Turbidity detection system and washing equipment

Abstract

The utility model discloses a turbidity detection system and washing equipment, the turbidity detection system is used for detecting the turbidity of water in a sewage pipeline, and the turbidity detection system comprises a first turbidity detection device and an upper computer. The first turbidity detection device comprises a first sensing module with an annular structure, a second sensing module and a first data processing module; the annular structure penetrates through the sewage pipeline, and the first sensing module outputs a first voltage signal based on a first capacitance value of the first sensing module. The second sensing module outputs a second voltage signal based on a second capacitance value of the second sensing module, and the second capacitance value changes based on the change of the environment variable. The first data processing module is used for receiving the first voltage signal and the second voltage signal and outputting a first difference value between the first voltage signal and the second voltage signal. The upper computer is used for receiving the first difference value and determining the turbidity of water in the sewage pipeline based on the difference value between the first difference value and the reference voltage value. In this way, cost can be reduced, and installation is convenient.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of turbidity detection, and particularly relate to a turbidity detection system and a washing device. BACKGROUND

[0002] In a home scenario, there are many washing devices, such as washing machines, dishwashers, floor washing machines, etc., which all have drainage after washing. And there is a turbidity sensor to determine whether the washing is clean. If it does not reach the cleaning degree, it will continue to wash until it is clean.

[0003] At present, the turbidity sensor usually includes an optoelectronic product (such as an emitting diode and a receiving diode) and a shell, and a water pipe is arranged between the emitting diode and the receiving diode, and the turbidity of the water in the water pipe is determined by the parameter change received by the receiving diode.

[0004] However, the turbidity sensor is installed in a troublesome and complex manner, resulting in a high cost of the turbidity sensor. CONTENT OF THE INVENTION

[0005] Embodiments of the present application provide a turbidity detection system and a washing device, which can reduce the cost and are easy to install.

[0006] In a first aspect, embodiments of the present application provide a turbidity detection system for detecting the turbidity of water in a sewage pipeline, the turbidity detection system comprising a first turbidity detection device and an upper computer, the first turbidity detection device comprising:

[0007] a first sensing module of a ring structure, the ring structure being used to pass through the sewage pipeline, the first sensing module being used to output a first voltage signal based on a first capacitance value of the first sensing module, wherein the turbidity of the water in the sewage pipeline and the first capacitance value present a positive correlation;

[0008] a second sensing module, used to output a second voltage signal based on a second capacitance value of the second sensing module, wherein the second capacitance value changes based on the change of an environmental variable, and the environmental variable at least includes an environmental temperature and an environmental humidity;

[0009] a first data processing module, connected with the first sensing module and the second sensing module respectively, used to receive the first voltage signal and the second voltage signal, and output a first difference value between the first voltage signal and the second voltage signal;

[0010] the upper computer, connected with the first data processing module, used to receive the first difference value, and determine the turbidity of the water in the sewage pipeline based on the difference between the first difference value and a reference voltage value.

[0011] In one or more embodiments, the turbidity detection system is also used for detecting turbidity of water in a clear water pipeline, the turbidity detection system further comprises a second turbidity detection device, the second turbidity detection device comprises:

[0012] a third induction module in a ring structure, the ring structure is used for penetrating through the clear water pipeline, the third induction module is used for outputting a third voltage signal based on a third capacitance value of the third induction module, wherein the turbidity of water in the clear water pipeline and the third capacitance value present a positive correlation;

[0013] a fourth induction module, used for outputting a fourth voltage signal based on a fourth capacitance value of the fourth induction module, wherein the fourth capacitance value changes based on a change of the environmental variable;

[0014] a second data processing module, connected with the third induction module, the fourth induction module and the host computer respectively, used for receiving the third voltage signal and the fourth voltage signal, and outputting the reference voltage value to the host computer based on a second difference value between the third voltage signal and the fourth voltage signal.

