Multi-channel conductivity measuring device and water treatment equipment

Abstract

The application discloses a multi-path conductivity measuring device and a water treatment equipment, wherein the multi-path conductivity measuring device comprises an electric control board, multi-path TDS detection probes and a main control circuit. The main control circuit is arranged on the electric control board, and the main control circuit is connected with the multi-path TDS detection probes. The application is characterized in that each TDS detection probe is arranged in the corresponding water solution to be measured to collect the conductivity of the water solution to be measured and output a TDS detection signal, and then the main control circuit is used to determine the water quality layer of the water solution, so that the application is rapidly applied to a multi-stage water treatment equipment, the cost is reduced, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment automation control, and particularly relates to a multi-path conductivity measuring device and a water treatment equipment. BACKGROUND

[0002] The conductivity of water is an important index for measuring the water quality of a water body, which can reflect the electrolyte concentration in the water body. The existing conductivity testing equipment is mainly used for detecting the conductivity of water in the natural water body in the environmental protection field or in the water treatment process, and is expensive.

[0003] With the development of aquaculture automation technology, the water quality in the aquaculture process needs to be automatically monitored. At present, after the conductivity testing module is connected to the aquaculture automation control system, it cannot be applied to other water treatment equipment, that is, the existing conductivity testing module cannot be quickly applied to multi-stage water treatment equipment, thereby affecting the popularization and application of the conductivity testing equipment in the field of water treatment. SUMMARY

[0004] The main purpose of the present application is to provide a multi-path conductivity measuring device, which aims to solve the problem that the existing conductivity testing equipment cannot be applied to various water treatment environments.

[0005] To achieve the above purpose, the present application provides a multi-path conductivity measuring device, which comprises:

[0006] an electric control board;

[0007] a plurality of TDS detection probes, each TDS detection probe being arranged in a corresponding water solution to be measured to collect the conductivity of the water solution to be measured and output a TDS detection signal;

[0008] a main control circuit arranged on the electric control board, the main control circuit being connected with the plurality of TDS detection probes, and the main control circuit being used for receiving the TDS detection signal and determining the water quality layer of the water solution by table lookup method.

[0009] In an embodiment, the multi-path conductivity measuring device comprises:

[0010] a temperature compensation circuit connected with the main control circuit, the temperature compensation circuit being used for heating / cooling the water solution;

[0011] a temperature detection circuit connected with the main control circuit, the temperature detection circuit being used for detecting the temperature value of the water solution to be measured and outputting a corresponding temperature detection signal;

[0012] The main control circuit is used for comparing the temperature value corresponding to the temperature detection signal with a set temperature value, and controlling the temperature compensation circuit to work to adjust the temperature of the aqueous solution to the set temperature value according to the comparison result.

[0013] In an embodiment, the temperature detection circuit comprises:

[0014] At least one temperature sensor, a detection end of each of the temperature sensors is used to be placed in the aqueous solution to be measured to collect the temperature of the aqueous solution to be measured.

[0015] In an embodiment, the temperature sensor is a thermistor.

[0016] In an embodiment, the multi-channel conductivity measuring device further comprises:

[0017] A power module, the power module is used for supplying power to each circuit to work.

[0018] In an embodiment, the multi-channel conductivity measuring device further comprises:

[0019] A communication module arranged on the electric control board, the communication module is connected with the main control circuit and the upper computer respectively, and the communication module is used for establishing a communication connection with the upper computer.

[0020] The main control circuit is also used for packaging and uploading the TDS detection signal to the upper computer.

[0021] In an embodiment, the communication module comprises a differential amplifier, the differential amplifier is connected with the main control circuit, and the differential amplifier is used for differentially amplifying and outputting the TDS detection signal.

[0022] In an embodiment, the communication module further comprises a repeater, the repeater is connected with the differential amplifier, and the repeater is used for forwarding the TDS detection signal to the upper computer.

[0023] In an embodiment, the multi-channel conductivity measuring device comprises:

[0024] A display module arranged on the electric control board, the display module is connected with the main control circuit, and the display module is used for displaying the temperature value and the set temperature value.

