KR101132387B1 - Chamber of measuring apparatus of water quality using camera, the measuring apparatus and the measuring method - Google Patents

Abstract

The measuring chamber of the water quality measuring apparatus using the camera of the present invention, a separate inner receiving space 420 for receiving the monitoring species in the measuring chamber 170 and the upper portion of the measuring chamber 170 and the inlet 402 and the outlet ( And a cap portion 400 having a 404 formed thereon, wherein at least one hole 422 is perforated in the side of the inner accommodating space 420. to be.

According to the configuration as described above, the present invention, since the hole 422 is formed in the inner receiving space 420, the downward flow of the measurement sample 100 is formed as a whole, so that the contact with the monitoring species is smooth and at the same time, Flow is also formed through the hole 422 so that bubbles may be discharged without accumulating in the inner accommodating space 420. In addition, by reducing the local pressure state (50 ~ 70mmAq) inevitably formed in the measurement chamber to create an environment similar to the natural state to induce the smooth activity of the monitoring species.

Chamber, Hall, Daphnia, Bubble, Camera, Water Quality Measurement, Surveillance

Description

CHAMBER OF MEASURING APPARATUS OF WATER QUALITY USING CAMERA, THE MEASURING APPARATUS AND THE MEASURING METHOD}

The present invention relates to a measuring chamber of a water quality measuring device using a camera, and to a water quality side apparatus and a water quality measuring method using the same. A measuring chamber, a measuring device and a measuring method.

In general, in order to detect harmful substances such as heavy metals and volatile organic compounds (VOCs) contained in water flowing through rivers, organisms that react precisely and sensitively to specific chemicals and complex hazardous chemicals Used as a watchdog. The water quality measurement method using these organisms has advantages such as faster operating speed, simpler structure, and excellent measurement capability than chemical sensors.

In particular, water fleas are widely used as surveillance species, and as the concentration of harmful substances increases, the swimming type (swimming speed, height, path, etc.) of the water fleas changes, and the amount of change is measured to check whether the water quality is contaminated.

More specifically, the water flea is put into the measurement chamber and analyzed by moving image with the camera 160 to measure the behavior pattern of the water flea, that is, swimming altitude, swimming speed, velocity distribution index, and fractal index, using several mathematical techniques. Determine the hazards of the river water.

1 is a flowchart of a biological monitoring device (Model: Toximeter) manufactured by BBE, Germany. The device was introduced for early warning of water pollution in national rivers (four rivers including the Han River).

In the conventional biomonitoring apparatus of FIG. 1, the measuring chamber 170 has a structure capable of sufficiently mixing the measuring sample 100 around the water flea to ensure reliability of the toxicity evaluation. Daphnia are also daylight, so any light must be blocked except for the illumination, such as the infrared light used for measurement. Therefore, due to the unique structure of the measurement chamber 170, if bubbles are introduced into the sample, they are not discharged smoothly and accumulate in the measurement chamber 170. This structure also affects the activity of daphnia because the chamber is sealed to make a local pressurized state (50-70 mmAq).

Originally, the measurement sample 100 may be supplied to the measurement chamber 170 together with the water flea input by the algae incubator 150 and the algae pump 152 by controlling only the temperature by the thermoelectric semiconductor 130. However, additional devices are needed to rule out the effects of bubbles, which hinder the measurement. That is, the measurement sample 100 is raised to a predetermined temperature (25 ° C.) in the preheater 110 to induce bubble generation in advance, and the bubble is removed using the bubble remover 120 and the bubble remove pump 122 via the sample pump 112. To the outside. After that, the temperature of the measurement sample 100 is again controlled to 20 ° C. by the subcooler 140 in the thermoelectric semiconductor 130.

Since the biological monitoring market is an unmanned telemetry device, the reliability of continuous measurement for a long time should be secured even if the seasonal change in the country or the physical environment of the river is annual. Since most of the measurement sites are remote, minor problems cause loss of emergency dispatch and equipment inspection if the biological monitoring device is not operating normally.

In particular, in the water flea image analysis using the CCD camera 160, bubble generation or bubble inflow in the measurement chamber 170 becomes a significant measurement disturbance factor. Therefore, in order to prevent bubble generation and bubble inflow as well as the measurement chamber 170, the sample pump 112, the CCD camera 160, devices such as the preheater 110, the bubble remover 120, and the bubble remove pump 122 are additionally added. It is necessary.