[0015] In one or more embodiments, the first turbidity detection device further comprises a first printed circuit board and a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor arranged on the first printed circuit board;

[0016] the first resistor is connected between the first induction module and the first data processing module, the second resistor is connected between the second induction module and the first data processing module, the third resistor and the fourth resistor are both connected between the first data processing module and the host computer, the first capacitor is connected between a power supply end and a grounding end of the first data processing module, the second capacitor is connected in parallel with the first capacitor, the power supply end of the first data processing module is connected with a power supply, and the grounding end of the first data processing module is grounded;

[0017] wherein the first data processing module is arranged on the first printed circuit board.

[0018] In one or more embodiments, the first turbidity detection device further comprises a first interface, a fifth resistor and a sixth resistor arranged on the first printed circuit board;

[0019] a first end of the first interface is connected with the power supply through the sixth resistor, a second end of the first interface is grounded through the fifth resistor, a third end of the first interface is connected with the first data processing module through the fourth resistor, a fourth end of the first interface is connected with the first data processing module through the third resistor, and the first interface is connected with the host computer.

[0020] In one or more embodiments, the first printed circuit board is provided with a mounting through hole, and the first induction module is arranged around the mounting through hole, wherein the first induction module is a copper foil.

[0021] In one or more embodiments, the first induction module is a spring, and the spring is arranged on the first printed circuit board.

[0022] In one or more embodiments, the second induction module is a solder pad arranged on the first printed circuit board.

[0023] In one or more embodiments, the second turbidity detection device further comprises a second printed circuit board, and a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor and a fourth capacitor arranged on the second printed circuit board.

[0024] The seventh resistor is connected between the third induction module and the second data processing module, the eighth resistor is connected between the fourth induction module and the second data processing module, the ninth resistor and the tenth resistor are both connected between the second data processing module and the host computer, the third capacitor is connected between the power supply end and the ground end of the second data processing module, the fourth capacitor is connected in parallel with the third capacitor, the power supply end of the second data processing module is connected to a power supply, and the ground end of the second data processing module is grounded.

[0025] In one or more embodiments, the second data processing module is arranged on the second printed circuit board.

[0026] In one or more embodiments, the second turbidity detection device further comprises a second interface, an eleventh resistor and a twelfth resistor arranged on the second printed circuit board.

[0027] The first end of the second interface is connected to a power supply through the twelfth resistor, the second end of the second interface is grounded through the eleventh resistor, the third end of the second interface is connected to the second data processing module through the tenth resistor, and the fourth end of the second interface is connected to the second data processing module through the ninth resistor.

[0028] In a second aspect, the embodiments of the present application provide a washing equipment, comprising a sewage pipeline, a clean water pipeline and a turbidity detection system as described above.

[0029] The beneficial effects of the present application are: the turbidity detection system of the embodiment of the present application is used for detecting the turbidity of water in a sewage pipeline. The turbidity detection system comprises a first turbidity detection device and a host computer. The first turbidity detection device comprises a first sensing module, a second sensing module and a first data processing module in a ring structure. The ring structure is used to pass through the sewage pipeline. The first sensing module is used to output a first voltage signal based on a first capacitance value of the first sensing module, wherein the turbidity of water in the sewage pipeline and the first capacitance value present a positive correlation relationship. The second sensing module is used to output a second voltage signal based on a second capacitance value of the second sensing module, wherein the second capacitance value changes based on the change of an environmental variable, and the environmental variable at least includes environmental temperature and environmental humidity. The first data processing module is connected with the first sensing module and the second sensing module respectively, and is used to receive the first voltage signal and the second voltage signal, and output a first difference value between the first voltage signal and the second voltage signal. The host computer is connected with the first data processing module, and is used to receive the first difference value, and determine the turbidity of water in the sewage pipeline based on the difference between the first difference value and a reference voltage value. On the one hand, the turbidity of water in the sewage pipeline can be detected only by directly passing the sewage pipeline through the ring structure, and compared with the turbidity sensor in the related art, the scheme of the present application is more convenient to install; on the other hand, the prices of the first sensing module and the second sensing module with the sensing capacitance characteristic are usually lower than the price of the turbidity sensor comprising a transmitting diode and a receiving diode, and it can be seen that the cost of the present application is lower compared with the turbidity sensor in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0030] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document. These illustrations do not limit the application, but are intended to help illustrate the application and to provide a working example of the application to those of ordinary skill in the art. Where the same numbers are used throughout the drawings / figures, it is to be understood that those numbers are for generically identical or like components of the application as throughout this detailed description.

