Double-channel ultrasonic water meter and working method thereof

Abstract

The invention provides a double-channel ultrasonic water meter and a working method thereof, and relates to the technical field of flow monitoring, and the double-channel ultrasonic water meter comprises a first pipe section, a second pipe section, a base, a fixed pressing plate, a reflecting plate, a reflecting lens, an ultrasonic transducer, a temperature probe, a control panel battery, an electronic dial plate battery, an electronic dial plate, a control panel, an arithmetic unit, an NB-IoT unit, a control unit and a supporting plate. When the water meter is used, feed water enters the water meter from an inlet of the first pipe section, return water enters the water meter from an inlet of the second pipe section, the arithmetic unit calculates a flow difference value of the first pipe section and the second pipe section and transmits the flow difference value to the NB-IoT unit, the NB-IoT unit transmits a flow signal of the water meter to the control center, and the control center calculates water fees through the charging system. Two-channel metering is achieved through one water meter, direct drinking water is circulated through the branch pipes, it is guaranteed that water is fresh, and investment cost is reduced. And meanwhile, the water temperature detected by the temperature probe corrects the water quality index TDS, so that the accuracy of the TDS measured value is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of flow monitoring, and in particular to a dual-channel ultrasonic water meter and a working method thereof. Background Art

[0002] With the rapid development of the healthy drinking water market, the demand for the construction of piped drinking water systems has increased significantly. Ultrasonic water meters have been widely used in the field of drinking water due to their many advantages such as high measurement accuracy, strong adaptability to water quality and high sensitivity. However, the water circulation design of existing piped drinking water systems has certain limitations and it is difficult to fully meet users' dual needs for drinking water quality and water conservation.

[0003] At present, the circulating water flow of the piped drinking water system is mainly achieved through the riser, and the water in the branch pipe is usually not involved in the circulation. When the office building is vacant on weekends or statutory holidays, and the residential building is unoccupied for a long time, the drinking water in the branch pipe may stay in the pipe for too long, causing the water quality to deteriorate. To avoid using low-quality stale water, the current common solution is to open the tap and let the drinking water flow for a while before taking water to drain the stale water in the branch pipe, but this practice not only wastes water resources, but also reduces the efficiency of use.

[0004] Another improvement is to set up a water nozzle circulation pipe so that the water in the branch pipe can also circulate regularly, thereby reducing the problem of water quality deterioration. However, this design has caused a new technical challenge, namely the problem of water consumption measurement. If only one water meter is installed in the pipeline, it is difficult to accurately obtain the actual water intake of the user. In order to accurately measure, it is usually necessary to measure the flow of the water supply branch pipe and the return branch pipe at the same time and calculate the difference between the two. However, this method not only requires each household to install two water meters, which significantly increases the investment cost, but also may affect the accuracy of measurement due to factors such as water meter reading errors.

[0005] Therefore, how to reduce water waste while achieving branch pipe circulation and optimize the metering scheme to improve cost-effectiveness and metering accuracy has become an urgent problem that needs to be solved by current technology. Summary of the invention

[0006] In order to solve the technical problems in the prior art that water in branch pipes cannot participate in circulation, resulting in water quality deterioration, stale water needs to be discharged before water is used, resulting in waste of water resources, and high metering cost and insufficient metering accuracy in the branch pipe circulation scheme, the present invention provides a dual-channel ultrasonic water meter and a working method thereof.

[0007] The technical solution provided by the present invention is as follows: First aspect: The present invention provides a dual-channel ultrasonic water meter, comprising: a first pipe section, a second reflecting plate, and a second reflecting plate; The first reflecting plate and the second reflecting plate are fixedly provided in the first pipe section, and the first reflecting plate and the second reflecting plate are symmetrically arranged relative to the cross section of the first pipe section. The first reflecting lens and the second reflecting lens are fixedly provided at two ends of the first reflecting plate and the second reflecting plate close to each other, respectively. The first reflecting lens and the second reflecting lens form an angle of 45 degrees with the axis of the first pipe section respectively and are perpendicular to each other. The first ultrasonic transducer and the second ultrasonic transducer are fixedly provided on the same side of the first pipe section, and the signal emitted by the second ultrasonic transducer is reflected by the second reflecting lens to the first reflecting lens and then reflected to the first ultrasonic transducer.

