Ultrasonic cleaning equipment leakage diagnosis method and system based on temperature and humidity sensing

Abstract

The invention relates to the technical field of ultrasonic cleaning equipment leakage diagnosis, in particular to an ultrasonic cleaning equipment leakage diagnosis method and system based on temperature and humidity sensing, and the system comprises ultrasonic cleaning equipment, a temperature and humidity sensor group and an MCU microcontroller. A temperature and humidity sensor group is arranged on the ultrasonic cleaning equipment to sense temperature and humidity changes, and the equivalent leakage amount corresponding to each temperature and humidity sensor is calculated based on temperature signals and humidity signals output by the temperature and humidity sensors; the equivalent leakage amount is corrected, and a corrected leakage amount estimation value is obtained; and fusing all the corrected leakage estimated values to obtain an average leakage representing the leakage condition of the ultrasonic cleaning equipment, and performing leakage diagnosis according to a preset leakage threshold. According to the invention, leakage diagnosis can be carried out on the ultrasonic cleaning equipment, and leakage conditions can be graded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultrasonic cleaning equipment leakage diagnosis, and particularly relates to an ultrasonic cleaning equipment leakage diagnosis method and system based on temperature and humidity sensing. BACKGROUND

[0002] The ultrasonic cleaning equipment is widely used in medical and other industries, and its cleaning effect is crucial to reducing the risk of cross infection and ensuring patient safety. During long-term operation of the equipment, leakage caused by factors such as aging of sealing parts and loosening of pipeline connections seriously affects the electrical lines and control units in the equipment, and further affects the cleaning effect, causing cross infection or medical accidents. Long-term leakage will gradually corrode electrical components, control units and display units, and further damage the equipment.

[0003] Leakage and leakage both mean that liquid leakage occurs in the pipeline. Generally, leakage will cause relatively large changes in the flow signal or pressure signal of the pipeline, and the leakage can be diagnosed by detecting the flow signal or pressure signal and extracting the corresponding features. Leakage generally does not cause obvious changes in the flow or pressure of the pipeline, and existing flow sensors are difficult to detect changes in the flow of the pipeline caused by leakage, and existing pressure sensors are also difficult to detect changes in the pressure of the pipeline caused by leakage. Therefore, it is difficult to diagnose leakage based on flow signals or pressure signals, and existing diagnostic methods cannot diagnose ultrasonic cleaning equipment leakage. SUMMARY

[0004] The present application relates to the technical field of ultrasonic cleaning equipment leakage diagnosis, and particularly relates to an ultrasonic cleaning equipment leakage diagnosis method and system based on temperature and humidity sensing.

[0005] To achieve the above-mentioned purpose, in a first aspect, the present application provides an ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing, comprising an ultrasonic cleaning equipment, a temperature and humidity sensor group and an MCU microcontroller, the temperature and humidity sensor group comprising a temperature and humidity sensor arranged at a pipeline connection head of a horizontal pipeline of the ultrasonic cleaning equipment and below the horizontal pipeline close to a side edge of the pipeline connection head, for sensing the temperature and humidity at the pipeline connection head of the horizontal pipeline of the ultrasonic cleaning equipment; The temperature and humidity sensor group further comprises a temperature and humidity sensor arranged at a pipeline connection head of a vertical pipeline of the ultrasonic cleaning equipment and at a side edge of the vertical pipeline close to an underside of the pipeline connection head, for sensing the temperature and humidity at the pipeline connection head of the vertical pipeline of the ultrasonic cleaning equipment; The temperature and humidity sensor group further comprises a temperature and humidity sensor arranged inside the ultrasonic cleaning equipment, for sensing the temperature and humidity of the internal environment of the ultrasonic cleaning equipment; The MCU microcontroller is electrically connected with the temperature and humidity sensor group.

[0006] The ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing further includes a power supply, buttons, a display unit, and a communication interface; the power supply is electrically connected to the MCU microcontroller, the buttons are electrically connected to the MCU microcontroller, the display unit is electrically connected to the MCU microcontroller, and the communication interface is electrically connected to the MCU microcontroller.