[0031] Figure 1 is a structural diagram of a turbidity detection system provided by an embodiment of the present application Figure 1 ;

[0032] Figure 2 is a structural diagram of a first turbidity detection device and a sewage pipeline provided by an embodiment of the present application;

[0033] Figure 3 is a structural diagram of a turbidity detection system provided by an embodiment of the present application Figure 2 ;

[0034] Figure 4 is a structural diagram of a second turbidity detection device and a clean water pipeline provided by an embodiment of the present application;

[0035] Figure 5 is a circuit structural diagram of a turbidity detection system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and detailedly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain and not limit the present application.

[0037] It should be noted that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements can exist between them.

[0038] In addition, the technical features involved in each of the embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0039] Please refer to Figure 1 With Figure 2 , Figure 1 A structure diagram of a turbidity detection system provided by an embodiment of the present application is shown in the figure, Figure 2 A structure diagram of a first turbidity detection device and a sewage pipeline provided by an embodiment of the present application is shown in the figure. The turbidity detection system 1000 is used to detect the turbidity of water in the sewage pipeline 2000. The turbidity detection system 1000 includes the first turbidity detection device 100 and the upper computer 200.

[0040] The upper computer 200 is a concept corresponding to the lower computer, and usually refers to a high-level system for control or management. The upper computer 200 is usually responsible for monitoring and controlling the entire system, communicating with the lower computer, and commanding and controlling the lower computer. The upper computer can be a computer, an integrated controller, a PLC (Programmable Logic Controller), etc. In this embodiment, the lower computer is the first data processing module 30 in the first turbidity detection device 100.

[0041] The first turbidity detection device 100 includes the first sensing module 101, the second sensing module 102, and the first data processing module 103.

[0042] The first sensing module 101 is in a ring structure, and the ring structure is used to pass through the sewage pipeline 2000, i.e., the sewage pipeline 2000 passes through the hollow part of the ring structure. The first sensing module 101 is used to output a first voltage signal based on a first capacitance value of the first sensing module 101, wherein the first capacitance value of the first sensing module 101 is the capacitance value of the sensing capacitance of the first sensing module 101. The turbidity of water in the sewage pipeline 2000 and the first capacitance value present a positive correlation, i.e., the greater the turbidity of water in the sewage pipeline 2000, the greater the first capacitance value; the smaller the turbidity of water in the sewage pipeline 2000, the smaller the first capacitance value.

[0043] The first turbidity detection device 100 further comprises a first printed circuit board 104. The printed circuit board is a PCB (Printed Circuit Board) board, also known as a printed wiring board, which is an important electronic component, a support body of electronic components, and a carrier for electrical interconnection of electronic components.

[0044] In a specific embodiment, as shown in part A of Figure 2 The first sensing module 101 is a spring, which is arranged on the first printed circuit board 104, and the sewage pipeline 2000 passes through the hollow part of the spring. The spring is electrically connected to the first data processing module 103. The spring can generate an induced capacitance based on the turbidity of the water in the sewage pipeline 2000, and generate a corresponding first voltage signal based on the capacitance value of the induced capacitance. The first voltage signal is input to the first data processing module 103.

[0045] In a specific embodiment, as shown in part B of Figure 2 The first printed circuit board 104 is provided with a mounting through hole, and the first sensing module 101 is arranged around the mounting through hole. The first sensing module 101 is a copper foil. The copper foil is a kind of negative electrolytic material, which is a thin and continuous metal foil deposited on the base layer of the first printed circuit board 104. The copper foil can be used as a conductor of the first printed circuit board 104. The sewage pipeline 2000 passes through the hollow part of the mounting through hole. The copper foil is electrically connected to the first data processing module 103. The copper foil can generate an induced capacitance based on the turbidity of the water in the sewage pipeline 2000, and generate a corresponding first voltage signal based on the capacitance value of the induced capacitance. The first voltage signal is input to the first data processing module 103.

