A water quality detection system for environmental assessment

Abstract

The present invention relates to the technical field of water quality detection, and in particular to a water quality detection system for environmental evaluation, comprising an acquisition module, a first processing module, a detection module, a data processing module, a second processing module and an analysis module. Whether the water quality is qualified is determined by obtaining the refractive index of each water sample and the intensity of transmitted light. The preset sampling interval and the number of water samples obtained are adjusted based on the detection result, the water quality detection procedure is simplified, and the detection efficiency of the water quality is improved while ensuring the detection accuracy of the water quality.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality detection, and in particular to a water quality detection system for environmental evaluation. Background Art

[0002] Water is the source of life. Human beings cannot live without water in their daily life and production activities. The quality of drinking water is closely related to human health. Water quality testing means first taking samples with a sampler, and then testing the water quality with a specific tester to obtain the water quality information of the tested water.

[0003] Testing the water quality of natural water bodies such as rivers, lakes, and oceans and timely understanding of water quality change trends can provide a basis for environmental protection and governance.

[0004] Carry out real-time monitoring of the water quality at the sewage treatment plant’s inlet, outlet and treatment process, optimize the treatment process and ensure that discharge meets the standards.

[0005] Monitoring water quality in industrial production processes can prevent equipment damage and product quality degradation caused by water quality problems.

[0006] Chinese Patent Publication No.: CN116087115A discloses a method for rapid detection of river and lake water quality in a complex environment. The method obtains spectral data of different water areas based on a water quality monitor. The spectral data includes an ambient light signal and a water area light signal. The detection steps include: collecting ambient light signals and water area light signals, calculating and obtaining a first water body spectral reflectance, pre-processing the first water body spectral reflectance, obtaining a second water body spectral reflectance, collecting water quality index data of different water areas, dividing them into a modeling set and a verification set, using a competitive adaptive reweighting algorithm to extract characteristic variables in the modeling set, establishing an inversion model based on the characteristic variables, using the inversion model to invert the verification set and obtain a predicted value; using an evaluation parameter to evaluate the accuracy of the inversion model. If the evaluation parameter reaches a corresponding threshold, it indicates that the predicted value is close to the true value, and water quality detection is achieved. It can be seen that the above technical solution has the following problems: the water quality detection process is complicated, which affects the water quality detection efficiency. Summary of the invention

[0007] To this end, the present invention provides a water quality detection system for environmental evaluation, so as to overcome the problem in the prior art that the water quality detection process is complicated and affects the water quality detection efficiency.

[0008] To achieve the above object, the present invention provides a water quality detection system for environmental assessment, comprising:

[0009] A collection module, which is used to obtain a number of water samples based on a preset sampling interval;

[0010] A first processing module, which is used to perform preliminary processing on each water sample, wherein the preliminary processing includes removing solid particles in the water sample using a sieve with a preset mesh number;

[0011] A detection module, which is used to detect the water sample using a laser light source, and obtain the intensity and refractive index of the transmitted light of the laser light source through the water sample;

[0012] A data processing module, which is used to screen out abnormal data of each intensity and each refractive index obtained by the detection module based on a cleaning threshold, and store each data after the screening;

[0013] A second processing module, used for determining the light transmittance of the corresponding water sample based on the intensity of the transmitted light output by the data processing module;

[0014] An analysis module, which is used to determine whether the water quality is qualified based on the average transmittance and average refractive index of each water sample, includes:

[0015] The water quality is judged to be qualified and a notification message indicating that the water quality is qualified is issued, or the transmittance difference is determined based on the transmittance of each water sample, and a corresponding processing method is generated based on the transmittance difference, the processing method includes adjusting the preset sampling interval, the number of water samples acquired by the acquisition module, or the cleaning threshold of the data processing module to the corresponding value, and after completing the adjustment of the preset sampling interval, the number of water samples acquired, or the cleaning threshold, determining whether the water quality is qualified based on the re-acquired average transmittance; when the average transmittance is less than or equal to the first preset average transmittance, the water quality is judged to be unqualified, and a notification message indicating that the water quality is abnormal is issued; when the average transmittance is greater than the first preset average transmittance, the water quality is judged to be qualified, and a notification message indicating that the water quality is qualified is issued.

