969 results about "Pressure threshold" patented technology

A control system for use with an ultrasonic surgical instrument includes a generator supplying electrical energy to an ultrasonic surgical instrument, the electrical energy supplied by the generator being controlled such that power applied by the instrument is maintained constant once a predetermined pressure threshold is met. The control system operates by assigning a nominal power at which the ultrasonic instrument is to operate and adjusting the current and voltage applied to the ultrasonic surgical instrument so as to maintain the power applied by the ultrasonic surgical instrument at approximately the nominal power.

CPAP treatment apparatus is disclosed having a controllable flow generator (34, 38, 40) operable to produce breathable gas at a treatment pressure elevated above atmosphere to a patient by a delivery tube (32) coupled to a mask (30) having connection with a patient's airway. A sensor (44, 50, 56, 58) generates a signal representative of patient respiratory flow, that is provided to a controller (54, 62, 64). The controller (54, 62, 64) is operable to determine the occurrence of an apnea from a reduction in respiratory airflow below a threshold, and if an apnea has occurred, to determine the duration of the apnea and to cause the flow generator (34, 38) to increase the treatment pressure. In one preferred form the increase in pressure is zero if the treatment pressure before the apnea exceeds a pressure threshold. Below the pressure threshold the increase in pressure is an increasing function of the duration of the apnea multiplied by the difference between the pressure threshold and the current treatment pressure.

A method for the design and production of improved pressure reducing therapeutic shoe insoles for a person. The method includes the steps of measuring a three dimensional image of a foot and the distribution of plantar pressures applied by a person's foot being measured for a pressure reducing insole. Selecting a shoe insole outline or template which best fits or corresponds to the shape of a foot being measured. A foot display is generated which combines and aligns the three dimensional foot shape and the plantar pressure distribution. A three dimensional insole display is generated which combines and aligns the foot shape and plantar pressure distribution, and includes modifications based upon selected pressure contour lines identified within the foot display which are above predetermined pressure thresholds.

A control system for use with an ultrasonic surgical instrument includes a generator supplying electrical energy to an ultrasonic surgical instrument, the electrical energy supplied by the generator being controlled such that power applied by the instrument is maintained constant once a predetermined pressure threshold is met. The control system operates by assigning a nominal power at which the ultrasonic instrument is to operate and adjusting the current and voltage applied to the ultrasonic surgical instrument so as to maintain the power applied by the ultrasonic surgical instrument at approximately the nominal power.

A system and method for use in iontophoretic anesthesia of a tympanic membrane are disclosed. The system generally includes an earplug and an electrode device. The earplug includes at least one sealing member for sealing the earplug in an ear canal. The sealing member includes microholes which vent fluid above a certain pressure threshold. A headset may connect the earplug to a second earplug. The method involves using the system on a human or animal subject.

The presence or absence of a high pressure condition in an implantable blood pump is determined at least in part based on a comparison between a determined amount of differential pressure across the pump and a pressure threshold value. The amount of differential pressure parameter may be determined based at least in part on a parameter related to flow, such as a parameter related to thrust on the rotor of the pump. In response to determining the presence of a high pressure condition, an updated speed of rotation of the rotor that is less than the rotor's initial speed may be determined. The rotor's speed may be increased when the flow rate of blood is determined to be at least equal to a flow recovery threshold value.

A fluid compression system includes a plurality of compressors, each compressor having a local controller for controlling operation thereof and a sensor for sensing the pressure of compressed fluid discharged therefrom. A method for controlling operation of the fluid compression system includes establishing a set point pressure threshold for loading and unloading each compressor, and assigning a ranking to each compressor for identifying a highest ranked compressor and a lowest ranked compressor, whereby the highest ranked compressor for the compression system initiates all commands for controlling all of the lower ranked compressors in the compression system. The method also includes commencing a loading subroutine including loading the highest ranked unloaded compressor, setting a load delay timer, sensing the pressure of the compressed fluid discharged from the highest ranked compressor, comparing the sensed discharge pressure of the highest ranked compressor to the set point pressure threshold established for the highest ranked compressor, and transmitting a load command from the controller of the highest ranked compressor to the controller of the next highest ranked unloaded compressor if the sensed discharge pressure of the highest ranked compressor remains less than or equal to the set point pressure threshold established for the highest ranked compressor, and the load delay timer equals zero. The loading subroutine is repeated until the discharge pressure of the highest ranked compressor is greater than the set point pressure threshold established therefor.

