阅读说明：本技术 水稻穗长测量装置及测量方法 (Rice spike length measuring device and measuring method ) 是由 齐龙 黄旭楠 陶明 邓若玲 刘闯 龚浩 袁梓浩 江茜 唐震宇 刘金炜 林敬川 于 2020-07-14 设计创作，主要内容包括：本发明公开了一种水稻穗长测量装置及测量方法,所述装置包括底座、输送机构、支承板、摄像机安装支架、摄像机、收束管和计算机；所述输送机构设置在底座上；所述支承板设置在底座上,并位于输送机构的上方,支承板在自身纵轴线处开有长方形通孔；所述收束管设置在支承板的纵轴线正下方,并位于输送机构的正上方；所述摄像机安装支架设置在支承板的正上方；所述摄像机可移动地设置在摄像机安装支架上,并与计算机连接,摄像机的镜头正对着支承板的长方形通孔中心。本发明通过输送机构将稻穗送入测量装置和送出测量装置,能够将弯曲散乱的稻穗无损地收束变直,降低稻穗形态对利用图像处理方法来测量穗长的准确度的影响。(The invention discloses a device and a method for measuring the ear length of rice, wherein the device comprises a base, a conveying mechanism, a supporting plate, a camera mounting bracket, a camera, a bundling pipe and a computer; the conveying mechanism is arranged on the base; the supporting plate is arranged on the base and is positioned above the conveying mechanism, and a rectangular through hole is formed in the longitudinal axis of the supporting plate; the bundling pipe is arranged right below the longitudinal axis of the supporting plate and is positioned right above the conveying mechanism; the camera mounting bracket is arranged right above the supporting plate; the camera is movably arranged on the camera mounting bracket and is connected with the computer, and the lens of the camera is opposite to the center of the rectangular through hole of the supporting plate. The invention can send the rice ears into the measuring device and send the rice ears out of the measuring device through the conveying mechanism, can bundle and straighten the rice ears which are scattered in bending without damage, and reduces the influence of the rice ear shapes on the accuracy of measuring the ear length by using an image processing method.)

1. A rice spike length measuring device is characterized by comprising a base, a conveying mechanism, a supporting plate, a camera mounting bracket, a camera, a binding pipe and a computer;

the conveying mechanism is arranged on the base;

the supporting plate is arranged on the base and is positioned above the conveying mechanism, and a rectangular through hole is formed in the longitudinal axis of the supporting plate;

the bundling pipe is arranged right below the longitudinal axis of the supporting plate and is positioned right above the conveying mechanism;

the camera mounting bracket is arranged right above the supporting plate;

the camera is movably arranged on the camera mounting bracket and is connected with the computer, and the lens of the camera is opposite to the center of the rectangular through hole of the supporting plate.

2. The rice ear length measuring device according to claim 1, further comprising a light source mechanism and a light blocking mechanism;

the light source mechanism is rotatably arranged below the supporting plate and positioned at two sides of the beam-converging tube, and the longitudinal axis of the light source mechanism is parallel to that of the beam-converging tube;

the light blocking mechanism is rotatably arranged below the supporting plate and is positioned between the beam converging tube and the light source mechanism, and the longitudinal axis of the light blocking mechanism is parallel to that of the beam converging tube.

3. The rice ear length measuring device according to claim 2, wherein the light source mechanism comprises a bar-shaped lamp, a slide support, a lamp shade tube support and a lamp shade tube knob;

rectangular grooves are formed in two side faces of the outer surface of the strip-shaped lamp, so that the sliding support base can slide along the rectangular grooves;

the sliding support base is fixedly connected with the lamp shade tube;

the lampshade tube is in clearance fit with the lampshade tube supporting seat, so that the lampshade tube can rotate under the action of external force;

the tube wall of the lamp shade tube is provided with a row of circular through holes, and the circular through holes are right opposite to the light emitting surface of the strip-shaped lamp;

the lamp shade tube supporting seats are arranged in front and at back and are fixedly connected with the supporting plate, and the clamp springs are arranged at the two lamp shade tube supporting seats to prevent the lamp shade tubes from longitudinally moving;

the lamp shade tube knob is fixedly connected with the lamp shade tube.

