CN201885689U - High speed non-contact sensor for impact displacement linear array - Google Patents
High speed non-contact sensor for impact displacement linear array Download PDFInfo
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- CN201885689U CN201885689U CN2010206318706U CN201020631870U CN201885689U CN 201885689 U CN201885689 U CN 201885689U CN 2010206318706 U CN2010206318706 U CN 2010206318706U CN 201020631870 U CN201020631870 U CN 201020631870U CN 201885689 U CN201885689 U CN 201885689U
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Abstract
The utility model discloses a high speed non-contact sensor for an impact displacement linear array, which is characterized by comprising a shell, a bracket, an optical lens, a view-finder, a linear array sensing element and a USB (Universal Serial Bus) online cable, wherein the front end of the shell is provided with a lens mounting hole, and the rear end of the shell is provided with a view-finding hole; the bracket is movably connected with the shell; the optical lens is embedded in the lens mounting hole at the front end of the shell; the view-finder is arranged in the shell opposite to the lens, wherein the rear end of the view-finder is opposite to the view-finding hole at the rear end of the shell or embedded in the view-finding hole at the rear end of the shell; the linear array sensing element is adjacent to one side of the view frosted glass and opposite to the lens; and the USB online cable is electrically connected with the output terminal of the linear array sensing element. The sensor is used for measuring the impact deformation of an anti-impact element of a measured object; the distribution of the measuring point is convenient and easy due to non-contact measurement; the measuring information is abundant; the measuring point of the impact deformation can be conveniently added; and the measuring signal is incapable of being drifted obviously even if the acceleration of the impact is large. The high speed non-contact sensor for the impact displacement linear array has the characteristics of relatively higher precision, good reliability, strong adaptability, convenience for mounting, and the like.
Description
Technical field
The utility model belongs to the shock-testing field of mechanical driver unit, relates in particular to the contactless impact displacement line of a kind of high speed array sensor.
Background technology
The shock-produced deformation of anti-impact element is measured and is adopted electric measuring method or simple and easy method usually, wherein electric measuring method uses the contact deformation-sensor usually, as rod-pulling type slide wire resistance sensor etc., during use sensor is fixed in tested anti-impact element two ends, test the time-domain curve of this element in impact process, though this electric measuring method has precision preferably, but install inconvenient, especially when explosive yield is very big, the rod-pulling type deformation-sensor usually fractures owing to two ends are affixed, and influence is measured.Simple measurement method comprises methods such as plasticine or needle tubing, and these methods are simple and easy to usefulness, but measuring accuracy is limited, and can only testing element shock-produced deformation peak value, can not test the distortion time-domain curve.
Summary of the invention
The utility model is the contactless impact displacement line of a kind of high speed array sensor that provides for the above-mentioned shortcoming that overcomes the prior art existence, the contactless impact displacement line of this high speed array sensor is with simple and practical feasible technology, be applied to non-contactly during the shock-produced deformation of anti-impact element measures, have measuring accuracy height, good reliability, easy for installation, characteristics such as cost is low.
The technical scheme that the utility model is taked is: the contactless impact displacement line of high speed array sensor, be characterized in, and comprising: a casing, described casing front end is provided with the camera lens placement hole, and the rear end is provided with view aperture; One support flexibly connects with casing; One optical lens is embedded in the camera lens placement hole of casing front end; One view finder is arranged in the described casing, and is relative with described camera lens, and the rear end of this view finder is relative with the view aperture of described casing rear end, or is embedded in the view aperture of described casing rear end; One linear array sensing element, adjacent with described scenic focal point frosted glass one side, and relative with described camera lens; The online cable of one USB is electrically connected with the output terminal of described linear array sensing element.
The contactless impact displacement line of above-mentioned high speed array sensor, wherein, described support takes the shape of the letter U, and its two side roof part and casing both sides flexibly connect.
The contactless impact displacement line of above-mentioned high speed array sensor, wherein, the height of described support is fixing, or is Height Adjustable.
The contactless impact displacement line of above-mentioned high speed array sensor wherein, also comprises pitching scenic focal point adjusting fixed mechanism, and described pitching scenic focal point is regulated fixed mechanism and comprised first and second clamping screws that are arranged on the support both sides; Described support two side roof parts are provided with connecting hole, the position of the connecting hole that corresponding support both sides, described casing both sides are provided with respectively is provided with a bolt hole, described first and second clamping screws pass respectively support separately the connecting hole and the described bolt hole of the casing of a side separately of a side screw togather, regulate scenic focal point angle and fixing.
The contactless impact displacement line of above-mentioned high speed array sensor, wherein, also comprise a left and right sides scenic focal point adjusting fixed mechanism, constitute by one the 3rd clamping screw, described frame bottom is provided with fixed orifice, described the 3rd clamping screw passes the fixed orifice of described frame bottom, and described support is connected with fixture, regulates left and right sides scenic focal point angle and fixing.