[0046] The second sensing module 102 is used to output a second voltage signal based on a second capacitance value of the second sensing module 102. The second capacitance value of the second sensing module 102 is the capacitance value of the induced capacitance of the second sensing module 102. The second capacitance value changes based on changes in environmental variables, which at least include environmental temperature and environmental humidity. The second sensing module 102 can output a corresponding second voltage signal based on the environmental variables. Since the first sensing module 101 and the second sensing module 102 are in the same environment, the detection result of the first sensing module 101 can be corrected based on the detection result of the second sensing module 102 to eliminate the influence of environmental variables on the first sensing module 101, thereby improving the accuracy and reliability of the detection of the turbidity of the water in the sewage pipeline 2000.

[0047] In some specific embodiments, the second sensing module 102 is a soldering pad provided on the first printed circuit board 104. The soldering pad is a metal area on the first printed circuit board 104 for connecting electronic components. The soldering pad is mainly used for soldering the pins or terminals of the electronic components, fixing the components by soldering and transmitting electrical signals and current. The soldering pad is generally a circular or rectangular metal area, the surface of which is covered with solder paste to facilitate soldering of components. The soldering pad is electrically connected to the first data processing module 103, and the soldering pad can generate a sensed capacitance value based on the environmental variable, and generate a corresponding second voltage signal based on the capacitance of the sensed capacitance, and the second voltage signal is input to the first data processing module 103.

[0048] The first data processing module 103 is connected to the first sensing module 101 and the second sensing module 102. The first data processing module 103 is configured to receive the first voltage signal and the second voltage signal and output a first difference between the first and second voltage signals. The first difference represents the accurate data obtained after eliminating the effects of environmental variables on the first sensing module 101.

[0049] The host computer 200 is connected to the first data processing module 103. The host computer 200 is configured to receive the first difference and determine the turbidity of the water in the sewage pipe 2000 based on the difference between the first difference and a reference voltage value. The reference voltage value may be a preset voltage value, which may be set based on actual application scenarios and is not specifically limited in this embodiment of the present application.

[0050] In some specific embodiments, the reference voltage value may be a voltage value corresponding to the turbidity of the water in the clean water pipe. Subsequently, when the difference between the first difference value and the reference voltage value is less than or equal to a preset difference threshold, it is determined that the turbidity of the water in the sewage pipe 2000 is close to or equal to the turbidity of the water in the clean water pipe, i.e., the turbidity of the water in the sewage pipe 2000 is determined to be low, which may indicate that the washing equipment of the turbidity detection system 1000 has completed the washing process. When the difference between the first difference value and the reference voltage value is greater than the preset difference threshold, it is determined that the turbidity of the water in the sewage pipe 2000 is greater than the turbidity of the water in the clean water pipe, i.e., the turbidity of the water in the sewage pipe 2000 is determined to be high, which may indicate that the washing equipment of the turbidity detection system 1000 has not yet completed the washing process and should continue cleaning. The preset difference threshold can be set based on actual application scenarios and is not specifically limited in this embodiment of the present application.

[0051] In this embodiment, on the one hand, the turbidity of the water in the sewage pipeline can be detected by directly passing the sewage pipeline 2000 through the ring structure, and compared with the related art in which the water pipe needs to be arranged between the transmitting diode and the receiving diode, the scheme of the present application is more convenient to install; on the other hand, the prices of the first sensing module 101 and the second sensing module 102 having the inductive capacitance characteristic are generally lower than the price of the turbidity sensor including the transmitting diode and the receiving diode, for example, the price of the spring or the copper foil is generally less than half of the price of the turbidity sensor including the transmitting diode and the receiving diode, so it can be seen that, compared with the turbidity sensor in the related art, the cost of the present application is lower; on the other hand, the scheme of the related art using the transmitting diode and the receiving diode can only be applied to the application scene in which the water pipe is a transparent water pipe, while the present application can be applied to transparent and opaque pipes, so it can be seen that the present application has stronger practicability.

