1667 results about "Pressure sensing" patented technology

The invention discloses an intelligent pressure self-adaptive anti-bedsore nursing mattress system which comprises a flexible pressure sensing layer configured on the surface of a mattress and used for monitoring pressure distribution data of all parts of the body of a lying person in real time; the multi-air-chamber dynamic adjusting structure comprises a plurality of independent air chambers capable of being inflated and deflated, and the air chambers are distributed in the mattress and used for adjusting the supporting pressure of the corresponding areas according to instructions; the edge intelligent control module analyzes data based on a preset artificial intelligence algorithm to predict a bedsore occurrence risk area, and generates a control instruction according to a prediction result to drive the multi-air-chamber dynamic adjustment structure to adjust the pressure of each air chamber; and the environment regulation and control system comprises a temperature and humidity sensor and a microenvironment regulation device. Through real-time body pressure monitoring, AI risk prediction, dynamic pressure regulation and temperature and humidity coordinated regulation and control, local pressure can be remarkably reduced, a high-risk area can be early warned in advance, and a local microenvironment is improved, so that bedsores are effectively prevented, and nursing dependence is reduced.

The invention discloses a wearable plantar pressure and three-dimensional gait analysis system, and relates to the technical field of gait analysis, the system comprises a wearable in-shoe plantar pressure analysis subsystem and a three-dimensional gait analysis subsystem; the wearable in-shoe plantar pressure analysis subsystem comprises a pressure sensor module, a pressure integration module, an intelligent transmission module, a detection software module, a power supply module, an instantaneous pressure and balance detection module, a standing balance detection module, a balance and gait detection module and a cloud server; the three-dimensional gait analysis subsystem comprises a hardware unit and a software unit; according to the invention, a wearable plantar pressure and three-dimensional gait analysis collaborative system is constructed, bidirectional verification compensation is realized by means of data fusion of two subsystems, and traditional single-dimensional limitation is broken; pressure sensing and a double-view reconstruction technology are fused, data are dynamically captured, and bidirectional error correction is carried out; the limitation of traditional equipment is solved, the evaluation accuracy and robustness are improved, and a quantitative basis is provided for clinical diagnosis, rehabilitation and the like.

The utility model relates to an armored temperature and pressure integrated sensor, and the sensor comprises an armored housing which comprises a housing body and a sleeve connected with the housing body, and the sleeve is internally provided with a closed cavity; the circuit board is arranged in the armored shell; the temperature sensing element is mounted in the closed cavity; the support is arranged in the armored shell and comprises a support body, a metal terminal is arranged in the support body, one end of the metal terminal extends into the armored shell to be connected with the temperature sensing element, and the other end of the metal terminal extends out of the support body to be connected with the circuit board; and the pressure sensing element is mounted in the bracket and connected with the circuit board, and the pressure sensing element is used for detecting the pressure of an external pressure source. While temperature and pressure are measured synchronously, the excellent performance of the armored shell effectively protects internal elements from external physical impact, electromagnetic interference, severe temperature fluctuation and the like, it is ensured that the sensor can work stably and reliably in a complex environment and a complex medium, and the measurement precision is ensured.

The invention provides an intelligent detection method and system for an urban sewer pipeline, and the method comprises the steps: synchronously collecting pipeline data through laser, vision, ultrasound and a pressure sensing array, and generating aligned multi-source data through space-time registration; edge end defect preliminary screening is realized by using a lightweight AI model, and high-risk data is screened and uploaded to a cloud end; a pipeline digital twin model is constructed based on point cloud splicing and feature recognition, a multi-modal fusion neural network is adopted to realize accurate defect diagnosis, and a detection path is dynamically optimized in combination with an ant colony algorithm. According to the method, the technical problems that the adaptability is poor and the omission ratio is high in a complex sewer pipeline environment and multi-source data fusion analysis and active early warning cannot be realized by a traditional method can be solved.

