581results about "Level control" patented technology

The invention is suitable for the technical field of pump station intelligent control, and provides a pump station water level self-adaptive regulation and control method and system, and the method comprises the following steps: obtaining water level time sequence data, equipment state data and environment information data in real time; predicting a water level value of a future preset time window based on a physical mechanism prediction model according to the water level time sequence data, the equipment state data and the environment information data to obtain a first prediction value; based on a data-driven prediction model, according to the water level time sequence data, the equipment state data and the environment information data, predicting a water level value of a future preset time window to obtain a second prediction value; performing adaptive weighted fusion on the first predicted value and the second predicted value to obtain a comprehensive predicted value; and according to the comprehensive predicted value, carrying out self-adaptive regulation and control on the pump station water level. According to the invention, by constructing a hybrid prediction model based on a physical mechanism and data driving and introducing an adaptive weighted fusion mechanism, accurate short-term prediction and adaptive regulation and control of the future water level are realized.

The invention relates to the technical field of drainage control, in particular to a liquid level sensing drainage control method and system based on electronic and floating ball cooperative detection, and the method comprises the steps: fusing the angular displacement, capacitance value and acceleration disturbance data of a floating ball, and constructing a liquid level state observer; a dynamic compensation factor is introduced to strip liquid shaking interference, and an accurate liquid level reference value is obtained; a composite control vector is constructed based on the liquid level deviation and the change rate, and a drainage instruction is generated through analysis to control a valve to act; meanwhile, a self-adaptive feedback adjustment mechanism is established, observer parameters are dynamically calibrated through liquid level response residual errors, and the drifting error of an actuator is offset; according to the technical scheme, the robustness of drainage control can be remarkably improved.

The invention discloses an open channel high-flow interference water level control method based on storage compensation and improved PID coupling, and the method comprises the following steps: collecting channel operation parameters in real time, including current flow, water level fluctuation amplitude, predicted demand and on-way resistance coefficient distribution; dynamically constructing a channel damping effect model based on the on-way resistance coefficient distribution, calculating water level control response delay time, and generating a preposed adjustment coefficient; dynamically adjusting the actual participation volume according to the maximum effective storage volume and the maximum effective storage volume of the stagnant storage area; a compensation control quantity is generated by the input improved PID controller; and the compensation control quantity is executed to adjust the opening degree of the channel gate, and dynamic suppression of water level fluctuation is achieved. The water level stability and the control effect of the open channel can be improved.

The invention discloses a curve model filtering-based high-speed wire rotational flow pool liquid level correction control method and system, and relates to the technical field of steel production, and the method comprises the following steps: collecting a liquid level signal, and constructing a fixed curve model according to a process stage; a staged deviation zone is set according to the model, deviation is compared and calculated in real time, and abnormity judgment is carried out; performing previous normal value substitution, model prediction value substitution or triggering process alarm on the abnormal section according to the duration to obtain a substitution sequence; and performing composite filtering on the alternative sequence, and outputting a corrected liquid level for closed-loop control and visualization. Through four-stage fixed curve modeling and staged deviation band judgment, graded substitution is triggered by a pull-back amount, a phase drift amount and a logic consistency rate, and compound filtering closed-loop control is performed on a substitution sequence, so that accurate anomaly detection, low false alarm, continuous curve and stable control are realized.

The invention relates to the technical field of flotation machinery, and particularly discloses a high-precision automatic liquid level control system which comprises an intelligent controller, a PID controller, a laser distance measuring sensor, a floating ball and an intelligent valve positioner, the floating ball floats on the upper surface of liquid in a flotation tank, and the upper end of the floating ball is connected with a position feedback plate; the laser distance measuring sensor is used for measuring the position of the position feedback plate to obtain an actual liquid level and transmitting the actual liquid level data to the PID controller; the PID controller is used for carrying out PID operation on the actual liquid level and the set liquid level and outputting a signal to the intelligent valve positioner, and the intelligent valve positioner is used for controlling the air cylinder to move and opening or closing the valve through the linkage mechanism and feeding back execution parameters to the intelligent controller, so that the liquid level is automatically adjusted on line.

