JP2003029322A - Photographing system for underwater particles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographing system for underwater particles which can photograph the underwater particles in water to be processed invariably clearly by adjusting the level and flow velocity of the water to be processed. SOLUTION: The photographing system for underwater particles is equipped with a sampling tube 2 which samples the water to be processed from one end part, discharges it from the other end part, and has a photographing part 2b extended nearly horizontally and fitted with a photography window 9, a water discharge device 6 which is provided to the sampling tube 2 and discharges the water to be processed, and a water level adjusting mechanism 5 which is provided to the sampling tube 2 and adjusts the water level of the water to be processed. The sampling tube 2 is provided with a water gauge 13 which measures the water level of the water at the photography part 2b and a current meter 14 which measures the flow velocity of the water in the sampling tube 2. A photography device 15 which photographs the water and a lighting device 16 which lights up the water are provided outside the sampling tube. A controller 21 controls the water discharge device 6 according to the information of the current meter 14 so that the flow velocity of the water to be processed reaches a set value and controls a water level adjusting mechanism 5 according to the information of the water gauge 13 so that the water level of the water to be processed reaches a set value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater particle imaging system for water to be treated, and more particularly to an underwater particle imaging system capable of constantly and vividly imaging underwater particles.

[0002]

2. Description of the Related Art One of the main treatment goals in a water treatment plant is to remove suspended particles dispersed in water to be treated to obtain clear treated water. The suspended particles have various sizes, and in the case of large particles, most of them can be removed by a precipitation process using gravity, but fine particles such as colloid cannot be removed by a precipitation process using only gravity.
In such a case, a coagulant and a coagulant aid are added to the raw water to coalesce the fine particles into large flocs with sufficient sedimentation ability, and the large grown floc particles are precipitated and removed. It is necessary to obtain clearer treated water by performing the precipitation treatment.

However, if the amount of the flocculant or coagulant aid does not match the amount and the nature of the suspended particles that have flowed in with the raw water, flocculation flocs with sufficient sedimentation ability cannot be produced and the fining is clarified. It is not possible to obtain water that has been treated. That is, the purpose of the coagulation-sedimentation treatment is to produce coagulated flocs with a large particle size in order to have sufficient sedimentation ability,
Most of the suspended components are settled and separated while the raw water passes through the settling basin, and clear treated water is taken out. In this case, unless aggregated flocs with a sufficiently large particle size are obtained, the suspension cannot be separated and clear treated water cannot be taken out from the settling basin.

Therefore, monitoring the particle size distribution of agglomerated flocs is a necessary operation for maintenance of a water treatment plant.

In monitoring the particle size distribution of such flocs, conventionally, an operator of a water treatment plant visually observed the flocs several times a day. However, since the criteria for visually observing the particle size distribution of the operator of the water treatment plant is subjective, the injection amount of the coagulant or coagulant aid is determined by
It depended on the operator's long-term experience, and there was no indicator that anyone could objectively judge.

For this reason, recently, a method has been proposed in which an underwater camera is immersed and fixed in a floc formation pond or a sedimentation pond to photograph the particle size state of the floc. However, when the flocculant flocs are photographed by such a method, the floc formation ponds or sedimentation ponds are directly photographed with an underwater camera, so that the water in the floc formation ponds or sedimentation ponds is not captured. The distribution of agglomerated flocs may not be uniform due to complicated flow and density flow caused by sedimentation of large agglomerated flocs. In this case, the aggregated flocs may not always be photographed because the aggregated flocs do not always exist in the field of view of the fixed underwater camera. Furthermore, in the method of shooting with an underwater camera fixed in water, since the underwater camera has been submerged in water for a long time, the underwater camera gradually becomes dirty due to the adhesion of scales and slimes and the adhesion of algae, which causes clear aggregation. Sometimes it becomes impossible to shoot flock and it is often necessary to lift the entire underwater camera to the ground to clean it.