A method for the design and production of improved pressure reducing therapeutic shoe insoles for a person. The method includes the steps of measuring a three dimensional image of a foot and the distribution of plantar pressures applied by a person's foot being measured for a pressure reducing insole. Selecting a shoe insole outline or template which best fits or corresponds to the shape of a foot being measured. A foot display is generated which combines and aligns the three dimensional foot shape and the plantar pressure distribution. A three dimensional insole display is generated which combines and aligns the foot shape and plantar pressure distribution, and includes modifications based upon selected pressure contour lines identified within the foot display which are above predetermined pressure thresholds.

A handpiece assembly is provided that is adapted for use with a medication infusion system that applies pressure to the handpiece assembly for delivering medication to a body. The handpiece assembly includes a cartridge holder that is configured for disposal of a medication cartridge. A tubing is provided having a first end, which is sealed with the cartridge holder such that the cartridge holder facilitates communication between the tubing and the medication cartridge. A handpiece is sealed with a needle and the second end of the tubing so that the tubing and the needle are in communication. One of the cartridge holder, the tubing, the needle or the handpiece is configured for a selective structural failure at a predetermined pressure threshold applied to the handpiece assembly from the medication infusion system. The cartridge holder may be designed to facilitate aspiration.

A method of triggering functions in a computer application comprises the steps of: providing a digitizer having a pointing device, wherein the digitizer and pointing device are operably associated with a computer having an operating system and an application; applying pressure to the digitizer with the pointing device; sensing the applied pressure; triggering in the application a first function if the sensed applied pressure exceeds a first pressure threshold; and triggering in the application a second function if the sensed applied pressure exceeds a second pressure threshold. The second pressure threshold is greater than the first pressure threshold.

For integrating multiple different touch based inputs, a method is disclosed that includes detecting a pressure at a screen pressure module, enabling a first touch module based on the pressure exceeding a pressure threshold value, and integrating input from a second touch module and the first touch module, the input from the first touch module and the second touch module being concurrently received.

A roll-over vent valve comprising a housing formed with a fluid inlet and a fluid outlet, a valve seating bounding an outlet aperture of the housing, a float member received within the housing and axially displaceable between a sealed position wherein a sealing member thereof sealingly bears against the valve seating of the outlet aperture to seal the fluid outlet, and an open position wherein the sealing member is disengaged from the valve seating whereby the fluid outlet is in flow communication with the fluid inlet. There is further provided a pressure-retention device extending intermediate the valve seating and the fluid outlet, to thereby shut fluid flow therebetween as long as pressure differential between the fluid inlet and the fluid outlet does not exceed a minimal pressure threshold. The valve further comprises a one-way fluid inlet valve being in flow communication with said fluid outlet to allow fluid flow towards said fluid inlet a substantially high flow rate at the event of under-pressure at the fluid inlet.

A protective helmet includes an outer shell. A bladder, coupled to the outer shell, provides shock absorption in at least one zone or protection. The bladder holds an absorption pack that contains a plurality of absorption particles and / or a fluid and has a relief valve for relieving pressure on the bladder when the pressure on the bladder is greater than a pressure threshold.

The embodiment of the invention discloses a control method and device. The control method can include the steps that in the process that the bottom of an inner container of a cooking device is heated,an inner-cavity pressure value of the inner container is detected; when the inner-cavity pressure value meets a preset pressure threshold value, the bottom of the inner container and an inner cavityof the inner container are simultaneously heated, and a temperature value of the bottom of the inner container and a temperature value of the inner cavity are detected respectively; according to the temperature value of the bottom of the inner container, the temperature value of the inner cavity and the preset control strategy, the bottom of the inner container and the inner cavity are controlledto be heated. Whole cooking food materials can be heated accordingly, the decocting, baking and roasting function of an electric pressure cooker for the cooking food materials is achieved, the taste of the cooking food materials can also be better than that of common cooking food materials, and the using efficiency and the cooking effect of the electric pressure cooker are improved.