The invention provides an automatic dosing adjustment method, device and system and a storage medium, and relates to the technical field of automatic control. The automatic dosing adjusting device comprises a flow measuring barrel, a processor, an automatic adjusting valve, a pneumatic pipe clamp valve and a liquid level sensor; the flow measuring barrel is connected in series to the downstream of the automatic regulating valve; the pneumatic pipe clamp valve is connected to the downstream of the flow measuring barrel in series. According to the structure, through an indirect metering mode of the flow measuring barrel and an unobstructed channel of the pneumatic pipe clamp valve, the problem of core blockage of a traditional dosing system in measurement and control points is integrally solved. The high-reliability hardware is integrated into a closed-loop automatic control system by a processor, and an automatic regulating valve can be instructed to perform precise regulation according to real-time and accurate flow data, so that stable and accurate automatic dosing is realized, and the system reliability and the medicament utilization efficiency are remarkably improved.

The application discloses a kind of constant humidity air conditioner humidifier liquid level control device and method, belong to air conditioning and environmental control technical field.The liquid level control device includes perception and feedback module, execution and control module, support and water inlet and outlet module.The beneficial effects of the present application include: the automatic switching of humidifier water supply valve open\close state is realized, so that the dynamic accurate control of humidifier water tank liquid level under high temperature and high humidity condition is carried out;The scheme does not depend on complex electronic detection and control circuit, there is no risk of water vapor diffusion penetration to circuit hardware, can cope with mild scale influence, parts cooperate smoothly, overall structure is stable and reliable, water supply dynamic response is sensitive, boiling interference resistance is strong, suitable for long-term stable operation under high temperature and high humidity environment.

The invention discloses a water level automatic control device for a hydraulic model test, which comprises control units respectively arranged at the water level upstream and the water level downstream of a hydraulic model water tank, and is characterized in that each control unit comprises a door mounting frame, a gate, a threaded rotating rod, a height sensor, a control box, a water level meter and a track, the gate is rotationally connected with a threaded rotating rod, the threaded rotating rod penetrates through the mounting plate and is connected with the electric knob, the height sensor and the control box are mounted on the mounting plate, and the control box is connected with the water level meter through a signal transmission line. The control method comprises the following steps: S1, equipment installation; s2, debugging the device; s3, creating a test item; s4, water level closed-loop control; s5, confirming the water level; s6, collecting and recording data; and S7, completing test cycle monitoring. By adjusting the opening degree of the gate, it is ensured that upstream and downstream water levels are stabilized within the set range, and the problems that in the prior art, manual water level control is low in efficiency and poor in precision in the low-pressure environment are solved.

A computer-implemented method includes obtaining plant steam data regarding a plurality of steam traps of an industrial plant implementing a steam distribution network during operation of the industrial plant. A database is developed using the plant steam data and used to develop a mathematical correlation that describes a condensation removal rate as a function of parameters including a type of steam trap, temperature, pressure, and a steam volumetric flow rate. A digital twin of the steam distribution network is developed using a machine-learning model and the mathematical correlation, where the digital twin represents all steam straps of the steam distribution network. During operation of the industrial plant, a trap condition of a steam trap of the digital twin is estimated based on a set of plant steam data regarding the plurality of steam traps of the industrial plant.

The embodiment of the invention provides an anti-overflow control method of a distributor, a controller, the distributor and a storage medium, the distributor is provided with an ingredient output port and a water box, and the water box is provided with a liquid level sensor; then, the first liquid level height of the water box is detected through a liquid level sensor; according to the first liquid level height, a target filling mode and target anti-overflow protection are started, the target filling mode is an automatic filling mode and / or a manual filling mode, and the target anti-overflow protection is automatic filling anti-overflow protection and / or manual filling anti-overflow protection. The liquid level sensor is arranged in the water box, the liquid level height of the water box can be detected through the liquid level sensor so that the liquid level state of the water box can be judged, the target filling mode and target anti-overflow protection can be set according to the liquid level state of the water box, and therefore the situation that water overflows to the ground is reduced, and meanwhile the water filling efficiency is improved. The situation that a user cannot receive water after the overflow water box is full of water is avoided, and the use experience of the user is improved.

