CN106404623B - Suspended Sedimentation Concentration monitors system and monitoring method - Google Patents
Suspended Sedimentation Concentration monitors system and monitoring method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004062 sedimentation Methods 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 86
- 239000013307 optical fiber Substances 0.000 claims abstract description 64
- 238000003384 imaging method Methods 0.000 claims abstract description 55
- 239000013049 sediment Substances 0.000 claims abstract description 46
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000009825 accumulation Methods 0.000 claims description 21
- 238000012806 monitoring device Methods 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 238000004458 analytical method Methods 0.000 abstract description 6
- 230000003321 amplification Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 5
- -1 guide-lighting Substances 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000000790 scattering method Methods 0.000 description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000035611 feeding Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
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Abstract
A kind of Suspended Sedimentation Concentration monitoring system, including control unit, light source, imaging device and probe, probe includes fixed device, Optic transmission fiber and optical fiber image transmission beam, optical fiber image transmission beam includes tens of thousands of monofilament optical fiber, the image for picking up the pickup of optical fiber image transmission beam picture end is transmitted to output end by every monofilament optical fiber by optical fiber image transmission beam point by point, output end is connected with imaging device, and control unit is connect with light source with imaging device respectively.In addition, also providing a kind of monitoring method.Above-mentioned Suspended Sedimentation Concentration monitoring system and monitoring method, using Optic transmission fiber, guide-lighting, optical fiber image transmission beam picks up the methods of picture, realize the micromation of open probe, the imaging of the real-time amplification to silt liquor is realized in conjunction with imaging device, image processing speed is improved according to digital image gray level analysis, sediment concentration can be obtained real-time, quickly, have many advantages, such as that small to water body to be measured interference, measuring speed is fast, range is big and precision is higher.
Description
Technical field
The present invention relates to monitoring water environment technical fields, monitor system and monitoring more particularly to a kind of Suspended Sedimentation Concentration
The rapid survey to water body microvariations to be measured, wide range and degree of precision may be implemented in method.
Background technique
Sediment content not only directly affects the optical characteristics such as water quality transparency and water colour, to aquatic ecological environment and river mouth sea
Bank erosion and deposition evolution process also has an impact.Suspended Sedimentation Concentration is that the hydrology of most basic key and environment are joined in river and seawater
Number, has important practical significance to the research of the accurate quantification of water body sediment concentration.Research suspended sediment mass concentration at present
Method have the methods of sampling method, optical method, acoustic method and image method.
Sampling method is a kind of traditional sediment concentration analysis mode.Using sampler field sampling, then water sample is carried out
It filters, weighing, calculate suspended sediment.Although this method measurement accuracy is high, it cannot achieve and water body sediment concentration is determined
Point real-time monitoring.
Optical method mainly utilizes optical instrument, according to Mie scattering principle monitor Suspended Matter in Water matter due to absorbing, it is anti-
The factors such as penetrating and scatter influences to carry out the turbidity of analyzing water body caused by transmitted light and scattering light, then demarcates water turbidity and mud
The quantitative relationship of the concentration of suspension such as sand obtains the sediment concentration of water body.
According to the angular relative position of light source and sensor, optical method can also be divided into transmission beam method, scattering method and backscattering
Method.Optics is that sensor is secured within to direction of beam propagation on larger obtuse angle position backwards to scattering method；Scattering method generally will
Sensor is fixed on and direction of beam propagation upright position；Sensor is fixed on face direction of beam propagation position by transmission beam method.
The light beam of directive medium encounters opaque particle and reflection occurs and scatters to change the original direction of propagation in measurement process, in each biography
It broadcasts in direction, 90 ° of directions scattering light are influenced smaller by sediment grain size, and backscattering angle can provide more when sediment concentration is higher
Add sufficient metrical information.To eliminate Color influences, the above method is typically chosen the near-infrared light source of 860 ± 30nm.Due to not
Same matrix, partial size sand grain to the difference of light scattering property, above-mentioned optical detection method accuracy is still lower.90 ° simultaneously
Direction scattering optical detection is only applicable to the smaller situation of sediment concentration, generally takes into account range and accuracy, above-mentioned optical detection side
Method often uses dual sensor mode to detect 90 ° of scattering light and back-scattering light.
