1223 results about "Liquid level measurement" patented technology

The invention relates to the technical field of industrial automation control, in particular to a container liquid level measurement method, system and equipment of a pressure sensor and a medium, and provides a method for eliminating gas phase pressure influence based on a double-sensor differential measurement mechanism and dynamically correcting liquid density and sensor drift errors in combination with a temperature compensation model. The temperature data are linked in real time through a three-dimensional compensation function, density calculation and drift correction are synchronously adjusted, and multi-parameter dynamic decoupling and self-adaptive compensation are achieved; a collaborative measurement mechanism is adopted to integrate bottom and top sensor data, and a built-in temperature probe and a preset threshold are combined to complete multi-source signal fusion and compensation calculation; a dynamic calibration method is designed, and system errors are eliminated through reference pressure point calibration and structure coefficient correction; constructing a closed-loop signal processing flow, and integrating high-precision analog-to-digital conversion, digital filtering and real-time algorithm to output a compensated liquid level value; the method improves the measurement precision and stability, and is suitable for temperature change, gas phase pressure fluctuation and multi-medium scenes.

The invention belongs to the technical field of liquid level measurement and industrial process control, and particularly relates to a radar liquid level meter system fusing an adaptive algorithm and multi-modal data. Comprising a data acquisition unit, a signal acquisition and preprocessing unit, a signal denoising and optimizing unit, a data fusion and anomaly detection unit, a self-adaptive calibration and drift compensation unit and a display and alarm terminal. The system has the advantages that the radar liquid level meter, the auxiliary sensor, signal processing, data fusion, anomaly detection, self-adaptive calibration, drift compensation and other technical means are organically combined, and the system can achieve high-precision and real-time monitoring of the liquid level under the complex working condition.

The invention relates to the technical field of industrial process measurement, and discloses a high-precision liquid level measurement anti-interference calibration method, which comprises the following steps of: 1, synchronously acquiring a liquid level signal, a mechanical vibration signal, an electromagnetic field intensity signal and a temperature distribution signal through a multi-mode sensor array to form multi-physical field data; 2, constructing a hypergraph adjacency tensor based on the coupling relationship of the multi-physics field data, and generating a Laplacian matrix constraint; step 3, performing CP tensor decomposition with hypergraph constraint on an original signal tensor formed by the multi-physical field data, and separating a liquid level signal kernel from an interference kernel; and step 4, inputting the decomposed signal kernel characteristics and the sensor impedance parameters into a depth deterministic strategy gradient algorithm to realize hardware acceleration of a processing flow. A multi-physics field coupling relation is constructed through a hypergraph adjacency tensor and a Laplacian matrix, and the limitation of a traditional binary correlation model is broken through.

The invention discloses a magnetostriction liquid level meter temperature compensation method and system based on a support vector machine. The method comprises the steps that the currently captured original pulse number is obtained through a magnetostriction liquid level meter; the current environment temperature is detected in real time through a high-precision temperature sensor in the magnetostrictive liquid level meter; taking the original pulse number and the current environment temperature as input features, sending the input features to a pre-trained support vector machine regression model (SVM), and outputting a displacement error prediction value in the current temperature environment; and correcting the original measurement result according to the error prediction value to obtain a real pulse measurement value after temperature compensation. The system comprises a time-to-digital conversion chip, a temperature chip temperature measurement module, a support vector machine reasoning module, a pulse compensation module and a distance calculation module. According to the method, nonlinear modeling can be carried out on measurement errors caused by environment temperature changes, so that the liquid level measurement result is dynamically corrected, and the overall robustness and precision of a measurement system are improved.

