Sewage detection method and system

Abstract

The present invention discloses a sewage detection method and system, wherein the method performs detection through a sewage detection system, the sewage detection system comprising a sewage tank, a transmitting module disposed on the outer wall of the sewage tank, and a receiving module disposed on one side of the transmitting module. The method comprises the following steps: the transmitting module transmits a photoelectric signal that penetrates the side wall of the sewage tank and at least partially reaches a storage space formed in the sewage tank, the photoelectric signal is reflected to the receiving module via the side wall of the sewage tank and / or a water body to be detected disposed in the storage space; the photoelectric signal received by the receiving module is judged to obtain a water body status result. The technical solution of the present invention relates to the field of sewage treatment technology, wherein the photoelectric signal passes through the side wall of the sewage tank and the water body to be detected in the storage space and is reflected and received, and the water body status is judged by the photoelectric signal received by the receiving module, thereby further increasing the detection accuracy of the sewage detection method.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sewage detection method and system. Background Art

[0002] With the improvement of living standards, people have gradually had higher demands for home cleaning. Cleaning products such as sweepers, floor scrubbers, carpet cleaners or steam mops have appeared one after another. Household cleaning equipment usually needs to be equipped with a sewage tank to collect stains or sewage after cleaning to further improve the cleaning effect.

[0003] In related technologies, the conductivity of the medium between two electrodes placed in a sewage tank is usually used to determine the state of the water. However, the treatment method using electrodes for detection is easily affected by the corrosion of the electrodes by sewage during use, and the measurement results are inaccurate. In addition, the detection accuracy of the conductive property of the medium between the electrodes as a monitoring indicator is low, and it is impossible to accurately distinguish whether there is foam or other media in the accommodating space formed in the sewage tank.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present invention is to provide a sewage detection method and system, aiming to solve the technical problem that the specific state of water in a sewage tank is difficult to distinguish.

[0006] To achieve the above-mentioned object, the sewage detection method proposed in the present invention is performed through a sewage detection system. The sewage detection system includes a sewage tank, a transmitting module provided on the outer wall of the sewage tank, and a receiving module provided on one side of the transmitting module. The steps of the method include:

[0007] S10: The transmitting module transmits a photoelectric signal that penetrates the side wall of the sewage tank and at least partially reaches the accommodating space formed in the sewage tank, and the photoelectric signal is reflected by the side wall of the sewage tank and / or the water body to be measured set in the accommodating space to the receiving module;

[0008] S20: judging the photoelectric signal received by the receiving module to obtain a water state result.

[0009] Optionally, the receiving module includes a near-end receiving element and a far-end receiving element, and the photoelectric signal includes a near-end signal and a far-end signal. The step S10 includes:

[0010] S11: The transmitting module transmits a near-end signal, which is reflected by the side wall of the sewage tank and / or the water body to be measured arranged in the accommodating space formed by the sewage tank to the near-end receiving element;

[0011] S12: The transmitting module transmits a remote signal, which is reflected to the remote receiving element via the side wall of the sewage tank and / or the water body to be measured disposed in the accommodating space formed by the sewage tank.

[0012] Optionally, the step S20 includes:

[0013] S21: judging the proximal signal received by the proximal receiving component to obtain a proximal judgment result;

[0014] S22: judging the remote signal received by the remote receiving component to obtain a remote judgment result;

[0015] S23: Perform judgment based on the proximal judgment result and the distal judgment result to obtain the water body status result.

[0016] Optionally, the step S21 includes:

[0017] S211: Converting the received near-end signal into a near-end digital signal;

[0018] S212: Compare the near-end digital signal strength with a near-end preset value to obtain a near-end judgment result.

[0019] Optionally, the step S22 includes:

[0020] S221: Converting the received remote signal into a remote digital signal;

[0021] S222: Compare the remote digital signal strength with the remote preset value to obtain a remote judgment result.

