A water quality detection device for agricultural water

Abstract

The present invention discloses a water quality detection device for agricultural water, which relates to the technical field of agricultural water and soil engineering. The technical key points are as follows: the device includes a water quality detection component, a water pumping component and an energy supply component, and can collect water samples of different depths through an electronic water pump for multi-layer water quality analysis. The device is equipped with a multi-parameter water quality detector, which can detect water quality parameters such as pH value, TDS value, heavy metal concentration, etc., to achieve automatic water quality monitoring. The device is based on a single-chip microcomputer control system, and automatically completes water sample collection, detection, data processing and display, simplifying the operation process. The device is powered by solar energy, has self-power supply capability, and is suitable for outdoor use. Its unique structural design includes casing protection, conical top cover and absorbent cotton protection functions, which can effectively prevent the influence of external environment such as rain, dust, etc. on the equipment, extend the life of the equipment, and is very suitable for farmland irrigation water quality detection, monitoring water sources such as lakes and rivers, and ensuring the safety of irrigation water.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural water and soil engineering, and in particular to a water quality detection device for agricultural water. Background Art

[0002] With the rapid development of industrialization and urbanization, water pollution has become increasingly serious and has become one of the key issues that need to be urgently addressed in the field of global environmental protection. Water pollution not only affects the ecological environment, but also poses a major threat to agricultural production and human health. Therefore, water quality testing has become an important means to ensure the safety and sustainable management of agricultural water sources. Traditional water quality testing methods often rely on laboratory analysis, which requires sampling, transportation and complex testing procedures. Although accurate, they have a long cycle and cannot meet the needs of real-time monitoring in agricultural production.

[0003] To solve this problem, portable and automated water quality testing equipment has gradually become a research hotspot. These devices can conduct real-time monitoring on-site at agricultural irrigation water sources such as rivers and lakes, reducing the error and time cost of sample transportation, while greatly improving the efficiency of data acquisition. Especially in agricultural irrigation, water quality at different depths often varies, so synchronous sampling and testing of different water layers is crucial to fully understand the water source conditions.

[0004] Most of the existing portable water quality detection devices for agricultural water can only detect the quality of a single water layer or surface water, and it is difficult to achieve synchronous collection and detection of water bodies at different depths. In addition, the energy supply of many devices depends on external power supplies or batteries, which limits their use time and stability in complex outdoor environments. When used for a long time or in extreme environments, the precision instruments inside the device are easily affected by external factors such as rain and dust, and then damaged or lose detection accuracy. Therefore, there is an urgent need for an automated, multi-level agricultural water quality detection device that can adapt to diverse environmental conditions to achieve comprehensive monitoring of water bodies and extend the service life of the equipment. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a water quality detection device for agricultural water.

[0006] In order to achieve the above-mentioned object, the technical scheme of the present invention is as follows: a water quality detection device for agricultural water, comprising a water quality detection component, a pumping component and an energy supply component, wherein the pumping component pumps water from a lake or a river into the water quality detection component for water quality detection, and the energy supply component provides electrical energy to the water quality detection component and the pumping component;

[0007] The water quality detection component includes a base, three detection tubes are provided in the middle of the top of the base, a pumping component is provided in the middle of the bottom of the base, the pumping component includes three electronic water pumps, the pumping ends of the three electronic water pumps are provided with branch pipes, the water inlet ends of the three electronic water pumps are respectively connected to the three detection tubes, the three branch pipes are inserted into the pumping pipes in parallel, the three branch pipes are of different lengths, corresponding to different water depths in lakes or rivers, electronic valves are provided on one side of the bottom of the three detection tubes, the base is provided with three drainage holes, and the three electronic valves are connected to the three drainage holes; four support rods are provided around the top of the base, a telescopic motor is connected in the middle of the top of the four support rods, a telescopic end is provided at the bottom of the telescopic end, three multi-parameter water quality detectors are provided at the bottom of the telescopic end, the three multi-parameter water quality detectors are located directly above the three detection tubes, and a chassis is provided at the top of the telescopic motor;

[0008] The chassis includes a battery, a single-chip microcomputer, and a display control mechanism. The battery is electrically connected to the single-chip microcomputer, the display control mechanism, the electronic water pump, the electronic valve, the telescopic motor, and the multi-parameter water quality detector. The single-chip microcomputer is electrically connected to the display control mechanism, the electronic water pump, the electronic valve, the telescopic motor, and the multi-parameter water quality detector.