[0025] The application further provides a water treatment equipment, which comprises an upper computer and the multi-channel conductivity measuring device.

[0026] The application technical scheme realizes the rapid detection of water quality of water solution in different environments by the multi-path TDS detection probe collecting the conductivity of the water solution to be detected, and realizing the water quality layer of the water solution in different environments. Specifically, the application places each TDS detection probe in the corresponding water solution to be detected to collect the conductivity of the water solution to be detected and output a TDS detection signal, and then judges the water quality layer of the water solution by the main control circuit, so that the multi-path conductivity measurement device is rapidly applied to the multi-stage water treatment equipment to detect the water quality, thereby reducing the cost and improving the practicability. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0028] Figure 1 The overall block diagram of an embodiment of the multi-path conductivity measurement device of the present application;

[0029] Figure 2 The structural schematic diagram of another embodiment of the multi-path conductivity measurement device of the present application;

[0030] Figure 3 The structural schematic diagram of another embodiment of the multi-path conductivity measurement device of the present application;

[0031] Figure 4 The structural schematic diagram of another embodiment of the multi-path conductivity measurement device of the present application.

[0032] Explanation of the reference numerals:

[0033] Reference Name Reference Name 1 Electric control board 70 Communication module 10 Power module 80 Water treatment equipment 20 TDS detection probe 81 Host computer 30 Main control circuit 41 Temperature sensor 40 Temperature detection circuit 71 Differential amplifier 50 Temperature compensation circuit 72 Relay 60 Display module

[0034] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] In addition, the description such as "first", "second" in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0037] Water is the source of life, and human beings cannot live without water in life and production activities. The quality of drinking water is closely related to human health. The existing water quality detection equipment is very expensive, and is mainly used for the conductivity detection of natural water in the environmental protection field or water treatment process. With the development of aquaculture automation technology, the water quality in the cultivation process needs to be automatically monitored, but the existing conductivity testing equipment cannot be directly connected to the aquaculture automation control system, that is, the existing conductivity testing equipment cannot be quickly applied to water treatment equipment 80 of different levels, thereby affecting the popularization and application of conductivity testing equipment in various water treatment fields. Therefore, the present application provides a multi-channel conductivity measuring device, and the multi-channel TDS detection probe 20 can be quickly applied to water treatment equipment 80 of different levels to detect the conductivity of different aqueous solutions.

[0038] Reference Figure 1 In an embodiment of the present application, the multi-channel conductivity measuring device comprises: an electric control board 1; a plurality of TDS detection probes 20, each of the TDS detection probes 20 is arranged in a corresponding aqueous solution to be measured to collect the conductivity of the aqueous solution to be measured and output a TDS detection signal;

[0039] A main control circuit 30 is arranged on the electric control board 1, and the main control circuit 30 is connected with the plurality of TDS detection probes 20 respectively, and the main control circuit 30 is used for receiving the TDS detection signal and judging the water quality layer of the aqueous solution by table lookup method.

[0040] Wherein, TDS (TOTAL DISSOLVED SOLIDS) means the total solid content dissolved in water in Chinese, and the TDS meter is designed for this meter, which can be seen that the ppm value of inorganic or organic matter in water. It should be noted that the temperature, flow rate and water pollution of the aqueous solution will affect the test of TDS value, that is, the TDS detection probe 20 cannot be used to measure high-temperature water, for example, hot water. If the temperature is too high, the measured TDS value will increase, which will affect its correctness. Therefore, the temperature of the aqueous solution to be measured should be maintained at about 25 degrees Celsius to avoid affecting the correctness of the measured TDS value.

[0041] It is worth noting that the conductivity is the ability of a substance to carry current, and is the inverse of resistivity. In a liquid, the conductivity is often measured in the inverse of resistance to measure the size of the conductive ability of the liquid, and the conductivity of water is a very important indicator of water quality, which can reflect the degree of electrolyte in the water. According to the concentration of electrolyte in the aqueous solution, the conductivity of the aqueous solution is different. By measuring the conductivity of the aqueous solution, the solubility of the electrolyte in the solution can be analyzed, and the water quality layer to which the aqueous solution belongs can be judged.