[0022] Optionally, the step S23 includes:

[0023] S231: If the near-end judgment result is a near-end strong signal and the far-end judgment result is a far-end strong signal, the water state result is obtained as a foam state;

[0024] S232: If the near-end judgment result is a strong near-end signal and the far-end judgment result is a weak far-end signal, the water body state result is obtained as no water state;

[0025] S233: If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end strong signal, the water body state result is obtained as sewage state;

[0026] S234: If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end weak signal, the water body state result is a clear water state.

[0027] Furthermore, to achieve the above-mentioned objectives, the present invention further provides a sewage detection system for use in the sewage detection method described in any of the above-mentioned embodiments, the sewage detection system comprising a sewage tank, a transmitting module, and a receiving module. A light-transmitting fixed structure is provided on the outer wall of the sewage tank; the transmitting module is fixedly mounted on the fixed structure and is configured to transmit photoelectric signals; and the receiving module is mounted on the fixed structure and is disposed opposite to one side of the transmitting module and is configured to receive photoelectric signals.

[0028] Optionally, the receiving module includes at least two receiving members, wherein the two receiving members extend from the fixed structure toward the accommodating space and have a height difference. The receiving member with the lower extension height is defined as the proximal receiving member, and the other receiving member is defined as the distal receiving member. The distal receiving member and the transmitting module are arranged on both sides of the proximal receiving member.

[0029] Optionally, the transmitting module is a light emitting diode;

[0030] And / or, the receiving element is a photosensitive receiver.

[0031] Optionally, the sewage detection system includes:

[0032] At least two transmitting modules, the at least two transmitting modules are arranged at intervals along the height direction of the sewage tank; and

[0033] At least two receiving modules, the number of the receiving modules corresponding to the number of the transmitting modules.

[0034] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0035] The photoelectric signal is reflected by the side wall of the sewage tank or the accommodating space formed in the sewage tank, and the different water body results received are used to judge the change of the photoelectric signal propagation path, and then the specific state of the water body to be tested is obtained, and a clear distinction is made between the states of air, clean water, sewage and bubbles in the water, further refining the types of water body states that can be detected and improving the detection accuracy of the sewage detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0037] Figure 1Schematic diagram of the structure of an embodiment of a sewage detection system involved in the sewage detection method of the present invention;

[0038] Figure 2 for Figure 1 A cross-sectional schematic diagram of an embodiment at an angle;

[0039] Figure 3 for Figure 1 A partial cross-sectional view of another embodiment;

[0040] Figure 4 This is a flow chart of an embodiment of a sewage detection method of the present invention;

[0041] Figure 5 for Figure 4 A detailed flow chart of step S10 of Example 2;

[0042] Figure 6 for Figure 5 A detailed flow diagram of step S20 of Example 2;

[0043] Figure 7 for Figure 6 A detailed flow chart of step S21 of Example 2;

[0044] Figure 8 for Figure 6 A detailed flow diagram of step S22 of Example 2;

[0045] Figure 9 for Figure 6 Detailed flow chart of step S23 of Example 2.

[0046] Description of Figure Numbers:

[0047] Label name Label name 100 Sewage detection system 10 sewage tank 11 Fixed structure 30 Transmitter module 70 Receiver Module 71 Near-end receiver 73 Remote receiver

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] To better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0050] Existing sewage detection methods set up two electrodes on both sides of the sewage tank of the sewage detection system. By measuring the current intensity generated between the two electrodes, the conductivity of the water to be tested contained in the sewage tank is analyzed to determine the state of the water. However, the electrodes are easily corroded by sewage and rusted, which affects the intensity of the generated current and further leads to inaccurate measurement results. In addition, the detection accuracy of using the conductivity of the medium between the electrodes as a monitoring indicator is low, and the specific state of the water in the sewage tank cannot be accurately distinguished.

[0051] To address the aforementioned drawbacks, embodiments of the present invention provide a sewage detection method and system. The sewage detection method primarily employs the following technical solution: a transmitting module transmits a photoelectric signal that penetrates the sidewalls of a sewage tank and at least partially reaches a storage space formed within the tank. The photoelectric signal is then reflected by the sidewalls and / or the water body to be tested within the storage space to a receiving module. The receiving module then determines the photoelectric signal received by the receiving module to obtain a water body status result. In this manner, the specific state of the water body to be tested can be determined by determining the path of the photoelectric signal propagating through the water body before and after reflection from the sidewalls and / or the water body to be tested within the storage space, as well as the change in signal strength, thereby improving the detection accuracy of the water body to be tested.