The invention provides a device and method for measuring the flow velocity and flow of gas in a pipeline, and particularly relates to the technical field of measuring instruments, and the device comprises a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

The invention discloses a badminton player action posture analysis system and method based on multi-sensor fusion, and relates to the technical field of athletic training auxiliary systems.The system comprises a wearable sensing subsystem, an environment sensing subsystem and a central processing and feedback subsystem; the wearable sensing subsystem is arranged on an inertia measurement unit and a pressure sensing insole of a body to collect movement inertia and plantar pressure data; the environment perception subsystem collects global videos through multiple cameras. The central processing and feedback subsystem performs synchronous processing on multi-source data, adopts a hierarchical fusion algorithm, restrains inertia integral drift by utilizing a plantar contact state, reconstructs a three-dimensional skeleton posture and a motion trail in combination with visual key points and skeleton restraint, drives a digital twin model, compares with a standard motion model, and performs three-dimensional motion control on the three-dimensional skeleton posture and the motion trail. Quantitative evaluation results such as joint angle deviation, time sequence difference and pressure center track are generated, and visual feedback is performed through a display device and an augmented reality terminal for badminton training evaluation and technical deviation correction.

The invention relates to the technical field of intelligent old-age care and health monitoring. The invention provides a tumble detection and emergency response system for the elderly at home based on multi-modal sensing fusion, and the system comprises a sensing module which is used for collecting the multi-modal data of the elderly and at least comprises a depth camera array, an inertial measurement unit, a millimeter wave radar, an audio sensor array, and a pressure sensing pad; the decision-making module is used for receiving, synchronizing and processing the multi-modal data, comprises a dynamic confidence fusion engine and is used for calculating a dynamic confidence score for the data streams acquired by the sensing module in real time and carrying out information fusion through a collaborative game algorithm based on the dynamic confidence score of each data stream to obtain a multi-modal data fusion result; generating a fall detection decision with a situation tag; and the response module is used for executing grading emergency response operation and comprises a local alarm unit, a remote communication unit and an interface unit linked with a community service and emergency center.

The invention discloses a flexible pressure sensor based on ionized hydrogel and a preparation method thereof. The sensor adopts a sandwich layered structure of a flexible composite electrode, an ionized water gel dielectric layer and a flexible composite electrode, ionized water gel is used as a dielectric layer, and an upper flexible electrode and a lower flexible electrode are prepared from a multi-walled carbon nanotube / polydimethylsiloxane (MWCNTs / PDMS) composite material; the surface, making contact with the dielectric layer, of the electrode is copied through an abrasive paper template method to form a micron-sized rough structure. Under the action of external pressure, the effective contact area between the microstructure electrode and the ionized water gel dielectric layer and the equivalent electrode distance change, so that the interface electric double-layer capacitance is regulated and controlled, and high-sensitivity conversion from a pressure signal to a capacitance signal is realized. The flexible pressure sensor is simple in structure and excellent in flexibility, can be further integrated into a pressure sensing array, and is suitable for the fields of wearable electronics, electronic skin, man-machine interaction and the like.

The invention discloses a water supply network leakage positioning system and method based on sound wave-pressure cooperation, and belongs to the technical field of water supply network monitoring and leakage control. The system comprises a pressure sensing layer, a cooperative control unit, a sound wave sensing layer, an underwater sound cooperative positioning solver and a result output module. The pressure sensing layer monitors the pressure of a pipe network in real time through pressure sensors which are sparsely deployed, and identifies an abnormal area; the cooperative control unit dynamically activates the acoustic sensors of the minimum set; the underwater sound cooperative positioning resolver corrects sound wave parameters through a hydraulic model, and a leakage point is accurately positioned through sound wave time difference inversion in a pressure abnormal area; the result output module pushes the positioning result, the leakage amount and the maintenance scheme to the operation and maintenance platform; and pressure early warning, sound wave accurate measurement and joint inversion are carried out.

