517 results about "Pressure level" patented technology

An air mattress adjustment method includes adjusting the air mattress to a received user pressure setting, learning a level of pressure in the air mattress at a first plurality of times with respect to the user pressure setting, monitoring the level of pressure in the air mattress at a second plurality of times, determining that the pressure of the air mattress at one of the second plurality of times is out of range, and based on the determining, adjusting the pressure of the air mattress.Application. docx

An aspiration thrombectomy system for use with a vacuum source and an aspiration catheter includes an aspiration catheter, connection tubing configured to act as a common conduit for fluid communication between the aspiration catheter and a vacuum source, controllable valves operable to selectively open and close to control fluid flow, pressure sensors associated with the aspiration catheter or the connection tubing, and an automatic controller configured to operate the valves in a first operational state to generate fluid pressure changes, detect pressure levels in the system, wherein changes in the detected pressure levels are correlated with the generated fluid pressure changes, determine system states based on system state scores determined based on the detected pressure levels, the system state scores indicating a measure of occlusion in the aspiration catheter or the connection tubing, and operate the valves in a second operational state based on the determined system states.

A pressure-actuated switch having a pressure port, a diaphragm, a range spring, an actuator plate, a differential plate, and an electrical switch. A certain pressure level moves the diaphragm against the range spring at the pressure port and thus deflects the actuator plate. The actuator plate is coupled to the electrical switch via a snap spring, wherein the electrical switch can be switched on or off via the deflection of the actuator plate and the snap spring. The differential plate controlled by a differential spring is connected to the actuator plate and supports the actuator plate in a first portion of movement, wherein the differential plate is decoupled from the actuator plate in a second portion of movement of the actuator plate.

The invention discloses an auxiliary braking device for a vertical lifting type gate, and belongs to the technical field of vertical lifting type gates. The vertical lifting type gate is arranged in the gate groove in a lifting mode, and the auxiliary braking device comprises a hydraulic separating type crane, a hydraulic separating type crane and a hydraulic separating type crane, and the hydraulic separating type crane is configured to be capable of applying transverse pressure to the vertical lifting type gate so that the vertical lifting type gate can abut against and be fixed to the gate groove; the electric pump is connected to the liquid inlet of the hydraulic separation type crane and is configured to supply hydraulic fluid to the liquid inlet of the hydraulic separation type crane by hydraulic pressure; the regulating valve is arranged on a pipeline for connecting a liquid inlet of the hydraulic separating crane and an outlet of the electric pump; the auxiliary braking device is configured to adjust the pressure level of hydraulic fluid in the hydraulic separating type crane by adjusting the opening degree of the adjusting valve so as to adjust the transverse pressure.

The invention relates to an apparatus (100) for providing process air at at least two different pressure levels for an injection molding machine having an injection molding tool (10). The device (100) has two valves (Ia, IIa; ib, IIb), the first valve (Ia; ib) is connected, on the one hand, to a first pressure source (pI) at a first pressure level and, on the other hand, to an air duct (11a; 11b), which extends into the injection mould (10), and the second valve (IIa; iIb) is connected to a second pressure source (pII) at a second pressure level and to an exhaust line (12), wherein the first valve (Ia; ib) and a second valve (IIa; iIb) is designed and can be actuated in such a way that the air duct (11a; 11b) can withstand a first pressure or a second pressure. The invention further relates to an injection molding machine having such a device (100), to a method for demolding molded parts using such a device (100), and to the use of such a device (100).

The invention discloses a sailor workload adaptive prediction method based on multi-source heterogeneous data fusion. The method comprises the following steps: acquiring physiological feature data of sailors to obtain the current physiological load of an individual; obtaining an individual physiological load prediction value in the next time period based on the current physiological load of the individual and the physiological load parameters at the historical moment; acquiring the navigation environment data of the ship where the crew is located in the next time period, and obtaining the comprehensive pressure level of the navigation environment where the crew is located in the next time period; and inputting a causal reasoning graph model based on the comprehensive pressure level of the sailing environment in which the sailors are located in the next time period and the individual physiological load prediction value in the next time period, and predicting the workload level of the sailors. According to the method, the physiological feature data, the historical physiological load parameters and the navigation environment data of the sailors are collected and fused, the working states of the sailors are comprehensively reflected in multiple dimensions, and the information amount and the comprehensive analysis capacity of the prediction model are improved.

