Intelligent regulation and control system of ship vacuum closestool

Abstract

The invention belongs to the technical field of vacuum closestools, and particularly relates to an intelligent regulation and control system for a ship vacuum closestool, the intelligent regulation and control system comprises a vacuum closestool, a control unit, a monitoring unit and a controlled system, the monitoring unit is electrically connected with the data input end of the control unit through a wire, and the controlled system is electrically connected with the control end of the control unit through a wire. The monitoring unit comprises a personnel monitor, a dirt content monitor and a gas monitor, the controlled system comprises a vacuum sewage pump, a spraying system and an exhaust system, through combination of an advanced dirt detection algorithm and environmental parameters, precise cleaning control and air management are achieved, the resource utilization efficiency is optimized, and the environmental pollution is reduced. The system automatically adjusts the cleaning intensity according to the dirt amount and the environmental condition, an efficient, energy-saving and environment-friendly ship sanitation solution is achieved, and the user experience is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum toilets, in particular to an intelligent control system for a ship vacuum toilet. Background Art

[0002] With the rapid development of the shipping industry, ships have increasingly higher requirements for living facilities during long voyages, especially in terms of ship sanitation systems. The special ship environment, hull shaking during voyage, limited fresh water resources, and environmental protection requirements for sewage treatment have limited the application of traditional gravity flushing toilets on ships. In order to solve these problems, the application of vacuum toilets in ships has gradually increased and has become an important part of modern ship sanitation systems.

[0003] Existing ship vacuum toilets use the negative pressure generated by a vacuum pump in a closed pipe to quickly suck waste out of the toilet and transport it to a waste storage or treatment system. Compared with traditional gravity flushing toilets, vacuum toilets greatly reduce water consumption, and due to their sealed design, they can effectively prevent the spread of odors and improve the quality of life of crew members.

[0004] The existing ship vacuum toilet system still has some shortcomings and deficiencies: under different navigation conditions, the suction of the vacuum pump is difficult to dynamically adjust according to the amount of dirt and the status of the pipeline, which sometimes results in excessive suction and waste of energy, or insufficient suction and ineffective cleaning. In addition, the control of the amount of water sprayed, the maintenance of air quality and the removal of odor also lack intelligent adjustment means, resulting in waste of resources and poor user experience; the optimization of the ship vacuum toilet system not only needs to solve the traditional dirt removal problem, but also needs to consider the adaptability to the special environment of the ship. The ship's fresh water resources are limited, and seawater cannot be used for sewage discharge. Seawater is corrosive. It is particularly important to save fresh water resources and reduce energy consumption. It is also necessary to ensure the long-term stable operation of air quality and maintenance equipment; therefore, it is particularly important to develop an intelligent control system for ship vacuum toilets. Summary of the invention

[0005] In order to make up for the shortcomings of existing vacuum toilets, the patented intelligent control system of the present invention realizes the intelligent dynamic control of the vacuum sewage pump suction, the water spray volume of the spray system, and the power of the exhaust system; it saves fresh water resources and energy, and proposes an intelligent control system for ship vacuum toilets.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the intelligent control system of a ship vacuum toilet described in the present invention includes a vacuum toilet, a control unit, a monitoring unit, and a controlled system. The monitoring unit is electrically connected to the data input end of the control unit through a wire, and the controlled system is electrically connected to the control end of the control unit through a wire. A dirt chamber is arranged in the vacuum toilet. The monitoring unit includes a personnel monitor for detecting whether a person uses the vacuum toilet and a dirt content monitor for detecting the weight of excrement and impurities in the dirt chamber, and a gas monitor for detecting the odor content. The controlled system includes a vacuum sewage pump, a spray system, and an exhaust system. The vacuum sewage pump is connected to the bottom end of the vacuum toilet through a connecting pipe, and the other end is connected to a collection box. The spray system is composed of a plurality of array nozzles arranged on the periphery of the inner wall of the vacuum toilet. The exhaust system includes an exhaust fan for exhausting ambient gas;

[0007] The operation of the intelligent control system includes the following steps:

[0008] The personnel monitor detects whether a user uses the vacuum toilet and sends the detection data to the control unit. If someone uses the vacuum toilet, the control unit controls the monitoring unit and the controlled unit to be powered on;

[0009] The dirt content monitor detects the content of excrement and impurities inside the vacuum toilet in real time, and sends the data to the data processing end of the control unit, and the control unit calculates the appropriate suction force required by the vacuum sewage pump based on the weight values ​​of the excrement and impurities;

[0010] The control unit calculates the content of cleaning liquid required to be sprayed by the spray system according to the weight values ​​of the excrement and impurities;

[0011] The gas monitor monitors the odor value in the gas in the environment in real time and sends the monitored value to the data processing end of the control unit. The control unit calculates the appropriate power required by the exhaust system based on the odor content value to accelerate air circulation.

