A decontamination device for automatically emptying wastewater and a method of using the same

Abstract

The present invention discloses a disinfection device for automatically emptying wastewater and a method for using the device, the method comprising the following steps: step 1: using a disinfection brush head to form a semi-enclosed disinfection surface on the surface of the contaminated skin; step 2: spraying disinfection liquid on the disinfection surface through a disinfection liquid nozzle on the disinfection brush head; step 3: using a negative pressure recovery device to recover the disinfection waste liquid after reacting with the pollutants, and storing it in a sewage tank. The present invention realizes real-time monitoring and control of the liquid level: based on the control strategy of real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, the start and stop of the sewage pump can be adjusted according to the real-time change of the liquid level in the sewage tank, thereby realizing real-time monitoring and control of the liquid level.

Description

Technical Field

[0001] The invention relates to a cleaning and disinfection device for automatically emptying waste water and a use method thereof. Background Art

[0002] The "chemical contaminated casualty decontamination device" adopts the decontamination method of "local decontamination + immediate recovery of decontamination waste liquid". Its main components include decontamination brush head, decontamination liquid nozzle, negative pressure recovery device and sewage tank.

[0003] The disinfection brush head forms a semi-enclosed disinfection surface on the contaminated skin surface. The disinfection surface is separated from the surrounding area by the disinfection soft brush, and the disinfection liquid is sprayed on the disinfection surface. The disinfection waste liquid after reacting with the pollutants is immediately recovered by the negative pressure of the brush head. During the disinfection process, the disinfection liquid will not be sprayed outside the disinfection surface, nor will it flow out of the disinfection surface. After disinfection, no disinfection waste liquid will remain on the disinfection surface, which is convenient for further treatment and will not cause harm to the disinfection operator.

[0004] However, there is a problem with the existing disinfection device: when the waste liquid in the sewage tank is full, the sewage pump needs to be manually started to discharge it. This problem will cause the disinfection operation to be interrupted, affecting the efficiency and safety of disinfection. At the same time, this will also cause technical problems such as frequent start and stop and high energy consumption in scenarios with high frequency of use. Summary of the invention

[0005] The main purpose of the present invention is to provide a cleaning and disinfection device for automatically emptying waste water and a method of using the same to solve the above-mentioned problems.

[0006] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0007] A method for using a cleaning device for automatically emptying wastewater comprises the following steps

[0008] Step 1: Use the disinfection brush head to form a semi-closed disinfection surface on the contaminated skin surface;

[0009] Step 2: Spray the disinfectant on the disinfection surface through the disinfectant nozzle on the disinfection brush head;

[0010] Step 3: Use a negative pressure recovery device to recover the waste liquid after the reaction with the pollutants and store it in a sewage tank;

[0011] Step 4: Monitor the liquid level in the sewage tank in real time, and calculate the controller output v(t) based on the intelligent control strategy based on the real-time liquid level deviation and the liquid level change rate, and use it to optimize the start and stop of the sewage pump. The strategy-based controller sends a signal to the microprocessor to start or shut down the sewage pump;

[0012] Combined with the intelligent control strategy based on real-time liquid level deviation and liquid level change rate, the details are as follows:

[0013] 4.1 Calculate the real-time liquid level deviation;

[0014] The real-time liquid level deviation e_real(t) is equal to the current liquid level L(t) minus the preset upper limit L1. The specific formula is:

[0015] e_real(t)=L(t)-L1;

[0016] 4.2 Calculate the cumulative liquid level deviation;

[0017] The cumulative liquid level deviation is the integral of the liquid level deviation in a certain period of time. First, we need to obtain the liquid level deviation e_temp(t) at a certain time point t within a period of time. The specific formula is:

[0018] e_temp(t)=L(t)-L1;

[0019] Then, the integral of e_temp(t) within a certain period of time is defined as the cumulative liquid level deviation. The specific formula is:

[0020] Cumulative level deviation = ∫e_temp(t)dt;

[0021] 4.3 Calculate the liquid level change trend;

[0022] The liquid level change trend is the derivative of the liquid level deviation over time, that is, the rate of change of the liquid level deviation. The specific formula is:

[0023] Liquid level change trend = de(t) / dt;

[0024] 4.4 According to the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, as well as a set of control weight parameters W1, W2, W3, the controller output v(t) is calculated:

[0025] v(t)=W1*real-time liquid level deviation+W2*accumulated liquid level deviation+W3*liquid level change trend;

[0026] 4.5 Use the calculated controller output v(t) to achieve the optimal start and stop of the sewage pump;

[0027] v(t) represents the output of the controller. v(t) adjusts the start and stop of the sewage pump by integrating the influence of the real-time liquid level deviation, the cumulative liquid level deviation and the liquid level change trend. The value of v(t) is used to determine whether the liquid level meets the conditions for starting or shutting down the sewage pump.