However, even when only a minute leak occurs in the preheater 110 installed at the suction side of the sample pump 112, bubbles are introduced by vacuum. If any of these additional devices do not operate normally, the measurement may be interrupted and measurement may stop if the malfunction persists.

Actually, the utilization rate (2007 ~ 2008) of FIG. 1 is 1.9 ~ 2.3% lower than that of the old biomonitoring device (product of ELEKTRON Co.), and the number of emergency checks in 2008 was 17 cases, while the impulse type was 17 cases. The biosensory market value of the city has nearly doubled to 44, and 52% of the 44 anomalies have been shut down due to the inflow of bubbles from the measuring chamber 170.

In addition, despite the lack of water quality, the velocity distribution index, which is one of the items of analysis of water flea behavior patterns, tends to be unstable and fairly irregular because bubbles in the measurement chamber 170 are temporarily recognized as water fleas. Here, the velocity distribution index is a percentage concept of the standard deviation between the average speed of 10 fleas and the speed of a single flea, and the closer the water flea speed is to 0%. Therefore, even if the biomonitoring apparatus of FIG. 1 is normally operated, there is a problem that bubble generation affects the reliability of the measurement data.

2 and 3 are valid data for 5 minutes showing the velocity distribution index of the water flea in the measurement chamber 170 of the H-point and C-point, which are the measurement target areas, respectively. Here, the horizontal axis represents the cumulative number of times measured for 5 minutes in 30 days. As can be seen from the above data, it can be seen that there is a lot of discontinuity, ie, noise, caused by bubbles. This noise phenomenon is of course an undesirable obstacle in water quality measurement.

The present invention provides a measuring chamber and a measuring apparatus using the same to form a hole in the measuring chamber to solve the above problems and to release the bubbles and to solve the local pressure that may affect the growth of the monitoring species; The purpose is to obtain a measurement method.

In order to achieve the above technical problem, the present invention provides a measuring chamber of a water quality measuring apparatus using a camera in which a hole is formed inside the measuring chamber.

The measuring chamber of the water quality measuring apparatus using the camera of the present invention includes a separate inner accommodation space for receiving a monitoring species inside the measuring chamber and a cap portion covering the upper portion of the measuring chamber and having an inlet and an outlet. The inner accommodation space is a measurement chamber of the water quality measurement apparatus using a camera, characterized in that one or more holes are drilled in the side surface and the lower surface is made of a mesh network. Surveillance species here are primarily daphnia but may be replaced by fish. On the other hand, the lower portion of the inner accommodation space is composed of a mesh network so that the measurement sample is discharged.

According to the above configuration, since a hole is formed in the inner accommodating space, a downward flow of the measurement sample is formed as a whole to facilitate contact with the monitoring species, and at the same time, a flow is formed even through the holes in the side, and bubbles are accumulated in the inner accommodating space. It is not discharged. In addition, by reducing the local pressure state (50 ~ 70mmAq) inevitably formed in the measurement chamber, it can create a similar environment to the natural state to induce the smooth activity of the monitoring species.

Wherein the hole is 0.8 to 1.5mm in diameter, the number is characterized in that 8 to 12.

According to the above configuration, bubbles can be removed while maintaining the existing downward flow in the inner receiving space. In other words, in order to ensure that the measured samples introduced into the inner receiving space can smoothly contact the measured fleas, the overall downdraft should not be changed. Therefore, by forming a diameter of 0.8 to 1.5mm as described above and the number of holes of 8 to 12 it is possible to realize the down flow of the measurement sample and to optimize the bubble discharge.

In addition, the positions of the holes are vertically divided evenly according to the number of holes vertically, and the left and right margins are 5 mm or more horizontally.

By the above configuration, it is possible to evenly discharge the air bubbles scattered in the inner receiving space to increase the accuracy of the measurement.

In addition, the inner surface or the outer surface of the inner accommodation space is characterized in that it further comprises a mesh network attached to cover the hole. Here, the mesh network is preferably 50 to 80 mesh. The unit mesh is the number of square grids in an area of 1 inch by 1 inch.

According to the above configuration, it is possible to prevent the water flea having a size of 1 to 2 mm smaller than the hole to escape.

In addition, the outlet is characterized in that the diameter is 5mm or more, or 5mm in diameter and formed in plurality.

