235results about "Chemical variable control" patented technology

The invention discloses a method and system for accurately controlling the concentration of dissolved oxygen (DO) of a sewage treatment aeration unit, and the method comprises the steps: constructing a prediction model, and obtaining a model prediction value of the DO concentration at a current moment or a future moment according to the prediction model; calculating a current confidence coefficient; taking the current confidence coefficient as a weight coefficient, and carrying out weighted fusion calculation on a DO concentration measured value at the current moment and a DO concentration model prediction value to obtain a DO concentration fusion variable; the aeration air volume is adjusted or controlled with the purpose of minimizing the error between the DO concentration fusion variable and the DO concentration target value; the problem of overshoot oscillation caused by DO response lag in traditional control is solved, and a dynamic and accurate control solution is provided for the DO concentration of the aeration unit of the sewage plant.

The invention discloses a dissolved oxygen closed-loop regulation and control method used in a sewage treatment process. The method comprises the following steps: acquiring real-time dissolved oxygen concentration in a reaction tank through a distributed sensor array, and performing temperature compensation; an online water quality analyzer is used for collecting water inlet flow, chemical oxygen demand, ammonia nitrogen and water temperature to construct a comprehensive input feature vector; establishing a nonlinear dynamic mapping model based on a deep neural network, and outputting a target dissolved oxygen set value changing along with working conditions; an aeration adjusting instruction is generated by adopting a feedforward-feedback composite adaptive fuzzy PID control algorithm; dynamically adjusting the air volume of an air blower and the opening density of a partition aeration disc to match the aerobic rate of microorganisms; and the control performance is evaluated regularly, and a model parameter online optimization mechanism is triggered to continuously improve the setting precision. According to the method disclosed by the invention, the dissolved oxygen can be accurately controlled, so that the aeration energy consumption is reduced by not less than 18%, the control precision is within + / -0.3 mg / L, and the robustness, the automation level and the low-carbon operation capability of the system are remarkably improved.

The invention provides a hydrogen-rich water concentration dynamic adjustment method, and relates to the field of concentration adaptive adjustment, and the method comprises the following steps: S1, data acquisition; step S2, data preprocessing; s3, key influence factors are extracted; s4, acquiring the initial concentration of the hydrogen-rich water; and S5, obtaining the optimized concentration of the hydrogen-rich water: obtaining a dynamic concentration adjustment amount, an extreme environment adjustment amount and an implicit stress adjustment amount through reinforcement learning dynamic optimization, extreme environment adaptation and implicit stress early warning, and obtaining the final concentration of the hydrogen-rich water. According to the method, self-adaptive adjustment of the concentration of the hydrogen-rich water can be performed according to the growth state of the plant and environmental factors, the accuracy of the concentration of the applied hydrogen-rich water is ensured, and the problem that normal growth of the plant is affected due to too high or too low concentration of the hydrogen-rich water is avoided.

The invention discloses a closed-loop control system and method based on deep-sea ore raising pipe ore pulp concentration monitoring, and the system comprises a water surface support platform control center which is used for outputting a control strategy; the hydraulic ore injector is used for receiving the control strategy and carrying out self-adaptive adjustment according to the control strategy; wherein the water surface support platform control center comprises an intelligent control unit and a controller, and the intelligent control unit is used for collecting operation parameter data of the hydraulic ore injector, processing the operation parameter data and predicting in real time to obtain a solid phase volume concentration predicted value; the controller is used for receiving the solid phase volume concentration predicted value and determining a control strategy according to the solid phase volume concentration predicted value; the intelligent control unit comprises a data acquisition module, a data processing module and a prediction module; the concentration of ore pulp in the pipeline can be more accurately controlled through the system, and the system can better adapt to complex working conditions such as submarine topography and ore supply quantity fluctuation.