[0052] Please refer to Figure 3 and Figure 4 , Figure 1 the structure diagram of the turbidity detection system provided by another embodiment of the present application, Figure 2 the structure diagram of the second turbidity detection device and the clean water pipeline provided by the embodiment of the present application. The turbidity detection system 1000 is also used to detect the turbidity of the water in the clean water pipeline 3000. The turbidity detection system 1000 further includes a second turbidity detection device 300. The second turbidity detection device 300 includes a third sensing module 301, a fourth sensing module 302, and a second data processing module 303.

[0053] Among them, relative to the upper computer 200, the second data processing module 303 is also a lower computer.

[0054] The third sensing module 301 is a ring structure, and the ring structure is used to pass through the clean water pipeline 3000, that is, the clean water pipeline 3000 passes through the hollow part of the ring structure. The third sensing module 301 is used to output a third voltage signal based on a third capacitance value of the third sensing module 301, wherein the third capacitance value of the third sensing module 301 is the capacitance value of the inductive capacitance of the third sensing module 301. The turbidity of the water in the clean water pipeline 3000 and the third capacitance value present a positive correlation, that is, the greater the turbidity of the water in the clean water pipeline 3000, the greater the third capacitance value; the smaller the turbidity of the water in the clean water pipeline 3000, the smaller the third capacitance value.

[0055] The second turbidity detection device 300 further includes a second printed circuit board 304.

[0056] In a specific embodiment, as Figure 3As shown in section C of the figure, the third sensing module 301 is a spring mounted on the second printed circuit board 304, with the clean water pipe 3000 passing through its hollow portion. The spring is electrically connected to the second data processing module 303. The spring generates an inductive capacitance based on the turbidity of the water in the clean water pipe 3000 and generates a corresponding third voltage signal based on the capacitance of the inductive capacitance. The third voltage signal is then input to the second data processing module 303.

[0057] In a specific embodiment, Figure 3 As shown in section C of the figure, the second printed circuit board 304 is provided with a mounting hole. The third sensing module 301 is located within and surrounds the mounting hole. The third sensing module 301 is made of copper foil. The clean water pipe 3000 passes through the hollow portion of the mounting hole. The copper foil is electrically connected to the second data processing module 303. The copper foil generates a sensing capacitance based on the turbidity of the water in the clean water pipe 3000. Based on the capacitance of the sensing capacitance, a corresponding third voltage signal is generated. The third voltage signal is then input into the second data processing module 303.

[0058] The fourth sensing module 302 is configured to output a fourth voltage signal based on a fourth capacitance value of the fourth sensing module 302, wherein the fourth capacitance value of the fourth sensing module 302 is the capacitance value of the sensing capacitor of the fourth sensing module 302. The fourth capacitance value changes based on changes in environmental variables. The fourth sensing module 302 can output a corresponding second voltage signal based on environmental variables, and the third sensing module 301 and the fourth sensing module 302 are in the same environment. Then, the detection result of the third sensing module 301 can be corrected based on the detection result of the fourth sensing module 302 to eliminate the influence of environmental variables on the third sensing module 301, thereby improving the accuracy and reliability of the detection of the turbidity of water in the clean water pipeline 3000.

[0059] In some specific embodiments, the fourth sensing module 302 is a pad disposed on the second printed circuit board 304. The pad is electrically connected to the second data processing module 303. The pad can generate a sensing capacitance based on environmental variables and generate a corresponding fourth voltage signal based on the capacitance of the sensing capacitance. The fourth voltage signal is input to the second data processing module 303.

[0060] The second data processing module 303 is connected to the third sensing module 301, the fourth sensing module 302, and the host computer 200, respectively. The second data processing module 303 is configured to receive the third and fourth voltage signals and output a reference voltage value to the host computer based on a second difference between the third and fourth voltage signals. The second difference is the accurate data obtained after eliminating the effects of environmental variables on the third sensing module 301. Furthermore, the second difference is the voltage value corresponding to the turbidity of the water in the clean water pipeline 3000. The second difference can be set as the reference voltage value.

