676results about "Testing/calibration apparatus" patented technology

The invention belongs to the technical field of liquid level monitoring, and relates to a liquid level monitoring method and system based on a radar liquid level meter. The current temperature of the stored substance in the target storage tank is matched with the dielectric constant, whether the dielectric constant is abnormal or not is judged accordingly, the influence of the temperature on the dielectric constant of the stored substance is considered, and errors caused by temperature changes when the radar liquid level meter monitors the liquid level are avoided; whether abnormal influence is generated on the monitoring process of the radar liquid level meter or not is evaluated from multiple dimensions through the key obstacles in the target storage tank, the limitation of single parameter analysis is broken through, measurement errors caused by obstacle abnormity can be reduced, and the stability of liquid level monitoring is ensured; whether foam interference or steam interference occurs or not when the radar liquid level meter monitors the liquid level is recognized through multiple verification modes, the accuracy of interference reason recognition is improved, the pertinence of maintenance measures is guaranteed, and the situation that the measurement precision of the radar liquid level meter is reduced due to abnormal medium characteristics is avoided.

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 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 relates to a calibration device (5) for calibrating radar-based level measuring devices (1) or their high-frequency module. For this purpose, the device (5) is based on a base body (51). A waveguide (52) runs within a planar plane (A) in this base body. The waveguide (52) is characterized by an input region (521), a coupling region for radar signals (S). HF , R HF ) reflective end region (522), and calibration section running between it (d kal ) out. According to the invention, the waveguide (52) or the calibration section (d) is kal ) are formed in a spirally nested configuration. This results in a spirally nested structure in relation to the length of the calibration section (d). kal ) or of the waveguide (52) achieves a very compact design, so that the calibration device (5) can also be used for recalibrations at the place of use of the level measuring device (1).

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 flow calibration, and discloses a multi-pipeline flow collaborative calibration system. The system comprises a flow characteristic acquisition module, a flow category classification module, a sequence analysis module, a trend analysis module, a correction module and a collaborative decision module. The flow characteristic acquisition module is used for acquiring current flow data and real-time characteristic information of multiple pipelines and indexing a historical flow data set; the traffic category classification module classifies the historical characteristic information to obtain a plurality of traffic categories, and extracts related information for processing to obtain a historical calibration score set; the sequence analysis module serializes the historical calibration score set and ranks the historical calibration score set according to time to form a historical traffic sequence; the trend analysis module analyzes the flow change rate and the stability deviation rate according to the historical flow sequence; the correction module matches the real-time characteristic information with the traffic category, and corrects the rate value according to the deviation; and the collaborative decision-making module performs multi-pipeline collaborative calibration decision-making based on the corrected data, generates and executes a flow calibration scheme, and assists the multi-pipeline system in precise flow control.

Methods, apparatus, and systems for determining a level of a liquid in a liquid-containing vessel are disclosed. The liquid-containing vessel may be fluidically connected to a displacer cage. The method may include obtaining, with a load measurement device, a weight force of a displacer suspended from the load measurement device and disposed within the displacer cage. The method may also include submerging the displacer into the liquid and obtaining, with the load measurement device, a net force acting on the displacer. The method may further include obtaining, with a liquid density measurement sensor disposed within the displacer cage, a liquid density at a first location of the liquid. The method may still further include determining, using, at least, the net force and the liquid density at the first location of the liquid, the level of the liquid in the vessel.

The invention discloses a river water level detection method, and relates to the technical field of computer processing, and the method comprises the following steps: S01, presetting a distributed pressure sensor array in each target collection region to obtain underwater pressure data k and real-time water flow data v of a plurality of target collection regions of a river to be detected; s02, establishing a dynamic pressure water level model based on the water flow direction pressure conduction quantity estimation of the plurality of target acquisition areas in combination with real-time water flow velocity and wave period parameters; s03, performing signal attenuation compensation on the underwater pressure data according to the dynamic pressure water level model to obtain initial water level data; s04, multi-source data fusion calibration is carried out on the preliminary water level data, a river water level detection result is generated, and the result comprises a wave height frequency spectrum and a water level change curve after peak elimination correction; and S05, generating a wave energy spectral density map according to the calibrated water level data, performing real-time comparison according to the wave energy spectral density map and a preset threshold value, and performing result return according to a comparison structure. The small-wave-height short-period wave measurement precision and the water level detection reliability are remarkably improved, the intelligent flood prevention early warning and dynamic adjusting capacity is achieved, and it is guaranteed that data collection is accurate and consistent.