[0008] Furthermore, the first ultrasonic transducer and the second ultrasonic transducer are fixedly arranged by opening a transducer hole on the first pipe section.

[0009] Furthermore, it also includes a second pipe segment, the first pipe segment is provided with a first pipe segment inlet and a first pipe segment outlet, the second pipe segment is provided with a second pipe segment inlet and a second pipe segment outlet, the first pipe segment and the second pipe segment are respectively connected to the base through a fixed pressure plate and a fixed bolt, and the first pipe segment and the second pipe segment are arranged in parallel.

[0010] Furthermore, the base is also provided with a temperature probe hole, in which a temperature probe is provided, and each of the temperature probes extends into the first pipe section and the second pipe section to detect the temperature therein.

[0011] Furthermore, a control board and a control board battery are also provided in the base, and the control board battery is used to supply power to the control board.

[0012] Furthermore, an electronic dial and an electronic dial battery are also provided in the base, and the electronic dial battery is used to supply power to the electronic dial.

[0013] Furthermore, the control board is electrically connected to the operation unit, the NB-IoT unit and the control unit respectively, and the operation unit, the NB-IoT unit and the control unit are all arranged in a support plate on the base.

[0014] Furthermore, the control unit has a built-in timing chip.

[0015] Furthermore, the second pipe section and the first pipe section have exactly the same configuration.

[0016] Second aspect: The present invention provides a working method of a dual-channel water meter, comprising: S1. The water flow velocity in the pipeline is monitored in real time by the speed of ultrasound in water. The time taken by the two transducers to transmit and receive is measured by the built-in timing chip of the control unit. The computing unit determines the water flow velocity according to the time difference. The water flow velocity is corrected by temperature compensation based on the temperature monitored in real time by the temperature probe, thereby obtaining a more accurate water flow velocity and calculating the flow rate through the measured pipe section. S2, the calculation unit determines the water intake flow rate through the flow difference between the first pipe section and the second pipe section, and the NB-IoT unit transmits the water meter flow data to the water supply control center, so that the charging system can calculate the water fee; S3. The water quality indicator total dissolved solids (TDS) is also corrected by the temperature measured by the temperature probe, thereby ensuring the accuracy of the TDS measurement value and obtaining a more accurate water quality evaluation; The temperature compensation correction is performed using a piecewise linear function, and multiple temperature intervals are divided to correspond to different temperature compensation coefficients.

[0017] The beneficial effects brought about by the technical solution provided by the present invention include at least: (1) In the present invention, the dual-channel ultrasonic water meter can monitor the water flow velocity in the branch pipe in real time, and accurately measure the user's water intake by calculating the flow difference between the two pipe sections, effectively solving the problem of water resource waste caused by the need to discharge stale water in the traditional method. At the same time, the built-in temperature probe and compensation correction algorithm can ensure high-precision measurement of the water meter under different temperature conditions, providing reliable support for the energy saving and efficient operation of the piped direct drinking water system.

[0018] (2) In the present invention, by implementing a dual-channel design in the first pipe section and the second pipe section, and combining the method of calculating the flow difference in the operation unit, the present invention avoids the high cost problem of installing two water meters in the traditional technology. The unique dual-channel structure can accurately measure the water intake flow while reducing hardware investment and maintenance costs, providing users with an economical and efficient metering solution, which is particularly suitable for the deployment of large-scale direct drinking water systems.