[0009] The energy supply component includes a solar panel, which is electrically connected to a battery. Conical top covers are provided at the top ends of two of the four support rods, which are located above the chassis. A connecting rod is provided at the top end of the conical top cover, and a solar panel is provided at one end of the connecting rod away from the top cover.

[0010] By adopting the above technical solution, 3 groups of test water samples are set up. Through 3 branches of different lengths, the surface, middle and deep water in the irrigation water source (lake or river) are collected into 3 test tubes in cooperation with the pumping pipe and the electronic water pump. Then, by controlling the telescopic motor, 3 multi-parameter water quality detectors are extended into the water sample to complete the water quality test at different depths. After the test is completed, the water sample is discharged through the electronic valve and the drain hole to complete a test. Battery: The battery is set inside the chassis to provide stable power support for the entire system. Single-chip microcomputer: As the control core, the single-chip microcomputer is responsible for coordinating the work of various components, including pumping, testing and data transmission.

[0011] Display control mechanism: used to display water quality test results and system status for easy monitoring; Solar energy supply: The energy supply components include solar panels, which are connected to batteries and convert sunlight into electrical energy to power the water quality detection device for agricultural water. The top cover is conical in design and is used in conjunction with the casing to effectively prevent rainfall from directly wetting the precision instruments in the device on rainy days, avoiding the risk of circuit short circuit due to water entering.

[0012] Preferably, four support rods are provided at the bottom end of the base.

[0013] By adopting the above technical solution, the device is lifted by a support rod of a certain length, thereby preventing the device from being submerged when the water level of a river or lake rises to a certain extent.

[0014] Preferably, a protective tube 1 is provided in the middle of the bottom end of the base, a protective tube 2 is provided in the middle of the top end of the base, and a protective tube 3 is provided at the bottom end of the conical top cover. The protective tube 1 is used to protect the electronic water pump, the protective tube 2 is used to protect three detection tubes, and the protective tube 3 is used to protect the telescopic motor and the multi-parameter water quality detector. The display control mechanism is located on the outer wall of the protective tube 3.

[0015] By adopting the above technical solution, the three casings provide effective protection for the more fragile components in the device, thereby improving the durability of the device and extending its service life.

[0016] Preferably, the probe of the multi-parameter water quality detector is composed of three sensors including a TDS sensor, an electrochemical sensor and a temperature sensor.

[0017] By adopting the above technical solutions, there are a variety of ways to match detection data. One is the combination of PH detection + heavy metal concentration detection + temperature detection, the second is the combination of PH detection + TDS detection + temperature detection, and the third is PH detection + heavy metal concentration detection ++ TDS detection + temperature detection. These solutions can be adjusted according to specific agricultural needs and water source conditions, and comprehensive use of data from different sensors can be used to provide comprehensive water quality monitoring solutions.

[0018] Preferably, the inner walls of the second and third protective tubes are provided with adhesive strips, and the two adhesive strips are detachably connected with absorbent cotton.

[0019] By adopting the above technical solution, the absorbent cotton in the second protective tube can effectively prevent debris in the external environment, such as rainwater, dust, garbage, etc. from entering the device and polluting the equipment. The absorbent cotton needs to be replaced regularly. The absorbent cotton in the third protective tube not only has the protective function of the absorbent cotton in the second protective tube, but also can wipe the residual water on the multi-parameter water quality tester after each test is completed, keeping the equipment clean and maintaining its accuracy.

[0020] Preferably, a water level sensor is provided on one side of the inner wall of each of the three detection tubes, and the three water level sensors are electrically connected to a battery and a single-chip microcomputer, respectively.

[0021] By adopting the above technical solution, a water level sensor is used in conjunction with an electronic water pump to avoid excessive water sample collection and overflow of the detection tube.

[0022] Preferably, the bottom ends of the three detection tubes are each provided with a slope, and the water inlets of the three electronic valves are located at the bottom of the three slopes.

[0023] By adopting the above technical solution and using a slope, the drainage sample can be drained as cleanly as possible each time, reducing the impact on subsequent water samples.

[0024] Preferably, a counterweight is provided at the bottom of the pumping pipe, and the counterweight is placed on the bottom of a lake or a river. The lengths of the three branch pipes correspond to the surface layer, middle layer and deep layer of the lake or river respectively.

