CN117198007B - Alarm system based on aquatic hydrogen sulfide detects - Google Patents
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000007689 inspection Methods 0.000 claims description 93
- 238000005070 sampling Methods 0.000 claims description 70
- 238000012512 characterization method Methods 0.000 claims description 41
- 238000004458 analytical method Methods 0.000 claims description 25
- 238000002789 length control Methods 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000009360 aquaculture Methods 0.000 description 3
- 244000144974 aquaculture Species 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
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- 241000238557 Decapoda Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 150000003568 thioethers Chemical class 0.000 description 1
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Abstract
The invention relates to the technical field of water monitoring, in particular to an alarm system based on underwater hydrogen sulfide detection.
Description
Technical Field
The invention relates to the technical field of water monitoring, in particular to an alarm system based on detection of hydrogen sulfide in water.
Background
In the modern underwater region aquaculture industry, because the death of fish and shrimp due to the oxygen deficiency in water is a phenomenon that happens sometimes, the hydrogen sulfide is a high-density, colorless and highly toxic gas with a bad smell of eggs, sulfides in water in the underwater region seriously threaten biosafety in the underwater region, but in actual production, the hydrogen sulfide in water is difficult to detect in time due to easy oxidization, so that the detection of the hydrogen sulfide in water for aquaculture industry is highly valued by technicians in related fields, and various systems for detecting and early warning in time also grow.
For example, chinese patent: the invention discloses a hydrogen sulfide alarm system which comprises a processor, a wireless control module, an alarm, an escape module, a sodium hydroxide processing module and a hydrogen sulfide recovery module, wherein the alarm comprises an ID module and a hydrogen sulfide alarm, the sodium hydroxide processing module comprises a sodium hydroxide absorption tank, an air pump, an exhaust pump and a hydrogen sulfide content detection module, the output end of the wireless control module is electrically connected with the input end of the processor through a wire, the output end of the alarm is electrically connected with the input end of the wireless control module through a wire, and the hydrogen sulfide alarm system which is integrated with the functions of collecting alarm, leakage processing, leakage recovery and leakage escape is realized by the components consisting of the processor, the wireless control module, the alarm, the escape module, the sodium hydroxide processing module and the hydrogen sulfide recovery module.
The prior art has the following problems;
The prior art does not consider the existence of hydrogen sulfide in water and the position of hydrogen sulfide in water to be positioned because of the water body flowing in the aquaculture scene, and the timeliness and the positioning capability of the system for detecting and alarming the hydrogen sulfide in water are affected.
Disclosure of Invention
Therefore, the invention provides an alarm system based on water hydrogen sulfide detection, which is used for solving the problems that in the prior art, due to the water body flowing, the existence of water hydrogen sulfide is difficult to rapidly detect, and the position of the water hydrogen sulfide is difficult to position.
In order to achieve the above object, the present invention provides an alarm system based on detection of hydrogen sulfide in water, comprising:
The underwater inspection module is used for moving in a preset underwater area;
the positioning module is arranged on the underwater inspection module and used for acquiring position coordinates in the moving process of the underwater inspection module;
The acquisition module is arranged on the underwater inspection module and comprises a resistance detection unit for acquiring a resistance value born by the movement of the underwater inspection module, a transparency detection unit for detecting the transparency of the water body and a pH acquisition unit for detecting the pH value of the water body;
The analysis module is respectively connected with the positioning module and the acquisition module and is used for calculating a suspected characterization coefficient of hydrogen sulfide based on the resistance value and the water transparency so as to judge whether the corresponding underwater subarea is a characteristic subarea or not;
The control module is respectively connected with the underwater inspection module, the positioning module and the analysis module and used for controlling the action mode of the underwater inspection module, and comprises,
The underwater inspection module is controlled to circularly move according to a preset inspection route;
or, adjusting the sampling point density of each characteristic subarea and determining the coordinates of the sampling points so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point;
The alarm execution module is respectively connected with the underwater inspection module, the positioning module and the acquisition module and is used for acquiring data of the pH acquisition unit so as to calculate the pH value of the characteristic subarea, judging whether to send out an alarm prompt or not and acquiring a bottom sludge sample in the characteristic subarea to a preset sample collection place under a preset condition;
and the preset condition is that the alarm module sends out an alarm prompt.