4. The rice ear length measuring device according to claim 2, wherein the light blocking mechanism comprises a light blocking rod, a semi-cylindrical block, a light blocking rod support seat and a light blocking rod knob;

the light blocking rod is a straight rod with a semicircular cross section;

the semi-cylindrical block is fixedly connected with the light blocking rod;

the cylindrical part formed by connecting the light blocking rod and the semi-cylindrical block is in clearance fit with the light blocking rod supporting seat, so that the light blocking rod can rotate under the action of external force;

the light blocking rod supporting seats are arranged in front of and behind and are fixedly connected with the supporting plate, and clamp springs are arranged at the two light blocking rod supporting seats to prevent the light blocking rods from longitudinally moving;

the light blocking rod knob is fixedly connected with the light blocking rod and the semi-cylindrical block.

5. The rice ear length measuring device according to any one of claims 1 to 4, wherein the conveying mechanism comprises a three-stage ball slide rail member, a slide plate, a light shielding member, a pulling member and an ear placement member;

the three-section type ball sliding rail component comprises an outer sliding rail, a middle sliding rail and an inner sliding rail which are sequentially connected in a sliding manner, the outer sliding rail is fixedly connected with the base, and the inner sliding rail is fixedly connected with the sliding plate;

the light shielding part is positioned at the front end of the sliding plate, the pulling part is arranged on the light shielding part, and the light shielding part and the pulling part are tightly connected with the sliding plate; the shading part comprises an upper shading strip, a lower shading strip and a shading block, and the shading block is positioned at the front end of the rice ear placing part and is fixedly connected with the upper shading strip;

the rice ear placing part is fixed above the sliding plate; the rice ear placing component comprises a rice ear placing plate, side barrier strips, a stem guide tube and an ear neck section fixing piece, the ear neck section fixing piece comprises a button fixing base, a button sliding piece and a spring, and the button fixing base and the button sliding piece are provided with matched through holes; the two side barrier strips are arranged on two sides above the rice ear placing plate and are fixedly connected with the rice ear placing plate; the rice ear placing plate is provided with a semi-cylindrical straight groove and a rectangular blind hole on a longitudinal axis of the rice ear placing plate, the stem guide tube is arranged at the semi-cylindrical straight groove and is fixedly connected with the rice ear placing plate, the button fixing base is arranged at the rectangular blind hole, the button fixing base and the rectangular blind hole are in interference fit, and the spring is arranged in the button fixing base and is connected with the button sliding piece.

6. A rice spike length measuring method, characterized in that the method comprises:

acquiring and storing a first image without rice ears;

conveying the rice ears into a measuring device by using a conveying mechanism, and simultaneously binding and straightening the rice ears by using a binding pipe;

acquiring a second image containing the rice ears, and segmenting the rice ears in the second image;

continuously processing the second image of the divided rice ear part to obtain the length of the minimum circumscribed regular rectangle corresponding to the expanded rice ear outline in the direction of the transverse axis of the image by taking the number of pixels as a unit;

the ear length is calculated according to the length of the expansion core in the direction of the horizontal axis of the image by taking the number of pixels, the length of the minimum circumscribed regular rectangle corresponding to the outline of the rice ear after expansion in the direction of the horizontal axis of the image by taking the number of pixels, and a pre-measured direct proportion coefficient between the number of pixels and the real size.

