33results about How to "Measure quickly" patented technology

The invention relates to a device for measuring jet thrust which includes a guiding mechanism supported by a first bracket mounted on the base and a second bracket, and provided with a bearings group which is fixed together with the support base having a thruster of measured thrust disposed by screws thereon; A trust measurement mechanism comprising a socle girder opened an aligning hole on one end and fixed on the bracket by a fastener through the aligning hole, the top end of which is suspended and higher than the support base, a sensor adhibited on the surface of the suspension girder is electrically connected with acquisition, process and display system outside through signal lines. The measurement device for the invention is independent of operational sensation of mounting and debugging persons, so as to guaranty repetitive calibration and reproducibility of experiment measurement result, and good comparability of thrust measurement result for different operating parameters.

The invention provides a human detecting device and an image enhancement algorithm for stressing the human outline. Under the conditions that the backgrounds are relatively complicated, when a person in a dark colored garment enters an area with a dark colored background, or a person in a bright colored garment enters an area with a bright colored background, because the contrast ratio between the person and the background is low, the outline of the person in the area can not be clearly extracted, and a clear outline of the person can be extracted by grey enhancement. In contrary, if the outline of the person in the area can be extracted clearly enough, the detecting accuracy can be reduced by grey enhancement. In the invention, the background image is divided into a plurality of areas by an image segmentation method, and in each area, whether to carry out grey enhancement is judged according to the degree of similarity of a gray level distribution histogram of a foreground image and a background image. The invention can prevent error extraction of excessive useless noise edge lines, can also stress the outlines of persons, and improves the accuracy of the human detecting device.

The invention provides a temperature prediction method and system. By use of a logarithm-based temperature fitting curve, fitting parameters of the temperature fitting curve are calculated, and the fitting parameters are optimized by use of optimization parameters; a position of a current temperature sampling value n the temperature fitting curve is calculated, and according to the position and the optimization parameters, a prediction time point is obtained; and according to the fitting parameters after optimization and the prediction time point, a temperature prediction value of this time is obtained through the temperature fitting curve, and such that temperature measurement can be accelerated.

A semi-automatic winding machine for manufacturing the spacer with steel band is composed of machine frame, mainframe unit for installing spacer, push-out and pressing unit, pressing roller unit for steel band, driver for driving said mainframe unit, displacement sensor connected to the mainshaft of pressing roller, PLC control board connected via frequency variator to said driver, photoelectric sensor, and angle sensor matched with said photoelectric sensor and connected to said mainshaft unit.

The invention relates to an abdominal organ dynamic contrast enhanced magnetic resonance imaging method based on compressed sensing. The method concretely includes the steps: 1), a magnetic resonance imaging pulse sequence includes a three dimensional gradient echo excitation pulse, a space coding gradient and a signal relaxation sequence, the three of which are explained respectively as follows: 1.1) setting parameters of a radio frequency excitation pulse of a three dimensional gradient echo sequence; 1.2) optimizing a choose-layer phase coding kz and an inner-layer phase coding ky respectively, that is to say, carrying out sub-sampling according to a CS theory, the frequency coding direction kx being fully sampling; and 1.3) applying spoiled gradient to an x gradient direction, a y gradient direction and a z gradient direction in terms of the signal relaxation sequence; 2) a magnetic resonance imaging system carries out compressed sampling of k-space data of all phases of DCE-MRI scanning for an abdominal organ on the basis of a CS optimized magnetic resonance imaging pulse sequence, and obtains original sampling data of a time sequence; and 3) CS reconstruction of the original sampling data is conducted, that is to say, a DICOM image of the abdominal organ is reconstructed and obtained on the basis of a non-linear algorithm with a minimized 1<1> normal form. The method can be widely applied to abdominal organ dynamic contrast enhanced magnetic resonance imaging.