[0042] In practical application, the conductivity testing device can only be used to detect one aqueous solution, and cannot be directly connected to other aqueous solutions to detect the conductivity of the aqueous solution to judge the water quality of the aqueous solution. The present application sets up multiple TDS probes to be placed in the corresponding aqueous solution to be measured, so as to quickly collect the conductivity values of different aqueous solutions to judge whether the water quality of the aqueous solution meets the standard.

[0043] The main control circuit 30 can be realized by a microcontroller chip, which is not limited here. In practical application, the microcontroller can store the conductivity test signals collected by the conductivity testing device and the conductivity-water quality standard table, and can judge the water quality layer to which the aqueous solution belongs by table lookup method.

[0044] The technical scheme of the present application collects the conductivity of the aqueous solution to be measured by the multiple TDS detection probes 20, realizes the fast detection of the water quality layer of the aqueous solution in different environments by the multi-level water treatment equipment 80. Specifically, the present application places each TDS detection probe 20 in the corresponding aqueous solution to be measured to collect the conductivity of the aqueous solution to be measured and output the TDS detection signal, and then judges the water quality layer to which the aqueous solution belongs through the main control circuit 30, so as to realize the fast application of the multiple conductivity measurement device to the multi-level water treatment equipment 80 to detect the water quality, reduce the measurement cost, and improve the accuracy of the measurement data.

[0045] Reference Figure 2 In an embodiment, the multiple conductivity measurement device comprises:

[0046] The temperature compensation circuit 50 is connected with the main control circuit 30, and the temperature compensation circuit 50 is used for heating / cooling treatment of the aqueous solution;

[0047] The temperature detection circuit 40 is connected with the main control circuit 30, and the temperature detection circuit 40 is used for detecting the temperature value of the aqueous solution to be measured and outputting the corresponding temperature detection signal;

[0048] The main control circuit 30 is used for comparing the temperature value corresponding to the temperature detection signal with the set temperature value, and controlling the temperature compensation circuit 50 to work to adjust the temperature of the aqueous solution to the set temperature value according to the comparison result.

[0049] The temperature compensation circuit 50 can be any temperature compensation circuit that can perform temperature increasing / decreasing process. The set temperature value of the multi-path conductivity measuring device can be 25 degrees Celsius. When the temperature of the water solution is greater than 25 degrees Celsius, the temperature compensation circuit 50 is needed to perform temperature decreasing process, for example, a fan or other device is used to decrease the temperature of the water solution to 25 degrees Celsius for measuring the conductivity. Similarly, when the temperature of the water solution is less than 25 degrees Celsius, the temperature compensation circuit 50 is needed to perform temperature increasing process, for example, a heater or other device is used to increase the temperature of the water solution to 25 degrees Celsius for measuring the conductivity. Thus, the temperature of the water solution cannot be too high or too low, otherwise the accuracy of the measured conductivity will be affected.

[0050] The temperature detection circuit 40 detects the temperature of the water solution and sends the corresponding temperature detection signal to the main control circuit 30. The main control circuit 30 compares the temperature value corresponding to the temperature detection signal with the set temperature value. If the temperature value corresponding to the temperature detection signal is higher than the set temperature value, the temperature compensation circuit 50 is controlled to perform temperature decreasing process to adjust the temperature of the water solution to the set temperature value. If the temperature value corresponding to the temperature detection signal is lower than the set temperature value, the temperature compensation circuit 50 is controlled to perform temperature increasing process to adjust the temperature of the water solution to the set temperature value. Thus, the temperature of the water solution is the same as the set temperature value for the TDS detection probe to collect the TDS detection signal, thereby improving the accuracy of the conductivity.

[0051] Referring to Figure 3 In an embodiment, the temperature detection circuit 40 comprises:

[0052] At least one temperature sensor 41, the detection end of each temperature sensor 41 is used to be placed in the water solution to be measured to collect the temperature of the water solution to be measured.

