CN117872719A - Water aqua sewage treatment control system, control method and application method - Google Patents
Water aqua sewage treatment control system, control method and application method Download PDFInfo
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- CN117872719A CN117872719A CN202410047336.7A CN202410047336A CN117872719A CN 117872719 A CN117872719 A CN 117872719A CN 202410047336 A CN202410047336 A CN 202410047336A CN 117872719 A CN117872719 A CN 117872719A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 238000011282 treatment Methods 0.000 title claims abstract description 80
- 239000010865 sewage Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 249
- 239000003814 drug Substances 0.000 claims abstract description 159
- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 34
- 230000000694 effects Effects 0.000 claims abstract description 19
- 230000008859 change Effects 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 claims description 13
- 239000002689 soil Substances 0.000 claims description 10
- 230000000875 corresponding effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 230000002596 correlated effect Effects 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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Abstract
The invention relates to the technical field of sewage treatment, in particular to a water aqua sewage treatment control system, a control method and an application method, wherein the water aqua sewage treatment control system comprises a liquid storage unit, a liquid medicament content monitoring unit, a stirring execution unit, a liquid medicament valve body control unit and a management terminal; the intelligent sewage treatment device integrates a plurality of key components, including liquid level sensing, liquid medicine content monitoring, valve body control and stirring execution units, thereby forming an intelligent control system, the intelligent sewage treatment device can monitor and adjust the treatment process in real time, so that the optimal sewage treatment effect can be obtained after the sewage is injected, the intelligent sewage treatment device can be used for gradually supplying the sewage to the excrement collector after the liquid medicine and clear water are stirred and mixed, so that the sewage concentrated in the excrement collector is treated once each time, the investment of the liquid medicine and the clear water can be accurately controlled based on the PID controller, the required treatment effect is realized, and the PID controller can adjust and control the output according to a real-time error signal, so that the stability and the accuracy of the system are maintained.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a water aqua sewage treatment control system, a control method and an application method.
Background
In railway traffic, the excrement collector sewage is a high-concentration excrement sewage, and common treatment of the excrement collector sewage is commonly used in railway traffic, such as chemical treatment and precipitation:
first, the urinal contaminants are collected from the train into a urinal holding tank, which typically contains high concentrations of fecal and urine, and therefore require dilution to reduce the concentration. Subsequently, a chemical liquid agent, typically polyaluminum chloride or other coagulant, is added to the soil to cause precipitation of solid particles and suspended matter, which precipitate at the bottom of the tank to form sludge, the clean liquid fraction is separated and typically subjected to further treatment, such as disinfection, to ensure that it meets emission standards, and the sludge can be further treated or disposed of, typically by desiccation or other suitable means.
The traditional method is often used for treating the sewage in the excrement collector after being concentrated, and has the problem of automation degree, the adding amount of the chemical liquid chemical agent cannot be regulated and controlled in real time, and the distribution uniformity of the chemical liquid chemical agent cannot be accurately controlled, so that the final treatment effect cannot be accurately controlled.
Disclosure of Invention
The invention provides a water aqua sewage treatment control system, a control method and an application method, thereby effectively solving the problems pointed out in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an aqueous soil treatment control system comprising:
the device comprises a liquid storage unit, a liquid medicament content monitoring unit, a stirring execution unit, a liquid medicament valve body control unit and a management terminal, wherein the liquid storage unit comprises a liquid level sensing module and a clear water valve body control module;
the liquid medicament content monitoring unit monitors the content of the liquid medicament in the liquid storage unit and outputs a monitoring result to the management terminal;
the liquid level sensing module senses the liquid level height in the liquid storage unit and outputs a sensing result to the management terminal;
the management terminal respectively supplies liquid medicament and clear water into the liquid storage unit according to the monitoring result and the sensing result, the liquid medicament valve body control unit and the clear water valve body control module are controlled to obtain a first control result, the stirring execution unit is controlled according to the first control result, and the stirring execution unit is used for mixing the liquid medicament and the clear water;
the control model of the control system is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the valve body of the liquid medicament, and V2 is the opening percentage of the valve body of the clean water; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
Further, the device also comprises an internal and external circulation switching control unit and an internal circulation unit;
the internal circulation unit is used for leading out the mixed liquid medicament and clear water and then re-flowing the mixed liquid medicament and clear water to the liquid storage unit;
the internal and external circulation switching control unit controls the internal and external circulation working mode of the water aqua sewage treatment system to be switched, and when the external circulation mode is switched, the liquid medicament and the clean water are discharged outwards.
