CN103267726A - Agriculture material adhesion measuring device - Google Patents
Agriculture material adhesion measuring device Download PDFInfo
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- CN103267726A CN103267726A CN2013101810355A CN201310181035A CN103267726A CN 103267726 A CN103267726 A CN 103267726A CN 2013101810355 A CN2013101810355 A CN 2013101810355A CN 201310181035 A CN201310181035 A CN 201310181035A CN 103267726 A CN103267726 A CN 103267726A
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Abstract
The invention discloses an agriculture material adhesion measuring device which is mainly applied to the field of wet adhesion agriculture material adhesion characteristic tests, and solves the problem that a common adhesion test device is not suitable for the agriculture material adhesion characteristic test, the environment of the existing test device is open, and the human intervention is generated. The adhesion measuring device comprises a loading time-keeping system, an image collecting system and a computer, wherein the computer controls a moving cantilever which is perpendicular to guide rails based on the adhesion characteristic test device, an adhesion interface is subjected to time keeping under compression, after loading, an image collecting platform is rotated through a motor so as to enable an adhesion plate to be completely coincided with a carrier window arranged in the top of a light box, an adhesion image is collected in a seal light environment, and finally, an adhesion ratio index is obtained through computer process. The agriculture material adhesion measuring device provided by the invention can provide new equipment for the test of the agriculture material adhesion characteristic test, and the problem that the common adhesion test device is not suitable for agriculture material adhesion characteristic test is solved.
Description
Technical field
The present invention relates to the agricultural equipment field, especially a kind of agricultural material adheres to measurement mechanism.
Background technology
The correlative study of agricultural engineering usually can relate to wet sticking agricultural material, especially can relate to the adhesion characteristics research of wet sticking agricultural material.As harvest machinery when results super hybridization rice and the rape, sorting screen is when carrying out continuous screening operation to wet sticking super hybridization rice emersion object and rape emersion object, wet sticking emersion object can stick to sorting screen surface gradually and further stop up sieve aperture, finally makes compass screen surface forfeiture sieving capacity.For solving this difficult problem, the researcher needs the at first adhesion characteristics of the wet sticking emersion object of research, and the quantification that obtains wet sticking emersion object adheres to index, just can launch follow-up visbreaking then and fall resistance research.
In the agricultural engineering field, the test that traditional adhesion characteristics method of testing is based on " adhesion " launches, and the object of testing is all kinds of soil substantially.For example, the adhesion characteristics test between traditional soil and the metal parts is direct test parameter with the maximum desorption power of interface normal direction, and it is defined as " adhesion ", in order to weigh the adhesion characteristics between the interface.Corresponding adhesion characteristics proving installation then comprises in early days by the soil adhesion force detector of the general utility balance transformation of the way, " hydraulic pressure electric measuring type soil adhesion force detector " (agricultural mechanical journal of the just medium exploitation of Jiangsu Polytechnical College mulberry, the 4th phase in 1984,99~100 pages), Jilin Industry University appoints " tester for soil viscosity force " (application number: CN1020167C, patent No.: 89108689) etc. of revealing exploitations such as spring.
More weak with the adhesion between the associated metal parts so that be difficult to distinguish its different adhesion characteristics at wet sticking agricultural material, the bright grade of the Li Yao of Jiangsu University has been invented a kind of sticking agricultural material that wets that can directly reflect and has been formed the proving installation (application publication number: CN 102494996 A) of residue adhesion thing complexity at the related work parts, the test philosophy of this proving installation is: use the area of wet adhesive material residue adhesion thing on the related work parts as the direct measurement index that characterizes the wet adhesive material adhesion characteristics, and based on the residue adhesion area, defined adhesion rate
* 100%(r is the residue adhesion area,
For adhering to contact area), use adhesion rate
The degree that characterize to adhere to of size.On concrete enforcement means, this is invented described adhesion proving installation and is based on that general universal testing machine, CCD and computer reform form, though can realize measuring based on the adhesion characteristics of above-mentioned principle, but remain in following some weak point: though 1, have in the image acquisition extraneous pressure light source that illumination is provided, but the light environment that relies on still is open, thereby the shading value of collection image still is subjected to the influence of external environment; 2, before gathering the adhesion sheet image, need by hand adhesion sheet to be taken off, overturns and be placed on the inclination objective table from the universal testing machine anchor clamps, increased the human intervention to test findings like this, can not guarantee the accurate of test result; 3, proving installation is built by interim transformation of other common apparatus, makes the repeatable not enough of the stability of device and test findings.Therefore, be necessary to develop new adhesion proving installation.
