1324 results about "Flow transducer" patented technology

A system for AI-supported leak detection and localization in water distribution infrastructures, consisting of: a large number of distributed sensor nodes mounted along a water pipe, each sensor node comprising the following: a pressure sensor configured to measure local hydraulic pressure fluctuations within the pipeline with a resolution of at least 0.01 bar; a flow sensor configured to measure the volume flow within the pipeline with an accuracy of at least ±0.5% of the measured value; an acoustic sensor configured to detect vibration signatures caused by leaks in a frequency range between 50 Hz and 20 kHz; an embedded microcontroller with integrated analog-to-digital conversion circuitry for digitizing sensor outputs; a wireless communication module configured to transmit time-synchronized sensor data to a cloud-based processing platform; and a local energy subsystem with a rechargeable battery and an optional circuit for generating photovoltaic energy; the cloud-based processing platform includes an artificial intelligence engine that comprises the following: a data acquisition module configured to receive and decode the transmitted sensor data and to perform time alignment; a supervised learning module that is trained on historical data of flagged leaks and non-leaks to classify incoming sensor patterns; an unsupervised learning module configured to detect anomalies by modeling normal operating baselines of the pipeline; and a topology-aware localization module configured to determine leak coordinates using the topology of the pipeline network, modeling the propagation of hydraulic waves, and estimating the arrival time difference from multi-node acoustic detections; and wherein the system is configured to provide real-time leak alerts and georeferenced visualization via a remote monitoring interface.

The invention discloses an intelligent double-liquid grouting system and a grouting method. The system comprises a liquid A stirring barrel, a liquid B stirring barrel, a double-liquid grouting pump, a slurry mixer, a PID (Proportion Integration Differentiation) regulating valve, a control system, a flow meter, a pressure meter, a flow sensor and a pressure sensor. The liquid A and the liquid B are respectively prepared and then sent out by a double-liquid grouting pump, enter a slurry mixer to be compounded and mixed, and are injected into a target stratum through a directional grouting pipe. The system collects and analyzes flow and pressure data through a control system, and closed-loop regulation and control of grouting flow and proportion are achieved through PID regulation logic. The PID regulating valve has the functions of over-voltage current limiting and overflow prevention at the same time. The method is suitable for reinforcement and leakage treatment under a complex stratum in geotechnical engineering, and has the advantages of being high in matching precision, high in mixing efficiency, good in safety, high in adaptability and the like.

The invention relates to the technical field of urban drainage management, and discloses a municipal sewage pipe network dynamic drainage system and a control method, and the system comprises a sewage pipe network, a central controller, a pump station, a valve and an edge control terminal; the control method comprises the following steps that real-time data are obtained from a plurality of sensors arranged in a sewage pipe network, the plurality of sensors comprise a flow sensor, a water level sensor, a pressure sensor and a rainfall sensor, and the obtained real-time data comprise the sewage flow, the water level, the pipeline pressure and the external rainfall inflow in the pipe network; based on the collected real-time data, dynamic hydraulic modeling is carried out on the sewage pipe network through a central controller, a mathematical model for describing the hydraulic state change of the pipe network is established, and the mathematical model comprises spatio-temporal evolution of flow, water level and pressure. According to the invention, by constructing a drainage scheduling mechanism based on real-time data modeling and edge control linkage, dynamic adjustment and stable control of the running state of the sewage pipe network are realized.

The invention relates to the technical field of water supply pipeline detection, and discloses an underground water supply pipeline health grade evaluation and risk prediction method, which comprises the following steps: sensor arrangement: arranging a flow sensor, a pressure sensor and a sonic sensor at key positions of an underground water supply pipeline; and data acquisition: acquiring signals of the sensor in real time through a data acquisition module, wherein the signals comprise flow, pressure and sound wave signals. Preprocessing the data: carrying out preprocessing such as denoising and normalization on the collected signals; and multi-source data fusion: inputting flow, pressure and sound wave signals into a deep neural network model, and performing feature extraction and fusion analysis. And health level assessment: assessing the health level of the pipeline based on the output result of the deep neural network model. And risk prediction: predicting abnormal working conditions possibly occurring in the future and risk levels of the abnormal working conditions by analyzing the current pipeline state and historical data. And abnormal positioning: accurately positioning an abnormal position in combination with the propagation time of the sensor signal and a positioning model of the deep neural network.