The flushing valve comprises a valve body and a pressure sensing assembly, the valve body is provided with a water inlet end, a water outlet end and a water passing cavity communicated with the water inlet end and the water outlet end, one side of the valve body is provided with a pressure sensing channel, the pressure sensing channel is communicated with the water passing cavity, and the pressure sensing assembly comprises a piston rod, an elastic piece and a potentiometer. The piston rod is arranged in the pressure sensing channel and arranged in the axial direction of the pressure sensing channel, the elastic piece provides axial elastic force for the piston rod, the direction of the elastic force is opposite to the water inlet direction of the pressure sensing channel, a movable contact of the potentiometer is connected with the piston rod, and water pressure in the pressure sensing channel can drive the piston rod to overcome the elastic force to push the movable contact. Water enters the pressure sensing channel and pushes the piston rod, the piston rod compresses the spring and pushes the potentiometer, the resistance voltage of the potentiometer generates related changes, and water pressure detection is achieved.

The invention discloses a self-adaptive apple maturity lossless picking flexible claw and a picking method. The device comprises a base assembly, and a visual recognition module, a flexible clamping jaw assembly, a distributed pressure sensing module, a transmission execution module and a control unit are integrated on the base assembly. And the visual module adopts a depth camera and a YOLO11n model, judges the maturity grade in real time based on the apple red area proportion and is matched with the corresponding grabbing threshold force. The pressure sensing module is a thin film pressure sensor, and multi-point pressure feedback is achieved through a plurality of pressure detection points. The transmission module adopts a single motor to drive a lead screw nut lifting table, opening and closing of clamping jaws are synchronously controlled, the structure is light and simple, and cost is low. The picking method follows the process of recognition, matching, force control and picking, a cutter is not needed, lossless and high-success-rate self-adaptive picking is achieved, the problem of damage or failure caused by traditional fixed force control is effectively solved, the method is suitable for dense orchards, and the intelligent and lossless levels of apple picking are improved. The control unit is low in response delay and small in overshoot, and it is ensured that the grabbing force is accurately matched with the fruit state.

The invention relates to the technical field of oil drilling and production well control equipment, in particular to a composite sealing rotary blowout preventer capable of regulating and controlling pressure while drilling. The blowout preventer comprises an execution module, a transmission module and a pressure sensing module. According to the execution module, radial extrusion force is applied to the rubber core through a radial shrinkage mechanism composed of a rotating ring, a connecting rod and a push block, meanwhile, a piston outer sleeve is matched with an inner shell in the axial direction under the limiting effect of an adaptive ring, axial compression force is applied to the rubber core, and therefore composite sealing of the rubber core is achieved. The transmission module drives a transmission gear to be meshed with a gear seat through a motor and drives a rotating ring to rotate, and power is transmitted to the radial contraction mechanism. The pressure sensing module is used for monitoring wellhead pressure in real time and actively triggering the generator to operate according to pressure changes, and self-adaptive adjustment of the sealing state is achieved. The device is suitable for the PCWD working condition, active sealing adjustment can be achieved based on wellhead pressure changes, the sealing reliability is improved in an axial and radial composite compression mode, and the device is particularly suitable for complex stratums, pressure fluctuation and continuous drilling scenes.

The invention relates to the technical field of sensors, in particular to a temperature and humidity pressure sensor which comprises a port seat, a PCB mainboard supporting seat, a PCB mainboard, a terminal seat assembly and a shell, the port seat is provided with a pressure detection special channel and a temperature and humidity detection special channel which are separated, and a pressure sensing module is mounted through a sensing position at the top of a boss. A traditional complex inner plane machining structure is abandoned, and the special channel meets the requirements of two types of detection on the fluid state through differential design. The PCB mainboard supporting seat is provided with a positioning structure and a through groove, accurate positioning and stable electric connection of the PCB mainboard and the sensing module are guaranteed, the terminal seat assembly adopts a buckle and guiding design to improve the assembling efficiency, reliable protection is achieved in cooperation with a double-sealing structure, synchronous and accurate detection of temperature, humidity and pressure parameters is achieved on the whole, assembling is convenient, the production cost is low, and the product quality is improved. The method is suitable for various working condition scenes; the problems that the detection precision of the same flow channel of an existing integrated sensor is mutually disturbed, and the machining technology is complex can be effectively solved.