[0012] Preferably, the control unit calculates the appropriate suction force required by the vacuum sewage pump according to the dirt content value in the vacuum toilet detected by the dirt content monitor as follows:

[0013] Providing dirt content numerical information based on a dirt content monitor;

[0014] F(t) is the suction force of the vacuum sewage pump (kPa);

[0015] S(t) is the amount of dirt (g);

[0016] is the dirt change rate (g / s);

[0017] The appropriate suction required by the vacuum sewage pump can be calculated by the following formula:

[0018]

[0019] Where: k1 is the sensitivity of the amount of dirt to the suction force, and the value obtained from actual tests is 0.5. This value can be modified in the control unit according to different needs;

[0020] α1 is the factor affecting the dirt change rate on suction, and the value obtained from actual tests is 0.02. This value can be modified in the control unit according to different needs;

[0021] γ1 is the attenuation coefficient of the dirt change rate, and the value obtained from actual tests is 0.01. This value can be modified in the control unit according to different needs;

[0022] b1 is the basic suction force, and the value obtained from actual tests is 15kPa. This value can be modified in the control unit according to different needs;

[0023] Max Suction is the maximum allowable suction force. According to actual tests, the value is 30kPa. This value can be modified in the control unit according to different needs.

[0024] Preferably, the control unit calculates the cleaning liquid content required to be sprayed by the spray system according to the dirt content value in the vacuum toilet detected by the dirt content monitor as follows:

[0025] Providing dirt content numerical information based on a dirt content monitor;

[0026] W(t) is the amount of water sprayed (ml);

[0027] F(t) is the suction force of the vacuum sewage pump (kPa);

[0028] S(t) is the amount of dirt (g);

[0029] is the dirt change rate (g / s);

[0030] The amount of cleaning fluid required to be sprayed by the spray system can be calculated using the following formula:

[0031]

[0032] Where: k2 is the sensitivity of the amount of dirt to the amount of water sprayed, and the value obtained from actual tests is 5. This value can be modified in the control unit according to different needs;

[0033] α2 is the influence factor of suction force on water spray volume. According to actual test, the value is 0.1. This value can be modified in the control unit according to different needs.

[0034] β2 is the factor affecting the dirt change rate on the water spray volume. According to actual tests, the value is 0.02. This value can be modified in the control unit according to different needs.

[0035] b2 is the basic water spray volume, which is 100ml according to actual tests. This value can be modified in the control unit according to different needs;

[0036] Max Water is the maximum water spray volume. According to actual tests, the value is 300ml. This value can be modified in the control unit according to different needs.

[0037] Preferably, the control unit calculates the appropriate power required by the exhaust system according to the value of the odor in the gas in the environment monitored by the gas monitor as follows:

[0038] Provides air quality index numerical information based on gas monitors;

[0039] P(t) is the exhaust fan power (watt, W);

[0040] Q(t) is the air quality index (AQI);

[0041] S(t) is the amount of dirt (g);

[0042] The appropriate power required by the exhaust system can be calculated using the following formula:

[0043] P(t)=min(Max Power, (k4·(1-e -Q(t) / θ )+a4·(1-exp(-γ4·S(t)))+b4))

[0044] k4 is the main amplification factor related to the air quality index. According to actual tests, the value is 30. This value can be modified in the control unit according to different needs;

[0045] θ is an adjustment parameter used to control the rate of exponential growth and the adjustment parameter for controlling the exhaust fan power response speed. According to actual tests, the value is 100. This value can be modified in the control unit according to different needs;

[0046] a4 is used to adjust the exhaust fan's sensitivity to the amount of dirt. According to actual tests, the value is 0.05W. This value can be modified in the control unit according to different needs;

[0047] γ4 is the exponential growth rate of the effect of the amount of dirt on the power. According to actual tests, the value is 0.01. This value can be modified in the control unit according to different needs.

[0048] b4 is the basic power, and the value obtained from actual tests is 5W. This value can be modified in the control unit according to different needs;

[0049] Max Power is the maximum power of the exhaust fan. According to actual tests, the value is 30W. This value can be modified in the control unit according to different needs.

