Sampling circuit for water treatment equipment

Abstract

The utility model provides a sampling circuit for water treatment equipment, which comprises a follower, the input end of the follower is connected with the output end of a probe, the probe detects water quality data of a water area and generates and outputs a voltage signal in the detection process, and the follower is used for enhancing the driving capability of the voltage signal; the input end of the amplifier is connected with the output end of the follower, and the amplifier is used for increasing the voltage signal to a voltage range in which a master control MCU carries out ADC sampling; the input end of the filter is connected with the output end of the amplifier, and the filter is used for filtering clutter signals in the voltage signals so that a main MCU can further process the voltage signals to obtain final water quality data. According to the utility model, the accuracy of water quality data sampling is improved.

Description

Technical Field

[0001] This utility model relates to the field of water quality control technology, and in particular to a sampling circuit for water treatment equipment. Background Technology

[0002] Traditional water quality control typically involves using water treatment salt machines to electrolyze brine to generate chlorine gas, which then dissolves in water to produce hypochlorous acid for pool water disinfection.

[0003] Existing water treatment salt machines require precise water quality data collection for electronic control. The collected data is then used to control the water treatment salt machine to treat the pool water and maintain it at a suitable level for swimming.

[0004] Currently, water quality data is typically collected using probes, and then adjusted based on this data. However, probes are quite sensitive to environmental conditions, particularly temperature and humidity, which directly affect the measurement results. Furthermore, the probe electrodes are easily affected by contaminants, leading to inaccurate measurements. Summary of the Invention

[0005] This invention provides a sampling circuit for water treatment equipment to solve the problem of inaccurate water quality data collected by probes in the prior art, thereby improving the accuracy of water quality data sampling.

[0006] This utility model provides a sampling circuit for water treatment equipment, including:

[0007] A follower is provided, the input of which is connected to the output of the probe. The probe detects water quality data of the water area and generates and outputs a voltage signal during the detection process. The follower is used to enhance the driving capability of the voltage signal.

[0008] An amplifier, the input of which is connected to the output of the follower, is used to boost the voltage signal to the voltage range for ADC sampling by the main control MCU;

[0009] A filter, the input of which is connected to the output of the amplifier, is used to filter out noise signals in the voltage signal so that the main MCU can further process the voltage signal to obtain the final water quality data.

[0010] According to the present invention, a sampling circuit for a water treatment device is provided, wherein the probe includes a pH probe and an ORP probe, and the water quality data includes pH data and ORP data;

[0011] The pH probe is used to detect the pH data of the water body;

[0012] The ORP probe is used to detect ORP data in the water area.

[0013] According to the sampling circuit for water treatment equipment provided by this utility model, the pH probe integrates a temperature sensor, and the water quality data also includes temperature;

[0014] The temperature sensor is used to detect the temperature of the water body.

[0015] According to the sampling circuit for water treatment equipment provided by this utility model, the main control MCU also uses a PID algorithm to control the working power of the water treatment equipment based on the final water quality data, so as to control the water quality of the water area.

[0016] According to the present invention, a sampling circuit for a water treatment device further includes a first comparator, a second comparator, and a third comparator;

[0017] The first comparator is used to compare the final pH data with the maximum and minimum values ​​of a first preset range, and output a first level value;

[0018] The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of a second preset range, and output a second level value;

[0019] The third comparator is used to compare the final temperature with the maximum and minimum values ​​of a third preset range, and output a third level value;

[0020] The input terminal of the main control MCU is connected to the output terminals of the first comparator, the second comparator, and the third comparator. The main control MCU is used to control the operating frequency of the water treatment equipment according to the first level value, the second level value, and the third level value.

[0021] According to the sampling circuit for water treatment equipment provided by this utility model, the first comparator is used to compare the final pH data with the maximum and minimum values ​​of the first preset range. When the final pH data is not within the first preset range, the first level value is the preset level value.

[0022] The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of the second preset range. If the final ORP data is not within the second preset range, the second level value is the preset level value.