[0016] Furthermore, the analysis module is used to determine whether the water quality is qualified based on the average light transmittance, including:

[0017] If the average light transmittance is greater than the second preset average light transmittance, the water quality is determined to be qualified, and a notification message of the qualified water quality is issued;

[0018] If the average light transmittance is less than or equal to the second preset average light transmittance and greater than the first preset average light transmittance, determining whether the water quality is qualified based on the average refractive index of each water sample;

[0019] If the average light transmittance is less than or equal to the first preset average light transmittance, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference.

[0020] Furthermore, the analysis module is used to determine whether the water quality is qualified based on the average refractive index of each water sample, including:

[0021] If the average refractive index is less than or equal to the preset average refractive index, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference;

[0022] If the average refractive index is greater than the preset average refractive index, the preset mesh number of the screen is adjusted to a corresponding value based on the average refractive index.

[0023] Further, the analysis module is used to adjust the preset mesh size of the sieve to a corresponding value based on the average refractive index, wherein:

[0024] The increase in the preset mesh count based on the average refractive index is proportional to the average refractive index.

[0025] Furthermore, the analysis module is used to generate a corresponding processing method based on the light transmittance difference, including:

[0026] To determine the transmittance difference, solve the variance of the transmittance of each sample, and obtain the transmittance difference;

[0027] If the transmittance difference is less than or equal to the first preset difference, adjusting the preset sampling interval to a corresponding value based on the transmittance difference;

[0028] If the light transmittance difference is less than or equal to the second preset difference and greater than the first preset difference, a corresponding processing method is generated based on the number of water samples;

[0029] If the transmittance difference is greater than the second preset difference, the cleaning threshold for filtering out abnormal data is adjusted to a corresponding value based on the number of water samples.

[0030] Furthermore, the analysis module is used to adjust the preset sampling interval to a corresponding value based on the light transmittance difference, wherein:

[0031] The increase range of the preset sampling interval determined based on the light transmittance difference is inversely proportional to the light transmittance difference.

[0032] Furthermore, the analysis module is used to generate corresponding processing methods based on the number of water samples, including:

[0033] If the number of water samples is less than or equal to the preset detection number, the cleaning ratio is determined based on the data volume of each data screened out by the data processing module, and the number of water samples obtained is adjusted to a corresponding value based on the cleaning ratio;

[0034] If the number of water samples is greater than the preset detection number, the water quality is judged to be unqualified and a notification message of abnormal water quality is issued.

[0035] Furthermore, the analysis module is used to determine the cleaning ratio based on the data volume of each data screened by the data processing module, and adjust the number of water samples obtained to a corresponding value based on the cleaning ratio, wherein:

[0036] The ratio of the amount of each data screened out by the acquired data processing module to the total amount of each intensity and each refractive index data output by the detection module is determined as the cleaning ratio;

[0037] The number of water samples obtained based on the cleaning ratio increases in direct proportion to the cleaning ratio.

[0038] Further, the analysis module is used to adjust the cleaning threshold for filtering out abnormal data to a corresponding value based on the number of water samples, wherein:

[0039] The cleaning threshold determined based on the number of water samples is reduced inversely proportional to the number of water samples.

[0040] Compared with the prior art, the beneficial effects of the present invention lie in that the water quality is judged by obtaining the refractive index of each water sample and the intensity of the transmitted light, the preset sampling interval and the number of water samples obtained are adjusted based on the detection results, a small amount of water sample data is used to detect the water quality, and the water quality detection procedure is streamlined, thereby improving the detection efficiency of the water quality while ensuring the accuracy of the water quality detection.