The invention relates to an anti-interference intelligent liquid level transmitter system which comprises a measuring unit used for acquiring an original liquid level signal; the anti-interference processing unit is in signal connection with the measuring unit and is used for executing anti-interference algorithm processing on the original liquid level signal, and the anti-interference algorithm processing includes adopting an acceleration compensation algorithm and a dynamic filtering algorithm to eliminate measuring errors caused by mechanical vibration and medium flow; and the output unit is in signal connection with the anti-interference processing unit and is used for outputting the standardized liquid level signal. The problem that a traditional static filtering algorithm cannot adapt to a dynamically changing vibration environment in real time is solved.

The utility model discloses a novel copper liquid level meter which comprises a radar liquid level meter body, a horn mouth antenna and a cooling device, the cooling device comprises a heat dissipation cylinder cooling assembly, a heat insulation barrier assembly and a heat preservation and insulation cylinder, the heat dissipation cylinder cooling assembly is arranged at the top of an external detection base, the horn mouth antenna is arranged in the external detection base, and the heat insulation barrier assembly is arranged in the heat preservation and insulation cylinder. The heat dissipation cylinder is connected with the bottom of the heat dissipation cylinder cooling assembly; the heat insulation barrier assembly is arranged on the top of the heat dissipation barrel cooling assembly, the heat preservation and insulation barrel is arranged on the top of the heat insulation barrier assembly, and the radar liquid level meter body is arranged in the heat preservation and insulation barrel. According to the utility model, the efficient cooling device is arranged between the radar liquid level meter body and the detection seat, the cooling device not only prevents the direct influence of the high temperature of the furnace body on the radar liquid level meter body, but also greatly enhances the heat dissipation effect, and the use effect is good.

The invention relates to the technical field of intelligent sensing systems, in particular to an algorithm and system for avoiding water surface floating objects and improving monitoring precision based on radar water level monitoring, and the method comprises the following steps: collecting radar echoes, constructing spatial-temporal characteristics based on waveform asymmetry and coherent attenuation gradient, and calculating the spatial-temporal characteristics; according to the method, the central moments of the front edge and the rear edge of the echo are calculated, the waveform asymmetry is quantified, the dynamic stability is analyzed in combination with the attenuation gradient of the multi-time-lag coherence coefficient, the floating object interference is recognized from the double dimensions of the spatial form and the time memorability, and the actual water level is inverted. An effective scattering trailing interval is positioned, nonlinear approximation operation is performed on trailing data in combination with an index physical model, a shielded water surface energy distribution curve is reconstructed, a derivative zero point is solved, distance measurement deviation caused by floating objects is corrected, the real water level height is effectively restored, and the monitoring anti-interference capability and the data accuracy in a complex hydrological environment are improved.

A high-precision laser sludge level meter with a multi-point monitoring function includes a hanging bracket and a measuring structure; the hanging bracket allows horizontal rotation and tilt adjustment to support the measuring structure; the measuring structure includes a housing, and a Doppler optical ranging unit and a gas-liquid drying and flushing unit arranged inside the housing, where the housing is fixed on the hanging bracket, the Doppler optical ranging unit inside the housing is configured to adjust a laser focus through a lens to identify a sludge-water interface in a pipe, and a light output end of the Doppler optical ranging unit is dried and flushed by the gas-liquid drying and flushing unit. The sludge level meter measures a sludge / water interface position by adjusting a laser focal length and proportionally calculates the sludge thickness in the pipe through the focal length adjustment amount.

A sensor and method for determining the state of a humidification chamber in a respiratory gas humidifier. The sensor comprises a transmitter for emitting an electromagnetic radiation signal, a receiver for receiving the electromagnetic radiation signal and providing an output signal, and a controller for varying the intensity of the electromagnetic radiation signal emitted by the transmitter and / or the gain setting of the receiver. The controller has two sensor configurations, a first configuration in which the transmitter emits an electromagnetic radiation signal having a first intensity, the receiver has a first gain setting, and the receiver provides a first output signal, and a second configuration in which the transmitter emits an electromagnetic radiation signal having a second intensity, the receiver has a second gain setting, and the receiver provides a second output signal, wherein the first intensity is different to the second intensity, and / or the first gain setting is different to the second gain setting, and the controller determines a state of the humidification chamber by comparing the first and second outputs of the receiver with one or more threshold values.