[0023] The third comparator is used to compare the final temperature with the maximum and minimum values ​​of the third preset range. If the final temperature is not within the third preset range, the third level value is the preset level value.

[0024] When the main control MCU is at the first level value, the second level value, or the third level value is the preset level value, it controls the operating frequency of the water treatment equipment to control water quality; otherwise, it shuts down the water treatment equipment.

[0025] According to the present invention, a sampling circuit for a water treatment device is provided, the water treatment device including a water treatment salt machine and an ultraviolet lamp.

[0026] According to the sampling circuit for water treatment equipment provided by this utility model, a turbidity sensor is also included, which is used to collect turbidity information of the water body.

[0027] According to the present invention, a sampling circuit for a water treatment device further includes a fourth comparator, the input terminal of which is connected to the output terminal of the turbidity sensor, and the input terminal of the main control MCU is connected to the output terminal of the fourth comparator.

[0028] The fourth comparator is used to compare the turbidity information with a first preset threshold and a second preset threshold, wherein the first preset threshold is greater than the second preset threshold.

[0029] The main control MCU controls whether the water treatment salt machine and ultraviolet lamp are activated based on the turbidity information.

[0030] According to the sampling circuit for water treatment equipment provided by this utility model, the main control MCU is specifically used for:

[0031] When the turbidity information is greater than the first preset threshold, the ultraviolet lamp is turned off and the water treatment salt machine is turned on.

[0032] When the turbidity information is less than or equal to the first preset threshold and greater than or equal to the second preset threshold, the ultraviolet lamp and the water treatment salt machine are turned on.

[0033] When the turbidity information is less than the second preset threshold, the ultraviolet lamp is turned on and the water treatment salt machine is turned off.

[0034] The sampling circuit for water treatment equipment provided by this utility model strengthens, amplifies and filters the voltage signal generated and output by the front-end probe during the detection process, thereby achieving accurate sampling of water quality data. The processed voltage signal enters the main control MCU of the water treatment equipment for further processing, and finally obtains accurate water quality data, enabling the water treatment equipment to accurately control the water quality cleanliness of the water area. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a sampling circuit for a water treatment device provided by this utility model;

[0037] Figure 2 This is a connection diagram of a sampling circuit for a water treatment device provided by this utility model;

[0038] Figure 3 This is a schematic diagram of the circuit structure of the follower in the sampling circuit of a water treatment equipment provided by this utility model;

[0039] Figure 4 This is a schematic diagram of the amplifier circuit in the sampling circuit of a water treatment equipment provided by this utility model;

[0040] Figure 5 This is a schematic diagram of the circuit structure of the filter in the sampling circuit of a water treatment equipment provided by this utility model;

[0041] Figure 6 This is a schematic diagram of the pH (temperature) acquisition process in the sampling circuit of a water treatment equipment provided by this utility model;

[0042] Figure 7 This is a schematic diagram of the ORP acquisition process in the sampling circuit of a water treatment device provided by this utility model. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0044] The following is combined Figure 1 and Figure 2 This invention describes a sampling circuit for a water treatment device, comprising:

[0045] A follower is provided, the input of which is connected to the output of the probe. The probe detects water quality data of the water area and generates and outputs a voltage signal during the detection process. The follower is used to enhance the driving capability of the voltage signal.

[0046] An amplifier, the input of which is connected to the output of the follower, is used to boost the voltage signal to the voltage range that the main control MCU (Microcontroller Unit) can sample using an ADC (Analog to Digital Converter).

[0047] A filter, the input of which is connected to the output of the amplifier, is used to filter out noise signals in the voltage signal so that the main MCU can further process the voltage signal to obtain the final water quality data.

[0048] The sampling circuit in this embodiment is used in water treatment equipment for water bodies such as swimming pools to sample water quality data and regulate the water quality of the water body.

[0049] The sampling circuit requires a probe to detect water quality in the water area. Changes in water quality will cause the probe to generate a slight voltage output. The voltage signal output by the probe is then processed in the sampling circuit.

[0050] The sampling circuit mainly uses operational amplifiers as the main electronic components to build the circuit, and mainly performs signal processing work such as amplification and filtering of the voltage signal output by the front-end probe.

