A water quality detection device and its application and control method

Abstract

The present invention belongs to the field of water quality detection, and discloses a water quality detection device, including: a water quality sensor mounting bracket, including a horizontal connecting shaft and two sensor connecting shafts arranged on the horizontal connecting shaft; and the sensor connecting shaft can be translated in the plane where the horizontal connecting shaft is located; a water quality detection main sensor and a water quality detection correction sensor are respectively connected to the sensor connecting shaft, and the water quality detection main sensor moves in all directions along the sensor connecting shaft to detect the water quality conditions at different positions of the water body in real time; a control device determines whether the detection result of the water quality detection main sensor is accurate according to the comparison results of the two sensors. When the difference between the real-time detection result and the correction detection result exceeds a predetermined threshold, it is determined that the water quality detection main sensor is contaminated or damaged, and the water quality detection main sensor is cleaned or maintained. Corresponding applications and control methods are also provided. The above-mentioned device and method can accurately detect water quality conditions in real time and save labor and equipment operating costs.

Description

Technical Field

[0001] The invention belongs to the field of water quality detection, and in particular relates to a water quality detection device and an application and control method thereof. Background Art

[0002] In the field of sewage treatment or aquaculture, the monitoring and management of water quality has become particularly critical. Water quality detection devices are key monitoring equipment in the biological treatment process of sewage treatment plants, used to ensure a suitable oxygen environment for microorganisms to decompose organic matter and other biochemical reactions. Similarly, in aquaculture, water quality is not only directly related to the health of aquatic organisms, but also significantly affects the breeding efficiency and the quality of aquatic products. Therefore, it is crucial to implement effective water quality monitoring and take corresponding oxygenation measures. Traditional water quality monitoring methods, such as timed sampling and laboratory analysis, usually have defects such as low monitoring frequency, long response time, and high cost. The manual sampling and analysis method, that is, regularly collecting water samples and sending them to the laboratory for chemical analysis, can determine water quality parameters, but the detection cycle is long and cannot reflect the dynamic changes of water quality in real time. In addition, the sampling process may cause disturbance and pollution to the water body. The independent operation of the aeration equipment cannot intelligently adjust the amount of oxygenation according to the real-time detection results due to the lack of linkage with the water quality monitoring data, which not only leads to resource waste, but also reduces the regulation efficiency.

[0003] The online monitoring method realizes real-time monitoring of water quality parameters by installing sensors in the water body and transmitting data to the monitoring center by wireless or wired means. However, in this method, the sensors are easily affected by factors such as water dirt and biological attachment. The sensors are easily damaged, which will make the detection results inaccurate and cause problems in the control of the entire system. They need to be replaced frequently. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology, and to provide a water quality detection device and its application and control method that can accurately detect water quality in real time and save labor and equipment operating costs.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is: a water quality detection device, comprising:

[0006] The water quality sensor mounting bracket comprises a horizontal connecting shaft and two sensor connecting shafts arranged on the horizontal connecting shaft; and the sensor connecting shafts can translate in the plane where the horizontal connecting shaft is located;

[0007] The main water quality detection sensor is connected to one of the sensor connection shafts, and the main water quality detection sensor can move up and down along the sensor connection shaft; when in use, the main water quality detection sensor moves in all directions in the water body to detect the water quality conditions at different positions of the water body in real time and obtain real-time inspection results;

[0008] The water quality detection calibration sensor is connected to another sensor connection shaft and is used to detect the water body near the water quality detection main sensor from time to time to obtain the calibration detection result. After completing one detection, the water quality detection calibration sensor leaves the water body along the sensor connection shaft;

[0009] The control device is connected to the water quality detection main sensor and the water quality detection correction sensor, and is used to receive and compare the real-time detection results and the correction detection results of the water quality detection main sensor and the water quality detection correction sensor, and judge whether the detection result of the water quality detection main sensor is accurate according to the comparison result;

[0010] When the difference between the real-time detection result and the calibrated detection result does not exceed a predetermined threshold, it is determined that the result of the main water quality detection sensor is accurate;

[0011] When the difference between the real-time detection result and the corrected detection result exceeds a predetermined threshold, it is determined that the water quality detection main sensor is contaminated or damaged, and the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis for cleaning or maintenance.