The invention relates to the technical field of liquid level measurement, and particularly discloses a liquid level measuring instrument for a low-temperature container and a using method, and the liquid level measuring instrument comprises a gas phase pipe, a liquid phase pipe and a liquid level meter; the part, extending into the low-temperature container, of the liquid phase pipe comprises a straight pipe section arranged in an inner tank of the low-temperature container; the straight pipe section comprises a hole opening section provided with a first exhaust hole and a light pipe section without a hole, and the end of the light pipe section is a closed end. The drainage cylinder is arranged at the top of the side, close to the opening section, of the light pipe section, and the drainage cylinder is communicated with the light pipe section; the flow guide part is arranged in the flow guide cylinder, the width of the flow guide part is gradually increased from bottom to top, and a flow guide cavity is formed between the flow guide part and the flow guide cylinder; the sealing section is arranged on the side wall of the inner tank in a penetrating manner; one end of the sealing section is connected with the tapping section; the U-shaped air sealing section is arranged in the vacuum interlayer of the low-temperature container, one end is connected with the other end of the sealing section, and the other end is connected with the heating section. The accuracy and the stability of the differential pressure type liquid level instrument used for liquid level measurement of the low-temperature container can be improved.

The invention discloses a motorcycle instrument fuel quantity display calibration method based on multi-sensor fusion. The method comprises the following steps: acquiring a data signal of a sensor, fusing and preprocessing data, calculating a fuel consumption rate by adopting a dynamic self-adaptive fuel consumption model, predicting the remaining fuel quantity, and dynamically adjusting the remaining mileage; and self-adaptive calibration: based on a dynamic self-adaptive fuel consumption model, displaying the remaining fuel quantity, the instantaneous fuel consumption, the average fuel consumption and the estimated endurance mileage by an instrument, and displaying a historical fuel consumption trend in a thermodynamic diagram form. The method has the advantages that multi-sensor data and dynamic environment compensation are fused, the liquid level measurement error is smaller than + / -1%, the endurance prediction error is smaller than + / -5%, the overall oil mass calculation precision is improved to 98%, the DAFCM model supports millisecond-level response, the method dynamically adapts to complex driving scenes, resource occupation is low, the method is suitable for a low-end vehicle-mounted controller, and the method is suitable for large-scale popularization and application. And reliable data support is provided for intelligent travel.

The invention discloses a radar wave measurement method and system for the liquid level of a storage tank, and relates to the technical field of liquid level measurement. The radar wave measurement method for the liquid level of the storage tank comprises the following steps: acquiring radar echo signal data of the storage tank in a set measurement period, and preprocessing the radar echo signal data; based on a pre-trained liquid level identification deep learning model, performing prediction analysis on the radar echo signal data to obtain a liquid level feature set of the storage tank; and acquiring liquid level control parameters of the storage tank, analyzing liquid level control driving indexes of the storage tank in combination with the corresponding liquid level feature set, and controlling the start-stop state of a water pump of the storage tank based on the liquid level control driving indexes. Multi-dimensional modeling is carried out on radar echo signal data in a continuous time period, the limitation that a traditional liquid level measurement method depends on echo signals at a single moment to carry out height judgment is broken through, and the method is particularly suitable for industrial liquid level monitoring requirements with high disturbance and high precision requirements.

The invention relates to the technical field of liquid level meters, in particular to a liquid level measuring instrument for a low-temperature and high-pressure container, and aims to solve the problem that when the liquid level of the low-temperature and high-pressure container is measured, measured data are easy to be wrong due to the influence of the pressure and temperature of a medium. Comprising a pressure measuring container; the liquid level meter comprises a gas phase pipe, a liquid phase pipe and a differential pressure transmitter, and one end of the gas phase pipe and one end of the liquid phase pipe are both communicated with the pressure measuring container; a gas-liquid drainage assembly; the differential pressure transmitter is used for measuring the liquid level in the pressure measuring container through the pressure of gas or liquid in the gas phase pipe and the liquid phase pipe, and the gas-liquid drainage assembly is used for separating gas and liquid in the gas phase pipe or the liquid phase pipe. The gas in the low-temperature and high-pressure container enters the gas phase pipe, the liquid in the low-temperature and high-pressure container enters the liquid phase pipe, the gas-liquid drainage assembly can treat media at the gas phase pipe and the liquid phase pipe respectively, and the problem that the media directly enter the gas phase pipe or the liquid phase pipe, and measurement data are unstable due to factors such as pressure fluctuation is solved.

