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35results about How to "Measure objectively" patented technology

Automatic measuring method and device of intrapartum cephalopelvic relationship based on ultrasonoscopy

The invention discloses an automatic measuring method and device of intrapartum cephalopelvic relationship based on ultrasonoscopy. The automatic measuring method comprises the steps that a puerpera transperineal ultrasonoscopy data set for training is obtained, and taken as a training set; data in the training set are input into a constructed neural network model, an end-to-end split model is trained, and interested areas of the symphysis pubis and the fetus head are split; training is conducted repeatedly, a trained neural network model is obtained; and in practice application, the ultrasonoscopy collected in real time is input into the trained neural network model, the interested areas of the symphysis pubis and the fetus head are obtained, enhancing and edging fitting are conducted onthe interested areas, and the fetus head angle of descending AOD of and the symphysis pubis-fetus head distance SFD are calculated. Compared with an existing intrapartum fetus parameter measuring method, according to the automatic measuring method and device, intrapartum fetus parameters can be accurately and objectively measured in real time, any priori knowledge and human intervention are not needed, the requirement of real-time application can be met, and clinical application prospects are achieved.
Owner:JINAN UNIVERSITY

Gear internal diameter measurement mechanism based on self-centering and measurement method thereof

The invention relates to a gear internal diameter measurement mechanism based on self-centering and a measurement method thereof. The measurement mechanism comprises a centering driving portion, a passive rotation measuring portion and an equipment main body portion, wherein a body and a passive rotation sleeve are respectively mounted on a platen, the body is provided with a cylinder, a piston ofthe cylinder is connected with a lifting sliding table, a rotation fixing sleeve is mounted on the lifting sliding table, a power source is mounted on the rotation fixing sleeve through a fixing support, a rotation shaft is rotatably mounted on the rotation fixing sleeve, one end is connected with an output end of the power source, the other end is connected with a positioning top tip, a rotationdisc and a rotation seat are arranged below the positioning top tip, the rotation seat is rotatably mounted on the passive rotation sleeve, the rotation disc is mounted on the rotation seat and is used for carrying a to-be-measured gear, and a gauge block type displacement sensor is arranged in the rotation seat and is mounted on the passive rotation sleeve through a sensor support. The measurement mechanism is advantaged in that automatic centering, active pressure driving, passive rotation and dynamic measurement are realized, the measurement mechanism is suitable for measuring gears in multiple internal diameter dimensions, measurement precision is high, and work reliability is realized.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

Method for measuring three-dimensional structure of forest gap

The invention relates to a method for measuring a solid structure of a forest gap which includes the following steps of: using a digital camera provided with a fish-eye lens to vertically upwards shoot two semi-spherical images at the different height of any position in the forest gap; measuring the parameters of the forest gap; processing the two semi-spherical images and recording the coordinates of the edge points of a forest canopy in the forest gap; calculating the area and the shape of the forest gap and the heights of the forest canopy of the forest gap of each orientation according to the protection principle of the fish-eye lens as well as each coordinate point and the parameters of the forest gap. The invention firstly provides a method for measuring the solid structure of the forest gap, can fast and objectively measure the area and the shape of the forest gap and the heights of the edge wood of the forest gap of each orientation, is easily used, only two semi-spherical images is shooted when measuring the area and the shape of the forest gap, only two parameters of a gradient and an aspect are added when calculating the heights of the edge wood of the forest gap of each orientation with higher measuring precision; besides, the measuring result is not affected by the measuring position.
Owner:SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI

Method for determining stem content of tobacco shreds based on near infrared spectrum technology

The invention discloses a method for determining the stem content of tobacco shreds based on the near infrared spectrum technology. The method comprises steps of preparing standard tobacco powder samples with different stem contents; collecting a near infrared spectrogram of each standard tobacco powder sample, and carrying out order derivation to obtain a new spectrogram; obtaining a significantfluctuation interval and a standard curve; calculating an Euclidean distance from each new spectrogram to the standard curve in each significant fluctuation interval and adding the Euclidean distancesof the same new spectrogram in all significant fluctuation intervals to obtain a similarity coefficient of each new spectrogram; fitting a relational expression of the stem content and the similaritycoefficient according to the similarity coefficient of each new spectrogram and the stem content of the corresponding standard tobacco powder sample; obtaining the similarity coefficient of to-be-detected tobacco shreds, and calculating the stem content in the to-be-detected tobacco shreds based on the relational expression of the stem content and the similarity coefficient. The method is a brand-new method capable of accurately, quickly and objectively measuring the stem content in the tobacco shreds, and meets the technical requirements of stem content measurement in the prior art.
Owner:CHINA TOBACCO HUNAN INDAL CORP

