CN105717050A - Working method of water environment monitoring system based on image visual processing technology - Google Patents
Working method of water environment monitoring system based on image visual processing technology Download PDFInfo
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- CN105717050A CN105717050A CN201610238233.4A CN201610238233A CN105717050A CN 105717050 A CN105717050 A CN 105717050A CN 201610238233 A CN201610238233 A CN 201610238233A CN 105717050 A CN105717050 A CN 105717050A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/04—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by dip members, e.g. dip-sticks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
Abstract
The invention relates to a working method of a water environment monitoring system based on the image visual processing technology.The system comprises a test tube, a video acquisition module, an image processing module, a wireless communication module and a floater, wherein a lower end opening of the test tube is used for being arranged below the water surface, a photographing device is arranged over an upper end opening, and the photographing device is used for shooting water surface images in the test tube; the video acquisition module is connected with the photographing device and is used for converting the acquired images into digital images; the image processing module is connected with the video acquisition module, and first sample data are stored in the image processing module and used for recording grey level values of all types of water quality; the wireless communication module is connected with the image processing module and used for receiving remote control signals and outputting water quality conditions; the floater is arranged at the periphery of the test tube and used for making the test tube perpendicularly float on the water surface, and the floater is provided with one or more propellers used for controlling the positions, on the water surface, of the test tube; the image processing module is used for conducting grey level processing on the digital images so as to obtain the grey level value of water surface video, and the water quality condition is obtained by comparing the grey level value with the first sample data.
Description
Technical field
The present invention relates to a kind of electronic surveying field, particularly relate to a kind of image vision treatment technology and realize water level and water monitoring device.
Background technology
Existing Level monitor often can only be independent sensed water level, it is impossible to detection water quality, it is necessary to additionally adopt water monitoring device to realize, how to realize measuring the technical barrier that water level and water quality are this areas simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of monitoring water environment system being adapted for water quality measurement, this monitoring water environment system adopts gray scale detection principle to carry out water quality monitoring, namely the water surface image of shooting is carried out gray proces and obtains the gray value of this water surface image to obtain water quality situation.
The invention provides a kind of monitoring water environment system, including:
The measurement pipe being distributed up and down during use, its lower port is provided with illuminator and enters the water surface in use, and the upper port place measuring pipe sets a camera head, and this camera head is suitable to shoot the water surface image in described measurement pipe；
Video acquisition module, is connected with described camera head, is suitable to the image gathered is transformed to digital picture；
With the image processing module that described video acquisition module is connected, this image processing module storage has the first sample data, described first sample data to be suitable to record the gray value (water quality is more poor, and gray value is more high) of various water quality；
Be connected with described image processing module for receiving remote control signal and export the wireless communication module of water quality situation；
Being located at the peripheral float for making this measurement pipe vertically bubble through the water column of described measurement pipe, this float is provided with at least one propeller for controlling described measurement pipe position on the described water surface；
The method of work of described monitoring water environment system includes: described image processing module is suitable to described digital picture is carried out gray proces, compares and draws water quality situation obtaining the gray value of described water surface image, this gray value and the first sample data.
Wireless communication module is GSM, 3G, 4G or wireless carrier communication module.
Described monitoring water environment system also includes: be located at the water wireless controller communicated wirelessly with described wireless communication module on the bank, it is preferable that PC with GSM, 3G or 4G communication module or panel computer.
Camera head adopts focusing wide angle camera lens or tight shot.
Further, described float is dish type and fixed cover is located on described measurement pipe, and described propeller includes three that centrosymmetry is distributed on described float；Described wireless communication module is connected to the duty for controlling each propeller according to described remote control signal, to control the propeller control of described measurement pipe position on the described water surface in real time.The ambient light impact on water surface image during in order to avoid shooting, the inwall of described measurement pipe is provided with and is suitable to light-absorbing black coating.
Further, the ambient light impact on water surface image in bottom during in order to avoid shooting, and keep current unimpeded when not shooting, so that the water quality in described measurement pipe is consistent with actual water quality, described measurement pipe is distributed on the tube wall be positioned at underwater side multiple through hole, and the bottom end closure of this measurement pipe；On body below the water surface, on a sheathed tube wall, distribution has the sleeve pipe of through hole；Described sleeve pipe and one is suitable to drive the rotating mechanism that this sleeve pipe rotates around described measurement pipe to be in transmission connection, the controller that this rotating mechanism is connected with described camera head by one controls, when not filming surface image, control described rotating mechanism and drive sleeve rotating so that the through hole on described measurement pipe is relative respectively with the through hole on sleeve pipe, manage so that current are suitable to pass in and out described measurement；When filming surface image, control described rotating mechanism and drive sleeve rotating so that the through hole on described measurement pipe and the through hole on sleeve pipe offset one from another, manage to prevent extraneous light from entering described measurement.