Further, the positioning module establishes a rectangular coordinate system along the surface of the underwater area by taking the position of the underwater inspection module as an origin, and the positioning module determines the coordinates of the underwater inspection module in the rectangular coordinate system as the position coordinates of the underwater inspection module.
Further, the analysis module calculates a suspected characterization coefficient T of hydrogen sulfide based on the resistance value of the underwater inspection module moving into each underwater subarea and the water transparency formula (1),
In the formula (1), F m is a resistance value, F m0 is a preset resistance value reference value, D n is water transparency, D n0 is a preset water transparency reference value, alpha is a resistance weight coefficient, and beta is a transparency weight coefficient.
Further, the analysis module compares the suspected characterization coefficient of hydrogen sulfide with a preset suspected characterization coefficient threshold value to determine whether the corresponding underwater subarea is a characteristic subarea;
and if the suspected characterization coefficient of the hydrogen sulfide is larger than the suspected characterization coefficient threshold, the analysis module judges that the corresponding underwater subarea is a characteristic subarea.
Further, the control module controls the underwater inspection module to circularly move in the non-characteristic subarea according to a preset inspection route;
and controlling the underwater inspection module to be in the characteristic subareas, adjusting the sampling point density of each characteristic subarea, and determining sampling point coordinates so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point.
Further, the control module adjusts the sampling point density of each of the feature sub-regions, wherein,
And the control module adjusts the sampling point density of the characteristic subarea to be in a proportional relation with the suspected characterization coefficient of the hydrogen sulfide corresponding to the characteristic subarea.
Further, the control module controls the underwater inspection module to move to each sampling point to stay for a preset time, wherein,
A plurality of time length control modes for controlling the underwater inspection module to stay for a preset time length at each sampling point based on the hydrogen sulfide suspected characterization coefficients of the characteristic subareas are preset in the control module, and the time length control modes are different in adjustment quantity for the preset time length at each sampling point at which the underwater inspection module moves.
Further, the alarm execution module determines the average value of the pH value in the residence time of the pH acquisition unit at the sampling point as the pH value at the sampling point, calculates the average value of the pH values at a plurality of sampling points in the characteristic subarea, and determines the average value as the pH value of the characteristic subarea.
Further, the alarm execution module compares the pH value of the characteristic subregion with a preset pH threshold value to judge whether to send out an alarm prompt,
And if the pH value of the characteristic subregion is smaller than the pH threshold value, the alarm execution module judges that an alarm prompt is sent out.
Further, the alarm execution module further comprises an alarm display, and the alarm display is used for displaying information of the alarm prompt.
Compared with the prior art, the underwater inspection system has the beneficial effects that the underwater inspection module, the positioning module, the acquisition module, the analysis module, the control module and the alarm execution module are arranged, the suspected characterization coefficient of the hydrogen sulfide is calculated through the analysis module, so that whether the corresponding underwater subarea is a characteristic subarea is judged, the action mode of the underwater inspection module is controlled through the control module, the data of the pH acquisition unit is acquired through the alarm execution module, the pH value of the characteristic subarea is calculated, whether an alarm prompt is sent out is judged, a bottom sludge sample in the characteristic subarea is acquired to a preset sample collection position, further, the existence of the hydrogen sulfide in water is detected quickly, the position where the hydrogen sulfide in water is generated is positioned, and the timeliness of the system for detecting and alarming the hydrogen sulfide in water and the positioning capability are improved.
Particularly, the underwater inspection module circularly moves according to the preset inspection route, the cultivation environment is divided into areas, the positioning module is used for acquiring the position information of the underwater inspection module, the detected water body result corresponds to each area of the cultivation farm, further, the position of hydrogen sulfide in water is rapidly positioned, and the detection and positioning capability of the system on the hydrogen sulfide in water is improved.