[0012] In one embodiment, a cleaning device is also included. When the difference between the real-time detection result and the corrected detection result exceeds a predetermined threshold, the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis, and then uses the cleaning device to clean the water quality detection main sensor.

[0013] In one embodiment, the cleaning device includes a cleaning head, an electric push rod, a telescopic water pipe, a water pump and a filter. The cleaning head is connected to the water pump through the telescopic water pipe, the electric push rod is connected to the cleaning head, and the filter is arranged at the water inlet of the water pump to filter impurities.

[0014] In one embodiment, the horizontal connecting shaft includes two parallel first connecting shafts and a second connecting shaft arranged between the two first connecting shafts, the second connecting shaft is translatable along the two first connecting shafts, and the two sensor connecting shafts are vertically connected to the second connecting shaft.

[0015] In one embodiment, each first connecting shaft is provided with a first slide groove, a first slider is provided in the first slide groove, a first mounting plate is provided on the first slider, a first motor is provided on the first mounting plate, and the first motor is connected to the first slider via a rack;

[0016] The two ends of the second connecting shaft are respectively fixed on the two first mounting plates, and are synchronously driven by the two first motors to drive the second connecting shaft to translate along the two first connecting shafts.

[0017] In one embodiment, a second sliding groove is provided on the second connecting shaft, two second sliding blocks are provided in the second sliding groove, each second sliding block is provided with a mounting seat, each mounting seat is provided with a second motor and a third motor, the bottoms of the two mounting seats are both engaged in the second sliding groove, the second sliding block is connected to the second motor through a second rack, and the two second motors are respectively driven to drive the two sensor connecting shafts to move left and right in the second sliding groove, a third sliding groove is provided on the two sensor connecting shafts, a third sliding block is provided in the third sliding groove, each third sliding block is respectively connected to a mounting seat, the third sliding block is connected to the third motor through a third rack, and the sensor connecting shaft is driven to move up and down in a vertical direction by the third motor, and the water quality detection main sensor and the water quality detection correction sensor are fixed to the bottom of the sensor connecting shaft through a sensor mounting ring.

[0018] In one embodiment, it also includes a blowing device, which is connected to the water body through a pipeline, and the blowing device adjusts the oxygen supply through the control device.

[0019] Based on a general inventive concept, the present invention also provides an application of the water quality detection device as described above in sewage treatment or aquaculture.

[0020] Based on a general inventive concept, the present invention also provides a control method for a water quality detection device, comprising:

[0021] Move the sensor connecting shaft in the horizontal and vertical directions, and start the main water quality detection sensor to perform real-time detection to obtain real-time detection results;

[0022] The water quality detection and calibration sensor is started from time to time to detect the water quality of the water body near the water quality detection main sensor to obtain the calibration detection result. After the detection is completed, the water quality detection and calibration sensor is controlled to leave the water body and enter the water body again when working next time;

[0023] The real-time detection result is compared with the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the result of the main water quality detection sensor is accurate;

[0024] When the comparison result exceeds the threshold, it is determined that the water quality detection main sensor is contaminated or damaged, and the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis for cleaning or maintenance.

[0025] In one embodiment, when the comparison result exceeds a threshold value, it is determined that the main water quality detection sensor is contaminated or damaged, and the control device controls the main water quality detection sensor to leave the water body along the sensor connection axis for cleaning or maintenance, including:

[0026] When the comparison result exceeds the threshold, the water quality detection main sensor is controlled to leave the water body and be cleaned. After cleaning, the water quality detection main sensor is controlled to return to the water body for re-detection, and the re-detection result is compared with the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the water quality detection main sensor can continue to be used for water quality detection after cleaning. When the comparison result exceeds the threshold for multiple times, it is determined that the water quality detection main sensor needs to be repaired or replaced.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the water quality detection device of the present application, through the layout of the water quality sensor mounting bracket, uses a driving device to drive the main water quality detection sensor to move in all directions in the water body, so that the water quality conditions at different positions can be collected in real time. Most importantly, the water quality detection correction sensor detects the water body near the main water quality detection sensor, which can not only verify whether the detection result of the main water quality detection sensor is accurate, but also control all the system controls including the water quality detection device to operate efficiently. Furthermore, whether in sewage treatment or aquaculture, the main water quality detection sensor operates in the water body for a long time, and the water body contains many easily deposited substances, which can easily cause the main water quality detection sensor to be contaminated or damaged. In the prior art, users take out the main water quality detection sensor for inspection, cleaning and maintenance from time to time based on experience, which brings a lot of inconvenience. Sometimes the equipment is running with problems, which reduces the equipment operation efficiency and increases labor costs. In this application, the water quality detection and calibration sensor leaves the water surface after each detection, ensuring the stability and accuracy of the water quality detection and calibration sensor itself. At the same time, it can also check at any time whether the water quality detection main sensor needs cleaning or maintenance. Especially in water bodies with relatively large areas, sometimes there are multiple water quality detection main sensors. In this way, through a one-to-many method, one water quality detection main sensor can verify and calibrate the results of multiple water quality detection main sensors, which not only saves labor and equipment costs, but also improves the work efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 is a schematic structural diagram of a tank body including a water quality detection device according to an embodiment;

[0030] Figure 2 It is a schematic structural diagram of a water quality detection device according to one embodiment;

[0031] Figure 3 is a schematic structural diagram of a sensor connecting shaft according to an embodiment;

[0032] Figure 4 It is a schematic structural diagram of a cleaning device according to one embodiment;

[0033] Figure 5 is a schematic diagram of sensor installation positions in one implementation mode;

[0034] Figure 6 is a partial logic diagram of a method for controlling a water quality detection device according to an embodiment;

[0035] Figure 7 is a partial logic diagram of a method for controlling a water quality detection device according to an embodiment;

[0036] Figure 8 is a partial logic diagram of a method for controlling a water quality detection device according to an embodiment;

[0037] Fig. 9 The present invention is a circuit wiring diagram of a water quality detection device in one embodiment when used in aquaculture.

[0038] Figure numerals: 1: sewage treatment tank / aquaculture tank, 2: water quality detection device, 3: cleaning device, 4: water quality sensor mounting bracket, 5: air blowing device, 21: water quality detection main sensor, 22: water quality detection calibration sensor, 23: sensor mounting ring, 31: calibration sensor cleaning device, 32: main sensor cleaning device, 311: cleaning head, 312: rotating joint, 313: telescopic water pipe, 314: electric push rod, 315: water pump, 316: water pipe, 317: filter, 41: first connecting shaft one, 42: first Connecting shaft 2, 43: second connecting shaft, 44: sensor connecting shaft 1, 45: sensor connecting shaft 2, 411: first rack 1, 412: first motor 1, 413: first mounting plate 1, 421: first rack 2, 422: second motor 2, 423: first mounting plate 2, 431: second rack 1, 432: second motor 1, 433: second motor 2, 441: third rack 1, 442: mounting seat 1, 443: third motor 1, 451: third rack 2, 452: mounting seat 2, 453: third motor 2. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0040] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0041] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0042] See also Figure 1-9 , the present invention provides a water quality monitoring device and its application and control method.

[0043] The water quality detection device 2 of one embodiment includes: a water quality sensor mounting bracket, a water quality detection main sensor 21, a water quality detection correction sensor 22 and a control device. Specifically, the water quality sensor mounting bracket includes a horizontal connecting shaft and a sensor connecting shaft 1 44 and a sensor connecting shaft 2 45 arranged on the horizontal connecting shaft; and the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 can be translated in the plane where the horizontal connecting shaft is located; the water quality detection main sensor 21 is connected to one of the sensor connecting shafts, and the water quality detection main sensor 21 can move up and down along the sensor connecting shaft; in use, the water quality detection main sensor 21 moves in all directions in the water body to detect the water quality conditions at different positions of the water body in real time and obtain real-time inspection results; the water quality detection correction sensor 22 is connected to another sensor connecting shaft, and is used to detect the water body near the water quality detection main sensor 21 from time to time to obtain the correction detection results, and the water quality detection correction sensor 22 is used to detect the water body near the water quality detection main sensor 21 from time to time to obtain the correction detection results. After completing one detection, the sensor 22 leaves the water body along the sensor connection axis; the control device is connected to the water quality detection main sensor 21 and the water quality detection correction sensor 22, and is used to receive and compare the real-time detection results and the correction detection results of the water quality detection main sensor 21 and the water quality detection correction sensor 22, and judge whether the detection result of the water quality detection main sensor is accurate according to the comparison result; when the difference between the real-time detection result and the correction detection result does not exceed the predetermined threshold value, it is judged that the result of the water quality detection main sensor 21 is accurate; when the difference between the real-time detection result and the correction detection result exceeds the predetermined threshold value, it is judged that the water quality detection main sensor 21 is contaminated or damaged, and the control device controls the water quality detection main sensor 21 to leave the water body along the sensor connection axis for cleaning or maintenance.

