A water ion concentration measuring system, a water purifying system and a measuring method

Abstract

This application relates to water quality testing technology, disclosing a system for measuring ion concentration in water, a water purification system, and a measurement method. The system includes: a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit. The polarization circuit polarizes the working electrode. The open-circuit potential measurement circuit measures the corresponding open-circuit potential and transmits the measurement data to the current amplification circuit. The current amplification circuit amplifies and filters the measurement data. The temperature measurement circuit collects temperature data and transmits it to the microcontroller circuit. The microcontroller circuit generates the polarization signal corresponding to the polarization circuit, calculates the ion concentration of the water sample based on the measurement data and temperature data, and calibrates the system using a standard solution of known concentration. The data storage circuit stores the relevant data transmitted by the microcontroller circuit. This application aims to achieve accurate measurement of ion concentration in water.

Description

Technical Field

[0001] This application relates to the field of water quality testing technology, and in particular to a system for measuring ion concentration in water, a water purification system, and a method for measuring ion concentration in water. Background Technology

[0002] The types and concentrations of ions in water are key indicators for assessing water quality, with calcium and magnesium ions having a particularly significant impact. The concentration of these ions directly determines water hardness, thus affecting the taste and safety of drinking water. Real-time monitoring of ion concentrations in drinking water equipment helps improve the automation level of the equipment and ensures the quality of drinking water.

[0003] However, existing ion concentration detection methods mainly rely on laboratory chemical analysis. These methods involve complex equipment, high costs, and long detection times, making it difficult to meet the real-time monitoring needs of practical applications. In other words, achieving high-precision real-time monitoring in complex water quality environments, especially for the accurate detection of trace ions such as calcium and magnesium, remains a significant technical challenge.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide a system for measuring the concentration of ions in water, a water purification system, and a method for measuring the concentration of ions in water, with the aim of achieving accurate measurement of the concentration of ions in water.

[0006] To achieve the above objectives, this application provides a system for measuring ion concentration in water, comprising: a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit;

[0007] The polarization circuit is electrically connected to the working electrode in the open-circuit potential measurement circuit and polarizes the working electrode.

[0008] The open circuit potential measurement circuit is electrically connected to the microcontroller circuit via the current amplification circuit; the reference electrode and working electrode of the open circuit potential measurement circuit are placed in the water sample of the water purification equipment to measure the corresponding open circuit potential and transmit the measurement data to the current amplification circuit.

[0009] The current amplifier circuit is used to amplify and filter the measurement data and transmit it to the microcontroller circuit.

[0010] The temperature measurement circuit is electrically connected to the microcontroller circuit to collect the temperature data of the water sample and transmit it to the microcontroller circuit.

[0011] The microcontroller circuit is used to generate the polarization signal corresponding to the polarization circuit, calculate the ion concentration of the water sample based on the measurement data and temperature data, and calibrate the system based on the standard solution of known concentration.

[0012] The data storage circuit is electrically connected to the microcontroller circuit and is used to store relevant data transmitted by the microcontroller circuit.

[0013] To achieve the above objectives, this application also provides a water purification system, which includes a water purification device and a water ion concentration measurement system as described above.

[0014] To achieve the above objectives, this application also provides a method for measuring the concentration of ions in water, wherein the method is applied to the water ion concentration measurement system described above; the method for measuring the concentration of ions in water includes:

[0015] The microcontroller circuit controls the polarization circuit to generate a corresponding square wave signal according to the set frequency and amplitude, so as to polarize the working electrode in the open circuit potential measurement circuit.

[0016] The water sample from the water purification equipment is measured using an open-circuit potential measurement circuit, and the measurement data is amplified and filtered using a current amplification circuit.

[0017] The measurement data after current amplification and filtering are converted from analog to digital to generate sampled data.

[0018] Based on the pre-stored correspondence between sampling data and ion concentration, the ion concentration is initially calculated using the sampling data;

[0019] Based on the temperature data of the water sample collected by the temperature measurement circuit, the initially calculated ion concentration is calibrated to obtain the ion concentration of the water sample.