Further, the internal and external circulation switching control unit switches the internal and external circulation working modes according to the setting parameters monitored in real time.
Further, the liquid level sensing module is one of a floating ball sensor, a pressure sensor and an ultrasonic sensor.
Further, parameters Kp, ki and Kd of the PID controller are automatically adjusted according to the content change condition of the liquid medicament monitored in real time, so as to achieve a more stable control effect.
Further, the management terminal comprises a data recording module and an alarm module;
the data recording module continuously records real-time data of the content and the liquid level height of the liquid medicament;
and the alarm module sets a preset threshold according to the recorded data, and when the parameters exceed a preset range, the alarm module gives an alarm and sends alarm information to the mobile terminal.
The invention also comprises a water aqua sewage treatment control method, which comprises the following steps:
monitoring the content of liquid medicament in the liquid storage unit;
sensing the liquid level in the liquid storage unit;
respectively supplying liquid medicament and clear water into the liquid storage unit, and controlling the opening degrees of the liquid medicament valve body and the clear water valve body according to the monitoring result and the sensing result to obtain a first control result;
according to a first control result, controlling the stirring speed of stirring the liquid medicament and the clear water in the liquid storage unit, and mixing the liquid medicament and the clear water;
the control model of the control method is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the valve body of the liquid medicament, and V2 is the opening percentage of the valve body of the clean water; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
Further, the method also comprises the following steps:
the mixed liquid medicament and clear water are led out and then are refluxed to the liquid storage unit again, and internal circulation is formed in the liquid storage unit;
and controlling the internal and external circulation working modes of the water aqua sewage treatment system to be switched, and discharging the liquid medicament and the clean water outwards when the external circulation working modes are switched.
Further, the method further comprises the following steps:
continuously recording real-time data of the content and the liquid level height of the liquid medicament;
and setting a preset threshold according to the recorded data, and sending an alarm by the alarm module when the parameters exceed a preset range, and sending alarm information to the mobile terminal.
The invention also comprises an application method of the water aqua sewage treatment control system, wherein the liquid storage unit is used as a centralized water tank of a plurality of excrement collectors in the rail transit equipment or an independent water tank of each excrement collector, and the water aqua sewage treatment control system is used for controlling the water supply of the centralized water tank or the independent water tank.
By the technical scheme of the invention, the following technical effects can be realized: the liquid storage unit comprises a liquid level sensing module and a clear water valve body control module; a plurality of key components including liquid level sensing, liquid medicine content monitoring, valve body control and stirring execution units are integrated, so that an intelligent control system is formed, the treatment process can be monitored and adjusted in real time, and the best sewage treatment effect can be obtained after the sewage is injected. In the application process, after the liquid medicament and the clear water are stirred and mixed, the liquid medicament and the clear water can be supplied into the excrement collector successively, so that the single treatment is carried out on the dirt concentrated in the excrement collector each time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a portion of an aqueous waste treatment control system installed relative to a toilet bowl;
FIG. 2 is a schematic diagram of the hardware connections of the aqua soil treatment control system;
FIG. 3 is a block diagram of an aqua soil treatment control system;
FIG. 4 is a block diagram of an optimization of an aqueous waste treatment control system;
FIG. 5 is a block diagram of another optimization of the aqua soil treatment control system;
FIG. 6 is a flow chart of a method of controlling the treatment of water-borne soil.