[0061] This embodiment further provides a method for determining a reference voltage value in real time to match the actual application scenario, thereby ultimately improving the accuracy and reliability of turbidity detection of water in the sewage pipe 2000.

[0062] In some embodiments, while maintaining Figures 1-4 On the basis of the structure shown in the figure remaining unchanged, another method can be used to determine the turbidity of water in the sewage pipe 2000 or the clean water pipe 3000. Taking the determination of the turbidity of water in the sewage pipe 2000 as an example, the specific implementation process is as follows:

[0063] The first data processing module 103 is connected to the first sensing module 101 and the second sensing module 102, respectively. The first data processing module 103 is configured to receive a first voltage signal and a second voltage signal, and determine a first number of times the first sensing capacitor of the first sensing module needs to be charged based on the first voltage signal, and a second number of times the second sensing capacitor of the second sensing module needs to be charged based on the second voltage signal, and output a third difference between the first number and the second number. The turbidity of the water in the sewage pipe 2000 is positively correlated with the first number, i.e., the greater the turbidity of the water in the sewage pipe 2000, the greater the first number; and the smaller the turbidity of the water in the sewage pipe 2000, the smaller the first number. The first number is the number of times the first sensing capacitor needs to be fully charged. The more times the first sensing capacitor needs to be charged, the greater the capacitance (i.e., the first capacitance value) of the corresponding first sensing capacitor; conversely, the fewer times the first sensing capacitor needs to be charged, the smaller the capacitance of the corresponding first sensing capacitor. In the subsequent embodiments of the present application, the same is true. The more times each sensing capacitor (such as the second sensing capacitor) needs to be charged, the larger the capacitance of each sensing capacitor. Conversely, the fewer times each sensing capacitor needs to be charged, the smaller the capacitance of each sensing capacitor.

[0064] The second number changes based on changes in environmental variables. If the first sensing module 101 and the second sensing module 102 are in the same environment, the detection result of the first sensing module 101 (i.e., the first number) can be corrected based on the detection result of the second sensing module 102 (i.e., the second number) to eliminate the impact of the environmental variables on the first sensing module 101 and improve the accuracy and reliability of the turbidity detection of the water in the sewage pipe 2000. The third difference is the accurate data obtained after eliminating the impact of the environmental variables on the first sensing module 101.

[0065] The host computer 200 is connected with the first data processing module 103. The host computer 200 is configured to receive the third difference value, and determine the turbidity of the water in the sewage pipeline 2000 based on the difference between the third difference value and a reference value. The reference value can be a preset number of times, which can be set based on an actual application scenario, and the embodiments of the present application do not make specific limitations thereon. In some specific embodiments, the reference value can be determined based on the turbidity of the water in the clean water pipeline, which is similar to the determination method of the above-mentioned reference voltage value, and is within the scope easily understood by those skilled in the art, which will not be described here.

[0066] Please refer to Figure 5 , Figure 5 An exemplary circuit structure of the turbidity detection system is shown. As shown in Figure 5 , the first turbidity detection device 100 further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1 and a second capacitor C2 arranged on the first printed circuit board 104. The first data processing module 103 is also arranged on the first printed circuit board 104.

[0067] Among them, the first resistor R1 is connected between the first sensing module 101 and the first data processing module 103, the second resistor R2 is connected between the second sensing module 102 and the first data processing module 103, the third resistor R3 and the fourth resistor R4 are both connected between the first data processing module 103 and the host computer 200, the first capacitor C1 is connected between the power supply end and the ground end of the first data processing module 103 (i.e. the 5th pin and the 7th pin of the first data processing module 103), the second capacitor C2 is connected in parallel with the first capacitor C1, the power supply end of the first data processing module 103 is connected with the power supply V1, and the ground end of the first data processing module 103 is grounded GND.

[0068] Among them, the first data processing module 103 can adopt a microcontroller unit (MCU) or a digital signal processing (DSP) controller, etc. In some specific embodiments, the first data processing module 103 adopts an MCU with a model number of AS9070D.

[0069] The first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are used for current limiting, and the first capacitor C1 and the second capacitor C2 are used for filtering.