The invention discloses a denitration system capable of automatically adjusting an ammonia spraying strategy, which comprises a data sensing layer and an execution layer, the data sensing layer comprises a plurality of measuring devices arranged at an inlet and an outlet of an SCR (Selective Catalytic Reduction) reactor, the execution layer comprises a plurality of ammonia spraying grids arranged along the section of a flue in a partitioned manner, and each partition corresponds to an independent ammonia spraying branch pipe; an adjustable flow control valve is arranged on each ammonia spraying branch pipe; the control layer is in communication connection with the data sensing layer and the execution layer, and the control layer comprises an advanced controller and is configured to receive real-time data of the data sensing layer and optimize the real-time data on the basis of a preset denitration model and an optimization algorithm; calculating the distribution uniformity index of the NOx concentration at the outlet of the SCR reactor and the target ammonia gas flow required by each partition of the plurality of ammonia spraying grids; and the distributed PID controller is connected with the advanced controller and is configured to receive the target ammonia gas flow of each partition and generate a control signal to drive the corresponding flow control valve, and the total ammonia consumption can be remarkably reduced under the same denitration efficiency.

The invention discloses a water and fertilizer ratio control method and system, and relates to the technical field of water and fertilizer regulation, and the method comprises the steps: collecting the original concentration data of a plurality of liquid storage tanks at the moment and a set target mixing concentration value, and synchronously obtaining the valve opening data of a channel corresponding to each liquid storage tank; inputting the original concentration data and the valve opening data into an initial concentration prediction model to generate a predicted liquid outlet concentration value at the moment under the current mixing combination; acquiring a mixed liquid outlet concentration time sequence set and a valve opening time sequence set from the moment to the moment, and calculating and generating mixed response delay time and concentration inertia response time by combining the target mixed concentration value and the predicted liquid outlet concentration value; generating inertia offset data based on the mixed response lag time and the concentration inertia response time; through a water-fertilizer ratio control mechanism integrating concentration prediction and inertia compensation, dynamic and stable regulation and control of the mixed concentration are realized, and the control precision of the output concentration of the fertilizer liquid is improved.

The invention relates to an active oxygen concentration control method and a brain-computer interface implant accelerated life test system. The accelerated life test system is used for testing the electrochemical performance of a brain-computer interface implant by using a test solution. The method comprises the following steps: detecting a current feedback current corresponding to a current test solution; obtaining the current active oxygen concentration according to the current feedback current and a preset active oxygen concentration and current relation function; generating a filling parameter according to a concentration difference value between the current active oxygen concentration and a preset active oxygen concentration; and adding a hydrogen peroxide solution into the current test solution according to the filling parameters, so that the current test solution reaches the preset active oxygen concentration. According to the method, the active oxygen environment generated by immune reaction in a living body can be simulated through the test solution, the active oxygen concentration in the test solution can be precisely regulated and controlled, and the accuracy of the test result of the brain-computer interface implant is improved.

The invention provides a saline-alkali soil crop multi-water-source irrigation control method and system, and belongs to the technical field of agriculture, and the method comprises the steps: determining an irrigation water salinity target threshold value and a target total irrigation amount according to soil salinity data and crop physiological parameters; determining a water distribution strategy based on the salinity concentration data, wherein the water distribution strategy at least comprises irrigation priorities and collocation of different types of water sources; based on the target irrigation total amount, the irrigation water salinity target threshold value and the water distribution strategy, the target water taking amount of each type of water source is determined; and generating an irrigation control instruction according to the target water intake amount. According to soil salinity, crop types, crop physiological parameters and salinity concentration of multiple water sources, the irrigation water salinity target threshold value and the irrigation water total amount are dynamically and accurately determined; and meanwhile, a priority water distribution strategy is formulated, so that flexible allocation of irrigation among multiple water sources and fine management of the salinity concentration of crop irrigation water can be realized, and soil salinization and crop salinity stress are effectively avoided.

The invention discloses an in-vehicle oxygen content control method, device and equipment, a medium and a program product, and belongs to the technical field of vehicle intelligent control. The method comprises the following steps: in response to vehicle starting, acquiring navigation information of a vehicle, and determining a first oxygen content and a second oxygen content based on the navigation information; under the condition that the first oxygen content is smaller than the second oxygen content, a first difference value is determined, a first duration is determined based on the navigation information, and the first duration is the duration needed by the vehicle to arrive at a navigation destination from a navigation starting place; determining a corresponding oxygen content change rate from the navigation starting place to the navigation destination based on the first difference value and the first duration; and controlling oxygen content adjusting equipment of the vehicle to adjust the oxygen content in the vehicle according to the oxygen content change rate. According to the invention, passengers can be effectively helped to gradually adapt to the low-oxygen environment in the vehicle driving process.