[0007] Secondly, the present invention also provides a method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing, comprising: A temperature and humidity sensor group is arranged on the ultrasonic cleaning equipment. The temperature and humidity sensor group includes m+1 temperature and humidity sensors, of which m temperature and humidity sensors are used to sense the temperature and humidity changes at m leakage points of the ultrasonic cleaning equipment, and 1 temperature and humidity sensor is used to sense the temperature and humidity changes inside the ultrasonic cleaning equipment. Based on the temperature and humidity signals output by the temperature and humidity sensors, calculate the equivalent leakage amount corresponding to each temperature and humidity sensor. The equivalent leakage rate is corrected to obtain the corrected leakage rate estimate. By integrating all the corrected leakage estimates, an average leakage rate characterizing the leakage of the ultrasonic cleaning equipment is obtained, and leakage diagnosis is performed based on a preset leakage threshold.

[0008] In the step of calculating the equivalent leakage amount corresponding to each temperature and humidity sensor based on the temperature and humidity signals output by the temperature and humidity sensors, the first... Equivalent leakage of a temperature and humidity sensor The calculation expression is: (1) (2) In equations (1) and (2), , It is the first Temperature change measured by a temperature and humidity sensor It is the first The relative humidity change of each temperature and humidity sensor It's the leakage rate. It is the average thickness of the thin liquid film formed on the surface of the pipe due to liquid leakage; It is the surface area of ​​the internal space of the equipment cabinet. It refers to the volume of the internal space of the equipment cabinet. It is the convective heat transfer coefficient. It is the mass transfer coefficient. It is the saturated steam concentration. It refers to the concentration of ambient steam. It is the latent heat of vaporization. It is the ventilation coefficient.

[0009] The equivalent leakage rate is corrected to obtain the corrected leakage rate estimate, which includes: The expression (1) is calculated As initial values, then... Make corrections to obtain the corresponding estimated leakage amount. The corrected formula is as follows: (3) Equation (3) is the corrected leakage calculation model, where, , and For undetermined coefficients, This is a time series of the temperature signal output from the first temperature and humidity sensor. The length of the time series is determined based on the modeling requirements. This is the time series of humidity signals output by the first temperature and humidity sensor.

[0010] The step of integrating all corrected leakage estimates to obtain the average leakage amount characterizing the leakage situation of the ultrasonic cleaning equipment is expressed as follows: (4) In equation (4) ( ) is an adjustable coefficient.

[0011] In the step of diagnosing leakage based on a preset leakage threshold, the method for judging the leakage diagnosis result is as follows: like If it is clear, it means there is no leakage; if If it is 0, it indicates a minor leak; if If it is 0, it indicates moderate leakage; if This indicates a serious leak, among which, , and This is a preset threshold.

[0012] This invention discloses a method and system for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing. A temperature and humidity sensor group is arranged on the ultrasonic cleaning equipment, comprising m+1 temperature and humidity sensors. m sensors sense temperature and humidity changes at m leakage points within the ultrasonic cleaning equipment, and one sensor senses changes in the internal ambient temperature and humidity. Based on the temperature and humidity signals output by the sensors, the equivalent leakage amount corresponding to each sensor is calculated. The equivalent leakage amount is corrected to obtain a corrected leakage amount estimate. All corrected leakage amount estimates are fused to obtain an average leakage amount characterizing the leakage situation of the ultrasonic cleaning equipment, and leakage diagnosis is performed according to a preset leakage amount threshold. This invention can diagnose leakage in ultrasonic cleaning equipment and classify leakage situations, solving the problem that existing methods based on pipeline flow signal detection or pipeline pressure signal detection cannot diagnose leakage in ultrasonic cleaning equipment online. Furthermore, it solves the problem that changes in pipeline flow signal or pipeline pressure signal caused by leakage cannot be detected using existing technologies, thus preventing the classification of leakage situations. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is an example of the ultrasonic cleaning equipment composition and a schematic diagram of the temperature and humidity sensor layout of an ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing, which is an embodiment of the present invention.

[0015] Figure 2 This is a hardware block diagram of the ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing of the present invention.

[0016] Figure 3 This is a flowchart of the control program for the leakage diagnosis system of ultrasonic cleaning equipment based on temperature and humidity sensing, according to the present invention.

[0017] Figure 4 This is a schematic diagram of the overall structure of the ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing of the present invention.

[0018] Figure 5 This is a flowchart of the ultrasonic cleaning equipment leakage diagnosis method based on temperature and humidity sensing of the present invention.