The invention relates to the technical field of nuclear power plant automatic control and fluid regulation, in particular to a nuclear power plant condensation water regulating valve automatic control system which comprises a sensor data acquisition and synchronization module which acquires and synchronizes parameters in a nuclear power plant condensation water system; the reinforcement learning control module reads parameters of the sensor data acquisition and synchronization module, and generates a regulating valve control strategy by using a reinforcement learning algorithm; the real-time prediction and control decision module controls and predicts the opening degree of the condensed water regulating valve according to the regulating strategy of the reinforcement learning control module; and the anomaly detection and safety protection module reads the parameters acquired by the data acquisition and synchronization module, monitors the parameters and gives an alarm according to an anomaly monitoring result. According to the system, valve oscillation and unreasonable adjustment in a traditional method can be avoided while a valve adjustment strategy is learned and optimized in real time, and the precision and stability of condensed water flow adjustment are improved.

The invention relates to the technical field of gate opening control, in particular to a gate opening control method and system based on a machine learning algorithm, a dual-channel LSTM (Long Short Term Memory) prediction model unit adopts dual-channel processing, processes meteorological modal data and hydrological modal data respectively, performs corresponding feature extraction, and adopts an attention mechanism, so as to achieve the control of the gate opening. The influence weight ratio of the meteorological factors and the hydrological factors is dynamically adjusted, a subsequent prediction result is more adaptive to an actual application scene, and the prediction precision is further improved; in the subsequent control instruction generation, an instruction rolling optimization generation adjustment algorithm is adopted, and the scene adaptability is further improved, so that the actual application scene is met in the subsequent control adjustment of the gate opening degree; through three core technologies of double-channel processing, attention fusion and rolling optimization, the industrial problems of meteorological-hydrological response disjunction, insufficient long-time-domain prediction precision and the like in water conservancy control are solved, and reliable technical support is provided for intelligent water conservancy construction.

The invention relates to the technical field of drainage engineering, and particularly discloses a multi-well linkage drainage control system and method, and the system comprises a distributed monitoring unit, a core control unit, a linkage execution unit, and a 5G + LoRa dual-mode data interaction unit. The distributed monitoring unit collects water level, soil seepage, salinity and other multi-dimensional data, the core control unit achieves data preprocessing, water level evaluation, drainage priority calculation and dynamic power adjustment through a built-in multi-well linkage regulation and control algorithm, and the weight coefficient can be dynamically adjusted according to the soil salt content. Regional water level balance and salinity cooperative control are achieved through circulation monitoring, cooperative regulation and control, emergency drainage and a power compensation mechanism. The system solves the problems of lack of linkage, single monitoring and low control precision of a traditional system, is stable in communication, is energy-saving and efficient, and is suitable for agricultural, urban and industrial drainage scenes.

A ground embedded imaging device includes a barrel housing unit, an electronic element unit and an automatic draining unit. The barrel housing unit has a water collecting chamber, a translucent window portion at an upper end of the barrel housing unit, a water conducting hole to conduct water from outside to the water collecting chamber, and a water deflecting recess portion in spatial communication with the water conducting hole and disposed below the ground surface. The electronic element unit includes an imaging module oriented toward the window portion. The automatic draining unit includes a water expelling driver which is actuated to expel water from the water collecting chamber. Water is prevented from accumulating around the window portion so that the imaging module operates correctly.

The invention relates to the field of sewage treatment, and provides an automatic start-stop regulation and control method for multiple sets of water treatment equipment, which comprises the following steps: calculating the number of fixed-frequency lifting pumps needing to be regulated in k cycles; calculating the frequency of the variable frequency lift pump in the k period by using a BP-pid algorithm, and calculating a weighting coefficient of the k + 1 period; according to the frequency of the variable-frequency lifting pump, the operation time of the variable-frequency lifting pump and the actual liquid level of the storage pond, the accurate number of the fixed-frequency lifting pumps needing to be adjusted in the k period is obtained through correction; and the number of the fixed-frequency lifting pumps needing to operate in the k period is determined. The problem that in the prior art, starting and stopping of the lifting pump are controlled through segmented liquid levels, so that acceleration equipment losses are caused is solved, and the intelligent control efficiency of the storage pond lifting pump system is remarkably improved.

