133results about How to "The data is accurate and reliable" patented technology

Embodiments of the invention generally provide an input device that includes a plurality of sensing elements that are interconnected in desired way to acquire positional information of an input object, so that the acquired positional information can be used by other system components to control a display or other useful system components. One or more of the embodiments described herein, utilizes one or more of the techniques and sensor electrode array configuration disclosed herein to reduce or minimize the number of traces and / or electrodes required to sense the position of an input object within a sensing region of the input device.

Embodiments of the invention generally provide an input device that includes a plurality of sensing elements that are interconnected in desired way to acquire positional information of an input object, so that the acquired positional information can be used by other system components to control a display or other useful system components. One or more of the embodiments described herein, utilizes one or more of the techniques and sensor electrode array configuration disclosed herein to reduce or minimize the number of traces and / or electrodes required to sense the position of an input object within a sensing region of the input device.

A device and corresponding method for enabling a user to accurately control, monitor, and evaluate performance of a vehicle. A portable programmable computer device that a user can readily plug into a diagnostic connector port of the vehicle for providing the controlling, monitoring, and evaluating functions. Accurate detection of the start time of first movement of the vehicle is made based on data from an accelerometer, independent of the onboard diagnostic system and its diagnostics port. A clock is started for measuring time such that the precise time taken to reach the time-stamped first velocity value from the engine computer via the diagnostic port is determined. Data from the accelerometer and diagnostic port is analyzed and selectively used for accurately and reliably correcting for errors in velocity data from the onboard diagnostic system including latency error and errors due to the vehicle exhibiting wheel spin.

A device and corresponding method for enabling a user to accurately control, monitor, and evaluate performance of a vehicle. A portable programmable computer device that a user can readily plug into a diagnostic connector port of the vehicle for providing the controlling, monitoring, and evaluating functions. Accurate detection of the start time of first movement of the vehicle is made based on data from an accelerometer, independent of the onboard diagnostic system and its diagnostics port. A clock is started for measuring time such that the precise time taken to reach the time-stamped first velocity value from the engine computer via the diagnostic port is determined. Data from the accelerometer and diagnostic port is analyzed and selectively used for accurately and reliably correcting for errors in velocity data from the onboard diagnostic system including latency error and errors due to the vehicle exhibiting wheel spin.

The invention discloses a water gauge marking method and a water level detection method. The water gauge marking method comprises the following steps of: marking two E shapes on height area opposite angles of each digit unit in the longitudinal direction of a water gauge, marking two 'lattice' shapes with equal four small areas at opposite angle positions vertically crossed with the diagonal of every two E shapes, and filling the four small areas of the 'field' apes according to 16 different black-white orders to obtain graphs representing digits 0 to 15 respectively. The water level detection method comprises the following steps of: transmitting 'field'-shaped images marked on the water gauge and shot by a CCD camera to a computer through an image acquisition module, and converting the different filling graphs through the computer to obtain 0 to 15 decimal digits so as to determine the current water level. The marking water gauge enlarges the range of water level measurement, improves the measurement precision and is suitable for the water level measurement with irregular fall and large range; and the water level is detected no matter at night or daytime, the identification process is simple, and the methods provide reliable and precise data for a remote water control system and save a large amount of time.

The invention discloses an experimental method for measuring unconventional tight gas reservoir spontaneous infiltration absorption relative permeability. The method comprises the following steps of (1) washing and drying a core taken from a tight gas reservoir, and then measuring a diameter D, a length L, and an original porosity phi0; (2) obtaining absolute permeability K0 of the core and an effective pore volume VP; (3) putting the core after saturated formation water into a core holder, adding confining pressure, and raising a temperature to a formation temperature; (4) injecting a nitrogen gas into the core, carrying out replacement and stopping when a water amount of a water metering pipe at a core outlet end is no longer increased; and (5) under a water flooding pressure differencedeltaP, slowly injecting the water into the core holder, carrying out a spontaneous infiltration absorption water gas displacement experiment, calculating water phase relative permeability Krw, gas phase relative permeability Krg and water saturation Sw of the core, and acquiring a gas-water two-phase relative permeability curve of a tight gas reservoir core spontaneous infiltration absorption water gas displacement process. In the invention, a theoretical basis is provided for determination of residual gas saturation of the tight gas reservoir and calculation of reserves.