As another embodiment, being positioned on the tube wall below the water surface distribution in use and have multiple through hole of described measurement pipe, sheathed sleeve on the body below the water surface；Described sleeve pipe and one is suitable to drive this sleeve pipe to connect along the displacement drive mechanism driving of described measurement pipe upper and lower displacement, and the controller that this displacement drive mechanism is connected with described camera head by controls；When filming surface image, controlling described displacement drive mechanism and drive sleeve pipe to shift up, so that measuring each through hole on pipe described in described sleeve covers, managing to prevent extraneous light from entering described measurement；When not filming surface image, control described sleeve pipe to bottom offset, and make described sleeve pipe not cover each through hole on described measurement pipe, manage so that current are suitable to pass in and out described measurement.Described displacement drive mechanism is located at device on described measurement pipe, that be connected cylinder, oil cylinder or linear electric motors etc. are adapted for carrying out straight-line displacement with described sleeve pipe.
Further, in order to realize the level measuring to described monitoring water environment system, described monitoring water environment system also includes: flexible scale, and one end is fixed on the bottom, the other end and one is suitable to the wrap-up of this flexible scale of rolling and is connected, and this wrap-up is fixed on described measurement pipe；Directive wheel, it is located on the inwall of described measurement pipe, on the inwall of this measurement pipe, the upper and lower of contiguous described directive wheel is respectively equipped with the upper and lower guide post parallel with the wheel shaft of described directive wheel, described flexible scale is suitable to pass from the gap of described upper and lower guide post and the inwall measuring pipe respectively and be fitted on the inner side wheel face of described directive wheel, and the top of described directive wheel is in above the water surface.
In order to make camera head when shooting, it is more prone to distinguish the edge of water surface image, float in the pipe of white is also included in described measurement pipe, in this pipe, float is the column structure of the center through hole with vertical setting, described image mechanism is suitable to the water surface image shooting in described center through hole, and in this pipe, float is suitable to fluctuate in described measurement pipe with the water surface.
Compared with prior art, present invention have the advantage that (1) present invention passes through water surface image to obtain the corresponding situation of water quality, device is simple, it is simple to carry out water quality measurement easily or anticipation when carrying out water quality test in the wild or unconditionally, it is not necessary to tedious steps；(2) it is distributed on the tube wall be positioned at underwater side and has multiple through hole by measuring pipe, measure the bottom end closure of pipe, and coordinate with the sleeve pipe of distribution through hole, make when not filming surface image, control described rotating mechanism and drive sleeve rotating so that the through hole on described measurement pipe and the through hole on sleeve pipe coincide is suitable for current circulation；When filming surface image, control described rotating mechanism and drive sleeve rotating so that the through hole on described measurement pipe and the through hole on sleeve pipe offset one from another, manage to prevent extraneous light from entering described measurement；The combination of above-mentioned parts makes when carrying out water quality and judging, it is to avoid the impact of light under water, and the water surface image making shooting is more accurate, with the precision of monitoring of increasing water quality further；(3) it is provided with the parts such as the float, the directive wheel that are suitable to make this measurement pipe vertically bubble through the water column by the periphery of flexible scale, described measurement pipe, makes described monitoring water environment system to swim in and the water surface carries out level measuring, to obtain water level value more accurately.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiment and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein
The structural representation of the monitoring water environment system of Fig. 1 present invention.
The rotating mechanism of Fig. 2 present invention, controller, camera head connection diagram；
A kind of embodiment of the rotating mechanism of Fig. 3 present invention；
The another embodiment of the rotating mechanism of Fig. 4 present invention；
The structure top view of each gag lever post in the another embodiment of the rotating mechanism of Fig. 5 present invention；
The structural representation for water level detection part of the water level detecting system of Fig. 6 present invention.
