20 results about "Objective measurement" patented technology

The present invention proposes a method and system for evaluating the wind vibration performance of an automobile, which specifically include: a wind tunnel test of the wind vibration performance of the whole vehicle, and a road test of the wind vibration performance of the whole vehicle; scoring the wind vibration sound performance of the whole vehicle based on the objective measurement results and subjective scores of the wind tunnel test and the objective measurement results and subjective scores of the road test; establishing a database and performing analysis, setting 10 levels from L1 to L10 and corresponding scores for each level, to form a wind vibration level table; determining the wind vibration performance level of the tested vehicle model by comparing the wind vibration level table; the present invention is not limited to sound pressure level, and objective measurement results such as loudness and speech clarity and their corresponding recommended values ​​can be added as objective evaluation indicators; it is not limited to collecting objective data from the driver's outer ear, and collection from any point in the vehicle can be added; it is not limited to recording test conditions in the existing wind tunnel and road test condition tables, and can be added or modified, such as changing coasting to uniform acceleration.

The embodiment of the application provides a kind of water transparency measurement system, method, equipment, medium and program product, it is related to water quality detection technical field, the system includes: measuring equipment and electronic equipment;Measuring equipment is obtained by gathering in the process of sinking from water surface into the water to be measured water data sequence including multiple groups of water data, each group of water data includes the light intensity data and water depth data collected at the same time;Electronic equipment inputs water data sequence into water transparency calculation model, obtains the water transparency that water transparency calculation model is based on water data sequence output.In the above system, water transparency is obtained by the light intensity data and water depth data of objective measurement, and is calculated by water transparency calculation model, and does not need to rely on the subjective visual observation of measurement personnel, to ensure the objectivity and consistency of measurement process, and obtain accurate water transparency measurement result.

Presented herein are substantially automated techniques that enable an electro-acoustic or other hearing prosthesis implanted in a recipient to use objective measurements to determine when the recipient is likely experiencing sound perception changes. Once one or more perception changes are detected, the hearing prosthesis may initiate one or more remedial actions to, for example, address the perception changes. As described further below, the one or more remedial actions may include adjustments to the recipient's operational map to reverse the one or more perception changes.

The application provides a flash fusion frequency detection device for objective measurement of human fatigue state, which at least comprises: the flash fusion frequency detection device (1) is integrated with a power line, a flash device (2) arranged on the surface of the flash fusion frequency detection device (1), and a detection result selection device (3) internally integrated with a flash frequency control module, a communication module, a storage module, a data processing module and a fatigue judgment module, and the fatigue condition of a detected person is determined through the judgment process of the data processing module and the fatigue judgment module under different conditions. The device can effectively prevent the subjective cheating behavior of the testee when detecting the flash fusion frequency of the human body, can finely manage the detection process, and can effectively reduce the deviation of the detection result caused by the misoperation of the detected person.

An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.

Intelligent distance and lane change assistance system for motor vehicles, comprising at least one radar sensor for measuring the distance and relative speed of a following vehicle, at least one camera unit for optically detecting following traffic, an electronic evaluation unit for calculating a safety parameter based on distance, relative speed and time-to-collision, an internal optical display element to indicate lane change readiness to the driver, and an external optical display element to indicate the traffic situation to following vehicles, wherein the evaluation unit automatically switches between at least two display levels depending on the safety parameter, wherein a red display signals an unsafe lane change due to insufficient distance of the following vehicle, and a green display indicates a safe lane change or a stable traffic situation.and wherein the system is designed such that the external display is controlled exclusively on the basis of objective measurement data determined by the sensors.

This invention provides a medical training system, comprising: a standardized feature library construction module, which breaks down target medical operations into multiple standard steps and defines a standard value range for each step; a competency standard library construction module, which defines multiple competency levels and associates them with corresponding target medical operations; a case provision module, which provides simulated clinical cases according to competency levels; an error recording module, which determines that an operation error is triggered when the monitored operation feature data deviates from the standard value range, and generates a personal error file; and a targeted training module, which, in response to a selection command, retrieves the training scenario of the operation error node and generates a specific training task for the operation error. Therefore, this invention establishes an objective, quantitative, and standardized operation evaluation system, transforming subjective operation evaluation into objective measurement, enabling graded judgment of operation compliance, reducing the subjectivity and variability of human evaluation, and improving the effectiveness of nurse training.

A method of detecting solid particles in a production zone includes stages at which: at least one well operating regime is established, where the presence of fluid flow carrying solid particles are both present along the wellbore or in one or more formations. At least one instrument for objective measurements of an acoustic signal amplitude is run in or pulled out of the well either at a constant speed or with intermittent stations. Acoustic signal amplitude is measured either at a station or while running in or pulling out of the well using at least one instrument for objective measurements of the acoustic signal amplitude. Acoustic signal amplitude measurement data obtained in the well is processed, and amplitude peaks in the recorded acoustic signal are detected. At each depth, the peak shape obtained during the measurement is compared with a reference one.