[0051] The follower can be implemented using the CA3140 component, and the circuit diagram is shown below. Figure 3 As shown, the follower is mainly used to enhance the driving force of the voltage signal before it enters the subsequent sampling circuit. This is because the driving capability of the voltage signal generated by the front-end probe is insufficient to directly drive the subsequent sampling circuit.

[0052] The amplifier can be implemented using OP07 components, and the circuit diagram is as follows: Figure 4 As shown. The amplifier is mainly used to boost the voltage signal to a voltage range that the backend main control MCU can use for ADC sampling, so that the main control MCU can perform ADC sampling normally.

[0053] The filter can be implemented using OP07 components, and the circuit diagram is as follows. Figure 5 As shown, the filter is mainly used to filter out high-frequency noise signals that may exist in the voltage signal, and to output a clean voltage signal to the main control MCU at the back end for sampling.

[0054] After the sampling circuit processes the voltage signal generated by the probe, the processed voltage signal will enter the main control MCU of the water treatment equipment for further processing, such as digital filtering, to ultimately obtain accurate water quality data. The water treatment equipment will then treat the water area accordingly based on the accurate water quality data to keep it clean.

[0055] This embodiment uses a sampling circuit to enhance, amplify, and filter the voltage signal generated and output by the front-end probe during the detection process, thereby achieving accurate sampling of water quality data. The processed voltage signal enters the main control MCU of the water treatment equipment for further processing, ultimately obtaining accurate water quality data, enabling the water treatment equipment to precisely control the cleanliness of the water body.

[0056] Based on the above embodiments, the probe in this embodiment includes a pH probe and an ORP (Oxidation-Reduction Potential) probe, and the water quality data includes pH data and ORP data;

[0057] The pH probe is used to detect the pH data of the water body;

[0058] The ORP probe is used to detect ORP data in the water area.

[0059] ORP data is a parameter that measures the relative strength of oxidants and reductants in water or solution, reflecting the level of electronic activity within the system, i.e., the tendency of reactants to undergo oxidation or reduction reactions. A positive ORP value indicates that the system tends to undergo oxidation reactions; conversely, a negative ORP value means that the environment is more conducive to reduction reactions.

[0060] Based on the above embodiments, the pH probe in this embodiment integrates a temperature sensor, and the water quality data also includes temperature;

[0061] The temperature sensor is used to detect the temperature of the water body.

[0062] The sampling circuit uses a pH probe (integrated with a temperature sensor) and an ORP probe to detect pH, ORP, and temperature changes in the water body. Figure 6 and Figure 7 As shown. Changes in the pH and temperature of the water body will cause the pH probe to generate a slight voltage output, and changes in the ORP data of the water body will also cause the ORP probe to generate a slight voltage output. These voltage outputs will be processed in the sampling circuit.

[0063] Based on the above embodiments, the main control MCU in this embodiment is also used to control the working power of the water treatment equipment using a PID algorithm according to the final water quality data, so as to control the water quality of the water area.

[0064] The main control MCU adjusts the water quality based on the final three types of water quality data.

[0065] Based on the above embodiments, this embodiment also includes a first comparator, a second comparator, and a third comparator;

[0066] The first comparator is used to compare the final pH data with the maximum and minimum values ​​of a first preset range, and output a first level value;

[0067] The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of a second preset range, and output a second level value;

[0068] The third comparator is used to compare the final temperature with the maximum and minimum values ​​of a third preset range, and output a third level value;

[0069] The input terminal of the main control MCU is connected to the output terminals of the first comparator, the second comparator, and the third comparator. The main control MCU controls the operating frequency of the water treatment equipment according to the first level value, the second level value, and the third level value.

[0070] The first, second, and third comparators are used to determine whether the final water quality data falls within a corresponding preset range. If it does, the water quality meets the standard, and the water treatment equipment is shut down. If it does not fall within the preset range, the water quality fails to meet the standard, and the water treatment equipment is controlled to adjust the water quality. They can also compare the deviation of the final water quality data from the corresponding preset range, and control the operating frequency of the water treatment equipment based on the magnitude of the deviation.