The invention discloses an intelligent flow sensor test analysis method and system, and relates to the technical field of sensor testing, and the method comprises the steps: applying a stepped flow excitation signal to a tested sensor through a standard flow generation device, and synchronously collecting the dynamic response data of the sensor; extracting a feature parameter set from the response data; performing similarity matching calculation to obtain a matching degree evaluation value of each error type; quantifying the induction relation strength among different error types; generating a composite weight coefficient in combination with the matching degree evaluation value and the evoked relationship strength; and making a multi-stage compensation strategy based on the composite weight coefficient. The method has the advantages that by combining error correlation network modeling driven by historical data, induction mechanisms and interaction relations of different error types can be analyzed, the pertinence of a compensation strategy is greatly improved, a multi-stage error suppression mechanism is formed, stable control over comprehensive errors is achieved under complex working conditions, and meanwhile the system maintenance requirement is lowered.

The invention relates to the technical field of high-pressure hydrogenation reactor control, and discloses a multi-stage pressure optimization control method and system for a high-pressure hydrogenation reactor, and the method comprises the steps: obtaining temperature, pressure and flow monitoring data, generating original parameter data, and deploying a distributed control network; collecting and analyzing multi-stage pressure sensor data, and generating a pressure change influence factor; sensing a valve state, and generating a valve change influence factor; collecting data of a flow sensor, and dividing a control area after calibration; and calculating a pressure optimization index based on the control area data, integrating multiple factors to generate comprehensive control data, and further generating a pressure control signal and outputting an instruction. The system comprises a control network deployment module, a pressure analysis module, a valve analysis module, a control area analysis module and a pressure control signal generation module. Through multi-dimensional data fusion, a distributed control network and dynamic optimization calculation, the accuracy and stability of pressure control of the high-pressure hydrogenation reactor are improved, and the method is suitable for efficient and safe production in the field of petrochemical engineering.

The invention discloses a heat pipe heat exchanger fault real-time monitoring system and method based on multi-source data fusion, and the system comprises a multi-source data collection module which is used for collecting temperature data, pressure data, flow data, vibration data and image data in the operation process of a heat pipe heat exchanger; the invention relates to the technical field of heat pipe heat exchanger fault monitoring. According to the heat pipe heat exchanger fault real-time monitoring system and method based on multi-source data fusion, multi-source data such as temperature, pressure, flow, vibration and images are creatively fused, and compared with traditional single sensor monitoring, operation state information of the heat pipe heat exchanger can be captured in an all-around mode. Various sensors are arranged at key positions, such as temperature sensors at the inlet, the outlet, the pipe wall and the like, so that the internal temperature distribution of the heat exchanger can be comprehensively mastered; the pressure sensor and the flow sensor can reflect the flowing state of fluid; visual basis is provided for diagnosis of mechanical faults and external states by vibration and image data.

The invention provides an ultrasonic blood flow sensor based on temperature compensation, and relates to the field of medical instruments. The ultrasonic blood flow sensor based on temperature compensation comprises an ultrasonic probe assembly, a temperature sensor and a detection circuit, and the ultrasonic probe assembly is used for emitting ultrasonic waves to an extracorporeal circulation pipeline and receiving the ultrasonic waves penetrating through the extracorporeal circulation pipeline. According to the ultrasonic blood flow sensor based on temperature compensation, the problem that the measurement precision is reduced due to blood temperature changes can be effectively solved, and the ultrasonic blood flow sensor based on temperature compensation can be applied to application scenes such as extracorporeal circulation operations, such as the ECMOs process. Accurate blood flow monitoring is crucial to adjustment of ECMO system parameters, optimization of membrane lung oxygenation effect and guarantee of patient treatment effect. The sensor can provide high-precision and reliable blood flow data and help a doctor to more accurately evaluate the extracorporeal circulation state of a patient, so that a more accurate medical decision is made, and the treatment success rate is increased.

The invention belongs to the technical field of intelligent control, and provides a double-fan parallel operation control system and method based on dynamic flow balance, and the system comprises a flow guide assembly, an electric control valve, a flow sensor and a control assembly; the flow sensors are used for collecting air flow data at the inlets and outlets of the corresponding fan branches and sending the air flow data to the control assembly; the control assembly is used for inputting the air flow data into the three-dimensional dynamic fluid mechanics model to obtain a flow deviation value between the current air flow and the target air flow, inputting the flow deviation value into the control decision model to obtain a control instruction, and issuing the control instruction to the flow guide assembly and / or the electric adjusting valve. And the flow guide direction of the flow guide assembly and / or the opening degree of the electric control valve are / is controlled. According to the scheme, the three-dimensional dynamic fluid mechanics model and the control decision model can be combined, the accurate control instruction is obtained, and the accuracy, reliability and convenience of the double-fan parallel operation control link are improved.

