|| List of recent Pressure Sensor-related patents
|Method and apparatus for characterizing interfacial tension between two immiscible or partially miscible fluids|
An apparatus (and method) for characterizing interfacial tension between a non-wetting phase fluid and a wetting phase fluid of a slug flow employs a capillary structure that is configured to contain a slug of the non-wetting phase fluid of the slug flow. The slug has a leading edge meniscus and a trailing edge meniscus, and the capillary structure has a venturi-like section.
|Fuel injection valve|
A fuel injection valve includes a cylinder internal pressure sensor disposed in the vicinity of a distal end thereof. The cylinder internal pressure sensor detects a cylinder internal pressure in a cylinder and outputs a first sensor signal ss1 responsive to the detected cylinder internal pressure.
|Semiconductor device and manufacturing method thereof|
An object of the present invention is to suppress an error in the value detected by a pressure sensor, which may be caused when environmental temperature varies. A semiconductor substrate has a first conductivity type.
|Blower filter device|
A blower filter device (50) for a respirator system (1) has a filter unit (31) receiving an air filter (30) and a blower unit (65) drawing in the filtered air and generating discharged air. The blower unit has a blower (53) and a driving motor (54).
|Controller for a common-rail injection system|
A controller for a common-rail injection system includes a plurality of fuel injectors, a common fuel supply line for the fuel injectors, a high-pressure pump for supplying the common fuel supply line with fuel, and a pressure sensor for determining the pressure in the common fuel supply line. A determination unit evaluates data of the pressure sensor and, from the pressure drop caused by an injection in the common fuel supply line, determines the fuel quantity actually injected during this injection or a value derived therefrom.
|Semiconductor pressure sensor, pressure sensor apparatus, electronic equipment, and method of manufacturing semiconductor pressure sensor|
A semiconductor pressure sensor (720) includes a thin film piezoelectric element (701) which applies strain to a portion of a semiconductor substrate that corresponds to a thin region (402). The thin film piezoelectric element (701) is formed at a distance away from diffusion resistors (406, 408, 410, and 412) functioning as strain gauges and is extended to the proximity of a bonding pad (716a) connected to an upper electrode layer of the thin film piezoelectric element and a bonding pad (716f) connected to a lower electrode thereof.
|Differential pressure sensor|
A differential pressure sensor includes a containment body defining a first and a second cavity separated by a separation wall; a piston housed slidably in the first cavity and comprising a magnet; a magnetic sensor housed in the second cavity near the separation wall for sensing the axial distance of the magnet from the separation wall; a positioning system housed in the second cavity and having one portion of a first axial end thereof which supports the magnetic sensor and is elastically yieldable in an axial direction and away from the separation wall, the positioning system being structured so that when it is moved towards the separation wall, the magnetic sensor contacts the latter before the positioning system reaches an axial stroke end, said stroke end being reached thanks to the above-mentioned elastic yielding.. .
|Mems pressure sensor, electronic device, altimeter, electronic apparatus, and moving object|
A mems pressure sensor includes a diaphragm portion that becomes displaced according to a pressure, and a resonator arranged on a main surface of the diaphragm portion. The resonator includes: a first fixed electrode provided on the main surface; and a drive electrode having a second fixed electrode provided on the main surface, a movable electrode spaced apart from the first fixed electrode, overlapping with the first fixed electrode, as viewed in a plan view seen from a normal direction to the main surface, and driven in a direction that intersects the main surface, and a supporting electrode supporting the movable electrode and connected to the second fixed electrode..
|Downhole quartz gauge with minimal electronics|
A system and method of monitoring a pressure, temperature, and/or vibration of a hostile environment without requiring the use of active electronics or an oscillator circuit in that environment. The system and method interrogate a resonant pressure sensor and a resonant or passive temperature sensor connected to a transmission line and located at least 100 feet (30.48 m) away from a network analyzer.
|Tire pressure sensor device|
A tire pressure sensor device includes a tire pressure sensor including a housing and a mounting block defining a through portion in a coupling means thereof, and an air valve including an extension rod having a rod body rotatably inserted through the through portion and a stop block located at one end of the rod body and rotatable with the rod body between a first angular position where the stop block is kept in accurate alignment with the through portion and axially movable with the rod body through the through portion for allowing separation between the tire pressure sensor and the air valve and a second angular position where the stop block is stopped at the coupling means of the mounting block in a staggered manner relative to the through portion to prohibit separation between the tire pressure sensor and the air valve.. .