The invention relates to a combined load loading device for a pile foundation in field testing. The combined load loading device is used for applying combined loads to single piles and pile groups in the loading and unloading process in various fields. The loading device comprises a vertical loading assembly, a horizontal loading assembly, a test pile vertical deformation measuring assembly and a test pile horizontal deformation measuring assembly, wherein the vertical loading assembly is used for applying vertical loads to the pile foundation in field testing, the horizontal loading assembly is used for applying horizontal loads to the pile foundation in field testing, the test pile vertical deformation measuring assembly is used for measuring the deformation after vertical loading of the test pile, and the test pile horizontal deformation measuring assembly is used for measuring the deformation after horizontal loading of the test pile. Compared with the prior art, the limitation of the singular loading direction in field loading tests through original test devices of the type is broken through, combined load tests can be carried out on various types of pile foundations in field testing, vertical and horizontal loads which are randomly combined can be applied in different loading sequences, and therefore the combined bearing performance of the pile foundation can be better analyzed.

The invention discloses a fluvial cross section surveying and mapping system which comprises a hardware system and a software system. The hardware system comprises a high-precision positioning module, a water measuring module, a data receiving module, a data processing module, a data transmitting module and a data terminal module. The software system comprises a graph drawing module. Highly-integrated automatic measurement is achieved. High-efficiency, all-weather and high-precision measurement of the underwater cross section is achieved, the work requirements of water conservancy hydrological workers for overwater engineering and water area measurement can be sufficiently met, and manual operation workloads and data processing tediousness are reduced.

The invention relates to an element of interior orientation and a distortion tester applied to a digital navigation camera. The distortion tester comprises a light source, a rotary table and a parallel light pipe, wherein the parallel light pipe is positioned between the light source and the rotary table and arranged on the same optical axis with the light source. The invention provides an element of interior orientation and a distortion tester with simple structure, convenient operation and high precision.

The invention provides a device for synchronously measuring concentration, thickness and temperature of a liquid film. The device is characterized by comprising three laser light sources, a wavelength division multiplexer, a first collimator, a liquid film carrier, a second collimator, a wave separator, three spectrum collection parts and a computer, wherein the three laser light sources transmits laser beams of different wavelengths; the wavelength division multiplexer is connected with the three laser light sources, and the three laser beams are coupled into one beam; the first collimator is connected with the wavelength division multiplexer and used for focusing the laser beam; the liquid film carrier is arranged right below the first collimator; the second collimator is arranged right below the liquid film carrier and used for collecting laser beams penetrating through the liquid film carrier and focusing the laser beam; the wave separator is connected with the second collimator and separating the laser beam into three laser beams in different wavelengths; the three spectrum collection parts are respectively connected with the wave separator and used for receiving and measuring the intensity of each laser beam separated by the wave separator; the computer is respectively connected with the three spectrum collection parts and used for processing the intensity of the laser beams measured by the three spectrum collection parts and calculating the concentration, thickness and temperature value of the to-be-detected liquid film.

An embodiment of the invention provides an atom interference gravity gradient full-tensor measuring system and method. The system comprises an interference device, a first direction laser generator and a second direction laser generator, the interference device comprises multiple vacuum cavities, and a two-component atom group is prepared in each vacuum cavity and comprises a first component atomgroup and a second component atom group; the first direction laser generator generates first direction laser, the second direction laser generator generates second direction laser, the first directionlaser and the second direction laser interfere with the first component atom group and the second component atom group respectively to form interference loops, the interference loops of the first direction and the second direction are implemented at the same time and do not interfere with each other, quick measuring of gravity gradient full-tensor can be realized, and measuring speed and efficiency are improved.

The invention aims to provide a measuring device with simple structure, low cost and convenient use and maintenance for the rotary inertia of a steering wheel and a measuring method thereof. The measuring device comprises a rigid substrate; the substrate is rigidly fixed with a steel pipe of which the end part can fix the steering wheel to be measured; at least one piece of rectangular strain gauge is adhered to the steel pipe, and each piece of strain gauge of the rectangular strain gauge forms an angle of 45 degrees with an axis of the steel pipe; and the rectangular strain gauge is connected with a data acquisition unit with a strain measurement module. The measuring method of the measuring device comprises two steps of marking the torsional rigidity of the steel pipe and measuring the rotary inertia of the steering wheel to be measured. The measuring device has the advantages of simple structure, low cost and failure rate, and convenient use and maintenance; and the measuring method of the measuring device for measuring the rotary inertia of the steering wheel has the advantages of simplicity, convenient operation, and accurate measurement, can replace the prior relative and complicated measuring devices, and effectively improves the speed of measurement, research and development of products.

