42 results about "Ultrasonic doppler" patented technology

The invention provides a method and a system for accurately regulating and controlling waste gas denitration air quantity of a glass melting furnace. According to the method, an ultrasonic Doppler sensor group is arranged around a glass melting furnace flue, ultrasonic beams are synchronously emitted to collect flow velocity pulsation data required by exhaust gas denitration air volume, time sequence waveforms are decomposed to generate multi-dimensional frequency characteristics, and the multi-dimensional frequency characteristics are aggregated into a multi-dimensional flow velocity vector representing a flow field state; vector deviation is synchronously corrected through space coordinate alignment and a time sequence, and difference variable quantity is extracted and fused to generate a flow field thermodynamic diagram; establishing a time-space correlation model of the multi-dimensional flow velocity vector and the thermodynamic diagram, predicting an air volume adjusting threshold value meeting the denitration requirement, and converting the air volume adjusting threshold value into a fan rotating speed control signal to drive an execution mechanism; and according to waste gas pulsation response data caused by fan rotating speed change and thermodynamic diagram updating frequency relevance, multi-dimensional flow velocity vectors are dynamically adjusted to form closed-loop regulation and control. According to the application, the dynamic demand of the denitration air volume and the millisecond-level closed-loop response executed by the fan are realized, the flue gas purification efficiency is improved, and the energy consumption is reduced.

The invention provides a low-power-consumption cooperative sewer water body integrated monitoring method. The method comprises the following steps: carrying out model selection and deployment on sensing node hardware of an adaptive scene; a low-power-consumption internet of things network topology and power supply design; a time-sharing triggering acquisition strategy of the multi-modal data is carried out; node-level environment self-adaptive data calibration is carried out; node-level flow velocity-stink association anomaly recognition is carried out; carrying out network-level data fusion and validity verification; collaborative traceability, diffusion simulation and linkage control are carried out. According to the invention, the problems of data distortion, difficulty in source tracing of pollution sources, short equipment endurance and response lag caused by independent collection of flow and stink and environmental interference in traditional sewer monitoring are solved; the integrated effect of ultrasonic Doppler and electronic nose cooperative monitoring, environment self-adaption accurate calibration, odor source rapid positioning and diffusion simulation and low-power-consumption and long-endurance linkage control is achieved.

The invention relates to the technical field of fluid dynamics experimental measurement, and discloses a water tank experimental device and method for muddy current transportation of micro-plastics, the device comprises a water tank device main body, an optical measurement subsystem and an ultrasonic Doppler flow velocity measurement system, an ultrasonic emission path and an optical measurement window are overlapped in space, and the optical measurement subsystem and the ultrasonic Doppler flow velocity measurement system are arranged in the water tank device main body. The method comprises the following steps: performing first fluorescence labeling and second fluorescence labeling on the micro-plastic particles and the sediment particles; synchronously acquiring optical data and acoustic data in the cross window; respectively establishing a concentration correction function and a flow velocity correction function by taking acoustic backscattering intensity data and flow velocity data as references in the cross window; applying the correction function to the whole optical window to obtain a globally corrected concentration field and a globally corrected flow velocity field; and distinguishing and quantifying the micro-plastics and the sediments based on the corrected data. Through the cross correction principle, the problem of signal distortion of optical measurement in high-turbidity fluid is solved.

The invention provides a flexible ultrasonic Doppler patch, and relates to the field of wearable health monitoring equipment. The flexible ultrasonic transducer comprises a flexible substrate layer, an electrode layer and a plurality of ultrasonic transducers, the electrode layer and the ultrasonic transducer are packaged by the flexible substrate layer; the flexible substrate layer comprises two slopes of which the slope tops are connected; the ultrasonic transducer is divided into two ultrasonic working groups, each ultrasonic working group further comprises a vertical connecting unit used for the signal electrode layer and the grounding electrode layer, and the two ultrasonic working groups are arranged on the two slopes respectively. The device can be directly attached to the surface of the human body in a non-pressure mode, it is ensured that an ultrasonic beam can be incident to a subcutaneous target blood vessel at the optimal incidence angle, a high-precision and low-cost solution is provided for wearable Doppler ultrasonic equipment, and the daily preliminary screening and prevention capacity of cardiovascular diseases is enhanced.