[0070] In this embodiment, the first turbidity detection device 100 further includes a first interface J1, a fifth resistor R5 and a sixth resistor R6 arranged on the first printed circuit board 104.

[0071] The first end of the first interface J1 (i.e., the first pin of the first interface J1) is connected to a power supply through a sixth resistor R6, the second end of the first interface J1 (i.e., the second pin of the first interface J1) is grounded through a fifth resistor R5, the third end of the first interface J1 (i.e., the third pin of the first interface J1) is connected to the first data processing module 103 through a fourth resistor R4, the fourth end of the first interface J1 is connected to the first data processing module 103 through a third resistor R3, and the first interface J1 is connected to the host computer 200.

[0072] Specifically, the first interface J1 can be connected to the host computer 200 through a wire harness (including a signal wire harness and a power wire harness). The fifth resistor R5 and the sixth resistor R6 are current-limiting resistors.

[0073] In this embodiment, the second turbidity detection device 300 further includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a third capacitor C3, and a fourth capacitor C4 arranged on the second printed circuit board 304. The second data processing module 303 is arranged on the second printed circuit board 304.

[0074] The seventh resistor R7 is connected between the third sensing module 301 and the second data processing module 303, the eighth resistor R8 is connected between the fourth sensing module 302 and the second data processing module 303, the ninth resistor R9 and the tenth resistor R10 are both connected between the second data processing module 303 and the host computer 200, the third capacitor C3 is connected between the power supply end and the ground end of the second data processing module 303 (i.e., the fifth pin and the seventh pin of the second data processing module 303), the fourth capacitor C4 is connected in parallel with the third capacitor C3, the power supply end of the second data processing module 303 is connected to the power supply V1, and the ground end of the second data processing module 303 is grounded GND.

[0075] The second data processing module 303 can be a microcontroller unit (MCU) or a digital signal processing (DSP) controller, etc. In some specific embodiments, the second data processing module 303 is an MCU with a model number AS9070D.

[0076] The seventh resistor R7, the eighth resistor R8, the ninth resistor R9, and the tenth resistor R10 are used for current limiting, and the third capacitor C3 and the fourth capacitor C4 are used for filtering.

[0077] In this embodiment, the second turbidity detection device 300 further includes a second interface J2, an eleventh resistor R11, and a twelfth resistor R12 arranged on the second printed circuit board 304.

[0078] The first end of the second interface J2 (i.e., the first pin of the second interface J2) is connected to the power supply V1 through the twelfth resistor R12, the second end of the second interface J2 (i.e., the second pin of the second interface J2) is grounded through the eleventh resistor R11, the third end of the second interface J2 (i.e., the third pin of the second interface J2) is connected to the second data processing module 303 through the tenth resistor R10, and the fourth end of the second interface J2 (i.e., the fourth pin of the second interface J2) is connected to the second data processing module 303 through the ninth resistor R9.

[0079] Specifically, the second interface J2 can be connected to the host computer 200 through a wire harness (including a signal wire harness and a power wire harness). The eleventh resistor R11 and the twelfth resistor R12 are current limiting resistors.

[0080] The embodiments of the present application also provide a washing device, which comprises a sewage pipeline, a clean water pipeline, and the turbidity detection system 1000 in any of the embodiments of the present application.

[0081] In some embodiments, the washing device is a washing machine, a dish washing machine, or a floor washing machine.

[0082] The above description is only for the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

[0083] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; the technical features of the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order. Those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A turbidity detection system, characterized in that: Used to detect the turbidity of water in a sewage pipe, the turbidity detection system includes a first turbidity detection device and a host computer, wherein the first turbidity detection device includes: a first sensing module having a ring structure, the ring structure being configured to pass through the sewage pipe, the first sensing module being configured to output a first voltage signal based on a first capacitance value of the first sensing module, wherein the turbidity of water in the sewage pipe is positively correlated with the first capacitance value; a second sensing module, configured to output a second voltage signal based on a second capacitance value of the second sensing module, wherein the second capacitance value changes based on a change in an environmental variable, the environmental variable including at least an ambient temperature and an ambient humidity; a first data processing module, connected to the first sensing module and the second sensing module, respectively, configured to receive the first voltage signal and the second voltage signal, and output a first difference between the first voltage signal and the second voltage signal; The host computer is connected to the first data processing module, and is used to receive the first difference and determine the turbidity of the water in the sewage pipe based on the difference between the first difference and a reference voltage value.