Wherein, pipe 1, the water surface 2, water surface image 2-1, float 3, flexible scale 4, wrap-up 5, directive wheel 6, upper guide post 7-1, lower guide post 7-2, sleeve pipe 8-1, annular seal space 8-2, motor 8-3, motor 8-4, rotating shaft 8-5, spacing cross bar 8-6, the first gag lever post 8-7a, the second gag lever post 8-7b, the 3rd gag lever post 8-7c, the 4th gag lever post 8-7d are measured.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiment 1
Such as Fig. 1, a kind of monitoring water environment system, including:
Measure pipe 1, its lower port be provided with illuminator and in use this lower port be suitable to overall enter the water surface 2, upper port place sets a camera head, and this camera head is suitable to the water surface image 2-1 shooting in described measurement pipe 1；
Video acquisition module, is connected with described camera head and is suitable to collection image is transformed to digital picture；
With the image processing module that described video acquisition module is connected, this image processing module storage has the first sample data, and described first sample data is suitable to record the gray value of various water quality；
Be connected with described image processing module for receiving remote control signal and export the wireless communication module of water quality situation；
Being located at the peripheral float for making this measurement pipe vertically bubble through the water column of described measurement pipe, this float is dish type and fixed cover is located on described measurement pipe, and described propeller includes three that centrosymmetry is distributed on described float；Described wireless communication module is connected to the duty for controlling each propeller according to described remote control signal, to control the propeller control of described measurement pipe position on the described water surface in real time；
Described image processing module is suitable to described digital picture is carried out gray proces, and to obtain the gray value of described water surface image 2-1, this gray value and the first sample data are compared and drawn water quality situation.
Water quality detection principle is that the gray value utilizing different quality corresponding gray value sample and water surface image to be detected compares, and namely image processing module storage has each gray value sample of different quality, i.e. the first sample data.
Adopting MATLAB built-in function that described water surface image 2-1 is carried out corresponding gray value process, step is as follows:
I=imread (' image.jpg ');% opens pending picture (8 gray scales)
Imshow (I);% shows this picture
C=mean2 (I);% calculates the meansigma methods of image pixel matrix
The gray value of described water surface image 2-1 just can be calculated by mean2 function.
Table 1 is the average gray value of various water quality, i.e. the first sample data:
| Water sample type | Pure water | River | Swimming-pool water | It is mixed with the water of mud |
| Average gray value | 132 | 85 | 89 | 67 |
| Water sample type | By the water of dye discoloration | Prepared Chinese ink water | Industrial wastewater | Green tea water |
| Average gray value | 37 | 21 | 23 | 90 |
According to general general knowledge, the water quality quality of these water samples may be arranged such that: pure water > green tea water > swimming-pool water > river > it is mixed with the water of mud > by the water of dye discoloration > industrial wastewater ≈ prepared Chinese ink water, when water body sampled images gray value (brightness value) more hour, it is believed that its water quality is more poor, vice versa.Thus when water quality detection, it is possible to by the corresponding water quality conclusion that calculates to water body overall gray level, it is also possible to by the process means of the higher levels such as sample extraction, neutral net, pattern recognition, accomplish the water quality index that detection turbidity etc. more refines.
Such as, if the gray scale of the water surface image 2-1 detected is 85, then show that this water quality is suitable with the water quality of river.
Embodiment two
On the basis of embodiment one, in order to avoid the ambient impact on water surface image 2-1, described camera head and upper port are tightly connected, and the inwall of described measurement pipe 1 is provided with and is suitable to light-absorbing black coating.
Embodiment three
See Fig. 2, further, on the basis of embodiment two, in order to avoid the light impact on shooting under water further, to improve the accuracy of the brightness of water surface image 2-1 of shooting, colourity, described measurement pipe 1 is being positioned on the tube wall below the water surface 2 and is being distributed is having multiple through hole and the bottom end closure of this measurement pipe 1；On body below the water surface 2, a sheathed distribution has the sleeve pipe 8-1 of through hole；Described sleeve pipe 8-1 and one is suitable to drive this sleeve pipe 8-1 rotating mechanism rotated around described measurement pipe 1 to be in transmission connection, the controller that this rotating mechanism is connected with described camera head by one controls, when not filming surface image 2-1, control described rotating mechanism and drive sleeve pipe 8-1 to rotate so that the through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 coincide is suitable for current circulation；When filming surface image 2-1, control described rotating mechanism and drive sleeve pipe 8-1 to rotate so that the through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 offset one from another, to prevent extraneous light from entering described measurement pipe 1.