A CT-scanner having a gantry comprising a stator and a rotor, wherein an X-ray source and array of X-ray detectors are mounted to the rotor for determining absorption of X-rays along paths through the body of a patient imaged by the CT-scanner, the CT imager comprising: a processor that processes data comprised in signals generated by the X-ray detectors responsive to intensity of X-rays from the X-ray source incident on the detectors to generate an image of the patient; at least one spread spectrum transmitter that receives data comprised in the signals generated by the X-ray detectors and transmits signals encoded with the data in accordance with a spread spectrum coding; and at least one spread spectrum receiver that receives the encoded signals transmitted by the at least one spread spectrum transmitter and forwards the encoded data to the processor.

A method of cycle sampling for detecting electric energy quality includes using a fixed sampling frequency for sampling and using waveform fitting technique to restore it to be waveform, finding out zero ¿C crossover point of the waveform with least square method to obtain a complete cycle, carrying out secondary sampling on fitted waveform and analyzing electric energy quality index in system according to these points.

The invention discloses a nuclear power station containment vessel leakage rate monitoring method, which comprises the following steps that: S1. temperature, humidity and air pressure inside a containment vessel are regularly measured and are transmitted to a central controller; S2. air injection volume is regularly measured and is transmitted to the central controller, and the standard volume variation value of the wet air is calculated by the central controller; a wet air standard volume variation curve is drawn by the central controller according to the wet air standard volume variation value at different moments, and a slope Qld is calculated; and S3. air pressure difference inside and outside the containment vessel is calculated and displayed by the central controller, and a leakage rate curve is drawn by utilizing a plurality of Qld and delta P corresponding to the Qld. The invention also discloses a nuclear power station containment vessel leakage rate monitoring system for implementing the method. Due to the adoption of the system and the method, the leakage rate inside the containment vessel is calculated according to a principle of gas mass conservation, and the data is precise and reliable.

The present invention discloses the methods and apparatus to acquire, record, and analyze data to determine the draft of a water-borne vessel and / or the amount of cargo that has been loaded in a water-borne vessel. The apparatus includes a portable, handheld housing containing means for use in positioning the housing in a predetermined location and spatial orientation. Such means can include one or more narrow beam emitting devices, such as lasers or other similar devices, or a camera or other image processing level sensors. The housing also containing an ultrasonic transducer and receiver, or alternatively, a laser emitter and receiver, that directs sound pulses or light, respectively, toward the surface of the water body in which the vessel is placed. Within the housing is electrical circuitry to receive either the sound or light beam signals, and from these signals produce a signal representative of the time of travel of the sound pulse or light. This signal will be transmitted wirelessly to a PDA or similar device that utilizes an arraying analytical technique on the received signals to determine the distance of the vessel above the waterline. The data representing the distance of the vessel above the waterline will then be either further processed by the PDA, or transmitted wirelessly to a central computer, for use in conjunction with displacement characteristics and cargo unit weight to determine the amount of cargo that has been loaded in the vessel. A collapsible or telescopic handle or other similar device may be attached to the housing to both facilitate carrying the apparatus to the field site, as well as to facilitate the positioning of the housing at the desired draft line while permitting the marine surveyor to stand on the vessel deck. For ease of use controls for operating the apparatus are preferably attachable to the handle.

A testing method for one-time measurement of the tensile modulus and the compression modulus of rock comprises steps as follows: a horizontal strain gauge and a vertical strain gauge are pasted at centers of front and back sides of a disk sample respectively; the disk sample is placed on a press for a Brazilian disk test, the load force P is monitored by a pressure sensor, and the horizontal strain gauge and the vertical strain gauge monitor transverse strain epsilon x and vertical strain epsilon y of the centers of the disk sample respectively; the tensile modulus and the compression modulus of the rock are calculated as per the following formulas shown in the specification, wherein Ex and Ey represent the tensile modulus and the compression modulus of the rock respectively, P is the external load, D is the disk diameter, L is the disk thickness, vyx represents the x-direction transverse deformation coefficient caused by y-direction stress, and epsilon x and epsilon y represent the transverse strain and the vertical strain of the disk centers respectively. The tensile modulus and the compression modulus of the rock can be measured on the same rock sample through one test, the test method is simple and easy to implement, data are accurate and reliable, and results are more scientific.