[0025] By adopting the above technical solution, the water pumping pipe is fixed by the counterweight block to prevent it from floating up or being washed away by the water flow, and the point of each water sample collection is kept fixed as much as possible.

[0026] The present invention also provides a control system based on the above-mentioned water quality detection device for agricultural water, the system comprising a central control module, a pumping control module, a valve control module, a water quality detection module, a power management module and a display module;

[0027] The central control module serves as the control core of the system and is responsible for coordinating the work of various components;

[0028] The pumping control module is used to control the start and stop of the electronic water pump;

[0029] The valve control module is used to control the switch of the electronic valve;

[0030] The water quality detection module is used to control the extension and retraction of the telescopic end of the telescopic motor and the switch of the multi-parameter water quality detector;

[0031] The power management module is responsible for managing the power supply and solar charging;

[0032] The display module is used to display the water quality test results and system status in real time.

[0033] The present invention also provides a water quality detection method based on the above-mentioned water quality detection device for agricultural water, comprising the following steps:

[0034] S1. Water sample collection: Start the electronic water pump to pump water from three locations into the detection tube. The water level sensor monitors the water level in the detection tube. When it reaches the set position, turn off the electronic water pump.

[0035] S2, water quality detection: start the telescopic motor, control the extension length of the telescopic end, and extend the detection ends of the three multi-parameter water quality detectors into the incoming water sample for detection;

[0036] S3, data processing and display: the single chip microcomputer processes the data sent back by the multi-parameter water quality detector and updates the results through the display module;

[0037] S4, drainage: After the test is completed, the valve control module opens the electronic valve to discharge the water sample;

[0038] S5, cyclic operation: set the detection cycle and repeat S1-S4 operations.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] Multi-layer water sample collection: Through branch pipes of different lengths and electronic water pumps, the surface, middle and deep water samples in lakes or rivers can be collected simultaneously, which can provide a more comprehensive understanding of the water quality conditions at each depth of the water body and solve the problem that traditional equipment can only collect single water layers.

[0041] Real-time multi-parameter water quality detection:

[0042] Multi-parameter real-time monitoring: The device supports simultaneous detection of multiple water quality parameters such as pH, TDS, heavy metal concentration and temperature, providing comprehensive water quality information to help local agricultural producers more accurately assess the health of water sources.

[0043] Improve detection accuracy: Through historical data analysis and multi-parameter comparison, the device can effectively reduce the interference between the detection values, improve the ability to accurately analyze water quality changes, and provide reliable data support for agricultural water use.

[0044] Automatic control system: Based on the automatic operation of pumping, detection and drainage controlled by single chip microcomputer, combined with water level sensor, it ensures accurate water sample collection and avoids overflow, ensures the intelligence and convenience of equipment operation, and adapts to the needs of agricultural environment.

[0045] Self-powered system: The device is equipped with solar energy components, which provide power support for the equipment through solar panels to extend the working time. It is particularly suitable for outdoor or agricultural environments where power cannot be connected.

[0046] Structural design of the protection device: The protective tube design and conical top cover of the device effectively protect the electronic water pump, detection tube, multi-parameter water quality detector and other precision components, prevent the intrusion of the external environment (such as rain, dust), thereby extending the service life of the equipment.

[0047] Water-absorbent cotton protection and cleaning function: Water-absorbent cotton is set inside the casing, which can not only prevent external impurities from entering the device, but also wipe the multi-parameter water quality detector after each test to ensure that the equipment remains clean, maintain the test accuracy, and ensure the safety of agricultural irrigation water. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a schematic diagram of the overall structure of the detection device in an embodiment of the present invention;

[0049] Figure 2 It is a schematic diagram of the partial structure of the detection device in an embodiment of the present invention;

[0050] Figure 3is a cross-sectional view of the water pumping pipe structure in an embodiment of the present invention;

[0051] Figure 4 2 is a schematic diagram of the structure of a pumping assembly in an embodiment of the present invention;

[0052] Figure 5 is a partial structural cross-sectional view of a detection device in an embodiment of the present invention;

[0053] Figure 6 is a partial structural cross-sectional view of a detection device in an embodiment of the present invention;

[0054] Figure 7 It is a schematic diagram of the installation and operation of the detection device in an embodiment of the present invention;

[0055] Figure 8 It is a diagram of the system framework of the detection device in an embodiment of the present invention;

[0056] Fig. 9 It is a flow chart of the detection method in an embodiment of the present invention.