[0019] (3) In the present invention, ultrasonic technology and piecewise linear temperature compensation algorithm are used to achieve accurate monitoring and correction of water flow velocity and temperature, effectively overcoming the influence of environmental factors such as water flow fluctuations and temperature changes on measurement accuracy. In addition, the equipment is equipped with an NB-IoT unit, which can transmit real-time data to the water supply control center to ensure transparent and reliable system operation. This high-precision and real-time technical design improves the credibility of user water use data and also provides a guarantee for intelligent water supply management. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the structure of a dual-channel ultrasonic water meter provided by an embodiment of the present invention; Figure 2 A cross-sectional schematic diagram of a dual-channel ultrasonic water meter provided by an embodiment of the present invention; Figure 3 A schematic diagram of a control panel of a dual-channel ultrasonic water meter provided by an embodiment of the present invention; Figure 4 A schematic flow chart of a working method of a dual-channel ultrasonic water meter provided in an embodiment of the present invention.

[0022] In the figure: 1. first pipe section; 11. first pipe section inlet; 12. first pipe section outlet; 2. second pipe section; 21. second pipe section inlet; 22. second pipe section outlet; 3. base; 31. fixing bolt; 32. transducer hole; 33. temperature probe hole; 4. fixed pressure plate; 5. first reflecting plate, 51. first reflecting lens, 6. first ultrasonic transducer; 7. second reflecting plate, 71. second reflecting lens, 8. second ultrasonic transducer; 9. temperature probe; 10. control board battery; 41. electronic dial battery; 42. electronic dial; 13. control board; 14. computing unit; 15. NB-IoT unit; 16. control unit; 17. support plate. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described below in conjunction with the accompanying drawings.

[0024] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or it can be either of the two.

[0025] In the embodiments of the present invention, "image" and "picture" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they intend to express are the same. "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be noted that when the difference between them is not emphasized, the meanings they intend to express are the same.

[0026] In the embodiments of the present invention, sometimes the subscripts are as follows It may be mistakenly written as a non-subscript form such as W1. When the difference is not emphasized, the meanings they express are the same.

[0027] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Manual Attached Figure 1-Figure 3 , shows a schematic structural diagram of a dual-channel ultrasonic water meter provided in an embodiment of the present invention.

[0029] An embodiment of the present invention provides a dual-channel ultrasonic water meter, comprising: The first pipe section 1 , the first reflecting plate 5 and the second reflecting plate 7 .

[0030] A first reflecting plate 5 and a second reflecting plate 7 are fixedly provided in the first pipe section 1. The first reflecting plate 5 and the second reflecting plate 7 are symmetrically arranged relative to the cross section of the first pipe section 1. A first reflecting lens 51 and a second reflecting lens 71 are fixedly provided at two ends of the first reflecting plate 5 and the second reflecting plate 7 close to each other. The first reflecting lens 51 and the second reflecting lens 71 respectively form an angle of 45 degrees with the axis of the first pipe section 1 and are perpendicular to each other. A first ultrasonic transducer 6 and a second ultrasonic transducer 8 are fixedly provided on the same side of the first pipe section 1. The signal emitted by the second ultrasonic transducer 8 is reflected by the second reflecting lens 71 to the first reflecting lens 51 and then reflected to the first ultrasonic transducer 6.

[0031] Specifically, the first ultrasonic transducer 6 and the second ultrasonic transducer 8 are fixedly arranged by opening a transducer hole on the first pipe section 1 .

[0032] Furthermore, it also includes a second pipe segment 2, the first pipe segment 1 is provided with a first pipe segment inlet 11 and a first pipe segment outlet 12, the second pipe segment 2 is provided with a second pipe segment inlet 21 and a second pipe segment outlet 22, the first pipe segment 1 and the second pipe segment 2 are respectively connected to the base 3 through a fixed pressure plate 4 and a fixing bolt 31, and the first pipe segment 1 and the second pipe segment 2 are arranged in parallel.

[0033] Specifically, the base 3 is further provided with a temperature probe hole 33 , in which a temperature probe 9 is provided. Each temperature probe 9 extends into the first pipe section 1 and the second pipe section 2 to detect the temperature therein.