[0019] 1-Ultrasonic generator and control system; 21-Ultrasonic transducer; 22-Ultrasonic transducer; 23-Ultrasonic transducer; 24-Ultrasonic transducer; 31-Cleaning tank; 32-Cleaning tank; 4-Water inlet pipe; 5-Drainage pipe; 6-Equipment cabinet; 71-Pipe connector; 72-Pipe connector; 73-Pipe connector; 74-Pipe connector; 75-Pipe connector; 76-Pipe connector; 77-Pipe connector; 81-Temperature and humidity sensor; 82-Temperature and humidity sensor; 83-Temperature and humidity sensor; 84-Temperature and humidity sensor; 85-Temperature and humidity sensor; 86-Temperature and humidity sensor; 87-Temperature and humidity sensor; 9-Temperature and humidity sensor; 101-Ultrasonic cleaning equipment; 102-Temperature and humidity sensor group; 103-MCU microcontroller; 104-Power supply; 105-Buttons; 106-Display unit; 107-Communication interface. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Firstly, please refer to Figures 1-4 The present invention provides a leakage diagnosis system for ultrasonic cleaning equipment based on temperature and humidity sensing, including ultrasonic cleaning equipment 101, temperature and humidity sensor group 102, MCU microcontroller 103, power supply 104, button 105, display unit 106 and communication interface 107. The above solution can perform leakage diagnosis on ultrasonic cleaning equipment 101.

[0022] In this specific embodiment, the temperature and humidity sensor group 102 includes a temperature and humidity sensor disposed at the pipe connector of the transverse pipe of the ultrasonic cleaning device 101 and located below the transverse pipe near the side of the pipe connector, for sensing the temperature and humidity at the pipe connector of the transverse pipe of the ultrasonic cleaning device 101. The temperature and humidity sensor group 102 also includes a temperature and humidity sensor disposed at the pipe connector of the vertical pipe of the ultrasonic cleaning equipment 101 and located on the side of the vertical pipe near the lower side of the pipe connector, for sensing the temperature and humidity at the pipe connector of the vertical pipe of the ultrasonic cleaning equipment 101. The temperature and humidity sensor group 102 also includes a temperature and humidity sensor disposed inside the ultrasonic cleaning equipment 101 for sensing the temperature and humidity of the internal environment of the ultrasonic cleaning equipment 101. The MCU microcontroller 103 is electrically connected to the temperature and humidity sensor group 102.

[0023] The power supply 104 is electrically connected to the MCU microcontroller 103, the button 105 is electrically connected to the MCU microcontroller 103, the display unit 106 is electrically connected to the MCU microcontroller 103, and the communication interface 107 is electrically connected to the MCU microcontroller 103.

[0024] The working principle of the ultrasonic cleaning equipment 101 leakage diagnosis system based on temperature and humidity sensing of the present invention will now be explained by an embodiment.

[0025] An ultrasonic cleaning system 101 typically consists of an ultrasonic transducer, an ultrasonic generator, a control system, a cleaning tank, an inlet water pipe, an outlet water pipe, and switching valves. Taking two cleaning tanks as an example, its configuration is generally as follows: Figure 1 As shown, the system mainly consists of an ultrasonic generator and control system 1, ultrasonic transducers 21-24, cleaning tanks 31-32, an inlet water pipe 4, and a drain water pipe 5, all of which are installed inside the equipment cabinet 6. The connection between the inlet water pipe and the cleaning tank, the connection between the cleaning tank and the drain water pipe, and the connection between pipes are generally achieved through pipe connectors 71-77. Pipe connections are the source of leakage, and temperature and humidity sensors need to be placed at all pipe connections. When leakage occurs at the pipe connections of horizontal pipes, the temperature and humidity changes (especially those caused by long-term cumulative effects) are relatively significant below the left or right side of the pipe near the pipe connector. Therefore, for horizontal pipes, temperature and humidity sensors 81-85 are placed below the left or right side of the pipe near the pipe connector. When leakage occurs at the pipe joints of vertical pipelines, the temperature and humidity changes (especially those caused by long-term cumulative effects) are relatively significant on the lower left or right side of the pipe near the joint. Therefore, for vertical pipelines, temperature and humidity sensors 86-87 are placed on the lower left or right side of the pipe near the joint. Additionally, one temperature and humidity sensor 9 is placed at an appropriate location inside the equipment to sense the internal ambient temperature and humidity, which is considered a factor in leakage diagnosis. Figure 1 The ultrasonic cleaning device 101 shown has 7 leak points, requiring at least 8 temperature and humidity sensors, one of which is used to sense the internal temperature and humidity of the device. Extending this to a general situation, there are... An ultrasonic cleaning device 101 for each leak point needs to be installed at least in the following locations. One temperature and humidity sensor, among which A temperature and humidity sensor is used to sense... Temperature and humidity changes at each leak point, and one sensor for sensing the internal temperature and humidity of the equipment.