The present invention relates to a pressure storage device (10) for storing a medium (M) under pressure, comprising: at least a first pressure vessel (B1) having a first valve device (V1), and a second pressure vessel (B2) having a second valve device (V2); at least one feed line (Z) and / or one discharge line (A), which is connected to the first valve device (V1) and to the second valve device (V2); a control device (SE), which is connected to the first valve device (V1) and to the second valve device (V2) to open and / or close same and is configured to control filling and / or emptying of the first pressure vessel (B1) and of the second pressure vessel (B2) with and / or of the medium such that the pressure in the first pressure vessel (B1) and in the second pressure vessel (B2) is at or below a predefined pressure level.

Systems and methods of in situ pressure control at an anatomical environment during a procedure are disclosed. An exemplary irrigation and suction system comprises a user input configured to receive from a user a desired pressure to be applied to the anatomical environment, or a desired flow condition corresponding to the desired pressure. The system comprises a pressure sensor to sense a pressure at or near the anatomical environment, and a control module to adjust one or more of an irrigation flow rate or a suction flow rate of at least one working channel of a medical device to maintain the pressure of the anatomical environment at substantially a level of the desired pressure, or to maintain the desired flow condition in the working channel during the procedure.

This application provides a constant pressure water supply control method, system, and medium for a standardized secondary water supply pump station. The method includes: acquiring and processing multiple historical water supply data points within a preset time period, including water supply time data, corresponding pump water supply pressure data, and user node water supply pressure data, to obtain the water supply pressure level and corresponding water supply pressure and time; processing this data in conjunction with the user node water supply pressure to obtain the pipeline pressure loss value corresponding to the water supply pressure level; acquiring and processing real-time water supply time point data to obtain the water supply pressure level, corresponding water supply pressure, and pipeline pressure loss value, to obtain the real-time demand water supply pressure of the pump; then implementing water supply and acquiring and processing real-time water supply pressure data from user nodes to obtain a real-time water supply evaluation index; finally, performing threshold comparison and adjusting the water supply mode based on the comparison results; thereby achieving constant pressure water supply and precise control of the secondary water supply while reducing energy consumption.

The invention discloses a reinforcement learning reward function construction method and system based on multi-modal physiological signals. The method belongs to the technical field of automatic driving, artificial intelligence and man-machine interaction. The basic defect that balance cannot be obtained between a task target and the physiological comfort of a driver and passengers exists in the design of an existing reward function is overcome. The core technical idea is a two-stage decoupling architecture, wherein the first stage is an offline training stage, and the purpose of the first stage is to train a'physiological reward agent model '; and a second stage (reward generation and deployment stage): in this stage, the real-time dependence on all multi-modal physiological signals and acquisition equipment thereof is completely abandoned. The physiological reward agent model trained in the first stage is only used for conducting batch processing on any data set only containing vehicle state data and driving behavior data, the physiological pressure level is deduced, and a physiological reward is calculated according to the physiological pressure level.

The invention discloses a pressurizing oxygen cabin pressure control method which comprises the following control steps: after an oxygen cabin door is completely closed, a compressor in a pressure control system is started along with linkage control to implement a pressurizing mode in an oxygen cabin body; in the process of pressurizing the inside of the oxygen cabin, three paths of electric ball valves in the air circulation system are started according to three pressure gears set and monitored by an oxygen cabin pressure control system to open the corresponding electric ball valves to release pressure; and when the pressure in the oxygen cabin exceeds the pressure gear in the set three-gear pressure, the corresponding gear electric ball valve is automatically started and opened to execute the pressure relief task, so that the oxygen cabin pressure in the oxygen cabin is kept in a safe and effective pressure level interval, the pressure control in the oxygen cabin is simple, convenient and effective, and the pressure control cost is low.

The present disclosure relates to a method for operating a hydraulic system (10) of a power-split transmission (106) of a working machine (100) with a switching device (14) for switching between different driving ranges. The hydraulic system (10) has a first pump device (20) for supplying a hydraulic fluid at a first lower pressure level in a first pressure section (32) for lubricating the power-split transmission (106). Additionally, the hydraulic system (10) has a second pump device (22) for supplying the hydraulic fluid at a second higher pressure level in a second pressure section (34) for actuating the switching device (14). The hydraulic system (10) further has a cooling device (30, 48) for cooling the hydraulic fluid. The method includes sensing (1) the temperature of the hydraulic fluid.The method further includes controlling (IV) the cooling device (30, 48) to cool the hydraulic fluid of the hydraulic system (10) based on the detected temperature.