Since the diameter of the conventional outlet is 1 mm, even if holes are formed in the side of the inner receiving space in the present invention, the effect of removing bubbles is halved unless bubbles are removed from the inlet, outlet, or flow path formed in the upper part of the measuring chamber. . That is, in the conventional discharge port and the discharge flow path, even if there is no back pressure element at the rear end, only the water escapes without bubbles being removed by the surface tension of the water or the bottleneck of the bubble. Therefore, bubbles may be removed through the surface tension by widening the diameter of the outlet by 5 mm or more or by forming a plurality of outlets having a diameter of 5 mm.

The cap portion of the measurement chamber further comprises a double cap portion having a temperature sensor portion for measuring the temperature, and a sensor flow passage through the inlet and the temperature sensor portion.

By forming a temperature sensor part in the cap part and adding a double cap part having a corrugated sensor flow path to take the measurement sample directly from the inlet to the temperature sensor part, the temperature of the measurement sample immediately before entering the inner accommodating space is measured. can do. Therefore, measurement samples can be measured under the same temperature conditions without being affected by other environmental changes.

Here, the double cap part is preferably a plastic material that can be tightly coupled to the cap part so that the measurement sample is not leaked from the sensor flow path formed in the double cap part. On the other hand, the cap is preferably metal for durability.

The water quality measurement apparatus using the camera of the present invention, a sample pump for introducing a measurement sample, and a heat conductor for measuring the temperature of the introduced measurement sample and adjusting the temperature to a specific temperature, and measuring the cultured algae at a specific temperature. An algae incubator having an algae pump to be introduced into the measuring chamber and a measuring chamber in which a hole is formed in the present invention for measuring the water quality of the measuring sample into which the algae is introduced, and the measurement for image analysis of the measuring sample introduced into the measuring chamber. Water quality measuring apparatus using a camera, characterized in that it comprises a camera provided in the front of the chamber.

Meanwhile, the thermoelectric semiconductor may further include an auxiliary cooler for assisting the cooling function.

Bird here means watch species and daphnia are commonly used. In addition, the specific temperature is appropriately 20 ℃ which is the optimum temperature of daphnia activity. The conventional thermoelectric semiconductor is a semiconductor using the Peltier effect. The Peltier effect is a phenomenon in which when two different metals are attached with two contacts and a potential difference is applied to both ends of the two metals, heat transfer occurs due to the movement of the potential at this time. Because it is composed only of electric circuit which has no simple structure, environmental friendliness, and no physical operation structure, there is little room for failure, so it has high reliability and is widely used in local coolers.

According to the configuration, in the water quality measurement apparatus using a camera, by removing the bubbles in the measurement chamber using a measuring chamber formed with a hole in the inner receiving space, additional equipment such as a conventional preheater, bubble remover, bubble removing pump, etc. are unnecessary. Do. Therefore, it is very economical, and it is possible to reduce the time and expense required when the additional equipment is broken.

On the other hand, the water quality measurement method using the camera of the present invention, the inflow step of introducing the measurement sample, the temperature control step of controlling the introduced measurement sample to a specific temperature and the monitoring species to put the monitoring species in the temperature controlled measurement sample Remove the bubble contained in the input step and the measuring sample is added to the monitoring species in the measuring chamber formed with the hole of the present invention, the bubble removing and measuring step of measuring the velocity distribution index of the monitoring species and the draining step of draining the measured measurement sample It is characterized by including.

In the inflow step of the sample pump is introduced into the measurement sample to be measured by a measuring device using a measuring chamber having an internal accommodation space in which the hole of the present invention is formed.

Thereafter, the temperature of the measurement sample introduced in the temperature control step is controlled to a specific temperature through a thermoelectric semiconductor or an auxiliary cooler to control the temperature at which the monitoring species is appropriate.

Thereafter, the surveillance species pre-cultured in the surveillance species input step is introduced into the temperature-controlled measurement sample using the algae pump.

Then, in the bubble removing and measuring step, bubbles are removed from the measuring chamber having the inner receiving space in which the hole of the present invention is formed, and the speed distribution index of the monitoring species is measured through image analysis using a camera. Therefore, in the present invention, since the bubble removing process is performed in the measurement chamber, a separate separate bubble removing step using additional equipment such as a conventional preheater, bubble remover and bubble remove pump is unnecessary.