The invention provides an intelligent gas supplementing method for GIS mixed gas, and relates to the technical field of operation and maintenance of high-voltage electrical equipment. According to the method, the pressure, temperature, humidity and mixed gas component concentration of the gas-insulated metal-enclosed switchgear are collected in real time through an intelligent sensor, and a temperature-pressure reference model is established for temperature compensation and leakage judgment; when the pressure deviation exceeds a threshold value, calculating the total amount of leaked gas and the gas supplementing demand quantity of each component, automatically supplementing gas according to a target proportion, and stopping gas supplementing after the pressure and the component concentration reach a target interval; the data of the whole gas supply process is used for model adaptive optimization, precise detection and intelligent gas supply of GIS mixed gas are realized, and the monitoring precision, the control reliability and the system self-optimization capability are improved.

Techniques for monitoring a pharmaceutical manufacturing process and making determinations regarding the release of radiopharmaceuticals to health care providers. A data processing system collects data across multiple batches of radiopharmaceuticals, across multiple entities, and / or across multiple stages of the manufacturing process, processes the data, and provides feedback to entities involved in the manufacturing process. In scenarios where quality assurance tests are conducted, data is collected from radiopharmaceutical products before they are shipped, and the data is analyzed to provide the recipients with an indication of whether the radiopharmaceutical products satisfy quality assurance standards. Techniques for analyzing information about a batch manufacturing process and, when a problem occurred during a manufacture of a batch, determining whether to continue to manufacture a next batch in time for delivering and administering to a patient. The detected problem may be investigated and remedied before or during the synthesis of the next batch.

The utility model discloses an anti-corrosion control system for a low-temperature methanol washing process, which comprises an alkali liquor adding tank used for storing and preparing alkali liquor with the concentration of 2%; the alkali liquor filling pump is connected to the alkali liquor dosing tank and is used for conveying the prepared 2% alkali liquor to an ammonia washing tower and a methanol-water separation tower in the production system; the alkali liquor dosing tank liquid level meter is arranged on the alkali liquor dosing tank and is used for monitoring the liquid level in the alkali liquor dosing tank in real time and sending out an alarm and interlocking protection signal; the DCS control system is used for automatically controlling the supplement amount of alkali liquor according to preset program setting and ensuring safe operation, the alkali liquor filling pump and the alkali liquor dosing tank liquid level meter are both connected with the DCS control system, 1-2% of alkali liquor is supplemented through online continuous operation, the PH value of condensate of the methanol-water separation tower and the ammonia washing tower is controlled to be 7-8, and therefore the problem of equipment corrosion is solved.

A method, an apparatus, and a computer program for controlling a process for manufacturing pulp, paper, or board. Dosing of a chemical agent into a fiber suspension during the process is automatically controlled by a rule engine. The rule engine receives a plurality of measurement values related to the process and maintains a plurality of rule sets including an active rule set. Each rule set defines how the dosing depends on the measurement values. The rule engine controls the dosing of the chemical agent based on the measurement values and the active rule set, records at least a part of the measurement values and the actual dosing amount of the chemical agent, and receives at least one rule set candidate. Based on the previous measurement values, the dosing of the chemical agent is simulated using the received at least one rule set candidate, and a simulation result for optimizing the performance of the chemical agent in the process is output.

The invention discloses an environment simulation human body metabolism cabin oxygen concentration control method which comprises the following steps: eluting oxygen through an oxygen scrubber system so as to reduce the oxygen concentration in air, and then inputting treated gas into a buffer cavity; the first gas pressure sensor collects gas pressure data in the pressurizing box so as to monitor the current gas pressure level; the low-oxygen air in the buffering cavity is pumped into the pressurizing box through the pressurizing pump, so that the air pressure is increased; the pressurization controller adjusts the pumping rate according to the air pressure difference to ensure that the air pressure reaches a preset value; the second gas pressure sensor collects gas pressure data of the metabolism cabin and compares the gas pressure data with the data of the first gas pressure sensor; if the air pressure meets the requirement, the low-oxygen air in the pressurizing box is input into the metabolism cabin; and the second gas pressure sensor continues to collect the gas pressure data in the metabolism cabin to ensure that the gas pressure is maintained at a proper level.