Described rotating mechanism controls the detailed description of the invention that sleeve pipe rotates around described measurement pipe 1:
See Fig. 3, annular seal space 8-2 is formed between lower surface, bottom and the upper surface, bottom of sleeve pipe 8-1 of described measurement pipe 1, this annular seal space 8-2 is to play waterproof action, a motor 8-3 it is provided with in this annular seal space 8-2, by motor 8-3, rotational angle can be set, the through hole in described measurement 1 and the through hole on sleeve pipe 8-1 is made to coincide or offset one from another (through hole is not shown in FIG.), the support of motor 8-3 is fixed on the lower surface, bottom of described measurement pipe 1, and the center of this support is corresponding with the center of lower surface, described bottom, namely coaxial, rotating shaft one end of described motor 8-3 is connected with the upper surface, bottom of described sleeve pipe 8-1 to drive sleeve pipe 8-1 to rotate around described measurement pipe 1, this motor 8-3 is by controller control.
Rotating shaft one end of motor 8-3 can also be fixed on the lower surface, bottom of described measurement pipe 1, support is coaxially fixed on the upper surface, bottom of described sleeve pipe 8-1, when motor 8-3 rotates, owing to rotating shaft is fixed, will not rotate, then support will rotate, and namely support drives sleeve pipe 8-1 to rotate around described measurement pipe 1.
See Fig. 4, motor 8-4 can also be installed in described annular seal space 8-2, the support of motor 8-4 is fixed on the lower surface, bottom of described measurement pipe 1, and center of lower surface and the center of this support are corresponding bottom this, namely coaxial, rotating shaft 8-5 one end of described motor 8-4 is connected with the upper surface, bottom of described sleeve pipe 8-1, owing to motor 8-4 is difficult to control the angle of rotation when rotating, so being provided with a spacing cross bar 8-6 on the rotating shaft 8-5 of described motor 8-4, in the upper surface, bottom of described sleeve pipe 8-1, two pairs of gag lever posts are installed, described spacing cross bar 8-6 is embedded in described two pairs of gag lever posts (namely first, second gag lever post is a pair, 3rd, 4th gag lever post is a pair) between, when described motor 8-4 rotates, described sleeve pipe 8-1 is driven to rotate around described measurement pipe 1, two pairs of gag lever posts define the anglec of rotation of motor 8-4.
See Fig. 5, specific works process, if described spacing cross bar 8-6 two ends are in the second gag lever post 8-7b, the 3rd gag lever post 8-7c place, through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 coincide, when described spacing cross bar 8-6 two ends are in the first gag lever post 8-7a, the 4th gag lever post 8-7d place, through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 offset one from another, and measure pipe 1 to prevent light from entering.
When camera head prepares shooting, when motor 8-4 controls rotating shaft 8-5 drive spacing cross bar 8-6 rotation to the first gag lever post 8-7a and the four gag lever post 8-7d place, motor 8-4 quits work, at this moment the through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 offset one from another, to prevent extraneous light from entering described measurement pipe 1, camera head shoots, shoot complete, motor 8-4 reverses, when described spacing cross bar 8-6 rotates to the second gag lever post 8-7b and the three gag lever post 8-7c place, the through hole on described measurement pipe 1 and the through hole on sleeve pipe 8-1 is made to coincide, current are made to circulate.
In certain this scheme, gag lever post can also utilize stopper slot to substitute, and the width of rebate of this stopper slot is more than described spacing cross bar 8-6.
Embodiment four
On the basis of embodiment one to three, carrying out the measurement of water level, this technical scheme is as follows:
Also include managing interior float in described measurement pipe 1, in this pipe, float is the column structure of the center through hole with vertical setting, described image mechanism is suitable to the water surface image shooting in described center through hole, and in this pipe, float is suitable to fluctuate in described measurement pipe 1 with the water surface；The edge of this water surface image 2-1 is made to become apparent from by the water surface image 2-1 shot in pipe in float, it is simple to extract the area of this water surface image 2-1.
Embodiment five
Seeing Fig. 6, on the basis of embodiment one to three, the scheme carrying out level measuring is as follows:
The upper port place of described measurement pipe 1 is installed with a camera head, the periphery of described measurement pipe 1 be provided be suitable to make this measurement pipe 1 vertically bubble through the water column 2 float 3, and measurement pipe 1 can be made to bubble through the water column by this float 3, it is not necessary to additionally to fix.