The invention discloses an electromagnetic flowmeter flow prediction method based on magnetic sensor identification analysis, and relates to the technical field of electromagnetic flow measurement, and the method comprises the steps: collecting a magnetic field intensity signal in real time, modulating an excitation coil based on a high-frequency pulse to generate an alternating magnetic field, and outputting an original magnetic field signal matrix containing space-time information; the flow velocity field predicted value and the attention weight vector are jointly optimized through a gradient propagation algorithm to minimize the mean square error of the predicted flow velocity and the ultrasonic Doppler reference value, and a calibrated flow value is output; and calculating a real-time confidence score based on the calibrated flow value, and when the score is lower than a preset threshold, performing online fine tuning on the attention weight vector by using an elastic weight consolidation algorithm, and outputting an anti-interference flow prediction result. The differential Maxwell equation constraint is embedded, the flow velocity field and the material parameters are optimized in a combined mode, and dual verification of the measurement result of the electromagnetic flowmeter on the aspects of data precision and physical rules is achieved.

The invention relates to an open channel clogging real-time diagnosis system and method based on voiceprint and flow velocity fusion, and the method comprises the steps: a plurality of monitoring nodes are arranged along an open channel, the monitoring nodes are arranged at intervals according to the length of the channel, the terrain and the conditions of easy-to-deposit sections, and each monitoring node at least comprises an underwater sound sensor installed underwater on the side wall of the channel, the ultrasonic Doppler flow velocity sensor is installed at the position about 0.3 m underwater on the side wall of the channel, and the pressure type water level gauge is installed at the bottom of the channel and used for measuring the water level. According to the invention, various sensors are used for continuously monitoring the operation state of the open channel for 7 * 24 hours, and a multi-source information fusion acquisition mode is adopted, so that abnormal signals can be detected at the initial stage of clogging, intelligent diagnosis can be carried out, the clogging position can be positioned, early warning can be given out, and the inspection is more timely than manual inspection. And timely early warning and rapid positioning are helpful for the management department to take measures as soon as possible, so that small problems are prevented from being evolved into large dangerous cases, and safe operation of the channel is guaranteed.

1. The name of the design product: the connecting seat of the probe cover of the ultrasonic Doppler probe. 2. The use of the design product: the overall use is to protect the probe of the ultrasonic Doppler probe from inserting into the rectal lesion during rectal surgery; the local use is to connect the probe cover of the ultrasonic Doppler probe to the main machine of the ultrasonic Doppler probe. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1. 5. Other circumstances that need to be explained: the dashed area does not belong to the appearance design content claimed.

The invention discloses a multifunctional detection device for cerebral apoplexy screening, which comprises a main body, an opening and closing door, a lifting rod and an ultrasonic probe, the front end of the main body is rotatably provided with the opening and closing door, the right side of the main body is fixedly provided with the lifting rod, and an ultrasonic Doppler blood flow detector is placed in the middle of the interior of the main body. An electronic sphygmomanometer and a blood glucose tester are arranged at the left end and the right end in the main body respectively, and a weighing machine is arranged in the upper end of the main body. According to the multifunctional detection device for cerebral apoplexy screening, the blood flow speed in the body of a patient can be detected through the ultrasonic Doppler blood flow detector, then the blood glucose of the patient is detected through the blood glucose tester, the detection result can be transmitted to the interior of the ultrasonic Doppler blood flow detector, and self-evaluation of high-risk factors is completed; the detection content of specific markers in the body of a patient is detected through the medical consumables, and the use convenience of the device is improved through mutual cooperation of the devices.

The application discloses a mass flow calibration method and system, comprising: connecting a Coriolis mass flow meter to a calibration bench pipeline, and installing an intelligent sensor containing an ultrasonic Doppler array on the upstream side in the axial direction; starting a liquid supply pump to pump calibration fluid, controlling the ultrasonic Doppler array to perform cross-section scanning on the fluid to obtain dynamic flow profile time series data; inputting the dynamic flow profile time series data into a pre-trained fluid relaxation state prediction machine learning model, outputting a steady state arrival time point from the fluid relaxation state prediction machine learning model; triggering a calibration sampling instruction at the steady state arrival time point, obtaining a sampling mass flow value and comparing it with a reference standard flow value to complete calibration. The application solves the problem of systematic error in calibration sampling caused by non-steady state changes in flow pattern during the shear thinning recovery period of high viscosity fluid.