[0071] Based on the above embodiments, in this embodiment, the first comparator is used to compare the final pH data with the maximum and minimum values ​​of the first preset range. When the final pH data is not within the first preset range, the first level value is a preset level value.

[0072] The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of the second preset range. If the final ORP data is not within the second preset range, the second level value is the preset level value.

[0073] The third comparator is used to compare the final temperature with the maximum and minimum values ​​of the third preset range. If the final temperature is not within the third preset range, the third level value is the preset level value.

[0074] When the main control MCU is at the first level value, the second level value, or the third level value is the preset level value, it controls the operating frequency of the water treatment equipment to control water quality; otherwise, it shuts down the water treatment equipment.

[0075] The preset level value can be either high level 1 or low level 0; this embodiment does not impose any limitation.

[0076] Based on the above embodiments, the water treatment equipment in this embodiment is a water treatment salt machine and an ultraviolet lamp.

[0077] Water treatment salt spraying equipment primarily controls chlorine production efficiency by regulating its electrolysis power, thereby adjusting water quality. However, chlorine disinfection alters water quality and may produce disinfection byproducts such as trihalomethanes, which could pose potential health risks. Furthermore, chlorine gas itself has an irritating odor, and improper operation could lead to leaks, posing hazards to operators and nearby residents.

[0078] Intelligent water quality regulation can be achieved by adjusting the electrolysis power and UV lamp power of the water treatment salt machine through PID closed-loop control. The water quality data determines the adjustment range or target value.

[0079] By adding ultraviolet disinfection function to the hypochlorous acid disinfection of water treatment salt machine equipment, and through the joint control algorithm of electrolysis power and ultraviolet power, faster disinfection speed, better disinfection effect and more stable water quality control are achieved.

[0080] Based on the above embodiments, this embodiment also includes a turbidity sensor, which is used to collect turbidity information of the water body.

[0081] Based on the above embodiments, this embodiment also includes a fourth comparator, the input of which is connected to the output of the turbidity sensor, and the input of the main control MCU is connected to the output of the fourth comparator;

[0082] The fourth comparator is used to compare the turbidity information with a first preset threshold and a second preset threshold, wherein the first preset threshold is greater than the second preset threshold.

[0083] The main control MCU controls whether the water treatment salt machine and ultraviolet lamp are activated based on the turbidity information.

[0084] Turbidity information can be used to provide feedback on the turbidity level of water bodies, which significantly affects the disinfection effect of ultraviolet (UV) lamps. The clearer the water, the better the UV lamp penetration, and the better the disinfection effect. Therefore, turbidity information collected by a turbidity sensor is needed to control the power of the UV lamps.

[0085] The turbidity information is compared with the first preset threshold and the second preset threshold to determine the range of the turbidity information, thereby controlling whether the water treatment salt machine and ultraviolet lamp are activated.

[0086] Based on the above embodiments, the main control MCU in this embodiment is specifically used for:

[0087] When the turbidity information is greater than the first preset threshold, the ultraviolet lamp is turned off and the water treatment salt machine is turned on.

[0088] When the turbidity information is less than or equal to the first preset threshold and greater than or equal to the second preset threshold, the ultraviolet lamp and the water treatment salt machine are turned on.

[0089] When the turbidity information is less than the second preset threshold, the ultraviolet lamp is turned on and the water treatment salt machine is turned off.

[0090] When the turbidity information is greater than the first preset threshold, it indicates that the water is turbid. The water treatment salt machine is turned on to perform high-power electrolysis, while the ultraviolet lamp is turned off. Different control methods are implemented according to different degrees of turbidity.

[0091] When the turbidity information is less than or equal to the first preset threshold and greater than or equal to the second preset threshold, it indicates that the water is slightly turbid. Electrolysis of the water treatment salt machine is then activated, and the ultraviolet lamp is simultaneously turned on. The PID algorithm is used to jointly control the electrolysis power of the water treatment salt machine and the power of the ultraviolet lamp to achieve joint disinfection and rapidly improve water quality.