The contactless impact displacement line of above-mentioned high speed array sensor, wherein, a side of described linear array sensing element and view finder is close to; Or be provided with the gap with a side of view finder; Described linear array sensing element is all relative with described camera lens with the combination of view finder.
The contactless impact displacement line of above-mentioned high speed array sensor, wherein, described view finder is an optical finder, comprises scenic focal point frosted glass.
The utility model is owing to adopted above technical scheme, and its technique effect of obtaining is tangible:
(1) high-speed record and transmission
What the linear array sensing element write down is the one dimension optical image, image reduces to the one dimension line by two-dimensional frames, every width of cloth amount of image information descends with the order of magnitude, so the image that per second transmits rolls up, and it is thousands of to the images of ten thousand width of cloth with the row composition that the common per second of measuring speed just can reach.If use the line array sensor imaging technique that per second writes down 10,000 width of cloth linear array images, can satisfy the high speed measurement requirement of anti-impact components and parts shock-produced deformation, temporal resolution can reach 0.1 millisecond;
(2) resolution is higher
More than general 2000 pixels of the resolution of linear array sensing element, the line array sensor of 2000 pixel resolutions is enough to satisfy the shock-produced deformation measurement demand of anti-impact components and parts.For example, measure the shock-produced deformation of an anti-impact element, the element yardstick on principal direction is 200 millimeters, and the resolution of measurement reaches 0.2 millimeter, can satisfy the requirement of element shock-produced deformation Measurement Resolution;
(3) non-cpntact measurement
Adopt the utility model to measure the shock-produced deformation of anti-impact element,, removed the influence that sensor itself is hit from owing to be non-cpntact measurement.And general contact deformation-sensor need be connected on the tested anti-impact element measuring point, so the contact deformation-sensor has the limit value that bears acceleration, speed and deformation range, and the utility model line array sensor has only the deformation range limit value;
(4) measuring accuracy is higher
Adopt the utility model to measure the shock-produced deformation of anti-impact element, can reach the accuracy requirement of rod-pulling type deformation-sensor, about per mille.Just can reach the precision of deformation measurement by control shock-produced deformation and measurement range ratio.Linear array is measured the high-speed camera precision can reach expensive, but the utility model need not expensive high-precision camera lens, technical easy realization, and also can carry out linearity correction to signal;
(5) multimetering and signal of video signal are handled
General contact deformation-sensor can only be surveyed the point-to-point transmission folk prescription to distortion.And the utility model can be measured multiple spot, multidirectional shock-produced deformation, what obtain is image information on the slotted line, these image informations result from the feature place on line of anti-impact element surface measurement, can make things convenient for the lines that add some easy identifications vertical as required, therefore can on anti-impact element slotted line, measure a plurality of positions with slotted line.Measuring point information is unified on the relevant slotted line will handle as long as will go up the time, can obtain the reference point distortion.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 be the contactless impact displacement line of the utility model high speed array sensor a kind of embodiment see in the past one-piece construction schematic perspective view from an angle.
Fig. 2 is the one-piece construction schematic perspective view of passing by from another viewpoint of the foregoing description of the contactless impact displacement line of the utility model high speed array sensor.
Fig. 3 is the side view of Fig. 1.
Fig. 4 is the left view (part is analysed and observe) of Fig. 3.
Fig. 5 is the synoptic diagram of the waveform of impulse test model generation by linear array sensing element record of the present utility model.
Fig. 6 is that the waveform that Fig. 5 impulse test model of the contactless impact displacement line of the utility model high speed array sensor record produces is carried the waveform synoptic diagram of back by the computing machine demonstration to computing machine.
Embodiment
See also Fig. 1～Fig. 4, this is the structural representation of a kind of embodiment of the contactless impact displacement line of the utility model high speed array sensor.The contactless impact displacement line of the utility model high speed array sensor comprises: a casing 1, a support 2, an optical lens 3, a view finder 4, a linear array sensing element 5, the online cable 6 of a USB.Wherein: the front end of described casing 1 is provided with camera lens placement hole 11, and the rear end is provided with view aperture 12.Described support takes the shape of the letter U, and its two side roof part and casing both sides flexibly connect.The height of the both sides of this support can be fixing, also can be Height Adjustablely, and its structure example of highly regulating is telescopic as adopting; Or be two-part, adopt the mode that interconnects of bolt screw.The height of present embodiment support both sides is fixed.Described optical lens 3 is embedded in the camera lens placement hole of casing front end, and the described camera lens of present embodiment adopts the about 400 millimeters large diameter magnifier of focal length.Described view finder 4 and linear array sensing element 5 are arranged in the described casing, and be relative with described camera lens, as shown in Figure 4.Described view finder is an optical finder, and present embodiment adopts scenic focal point frosted glass; The rear end of this view finder is relative with the view aperture of described casing rear end, or is embedded as shown in this embodiment in the view aperture of described casing rear end.Described linear array sensing element 5 is used to obtain the waveform of measured object shock-produced deformation, this linear array sensing element 5 is adjacent with described view finder 4 one sides, one side that can be set to described linear array sensing element and view finder is close to, one side that also can be set to described linear array sensing element and view finder is provided with the gap, and described linear array sensing element is all relative with described camera lens with the combination of view finder.Present embodiment selects described linear array sensing element to be close to the structure of view finder one side, and best structure is that described linear array sensing element overlaps with the projection of the center line b of described camera lens with the connecting line a that described view finder is fitted.The online cable 6 of described USB is electrically connected with the output terminal of described linear array sensing element 5, the online cable 6 of this USB is used for carrying to computing machine the waveform of the measured object shock-produced deformation of linear array sensing element 5 outputs, provides working power by computing machine to described linear array sensing element 5 simultaneously.