On the other hand, there has been proposed a method in which a camera is installed in the air above the water surface of a floc formation pond or a sedimentation pond to photograph underwater particles such as agglomerated flocs suspended in the water from the air. However, in such a method, if an underwater particle existing below the surface of the water is photographed,
There is an inconvenience that clear images cannot be taken due to optical interference in both the underwater and the air, and only underwater particles existing in an extremely limited field of view immediately below the water surface can be clearly taken.

[0008]

As described above, in any of the above-mentioned photographing methods, it is difficult to photograph the underwater particles clearly at all times.

The present invention has been made in view of the above points, and an object thereof is to provide an underwater particle photographing system capable of always photographing clear underwater particles.

[0010]

SUMMARY OF THE INVENTION The present invention is an underwater particle imaging system for imaging underwater particles of water to be treated. The water to be treated is collected from one end and the water to be treated is discharged from the other end. , A sampling pipe having a photographing part extending in a substantially horizontal shape and having a photographing window attached thereto, a drainage device for discharging the treated water from the collecting pipe, and a water level adjusting mechanism provided in the collecting pipe for adjusting the water level of the treated water And a water level meter attached to the sampling tube to measure the water level of the treated water in the imaging part of the sampling tube, a flow meter attached to the sampling tube to measure the flow velocity of the treated water in the sampling tube, and a A photographing device that is arranged outside the photographing window and photographs the water to be treated, and a lighting device that is installed outside the photographing window of the sampling pipe and that illuminates the treated water of the sampling pipe in synchronization with the photographing device, Control device for controlling the drainage device, water level adjusting mechanism, photographing device, and lighting device , The control device controls the drainage device so that the flow velocity of the treated water in the imaging part of the sampling tube takes a set value based on the information of the anemometer, and the imaging part of the sampling tube in the imaging part of the sampling tube based on the information of the water level meter. An underwater particle imaging system characterized by controlling a water level adjusting mechanism so that the water level of the water to be treated takes a set value.

According to the present invention, the water level and the flow velocity of the water to be treated can be set to the set values in the photographing section of the sampling tube.
As a result, clear underwater particles of the water to be treated can be photographed at all times.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment Hereinafter, an embodiment of an underwater particle photographing system according to the present invention will be described with reference to FIGS. 1 to 7.

1 to 5 are views showing a first embodiment of an underwater particle photographing apparatus according to the present invention.

As shown in FIG. 1, an underwater particle photographing system 1 for photographing underwater particles of water to be treated is provided near the entrance of a floc formation pond or a sedimentation pond. Such an underwater particle photographing system 1 has a collecting portion 2a for collecting the water to be treated from one end, a discharge portion 2c for discharging the water to be treated from the other end, and a photographing window 9 attached to extend substantially horizontally. A sampling pipe 2 having a photographing unit 2b provided therein, a background plate 10 provided at the bottom of the photographing unit 2b, and a drainage device 6 provided in a discharging unit 2c of the sampling pipe 2 for discharging the treated water of the sampling pipe 2; Is equipped with.

In addition, an airtight housing 22 is installed above the photographing section 2b of the sampling tube 2. Further, an air supply / exhaust device (water level adjusting mechanism) 5 for adjusting the air pressure of the imaging unit 2b of the sampling tube 2 is provided above the left end of the imaging unit 2b of the sampling tube 2.

By the way, in FIG. 1, reference numeral H1 indicates the water level in the floc formation pond or the sedimentation pond. The symbol H2 indicates the water level of the water to be treated in the imaging unit 2b of the sampling tube 2.

At the left end of the photographing section 2b of the sampling tube 2, the sampling tube 2
Level gauge 1 for measuring the water level H2 of the water to be treated in the image capturing section 2b
3, a water level for monitoring the presence of the water level H2 of the water to be treated in the imaging unit 2b of the sampling tube 2 within the set maximum and minimum values Hmax and Hmin of the water level gauge 13 A detector 37 is provided. Collection tube 2
A flowmeter 14 for measuring the flow velocity of the water to be treated in the sampling pipe 2 is provided in the discharge part 2c of the.