The invention relates to the technical field of petroleum drilling safety monitoring, in particular to an ultrasonic Doppler gas cut monitoring and evaluating method and a simple simulation experiment system. Comprising the following steps: S1, signal acquisition and gas content calibration; s2, performing interval division; s3, performing interval statistics; s4, establishing a quantitative mapping model; and S5, performing real-time monitoring and model optimization. According to the method, the random interference can be effectively suppressed, the focus point is transferred to the overall trend of a data set from a discrete single data point through interval division-statistical analysis, the adverse effects caused by bubble random motion and measurement noise are remarkably reduced, and the core problem of large discreteness of frequency shift signals is solved; quantitative monitoring can be realized, a quantitative evaluation relation model between Doppler frequency shift and gas content is successfully established, and the crossing from qualitative identification to quantitative evaluation is realized; the overall trend is extracted through the statistical thought, the anti-interference capacity is high, rapid online detection and evaluation of the gas content can be achieved, and technical support is provided for early warning of gas cut.

1. The name of the design product: the main machine of ultrasonic Doppler detector. 2. The use of the design product: for holding and operating in the operation of rectal diseases. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention relates to the technical field of lower limb venous thrombosis prevention, in particular to a lower limb venous thrombosis prevention system based on Doppler ultrasonic blood flow detection feedback, which comprises an upper computer, a single chip microcomputer system control device, an inflation and deflation device, a flexible ultrasonic blood flow velocity detection sensor and a lower limb venous thrombosis prevention device, the upper computer is used for acquiring the blood flow velocity and sending a control instruction to the single chip microcomputer system control device; the single-chip microcomputer system control device is used for controlling the flexible ultrasonic blood flow velocity detection sensor and the inflation and deflation device to work and can collect ultrasonic Doppler echo signals. The lower limb venous thrombosis prevention device is used for preventing thrombosis; the flexible ultrasonic blood flow velocity detection sensor is used for generating ultrasonic signals and receiving Doppler echo signals of the ultrasonic signals. The blood flow velocity can be accurately calculated, the flexible and portable lower limb venous thrombosis prevention device is used for preventing thrombosis and monitoring the treatment effect in real time, and the lower limb venous thrombosis prevention device is easy to operate and convenient to use.

The application provides a marine engineering water surveying device with positioning function, and relates to the field of water surveying.The marine engineering water surveying device with positioning function comprises a ship body, the inside of the ship body is fixedly connected with a supporting pipe, and the inside of the supporting pipe is provided with a lithium battery.The marine engineering water surveying device with positioning function is composed of a surveying device formed by cooperation of a transmitting transducer, a receiving transducer, an ultrasonic Doppler flowmeter, a tide gauge, a forward and reverse motor, a rotating plate, a temperature sensor, a pressure sensor and a main machine, basic hydrological information of the sea bottom, the shallow layer and the sea surface is collected, the marine hydrological information is collected and surveyed in a three-dimensional surveying mode, and the information collection is ensured to be effective.The GPS positioning device installed on the supporting rod regularly sends positioning information to the main machine and the shore, the position of the staff is ensured to be known by the staff on the shore, and the safety of the staff in the ship body is ensured.

The embodiment of the present application provides a method for adjusting the velocity measurement range of an ultrasonic device and the ultrasonic device. The velocity measurement range of the ultrasonic device is improved. The technical method provided by the embodiment of the present application comprises the following steps: obtaining a first velocity measurement range corresponding to a first imaging parameter, wherein the first velocity measurement range is a maximum velocity measurement range corresponding to the first imaging parameter; when the maximum velocity of the adjusted velocity measurement range is greater than the maximum velocity of the first velocity measurement range, adjusting the first imaging parameter to a second imaging parameter to obtain a second velocity measurement range corresponding to the second imaging parameter; wherein the maximum velocity of the second velocity measurement range is greater than the maximum velocity of the first velocity measurement range.