[0044] The water quality detection device of the present application, through the layout of the water quality sensor mounting bracket, uses a driving device to drive the main water quality detection sensor 21 to move in all directions in the water body, so that the water quality conditions at different positions can be collected in real time. Most importantly, the water quality detection correction sensor 22 detects the water body near the main water quality detection sensor 21, which can not only verify whether the detection result of the main water quality detection sensor 21 is accurate, but also control all the system controls including the water quality detection device to operate efficiently. Furthermore, whether in sewage treatment or aquaculture, the main water quality detection sensor 21 runs in the water body for a long time, and the water body contains many easily deposited substances, which can easily cause the main water quality detection sensor 21 to be contaminated or damaged. In the prior art, users take out the main water quality detection sensor 21 for inspection, cleaning and maintenance from time to time based on experience, which brings a lot of inconvenience. Sometimes the equipment runs with problems, which reduces the equipment operation efficiency and increases labor costs. In the present application, the water quality detection and calibration sensor leaves the water surface after each detection, which ensures the stability and accuracy of the water quality detection and calibration sensor 22 itself, and can also check at any time whether the water quality detection main sensor 21 needs to be cleaned or maintained. Especially in a water body with a relatively large area, sometimes there are multiple water quality detection main sensors 21, so through a one-to-many method, one water quality detection and calibration sensor 22 can verify and calibrate the results of multiple water quality detection main sensors 21, which not only saves labor and equipment costs, but also improves the work efficiency of the system.

[0045] In one embodiment, the water quality detection main sensor 21 and the water quality detection correction sensor 22 are respectively fixed to the bottom of the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 through the sensor mounting ring 23 .

[0046] In one embodiment, a cleaning device 3 is further included. When the difference between the real-time detection result and the corrected detection result exceeds a predetermined threshold, the control device controls the water quality detection main sensor 21 to leave the water body along the sensor connection axis, and then uses the cleaning device 3 to clean the water quality detection main sensor 21. Specifically, in one embodiment, the threshold value can be set to a difference of 5%. Of course, the threshold value can be adjusted to other data according to actual conditions.

[0047] In one embodiment, there are two cleaning devices 3, which are used to clean the main water quality detection sensor 21 and the water quality detection correction sensor 22 respectively. The cleaning device 3 is connected to the control device, and the control device controls the operation of the cleaning device 3. Specifically, in one embodiment, the main sensor cleaning device 32 is fixed on the mounting seat 1 442, and the correction sensor cleaning device 31 is fixed on the mounting seat 2 452. The correction sensor cleaning device 31 and the main sensor cleaning device 32 have the same structure, and both include a cleaning head 311, a rotating joint 312, a telescopic water pipe 313, an electric push rod 314, a water pump 315, a water pipe 316 and a filter 317. The cleaning head 311 is connected to one end of the telescopic water pipe 313 through the rotating joint 312, and the other end of the telescopic water pipe 313 is connected to the water pump 315. The electric push rod 314 is connected to the cleaning head 311, and is used to push the cleaning head 311 to move horizontally. The filter 317 is arranged at the water inlet of the water pump 315, and is used to filter impurities in the water source of the water inlet. Preferably, the water source of the water inlet is directly the water source of the water body to be tested, which is convenient and quick. The water pump 315 is connected to the water source through the water pipe 316 .