The contactless impact displacement line of the utility model high speed array sensor also comprises pitching scenic focal point adjusting fixed mechanism, and described pitching scenic focal point is regulated fixed mechanism and comprised first clamping screw 71 and second clamping screw 72; Described support two side roof parts are provided with connecting hole, the position of the connecting hole that corresponding support both sides, described casing both sides are provided with respectively is provided with a bolt hole, the described first tight bolt and second clamping screw pass respectively support separately the connecting hole and the described bolt hole of the casing of a side separately of a side screw togather, regulate pitching scenic focal point angle and fixing.
The contactless impact displacement line of the utility model high speed array sensor also comprises a left and right sides scenic focal point adjusting fixed mechanism, constitute by one the 3rd clamping screw 8, described frame bottom is provided with fixed orifice, described the 3rd clamping screw passes the fixed orifice of described frame bottom, be screwed on the described fixture, regulate left and right sides scenic focal point and described support is fixedlyed connected with fixture.
During use, earlier the described support with the contactless impact displacement line of the utility model high speed array sensor is screwed on the fixture by described the 3rd clamping screw, and its camera lens of left and right adjusting is towards measured object, and fixing.Edge or lines the vertical movement direction, can produce obvious optical image on the linear array sensing element are being set on the testee.Unclamp the first tight bolt and second clamping screw then, regulate the angle of pitch of the contactless impact displacement line of the utility model high speed array sensor, by the viewfinder preview measured object, make image definition, regulate the first and second clamping screw stationary positioned of fixed mechanism again by the pitching scenic focal point.
During measurement, the optical image of measured object sees through on the light-sensitive surface that camera lens projects the linear array sensing element and imaging, the linear array images signal of the linear that is measured by the linear array sensing element continuously reaches computing machine by the online cable of USB, finishes the collection of motor message.
See also Fig. 5, Fig. 5 is that the waveform that the impulse test model produces passes through the synoptic diagram that linear array sensing element 5 writes down in the utility model.Drop type shock testing machine 103 for example is the hydraulic controlling type test-bed, anti-impact element 102 is installed on the table top of testing table 103, the tup 101 of ram hammer 100 discharges the back and freely falls, by the waveform generator of control surge waveform, to the anti-impact element apply one excited by impact.After the tup bounce-back was takeoff, the tup skidding that testing table will fall again prevented from repeatedly to impact.And in the impulse test process, linear array sensing element 5 has write down the multi-point deformetion waveforms such as waveform 105, tup surge waveform 104 and pedestal distortion waveform 106 of anti-impact element.
See also Fig. 6, Fig. 6 is that the waveform that Fig. 5 impulse test model of the contactless impact displacement line of the utility model high speed array sensor record produces is carried the waveform synoptic diagram of back by the computing machine demonstration to computing machine.In the test, line array sensor measuring accuracy basic controlling is within per mille, as can be seen from the figure, except can effectively obtaining the shock-produced deformation of anti-impact element, also obtained table top light exercise situation in the ram hammer collision process of test-bed, have very low frequency and bigger damping because impact stage body, the transient motion situation is difficult to measure then fine this function that realized of the utility model with the rod-pulling type deformation-sensor during collision.Except table top and anti-impact element, also obtain the shock-produced deformation data of other measuring points, comprised drop impact curve 201, detected element top deformation curve 202, detected element upper deformation curve 203, detected element middle part deformation curve 204, detected element lower deformation curve 205 and pedestal deformation curve 206.Ordinate represents to impact displacement (mm) among the figure, horizontal ordinate express time (S).