2. The turbidity detection system according to claim 1, characterized in that: Also used for detecting the turbidity of water in a clean water pipeline, the turbidity detection system further comprises a second turbidity detection device, the second turbidity detection device comprising: a third sensing module having a ring structure, the ring structure being configured to pass through the clean water pipeline, the third sensing module being configured to output a third voltage signal based on a third capacitance value of the third sensing module, wherein the turbidity of water in the clean water pipeline is positively correlated with the third capacitance value; a fourth sensing module, configured to output a fourth voltage signal based on a fourth capacitance value of the fourth sensing module, wherein the fourth capacitance value changes based on a change in the environmental variable; The second data processing module is connected to the third sensing module, the fourth sensing module and the host computer respectively, and is used to receive the third voltage signal and the fourth voltage signal, and output the reference voltage value to the host computer based on a second difference between the third voltage signal and the fourth voltage signal.

3. The turbidity detection system according to claim 1 or 2, characterized in that: The first turbidity detection device further includes a first printed circuit board and a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a second capacitor provided on the first printed circuit board; The first resistor is connected between the first sensing module and the first data processing module, the second resistor is connected between the second sensing module and the first data processing module, the third resistor and the fourth resistor are both connected between the first data processing module and the host computer, the first capacitor is connected between the power supply terminal and the ground terminal of the first data processing module, the second capacitor is connected in parallel with the first capacitor, the power supply terminal of the first data processing module is connected to a power supply, and the ground terminal of the first data processing module is grounded; Wherein, the first data processing module is arranged on the first printed circuit board.

4. The turbidity detection system according to claim 3, characterized in that: The first turbidity detection device further includes a first interface, a fifth resistor, and a sixth resistor provided on the first printed circuit board; The first end of the first interface is connected to the power supply through the sixth resistor, the second end of the first interface is grounded through the fifth resistor, the third end of the first interface is connected to the first data processing module through the fourth resistor, the fourth end of the first interface is connected to the first data processing module through the third resistor, and the first interface is connected to the host computer.

5. The turbidity detection system according to claim 3, characterized in that: The first printed circuit board is provided with a mounting through hole, and the first sensing module is provided in and surrounds the mounting through hole, wherein the first sensing module is copper foil.

6. The turbidity detection system according to claim 3, characterized in that: The first sensing module is a spring, and the spring is arranged on the first printed circuit board.

7. The turbidity detection system according to claim 3, characterized in that: The second sensing module is a pad disposed on the first printed circuit board.

8. The turbidity detection system according to claim 2, characterized in that: The second turbidity detection device further includes a second printed circuit board and a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor, and a fourth capacitor provided on the second printed circuit board; The seventh resistor is connected between the third sensing module and the second data processing module, the eighth resistor is connected between the fourth sensing module and the second data processing module, the ninth resistor and the tenth resistor are both connected between the second data processing module and the host computer, the third capacitor is connected between the power supply terminal and the ground terminal of the second data processing module, the fourth capacitor is connected in parallel with the third capacitor, the power supply terminal of the second data processing module is connected to a power supply, and the ground terminal of the second data processing module is grounded; Wherein, the second data processing module is arranged on the second printed circuit board.

9. The turbidity detection system according to claim 8, characterized in that: The second turbidity detection device further includes a second interface, an eleventh resistor, and a twelfth resistor provided on the second printed circuit board; The first end of the second interface is connected to the power supply through the twelfth resistor, the second end of the second interface is grounded through the eleventh resistor, the third end of the second interface is connected to the second data processing module through the tenth resistor, and the fourth end of the second interface is connected to the second data processing module through the ninth resistor.

10. A washing device, characterized in that: The invention comprises a sewage pipe, a clean water pipe and a turbidity detection system according to any one of claims 1 to 9.

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