7. The method of claim 6, wherein before the obtaining and storing the first image without ears of rice, further comprising:

eliminating circular spot on the tube wall of the beam collecting tube by using a light blocking mechanism;

utilize mechanism in being shaded to eliminate the dot facula that is located on the beam tube pipe wall, specifically include:

starting a strip lamp in the light source mechanism;

observing a real-time picture obtained by shooting by a camera and rotating two lamp shade tube knobs of a light source mechanism until light passes through round holes of the lamp shade tubes and is directly projected to the tube walls of the beam tubes to obtain the brightest picture;

and observing the current brightest real-time picture and rotating two light blocking rod knobs of the light blocking mechanism until two rows of round dot light spots formed by the light irradiating the tube wall of the beam converging tube are just shielded and eliminated by the light blocking rods.

8. The method for measuring the length of the rice ear according to claim 6, wherein the feeding of the rice ear into the measuring device by the conveying mechanism and the binding of the rice ear by the binding pipe are straightened, and the method comprises the following steps:

pulling out a sliding plate of the conveying mechanism from the measuring device to a maximum stroke position by using a pulling part, and pressing down a button sliding part of a spike neck section fixing piece on a rice spike placing plate;

rice ears are placed on the rice ear placing plate, the tail ends of the stalks penetrate through the button sliding parts and the through holes of the button fixing base to enter the stalk guide tubes, and the button sliding parts are loosened when the ear neck joints move to the button sliding parts, so that the ear neck joints are pressed tightly by the button sliding parts through the action force of the springs;

the sliding plate of the conveying mechanism is pushed into the measuring device, so that the rice ears are bundled and straightened under the guiding action of the bundling tube.

9. The method for measuring rice ear length according to any one of claims 6 to 8, wherein the processing of the second image from which the rice ear portion has been divided is continued to obtain the length of the minimum circumscribed rectangle corresponding to the expanded rice ear contour in the direction of the horizontal axis of the image in units of the number of pixels, and specifically comprises:

performing expansion processing on the second image of the divided rice ear part in a direction parallel to the transverse axis of the image, so that the rice ear area is not completely broken into two or more sub-areas at a certain position in the middle;

finding out all contours in the image and solving the areas of all the contours;

sequencing the areas of all the contours in size to obtain the contour with the largest area, wherein the contour is the expanded rice ear contour;

the minimum circumscribed rectangle corresponding to the expanded ear contour and the length of the minimum circumscribed rectangle in the direction of the horizontal axis of the image in units of the number of pixels are obtained.

10. A rice ear length measuring method according to any one of claims 6 to 8, wherein the ear length is calculated from a length of the swollen core in the direction of the horizontal axis of the image in terms of the number of pixels, a length of the minimum circumscribed regular rectangle corresponding to the contour of the swollen ear in the direction of the horizontal axis of the image in terms of the number of pixels, and a positive proportionality coefficient between the number of pixels and the true size measured in advance, as follows:

L＝K×(H-W)

wherein, L is the ear length, K is a direct proportionality coefficient between the number of pixels and the real size measured in advance, H is the length of the minimum circumscribed rectangle corresponding to the outline of the expanded rice ear in the horizontal axis direction of the image in units of the number of pixels, and W is the length of the expansion kernel in the horizontal axis direction of the image in units of the number of pixels.

Technical Field

The invention relates to a device and a method for measuring the ear length of rice, and belongs to the field of machine vision.

Background

Rice is an important grain crop in China, and the improvement of the rice yield is an important target of rice breeding. The rice ear length is closely related to the rice yield, and determines the maximum number of growing grains per ear, and is an important rice phenotypic parameter. The ear length is the distance from the neck node of the ear to the top of the ear along the longest main ear, and the accurate measurement of the ear length can provide scientific basis for screening high-yield and high-quality new rice varieties.

Currently, the following three methods are mainly used for measuring the rice spike length:

1) a manual measurement method. The traditional measurement method of the rice ear length is that an operator straightens the rice ear by hand and then measures the distance from the neck node of the ear to the top of the ear by using a ruler. This method has the following disadvantages: firstly, a great deal of time and labor are consumed; secondly, when the rice ears are straightened manually, grains near the tops of the rice ears easily fall off and small ears are broken, so that the rice ears are damaged and the measurement accuracy of the ear length is influenced; thirdly, reading errors are easily introduced due to fatigue and negligence of operators.