[0020] The water ion concentration measurement system, water purification system, and water ion concentration measurement method provided in this application integrate a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit. Through the coordinated operation of these components, accurate measurement of water ion concentration can be achieved. The system can realize real-time monitoring of water ion concentration, that is, through electrochemical technology and precision circuit design, it ensures real-time, high-precision measurement of water ion concentration (especially calcium and magnesium ions), meeting the needs of practical application scenarios. Furthermore, the system supports automatic calibration and data management, ensuring long-term stable operation and facilitating long-term water quality analysis and system optimization. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the water ion concentration measurement system architecture in one embodiment of this application;

[0022] Figure 2 This is a circuit diagram of the polarization circuit in one embodiment of this application;

[0023] Figure 3 This is a circuit diagram of a microcontroller and temperature measurement in one embodiment of this application;

[0024] Figure 4 This is a circuit diagram of open-circuit potential measurement and current amplification in one embodiment of this application;

[0025] Figure 5 This is a circuit diagram of a data storage circuit in one embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the water ion concentration measurement system architecture in another embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the steps for measuring the concentration of ions in water in one embodiment of this application.

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] Furthermore, descriptions using terms such as "first" and "second" in this application are for descriptive purposes only (e.g., to distinguish identical or similar features) and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, technical solutions from different embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed in this application.

[0031] In one embodiment, a system for measuring ion concentration in water is proposed, referring to... Figure 1The water ion concentration measurement system includes: a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit.

[0032] The polarization circuit is electrically connected to the working electrode in the open-circuit potential measurement circuit and polarizes the working electrode.

[0033] The open circuit potential measurement circuit is electrically connected to the microcontroller circuit via the current amplification circuit; the reference electrode and working electrode of the open circuit potential measurement circuit are placed in the water sample of the water purification equipment to measure the corresponding open circuit potential and transmit the measurement data to the current amplification circuit.

[0034] The current amplifier circuit is used to amplify and filter the measurement data and transmit it to the microcontroller circuit.

[0035] The temperature measurement circuit is electrically connected to the microcontroller circuit to collect the temperature data of the water sample and transmit it to the microcontroller circuit.

[0036] The microcontroller circuit is used to generate the polarization signal corresponding to the polarization circuit, calculate the ion concentration of the water sample based on the measurement data and temperature data, and calibrate the system based on the standard solution of known concentration.

[0037] The data storage circuit is electrically connected to the microcontroller circuit and is used to store relevant data transmitted by the microcontroller circuit.

[0038] In this embodiment, the open circuit potential measurement circuit is equipped with a reference electrode and a working electrode. When the system is in use, the reference electrode and the working electrode are placed in the water sample of the water purification equipment to measure the open circuit potential in the water sample. This potential is correlated with the concentration of ions in the water.

[0039] The microcontroller circuit is electrically connected to the polarization circuit and outputs a polarization signal to the polarization circuit, causing the polarization circuit to generate a corresponding square wave signal to polarize the working electrode. The frequency and amplitude of the square wave signal are adjustable to adapt to different water quality conditions. The potential change after polarization can enhance the ion response on the electrode surface, thereby improving the detection sensitivity.

[0040] The reference electrode and working electrode of the open-circuit potential measurement circuit are placed in the water sample to measure the potential difference between the two electrodes and transmit the measurement data to the current amplification circuit.

[0041] The current amplification circuit includes a current amplifier and a low-pass filter. During polarization, a tiny current is generated between the electrodes. This current is amplified by the current amplifier and then filtered to remove noise before being input to the ADC module of the microcontroller circuit for sampling. Since the current change is closely related to the ion concentration, the microcontroller circuit can calculate the ion concentration of the water sample by collecting this data.

[0042] The microcontroller circuit is responsible for controlling the entire system, including generating polarization signals, data acquisition, storage, and ion concentration calculation. It also manages the system's calibration process, using standard solutions of known concentrations to calibrate the system and ensure measurement accuracy after long-term operation.