Acoustic method passes through the interior acoustic signal inverting reflected from certain section by silt or other suspended particulates of measurement water body
Calculate concentration of suspended particles.Although the reflected intensity of sound wave increases with sediment concentration, it can be dense with silt in communication process
Degree increases and decays, therefore such methods can only measure 0.6-3.0kg/m3Finite Concentration range.
With the development of camera work and Digital image technology, it is possibly realized using image method measurement sediment concentration.Zhong Qiang
Et al. propose sediment concentration gradation original position real-time measurement apparatus and its method in a kind of natural river
(ZL201410190678.0), the device by one it is closed enter water hull body realize sediment concentration gradation in situ adopt in real time
Collection enters water hull body side surface setting transparent flat observation window, and annular LED light source, micro-lens and industrial camera is fixedly mounted in inside
Equal measuring devices；Then acquisition image is obtained by image processing techniques such as particle image recognizer and Laplace operators
Sediment concentration and gradation information.This method image processing process is more complicated, and processing speed is slower, and then influences entirely to measure
The sampling interval of journey.
Other than the limitation of sediment content measurement accuracy and measurement range, there is also enter water to visit for above-mentioned optical method and acoustic method
The big disadvantage of area of bed.Although image method has breakthrough in sediment content measurement accuracy and measurement range, enter water prode
Size and measuring speed problem are still unresolved.Large scale probe can have an immense impact on to water body to be measured, slower measuring speed
It is unable to measure the quick variation of water body sediment concentration, it is very unfavorable to water body dynamics research.
Summary of the invention
In consideration of it, interfering Suspended Sedimentation Concentration small, that measuring speed is fast quickly real in water body to be measured it is necessary to provide a kind of
When monitoring system and monitoring method.
A kind of Suspended Sedimentation Concentration monitoring system, including control unit, light source, imaging device and probe, the probe packet
Fixed device, Optic transmission fiber and optical fiber image transmission beam are included, the optical fiber image transmission beam includes tens of thousands of monofilament optical fiber, the fibre optic image transmission
One end of beam is to pick up as end, and the other end is output end, and the optical fiber image transmission beam is by the image picked up as end that picks up by every
The monofilament optical fiber is transmitted to the output end point by point, described to pick up as end is fixed on the fixed device, the output end and institute
Imaging device connection is stated, one end of the Optic transmission fiber is light end, and the light end out is fixed on the fixed device, described
The other end of Optic transmission fiber is connected with the light source, the light end phase out of the optical fiber image transmission beam picked up as end and the Optic transmission fiber
To setting, described control unit is connect with the light source with the imaging device respectively.
The imaging device includes adjustable lens barrel, lens, CCD camera and optic fibre switching part in one of the embodiments,
The adjustable lens barrel includes fixed lens barrel and mobile lens barrel, and the lens are set in the fixed lens barrel, and the CCD camera is set to
The one end of the fixed lens barrel far from the mobile lens barrel, one end of the mobile lens barrel are sheathed in the fixed lens barrel, institute
The other end that optic fibre switching part is set to the mobile lens barrel is stated, the mobile lens barrel is removable relative to the fixed lens barrel.
The perpendicular bisector weight picked up as end for going out light end and optical fiber image transmission beam of the Optic transmission fiber in one of the embodiments,
It closes, the core diameter of the Optic transmission fiber is greater than the diameter for picking up effective imaging region as end of the optical fiber image transmission beam.
The light end out of the Optic transmission fiber and picking up as at a distance from end for the optical fiber image transmission beam in one of the embodiments,
For grade.
The diameter of the single monofilament optical fiber in the optical fiber image transmission beam is 13 μm in one of the embodiments, point
Resolution 44LP/mm.
The diameter of the Optic transmission fiber is 2mm in one of the embodiments, and the diameter of the optical fiber image transmission beam is 1mm.
The probe is open system in one of the embodiments,.
