290 results about "Pressure sensitivity" patented technology

Certain embodiments of the present invention provide methods and systems for clinical workflow using gesture recognition. Certain embodiments provide a method for gesture-based interaction in a clinical environment. The method includes detecting a gesture made on a sensor surface. The method also includes determining a pressure applied to make the gesture. The method further includes mapping the gesture and the pressure to a healthcare application function. The pressure modifies the healthcare application function corresponding to the gesture. Certain embodiments provide a gesture detection system including a sensor surface configured to detect a gesture made. The system further includes a pressure sensor configured to detect a pressure applied when making the gesture on the sensor surface. The system also includes a processor configured to identify the gesture and translate the gesture to a healthcare application function. The pressure modifies the healthcare application function corresponding to the gesture.

Disclosed herein is a secondary battery having a mechanical connection sensor, as a safety device, fixed to the outer surface of a prismatic or pouch-shaped battery cell while the mechanical connection sensor is set to OFF. The mechanical connection sensor is connected in series with a resistor having a predetermined resistance value and with a cathode and an anode of the battery cell. When the battery cell swells to a critical value or more due to the abnormal operation of the battery cell, the mechanical connection sensor is turned ON, and therefore, the mechanical connection sensor conducts with the result that the electrical energy of the battery cell is consumed at the resistor. In the secondary battery having the safety device according to the present invention, when the battery swells due to the abnormal response of the battery, energy accumulated in the battery is forcibly consumed, unlike a conventional battery that merely intercepts the current. As a result, the continuous occurrence of the abnormal response is fundamentally prevented, and therefore, more rapid process is possible with excellent pressure sensitivity. Consequently, the safety of the battery is improved.

The invention provides a pressure sensitivity adjustment method of a touch screen. The steps of the method includes that S11, when a user is detected to execute a touching operation on the touch screen, a touch screen module is switched on; S12, touch data are timely acquired, and the touch data comprise a touch pressure and touch coordinates; S13, an arithmetic mean value of the recent N times of touch pressures is calculated, the value is compared with a preset pressure value of the touch screen module, and the preset pressure sensitivity of the touch screen is enabled to be improved or lessened by at least one level if the absolute value of the difference of the arithmetic mean value of the touch pressure and the preset pressure value is larger than or equal to a preset threshold value. The invention further provides a pressure sensitivity adjustment system of the touch screen. According to the adjustment method and the system, working parameters of the pressure sensitivity of the touch screen can be adjusted according to the touch habit of the user, and therefore the pressure tactility of the touch screen is enabled to reach the best effect, the adjustable effect of the pressure tactility of the touch screen is achieved, and the user experience is improved.

The invention discloses a formation fracture space reconstruction method based on rock core measure. The formation fracture space reconstruction method based on the rock core measure comprises the following steps: step 1 of selecting fracture rock core, step 2 of scanning and processing a fracture rock sample through non-contact type measure system and obtaining a surface chart, step 3 of acquiring form data through a three-dimensional point cloud data reverse engineering software, step 4 of exporting the form data, generating a point cloud file, step 5 of generating the point cloud file to a fracture space grid chart by using a matrix laboratory ( MATLAB), step 6 of drawing contour lines, step 7 of processing and generating a space height map, and step 8 of conducting necessary rotation and move to the space height map, and obtaining a reconstruction fracture space model. The formation fracture space reconstruction method based on the rock core measure has the advantages that the height of the reconstruction fracture space model acquired through reconstruction is the same as an actual fracture form, precision is improved significantly, feasibility and practicability are achieved, digital simulation research of mesomechanics can be well satisfied, and necessary reference for further research of reservoir network fracture plane, output volume prediction and pressure sensitivity test is served.

An entirely surface micromachined free hanging strain-gauge pressure sensor is disclosed. The sensing element consists of a 80 μm long H-shaped double ended supported force transducing beam (16). The beam is located beneath and at one end attached to a square polysilicon diaphragm (14) and at the other end to the cavity edge. The sensor according to the invention enables a combination of high pressure sensitivity and miniature chip size as well as good environmental isolation. The pressure sensitivity for the sensor with a H-shaped force transducing beam, 0.4 μm thick was found to be 5 μV/V/mmHg.