[0043] Among these methods, the microcontroller circuit can be calibrated and standardized by measuring the potential value of a standard solution of known concentration, thereby ensuring measurement accuracy.

[0044] The microcontroller circuit performs analog-to-digital conversion on the measurement data after current amplification and filtering. After generating sampling data, it can preliminarily calculate the ion concentration of the water sample based on the measurement data corresponding to the sampled water sample and the pre-stored correspondence between the water sample potential and the water sample ion concentration (i.e., the correspondence between the sampling data and the ion concentration).

[0045] Simultaneously, the temperature measurement circuit also collects the current temperature data of the water sample (the sampling end of the temperature measurement circuit can be placed in the water sample or attached to the container storing the water sample), and feeds the temperature data back to the microcontroller circuit in real time. This allows the microcontroller circuit to perform temperature compensation on the initially calculated ion concentration based on the current temperature data of the water sample, correcting the ion concentration value and ultimately obtaining the current ion concentration of the water sample. Furthermore, the microcontroller circuit can dynamically adjust the ion concentration measurement results based on the known correlation between temperature and water sample potential, reducing the influence of temperature on electrochemical measurements.

[0046] In addition, the microcontroller circuit also saves the potential and current data of each measurement through the data storage circuit, and records the data during polarization and calibration. In this way, the system can store the measurement history for a long time, support data backtracking and comparative analysis, and facilitate the monitoring of water quality trends.

[0047] In one embodiment, a system for measuring ion concentration in water is proposed, integrating a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit. Through the coordinated operation of these components, accurate measurement of ion concentration in water can be achieved. The system enables real-time monitoring of ion concentration in water; that is, through electrochemical technology and precise circuit design, it ensures real-time, high-precision measurement of ion concentration (especially calcium and magnesium ions) in water, meeting the needs of practical application scenarios. Furthermore, the system supports automatic calibration and data management, ensuring long-term stable operation and facilitating long-term water quality analysis and system optimization.

[0048] This electrochemical-based water ion concentration measurement system enables real-time, high-precision measurement of ion concentrations (especially calcium and magnesium ions) in water, particularly in water purifiers and other devices. The circuit integrates open-circuit potential detection, polarization circuitry, data acquisition, and storage modules, achieving an automated, low-cost, and easily integrated water ion concentration monitoring solution. It addresses the problems of existing ion concentration detection equipment, such as complexity, low efficiency, and inability to perform online monitoring, thereby improving the intelligence and automation of water quality management. Furthermore, it can be applied to handheld portable devices.

[0049] In one embodiment, based on the above embodiments, the polarization circuit generates a square wave signal based on a digital-to-analog converter and applies a periodically changing potential to the working electrode.

[0050] In this embodiment, a square wave signal is generated by a digital-to-analog converter, and a periodically changing potential is applied to the working electrode to enhance the ion response on its surface. This polarization process can effectively promote the electrochemical reaction between calcium and magnesium ions and the working electrode, thereby improving the sensitivity of ion detection.

[0051] Optional, refer to Figure 2 and Figure 3 The polarization circuit uses a DAC (digital-to-analog converter) chip U1 to generate a square wave signal. This signal is used to apply an alternating voltage to the working electrode for electrode polarization. The microcontroller U4 in the microcontroller circuit controls U1 via its IIC, setting the frequency and amplitude to generate the square wave. The output of U1 passes through a voltage follower U2 to ensure the square wave signal has sufficient load capacity and is not distorted. The output of the voltage follower is connected to the working electrode through a first resistor R6 and a second resistor R31 to apply the square wave voltage signal and polarize the electrode.

[0052] The frequency and amplitude of the polarization signal can be flexibly controlled by the U4 microcontroller to adapt to different water quality environments. This automated control simplifies user operation and enables the system to maintain high measurement accuracy under various water quality conditions.