[0034] Specifically, a control board 13 and a control board battery 10 are also provided in the base 3 , and the control board battery 10 is used to supply power to the control board 13 .

[0035] Specifically, an electronic dial 42 and an electronic dial battery 41 are further provided in the base 3 , and the electronic dial battery 41 is used to supply power to the electronic dial 42 .

[0036] Specifically, the control board 13 is electrically connected to the operation unit 14 , the NB-IoT unit 15 and the control unit 16 , respectively. The operation unit 14 , the NB-IoT unit 15 and the control unit 16 are all arranged in a support plate 17 on the base 3 .

[0037] Specifically, the control unit 16 has a built-in timing chip.

[0038] The NB-IoT unit 15 transmits the water meter flow signal to the control center.

[0039] Specifically, the second pipe section 2 and the first pipe section 1 have exactly the same configuration.

[0040] Since the power consumption of the control board 13 and the electronic dial 42 are very different, according to the design service life of the water meter of 8 years, two batteries of different sizes are configured to power the control board 13 and the electronic dial 42 respectively, one 26505 battery to power the control board 13, and one 14500 battery to power the electronic dial 42.

[0041] like Figure 4 As shown, the embodiment of the present invention also provides a working method of a dual-channel ultrasonic water meter, and the processing flow may include the following steps: S1. The water flow velocity in the pipeline is monitored in real time by the speed of ultrasound in water. The time taken by the two transducers to transmit and receive is measured by the built-in timing chip of the control unit. The computing unit determines the water flow velocity according to the time difference. The water flow velocity is corrected by temperature compensation based on the temperature monitored in real time by the temperature probe, thereby obtaining a more accurate water flow velocity and calculating the flow rate through the measured pipe section. S2, the calculation unit determines the water intake flow rate through the flow difference between the first pipe section and the second pipe section, and the NB-IoT unit transmits the water meter flow data to the water supply control center, so that the charging system can calculate the water fee; S3. The water quality indicator total dissolved solids (TDS) is also corrected by the temperature measured by the temperature probe, thereby ensuring the accuracy of the TDS measurement value and obtaining a more accurate water quality evaluation; The temperature compensation correction is performed using a piecewise linear function, and multiple temperature intervals are divided to correspond to different temperature compensation coefficients.

[0042] The speed of ultrasound in water increases with the increase of temperature. In order to improve the measurement accuracy of the water meter, a temperature probe is set to measure the temperature of the water in the pipe section to compensate for the water flow in the pipe section, thereby correcting the flow measurement value and improving the flow measurement accuracy of the water meter. The water temperature and TDS measurement value are positively correlated. The water temperature detected by the temperature probe corrects the water quality index TDS to ensure the accuracy of the TDS measurement value, thereby more accurately evaluating the water quality.

[0043] The ultrasonic transducer has both the functions of transmitting and receiving ultrasonic waves. When the second ultrasonic transducer 8 of the pipe section 1 sends a signal, the signal is reflected by the second reflective lens 71 to the first reflective lens 51 and then to the first ultrasonic transducer 6, and the first ultrasonic transducer 6 receives the signal. The timing chip built into the control unit 16 measures the time between the transmission and reception of the two transducers.

[0044] The first ultrasonic transducer 6 sends out a signal, which is reflected by the first reflective lens 51 to the second reflective lens 71 and then to the second ultrasonic transducer 8, and the second ultrasonic transducer 8 receives the signal. The timing chip built into the control unit 16 measures the time between the transmission and reception of the two transducers. The calculation unit 14 determines the speed of the water flow based on the two time differences, thereby calculating the flow rate through pipe section one. Similarly, the flow rate through pipe section two can be obtained. The calculation unit 14 determines the water intake flow rate based on the two flow differences. The NB-IoT unit 15 transmits the water meter flow signal to the water supply control center, which can calculate the water fee through the charging system and realize dual-channel metering of a water meter.

