电器科学研究院股份有限公司 | Simulated fault arc detection system |
| CN114554090A (en) * | 2022-02-21 | 2022-05-27 | 天津大学 | Controllable self-triggering image acquisition system and method based on electric signal monitoring |
| CN115273417A (en) * | 2022-07-29 | 2022-11-01 | 陕西西高开关有限责任公司 | High-voltage power equipment insulation fault detection early warning method and detection early warning system |
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| CN109175364A (en) * | 2018-09-28 | 2019-01-11 | 江苏大学 | A kind of laser gain material device and its method of increasing material manufacturing |
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Application publication date: 20140507 |