Reference numerals: 1. a liquid storage unit; 11. a liquid level sensing module; 12. a clear water valve body control module; 2. a liquid medicament content monitoring unit; 3. a stirring execution unit; 4. a liquid medicine valve body control unit; 41. a liquid medicament valve body; 5. a management terminal; 51. a data recording module; 52. an alarm module; 6. an internal and external circulation switching control unit; 7. an internal circulation unit; 8. a drug storage box; 9. a clear water pipeline; 10. and a discharge line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 6: an aqueous soil treatment control system comprising:
the liquid storage unit 1, the liquid medicament content monitoring unit 2, the stirring execution unit 3, the liquid medicament valve body control unit 4 and the management terminal 5, wherein the liquid storage unit 1 comprises a liquid level sensing module 11 and a clear water valve body control module 12;
the liquid medicament content monitoring unit 2 monitors the content of the liquid medicament in the liquid storage unit 1 and outputs a monitoring result to the management terminal 5;
the liquid level sensing module 11 senses the liquid level height in the liquid storage unit 1 and outputs the sensing result to the management terminal 5;
the management terminal 5 respectively supplies the liquid medicament from the medicament storage box 8 and the clear water from the clear water pipeline 9 to the liquid storage unit 1 according to the monitoring result and the sensing result, the liquid medicament valve body control unit 4 and the clear water valve body control module 12 are controlled to obtain a first control result, the stirring execution unit 3 is controlled according to the first control result, and the stirring execution unit 3 is used for mixing the liquid medicament and the clear water;
the control model of the control system is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the liquid medicament valve body 41, and V2 is the opening percentage of the clear water valve body; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit 3, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
In the invention, a plurality of key components including liquid level sensing, liquid medicine content monitoring, valve body control and stirring execution units are integrated, so that an intelligent control system is formed, and the treatment process can be monitored and regulated in real time, so that the best sewage treatment effect can be obtained after the sewage is injected into the sewage. The invention is based on the PID controller, can accurately control the input of liquid medicament and clean water to realize the required treatment effect, and the PID controller can adjust and control the output according to the real-time error signal, thereby maintaining the stability and the accuracy of the system; in the application process, after the liquid medicament and the clear water are stirred and mixed, the liquid medicament and the clear water can be supplied into the excrement collector successively, so that the collected dirt in the excrement collector is treated for one time.
In the implementation process, the control model introduces the change rate dS/dt of the medicament content, and has the following advantages:
the introduction of the rate of change dS/dt of the medicament content in the invention makes the system more flexible and can respond to the change of the medicament content more quickly, which can ensure that the control system adjusts operation more quickly to cope with abrupt dirt load or medicament input change, thereby reducing the hysteresis of the system; dS/dt can help the system adapt to changing process conditions, e.g., when the type of agent changes, the system can automatically adjust the control strategy according to the rate of change of the agent content to maintain optimal process results; the dS/dt consideration can improve the stability of the system, and is helpful for the system to better control the input of the medicament and the clean water so as to avoid the rapid fluctuation of the medicament concentration, thereby enabling the system to be more stable.
The settings of K1 and K2 for the system indicate that it should be adjusted according to the specific liquid medicament type and the required amount of medicament to ensure that the system is able to provide enough liquid medicament to meet the treatment requirements and to achieve an optimal treatment effect, this flexibility being very important for treating different types and sizes of dirt loads, there being a positive correlation between K1 and K2, the values of which increase with each other, in particular when the type of liquid medicament is determined, the values of K1 and K2 may increase simultaneously to ensure that the system is able to provide enough liquid medicament and clear water to meet the treatment requirements if a unit amount of dirt requires more liquid medicament to treat.
The values of a, b and c are usually determined according to specific system requirements and performance indexes, the selection of the values affects the response speed, stability and robustness of the system, and careful debugging and optimization can be performed after initial values are set to meet the actual requirements of the system.
In the invention, the liquid medicament can be in a liquid state or a liquid state after solid melting, so long as the liquid state is ensured when the liquid medicament is used in the system, the liquid state participates in the control of the system, the accurate control and adjustment are easier, the dosage of the medicament is ensured to meet the treatment requirement, thereby the treatment effect is improved, the liquid medicaments can quickly respond to the requirement of the system, because the liquid medicaments can be quickly injected into the system, the system is facilitated to quickly adjust the operation when the dirt load or the composition changes are treated, the liquid medicaments are generally easier to realize uniform distribution, and the uniform mixing of the medicaments in the treatment process is ensured to be very important for improving the treatment effect.
As a preference of the above embodiment, as shown in fig. 4, the block diagram of the optimization of the water aqua sewage treatment control system further includes an internal and external circulation switching control unit 6 and an internal circulation unit 7;
the internal circulation unit 7 is used for leading out the mixed liquid medicament and clear water and then re-flowing the mixed liquid medicament and clear water to the liquid storage unit 1;
specifically, the internal circulation unit 7 may adopt a return pipeline and a pump for re-draining the mixed liquid medicament and clear water to the liquid storage unit 1, wherein an integral stirring pump may be adopted, and the pump function and the stirring execution unit 3 function are obtained simultaneously, and the internal circulation unit 7 re-flows to the liquid storage unit 1 after the liquid medicament and clear water are led out, so that the liquid medicament and clear water can be fully mixed with dirt, the medicament can be ensured to effectively act on dirt particles, and the treatment effect is improved.