As the water level meter 13, a float level meter is used. In addition, the photographing window 9 of the photographing unit 2b of the sampling tube 2
A photographing device 15 for photographing the water to be treated is arranged outside the camera, and an illumination device 16 for illuminating the water to be treated in the sampling pipe 2 is provided between the photographing device 15 and the photographing window 9 in synchronization with the photographing device 15. Is provided. Further, a drainage device 6 is installed in the discharge part 2c of the sampling pipe 2. Further in the upper housing 22, a control unit 21 for controlling the supply and exhaust device 5, imaging device 15 and a lighting device 16, and de _Lee spray device 20 for outputting image information from the imaging device 15, the housing 22 A temperature control device 19 for adjusting the temperature of is installed. Of these, the control device 21 has an external terminal 2 for outputting image information to the outside.
5, an I / O unit 23 that controls the input / output of the control device 21, an operation panel 36 that inputs a set value, and a controller 24 that determines the control amount.

At both ends of the photographing section 2b in the sampling tube 2, rectifying plates 7 for rectifying the flow of the water to be treated in the sampling tube 2 are provided. At both ends of the imaging unit 2b of the sampling tube 2, a cleaning lid 12 is provided for directly cleaning the inside of the sampling tube 2 by hand.
Is provided.

Further, the sampling section 2a of the sampling tube 2 and the photographing section 2b
A cleaning device 1 for cleaning the inside of the sampling tube 2 in the discharge part 2c
1 is provided for each. As such a cleaning device 15, an ultrasonic cleaner, a water jet cleaner, or a wiper cleaner is used.

Next, the photographing device 15 will be described. As shown in FIG. 1, the photographing device 15 includes a photographing device 18 for photographing the treated water of the photographing portion 2b of the sampling tube 2, a zoom device 17 for enlarging the treated water of the photographing portion 2b, and a lighting device 16. And a photographing synchronization circuit 56 for synchronizing the photographing device 18. An industrial ITV camera is used as the camera 18.

The variable portion 3a is connected to the sampling portion 2a of the sampling tube 2. The variable portion 3a includes a base portion 3b fixed to an inlet portion of the sampling portion 2a of the sampling tube 2,
The base unit 3b includes a slide unit 3c that can move forward and backward by sliding, and a slide drive unit 3d that drives the slide unit 3c according to an instruction from the control device 21.

Next, the illumination device 16 will be described in detail with reference to FIG. Here, FIG. 2A shows an enlarged view of the P portion of FIG. 1, and FIGS. 2B and 2C show plan layout views of the lamp 26.

As shown in FIG. 2A, the lighting device 16
Is a lamp 26 that irradiates the underwater particles in the water to be processed flowing through the imaging unit 2b of the sampling tube 2, and prevents the light of the lamp 26 from leaking to the outside to prevent halation of light to the zoom device 17 of the imaging device 15. It has a hood 27 and a reflector 28 that reflects the light of the lamp 26. The photographing device 18 photographs the underwater particles in the photographing region 2d of the photographing unit 2b of the sampling tube 2 which is preset from the operation panel 36.

As the lamp 26, as shown in FIG. 2B, a circular lamp 26 having a circular opening 26a (hatched portion) in the center may be used. As shown in FIG. 2 (c),
A square opening 26a (hatched portion) may be provided in the center, and four linear lamps 26 arranged around the opening 26a may be used. The photographing device 15 and the lighting device 16 are surrounded by an enclosure 15a.

Next, the controller 24 will be described with reference to FIG. As shown in FIG. 3, the controller 24 includes a water level control circuit 35 for setting the water level H2 of the water to be treated in the photographing unit 2b of the sampling tube 2 to a set value, and the water to be treated in the photographing unit 2b of the sampling pipe 2. A flow rate control circuit 46 that sets the flow rate to a set value, an illumination control circuit 49 that controls the illumination device 16, an imaging control circuit 42 that controls the imaging device 15, and a temperature control circuit 47 that controls the temperature control device 19. A cleaning control circuit 50 for controlling the cleaning device 11,
A transmission / reception control circuit 48 for controlling transmission / reception of input / output information from the external terminal 25.