[0028] Step 5: In the process of optimizing the start and stop of the sewage pump, when the liquid level in the sewage tank drops to a preset lower limit, the sewage pump is automatically shut down according to the control strategy;

[0029] Step 6: The waste liquid discharged from the sewage tank directly enters the waste liquid storage component located outside the cleaning device box and is evenly distributed on the outside of the box. When the space in the waste liquid storage component is insufficient, the waste liquid storage component containing the waste liquid is directly replaced to reduce the risk of secondary pollution;

[0030] Step 7: Repeat Step 1 to Step 6 until the decontamination process is complete.

[0031] Preferably, the formula for calculating the cumulative liquid level deviation from time t1 to t2 is:

[0032] Cumulative level deviation = ∫[t1, t2]e_temp(t)dt;

[0033] Among them, dt represents the preset time interval, ∫[t1,t2] represents the integration from time t1 to t2. During the integration process, the time interval is divided into multiple preset time segments, and the e_temp(t) in these preset time segments is accumulated and multiplied by the corresponding time interval dt. Finally, the integral sum of all preset time segments is summed to obtain the approximate integral value of the entire interval, that is, the cumulative liquid level deviation.

[0034] Preferably, when v(t) is greater than a preset threshold, the microprocessor sends a signal to start the sewage pump, and when v(t) is less than another preset threshold, the microprocessor sends a signal to shut down the sewage pump.

[0035] A disinfection device for automatically emptying waste water comprises a casing, wherein a microprocessor and a controller are arranged inside the casing, wherein the microprocessor is used to receive the output of the controller and control the start and stop of a sewage pump, wherein a fixed frame is arranged inside the casing, wherein a recoverable local disinfection device body is fixed in the inner cavity of the fixed frame, a disinfection liquid injection port is arranged on the top side of the recoverable local disinfection device body, and a disinfection liquid pipe and a disinfection waste liquid recovery pipe are connected to the top side surface of the recoverable local disinfection device body.

[0036] Preferably, the cleaning liquid pipe and the cleaning waste liquid recovery pipe are bundled together to form a cleaning pipe.

[0037] Preferably, the main body of the recoverable local disinfection device includes a sewage tank, a sewage pump is arranged in the sewage tank, the water outlet of the sewage pump is connected to a waste liquid storage component, and the waste liquid storage component is evenly surrounded on the outside of the box body, so that the waste liquid discharged from the sewage tank to the outside is evenly distributed on the outside of the box body.

[0038] Beneficial technical effects of the present invention:

[0039] 1. Based on the control strategy of real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, the start and stop of the sewage pump can be adjusted according to the real-time change of the liquid level in the sewage tank, realizing real-time monitoring and control of the liquid level;

[0040] 2. By calculating the controller output v(t) and optimizing the start and stop of the sewage pump according to the change of liquid level, the start and stop frequency of the sewage pump is reduced, energy consumption is reduced, and the life of the equipment is extended;

[0041] 3. Real-time monitoring of liquid level combined with intelligent control strategies can start the sewage pump in time when the liquid level reaches the preset upper limit, effectively reducing the risk of sewage tank overflow;

[0042] 4. By comprehensively considering the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, the sewage pump is finely controlled, thereby improving the operating stability of the system;

[0043] In summary, the present invention solves the technical problems of inaccurate liquid level monitoring, frequent starts and stops, and high energy consumption in traditional sewage pump control strategies, and improves the performance and effect of the disinfection device for automatically emptying wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic diagram of a box structure according to an embodiment of the present invention;

[0045] Figure 2 is a schematic diagram of a side view of a box body according to an embodiment of the present invention;

[0046] Figure 3 It is a schematic diagram of the main body three-dimensional structure of the recyclable local decontamination device according to an embodiment of the present invention;

[0047] Figure 4 Schematic diagram of the cross-sectional structure of a sewage tank according to an embodiment of the present invention.