The invention relates to the technical field of medical instruments, and particularly discloses a deep sleep maintenance algorithm for self-adaptive pressure regulation of a breathing machine, which comprises the following steps: step 1, a data acquisition and preprocessing module is connected with a pressure sensor and a flow sensor in the breathing machine to acquire a breathing pressure signal and a breathing flow rate signal of a patient in real time; 2, the data collecting and preprocessing module further conducts filtering and smoothing processing on the collected respiratory signals, noise and interference components are removed, and normalization processing is conducted on the respiratory flow rate signals; according to the breathing machine self-adaptive pressure regulation micro-awakening suppression algorithm based on the tidal volume dynamic tracking model, by dynamically tracking the tidal volume, the breathing requirement of a patient can be sensed in real time, and the pressure output of the breathing machine is self-adaptively regulated according to the change of the tidal volume; by means of the precise pressure adjusting mode, dyspnea caused by insufficient or too high pressure can be effectively avoided.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.

The invention discloses a heat dissipation control method, device and system based on an array chip and a medium. The method comprises the steps that the basic valve opening degree is determined based on the temperature value of any partition and a valve opening degree mapping table; determining a target valve opening degree of each electric valve based on the basic valve opening degree and a spray coverage overlapping model, and sending the target valve opening degree to each electric valve; calculating a target total flow based on all target valve opening degrees, adjusting the rotating speed of a liquid supply pump through a frequency converter, and enabling a measured value of a flow sensor to be the target total flow; determining a target pressure value based on the saturation temperature of the cooling liquid, and adjusting the power of the vacuum pump or the three-way vacuum electromagnetic valve to enable the pressure value of the evaporation cavity to be the target pressure value. According to the method, three-layer linkage logic of partition precise temperature control, system flow coordination and global pressure setting is established, scattered devices are integrated into a whole, overall adjustment of the system level is achieved during heat dissipation control, instructions do not need to be sent frequently to control each valve, and the electric energy consumption of the system is reduced.

The invention discloses a multifunctional hydraulic system experiment table, which relates to the technical field of hydraulic system experiment tables and comprises a time base line synchronous control module, a phase lock correction stability control module, a false peak identification and correction module, a multi-dimensional fault-tolerant judgment control module and a reverse energy slow-release anti-reverse module. And the time base line synchronous control module is used for establishing a cross-sensor unified time base line control structure, generating a synchronous reference surface by using a high-stability crystal oscillator signal, and executing nanosecond phase calibration on sampling signals of the pressure sensor and the flow sensor by taking the synchronous reference surface as a unified time reference. According to the invention, high-precision synchronous acquisition of pressure and flow signals is realized through unified time base line and phase locking correction, and high-pressure transient test data is ensured to be real and stable; and meanwhile, control logic is reconstructed, and an energy slow release strategy is introduced, so that the pressure relief process is stable and controllable, pump reverse rotation and structural impact are avoided, and the safety, reliability and self-healing stability of the experiment table are remarkably improved.

The invention relates to an asymmetric multichannel thermal flow sensor for integrated component detection and a signal processing method, and belongs to the technical field of sensors. The problems that a traditional symmetrical single-channel thermal flow sensor is limited in measuring range, saturated in output, insufficient in measuring precision and single in measuring flow are solved. The sensor comprises a flow inlet cavity, a flow outlet cavity and a measuring pipeline composed of five parallel circular pipelines, the middle pipeline is a component measuring pipeline, and the four pipelines on the periphery are flow measuring pipelines. A probe is arranged in the middle of the component measuring pipeline, a heating resistance wire is arranged in the middle of the flow measuring pipeline, and temperature measuring resistance wires are asymmetrically distributed on two sides. The pipeline is made of aluminum, and fillets are arranged at the joints to optimize fluid flow. The heating resistance wire is a nickel chrome wire, the temperature measuring resistance wire is a platinum wire, the component measuring probe is made of a platinum film, and the surfaces of the platinum film and the platinum film are insulated. An improved Wheatstone bridge circuit is adopted for signal collection, and precision and protectiveness are improved.