[0026] The hardware block diagram of the leakage diagnosis system is as follows: Figure 2As shown, it mainly consists of an MCU microcontroller 103, a temperature and humidity sensor, buttons 105, a display unit 106, and a communication interface 107. Depending on the application, external memory can be added. The temperature and humidity sensor group 102 uses I... 2 C-bus type temperature and humidity sensor, A temperature and humidity sensor is directly connected to the I / O pin of the MCU microcontroller 103. 2 On the C bus. I 2 The C-bus type temperature and humidity sensor directly outputs temperature and humidity signals in digital form, which can be directly read by the MCU microcontroller 103 through running the control program. A temperature and humidity signal.

[0027] The control program flowchart of this system is as follows: Figure 3 As shown, after power-on, the system first executes the initialization program to complete the initialization of parameters such as the leakage calculation model and leakage threshold, the integrated peripherals and I / O interfaces of the MCU microcontroller 103, and to enable the timer interrupt. After the initialization program is completed, the loop program is entered. The loop program mainly executes two parts: the function processing program of button 105 and the model update program. The function processing program of button 105 includes two parts: the parameter setting processing program and the screen switching processing program. The model update program realizes the update of the leakage calculation model, that is, the online update of the coefficients in formula (3). and The model update program also includes two parts: a local update program, where the MCU microcontroller 103 directly executes the built-in model update program to update the leakage calculation model online; and a remote update program, where the MCU microcontroller 103 runs a communication processing program and connects to the host computer via communication interface 107, where the host computer updates the leakage calculation model and then sends it back to the MCU microcontroller 103. During the execution of the loop program, when the timer expires, the main program pauses its original execution and automatically enters the timer interrupt service routine. In the timer interrupt service routine, the I / O pin of the MCU microcontroller 103 is first used to... 2 C interface read Temperature and humidity signals, stored and displayed. Each temperature and humidity signal is used, and then the leakage calculation model is called to calculate the leakage corresponding to each temperature and humidity signal. , , then fusion indivual To obtain an estimate for characterizing the leakage of the ultrasonic cleaning equipment 101. Based on the leakage threshold, the leakage diagnosis results of the ultrasonic cleaning equipment 101 are given. Finally, the diagnosis results are stored and displayed. After the interrupt service routine completes its execution, it returns to the main program, that is, it returns to the point in the main program where it was interrupted and continues execution.

[0028] The specific implementation method of this system is as follows: Step 1: Press Figure 1 The example shown is installed in ultrasonic cleaning equipment 101. Personal I 2 C-bus type temperature and humidity sensor, in which A temperature and humidity sensor is used to sense... Temperature and humidity changes at one leak point, and one sensor for sensing the temperature and humidity changes inside the device.

[0029] Step 2: Press Figure 2 The example shown illustrates the design of a hardware circuit for a leakage diagnosis system of an ultrasonic cleaning device 101, including an MCU microcontroller 103, a power supply 104, buttons 105, a display power supply 104, and a communication interface 107.

[0030] Step 3: Design and process the printed circuit board (PCB), solder and assemble the components to realize the hardware circuit board of the ultrasonic cleaning equipment 101 leakage diagnosis system.

[0031] Step 4: Install the hardware circuit board into the ultrasonic cleaning equipment 101 and connect it. Personal I 2 From the C-type bus temperature and humidity sensor to the hardware circuit board of the 101 ultrasonic cleaning equipment leakage diagnosis system.

[0032] Step 5: Press Figure 3 The control program flowchart shown is used to write the control program for the leakage diagnosis system of ultrasonic cleaning equipment 101, compile and download the executable code to the MCU microcontroller 103 of the ultrasonic cleaning equipment 101 leakage diagnosis system.

[0033] Step 6: Power on and test the system functions. This completes the entire process of implementing the 101 ultrasonic cleaning equipment leakage diagnosis system.