|Cooling fan control device|
A cooling fan control unit, in response to an operation performed at the rotation direction selector switch to select a reverse rotation setting while the cooling fan is rotating forward, lowers a relief pressure setting at the variable relief valve to a predetermined lower limit value over a predetermined length of time, and once the discharge pressure at the hydraulic pump detected by the pressure sensor is lowered to a predetermined switch-over pressure, executes control so as to switch the direction of flow of pressure oil to the hydraulic motor to the reverse direction by switching the direction switching valve and raises the relief pressure setting at the variable relief valve to a reverse rotation pressure setting, at which the hydraulic motor rotates in the reverse direction, over a predetermined length of time.. .
|Push lock differential pressure sensor|
A diesel particulate filter is provided and may include a filter housing having an inlet and an outlet and a filter element disposed within the filter housing. A first metal conduit may be in fluid communication with an interior of the filter housing between the inlet and the filter element and a second metal conduit may be in fluid communication with the interior of the filter housing between the filter element and the outlet.
|Toothbrush and system with sensors and user identification|
A toothbrush provides a unique opportunity to integrate health monitoring sensors into an object widely used by the mass population daily. A toothbrush is provided with various health monitoring sensors including an orientation sensor, oximetry sensor, capacitive sensor, pressure sensor, and temperature sensor.
|Vehicle velocity visual alert system with discrete and unambiguous brake and "stopped" status features to reduce rear-end crashes|
The speed-orientation-for-safety lights system or (sos lights), designed to reduce rear-end motor vehicle crashes, is a velocity-contingent rear and interior colored-lights visual alert system which signals real-time information from a lead car to following drivers via a processor-memory-speedometer-brake configuration that shows a lead vehicle's: (1) actual and changing speeds; (2) degree of brake pressure when decelerating and (3) stationary status. The main alert device has a plurality of adjacent speed indicator lights with braking and stopped status elements.
|Nerve blocking indwelling catheter needle with resistance measurement device|
A nerve blocking indwelling catheter needle with a resistance measurement device comprises a needle core (6), a catheter (1), and a pressure detection device. The needle core (6) penetrates through the catheter (1), and a tail end of the catheter (1) is connected to a connection tube (19).
|Pressure plate device for orthotic selection|
A foot pressure measurement and foot length measurement device employs a plurality of pressure sensors and an optical foot length measurement system. The device also includes a computer that can perform an analysis of the foot pressure and length data to select an appropriate orthotic device.
|Organ perfusion systems|
An organ perfusion system comprises: a perfusion fluid circuit (16) arranged to circulate perfusion fluid through the organ; a surrogate organ (126) arranged to be connected into the circuit in place of the organ so that the circuit can circulate fluid through the surrogate organ; and organ sensing means arranged to distinguish between the presence of the organ in the circuit and the presence of the surrogate organ in the circuit. The sensing means may comprise one or more pressure sensors (136, 137, 138), or a flow meter (125).
|Multi-frequency tire pressure monitoring detector|
Methods, systems, and devices are provided for tire pressure detectors that may operate according to one of two or more selectable frequencies. Tire pressure detectors may include an rf section to modulate pressure information from a pressure sensor onto an output signal.
|Method and apparatus for the determination of an internal filtration during an extracorporeal blood treatment|
A method and apparatus for the treatment of blood are disclosed allowing for the determination of an internal convection in a blood purification device e.g. In the form of a dialyzer.
|Automated tire inflation apparatus|
An apparatus for inflating a tire including a base and a tire inflation line coupled with a pressure sensor. An air blast assembly includes a blast line fluidly coupled to a blast nozzle located on the base and configured to receive and direct pressurized gas from the blast line when the blast nozzle is in an air blast position relative to a tire and wheel assembly supported on the base.
|Pneumatischer antrieb und verfahren zur erfassung der leistung eines pneumatischen antriebs|
A pneumatic drive and a method for acquiring the power of a pneumatic drive are specified. A piston is movably disposed in a working space and coupled to a path transducer.