Methods and systems for carrier gas identification in gas chromatography are described herein. In one aspect, a gas chromatography system can include a pneumatic system including an input flowpath in fluidic communication with a first output flowpath and a second output flowpath; a first flow sensor configured to generate a flow measurement signal corresponding to a first property of a gas; a second flow sensor configured to generate a second flow measurement signal corresponding to a second property of the gas different than the first gas property; and a controller programmed to: determine the first flow measurement signal for the flow of gas through the pneumatic system; determine the second flow measurement signal for the flow of gas through the pneumatic system; and identify a type of gas for the flow of gas through the pneumatic system from the first and second flow measurement signals.

The invention relates to the technical field of vehicles, and discloses an engine intelligent layered thermal management system and method based on multivariable predictive control, and the system comprises a thermal management execution module, an information sensing module and an intelligent control module; the information sensing module is used for collecting real-time information and sending the real-time information to the intelligent control module; the information sensing module comprises a plurality of sensors and a communication interface, the plurality of sensors at least cover a temperature sensor, a pressure sensor and a flow sensor, and the communication interface is used for obtaining engine torque, rotating speed, fuel injection amount, boost pressure and vehicle speed information; the intelligent control module receives the real-time information sent by the information sensing module, performs thermal load prediction and multi-target optimization calculation to obtain an optimal control sequence, and sends the optimal control sequence to the thermal management execution module; and the thermal management execution module receives the optimal control sequence and calls an execution element to execute a thermal management action.

The invention relates to the technical field of hydraulic control one-way valve testing, and discloses a hydraulic control one-way valve testing method which is used for solving the problem that the real performance of a hydraulic control one-way valve under actual complex working conditions is difficult to comprehensively reflect due to the fact that an existing testing method is single in working condition, insufficient in data acquisition dimension and lack of dynamic modeling capacity. A programmable working condition loading module is introduced, a hydraulic test environment with dynamic characteristics is constructed according to a pressure and flow change curve in practical application, and high-precision and multi-dimensional synchronous acquisition of the whole opening and closing process of the hydraulic control one-way valve is realized by combining a high-frequency displacement sensor, a micro-flow sensor and a vibration sensing unit; according to the scheme, the defect that a traditional testing method is difficult to restore the real dynamic working condition is effectively overcome, the authenticity of valve performance testing and the detail integrity of response data are remarkably improved, and powerful support is provided for accurately evaluating the dynamic behavior of the hydraulic control one-way valve under the complex working condition.

The invention relates to the technical field of metallurgical furnace charge conveying and control, and discloses a top-blown furnace multi-channel supersonic jet type feeding control method and system.The method comprises the steps that flow distribution in a nozzle is achieved through a piezoelectric ceramic high-speed valve installed at a pipeline inlet, and a nozzle servo motor is controlled at the top of a spray gun to adjust the spray angle of the spray gun; the feeding speed, pressure and temperature are monitored in real time through a pressure sensor and a flow sensor arranged in an inlet area of the pipeline and an infrared thermometer mounted at the top of the furnace; the carrier gas flow, the nozzle opening degree and the spraying angle are dynamically adjusted through control of the PLC executing mechanism, and collaborative optimization of the material flow vector, the flow field in the hearth and the heat and mass transfer process is achieved. The system comprises a spray gun, a piezoelectric ceramic high-speed valve, a flow sensor, an infrared thermometer, a nozzle control servo motor, a temperature measurement control small servo motor and a control room. The comprehensive operation efficiency of energy density distribution optimization, reaction efficiency improvement and energy consumption index reduction of the molten pool reactor is finally realized.

The invention relates to the technical field of gas micro-flow sensors, in particular to a thermal gas micro-flow sensor, a flow channel structure and a design method. A rib plate layer, a groove layer and a chip layer of the runner structure of the thermal gas micro-flow sensor are fixedly connected through detachable fasteners, a rib plate is inserted into a groove, first ventilation intervals are formed between the rib plate and the two ends of the groove in the length direction, second ventilation intervals are formed between the rib plate and the bottom of the groove, and a mounting groove is opposite to a through groove in position. And the gas inlet, the gas outlet, the second ventilation interval and the two first ventilation intervals are communicated. By replacing the rib plate layers with different rib plate sizes and / or the groove layers with different sizes, the shape and size of the cross section of the runner can be adjusted. Through mechanical structure innovation, the flow channel performance is convenient and adjustable, great flexibility is provided for sensor research and development, the research and development period is shortened, and the iteration cost is reduced.