[0041] Furthermore, based on the statistical results, the average light transmittance is determined, and whether the water quality is qualified is determined based on the average light transmittance. When the average light transmittance is less than or equal to the second preset average light transmittance and greater than the first preset average light transmittance, the average refractive index is used to determine whether the water quality is qualified. The average refractive index characterizes the filtration condition of the water sample. When the average refractive index is greater than the preset average refractive index, the abnormal filtration of the water sample causes the presence of insoluble particles such as mud and sand, which affects the detection of the intensity of the transmitted light. At this time, the preset mesh size of the screen is adjusted to ensure the filtration of insoluble particles, thereby improving the detection accuracy of water quality.

[0042] Furthermore, a corresponding processing method is generated based on the light transmittance difference. The light transmittance difference characterizes the difference in light transmittance of each water sample. When the light transmittance difference is less than or equal to the first preset difference, the deviation of each water sample is too low. At this time, the preset sampling interval for the water sample is too low, resulting in too one-sided detection of water quality. In this case, the preset sampling interval is increased to ensure that the acquired water samples can fully show the specific conditions of the water area to be detected; when the light transmittance difference is greater than the second preset difference, the difference between each water sample is too large. At this time, abnormal data affects the determination result of water quality due to unqualified screening of abnormal data. In this case, the cleaning threshold of abnormal data is adjusted to improve the detection accuracy of water quality, thereby further improving the detection efficiency of water quality.

[0043] Furthermore, when the transmittance difference is less than or equal to the second preset difference and greater than the first preset difference, the specific situation of the water area cannot be determined at this time. The corresponding processing method is generated in combination with the number of water samples. When the number of water samples is less than or equal to the preset detection number, the specific situation of the water quality in the water area cannot be accurately judged due to the low number of water samples obtained. At this time, the number of water samples obtained is increased, the actual operating parameters of the acquisition module are adaptively adjusted, a small amount of water sample data is used to detect water quality, and the water quality detection procedure is streamlined; when the number of water samples is greater than the preset detection number, the water quality detection process is qualified at this time, and the average transmittance is too low due to abnormal water quality, and a notification message of abnormal water quality is issued. The operating parameters of the acquisition module are automatically adjusted according to the detection data, and the processing method of the detected data is adjusted to ensure that the specific situation of the water quality is accurately determined, further improving the detection efficiency of water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A module block diagram of a water quality detection system for environmental assessment according to an embodiment of the present invention;

[0045] Figure 2 This is a logic decision diagram for determining whether water quality is qualified based on average light transmittance according to an embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0048] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0049] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] See also Figure 1 as well as Figure 2 As shown, they are respectively a module block diagram of a water quality detection system for environmental evaluation according to an embodiment of the present invention, and a logic determination diagram for determining whether the water quality is qualified based on the average light transmittance; a water quality detection system for environmental evaluation according to an embodiment of the present invention comprises:

[0051] A collection module, which is used to obtain a number of water samples based on a preset sampling interval;

[0052] A first processing module, which is used to perform preliminary processing on each water sample, wherein the preliminary processing includes removing solid particles in the water sample using a sieve with a preset mesh number;

[0053] A detection module, which is used to detect the water sample using a laser light source, and obtain the intensity and refractive index of the transmitted light of the laser light source through the water sample;

[0054] A data processing module, which is used to screen out abnormal data of each intensity and each refractive index obtained by the detection module based on a cleaning threshold, and store each data after the screening;

[0055] A second processing module, used for determining the light transmittance of the corresponding water sample based on the intensity of the transmitted light output by the data processing module;

[0056] An analysis module, which is used to determine whether the water quality is qualified based on the average transmittance and average refractive index of each water sample, includes:

[0057] The water quality is judged to be qualified and a notification message indicating that the water quality is qualified is issued, or the transmittance difference is determined based on the transmittance of each water sample, and a corresponding processing method is generated based on the transmittance difference, the processing method includes adjusting the preset sampling interval, the number of water samples acquired by the acquisition module, or the cleaning threshold of the data processing module to the corresponding value, and after completing the adjustment of the preset sampling interval, the number of water samples acquired, or the cleaning threshold, determining whether the water quality is qualified based on the re-acquired average transmittance; when the average transmittance is less than or equal to the first preset average transmittance, the water quality is judged to be unqualified, and a notification message indicating that the water quality is abnormal is issued; when the average transmittance is greater than the first preset average transmittance, the water quality is judged to be qualified, and a notification message indicating that the water quality is qualified is issued.