[0053] In this way, by using a square wave signal generated by a digital-to-analog converter to automatically polarize the electrodes and enhance the ion response, the detection sensitivity of the water ion concentration measurement system can be significantly improved. The system not only measures water ion concentration in real time with high precision, but also has automatic calibration and data management functions, making it suitable for various water quality monitoring scenarios.

[0054] In one embodiment, based on the above embodiments, the microcontroller circuit includes a microcontroller with a built-in 24-bit Δ-Σ ADC;

[0055] The reference electrode is connected to a high-impedance voltage follower via a resistor, and the output of the high-impedance voltage follower is connected to the differential positive input of the 24-bit Δ-Σ ADC inside the microcontroller via a first low-pass filter.

[0056] The working electrode is connected to another high-impedance voltage follower via another resistor. The output of the other high-impedance voltage follower is connected to a current amplifier via a second low-pass filter. The output of the current amplifier is connected to the differential negative input of the 24-bit Δ-Σ ADC inside the microcontroller via a third low-pass filter.

[0057] In this embodiment, refer to Figure 3 The microcontroller circuit includes a microcontroller U4, which has a built-in 24-bit Δ-Σ ADC as the ADC module of the microcontroller circuit.

[0058] Optional, refer to Figure 4 The open-circuit potential measurement circuit and the current amplification circuit can be integrated into a single circuit module. The reference electrode of the open-circuit potential measurement circuit is connected to the first high-impedance voltage follower U7 via the third resistor R22. The output of the first high-impedance voltage follower U7 is connected to the positive differential input of the 24-bit Δ-Σ ADC inside the microcontroller U4 after passing through the first low-pass filter. The first low-pass filter consists of the fourth resistor R25 and the first capacitor C30.

[0059] The working electrode of the open-circuit potential measurement circuit is connected to the second high-impedance voltage follower U8 through the fifth resistor R28. The output of the second high-impedance voltage follower U8 is connected to the current amplifier U10 in the current amplifier circuit after passing through the second low-pass filter. The second low-pass filter consists of the sixth resistor R29 and the second capacitor C31. The amplification factor of the current amplifier is A = R26 / R29, where the seventh resistor R26 and the third capacitor C27 are connected in parallel between the output terminal and the negative input terminal of the current amplifier U10.

[0060] The output of current amplifier U10, after passing through a third low-pass filter, is connected to the differential negative input of the 24-bit Δ-ΣADC inside microcontroller U4. The third low-pass filter consists of an eighth resistor R30 and a fourth capacitor C34.

[0061] Meanwhile, the square wave signal generated by the polarization circuit is connected to the working electrode through the ninth resistor R31.

[0062] Thus, by employing a 24-bit Δ-Σ ADC and a high-impedance operational amplifier, the accuracy and stability of the measurement signal can be ensured, enabling accurate detection of changes in the concentration of trace ions in water. Specifically, the system uses an MCU with an internal 24-bit Δ-Σ ADC for signal acquisition, coupled with a high-impedance operational amplifier, to ensure precise measurement of open-circuit potential and current, thereby achieving accurate detection of trace ion concentration changes in water, especially suitable for measuring low concentrations of calcium and magnesium ions.

[0063] In one embodiment, based on the above embodiments, referring to Figure 3 The microcontroller circuit and the temperature measurement circuit can be integrated into a single circuit module. One end of the thermistor RT1 in the temperature measurement circuit is connected to the power supply pin of the microcontroller U4, and the other end is connected to one end of the tenth resistor R16. The other end of the tenth resistor R16 is connected to ground, and the connection point of RT1 and R16 is connected to the ADC pin of the microcontroller U4.

[0064] Reference Figure 5 In the data storage circuit, the data storage chip U3 and the microcontroller U4 read and write through the IIC communication port to save the potential and current data of each measurement, and record the data during the polarization and calibration process.

[0065] In one embodiment, based on the above embodiments, referring to Figure 6 The water ion concentration measurement system also includes a power input circuit, which is electrically connected to the power supply terminal of the microcontroller circuit to supply power to the water ion concentration measurement system.