The invention relates to the technical field of washing machine inner barrel testing, and discloses a washing machine inner barrel dynamic balance rapid testing tool which comprises a base and a roller. One end of a hydraulic cylinder is fixedly connected with a first rack, one side of the first rack is in meshed connection with a connecting gear, and one side of the connecting gear is fixedly connected with a threaded rod; the outer portion of the threaded rod is in threaded connection with a connecting base, the inner side of the connecting base is fixedly connected with a detection ring, the inner side of the detection ring is fixedly connected with two pressure sensing detection assemblies, a second motor is started, a first gear drives a second gear to rotate, the second gear drives a roller to rotate through a rotating shaft, a prism block and a connecting shaft, and then a hydraulic cylinder is started; the hydraulic cylinder drives the first rack to move back and forth, the first rack moves to drive the connecting gear and the threaded rod to rotate, the threaded rod drives the connecting seat to move, and the detection ring drives the pressure sensing detection assembly to move, so that the dynamic balance of the roller can be rapidly tested.

The invention relates to the technical field of sensors, and discloses a decoupling method of a temperature and pressure sensor, and the sensor comprises an F-P resonant cavity and a pressure sensing diaphragm with a fiber bragg grating. The method comprises the following steps: S1, transmitting a wide spectrum signal to a sensor, and collecting a reflection spectrum of the sensor; s2, performing baseline correction and noise reduction processing on the reflection spectrum, and extracting characteristic parameters; s3, if the characteristic parameters exceed the preset range, failure early warning is carried out; establishing and substituting the characteristic parameters into a physical model, performing multi-parameter optimal estimation, and outputting temperature and static pressure; and S4, if the characteristic parameters exceed the preset range, failure early warning is carried out. In order to enable failure early warning to be more accurate, the scheme can be adjusted to monitor the characteristic parameters extracted in the step S2 in real time, and the scheme is not limited to fixed nodes. According to the invention, intrinsic decoupling is realized, the measurement precision, the decoupling efficiency and the intelligent degree are greatly improved, the practicability is high, meanwhile, the self-diagnosis function is realized, and the reliability is ensured.

The application relates to the technical field of human-computer interaction, in particular to a pressure input key based on a microphone and a method, which comprises a microphone, a sound transmission hole, a pressure sensing structure and a processing unit; the microphone is integrated in the interior of an electronic device; the sound transmission hole is arranged on the shell of the electronic device and is in communication with the microphone to form an acoustic channel; the pressure sensing structure is a ring structure arranged around the sound transmission hole, and the pressure sensing structure is provided with at least one gap to form a neck part connecting the sound transmission hole and the atmosphere; the processing unit is integrated in the interior of the electronic device and is in communication connection with the microphone. Compared with the prior art, the application solves the problem that an additional pressure sensor / capacitance sensor needs to be added to measure the pressing level in the prior art. According to the scheme, a micro variable sound cavity capable of changing with the contact and pressing degree of a finger is constructed at the microphone, the correlation between the acoustic signal and the pressing form is established, and thus the pressing level can be calculated by monitoring the acoustic signal collected by the microphone.

The invention provides a mixed flow velocity and flow measuring device and method, and particularly relates to the technical field of measuring instruments, and the device comprises a gas mixing assembly, a flow field optimization assembly, a flow velocity sensing assembly and a signal processing assembly. The gas mixing assembly comprises a differential channel mixer and a mixing cavity, and gas premixing is achieved. The flow field optimization assembly comprises a plurality of air duct partition plates and straight pipe sections, and the mixed gas conveying pipeline is divided into a plurality of independent divided air ducts; the flow velocity sensing assembly comprises a rectification assembly and a pressure sensing assembly, the rectification assembly comprises a pore plate and / or a grid, and the pressure sensing assembly comprises a plurality of uniformly distributed pressure sensing elements; the signal processing assembly comprises a differential pressure sensing transmitter, a static pressure sensing transmitter, a temperature sensing transmitter, an atmospheric pressure sensing transmitter and a data processing module. The pressure sensing element detects differential pressure signals, the differential pressure sensing transmitter converts the signals, the data processing module calculates the average flow velocity and flow of the mixed gas based on the signals and measurement data, and the measurement precision and accuracy are improved.