[0052] The embodiment of the present application provides a sewage detection system 100 .

[0053] like Figure 1 and Figure 2 As shown, Figure 1 1 is a schematic structural diagram of an embodiment of a sewage detection system 100 according to an embodiment of the present invention. Figure 2 for Figure 1 A partial cross-sectional schematic diagram of an embodiment in FIG.

[0054] The sewage detection system 100 includes a sewage tank 10 , a transmitter module 30 disposed on an outer wall of the sewage tank 10 , and a receiver module 70 disposed on one side of the transmitter module 30 .

[0055] Those skilled in the art will understand that Figure 1 and Figure 2 The structure of the sewage detection system 100 shown in the figure does not constitute a limitation to the sewage detection system 100, and the sewage detection system 100 may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0056] exist Figure 1 and Figure 2 In the sewage detection system 100 shown in FIG, the sewage detection method used by the system includes the following steps:

[0057] The transmitting module 30 transmits a photoelectric signal that penetrates the side wall of the sewage tank 10 and at least partially reaches the accommodating space formed in the sewage tank. The photoelectric signal is reflected by the side wall of the sewage tank 10 and / or the water body to be measured set in the accommodating space to the receiving module 70;

[0058] The photoelectric signal received by the receiving module 70 is judged to obtain the water state result.

[0059] In some embodiments, the receiving module 70 includes a proximal receiving element 71 and a distal receiving element 73, and the photoelectric signal includes a proximal signal and a distal signal. The transmitting module 30 transmits the photoelectric signal through the side wall of the sewage tank 10 and at least partially reaches the accommodating space formed in the sewage tank. The photoelectric signal is reflected by the side wall of the sewage tank 10 and / or the water body to be measured set in the accommodating space to the receiving module 70, and the steps specifically include:

[0060] The near-end signal transmitted by the transmitting module 30 penetrates the side wall of the sewage tank 10 and at least partially reaches the water body to be measured in the accommodating space formed in the sewage tank, and is reflected to the near-end receiving element 71;

[0061] The transmitting module 30 transmits a remote signal which penetrates the side wall of the sewage tank 10 and at least partially reaches the water body to be detected disposed in the accommodating space formed in the sewage tank and is reflected to the remote receiving element 73 .

[0062] In some embodiments, the above step of determining the photoelectric signal received by the receiving module 70 to obtain the water state result specifically includes:

[0063] Judging the proximal signal received by the proximal receiving element 71 to obtain a proximal judgment result;

[0064] Judging the remote signal received by the remote receiving element 73 to obtain a remote judgment result;

[0065] The water status result is obtained by judging based on the proximal judgment result and the distal judgment result.

[0066] In some embodiments, the step of determining the proximal signal received by the proximal receiving element 71 to obtain the proximal determination result specifically includes:

[0067] Converting the received near-end signal into a near-end digital signal;

[0068] The near-end digital signal strength is compared with the near-end preset value to obtain a near-end judgment result.

[0069] In some embodiments, the above-mentioned step of judging the remote signal received by the remote receiving element 73 and obtaining the remote judgment result specifically includes:

[0070] Convert the received remote signal into a remote digital signal;

[0071] Compare the remote digital signal strength with the remote preset value to obtain the remote judgment result.

[0072] In some embodiments, the above step of determining the water state based on the proximal judgment result and the distal judgment result includes:

[0073] If the near-end judgment result is a near-end strong signal and the far-end judgment result is a far-end strong signal, the water state result is a foam state;

[0074] If the near-end judgment result is a strong near-end signal and the far-end judgment result is a weak far-end signal, the water body state result is a no-water state;

[0075] If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end strong signal, the water body state result is a sewage state;

[0076] If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end weak signal, the water state result is a clear water state.