The invention relates to the technical field of industrial automation, and particularly discloses a remote liquid level transmitter system based on HART (Highway Addressable Remote Transducer) communication, which constructs a multi-scale state interaction tensor by synchronously acquiring original sensing signals and communication carrier quality parameters of a transmitter, respectively extracting high-order feature sets of the transmitter and analyzing a nonlinear coupling relationship between the original sensing signals and the communication carrier quality parameters; quantifying the physical health state of the sensor through tensor decomposition and manifold learning, generating a progressive quantification factor representing the integrity degradation of the sensor, predicting a failure mode and residual life based on the change track of the factor, and packaging into an enhanced diagnosis frame for returning; according to the method, the problem that early physical damage and communication interference of the sensor are difficult to distinguish is solved, and accurate early warning and predictive maintenance of hidden faults are achieved.

The invention discloses a self-calibration and drift compensation method for an automatic underground water monitoring station, and the method comprises the following steps: 1, transmitting a reference measurement starting instruction to an underground bubble method device by an edge calculation gateway, forming a reference data pair by a bubble method water level reference value and a reference acquisition moment, and writing the reference data pair into a reference data cache region; 2, the edge computing gateway creates a state storage structure and a covariance storage structure; and step 3, the edge computing gateway reads a drift amount estimation value from the state storage structure as a drift compensation amount, and when a drift estimation standard deviation exceeds a set threshold, bubble method hardware reference acquisition is triggered. According to the invention, the problems of high manual calibration cost and lack of independent reference support in pure software estimation in the prior art are solved, so that a monitoring station can stably operate for a long time under an unattended condition and continuously output high-precision underground water level monitoring data.

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.

The invention belongs to the technical field of high-precision liquid level detection, and particularly relates to a high-precision liquid level detection method which comprises an installation preparation module, an installation position determination module, a comprehensive consideration module and a special installation method module. And the liquid level detection precision can be obviously improved. The photoelectric sensor is sensitive to light change and suitable for directly detecting the liquid surface; the ultrasonic sensor determines the distance by measuring the propagation time of sound waves, and is relatively insensitive to the change of liquid properties. The combination of the two can complement deficiencies and reduce errors.

A radar level measuring device is provided, the device being configured to perform a measurement for determining a level of a filling material by a frequency modulated continuous wave measurement method, the radar level measuring device including: a transmitting device configured to transmit a radar signal in a direction of a filling material surface to perform the measurement; a receiving device configured to receive the radar signal reflected from the filling material surface and to evaluate the measurement; a control device configured to control the transmitting device and the receiving device; and a selection device configured to select a parameter set for controlling the transmitting device and the receiving device, the parameter set including at least a measurement duration of the measurement, a minimum measurement frequency and a maximum measurement frequency of the measurement, and a number of consecutive measurements.

The invention belongs to the technical field of instrument and meter and Internet of Things monitoring, particularly relates to a wireless liquid level remote monitoring liquid level meter and a monitoring system, and aims to solve the problems of low precision and poor stability caused by insufficient temperature resistance, hanging material interference and lack of automatic calibration in high-temperature molten salt liquid level measurement. The system comprises a 1000 DEG C-resistant double-layer coaxial capacitance sensing probe, a self-adaptive signal conditioning module, a wireless transmission unit, a remote monitoring terminal and a dynamic calibration engine, material hanging is inhibited through a porous ceramic electrode, the signal precision is improved through differential capacitance and temperature compensation, and manual-free online calibration is realized based on the dielectric property of molten salt. The system supports remote visualization and intelligent alarm, and is suitable for extreme working conditions such as photo-thermal power generation.

The invention relates to a radar level measuring device (100) configured to carry out a measurement (210, 220, 230) for determining a fill level (194). The fill level (194) is determined using an FMCW measuring method. The radar level measuring device (100) comprises a transmitting device (110) configured to transmit a radar signal (114) in the direction of a fill material surface (194); a receiving device (120) configured to receive the radar signal (124) reflected from the fill material surface (194); a control device (160) configured to control the transmitting device (110) and the receiving device (120); and a selection device (140) configured to select a parameter set (150.1) for controlling the transmitting device (110) and the receiving device (120). The parameter set (150.1) comprises at least one measurement duration (t d ) of the measurement (210), a minimum measurement frequency (f min ) and a maximum measurement frequency (f max) of the measurement (210), and a number of consecutive measurements (210, 220, 230).

The invention discloses a method for determining displayed oil quantity and a related device, and relates to the technical field of intelligent automobiles. The method comprises: determining a running state of a vehicle based on driving data of the vehicle (S201); acquiring an oil quantity resistance value of the vehicle in the operating state (S202), wherein the oil quantity resistance value is used for indicating the measured oil quantity of the vehicle; and if the operation state is a first state, determining a target display fuel quantity of the vehicle based on the current display fuel quantity, the fuel quantity resistance value, and a first fuel injection quantity (S203), the first state being used for indicating that the first fuel injection quantity is the fuel injection quantity collected during the operation of the engine of the vehicle during the operation of the engine of the vehicle during the operation of the engine of the vehicle. The accuracy of displaying the calculation of the fuel quantity can be improved.