The internal and external circulation switching control unit 6 controls the internal and external circulation working mode switching of the water aqua sewage treatment system, and when the external circulation mode is switched, the liquid medicament and the clean water are discharged outwards through the discharge pipeline 10. In the internal circulation mode, the system mixes the liquid medicament and the clear water and then returns the mixed liquid medicament and the clear water to the liquid storage unit 1 again so as to achieve higher mixing effect and dirt treatment efficiency, and in the external circulation mode, the mixed water is discharged out of the system.
In the implementation process, after the supply of the liquid medicament and the clear water is completed, the internal circulation mode can be started, the starting time can be set, and the internal circulation mode can be continuously started when the external circulation mode is not switched; when the mixed liquid medicament and clean water are required to be discharged outwards, the external circulation mode is started, and the starting requirement of the external circulation mode is usually realized through the starting of a user.
In this embodiment, the internal and external circulation switching control unit 6 intelligently switches the internal and external circulation operation modes according to the setting parameters, such as the liquid level or the liquid medicine content, which are monitored in real time.
Secondly, through intelligent switching internal and external circulation mode of operation, can reduce the consumption to the use of clear water and liquid medicament. The system can realize automatic operation by intelligently switching the parameters monitored in real time. This reduces the need for human intervention, improves the convenience and efficiency of operation, and reduces the risk of human error.
The liquid level sensing module 11 is one of a floating ball sensor, a pressure sensor and an ultrasonic sensor.
The float ball sensor has the working principle that a float floats up and down along with the change of the liquid level, the liquid level height is determined by detecting the position of the float through the sensor, and the sensor has the advantages of simple structure and high reliability and is suitable for monitoring the liquid level of liquid media.
The pressure sensor determines the liquid level height by measuring the pressure applied by the liquid to the surface of the sensor, and is suitable for high-temperature, high-pressure and other environments; the ultrasonic sensor calculates the liquid level height by utilizing the reflection time of ultrasonic waves, and is suitable for non-contact measurement and monitoring of complex media.
The liquid level sensing module 11 has the advantages that the liquid level height in the liquid storage unit 1 can be accurately monitored in real time, so that the liquid level sensing module is provided for the management terminal 5 for reference, and the management terminal 5 can respectively supply liquid medicament and clear water to the liquid storage unit 1 according to the system requirements by timely obtaining the liquid level sensing result, so that the accurate control and adjustment of the water agent sewage treatment process are realized. Therefore, the treatment efficiency can be effectively improved, the waste of the medicament is reduced, and the stable operation of the system is ensured.
As a preference of the above embodiment, the parameters Kp, ki, kd of the PID controller are automatically adjusted according to the real-time monitored content change of the liquid medicament, so as to achieve a more stable control effect.
The change condition of the content of the liquid medicament is monitored in real time, and the parameters of the PID controller are automatically adjusted according to the feedback information, so that the processing process can be controlled more accurately and rapidly. Thus, the stability of the system can be improved, and the instability of the treatment effect caused by fluctuation of the content of the liquid medicament is avoided.
The conventional PID controller needs to set parameters in advance and not adjust during operation. The automatic adjusting function of the invention enables the PID controller to adaptively adjust parameters according to actual conditions. Thus, the method can better adapt to the treatment requirements of different sewage types and different operation conditions, and improves the adaptability and the flexibility of the treatment system.
Through automatic adjustment of PID controller parameters, the adding amount and stirring speed of the medicament can be controlled more accurately, so that the efficiency of the treatment process is improved, the change of the content of the liquid medicament is effectively controlled, excessive or insufficient medicament use is avoided, the cost is saved, and the sewage treatment time is shortened.