[0066] Optionally, the water ion concentration measurement system further includes a display module electrically connected to the microcontroller circuit for displaying the measured ion concentration. The display module is responsible for presenting the measured ion concentration to the user in an intuitive and easy-to-understand manner. In addition to displaying measurement data in real time, the display module can also provide other relevant system information, such as operating status and error messages.

[0067] Optionally, the water ion concentration measurement system also includes an alarm module, which is electrically connected to the microcontroller circuit and is used to issue an alarm when the ion concentration exceeds a threshold. The main function of the alarm module is to promptly issue an alarm signal when the measured ion concentration exceeds a preset threshold, reminding the user or operator to take appropriate measures. By introducing the alarm module, the water ion concentration measurement system can monitor changes in ion concentration in real time and issue an alarm signal promptly when it exceeds a safe range, thus improving the system's safety performance.

[0068] Optional, refer to Figure 3 The alarm module can be integrated into the microcontroller circuit and the LS1 speaker is used for alarm prompts.

[0069] Furthermore, this application proposes a water purification system, which includes a water purification device and a water ion concentration measurement system. The specific structure of the water ion concentration measurement system is as described in the above embodiments. Since this water purification system adopts all the technical solutions of all the above embodiments, it has at least all the technical effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0070] In one embodiment, based on the above embodiments, this application further proposes a method for measuring the concentration of ions in water, applied to the water ion concentration measurement system described in the above embodiments; refer to Figure 7 The method for measuring the ion concentration in water includes:

[0071] Step S10: The microcontroller circuit controls the polarization circuit to generate a corresponding square wave signal according to the set frequency and amplitude, so as to polarize the working electrode in the open circuit potential measurement circuit.

[0072] Step S20: Measure the water sample from the water purification equipment based on the open circuit potential measurement circuit, and use the current amplification circuit to amplify and filter the measurement data.

[0073] Step S30: Perform analog-to-digital conversion on the measurement data after current amplification and filtering to generate sampling data;

[0074] Step S40: Based on the pre-stored correspondence between sampling data and ion concentration, the ion concentration is initially calculated using the sampling data;

[0075] Step S50: Based on the temperature data of the water sample collected by the temperature measurement circuit, the initially calculated ion concentration is calibrated to obtain the ion concentration of the water sample.

[0076] In this embodiment, the execution terminal is a microcontroller circuit.

[0077] The microcontroller circuit controls the polarization circuit to generate a corresponding square wave signal according to a preset frequency and amplitude. The square wave signal is output to the working electrode of the open-circuit potential measurement circuit to polarize the working electrode, enhance the ion response, and improve detection sensitivity.

[0078] The frequency and amplitude of the square wave signal can be adjusted according to water quality conditions to ensure effective polarization under different water quality conditions.

[0079] The open-circuit potential measurement circuit measures the potential difference between the working electrode and the reference electrode in the water sample and transmits the data to the current amplification circuit for processing. After the measurement data is transmitted to the current amplification circuit, the current amplification circuit amplifies and filters the measurement data to eliminate noise and ensure data quality.

[0080] The microcontroller circuit performs analog-to-digital conversion on the amplified and filtered measurement data to generate sampled data. This conversion of analog signals into digital signals facilitates data processing by the microcontroller circuit.

[0081] Furthermore, the microcontroller circuit uses the pre-stored correspondence between sampling data and ion concentration to preliminarily calculate the ion concentration. That is, based on the collected potential data and the pre-stored correspondence between potential and ion concentration, the ion concentration in the water sample is preliminarily estimated.

[0082] Then, based on the temperature data of the water sample collected by the temperature measurement circuit, the initially calculated ion concentration is calibrated to obtain the final ion concentration of the water sample. That is, the ion concentration value is corrected through temperature compensation, reducing the influence of temperature on electrochemical measurements and improving measurement accuracy.