The invention discloses a method for measuring pressure in a rotating state. The method comprises: installing a demarcating device on a test piece to form a pressure-tight demarcating chamber, feeding gas into the demarcating chamber, measuring voltage signal values of a sensor and gas pressure values of the corresponding chamber, fitting a curve to obtain a pressure calibration curve in a stationary state; feeding gases with different pressures in the demarcating chamber and rotating the test piece at different rotating speed, measuring the voltage signal values of the sensor corresponding the gas pressure in the present demarcating chamber under each rotating speed, fitting a curve to obtain a pressure calibration curve in the rotating state; obtaining an actual pressure value of the demarcating chamber through temperature of the demarcating chamber under each rotating speed, and modifying the pressure calibration curve in the rotating state; and combining the modified calibration curve and the signal values under each rotating speed measured by the pressure sensor in a test condition to obtain an actual pressure value of the pressure sensor. The method for measuring pressure in the rotating state makes test results capable of being reference, and ensures measuring precision of the test at the same time.

The invention provides a stirring tube driving speed reducer static test device. The stirring tube driving speed reducer static test device according to the invention comprises a support part, a test part, a plurality of force exertion elements and a control part, wherein the support part fixes and supports a speed reducer (20) to be tested, the test part comprises a carrying tube (22) and is connected with an output shaft of the speed reducer (20) to be tested, the force exertion elements comprise a torque loading device, a radial load loading device and an axial load loading device, and thecontrol part is connected to each force exertion element and controls each force exertion element for exerting preset load on the speed reducer (20) to be tested. The stirring tube driving speed reducer static test device according to the invention can comprehensively and precisely simulate various actual limit work conditions of the test speed reducer, the static intensity of each tested part inthe test speed reducer can be tested to find out weak links, and the reference basis is provided for the design.

The present invention provides a fire hydrant water pressure remote monitoring system based on a low-power internet of things. The system comprises a wireless water pressure monitoring node, a wireless internet-of-things base station, a cloud server, a fire hydrant information platform and a polling terminal. The wireless water pressure monitoring node is installed on a fire hydrant valve to perform low-power collection of fire hydrant water pressure data in a wide range and transmit data to the wireless internet-of-things base station in a wireless mode. The wireless internet-of-things base station receives water pressure data sent by the wireless water pressure monitoring node and transmits the data to the cloud server through the Internet. The fire hydrant information platform can receives alarm prompt of abnormal fire hydrant water pressure point position of the fire hydrant and distributes maintenance tasks to polling personnel, and the polling personnel receives tasks through the polling terminal and reports a maintenance feedback list to the fire hydrant information platform. The present invention provides a fire hydrant water pressure monitoring system with wide monitoring range, low power, convenient networking and efficient polling.

The invention discloses a method for continuously detecting physical parameters of compact rocks. The method includes the steps: selecting a rock sample, drying the rock sample, measuring the size andweight of the rock sample, taking formation water, soaking a fiber with a gap, repeatedly rolling a rock core on the fiber, uniformly soaking the outer surface of the rock core except for two end surfaces, placing the rock sample into an adjusted nuclear magnetic resonance spectrometer to obtain a T2 spectral curve of the sample, taking out the rock sample to dry the rock sample, performing saturation treatment on the rock core by the formation water, and testing a T2 spectral curve by the nuclear magnetic resonance spectrometer; taking out the rock sample, placing the taken rock sample intoa rock core clamping device, applying displacement pressure until the displacement pressure reach a suitable displacement pressure difference value, accurately recording needed parameters after a system is stabilized, continuing to measure the rock sample by a soap film flow meter, measuring a T2 spectral curve of the rock sample again, and analyzing and calculating acquired data to obtain variousof needed parameters. The method has the advantages that data are accurate and reliable, time is saved, and the method is convenient and rapid.

Embodiments of the present invention provide an apparatus and method controlling the flow of aspiration fluid in an aspiration chamber of a surgical cassette. One embodiment of the present invention provides an aspiration chamber having an aspiration port positioned at or close to the bottom of the chamber. When the aspiration fluid enters the aspiration chamber from below the fluid surface (e.g., from a port located at the bottom or on a sidewall close to the bottom), it does not create disturbance at the liquid / air interface and thus does not disturb the continuous level sensing. Also, since the aspiration port is placed at or very close to the bottom of the aspiration chamber, the liquid inside the chamber can be fully used for sustained reflux and push priming.