In this embodiment, as shown in fig. 5, another optimized block diagram of the aqua sewage treatment control system:
the management terminal 5 includes a data recording module 51 and an alarm module 52;
the data recording module 51 continuously records real-time data of the liquid medicament content, the liquid level height and other relevant parameters; the data recording module 51 is used for continuously recording real-time data, so that the parameter information such as the content, the liquid level height and the like of the liquid medicament can be accurately monitored and mastered, the next reference copy of the same medicament data is facilitated, and an accurate data basis is provided for the system operation.
The alarm module 52 sets a preset threshold according to the recorded data, and when the parameter exceeds a preset range, the alarm module 52 gives an alarm and sends alarm information to the mobile terminal. The system can prompt staff to take measures in time, can quickly find abnormal conditions, and take corresponding measures in time, so that possible problems or losses are avoided, and the system can realize automatic monitoring and control of the content and the liquid level height of the liquid medicament. Once the parameters exceed the preset range, the system can automatically alarm and take corresponding control measures, so that the stability and safety of the water aqua sewage treatment are ensured.
The invention also includes a control method for water aqua sewage treatment, as shown in fig. 6, a flow chart of the control method for water aqua sewage treatment comprises the following steps:
s10, monitoring the content of liquid medicament in the liquid storage unit 1;
s20, sensing the liquid level height in the liquid storage unit 1;
s30, respectively supplying liquid medicament and clear water to the liquid storage unit 1, and controlling the opening degrees of the liquid medicament valve body 41 and the clear water valve body according to the monitoring result and the sensing result to obtain a first control result;
s40, controlling the stirring speed of stirring the liquid medicament and the clear water in the liquid storage unit 1 according to a first control result, and mixing the liquid medicament and the clear water;
the control model of the control method is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the liquid medicament valve body 41, and V2 is the opening percentage of the clear water valve body; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit 3, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
The management terminal 5 controls the liquid medicament valve body control unit 4 and the clear water valve body control module 12 according to the monitoring result and the sensing result of the liquid medicament content monitoring unit 2 and the liquid level sensing module 11. The method comprises the steps of calculating and adjusting the opening degrees of the liquid medicament valve body 41 and the clear water valve body according to the liquid medicament content and the liquid level height which are monitored in real time so as to achieve the expected treatment effect and the target liquid medicament content.
As a preference of the above embodiment, the method further comprises the steps of:
the mixed liquid medicament and clear water are led out and then are refluxed to the liquid storage unit 1 again, and internal circulation is formed in the liquid storage unit 1;
and controlling the internal and external circulation working modes of the water aqua sewage treatment system to be switched, and discharging the liquid medicament and the clean water outwards when the external circulation working modes are switched. The technical effects of the preferred embodiment are the same as those achieved in the above embodiment, and will not be described here again.
In this embodiment, further comprising:
continuously recording real-time data of the content and the liquid level height of the liquid medicament;
and setting a preset threshold according to the recorded data, and sending an alarm by the alarm module 52 to send alarm information to the mobile terminal when the parameters exceed a preset range. The staff is reminded to check and maintain, and possible problems or losses are avoided.
The invention also comprises an application method of the water aqua sewage treatment control system, and the water aqua sewage treatment control system is used for controlling the water supply of the concentrated water tank or the independent water tank for each excrement collector by taking the liquid storage unit 1 as the concentrated water tank of a plurality of excrement collectors in the rail transit equipment as the optimization of the embodiment.
The water aqua sewage treatment control system in the embodiment can enable the liquid in the liquid storage unit 1 to obtain a uniform mixing state of the medicines, and the medicines are accurate, based on the characteristics, the liquid storage unit 1 is used as a concentrated water tank or an independent water tank, so that the liquid for flushing the excrement collector can independently treat the sewage generated each time, and the liquid is concentrated after the treatment, so that the treatment effect of guaranteeing the sewage can be effectively increased. Such treatment may be a pretreatment or a final treatment of the soil, and is specifically related to the type of agent selected and the specific treatment process, and is not intended as a limitation on the scope of the present invention.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An aqueous waste treatment control system, comprising: the device comprises a liquid storage unit, a liquid medicament content monitoring unit, a stirring execution unit, a liquid medicament valve body control unit and a management terminal, wherein the liquid storage unit comprises a liquid level sensing module and a clear water valve body control module;
the liquid medicament content monitoring unit monitors the content of the liquid medicament in the liquid storage unit and outputs a monitoring result to the management terminal;
the liquid level sensing module senses the liquid level height in the liquid storage unit and outputs a sensing result to the management terminal;
the management terminal respectively supplies liquid medicament and clear water into the liquid storage unit according to the monitoring result and the sensing result, controls the liquid medicament valve body control unit and the clear water valve body control module to obtain a first control result, controls the stirring execution unit according to the first control result, and mixes the liquid medicament and the clear water;
the control model of the control system is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the valve body of the liquid medicament, and V2 is the opening percentage of the valve body of the clean water; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
2. The water aqua sewage treatment control system of claim 1, further comprising an internal and external circulation switching control unit and an internal circulation unit;
the internal circulation unit is used for leading out the mixed liquid medicament and clear water and then re-flowing the mixed liquid medicament and clear water to the liquid storage unit;
the internal and external circulation switching control unit controls the internal and external circulation working mode of the water aqua sewage treatment system to be switched, and when the external circulation mode is switched, the liquid medicament and the clean water are discharged outwards.