[0045] Conductivity is one of the important indicators for measuring water quality. It reflects the concentration of ions in water, including calcium, magnesium, potassium and other ions. These ions mainly come from dissolved solids (TDS, Total Dissolved Solids) in water. The higher the TDS value, the more dissolved solids in the water, and the higher the conductivity. Therefore, by measuring conductivity, the TDS value in water can be indirectly measured to judge the quality of water. The higher the TDS value, the higher the conductivity of water. When the TDS value is 50-300mg / L, the water quality is very refreshing and meets the standards for healthy drinking water.

[0046] There is a close relationship between the conductivity of water and temperature. An increase in temperature will cause the conductivity of water to increase. This is because an increase in temperature will accelerate the movement of ions in water, thereby increasing conductivity. For every 1°C increase in temperature, the conductivity will increase by about 2-4%. The ionization of water is an endothermic process. An increase in temperature will promote the ionization of water, increase the concentration of ions in water, and thus increase conductivity. In addition, temperature changes will also affect the density and stratification of water, further affecting the measurement of conductivity.

[0047] The temperature measured by the temperature probe is compensated to offset the influence of temperature change on the measurement result. The temperature compensation coefficient is not a constant value. After it is higher than 30°C, the influence on the measured value is small, while the influence on the measured value is large at lower temperatures. When the temperature interval is reasonably divided, the relationship is close to a proportional relationship. The present invention uses a piecewise linear function for temperature compensation correction. Since the influence is greater at low temperatures, the temperature interval is defined narrower. When the temperature is higher than 30 degrees, the influence of temperature is small, so the temperature interval is defined wider.

[0048] The calculation formula of TDS is as follows: ; in, is the TDS value, is the temperature in degrees Celsius, is a constant corresponding to different temperatures, is the temperature difference. TDS (Total Dissolved Solids) is the total dissolved solids, and its unit is milligrams per liter (mg / L): it represents the number of milligrams of dissolved solids contained in each liter of solution. It is the most commonly used unit and can intuitively reflect the mass of dissolved solids in a unit volume of solution. For example, the TDS value of a water sample is 200 mg / L, which means that there are 200 milligrams of dissolved solids per liter of the water sample. According to different application environments, the temperature range is set to 1-40℃. The temperature segmentation range is divided into six sections, 1-5, 5-10, 10-16, 16-23, 23-30, 30-40. Corresponding to k1, k2, k3, k4, k5, k6 respectively. The specific values ​​of k1, k2, k3, k4, k5, k6 are determined by experiments.

[0049] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention include at least: (1) In the present invention, the dual-channel ultrasonic water meter can monitor the water flow velocity in the branch pipe in real time, and accurately measure the user's water intake by calculating the flow difference between the two pipe sections, effectively solving the problem of water resource waste caused by the need to discharge stale water in the traditional method. At the same time, the built-in temperature probe and compensation correction algorithm can ensure high-precision measurement of the water meter under different temperature conditions, providing reliable support for the energy saving and efficient operation of the piped direct drinking water system.

[0050] (2) In the present invention, by implementing a dual-channel design in the first pipe section and the second pipe section, and combining the method of calculating the flow difference in the operation unit, the present invention avoids the high cost problem of installing two water meters in the traditional technology. The unique dual-channel structure can accurately measure the water intake flow while reducing hardware investment and maintenance costs, providing users with an economical and efficient metering solution, which is particularly suitable for the deployment of large-scale direct drinking water systems.

[0051] (3) In the present invention, ultrasonic technology and piecewise linear temperature compensation algorithm are used to achieve accurate monitoring and correction of water flow velocity and temperature, effectively overcoming the influence of environmental factors such as water flow fluctuations and temperature changes on measurement accuracy. In addition, the equipment is equipped with an NB-IoT unit, which can transmit real-time data to the water supply control center to ensure transparent and reliable system operation. This high-precision and real-time technical design improves the credibility of user water use data and also provides a guarantee for intelligent water supply management.