The utility model is the image of the some points on the contactless measurement anti-impact element, a point only choosing each row of image carries out data acquisition, write down this each change in displacement constantly in the whole impact process under time domain, the image position that each is write down constantly couples together at last, thereby forms this displacement changing curve in whole impact process on the element.Because a point is only write down in each picture position, therefore can reduce the quantity of data collection point greatly, the image that the unit interval transmits rolls up, and shortens writing time, can satisfy high speed impact displacement data Testing requirement.
Adopt the utility model to measure the anti-impact element shock-produced deformation of measured object, owing to be the measurement of noncontact, so the measuring point arrangement convenience is easily capable, metrical information is abundant, can conveniently add the shock-produced deformation measuring point; Even under the very big situation of impact acceleration, measuring-signal is not obviously drift also, and measurement effect is good.
Evidence the utility model is compared with traditional deformation-sensor, and it is higher to have precision, and reliability is better, and strong adaptability, the characteristics such as easy for installation can satisfy the test request of shock-isolator blastic deformation, and moderate, are convenient to the application on the engineering. Can be applicable to stand impact test, floating platform test, especially measure than the blastic deformation in the real ship Underwater Explosion test of huge explosion equivalent, the engineering popularizing application prospect is wide.
Claims (7)
1. the contactless impact displacement line of high speed array sensor is characterized in that, comprising:
One casing, described casing front end is provided with the camera lens placement hole, and the rear end is provided with view aperture;
One support flexibly connects with casing;
One optical lens is embedded in the camera lens placement hole of casing front end;
One view finder is arranged in the described casing, and is relative with described camera lens; The rear end of this view finder is relative with the view aperture of described casing rear end, or is embedded in the view aperture of described casing rear end;
One linear array sensing element, adjacent with described scenic focal point frosted glass one side, and relative with described camera lens;
The online cable of one USB is electrically connected with the output terminal of described linear array sensing element.
2. the contactless impact displacement line of high speed according to claim 1 array sensor is characterized in that described support takes the shape of the letter U, and its two side roof part and casing both sides flexibly connect.
3. the contactless impact displacement line of high speed according to claim 1 and 2 array sensor is characterized in that, the height of described support is fixing, or is Height Adjustable.
4. the contactless impact displacement line of high speed according to claim 1 array sensor is characterized in that, also comprises pitching scenic focal point adjusting fixed mechanism, and described pitching scenic focal point is regulated fixed mechanism and comprised first and second clamping screws that are arranged on the support both sides; Described support two side roof parts are provided with connecting hole, the position of the connecting hole that corresponding support both sides, described casing both sides are provided with respectively is provided with a bolt hole, described first and second clamping screws pass respectively support separately the connecting hole and the described bolt hole of the casing of a side separately of a side screw togather, regulate pitching scenic focal point angle and fixing.
5. the contactless impact displacement line of high speed according to claim 1 array sensor, it is characterized in that, also comprise a left and right sides scenic focal point adjusting fixed mechanism, constitute by one the 3rd clamping screw, described frame bottom is provided with fixed orifice, described the 3rd clamping screw passes the fixed orifice of described frame bottom, and described support is connected with fixture, regulates left and right sides scenic focal point angle and fixing.
6. the contactless impact displacement line of high speed according to claim 1 array sensor is characterized in that a side of described linear array sensing element and view finder is close to; Or be provided with the gap with a side of view finder; Described linear array sensing element is all relative with described camera lens with the combination of view finder.
7. according to claim 1 or the contactless impact displacement line of 6 described high speeds array sensor, it is characterized in that described view finder is an optical finder, comprise scenic focal point frosted glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206318706U CN201885689U (en) | 2010-11-30 | 2010-11-30 | High speed non-contact sensor for impact displacement linear array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206318706U CN201885689U (en) | 2010-11-30 | 2010-11-30 | High speed non-contact sensor for impact displacement linear array |
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| CN201885689U true CN201885689U (en) | 2011-06-29 |
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| CN2010206318706U Expired - Lifetime CN201885689U (en) | 2010-11-30 | 2010-11-30 | High speed non-contact sensor for impact displacement linear array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131842A (en) * | 2017-06-27 | 2017-09-05 | 南京理工大学 | A kind of noncontact whole audience strain measurement method under water |
| CN110441168A (en) * | 2019-07-24 | 2019-11-12 | 重庆交通大学 | A kind of control formula part axial deformation device |
-
2010
- 2010-11-30 CN CN2010206318706U patent/CN201885689U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131842A (en) * | 2017-06-27 | 2017-09-05 | 南京理工大学 | A kind of noncontact whole audience strain measurement method under water |
| CN110441168A (en) * | 2019-07-24 | 2019-11-12 | 重庆交通大学 | A kind of control formula part axial deformation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151112 Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Building 1 room 629 Patentee after: Shanghai shine Heavy Industry Co., Ltd. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: The 711th Research Institute of China Shipbuilding Industrial Corporation(CSIC) |
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| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
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| CX01 | Expiry of patent term |