The invention relates to the technical field of liquid level detection, in particular to a method for eliminating a false liquid level of a urea hydrolyzer, which comprises the following steps: S1, acquiring a liquid level sensor signal, a pressure sensor signal, a temperature sensor signal and an ultrasonic reflection signal of the urea hydrolyzer in real time; s2, performing weighted fusion to generate fused liquid level characteristic parameters; s3, identifying false liquid level characteristics caused by foam layer coverage or steam interference; s4, generating a calibration liquid level value according to the false liquid level characteristics; and S5, comparing the calibrated liquid level value with a preset liquid level-pressure-temperature relation model, and outputting a real liquid level value. According to the invention, by fusing various sensor signals in real time, dynamically adjusting the parameters of the liquid level sensor and combining the liquid level-pressure-temperature relation model, false liquid level interference is accurately eliminated, the accuracy and reliability of liquid level measurement are improved, meanwhile, the equipment safety is ensured, and abnormal operation caused by false liquid level signals is prevented.

The invention discloses a single ultrasonic mud liquid level measuring system and method based on machine learning. The system comprises an ultrasonic liquid level sensor, a signal processing unit, a machine learning module, a physical model constraint module, a calculation unit, a display unit and a continuous learning and online updating module. According to the method, the accuracy of mud liquid level measurement in petroleum drilling and the robustness of the system are improved, more accurate and stable liquid level data can be provided in a complex drilling environment by integrating multiple machine learning models and applying a model integration technology, the defects that a traditional single model is large in dependence and prone to being disturbed are overcome, and the method is suitable for popularization and application. The reliability of prediction data is improved, and the safety and effectiveness of drilling operation are ensured.

The invention relates to the technical field of liquid level measurement, in particular to a real-time energy and LSTM (Long Short Term Memory) oil well working fluid level depth measurement method, which comprises the following steps of: acquiring and classifying real-time data by adopting an energy monitoring device, analyzing and screening the data according to a consumption threshold value, marking and generating an energy state classification result. According to the invention, real-time measurement and dynamic prediction are carried out on the oil well liquid level depth through the long and short term memory artificial neural network, complex dynamic data of the oil well liquid level are effectively processed, screening and difference analysis of a liquid level change area are realized through accumulation calculation and segmentation processing, and liquid level depth spatial features are generated. The accuracy and real-time performance of liquid level depth prediction are improved, through the space-time diagram convolutional network, the space-time correlation characteristics of the liquid level depth are matched with actual operation data, the problems of accurate judgment of the liquid level change trend and dynamic model generation are solved, and the overall operation efficiency and safety of an oil well are optimized.

The invention relates to the technical field of liquid ammonia liquid level meters, in particular to a liquid ammonia liquid level meter capable of automatically cleaning impurities and a method thereof.The liquid ammonia liquid level meter comprises a sampling pipe and a floating ball liquid level sensor installed in the sampling pipe, the floating ball liquid level sensor is used for detecting the position of a floating ball and the height of the liquid level, and the floating ball liquid level sensor transmits detection data to a processor; a heat tracing pipe is arranged on the outer wall of the sampling pipe, a flow meter for introducing inert gas is arranged at the upper end of the sampling pipe, and a blow-down valve is arranged at the lower end of the sampling pipe. Whether the floating ball is stuck or not is judged by automatically detecting the position of the floating ball, then cleaning is achieved by heating and nitrogen introduction for purging under the condition that the floating ball is stuck, and due to the integrated automation technology, the accuracy of liquid level measurement of liquid ammonia and the stability of the system are remarkably improved. According to the device, impurities attached to the liquid level meter can be removed in time, the floating ball is prevented from being jammed, and accuracy and reliability of liquid level measurement data are ensured.

The invention relates to the technical field of detection, particularly discloses an ultrasonic guided wave non-contact accurate liquid level measurement method for a high-temperature closed container, and aims at solving the problems that in the prior art, measurement precision is low and interference is prone to occurring in a high-temperature environment. Effective signals are extracted through a self-adaptive interference suppression algorithm, the liquid level is calculated through multi-source data fusion, and an intelligent calibration and self-diagnosis system and a machine learning prediction model are arranged. Experiments show that the measurement error of the method can be controlled within + / -3cm, and the method is remarkably superior to a traditional method and is suitable for accurate liquid level measurement of high-temperature closed containers in the industries of chemical engineering, electric power and the like.