The invention discloses a distributed optical fiber sensing system based on mode coupling. The distributed optical fiber sensing system based on mode coupling is characterized by comprising, at a transmitting end and a receiving end, a few-mode fiber which has the length of L, wherein the transmitting end and the receiving end are connected through the few-mode fiber of which the length is L, andthe transmitting end is used for generating a pulsed light and injecting into a basic mode of the few-mode fiber; the receiving end is used for receiving an optical signal of the a few-mode fiber andconverting the optical signal into an electric signal; repetition frequency of the pulsed light is R and pulse width of the pulsed light is T; Formula (represented by a formula in specification), T isgreater than or equal to 1ps and less than or equal to 1ns, Tau<DMD> refers to differential mode group delay between the basic mode of the few-mode fiber and the highest order mode supported by the few-mode fiber. The distributed optical fiber sensing system based on mode coupling provided by the invention can realize high sensitivity and high precision measurement for optical fiber radial stress, and also can provide measurement of stress of any angle along an optical fiber radial direction, and has important significance in actual use.

The invention relates to a fast analyzer for determining the content of heavy-metal cadmium in foodstuffs. The fast analyzer comprises a heavy-metal cadmium enrichment device, an X-ray fluorescence analyzing device, a sample cup (5) and an intelligent control device, wherein determined foodstuffs are subjected to carbonization and then ashing by adopting the heavy-metal cadmium enrichment device, so as to enrich cadmium in the determined foodstuffs; ash in the obtained determined foodstuffs is placed in the sample cup (5) and is pressed into a sample, the weight of the sample and the weight of the ash are input, then, the X-ray fluorescence analyzing device carries out measurement so as to obtain the signal intensity of cadmium, and the content of cadmium in the sample is calculated. Due to the adoption of sample carbonization and ashing treatment, physical pressing and X-ray fluorescence spectrometry, the analyzer has the characteristics of simplicity in sample preparation, high measuring speed, accuracy in result, convenience in field measurement, and the like.

The invention discloses a displacement controlled micro thin plate bending rigidity measurement device and a working method thereof. The measurement device comprises a pedestal, a test piece, a test piece clamping apparatus, a measuring point positioning apparatus, a measurement apparatus, a signal processing apparatus and an operation and display apparatus. A clamp block and a pedestal cover plate are connected through bolts, a stud and the clamp block are connected through thread, a clamping piece is provided with a hole, passes through the stud and can move up and down, a nut fixes the clamping piece, the test piece and the clamp block to achieve fixed constraint of one end of the test piece, and bending rigidity measurement can be carried out on a thin plate with one fixed constraint end and one free end. The device is suitable for bending rigidity measurement of a thin plate with a length of 100-200mm and a width of 50-150mm. rigidity measurement points can be adjusted through X direction horizontal guide rails and Y direction horizontal guide rails. The device can achieve one-key zero setting and measurement, can directly display the rigidity value, and is fast in measurement.

The invention discloses a method for detecting an online plate width of float glass in real time and belongs to the technical field of manufacturing of the float glass. The device comprises a glass conveyer belt, wherein two monitors are arranged above the glass conveyer belt; the monitors are electrically connected with an image supervisor and a video acquisition card respectively through cables; the video acquisition card is electrically connected with a computer processing system; and the monitors are industrial monitoring lenses which are arranged on two sides above the glass conveyer belt respectively. Compared with the prior art, the device and the method have the beneficial effects that: the width and the position of a glass plate can be detected in real time and accurately; a real-time pull quantity can be calculated according to information, such as the width, the speed and the like, of the glass plate, and precise control over float production is facilitated; and meanwhile, the device and the method have the advantages of high measurement speed, zero mechanical abrasion, high anti-interference capacity and the like.