[0053] In practical application, most of the existing detection devices only have one temperature sensor 41, which can only detect the temperature at a certain time. Since the temperature of the water solution changes with time and environment, the temperature data measured by one temperature sensor 41 is not enough to be a good basis to judge the temperature of the water solution. The embodiment sets multiple temperature sensors 41 to detect the temperature of the water solution, thereby improving the accuracy of the data.

[0054] Further, the temperature sensor 41 can be a thermistor. A thermistor is a sensor resistor, and the resistance value of the thermistor changes with the change of temperature, unlike a general fixed resistor. The thermistor is a semiconductor, and its resistance value decreases sharply with the increase of temperature and presents nonlinearity. When the temperature changes the same, the resistance value of the thermistor changes about 10 times of the lead thermistor, so it can be said that the thermistor is particularly sensitive to the change of temperature. It should be noted that this temperature characteristic of the semiconductor is because the conduction of the semiconductor is the conduction of the carrier (electron, hole), and the number of carriers in the semiconductor is much less than the number of free electrons in the metal, so its resistivity is very large. With the increase of temperature, the number of carriers participating in the conduction of the semiconductor will increase, so the conductivity of the semiconductor will increase, and the resistivity will decrease. Therefore, the embodiment collects the temperature of the aqueous solution through the thermistor, which can improve the accuracy of the data.

[0055] Referring to Figure 2 In an embodiment, the multi-channel conductivity measurement device further comprises:

[0056] A power module 10 is configured to supply power to each circuit to work.

[0057] In the embodiment, the power module 10 provides 24V DC power to each module in the multi-channel conductivity measurement device, so that each module works to detect the conductivity of the aqueous solution.

[0058] Referring to Figure 2 In an embodiment, the multi-channel conductivity measurement device further comprises:

[0059] A communication module 70 is arranged on the control board 1, and the communication module 70 is connected with the master control circuit 30 and the host computer 81 respectively. The communication module 70 is configured to establish a communication connection with the host computer 81.

[0060] The master control circuit 30 is further configured to pack and upload the TDS detection signal to the host computer 81.

[0061] The communication module 70 can adopt one or a combination of multiple communication modules 70 such as Bluetooth, wifi or RS485 module. The communication module 70 can establish a communication connection with the host computer 81.

[0062] In the embodiment, when the multi-channel conductivity measurement device works, the communication module 70 establishes a communication connection with the host computer 81, and sends the TDS detection signal to the host computer 81, so that the staff can monitor the conductivity of the aqueous solution, and thus know the water quality of the aqueous solution.

[0063] Referring to Figure 4In an embodiment, the communication module 70 comprises a differential amplifier 71 connected with the master control circuit 30, and the differential amplifier 71 is used to differentially amplify the TDS detection signal and output.

[0064] In practical application, the TDS detection signal collected by the TDS detection probe 20 is a weak signal, and thus the weak TDS detection signal needs to be amplified by the differential amplifier 71 for signal transmission. The differential amplifier 71 is a commonly used electronic amplifier, also known as a power amplifier. The differential amplifier 71 effectively stabilizes the static operating point by using the symmetry of circuit parameters and negative feedback, and is characterized by amplifying differential signals and suppressing common-mode signals, and can be widely applied to the input stage of direct coupling circuits and measurement circuits.

[0065] Referring to Figure 4 In an embodiment, the communication module 70 further comprises a repeater 72 connected with the differential amplifier 71, and the repeater 72 is used to forward the TDS detection signal to the host computer 81.

[0066] In practical application, the repeater 72 is a device connected to a network line, commonly used for bidirectional forwarding of physical signals between two network nodes. The repeater 72 mainly completes the function of the physical layer, is responsible for bit-by-bit transmission of information on the physical layer of two nodes, and completes the functions of signal copying, adjustment and amplification, so as to extend the length of the network. Generally, the two ends of the repeater 72 are connected to the same medium, but some repeaters 72 can also complete the switching work of different media. The repeater 72 is simple to install, easy to use, and relatively low in price. In this embodiment, the repeater 72 forwards the amplified TDS detection signal to the host computer 81, thereby reducing the communication cost.