[0050] Preferably, the control unit includes a self-learning module, which can dynamically adjust the suction of the vacuum sewage pump, the amount of water sprayed, and the power of the exhaust fan based on feedback data collected during multiple uses, including dirt removal effects, energy consumption, user satisfaction, and environmental changes. The self-learning module analyzes historical data through a machine learning algorithm and generates optimized control parameters, so that the system can achieve optimal performance in different environments and usage conditions, while reducing energy consumption and water consumption.

[0051] Preferably, the control unit includes a multi-level fault detection module, which identifies possible faults or abnormal conditions of the equipment by monitoring the current, voltage, operating time, temperature and other parameters of the vacuum sewage pump, water spray mechanism and exhaust fan. When excessive current, abnormally extended operating time, temperature exceeding the limit or other fault signals are detected, the control unit warns the user through the display, sound, smartphone application and remote server, and automatically stops the operation of the faulty component when necessary.

[0052] Beneficial effects of the present invention:

[0053] The present invention provides an intelligent control system for a ship vacuum toilet;

[0054] 1. Intelligent dynamic control: The present invention realizes intelligent dynamic control of vacuum sewage pump suction, spray system water volume, and exhaust system power through an intelligent control system; this innovative design can automatically adjust various parameters according to the amount of dirt, air quality, and user needs under different conditions to achieve the best cleaning effect and air quality, while reducing the waste of resources;

[0055] 2. Energy saving and emission reduction: The intelligent control system can accurately control the operating parameters of various equipment according to actual conditions. For example, it can calculate the appropriate suction force required by the vacuum sewage pump to avoid energy waste caused by excessive suction force. It can also adjust the exhaust fan power by real-time monitoring of the air quality index, optimize energy use and reduce energy consumption. In addition, the spray system can intelligently adjust the water spraying volume according to the amount of dirt, further improving water-saving performance.

[0056] 3. Enhance equipment adaptability: During the navigation process of the ship, facing different navigation conditions and environmental changes, the intelligent control system of the present invention can automatically adapt and adjust various parameters, ensuring the stability and reliability of the equipment during long-term operation. In addition, the multi-level fault detection module can monitor the equipment status in real time, discover and handle potential faults in time, and extend the service life of the equipment;

[0057] 4. Environmental protection and sustainability: By reducing energy consumption and water waste, the present invention significantly improves environmental performance. The application of the intelligent control system enables the ship vacuum toilet system to achieve optimal performance under different environments and usage conditions, while reducing operating and maintenance costs, reflecting a strong sustainability advantage;

[0058] 5. Through this nonlinear function control algorithm, it can flexibly adapt to changes in dirt volume and air quality, intelligently adjust cleaning and ventilation intensity, and achieve dynamic control, thereby significantly improving adaptive capabilities; by accurately adjusting dirt treatment, water consumption and electricity usage, the system effectively reduces resource waste and achieves efficient water and electricity saving effects; combined with environmental detection, the system can dynamically adjust the exhaust fan power to ensure fresh air and reduce energy consumption; this control algorithm shows obvious advantages in terms of intelligence, resource efficiency, equipment safety and air management. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0060] Figure 1 It is a structural diagram of the present invention as a whole;

[0061] Figure 2 It is a structural block diagram of the system of the present invention;

[0062] Legend:

[0063] 1. Vacuum toilet; 01. Dirt chamber; 2. Dirt content monitor; 3. Vacuum sewage pump; 4. Collection box; 5. Nozzle; 6. Exhaust fan; 8. Personnel monitor; 9. Gas monitor. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] Specific examples are given below.

[0066] See also Figure 1 , Figure 2 The intelligent control system of a ship vacuum toilet described in the present invention comprises a vacuum toilet 1, a control unit, a monitoring unit, and a controlled system. The monitoring unit is electrically connected to the data input end of the control unit through a wire, and the controlled system is electrically connected to the control end of the control unit through a wire. A dirt chamber 01 is arranged in the vacuum toilet 1. The monitoring unit comprises a personnel monitor 8 for detecting whether a person uses the vacuum toilet 1 and a dirt content monitor 2 for detecting the weight of excrement and impurities in the dirt chamber 01, and a gas monitor 9 for detecting the odor content. The controlled system comprises a vacuum sewage pump 3, a spray system, and an exhaust system. The vacuum sewage pump 3 is connected to the bottom end of the vacuum toilet 1 through a connecting pipe, and the other end is connected to a collecting box 4. The spray system is composed of a plurality of array nozzles 5 arranged on the inner wall of the vacuum toilet 1. The exhaust system comprises an exhaust fan 6 for exhausting ambient gas.