In FIG. 3, when the image information obtained from the photographing device 15 is transmitted to the peripheral device through the external terminal 25, the transmission / reception control circuit 48 not only stores the image information obtained from the photographing device 15. The image information obtained from the photographing device 15 is transmitted to the peripheral device at a constant cycle set from the operation panel 36.

It should be noted illumination device 16, imaging device 18, intake and exhaust device 5, the drainage device 6, de _Lee spray device 20, the cleaning device 1
1 and the temperature control device 19 can be started and stopped directly from the operation panel 36.

Next, the operation of this embodiment having such a configuration will be described.

First, the operation of maintaining the water level H2 of the imaging portion of the sampling tube at the set value will be described with reference to FIG.

FIG. 5 is an enlarged view of the Q portion of FIG. As shown in FIG. 5, the water to be treated is discharged from the collecting section 2a of the collecting tube 2 through the photographing section 2b and the discharging section 2c. During this time, the water level H2 of the water to be treated is measured by the water level meter 13 and the water level detector 37, and information from the water level meter 13 and the water level detector 37 is sent to the controller 24 via the I / O unit of the controller 21. Is sent to the water level control circuit 35.

It should be noted that the sampling tube 2 is previously set from the operation panel 36.
The minimum value Hmin and the maximum value Hmax of the water level H2 of the water to be treated of the image capturing unit 2b and the target water level Hsv of the water to be treated of the image capturing unit 2b of the sampling tube 2 are input, and these minimum values Hmin,
The maximum value Hmax and the water level target value Hsv are sent to the water level control circuit 35 of the controller 24.

Next, the control action of the water level control circuit 35 of the controller 24 will be described.

(1) First, the water level control circuit 35 of the controller 24
Calculates the water level H2 based on the information from the water level gauge 13.
However, the water level H2 and the water level set from the operation panel 36
When the air supply / exhaust device 5 is in operation, the comparison calculation with the target value Tsv is performed.
Interval T_DAnd whether to supply air or exhaust air. Note that
The difference between the water level H2 and the water level target value Tsv was previously determined by experiments.
And the operating time T_DDerive the relationship between and as a function,
Operating time T _DIs calculated. Also, the water level
If H2 is larger than the water level target value Tsv, the water level control
Air supply is instructed from the passage 35 to the air supply / exhaust device 5, and the water level H2
If it is smaller than the water level target value Tsv, the water level control circuit 35
The air supply / exhaust device 5 is instructed to exhaust. Air supply / exhaust device 5 supplies
If you notice, the air pressure in the space 2f of the imaging unit 2b of the sampling tube 2
Rises and the water level H2 falls. The air supply / exhaust device 5 exhausts
Then, the air pressure in the space 2f of the imaging unit 2b of the sampling tube 2 becomes low.
The water level H2 rises.

(2) Next, the water level control circuit 35 instructs the air supply / exhaust device 5 via the I / O unit 23 to perform air supply or exhaust for the calculated operating time T _D.
Further, as a feedback signal, the information from the water level gauge 13 is constantly input to the water level control circuit 35 of the controller 24 via the I / O unit. Water level H2 and water level target value Tsv
Until the difference between the values becomes a preset value, (1),
The action of (2) is repeated.

The water level control circuit 35 includes a water level detector 37.
The water level H2 can also be calculated based on the information from. The water level control circuit 35 determines whether the water level H2 obtained based on the information from the water level detector 37 is between the minimum value Hmin and the maximum value Hmax. The water level H2 is equal to or less than the minimum value Hmin or the maximum value Hmin. If it is higher than Hmax, the warning lamp 55 on the operation panel 36 is turned on. A warning sound may be emitted instead of the warning light 55. The water level control circuit 35 may determine whether the water level H2 is between the minimum value Hmin and the maximum value Hmax based on the water level H2 calculated based on the information of the water level gauge 13.