Summary of the invention
The objective of the invention is to overcome the existing existing above-mentioned weak point of adhesion characteristics measurement mechanism (application publication number: CN 102494996 A), a kind of new agricultural material adhesion characteristics proving installation is provided, and especially a kind of agricultural material with sealing light environment and the artificial intervention of nothing adheres to proving installation.
For achieving the above object, the technical solution used in the present invention is as follows:
Agricultural material of the present invention adheres to measurement mechanism, and system, image capturing system and computing machine 1 are formed when being protected by loading:
System comprised material container 4 when described loading was protected, taper adheres to 7, pull pressure sensor 8, pressure display controller 9, mobile cantilever 10, column 11, vertical guide rail 18, upper limit block 15, lower limit block 14, leading screw 26, servomotor 16 and servomotor scrambler 17, wherein vertical guide rail 18 axially is installed in column 11 surfaces along column 11, column 11 is vertically mounted on the base 12, leading screw 26 is installed in column 11 center of inside, upper limit block 15 and lower limit block 14 are installed in the two ends of vertical guide rail 18 respectively, mobile cantilever 10 1 ends are installed on the vertical guide rail 18 and with leading screw 26 and link to each other, the fixedly connected pressure display controller 9 of the other end, mobile cantilever 10 also can move axially along leading screw 26 between upper limit block 15 and lower limit block 14, pull pressure sensor 8 is installed in the below center position of pressure display controller 9, taper adheres to 7 belows that are installed in pull pressure sensor 8, servomotor 16 is positioned at column 11 tops and links to each other with leading screw 26, servomotor scrambler 17 is installed in the top centre of servomotor 16, described servomotor 16 can drive mobile cantilever 10 by leading screw 26 and move, material container 4 be placed on the base 12 and be positioned at taper adhere to 7 under;
Described image capturing system is by stepper motor 3, image acquisition platform 2, light box 19, CCD24, tight shot 22, light source bracket 23, conical surface annular light source 20, loading window 21, balancing weight 25 is formed, wherein stepper motor 3 is fixed on the base 12, image acquisition platform 2 levels are installed in the rotating shaft of stepper motor 3, balancing weight 25, light box 19 is installed in the two ends of image acquisition platform 2 respectively, light box 19 is made by lighttight sheet material, the cross section of light box 19 is square, CCD24 is installed in light box 19 inner bottom part middle positions, tight shot 22 links to each other with CCD24, light source bracket 23 is installed in around the CCD24, conical surface annular light source 20 is installed in light source bracket 23 tops, the external diameter of conical surface annular light source equates with the foursquare length of side in light box 19 cross sections, light box 19 center of top are provided with loading window 21, loading window 21 is rectangle, tight shot 22, CCD24 and loading window 21 coaxial arrangement (the b axle shown in Fig. 1);
Comprise image analysis processing software in the described computing machine 1, computing machine 1 links to each other respectively at CCD24, stepper motor 3, servomotor 16 and servomotor scrambler 17 by data line.
Above-described pull pressure sensor 8 ranges are 0~500N, the pixel of CCD24 is not less than 3,000,000, the colour temperature of conical surface annular light source 20 is not less than 5000K, be not more than 6000K, the light that conical surface annular light source 20 sends does not have hot spot and occurs when being radiated at the end face of light box 19, the setting height(from bottom) of tight shot 22 is lower than the maximum height of conical surface annular light source 20, the equivalent focal length of tight shot 22 is between 24mm ~ 35mm, and the upper end of tight shot 22 is not less than 80mm from the vertical range of loading window 21, be not more than 130mm, described stepper motor 3 can drive the rotation of image acquisition platform 2 along continuous straight runs, make tight shot 22 to adhere to 7 over against taper, be image acquisition platform 2 by position shown in Figure 1 Rotate 180 ° to the position shown in Fig. 2, making central axis b and the taper of light box 19 adhere to a central axis B of 7 overlaps fully, lower limit block 14 is not less than 200mm from the height of base, upper limit block 15 is not less than 50mm from the distance of column 11 upper ends, and the height of material container 4 is no more than the vertical range between image acquisition platform 2 bottom surfaces and the base 12.