The invention relates to the technical field of liquid level meters, and provides a glass plate liquid level meter and a liquid level measuring method.The glass plate liquid level meter comprises an outer cover, a main pipe and a glass plate, and observation holes are formed in the peripheral side of the outer cover; the main pipe penetrates through and is fixedly arranged in the outer cover, and a communicating groove is formed in the peripheral side of the main pipe; the glass plate is fixedly arranged in the observation hole; the glass plate penetrates into the main pipe; a plurality of annular grooves are formed in the main pipe and are arranged at intervals in the axial direction of the main pipe, the ends, close to the glass plate, of the annular grooves are located below the ends, away from the glass plate, of the annular grooves, and the lower portions of the cross sections of the annular grooves are in the shape that the middles are low and the two sides are high. The inclined annular groove is formed in the main pipe, the glass plate penetrates into the main pipe, mist on the inner wall of the main pipe can be rapidly gathered into water drops, the water drops are used for cleaning the surface of the glass plate, the glass plate is kept in a clear state all the time, and therefore normal use of the liquid level meter is guaranteed.

The invention discloses a deep underground space in-situ storage test platform fused with a multi-source measurement and control technology, and relates to the technical field of deep ground science and engineering, the deep underground space in-situ storage test platform comprises a mine wall body, and the underground space of the mine wall body is excavated to form a cavern; a sensing optical fiber is arranged on the surrounding rock wall surface of the cavern and is used for monitoring the pressure and temperature change of the surrounding rock in the storage process; a monitoring hole is formed in the outer side of the periphery of the cavern, a high-density electrical method monitoring assembly is arranged in the monitoring hole, a sealing plate is arranged on an opening of the cavern, a regulation and control module is arranged on one side of the sealing plate, a monitoring module is arranged on one side of the regulation and control module, an oil guide port and a water guide port are formed in the sealing plate, and a liquid level meter is fixedly connected to one side of the sealing plate. The high-density electrical method monitoring assembly is combined with the monitoring module and the regulation and control module, real-time monitoring and regulation and control are conducted on surrounding rock and the environment in the deep underground space storage process, the long-term action mechanism of surrounding rock underground space storage is obtained, and the safety and stability of the storage environment are ensured.

The invention provides a gas-liquid interface identification and ship sloshing liquid level correction method and system, and the method comprises the steps: extracting image edge and gray texture features, achieving the state identification of a liquid-gas interface through a lightweight convolutional neural network model, and dynamically generating a collection strategy according to the state identification; then collecting original liquid level signals and synchronously obtaining IMU data, extracting a multi-mode component through signal decomposition, constructing a disturbance recognition model by combining an IMU, filtering disturbance related components and reconstructing a stable liquid level; and further modeling the disturbance component into a residual sequence, realizing disturbance trend prediction and liquid level dynamic correction by using a time sequence prediction model, and outputting more stable and reliable liquid level data. The problem that liquid level measurement is unstable in the LNG ship sloshing environment can be effectively solved, image recognition and IMU data are fused, liquid level disturbance suppression and dynamic correction are achieved, and the method has the advantages of being self-adaptive, resistant to interference, stable in measurement and the like and is suitable for high-precision liquid level monitoring under the complex working condition.

The utility model discloses a phase modulation water level measuring device of a pumped storage unit, which belongs to the technical field of phase modulation operation liquid level measuring equipment and comprises a high water level connecting pipe, a low water level connecting pipe, a first communicating pipe, a second communicating pipe, a real-time liquid level measuring piece and a tuning fork switch. The upper end of the first communicating pipe is communicated with the high-water-level connecting pipe and the upper end of the second communicating pipe, the lower end of the first communicating pipe is communicated with the low-water-level connecting pipe and the lower end of the second communicating pipe, the tuning fork switch is installed on the first communicating pipe, and the real-time liquid level measuring piece is installed on the second communicating pipe. The first communicating pipe is connected to a draft tube of the pumped storage unit through a high-water-level connecting pipe and a low-water-level connecting pipe to form a first communicating vessel structure, and the second communicating pipe is matched with the first communicating pipe to form a second communicating vessel structure. The technical problem that in the prior art, due to the fact that a floater is prone to impact deformation, measurement accuracy and reliability are limited is effectively solved, and the advantages of being high in measurement accuracy and reliability are achieved.