2) The group of the Huheritage university test center of Shanghai agricultural academy 31066adopts a grating length measurement method to measure the ear length. The displacement grating and the photoelectric detection probe in the method adopt a logical AND mode, and length is synchronously measured after a real object is detected. This method has the following disadvantages: firstly, the ear length can be measured only by shearing the rice ear to be measured from the neck node of the ear; and secondly, the measurement accuracy can be ensured only by requiring the rice ears to be measured to be straight, so that the method is not suitable for the rice ears which are bent and scattered.

3) The luqing inscription team at Huazhong science and technology university adopts a dual-camera imaging method to measure the spike length. The method proposes a special image processing algorithm to identify the ear of rice and calculate the ear length. This method has the following disadvantages: firstly, because two cameras are adopted, the construction cost of an image acquisition system is increased, and the system error of image registration error is introduced; secondly, the main path of the rice ear extracted by the image processing algorithm in the method can not reflect the real trend of the main rice ear of the rice ear because of the framework extraction and the resampling treatment, and the measurement accuracy is easily influenced by the bending degree of the rice ear and the shape and the position of each small ear of the rice ear; thirdly, the method is lack of a rice ear conveying mechanism to convey the rice ears into the measuring system and out of the measuring system, the operator needs to hold the rice ears by hands, the handle extends into the closed darkroom, the rice ears are placed at a proper position, the camera shoots a correct image, and after the measurement is finished, the operator needs to stretch the hands again to enter the closed darkroom to grope the rice ears and then take out the rice ears, so that the method has high requirements on the professional degree and the proficiency of the operator, and is not convenient for popularization and use in practice.

Disclosure of Invention

In view of the above, the present invention provides a rice ear length measuring apparatus and a measuring method, which can send the rice ears into the measuring apparatus and send the rice ears out of the measuring apparatus by a conveying mechanism, can bundle and straighten the rice ears which are scattered and bent without damage, and can reduce the influence of the rice ear shape on the accuracy of measuring the ear length by an image processing method.

The first purpose of the invention is to provide a rice ear length measuring device.

The second purpose of the invention is to provide a rice spike length measuring method.

The first purpose of the invention can be achieved by adopting the following technical scheme:

a rice spike length measuring device comprises a base, a conveying mechanism, a supporting plate, a camera mounting bracket, a camera, a binding pipe and a computer;

the conveying mechanism is arranged on the base;

the supporting plate is arranged on the base and is positioned above the conveying mechanism, and a rectangular through hole is formed in the longitudinal axis of the supporting plate;

the bundling pipe is arranged right below the longitudinal axis of the supporting plate and is positioned right above the conveying mechanism;

the camera mounting bracket is arranged right above the supporting plate;

the camera is movably arranged on the camera mounting bracket and is connected with the computer, and the lens of the camera is opposite to the center of the rectangular through hole of the supporting plate.

Further, the device also comprises a light source mechanism and a light blocking mechanism;

the light source mechanism is rotatably arranged below the supporting plate and positioned at two sides of the beam-converging tube, and the longitudinal axis of the light source mechanism is parallel to that of the beam-converging tube;

the light blocking mechanism is rotatably arranged below the supporting plate and is positioned between the beam converging tube and the light source mechanism, and the longitudinal axis of the light blocking mechanism is parallel to that of the beam converging tube.