[0057] In the figure: 1. Water quality detection component; 101. Support rod one; 102. Casing one; 103. Base; 104. Support rod two; 105. Conical top cover; 106. Connecting rod; 107. Drain hole; 108. Chassis; 109. Battery; 110. Single chip microcomputer; 2. Suction pipe; 201. Electronic water pump; 202. Branch pipe; 203. Counterweight; 3. Casing two; 301. Detection tube; 302. Sticky strip; 303. Water level sensor; 304. Electronic valve; 305. Slope; 4. Casing three; 401. Display control mechanism; 402. Telescopic motor; 403. Telescopic end; 404. Multi-parameter water quality detector; 5. Solar panel; 6. Water absorbent cotton. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme of the present invention will be further described in detail below in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only embodiments of a part of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work should belong to the scope of protection of the present invention. In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0059] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0060] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below in conjunction with the embodiments.

[0061] Embodiment 1:

[0062] The detection configuration of this embodiment is a combination of pH detection + heavy metal concentration detection + temperature detection.

[0063] 1. Device structure

[0064] like Figure 1-7 As shown, the water quality detection device for agricultural water of the present invention comprises a water quality detection component 1, a water pumping component and an energy supply component. The specific structure is as follows:

[0065] Water quality detection component 1: The water quality detection component 1 includes a base 103, and three detection tubes 301 are provided in the middle of the top of the base 103 for collecting water samples of different water depths. Four support rods 101 are arranged around the bottom of the base 103, and a pumping assembly is arranged in the middle of the bottom of the base 103. The pumping assembly includes three electronic water pumps 201. The water outlet end of each electronic water pump 201 is respectively connected to three detection tubes 301, and the water inlet ends of the three electronic water pumps 201 are respectively connected to three branch pipes 202 of different lengths. The lengths of the three branch pipes 202 are specially designed according to the actual water depth, and the purpose is to be used for extracting surface, middle and deep water samples in lakes or rivers. The three branch pipes 202 are inserted into the pumping pipe 2 in parallel, and the pumping pipe 2 is provided with three openings (corresponding to the surface, middle and deep layers in lakes or rivers). The water inlet ends of the three branch pipes 202 are respectively fixedly connected to the three openings of the pumping pipe 2, and a counterweight block 203 is connected to the bottom of the pumping pipe 2 to prevent the pumping pipe 2 from being washed away by the water flow during use. Each detection tube 301 is provided with an electronic valve 304 at the bottom, which is connected to the drain hole 107 of the base 103. The electronic valve 304 is designed in conjunction with the slope 305 at the bottom of the detection tube 301, so that the water sample can be quickly discharged after the detection is completed. Four support rods 104 are arranged around the top of the base 103, and a telescopic motor 402 is connected to the middle of the top of these support rods. Three multi-parameter water quality detectors 404 are arranged at the bottom of the telescopic end 403 of the telescopic motor 402. The telescopic motor 402 can control the up and down movement of the three multi-parameter water quality detectors 404. The multi-parameter water quality detectors 404 are located directly above each detection tube 301, and can accurately probe into the water sample when conducting water quality detection. The detection parameters of the multi-parameter water quality detector 404 include: pH value, TDS value, conductivity, heavy metal content, etc.

[0066] Chassis 108 and power system: Chassis 108 includes battery 109, single chip microcomputer 110, and display control mechanism 401. Battery 109 provides power for the entire system, and single chip microcomputer 110 is responsible for coordinating and controlling the work of water pump, valve, telescopic motor 402 and multi-parameter water quality detector 404. Display control mechanism 401 is used to display water quality test results and equipment operation status.

[0067] Solar energy supply component: The energy supply component includes a solar panel 5, which is fixedly connected to the conical top cover 105 through a connecting rod 106. The solar panel 5 provides charging support for the battery 109 through an electrical connection to ensure that the device can operate stably for a long time outdoors.