The utility model discloses a flush valve which comprises a valve body and a pressure sensing assembly, a pressure sensing channel is arranged on one side of the valve body, the pressure sensing assembly comprises a piston rod and a force sensing assembly, the force sensing assembly comprises a force sensing element, the force sensing element is a strain gauge or a flexible pressure film, and the piston rod is arranged in the pressure sensing channel. Water pressure in the pressure sensing channel can push the piston rod to act on the force sensing assembly so as to trigger the force sensing element. Water enters the pressure sensing channel and pushes the piston rod, and the piston rod acts on the force sensing component, so that the force sensing component is strained to cause corresponding electric signal change, and the current water pressure is reflected. The measuring precision of the force-sensitive element is extremely high, and the fine change of the water pressure in the pipeline can be accurately controlled by measuring the water pressure change through the force-sensitive element, so that more accurate regulation and control are realized.

A wearable fluid delivery device (FDD) has a fluidic module and an electromechanical module. The fluidic module has a fluid path from a fluid reservoir to an outlet to a patient that is separate from the electromechanical module and its components that control the delivery of the fluid to the patient. A pump that can be disposed in the fluidic module, or in the electromechanical module and external to the fluid path. The FDD can have a releasably coupled first housing and second housing that enclose a respective one of the fluidic module and the electromechanical module. The first and second housings when connected have respective ones of aligned sensor opening and sensor access opening to create a sensor access area and permit a sensor to detect a pressure in the fluid path and thereby provide a pressure sensing system external to the fluid path.

The utility model provides an integrated pressure sensing chip and an integrated pressure sensor, and the integrated pressure sensing chip comprises a substrate which is provided with a first surface and a second surface which are opposite to each other, and the first surface is provided with a groove and a through hole which are adjacent to each other; the first covering layer and the second covering layer are arranged on the first surface, the first covering layer is arranged on the groove, and the second covering layer is arranged on the through hole; the first resistive layer is arranged in the first covering layer, and the second resistive layer is arranged in the second covering layer; the isolation layer and the compensation layer are sequentially stacked on the first covering layer and the second covering layer respectively; and the conductive connecting piece penetrates through the compensation layer and the isolation layer and is electrically led out of the first resistance layer and the second resistance layer respectively. The integration level and the application range of the integrated pressure sensor can be improved.

The embodiment of the invention discloses a bionic skin, which comprises a uniform humidity layer, a third detection layer and a heating layer which are stacked, the third detection layer is arranged between the uniform humidity layer and the heating layer, the third detection layer is used for detecting the surface pressure of the bionic skin, the uniform humidity layer is used for uniformizing the surface humidity of the bionic skin, and the heating layer is used for heating the heating layer. The heating layer is used for adjusting the actual temperature value of the surface of the bionic skin, and the heating layer can deform. Therefore, through cooperation of the third detection layer, the humidity equalizing layer and the heating layer, multiple functions of pressure sensing, humidity adjusting and temperature adjusting can be achieved, and therefore the complex and diversified functions of human skin can be simulated. Compared with a single simulation function, the bionic skin provided by the invention can realize simulation of multiple functions, so that the real state of the human skin after the wearable product is worn can be better simulated, the wearable product can be improved, and the use comfort of a user of the wearable product can be improved.

The invention relates to a pressure sensing inverse echo measurement LSTM short-time sea wave significant wave height prediction method, and belongs to the technical field of marine environment parameter inversion and marine dynamics observation. The method comprises the following steps: firstly, preprocessing multi-source observation data, and matching and integrating data from different sources; establishing a model, and improving the performance of the model by adjusting the structure and parameters of the model; and finally, evaluating the precision of the model, and verifying the precision and stability of the model in a complex environment. According to the method provided by the invention, a plurality of long and short-term memory network layers are combined with a plurality of full-connection layers to realize hierarchical fusion of time features, so that the prediction precision of the significant wave height of the short-term sea wave is improved, and important data support is provided for the directions of ocean dynamics, environmental evaluation and the like.