[0067] The operation of the intelligent control system includes the following steps:

[0068] The personnel monitor 8 detects whether a user uses the vacuum toilet 1, and sends the detection data to the control unit. If someone uses the vacuum toilet 1, the control unit controls the monitoring unit and the controlled unit to be powered on;

[0069] The dirt content monitor 2 detects the content of excrement and impurities inside the vacuum toilet 1 in real time, and sends the data to the data processing end of the control unit, and the control unit calculates the appropriate suction force required by the vacuum sewage pump 3 according to the weight values ​​of the excrement and impurities;

[0070] The control unit calculates the content of cleaning liquid required to be sprayed by the spray system according to the weight values ​​of the excrement and impurities;

[0071] The gas monitor 9 monitors the odor value in the gas in the environment in real time and sends the monitored value to the data processing end of the control unit. The control unit calculates the appropriate power required by the exhaust system according to the odor content value to accelerate air circulation;

[0072] The system automatically adjusts the suction of the vacuum sewage pump to ensure the best cleaning effect under different dirt conditions while saving energy; the water spray volume is intelligently adjusted according to the changes in dirt and suction, reducing water waste and improving water-saving performance; the power of the exhaust fan 6 is dynamically adjusted according to the air quality index to improve ventilation effect while saving electricity; the system intelligently controls each component to optimize energy use, extend equipment life, and reduce operating costs; the system automatically adapts to user needs to achieve a convenient and personalized use experience; by reducing resource consumption, the system embodies strong environmental protection performance and sustainability advantages.

[0073] Furthermore, the control unit calculates the appropriate suction force required by the vacuum sewage pump 3 according to the dirt content value in the vacuum toilet 1 detected by the dirt content monitor 2 as follows:

[0074] Based on the dirt content monitor 2 providing dirt content numerical information;

[0075] F(t) is the suction force of the vacuum sewage pump 3 kPa;

[0076] S(t) is the amount of dirt g;

[0077] is the dirt change rate g / s;

[0078] The appropriate suction required by the vacuum sewage pump 3 can be calculated by the following formula:

[0079]

[0080] Where: k1 is the sensitivity of the amount of dirt to the suction force, which determines the direct effect of the amount of dirt on the suction force of the vacuum sewage pump 3. A larger k1 value means that when the amount of dirt increases, the suction force will also increase more, thus responding more strongly to the change in the amount of dirt;

[0081] α1 is the factor affecting the dirt change rate on the suction force, which controls the effect of the speed of the dirt change rate on the suction force. A larger α1 value indicates that the dirt change rate has a greater impact on the suction force.

[0082] γ1 is the attenuation coefficient of the dirt change rate, which affects the degree of influence of the dirt change rate on the suction. A larger γ1 value will accelerate the weakening of the influence of the dirt change rate on the suction, thereby avoiding overreaction;

[0083] b1 is the basic suction force, which sets a fixed minimum suction force value. This basic suction force will be provided even when the amount of dirt and the change rate are very low.

[0084] Max Suction is the maximum allowable suction force, which sets the upper limit of suction force to prevent the suction force from being too high, thereby avoiding energy waste and equipment damage. When working, the actual experimental data is brought into the algorithm for example:

[0085] k1 is 0.2 kpa / g; α1 is 0.01 kpa / g / s; b1 is 10 kpa; Max Suction is 30 kpa; S(t) is 30 g; is 2g / s;γ1 is 0.01;

[0086]

[0087] F(t)≈10+1.095+0.02=11.12kPa

[0088] The dirt content monitor 2 is configured as a weight monitor, which is a prior art. The weight monitor monitors the weight of dirt in the dirt chamber 01 in real time when someone uses the vacuum toilet 1. When the vacuum sewage pump 3 subsequently discharges the dirt, some water will remain in the dirt chamber 01, and the weight monitor will monitor the weight of the water. In order to improve the data accuracy, the control unit will "peel" and clear the weight data monitored by the weight monitor when calculating the value next time, so as to ensure that the suction value of the vacuum sewage pump 3 obtained by the subsequent algorithm is accurate. According to the above distance description, when the dirt content in the dirt chamber 01 is 30g, the corresponding suction force obtained is 11 .12kPa, the suction of the vacuum sewage pump 3 is automatically adjusted according to the amount of dirt and the rate of change, ensuring the cleaning effect while avoiding excessive use of energy. This means that the toilet can use a smaller suction force when the amount of dirt is small, thereby saving electricity, and will automatically increase the suction force when the dirt is large to ensure thorough cleaning. It can effectively clean the dirt without wasting energy. Compared with the existing simple linear function algorithm, the simple linear relationship will only increase or decrease the corresponding suction force in proportion when the amount of dirt increases or decreases. It relies on fixed parameters, is difficult to handle complex environmental changes, is not sensitive enough, and the user experience is relatively rigid and single.