|Ultrasonic meter flow measurement monitoring system|
The present invention provides an automated meter station monitoring system for a fluid comprising a processor having algorithms for verifying performance of a fluid flow measurement system. A pressure sensor is operatively connected to the processor to measure the pressure of the fluid.
|Method for controlling water pump of vehicle and system thereof|
A method for controlling a water pump of a vehicle moving a coolant circulating through a cooling load generating heat and a radiator includes calculating a rotation speed command based on a control reference temperature of the coolant. A water pump suction pressure is set and compared with a preset control reference pressure to control the rotation speed command.
|Evaporative emission control system|
A combined system for detecting leaks in an evaporative emission control system and for inflating flat tires. The evaporative emission control system includes a vapor capture canister with a purge valve and a system pressure sensor, and the flat tire repair kit includes a reservoir containing tire inflation fluid, an attachment tube for attaching the reservoir to a tire, and a pump selectively connected to the evaporative emission control system and the reservoir.
|Multipurpose cerebrospinal fluid sensor assembly and method of operation of the same|
A cerebrospinal fluid (csf) monitoring device for the detection of obstructions in real time through the collection of pressure data from an on-board pressure sensor. This system is designed to integrate into medical devices equipped with a csf drainage system, such as implantable shunts.
|Pressure sensor for touch input devices|
A stylus and sensor capable of determining levels of pressure applied to a tip are disclosed. The stylus has a tip configured to interact with and receive a force from a touch surface.
|Well tool pressure testing|
A method of pressure testing a well tool can include applying positive or negative pressure to an internal chamber of the well tool, or determining a reference pressure, and monitoring the pressure in the internal chamber using a pressure sensor in the internal chamber. Another method can include applying pressure to an internal chamber of a well tool at a surface location, thereby creating a pressure differential in one direction across a seal, and installing the well tool in a well, thereby creating another pressure differential in a possibly opposite direction across the seal.
|Multi-phase metering of fluid flows|
A multi-phase flow meter includes a flow conduit leading from an inlet to an outlet and including a variable inlet restriction, a variable outlet restriction, a pressure sensor and a volumetric flow meter, located between the variable inlet restriction and the variable outlet restriction. The flow meter further includes a controller adapted to receive data from the pressure sensor and the volumetric flow meter, and to adjust the variable inlet restriction and the variable outlet restriction in accordance with at least one program.
|Retrievable pressure sensor|
The present invention relates to a retrievable pressure sensor for in situ measurement of pressure in a process fluid in a pipe/chamber. The pressure sensor comprising a pressure-transferring device and an outer sensor part having a pressure sensing element attached at a distance from the pipe/chamber where the pressure is to be measured.
|Sensor with isolated diaphragm|
A sensor assembly includes a first wafer having a cavity formed therein and a second wafer bonded relative to the first wafer to form a diaphragm over the cavity. A trench is formed in the second wafer in or around the diaphragm and the trench may be filled with an isolating material to help thermally and/or electrically isolate the diaphragm.
|Detecting blood path disruption in extracorpreal blood processing|
A device monitors a blood path from a blood vessel access of a human subject through an extracorporeal blood processing apparatus and back to the blood vessel access. A pumping device in the blood path is operable to pump blood through the blood path from the blood withdrawal device to the blood return device.
|Self-calibrating pressure sensor system with pressure sensor and reference sensor that share common sealed chamber|
A self-calibrating pressure sensor system may measure the pressure of a gas or liquid. The system may include a pressure sensor, a reference sensor, and a drift compensation system.
|Refrigeration cycle device|
A refrigeration cycle device circulates a refrigerant, which is a zeotropic refrigerant mixture. In a refrigeration cycle, a compressor, a condenser, an expansion valve, and an evaporator are connected by a refrigerant pipe.
|Locating system and locating method using pressure sensor|
A locating system includes a plurality of pressure sensors, a storage unit, and an analysis unit. The pressure sensors are located at different locations under a floor of a room to sense pressures.