As described above, the photographing section 2 of the sampling tube 2
The water level H2 of the water to be treated in b is maintained at the set constant water level.

Further, by providing the straightening plates 7 at both ends of the inside of the photographing section 2b of the sampling tube 2, the water to be treated in the photographing section 2b of the sampling tube 2 is rectified, and the fluctuation of the water level H2 can be more effectively performed. Can be suppressed.

Next, the operation of setting the flow velocity of the water to be treated in the photographing section 2b of the sampling tube to the set value will be described with reference to FIG.

First, as shown in FIG. 3, the velocity of the water to be treated is measured by the velocity meter 14, and the information from the velocity meter 14 is I.
Flow rate control circuit 4 in the controller 24 via the / O unit.
Sent to 6. Further, the flow velocity target value Vt of the water to be treated of the image capturing unit 2b of the sampling tube 2 is input in advance from the operation panel 36 and sent to the flow velocity control circuit 46 of the controller 24.

Next, the control action of the flow velocity control circuit 46 of the controller 24 will be described.

(1) The flow velocity control circuit 46 calculates the flow velocity V1 based on the information from the flow velocity meter 14, and compares the calculated flow velocity V1 with the flow velocity target value Vt. When the calculated flow velocity V1 is larger than the flow velocity target value Vt,
The flow velocity control circuit 46 instructs the drainage device 6 to reduce the discharge amount so that the flow velocity V1 of the water to be treated in the imaging unit 2b of the sampling pipe 2 decreases. Further, when the calculated flow velocity V1 is smaller than the flow velocity target value Vt, the flow velocity control circuit 46 increases the discharge amount to the drainage device 6 so that the flow velocity of the water to be treated in the imaging unit 2b of the sampling tube 2 increases. Give instructions.

As described above, the flow velocity V1 is increased / decreased by increasing / decreasing the discharge amount of the drainage device 6 according to the instruction of the flow velocity control circuit 46 of the controller 24. According to the instruction, the flow velocity V1 may be increased / decreased by the air supply and exhaust of the air supply / exhaust device 5. That is, the controller 2
When the water level control circuit 35 of 4 instructs the air supply / exhaust device 5 to supply air, the air supply / exhaust device 5 supplies air. When the air supply / exhaust device 5 supplies air, the air pressure in the space 2f of the imaging unit 2b of the sampling tube 2 increases, and the water level H2 of the imaging unit 2b of the sampling tube 2 decreases.
When the water level H2 decreases, the flow velocity V1 of the imaging unit 2b of the sampling tube 2 increases. In addition, the water level control circuit 3 of the controller 24
5 instructs the air supply / exhaust device 5 to exhaust, the air supply / exhaust device 21
Exhausts. When the air supply / exhaust device 5 exhausts, the sampling tube 2
The air pressure in the space 2f of the imaging unit 2b of the
The water level H2 of the image capturing unit 2b rises. When the water level H2 rises, the flow velocity V1 of the imaging unit 2b of the sampling tube 2 decreases.

Further, as a feedback signal, the information from the flow velocity meter 14 is constantly input to the flow velocity control circuit 46 of the controller 24 via the I / O unit 23, and the difference between the calculated flow velocity V1 and the flow velocity target value Vt is calculated. Repeat (1) until it reaches a preset value.

As described above, the imaging unit 2 of the sampling tube 2
The flow velocity V1 of the water to be treated in b is maintained at the set constant flow velocity.

On the other hand, from the operation panel 36, the variable portion 3a
When the length of the I / O unit 23 is set, the set value is sent to the controller 21, and the controller 24 of the controller 21 causes the I / O unit 23 to
Drive instructions are given to the slide driving section 3d provided in the sampling section 2a of the sampling tube 2 via. The slide driving unit 3d drives the slide unit 3c of the variable portion 3a to move the variable portion 3a.
Change the length of to the set length. By changing the length of the variable portion 3a to the length set from the operation panel 36, it is possible to collect the water to be treated at the set depth in the floc formation pond or the sedimentation pond. As a result, the underwater particles can be photographed in a wide range of depths, and the problem when the underwater particles are not uniformly distributed in the water to be treated depending on the depth can be solved.