[0058] Specifically, there is no limitation on the specific method of obtaining the laser light source, and it can be obtained through a stable, specific wavelength light emitting diode or laser light source module. It can be understood that it can output light with stable intensity and wavelength, which will not be elaborated here.

[0059] Specifically, the specific process of the detection module obtaining the intensity of the transmitted light of the laser light source through the water sample is not limited. The laser light source with a specific light intensity can emit light to irradiate the water sample processed by the first processing module. The substances in the water sample interact with the incident light emitted by the laser light source to generate transmitted light. The high-precision optical sensor receives the transmitted light, and the photoelectric conversion element inside the optical sensor obtains the intensity of the transmitted light, filters and performs noise reduction processing on the light intensity to reduce interference and noise. The detection module outputs the light intensity after filtering and noise reduction processing, which will not be repeated here.

[0060] Specifically, the method for obtaining the transmittance of the corresponding water sample is to solve the ratio of the intensity of the transmitted light of the corresponding water sample to the light intensity of the laser light source to obtain the transmittance of the corresponding water sample, which will not be repeated here.

[0061] Specifically, there is no limitation on the method of obtaining the refractive index of the corresponding water sample, and the refractive index of each water sample can be measured by an interferometer or a spectrophotometer. This is the prior art and will not be described in detail.

[0062] Specifically, a number of water samples are obtained at a sampling interval as test samples for water quality testing;

[0063] Specifically, the water quality is judged by the refractive index and the intensity of the transmitted light of each water sample. The preset sampling interval and the number of water samples obtained are adjusted based on the test results. A small amount of water sample data is used to test the water quality, and the water quality testing procedure is streamlined. While ensuring the accuracy of water quality testing, the efficiency of water quality testing is improved.

[0064] Specifically, the analysis module is used to determine whether the water quality is qualified based on the average light transmittance, including:

[0065] If the average light transmittance is greater than the second preset average light transmittance, the water quality is determined to be qualified, and a notification message of the qualified water quality is issued;

[0066] If the average light transmittance is less than or equal to the second preset average light transmittance and greater than the first preset average light transmittance, determining whether the water quality is qualified based on the average refractive index of each water sample;

[0067] If the average light transmittance is less than or equal to the first preset average light transmittance, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference.

[0068] Specifically, the first preset average light transmittance is selected within the interval [0.3, 0.6], and the second preset average light transmittance is selected within the interval [0.78, 0.82].

[0069] Specifically, the analysis module is used to determine whether the water quality is qualified based on the average refractive index of each water sample, including:

[0070] If the average refractive index is less than or equal to the preset average refractive index, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference;

[0071] If the average refractive index is greater than the preset average refractive index, the preset mesh number of the screen is adjusted to a corresponding value based on the average refractive index.

[0072] Specifically, the preset average refractive index Z0 is selected within the interval [1.3335, 1.3345].

[0073] Specifically, based on statistical results, the average light transmittance is determined, and whether the water quality is qualified is determined based on the average light transmittance. When the average light transmittance is less than or equal to the second preset average light transmittance and greater than the first preset average light transmittance, the average refractive index is used to determine whether the water quality is qualified. The average refractive index characterizes the filtration condition of the water sample. When the average refractive index is greater than the preset average refractive index, the abnormal filtration of the water sample causes the presence of insoluble particles such as mud and sand, which affects the detection of the intensity of the transmitted light. At this time, the preset mesh size of the screen is adjusted to ensure the filtration of insoluble particles, thereby improving the detection accuracy of water quality.

[0074] Specifically, the analysis module is used to adjust the preset mesh size of the sieve to a corresponding value based on the average refractive index, wherein:

[0075] The increase in the preset mesh count based on the average refractive index is proportional to the average refractive index.