[0048] During use, when it is necessary to clean the main water quality detection sensor 21 and the water quality detection correction sensor 22, the main water quality detection sensor 21 and the water quality detection correction sensor 22 are moved up to leave the water surface and are located near the corresponding main sensor cleaning device 32 and the correction sensor cleaning device 31 to carry out the cleaning work. After the cleaning is completed, the main water quality detection sensor 21 is moved down to the water body to continue working, and the water quality detection correction sensor 22 is left on the water body and moved to the water body when it is used next time. By setting the main sensor cleaning device 32 and the correction sensor cleaning device 31, the cleaning work can be started at any time through the control device as needed, and there is no need to manually remove the sensor from the water body, which saves labor costs and is convenient to operate. At the same time, the service life of the main water quality detection sensor 21 can be increased, and the equipment investment cost can be saved.

[0049] Specifically, in one embodiment, the horizontal connecting axis includes a first connecting axis 41 and a first connecting axis 42 which are arranged in parallel, and a second connecting axis 43 which is arranged between the first connecting axis 41 and the first connecting axis 42. The second connecting axis 43 can be translated along the first connecting axis 41 and the first connecting axis 42, and the sensor connecting axis 1 44 and the sensor connecting axis 2 45 are vertically connected to the second connecting axis 43.

[0050] Specifically, in one embodiment, the first connecting shaft 1 41 and the first connecting shaft 2 42 are provided with a first slide groove, specifically, the first connecting shaft 1 41 is provided with a first slide groove 1, the first slide groove 1 is provided with a first slider 1, the first slider 1 is provided with a first mounting plate 1 413, the first mounting plate 1 413 is fixedly mounted with a first motor 1 412, and the first motor 1 412 is connected to the first slider via a first rack 1 411. Similarly, the first connecting shaft 2 42 is provided with a first slide groove 2, the first slide groove 2 is provided with a first slider 2, the first slider 2 is provided with a first mounting plate 2 423, the first mounting plate 2 423 is fixedly mounted with a first motor 2 422, and the first motor 2 422 is connected to the first slider 2 via a first rack 2 421.

[0051] Specifically, in one embodiment, the two ends of the second connecting shaft 43 are respectively fixed to the first mounting plate 1 413 and the first mounting plate 2 423, and the second connecting shaft 43 is driven to translate along the two first connecting shafts 1 41 and the first connecting shaft 2 42 by the synchronous driving of the first motor 1 412 and the first motor 2 422. Since the main water quality detection sensor 21 and the water quality detection correction sensor 22 are fixed on the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 on the second connecting shaft 43, the first motor 1 412 and the first motor 2 422 can drive the main water quality detection sensor 21 and the water quality detection correction sensor 22 to move forward and backward.

[0052] In one embodiment, the second connecting shaft 43 is provided with a second slide groove, and two second sliders are provided in the second slide groove, one second slider is provided with a mounting seat 1 442, and the other second slider is provided with a mounting seat 2 452. The mounting seat 1 442 is provided with a second motor 1 432 and a third motor 1 443, and the mounting seat 2 452 is provided with a second motor 2 433 and a third motor 2 453. The bottoms of the mounting seat 1 442 and the mounting seat 2 452 are both engaged in the second slide groove, and are driven by the second motor 1 432 and the second motor 2 433 respectively, thereby driving the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 to move left and right in the second slide groove. The sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 are provided with a third slide groove 1 and a third slide groove 2 respectively, and a third slider 1 is provided in the third slide groove 1, and the third slider 1 is connected to the mounting seat 1 442, and the mounting seat 1 442 is connected to the third motor 1 443 through the third rack 1 441. The third slide groove 2 is provided with a third slider 2, which is connected to the mounting seat 2 452, and the mounting seat 2 452 is connected to the third motor 2 453 through the third rack 2 451, and the sensor connecting shaft 1 443 and the sensor connecting shaft 2 453 are driven to move up and down in the vertical direction respectively. In the driving process, the third slider 1 and the third slider 2 are fixed to the mounting seat 1 442 and the mounting seat 2 452 respectively without displacement, but move up and down in the vertical direction relative to the third slider 1 and the third slider 2 through the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45.