A misting device for aeroponically cultivating plants in a growing chamber provided with fluid in a water reservoir, comprising: an ultrasonic atomization transducer (UAT) configured to generate a misting spray in the presence of fluid; and a wicking means configured to transport fluid from the water reservoir by capillary action to the ultrasonic atomization transducer, when the lower end of the wicking means is disposed in contact with the water reservoir. Also disclosed is a growing system for aeroponically cultivating plants comprising: a growing chamber for containing the plants, and provided with a water reservoir containing fluid; and misting devices. The misting devices are oriented such that the respective misting sprays interact with each other to create an ultra-fine mist inside the growing chamber. In some aspects, the water reservoir may further comprise nanobubbles to maintain elevated dissolved oxygen levels and improve root-zone oxygenation.

Methods for blending transmix containing distillates such as diesel fuel into certified gasoline streams that can be burned in internal combustion engines without affecting the certification of the gasoline or the efficiency or operability of the engine.

A computer-implemented method includes a computer-implemented method can include receiving telematics data comprising information related to one or more driving behaviors of a user. The telematics data is received from one or more sensors located in a vehicle when the user is operating the vehicle. The method also can include determining one or more user characteristics of the user based at least on the telematics data. The method additionally can include selecting an advertisement from a plurality of advertisements based at least on the one or more user characteristics. Other embodiments are described.

A method (900) of controlling a concentration of a component of a three-component mixture obtained by mixing two fluid sources is provided. The method includes measuring (910) a fluid parameter of one of a first fluid comprising a first component and a third component of the three-component mixture, a second fluid comprising at least a second component of the three-component mixture, and the three-component mixture comprising the first component, the second component, and the third component. The method further includes determining (920) a concentration correlation parameter value based on the measured fluid parameter, measuring (930) a density of one of the first fluid, the second fluid, and the three-component mixture, and controlling (940) a concentration of one of the first component and the second component in the three-component mixture based on the measured density and concentration correlation parameter.

The invention relates to a gangue slurry concentration online detection and automatic adjustment method and system.The method comprises the steps that a plurality of detection adjustment points are arranged along a conveying pipeline at intervals, the collection period of a sensor array is controlled to be synchronous with the time when slurry flows through a fixed detection section, and continuous slurry segmented detection is achieved; the overall average concentration and the segregation coefficient are calculated according to the judgment result, adjustment is carried out on site according to the judgment result and the detection adjustment point, the dry material adding mechanism is driven by the flowing energy of the slurry to add dry materials, water is supplemented through the water injection unit, and intensity-adjustable mixing is carried out through the stirring unit driven by magnetic coupling; the corresponding system comprises a detection module and an adjustment execution module, and the adjustment execution module is integrated with a dry material adding unit, a water supplementing unit and a mixing unit. The problems that adjustment lags behind in long-distance conveying, objects are dislocated, and the segregation state is difficult to quantify are solved, and online detection and automatic adjustment of the slurry concentration are achieved.

The invention discloses an on-line automatic monitoring method and system for total alkalinity in water, and relates to the technical field of water quality on-line monitoring. When the current measuring state of the system is a starting state, a sampling unit is controlled to convey a target water sample to a mixed reaction unit based on a preset water sample flow; the reagent unit is controlled to convey a target reagent to the mixed reaction unit; dynamically adjusting the flow rate of the target reagent based on a proportional integral differential control strategy, so that the pH value of a mixed solution formed by mixing the target water sample and the target reagent in the mixed reaction unit fed back by the detection unit in real time is stabilized at a preset endpoint pH threshold value; and determining the total alkalinity of the target water sample based on the flow velocity of the target reagent when the pH value is stable, the concentration of the target reagent and the preset water sample flow. The pH value is stabilized at the titration end point by dynamically adjusting the reagent flow rate, the total alkalinity is calculated according to the reagent flow rate, the water sample flow rate and the reagent concentration during balance, continuous and rapid measurement can be realized, and the reagent consumption is low.