[0067] Referring to Figure 2 In an embodiment, the multi-path conductivity measuring device comprises:

[0068] The display module 60 is arranged on the electric control board 1, the display module 60 is connected with the master control circuit 30, and the display module 60 is used to display the temperature value, the set temperature value.

[0069] The display module 60 can adopt any display module 60 that can be used to display data. In this embodiment, a touch screen display (Touch Screen) can be selected. The touch screen display can display data such as conductivity value, temperature value, and set temperature value, and can also allow the user to operate the host computer by gently touching the icons or characters on the display screen with a finger, so that the keyboard and mouse operation is eliminated, and the human-computer interaction is more convenient.

[0070] Referring to Figure 2 The application further provides a water treatment device 80, which comprises a host computer 81 and the multi-path conductivity measuring device described above; the specific structure of the multi-path conductivity measuring device is referred to the above embodiments, and since the water treatment device 80 adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0071] The water treatment device 80 removes some harmful substances in water that are not needed for production and life through various physical and chemical means, and is a device for filtering and purifying water. Since social production and life are closely related to water, the application range of the water treatment field is very wide, and constitutes a huge industrial application.

[0072] In the embodiment, the multi-path conductivity measuring device can be applied to water treatment devices 80 of different levels. The application combines the characteristics of different water qualities, detects the conductivity of the water solution through the multi-path conductivity measuring device, judges the water quality of the water solution, and obtains a water source meeting the corresponding requirements.

[0073] The above is only an optional embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like made under the inventive concept of the application, using the content of the application specification and drawings, is included in the patent protection scope of the application.

Claims

1. A multiplexed conductivity measuring device, characterized by, The multi-channel conductivity measuring device comprises: an electric control board; a plurality of TDS detection probes, each of which is arranged in a corresponding water solution to be measured to collect the conductivity of the water solution to be measured and output a TDS detection signal; a main control circuit arranged on the electric control board, connected with the plurality of TDS detection probes, configured to receive the TDS detection signal and determine the water quality layer of the water solution by table lookup method; a temperature compensation circuit connected with the main control circuit, configured to perform temperature rising and falling processing on the water solution; a temperature detection circuit connected with the main control circuit, configured to detect the temperature value of the water solution to be measured and output a corresponding temperature detection signal; the main control circuit is configured to compare the temperature value corresponding to the temperature detection signal with a set temperature value, and control the temperature compensation circuit to work to adjust the temperature of the water solution to the set temperature value according to the comparison result; a communication module arranged on the electric control board, connected with the main control circuit and an upper computer, configured to establish a communication connection with the upper computer; the main control circuit is further configured to pack and upload the TDS detection signal to the upper computer; the communication module comprises a differential amplifier and a repeater, the differential amplifier is connected with the main control circuit, and is configured to perform differential amplification on the TDS detection signal and output the TDS detection signal; the repeater is connected with the differential amplifier, and is configured to forward the TDS detection signal to the upper computer.

2. The multiplexed conductivity measuring device of claim 1, wherein, The temperature detection circuit comprises: at least one temperature sensor, each temperature sensor is arranged in the water solution to be measured to collect the temperature of the water solution to be measured.

3. The multiplexed conductivity measuring device of claim 2, wherein, The temperature sensor is a thermistor.

4. The multiplexed conductivity measuring device of claim 1, wherein, The multi-channel conductivity measuring device further comprises: a power module, configured to supply power to each circuit to work.

5. The multiplexed conductivity measuring device of claim 1, wherein, The multi-channel conductivity measuring device comprises: a display module arranged on the electric control board, connected with the main control circuit, configured to display the temperature value and the set temperature value.

6. A water treatment apparatus, characterized by, The water treatment equipment comprises an upper computer and the multi-channel conductivity measuring device according to any one of claims 1-5.

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