The invention discloses a pressurized water reactor steam generator liquid level control method and system, and belongs to the technical field of nuclear power station control. The method comprises the steps that a liquid level set value and a measured value of the steam generator are obtained, and deviation is calculated; inputting the set value, the measured value, the deviation and the bias constant into a preset BP neural network; the network dynamically outputs three coefficients of proportion, integral and differential through forward propagation to serve as real-time parameters of a PID (Proportion Integration Differentiation) controller; the PID controller calculates and outputs a water supply flow demand value, and a water supply valve is adjusted after conversion; and calculating a root-mean-square error of liquid level control as a loss function, and updating the weight of the neural network on line by using the new liquid level deviation through a back propagation algorithm to realize adaptive optimization of PID parameters. According to the invention, the self-learning ability of the BP neural network is combined with the reliability of PID control, the control quality and stability of the liquid level of the steam generator under various power levels are significantly improved, the system can be deployed in a power plant DCS through modular packaging, and the engineering practicability is high.

Disclosed is a method for whole filling process supervision of smart gas and an IoT system, implemented by a gas company management platform of the IoT system, comprising: obtaining monitoring data of a gas filling container; obtaining usage information of the gas filling container; determining a usage index of the gas filling container, and sending the usage index to a gas user platform; determining a target gas user and sending container replacement information to the target gas user, and sending a parameter adjustment instruction to an electronic monitoring device of the gas filling container corresponding to the target gas user; determining whether the monitoring data and / or the usage information satisfy a preset data condition; and in response to determining that the monitoring data and / or the usage information satisfy the preset data condition, adjusting the target gas user, interacting with a public user platform, and displaying an adjusted target gas user.

The invention discloses an oil tank liquid level real-time monitoring method and system based on an intelligent sensor, and the method comprises the following steps: S1, collecting and preprocessing oil tank liquid level data, and constructing a liquid level time sequence; s2, extracting a time sequence fragment in a sliding manner, analyzing a trend, calculating a change rate and an amplitude, and generating a trend feature vector; s3, constructing a prediction model for reasoning, performing transformation, gating and mapping on a result, and generating a trend prediction and abnormal probability sequence; s4, fusing the sequence to calculate a mean value and a standard deviation, and constructing a threshold value based on Z-score to identify an abnormal time step; s5, calculating an error between a predicted value and a reference value, and dynamically adjusting PID parameters to generate a control instruction; and S6, comparing predicted data with real-time data before control, and updating model parameters according to deviation. According to the method, intelligent sensor collection, BEMD decomposition, deep learning trend prediction and a PID control feedback mechanism are fused, and the prediction precision and the regulation response capability of oil tank liquid level monitoring are improved.

The invention discloses a power station water level prediction control method, system and equipment based on model order reduction and a medium, and relates to the technical field of hydropower station engineering automatic regulation and control. The method comprises the following steps: constructing a river channel one-dimensional hydrodynamic model, performing single river channel roughness coefficient calibration, and determining different operation conditions and corresponding constant flow states; when the river channel one-dimensional hydrodynamic model is in a constant flow state, applying a flow sudden change disturbance to perform parameter identification, and establishing an ID model and an IDZ model under different operation conditions; constructing a power station MPC model, and embedding the ID model as a prediction part into the power station MPC model to obtain a power station ID-MPC open-loop control model; and the IDZ model is coupled with the power station ID-MPC open-loop control model, and the output of the power station ID-MPC open-loop control model is transmitted to the IDZ model for water level deviation control. According to the invention, the control precision and real-time performance can be effectively improved.