The invention discloses an acute ischemic stroke prediction system and method, and the system comprises a data collection unit, a data processing unit, a model training unit, a detection unit and a prevention unit, and the data collection unit is used for obtaining basic physiological parameters; the data preprocessing unit preprocesses the basic physiological parameters to obtain a training data set, and the model training unit carries out training based on the training data set to generate a cerebral apoplexy prediction model; the detection unit is used for acquiring health data information of a to-be-detected individual, and the prediction unit is used for outputting the probability that the to-be-detected individual suffers from cerebral apoplexy according to the health data information and the cerebral apoplexy prediction model; according to the method, the objective measurement relation is established between the basic physiological parameters and the cerebral apoplexy disease probability, so that the judgment result is quickly output for detecting the physiological parameters of the to-be-detected person, early-stage screening is carried out on high-risk groups of cerebral apoplexy, targeted prevention and care can be conveniently carried out on the high-risk groups, and the incidence rate of cerebral apoplexy is reduced.

The subjective ophthalmological examination device includes a subjective measurement unit and an objective measurement unit. The subjective measurement unit subjectively measures the optical characteristics of the eye to be examined and includes: a light projection optical system that projects a sight mark beam toward the eye to be examined; a corrective optical system that includes a right-eye corrective optical system and a left-eye corrective optical system arranged as a pair of left and right parts and is disposed in an optical path of the light projection optical system to change the optical characteristics of the sight mark beam; an optical component that is shared by the right-eye optical path including the right-eye corrective optical system and the left-eye optical path including the left-eye corrective optical system and that guides the sight mark beam corrected by the corrective optical systems toward the eye to be examined; the objective measurement unit includes a measurement optical system that emits measurement light toward the fundus of the eye to be examined and receives reflected light from the fundus. The objective measurement unit objectively measures the optical characteristics of the eye to be examined via the optical component disposed in the optical path of the measurement optical system.

The invention discloses a scene awareness objective measurement method considering abnormal states, and relates to the field of human-intelligent interaction safety analysis. The method comprises four steps of experiment design and preparation, tested training and pre-experiment, formal data acquisition and monitoring, and data analysis and verification. Eye movement data before and after an abnormal state is collected through an eye movement tracking technology, a second-order transfer entropy index is innovatively introduced, parameters such as pupil variability and gaze entropy are combined, the relevance between eye movement parameters and scene awareness is verified through correlation analysis, and accurate quantitative evaluation of the scene awareness in the abnormal state is achieved. The method breaks through the limitation of a traditional measurement method, can truly reflect the real-time response of an operator to an abnormal state, provides support for the safety design and optimization of a man-machine system in the safety key fields of aviation, nuclear power and the like, and is remarkable in application value.

The method comprises the following steps: washing, unloading and molding, setting a blank control group and a sample group, collecting subjective feeling data, collecting objective measurement data, processing and calculating the data, and outputting an evaluation result, data processing and calculation are carried out according to acquired subjective feeling data and objective measurement data of a blank control group and a sample group; respectively calculating comprehensive evaluation indexes of the blank control group and the sample group according to the following formula; and finally, comparing the calculated comprehensive evaluation index of the sample group with the comprehensive evaluation index of the blank control group to obtain an evaluation result, and outputting the evaluation result.

The invention provides a water turbine synchronous generator set carbon brush detection device and detection method, relates to the technical field of hydroelectric equipment detection, and solves the problem that installation parameters are out of control due to lack of objective measurement data of a carbon brush. The device comprises a data acquisition unit and a data processing display unit which are connected with each other, in the data acquisition unit, an outer shell is configured to be adaptively inserted into a brush holder of a water turbine synchronous generator set carbon brush, an angle sensor measures the relative inclination angle between the outer shell and the surface of a collecting ring, and a pressure sensor measures the pressure applied to the outer surface of the outer shell; in the data processing display unit, a controller receives and processes signals output by the angle sensor and the pressure sensor respectively, and a display module displays an angle measurement value and a pressure measurement value which are processed by the controller respectively. Accurate quantitative detection of the carbon brush installation angle and the spring pressure can be realized, so that field installation and debugging work is guided, and the operation reliability of a generator set is improved.