3. The water aqua sewage treatment control system according to claim 2, wherein the internal and external circulation switching control unit switches the internal and external circulation operation modes according to the setting parameters monitored in real time.
4. The water treatment control system of claim 1, wherein the liquid level sensing module is one of a float sensor, a pressure sensor, and an ultrasonic sensor.
5. The system of claim 1, wherein the parameters Kp, ki, kd of the PID controller are automatically adjusted according to the real-time monitored liquid medicament content change, so as to achieve a more stable control effect.
6. The water aqua sewage treatment control system of claim 1, wherein the management terminal comprises a data recording module and an alarm module;
the data recording module continuously records real-time data of the content and the liquid level height of the liquid medicament;
and the alarm module sets a preset threshold according to the recorded data, and when the parameters exceed a preset range, the alarm module gives an alarm and sends alarm information to the mobile terminal.
7. A water-based soil treatment control method, comprising:
monitoring the content of liquid medicament in the liquid storage unit;
sensing the liquid level in the liquid storage unit;
respectively supplying liquid medicament and clear water into the liquid storage unit, and controlling the opening degrees of the liquid medicament valve body and the clear water valve body according to the monitoring result and the sensing result to obtain a first control result;
according to a first control result, controlling the stirring speed of stirring the liquid medicament and the clear water in the liquid storage unit, and mixing the liquid medicament and the clear water;
the control model of the control method is as follows:
V1=k1*(S/H)；
V2=k2*(S/H)；
e=a*V1-b*V2+c*dS/dt；
V3=Kp*e+Ki*∫(e)dt+Kd*de/dt
s is the content of the real-time liquid medicament obtained by monitoring, and the unit is g/L; h is the real-time liquid level height, and the unit is m; v1 is the opening percentage of the valve body of the liquid medicament, and V2 is the opening percentage of the valve body of the clean water; k1 and K2 are corresponding control parameters, and when the type of the liquid medicament is determined, the liquid medicament is positively correlated with the required liquid medicament usage amount of the unit amount of dirt, and the unit is L x m/g; e is a control error; dS/dt is the rate of change of the liquid medicament content; a. b and c are adjustment coefficients; v3 is the stirring speed output of the stirring execution unit, and the unit is R/min; kp, ki, kd are proportional, integral and differential coefficients of the PID controller; and (e) represents the integral of the control error.
8. The method for controlling the treatment of water-based soil according to claim 7, further comprising the steps of:
the mixed liquid medicament and clear water are led out and then are refluxed to the liquid storage unit again, and internal circulation is formed in the liquid storage unit;
and controlling the internal and external circulation working modes of the water aqua sewage treatment system to be switched, and discharging the liquid medicament and the clean water outwards when the external circulation working modes are switched.
9. The water aqua sewage treatment control method according to claim 7, further comprising:
continuously recording real-time data of the content and the liquid level height of the liquid medicament;
and setting a preset threshold according to the recorded data, and sending an alarm by the alarm module when the parameters exceed a preset range, and sending alarm information to the mobile terminal.
10. A method of using the water aqua sewage treatment control system of any one of claims 1 to 6, wherein the liquid storage unit is used as a concentrated water tank of a plurality of excrement collectors in a rail transit device or as an independent water tank for each of the excrement collectors, and the water aqua sewage treatment control system is used for water supply control of the concentrated water tank or the independent water tank.
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