The invention discloses a PH value adjusting detector and an adjusting detection method, and belongs to the technical field of water sample detection equipment.The PH value adjusting detector comprises a box body, a mounting base is fixed to one end of the box body through bolts, an adjusting frame is rotationally connected to the surface of the mounting base, a control terminal is fixed to the surface of the adjusting frame through bolts, and an electrode box is arranged at the other end of the box body; an electrode assembly used for storing a plurality of sets of electrodes is installed in an inner cavity of the electrode box and connected with a control terminal through a signal line, a box door is slidably connected to the surface of the box body, an injection pump array module is installed in an inner cavity of the box body and comprises a module support, and the module support is fixed to an inner cavity of the box door through bolts. By means of the scheme, the situation that multiple sets of equipment or complex multi-way valve switching is needed in a multi-container scene is avoided, the detection equipment can be used in multiple containers at the same time, the occupied space is reduced, and wiring and maintenance burdens are reduced.

A proportioning device includes a proportioning machine with a temperature-compensating conductivity sensor, a controller, and pump actuator. A fluid circuit is engageable with the pump actuator, has connections for a source of water and one or more medicament concentrates, and includes a mixing container. The controller is configured to mix contents of the mixing container at a first time and to sample fluid from the mixing container, to pass the samples from the mixing container through the temperature-compensating conductivity sensor at different points in time as the fluid flows from the mixing container. The controller is further configured to mix contents of the mixing container a second time if the conductivities differ by a predefined magnitude.

The invention discloses a fishery oxygenation control optimization method based on a meta-heuristic algorithm, and belongs to the technical field of control optimization methods, and the method mainly comprises the following steps: S1, constructing a fishery oxygenation PID control system; s2, constructing an improved white sheep seat element heuristic algorithm module; s3, optimizing and setting parameters; and S4, parameter setting and effect optimization. According to the method, by introducing strategies such as interstellar distant symptoms, emotional outbreak and nebula aggregation, the global optimization and convergence capacity is remarkably enhanced, nearly-zero overshoot of dissolved oxygen adjustment is achieved through the PID controller set through the improved white sheep seat element heuristic algorithm, the response time can be effectively shortened, the steady-state error can approach zero, and the method is suitable for large-scale popularization and application. In this way, energy consumption and accumulative errors can be effectively reduced while rapid and accurate control is guaranteed, and the robustness of a fishery oxygenation PID control system can be remarkably improved.

The invention relates to the technical field of chip packaging, and provides a method for improving formic acid concentration control precision of a vacuum furnace, which comprises the following steps: a laser gas analyzer and a vacuum furnace pressure sensor are arranged in the vacuum furnace, a laser probe of the laser gas analyzer extends into a gas uniform mixing area in the vacuum furnace, and a thermocouple is arranged near the laser probe; the actual temperature T in the furnace is collected in real time; preset pressure is set for the formic acid barrel, a formic acid barrel pressure sensor collects pressure in the formic acid barrel in real time, and after the pressure is compared with the preset pressure, deviation is dynamically compensated by adjusting the opening degree of a nitrogen inlet valve; a mass flow meter and a proportional valve are installed on a main pipeline of an outlet of a formic acid barrel, after formic acid is output from the formic acid barrel, the flow is adjusted through the proportional valve, and then the actual flow is detected in real time through the mass flow meter; and the formic acid concentration deviation value delta C is obtained by setting the formic acid concentration Cset and the first correction concentration or the second correction concentration or the third correction concentration in the process. And the formic acid concentration control precision of the vacuum furnace is improved.

The invention relates to the technical field of resource collection, in particular to an injection well water and mother liquor topdressing linkage control method. The method comprises the following steps: acquiring a first sequence and a second sequence of measured clear water flow and predicted clear water flow corresponding to a first monitoring period; performing similarity analysis on the sequence trend of the first sequence and the sequence trend of the second sequence to obtain a prediction confidence value indicating the reliability degree of a prediction algorithm; performing adaptive correction on a first parameter value of a key parameter of the prediction algorithm according to the prediction confidence value to obtain a second parameter value; and regulating and controlling the clear water flow in the second monitoring period by using the prediction algorithm in the second monitoring period based on the second parameter value. According to the invention, the flow of the clear water can be accurately controlled by combining the real-time flow of the mother liquor based on the proportion requirement of the injection liquid formed by the clear water and the mother liquor, so that the actual injection ratio of the injection liquid formed by the clear water and the mother liquor is highly close to the ideal proportion.