In particular, the suspected characterization coefficient of the hydrogen sulfide is calculated through the analysis module, in the actual situation, the larger the stress value detected by the stress detection unit is, the more viscous the water body is, the higher the probability of the hydrogen sulfide in the water is, so that the probability of the hydrogen sulfide in the water can be represented by the stress value detected by the stress detection unit, the lower the transparency of the water body detected by the transparency detection unit is, the more turbid the water body is, the higher the probability of the hydrogen sulfide in the water is, the probability of the hydrogen sulfide in the water can be represented by the transparency of the water body detected by the transparency detection unit, and further, the probability of the hydrogen sulfide in the water is visually represented by the data, so that the timeliness of alarming the hydrogen sulfide in the water is improved.
Particularly, the invention controls the action mode of the underwater inspection module through the control module, in the actual situation, for the underwater area with low possibility of existence of hydrogen sulfide, the underwater inspection module can be controlled to continue to efficiently inspect according to the preset inspection route, for the underwater area with high possibility of existence of hydrogen sulfide, more accurate sampling judgment is carried out by increasing sampling points in the area, the sampling time of each sampling point is prolonged, the situation that the pH value of the water body measured in a short time is in error with the actual pH value of the water body in the area in the flowing water environment is avoided, the accuracy of the measured pH value of the water body is ensured for a certain time period at the sampling points, and further, the timeliness of the system for detecting and alarming the hydrogen sulfide in the water is improved.
Particularly, the invention calculates the pH value of the characteristic subregion based on the data of the pH acquisition unit through the alarm execution module, and judges whether to send an alarm prompt, and the technical personnel in the field know that the hydrogen sulfide generated at the water bottom generally causes the acidification of the bottom mud to reduce the pH value of the surrounding water body environment.
Particularly, the bottom sludge sample in the characteristic sub-area is collected to a preset sample collection place through the alarm execution module, in the practical situation, for an underwater area with extremely high possibility of existence of hydrogen sulfide, the concentration and the generation source of the hydrogen sulfide in water are needed to be further analyzed, and as well known to the person skilled in the art, the water bottom sludge is an aggregation place of organic substances and sediments in wastewater, and the organic substances are decomposed to generate the hydrogen sulfide under the anoxic condition.
Drawings
FIG. 1 is a system block diagram of an alarm system based on detection of hydrogen sulfide in water according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of an acquisition module according to an embodiment of the present invention;
FIG. 3 is a logic flow diagram of an analysis module according to an embodiment of the present invention;
FIG. 4 is a logic flow diagram of an alarm execution module according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
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 merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 and 2, fig. 1 is a system block diagram of an alarm system based on detection of hydrogen sulfide in water according to an embodiment of the present invention, and fig. 2 is a functional block diagram of an acquisition module according to an embodiment of the present invention, where the alarm system based on detection of hydrogen sulfide in water according to the present invention includes:
The underwater inspection module is used for moving in a preset underwater area;
the positioning module is arranged on the underwater inspection module and used for acquiring position coordinates in the moving process of the underwater inspection module;
The acquisition module is arranged on the underwater inspection module and comprises a resistance detection unit for acquiring a resistance value born by the movement of the underwater inspection module, a transparency detection unit for detecting the transparency of the water body and a pH acquisition unit for detecting the pH value of the water body;
The analysis module is respectively connected with the positioning module and the acquisition module and is used for calculating a suspected characterization coefficient of hydrogen sulfide based on the resistance value and the water transparency so as to judge whether the corresponding underwater subarea is a characteristic subarea or not;
The control module is respectively connected with the underwater inspection module, the positioning module and the analysis module and used for controlling the action mode of the underwater inspection module, and comprises,
The underwater inspection module is controlled to circularly move according to a preset inspection route;
or, adjusting the sampling point density of each characteristic subarea and determining the coordinates of the sampling points so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point;
The alarm execution module is respectively connected with the underwater inspection module, the positioning module and the acquisition module and is used for acquiring data of the pH acquisition unit so as to calculate the pH value of the characteristic subarea, judging whether to send out an alarm prompt or not and acquiring a bottom sludge sample in the characteristic subarea to a preset sample collection place under a preset condition;
and the preset condition is that the alarm module sends out an alarm prompt.