[0077] Reference Figure 3 A first embodiment of the present invention provides a sewage detection method, the sewage detection method comprising:

[0078] Step S10: The transmitting module 30 transmits a photoelectric signal that penetrates the side wall of the sewage tank 10 and at least partially reaches the accommodating space formed in the sewage tank 10. The photoelectric signal is reflected by the side wall of the sewage tank 10 and / or the water to be measured set in the accommodating space to the receiving module 70.

[0079] Step S20: judging the photoelectric signal received by the receiving module 70 to obtain the water state result.

[0080] In this embodiment, the transmitter module 30 is pre-controlled to emit a corresponding preset photoelectric signal toward the side wall of the sewage tank 10. The transmitter module 30 is a device that converts electrical energy into light energy and can be a light-emitting diode, an infrared light source, or an LED digital tube, which is not specifically limited in this application. The transmitter module 30 deflects the light signal it transmits toward it and reflects it to the receiver module 70, allowing the receiver module 70 to receive the light signal.

[0081] Specifically, the receiving module 70 has a photosensitive property. When it is irradiated with light of a certain wavelength, its resistivity changes significantly based on the photosensitive properties of the semiconductor material, thereby changing the intensity of the electrical signal converted from the optical signal. The receiving module 70 can be a photoelectric receiving device constructed using a photoresistor, a photodiode, or a phototransistor, etc., which is not specifically limited in this application. By determining the signal intensity of the electrical signal converted from the optical signal received by the receiving module 70, the propagation path of the optical signal in the water body to be tested can be determined when the optical signal enters the water body to be tested and is reflected by the side wall of the sewage tank 10 and / or the water body to be tested disposed within the accommodating space. The specific state of the water body to be tested can be determined, thereby further improving the detection accuracy of the water body to be tested.

[0082] In certain embodiments, reference Figure 1 and Figure 2 The second embodiment of the present invention provides a sewage detection system 100. In the sewage detection system 100, the receiving module 70 includes a near-end receiving element 71 and a far-end receiving element 73, and the photoelectric signal includes a near-end signal and a far-end signal. Figure 4 The second embodiment of the present invention also provides a sewage detection method based on the above Figure 3 In the embodiment shown, the sewage detection method specifically includes the following steps in step S10:

[0083] Step S11: The transmitting module 30 transmits a near-end signal, which is reflected by the side wall of the sewage tank 10 and / or the water body to be measured disposed in the accommodating space formed by the sewage tank 10 to the near-end receiving element 71;

[0084] In step S12 , the transmitting module 30 transmits a remote signal, which is reflected by the side wall of the sewage tank 10 and / or the water body to be measured disposed in the accommodating space formed by the sewage tank 10 to the remote receiving element 73 .

[0085] It will be appreciated that optical signals reflected by the sidewalls of the sewage tank 10 and / or the water to be tested within the accommodating space formed by the sewage tank 10 follow different refraction paths depending on the state of the water to be tested. To prevent the optical signals reflected by the water to be tested within the sidewalls of the sewage tank 10 and / or the accommodating space formed by the sewage tank 10 from exceeding the receiving area of ​​the receiving module 70 for receiving optical signals, a proximal receiving element 71 and a distal receiving element 73 are positioned at different positions relative to the transmitting module 30 to respectively receive optical signals reflected by the sidewalls of the sewage tank 10 and / or the water to be tested within the accommodating space. This arrangement ensures the accuracy of optical signal reception at the corresponding location while also increasing the area within which the receiving module 70 can receive optical signals.

[0086] It should be noted that the beam-shaped optical signal emitted by the transmitting module 30 will diffuse horizontally in the vertical direction during transmission. The diffusion diameter depends on factors such as water quality, wavelength, transmission distance, and underwater divergence angle. After corresponding diffusion, the optical signal reflected by the sidewalls of the sewage tank 10 and / or the water body to be tested within the accommodating space formed by the sewage tank 10 has the potential to be received simultaneously by the near-end receiver 71 and the far-end receiver 73. By distinguishing the signal strength or reception time of the optical signal when the near-end receiver 71 and the far-end receiver 73 receive them, the specific state of the water body to be tested in the sewage tank 10 can be determined. This configuration further improves the accuracy of water body detection.