The application relates to the technical field of drainage control, in particular to a liquid level sensing drainage control method and system based on cooperation of an electronic device and a float ball, which comprises the following steps: fusing float ball angular displacement, capacitance value and acceleration disturbance data to construct a liquid level state observer; introducing a dynamic compensation factor to strip liquid sloshing interference and obtain an accurate liquid level reference value; constructing a composite control vector based on liquid level deviation and change rate to analyze and generate a drainage instruction to control a valve action; and simultaneously establishing an adaptive feedback adjustment mechanism to dynamically calibrate observer parameters by using liquid level response residual error and offset actuator drift error; and the technical scheme can significantly improve the robustness of drainage control.

A brine generation system having a tank for containing crystalline salt, a level control system regulating a water supply to the tank which maintains a desired fluid level within the tank, and a freeze protection system with a duct peripherally disposed on an interior tank sidewall, the duct defining an interior space into which is placed a thermostatically controlled heating element. A portion of the duct extends to the outside of the tank enabling access to the interior space such that the heating element may be replaced without disturbing any external tank insulation or emptying the tank contents.

The application provides a liquid level telemetry and valve remote control device of a ship, comprising: a plurality of liquid measurement valve control modules, each of the plurality of liquid measurement valve control modules comprising a plurality of liquid level telemetry sensors and a plurality of remote control valves; a valve control box; a plurality of distribution boxes, the plurality of distribution boxes being arranged one by one corresponding to the plurality of liquid measurement valve control modules, the distribution boxes being arranged adjacent to the corresponding liquid measurement valve control modules, and each of the plurality of distribution boxes being connected to the valve control box, wherein each of the distribution boxes is connected to the liquid level telemetry sensors and the remote control valves in the corresponding liquid measurement valve control module. The liquid level telemetry and valve remote control device of the ship provided by the application does not require each of the liquid level telemetry sensors and the remote control valves to be separately connected to the valve control box, thereby reducing the amount of wiring cables required to be used between the valve control box, the remote control valves and the liquid level telemetry sensors, and also reducing the laying difficulty of the wiring cables, so as to reduce the manufacturing cost of the ship.

This invention relates to the field of water treatment and aquatic ecosystem restoration technology, and particularly to a closed-loop method for restoring submerged communities using a water level pulse with dual constraints of light compensation and resuspension. The method calculates the light compensation depth based on aquatic environmental parameters and determines the target water level zone. It sequentially executes a low-water-level planting window setting, sediment endogenous source control procedures, and a gradual rise acclimatization stage, dynamically updating aquatic environmental parameters to correct the target water level zone. When water quality purification characterization parameters deviate from the purification control target threshold set and / or algal risk increases, a water level pulse is superimposed on the baseline operating water level to form a water level curve, and boundary constraints and protection are implemented using a weighted index of resuspension and endogenous release risks. The pulse parameters are adjusted according to a rolling cycle, and the water level is switched to maintain the purification maintenance stage to achieve full-cycle operation control. The method proposed in this invention can stably improve transparency, suppress algal blooms, and promote the restoration of submerged communities under high disturbance and high endogenous source conditions.

The invention relates to the technical field of fire-fighting management and control, and particularly discloses a water level detection and fire-fighting identification method and system based on automatic control, and the method comprises the steps: obtaining the temperature and acoustic multi-modal data of a fire-fighting pipe network, building a pipeline temperature gradient model, and predicting the temperature distribution of each section through combining the environment and the medium temperature; and extracting ice crystal nucleation and fluid anomaly characteristics at low temperature. Based on the temperature gradient, the acoustic spectrum, the water level fluctuation rate and historical data, a multi-parameter fusion congelation risk assessment model is constructed, and risk indexes are calculated and graded; constructing a congelation risk and firelight early warning linkage control strategy, and adaptively adjusting a firelight detector threshold value and a sampling frequency according to a risk level; when the risk reaches an early warning value, partitioned heating is implemented, a temperature recovery curve and water level stability are collected in real time as feedback, model iterative optimization and closed-loop control are achieved, early warning accuracy is improved, energy consumption is reduced, and reliable operation of a fire fighting system is guaranteed.