[0076] In this embodiment, optionally,

[0077] Comparing the average refractive index with a first preset refractive index comparison threshold and a second preset refractive index comparison threshold;

[0078] If the average refractive index is less than or equal to the first preset refractive index comparison threshold, adjusting the preset mesh number of the screen to 1.11 times the initial preset mesh number;

[0079] If the average refractive index is less than or equal to the second preset refractive index comparison threshold and greater than the first preset refractive index comparison threshold, adjusting the preset mesh number of the screen to 1.18 times the initial preset mesh number;

[0080] If the average refractive index is greater than the second preset refractive index comparison threshold, adjusting the preset mesh number of the screen to 1.26 times the initial preset mesh number;

[0081] The first preset refractive index comparison threshold is 1.1Z0, and the second preset refractive index comparison threshold is 1.3Z0.

[0082] Specifically, the analysis module is used to generate a corresponding processing method based on the light transmittance difference, including:

[0083] To determine the transmittance difference, solve the variance of the transmittance of each sample, and obtain the transmittance difference;

[0084] If the transmittance difference is less than or equal to the first preset difference, adjusting the preset sampling interval to a corresponding value based on the transmittance difference;

[0085] If the light transmittance difference is less than or equal to the second preset difference and greater than the first preset difference, a corresponding processing method is generated based on the number of water samples;

[0086] If the transmittance difference is greater than the second preset difference, the cleaning threshold for filtering out abnormal data is adjusted to a corresponding value based on the number of water samples.

[0087] Specifically, the first preset difference amount C1 is selected within the interval [0.04P0, 0.09P0], the second preset difference amount C2 is selected within the interval [0.25P0, 0.64P0], and P0 is the average value of each water sample.

[0088] Specifically, the data processing module screens out abnormal data of the intensities and refractive indices obtained by the detection module in a specific manner by checking the adjacent data points for each data point, and if the difference between a data point and its adjacent data points exceeds a set cleaning threshold, it is determined as an abnormal value.

[0089] Specifically, the cleaning threshold may include a refraction cleaning threshold for screening out abnormal data in each refractive index and a transmittance cleaning threshold for screening out abnormal data in each transmittance. The refraction cleaning threshold can determine the data of 3 times the calculated mean of each historical refractive index as the refraction cleaning threshold, and the transmittance cleaning threshold can determine the data of the upper quartile of each historical transmittance plus 1.5 times the interquartile range as the transmittance cleaning threshold.

[0090] Specifically, a corresponding processing method is generated based on the light transmittance difference. The light transmittance difference characterizes the difference in light transmittance of each water sample. When the light transmittance difference is less than or equal to the first preset difference, the deviation of each water sample is too low. At this time, the preset sampling interval for the water sample is too low, resulting in too one-sided detection of water quality. In this case, the preset sampling interval is increased to ensure that the acquired water samples can fully show the specific conditions of the water area to be detected. When the light transmittance difference is greater than the second preset difference, the difference between each water sample is too large. At this time, abnormal data affects the determination result of water quality due to failure in screening out abnormal data. In this case, the cleaning threshold of abnormal data is adjusted to improve the detection accuracy of water quality, thereby further improving the detection efficiency of water quality.

[0091] Specifically, the analysis module is used to adjust the preset sampling interval to a corresponding value based on the light transmittance difference, wherein:

[0092] The increase range of the preset sampling interval determined based on the light transmittance difference is inversely proportional to the light transmittance difference.

[0093] In this embodiment, optionally,

[0094] Comparing the light transmittance difference with a first preset light transmittance comparison threshold and a second preset light transmittance comparison threshold;

[0095] If the transmittance difference is less than or equal to the first preset transmittance comparison threshold, the preset sampling interval is adjusted to 1.3 times the initial preset sampling interval;

[0096] If the transmittance difference is less than or equal to the second preset transmittance comparison threshold and greater than the first preset transmittance comparison threshold, adjusting the preset sampling interval to 1.2 times the initial preset sampling interval;

[0097] If the transmittance difference is greater than the second preset transmittance comparison threshold, the preset sampling interval is adjusted to 1.1 times the initial preset sampling interval;

[0098] The first preset light transmittance comparison threshold is 0.2C1, and the second preset light transmittance comparison threshold is 0.8C1.