On the other hand, the camera used in the above image analysis is conventionally a CCD camera, but the CCD camera erroneously misunderstands elements other than daphnia, for example, bubbles as daphnia. Therefore, the present invention is characterized by using a thermal imaging camera so that the body temperature, that is, far-infrared rays of the living organism can be used for image analysis. Thermal imaging cameras are displayed in color on the screen due to heat for living things and in black and white for nonliving creatures without heat. This prevents non-living elements from affecting image analysis.

According to the above configuration, since the present invention forms a hole in the inner accommodating space of the measuring chamber, a downward flow of the measuring sample is formed at the same time, and a flow is also formed through the holes on the side so that bubbles do not accumulate in the inner accommodating space. Can be discharged without

In addition, according to the above configuration, by reducing the local pressure state (50 ~ 70mmAq) inevitably formed in the measurement chamber can create a similar environment to the natural state to induce the smooth activity of the monitoring species.

In addition, according to the configuration described above, by using a thermal imaging camera it is possible to prevent other elements other than the organism affects the image analysis.

Hereinafter, the configuration of the present invention according to the accompanying drawings in more detail. Here, the reference numerals attached to each drawing are consistent, and therefore, the same reference numerals should be construed as having the same configuration and operation in different drawings.

4A is a perspective view illustrating a measurement chamber 170 of a conventional biomonitoring device.

In FIG. 4A, the cap 400 is covered on the upper part of the measuring chamber 170, and the flow direction of the introduced water flea 440 and the introduced measuring sample 100 is found in the inner accommodating space 420 of the measuring chamber 170. have. When the measurement sample 100 is introduced through the inlet 402, it passes through the lower mesh network through the water flea 440 and exits to the outlet 404. Since the water flea 440 is daylight, it moves along the illumination 430 such as infrared rays. This motion is analyzed by moving image through the camera 160 to analyze the velocity distribution index and the like to measure the contamination of the measurement sample 100.

On the other hand, the cap portion 400, a double cap portion 410 is formed with a sensor flow path 412 is formed to take the measurement sample 100 from one side of the inlet 402 to contact the temperature sensor. The temperature sensor may be provided outside the measuring chamber 170, but since the temperature change may occur while the measuring sample 100 reaches the measuring chamber 170, the cap 400 may be provided with a temperature sensor. Do.

However, when the measurement sample 100 including the bubble is introduced, such a conventional measuring chamber 170 is difficult to accurately measure because the activity of the water flea 440 may be disturbed due to the bubble or the bubble may be mistaken for the water flea 440. Do.

4B is a perspective view showing the measurement chamber 170 of the biological monitoring device in the present invention.

As shown in FIG. 4B, eight holes 422 are equally divided and drilled on both sides of the inner accommodating space 420. This structure can remove bubbles scattered in the measurement sample 100 through the holes 422 on both sides without affecting the overall downward flow of the measurement sample 100.

In addition, since the holes 422 are larger than the water fleas 440, the mesh network covers the holes 422 to prevent the water fleas 440 from escaping. Furthermore, at least one outlet 404 having a diameter larger than that of the existing outlet 404 is formed so that bubbles can escape through the surface tension. Furthermore, the conventional outlet 404 is expanded to a diameter of 5 mm, and two are formed to smoothly remove bubbles.

5 is an exploded perspective view illustrating the cap 400 of the measurement chamber 170 to which the double cap 410 is added.

As shown in FIG. 5, a sensor flow passage 412 through the inlet 402 and the temperature sensor 406 is formed in the double cap portion 410. The double cap part 410 is made of a plastic material to prevent the easy molding of the sensor flow path 412 and the leakage of the measurement sample 100. In addition, the fastening means 501 for fastening the cap 400 and the double cap 410 is formed, it is apparent that the fastening means 501 may be a screw form or may be an adhesive. On the other hand, the outlet 404 is fully expanded to have a diameter of 5 mm to smoothly remove bubbles, and two are formed.

6 is a flowchart of a biological monitoring apparatus using the measuring chamber 170 in which the hole 422 is formed in the present invention.

As shown in FIG. 6, since the bubbles are removed in the measurement chamber 170, additional devices such as the preheater 110, the bubble remover 120, and the bubble removal pump 122 required in the conventional biomonitoring apparatus of FIG. Not required. This prevents the measurement from being interrupted or stopped due to blistering or abnormal operation of the additional device, resulting in economic cost savings.