[0068] Casing design: including casing one 102, casing two 3, and casing three 4. Casing one 102 is used to protect the electronic water pump 201, casing two 3 is used to protect three detection tubes 301, and casing three 4 is used to protect the telescopic motor 402 and the multi-parameter water quality detector 404. Casing two 3 and casing three 4 are spaced apart to facilitate the staff to regularly maintain the device and do pure water calibration. The design of the casing prevents the influence of the external environment and prolongs the service life of the device.

[0069] The inner walls of the second protective tube 3 and the third protective tube 4 are both provided with adhesive strips 302, and the two adhesive strips 302 are detachably connected with absorbent cotton 6.

[0070] There is a direct gap between the second protective tube 3 and the third protective tube 4, and debris in the external environment, such as rainwater, dust, garbage, etc., can easily float into the second protective tube 3. The absorbent cotton 6 can effectively prevent debris in the external environment from entering the device and polluting the equipment. A sticky strip 302 is provided at the connection between the absorbent cotton 6 and the second protective tube 3, and the two are connected by Velcro. The absorbent cotton 6 is very easy to replace and is replaced regularly to keep the barrel clean. The absorbent cotton 6 in the protective tube three 4 is designed to be consistent with the protective tube two 3, but it not only has the protective function of the absorbent cotton 6 in the protective tube two 3, but can also wipe the residual moisture on the multi-parameter water quality detector 404 after each detection is completed (the wiping principle is: the absorbent cotton 6 on the protective tube three 4 is provided with 3 small holes, the inner diameter of the holes is slightly smaller than the detection head of the multi-parameter water quality detector 404, and when the telescopic motor 402 is operated to make it move back and forth up and down, the detection head of the multi-parameter water quality detector 404 will pass through the holes of the absorbent cotton 6, which will generate friction and complete the wiping operation) to complete simple cleaning operations and maintain its accuracy.

[0071] like Figure 8 As shown, the water quality detection device for agricultural water of the present invention is also equipped with a control system based on a single chip microcomputer 110, including the following modules:

[0072] Central Control Module: As the core of the entire system, it is responsible for coordinating the work of various components, including pumping, valve control, water quality testing and power management.

[0073] Pumping control module: used to control the start and stop of the electronic water pump 201 to ensure that water samples are extracted from different depths.

[0074] Valve control module: responsible for controlling the opening and closing of the electronic valve 304 and discharging the water sample after the detection is completed.

[0075] Water quality detection module: controls the telescopic action of the telescopic motor 402 to ensure that the multi-parameter water quality detector 404 can accurately probe into the water sample.

[0076] Power management module: responsible for the power management of the battery 109 and supports the charging function of the solar panel 5.

[0077] Display module: used to display real-time data of water quality detection and system status for user monitoring.

[0078] Implementation steps:

[0079] 1. Equipment site selection and installation

[0080] Choose a relatively flat place around the agricultural irrigation water source (river or lake), drive piles and fix four support rods 101, level the top with a spirit level, and then install the base 103, electronic water pump 201, detection tube 301, telescopic motor 402, chassis 108, etc. in sequence.

[0081] Measure the water depth at the water source, set up a corresponding length of the water pumping pipe 2, then put the counterweight 203 into the water source at an appropriate distance from the device, and finally put the water pumping pipe 2 into the water, and connect the bottom end of the water pumping pipe 2 to the counterweight 203. Figure 7 The following is a schematic diagram after installation is completed.

[0082] 2. Operation process

[0083] like Fig. 9 As shown, the operation method is as follows:

[0084] S1. Water sampling

[0085] The pumping control module is started to control the electronic water pump 201 to start, and the surface, middle and deep water samples are extracted from different depths of the lake or river through the branch pipes 202 of different lengths. The water level sensor 303 monitors the water level in the detection tube 301. When the water level reaches the set position, the electronic water pump 201 is turned off to prevent too much water sample from entering.

[0086] S2. Water quality testing

[0087] The water quality detection module is started, the telescopic motor 402 is started and the detection end of the multi-parameter water quality detector 404 with three sensors is accurately inserted into the water sample in the detection tube 301 to perform multi-parameter water quality detection.

[0088] The combined multi-parameter water quality detector 404 includes three sensors, a pH sensor (electrochemical sensor), a heavy metal sensor (electrochemical sensor), and a temperature sensor (thermal resistance RTD).

[0089] S201. Detection methods and principles

[0090] Start the multi-parameter water quality detector 404, select the detection mode, and allow each sensor to warm up or stabilize to ensure accurate measurement results.