A kind of monitoring method using Suspended Sedimentation Concentration monitoring device, includes the following steps:
The probe is put into silt liquor；
Described control unit sends signal and opens the light source and the imaging device, passes through picking up for the optical fiber image transmission beam
As several images of end continuous acquisition；
The described image of acquisition is sent to described control unit by the imaging device；
Described control unit handles described image, obtains in real time, the average gray accumulation mean of display described image；
By the relational expression of sediment concentration value and the average gray accumulation mean of image, the different average ashes is calculated
Spend the corresponding sediment concentration value of accumulation mean.
The relationship of the average gray accumulation mean of the sediment concentration value and described image in one of the embodiments,
Formula obtains by the following method:
The silt liquor of various concentration is respectively configured；
The fixation device of the probe is put into the silt liquor；
Described control unit sends signal and opens the light source and the imaging device, multiple images of continuous acquisition；
The described image of acquisition is sent to described control unit by the imaging device；
Described control unit handle described image, obtain, show and store in real time every described image average gray value,
Accumulation mean and gray scale spectrum information obtain the average gray accumulation mean of multiple described images under different sediment concentrations；
The relational expression of the average gray accumulation mean of sediment concentration value and described image is obtained by being fitted.
It further include to described in one of the embodiments, before by the step popped one's head in and be put into silt liquor
The step of Suspended Sedimentation Concentration monitoring device is demarcated, scaling method is as follows:
The fixation device of the probe is put into clear water；
Described control unit sends signal and opens the light source and the imaging device, adjusts imaging device and imaging is filled
Blur-free imaging is set, while adjusting light source intensity, prevents image from supersaturation occur.
Above-mentioned Suspended Sedimentation Concentration monitoring system and monitoring method, using Optic transmission fiber, guide-lighting, optical fiber image transmission beam picks up picture etc.
Method realizes the micromation of open probe, realizes the imaging of the real-time amplification to silt liquor in conjunction with imaging device, according to
Digital image gray level analysis improves image processing speed, can obtain sediment concentration real-time, quickly, has dry to water body to be measured
Disturb the advantages that small, measuring speed is fast, range is big and precision is higher.
Detailed description of the invention
Fig. 1 is that the Suspended Sedimentation Concentration of an embodiment monitors the structural schematic diagram of system；
Fig. 2 is the enlarged structure schematic diagram of probe shown in FIG. 1；
Fig. 3 is the calibration schematic diagram that Suspended Sedimentation Concentration shown in FIG. 1 monitors system.
Specific embodiment
In order to be more clear the objectives, technical solutions, and advantages of the present invention, with reference to the accompanying drawings and embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Referring to Fig. 1, the Suspended Sedimentation Concentration of an embodiment monitors system 100, including probe 10, light source 20, imaging
Device 30 and control unit 40.
Probe 10 includes fixed device 12, Optic transmission fiber 14 and optical fiber image transmission beam 16.Optical fiber image transmission beam 16 includes tens of thousands of
Monofilament optical fiber, one end of optical fiber image transmission beam 16 are to pick up as end 162, and the other end is output end 164, and optical fiber image transmission beam 16 will be picked up as end
162 images picked up are transmitted to output end 164 by every monofilament optical fiber point by point, pick up as end 162 is fixed on fixed device 12, defeated
Outlet 164 and imaging device 30 connect.One end of Optic transmission fiber 14 is light end 142, and fixed device 12 is fixed at light end 142 out
On, the other end and light source 20 of Optic transmission fiber 14 connect.The light end out of optical fiber image transmission beam 16 picked up as end 162 and Optic transmission fiber 14
142 are oppositely arranged.
In a wherein embodiment, Fig. 2 is please referred to, fixed device 12 includes two flange seats 122, two flange seats
122 are fixedly connected by two or more fixed screws 124 with nut.It picks up as end 162 and light end 142 passes through fibre-optical splice respectively out
It is mounted on two flange seats 122.Fibre-optical splice is specifically as follows SMA905 fibre-optical splice.It is appreciated that fixed device 12
It can be the fixation device of other structures.