Described monitoring water environment system also includes:
Flexible scale 4, and one end is fixed on the bottom, and the other end and is suitable to the wrap-up 5 of this flexible scale 4 of rolling and is connected, and this wrap-up 5 is fixed on the top of described measurement pipe 1；
Directive wheel 6, it is located on the inwall of described measurement pipe 1, on the inwall of this measurement pipe 1, contiguous described directive wheel upper and lower is respectively equipped with guide post 7-1, lower guide post 7-2, described flexible scale 4 is suitable to pass and be fitted in the inner side wheel face of described directive wheel 6 from described upper guide post 7-1, lower guide post 7-2, and the top of described directive wheel 6 is in above the water surface.
The principle that this embodiment six carries out level measuring is to utilize camera head when filming surface image 2-1, and shooting simultaneously is directed to the flexible scale 4 that wheel 6 is propped up, and the scale of flexible scale 4 is easy to after being propped up be photographed, and just obtains actual water level.
Owing to directive wheel 6 is only small, carry out water quality detection time, when the water surface image 2-1 of shooting carries out gray proces, the parts such as directive wheel, scale are negligible, can't have influence on water surface image 2-1 gray value calculate.
And described flexible scale 4 stretches into the bottom and has no effect on the bottom end closure of described measurement pipe 1.
The present invention can also adopt Canny detective operators to carry out edge extracting for gray component, to obtain each area pixel value of water surface image 2-1, concrete steps are referring to patent of invention, application number 200910232679.6, and name is called " water level measurement system and method based on image vision ".
Periodical " computer and modernization " 06 phase in 2006, in the paper " based on the research of template parameter in the gray-scale Image Edge extraction algorithm of CNN " of Huang Lei, Liu Wenbo, gray-scale edges being extracted and be also described in detail, the present invention can adopt this algorithm too.
Periodical " Nanjing Aero-Space University " 2006, to describing the method adopting neutral net that image is carried out edge extracting in the paper " the Edge extraction algorithm research based on cell neural network " of Huang Lei, the method is applied equally to the present invention.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change that these spirit belonging to the present invention are extended out or variation are still among protection scope of the present invention.
Claims (1)
1. the method for work of a monitoring water environment system, it is characterised in that including:
The measurement pipe being distributed up and down during use, its lower port be provided with illuminator and in use this lower port enter the water surface, measure pipe upper port place set a camera head, this camera head is suitable to shoot the water surface image in described measurement pipe；
Video acquisition module, is connected with described camera head, is suitable to the image gathered is transformed to digital picture；
With the image processing module that described video acquisition module is connected, this image processing module storage has the first sample data, and described first sample data is suitable to record the gray value of various water quality；
Be connected with described image processing module for receiving remote control signal and export the wireless communication module of water quality situation；
Being located at the peripheral float for making this measurement pipe vertically bubble through the water column of described measurement pipe, this float is provided with at least one propeller for controlling described measurement pipe position on the described water surface；
Described method of work includes: described image processing module is suitable to described digital picture is carried out gray proces, compares and draws water quality situation obtaining the gray value of described water surface image, this gray value and the first sample data；
The distribution that is positioned in use on the tube wall below the water surface of described measurement pipe has multiple through hole, sheathed sleeve on the body below the water surface；Described sleeve pipe and one is suitable to drive this sleeve pipe to connect along the displacement drive mechanism driving of described measurement pipe upper and lower displacement, and the controller that this displacement drive mechanism is connected with described camera head by controls；When filming surface image, controlling described displacement drive mechanism and drive sleeve pipe to shift up, so that measuring each through hole on pipe described in described sleeve covers, managing to prevent extraneous light from entering described measurement；When not filming surface image, control described sleeve pipe to bottom offset, and make described sleeve pipe not cover each through hole on described measurement pipe, manage so that current are suitable to pass in and out described measurement；
Annular seal space is formed between lower surface, bottom and the upper surface, bottom of sleeve pipe of described measurement pipe, this annular seal space plays waterproof action, in this annular seal space, it is provided with a motor, makes the through hole in described measurement and the through hole on sleeve pipe coincide or offset one from another by motor；
Described monitoring water environment system also includes:
Flexible scale, one end is fixed on the bottom, and the other end and is suitable to the wrap-up of this flexible scale of rolling and is connected, and this wrap-up is fixed on described measurement pipe；
Directive wheel, it is located on the inwall of described measurement pipe, on the inwall of this measurement pipe, the upper and lower of contiguous described directive wheel is respectively equipped with the upper and lower guide post parallel with the wheel shaft of described directive wheel, described flexible scale is suitable to pass from the gap of described upper and lower guide post and the inwall measuring pipe respectively and be fitted on the inner side wheel face of described directive wheel, and the top of described directive wheel is in above the water surface.
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