The invention discloses a reversible temperature-sensitive cigarette packing paper preparation method comprising the steps that: (1) a temperature-sensitive color-change core material is prepared by using a color-change pigment with a reversible temperature-sensitive material; (2) the temperature-sensitive color-change core material is subjected to emulsification dispersion in a W/O dispersion emulsion; (2) the emulsified temperature-sensitive color-change core material is mixed with a high-molecular prepolymer shell material, and a microencapsulation reaction is carried out, such that temperature-sensitive color-change microcapsules are prepared; and (4) the obtained temperature-sensitive color-change microcapsules are diluted and are blended into printing ink; printing is carried out upon cigarette packaging paper, and the packaging paper is air-dried. According to the invention, with a high-molecular coating technology, the color-change core material is separated from the outside through the high-molecular shell material, such that paint color, shape, weight, volume, solubility, reactivity, durability, pressure-sensitivity, heat-sensitivity, photosensitivity, and the like can be freely adjusted, and dye safety is greatly enhanced.

An ergonomic, portable, electronic, string-like instrument that utilizes a string-like interface. The string-like interface is tactile for sightless playability and capable of advanced input such as force and pressure sensitivity. The string-like interface functions to select a note, trigger a selected note, select and play a note on the instrument or an external peripheral. The instrument is played using the techniques of multiple stringed instruments and the ergonomics allow the user to hold and handle the device consistent with playing techniques familiar to musicians of multiple instruments. It is internally or externally powered and connects directly to industry-standard musical hardware such as MIDI devices, amplifiers and multi-track recorders.

A conduit (106), with geometry designed to enhance pressure sensitivity, is vibrated at resonance in two modes along different cross-sectional axes (a, b). Measuring the change in the frequency ratio squared of the modes yields a substantially linear relationship to pressure that is substantially immune to other material properties and other environmental factors. Moments of inertia in different cross-sectional axes are related to pressure as a result of the elliptical or oral cross section of the conduit (106).

The invention provides a resonant type pressure sensor. The sensor comprises a sensor body, a pressure-sensitive film is formed at the bottom of the sensor body, a first resonator and a second resonator are formed on the pressure-sensitive film, the two resonators have the same intrinsic frequency, sensitivities, to the pressure P acting on the pressure-sensitive film, of the two resonators are equal, the first resonator is located in the center of the pressure-sensitive film, and the second resonator is located on the edge of the pressure-sensitive film. According to the resonant type pressure sensor, the two resonators are adopted, pressure characteristics of the sensor are represented by means of differential frequency output, influences of temperature factors are reduced, and pressure sensitivity and linearity of the sensor are improved. Temperature characteristics of the sensor are represented by means of sum frequency output for sensor temperature compensation, and the use temperature range of the sensor is widened.

The invention relates to smart concrete, in particular to carbon fiber graphite smart concrete formed by adding CCCW concrete mixture and carbon-fiber-graphite mixing electric conduction phase into base materials comprising silicate cement and sand, wherein the mass ratio of cement to sand is 1 to 1; and the percentage of other components corresponding to the total mass of the cement and the sand: 1 to 2 percent of CCCW concrete mixture, 0.3 to 0.5 percent of carbon fiber, 5 to 25 percent of graphite, 0.1 to 0.2 percent of dispersing agent and 0.01 to 0.015 percent of antifoaming agent. By utilizing the tunneling conducting effect between the contact electric conduction of chopped carbon fiber and graphite and the electric conduction phase, the invention forms the electrically conductive concrete with smart property, and has the advantages of favorable electric conduction, high mechanical property, stable electrical conductivity and pressure-sensitivity, simple preparation, lower price, and the like; and the material can be utilized for manufacturing a concrete structure sensor element, can be used for the effective execution of the health supervision of the concrete structure and can be used for weighing cars, etc.

The invention discloses a bidirectional self-adaptive damping valve which comprises a valve body, a valve core, a first valve base and a second valve base, wherein the valve core comprises a connecting body, a first valve core and a second valve core; the first valve core comprises a first half valve core, a first sliding piston and a first sensitive spring; the right end of the first half valve core is fixedly connected with the connecting body; the first half valve core is internally provided with a cavity; the left end of the first half valve core is axially provided with a first shaft hole; the first sliding piston is arranged in the cavity, one end of the first sliding piston passes through the first shaft hole at the left end of the first half valve core, and the other end of the first sliding piston is provided with a shaft shoulder for axially positioning; the first sensitive spring is arranged in the cavity, and is positioned between the first sliding piston and the connecting body. According to the invention, through the matched use of the valve core and the spring, the throttling and damping degree of the damping valve changes along with the pressure change at any end of the valve body, and the valve core is at the dynamic balanced state constantly; and through the setting of pre-compression amount of the spring, the pressure sensitivity of the damping valve within different ranges is realized, and the damping valve can adapt to the load pressure changes of all working conditions.