In more detail, when the sample pump 112 draws the measurement sample 100, the measurement sample 100 in the thermoelectric semiconductor 130 is adjusted to 20 ° C., which is an optimum temperature of the water flea activity. If the thermoelectric semiconductor 130 cannot be sufficiently cooled, the auxiliary cooler 140 operates to cool the measurement sample 100. Thereafter, the water flea 440 cultured in the algae incubator 150 is introduced into the measurement sample 100 by the algae pump 152. The measurement sample 100 into which the water flea 440 is introduced is introduced into the measurement chamber 170 through the inlet 402, and preparation for image analysis by the camera 160 is completed.

As a result, in the present invention, when the measuring chamber 170 in which the holes 422 are formed is used, additional equipment such as the bubble remover 120 may be omitted, and at the same time, the bubble removing effect may be enjoyed.

According to the flow chart of Figure 6 as a result of confirming that the bubble removal capability, while forcibly introducing the bubble, as a result, the measurement according to the present invention even without the preheater 110, bubble remover 120, bubble removal pump 122, etc. Bubbles in the chamber 170 were discharged smoothly. In addition, when the overall downward flow in the measurement chamber 170 is smoothly in contact with the water flea 440 without being inhibited, microparticles were introduced into the measurement chamber 170 to visualize the flow to check the smoothness, VOCs, Major harmful substances such as heavy metals and river samples were tested to confirm that the measured values were not different from those before remodeling.

7 and 8 are water fleas 440 in the measurement chamber 170 of the H-point and C-point, which are the measurement target regions, in the biological monitoring apparatus using the measurement chamber 170 in which the hole 422 of the present invention is formed. 5 minute valid data representing the velocity distribution index of.

As shown in FIGS. 7 and 8, when the measuring chamber 170 having the inner receiving space 420 in which the holes 422 of the present invention are formed is used, noise is reduced in the velocity distribution index. And the downward stabilization trend (10-20%) is clearly seen.

9 is a flowchart illustrating a method of measuring water quality using the measuring chamber of the present invention.

As shown, first, the measurement sample 100 to be measured is subjected to an inflow step 910 introduced by the sample pump 112. Since the temperature of the measurement sample 100 is high, since the temperature affects the activity rate of the monitoring species, the temperature control step 920 of cooling to a specific temperature, preferably 20 degrees Celsius if the monitoring species is flea 440 Rough Thereafter, the monitored species cultured in the algae incubator 150, etc. is subjected to the monitoring species input step 930 by using the algae pump 152 to the measurement sample 100 controlled to the specific temperature. Thereafter, the measuring sample 100 into which the monitoring species is introduced is introduced into the measuring chamber 170 through the inlet 402 formed in the cap 400 of the measuring chamber 170. The bubbles present in the introduced measurement sample 100 are discharged through the holes 422 formed in the inner accommodating space 420 and subjected to the bubble removing and measuring step 940 for analyzing the surveillance species. Therefore, it is possible to accurately analyze the image without causing disturbance of the surveillance species due to the accumulation of bubbles in the inner receiving space (420). Finally, a drainage step 950 for draining the measurement sample 100 through the outlet 404.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, additions, and changes can be made in the technical field of the present invention without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

1 is a flowchart of a biological monitoring device (Model: Toximeter) manufactured by BBE, Germany.

FIG. 2 and FIG. 3 are 5 minutes valid data showing the velocity distribution index of the water flea in the measurement chamber of the H-point and C-point, respectively, in the biomonitoring apparatus of FIG. 1.

4A is a perspective view showing a measurement chamber of a conventional biomonitoring device.

Figure 4b is a perspective view showing a measurement chamber of the biological monitoring device in the present invention.

5 is an exploded perspective view showing the cap portion of the measurement chamber to which the double cap portion is added in the present invention.

6 is a flowchart of a biomonitoring apparatus using a measuring chamber having a hole in the present invention.

7 and 8 are 5-minute effective data showing the velocity distribution index of the water flea in the measurement chamber of the H-point and C-point, respectively, as the measurement target area in the biological monitoring apparatus using the measurement chamber in which the hole is formed. .

9 is a flowchart illustrating a method of measuring water quality using the measuring chamber of the present invention.