As described above, according to the embodiment, it is possible to set the water level and the flow velocity of the water to be treated in the photographing section 2b of the sampling tube 2 to the set values. As a result, clear underwater particles of the water to be treated can be photographed at all times.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 5, a drainage device 8 is provided at the right end of the sampling portion 2a of the sampling pipe 2, and the drainage device 8 is connected to a pump chamber 31 containing a pump motor 32 and a pump motor 32. Rotating shaft 8a and tip 8 of rotating shaft 8a
and an impeller 33 attached to b. Also,
The velocity meter 14 is attached to the sampling part 2 a of the sampling tube 2.

The other structure is substantially the same as that of the first embodiment shown in FIG. 5, the same parts as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 5, when increasing the flow velocity of the water to be treated in the photographing section 2b of the sampling tube 2, the flow velocity control circuit 46 of the controller 24 increases the rotation speed of the pump motor 32. When the rotation speed of the pump motor 32 increases, the rotation speed of the impeller 33 increases via the rotating shaft 8a, the discharge amount of the treated water from the discharge portion 2c of the sampling tube 2 increases, and the imaging unit of the sampling tube 2 increases. The flow velocity of the water to be treated in 2b is increased. When reducing the flow velocity of the water to be treated in the imaging unit 2b of the sampling pipe 2, the flow velocity control circuit 46 of the controller 24 reduces the rotation speed of the pump motor 32. When the rotation speed of the pump motor 32 decreases, the rotation speed of the impeller 33 decreases via the rotation shaft 8a, the discharge amount of the treated water from the discharge portion 2c of the sampling pipe 2 decreases, and the imaging unit of the sampling pipe 2 decreases. The flow velocity of the water to be treated in 2b decreases.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 6, the collecting pipe 2 has a collecting portion 2a for collecting water to be treated from one end, a discharging portion 2c having the other end closed and an opening 2g near the water surface, It has a photographing section 2b which extends in a substantially horizontal shape and to which a photographing window 9 is attached. Further, the discharge portion 2c is provided with an air lift tube 43, one end of which is attached to the opening 2g of the discharge portion 2c of the sampling tube 2 and the other end of which extends below the discharge portion 2c.
An air pump 4 provided outside the imaging unit 2b of the sampling tube 2
4 is connected to the other end of the air lift tube 43 via an air diffuser 45. The velocity meter 14 is attached to the sampling portion 2 a of the sampling tube 2.

The other structure is substantially the same as that of the first embodiment shown in FIG. 6, the same parts as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will be omitted.

When the flow velocity of the water to be treated in the image pickup section 2b of the sampling pipe 5 is increased, the flow velocity control circuit 46 of the controller 24 increases the air delivery amount of the air pump 44. When the amount of air delivered by the air pump 44 increases, the amount of treated water discharged from the air lift tube 43 increases, and the flow velocity of the treated water in the imaging unit 2b of the sampling tube 2 increases. When reducing the flow velocity of the water to be treated in the imaging unit 2b of the sampling tube 2, the flow velocity control circuit 46 of the controller 24 reduces the amount of air delivered by the air pump 44. When the air delivery amount of the air pump 44 decreases, the discharge amount of the treated water from the air lift tube 43 decreases, and the flow velocity of the treated water in the imaging unit 2b of the sampling tube 2 decreases.

Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIG.

In FIG. 7, the photographing device 15 includes a sampling tube 2
The illuminating device 15 is arranged outside the photographing window 9 attached to the photographing unit 2b, and the illumination device 15 is arranged outside the photographing window 9 of the sampling tube 2.

The illumination device 53 is a diffuser 38 for diffusing light.
, A ring illuminator 39, and a stroboscope 41 connected via a light guide 40.