Specifically, the invention does not limit the moving mode of the underwater inspection module in the underwater area, the underwater inspection module can be various types of underwater robots, underwater navigation equipment and the like, the underwater inspection module can move underwater, preferably, the underwater navigation equipment can be remotely controlled, further specific remote control is realized, and of course, the underwater inspection module can also be controlled by a logic component to perform a preset operation logic action, which is not repeated; for sampling of sludge, the underwater navigation equipment can be provided with a telescopic sampling mechanical arm to realize sampling, and the method is the prior art and is not repeated.
Specifically, the specific structure of the positioning module is not limited, and preferably, the positioning module can be a GPS positioning device, and the technology is widely applied in industrial life scenes and is not repeated here.
Specifically, the specific structure of the resistance detection unit is not limited, and preferably, in this embodiment, the resistance detection unit may be a pressure sensor disposed at the top end of the underwater inspection module, the measured pressure value is set as the resistance value, and the data is transmitted to the analysis module through the data transmission device, which is in the prior art, and will not be described herein.
Specifically, the specific structure of the transparency detection unit is not limited, and preferably, the transparency detection unit in the embodiment of the invention can be composed of a light source with a certain brightness and a photosensitive detector, and the photosensitive detector is used for collecting the brightness value of the light intensity of the light source with the certain brightness after the light source penetrates through the water body.
Specifically, the specific structure of the pH acquisition unit is not limited, in this embodiment, only the pH of the flowing water body needs to be detected in real time, and preferably, the pH meter can be selected to detect the pH of the water body based on the potential change of the water body, which is in the prior art and is not described herein.
Specifically, the specific structures of the analysis module and the control module are not limited, and the analysis module and the control module can be formed by logic components or each functional unit in the analysis module and the control module, wherein the logic components can be field programmable logic components, microprocessors, processors used in computers and the like, and are not described herein.
Specifically, the specific mode of the alarm execution module for sending the alarm prompt is not limited, the alarm can be realized through the buzzer, and the method is the prior art and is not repeated here.
Specifically, the specific mode of collecting the sludge sample by the alarm execution module is not limited, and preferably, the mode of collecting the sludge sample in the embodiment of the invention can be to dig out underwater sludge through a multi-joint mechanical movable structure, which is the prior art and is not described herein.
In particular, the sample collection site may be disposed on the shore of the water area for receiving a bottom sludge sample within the characteristic sub-area collected by the alarm execution module.
Specifically, the positioning module takes the position of the underwater inspection module as an origin, a rectangular coordinate system is established along the surface of the underwater area, and the positioning module determines the coordinates of the underwater inspection module in the rectangular coordinate system as the position coordinates of the underwater inspection module.
Specifically, the underwater inspection module circularly moves according to the preset inspection route, the cultivation environment is divided into areas, the positioning module is used for acquiring the position information of the underwater inspection module, the detected water body result corresponds to each area of the cultivation farm, further, the position of hydrogen sulfide in water is rapidly positioned, and the detection and positioning capability of the system on the hydrogen sulfide in water is improved.
Specifically, referring to fig. 3, which is a logic flow diagram of an analysis module according to an embodiment of the present invention, the analysis module calculates a suspected characterization coefficient T of hydrogen sulfide based on resistance values of the underwater inspection module moving into each underwater subarea and a water transparency formula (1),
In the formula (1), F m is a blocked force value, F m0 is a preset reference value of the blocked force value, D n is water transparency, D n0 is a preset reference value of water transparency, α is a resistance weight coefficient, and β is a transparency weight coefficient, so that α+β=1 is satisfied.