The invention belongs to the soil humidity inversion method and particularly relates to the soil humidity inversion method aiming for the ultra wide band radar echo. The soil humidity inversion method aiming for ultra wide band radar echo comprises steps of obtaining near-real-time echo data by using the characteristics of short pulse, strong penetrability, and anti-interference of the ultra wide band radar, utilizing a fuzzy logic system to study and extract characteristic parameters of a membership function from the echo data, and inverting soil volume water content through performing template matching on the membership function. The method provided by the invention is accurate and fast and low in cost, and can monitor the changing of the soil humidity in unattended operation for long time. The low cost of the invention is applicable to generalization and applicable to the assembled radar sensing network performing real time monitoring on the big area soil humidity, and, as a result, the invention provides a reliable mean to realize the accuracy agriculture.

A vehicle tire monitoring system including a tire and wheel assembly. The tire and wheel assembly may include a wheel having a rim portion including an inside surface; a tire including a tire carcass having an inner surface and an outer surface with a tire tread over a radially outer portion of the outer surface, and with the inner surface and the inside surface of the rim portion forming a cavity in which pressurized air is sealed; and a tire sensor assembly mounted on the inside surface of the rim portion in the cavity and including an infrared sensor and a wireless transmitter operatively engaging the infrared sensor, with the infrared sensor oriented to detect a temperature on the inner surface of the tire carcass at a location opposite to a portion of the tire tread.

The invention relates to a trunk line electrification contact system in a strong wind environment and a parameter determination method thereof. A strong wind effect on a wind area and a wind gap enables a contact system to generate a high and complicated vibration and windage yaw, dynamic quality of a pantograph-catenary operation is affected, and pantograph-catenary contact safety and contact system structure safety are threatened. According to the trunk line electrification contact system in the strong wind environment and the parameter determination method thereof, a computational fluid dynamics (CFD) numerical analog computation, a contact system wind-induced response finite-element analysis, a pantograph-catenary simulation, a wind tunnel test and a field engineering test are comprehensively utilized to propose the contact system which is comprehensively excellent in structural strength, rigidity, reliability, wind resistance stability and pantograph-catenary dynamic current collection performance, namely, a simple catenary suspension system is utilized, according to the simple catenary suspension system, a structural height is 1100mm, a span is less than 50m, tensile force of a carrier cable is matched with that of a contact line, the whole suspension system is in a steel cantilever structure, a transformation column and a turnout column are double-cantilever columns, and the contact line and the carrier cable achieve column branch anchoraging. Besides, the contact system which can adapt to the strong wind condition is provided, so that the safe reliability of the contact system structure under the action of long-term strong wind can be guaranteed.

A portable electrocardiograph, in which an exposed electrode is arranged on the end face of one end of a housing, characterized in that: the other end of the housing is of a comfortable structure for holding; the comfortable structure for holding is provided with the other exposed electrode; and the geometric center of the comfortable structure for holding is of an offset toward the other end of the housing and one of the two transverse sides, and a measuring key is arranged in the geometric center of the comfortable structure for holding. The present invention is of a humanized and unique holding structure shape, which ensures the wrist, the arm, and the trunk of the user are closed to form a relative space, thus allowing the user to measure in natural and correct posture so as to make sure the monitored data to be accurate and reliable.

A measurement method of an overlay mark is provided. An overlay mark on a wafer is measured with a plurality of different wavelength regions of an optical measurement tool, so as to obtain a plurality of overlay values corresponding to the wavelength regions. The overlay mark on the wafer is measured with an electrical measurement tool to obtain a reference overlay value. The wavelength region that corresponds to the overlay value closest to the reference overlay value is determined as a correct wavelength region for the overlay mark.