[0052] The above contents are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0053] There are a few points to note: (1) The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0054] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0055] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0056] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A dual-channel ultrasonic water meter, comprising a first pipe section (1), a first reflector (5) and a second reflector (7), characterized in that: The first reflecting plate (5) and the second reflecting plate (7) are fixedly provided in the first pipe section (1); the first reflecting plate (5) and the second reflecting plate (7) are symmetrically arranged relative to the cross section of the first pipe section (1); the first reflecting lens (51) and the second reflecting lens (71) are fixedly provided at two ends of the first reflecting plate (5) and the second reflecting plate (7) close to each other; the first reflecting lens (51) and the second reflecting lens (71) respectively form an angle of 45 degrees with the axis of the first pipe section (1) and are perpendicular to each other; a first ultrasonic transducer (6) and a second ultrasonic transducer (8) are fixedly provided on the same side of the first pipe section (1); a signal emitted by the second ultrasonic transducer (8) is reflected by the second reflecting lens (71) to the first reflecting lens (51) and then reflected to the first ultrasonic transducer (6); It also comprises a second pipe section (2), the first pipe section (1) being provided with a first pipe section inlet (11) and a first pipe section outlet (12), the second pipe section (2) being provided with a second pipe section inlet (21) and a second pipe section outlet (22), the first pipe section (1) and the second pipe section (2) being connected to the base (3) via a fixing plate (4) and fixing bolts (31), respectively, the first pipe section (1) and the second pipe section (2) being arranged in parallel; The base (3) is further provided with a temperature probe hole (33), in which a temperature probe (9) is provided, and each of the temperature probes (9) extends into the first pipe section (1) and the second pipe section (2) for detecting the temperature therein.

2. A dual-channel ultrasonic water meter according to claim 1, characterized in that: include: The first ultrasonic transducer (6) and the second ultrasonic transducer (8) are fixedly arranged by opening transducer holes on the first pipe section (1).

3. A dual-channel ultrasonic water meter according to claim 1, characterized in that: include: A control panel (13) and a control panel battery (10) are also provided in the base (3); the control panel battery (10) is used to supply power to the control panel (13).

4. A dual-channel ultrasonic water meter according to claim 3, characterized in that: include: An electronic dial (42) and an electronic dial battery (41) are also provided in the base (3); the electronic dial battery (41) is used to supply power to the electronic dial (42).

5. A dual-channel ultrasonic water meter according to claim 4, characterized in that: include: The control panel (13) is electrically connected to the operation unit (14), the NB-IoT unit and the control unit (16) respectively; the operation unit (14), the NB-IoT unit (15) and the control unit (16) are all arranged in a support plate (17) on the base (3).

6. A dual-channel ultrasonic water meter according to claim 5, comprising: The control unit (16) has a built-in timing chip.

7. A dual-channel ultrasonic water meter according to claim 6, comprising: The second pipe section (2) and the first pipe section (1) are configured exactly the same.

8. A working method of a dual-channel ultrasonic water meter, characterized in that: include: S1. The water flow velocity in the pipeline is monitored in real time by the speed of ultrasound in water. The time taken by the two transducers to transmit and receive is measured by the built-in timing chip of the control unit. The computing unit determines the water flow velocity according to the time difference. The water flow velocity is corrected by temperature compensation based on the temperature monitored in real time by the temperature probe, thereby obtaining a more accurate water flow velocity and calculating the flow rate through the measured pipe section. S2, the calculation unit determines the water intake flow rate through the flow difference between the first pipe section and the second pipe section, and the NB-IoT unit transmits the water meter flow data to the water supply control center, so that the charging system can calculate the water fee; S3. The water quality indicator total dissolved solids (TDS) is also corrected by the temperature measured by the temperature probe, thereby ensuring the accuracy of the TDS measurement value and obtaining a more accurate water quality evaluation; The temperature compensation correction is performed using a piecewise linear function, and multiple temperature intervals are divided to correspond to different temperature compensation coefficients.

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