[0099] Specifically, the analysis module is used to generate corresponding processing methods based on the number of water samples, including:

[0100] If the number of water samples is less than or equal to the preset detection number, the cleaning ratio is determined based on the data volume of each data screened out by the data processing module, and the number of water samples obtained is adjusted to a corresponding value based on the cleaning ratio;

[0101] If the number of water samples is greater than the preset detection number, the water quality is judged to be unqualified and a notification message of abnormal water quality is issued.

[0102] Specifically, the preset detection number N0 is selected within the interval [12, 20].

[0103] Specifically, when the transmittance difference is less than or equal to the second preset difference and greater than the first preset difference, the specific situation of the water area cannot be determined at this time. The corresponding processing method is generated in combination with the number of water samples. When the number of water samples is less than or equal to the preset detection number, the specific situation of the water quality in the water area cannot be accurately judged due to the low number of water samples obtained. At this time, the number of water samples obtained is increased, the actual operating parameters of the acquisition module are adaptively adjusted, a small amount of water sample data is used to detect water quality, and the water quality detection procedure is streamlined; when the number of water samples is greater than the preset detection number, the water quality detection process is qualified at this time, and the average transmittance is too low due to abnormal water quality, and a notification message of abnormal water quality is issued. The operating parameters of the acquisition module are automatically adjusted according to the detection data, and the processing method of the detected data is adjusted to ensure that the specific situation of the water quality is accurately determined, further improving the detection efficiency of water quality.

[0104] Specifically, the analysis module is used to determine the cleaning ratio based on the data volume of each data screened by the data processing module, and adjust the number of water samples obtained to a corresponding value based on the cleaning ratio, wherein:

[0105] The ratio of the amount of each data screened out by the acquired data processing module to the total amount of each intensity and each refractive index data output by the detection module is determined as the cleaning ratio;

[0106] The number of water samples obtained based on the cleaning ratio increases in direct proportion to the cleaning ratio.

[0107] In this embodiment, optionally,

[0108] Comparing the cleaning ratio with the first preset cleaning ratio and the second preset cleaning ratio;

[0109] If the cleaning ratio is less than or equal to the first preset cleaning ratio, the number of water samples acquired by the collection module is adjusted to 1.13 times the initial number of water samples;

[0110] If the cleaning ratio is less than or equal to the second preset cleaning ratio and greater than the first preset cleaning ratio, the number of water samples acquired by the collection module is adjusted to 1.25 times the initial number of water samples;

[0111] If the cleaning ratio is greater than the second preset cleaning ratio, the number of water samples acquired by the collection module is adjusted to 1.32 times the initial number of water samples;

[0112] The first preset cleaning ratio is 0.25, and the second preset cleaning ratio is 0.33.

[0113] Specifically, the analysis module is used to adjust the cleaning threshold for filtering out abnormal data to a corresponding value based on the number of water samples, wherein:

[0114] The cleaning threshold determined based on the number of water samples is reduced inversely proportional to the number of water samples.

[0115] In this embodiment, optionally,

[0116] Comparing the quantity of the water sample with a first quantity comparison threshold and a second quantity comparison threshold;

[0117] If the number of water samples is less than or equal to the first number comparison threshold, the cleaning threshold is adjusted to 0.92 times the initial cleaning threshold;

[0118] If the number of water samples is less than or equal to the second number comparison threshold and greater than the first number comparison threshold, the cleaning threshold is adjusted to 0.81 times the initial cleaning threshold;

[0119] If the number of water samples is greater than the second number comparison threshold, the cleaning threshold is adjusted to 0.74 times the initial cleaning threshold;

[0120] The first quantity comparison threshold is 0.6N0, and the second quantity comparison threshold is 1.3N0.