[0089] Furthermore, the control unit calculates the cleaning liquid content required to be sprayed by the spray system according to the dirt content value in the vacuum toilet 1 detected by the dirt content monitor 2, and the calculation framework is:

[0090] Based on the dirt content monitor 2 providing dirt content numerical information;

[0091] W(t) is the amount of water sprayed, ml;

[0092] F(t) is the suction force of the vacuum sewage pump 3 kPa;

[0093] S(t) is the amount of dirt g;

[0094] is the dirt change rate g / s;

[0095] The amount of cleaning fluid required to be sprayed by the spray system can be calculated using the following formula:

[0096]

[0097] Among them: k2 is the sensitivity of the amount of dirt to the amount of water sprayed, which determines the degree of direct influence of the change in the amount of dirt on the amount of water sprayed. A larger k2 value means that when the amount of dirt increases, the increase in the amount of water sprayed will also be greater, thus responding more strongly to the change in the amount of dirt;

[0098] α2 is the influence factor of suction on the water spraying volume, which controls the influence of suction of vacuum sewage pump 3 on the water spraying volume. A larger α2 value indicates that the change of suction has a greater influence on the water spraying volume.

[0099] β2 is the factor affecting the fouling change rate on the water spraying volume, which determines the influence of the fouling change rate and the speed of the fouling change on the water spraying volume. A larger β2 value indicates that the fouling change rate has a greater influence on the water spraying volume.

[0100] b2 is the basic water spray volume, which sets a fixed minimum water spray volume. This basic water spray volume will be provided even when the amount of dirt and suction power are very low.

[0101] Max Water is the maximum water spraying volume, which sets the upper limit of the water spraying volume to prevent excessive water spraying and waste of water resources. When working, the actual experimental data is brought into the algorithm for example:

[0102] k2 is 5ml; α2 is 0.1ml; b2 is 100ml; Max Water is 300ml; β2 is 0.02; is 2g / s; S(t) is 30g; F(t) is 11.12kPa;

[0103] W(t)=min(300, (5·30+0.1·11.12)·log(1+0.02·3)+100)

[0104] w(t)≈min(300, (150+1.112)·log(1.06)+100)

[0105] W(t)≈min(300,151.112·0.025+100)=103.7778ml

[0106] When the dirt content in the vacuum toilet 1 is 30g, and the suction of the vacuum sewage pump 3 obtained by the control unit is 11.12kPa, it is calculated that the cleaning liquid content required to be sprayed by the spray system is 103.7778ml. The spray system dynamically adjusts the water spraying volume according to the amount of dirt, suction and dirt change rate, avoiding unnecessary waste of water resources. This can ensure that the minimum amount of water is used under the premise of effective cleaning, thereby improving the water-saving performance of the vacuum toilet 1; the control unit controls the operation of the spray system according to the obtained data, so that the cleaning liquid sprayed by the nozzle 5 is 103.7778ml; and compared with the existing simple linear function algorithm, the simple linear relationship will only increase or decrease the corresponding water spraying volume in a simple proportional manner when the amount of dirt increases or decreases, relying on fixed parameters, It is difficult to handle complex environmental changes, the response is not sensitive enough, the user experience is relatively rigid and single, and the resource adjustment is relatively fixed, which is easy to cause excessive or insufficient use of resources such as water and electricity.

[0107] Furthermore, the control unit calculates the appropriate power required by the exhaust system according to the value of the odor in the gas monitored by the gas monitor 9, and the calculation framework is:

[0108] Providing air quality index numerical information based on gas monitor 9;

[0109] P(t) is the power of exhaust fan 6 in watts, W;

[0110] Q(t) is the air quality index AQI;

[0111] S(t) is the amount of dirt g;

[0112] The appropriate power required by the exhaust system can be calculated using the following formula:

[0113] P(t)=min(Max Power, (k4·(1-e -Q(t) / θ )+a4·(1-exp(-γ4·S(t)))+b4))