[0091] pH Sensor:

[0092] The pH sensor measures the hydrogen ion concentration in the water sample in real time through an electrochemical reaction and converts it into an electrical signal, which is sent to the microcontroller 110 and displayed as a corresponding pH value after analog-to-digital conversion.

[0093] The system is set to record the pH value at a certain interval (for example, every second) to ensure stable measurement results and update it in real time on the display.

[0094] Heavy Metal Sensor:

[0095] The heavy metal sensor detects the concentration of heavy metal ions in water samples, such as lead, cadmium, copper, etc., through electrochemical methods (customized according to actual needs, using electrode materials sensitive to corresponding heavy metal ions). The sensor will generate the corresponding heavy metal concentration value according to the current change.

[0096] The system is set to record the heavy metal value only once each time the water quality is tested, and transmit the result to the single chip computer 110 and display it on the display screen.

[0097] Temperature Sensor:

[0098] The temperature sensor monitors the temperature change of the water sample through the principle of thermal resistance. Its built-in resistor material produces different resistance values ​​as the temperature changes, and the system will measure and calculate the temperature of the water sample in real time.

[0099] The system displays the temperature data on the screen at a frequency of once per second, ensuring that users can understand water temperature changes in a timely manner.

[0100] S3. Data processing and display

[0101] The single-chip microcomputer 110 processes the data sent back by the multi-parameter water quality detector 404, and updates the water quality test results in real time through the display module. It is equipped with a 4G or 5G transmission module, and the test data can be sent back to the user's mobile terminal or PC for display. The data collected by all sensors will be sent to the single-chip microcomputer 110 at the same time. The single-chip microcomputer 110 will integrate the pH value, heavy metal concentration and temperature collected in real time, and the single-chip microcomputer 110 will store the integrated data in the internal memory for subsequent analysis and review.

[0102] The data processing process includes algorithms such as noise removal and smoothing to ensure the reliability and accuracy of the measurement data.

[0103] S301. Data recording and export:

[0104] After the test is completed, the system will automatically generate a data report, including the specific values ​​of various water quality parameters, measurement time and location and other information.

[0105] Users can choose to export data to a USB device or send it to a mobile phone or computer via Bluetooth / Wi-Fi for further analysis and archiving.

[0106] Since there is a mutual influence between pH value, heavy metal concentration and temperature, for example, an increase in temperature usually increases the mobility of ions, thereby improving conductivity, which in turn affects the detection results of heavy metal concentration. In addition, pH will also change the existence form of certain ions, indirectly affecting the measurement of conductivity and heavy metal concentration. Therefore, when a single parameter is detected, it is difficult to accurately analyze the root cause of the change in water quality. The multi-parameter water quality detector 404 can effectively solve this problem. Through historical test data, the changes in heavy metal concentrations can be compared under similar temperature and pH conditions, so as to more accurately analyze the changing trends of heavy metal concentrations. This method provides strong support for agricultural producers, helping them to judge the specific circumstances of water quality changes and more accurately assess the health of water sources.

[0107] S4. Drainage

[0108] After the detection is completed, the valve control module opens the electronic valve 304, and the water sample is discharged through the drainage hole 107, completing the detection process.

[0109] S5. Cycle operation

[0110] According to the preset detection cycle, the system repeats steps S1-S4 to conduct continuous water quality monitoring. The detection cycle can be set to 3 days / 7 days / 15 days, depending on the single energy supply cycle of the device, the energy consumption of a single detection, and the detection requirements.

[0111] 3. Maintenance method

[0112] 1) Pure water calibration

[0113] Staff are required to perform pure water calibration regularly every 15 days or 1 month, depending on the frequency of instrument use, to ensure data accuracy.

[0114] 2) Equipment maintenance

[0115] The staff needs to regularly replace the absorbent cotton 6, regularly wipe the sensor elements on the multi-parameter detector, and regularly replace the electrochemical sensor electrodes to extend the service life of the device while ensuring the accuracy of water quality detection.

[0116] Embodiment 2:

[0117] The difference between this embodiment and the first embodiment is that the multi-parameter water quality detector 404 is a combination of pH detection + TDS detection + temperature detection.

[0118] Function:

[0119] pH detection sensor: Real-time monitoring of the pH value of irrigation water. Too high or too low pH value will affect crop growth. Through monitoring, the irrigation plan can be adjusted in time.