The invention relates to the technical field of aero-engines, in particular to a lubricating oil tank liquid level detection method, device and equipment, a medium and a program product. The method comprises the steps that the measured liquid level of oil in a lubricating oil tank of the aircraft is obtained, and current attitude information of the aircraft is obtained; the attitude information comprises a pitch angle, a yaw angle and a roll angle; based on a standard corresponding relation, a target standard liquid level corresponding to the current attitude information is determined, and the standard corresponding relation is the corresponding relation between the attitude information and the liquid level of the aircraft when oil in a lubricating oil tank is in a normal state; and determining a detection result based on the size relationship between the target standard liquid level and the measured liquid level. By means of the method, the precision of liquid level measurement of the oil in the lubricating oil tank can be improved.

The utility model provides a hydrogen peroxide storage tank liquid level meter which comprises a liquid level meter body, a protective shell is installed on the outer side of the liquid level meter body, and a plurality of sets of U-shaped visible windows are arranged on the outer side of the protective shell. Connecting pieces are installed at the two ends of the protective shell. According to the liquid level meter, the liquid level meter body is matched with the protective shell, so that the liquid level meter body can be protected, the liquid level meter body is prevented from being damaged due to the fact that the liquid level meter body is collided by the outside in the using process, and the service life of a product is prolonged; according to the liquid level meter, the U-shaped visual window is matched with the protective shell, a user can conveniently observe the liquid level meter body in a multi-direction and multi-angle mode, the sealing performance of the protective shell can be improved through matching of the sealing sleeve, the liquid level meter body and the protective shell, the liquid leakage condition is avoided, and therefore the measurement accuracy of the liquid level meter is improved.

The invention relates to a liquid level measurement and correction method for a reactor pressure vessel. The method comprises the following steps: dividing the pressure vessel into a plurality of measurement intervals along a pressure difference direction; acquiring first measurement data of the pressure vessel, calculating the initial measurement liquid level height of the pressure vessel according to the first measurement data, assigning the initial measurement liquid level height to the variable liquid level height to be corrected, judging the measurement interval and correcting; according to the corrected liquid level height and the to-be-corrected liquid level height before correction, the measurement intervals where the corrected liquid level height and the to-be-corrected liquid level height are located are compared, when the corrected liquid level height and the to-be-corrected liquid level height belong to different measurement intervals, the to-be-corrected liquid level height is replaced with the current corrected liquid level height, and the latest to-be-corrected liquid level height continues to be corrected; when the latest corrected liquid level height and the latest to-be-corrected liquid level height are located in the same measurement interval, the latest corrected liquid level height is used as the liquid level height of the coolant in the pressure container; on-line correction of the liquid level of the coolant in the pressure container can be achieved, and the liquid level characterization precision is improved.

The utility model relates to the technical field of photoelectric liquid level sensors, and particularly discloses a pipeline type photoelectric liquid level sensor which comprises an installation pipeline, one side of the installation pipeline is fixedly connected with an installation shell, one side of the interior of the installation shell is fixedly connected with an optical plate, and the other side of the interior of the installation shell is connected with a PCB in an inserted mode. One end of the PCB is fixedly connected with a light transmitting and receiving device, the side, away from the pipeline, of the mounting shell is fixedly connected with a mounting plate, the mounting shell is fixed to the mounting pipeline, an air cylinder is fixed to the mounting shell, the air cylinder is used for driving a moving plate to move, and the moving plate drives a wiping pad to move; the wiping pad moves back and forth to wipe the mirror surfaces of the light emitter and the light receiver, so that the mirror surfaces are clean, accumulation of dust, water films or chemical substances can be avoided, and normal propagation of light is ensured, and therefore, the accuracy of liquid level measurement is improved, long-term stable work of the sensor is facilitated, the frequency of maintenance and replacement is reduced, and the working efficiency is improved; the maintenance cost is reduced.