The invention relates to the technical field of crustal stress measurement, in particular to a hydraulic fracturing multi-parameter in-situ crustal stress detection device, which comprises an upper packer, a measurement section and a lower packer which are connected in sequence, and further comprises a data acquisition unit, a fracturing section multi-parameter acquisition device and a fracturing crack ultrasonic imaging synchronous detection device, the fracturing section multi-parameter acquisition device and the fracturing crack ultrasonic imaging synchronous detection device are both mounted in the measurement section and can synchronously observe the fracturing section to realize a parallel observation mode; the fracturing section multi-parameter acquisition device comprises a flow sensor and a pressure sensor; the fracturing crack ultrasonic imaging synchronous detection device is used for synchronously observing the dynamic change process of the fracturing crack; and the data acquisition unit is used for collecting flow data and pressure data, establishing a pressure-flow curve to obtain crustal stress data, and collecting dynamic change process data of fracturing cracks to determine the magnitude and direction of crustal stress.

A flow sensor sub-assembly for sensing flow of a fluidic medicament is disclosed. The flow sensor sub-assembly includes a first spring contact and a second spring contact. The spring contacts are secured to a base that has a circuit for conducting an electrical signal to and from the spring contacts to a microprocessor. The first spring contact is in electrical communication with a first piezo element and the second spring contact is in electrical communication with a second piezo element. The first spring contact has a first contact force against the first piezo element and the second spring contact has a second contact force against the second piezo element, and the first and second contact forces are equivalent. A circuit board for interfacing to a flow sensor having a plurality of piezo elements for transmitting a flow signal indicative of flow of fluidic medicament is also disclosed.

The invention discloses a real-time monitoring control system based on a thermal flow sensor and a controller, and relates to the technical field of sensor monitoring. According to the real-time monitoring control system based on the thermal flow sensor and the controller, the method comprises the steps that S1, sensor monitoring data and historical statistical data are preprocessed; s2, lagging and response time dynamic characteristics are extracted; performing modal decomposition, phase estimation, peak calculation and steady-state noise analysis; s3, executing phase compensation, peak value recovery and enhancement compensation judgment; recording a residual sequence and a compensation parameter, and outputting optimized flow data; s4, constructing a credibility interval and dynamic consistency score synthesis control credibility mark; and executing security constraint and prediction filtering and archiving. The problems that an existing thermal flow sensor generates obvious phase lag and peak smoothing distortion due to the influence of thermal diffusion thermal inertia under the rapid fluctuation and pulsation working conditions, and the real-time monitoring precision and the closed-loop control stability are difficult to guarantee due to the lack of an online dynamic response analysis and compensation mechanism are solved.

Systems and methods of in situ unclogging a working channel in a medical device during a procedure are disclosed. An exemplary unclogging system comprises a flow sensor to sense a flow rate through a working channel, and a control module to detect a channel state indicating a presence or absence of clogging based on the flow rate. In the presence of channel clogging, the control module can control one or more of an irrigation source or a suction source to provide respectively irrigation fluid or suction pressure to unclog the obstructed channel. The control module can adjust one or more of an irrigation flow rate or a suction flow rate through the working channel to maintain a desired pressure of the anatomical environment at the anatomical site, or to maintain a desired flow condition in the working channel, during the procedure.

The invention discloses a constant-pressure constant-temperature energy-saving water supply control system for domestic hot water, particularly relates to the field of building water supply and drainage and heat energy control, and comprises a signal capture module, a risk early warning module, a buffer release module, a pre-judgment adjustment module and a state reconstruction module. The signal capturing module is used for acquiring real-time flow and real-time pressure of a water supply pipeline and a water return pipeline by arranging a flow sensor and a pressure sensor on the water supply pipeline and the water return pipeline respectively, then counting the real-time flow and the real-time pressure according to a time sliding window, and outputting time sequence data; according to the invention, a closed-loop control process of time sequence data capture, disturbance data identification, buffer water body release, pump set operation interval determination and compensation distribution result output is executed in sequence in a sudden water consumption scene, so that real-time and stable temperature and pressure control is realized at a user side; therefore, the problem of constant-temperature and constant-voltage failure caused by feedback lag in the prior art is solved.