Determination method of various components in Yupingfeng preparation

The invention relates to a content determination method for multiple components in a Yupingfeng preparation. The method comprises the steps of: (1) taking the Yupingfeng preparation, crushing or not crushing it, then performing precise weighing, adding methanol to conduct reflux extraction for 1-3h, carrying out filtration and concentration, then adding methanol to a constant volume, thus obtaining a test solution; (2) precisely weighing the reference substance prim-o-glucosylcimifugin, calycosin-7-glucoside, cimifugin, 5-O-methylvisammioside, sec-o-glucosylhamaudol, calycosin, formononetin, atractylenolide III, atractylenolide I and atractylenolide II respectively, and adding methanol to perform dissolving to a constant volume, thus obtaining a mixed reference solution; (3) conducting determination: precisely sucking the test solution and the mixed reference solution respectively, injecting them into a high performance liquid chromatograph, carrying out gradient elution under certain mobile phase condition, and performing multi-wavelength simultaneous monitoring, thus obtaining the content. The method provided by the invention can accurately determine the content of 10 components in the Yupingeng preparation, and can objectively, comprehensively and sensitively reflect the quality condition of the Yupingfeng preparation.
Owner:GUANGZHOU XIANGXUE PHARMA CO LTD

Indentation Measuring Device for Mechanical Properties of Remnant Limb Soft Tissue

The invention discloses an indentation measuring device for mechanical properties of soft tissue of residual limbs, belongs to the field of medical engineering prosthetic fitting detection, and aims at making the structure of a measurement device simple and portable and making measurement data more accurate. The indentation measuring device for the mechanical properties of the soft tissue of the residual limbs is characterized by comprising a rigid shell, wherein the inner side of the rigid shell is provided with an air bag, the air bag is filled with a certain pressure of gas, the side face of the rigid shell is provided with an avoidance hole, the rigid shell is provided with an indentation measuring device body, the indentation measuring device body comprises a fixedly arranged holder,an output end of the holder is connected with a linear stepping motor, the linear stepping motor is provided with displacement measurement equipment for measuring the moving distance of an output endof the linear stepping motor, the output end of the linear stepping motor is connected with a pressure sensor, and the pressure sensor is connected with a pressing rod passing through the avoidance hole. The indentation measuring device solves the problems that an existing structure is complicated in structure, and poor in portability, and a vertical relation between a pressure head and measurement tissue is difficult to ensure, a compression state of a prosthetic socket to the residual limbs is fully simulated in the measurement process, and the squeezing effect of the surrounding soft tissueon a measurement site is avoided as much as possible.
Owner:BEIHANG UNIV

A method for determining the content of stems in cut tobacco based on near-infrared spectroscopy

The invention discloses a method for determining the content of stems in cut tobacco based on near-infrared spectroscopy, comprising: preparing standard tobacco powder samples with different stem contents; collecting the near-infrared spectrum of each standard tobacco powder sample, and performing order Derivation to obtain a new spectrum; obtain a significant fluctuation interval and a standard curve; calculate the Euclidean distance from each new spectrum to the standard curve in each significant fluctuation interval and the Euclidean distance of the same new spectrum in all significant fluctuation intervals respectively Add the similarity coefficient of each new spectrum; fit the relationship between the stem content and the similarity coefficient according to the similarity coefficient of each new spectrum and the stem content of the corresponding standard tobacco powder sample; obtain the similarity coefficient of the cut tobacco to be tested, The stalk content in the cut tobacco to be tested was calculated based on the relationship between the stalk content and the similarity coefficient. The above method is a brand-new method that can accurately, quickly and objectively measure the content of stems in cut tobacco, and meets the technical requirements for the determination of the content of stems at the present stage.
Owner:CHINA TOBACCO HUNAN INDAL CORP

Measurement device and method of visible equipment imaging brightness

The embodiment of the invention relates to the technical field of the electronics, and discloses a measurement device and method of visible equipment imaging brightness. The measurement device of thevisible equipment imaging brightness comprises camera equipment co-line with a principle optic axis of the visible equipment, and a processor; the processor is in communication connection with the camera equipment; the processor is used for the camera equipment to capture a testing image displayed by the visible equipment and taking the captured image as a reference image, wherein the testing image is a pure white image; the processor is further used for acquiring color brightness of each pixel point of the reference image, and acquiring the real imaging brightness information of the visible equipment according to the color brightness of each pixel point and the brightness function of the real brightness, wherein the brightness function is a mapping relation of the color brightness and theactual brightness. The embodiment of the invention further provides a measurement method of visible equipment imaging brightness. By adopting the measurement device disclosed by the embodiment of theinvention, the imaging brightness of the visible equipment can be objectively measured, and the device is low in cost, fast and efficient and high in accuracy.
Owner:HUAQIN TECH CO LTD