The invention provides a terminal locking and unlocking method and a terminal locking and unlocking device. The method comprises the following steps of: receiving an input pressure value by using a terminal; comparing the input pressure value with a preset pressure threshold value, and when the input pressure value is more than or equal to the preset pressure threshold value, transmitting a triggering signal; and locking or unlocking the terminal according to the triggering signal. In the method, a user only holds the terminal with a palm and applies a certain holding pressure, the holding force of the user is compared with a preset holding pressure value, and the terminal is unlocked and continuously locked according to a comparison result, so the locking and unlocking of a terminal screen are realized. The method has the advantage of greatly improving the ease of use and usability of the terminal, and is extremely easy for weak users, such as the aged, the young and the like, to learn to achieve excellent user experiences.

The embodiment of the invention provides a response method of a touch screen and electronic equipment. The method is applied to the electronic equipment with a curved screen, and comprises the following steps: firstly, determining a first equipment state when the electronic equipment is held by a user at a first moment, and determining a touch parameter of a first side edge region of the curved screen of the electronic equipment as a first response threshold value according to the first equipment state, Wherein a pressure sensor is arranged in a first side edge area of a curved screen of the electronic equipment; Then receiving a first operation; When the first operation meets the first response threshold value, making a response to the first operation; Determining a second equipment statewhen the electronic equipment is held by the user at a second moment, adjusting the touch parameter from a first response threshold value to a second response threshold value according to the secondequipment state, and receiving a second operation of the user in the first side edge region of the curved screen; And when it is determined that the pressure threshold of the second operation meets the second response threshold, responding to the second operation.

A method and apparatus are provided for determining pressure within a tire mounted to a vehicle, wherein the tire is coupled to a tire pressure monitoring system including a sensor coupled to a transmitter, the sensor configured to sense tire pressure and the transmitter configured to transmit the sensed tire pressure to a receiver. First, a first tire pressure is sensed. Then, a calculation is made as to whether the sensed first tire pressure is greater than a predetermined pressure threshold, equal to the predetermined pressure threshold, or less than the predetermined pressure threshold. Next, an indication is provided external to the vehicle that the sensed first tire pressure is greater than a predetermined pressure range, within the predetermined pressure range, or less than the predetermined pressure range.

A pressure monitoring system (12) for a tire (14a) of an automotive vehicle includes a first pressure sensor (94) coupled to the wheel, a pressure transmitter (90) coupled to the pressure sensor (94) whereby the transmitter generates a pressure signal. A controller (22) is coupled to the pressure transmitter. The controller (22) receives the pressure signal and in a first stage, compares the pressure signal to a pressure threshold to obtain a sensor status. In a second stage, the controller (22) qualifies the sensor status signal by generating a warning status in response to the sensor status.

A pipeline (12) for the transportation of a process fluid comprises an autonomous shut-off valve system comprises a shut-off valve (1) including a fluid powered valve actuator (2) moveable between a closed and an open position by means of pressure generated by the process fluid, a pressure tapping (3) in the pipeline upstream of the shut-off valve, a fluid connection to the pressure tapping arranged to deliver process fluid to power opening of the said shut-off valve, at least one pressure sensor (16) arranged in a hydraulic line extending from the pressure tapping, at least one control valve (8A, 8B, 8C) operable to permit or prevent flow of pressurised fluid to the shut-off valve actuator; and a controller (15) arranged to open and close the control valve. The control valve is commanded to open and close when pressure thresholds are reached, the pressure thresholds being detected by the pressure sensor and the control valve being commanded to close by the controller.

A system includes a pressure sensor communicating directly, or indirectly, via a data processor, with a feedback device. The pressure sensor is located in an athletic surface, such as in footwear, sports boards, decks, or the like, to measure the pressure and / or force transmitted to a user's leg, ankle, knee, and so forth. The feedback device produces a signal, optionally an audible, visible, and / or tactile signal, to alert the user that the pressure or force has exceeded a pressure threshold.

A key actuating system (1) of a keyboard musical instrument is provided which helps quickly push the keys by reducing reaction force with respect to force of pushing the keys during manual operation, and which supports a person having less strength to play the keyboard musical instrument. The key actuating system for a keyboard musical instrument generates a sound when a key (3) is pushed including: a pressure detection sensor (11) detecting a pushing pressure on the key; a status detection sensor (13) detecting a movement status of the key: an actuator (15) actuating the key in a pushing direction of the key; and a control portion (19), when the pressure detection sensor detects the pushing pressure and the status detection sensor detects motion of the key, controls operations of the actuator in order to maintain the detected pressure by the pressure detection sensor at a pressure threshold which is in a range larger than 0 and smaller than a pushing pressure on the key which is necessary for making a sound.