Further, Optic transmission fiber 14 goes out the picking up as the perpendicular bisector at end 162 is heavy as far as possible of light end 142 and optical fiber image transmission beam 16
It closes.The core diameter of Optic transmission fiber 14 is greater than the diameter for picking up effective imaging region as end of optical fiber image transmission beam 16.Guarantee output
Light energy uniform illumination optical fiber image transmission beam 16 imaging region.Wherein, effective 16 fibre core of imaging region, that is, optical fiber image transmission beam is horizontal
Section.The light end 142 out of Optic transmission fiber 14 is picked up with optical fiber image transmission beam 16 as being grade at a distance from end 162, and water body stream can be made
It crosses.
In one embodiment, the diameter of Optic transmission fiber is 2mm, and the diameter of optical fiber image transmission beam is 1mm.Optical fiber image transmission beam
In single monofilament optical fiber diameter be 13 μm, resolution ratio 44LP/mm.Optical fiber image transmission beam 16 is by ten hundreds of single monofilament optical fiber
Composition can will pick up and be transmitted to output end point by point by every monofilament optical fiber as the certain area image in end 162, big with numerical aperture,
The features such as aberrationless and the small depth of field, resolution ratio are determined by the single monofilament fibre diameter of optical fiber image transmission beam 16.
Probe 10 is open subaqueous survey equipment.Go out light end 142 and optical fiber image transmission beam 16 in addition to Optic transmission fiber 14
It picks up as end 162 and fixed screw 124 and nut, 10 four sides of probe is open, reduces the shadow of 10 pairs of water sports of probe as far as possible
It rings.
Light source 20 is fiber coupling LED light source.Light source 20 is connect with Optic transmission fiber 14, provides lighting source for probe.?
In one embodiment, light source 20 is 15W high-capacity LED cold light source.
The acquisition of imaging device 30 picks up the suspension bed sediment image sent as end 162 by optical fiber image transmission beam 16.At one
In embodiment, imaging device 30 includes adjustable lens barrel 32, lens 34, CCD camera 36 and optic fibre switching part 38.
Adjustable lens barrel 32 includes fixed lens barrel 322 and mobile lens barrel 324, and lens 34 are set in fixed lens barrel 322.CCD phase
Machine 36 is set to the one end of fixed lens barrel 322 far from mobile lens barrel 324, and in a wherein embodiment, CCD camera 36 is MV-
1300UM camera.One end of mobile lens barrel 324 is sheathed in fixed lens barrel 322, and optic fibre switching part 38 is set to mobile lens barrel 324
The other end, mobile lens barrel 324 are removable relative to fixed lens barrel 322.Lens barrel 324 is moved in one of the embodiments, and is consolidated
Fixed lens barrel 322 is connected through a screw thread.The external screw thread of mobile lens barrel 324 is connected with the internal screw thread of fixed lens barrel 322.
By setting lens 34 and 36 photosurface of output end of image 164 and CCD camera of optical fiber image transmission beam 16 between away from
From can control image magnification ratio.Lens 34 are fine-tuning right to the distance between the output end of image 164 of optical fiber image transmission beam 16
Coke guarantees CCD camera 36 to 164 blur-free imaging of output end of optical fiber image transmission beam 16.
Control unit 40 is connect with light source 20 with imaging device 30 respectively.Control unit 40 passes through data line 50 and light source 20
It is connect with imaging device 30.In a wherein embodiment, control unit 40 is computer.Specifically, 40 He of control unit
The CCD camera 36 of imaging device 30 connects.
Control unit 40 is imaged using Matlab software programming process control light source 20 and CCD camera 36, while will acquisition
The image arrived carries out image procossing and storage, finally displays and store the real-time letter of the sediment concentration of 10 positions of probe
Breath.Wherein, image procossing uses simple and efficient gray analysis mode, guarantees the real-time quick of measurement process.