[0087] In certain embodiments, reference Figure 5 The third embodiment of the present invention provides a sewage detection method based on the above Figure 4 In the embodiment shown, the sewage detection method specifically includes the following steps in step S20:

[0088] Step S21, judging the near-end signal received by the near-end receiving element 71 to obtain a near-end judgment result;

[0089] Step S22, judging the remote signal received by the remote receiving element 73 to obtain a remote judgment result;

[0090] Step S23: Perform judgment based on the near-end judgment result and the far-end judgment result to obtain the water body state result.

[0091] It is understood that the signal received by the near-end receiving element 71 is defined as the near-end signal, and the signal received by the far-end receiving element 73 is defined as the far-end signal. There are various ways to determine the near-end and far-end signals. For example, a illuminance meter or sensor may be used to obtain a target parameter value for at least one of the following parameters: light intensity, luminous flux, or illuminance of the near-end and far-end signals, and then compare the target parameter value with a preset parameter value to obtain a corresponding determination result. Alternatively, the optical signal may be converted into a digital signal, and then a target parameter value for at least one of the following parameters: amplitude, time, average value, or root mean square value may be obtained, and then compared with a preset parameter value to obtain a corresponding determination result.

[0092] It is understood that the near-end judgment result only determines the actual state of the signal reflected by the sidewalls of the sewage tank 10 and / or the water body to be tested within the accommodating space formed by the sewage tank 10 within the detection area of ​​the near-end receiver 71; the far-end judgment result only determines the actual state of the signal reflected by the sidewalls of the sewage tank 10 and / or the water body to be tested within the accommodating space formed by the sewage tank 10 within the detection area of ​​the far-end receiver 73. After obtaining the near-end judgment result and the far-end judgment result, they need to be combined to further confirm that the actual range of the signal emitted by the transmitting module 30, after reflection and scattering, falls within the detection area of ​​the near-end receiver 71 and the detection area of ​​the far-end receiver 73, thereby deriving a specific judgment result of the water body state. This configuration further increases the accuracy of water body detection in the present sewage detection system 100.

[0093] In certain embodiments, reference Figure 6 The fourth embodiment of the present invention provides a sewage detection method based on the above Figure 5 In the embodiment shown, the sewage detection method in the above step S21 specifically includes:

[0094] Step S211, converting the received near-end signal into a near-end digital signal;

[0095] Step S212 , comparing the near-end digital signal strength with a near-end preset value to obtain a near-end determination result.

[0096] In certain embodiments, reference Figure 7 The fifth embodiment of the present invention provides a sewage detection method based on the above Figure 5 In the embodiment shown, the sewage detection method in the above step S22 specifically includes:

[0097] Step S221, converting the received remote signal into a remote digital signal;

[0098] Step S222 , comparing the remote digital signal strength with a remote preset value to obtain a remote determination result.

[0099] It is understood that by providing a semiconductor with photosensitive properties so that when it is irradiated with light of a certain wavelength, its resistivity changes and the optical signal is converted into a corresponding digital signal. The digital signal has a high degree of anti-interference during transmission. When bit errors occur due to interference signals, they can be detected and corrected by using certain encoding techniques, further improving the stability of the signal reception and transmission processing process. On the other hand, the converted digital signal can be compressed to occupy less bandwidth and can be directly used for computer processing after transmission, further facilitating the subsequent processing and judgment of the data and improving the processing efficiency of the water body detection in the sewage detection system 100.

[0100] It is understood that the near-end preset value and the far-end preset value can be preset parameter values ​​corresponding to at least one of the parameters such as amplitude, time, average value, and root mean square value. They can be a specific value, a range of values, or a curve formed by a series of values. By comparing the parameter value of the acquired digital signal with the preset value, the judgment result obtained is more accurate than a single value obtained by the strength of the conductive performance of the electrode member. Such a setting further improves the accuracy of the detection of water bodies in the sewage detection system 100.