Further, the light source mechanism comprises a bar-shaped lamp, a sliding supporting seat, a lampshade tube supporting seat and a lampshade tube knob;

rectangular grooves are formed in two side faces of the outer surface of the strip-shaped lamp, so that the sliding support base can slide along the rectangular grooves;

the sliding support base is fixedly connected with the lamp shade tube;

the lampshade tube is in clearance fit with the lampshade tube supporting seat, so that the lampshade tube can rotate under the action of external force;

the tube wall of the lamp shade tube is provided with a row of circular through holes, and the circular through holes are right opposite to the light emitting surface of the strip-shaped lamp;

the lamp shade tube supporting seats are arranged in front and at back and are fixedly connected with the supporting plate, and the clamp springs are arranged at the two lamp shade tube supporting seats to prevent the lamp shade tubes from longitudinally moving;

the lamp shade tube knob is fixedly connected with the lamp shade tube.

Further, the light blocking mechanism comprises a light blocking rod, a semi-cylindrical block, a light blocking rod supporting seat and a light blocking rod knob;

the light blocking rod is a straight rod with a semicircular cross section;

the semi-cylindrical block is fixedly connected with the light blocking rod;

the cylindrical part formed by connecting the light blocking rod and the semi-cylindrical block is in clearance fit with the light blocking rod supporting seat, so that the light blocking rod can rotate under the action of external force;

the light blocking rod supporting seats are arranged in front of and behind and are fixedly connected with the supporting plate, and clamp springs are arranged at the two light blocking rod supporting seats to prevent the light blocking rods from longitudinally moving;

the light blocking rod knob is fixedly connected with the light blocking rod and the semi-cylindrical block.

Further, the device also comprises light shielding plates, wherein the light shielding plates comprise light shielding plates arranged on four sides of the support plate, light shielding plates arranged on four sides of the camera mounting bracket and light shielding plates arranged right above the camera mounting bracket.

Further, the base comprises anti-skid supporting legs, a base cross beam, a base longitudinal beam and a first supporting column;

the anti-skid supporting legs are fixedly connected with the base cross beam;

the base longitudinal beam is fixedly connected with the base cross beam through the first supporting column.

Furthermore, the supporting plate is provided with second supporting columns at the four corners respectively, and the supporting plate is fixedly connected with the base through the second supporting columns.

Furthermore, the beam-converging pipe is a straight pipe with a semicircular cross section, and the edge of the front port of the beam-converging pipe is rounded;

and two ends of the bundling pipe are respectively provided with a bundling pipe supporting seat, and the bundling pipe supporting seats are fixedly connected with two ends of the bundling pipe and are fixedly connected with the supporting plate.

Further, the conveying mechanism comprises a three-section type ball sliding rail component, a sliding plate, a shading component, a traction component and a rice ear placing component;

the three-section type ball sliding rail component comprises an outer sliding rail, a middle sliding rail and an inner sliding rail which are sequentially connected in a sliding manner, the outer sliding rail is fixedly connected with the base, and the inner sliding rail is fixedly connected with the sliding plate;

the light shielding part is positioned at the front end of the sliding plate, the pulling part is arranged on the light shielding part, and the light shielding part and the pulling part are tightly connected with the sliding plate; the shading part comprises an upper shading strip, a lower shading strip and a shading block, and the shading block is positioned at the front end of the rice ear placing part and is fixedly connected with the upper shading strip;

the rice ear placing part is fixed above the sliding plate; the rice ear placing component comprises a rice ear placing plate, side barrier strips, a stem guide tube and an ear neck section fixing piece, the ear neck section fixing piece comprises a button fixing base, a button sliding piece and a spring, and the button fixing base and the button sliding piece are provided with matched through holes; the two side barrier strips are arranged on two sides above the rice ear placing plate and are fixedly connected with the rice ear placing plate; the rice ear placing plate is provided with a semi-cylindrical straight groove and a rectangular blind hole on a longitudinal axis of the rice ear placing plate, the stem guide tube is arranged at the semi-cylindrical straight groove and is fixedly connected with the rice ear placing plate, the button fixing base is arranged at the rectangular blind hole, the button fixing base and the rectangular blind hole are in interference fit, and the spring is arranged in the button fixing base and is connected with the button sliding piece.