The other structure is almost the same as that of the first embodiment shown in FIG. 7, the same parts as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 7, the illuminating device 53 can be installed side by side with the illuminating device 16 used in the first embodiment. With only the illuminating device 53, the illuminance of the water to be treated in the photographing section 2b of the sampling tube 2 can be increased. When it is insufficient, it is effective to obtain higher illuminance and to take clear pictures.

[0061]

As described above, according to the present invention, the water level and the flow velocity of the water to be treated in the photographing section of the sampling tube can be set to the set values. As a result, clear underwater particles of the water to be treated can be photographed at all times.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of an underwater particle imaging system according to the present invention.

FIG. 2 is a view showing an illuminating device of an underwater particle photographing system according to the present invention.

FIG. 3 is a diagram showing a controller of a controller of the underwater particle imaging system according to the present invention.

FIG. 4 is a diagram showing the water level in the imaging part of the sampling tube of the underwater particle imaging system according to the present invention.

FIG. 5 is an overall configuration diagram showing a second embodiment of an underwater particle photographing system according to the present invention.

FIG. 6 is an overall configuration diagram showing a third embodiment of an underwater particle imaging system according to the present invention.

FIG. 7 is an overall configuration diagram showing a fourth embodiment of an underwater particle photographing system according to the present invention.

[Explanation of symbols]

1 Shooting system 2 sampling tubes 3a Variable part 5 Air supply / exhaust device 6 drainage device 7 Current plate 8 drainage device 9 Shooting window 11 Cleaning device 13 Water gauge 14 Anemometer 15 Imaging device 16 Lighting equipment 21 Control device 37 Water level detector

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G03B 15/02 G03B 15/02 Z (72) Inventor Yuno Noshiro No. 1 Toshiba-cho, Fuchu-shi, Tokyo Stocks Company Toshiba Fuchu Works (72) Inventor Akira Hiramoto 1st Toshiba Town, Fuchu, Tokyo 1st Toshiba Fuchu Works, Ltd. (72) Inventor Masao Kaneko 1st Toshiba Town, Fuchu, Tokyo 1st Toshiba Works Fuchu, Ltd. F-term (reference) 2G051 AA90 AB20 AC11 CA04

Claims (5)

[Claims] 1. An underwater particle photographing system for photographing underwater particles of water to be treated, wherein the water to be treated is collected from one end and the water to be treated is discharged from the other end, and extends substantially horizontally, and a photographing window. A sampling pipe having a photographing part attached to the sampling pipe, a drainage device for discharging the treated water from the sampling pipe, a water level adjusting mechanism provided on the sampling pipe for adjusting the water level of the treated water, and attached to the sampling pipe, A water level gauge for measuring the water level of the treated water in the imaging part of the sampling pipe, a flow meter attached to the sampling pipe for measuring the flow velocity of the treated water in the sampling pipe, and placed outside the imaging window of the sampling pipe. , Which is installed outside the shooting window of the sampling tube and the shooting device that shoots the water to be treated, in synchronization with the shooting device,
A lighting device that illuminates the water to be treated in the sampling pipe, a control device that controls the drainage device, the water level adjustment mechanism, the imaging device, and the lighting device. Control the drainage device so that the flow velocity of the water to be treated takes the set value, and control the water level adjustment mechanism so that the water level of the treated water in the imaging part of the sampling tube takes the set value based on the information of the water level gauge. An underwater particle imaging system characterized by. 2. The underwater particle photographing system according to claim 1, wherein the water level adjusting mechanism is a supply / exhaust device which is provided in the sampling pipe and adjusts the air pressure of the water to be treated. 3. The underwater particle photographing system according to claim 1, wherein a current plate is provided in the sampling tube. 4. The underwater particle photographing system according to claim 1, wherein the sampling tube is provided with a cleaning device for cleaning the inside of the sampling tube. 5. The underwater particle photographing system according to claim 1, wherein the length of the sampling side of the sampling tube is variable.