[0048] In the figure: 1-box, 2-fixed frame, 4-recovery type local disinfection device body, 5-waste liquid storage component, 501-conduit, 502-liquid storage unit, 10-sewage tank, 11-sewage pump, 22-disinfection pipe, 2201-disinfection liquid pipe, 2202-disinfection waste liquid recovery pipe. DETAILED DESCRIPTION

[0049] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0050] like Figure 1-Figure 4As shown, the decontamination device for automatically emptying wastewater provided in this embodiment includes a box body 1, a controller and a microprocessor are also arranged in the box body 1, the controller is used to output v(t) to the microprocessor, and the microprocessor controls the start and stop of the sewage pump according to the data, a fixed frame body 2 is arranged inside the box body 1, a recovery type local decontamination device body 4 is fixed in the inner cavity of the fixed frame body 2, and a decontamination liquid injection port is arranged on the top side of the recovery type local decontamination device body 4;

[0051] The main body 4 of the recovery type local decontamination device includes a sewage tank 10, a sewage pump 11 is arranged in the sewage tank 10, and a waste liquid storage component is arranged at the water outlet of the sewage pump 11 for collecting the waste liquid discharged from the sewage tank 10;

[0052] The waste liquid storage component 5 has three parts. The first part is two soft conduits 501. The two conduits 501 have a common input port, which is connected to the water outlet of the sewage pump 4. The remaining two parts are plastic boxes (liquid storage units 502) located on the left and right sides of the box body 1. The two liquid storage units 502 are symmetrically distributed on the left and right sides. The length direction of the plastic box is the same as the length direction of the box body 1, and the length is also the same. The liquid storage unit 502 can be bonded or buckled with the box body 1. In this way, when the sewage pump 11 discharges the waste liquid in the sewage tank 10 to the waste liquid storage component 5 during use, the waste liquid passes through the two conduits 501 respectively, so that the waste liquid can be discharged to the left and right sides of the box body 1 respectively, which helps to ensure that the waste liquid is evenly distributed and reduce the risk of unstable center of gravity of the cleaning device box body 1;

[0053] The top side of the recovery type local decontamination device body 4 is connected with a decontamination liquid pipe 2201 and a decontamination waste liquid recovery pipe 2202, which are bundled together to form a decontamination pipe 22, and one end of the decontamination pipe 22 is connected with a direct current nozzle and a decontamination brush;

[0054] The main body 4 of the recoverable local disinfection device includes a disinfection liquid box and a water pump for spraying the disinfection liquid in the disinfection liquid box. The other end of the disinfection liquid pipe 2201 is connected to the water outlet of the water pump. It also includes a sewage tank 10 and an air pump for generating negative pressure, so that the waste liquid on the skin surface is sucked into the sewage tank 10. The recoverable local disinfection device sprays the disinfection liquid by pressurizing the water pump, and at the same time uses the air pump to generate negative pressure suction to promptly suck the disinfection waste liquid sprayed onto the skin tissue back into the sewage tank 10, so as to realize the recovery of the disinfection waste liquid during cleaning, and can effectively prevent the disinfection liquid from spilling, dripping and splashing, and avoid the disinfection waste liquid from harming medical staff and secondary pollution to the working environment.

[0055] A method for using a decontamination device for automatically emptying wastewater comprises the following steps:

[0056] Step 1: Use the disinfection brush head to form a semi-closed disinfection surface on the contaminated skin surface;

[0057] Step 2: Spray the disinfectant on the disinfection surface through the disinfectant nozzle on the disinfection brush head;

[0058] Step 3: Use a negative pressure recovery device to recover the waste liquid after the reaction with the pollutants and store it in a sewage tank;

[0059] Step 4: Monitor the liquid level in the sewage tank in real time, and calculate the controller output v(t) based on the intelligent control strategy based on the real-time liquid level deviation and the liquid level change rate, and use it to optimize the start and stop of the sewage pump. The strategy-based controller sends a signal to the microprocessor to start or shut down the sewage pump;

[0060] Combined with the intelligent control strategy based on real-time liquid level deviation and liquid level change rate, the details are as follows:

[0061] 4.1 Calculate the real-time liquid level deviation;

[0062] The real-time liquid level deviation e_real(t) is equal to the current liquid level L(t) minus the preset upper limit L1. The specific formula is:

[0063] e_real(t)=L(t)-L1;

[0064] 4.2 Calculate the cumulative liquid level deviation (integral of liquid level deviation over time);