[0092] When the turbidity information is less than the second preset threshold, it indicates that the water is clear, and only the ultraviolet lamp is turned on for disinfection to maximize the disinfection effect.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sampling circuit for a water treatment device, characterized in that, include: A follower is provided, the input of which is connected to the output of the probe. The probe detects water quality data of the water area and generates and outputs a voltage signal during the detection process. The follower is used to enhance the driving capability of the voltage signal. An amplifier, the input of which is connected to the output of the follower, is used to boost the voltage signal to the voltage range for ADC sampling by the main control MCU; A filter, the input of which is connected to the output of the amplifier, is used to filter out noise signals in the voltage signal so that the main MCU can further process the voltage signal to obtain the final water quality data.

2. The sampling circuit for water treatment equipment according to claim 1, characterized in that, The probes include a pH probe and an ORP probe, and the water quality data includes pH data and ORP data. The pH probe is used to detect the pH data of the water body; The ORP probe is used to detect ORP data in the water area.

3. The sampling circuit for water treatment equipment according to claim 2, characterized in that, The pH probe integrates a temperature sensor, and the water quality data also includes temperature. The temperature sensor is used to detect the temperature of the water body.

4. The sampling circuit for water treatment equipment according to claim 3, characterized in that, The main control MCU also uses a PID algorithm to control the operating power of the water treatment equipment based on the final water quality data, so as to control the water quality of the water area.

5. The sampling circuit for water treatment equipment according to claim 4, characterized in that, It also includes a first comparator, a second comparator, and a third comparator; The first comparator is used to compare the final pH data with the maximum and minimum values ​​of a first preset range, and output a first level value; The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of a second preset range, and output a second level value; The third comparator is used to compare the final temperature with the maximum and minimum values ​​of a third preset range, and output a third level value; The input terminal of the main control MCU is connected to the output terminals of the first comparator, the second comparator, and the third comparator. The main control MCU is used to control the operating frequency of the water treatment equipment according to the first level value, the second level value, and the third level value.

6. The sampling circuit for water treatment equipment according to claim 5, characterized in that, The first comparator is used to compare the final pH data with the maximum and minimum values ​​of the first preset range. If the final pH data is not within the first preset range, the first level value is the preset level value. The second comparator is used to compare the final ORP data with the maximum and minimum values ​​of the second preset range. If the final ORP data is not within the second preset range, the second level value is the preset level value. The third comparator is used to compare the final temperature with the maximum and minimum values ​​of the third preset range. If the final temperature is not within the third preset range, the third level value is the preset level value. When the main control MCU is at the first level value, the second level value, or the third level value is the preset level value, it controls the operating frequency of the water treatment equipment to control water quality; otherwise, it shuts down the water treatment equipment.

7. The sampling circuit for water treatment equipment according to claim 4, characterized in that, The water treatment equipment includes a water treatment salt machine and an ultraviolet lamp.

8. The sampling circuit for water treatment equipment according to claim 7, characterized in that, It also includes a turbidity sensor, which is used to collect turbidity information of the water body.

9. The sampling circuit for a water treatment device according to claim 8, characterized in that, It also includes a fourth comparator, the input of which is connected to the output of the turbidity sensor, and the input of the main control MCU is connected to the output of the fourth comparator; The fourth comparator is used to compare the turbidity information with a first preset threshold and a second preset threshold, wherein the first preset threshold is greater than the second preset threshold; The main control MCU controls whether the water treatment salt machine and ultraviolet lamp are activated based on the turbidity information.

10. The sampling circuit for a water treatment device according to claim 9, characterized in that, The main control MCU is specifically used for: When the turbidity information is greater than the first preset threshold, the ultraviolet lamp is turned off and the water treatment salt machine is turned on. When the turbidity information is less than or equal to the first preset threshold and greater than or equal to the second preset threshold, the ultraviolet lamp and the water treatment salt machine are turned on. When the turbidity information is less than the second preset threshold, the ultraviolet lamp is turned on and the water treatment salt machine is turned off.

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