[0083] The temperature measurement circuit acquires water sample temperature data in real time and feeds it back to the microcontroller circuit. Based on the known temperature-potential relationship, the microcontroller circuit dynamically adjusts the ion concentration measurement results to obtain the final ion concentration value.

[0084] This ensures that the system can accurately and efficiently measure ion concentration in water. This method combines electrochemical technology, precision circuit design, data processing, and temperature compensation to achieve real-time, high-precision measurement of ion concentration in water. It is applicable to various water quality monitoring scenarios and enhances the intelligence and automation level of water quality management.

[0085] In one embodiment, based on the above embodiment, after the step of calibrating the preliminarily calculated ion concentration based on the temperature data of the water sample collected by the temperature measurement circuit to obtain the ion concentration of the water sample, the method further includes:

[0086] Based on the ion concentration of the water sample, adjust the water purification parameters of the water purification equipment.

[0087] In this embodiment, the microcontroller circuit acquires the temperature-calibrated ion concentration data and compares it with preset ion concentration standards (such as drinking water standards, industrial water standards, etc.) to determine whether it meets the preset standards.

[0088] Optionally, the microcontroller circuit compares the measured ion concentration with a preset threshold. If the ion concentration is higher than the preset upper limit, the water quality is considered substandard; if the ion concentration is lower than the preset lower limit, the water quality is considered too pure, which may affect the taste or other properties of the water. Based on the comparison result, the microcontroller circuit identifies the water quality status (e.g., "qualified," "requires adjustment," "filter needs replacement," etc.).

[0089] Optionally, the microcontroller circuit determines the water purification parameters that need to be adjusted based on the water quality status. These parameters may include:

[0090] Filtration speed: Adjusting the filtration speed affects the rate at which water passes through the filter element;

[0091] Reverse osmosis pressure: Adjusting the reverse osmosis pressure affects the filtration efficiency of the reverse osmosis membrane;

[0092] Dosage: Adjusting the dosage affects the amount of water purifier that can be added;

[0093] Flushing cycle: Adjusting the flushing cycle affects the cleaning frequency of the filter element.

[0094] Optionally, the microcontroller circuit generates a specific adjustment strategy based on a preset adjustment algorithm. For example, if the ion concentration is too high, the filtration speed is reduced or the dosage is increased; if the ion concentration is too low, the filtration speed is increased or the dosage is decreased.

[0095] Optionally, based on a determined adjustment strategy, the water purification equipment can be controlled to adjust its parameters by driving the corresponding actuators, thereby achieving automatic adjustment of the water purification parameters.

[0096] Optionally, the microcontroller circuit can drive the actuators (such as motors, solenoid valves, dosing pumps, etc.) in the water purification equipment to adjust parameters by outputting control signals; adjust the filtration speed of the filter element by controlling the motor speed; adjust the inlet water pressure of the reverse osmosis membrane by controlling the power of the booster pump; adjust the amount of water purification agent added by controlling the output of the dosing pump; and adjust the flushing frequency of the filter element by controlling the opening and closing time of the solenoid valve and the flushing valve.

[0097] Optionally, the adjusted water purification parameters can be recorded and the adjustment results can be fed back. Recording the parameter values ​​for each adjustment facilitates subsequent analysis and optimization; simultaneously, the adjustment results are fed back to ensure the water purification equipment achieves the expected results. The adjusted water purification parameters are recorded in memory to form an operation log for subsequent analysis and optimization.

[0098] Optionally, the adjustment results can be fed back to the user or control system, for example, by displaying the current water purification parameters and water quality status on a screen, or by uploading data to the cloud via a communication interface.

[0099] After parameter adjustments, the water purification equipment continues to monitor water quality and operational status. This ensures the water quality consistently meets standards and allows for further optimization when necessary. Specifically, after parameter adjustments, the equipment continues to monitor water quality via open-circuit potential and temperature measurement circuits. Based on the continuous monitoring results, the microcontroller circuit dynamically adjusts the purification parameters to ensure the water quality remains at its optimal level.