The invention belongs to the technical field of sewage treatment, and particularly relates to a water treatment sedimentation tank communication port self-adaptive flow adjusting device which comprises a tank body and a partition wall arranged in the tank body, and a communication hole is formed in the side wall of the partition wall. The valve body frame is fixedly arranged in the communicating hole, and a water body channel is formed in the valve body frame; and the flow adjusting mechanism is arranged in the water body channel, and the flow adjusting mechanism is used for changing the overflowing area of the water body channel. The water level difference of the two sides of the partition wall is sensed through the pressure sensing mechanism, the linkage transmission mechanism drives the flow adjusting mechanism to dynamically change the overflowing area of the water channel, self-adaptive flow adjustment is achieved, flow fluctuation can be coped, the water level can be balanced, and the sedimentation time and efficiency are guaranteed; meanwhile, the internal pressure sensing diaphragm and the filter screen are convenient to clean or replace, and the maintenance difficulty is reduced; in addition, the cost is low, the manual operation and maintenance burden is reduced, and the problem of high failure rate of an electric or pneumatic device is avoided.

The invention relates to the technical field of mining robot mechanical arms, in particular to a mining positive-pressure anti-explosion cooperative mechanical arm and a gas control system and method thereof. The mining positive-pressure anti-explosion cooperative mechanical arm gas control system comprises a gas source processing unit and a gas storage unit, gas is directly taken from a mine laneway environment through a gas pump, the concentration of methane in the gas is detected in real time through a methane gas sensor in a buffer cavity, and a circulating purification and waste discharge path is formed through an electromagnetic valve set; and it is ensured that only qualified gas is stored in the gas storage cavity. The whole machine adopts the vertical layout of the air cavity, the equipment cavity and the mechanical arm body, and the structure is compact; the control method comprises the steps of gas purification, purging, positive pressure maintaining and the like, and through multi-stage pressure sensing and closed-loop control, the stable positive pressure, 50 Pa higher than the ambient atmospheric pressure, in the equipment cavity is dynamically maintained. According to the invention, gas source self-supply in an underground explosive environment of a coal mine is realized, and the device has the advantages of high load self-weight ratio, small transformation degree and reliable operation.

The invention discloses a self-calibration flexible pressure sensing device, which comprises a first conductor and a second conductor which are in a strip-shaped, strip-shaped or linear structure and both have a piezoresistive effect. The isolating layer is arranged between the first conductor and the second conductor, and through holes or long grooves with continuous through holes are distributed in the surface of the isolating layer; and an encapsulation layer covering the first conductor and the second conductor. According to the embodiment of the invention, a dual-core layer piezoresistive structure and a through hole type isolation layer design are adopted, the dual-core layer design covers a range from small pressure to large pressure, the range limitation of a single material is broken through, and a dynamic self-calibration technology is combined, so that multi-parameter integrated detection of pressure magnitude, position and width is realized; the sensor array has the advantages of self-adaption to environment change, wide-range detection, multi-scene applicability and the like, the sensor for realizing the functions only needs four wires, complex wiring of the sensor array is avoided, miniaturization and flexibility are facilitated, a narrow strip-shaped flexible structure is adopted as a whole, and flexible arrangement of sensor tracks and garment integration are facilitated.

The invention discloses a terminal pressure feedback variable frequency pump set cooperative adjustment method. A terminal pressure sensing module, a central control module, a variable frequency driving module and a plurality of variable frequency pumps connected in parallel are included. The throttling loss of the valve is avoided through the precise feedback of the tail end pressure and the cooperative adjustment of the variable frequency pump set, so that the pump set always operates in a high-efficiency interval (the efficiency is improved to more than 85%), and the energy is saved by 30-50% compared with the traditional constant-speed pump system; and meanwhile, multi-pump cooperative adjustment avoids long-term operation of a single pump in a low-efficiency interval, and the energy utilization rate is further increased. And the tail end pressure stability is high, the tail end most unfavorable point pressure is monitored in real time, and the tail end pressure fluctuation range is controlled within + / -0.02 MPa in combination with quick response adjustment within 50 ms, so that the problem of insufficient or overpressure of a far-end user is effectively solved, and the user experience is improved.