Preferably, the preset reference value F m0 of the resistance value is obtained based on a pre-test, the resistance value collected by the resistance detection unit in the preset time period during the moving process of the underwater inspection module is recorded, the average value of the resistance values collected in the preset time period is obtained, the average value is determined to be the reference value F m0 of the resistance value, the transparency reference value D n0 of the water body is obtained based on a pre-test, the transparency of the water body collected by the transparency detection unit in the preset time period during the moving process of the underwater inspection module is recorded, the average value of the transparency of the water body collected in the preset time period is obtained, and the average value of the transparency of the water body is determined to be the transparency reference value D n0 of the water body.
Specifically, the suspected characterization coefficient of the hydrogen sulfide is calculated through the analysis module, in the actual situation, the larger the stress value detected by the stress detection unit is, the more viscous the water body is, the higher the probability of the hydrogen sulfide in the water is, which is known to the skilled person, so that the probability of the hydrogen sulfide in the water can be represented by the stress value detected by the stress detection unit, and likewise, the lower the transparency of the water body detected by the transparency detection unit is, the more turbid the water body is, the higher the probability of the hydrogen sulfide in the water is, the probability of the hydrogen sulfide in the water can be represented by the transparency of the water body detected by the transparency detection unit, and further, the probability of the hydrogen sulfide in the water is intuitively represented by the data, so that the timeliness of alarming the hydrogen sulfide in the water is improved.
Specifically, the analysis module compares the suspected characterization coefficient T of hydrogen sulfide with a preset suspected characterization coefficient threshold T0 to determine whether the corresponding underwater subarea is a characteristic subarea;
And if the suspected characterization coefficient T of the hydrogen sulfide is larger than the suspected characterization coefficient threshold T0, the analysis module judges that the corresponding underwater subarea is a characteristic subarea.
Preferably, in the embodiment of the invention, the value range of the suspected characterization coefficient threshold T0 is [1.15,1.2].
In particular, the process of controlling the action mode of the underwater inspection module by the control module comprises the following steps of,
The control module controls the underwater inspection module to circularly move in the non-characteristic subarea according to a preset inspection route;
and controlling the underwater inspection module to be in the characteristic subareas, adjusting the sampling point density of each characteristic subarea, and determining sampling point coordinates so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point.
In particular, the control module adjusts the sampling point density of each of the feature sub-regions, wherein,
And the control module adjusts the sampling point density of the characteristic subarea to be in a proportional relation with the suspected characterization coefficient of the hydrogen sulfide corresponding to the characteristic subarea.
Preferably, in this embodiment, the control module adjusts the sampling point density of each of the feature sub-regions based on the hydrogen sulfide suspected characterization coefficient, wherein,
Comparing the hydrogen sulfide suspected characterization coefficient T with a preset first suspected characterization coefficient comparison value T1 and a second suspected characterization coefficient comparison value T2,
If T is less than or equal to T1, the control module adjusts the sampling point density of the characteristic sub-region to be 0.25 per square meter;
if T1 is less than T2, the control module adjusts the sampling point density of the characteristic subarea to be 0.5 per square meter;
And if T is more than or equal to T2, the control module adjusts the sampling point density of the characteristic subareas to be 1 per square meter.
In order to enable the preset first and second suspected characterization coefficient contrast values T1 and T2 to distinguish the difference in the possibility of the presence of hydrogen sulfide, the first suspected characterization coefficient contrast value t1=1.15×t0 and the second suspected characterization coefficient contrast value t2=1.3×t0 may be set.
Specifically, the control module controls the underwater inspection module to move to each sampling point to stay for a preset time, wherein,
A plurality of time length control modes for controlling the underwater inspection module to stay for a preset time length at each sampling point based on the hydrogen sulfide suspected characterization coefficients of the characteristic subareas are preset in the control module, and the time length control modes are different in adjustment quantity for the preset time length at each sampling point at which the underwater inspection module moves.