Also be described below adhering to testing procedure by reference to the accompanying drawings based on said apparatus of the present invention:
Computing machine 1 is the control that realizes servomotor 16 by servomotor scrambler 17 among the present invention, the same prior art of control mode, computing machine 1 control servomotor 16 drives mobile cantilever 10 by leading screw 26 and promotes, adhesion sheet 6 and taper are adhered to 7 to be rigidly connected, after treating system stability, the indicating value of regulating pressure display controller 9 is zero; Wet adhesive material to be measured is packed in the material container 4, lie in a horizontal plane in material container 4 on the base 12 and be positioned at adhesion sheet 6 under; Control by 1 pair of servomotor 16 of computing machine, according to the experiment demand determine mobile cantilever 10 the speed that moves down, trigger cantilever 10 and move down the return speed of the adhesion interfacial pressure value that stops, dwell time, mobile cantilever 10 and return shutheight (wherein require mobile cantilever 10 to return stop then making adhesion sheet 6 be higher than the height of light box 19), and adhere to the interface and load test when protecting; Mobile cantilever 10 return stop after, start working by computing machine 1 control step motor 3, ° (the image acquisition platform goes to position shown in Figure 2 by position shown in Figure 1 around axis (the A axle shown in Fig. 1) Rotate 180 of stepper motor 3 to make image acquisition platform 2, namely go to the B shaft position by the b shaft position shown in Fig. 1), computing machine 1 control servomotor 16 drives mobile cantilever 10 and is displaced downwardly to when adhesion sheet 6 overlaps fully with loading window 21 and stops; Open conical surface annular light source 20 and regulate, make colour temperature between 5000K ~ 6000K, the material by adhesion sheet 6 on the CCD control software collection loading window 21 adheres to coloured image and transfers to Computer Storage; Use the image analysis software in the computing machine 1 that the image of gathering is carried out feature extraction, binary conversion treatment, obtain with the residue adhesion thing is the bianry image of feature, and the number of pixels of calculated characteristics, with the number of pixels of characteristic image divided by real area obtain coefficient of relationship and and then calculate the real area of residue adhesion thing, the real area of residue adhesion thing is obtained adhesion rate divided by the real area of adhesion sheet
, the same prior art of method that computing machine adopts image analysis software that image is handled does not repeat them here.
Light intensity with conical surface annular light source 20 in a collection of adherence test remains unchanged.
Beneficial effect of the present invention: (1) the present invention has improved image capturing system, make image capturing system in the light environment of sealing, to gather adhering to image, got rid of the variation of external environment to gathering the influence of image, measurement data is more accurate, improves reliability, repeatability and the antijamming capability of system; (2) use in the process of adhesion proving installation of the present invention, with respect to prior art, the movement of adhesion sheet is not had human intervention, avoided artificial test error, improved the confidence level of test figure.
Description of drawings
Fig. 1 is that device of the present invention is in the synoptic diagram that loads state when protecting in adhering to test.
Fig. 2 is device of the present invention is in the image acquisition state in adhering to test synoptic diagram.
Fig. 3 is the sectional view of image acquisition platform 2.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below be that example is described in further details the present invention with the test of the adhesion characteristics between rape emersion object and the common sieve plate.
The first step: by the control software in the computing machine 1 with mobile cantilever 10 be promoted to vertical guide rail in go up height and position, adhesion sheet 6 and taper are adhered to 7 are rigidly connected the power value zero clearing of 9 pairs of pull pressure sensor 8 of control pressure display controller;
Second step: the rape emersion object is packed in the material container 4, lie in a horizontal plane in material container 4 on the base 12 and be positioned at adhesion sheet 6 under;
The 3rd step: in computing machine 1, the control software of servomotor 16 is carried out the relevant setting of servomotor closed-loop control, the speed of moving down that mobile cantilever 10 is set is 0.05mm/s, trigger cantilever 10 move down the adhesion interfacial pressure value that stops be the return speed of 200N, dwell time 60s, mobile cantilever 10 be 5mm/s and to return shutheight be that 600mm(returns mobile cantilever 10 to stop the height that back adhesion sheet 6 is higher than light box 19), set to begin to carry out after finishing and adhere to the interface and load test when protecting;
The 4th the step: mobile cantilever 10 return stop the 600mm height after, start working by the step motor control software control stepper motor 3 in the computing machine 1, make image acquisition platform 2 around the axis A of stepper motor 3 Rotate 180 ° (going to Fig. 2 position by Fig. 1 position), then by the control of the servomotor in the computing machine 1 software control servomotor 16, mobile cantilever 10 is moved down, when adhesion sheet 6 overlaps fully with loading window 21, stop to move down;
The 5th step: open conical surface annular light source 20 and regulate, making light source color temperature is 5500K, and the material by adhesion sheet 6 on the control of the CCD in the computing machine 1 software collection loading window 21 adheres to coloured image and storage;
The 6th step: use the image analysis software in the computing machine 1 that the image of gathering is carried out feature extraction, binary conversion treatment, obtain with the residue adhesion thing is the bianry image of feature, and the number of pixels of calculated characteristics, with the number of pixels of characteristic image divided by real area obtain coefficient of relationship and and then the real area that calculates the residue adhesion thing be 421.6516mm
2, the real area of residue adhesion thing is obtained adhesion rate divided by the real area of adhesion sheet
Be 9.37%.