[0101] In certain embodiments, reference Figure 8 The sixth embodiment of the present invention provides a sewage detection method based on the above Figure 5 In the embodiment shown, the sewage detection method specifically includes in the above step S23:

[0102] Step S231: If the near-end judgment result is a near-end strong signal and the far-end judgment result is a far-end strong signal, the water state result is obtained as a foam state;

[0103] Step S232: If the near-end judgment result is a strong near-end signal and the far-end judgment result is a weak far-end signal, the water body state result is obtained as no water state;

[0104] Step S233: If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end strong signal, the water body state result is obtained as sewage state;

[0105] In step S234, if the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end weak signal, the water state result is a clear water state.

[0106] Optionally, depending on the different refraction and reflection paths of light in air, clean water, sewage, and when encountering bubbles, the signal strength values ​​received by the near-end receiving element 71 and the far-end receiving element 73 vary significantly. The following lists the process of obtaining water status results under four different water conditions:

[0107] 1) Acquisition Process 1: The transmitting module 30 emits a light signal toward the side wall of the sewage tank 10 and / or the water body to be measured set in the accommodating space formed by the sewage tank 10. When the light signal is emitted into the sewage tank 10 by the transparent side wall of the sewage tank 10, it is reflected and refracted at the intersection. Because the intersection is close to the transmitting element, most of the reflected light signal will be received by the proximal receiving element 71 close to the transmitting module 30. The refracted light signal deviates from the incident angle and is not received by the water body to be measured set in the accommodating space. The far-end receiving element 73 hardly receives the reflected light signal. At this time, the near-end judgment result is a near-end strong signal, and the far-end judgment result is a far-end weak signal. The sewage tank 10 contains air, and the water body state result is a waterless state.

[0108] 2) Acquisition process II: The transmitting module 30 emits a light signal toward the side wall of the sewage tank 10 and / or the water body to be tested set in the accommodating space formed by the sewage tank 10. When the light signal is emitted into the sewage tank 10 by the transparent medium wall of the sewage tank 10, almost no reflection occurs at the junction thereof, and refraction still exists. The near-end receiving element 71 hardly receives the reflected light signal, and the refracted light signal also deviates from the incident angle and is hardly reflected by the water body to be tested set in the accommodating space. The far-end receiving element 73 also hardly receives the reflected light signal. At this time, the near-end judgment result is a near-end weak signal, and the far-end judgment result is a far-end weak signal. There is clean water with a high refractive index and a low reflectivity in the sewage tank 10, and the water state result is clean water. It should be noted that when the level of sewage is relatively low, its refractive index and reflectivity for light can be approximately equivalent to those of clean water.

[0109] 3) Acquisition process three: The transmitting module 30 emits a light signal toward the side wall of the sewage tank 10 and / or the water body to be tested set in the accommodating space formed by the sewage tank 10. When the light signal is emitted into the sewage tank 10 through the transparent medium side wall of the sewage tank 10, it is refracted at the intersection thereof, and reflection almost does not occur. The near-end receiving element 71 hardly receives the reflected light signal. The refracted light signal is reflected by the water body to be tested set in the accommodating space according to a preset refraction angle and is received by the far-end receiving element 73. At this time, the near-end judgment result is a near-end weak signal, and the far-end judgment result is a far-end strong signal. The sewage tank 10 contains sewage with a refractive index greater than that of air but a very low reflectivity, and the water body state result is sewage.

[0110] 4) Acquisition Process IV: The transmitting module 30 emits a light signal toward the side wall of the sewage tank 10 and / or the water body to be tested set in the accommodating space formed by the sewage tank 10. When the light signal is emitted into the sewage tank 10 by the transparent medium wall of the sewage tank 10, it is reflected and refracted at the intersection. After refraction, the near-end signal passes through the surface of the bubble generated in the water body, and is reflected again on its surface and received by the near-end receiving element 71. The refracted light signal is reflected by the water body to be tested set in the accommodating space according to a preset refraction angle and is received by the far-end receiving element 73. At this time, the near-end judgment result is a near-end strong signal, and the far-end judgment result is a far-end strong signal. The sewage tank 10 contains sewage with foam, and the water state result is a foam state.