The invention relates to the technical field of ultrasonic sphygmomanometers, and discloses an ultrasonic sphygmomanometer which comprises a base, a host module and a detection module, the host module and the detection module are assembled on the upper end face of the base, an inner cavity of the detection module is slidably connected with a sealing mechanism, and the back face of the sealing mechanism is sleeved with a storage mechanism; the storage mechanism is connected with the base, a handle is assembled on the front face of the closed arm, and an anti-skid sleeve is connected to the outer portion of the handle in a sleeving mode. According to the ultrasonic sphygmomanometer, the inner cavity of the detection module is supported through the sealing arm, the strength of the detection module is improved, the situation that the detection module is prone to damage and deformation when being impacted, the use effect of the detection module is reduced is avoided, the virus infection risk is prevented from being increased, and workers can conveniently maintain and overhaul the whole sealing mechanism; the overall using effect of the device is improved, and blood pressure data can be accurately obtained according to the blood flow speed and pressure sensor data obtained through the ultrasonic Doppler effect.

The utility model relates to a power supply device of an ultrasonic Doppler diagnostic apparatus with a protection structure, which comprises a protection cover, a protection box, a first bounce-off plate, a second bounce-off plate, a rotating shaft and an L-shaped plate, and the protection cover is provided with a plurality of insertion holes at equal intervals; the first bouncing plate and the second bouncing plate are movably connected to the upper portion and the lower portion of the inner side of the insertion hole through L-shaped plates correspondingly, an included angle is formed in the connecting position of the upper L-shaped plate and the first bouncing plate, an included angle is also formed in the connecting position of the lower L-shaped plate and the second bouncing plate, and connecting pieces are arranged at the included angles of the connecting positions. The connecting pieces are connecting rods, each connecting piece is provided with at least one springback piece, the springback pieces are torsional springs, one sides of the springback pieces abut against the corresponding sides of the first bounce-off plate and the second bounce-off plate respectively, and the other sides of the springback pieces abut against the upper L-shaped plate and the lower L-shaped plate respectively. Therefore, the first bouncing plate and the second bouncing plate are restored to the original positions through the springback piece after being bounced off.

1. Name of the product in this design: Ultrasonic Doppler Fetal Monitor (FS Series). 2. Purpose of this design: For continuous monitoring of fetal heart rate, fetal movement and maternal uterine contraction pressure during the perinatal period. 3. The key design features of this product are its overall shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a kind of based on flexible ultrasonic Doppler and AI blood vessel tracking blood flow noninvasive monitoring device, belong to intelligent medical monitoring field.The device includes: flexible ultrasonic Doppler sensor, for attaching body surface signal acquisition;Processing unit and the artificial intelligence analysis module in it, for automatic identification tracking blood vessel and calculate its cross-sectional area and blood flow velocity, and then obtain real-time blood flow;And optional pressure adaptive stabilization module, for dynamic adjustment of adhering pressure according to signal quality to maintain monitoring stability.The application realizes the continuous, noninvasive, automatic monitoring of arterial blood flow, with the advantages of high precision, strong anti-interference, convenient for clinical integration, suitable for perioperative period and critical patient hemodynamic management.

This application provides a continuous ultrasonic Doppler velocimetry method, terminal device, and storage medium. The velocimetry method includes the following steps: S100, generating a first signal and a second signal, wherein the first signal is a triangular wave digital signal and the second signal is a sine wave digital signal; S200, converting the first signal into an excitation signal; S300, receiving the excitation signal and transmitting ultrasonic waves to the object under test; S400, receiving the ultrasonic echo signal from the object under test; S500, inputting the echo signal and the second signal into a first function to obtain a mixed signal; S600, performing a Fourier transform on the mixed signal to obtain Doppler frequency shift parameters; S700, inputting the Doppler frequency shift parameters into a second function to obtain the running speed of the object under test. Steps S100, S600, and S700 are all completed by the same system chip. This solution uses the same system chip to complete the generation of triangular wave digital signals and sine wave digital signals and speed calculation, which greatly improves the computational efficiency.