The invention discloses a device for testing high hydrostatic pressure and acoustic pressure sensitivity of a hydrophone, comprising a vibration exciter, liquid column cylinder, a sheet, a sealing cover, a base, a standard hydrophone, a pressure gauge, a high-pressure valve and at least one hole. The vibration exciter is used for generating vibration signals; the liquid column cylinder is used as a container for testing; the sheet is arranged at the bottom of the liquid column cylinder and used for converting the vibration signals into acoustic pressure signals in liquid; the sealing cover is arranged at the top of the liquid column cylinder and used for forming a sealed container together with the liquid column cylinder and the sheet; the base is arranged below the liquid column cylinder and used for restricting the vibration direction of the vibration exciter and supporting the sheet to prevent the sheet from deforming greatly under the high hydrostatic pressure; the standard hydrophone is used for measuring the acoustic pressure; the pressure gauge is arranged on the liquid column cylinder and used for measuring the hydrostatic pressure; the high-pressure valve is arranged on the liquid column cylinder, and liquid can be injected into the liquid column cylinder through the high-pressure valve; the at least one hole is arranged on the sealing cover and used for leading out the connection line of the hydrophone and a hydrophone to be tested. The invention solves the problem that the traditional method can not be used to test the high hydrostatic pressure sensitivity.

The invention relates to a radical animation Chinese character handwriting instructional system, which comprises a handwriting pen, an electromagnetic pressure sensitivity plate and a computer system; the computer comprises a radical recognition device, a speech recognition device and a writing document device. The system inputs Chinese characters through the electromagnetic pressure sensitivity plate, proceeds with strokes, and takes radicals as an outline, so as to ensure that a user can easily learn the Chinese characters which seem to be difficult through introducing the logical relation and the combined structure type of a Chinese character component. Through Flash animation demonstration, real pronounce, Mi character grid calligraphy, Chinese character tracing, coincident contrast, left and right contrast, calligraphy animation contrast, and calligraphy grade, etc.,the system enables the user to easily find out the self-problem. The real-time writing on the Chinese character writing Flash animation is the characteristic of the system. The system has the advantages of simplicity, integrality, interest and practicability.

The invention discloses a beam- film integrated arrangement resonance beam pressure transducer chip and manufacturing method thereof, characterized by that, a resonant beam is made on the face side of a single silicon chip, and a pressure responsive film is made on the opposite side, wherein the resonant beam is supported by two peninsula type arrangements and accomplished by porous silicon sacrificing layer process, and low stress thick silicon nitride is selected as the making material. The invention not only simplifies the making process of the micro resonant type pressure transducer, but also increases the pressure sensitivity.

The invention provides a productivity calculation method with the tight gas reservoir percolation mechanism taken into consideration. The method comprises the steps of 1, establishing a gas percolation motion equation with the starting pressure gradient taken into consideration; 2, establishing a gas percolation motion equation with the pressure-sensitivity effect taken into consideration; 3, establishing a percolation with the pressure-sensitivity effect and the starting pressure gradient taken into consideration; 4, describing percolation, in a gas reservoir, of fluid through the percolation equation established in step 3, and establishing a vertical shaft steady state productivity equation; and 5, describing percolation, in a stratum, of gas through the percolation equation established in step 1 according to formed infinite flow-guiding vertical cracks, and establishing a fracturing vertical shaft steady state productivity equation. By means of the productivity calculation method with the tight gas reservoir percolation mechanism taken into consideration, theoretical productivity of a gas well can be determined in the tight gas reservoir development process; production allocation of the gas well can be instructed; influence of the starting pressure gradient and the pressure-sensitivity effect on productivity can be determined quantitatively; and a great significance is achieved for studying the tight low-percolation gas reservoir.

The invention discloses a preparation method of a combined phosphorus type flame-retardant acrylic ester pressure-sensitive adhesive. The preparation method comprises the following steps of: polymerizing phosphorus-containing acrylic ester with fire resistance and a general acrylic ester monomer by a radical solution polymerization process under the conditions of normal temperature of 70 to 85 DEG C, nitrogen atmosphere as protective gas, peroxide as an initiator and a mixed solvent as a solvent; preparing a solution type adhesive material of an acrylic ester copolymer with intrinsic fire resistance by a multi-step polymerization process; and blending the solution type adhesive material and lipophilic ammonium polyphosphate slurry to obtain the flame-retardant pressure-sensitive adhesive with excellent pressure sensitivity and fire resistance. The preparation method is environment-friendly, non-toxic and simple in process. By the method, the intrinsic fire resistance is improved; influence on the pressure sensitivity of the pressure-sensitive adhesive caused by postaddition of the flame retardant is reduced; technical bottleneck of balance between the fire resistance and the pressure sensitivity is broken through; and functions of the pressure-sensitive adhesive and adhesive tape products in various fields are widened.