[0065] The cumulative level deviation is the integral of the level deviation in a certain period of time (indicating the cumulative change of the level deviation in a certain period of time). First, we need to obtain the level deviation e_temp(t) at a certain time point t in a period of time. The specific formula is:

[0066] e_temp(t)=L(t)-L1;

[0067] Then, the integral of e_temp(t) within a certain period of time is defined as the cumulative liquid level deviation. The specific formula is:

[0068] Cumulative level deviation = ∫e_temp(t)dt;

[0069] Assume that the formula for calculating the cumulative level deviation from time t1 to t2 is:

[0070] Cumulative level deviation = ∫[t1, t2]e_temp(t)dt;

[0071] Here dt represents a small time interval, ∫[t1,t2] represents the integral from time t1 to t2. In the integration process, the time interval is divided into many small time segments, and the e_temp(t) in these small time segments is accumulated and multiplied by the corresponding time interval dt. Finally, the integral sum of all small time segments is summed up to get the approximate integral value of the entire interval. This value is the "cumulative liquid level deviation". The accuracy of this method depends on the size of the divided time segments. The smaller the time segment, the smaller the error between the calculated approximate value and the true value.

[0072] 4.3 Calculate the liquid level change trend (the derivative of liquid level deviation over time);

[0073] The liquid level change trend is the derivative of the liquid level deviation over time, that is, the rate of change of the liquid level deviation. The specific formula is:

[0074] Liquid level change trend = de(t) / dt;

[0075] By calculating the liquid level change trend, the rate of change of the liquid level deviation can be understood in real time, which helps to dynamically adjust the start and stop of the sewage pump, making the operation of the sewage pump more flexible to adapt to the actual situation of the liquid level change;

[0076] Assuming that the liquid level deviation increases suddenly, this may mean that the liquid level in the sewage tank rises rapidly, and the sewage pump may need to be started immediately. By calculating the liquid level change trend, this situation can be detected in real time and responded to quickly;

[0077] The liquid level change trend helps to improve the controller's response accuracy to liquid level changes, thereby achieving intelligent, flexible and more accurate sewage pump control;

[0078] 4.4 According to the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, as well as a set of control weight parameters W1, W2, W3, the controller output v(t) is calculated:

[0079] v(t)=W1*real-time liquid level deviation+W2*accumulated liquid level deviation+W3*liquid level change trend;

[0080] 4.5 Use the calculated controller output v(t) to achieve the optimal start and stop of the sewage pump;

[0081] v(t) represents the output of the controller, which is a real-time changing signal. v(t) adjusts the start and stop of the sewage pump by integrating the influence of the real-time liquid level deviation, the cumulative liquid level deviation and the liquid level change trend. The value of v(t) can be used to determine whether the liquid level meets the conditions for starting or shutting down the sewage pump.

[0082] For example, when v(t) is greater than a certain threshold, the microprocessor sends a signal to start the sewage pump, and when v(t) is less than another threshold, the microprocessor sends a signal to shut down the sewage pump;

[0083] In this way, the sewage pump can be controlled more intelligently and flexibly according to the real-time changes in the liquid level and its changing trend;

[0084] Based on the intelligent control strategy of real-time liquid level deviation and liquid level change rate, the start and stop of the sewage pump are optimized to better adapt to different sewage treatment scenarios;

[0085] Specifically, by real-time monitoring of the liquid level and calculating the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, the start and stop of the sewage pump can be controlled more accurately to avoid excessive discharge or insufficient treatment;

[0086] Step 5: In the process of optimizing the start and stop of the sewage pump, when the sewage tank level drops to

[0087] When the preset lower limit is reached, the sewage pump is automatically shut down according to the control strategy;

[0088] Step 6: The waste liquid discharged from the sewage tank directly enters the waste liquid storage component located outside the disinfection device box and is evenly distributed on the outside of the box. When the waste liquid storage component is about to be full and the sewage pump is not in working condition, the waste liquid storage component containing the waste liquid is directly replaced to reduce the risk of secondary pollution;

[0089] Step 7: Repeat Step 1 to Step 6 until the decontamination process is complete.