The invention belongs to the technical field of laser volume calibration, and particularly relates to a laser volume calibration system for a laboratory portable pipettor, which comprises a volume calibration equipment main body and a calibration container, and is characterized in that the volume calibration equipment main body is integrated with an integrated optical measurement module, a data acquisition and intelligent processing unit and a man-machine interaction module; the height change of the liquid level center point can be accurately measured, the specific forms such as the contact angle, the curvature radius and the depth of the liquid level meniscus can be captured and analyzed in real time through images, the liquid level form correction module can accurately calculate the missing volume caused by the concave meniscus by using the parameters, and the accuracy of the missing volume is improved. According to the method, the actual liquid level height is calculated and compensated to the final actual liquid level height, the systematic measurement deviation caused by neglecting the geometrical shape of the meniscus in a traditional single laser ranging method can be fundamentally solved, the volume measurement precision is remarkably improved, and the calibration precision can be improved to a new level.

The invention provides a debugging and detecting method and system for a guided wave radar liquid level meter, and relates to the technical field of debugging and detecting of the guided wave radar liquid level meter, and the debugging and detecting method comprises the steps that an exhaust flange and a guided wave radar liquid level measuring assembly are assembled, and a medium is injected into a measuring cylinder through the exhaust flange for cleaning; the electronic dial and a water level datum line of equipment to be measured are subjected to benchmarking, the electronic dial is fixed, the two sides of the filter pressure reducing device are communicated with the bottom of the guided wave radar liquid level measuring assembly and the bottom of the electronic dial respectively, the pump body is communicated with the filter pressure reducing device, and a first valve assembly and a second valve assembly are arranged; the first valve assembly is closed, the control valve on the exhaust flange is opened, and the measurement precision of the guided wave radar liquid level measurement assembly is adjusted by controlling the working states of the pump body and the second valve assembly. According to the debugging detection method, it can be guaranteed that measurement is more accurate after the constructed guided wave radar liquid level meter system operates, the construction cost is saved, and the production debugging period is shortened.

The invention relates to the technical field of water conservancy project monitoring and early warning, and discloses a water conservancy project remote early warning method and system, and the method comprises the steps: 1, synchronously collecting water level data and probe displacement data through a radar sensor and an inertia measurement module, and carrying out the dynamic compensation of the data through an extended Kalman filtering algorithm, generating a data message containing the node identifier, the correction displacement and the water level height; and 2, receiving the data message in the step 1, storing the data message in an annular buffer area, performing accumulative compensation on displacement data based on a sliding mean filtering algorithm, and outputting a calibrated vertex coordinate set in combination with preset topographic data. The technical scheme of radar and IMU data synchronous acquisition and extended Kalman filtering dynamic compensation is adopted, sub-centimeter level displacement compensation precision is achieved, compared with the scheme that probe shaking is counteracted by depending on a redundant radar array in the prior art, the problems of high hardware cost and high deployment complexity are solved, and single-probe high-precision water level monitoring is achieved.

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 an anti-shaking mechanism, the rack comprises a base, a stand column and a cross beam, the lifting mechanism comprises a lifting driver, a guide wheel, a steel wire rope and a lifting platform, the lifting driver is fixed to the base, the guide wheel is fixed to the cross beam, the steel wire rope winds around the guide wheel, one end of the steel wire rope is connected with the lifting driver, and the other end of the steel wire rope is connected with the anti-shaking mechanism; the other end is connected with the lifting platform; anti-shaking mechanisms are arranged on the sides, opposite to the stand columns, of the lifting platforms, and the anti-shaking mechanisms are in sliding and rolling fit with the corresponding stand columns to reduce shaking of the lifting platforms in the lifting process, so that the lifting module has the advantages of being light in weight, convenient to carry and the like, stable lifting of the lifting platforms can be guaranteed, and the service life of the lifting platforms is prolonged. And the on-site in-situ calibration requirement of the spatial reflective level meter can be met.