[0111] The above four acquisition states are used to further distinguish the states of the water contained in the sewage tank 10 , thereby further improving the accuracy of the water detection performed by the sewage detection system 100 .

[0112] In one embodiment of the present invention, the sewage treatment system includes a sewage tank 10, a transmitter module 30, and a receiver module 70. A light-transmitting fixed structure 11 is protruding from the outer wall of the sewage tank 10; the transmitter module 30 is fixedly mounted on the fixed structure 11 and is used to transmit photoelectric signals; the receiver module 70 is mounted on the fixed structure 11 and is arranged on one side of the transmitter module 30, and is used to receive photoelectric signals. The sewage detection method used in the system includes the following steps:

[0113] The transmitting module 30 transmits a photoelectric signal to the side wall of the sewage tank 10 and / or the water body to be tested set in the accommodating space formed by the sewage tank 10. The photoelectric signal is reflected by the side wall of the sewage tank 10 and / or the water body to be tested set in the accommodating space formed by the sewage tank 10 to the receiving module 70.

[0114] The photoelectric signal received by the receiving module 70 is judged to obtain the water state result.

[0115] Optionally, the receiving module 70 includes at least two receiving elements, wherein the two receiving elements extend from the fixed structure 11 toward the accommodating space with a height difference. The receiving element with the lower extension height is defined as the proximal receiving element 71, and the other receiving element is defined as the distal receiving element 73. The distal receiving element 73 and the transmitting module 30 are provided on both sides of the proximal receiving element 71. In this embodiment, the steps of judging the photoelectric signal received by the receiving module 70 and obtaining the water state result are specifically as follows:

[0116] The transmitting module 30 transmits a near-end signal which is reflected by the side wall of the sewage tank 10 and / or the water body to be measured disposed in the accommodating space formed by the sewage tank 10 to the near-end receiving element 71;

[0117] The transmitting module 30 transmits a remote signal, which is reflected by the side wall of the sewage tank 10 and / or the water body to be measured disposed in the accommodating space formed by the sewage tank 10 to the remote receiving element 73 .

[0118] It can be understood that by providing the proximal receiving element 71 and the distal receiving element 73, the specific state of the water body to be detected in the sewage tank 10 can be determined by distinguishing the difference in signal strength or the difference in reception time when the proximal receiving element 71 and the distal receiving element 73 receive the optical signal respectively. This arrangement further increases the detection accuracy of the water body detection.

[0119] Optionally, the transmitting module 30 is a light emitting diode; and / or the receiving element is a photosensitive receiver.

[0120] It should be noted that photodiodes are a commonly used light-emitting device that emits light by releasing energy through the combination of electrons and holes. They have the advantages of simple structure and low energy consumption. The use of light-emitting diodes as the transmitting module 30 further reduces the manufacturing cost of the sewage detection system 100 and increases the working stability of the sewage detection system 100.

[0121] It should be noted that the photosensitive receiver receives the light signal and converts it into a current or voltage signal. It has the advantages of simple structure, stable operation and low energy consumption. The application of the photosensitive receiver as the receiving module 70 further reduces the manufacturing cost of the sewage detection system 100 and increases the working stability of the sewage detection system 100.

[0122] Optionally, the sewage detection system 100 includes at least two transmitting modules 30 and at least two receiving modules, and the at least two transmitting modules 30 are arranged at intervals along the height direction of the sewage tank 10; the number of receiving modules 70 corresponds to the number of transmitting modules 30.

[0123] It is understood that when liquid is contained in the sewage tank 10, the liquid surface always forms a plane under the influence of gravity. Corresponding to this plane, at least two transmitting modules 30 and corresponding at least two receiving modules 70 are arranged at intervals along the height direction. By further comparing the water status results obtained by the two sets of transmitting modules 30 and receiving modules 70, misjudgment of the water status results due to liquid sloshing or wave-like fluctuations in the liquid surface is avoided. This arrangement further enhances the operational stability of the sewage detection system 100.