|System for performing remote ischemic conditioning|
A system for performing remote ischemic conditioning includes an inflatable cuff configured to encircle a limb of a subject and a controller removably attached to the cuff. The controller includes a pump; a manifold in fluid communication with the pump; a connector in fluid communication with the manifold and in removable fluid communication with the inflatable cuff; a pressure sensor; and a control circuit configured to implement a remote ischemic conditioning treatment protocol..
|Pressure sensors for small-scale applications and related methods|
Certain pressure sensor devices are much smaller than prior art devices, yet are at least as sensitive as the prior art devices. A capacitive pressure sensor can include a flexible substrate that permits bending of a pressure sensing region without significantly affecting operation thereof.
|Peristaltic pump for pumping a liquid and method for operating a peristaltic pump|
A peristaltic pump (1) for pumping a liquid comprises a flexible tube (2) for guiding the liquid to be pumped, a compression means (5) being actuatable for compressing the flexible tube (2), an upstream valve means (3) arranged in an upstream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) upstream of the compression means (5), and a downstream valve means (4) arranged in a down-stream direction with respect to the compression means (5) and being actuatable to selectively open or close the flexible tube (2) downstream of the compression means (5). A drive shaft (6) is provided which is rotatable for periodically actuating the compression means (5), the upstream valve means (3) and the downstream valve means (4).
|Apparatus and method for reprocessing lumened instruments|
Apparatus and methods for processing an item, such as a lumened instrument, secured in a connectorless fashion in a push/pull reprocessor. The push/pull reprocessor includes a container having a first chamber and a second chamber and a pressure sensor in each chamber such that the method includes the step of generating a flow of a liquid, such as ozonated water, back-and-forth upon the item or additionally through a lumen in the case of a lumened instrument..
|Air-fuel ratio imbalance detection device for internal combustion engine|
A plurality of cylinders are provided. An in-cylinder pressure sensor is mounted on each of the plurality of cylinders.
|Systems and methods for resistive microcracked pressure sensor|
Embodiments of a resistive microcracked pressure sensor having a metal stack with a metallic conductor encapsulated within an elastomer substrate and related method of manufacture are disclosed. During manufacture, the metallic conductor forms a plurality of microcracks that increase the overall resistance of the metallic conductor.
|Water resistant aircraft pitot device|
A pitot tube system having a pitot tube containing a porous hydrophobic fabric that blocks water and contaminants from reaching a pressure sensor. The distance in the pitot tube between the fabric and a front orifice of the tube is less than 2.4 times the height of the orifice, and preferably less than or equal to 0.38 times the height.
|Polymer layer system pressure sensor device, and polymer layer system pressure sensor method|
A polymer layer system pressure sensor device includes a first polymer substrate having a first cavity and a first polymer membrane stretched over the first cavity. The first polymer membrane is configured to be deflected dependent on a pressure in the first cavity.
|Sensor control apparatus, sensor control system, and sensor control method|
A sensor control apparatus which receives from a gas sensor (10) a sensor output signal ip corresponding to the concentration of a specific gas component, and a pressure signal p output from a pressure sensor (20). The sensor control apparatus includes a computation section (38) which computes a specific component concentration which is corrected based on the pressure signal p so as to eliminate the influence of the pressure of the gas.
|In situ probe with improved diagnostics and compensation|
A process combustion transmitter is provided. The transmitter includes a process probe extendible into a flow of process combustion exhaust.
|Ventricular shunt system and method|
A ventricular shunt systems and methods of preventing hydrocephalus are described herein. In one aspect, the ventricular shunt system has at least one pressure sensor that is configured to be selectively electromagnetically coupled to an ex-vivo source of rf energy and is variable in response to the pressure in a patient's ventricle..
|Blood pressure monitoring method|
A device, system and method for monitoring blood pressure information of a user. A device is configured with at least one pressure sensor, a fastening element, and a processing component.