[0100] In one embodiment, the system automatically adjusts the parameters of the water purification equipment based on the measured ion concentration of the water sample. This ensures that the equipment can automatically optimize its operating parameters based on real-time water quality data, guaranteeing that the effluent water quality meets preset standards. This process not only improves the intelligence and automation level of the water purification equipment but also ensures the real-time nature and efficiency of water quality management, making it suitable for various water quality monitoring and purification scenarios.

[0101] In one embodiment, based on the above embodiments, the method for measuring the ion concentration in water includes:

[0102] A system for measuring ion concentration in water is used to measure the ion concentration of a standard solution with a known concentration.

[0103] The measurement system for ion concentration in water is calibrated based on the comparison between the measured ion concentration and the known concentration.

[0104] In this embodiment, a standard solution of known concentration is selected to verify the accuracy of the measurement system.

[0105] Optionally, by performing steps S10 to S50, the open-circuit potential measurement circuit of the measurement system is used to measure the ion concentration of a standard solution of known concentration. The actual measurement data of the standard solution is obtained for subsequent comparison and calibration.

[0106] This includes preliminary processing of the collected data, such as removing outliers and calculating averages, to ensure data reliability.

[0107] The measured ion concentrations of the standard solution are compared with known concentrations. The error value of the measurement system is calculated to provide a basis for calibration. The distribution of the error value is analyzed to determine the accuracy and stability of the measurement system. Based on the error value, calibration coefficients are calculated, and the output data of the measurement system is corrected using these coefficients to improve its accuracy.

[0108] Optionally, calibration methods may include linear regression, polynomial fitting, etc. Linear regression involves fitting the measured value linearly to a known concentration to obtain a calibration line and calculating the calibration coefficients. Polynomial fitting, on the other hand, uses a polynomial fitting method to obtain a more accurate calibration curve under nonlinear error conditions. The calibration coefficients are calculated using the slope and intercept of the fitted calibration line or curve and are used to correct subsequent measurement data.

[0109] The calibration coefficients are stored in the microcontroller circuit to update the database and algorithm of the measurement system, ensuring the accuracy and reliability of subsequent measurement results.

[0110] Optionally, the calculated calibration coefficients are stored in a data storage circuit to form a calibration table or calibration formula. Based on the calibration coefficients, the data processing algorithm of the measurement system is updated to ensure the accuracy of the measurement results.

[0111] In practical applications, the system's calibration coefficients can be dynamically updated according to actual needs to cope with the impact of water quality changes or other environmental factors.

[0112] In this way, the water ion concentration measurement system achieves high-precision calibration, ensuring the accuracy and reliability of the measurement results. This process not only improves the intelligence and automation level of water quality monitoring but also provides reliable data support for water quality management, applicable to various water quality monitoring and purification scenarios.

[0113] In summary, the water ion concentration measurement system, water purification system, and water ion concentration measurement method provided in this application embodiment integrate a polarization circuit, an open-circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit, and a data storage circuit. Through the coordinated operation of these components, accurate measurement of water ion concentration can be achieved. The system can realize real-time monitoring of water ion concentration, that is, through electrochemical technology and precision circuit design, it ensures real-time, high-precision measurement of water ion concentration (especially calcium and magnesium ions), meeting the needs of practical application scenarios. Furthermore, the system supports automatic calibration and data management, ensuring long-term stable operation and facilitating long-term water quality analysis and system optimization.

[0114] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. Any references to memory, storage, databases, or other media provided in this application and in the embodiments may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual-speed SDRAM (SSRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0115] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, apparatus, article, or method. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or method that includes that element.