[0034] The ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing of the present invention can diagnose leakage of ultrasonic cleaning equipment 101 and classify the leakage situation. It solves the problem that existing methods based on pipeline flow signal detection or pipeline pressure signal detection cannot diagnose leakage of ultrasonic cleaning equipment 101 online. Furthermore, it solves the problem that the changes in pipeline flow signal or pipeline pressure signal caused by leakage cannot be detected by existing technology, thus making it impossible to classify the leakage situation.

[0035] Secondly, please refer to Figure 5 The present invention also provides a method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing, comprising: S1 arranges a temperature and humidity sensor group 102 on the ultrasonic cleaning equipment 101. The temperature and humidity sensor group 102 includes m+1 temperature and humidity sensors, of which m temperature and humidity sensors are used to sense the temperature and humidity changes at m leakage points of the ultrasonic cleaning equipment 101, and 1 temperature and humidity sensor is used to sense the temperature and humidity changes inside the ultrasonic cleaning equipment 101. S2 calculates the equivalent leakage amount corresponding to each temperature and humidity sensor based on the temperature and humidity signals output by the temperature and humidity sensors. In this step, the first Equivalent leakage of a temperature and humidity sensor The calculation expression is: (1) (2) In equations (1) and (2), , It is the first Temperature change measured by a temperature and humidity sensor It is the first The relative humidity change of each temperature and humidity sensor It's the leakage rate. It is the average thickness of the thin liquid film formed on the surface of the pipe due to liquid leakage; It is the surface area of ​​the internal space of the equipment cabinet. It refers to the volume of the internal space of the equipment cabinet. It is the convective heat transfer coefficient. It is the mass transfer coefficient. It is the saturated steam concentration. It refers to the concentration of ambient steam. It is the latent heat of vaporization. It is the ventilation coefficient.

[0036] S3 corrects the equivalent leakage rate to obtain a corrected leakage rate estimate; including: The expression (1) is calculated As initial values, then... Make corrections to obtain the corresponding estimated leakage amount. The corrected formula is as follows: (3) Equation (3) is the corrected leakage calculation model, where, , and For undetermined coefficients, This is a time series of the temperature signal output from the first temperature and humidity sensor. The length of the time series is determined based on the modeling requirements. This is the time series of humidity signals output by the first temperature and humidity sensor.

[0037] S4 integrates all corrected leakage estimates to obtain the average leakage amount characterizing the leakage situation of the ultrasonic cleaning equipment 101, and performs leakage diagnosis based on the preset leakage threshold.

[0038] In this step, the calculation expression is as follows: (4) In equation (4) ( ) is an adjustable coefficient.

[0039] The diagnostic method for leakage is as follows: like If it is clear, it means there is no leakage; if If it is 0, it indicates a minor leak; if If it is 0, it indicates moderate leakage; if This indicates a serious leak, among which, , and This is a preset threshold.

[0040] To better understand this method, a complete explanation is provided below.

[0041] The model relating leakage to temperature and humidity reflects the relationship between leakage at a certain location of the ultrasonic cleaning equipment 101 and the resulting changes in temperature and humidity signals. The closer the temperature and humidity sensor is to the leakage point, the greater the change in its output temperature and humidity signal; conversely, the farther the temperature and humidity sensor is from the leakage point, the smaller the change in its output temperature and humidity signal.

[0042] When leakage occurs, the liquid seeps into the internal space of the equipment in the form of droplets or liquid films. At the gas-liquid interface, heat and mass transfer occur, satisfying the vapor mass balance equation and the heat balance equation. Assume the ultrasonic cleaning equipment 101 has a total of... There were several leak points, and the layout was... One temperature and humidity sensor, among which A temperature and humidity sensor is used to sense... Temperature and humidity changes at each leak point, and one sensor to monitor temperature and humidity changes inside the equipment. A leak at any one leak point could potentially cause... The signal change of the temperature and humidity sensor. The first... The relative humidity change of each temperature and humidity sensor is marked as follows: The amount of temperature change is denoted as Based on the steam mass balance equation and the heat balance equation, Temperature change of a temperature and humidity sensor and relative humidity change One equivalent leakage volume can be calculated. Its calculation expression is as follows: (1) (2) In equations (1) and (2), , It is the change in temperature (°C). It is the change in relative humidity (%). It is the leakage rate ( ), It is the average thickness of the thin liquid film formed on the surface of the pipe due to liquid leakage. ); It is the surface area of ​​the internal space of the equipment cabinet ( ), It is the volume of the internal space of the equipment cabinet ( ), convective heat transfer coefficient ( ), It is the mass transfer coefficient ( ), It is the saturated steam concentration ( ), It is the concentration of ambient steam ( ), It is the latent heat of vaporization ( ), It is the ventilation coefficient ( ).