[0053] According to the above description, the sensor connecting shaft 1 44 and the sensor connecting shaft 2 45 are driven by multiple motors and can move in all directions in the water body, so as to detect the water quality conditions at different positions in the water body in real time. The water quality detection main sensor 21 and the water quality detection correction sensor 22 are driven along each axis by the above-mentioned chute and slider motor drive method, which has a simple structure and low cost.

[0054] Specifically, in one embodiment, the blower is connected to the water body through a pipeline, and according to the water quality of the water body, the control device adjusts the blower to adjust the oxygen supply through the control device. Specifically, the control device determines whether the dissolved oxygen content in the water body meets the water quality control strategy based on the water quality (dissolved oxygen content information) transmitted by the water quality detection main sensor 21. If it meets the water quality control strategy, the blower maintains the existing power. If it does not meet the water quality control strategy, the air volume is adjusted according to the control strategy. More specifically, when the dissolved oxygen content is just enough, the power is maintained unchanged. When there is a small shortage, the speed of a single unit is increased; when there is a severe shortage, the number of blowers is increased; when there is not much excess, the speed of a single unit is reduced; when there is an excess, the corresponding number of blowers is turned off.

[0055] Based on a general inventive concept, the present invention also provides an application of the water quality detection device as described above in sewage treatment or aquaculture. Fig. 9 , shows a circuit wiring diagram of a water quality detection device 2 in one embodiment when used in aquaculture.

[0056] Based on a general inventive concept, the present invention also provides a control method for a water quality detection device, comprising:

[0057] S110, moving the sensor connecting shaft in the horizontal and vertical directions, and starting the water quality detection main sensor 21 to perform real-time detection to obtain real-time detection results;

[0058] S120, irregularly starting the water quality detection calibration sensor 22 to detect the water quality of the water body near the water quality detection main sensor 21 to obtain a calibration detection result, and after completing the detection, controlling the water quality detection calibration sensor 22 to leave the water body and re-enter the water body during the next operation;

[0059] S130. Compare the real-time detection result and the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the result of the water quality detection main sensor 21 is accurate. When the comparison result exceeds the threshold, it is determined that the water quality detection main sensor 21 is contaminated or damaged, and the control device controls the water quality detection main sensor 21 to leave the water body along the sensor connection axis for cleaning or maintenance.

[0060] Specifically, in one embodiment, the threshold value can be set to 5% of the measurement result deviation. Of course, the threshold value can be adjusted to other data according to actual conditions.

[0061] In one embodiment, when the comparison result exceeds the threshold, it is determined that the main water quality detection sensor 21 is contaminated or damaged, and the control device controls the main water quality detection sensor 21 to leave the water body along the sensor connection axis for cleaning or maintenance, including:

[0062] When the comparison result exceeds the threshold, the water quality detection main sensor 21 is controlled to leave the water body and be cleaned. After cleaning, the water quality detection main sensor 21 is controlled to return to the water body for re-detection, and the re-detection result is compared with the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the water quality detection main sensor 21 can continue to be used for water quality detection after cleaning. When the comparison result exceeds the threshold for multiple times, it is determined that the water quality detection main sensor 21 needs to be repaired or replaced.

[0063] In an embodiment of the present invention, the main working principle of the control method of the water quality detection device 2 is: the above-mentioned water quality detection main sensor 21 mainly adopts a dissolved oxygen sensor, because this is the most important parameter to consider for the water quality situation. However, the water quality detection main sensor 21 is not limited to this type of sensor. Among them, the water quality detection main sensor 21 uses the path of the water quality sensor mounting bracket and moves in all directions through the driving device, so as to realize long-term water quality detection at different depths and different positions in the water body. The water quality detection correction sensor 22 performs a detection at regular intervals. Before the detection, the water quality detection correction sensor 22 is automatically cleaned and then enters the water body near the main sensor position for detection, and data comparison is performed to determine whether the detection result of the water quality detection correction sensor 22 is accurate, and further determine whether the water quality detection main sensor 21 is contaminated or damaged, and clean and maintain it according to the actual situation. If the water quality detection main sensor 21 is calibrated to be qualified, the water quality detection correction sensor 22 exits the water body and is cleaned again, waiting for the next detection. If the calibration of the water quality detection main sensor 21 fails, the water quality detection main sensor 21 will be withdrawn from the water body and cleaned. After cleaning, the calibration procedure will be performed again to determine the status of the water quality detection main sensor 21. If it fails, manual processing will be notified for repair or replacement.