The present invention relates to a tactile sensor apparatus including a tactile sensor using an air pressure detecting method through an air chamber, a processor that detects a pressure level based on a degree of deformation of a membrane according to an internal pressure change of the air chamber of the tactile sensor, and a communication module that transmits the pressure level to a central processing device of a robot.

A device for controlling a fluid mass flow for a device for compressing a gaseous fluid from a low to a high pressure level. The device has a housing with fluid connections at different pressure levels, and a closure element arranged to move in a translatory manner within the housing along a longitudinal axis, with effective surfaces assigned to the fluid connections. The closure element regulates a flow cross-section of a flow path extending between a first and a second fluid connection. The device has a receiving element for receiving the closure element. A primary segment is arranged to be completely surrounded by the receiving element as a first section of the closure element and a secondary segment is arranged to be completely surrounded by the housing as a second section of the closure element and the receiving element is arranged to be completely surrounded by the housing.

The invention provides a dangerous waste landfill leakage emergency shield blocking and co-processing method and system, and relates to the technical field of underground pollution prevention and control and environment emergency treatment. On-site monitoring data are collected under the unified space-time reference, a pollution feather envelope line and shield curtain geometry are determined based on rapid inversion, a shield tunneling machine is driven to form a waterproof curtain, functional pipe pieces are arranged, an inward flow field is established in the curtain, and the water level difference and the negative pressure level are controlled in real time. The control terminal calculates a risk evaluation and dosage flow velocity instruction set according to the monitoring data and the extraction parameter set, and issues the risk evaluation and dosage flow velocity instruction set to the grouting, extraction and agent injection system to realize synchronous operation of curtain reinforcement and in-situ chemical repair; when the risk and repair indexes reach the standard, load reduction and plugging are carried out, and long-term monitoring is carried out. According to the method, rapid sealing control, dynamic repairing and intelligent decision making of the hazardous waste leakage area are achieved, and the accuracy of emergency disposal is improved.

Device for generating energy from compressed air, comprising an air turbine (16) which is designed to expand gaseous air from a first pressure level to a second pressure level and in the process to obtain first energy, comprising a combustion chamber (17) which is designed to receive the air expanded in the air turbine and to burn fuel therein, and comprising an exhaust gas turbine (18) which is designed to expand exhaust gas produced during the combustion of the fuel in the combustion chamber (17) and in the process to obtain second energy, wherein at least the air turbine and the exhaust gas turbine have a common housing.

A compliance restoration implant device includes a first compliant fluid container, a second compliant fluid container, and a conduit structure. The first compliant fluid container includes a first lumen that widens in response to fluid leaving the first compliant fluid container and narrows in response to the fluid entering the first compliant fluid container. The second compliant fluid container includes a second lumen that widens in response to the fluid leaving the second compliant fluid container and narrows in response to the fluid entering the second compliant fluid container. The conduit structure is coupled to the first compliant fluid container and the second compliant fluid container and is configured to pass fluid between the first compliant fluid container and the second compliant fluid container in response to changing pressure levels outside one of the fluid containers.

A fastener driving apparatus including an air compressor configured to generate pressurized air at a first pressure level, a drop down air regulator configured to reduce the pressurized air from being at the first pressure level to being at a reduced second pressure level, and a pneumatically powered fastener driving tool configured to receive the pressurized air at the desired reduced pressure level to enable the pneumatically powered fastener driving tool to drive one or more fasteners (such as one or more nails) into an object and a substrate at the desired positions in that object and substrate.

The utility model discloses an air pressure liquid level meter, a liquid storage device and plant protection equipment. The first waterproof pipe is communicated with the air pressure sensor; the inner pipe diameter of the air guide pipe is larger than that of the first waterproof pipe, one end of the air guide pipe is communicated with the air pressure sensor through the first waterproof pipe, and the other end of the air guide pipe is used for extending into liquid to sense water pressure. Under the normal condition, the air guide pipe and the air pressure sensor can be communicated through the first waterproof pipe, so that the air pressure sensor can normally sense the air pressure of the air guide pipe, and the liquid level detection function is achieved; in addition, the air pressure sensor can be waterproof through the first waterproof pipe.