Preferably, in this embodiment, at least three control modes for controlling the underwater inspection module to stay for a predetermined time period at each sampling point based on the hydrogen sulfide suspected characterization coefficient of the feature subarea are set, wherein the control unit compares the hydrogen sulfide suspected characterization coefficient T with a preset third suspected characterization coefficient comparison value T3 and a preset fourth suspected characterization coefficient comparison value T4,
If T is less than or equal to T3, the control unit adopts a first time length control mode, where the first time length control mode is to control the underwater inspection module to move to each sampling point and stay for a predetermined time length to be a first predetermined time length T1, and t1=t0+Δt1 is set;
If T3 is less than T4, the control unit adopts a second time length control mode, wherein the second time length control mode is to control the underwater inspection module to move to each sampling point to stay for a preset time length of T2, and t2=t0+Δt2 is set;
if T is more than or equal to T4, the control unit adopts a third time length control mode, wherein the third time length control mode is to control the underwater inspection module to move to each sampling point to stay for a preset time length of T3, and t3=t0+Deltat3 is set;
Wherein T0 represents an initial value of a residence time period when the underwater inspection module moves to each sampling point, Δt1 represents a first preset time period adjustment amount, Δt2 represents a second preset time period adjustment amount, Δt3 represents a third preset time period adjustment amount, in this embodiment, in order to enable a preset third suspected characterization coefficient contrast value T3 and a fourth suspected characterization coefficient contrast value T4 to distinguish a difference of possibility of existence of hydrogen sulfide, t3=1.2×t0 and t4=1.4×t0 may be made, so as to enable adjustment to be effective and avoid excessive adjustment amount, and in this embodiment, 0.2t0 is less than Δt1 < Δt2 < Δt3 is less than or equal to 0.5t0.
Specifically, the invention controls the action mode of the underwater inspection module through the control module, in the actual situation, for the underwater area with low possibility of existence of hydrogen sulfide, the underwater inspection module can be controlled to continue to efficiently inspect according to the preset inspection route, for the underwater area with high possibility of existence of hydrogen sulfide, more accurate sampling judgment is carried out by increasing sampling points in the area, the sampling time of each sampling point is prolonged, the situation that the pH value of the water body measured in a short time is in error with the actual pH value of the water body in the area in the flowing water environment is avoided, the accuracy of the measured pH value of the water body is ensured for a certain time period at the sampling points, and further, the timeliness of the system for detecting and alarming the hydrogen sulfide in the water is improved.
Specifically, referring to fig. 4, a logic flow diagram of an alarm execution module according to an embodiment of the present invention is shown, where the alarm execution module determines a pH average value of a residence time of the pH acquisition unit at a sampling point as a pH value at the sampling point, calculates an average value of pH values at a plurality of sampling points in the characteristic sub-area, and the alarm execution module determines the average value as a pH value of the characteristic sub-area.
Specifically, the alarm execution module compares the pH value C pH of the characteristic subregion with a preset pH threshold value C pH' to judge whether to send out an alarm prompt,
If the pH value C pH of the characteristic subregion is smaller than the pH threshold value C pH', the alarm execution module judges that an alarm prompt is sent out;
And if the pH value C pH of the characteristic subregion is more than or equal to the pH threshold value C pH', the alarm execution module judges that an alarm prompt is not sent out.
Preferably, in this embodiment, the pH threshold C pH' is in the range of [6,6.5].
Specifically, the invention calculates the pH value of the characteristic subregion based on the data of the pH acquisition unit through the alarm execution module, and judges whether to send an alarm prompt, and the technical personnel in the field know that the hydrogen sulfide generated at the water bottom generally causes the acidification of the bottom mud to reduce the pH value of the surrounding water body environment.