Above-mentioned Suspended Sedimentation Concentration monitors 100 course of work of system are as follows: probe 10 is sunk to water body to be measured, it is single to open control
Member 40 and control software, send acquisition by controlling software design acquisition parameter, are beaten by the transmitting instruction of data line 50
It opens the light source 20 and CCD camera 36；Light source 20 illuminates the water body at probe 10 by Optic transmission fiber 14, and optical fiber image transmission beam 16 will pick up picture
Nearby suspension bed sediment image is transmitted to output end 164 at end 162, and suspension bed sediment image is imaged onto CCD camera by the amplification of lens 34
36 photosurface；36 timing continuous acquisition image of CCD camera is simultaneously transmitted to control unit 40, and control unit 40 is directly according to prior
It is flat the accumulation that relational expression is continuously measured in the surveyed Aquatic suspended solids concentration of the quick real-time display of certain window and providing has been demarcated
Result；After acquisition, clicks and save order storing data.
Above-mentioned Suspended Sedimentation Concentration monitors system 100, the side such as, optical fiber image transmission beam 16 ten picture guide-lighting using Optic transmission fiber 14
Method realizes the micromation of open probe 10, realizes the imaging of the real-time amplification to silt liquor, root in conjunction with imaging device 30
Image processing speed is improved according to digital image gray level analysis, sediment concentration can be obtained real-time, quickly, had to water body to be measured
Interfere the advantages that small, measuring speed is fast, range is big and precision is higher.
In addition, also providing a kind of monitoring method using above-mentioned Suspended Sedimentation Concentration monitoring device 100, including walk as follows
It is rapid:
S10, probe is put into silt liquor.
It please also refer to Fig. 3, further include being supervised to Suspended Sedimentation Concentration before the step that is put into silt liquor of popping one's head in
The step of device is demarcated is surveyed, scaling method is as follows:
S1, the fixation device of probe is put into clear water.
Specifically, choosing or making suitable calibration container 60, probe is mounted on adjustable fixation and fills 90 feedings and demarcate and is held
In device 60, the injected clear water into calibration container 60, until flooding probe.
S2, control unit send signal and open light source and imaging device, adjust imaging device make imaging device clearly at
Picture, while light source intensity is adjusted, prevent image from supersaturation occur.
Specifically, opening the software operation interface of control unit, instruction is sent, opens light source, it is adjustable to adjust imaging device
Lens barrel focusing prevents ccd image from going out so that CCD camera is to optical fiber image transmission beam output end blur-free imaging, while adjusting light source intensity
Existing supersaturation.Then, fixed light source intensity screws the fixing clasp on adjustable lens barrel.
S20, control unit send signal and open light source and imaging device, pass through picking up as end continuous acquisition for optical fiber image transmission beam
Several images.
The image of acquisition is sent to control unit by S30, imaging device.
S40, control unit handle image, obtain in real time, the average gray accumulation mean of display image.
In a wherein embodiment, control unit can also save ten images as end continuous acquisition.
S50, by the relational expression of sediment concentration value and the average gray accumulation mean of image, calculate different average ashes
The corresponding sediment concentration value of accumulation mean is spent, realizes the real-time monitoring of sediment concentration.
Specifically, can quickly handle acquired image in real time by Matlab software and provide silt according to calibration relational expression
Concentration in software operation interface display window real-time display and records sediment concentration.Last click data saves, and stores surveyed mud
Husky concentration information.
In S50, the relational expression of the average gray accumulation mean of sediment concentration value and image obtains by the following method:
S51, the silt liquor that various concentration is respectively configured.
S52, the fixation device of probe is put into silt liquor.
Specifically, calibration container 60 is placed on magnetic stirring apparatus 70, certain mass silt and certain volume clear water are weighed,
It pours into calibration container 60, makes specific sediment concentration solution, and continuous using the magnetic stir bar 80 of magnetic stirring apparatus 70
Stirring, prevents silt to be layered, and will enter water prode and is put into calibration container 60, by 90 adjusting position of adjustable fixer, guarantees
Probe is flooded by silt liquor.
S53, control unit send signal and open light source and imaging device, multiple images of continuous acquisition.
The image of acquisition is sent to control unit by S54, imaging device.
S55, control unit handle image, obtain, show and store the average gray value, cumulative mean of every image in real time
Value and gray scale spectrum information, obtain the average gray accumulation mean of multiple images under different sediment concentrations.
S56, the relational expression of the average gray accumulation mean of sediment concentration value and image is obtained by being fitted.