A system to produce a mixture of fluids includes a pressure source, a pressure regulator, at least a first container containing a first fluid and a second container containing a second fluid, and a microfluidic mixer. A control unit is configured to control the pressure level of the first fluid and the pressure level of the second fluid. The control unit is also configured to control an opening and closing of the first valve and of the second valve to inject the first fluid and second fluid successively into the microfluidic mixer, thereby generating a profile of fringes of the first fluid and of the second fluid within the common outlet channel.

An arrangement for the needs-based control of the flow temperatures of cooling / lubricating oil flows in an electric traction drive having an electrically controllable motor-pump unit and a hydraulic unit, wherein the motor-pump unit can be controlled in two directions of rotation, namely in a first direction of rotation and in a second direction of rotation which is opposite to the first direction of rotation, and wherein a first pressure level and a second pressure level, which is higher than the first pressure level, can be set at the motor-pump unit by way of the closed-loop control of the rotational speed in the first direction of rotation or the second direction of rotation. The motor-pump unit is connected by way of the hydraulic unit to multiple fluid outlets for a first, a second and a third partial volume flow which are connected for cooling and / or heating and / or lubrication at least to the stator of an electric drive unit, and / or the rotor of the electric drive unit and / or a gearbox, wherein the arrangement comprises a heat exchanger, and the first partial volume flow is not connected to the heat exchanger, and wherein the direction of rotation and the pressure level of the motor-pump unit can be adjusted by way of an electric control unit and three different operating modes can be set depending on the direction of rotation and the pressure level.

The invention relates to the technical field of external thoracic drainage, and particularly discloses a drainage device for thoracic surgery nursing, which comprises a bottle body and a collecting cavity, the collecting cavity is arranged on the bottle body, the bottle body is provided with a water seal cavity and a pressure regulating cavity, the collecting cavity is used for collecting hydrops and gas discharged from the thoracic cavity of a patient, and the water seal cavity discharges the gas in the body of the patient in the form of bubbles. The pressure adjusting cavity is used for adjusting and maintaining the negative pressure level of the drainage device, the collecting cavity is connected with a drainage tube, and the monitoring assembly is arranged in the collecting cavity, corresponds to the drainage tube and is used for monitoring the flow of accumulated liquid in the drainage tube and the negative pressure in the collecting cavity and judging whether the drainage tube is blocked or damaged or not. By monitoring the hydrops flow in the drainage tube and the negative pressure state in the collection cavity, whether the drainage tube is blocked or damaged or not is judged according to the hydrops flow and the negative pressure state, and when facing abnormal drainage, medical staff can give an alarm in time to inform the medical staff to quickly judge whether the drainage tube is blocked or is physically damaged.

The invention provides a man-machine interaction tactile pressure evaluation method and system, computing equipment and a medium. The method comprises the following steps: acquiring a product virtual model under a digital twin environment pre-established for a real product; the method comprises the following steps: collecting real-time pose information of a real product, and tested hand motion data, man-machine interaction contact point information and pressure data of a contact point in a man-machine interaction process of a tested hand and the real product; mapping and presenting the spatial position of the tested hand in a digital twin system based on the hand motion data; calculating and generating a hand pressure distribution thermodynamic diagram based on the man-machine interaction contact point information and the pressure data of the contact points, and mapping and presenting the hand pressure distribution thermodynamic diagram to the product virtual model; and evaluating the man-machine interaction pressure level of a real product based on the spatial position of the tested hand and the hand pressure distribution thermodynamic diagram which are mapped and presented in the digital twin system.

Examples refer to powder feeding systems including a powder feeder connectable to a laser metal deposition equipment, the powder feeder having a feeding hopper to store powder, a first powder outlet through which powder is feed to the laser metal deposition equipment and a first powder inlet, a refilling hopper to store additional powder that includes a second powder outlet connected to the first powder inlet through which the additional powder is provided to the feeding hopper and a pressure generation component to generate an operating pressure level inside the feeding hopper. The system also includes a controller that, during normal operation of the powder feeder and upon reception of a refilling signal, causes the generation of a pressure level inside the refilling hopper substantially equal to the operating pressure level and causes the passage of additional powder from the refilling hopper to the feeding hopper.