An improved sensor apparatus for developing a signal related to an inductive sensor in a resonant circuit are disclosed. This improvement is realized by adding a known capacitance to the resonant circuit and comparing the resulting natural resonance frequency to the frequency without the known capacitance. In this way a measure of the resonant capacitance is developed to correct the sensor signal for the effect of any changes in that capacitance. One disclosed embodiment adds an electronically variable capacitance which is adjusted to yield a constant capacitance that produces a sensor signal insensitive to variations in the resonant circuit capacitance. The resonant capacitance measurement may also provide an indication of another sensor state, such as temperature or pressure, which may be used to further correct for temperature or pressure sensitivities in the sensor signal. The invention is extended by juxtaposing the inductance for capacitance in the sensor resonant circuit.

The invention discloses a hot-melt pressure-sensitive adhesive for PVC electrical adhesive tape and a preparation method.The hot-melt pressure-sensitive adhesive for the PVC electrical adhesive tape is prepared from, by weight, 10-100 parts of thermoplastic elastomers, 15-100 parts of tackifying agent, 5-50 parts of softener and 0.4-1.5 parts of antioxidant.According to the prepared hot-melt pressure-sensitive adhesive for the PVC electrical adhesive tape, the product is solid, the polarity of the adhesive is appropriate, migration of a plasticizer can be effectively resisted, the hot-melt pressure-sensitive adhesive is prevented from moving to the back of a membrane, and environment friendliness is good.Moreover, due to the fact that the prepared hot-melt pressure-sensitive adhesive is 100% solid without a solvent, cost is low, and after repeated tests in a laboratory and long-time storage on the PVC membrane, the hot-melt pressure-sensitive adhesive still has good pressure sensitivity.Besides, the preparation method of the hot-melt pressure-sensitive adhesive is simple, energy consumption is low, and work efficiency is high.

The invention relates to a centralized key management system based on pressure-sensitivity fingerprint identification and a use method, which have the functions of identifying the authenticity of a key and ensuring that each returned key is put back to an original place. The centralized key management system based on the pressure-sensitivity fingerprint identification comprises a cabinet body, a fingerprint entrance guard lock, a key insertion plate, a main control system and a network examination and approval system, wherein the fingerprint entrance guard lock is arranged on a door of the cabinet body; the key insertion plate is installed in the cabinet body and comprises a lock core; a trigger switch is arranged behind the lock core; the key is in one-to-one correspondence to the lock core; and the main control system is electrically connected with the key insertion plate and the fingerprint entrance guard lock. The state of each key can be automatically identified; the authenticity of each key also can be automatically identified; the examination and the approval of the using right of each key can be performed in real time by the network in different places.

The invention discloses watering apparatus applied to various water droppers and drop irrigation tubes. The aim of the invention is achieved by the use of shell, runner set in the shell, and entrance and exit communicating with two ports of the runner. It is characterized in that the borderline or centre line of the runner is a separate-shape curve or a curve with separate shape. Compared with a routing labyrinth runner, the invention's has more strong energy-reducing effect, the fluid-state index small, and has the ability to reduce pressure sensitivity of the water dropper, and is wider than the routing labyrinth runner, sand-carrying ability strong and has very strong anti-jamming ability.

The invention discloses a device for testing acoustic pressure sensitivity of a hydrophone, which comprises a base (10), a vibration table (20), a liquid column cylinder (30), a hydrophone clamp (40), a standard hydrophone (61), and a spring (50), wherein the vibration table (20) is arranged on the base (10) and is used for generating vibration signals; the liquid column cylinder (30) is arranged above the vibration table (20) and is used as a testing container; the hydrophone clamp (40) is arranged on the base (10) and is used for clamping a hydrophone to be tested; the standard hydrophone (61) is arranged on the hydrophone clamp and is used for measuring the acoustic pressure; and the spring (50) is used for connecting the liquid column cylinder (30) and the base (10), adjusting the working state of the liquid column cylinder and preventing the liquid column cylinder from being turned over sideways. The device solves the problems of high power, large volume and high cost of the vibration table in the hydrophone.