Claims

1. A water quality detection device, characterized in that: include: A water quality sensor mounting bracket comprises a horizontal connecting shaft and two sensor connecting shafts arranged on the horizontal connecting shaft; And the sensor connection axis can be translated in the plane where the horizontal connection axis is located; The main water quality detection sensor is connected to one of the sensor connection shafts, and the main water quality detection sensor can move up and down along the sensor connection shaft; when in use, the main water quality detection sensor moves in all directions in the water body to detect the water quality conditions at different positions of the water body in real time and obtain real-time inspection results; The water quality detection calibration sensor is connected to another sensor connection shaft and is used to detect the water body near the water quality detection main sensor from time to time to obtain the calibration detection result. After completing one detection, the water quality detection calibration sensor leaves the water body along the sensor connection shaft; The control device is connected to the water quality detection main sensor and the water quality detection correction sensor, and is used to receive and compare the real-time detection results and the correction detection results of the water quality detection main sensor and the water quality detection correction sensor, and judge whether the detection result of the water quality detection main sensor is accurate according to the comparison result; When the difference between the real-time detection result and the calibrated detection result does not exceed a predetermined threshold, it is determined that the result of the main water quality detection sensor is accurate; When the difference between the real-time detection result and the corrected detection result exceeds a predetermined threshold, it is determined that the water quality detection main sensor is contaminated or damaged, and the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis for cleaning or maintenance.

2. The water quality detection device according to claim 1, characterized in that: It also includes a cleaning device. When the difference between the real-time detection result and the corrected detection result exceeds a predetermined threshold, the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis, and then uses the cleaning device to clean the water quality detection main sensor.

3. The water quality detection device according to claim 2, characterized in that: The cleaning device includes a cleaning head, an electric push rod, a telescopic water pipe, a water pump and a filter. The cleaning head is connected to the water pump through the telescopic water pipe, the electric push rod is connected to the cleaning head, and the filter is arranged at the water inlet of the water pump for filtering impurities.

4. The water quality detection device according to claim 1, characterized in that: The horizontal connecting shaft comprises two first connecting shafts arranged in parallel and a second connecting shaft arranged between the two first connecting shafts, the second connecting shaft is translatable along the two first connecting shafts, and the two sensor connecting shafts are vertically connected to the second connecting shafts.

5. The water quality detection device according to claim 1, characterized in that: It also includes a blowing device, which is connected to the water body through a pipeline, and the blowing device adjusts the oxygen supply through the control device.

6. Application of the water quality detection device according to any one of claims 1 to 5 in sewage treatment or aquaculture.

7. A control method for a water quality detection device, characterized in that: include: Move the sensor connecting shaft in the horizontal and vertical directions, and start the main water quality detection sensor to perform real-time detection to obtain real-time detection results; The water quality detection and calibration sensor is started from time to time to detect the water quality of the water body near the water quality detection main sensor to obtain the calibration detection result. After the detection is completed, the water quality detection and calibration sensor is controlled to leave the water body and enter the water body again when working next time; The real-time detection result is compared with the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the result of the main water quality detection sensor is accurate; When the comparison result exceeds the threshold, it is determined that the water quality detection main sensor is contaminated or damaged, and the control device controls the water quality detection main sensor to leave the water body along the sensor connection axis for cleaning or maintenance.

8. The control method according to claim 7, characterized in that: When the comparison result exceeds the threshold, it is determined that the main water quality detection sensor is contaminated or damaged, and the control device controls the main water quality detection sensor to leave the water body along the sensor connection axis for cleaning or maintenance, including: When the comparison result exceeds the threshold, the water quality detection main sensor is controlled to leave the water body and be cleaned. After cleaning, the water quality detection main sensor is controlled to return to the water body for re-detection, and the re-detection result is compared with the calibration detection result. When the comparison result does not exceed the threshold, it is determined that the water quality detection main sensor can continue to be used for water quality detection after cleaning. When the comparison result exceeds the threshold for multiple times, it is determined that the water quality detection main sensor needs to be repaired or replaced.

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