The invention discloses a compressor blade size accurate measurement device. The compressor blade size accurate measurement device comprises a production line test platform which can drive a compressor blade to be moved and positioned along a production line; and the production line test platform is provided with a compressor blade feeding device, a compressor blade blanking device and a first measurement device for measuring a thickness and a and a planeness of a compressor blade and a width measurement device for measuring a width of the compressor blade, which are positioned between the compressor blade feeding device and the compressor blade blanking device. The device adopts full-automatic equipment; each station is tightly combined; various sizes of the blade can be efficiently and highly accurately detected; and demands for mass production are met.

The invention relates to a measurement target for characterizing shock wave speed of a medium Z opaque material and a method, and belongs to the technical field of high-pressure characteristics of thematerial. The measurement target is located at a diagnostic hole of a drive black cavity and comprises an ablation layer, a tracer layer and a sample layer, wherein the ablation layer is arranged toface the diagnostic hole; the tracer layer is made of a transparent material; the sample layer is a medium Z opaque material sample layer, is of a stepped structure and comprises a first sample layer,a second sample layer and a third sample layer which are arranged side by side in sequence, and the thicknesses of the first sample layer, the second sample layer and the third sample layer are increased in sequence. Compared with a traditional wedge-shaped sample, planar sample design is adopted, machining is easy, the machining precision is high, higher-precision measurement can be realized, the requirement for experimental conditions can be broadened to the greatest extent, an experimental result derives from the same driving source, possible difference of the experimental conditions between different times is eliminated, consistency and reliability of data are guaranteed, and meanwhile, experimental resources are saved.

The invention discloses a gun head with a super-oleophobic inner wall, a super-oleophobic outer wall and an oleophylic muzzle platform. The manufacturing method of the gun head comprises the followingsteps of: placing the gun head of a pipette on combustion flame of an atomized silane solution to be combusted to form a silicon dioxide layer; performing soaking in a fluorine-containing silane coupling agent solution to form a fluorine-containing silane layer; and coating the muzzle platform with an ethanol solution containing clay and nano silicon dioxide to form a lipophilic nano silicon dioxide coating. The invention further discloses a pipette comprising the gun head, one end of the gun head is connected with a pipette tube, and the inner cavity of the pipette tube comprises a thin cavity and a thick cavity; an elastic piece is arranged in the thick cavity, a pressing piece is arranged at one end of the elastic piece, a plunger piece is connected to the end, close to the gun head, of the pressing piece, and limiting adjusters used for limiting the pressing piece at different positions are arranged on the gun barrel. The pipette prepared by adopting the preparation method disclosed by the invention can realize rapid measurement of liquid and does not cause liquid residue.

The invention discloses a stable evaluation method for electronic blood glucose measurement, which belongs to the field of medical measurement devices. The method comprises the steps of monitoring the variation of current in the reaction process in real time by utilizing an electrochemical analyzer, extracting n sample current values under the situation that the detection current is stable, getting an average value, obtaining a real-time amplified voltage value through a voltage amplifier, and obtaining a measurement value of the blood glucose through an analog-digital conversion and functional conversion method. By adopting the method, the error of the blood glucose electronic measurement caused by uncontrollable factors can be reduced, so that a stable and precise blood glucose value can be obtained.

The invention belongs to the technical field of flow field testing, and particularly relates to a probe for measuring whole parameters of a transonic three-dimensional steady-state flow field. The probe comprises a probe head, a temperature sensor, convection heat exchange holes, a heat insulation sealing element, a temperature sensor cable lead-out channel, a pressure measuring hole, a pressure guiding pipe channel, a probe support, a pressure guiding pipe and a temperature sensor cable, wherein the probe head is cylindrical, a circular table structure extends out from a cylindrical top end in a direction perpendicular to a center line of a cylinder, a pressure measuring middle hole is formed in a top surface of the circular table, and a pressure measuring upper hole, a pressure measuringlower hole, a pressure measuring left hole and a pressure right hole which are free from communication are uniformly formed in the side surface of the circular table; six circular convection heat transfer holes are formed in a leeward side, opposite to the circular table, of the probe head, and a low-speed separation area is distributed on the leeward side of the probe head. The probe disclosed by the invention can measure the total temperature, total pressure, static temperature, static pressure, Mach number, deflection angle, pitch angle, speed and density of the transonic three-dimensionalsteady-state flow field at the same time, and has the features of small size, small airflow non-sensitive angle, high reliability, high space resolution and high measurement precision.