After being fitted the relational expression for the average gray accumulation mean for obtaining sediment concentration value and image, it can also lead to
The relational expression demarcated is crossed, software is recompilated, each picture average gray value is corresponding at sediment concentration.
Above-mentioned Suspended Sedimentation Concentration monitoring method, using Optic transmission fiber, guide-lighting, optical fiber image transmission beam picks up the methods of picture, is combined into
It is imaged as device realizes the real-time amplification to silt liquor, image processing speed is improved according to digital image gray level analysis,
Sediment concentration can be obtained real-time, quickly, and has and small, measuring speed is fast, range is big and precision is higher etc. is interfered to water body to be measured
Advantage.In addition, above-mentioned Suspended Sedimentation Concentration monitoring method is easy to operate, real-time, quickly.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (8)
1. a kind of Suspended Sedimentation Concentration monitors system, which is characterized in that including control unit, light source, imaging device and probe, institute
Stating probe includes fixed device, Optic transmission fiber and optical fiber image transmission beam, and the optical fiber image transmission beam includes tens of thousands of monofilament optical fiber, described
One end of optical fiber image transmission beam is to pick up as end, and the other end is output end, and the optical fiber image transmission beam picks up the image as end pickup for described
The output end is transmitted to point by point by monofilament optical fiber described in every, it is described to pick up as end is fixed on the fixed device, it is described defeated
Outlet is connected with the imaging device, and one end of the Optic transmission fiber is light end, and the fixed dress is fixed at the light end out
It sets, the other end of the Optic transmission fiber is connected with the light source, and the optical fiber image transmission beam is picked up as end and the Optic transmission fiber
Go out light end be oppositely arranged, described control unit is connect with the light source with the imaging device respectively；
The Optic transmission fiber goes out the picking up as the perpendicular bisector at end is overlapped of light end and optical fiber image transmission beam, and the fibre core of the Optic transmission fiber is straight
Diameter is greater than the diameter for picking up effective imaging region as end of the optical fiber image transmission beam.
2. Suspended Sedimentation Concentration as described in claim 1 monitors system, which is characterized in that the imaging device includes adjustable mirror
Cylinder, lens, CCD camera and optic fibre switching part, the adjustable lens barrel include fixed lens barrel and mobile lens barrel, and the lens are set to institute
It states in fixed lens barrel, the CCD camera is set to the one end of the fixed lens barrel far from the mobile lens barrel, the mobile lens barrel
One end is sheathed in the fixed lens barrel, and the optic fibre switching part is set to the other end of the mobile lens barrel, the mobile lens barrel
It is removable relative to the fixed lens barrel.
3. Suspended Sedimentation Concentration as described in claim 1 monitors system, which is characterized in that the Optic transmission fiber go out light end with
The optical fiber image transmission beam is picked up as the distance at end is grade.
4. Suspended Sedimentation Concentration as described in claim 1 monitors system, which is characterized in that single in the optical fiber image transmission beam
The diameter of the monofilament optical fiber is 13 μm, resolution ratio 44LP/mm.
5. Suspended Sedimentation Concentration as described in claim 1 monitors system, which is characterized in that the diameter of the Optic transmission fiber is
2mm, the diameter of the optical fiber image transmission beam are 1mm.
6. a kind of monitoring method using Suspended Sedimentation Concentration monitoring device according to any one of claims 1 to 5, special
Sign is, includes the following steps:
The probe is put into silt liquor；
Described control unit sends signal and opens the light source and the imaging device, passes through picking up as end for the optical fiber image transmission beam
Several images of continuous acquisition；
The described image of acquisition is sent to described control unit by the imaging device；
Described control unit handles described image, obtains in real time, the average gray accumulation mean of display described image；
By the relational expression of sediment concentration value and the average gray accumulation mean of image, it is tired to calculate the different average gray
The corresponding sediment concentration value of product average value.