[0114] k4 is the main amplification factor related to the air quality index, which determines the influence of the air quality index Q(t) on the power of the exhaust fan 6. A larger k4 value means that the change of the air quality index Q(t) will have a more significant impact on the power, especially when the air quality is poor, the increase in power will be more obvious;

[0115] θ is a regulating parameter used to control the rate of exponential growth and the regulating parameter for controlling the power response speed of the exhaust fan 6, especially the influence of the air quality index Q(t) on the power of the exhaust fan 6. A larger θ value will keep the power low when the air quality is good, and increase rapidly when the pollution is serious;

[0116] a4 is to adjust the sensitivity of the exhaust fan 6 to the amount of dirt, and to control the effect of the amount of dirt on the power of the exhaust fan 6. A larger a4 value means that when the amount of dirt increases, the increase in the power of the exhaust fan 6 will also be greater;

[0117] γ4 is the exponential growth rate for adjusting the effect of dirt on power, which affects the effect of dirt on the power of exhaust fan 6. In particular, as the amount of dirt increases, the increase in the power of exhaust fan 6 will gradually weaken, and a larger γ4 value will accelerate the weakening speed of this effect.

[0118] B4 is the basic power, which sets a fixed minimum power value and provides this basic power even when the air quality and dirt amount are very low;

[0119] Max Power is the maximum power of the exhaust fan 6, which sets the upper limit of the power of the exhaust fan 6 to prevent the power from being too high, thereby avoiding energy waste and equipment damage. When working, the actual experimental data is brought into the algorithm for example:

[0120] k4 is 30W; α4 is 0.05W; b4 is 5W; Max Power is 30W; Q(t) is 70AQI; θ is 100; γ4 is 0.01; S(t) is 30g;

[0121] P(t)=min(30, (30·(1-e-70 / 100)+0.05·(1-exp(-0.01·30))+5))

[0122] P(t)≈min(30,(30·(1-e -0.7 )+0.05·(1-exp(-0.3))+5))

[0123] P(t)≈min(30, (30·(1-0.4966)+0.05·0.2592+5))

[0124] P(t)≈min(30, (30·0.5034+0.01296+5))

[0125] P(t)≈min(30, (15.102+0.01296+5))

[0126] P(t)≈min(30,20.115)=20.115W

[0127] The odor components of human excrement are mainly composed of a variety of volatile compounds: hydrogen sulfide, ammonia, methyl mercaptan, indole and skatole, dimethyl sulfide; volatile fatty acids: such as propionic acid, butyric acid, etc., thiol compounds; these gases and compounds together constitute the odor components of excrement, and the gas monitor 9 evaluates the air quality index Q(t) by monitoring the concentration of these volatile gases. The gas monitor 9 uses MQ-135, and its working principle is the existing technology;

[0128] According to the above algorithm, it is calculated that the appropriate power required by the exhaust fan 6 is 20.115W. The power of the exhaust fan 6 is automatically adjusted according to the air quality index Q(t) to ensure that ventilation is strengthened when the air quality is poor and the air circulation efficiency is improved. When the air quality is good, the power of the exhaust fan 6 is reduced to save energy, which helps to save electricity while keeping the air fresh. Compared with the existing simple linear function algorithm, the simple linear relationship will only increase or decrease the power of the exhaust fan 6 in proportion to the increase or decrease of the dirt amount or the air quality index. It relies on fixed parameters and is difficult to handle complex environmental changes. The response is not sensitive enough, and the user experience is relatively rigid and single. It is usually impossible to associate and link with environmental detection or other equipment, and can only provide fixed-intensity air management, which is not adaptable enough.

[0129] Furthermore, the control unit includes a self-learning module, which can dynamically adjust the suction of the vacuum sewage pump 3, the water spray volume of the nozzle 5, and the power of the exhaust fan 6 based on feedback data collected during multiple uses, including dirt removal effect, energy consumption, user satisfaction, environmental changes, etc. The self-learning module analyzes historical data through machine learning algorithms such as neural networks or decision trees, and generates optimized control parameters, so that the system can achieve optimal performance in different environments and usage conditions, while reducing energy consumption and water consumption; when working, the self-learning module is introduced, and the control parameters of the vacuum toilet 1 are dynamically optimized by collecting and analyzing feedback data during use, and machine learning technology is used to dynamically optimize the control parameters of the vacuum toilet 1. The system automatically adjusts the suction, water spray volume and exhaust fan power to achieve the best cleaning effect and resource utilization in different environments. The self-learning module is continuously updated and optimized to ensure that the system continuously improves performance during use, reduces resource waste, and improves user experience.