[0120] TDS sensor: measures the total dissolved solids in water and displays the concentration of minerals and salts in the water. The level of TDS directly affects the health of soil and crops.

[0121] Temperature detection sensor: monitors water temperature. Temperature affects the dissolved oxygen content of water, which in turn affects the health of plant roots and the ecological stability of water bodies.

[0122] Purpose:

[0123] Monitor and control the quality of irrigation water to ensure it is suitable for crop growth.

[0124] Timely identification of unsuitable water quality parameters can help avoid potential damage to crops by adjusting irrigation methods or water sources.

[0125] Effect:

[0126] Improve yield and quality: Ensure that water quality meets the needs of crop growth, and avoid problems such as excessive acidity or alkalinity, inappropriate water temperature, etc. that affect crop growth.

[0127] Precision irrigation management: Dynamically adjust irrigation plans based on water quality monitoring results to reduce excessive fertilization and water waste.

[0128] Environmental protection and cost control: Reduce unnecessary dissolved solids in irrigation water, reduce the risk of soil salinization, and reduce the cost of subsequent soil improvement.

[0129] Embodiment 3:

[0130] This embodiment includes the detection functions of the first and second embodiments, the difference being that the multi-parameter water quality detector 404 is a combination of pH detection + heavy metal detection + TDS detection + temperature detection.

[0131] Embodiment 1 is applicable to agricultural areas with pollution risks, especially farmland with high food safety requirements, and is suitable for planting rice, vegetables, fruit trees and other planting scenes where crop safety needs to be guaranteed. This embodiment combination is used for water sources with potential heavy metal contamination or in irrigation of farmland near industrial discharge areas.

[0132] Example 2 is suitable for routine monitoring of general agricultural water sources, especially those irrigation scenarios that do not require high water quality but require stable pH and appropriate TDS. This embodiment combination is suitable for crops such as vegetables, rice, and cotton that have basic requirements for water quality, ensuring that the water source does not have obvious acid-base deviation or excessive mineral concentration.

[0133] Example 3 is suitable for all agricultural scenarios, especially high-value agricultural projects with strict requirements on water quality, including precision agriculture, greenhouse planting, greenhouse fruits and vegetables, and special economic crops. This combination of examples is suitable for agriculture with high water quality requirements, such as tea gardens, orchards, and flower planting; it is also suitable for areas with high pollution risks for continuous monitoring of water source safety.

[0134] In summary:

[0135] Option 1 is suitable for areas with pollution risks, especially heavy metal pollution, and has high equipment costs.

[0136] Option 2 is applicable to general agricultural water use, has low cost, and is suitable for routine irrigation monitoring.

[0137] Option 3 has the most powerful functions and is suitable for high-value agricultural projects, but it also has the highest cost and is suitable for refined agricultural management.