The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.

A pillow includes a first pillow cushion consisting essentially of a gelatinous elastomer that is sized and configured to support a head and neck of a person using the pillow cushion and a second pillow cushion coupled thereto. The pillow cushion has deformable wall members located and configured to define voids therebetween such that the deformable wall members may be displaced into adjacent voids upon deformation of the deformable wall members. The deformable wall members are configured to buckle when a pressure applied to a cushioning surface of the first pillow cushion, in a direction perpendicular to a first major surface, exceeds a threshold pressure level. A pillow cover covers the first pillow cushion and the second pillow cushion. A method of fabricating a pillow includes enclosing such first and second pillow cushions in a pillow cover.

A high-lift forklift, and a hydraulic control system and method based on single-pump oil supply. The system comprises a load-sensitive pump (1), a hydraulic oil tank, a priority valve (3), an LS-type liquid filling valve (12), a steering gear (2), a brake valve (5), a brake accumulator (6), a first shuttle valve (13), and a second shuttle valve (11), wherein an oil outlet of the load-sensitive pump (1) is connected to each of a P port of the priority valve (3) and a P port of the LS-type liquid filling valve (12), a CF port of the priority valve (3) is connected to a P port of the steering gear (2), an EF port of the priority valve (3) is connected to a multy valve, and a port A of the LS type liquid filling valve (12) is connected to both the brake valve (5) and the brake accumulator (6); and an LS port of the LS-type liquid filling valve (12) is connected to a first shuttle valve (13), the first shuttle valve (13) is connected to each of an LS port of the priority valve (3), an LS port of the steering gear (2) and the second shuttle valve (11), and the second shuttle valve (11) is connected to an LS port of the load-sensitive pump (1). The problem of engine shutdown or failure when creating a pressure level required for normal operations caused by rapid pressure increments when oil liquid that is fed back by a steering system continuously drains at a medium position in a standby state is avoided.

The invention discloses an air pressure control system and a test system thereof.The air pressure control system is composed of an air control stop valve, a pressurization module, a low-pressure test module and at least one high-pressure test module and comprises a nitrogen inlet, the nitrogen inlet is communicated with a low-pressure test port through a first pipeline, and the first pipeline is communicated with the low-pressure test port in the direction from the nitrogen inlet to the low-pressure test port; the first pipeline is sequentially provided with a pneumatic control stop valve and a low-pressure test module; a first inlet of the pressurization module is connected with a compressed air inlet, a first branch pipeline is arranged between the pneumatic control stop valve and the low-pressure test module and connected with a second inlet of the pressurization module, and an outlet of the pressurization module is connected with the high-pressure test port through at least one second pipeline. And each second pipeline corresponds to one high-pressure test port and is provided with a high-pressure test module. The air pressure control system provided by the invention can measure a plurality of pressure grades, is high in test efficiency, and has the advantages of reliable function and long service life.

A road surface detection system, in one example the system includes a hydraulic unit of an anti-lock braking system, the hydraulic unit including a preload adjuster, and a plurality of pressure sensors configured to generate pressure sensor data. The system also includes a controller configured to receive the pressure sensor data from the plurality of pressure sensors, determine a target preload pressure level, compare the pressure sensor data with the target preload pressure level to calculate a pressure differential between the pressure sensor data and the target preload pressure level, determine a road surface based upon the calculated pressure differential, and regulate the preload adjuster to change the pressure within the hydraulic unit based upon the road surface.

A system for evacuating and sealing containers filled with product, for example, food product, includes an enclosed, sealed housing wherein the pressure level and the atmospheric content can be controlled. A vacuum shroud is positioned in registry with a container entrance opening in the housing, the shroud connectible to a vacuum source and to a source of replaceable gas to replace the ambient air to be removed from the container. The shroud is advanceable to seal the container entrance opening and is retractable from the container entrance opening. A container transport system inserts the container through the housing entrance opening and into the shroud. Thereupon, a sealing system seals the housing from the ambient after the container has been inserted into the shroud. After the air in the container has been replaced with an inert gas and then the shroud retracted, a closure subsystem applies a cover to the evacuated container. Thereafter, an out feed subsystem removes the closed container from the housing while maintaining the atmospheric content and pressure level within the housing.