[0130] Furthermore, the control unit includes a multi-level fault detection module, which identifies possible faults or abnormal conditions of the equipment by monitoring the current, voltage, operation time, temperature and other parameters of the vacuum sewage pump 3, the spray system and the exhaust fan 6. When excessive current, abnormally prolonged operation time, temperature exceeding the limit or other fault signals are detected, the control unit warns the user through the display, sound, smartphone application and remote server, and automatically stops the operation of the faulty component when necessary; when working, the various components of the vacuum toilet 1 system, such as the vacuum sewage pump 3, the spray system and the exhaust fan 6, are monitored in real time through the multi-level fault detection module. When abnormal parameters are detected, the system automatically identifies the fault and issues a warning in time. The module also supports remote diagnosis and maintenance to ensure the safety, stability and continuous operation of the system.

[0131] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0132] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An intelligent control system for a ship vacuum toilet, characterized in that: The invention comprises a vacuum toilet (1), a control unit, a monitoring unit, and a controlled system. The monitoring unit is electrically connected to a data input terminal of the control unit via a wire. The controlled system is electrically connected to a control terminal of the control unit via a wire. A dirt chamber (01) is arranged in the vacuum toilet (1). The monitoring unit comprises a personnel monitor (8) for detecting whether a person uses the vacuum toilet (1) and a dirt content monitor (2) for detecting the weight of excrement and impurities in the dirt chamber (01), and a gas monitor (9) for detecting the odor content. The controlled system comprises a vacuum sewage pump (3), a spray system, and an exhaust system. The vacuum sewage pump (3) is connected to the bottom end of the vacuum toilet (1) via a connecting pipe, and the other end is connected to a collecting box (4). The spray system is composed of a plurality of array nozzles (5) arranged on the periphery of the inner wall of the vacuum toilet (1). The exhaust system comprises an exhaust fan (6) for exhausting ambient gas. The personnel monitor (8) detects whether a user is using the vacuum toilet (1), and sends the detection data to the control unit. If someone is using the vacuum toilet (1), the control unit controls the monitoring unit and the controlled unit to be powered on; The dirt content monitor (2) detects the content of excrement and impurities inside the vacuum toilet (1) in real time, and sends the data to the data processing end of the control unit, and the control unit calculates the appropriate suction force required by the vacuum sewage pump (3) based on the weight values ​​of the excrement and impurities; The control unit calculates the content of cleaning liquid required to be sprayed by the spray system according to the weight values ​​of the excrement and impurities; The gas monitor (9) monitors the odor value in the gas in the environment in real time and sends the monitored value to the data processing end of the control unit. The control unit calculates the appropriate power required by the exhaust system based on the odor content value to accelerate air circulation.

2. The intelligent control system for a ship vacuum toilet according to claim 1, characterized in that: The control unit calculates the appropriate suction force required by the vacuum sewage pump (3) according to the dirt content value in the vacuum toilet (1) detected by the dirt content monitor (2) as follows: Providing dirt content numerical information based on the dirt content monitor (2); F(t) is the suction force of the vacuum sewage pump (kPa); S(t) is the amount of dirt (g); is the dirt change rate (g / s); The appropriate suction required by the vacuum sewage pump (3) can be calculated using the following formula: Among them: k1 is the sensitivity of the amount of dirt to the suction force, which determines the direct impact of the amount of dirt on the suction force of the vacuum sewage pump. A larger k1 value means that when the amount of dirt increases, the suction force will also increase more, thus responding more strongly to changes in the amount of dirt; α1 is the factor affecting the dirt change rate on the suction force, which controls the effect of the dirt change rate (the speed of the dirt amount change) on the suction force. A larger α1 value indicates that the dirt change rate has a greater impact on the suction force. γ1 is the attenuation coefficient of the dirt change rate, which affects the degree of influence of the dirt change rate on the suction. A larger γ1 value will accelerate the weakening of the influence of the dirt change rate on the suction, thereby avoiding overreaction; b1 is the basic suction force, which sets a fixed minimum suction force value. This basic suction force will be provided even when the amount of dirt and the change rate are very low. Max Suction is the maximum allowable suction force, which sets an upper limit for suction force to prevent excessive suction force, thereby avoiding energy waste and equipment damage.