[0138] The above specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A water quality detection device for agricultural water, characterized in that: It comprises a water quality detection component (1), a water pumping component and an energy supply component, wherein the water pumping component pumps water from a lake or a river into the water quality detection component (1) for water quality detection, and the energy supply component provides electrical energy to the water quality detection component (1) and the water pumping component; The water quality detection component (1) comprises a base (103), wherein three detection tubes (301) are arranged in the middle of the top of the base (103), and a pumping component is arranged in the middle of the bottom of the base (103), wherein the pumping component comprises three electronic water pumps (201), wherein the pumping ends of the three electronic water pumps (201) are all provided with branch pipes (202), wherein the water inlet ends of the three electronic water pumps (201) are respectively connected to the three detection tubes (301), wherein the three branch pipes (202) are inserted into the pumping pipe (2) in parallel, wherein the three branch pipes (202) are of different lengths and correspond to different water depths in a lake or a river, and wherein one side of the bottom of the three detection tubes (301) is provided with an electronic valve ( 304), the base (103) is provided with three drainage holes (107), and the three electronic valves (304) are connected to the three drainage holes (107); four support rods (104) are provided around the top of the base (103), and a telescopic motor (402) is connected in the middle of the top of the four support rods (104), and the bottom of the telescopic motor (402) is provided with a telescopic end (403), and the bottom of the telescopic end (403) is provided with three multi-parameter water quality detectors (404), and the three multi-parameter water quality detectors (404) are located directly above the three detection tubes (301), and a chassis (108) is provided at the top of the telescopic motor (402); The chassis (108) comprises a battery (109), a single-chip computer (110), and a display control mechanism (401); the battery (109) is electrically connected to the single-chip computer (110), the display control mechanism (401), the electronic water pump (201), the electronic valve (304), the telescopic motor (402), and the multi-parameter water quality detector (404); and the single-chip computer (110) is electrically connected to the display control mechanism (401), the electronic water pump (201), the electronic valve (304), the telescopic motor (402), and the multi-parameter water quality detector (404); The energy supply assembly comprises a solar cell panel (5), the solar cell panel (5) is electrically connected to a battery (109), a conical top cover (105) is provided at the top end of the second of the four support rods (104), the conical top cover (105) is located above the chassis (108), a connecting rod (106) is provided at the top end of the conical top cover (105), and the solar cell panel (5) is provided at one end of the connecting rod (106) away from the top cover; A protective tube 1 (102) is provided at the middle of the bottom end of the base (103), a protective tube 2 (3) is provided at the middle of the top end of the base (103), and a protective tube 3 (4) is provided at the bottom end of the conical top cover (105). The protective tube 1 (102) is used to protect the electronic water pump (201), the protective tube 2 (3) is used to protect the three detection tubes (301), and the protective tube 3 (4) is used to protect the telescopic motor (402) and the multi-parameter water quality detector (404). The display control mechanism (401) is located on the outer wall of the protective tube 3 (4); The inner walls of the second protective tube (3) and the third protective tube (4) are both provided with adhesive strips (302), and the two adhesive strips (302) are detachably connected with absorbent cotton (6).

2. A water quality detection device for agricultural water according to claim 1, characterized in that: Four support rods (101) are provided at the bottom end of the base (103).

3. The water quality detection device for agricultural water according to claim 1, characterized in that: The probe of the multi-parameter water quality detector (404) is composed of three sensors including a TDS sensor, an electrochemical sensor and a temperature sensor.

4. The water quality detection device for agricultural water according to claim 1, characterized in that: One side of the inner wall of each of the three detection tubes (301) is provided with a water level sensor (303), and the three water level sensors (303) are electrically connected to the battery (109) and the single-chip computer (110) respectively.

5. The water quality detection device for agricultural water according to claim 1, characterized in that: The bottom ends of the three detection tubes (301) are all provided with slopes (305), and the water inlets of the three electronic valves (304) are located at the bottoms of the three slopes (305).

6. The water quality detection device for agricultural water according to claim 1, characterized in that: A counterweight (203) is provided at the bottom of the water pumping pipe (2), and the counterweight (203) is placed on the bottom of a lake or a river. The lengths of the three branch pipes (202) correspond to the surface layer, middle layer and deep layer of the lake or river respectively.

7. A water quality detection device for agricultural water according to claim 4, characterized in that: It also includes a control system, which includes a central control module, a pumping control module, a valve control module, a water quality detection module, a power management module and a display module; The central control module serves as the control core of the system and is responsible for coordinating the work of various components; The water pumping control module is used to control the start and stop of the electronic water pump (201); The valve control module is used to control the switch of the electronic valve (304); The water quality detection module is used to control the extension and retraction of the telescopic end (403) of the telescopic motor (402) and the switch of the multi-parameter water quality detector (404); The power management module is responsible for managing the power supply and solar charging; The display module is used to display the water quality test results and system status in real time.

8. A water quality detection device for agricultural water according to claim 7, characterized in that: The detection method of the water quality detection device for agricultural water comprises the following steps: S1, water sample collection: start the electronic water pump (201) to pump water from three locations in the water into the detection tube (301), the water level sensor (303) monitors the water level of the water sample in the detection tube (301), and when the water level reaches a set position, the electronic water pump (201) is turned off; S2, water quality detection: start the telescopic motor (402), control the extension length of the telescopic end (403), and extend the detection ends of the three multi-parameter water quality detectors (404) into the incoming water sample for detection; S3, data processing and display: the single chip microcomputer (110) processes the data sent back by the multi-parameter water quality detector (404) and updates the result through the display module; S4, drainage: After the detection is completed, the valve control module opens the electronic valve (304) to discharge the water sample; S5, cyclic operation: set the detection cycle and repeat S1-S4 operations.

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