The embodiment of the invention provides a non-contact water level detection management method and device. The non-contact water level detection management method comprises the following steps: acquiring a water capacitance reference value of target pet drinking equipment in a water-free state; when the target pet water drinking equipment is in a normal operation process, periodically collecting a water capacitance real-time detection value of the target pet water drinking equipment through presetting; performing comparison processing on the basis of the water capacitance reference value and the water capacitance real-time detection value, and determining the current water level state in the target pet drinking equipment; and based on the water level state, performing control management on the water pump operation state of the target pet water drinking equipment. By taking the no-load calibration value as the reference datum and combining with periodic detection, the water state and the water-free state can be accurately distinguished, the water judgment precision is improved, the water pump is effectively prevented from being mistakenly triggered to operate, and the device has the advantages of being simple in structure, low in cost and high in applicability.

The invention provides a reservoir water rain condition monitoring system and a monitoring method, the system constructs a dual monitoring system of physical observation reference and electronic automatic acquisition, a customized stainless steel water gauge and a multi-element acquisition device are deployed on key sections of a reservoir dam and a drainage basin, and a front-end edge calculation module is utilized to invert the flow in real time. And after the data is transmitted to the cloud platform, intelligent management and control are carried out through the four-pre functional module. The system displays the watershed situation based on a GIS graph, integrates an online flow measurement algorithm to generate a water and rain condition process line in real time, and realizes visual supervision by combining video monitoring and OSD data superposition. The core multi-target optimization scheduling model comprehensively considers flood control safety and power generation benefits, generates an optimal scheduling scheme through simulation deduction, and provides a closed-loop control interface. The problems of low monitoring precision, scheduling decision lag and the like in the prior art are solved, and the automatic management level and the water resource utilization rate of the reservoir group are remarkably improved.

The utility model discloses a reflecting plate leveling module and an on-site material level simulation device, and belongs to the technical field of material level measurement. The reflecting plate leveling module comprises a leveling platform and a leveling mechanism, wherein the leveling platform is used for fixing a reflecting plate; each leveling mechanism comprises a spherical hinge assembly and a leveling driving assembly, the three leveling mechanisms are evenly arranged at intervals and arranged on the peripheral side of the reflecting plate in a surrounding mode, and the output end of each leveling driving assembly is fixedly connected with the leveling platform so that the horizontal posture of the leveling platform can be adjusted. In the lifting process of the output end of the leveling driving assembly relative to the lifting platform, the deformation amount of the leveling platform and the reflecting plate can be avoided or reduced through the spherical hinge assembly, and the reflecting precision of the reflecting plate is improved. The reflecting plate leveling module is applied to the on-site material level simulation device, the horizontal posture of the reflecting plate can be adjusted in real time, the on-site in-situ calibration precision is improved, and the precision requirement of daily material level measurement is met.

The invention discloses an intelligent sensing data processing method based on an electronic water gauge, which belongs to the field of water level sensors and comprises the following steps: acquiring visible light images, infrared thermal imaging, ultrasonic ranging and pressure type water level values to form multi-source data; constructing a Kalman filter and defining a water level state vector based on the obtained multi-source data, dynamically adjusting a weight factor and a noise covariance matrix according to the real-time confidence of each sensor, and outputting a preliminary water level estimated value and a corresponding confidence index after fusion calculation; fusing the obtained multi-source data into four-channel input data, inputting the four-channel input data into a pre-trained U-Net model for semantic segmentation, generating a water surface shelter segmentation mask, identifying the type of a shelter based on the mask, and calculating a shelter area proportion; and extracting a water line edge point set of an unshielded region from the original image by using the generated shielding object segmentation mask, reconstructing a continuous water line through linear fitting, and performing interpolation filling on the shielded region.

The utility model discloses an integrated two-channel redundant liquid level meter which comprises a liquid inlet pipe, a flow dividing pipe, a driving motor and two detection pipes, the liquid inlet pipe is communicated with the middle of the flow dividing pipe, the driving motor is arranged on the outer side of the flow dividing pipe, the output end of the driving motor extends into the liquid inlet pipe from the flow dividing pipe, and a cleaning head is arranged at the output end of the driving motor. The two ends of the shunt pipe are correspondingly communicated with the two detection pipes, two control switches are correspondingly arranged at the joints of the shunt pipe and the two detection pipes, and mounting seats are arranged at the tops of the detection pipes; the driving motor of the integrated double-channel redundant liquid level meter can drive the cleaning head to clean the liquid inlet pipe, the possibility of blockage of the liquid inlet pipe can be reduced, the two detection pipes conduct liquid level detection respectively, the detection accuracy can be improved, if the floating ball of one detection pipe breaks down, the other detection pipe can continue to be used and conduct comparison, and the detection accuracy is improved. And a worker can timely discover the fault condition of the detection pipe and process and correct the fault condition.