[0043] The first can be calculated from either equation (1) or equation (2). Equivalent leakage This is the theoretical basis for leakage diagnosis based on the temperature and humidity changes caused by leakage, and it is also a calculation model for directly calculating leakage flow based on the changes in temperature and humidity signals. Generally, the humidity change caused by leakage is relatively significant, while the temperature change is relatively weak. Therefore, equation (1) is preferred for calculation. .

[0044] Leakage calculated by equation (1) or equation (2) The interaction between temperature and humidity was not taken into account, and , , , , and These parameters are not constant over long periods. When considering the interaction between temperature and humidity, and... , , , , and When the change affects the result, the result calculated by equation (1) should be used first. As initial values, then... Make corrections to obtain the corresponding estimated leakage amount. The correction formula used is as follows: (3) Equation (3) is the corrected leakage calculation model, where, , and These are coefficients to be determined. This is the time series of the temperature signal output by the first temperature and humidity sensor. The length of the time series is determined according to the modeling requirements. This is the time series of the temperature signal output by the second temperature and humidity sensor, and so on. This is the time series of humidity signals output by the first temperature and humidity sensor. This is the time series of humidity signals output by the second temperature and humidity sensor, and so on.

[0045] The undetermined coefficients in equation (3) can be obtained by using machine learning methods for time series data, such as Support Vector Regression (SVR) and Long Short-Term Memory (LSTM) networks. and The value of .

[0046] In the specific operation, given a known leakage rate, temperature and humidity signals are collected from each temperature and humidity sensor for a period of time to obtain... A temperature and humidity signal, Corresponding layout in One temperature and humidity sensor at the leak point and one ambient temperature and humidity sensor located inside the equipment cabinet. The length of the time series. The difference between adjacent values ​​of the first temperature and humidity signal represents the change in temperature and humidity, which is used as... and , The difference between adjacent values ​​of the second temperature and humidity signal is used as... and And so on. The temperature and humidity changes are time-series signals. Using the time-series temperature and humidity changes as input and the leakage rate as output, the coefficient can be obtained by training with machine learning methods specifically designed for time-series data. In practical applications, generally... and It can be made available on the human-machine interface so that operators can further confirm or modify it, or it can be corrected online by running an automatic correction model through a host computer.

[0047] according to One leak point A temperature and humidity sensor, which can be calculated using equation (3). An equivalent leakage rate can also be calculated using equation (3) based on the signal from an ambient temperature and humidity sensor installed inside the equipment cabinet. (Fusion) indivual The average leakage amount, which characterizes the leakage of ultrasonic cleaning equipment 101, can be obtained. Its calculation expression is as follows: (4) In equation (4) ( This is an adjustable coefficient that can be easily adjusted via the human-machine interface. The coefficient can be increased for locations with a high density of leaks, and decreased for less dense areas.

[0048] Estimated by equation (4) With threshold ( , and Based on the logical relationship, the diagnosis result of leakage is given, and the discriminant is as follows: There was no leakage; Slight leakage; Moderate leakage; There is a serious leak.

[0049] threshold , and It can be made available on the human-machine interface, making it easy for operators to make adjustments based on long-term operation.

[0050] The present invention provides a leakage diagnosis method for ultrasonic cleaning equipment based on temperature and humidity sensing. This method can diagnose leakage in ultrasonic cleaning equipment 101 and classify the leakage situation. It solves the problem that existing methods based on pipeline flow signal detection or pipeline pressure signal detection cannot diagnose leakage in ultrasonic cleaning equipment 101 online. Furthermore, it solves the problem that changes in pipeline flow signal or pipeline pressure signal caused by leakage cannot be detected using existing technologies, thus making it impossible to classify the leakage situation.