A device, system and method for monitoring blood pressure information of a user. A device is configured with first and second pressure sensors, a fastening element, and a processing component.
|Pressure regulating syringe and method therefor|
A pressure regulating syringe comprises a barrel assembly terminating with a tubular tip positionable in fluid communication with a fluid chamber, a plunger that is manually and axially displaceable within a barrel of the barrel assembly, a pressure sensor mounted onto the plunger adjacent to its distal end, for generating one or more electrical signals representative of a change in pressure within the fluid chamber, circuitry housed within the plunger for processing the generated signals, and a display mounted on the plunger for displaying an output indicative of the processed signals. The output is changeable upon axial displacement of the plunger when the tubular tip is positioned in fluid communication with the fluid chamber, which is for example a cuff surrounding a medical tube.
|Electronic control device|
An electronic control device has a resin case to which a circuit board having a terminal contact pad is fixed; a hydraulic unit having an electromagnetic solenoid which controls a hydraulic circuit and a pressure sensor which detects a pressure of the hydraulic circuit; a motor post having a current-carrying member which electrically connects a motor and the circuit board and extending from the resin case and inserted in the hydraulic unit; and a fixing member which is provided at the resin case and holds an outer periphery of the pressure sensor. Positioning between the pressure sensor and the terminal contact pad of the circuit board is made by the motor post inserted in the hydraulic unit and fixation of the pressure sensor by the fixing member..
|Formation testing in managed pressure drilling|
A method of testing an earth formation can include incrementally opening a choke while drilling into the formation is ceased, thereby reducing pressure in a wellbore, and detecting an influx into the wellbore due to the reducing pressure in the wellbore. Another method of testing an earth formation can include drilling into the formation, with an annulus between a drill string and a wellbore being pressure isolated from atmosphere, then incrementally opening a choke while drilling is ceased, thereby reducing pressure in the wellbore, detecting an influx into the wellbore due to the reducing pressure in the wellbore, and determining approximate formation pore pressure as pressure in the wellbore when the influx is detected.
|Fuel system with leakage detection means|
A method is provided for detecting a leakage in a fuel supply system of an internal combustion engine. The fuel supply system includes a fuel line system with fuel line sections and a pressure monitoring system with monitoring segments, a set of valves, and a pressure sensor.
|Control device for turbocharged diesel engine|
An object of the invention is to satisfy various constraints associated with supercharging pressure control even during transitional operation in a turbocharged diesel engine of which a supercharging pressure is actively controllable through operation of an actuator. The control device calculates a steady target value that is a target value of the supercharging pressure during steady operation on the basis of an engine rotation speed and a fuel injection amount, and operates the actuator through feedback control such that an actual supercharging pressure calculated from a signal of a supercharging pressure sensor is brought close to the steady target value.
|Power regeneration device for working machine and working machine|
In a lowering operation of a boom, the amount of operation of a control lever is detected by a pressure sensor and input to a controller. Based on the input operation amount, the controller obtains a target flow rate q0 of return oil discharged from a boom cylinder, calculates a deviation Δq between the target flow rate q0 and an actual flow rate q obtained from an actual rotation speed n of an electric motor acquired by a rotation speed sensor, calculates a signal sm for controlling the opening area of a proportional solenoid valve in a manner allowing hydraulic fluid to flow to a control valve in just as much as Δq, and controls an operation pilot pressure of the control valve supplied from a sub-pump in accordance with the signal sm so that the hydraulic fluid will flow to the control valve exactly in the amount of Δq..
|Apparatus and method for learning filling parameters for a clutch|
A method and a device for calibrating a wet clutch is provided. The clutch comprises a pump, a piston, a proportional valve, a controller, and a pressure sensor.
A fuel cell vehicle is provided that can perform communicative filling only in a case in which it is possible to perform communicative filling appropriately. The vehicle includes: a pressure sensor and temperature sensor; a communication system that transmits data signals generated based on the outputs of these sensors; a battery; a lidded box that protects a hydrogen feed port; a lid switch; and a communicative filling ecu that activates the communication system after the lid has been opened.
|Autonomous thermal event control and monitoring system for a network vault|
An autonomous thermal event control and monitoring system includes a processor component having an enclosure, a processor within the enclosure, a routine, a number of inputs from the processor, and a plurality of inputs to and a plurality of outputs from the processor for each of a plurality of feeders. The system also includes a human machine interface communicating with the processor.
|Systems and methods for damper performance diagnostics|
A computerized method for diagnosing a damper condition in a flow control unit includes providing a control signal to a damper. The control signal instructs the damper to move into a target position or to achieve a target flow rate through the flow control unit.