7. monitoring method as claimed in claim 6, which is characterized in that the average gray of the sediment concentration value and described image
The relational expression of accumulation mean obtains by the following method:
The silt liquor of various concentration is respectively configured；
The fixation device of the probe is put into the silt liquor；
Described control unit sends signal and opens the light source and the imaging device, multiple images of continuous acquisition；
The described image of acquisition is sent to described control unit by the imaging device；
Described control unit handles described image, obtains, shows and store the average gray value, accumulation of every described image in real time
Average value and gray scale spectrum information obtain the average gray accumulation mean of multiple described images under different sediment concentrations；
The relational expression of the average gray accumulation mean of sediment concentration value and described image is obtained by being fitted.
8. monitoring method as claimed in claim 6, which is characterized in that by it is described pop one's head in the step that is put into silt liquor it
Before, further include the steps that demarcating the Suspended Sedimentation Concentration monitoring device, scaling method is as follows:
The fixation device of the probe is put into clear water；
Described control unit sends signal and opens the light source and the imaging device, adjusts imaging device and makes imaging device clear
Clear imaging, while light source intensity is adjusted, prevent image from supersaturation occur.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744281.0A CN106404623B (en) | 2016-08-29 | 2016-08-29 | Suspended Sedimentation Concentration monitors system and monitoring method |
| PCT/CN2017/087169 WO2018040649A1 (en) | 2016-08-29 | 2017-06-05 | Suspended sand concentration monitoring system and method |
Applications Claiming Priority (1)
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| CN106404623B (en) * | 2016-08-29 | 2019-04-05 | 南开大学 | Suspended Sedimentation Concentration monitors system and monitoring method |
| CN107631968B (en) * | 2017-09-13 | 2021-04-02 | 南开大学 | Multichannel suspended solid concentration synchronous monitoring system and monitoring method |
| CN108152179B (en) * | 2017-12-22 | 2023-07-25 | 华东师范大学 | Multifunctional suspended sand concentration calibration system |
| CN107894381B (en) * | 2017-12-29 | 2024-02-02 | 广州和时通电子科技有限公司 | South is for river Sand measuring device and method |
| CN108613905A (en) * | 2018-05-14 | 2018-10-02 | 西安新汇泽测控技术有限公司 | A kind of water body recovery technology concentration real time on-line monitoring sensor and monitoring method |
| CN109839335A (en) * | 2019-03-22 | 2019-06-04 | 长江水利委员会长江科学院 | The flocculating setting experimental system of a variety of hydrodynamic forces and concentration environment can directly be observed |
| CN110362710A (en) * | 2019-08-25 | 2019-10-22 | 贵州大学 | Pulp density test macro and method based on image recognition technology |
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| CN111044419A (en) * | 2019-12-30 | 2020-04-21 | 华侨大学 | Machine-made sand gradation measuring system based on two-dimensional dynamic image method |
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| CN112098289B (en) * | 2020-09-23 | 2021-04-20 | 中国海洋大学 | Device and method for measuring concentration of ocean suspended particulate matters based on digital image processing |
| CN113155691B (en) * | 2021-04-19 | 2024-08-13 | 西安新汇泽测控技术有限公司 | Matrix type runoff sediment content detection equipment and detection method |
| CN113155412A (en) * | 2021-04-26 | 2021-07-23 | 中国海洋大学 | Device and method for monitoring suspended load and bed load sand transportation rate in real time |
| CN114486651A (en) * | 2022-01-05 | 2022-05-13 | 南通大学 | Device for measuring in-situ bottom mud resuspension rate |
| CN114720317B (en) * | 2022-04-15 | 2024-05-14 | 中国农业大学 | Method and device for improving measurement accuracy of runoff sand content by volume displacement method |
| CN115773970B (en) * | 2022-11-25 | 2023-06-27 | 西安水文水资源勘测中心 | Suspended sediment particle image acquisition system and method |
| CN115839909B (en) * | 2022-12-06 | 2023-08-25 | 广东省水利水电科学研究院 | Device and method for measuring sediment in water flow |
| CN116688614B (en) * | 2023-07-11 | 2024-01-05 | 中国海洋大学 | Automatic in-situ layered suction filtration device for seabed floating mud layer and working method |
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| WO2018040649A1 (en) | 2018-03-08 |
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