The invention relates to a method for controlling the water conductivity of a high-voltage electrolytic cell test board, which is used for controlling the water conductivity of the high-voltage electrolytic cell test board, and the high-voltage electrolytic cell test board comprises a gas-liquid separation tank body for storing high-purity deionized water and creating conditions for controlling the conductivity; the ball valve is used for manually controlling the on-off of a deionized water path through a valve; the water pump is used for controlling circulating flow of deionized water; epoxy resin is arranged in the deionizing device; the one-way valve prevents work not according to the specified flow direction; the conductivity sensor is used for detecting a conductivity value in real time; the control logic is converted into'detection-active purification ', and the conductivity is reduced by directly and continuously removing conductive ions from the circulating water on line; and more direct and essential regulation and control of water quality core parameters are realized through conversion from'dilution 'to'removal'.

An active oxygen concentration control method and an active oxygen concentration control system using the control method are suitable for an electrochemical performance test using an electrode, and the control method comprises the following steps: collecting current electrochemical impedance spectroscopy data corresponding to a current test solution; determining a cut-off frequency according to the current electrochemical impedance spectroscopy data; dividing the current electrochemical impedance spectroscopy data into a concentration characteristic area with the frequency lower than the cut-off frequency and an electrode characteristic area with the frequency higher than the cut-off frequency; obtaining the current active oxygen concentration according to the current electrochemical impedance spectroscopy data in the concentration characteristic region; generating a control parameter at least according to a difference value between the current active oxygen concentration and a preset active oxygen concentration; and adding a concentration adjusting solution for adjusting the active oxygen concentration into the current test solution according to the control parameters, so that the active oxygen concentration in the current test solution reaches the preset active oxygen concentration.

The invention relates to the technical field of industrial control systems, in particular to a multi-data real-time acquisition control system for wheat wetting, which comprises a segmented water injection control unit used for controlling a water injection execution mechanism according to a segmented water injection proportioning scheme to inject water into wheat in a stirring or material turning state in a multi-time small-dose interval manner; and the wettability calculation unit is used for introducing the wettability index, collecting second data in the stage of segmented water injection and wheat wetting standing, analyzing the moisture distribution difference and the time change trend of the wheat at different positions according to the second data, and calculating the wettability index of the current batch of wheat according to a wettability evaluation model. The wettability index of the current batch of wheat is calculated according to the wettability evaluation model, the wettability index is compared with a preset wettability target threshold value through a threshold value judgment unit, a wheat wetting completion instruction is automatically output when the threshold value is reached, and an adjustment strategy is generated according to wettability index deviation and multi-parameter change when the threshold value is not reached.

In order to solve the problem of insufficient residual chlorine concentration control precision caused by manual measurement errors and a fixed adding mode in the prior art, the invention provides a chlorine disinfectant intelligent regulation and control system and method based on water body volume dynamic identification. Water depth data is detected in real time by combining a pressure sensor, an embedded control module generates an initial dosage according to a polymorphic volume calculation model for dynamically calculating the volume of a water body and a dosage acquisition model, and accurate dosage is executed by a peristaltic pump. A three-level control strategy is innovatively introduced into the system, and feed-forward calculation, residual chlorine feedback adjustment and load prediction functions are fused. Actual measurement shows that the fluctuation range of the residual chlorine concentration can be reduced to + / -0.1 ppm from + / -0.4 ppm of a traditional method, the adding efficiency is improved by 40% or above, and the method is particularly suitable for swimming pools and water storage pools with frequently-changed water levels.

The present disclosure provides a fertilization operation control method and apparatus, a medium, a device, and a system. The method comprises: acquiring a real-time concentration index parameter measured by a fertilizer solution measurement apparatus; on the basis of the real-time concentration index parameter, determining a target moment when a fertilizer solution concentration reaches the maximum concentration value; and upon determining the target moment when the fertilizer solution concentration reaches the maximum concentration value, adjusting the opening proportion of a control valve in real time on the basis of the real-time concentration index parameter and a target remaining fertilization duration corresponding to the target moment. The opening proportion of the control valve is automatically adjusted in real time on the basis of the real-time concentration index parameter and the target remaining fertilization duration, thereby reducing the number of manual adjustments of the control valve, and improving the convenience of use. By adjusting and optimizing a concentration attenuation rate in a fertilization process in real time, the fertilizer concentration changes more gently within different time periods, and the fertilization effect of the fertilizer solution is improved.