[0121] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0122] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water quality detection system for environmental assessment, characterized in that: include: A collection module, which is used to obtain a number of water samples based on a preset sampling interval; A first processing module, which is used to perform preliminary processing on each water sample, wherein the preliminary processing includes removing solid particles in the water sample using a sieve with a preset mesh number; A detection module, which is used to detect the water sample using a laser light source, and obtain the intensity and refractive index of the transmitted light of the laser light source through the water sample; A data processing module, which is used to screen out abnormal data for each intensity and each refractive index obtained by the detection module based on a cleaning threshold, and store each data after screening out; the specific method of the data processing module to screen out abnormal data for each intensity and refractive index obtained by the detection module is to check its adjacent data points for each data point, and if the difference between a certain data point and the adjacent data point exceeds a set cleaning threshold, it is determined as an abnormal value; the cleaning threshold includes a refraction cleaning threshold for screening out abnormal data in each refractive index and a transmittance cleaning threshold for screening out abnormal data in each transmittance; A second processing module, used for determining the light transmittance of the corresponding water sample based on the intensity of the transmitted light output by the data processing module; The analysis module is used to determine whether the water quality is qualified based on the average light transmittance of each water sample, including: Determine that the water quality is qualified and issue a notification message indicating that the water quality is qualified, or determine a transmittance difference based on the transmittance of each water sample, and generate a corresponding processing method based on the transmittance difference, the processing method including adjusting the preset sampling interval, the number of water samples acquired by the acquisition module, or the cleaning threshold of the data processing module to a corresponding value, and after completing the adjustment of the preset sampling interval, the number of water samples acquired, or the cleaning threshold, determine whether the water quality is qualified based on the re-acquired average transmittance, if the average transmittance is less than or equal to a first preset average transmittance, determine that the water quality is unqualified, and issue a notification message indicating that the water quality is abnormal, and if the average transmittance is greater than the first preset average transmittance, determine that the water quality is qualified, and issue a notification message indicating that the water quality is qualified; The analysis module is used to solve the variance of the light transmittance of each sample to obtain the light transmittance difference; If the transmittance difference is less than or equal to the first preset difference, adjusting the preset sampling interval to a corresponding value based on the transmittance difference; wherein the increase of the preset sampling interval determined based on the transmittance difference is inversely proportional to the transmittance difference; If the light transmittance difference is less than or equal to the second preset difference and greater than the first preset difference, a corresponding processing method is generated based on the number of water samples; If the transmittance difference is greater than the second preset difference, the cleaning threshold for filtering out abnormal data is adjusted to a corresponding value based on the number of water samples; the reduction range of the cleaning threshold determined based on the number of water samples is inversely proportional to the number of water samples; The analysis module is used to generate corresponding processing methods based on the number of water samples, including: If the number of water samples is less than or equal to the preset detection number, the cleaning ratio is determined based on the data volume of each data screened out by the data processing module, and the number of water samples obtained is adjusted to a corresponding value based on the cleaning ratio; the increase in the number of water samples obtained based on the cleaning ratio is proportional to the cleaning ratio; If the number of water samples is greater than the preset test quantity, the water quality is judged to be unqualified and a notification message of abnormal water quality is issued; The analysis module is used to determine the cleaning ratio by taking the ratio of the amount of each data filtered out by the acquired data processing module to the total amount of each intensity and each refractive index data output by the detection module.

2. The water quality detection system for environmental assessment according to claim 1, characterized in that: The analysis module is used to determine whether the water quality is qualified based on the average light transmittance, including: If the average light transmittance is greater than the second preset average light transmittance, the water quality is determined to be qualified, and a notification message of the qualified water quality is issued; If the average light transmittance is less than or equal to the second preset average light transmittance and greater than the first preset average light transmittance, determining whether the water quality is qualified based on the average refractive index of each water sample; If the average light transmittance is less than or equal to the first preset average light transmittance, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference.

3. The water quality detection system for environmental assessment according to claim 2, characterized in that: The analysis module is used to determine whether the water quality is qualified based on the average refractive index of each water sample, including: If the average refractive index is less than or equal to the preset average refractive index, it is determined that the light transmittance difference is determined based on the light transmittance of each water sample, and a corresponding processing method is generated based on the light transmittance difference; If the average refractive index is greater than the preset average refractive index, adjusting the preset mesh number of the screen to a corresponding value based on the average refractive index; The increase in the preset mesh count based on the average refractive index is proportional to the average refractive index.

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