The invention discloses an anti-clogging high-precision liquid flow sensor, and belongs to the technical field of liquid flow sensors, the anti-clogging high-precision liquid flow sensor comprises a shell, a linkage mechanism is arranged in the shell, the linkage mechanism comprises a fixing frame, a bearing, a rotating shaft, a turbine and a signal blade, one end of the rotating shaft is provided with a transmission mechanism, and the other end of the rotating shaft is provided with a transmission shaft; an electromagnet and a flushing mechanism are arranged at the bottom of the shell, the flushing mechanism comprises an electromagnetic valve and a flushing pipe, the flushing pipe is communicated with one end of the electromagnetic valve, the other end of the electromagnetic valve is communicated with a vertical pipe, and the top end of the vertical pipe is communicated with the shell. By introducing an intelligent blockage monitoring mechanism based on mechanical transmission and pressure sensing, the reliability and the pre-maintenance capability of the sensor are remarkably improved, and by integrating a set of on-line high-pressure flushing system triggered by a controller instruction, the self-cleaning function of the interior of a sensor flow channel is achieved; and the long-term cleanness and the measurement precision of the core measurement part are effectively guaranteed.

A system includes a processor circuit that receives intravascular imaging data from an intravascular imaging catheter, an x-ray image from an x-ray imaging device, and intravascular pressure data from an intravascular pressure-sensing guidewire. The processor circuit correlates the intravascular imaging data and the intravascular pressure data to locations along a body lumen shown in the x-ray image. The processor circuit generates a longitudinal view of the body lumen based on the intravascular imaging data and outputs a screen display including the longitudinal view of the body lumen with an overlaid graphical representation corresponding to the intravascular pressure measurements.

The invention relates to a sucking and swallowing cooperated breast feeding auxiliary device for a premature infant, and belongs to the technical field of medical instruments. The use method comprises the specific use steps that the premature infant is gently placed on the dynamic fitting body position supporting unit; the flexible pressure sensing unit immediately starts to work to monitor the body position change of the premature infant in real time; when the premature infant starts to suck, a nursing person puts a bionic sucking head of the sucking-swallowing linkage auxiliary unit into the mouth of the premature infant; when the sucking pressure is gradually increased, the valve starts to be linearly opened to discharge milk; when it is detected that the body position of the premature infant deviates towards the right side by 6 degrees, information is rapidly transmitted to the sucking-swallowing linkage auxiliary unit through wireless signals, and a flow adjusting valve is immediately triggered to reduce the milk yield by 30%; when the body position of the premature infant returns to normal, the flow adjusting valve restores to normal milk output; according to the sucking and swallowing cooperated breast feeding auxiliary device for the premature infant, the milk intake amount of the premature infant is increased, and the bucking phenomenon does not occur in the feeding process.

The invention provides a filling pipeline leakage monitoring and positioning method, device and equipment and a storage medium, and relates to the technical field of pipeline monitoring. The method comprises the following steps: acquiring time-varying data of pressure in a pipeline through a pressure sensing unit, and identifying leakage triggering characteristics; transmitting a pressure pulse wave at the starting end of the pipeline and receiving an echo signal, and calculating a pressure wave propagation speed under the current working condition according to the echo signal; and the arrival time of the pressure waves arriving at the sensors is extracted, and based on the pressure wave propagation speed and the pressure wave arrival time difference, leakage point coordinates are obtained through calculation. According to the method, the leakage characteristics are rapidly identified through real-time pressure collection, the real-time wave velocity under the current working condition is obtained through the active pulse echo technology, and the wave velocity calculation deviation caused by medium characteristic changes is effectively eliminated; and the actually measured wave velocity and the time difference of arrival are combined for calculation, so that error accumulation in long-distance transportation is overcome, and the precision and reliability of pipeline leakage positioning are remarkably improved.