[0116] The above description is only a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A system for measuring ion concentration in water, characterized by, The system comprises: a polarization circuit, an open circuit potential measurement circuit, a current amplification circuit, a microcontroller circuit, a temperature measurement circuit and a data storage circuit; the polarization circuit is electrically connected to the working electrode in the open circuit potential measurement circuit and polarizes the working electrode; the open circuit potential measurement circuit is electrically connected to the microcontroller circuit through the current amplification circuit; the reference electrode and the working electrode of the open circuit potential measurement circuit are placed in the water sample of the water purification equipment, the corresponding open circuit potential is measured, and the measurement data is transmitted to the current amplification circuit; the current amplification circuit is used for current amplification and filtering of the measurement data and transmission to the microcontroller circuit; the temperature measurement circuit is electrically connected to the microcontroller circuit and is used for collecting temperature data of the water sample and transmitting to the microcontroller circuit; the microcontroller circuit is used for generating a polarization signal corresponding to the polarization circuit, calculating the ion concentration of the water sample according to the measurement data and the temperature data, and calibrating the system according to a standard solution with a known concentration; the data storage circuit is electrically connected to the microcontroller circuit and is used for storing the relevant data transmitted by the microcontroller circuit.

2. The system for measuring ion concentration in water of claim 1, wherein, The polarization circuit generates a square wave signal based on a digital-to-analog converter to apply a periodically changing potential to the working electrode.

3. The system for measuring ion concentration in water according to claim 1 or 2, wherein The microcontroller circuit comprises a microcontroller with a built-in 24-bit delta-sigma ADC; The reference electrode is connected to a high-impedance voltage follower through a resistor, and the output end of the high-impedance voltage follower is connected to the differential positive input end of the 24-bit delta-sigma ADC inside the microcontroller through a first low-pass filter; The working electrode is connected to another high-impedance voltage follower through another resistor, and the output end of the other high-impedance voltage follower is connected to the current amplifier through a second low-pass filter, and the output end of the current amplifier is connected to the differential negative input end of the 24-bit delta-sigma ADC inside the microcontroller through a third low-pass filter.

4. The system for measuring ion concentration in water of claim 1, wherein, The water ion concentration measurement system further comprises a power input circuit electrically connected to the power supply end of the microcontroller circuit for supplying power to the water ion concentration measurement system.

5. The system for measuring ion concentration in water of claim 1, wherein, The water ion concentration measurement system further comprises a display module electrically connected to the microcontroller circuit for displaying the measured ion concentration.

6. The system for measuring ion concentration in water of claim 1, wherein, The water ion concentration measurement system further comprises an alarm module electrically connected to the microcontroller circuit for alarming when the ion concentration exceeds the threshold value.

7. A water purification system characterized by, The water purification equipment comprises the water ion concentration measurement system according to any one of claims 1-6.

8. A method of measuring ion concentration in water, characterized by, The water ion concentration measurement method is applied to the water ion concentration measurement system according to any one of claims 1-6; the water ion concentration measurement method comprises: The microcontroller circuit controls the polarization circuit to generate a corresponding square wave signal according to the set frequency and amplitude to polarize the working electrode in the open circuit potential measurement circuit; The open circuit potential measurement circuit measures the water sample of the water purification equipment, and the current amplification circuit amplifies and filters the measurement data; The measurement data after current amplification and filtering is converted into analog-to-digital to generate sampling data; The sampling data is used to preliminarily calculate the ion concentration based on the pre-stored corresponding relationship between the sampling data and the ion concentration; The sampling data is used to preliminarily calculate the ion concentration based on the pre-stored corresponding relationship between the sampling data and the ion concentration; The ion concentration of the water sample is calibrated based on the temperature data of the water sample collected by the temperature measuring circuit.

9. The method of measuring ion concentration in water according to claim 8, wherein, The step of calibrating the ion concentration of the water sample based on the temperature data of the water sample collected by the temperature measuring circuit includes: Adjusting the water purification parameters of the water purification device based on the ion concentration of the water sample.

10. The method of measuring ion concentration in water according to claim 8 or 9, wherein The method for measuring the ion concentration in water includes: A measuring system for the ion concentration in water measures the ion concentration of a standard solution with a known concentration; The measuring system for the ion concentration in water is calibrated based on the comparison between the measured ion concentration and the known concentration.

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