[0124] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0125] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0126] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0127] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0128] It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claim. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third etc. does not indicate any order. These words may be interpreted as names.

[0129] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0130] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A sewage detection method, characterized in that: The method is performed through a sewage detection system, which includes a sewage tank, a transmitter module provided on the outer wall of the sewage tank, and a receiver module provided on one side of the transmitter module. The method comprises the following steps: S10: The transmitting module transmits a photoelectric signal that penetrates the side wall of the sewage tank and at least partially reaches the accommodating space formed in the sewage tank, and the photoelectric signal is reflected by the side wall of the sewage tank and / or the water body to be measured set in the accommodating space to the receiving module; S20: judging the photoelectric signal received by the receiving module to obtain a water state result; The receiving module includes a proximal receiving element and a distal receiving element. The proximal receiving element and the distal receiving element extend toward the accommodating space at a height difference. The receiving element with the lower extension height is defined as the proximal receiving element, and the other receiving element is defined as the distal receiving element. The distal receiving element and the transmitting module are provided on both sides of the proximal receiving element. The photoelectric signal includes a proximal signal and a distal signal. Step S10 includes: S11: The transmitting module transmits a near-end signal, which is reflected by the side wall of the sewage tank and / or the water body to be measured disposed in the accommodating space formed by the sewage tank to the near-end receiving element; S12: The transmitting module transmits a remote signal, which is reflected by the water body to be measured in the accommodating space formed by the sewage tank to the remote receiving component.

2. The sewage detection method according to claim 1, wherein: The step S20 includes: S21: judging the proximal signal received by the proximal receiving component to obtain a proximal judgment result; S22: judging the remote signal received by the remote receiving component to obtain a remote judgment result; S23: Perform judgment based on the proximal judgment result and the distal judgment result to obtain the water body status result.

3. The sewage detection method according to claim 2, wherein: The step S21 includes: S211: Converting the received near-end signal into a near-end digital signal; S212: Compare the near-end digital signal strength with a near-end preset value to obtain a near-end judgment result.

4. The sewage detection method according to claim 2, wherein: The step S22 includes: S221: Converting the received remote signal into a remote digital signal; S222: Compare the remote digital signal strength with the remote preset value to obtain a remote judgment result.

5. The sewage detection method according to claim 2, wherein: The step S23 includes: S231: If the near-end judgment result is a near-end strong signal and the far-end judgment result is a far-end strong signal, the water state result is obtained as a foam state; S232: If the near-end judgment result is a strong near-end signal and the far-end judgment result is a weak far-end signal, the water body state result is obtained as no water state; S233: If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end strong signal, the water body state result is obtained as sewage state; S234: If the near-end judgment result is a near-end weak signal and the far-end judgment result is a far-end weak signal, the water body state result is a clear water state.

6. A sewage detection system, used in the sewage detection method according to any one of claims 1 to 5, characterized in that: The sewage detection system comprises: A sewage tank, wherein the outer wall of the sewage tank is provided with a light-transmitting fixed structure; a transmitting module, the transmitting module being fixedly mounted on the fixed structure and configured to transmit a photoelectric signal; and A receiving module, the receiving module being mounted on the fixed structure and disposed opposite to one side of the transmitting module, and being used to receive photoelectric signals; The receiving module includes at least two receiving parts, wherein the two receiving parts extend from the fixed structure toward the accommodating space with a height difference. The receiving part with the lower extension height is defined as the proximal receiving part, and the other receiving part is defined as the distal receiving part. The distal receiving part and the transmitting module are arranged on both sides of the proximal receiving part.

7. The sewage detection system according to claim 6, characterized in that: The transmitting module is a light emitting diode; And / or, the receiving element is a photosensitive receiver.

8. The sewage detection system according to claim 6, characterized in that: The sewage detection system comprises: At least two transmitting modules, the at least two transmitting modules are arranged at intervals along the height direction of the sewage tank; and At least two receiving modules, the number of the receiving modules corresponds to the number of the transmitting modules.

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