The embodiment of the invention discloses a photographing implementing method. The method comprises the steps of acquiring pressure corresponding the pressing action produced by the user pressing a key on a rear plate of a terminal through the terminal; comparing the pressure with the first preset pressure threshold through the terminal; if the pressure is not less than the first preset pressure threshold, controlling a camera of the terminal to focus through the terminal; displaying a photographing functional interface through a display terminal of the terminal. With the adoption of the method, the camera can be controlled to focus according to the pressure produced by the user pressing the key on the rear plate of the terminal, and therefore, the photographing stability and accuracy of the terminal can be improved.

The present disclosure relates to a virtual keyboard based content input method and apparatus, and a touch device, and belongs to the technical field of terminal input. The method comprises: detecting a touch operation corresponding to a virtual keyboard; according to a touch position of the touch operation and a relative position between keys of the virtual keyboard, controlling a touch feedback module group to send key position feedback information; and when the touch operation conforms to a triggering condition of target keys and touch pressure of the touch operation is greater than a pressure threshold, inputting content corresponding to the target keys, and controlling the touch feedback module group to send key travel feedback information. According to the method disclosed by the present invention, the problem of misoperation easily caused by using the virtual keyboard to carrying out an input operation in associated technologies is solved; and perception to the key position and the key travel by a user can be realized, the content corresponding to the target keys can be triggered to input only in the conditions of accurately touching the target keys and applying certain pressure, and misoperation caused by using the virtual keyboard to carry out the input operation is effectively reduced.

Pneumatic nailer comprisinga working piston which is connected to a driving plunger for driving in a fastening means and which is subjected to compressed air when a driving-in process is triggered, anda triggering device which has a manually actuatable trigger and a contact feeler, wherein actuating the trigger and the contact feeler together activates a first control valve and can trigger a driving-in process, characterized bya second control valve which is activated when actuating the trigger independently of an actuation of the contact feeler,a chamber which is either aerated or deaerated via a throttle when the second control valve is activated, anda locking piston which is displaced from a resting position into a locked position when the pressure in the chamber passes a predetermined pressure threshold and which in the locked position prevents a driving-in process from being triggered.

A pressure relief valve system for use in a downhole operation may include a pressure relief valve configured to relieve pressure from high pressure tubing extending between a pump and a wellhead, and may include a sensor operably disposed to detect pressure in the high pressure tubing. The pressure relief valve system also may include a controller having a pressure threshold stored therein. The controller may be configured to receive data from the sensor and compare the detected pressure to the stored pressure threshold. A valve actuation system may be in communication with the pressure relief valve and in communication with the controller. The valve actuation system may be configured to change the state of the pressure relief valve from a closed state to an open state in response to a command signal from the controller.

Described herein is a compartment pressure monitoring device that enables the continuous monitoring of pressure in a physiological compartment, such as those found in the hand, forearm, upper arm, abdomen, pericardium, thigh and leg. In various embodiments, the device includes a tube connected at a first end to a balloon, and at a second end to a pressure gauge. A trocar sleeve may also be connected to the tube at or near its first end, such that a compatible trocar may be used to facilitate the insertion and positioning of the device within the compartment. The pressure gauge includes an alarm device configured to sound or display an alarm when a predetermined pressure threshold on the balloon has been met or exceeded. Also described is a method of continuously monitoring compartment pressure, using the compartment pressure monitoring device of the invention.

The invention discloses a handheld device control method. The control method includes the steps: controlling a pressure detection unit to detect the pressure value of a display screen and acquiring the pressure value; judging whether the pressure value meets a first preset condition or not to obtain a first judgment result; controlling a handheld device to output a preset prompt when the first judgment result indicates that the pressure value meets the first preset condition; judging whether a preset operation of a user is received or not to obtain a second judgment result; controlling the display screen to display an operation interface and unlocking the handheld device when the second judgment result indicates that the preset operation of the user is received. The first preset condition includes that the pressure value is larger than a first pressure threshold. In the whole unlocking process, the user can conveniently unlock the handheld device without an unlocking function key of the handheld device when operating the handheld device with a single hand, difficulty in unlocking the handheld device by an illegal user is increased, and safety of the handheld device is correspondingly improved. The invention further discloses the handheld device and a control device thereof.