The invention discloses a measuring tool for detecting car wheel hub blank deformation. The measuring tool comprises a measuring tool body (1) and is characterized in that the measuring tool body (1) comprises a lifting handle (11) and a main scale (12), wherein two circular hanging holes (121), two positioning claws (122) and two measuring claws (123) are symmetrically arranged on the main scale (12); a measuring surface I (1231) and a measuring surface II (1232) are arranged on each measuring claw (123); the lifting handle (11) is welded on the middle upper position of the main scale (12). The measuring tool disclosed by the invention is simple to operate, visual and convenient, quick in measuring, and durable.

The invention provides a device for measuring a cross-ball distance, which comprises a measuring rod, one end of the measuring rod is connected with a zero-setting dial indicator, the other end of the measuring rod is connected with a measuring base, a measuring head of the dial indicator faces the measuring base, the measuring base is provided with a special-shaped hole, and a measuring ball is arranged in the special-shaped hole. The bottom of the measuring ball protrudes outwards relative to the bottom face of the measuring base, and a notch is formed in a corner formed by the inner side face of the measuring base and the bottom face to expose the measuring ball. The device for measuring the cross-ball distance provided by the invention can accurately and quickly measure the axial cross-ball distance from the conical surface step to the end surface of a fuel channel end part.

The invention discloses a vortex thickness measuring method comprising the following steps: 1) taking one hole center position as a first measuring point A; 2) determining a central angle theta of thecircle center O of a circle where a uniform distribution hole is located and two adjacent holes; 3) rotating a first measurement point A for an angle around the circle center O to obtain a second measurement point B; 4) passing the circle center O, drawing a central axis L parallel to a connection line of the points A and B to obtain a distance X between the AB connection line and the L line andobtain a distance Y between the point A and the point B; 5) deviating the measured central axis L for the X distance to obtain an axis L1, performing measurement by a measuring head with L1 as the central axis, performing measurement at the point A to obtain a first measurement value, then, moving for the Y distance to reach to the point B to measure to obtain a second measurement value; and 6) taking the minimum value in the first measurement value and the second measurement value as a thickness true value. According to the method, the two measurement points are determined by firstly mappingthe hole position of the product, the relative positions of the two measurement points can ensure that at least one of the two measurement points does not fall into the hole, thus at least one of thetwo measurement values is a true value.

The present invention relates to an acoustic wave diagnostic device and a method for operating the acoustic wave diagnostic device, so that the time and effort needed for an operator to input a measurement point can be reduced, a measurement can be immediately and easily measured while the inter-operator variation in measurement is reduced. The acoustic wave diagnostic device (1) is provided withan image display unit (14) for displaying an acquired acoustic wave image; a measurement item designation reception unit (28) used for receiving a designation of a measurement item associated with themeasurement subject; a detection measurement algorithm setting unit (29) for setting a detection measurement algorithm on the basis of the received measurement item; a position designation receptionunit (30) for receiving a designation of a position of the measurement subject on the acoustic wave image (Ib) displayed by the image display unit (14); and a measurement unit (31) used for detectingthe measurement subject, once the designation of a position is received, on the basis of the received position and detection measurement algorithm and measuring the detected subject.

A measuring unit for measuring transmission parameters of a device under test, comprising a control unit, a transmitter and receiver unit and an evaluation unit. The transmitter and receiver unit is connected via a first connection to the control unit and via at least one transmission channel to the device under test. The device under test is connected via a second connection to the evaluation unit, wherein, for the measurement of the transmission parameters of the device under test, control-data packets and test-data packets are transmitted separately between the control unit and the evaluation unit, and wherein a transmission channel for the test-data packets can be disturbed in a targeted manner.