A method of detecting the service lifetime of a filter screen of a vehicle-loaded purifier is provided. The method includes a dust adsorption service lifetime detecting step including S11) collecting calibration date for the dust adsorption service lifetime of the filter screen and forming a database; S12) detecting, in real time, an air pressure value of an interlayer between the filter screen and a draught fan, calculating power, comparing an air pressure value, in the database, corresponding to the calculated power with the detected air pressure value, performing a next step if a deviation is within a preset firs threshold, and otherwise, repeating the S12) step; and S13) performing optical illuminance testing, detecting a gray-scale value of the surface of an HEPA layer of the filter screen, determining a first preset range where the gray-scale value is in, and giving an alarm when the gray-scale value reaches a first dangerous range. A change of air pressures before and after the filter screen, the power of the draught fan, the gray-scale value of the surface of the filter screen, and other parameters are combined to comprehensively determine the service lifetime stage of the filter screen, and therefore a filter screen service lifetime prompting function of the purifier is more precise, the method can adapt to conversion of different environments and can effectively estimate the service lifetime of the filter screen, data are precise and reliable, and secondary pollution in vehicles is avoided.

A circuit for driving a liquid crystal display panel includes a plurality of output circuits that are coupled to respective data bus lines of the liquid crystal display panel, and output liquid crystal drive signals to the respective data bus lines with respective delays that progressively increase from a first one of the data bus lines to a last one of the data bus lines.

A geo-localization device and methodology use a plurality of wireless localization technologies, predictive methods and filtering to deliver accurate and reliable 3-dimensional positioning data for static and moving objects both outdoor and indoor.

The invention relates to a bipolar membrane acid-base liquid generating device for a chromatographic technology. In the invention, a principle of disassociating water with bipolar membranes is adopted, H<+> and OH<-> are generated by disassociating water on the bipolar membranes, the reaction equation is that: H2O=H<+>+OH<->, an ion exchange membrane is used through cooperating with an electric field to make ions to move to a specific part through directional migration and to be subjected to a chemical reaction to prepare the acid-base liquid with a preset concentration. Pure H<+> and OH<-> ions are generated by a system cooperating with the cation exchange membrane and the anion exchange membrane, the concentration of the acid and the base can be changed according to the change of the extraneous electric field, and the device is especially suitable for the ion chromatography field.

The invention discloses an ARM-based electro-hydraulic servo valve frequency characteristic test data acquisition board which comprises a CPU (central processing unit), an AD9833, an AD5160, a blocking circuit, an SPA bus and an AD7323 and is characterized in that: the SPA bus is connected with the CPU, the AD9833, the AD5160 and the AD7323 respectively; the tail end of the AD5160 is connected with the blocking circuit; the blocking circuit is connected with the AD7323 through a channel 0 and connected with a tested object; and the tail end of the tested object is connected with the AD7323 through a channel 1. The invention aims to apply a sine signal with set frequency and set amplitude to the tested servo valve, acquire the output signals of a speed sensor and a displacement sensor of a dynamic measurement cylinder and realize data communication through a serial port and an upper computer.

The invention provides a combustion gas usage safety protection system based on the Internet of Things and a method thereof. The protection system comprises a safety cloud service platform, an intelligent terminal, an alarm device, a safety Internet of Things module, a community joint defense module and a communication module, and the protection method comprises following steps: user real-name registration, positioning and installation of the alarm device, combustion gas household, and processing of a danger generation system. By employing the system, the combustion gas safety community jointdefense method is provided, the response is rapid and reliable, the operation cost is low, the effect is good, problems of man-made gas reversal, water injection, adulteration and real-name usage canbe better solved, and combustion gas usage risks of combustion gas leakage, carbon monoxide standard exceeding and temperature anomaly are reduced.

The invention provides a method for evaluating lithium precipitation and uniformity of a large-size soft package lithium ion battery, which comprises the following steps of: performing a charging testand a discharging test on the lithium ion battery, and recording the capacity, the absolute voltage of the battery, a difference value between an auxiliary tab pair and a main tab and a voltage change condition; comparing the time when the voltage at different positions reaches the steady state with the dV / dT curve and the dV / dQ curve obtained by processing; and according to the dV / dT curve and the dV / dQ curve, judging the rate distribution of lithium ions embedded into graphite and the lithium precipitation amount. The operation method is simple, the battery is not damaged, the data is accurate and reliable, the real-time analysis of the lithium precipitation uniformity of the negative electrode in the lithium ion battery is realized, and key technical support can be provided for the soft package single battery, the module design and the estimation of the actual service life of the battery pack.