Specifically, the alarm execution module further comprises an alarm display, and the alarm display is used for displaying information of the alarm prompt.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An alarm system based on detection of hydrogen sulfide in water, comprising:
The underwater inspection module is used for moving in a preset underwater area;
the positioning module is arranged on the underwater inspection module and used for acquiring position coordinates in the moving process of the underwater inspection module;
The positioning module establishes a rectangular coordinate system along the surface of the underwater area by taking the position of the underwater inspection module as an origin, and the positioning module determines the coordinates of the underwater inspection module in the rectangular coordinate system as the position coordinates of the underwater inspection module;
The acquisition module is arranged on the underwater inspection module and comprises a resistance detection unit for acquiring a resistance value born by the movement of the underwater inspection module, a transparency detection unit for detecting the transparency of the water body and a pH acquisition unit for detecting the pH value of the water body;
The analysis module is respectively connected with the positioning module and the acquisition module and is used for calculating a suspected characterization coefficient of hydrogen sulfide based on the resistance value and the water transparency so as to judge whether the corresponding underwater subarea is a characteristic subarea or not;
the analysis module calculates a suspected characterization coefficient T of the hydrogen sulfide according to a formula (1),
，
In the formula (1), F m is a resistance value, F m0 is a preset resistance value reference value, D n is water transparency, D n0 is a preset water transparency reference value, alpha is a resistance weight coefficient, and beta is a transparency weight coefficient;
The control module is respectively connected with the underwater inspection module, the positioning module and the analysis module and used for controlling the action mode of the underwater inspection module, and comprises,
The underwater inspection module is controlled to circularly move according to a preset inspection route;
or, adjusting the sampling point density of each characteristic subarea and determining the coordinates of the sampling points so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point;
The alarm execution module is respectively connected with the underwater inspection module, the positioning module and the acquisition module and is used for acquiring data of the pH acquisition unit so as to calculate the pH value of the characteristic subarea, judging whether to send out an alarm prompt or not and acquiring a bottom sludge sample in the characteristic subarea to a preset sample collection place under a preset condition;
and the preset condition is that the alarm executing module sends out an alarm prompt.
2. The alarm system based on hydrogen sulfide detection in water according to claim 1, wherein the analysis module compares the hydrogen sulfide suspected characterization coefficient with a preset suspected characterization coefficient threshold to determine whether the corresponding underwater subregion is a feature subregion;
and if the suspected characterization coefficient of the hydrogen sulfide is larger than the suspected characterization coefficient threshold, the analysis module judges that the corresponding underwater subarea is a characteristic subarea.
3. The alarm system based on detection of hydrogen sulfide in water according to claim 2, wherein the control module controls the underwater inspection module to move cyclically in a non-characteristic sub-area according to a predetermined inspection route;
and controlling the underwater inspection module to be in the characteristic subareas, adjusting the sampling point density of each characteristic subarea, and determining sampling point coordinates so as to control the underwater inspection module to move to each sampling point to stay for a preset time length and detect the pH value of the water body at the bottom of the sampling point.
4. The alarm system based on hydrogen sulfide in water detection according to claim 3, wherein said control module adjusts a sampling point density of each of said characteristic subregions, wherein,
And the control module adjusts the sampling point density of the characteristic subarea to be in a proportional relation with the suspected characterization coefficient of the hydrogen sulfide corresponding to the characteristic subarea.
5. The alarm system based on hydrogen sulfide in water as claimed in claim 4, wherein said control module controls said underwater inspection module to move to stay at each sampling point for a predetermined period of time, wherein,
A plurality of time length control modes for controlling the underwater inspection module to stay for a preset time length at each sampling point based on the hydrogen sulfide suspected characterization coefficients of the characteristic subareas are preset in the control module, and the time length control modes are different in adjustment quantity for the preset time length at each sampling point at which the underwater inspection module moves.
6. The alarm system based on hydrogen sulfide detection in water according to claim 5, wherein the alarm execution module determines a pH average value of the pH acquisition unit in a residence time period at a sampling point as a pH value at the sampling point, calculates an average value of pH values at a plurality of the sampling points in the characteristic subregion, and the alarm execution module determines the average value as a pH value of the characteristic subregion.
7. The alarm system based on hydrogen sulfide detection in water according to claim 6, wherein the alarm execution module compares the pH value of the characteristic subregion with a preset pH threshold to determine whether to issue an alarm prompt;
And if the pH value of the characteristic subregion is smaller than the pH threshold value, the alarm execution module judges that an alarm prompt is sent out.
8. The alarm system based on hydrogen sulfide in water detection of claim 1, wherein the alarm execution module further comprises an alarm display for displaying information of the alarm prompt.
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