The invention relates to the technical field of water-based ink dispersion control, in particular to a dynamic temperature field collaborative optimization method for a water-based ink dispersion process, which comprises the following steps: synchronously acquiring temperature field distribution data and shear field distribution data through a distributed fiber grating temperature sensor and an ultrasonic Doppler velocimeter; and constructing multi-dimensional field data with a unified timestamp and space coordinates. Calculating temperature field intensity gradient data and shear field intensity gradient data based on the multi-dimensional field data, analyzing and identifying a mismatch region through a field cooperation angle, establishing a dynamic coupling relation model in combination with a deep neural network, generating field cooperation optimization parameters, and performing field cooperation optimization. And forming a regional temperature compensation strategy by adopting rule engine analysis, a multi-objective optimization algorithm and a feasibility verification mechanism, and converting the regional temperature compensation strategy into a control instruction sequence of the multi-channel temperature control system. Through real-time monitoring and fuzzy PID dynamic adjustment, continuous cooperation of a temperature field and a shear field is realized, and the dispersion efficiency and the product stability are improved.

The invention provides a method for evaluating fetal ultrasonic Doppler signal quality based on a dense network. Firstly, the Mel spectrum of a signal is extracted by adopting time-frequency transformation, and the feature representation of the signal is optimized; on the basis of the characteristics, a dense connection network is constructed, and due to the characteristic of direct connection between layers, the network can effectively improve feature transmission and reuse, meanwhile, the parameter quantity is reduced, and the gradient disappearance problem is avoided. Furthermore, a coordinate attention mechanism is introduced into the dense network, the attention of the model on key features is enhanced, and the accuracy of evaluation is improved. In addition, a multi-scale module is constructed by adopting depth separable convolution with different expansion rates, so that the model can comprehensively capture signal features. And finally, evaluating and optimizing the model through a five-fold cross validation method so as to ensure the generalization ability and evaluation reliability of the model. According to the comprehensive technical scheme, an efficient and accurate new method is provided for quality evaluation of the fetal ultrasonic Doppler signals.

The application provides a glass melting furnace waste gas denitration air volume precise regulation and control method and system. Among them, the method is to arrange an ultrasonic Doppler sensor group around the glass melting furnace flue, synchronously emit ultrasonic beams to collect flow velocity fluctuation data of waste gas denitration air volume demand, decompose time sequence waveforms to generate multi-dimensional frequency characteristics, and aggregate into a multi-dimensional flow velocity vector representing the flow field state; correct the vector deviation by spatial coordinate alignment and time sequence synchronization, extract the difference change amount to generate a flow field heat map; establish a space-time correlation model of the multi-dimensional flow velocity vector and the heat map, predict the air volume regulation threshold that meets the denitration demand, convert it into a fan speed control signal to drive the actuator; according to the correlation between the waste gas fluctuation response data caused by the change of the fan speed and the heat map update frequency, dynamically adjust the multi-dimensional flow velocity vector to form a closed-loop control. The application realizes the dynamic demand of denitration air volume and the millisecond closed-loop response of the fan execution, improves the flue gas purification efficiency and reduces the energy consumption.

This invention belongs to the field of blood flow detection technology, specifically relating to a detection and analysis method and system for an ultrasonic Doppler blood flow detector. By configuring a pressure sensor and a coupling agent detection terminal on the ultrasonic probe, the contact pressure between the probe and the skin and the coupling agent thickness can be collected in real time during blood flow detection. Simultaneously, image quality parameters are extracted from the blood flow ultrasonic images, and the contact pressure of the probe and the amount of coupling agent used are dynamically adjusted based on these parameters, achieving precise control of the blood flow detection process and ensuring the stability and high quality of the ultrasonic images. In addition, by precisely controlling the probe contact pressure and coupling agent thickness, the effective blood flow velocity is extracted from the blood flow ultrasonic images and combined with physiological indicators to identify abnormal blood flow velocities. This operation not only ensures the quality of the ultrasonic images but also allows for further accuracy evaluation of the blood flow detection results, enabling timely detection and identification of abnormalities.