The invention discloses a method and a device for compensating Coriolis force effect in fluorescence collection, and belongs to the field of cold atom interference physics. The system comprises a lens set unit used for reducing the influence of stray light and a multi-pixel silicon PIN photodiode used for positioning the atomic space position. A fluorescence signal emitted by stimulated radiation of an atomic group in a vacuum cavity is detected, the enhanced fluorescence signal is collected by a multi-pixel array detector, the radius of the atomic group is obtained through fitting of an approximate Gaussian curve, a gravitational acceleration deviation value is calculated through a Coriolis force formula, compensation of a gravitational acceleration value is completed in combination with an experimental test value, and the measurement accuracy is improved. The Coriolis force effect is overcome, the measurement precision and uniformity are further improved, and the physical parameter measurement, the signal-to-noise ratio and the measurement accuracy in the fluorescence detection process in the field of cold atom physics are greatly improved. The device has the advantages of background light resistance, high signal-to-noise ratio, compact structure, good stability, low manufacturing cost, convenience in use, high adjustment sensitivity and the like.

The invention discloses a sun tracking system based on a mobile unstable platform. The sun tracking system comprises a two-dimensional rotary table, a single-arm probe, a large-view-field fisheye imaging system, a lower computer control system, an industrial personal computer and a GPS module. Two parallel light cylinders, namely a measuring light cylinder and an imaging light cylinder, are mounted at the front end of the single-arm probe; the imaging light cylinder is a small-view-field fine tracking imaging system, and the measuring light cylinder is used for collecting data of sunlight and transmitting the collected data to the lower computer control system; the large-view-field fisheye imaging system is used for capturing azimuth information of the sun and transmitting the azimuth information of the sun to the industrial personal computer; the industrial personal computer serves as an integrated operation platform and controls operation of all devices in a coordinated mode, and the lower computer control system controls the two-dimensional rotary table to rotate so that automatic tracking and signal measurement of the sun can be achieved. The invention further discloses a sun tracking method based on the mobile unstable platform. The limitation problem that a sun tracking system in the prior art cannot perform mobile tracking can be solved.

The invention discloses a calibration method for an installation error of a sensor module in a three-dimensional space, comprising the following three calibration steps: (1) under a graphical rectangular coordinate system in a three-dimensional space, by taking a plane P where x and y axes are located as a horizontal plane, placing a sensor device S, and measuring an included angle alpha between an axis Ux of a tilt sensor module T and the plane P and an included angle beta between an axis Uy and the plane P; (2) by taking a plane Q where x and z axes are located as a horizontal plane, placinga sensor device S, and measuring an included angle (described in the specification) between an axis Ux of a sensor module T and the plane Q; and (3) respectively obtaining vectors (described in the specification) corresponding to the axes Ux and Uy by virtue of the included angles alpha and beta and the other included angle (described in the specification), and obtaining vectors after rotation (described in the specification) by virtue of rotation matrixes corresponding to premultiplication (described in the specification), thus the axis Ux is calibrated to a forward direction of the z axis and the axis Uy is calibrated to a forward direction of the y axis. The calibration method disclosed by the invention can realize installation calibration on a relatively small deviation produced as the sensor module I is installed in the three-dimensional space, so that measurement accuracy is improved.

The invention discloses a device and a method for measuring the azimuth pointing precision of a radar servo base. The device comprises a collimator, a high-precision adjustable platform, a theodolite, a fixing tool and an optical platform. The collimator serves as an observation reference, software controls the radar servo base to rotate by a specific angle value, the theodolite is rigidly connected with the radar servo base, the actual rotation value of the radar servo base can be measured, and the absolute value of the difference between the azimuth feedback value of the radar servo base and the actual rotation angle value of the azimuth measured by the theodolite is calculated, and the the absolute value is the pointing precision of the radar servo base at the angle. According to the device and method, the pointing precision of the radar servo base is accurately measured in the internal field, the measuring method is simple and easy to operate, the process controllability is good, the measuring time is shortened, and the measuring precision is improved.