The invention discloses an ultrasonic liquid level measurement system and device.The ultrasonic liquid level measurement system comprises a converter calibration circuit, a transducer calibration circuit, a liquid level measurement control circuit, a transducer, a first contact and a second contact, one end of the first contact is connected with the liquid level measurement control circuit, one end of the second contact is connected with the transducer, and the other end of the second contact is connected with the transducer. The converter calibration circuit excites an echo signal analog signal according to a multi-pulse driving signal of the liquid level measurement control circuit, the transducer calibration circuit carries out blind area calibration and sensitivity compensation based on the current blind area liquid level, when the converter is calibrated, the first contact and the converter calibration circuit are conducted, and the transducer calibration circuit is switched on. The liquid level measurement control circuit is connected with the converter calibration circuit through a first contact; when the transducer is calibrated, the second contact and the transducer calibration circuit are conducted, and the liquid level measurement control circuit is connected with the transducer calibration circuit through the second contact. The converter calibration circuit and the transducer calibration circuit are used for calibration, and the problems of liquid level measurement deviation and failure are solved.

The invention discloses a single-ultrasonic-head sensor for measuring liquid density and liquid level height, which relates to the technical field of liquid level measurement and comprises a floater component, a reflection cavity component and an ultrasonic sensor component. The floater assembly is assembled on the reflection cavity assembly, the reflection cavity assembly is connected with the ultrasonic sensor assembly, and the ultrasonic sensor assembly is connected with the floater assembly through the reflection cavity assembly. High-frequency ultrasonic waves are transmitted and received through a single point, the sound velocity (density) and the ultrasonic wave return time difference (liquid level) are synchronously analyzed, the density and the liquid level of the urea solution are calculated, the problems of mechanical interference and data splitting are avoided, and the trepanning and cable cost is reduced; the shared high-precision temperature compensation module directly eliminates compensation deviation of the split system, and maintenance only needs single-point anti-crystallization treatment; and in combination with a cross validation algorithm (density liquid level logic mutual verification), the operation and maintenance cost is reduced while the data reliability is improved, and the method is particularly suitable for space-limited and highly-corrosive urea solution detection scenes.

The invention relates to the technical field of liquid level measurement, and discloses a liquid level meter non-contact precision measurement device, which comprises a mounting shell and a liquid level meter arranged on the mounting shell, and further comprises a positioning plate arranged opposite to the detection end of the liquid level meter and floating on the liquid level, and a liquid level meter arranged on the positioning plate, the display panel is fixedly arranged on the mounting shell, and numerical scales are arranged on the surface of the display panel in the vertical direction; the indicator board is arranged on the mounting shell in a sliding manner and is provided with an indicator mark pointing to the display board; and the linkage mechanism is connected with the positioning plate. According to the liquid level meter non-contact type precision measuring device and the measuring method, the display panel corresponding to the liquid level meter blind area range is preset, when the liquid level rises to the blind area, the positioning plate can drive the indicating plate to move through the linkage mechanism, and the liquid level is accurately measured. Therefore, according to the liquid level of the liquid level in the blind area, the indicating mark on the indicating board points to the corresponding numerical scale on the display board to represent current liquid level data, and it is guaranteed that the liquid level data can be accurately obtained after the liquid level reaches the full scale of the liquid level meter.

A carbonation slurry production system is provided that can fix carbon dioxide in a slurry consisting of calcium-containing powder and water and can easily control the average residence time of the slurry. A carbonated slurry production system 1 including: a slurry tank 2 having first slurry storage portions 10a, 10b for contacting the slurry with a carbon dioxide-containing gas; a slurry supplying device 7 for supplying a slurry consisting of a calcium-containing powder and water; a carbon dioxide-containing gas supplying device 4 for supplying a carbon dioxide-containing gas at a pressure greater than atmospheric pressure to gas phases 9a, 9b consisting of the carbon dioxide-containing gas in the first slurry storage portion; a carbon dioxide-containing gas discharging device 5 for discharging the carbonated slurry; liquid level measuring means 6a, 6b, 6c for measuring the height of the liquid level consisting of the slurry; and a slurry control device 7 for controlling the average residence time of the slurry based on the heights of the first liquid levels 8a, 8b and the second liquid level 11.