This invention discloses a mechanical Doppler signal generating device and its velocity measurement method based on a single 360-degree helical blade. The device includes a single 360-degree helical blade, a support rod, a base, and an ultrasonic probe. The 360-degree single helical blade is mounted on the base via the support rod and is driven to rotate by a motor. An ultrasonic probe is positioned directly in front of the fan-shaped surface of the 360-degree helical blade for transmitting and receiving ultrasonic signals. This invention features a simple structure, small size, high speed, and facilitates the generation of adjustable, high-quality Doppler echo signals. It effectively reduces costs and is highly suitable for teaching and research, as well as for verifying ultrasonic Doppler velocimetry systems.

1. The name of the design product: the probe of ultrasonic Doppler detector. 2. The use of the design product: detecting the arterial blood vessel in the operation of rectal disease. 3. The design points of the design product: the shape of design 1 and design 2; the combination of color and shape of design 3. 4. The picture or photo showing the design points most: the perspective view of design 1. 5. Design 1 is designated as the basic design. 6. Other circumstances needing to be explained: design 3 requests the protection of color.

This invention relates to the field of medical device technology and discloses a multi-dimensional biomimetic experimental device for whole-body vascular interventional shunt stents, comprising a mobile platform and a multi-dimensional detection matrix: a stent plate is fixedly connected to one side of the mobile platform, a stent rod is fixedly connected to the outside of the stent plate, a main trunk segment is provided inside the stent rod, and multiple lateral trunk segments are provided outside the main trunk segment; a reservoir, a peristaltic pump, and a pressure control valve are fixedly connected to the outside of the stent plate; a disassembly component one is provided at one end of the main trunk segment, and a disassembly component two is provided at one end of each lateral trunk segment or branch segment; the multi-dimensional detection matrix includes a miniature pressure sensor, an ultrasonic Doppler blood flow velocity measurement module, and a particle image velocity measurement system. Through the main trunk segment, lateral trunk segment, and branch segment, combined with the rapid sealing and snapping of modular disassembly components one and two, high-precision biomimetic simulation of the vascular bed in different parts of the human body is achieved.

The invention relates to a blood flow critical closing pressure obtaining device, equipment, a medium and a system based on the Doppler technology, and belongs to the field of medical instruments. The device comprises a first acquisition module used for acquiring arterial blood flow of a preset part of a target object through an ultrasonic Doppler blood flow measurement technology; the second acquisition module is used for acquiring the average blood pressure MAP of the preset part corresponding to the arterial blood flow within the same time of acquiring the arterial blood flow; the determining module is used for fitting a linear function which takes the arterial blood flow as an independent variable and MAP as a dependent variable according to the arterial blood flow and the MAP corresponding to the arterial blood flow; and then calculating a first value of the MAP when the arterial blood flow is zero according to the linear function, and determining the first value as the critical closing pressure of the preset part of the target object. According to the technical scheme, the problem that no reliable method for measuring the critical closing pressure exists clinically at present can be solved.

The invention discloses a mass flow calibration method and system, and the method comprises the steps: installing and connecting a Coriolis mass flow meter to a calibration rack pipeline, and axially installing an intelligent sensor comprising an ultrasonic Doppler array at the upstream side; starting a liquid supply pump to pump calibration fluid, and controlling an ultrasonic Doppler array to perform section scanning on the fluid to obtain dynamic flow velocity profile time sequence data; inputting the dynamic flow velocity profile time series data into a pre-trained fluid relaxation state prediction machine learning model, and outputting a steady state arrival time point by the fluid relaxation state prediction machine learning model; and triggering a calibration sampling instruction at the steady-state arrival time point, obtaining a sampling mass flow value, and comparing the sampling mass flow value with a reference standard flow value to complete calibration. The problem that systematic errors exist in calibration sampling due to flow pattern unsteady-state change of high-viscosity fluid in the shear thinning recovery period is solved.

1. The name of the design product: the outer cover of the probe of ultrasonic Doppler detector. 2. The use of the design product: to protect the probe of ultrasonic Doppler detector when it is inserted into the rectum of the patient. 3. The design points of the design product: the shape. 4. The picture or photo showing the design points: the perspective view 1.

1. The name of the design product: ultrasonic Doppler probe. 2. The use of the design product: used for detecting arterial blood vessels and expanding intestinal tract in rectal disease surgery. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.