The utility model relates to the technical field of water extinction coefficient measurement, in particular to an automatic liquid level control device for liquid extinction coefficient measurement, which comprises a measuring tube, an upper communication box and a lower communication box, and the upper communication box and the lower communication box are respectively connected to the top and the bottom of the measuring tube. The lower communication box is provided with a light through hole, a water inlet hole and a first drainage hole, the inner side of the light through hole is connected with a lower window piece, the outer side of the light through hole is provided with a light source, and the water inlet hole is provided with a water inlet assembly; a water drainage assembly is arranged outside the first water drainage hole, the second water drainage hole, the third water drainage hole and the fourth water drainage hole, a measuring hole is formed in the upper communication box, an upper window piece is connected to the inner side of the measuring hole, a shutter and an optical fiber are installed on the outer side of the measuring hole, and the optical fiber is externally connected with a spectrograph. The liquid level control device has the effects of improving the liquid level control precision during liquid extinction coefficient measurement and ensuring the accuracy and the stability of a liquid extinction coefficient measurement result.

The application discloses a continuous water inlet device and control method for expressway service area sewage treatment, and belongs to the technical field of sewage treatment. The continuous water inlet control method for expressway service area sewage treatment comprises the following steps: service area water inlet water quality and quantity detection, obtaining sewage water quality and quantity information of a service area to be treated, wherein the information comprises the concentration of various pollutants and daily water inlet quantity of daily and holiday; adjusting pool design reconstruction; tail water quality information collection; reflux sewage treatment process information analysis; double-pump control and water inlet and outlet linkage information analysis; the application realizes linkage of water pump one, water pump two, reflux pump one and reflux pump two, so that the sewage treatment device can obtain continuous and uniform water inlet during operation, treatment facilities are usually designed to achieve the best treatment effect within a certain water inlet load range, and the continuous and uniform water inlet can help maintain stable operation of the treatment facilities.

The present application relates to water bag stacking adjustment control technical field, especially for water bag stacking preloading load liquid level automatic adjustment control system and method, including water bag bottom end both sides evenly spaced distribution and fixedly connected sensing cylinder and water bag upper side array distribution and with water bag inside communication first bag, sensing cylinder in the application can according to the change of water depth, then make effective action accordingly, the upper water of water deep side is occupied by gas, the overall density of the place is reduced, thereby reducing the water pressure load force of water bag on the soft foundation surface of the position, after occupation, the first bag arranged at the top of the water bag carries out space compensation, because the second bag can swell and rise under the action of buoyancy when being inflated, the inlet of the first bag at the position is blocked by the pressure plate, the water squeezed out by the water deep side because of occupation enters the first bag except the position, that is, the liquid level of the remaining position is raised, the load force of the soft foundation surface except the position is increased.

The present application relates to liquid distribution system. More specifically, the present application relates to a device for controlled discharge of liquid, comprising: an extendable pipe having a bottom end and a top end being extendable from a collapsed position to an extended position; a floating plate connected to the top end of the pipe and having an opening in fluid communication with the pipe and the bottom end for receiving and for discharging said liquid, the floating plate being configured to float on the surface of the liquid, and the extendable pipe is configured to extend to the extended position when an increasing level of liquid forces the plate to rise up until the extended position is reached; wherein at said extended position, the floating plate is configured to fill with liquid and collapse to reach the collapsed position whereat the liquid flows inside the pipe and through the bottom end for discharging the liquid.

The application provides a dam centrifugal test model reservoir water level controllable adjusting device and method, relates to the geotechnical centrifugal model test technical field, and includes a model box. An overburden dam model is arranged at one end in the model box. A placeholder box is arranged at the end away from the overburden dam model in the model box. A guide positioning mechanism is fixedly installed at the bottom end of the model box. When the hydraulic actuator is started and frequently lifted or lowered, the generated vibration is transmitted to the elastic connecting mechanism. The support of the first support platform in the elastic connecting mechanism is matched with the second buffer platform, the second buffer spring and the elastic damping of the movable connecting rod, and the fine adjustment of the third working platform and the precision guide rail pair. The high-frequency vibration transmitted by the hydraulic actuator under high g value is significantly inhibited, water level fluctuation distortion is avoided, and the reliability of test data is improved.