[0090] In this embodiment, first, we need to monitor the liquid level data L(t) in the sewage tank in real time through the sensor, and then calculate the liquid level deviation e_temp(t) at different time points t according to the formula e_temp(t)=L(t)-L1;

[0091] Next, the integral of e_temp(t) within a certain period of time is approximately calculated to obtain the cumulative liquid level deviation;

[0092] Finally, based on the real-time liquid level deviation, the accumulated liquid level deviation and the liquid level change trend, as well as a set of control weight parameters (W1, W2, W3), the controller output v(t) is calculated and used to optimize the start and stop of the sewage pump;

[0093] This step optimizes the start and stop of the sewage pump based on the intelligent control strategy of real-time liquid level deviation and liquid level change rate to avoid excessive discharge or insufficient treatment.

[0094] In this embodiment,

[0095] Step 4.1 Calculate the real-time liquid level deviation:

[0096] The real-time liquid level deviation (e_real(t)) is equal to the current liquid level (L(t)) minus the preset upper limit (L1). The specific formula is:

[0097] e_real(t)=L(t)-L1;

[0098] Assuming the current liquid level L(t)=8cm and the preset upper limit L1=30cm, the real-time liquid level deviation e_real(t)=8-30=-22cm;

[0099] Step 4.2 Calculate the accumulated level deviation:

[0100] Calculate the liquid level deviation e_temp(t) at each time point:

[0101] ;

[0102] Cumulative liquid level deviation = (1 / 2)*∑(e_temp(t_i)+e_temp(t_(i+1)))*Δt;

[0103] Where Σ represents the sum of the trapezoidal areas of all subintervals, t_i represents the i-th time point, Δt is the time interval, Δt=1s;

[0104] Cumulative liquid level deviation = ((-22+(-20)) / 2+(-20+(-16)) / 2+(-16+(-12)) / 2+(-12+(-7)) / 2+(-7+(-2)) / 2)*1=-79cm. This result is an approximation of the cumulative liquid level deviation = ∫e_temp(t)dt. Step 4.3 Calculate the liquid level change trend:

[0105] In the time period of 0~1s, the liquid level deviation changes from -22cm to -20cm, and the liquid level change trend = 2cm / s;

[0106] In the 1~2s time period, the liquid level deviation changes from -20cm to -16cm, and the liquid level change trend = 4cm / s;

[0107] In the 2~3s period, the liquid level deviation changes from -16cm to -12cm, and the liquid level change trend = 4cm / s;

[0108] In the 3~4s period, the liquid level deviation changes from -12cm to -7cm, and the liquid level change trend = 5cm / s;

[0109] In the 4~5s period, the liquid level deviation changes from -7cm to -2cm, and the liquid level change trend = 5cm / s;

[0110] Step 4.4 Calculate the controller output v(t) based on the real-time liquid level deviation, cumulative liquid level deviation, liquid level change trend, and control weight parameters W1=0.5, W2=0.3, W3=0.2:

[0111] v(t)=W1*real-time liquid level deviation+W2*accumulated liquid level deviation+W3*liquid level change trend;

[0112] Calculate the controller output v(t) at each time point (not calculated at 5 seconds):

[0113] ;

[0114] Assuming that when v(t) is greater than 0 (this value is only assumed in this embodiment and can be adjusted by itself, such as greater than 10cm), the microprocessor sends a signal to start the sewage pump; when v(t) is less than 0, the microprocessor sends a signal to shut down the sewage pump, so there are the following situations:

[0115] Time 0s: v(t) = -8.6, sewage pump is turned off;

[0116] Time 1s: v(t) = -6.3, the sewage pump is turned off;

[0117] Time 2s: v(t) = -2.4, the sewage pump is turned off;

[0118] Time 3s: v(t) = 1.2, the sewage pump starts;

[0119] Time 4s: v(t) = 4.25, the sewage pump starts;

[0120] It can be seen from the above that at the initial moment, due to the large liquid level deviation, the sewage pump is in the closed state. As time goes by, the liquid level gradually approaches the preset liquid level upper limit, and the liquid level deviation gradually decreases. When the liquid level change trend meets the conditions for starting the sewage pump, the controller output v(t) becomes a positive value, and the microprocessor sends a signal to start the sewage pump. This process reflects the real-time adjustment of the start and stop of the sewage pump based on the intelligent control strategy of real-time liquid level deviation and liquid level change rate.