|System and method for verifying alignment of drug pump and fluid supply|
A patient care system is configured for infusing fluid to a patient. The system includes a plurality of fluid infusion pumps, each of which is connected to a respective fluid supply for pumping the contents of a fluid supply to a patient via fluid supply lines.
|Detection of infusion pump conditions|
An ambulatory infusion system and a method of operating including a disposable infusion cartridge having a collapsible reservoir and a substantially rigid shell disposed over the collapsible reservoir having an interior volume, a pump device, a pressure sensor in communication with the interior volume and a processor. The method includes actuating the pressure sensor to take pressure measurements at regular time intervals; periodically assessing a preselected number of the pressure measurements with statistical analysis to identify statistical measures associated with the pressure measurements; and using the statistical measures to assess the status of the flexible reservoir and the pump device..
|Air pump for use in intermittent pneumatic compression therapy having a digital display|
A digital display air pump includes a rectangular, box-shaped body having a standard ac power cord extending from it, two air supply output ports, and a control and information panel located on its front side with user-operated buttons, a digital display for showing air pressure and alarm codes, a variable air pressure set dial, and status lights. Within the hollow interior of the body is an air compressor, a dual-output electromechanical valve having to two air output tubes, an air pressure sensor, an ac power connection, an internal loudspeaker, and an electronic circuit board controlling the digital display air pump's function.
|Compact mini air pump for use in intermittent pneumatic compression therapy|
A compact mini air pump includes a rectangular, box-shaped body having a standard ac power cord extending from it, two air supply output ports, and a control and information panel with user-operated buttons and status lights located on its front side. Within the hollow interior of the body is an air compressor, a dual-output electromechanical valve having to two air output tubes, an air pressure sensor, a dc battery power supply, an ac power connection, and an electronic circuit board controlling the mini air pump's function.
|Portable micro air pump for use in intermittent pneumatic compression therapy|
A portable micro air pump includes a body, an air output port and a quick-disconnect air tube connector. The body is hand-sized, and has a user control and information panel with a power on/off button switch and a button switch for choosing which type of therapy garment is to be utilized, limb or foot.
|Wireless footswitch and functional electrical stimulation apparatus|
A shoe insole has a cavity configured to provide an internal pocket open to a face of said insole, conveniently the lower face, the cavity having a length greater than its width and being directed generally along the length of the insole. A segmented structure is slideably insertable into said cavity within it is removably retained, the segments being disposed along the cavity and housing a pressure sensor, sensor state monitoring circuits, a wireless transceiver and a battery, adjacent segments being electrically connected together and hinged together by pairs of laterally spaced connector bars each mechanically connected together by links configured to maintaining the spacing between segments while permitting flexion between adjacent segments under loads encountered during walking..
|Body-worn system for measuring continuous non-invasive blood pressure (cnibp)|
The present invention provides a technique for continuous measurement of blood pressure based on pulse transit time and which does not require any external calibration. This technique, referred to herein as the ‘composite method’, is carried out with a body-worn monitor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor.
|Intravascular pressure sensor calibration|
The invention is a method for calibrating an intravascular pressure sensor at the point of use. By using data from a secondary pressure measurement device, e.g., an automated aortic pressure monitor, the pressure sensor can be easily calibrated over a range of temperatures and pressures relevant to the patient.
|Pressure sensing guidewire|
Medical devices and methods for making and using medical devices are disclosed. An example medical device includes a pressure sensing guidewire.
|Patient interface system|
A patient interface system for scanning a volume of tissue protruding from a patient, the system comprising: a base including a planar portion configured to support the patient in a prone configuration, and a frustoconical portion extending from the planar portion and defining a base aperture configured to receive the volume of tissue; and a support assembly configured to couple to the base, including a frame and a membrane retained in tension within the frame at a peripheral portion of the membrane, wherein the membrane defines a membrane aperture configured to align with the base aperture, and wherein the membrane is configured to deflect into the frustoconical portion of the base in response to the patient's weight. The system can further include an electrical subsystem including a pressure sensor array configured to generate signals in response to a pressure distribution resulting from the patient's weight at the patient interface system..