The invention relates to a method and system for accurately measuring the liquid level of printing and dyeing sewage. The method comprises the steps that heat distribution information and environment temperature detection data are obtained; correcting the thermodynamic distribution information by using the environment temperature detection data, splitting the corrected thermodynamic distribution information based on a preset splitting and combining rule, and recombining to obtain a plurality of pieces of dispersed thermodynamic distribution information; inputting the dispersed thermal distribution information into a preset rationality analysis model to obtain thermal distribution rationality information; and obtaining a measurement result according to the thermodynamic distribution rationality information. The device has the effect of improving the accuracy of printing and dyeing sewage liquid level measurement.

A method and system for preventing condensation of an ultrasonic liquid level meter. The method comprises: connecting a heat tracing unit to an ultrasonic liquid level meter, and deploying a temperature monitoring module; on the basis of a measurement result of the monitoring module, calculating the dew point of the surface of a probe of the ultrasonic liquid level meter; and comparing the dew point with the surface temperature of the liquid level meter measured by the monitoring module and, on the basis of a heating control execution module, performing dynamic temperature control. By means of deploying the heating unit and the temperature monitoring module, the present invention measures the surface temperature of the probe in real time and, on the basis of the calculated dew point, dynamically adjusts heating power, such that the surface temperature of the probe is higher than the dew point temperature, thus effectively avoiding condensation and solving the effect of environment temperature and humidity on the precision of liquid level measurement.

The utility model discloses a liquid level control system, which comprises a liquid level measuring unit, a liquid level control unit and a discharge valve unit, the liquid level control system is not influenced by pressure, viscosity, color and chemical property when being used for measuring the liquid level of slag, the measuring result is more accurate and reliable, and the liquid level control system is suitable for a gasification furnace for continuously discharging high-temperature slag.

The invention relates to a liquid level measuring device applied to a reservoir area and a reservoir area volume calculation method and system.The method comprises the following steps that modeling is conducted on the shape of the reservoir area, and the shape of the reservoir area is converted into a preset model of an equivalent inverted halfpace structure; a liquid level measuring device is arranged, the liquid level of the reservoir area is measured through the liquid level measuring device, and the reservoir area liquid level value is obtained; obtaining a to-be-recognized image, wherein the to-be-recognized image at least comprises a liquid level and a boundary line between the liquid level and the environment; and determining a liquid level in the to-be-identified image and a boundary line between the liquid level and the environment by using a preset image identification method, and determining an angle deviation parameter in the to-be-identified image according to a perspective transformation principle. According to the technical scheme, the reservoir water storage area is constructed into the preset model in the shape of the inverted half-pace, the irregular shape of the reservoir area is regularized, the water storage capacity of the reservoir area can be calculated according to the combination of the actual area of the liquid level of the reservoir area and the measured water level depth, namely, the liquid volume in the reservoir area is calculated, and the manual participation amount and the measurement difficulty can be effectively reduced.

The utility model discloses a lifting module and an on-site material level simulation device, and belongs to the technical field of material level measurement. The lifting module comprises a rack, a lifting mechanism and a rack leveling assembly, the rack comprises a base and a stand column, and the stand column extends in the vertical direction and is fixed to the base; the lifting mechanism comprises a lifting driving assembly and a lifting platform, the lifting platform is installed on the stand column in a liftable mode, and the lifting driving assembly is used for driving the lifting platform to ascend and descend. The rack leveling assembly comprises a fixing piece and a lifting supporting piece, the fixing piece is fixed to the base, the lifting supporting piece is in threaded connection with the fixing piece and extends in the vertical direction, and the bottom of the lifting supporting piece can abut against the containing face of the base; the at least three rack leveling assemblies are evenly arranged at intervals and used for adjusting the horizontal posture of the base so that the whole lifting module can be kept in the horizontal state. The lifting module is applied to the on-site material level simulation device, overall leveling of the on-site material level simulation device can be achieved, and on-site in-situ calibration precision is improved.