Further, the camera mounting bracket comprises a bracket cross rod, a bracket vertical rod, a camera vertical movement mechanism, a camera longitudinal movement mechanism and a camera transverse movement mechanism;

the upper ends of the two support vertical rods are respectively and fixedly connected with the two ends of the support cross rod, and the lower ends of the two support vertical rods are fixedly connected with the supporting plate;

the camera vertical motion mechanism, the camera longitudinal motion mechanism and the camera transverse motion mechanism are used for adjusting the position of the camera to a position where the lens is opposite to the center of the rectangular through hole of the supporting plate before measurement is started;

the number of the camera vertical movement mechanisms is two, the two camera vertical movement mechanisms correspond to the two support vertical rods one by one, and each camera vertical movement mechanism is arranged on the corresponding support vertical rod;

two ends of the camera longitudinal movement mechanism are respectively arranged on the two camera vertical movement mechanisms;

the camera transverse motion mechanism is arranged on the camera longitudinal motion mechanism;

the camera is arranged on the camera transverse movement mechanism.

The second purpose of the invention can be achieved by adopting the following technical scheme:

a rice spike length measurement method, the method comprising:

acquiring and storing a first image without rice ears;

conveying the rice ears into a measuring device by using a conveying mechanism, and simultaneously binding and straightening the rice ears by using a binding pipe;

acquiring a second image containing the rice ears, and segmenting the rice ears in the second image;

continuously processing the second image of the divided rice ear part to obtain the length of the minimum circumscribed regular rectangle corresponding to the expanded rice ear outline in the direction of the transverse axis of the image by taking the number of pixels as a unit;

the ear length is calculated according to the length of the expansion core in the direction of the horizontal axis of the image by taking the number of pixels, the length of the minimum circumscribed regular rectangle corresponding to the outline of the rice ear after expansion in the direction of the horizontal axis of the image by taking the number of pixels, and a pre-measured direct proportion coefficient between the number of pixels and the real size.

Further, before the acquiring and storing the first image without rice ears, the method further comprises:

eliminating circular spot on the tube wall of the beam collecting tube by using a light blocking mechanism;

utilize mechanism in being shaded to eliminate the dot facula that is located on the beam tube pipe wall, specifically include:

starting a strip lamp in the light source mechanism;

observing a real-time picture obtained by shooting by a camera and rotating two lamp shade tube knobs of a light source mechanism until light passes through round holes of the lamp shade tubes and is directly projected to the tube walls of the beam tubes to obtain the brightest picture;

and observing the current brightest real-time picture and rotating two light blocking rod knobs of the light blocking mechanism until two rows of round dot light spots formed by the light irradiating the tube wall of the beam converging tube are just shielded and eliminated by the light blocking rods.

Further, utilize conveying mechanism to send into measuring device with the ear of rice, utilize the binding pipe to bind the ear of rice and straighten simultaneously, specifically include:

pulling out a sliding plate of the conveying mechanism from the measuring device to a maximum stroke position by using a pulling part, and pressing down a button sliding part of a spike neck section fixing piece on a rice spike placing plate;

rice ears are placed on the rice ear placing plate, the tail ends of the stalks penetrate through the button sliding parts and the through holes of the button fixing base to enter the stalk guide tubes, and the button sliding parts are loosened when the ear neck joints move to the button sliding parts, so that the ear neck joints are pressed tightly by the button sliding parts through the action force of the springs;

the sliding plate of the conveying mechanism is pushed into the measuring device, so that the rice ears are bundled and straightened under the guiding action of the bundling tube.

Further, the processing of the second image of the divided ear part is continued to obtain the length of the minimum circumscribed rectangle corresponding to the expanded ear contour in the direction of the horizontal axis of the image by taking the number of pixels as a unit, and specifically includes:

performing expansion processing on the second image of the divided rice ear part in a direction parallel to the transverse axis of the image, so that the rice ear area is not completely broken into two or more sub-areas at a certain position in the middle;

finding out all contours in the image and solving the areas of all the contours;

sequencing the areas of all the contours in size to obtain the contour with the largest area, wherein the contour is the expanded rice ear contour;

the minimum circumscribed rectangle corresponding to the expanded ear contour and the length of the minimum circumscribed rectangle in the direction of the horizontal axis of the image in units of the number of pixels are obtained.