Claims (8)
1. an agricultural material adheres to measurement mechanism, it is characterized in that, system, image capturing system and computing machine (1) are formed when being protected by loading:
System comprised material container (4) when described loading was protected, taper adheres to head (7), pull pressure sensor (8), pressure display controller (9), mobile cantilever (10), column (11), vertical guide rail (18), upper limit block (15), lower limit block (14), leading screw (26), servomotor (16) and servomotor scrambler (17), wherein vertical guide rail (18) axially is installed in column (11) surface along column (11), column (11) is vertically mounted on the base (12), leading screw (26) is installed in column (11) center of inside, upper limit block (15) and lower limit block (14) are installed in the two ends of vertical guide rail (18) respectively, mobile cantilever (10) one ends are installed in vertical guide rail (18) and upward and with leading screw (26) link to each other, the fixedly connected pressure display controller of the other end (9), mobile cantilever (10) is positioned between upper limit block (15) and the lower limit block (14) and can moves axially along leading screw (26), pull pressure sensor (8) is installed in the below center position of pressure display controller (9), taper adheres to the below that head (7) is installed in pull pressure sensor (8), servomotor (16) is positioned at column (11) top and links to each other with leading screw (26), servomotor scrambler (17) is installed in the top centre of servomotor (16), it is mobile that described servomotor (16) can drive mobile cantilever (10) by leading screw (26), material container (4) be placed on base (12) go up and be positioned at taper adhere to head (7) under;
Described image capturing system is by stepper motor (3), image acquisition platform (2), light box (19), CCD(24), tight shot (22), light source bracket (23), conical surface annular light source (20), loading window (21), balancing weight (25) is formed, wherein stepper motor (3) is fixed on the base (12), image acquisition platform (2) level is installed in the rotating shaft of stepper motor (3), balancing weight (25), light box (19) is installed in the two ends of image acquisition platform (2) respectively, light box (19) is made by lighttight sheet material, the cross section of light box (19) is square, CCD(24) be installed in light box (19) inner bottom part middle position, tight shot (22) and CCD(24) link to each other, light source bracket (23) is installed in CCD(24) on every side, conical surface annular light source (20) is installed in light source bracket (23) top, the external diameter of conical surface annular light source equates with the foursquare length of side in light box (19) cross section, light box (19) center of top is provided with loading window (21), loading window (21) is rectangle, tight shot (22), CCD(24) and loading window (21) coaxial arrangement;
Described computing machine comprises image analysis processing software etc. in (1), computing machine (1) by data line respectively at CCD(24), stepper motor (3), servomotor (16) link to each other with servomotor scrambler (17).
2. a kind of agricultural material according to claim 1 adheres to measurement mechanism, and it is characterized in that: pull pressure sensor (8) range is 0~500N.
3. a kind of agricultural material according to claim 1 adheres to measurement mechanism, and it is characterized in that: pixel CCD(24) is not less than 3,000,000.
4. a kind of agricultural material according to claim 1 adheres to measurement mechanism, it is characterized in that: the colour temperature of conical surface annular light source (20) is not less than 5000K, is not more than 6000K, and the light that conical surface annular light source (20) sends does not have hot spot and occurs when being radiated at the end face of light box (19).
5. a kind of agricultural material according to claim 1 adheres to measurement mechanism, it is characterized in that: the setting height(from bottom) of tight shot (22) is lower than the maximum height of conical surface annular light source (20), the equivalent focal length of tight shot (22) is between 24mm ~ 35mm, and the upper end of tight shot (22) is not less than 80mm, is not more than 130mm from the vertical range of loading window (21).
6. a kind of agricultural material according to claim 1 adheres to measurement mechanism, it is characterized in that: described stepper motor (3) can drive the rotation of image acquisition platform (2) along continuous straight runs, makes tight shot (22) to adhere to head (7) over against taper.
7. a kind of agricultural material according to claim 1 adheres to measurement mechanism, and it is characterized in that: lower limit block (14) is not less than 200mm from the height of base, and upper limit block (15) is not less than 50mm from the distance of column (11) upper end.
8. a kind of agricultural material according to claim 1 adheres to measurement mechanism, and it is characterized in that: the height of material container (4) is no more than the vertical range between image acquisition platform (2) bottom surface and the base (12).
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Cited By (1)
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