[0121] In this embodiment, in actual application, the process of step 4 can be performed in real time, by real-time monitoring of the liquid level in the sewage tank, calculating the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, and calculating the controller output v(t) according to the control weight parameter, thereby realizing intelligent, flexible and precise control of the sewage pump;

[0122] This intelligent control strategy based on real-time liquid level deviation and liquid level change rate can help sewage pumps better adapt to different sewage treatment scenarios, improve the operating efficiency of sewage pumps, reduce energy consumption, and reduce operating costs. At the same time, through real-time monitoring and response to liquid level change trends, it can avoid excessively high or low liquid levels and ensure the normal operation of sewage treatment equipment.

[0123] In this embodiment, when v(t)>10cm, it means that the signal value output by the controller is high. In this scenario, it can be assumed that 10cm is the threshold for starting the sewage pump. When v(t) exceeds this threshold, it means that the liquid level in the sewage tank may rise quickly, or the cumulative liquid level deviation is large, and it may be necessary to start the sewage pump to discharge sewage.

[0124] Specifically, v(t) is determined by the real-time liquid level deviation, the cumulative liquid level deviation, the liquid level change trend, and the control weight parameter. When v(t)>10cm, it means that the liquid level deviation is large, the cumulative liquid level deviation increases rapidly, or the liquid level change trend is obvious. In this case, starting the sewage pump helps control the liquid level in the sewage tank and avoid safety hazards such as leakage caused by excessive liquid level.

[0125] Therefore, when v(t)>10cm, the intelligent control strategy recommends starting the sewage pump to better cope with the rising and changing trends of the liquid level.

[0126] In this embodiment, v(t) is the controller output value at a certain time t, which represents the control signal calculated based on the real-time liquid level deviation, the accumulated liquid level deviation and the liquid level change trend. The control signal reflects the current state of the sewage tank liquid level and provides a basis for starting and stopping the sewage pump.

[0127] In this embodiment, v(t) is used as a control signal and is transmitted to the microprocessor, which determines whether the sewage pump needs to be started or shut down based on the control signal;

[0128] For example, when the level deviation and level change trend meet the start-up conditions, the controller output v(t) will cause the microprocessor to send a signal to start the sewage pump;

[0129] When the shutdown condition is met, the controller output v(t) will cause the microprocessor to send a signal to shut down the sewage pump. In this way, through the coordinated work of v(t) and the microprocessor, the optimized start and stop of the sewage pump is achieved.

[0130] In this embodiment, the calculated liquid level change trend can be used to predict future liquid level changes. In actual operation, if the liquid level change trend continues to rise, it means that the liquid level rising speed is accelerating, and it may be necessary to start the sewage pump in advance to cope with the rapid rise in liquid level. Conversely, if the liquid level change trend continues to decrease, it means that the liquid level rising speed is slowing down, and the start of the sewage pump can be appropriately delayed.

[0131] In this embodiment, the method achieves the following effects:

[0132] 1. Real-time monitoring and control of liquid level is realized: Based on the control strategy of real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, the start and stop of the sewage pump can be adjusted according to the real-time change of the liquid level in the sewage tank, realizing real-time monitoring and control of the liquid level;

[0133] 2. Optimized the start and stop strategy of the sewage pump: By calculating the controller output v(t) and according to the change of liquid level, the start and stop of the sewage pump is optimized, thereby reducing the start and stop frequency of the sewage pump, reducing energy consumption, and extending the life of the equipment;

[0134] 3. Reduced overflow risk: Real-time monitoring of the liquid level combined with intelligent control strategies can start the sewage pump in time when the liquid level reaches the preset upper limit, effectively reducing the risk of sewage tank overflow;

[0135] 4. Improved system operation stability: By comprehensively considering the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, refined control of the sewage pump is achieved, thereby improving the system operation stability;

[0136] In summary, this step solves the technical problems of inaccurate liquid level monitoring, frequent start and stop, and high energy consumption in the traditional sewage pump control strategy, and improves the performance and effect of the disinfection device for automatically emptying wastewater.