<Description of symbols for important parts of the drawings>

100: measurement sample 110: preheater

112: sample pump 120: bubble remover

122: bubble removing pump 130: thermoelectric semiconductor

140: auxiliary cooler 150: algae incubator

152: tidal pump 160: camera

170: measuring chamber 400: cap

402: inlet 404: outlet

406: temperature sensor portion 410: double cap portion

412: sensor euro 420: internal accommodation space

422: hall 430: illumination

440: water flea 501: fastening means

Claims (16)

An internal accommodation space 420 in which the monitoring species is received in the measurement chamber 170 and the measurement sample 100 is introduced and discharged, and A cap portion 400 covering an upper portion of the measurement chamber 170 and having a plurality of inlets 402 and a plurality of outlets 404 having a diameter of 5 mm or more, The inner accommodation space 420 has one or more holes 422 perforated on the side, and a mesh network covering the holes is attached, and a lower surface of the inner accommodation space 420 measures the water quality measuring apparatus using a camera. chamber. The method according to claim 1, The hole 422 is a measuring chamber of the water quality measurement apparatus using a camera, characterized in that the diameter of 0.8 to 1.5mm. The method according to claim 1 or 2, The measuring chamber of the water quality measuring apparatus using a camera, characterized in that the number of the holes 422 is 8 to 12. The method according to claim 1 or 2, The hole 422 is equally divided vertically according to the number of holes 422, and horizontally the left and right margins of the measurement chamber of the water quality measuring apparatus using a camera, characterized in that more than 5mm. The method according to claim 1 or 2, The mesh network covering the hole is measured chamber of the water quality measurement apparatus using a camera, characterized in that attached to the inner surface or the outer surface of the side of the inner receiving space (420). The method according to claim 5, The mesh network is a measuring chamber of the water quality measurement apparatus using a camera, characterized in that 50 to 80 mesh. delete The method according to claim 1 or 2, The outlet 404 is a measuring chamber of the water quality measurement apparatus using a camera, characterized in that the diameter of 5mm or more. The method according to claim 1 or 2, The cap 400 is, A temperature sensor unit 406 for temperature measurement, Measuring chamber of the water quality measurement apparatus using a camera, characterized in that it further comprises a double cap portion 410 is formed with a sensor flow passage 412 connecting the inlet 402 and the temperature sensor unit 406. A sample pump 112 for introducing the measurement sample 100, A thermoelectric semiconductor 130 for measuring the temperature of the introduced measurement sample 100 and adjusting the temperature to a specific temperature; Algae incubator 150 for culturing algae to be introduced into the temperature-controlled measurement sample 100, An algae pump 152 for introducing algae cultured from the algae incubator 150 into the temperature-controlled measurement sample 100 into the measurement sample 100; A measuring chamber 170 in which the hole 422 of claim 1, into which the measuring sample 100 into which the algae is introduced, is formed, and Water quality measuring apparatus using a camera, characterized in that it comprises a camera (160) provided in front of the measuring chamber 170 for the image analysis of the measuring sample (100) introduced into the measuring chamber (170). The method according to claim 10, The camera 160 is a water quality measurement apparatus using a camera, characterized in that the thermal imaging camera. Inflow step 910 for introducing the measurement sample 100, A temperature control step 920 of controlling the introduced measurement sample 100 at a specific temperature; Monitoring species input step (930) for inputting the monitoring species to the temperature-controlled measurement sample 100, Bubble removal and measurement step 940 to remove the bubbles contained in the measurement sample in which the monitoring species is inserted in the measuring chamber in which the hole of claim 1 is formed and to measure the speed distribution index of the monitoring species with the camera 160; Water quality measurement method using a camera, characterized in that it comprises a drainage step (950) for draining the measured measurement sample (100). The method according to claim 12, The temperature control step (920) is a water quality measurement method using a camera, characterized in that for controlling the temperature of the measurement sample 100 using the thermoelectric semiconductor (130). The method according to claim 12 or 13, The surveillance species is a water flea (440) water quality measurement method using a camera, characterized in that. The method according to claim 12 or 13, The camera 160 is a water quality measuring method using a camera, characterized in that the thermal imaging camera. 16. The method of claim 15, The camera 160 is a water quality measuring method using a camera, characterized in that the thermal imaging camera.

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