Further, the ear length is calculated based on the length of the swelling kernel in the direction of the horizontal axis of the image in terms of the number of pixels, the length of the minimum circumscribed rectangle corresponding to the outline of the rice ear after swelling in the direction of the horizontal axis of the image in terms of the number of pixels, and a positive proportionality coefficient between the number of pixels and the true size measured in advance, as follows:

L＝K×(H-W)

wherein, L is the ear length, K is a direct proportionality coefficient between the number of pixels and the real size measured in advance, H is the length of the minimum circumscribed rectangle corresponding to the outline of the expanded rice ear in the horizontal axis direction of the image in units of the number of pixels, and W is the length of the expansion kernel in the horizontal axis direction of the image in units of the number of pixels.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention is provided with the conveying mechanism and the bundling pipe, the rice ears which are bent and scattered can be sent into the measuring device through the conveying mechanism, meanwhile, under the action of the bundling pipe, the rice ears which are bent and scattered can be bundled and straightened without damage, the ear length can be accurately calculated by adopting a reliable and rapid image processing algorithm, the problems of grain falling and small ear disconnection caused by manually straightening the rice ears can be avoided, meanwhile, the reading error caused by fatigue and negligence during manual measurement can be avoided, and after the measurement is finished, the rice ears can be sent out of the measuring device through the conveying mechanism, so the use is very convenient.

2. The invention also provides a light source mechanism and a light blocking mechanism, wherein the light source mechanism is positioned at two sides of the beam collecting pipe, the longitudinal axis of the light source mechanism is parallel to the longitudinal axis of the beam collecting pipe, so that proper illumination can be provided for image acquisition, the light blocking mechanism is positioned between the beam collecting pipe and the light source mechanism, and the longitudinal axis of the light blocking mechanism is parallel to the longitudinal axis of the beam collecting pipe, so that light spots formed by light on the pipe wall of the beam collecting pipe can be eliminated, and the measurement precision of the rice ear length is improved.

3. The invention also provides the light shielding plates, wherein the light shielding plates comprise the light shielding plates arranged on four sides of the supporting plate, the light shielding plates arranged on four sides of the camera mounting bracket and the light shielding plates arranged right above the camera mounting bracket, so that the ambient light outside the measuring device can be prevented from entering the measuring device, and the measurement of the rice spike length is prevented from being influenced by the external ambient light.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an internal structure of a rice ear length measuring device according to an embodiment of the present invention.

Fig. 2 is a schematic view of the complete structure of the rice ear length measuring device according to the embodiment of the present invention.

Fig. 3 is a schematic view of a base structure according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a first support column according to an embodiment of the invention.

FIG. 5 is a schematic view of a support plate structure according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a second supporting pillar according to an embodiment of the invention.

FIG. 7 is a schematic view of the connection between the support plate and the base according to the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a conveying mechanism according to an embodiment of the present invention.

Fig. 9 is a schematic view of the connection between the conveying mechanism and the base according to the embodiment of the invention.

Fig. 10 is a schematic structural view of an ear placement member according to an embodiment of the present invention.

FIG. 11 is a schematic view of the connection between the ear placing member and the slide plate according to the embodiment of the present invention.

Fig. 12 is a schematic diagram of a structure of an ear of rice placing plate according to an embodiment of the present invention.

Fig. 13 is a schematic structural view of a neck ear fixing element according to an embodiment of the invention.

Fig. 14 is a schematic view of a stem guide tube structure according to an embodiment of the present invention.

Fig. 15 is a schematic view of a structure of a convergent tube according to an embodiment of the present invention.