Systems and methods of in situ unclogging a working channel in a medical device during a procedure are disclosed. An exemplary unclogging system comprises a flow sensor to sense a flow rate through a working channel, and a control module to detect a channel state indicating a presence or absence of clogging based on the flow rate. In the presence of channel clogging, the control module can control one or more of an irrigation source or a suction source to provide respectively irrigation fluid or suction pressure to unclog the obstructed channel. The control module can adjust one or more of an irrigation flow rate or a suction flow rate through the working channel to maintain a desired pressure of the anatomical environment at the anatomical site, or to maintain a desired flow condition in the working channel, during the procedure.

The invention discloses an aluminum wheel die-casting die temperature closed-loop regulation and control system and method, and belongs to the technical field of aluminum alloy die-casting forming and intelligent control, the system comprises a data acquisition module, specifically a temperature sensor, a flow sensor and a pressure sensor which are arranged at key positions of a die, and the data acquisition module is in communication connection with a prediction module; the prediction module adopts a CNN-LSTM composite neural network model, the prediction module is in communication connection with an optimization decision module and provides a prediction value, the optimization decision module adopts an integrated tree structure Pareto estimator (TPE) and provides an optimal decision to the execution control module, the execution control module is a PLC, and the PLC is connected with the prediction module. And a feedback learning module is also arranged and is used for carrying out online updating on the prediction model and the optimization strategy according to the control effect data. The method can effectively reduce energy consumption and manual intervention cost, and has remarkable practical value and economic value.

An illustrative sensor controller includes: a transmitter, a receiver, a time-of-flight circuit, and a phase shift circuit. The transmitter is configured to provide a drive signal to an ultrasonic sending transducer to generate an acoustic burst. The receiver is configured to receive a response signal from an ultrasonic receiving transducer. The time-of-flight circuit is configured to detect an arrival of the acoustic burst in the response signal and to measure a first time of flight associated with that arrival. The phase shift circuit is configured to measure a phase shift of the acoustic burst in the response signal and to determine a second time of flight corresponding to the phase shift.

Various embodiments are directed to flow sensors and methods of using the same. In various embodiments, a flow sensor for measuring fluid flow within a breathing system may comprise a housing defining a flow channel and comprising: a housing body and a plurality of coupling members, wherein each coupling member defines an opening through the housing body, the plurality of coupling members comprising: a set of coupling members configured for coupling to a suction tube assembly, each of which is fluidly connected with the housing body via one of a plurality of bottom openings provided on a bottom side of the housing body such that the flow sensor facilitates a contaminant extraction operation defined by a contaminant present within the housing being extracted to the suction tube assembly through the coupling members; wherein each of the coupling members is integrally configured as part of the housing.

The utility model provides an unmanned aerial vehicle multi-angle sprinkler head, which relates to the unmanned aerial vehicle field, and comprises a connecting rod and a mounting rack, the side wall of the connecting rod is provided with a first motor, the output end of the first motor is provided with a first transmission shaft, and the upper part of the mounting rack is connected with the first transmission shaft through an adjusting rod; adjusting seats are connected to the two sides of the mounting frame through electric push rods, nozzles are arranged on the adjusting seats through second transmission shafts, second motors are connected to the output ends of the second transmission shafts, and intelligent sensing assemblies are further arranged on the connecting rods and the mounting frame. According to the utility model, a wind speed sensor in the intelligent sensing assembly is used for detecting wind speed, a laser radar sensor is used for carrying out terrain scanning, a flow sensor is used for detecting the flow of the nozzle, and data of a plurality of sensors are combined, so that the control module can more comprehensively know the working environment, and the angle of the nozzle can be more intelligently adjusted; the practicability of the device is improved.

The present invention discloses a portable respiratory system including a housing, a divider, a flow sensor, an elastic member, a rigid member, a blower and a flow limiter. By configuring the divider in the housing, the system is partitioned into an upper chamber and a lower chamber, wherein the flow sensor is located in the upper chamber and the elastic member is located in the lower chamber. The rigid member is fixed in the lower chamber, and defines an air inlet flow channel, a lateral flow channel, a transmission flow channel, and an air outlet flow channel. The blower is disposed in the elastic member and is operable to receive an airflow from the transmission flow channel and generate a positive pressure airflow. The flow limiter includes multiple pipes and is located in the lateral flow channel.