3. The intelligent control system for a ship vacuum toilet according to claim 1, characterized in that: The control unit calculates the content of cleaning liquid required to be sprayed by the spray system according to the dirt content value in the vacuum toilet (1) detected by the dirt content monitor (2). The calculation framework is: Providing dirt content numerical information based on the dirt content monitor (2); W(t) is the amount of water sprayed (ml); F(t) is the suction force of the vacuum sewage pump (kPa); S(t) is the amount of dirt (g); is the dirt change rate (g / s); The amount of cleaning fluid required to be sprayed by the spray system can be calculated using the following formula: Among them: k2 is the sensitivity of the amount of dirt to the amount of water sprayed, which determines the degree of direct influence of the change in the amount of dirt on the amount of water sprayed. A larger k2 value means that when the amount of dirt increases, the increase in the amount of water sprayed will also be greater, thus responding more strongly to the change in the amount of dirt; α2 is the influence factor of suction on the water spraying volume, which controls the influence of vacuum sewage pump suction on the water spraying volume. A larger α2 value indicates that the change of suction has a greater influence on the water spraying volume. β2 is the factor affecting the fouling change rate on the water spraying volume, which determines the effect of the fouling change rate (the speed of fouling change) on the water spraying volume. A larger β2 value indicates that the fouling change rate has a greater influence on the water spraying volume. b2 is the basic water spray volume, which sets a fixed minimum water spray volume. This basic water spray volume will be provided even when the amount of dirt and suction power are very low. Max Water is the maximum water spraying volume, which sets an upper limit for the water spraying volume to prevent excessive water spraying and thus waste of water resources.

4. The intelligent control system for a ship vacuum toilet according to claim 1, characterized in that: The control unit calculates the appropriate power required by the exhaust system according to the value of the odor in the gas monitored by the gas monitor (9) as follows: Providing air quality index numerical information based on a gas monitor (9); P(t) is the power of the exhaust fan (6) (watt, W); Q(t) is the air quality index (AQI); S(t) is the amount of dirt (g); The appropriate power required by the exhaust system can be calculated using the following formula: P(t)=min(Max Power,(k4·(1-e -Q(t) / θ )+a4·(1-exp(-γ4·S(t)))+b4)) k4 is the main amplification factor related to the air quality index, which determines the influence of the air quality index Q(t) on the power of the exhaust fan (6). A larger k4 value means that the change of the air quality index Q(t) will have a more significant impact on the power, especially when the air quality is poor, the increase in power will be more obvious; θ is a regulating parameter used to control the rate of exponential growth, a regulating parameter for controlling the power response speed of the exhaust fan (6), and in particular, the influence of the air quality index Q(t) on the power of the exhaust fan (6). A larger θ value will keep the power low when the air quality is good, and increase rapidly when the pollution is serious; a4 is used to adjust the sensitivity of the exhaust fan (6) to the amount of dirt, and to control the effect of the amount of dirt on the power of the exhaust fan (6). A larger a4 value means that when the amount of dirt increases, the power of the exhaust fan (6) will also increase more. γ4 is an exponential growth rate for adjusting the effect of the amount of dirt on the power, and affects the degree of effect of the amount of dirt on the power of the exhaust fan (6). In particular, as the amount of dirt increases, the increase in the power of the exhaust fan (6) will gradually weaken, and a larger γ4 value will accelerate the weakening speed of this effect. B4 is the basic power, which sets a fixed minimum power value and provides this basic power even when the air quality and dirt amount are very low; Max Power is the maximum power of the exhaust fan (6), which sets an upper limit for the power of the exhaust fan (6) to prevent the power from being too high, thereby avoiding energy waste and equipment damage.

5. The intelligent control system for a ship vacuum toilet according to claim 1, characterized in that: The control unit includes a self-learning module, which can dynamically adjust the suction force of the vacuum sewage pump (3), the water spray volume and the exhaust fan (6) power based on feedback data collected during multiple uses, including dirt removal effects, energy consumption, user satisfaction, and environmental changes. The self-learning module analyzes historical data through a machine learning algorithm and generates optimized control parameters, so that the system can achieve optimal performance under different environments and usage conditions, while reducing energy consumption and water consumption.

6. The intelligent control system for a ship vacuum toilet according to claim 1, characterized in that: The control unit includes a multi-level fault detection module, which identifies possible faults or abnormal conditions of the equipment by monitoring parameters such as the current, voltage, operating time, temperature, etc. of the vacuum sewage pump (3), the water spray mechanism and the exhaust fan (6). When excessive current, abnormally prolonged operating time, excessive temperature or fault signals are detected, the control unit warns the user through a display screen, sound, smartphone application and remote server, and automatically stops the operation of the faulty component when necessary.

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