FIG. 16 is a schematic structural diagram of a pinch tube support base according to an embodiment of the present invention.

Fig. 17 is a perspective view illustrating a connection between a bundling tube and a support plate according to an embodiment of the present invention.

FIG. 18 is a rear view of the connection of the cinch tube to the support plate in accordance with an embodiment of the present invention.

Fig. 19 is a schematic view of the connection of a camera mounting bracket to a support plate according to an embodiment of the present invention.

Fig. 20 is a schematic structural diagram of a first connection block according to an embodiment of the present invention.

Fig. 21 is a schematic diagram of a second connection block according to an embodiment of the invention.

Fig. 22 is a schematic diagram of a third connection block according to an embodiment of the invention.

Fig. 23 is a perspective view illustrating a connection between a light source mechanism and a support plate according to an embodiment of the present invention.

Fig. 24 is a rear view schematically illustrating the connection of the light source mechanism and the support plate according to the embodiment of the present invention.

Fig. 25 is a schematic structural view of a bar lamp and a slide bearing according to an embodiment of the invention.

Fig. 26 is a schematic structural view of a lamp cover tube according to an embodiment of the invention.

Fig. 27 is a schematic structural view of a lamp housing tube supporting base according to an embodiment of the present invention.

Fig. 28 is a perspective view illustrating the connection between the light blocking mechanism and the support plate according to the embodiment of the present invention.

Fig. 29 is a rear view schematically illustrating the coupling of the light blocking mechanism and the support plate according to the embodiment of the present invention.

Fig. 30 is a schematic structural view of a light barrier according to an embodiment of the present invention.

Fig. 31 is a schematic diagram of a semi-cylindrical block structure according to an embodiment of the invention.

Fig. 32 is a schematic structural view of a light blocking rod support seat according to an embodiment of the present invention.

Fig. 33 is a flowchart of a rice panicle length measuring method according to an embodiment of the present invention.

FIG. 34 is a flowchart illustrating an embodiment of eliminating a spot of a dot on a wall of a beam-closing tube by using a light-blocking mechanism.

FIG. 35 is a flow chart of the embodiment of the present invention, in which the ear of rice is conveyed to the measuring device by the conveying mechanism and the ear of rice is bundled and straightened by the bundling tube.

Fig. 36 is a flowchart for determining the length of the minimum circumscribed rectangle corresponding to the outline of the rice ear after expansion in the horizontal axis of the image in units of the number of pixels according to the embodiment of the present invention.

Wherein, 1-base, 101-antiskid supporting feet, 102-base beam, 103-base longitudinal beam, 104-first supporting column, 2-conveying mechanism, 201-three-section type ball slide rail component, 2011-outer slide rail, 2012-middle slide rail, 2013-inner slide rail, 202-slide plate, 203-shading component, 204-drawing component, 205-ear placing component, 2051-ear placing plate, 20511-semi-cylindrical straight groove, 20512-rectangular blind hole, 2052-side baffle strip, 2053-stem guide tube, 2054-ear neck fixing component, 20541-button fixing base, 20542-button sliding component, 20543-spring, 3-supporting plate, 301-rectangular through hole, 302-second supporting column, 4-camera mounting bracket, 401-support cross bar, 402-support vertical bar, 403-camera vertical motion mechanism, 4031-first connecting block, 404-camera longitudinal motion mechanism, 4041-second connecting block, 405-camera transverse motion mechanism, 4051-third connecting block, 5-camera, 6-beam tube, 601-beam tube supporting seat, 7-light source mechanism, 701-bar lamp, 702-sliding supporting seat, 703-lampshade tube, 7031-circular through hole, 704-lampshade tube supporting seat, 705-lampshade tube knob, 8-light blocking mechanism, 801-light blocking bar, 802-semi-cylindrical block, 803-light blocking bar supporting seat, 804-light blocking bar knob and 9-light blocking plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.