Elevator hydraulic buffer resetting performance dynamic measuring method and tester adopted by method

The invention provides an elevator hydraulic buffer resetting performance dynamic measuring method. The measuring method comprises the following steps of first, measuring an initial distance between a blocking plate and the ground of an elevator bottom pit; second, measuring a distance between the blocking plate and the ground of the elevator bottom pit; third, judging whether an elevator car goes down or not and whether the elevator car is contacted with an elevator buffer; fourth, measuring a distance between the elevator car and the elevator bottom pit; fifth, judging whether the elevator car goes up or not; sixth, judging whether the elevator buffer finishes resetting; and seventh, processing data to obtain resetting time of the elevator buffer and analyzing the resetting performance of the elevator buffer. The measuring method can quickly and accurately measure the resetting time of the buffer, ensures the buffer to meet the safety requirement, and accordingly improves the measuring accuracy and the work efficiency of inspectors. The invention further provides a tester adopted by the method. The tester is simple in installation and meets the requirements of newly adopted elevator inspection procedures.
Owner:SHUNDE BRANCH GUANGDONG INST OF SPECIAL EQUIP INSPECTION & RES

A Vector-Based Method for Measuring Complex Electromagnetic Environment

InactiveCN103760426BSolving the electromagnetic environment complexity assessment problemResolve metricsElectromagentic field characteristicsFrequency spectrumSpectrum analyzer
The invention belongs to the technical field of electronic information system testing evaluation and discloses a complex electromagnetic environment measuring system and method based on vectors. The measuring system comprises an electromagnetic environment parameter collecting system and an electromagnetic environment measuring system, the electromagnetic environment parameter collecting system is connected with the electromagnetic environment measuring system through a network, and the electromagnet environment parameter collecting system is composed of a spectrum analyzer, a signal direction-finding system and a system time service device which is respectively connected with timing system devices of the spectrum analyzer and the signal direction-finding system. According to the measuring method, an electromagnetic environment parameter data center is established, parameters of a time service electronic information system are recorded into, and the electromagnetic environment complexity is calculated. The problem, faced by time service electronic information equipment, of evaluating the electromagnetic environment complexity is solved, all factors of the electromagnetic environment are accurately measured, and electromagnetic environment setting bases are provided for test evaluation of the electronic information system and electromagnetic environment adaptability training of the electronic information system.
Owner:STATE KEY LAB OF COMPLEX ELECTROMAGNETIC ENVIRONMENTAL EFFECTS ON ELECTRONICS & INFORMATION SYST

A method and device for measuring eye parameters

An embodiment of the present invention provides a method and device for measuring eye parameters, the method comprising: acquiring a photographed image of the eye; photographing the image includes photographs and medical detection images; identifying the cornea and eyelids of the eye in the photograph, and According to the cornea and eyelid, generate a marking line marking the distance between the end point of the cornea and the corresponding end point of the eyelid; determine the first number of pixels occupied by the marking line in the photo taken as the first measurement result of eyelid retraction; identify medical detection Image to obtain the bone structure of the eye; and determine the part surrounded by the bone structure as the target to be segmented; obtain the gray value of the image of the target to be segmented, and extract the segmented eye muscles according to the gray value of the image ; Determine the measurement result of the cross-sectional area of ​​the eye muscle according to the second number of pixels occupied by the eye muscle and the preset corresponding relationship. The apparatus performs the method described above. The method and device provided by the embodiments of the present invention can measure ocular parameters objectively, accurately and efficiently.
Owner:HANGZHOU ZHUOJIAN INFORMATION TECH CO LTD

Performance Evaluation System Based on Mathematical Statistics

The invention provides a performance appraising system based on mathematical statistics. The performance appraising system is characterized by involving the following steps that firstly, enterprise basic management elements are determined, the quality characteristics of the basic management elements are recognized, and key control indexes are determined; secondly, simulation quantification is conducted on the key control indexes through an analytic hierarchy process, and weight coefficients, shown in the specification, of complexity and importance of the key control indexes are determined; thirdly, intensity coefficients of department work are calculated through medians; fourthly, the reach quality level of the key control indexes is calculated through an efficacy coefficient method, and an efficacy coefficient value is acquired; fifthly, the performance is calculated through the weight coefficients acquired in the second step, the strength coefficients acquired in the third step and the efficacy coefficient value acquired in the fourth step. The complexity and the importance of the indexes are scientifically calculated through the analytic hierarchy process, a median class and the efficacy coefficient method, simulation quantification of a qualitative problem is achieved, the work intensity is more objectively measured, and quality difference evaluation is more effective.
Owner:YINCHUAN COMPANY NINGXIA HUI AUTONOMOUS REGION TOBACCO
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