[0051] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A leakage diagnosis system for ultrasonic cleaning equipment based on temperature and humidity sensing, comprising ultrasonic cleaning equipment, characterized in that, It also includes a temperature and humidity sensor array and an MCU microcontroller; The temperature and humidity sensor group includes a temperature and humidity sensor disposed at the pipe connector of the transverse pipe of the ultrasonic cleaning equipment and located below the transverse pipe near the side of the pipe connector, for sensing the temperature and humidity at the pipe connector of the transverse pipe of the ultrasonic cleaning equipment. The temperature and humidity sensor group also includes a temperature and humidity sensor disposed at the pipe connector of the vertical pipe of the ultrasonic cleaning equipment and located on the side of the vertical pipe near the lower side of the pipe connector, for sensing the temperature and humidity at the pipe connector of the vertical pipe of the ultrasonic cleaning equipment. The temperature and humidity sensor group also includes a temperature and humidity sensor disposed inside the ultrasonic cleaning equipment for sensing the temperature and humidity of the internal environment of the ultrasonic cleaning equipment. The MCU microcontroller is electrically connected to the temperature and humidity sensor group.

2. The ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing as described in claim 1, characterized in that, The ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing also includes a power supply, buttons, a display unit, and a communication interface; the power supply is electrically connected to the MCU microcontroller, the buttons are electrically connected to the MCU microcontroller, the display unit is electrically connected to the MCU microcontroller, and the communication interface is electrically connected to the MCU microcontroller.

3. A method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing, applied to the ultrasonic cleaning equipment leakage diagnosis system based on temperature and humidity sensing as described in any one of claims 1-2, characterized in that, include: A temperature and humidity sensor group is arranged on the ultrasonic cleaning equipment. The temperature and humidity sensor group includes m+1 temperature and humidity sensors, of which m temperature and humidity sensors are used to sense the temperature and humidity changes at m leakage points of the ultrasonic cleaning equipment, and 1 temperature and humidity sensor is used to sense the temperature and humidity changes inside the ultrasonic cleaning equipment. Based on the temperature and humidity signals output by the temperature and humidity sensors, calculate the equivalent leakage amount corresponding to each temperature and humidity sensor. The equivalent leakage rate is corrected to obtain the corrected leakage rate estimate. By integrating all the corrected leakage estimates, an average leakage rate characterizing the leakage of the ultrasonic cleaning equipment is obtained, and leakage diagnosis is performed based on a preset leakage threshold.

4. The method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing as described in claim 3, characterized in that, In the step of calculating the equivalent leakage amount corresponding to each temperature and humidity sensor based on the temperature and humidity signals output by the temperature and humidity sensors, the first... Equivalent leakage of a temperature and humidity sensor The calculation expression is: (1) (2) In equations (1) and (2), , It is the first Temperature change measured by a temperature and humidity sensor It is the first The relative humidity change of each temperature and humidity sensor It's the leakage rate. It is the average thickness of the thin liquid film formed on the surface of the pipe due to liquid leakage; It is the surface area of ​​the internal space of the equipment cabinet. It refers to the volume of the internal space of the equipment cabinet. It is the convective heat transfer coefficient. It is the mass transfer coefficient. It is the saturated steam concentration. It refers to the concentration of ambient steam. It is the latent heat of vaporization. It is the ventilation coefficient.

5. The method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing as described in claim 4, characterized in that, The equivalent leakage rate is corrected to obtain the corrected leakage rate estimate, which includes: The expression (1) is calculated As initial values, then... Make corrections to obtain the corresponding estimated leakage amount. The corrected formula is as follows: （3） Equation (3) is the corrected leakage calculation model, where, , and For undetermined coefficients, This is a time series of the temperature signal output from the first temperature and humidity sensor. The length of the time series is determined based on the modeling requirements. This is the time series of humidity signals output by the first temperature and humidity sensor.

6. The method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing as described in claim 5, characterized in that, In the step of integrating all corrected leakage estimates to obtain the average leakage amount characterizing the leakage situation of the ultrasonic cleaning equipment, the calculation expression is as follows: (4) In equation (4) ( ) is an adjustable coefficient.

7. The method for diagnosing leakage in ultrasonic cleaning equipment based on temperature and humidity sensing as described in claim 6, characterized in that, In the process of diagnosing leakage based on a preset leakage threshold, the method for judging the leakage diagnosis result is as follows: like If it is clear, it means there is no leakage; if If it is 0, it indicates a minor leak; if If it is 0, it indicates moderate leakage; if This indicates a serious leak, among which, , and This is a preset threshold.

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