[0137] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A method for using a decontamination device for automatically emptying waste water, characterized in that: The following steps are included Step 1: Use the disinfection brush head to form a semi-closed disinfection surface on the contaminated skin surface; Step 2: Spray the disinfectant on the disinfection surface through the disinfectant nozzle on the disinfection brush head; Step 3: Use a negative pressure recovery device to recover the waste liquid after the reaction with the pollutants and store it in a sewage tank; Step 4: Monitor the liquid level in the sewage tank in real time, and calculate the controller output v(t) based on the intelligent control strategy based on the real-time liquid level deviation and the liquid level change rate, and use it to optimize the start and stop of the sewage pump. The strategy-based controller sends a signal to the microprocessor to start or shut down the sewage pump; Combined with the intelligent control strategy based on real-time liquid level deviation and liquid level change rate, the details are as follows: 4.1 Calculate the real-time liquid level deviation; The real-time liquid level deviation e(t) is equal to the current liquid level L(t) minus the preset upper limit L1. The specific formula is: e(t)=L(t)-L1; 4.2 Calculate the cumulative liquid level deviation; The integral of e(t) within a certain period of time is defined as the cumulative liquid level deviation. The specific formula is: Cumulative level deviation = ∫ e (t)dt; The formula for calculating the cumulative level deviation from time t1 to t2 is: Cumulative level deviation = ∫ [t1,t2]e (t)dt; Wherein, dt represents the preset time interval, ∫ [t1, t2] represents the integral from time t1 to t2. During the integration process, the time interval is divided into multiple preset time segments, and the e(t) in these preset time segments is accumulated and multiplied by the corresponding time interval dt. Finally, the integral sum of all preset time segments is summed to obtain the approximate integral value of the entire interval, that is, the cumulative liquid level deviation; 4.3 Calculate the liquid level change trend; The liquid level change trend is the derivative of the liquid level deviation over time, that is, the rate of change of the liquid level deviation. The specific formula is: Liquid level change trend = de(t) / dt; 4.4 According to the real-time liquid level deviation, cumulative liquid level deviation and liquid level change trend, as well as a set of control weight parameters W1, W2, W3, the controller output v(t) is calculated: v(t) = W1*real-time liquid level deviation+W2*accumulated liquid level deviation+W3*liquid level change trend; 4.5 Use the calculated controller output v(t) to achieve the optimal start and stop of the sewage pump; v(t) represents the output of the controller. v(t) adjusts the start and stop of the sewage pump by integrating the influence of the real-time liquid level deviation, the cumulative liquid level deviation and the liquid level change trend. The value of v(t) is used to determine whether the liquid level meets the conditions for starting or shutting down the sewage pump. Step 5: In the process of optimizing the start and stop of the sewage pump, when the liquid level in the sewage tank drops to a preset lower limit, the sewage pump is automatically shut down according to the control strategy; Step 6: The waste liquid discharged from the sewage tank directly enters the waste liquid storage component located outside the cleaning device box and is evenly distributed on the outside of the box. When the space in the waste liquid storage component is insufficient, the waste liquid storage component containing the waste liquid is directly replaced to reduce the risk of secondary pollution; Step 7: Repeat steps 1 to 6 until the decontamination process is complete.

2. The method for using the automatic wastewater emptying decontamination device according to claim 1, characterized in that: When v(t) is greater than a preset threshold, the microprocessor sends a signal to start the sewage pump, and when v(t) is less than another preset threshold, the microprocessor sends a signal to shut down the sewage pump.

3. A decontamination device for automatically emptying waste water, characterized in that: It comprises a casing (1), wherein a microprocessor and a controller are arranged in the casing (1), wherein the controller is used to implement step 4 in the method for using the disinfection device for automatically emptying waste water as described in any one of claims 1 to 2, wherein the microprocessor is used to receive the output of the controller and control the start and stop of the sewage pump, wherein a fixed frame (2) is arranged on the inner side of the casing (1), wherein a recoverable local disinfection device body (4) is fixed in the inner cavity of the fixed frame (2), a disinfection liquid injection port is arranged on the top side of the recoverable local disinfection device body (4), and a disinfection liquid pipe (2201) and a disinfection waste liquid recovery pipe (2202) are connected to the top side of the recoverable local disinfection device body (4).

4. The automatic wastewater decontamination device according to claim 3 is characterized in that: The cleaning liquid pipe (2201) and the cleaning waste liquid recovery pipe (2202) are bundled together to form a cleaning pipe (22).

5. The automatic wastewater decontamination device according to claim 3 is characterized in that: The main body (4) of the recovery type local disinfection device comprises a sewage tank (10), a sewage pump (11) is arranged in the sewage tank (10), the water outlet of the sewage pump (11) is connected to a waste liquid storage component (5), and the waste liquid storage component (5) is evenly surrounded on the outside of the box body (1), so that the waste liquid discharged from the sewage tank (10) to the outside is evenly distributed on the outside of the box body (1).

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