The invention belongs to the technical field of distance laser measurement, and relates to an agricultural and sideline product slicing circular knife automatic detection device and a use method. The pressing air cylinder is completely unfolded, the pressing spring is driven to press the sliding block connecting plate, the sliding block assembly and the pressing wheel assembly are pushed to horizontally move rightwards, the cutting edge enters the pressing wheel groove, and then the cutting edge abuts against the groove bottom inner edge line of the pressing wheel groove to be in a stable state. The axial laser sensor and the radial laser sensor collect data, the servo motor drives the slicing circular knife to slowly rotate at a constant speed, and meanwhile the collected data are stored. The rotation angle of the servo motor, the axial displacement collected by the axial laser sensor and the radial displacement collected by the radial laser sensor are recorded and stored in a one-to-one correspondence mode. When the rotation angle of the servo motor reaches 360 degrees, the servo motor stops, and the axial laser sensor and the radial laser sensor stop collecting. The device automatically completes measurement, is high in measurement speed and data analysis speed, is objective in measurement result, is stable in measurement data, is small in error, saves manpower, and reduces the labor intensity.

The present invention belongs to the field of distance laser measurement technology, and relates to an automatic detection device for agricultural and sideline product slicing circular knives and a method of use. The clamping cylinder is fully extended, driving the clamping spring to clamp the slider connecting plate, pushing the slider assembly and the pressure wheel assembly to translate to the right, and the blade enters the pressure wheel groove, and then the blade is close to the inner ridge line of the bottom of the pressure wheel groove to become a stable state. The axial laser sensor and the radial laser sensor collect data, and the servo motor drives the slicing circular knife to rotate slowly and uniformly, while saving the collected data. The rotation angle of the servo motor, the axial displacement collected by the axial laser sensor, and the radial displacement collected by the radial laser sensor are recorded and saved one by one. The servo motor stops when the rotation angle reaches 360 degrees, and the axial laser sensor and the radial laser sensor stop collecting. The present invention automatically completes the measurement, has a fast measurement speed, fast data analysis, objective measurement results, stable measurement data, relatively small errors, saves labor, and reduces labor intensity.

An ophthalmic examination apparatus (100) includes a visual target projection system (4) including a visual target presentation portion (41) that presents a fixed visual target to left and right subject eyes (EL, ER), an objective measurement optical system (6, 7) that objectively measures eye characteristics of the left and right subject eyes, and a controller (140) that controls each portion of the apparatus, wherein the fixed visual target is a visual target for the left eye (8L) and a visual target for the right eye (8R) that are to be respectively projected to the left and right subject eyes (EL, ER) and have a same drawing pattern in positions where up and down direction positions to visual target flames (81L, 81R) are the same.

An ophthalmologic apparatus includes a visual target presenting portion that presents fixation targets to subject eyes; an objective measurement optical system that objectively measures eye characteristics of the subject eyes; and a controller. Each of the fixation targets includes fusion targets depicted in a manner that allows binocular fusion while the subject eyes respectively view the fixation targets. The visual target presenting portion presents the fixation targets while changing an examination distance from the subject eyes to the fixation target when an anisometropia is induced. In the anisometropia, one subject eye is in a fully corrected condition and the other subject eye is corrected by a predetermined degree from the fully corrected condition. The controller controls the objective measurement optical system to measure the eye characteristics while the subject eyes binocularly view the fixation targets and acquire refractive values of the subject eyes as objective measurement information.

Presented herein are substantially automated techniques that enable an electro-acoustic or other hearing prosthesis implanted in a recipient to use objective measurements to determine when the recipient is likely experiencing sound perception changes. Once one or more perception changes are detected, the hearing prosthesis may initiate one or more remedial actions to, for example, address the perception changes. As described further below, the one or more remedial actions may include adjustments to the recipient's operational map to reverse the one or more perception changes.

The application discloses an equivalent circuit parameter prediction method and device, equipment and a storage medium, and relates to the technical field of electrochemical analysis. The method comprises the following steps: based on an equivalent circuit parameter prediction model, processing unlabeled real impedance spectrum data to obtain predicted parameters and reconstructed impedance spectrum data determined based on the predicted parameters; based on the reconstructed impedance spectrum data and the unlabeled real impedance spectrum data, training the equivalent circuit parameter prediction model to obtain a target equivalent circuit parameter prediction model; and based on the target equivalent circuit parameter prediction model, predicting to-be-predicted impedance spectrum data to obtain target parameters of an equivalent circuit model corresponding to the to-be-predicted impedance spectrum data. In the foregoing manner, the dependence on real parameter labels is eliminated without any parameter labels, self-supervised training is achieved, the real spectrum of a reproduced objective measurement is taken as a target, and the prediction accuracy and reliability of the model are improved.

An ophthalmic examination apparatus (100) includes a visual target projection system (4) that includes a visual target presentation portion that presents a fixed visual target to left and right subject eyes (EL, ER), an objective measurement optical system (6, 7) that objectively measures eye characteristics of the left and right subject eyes (EL, ER), and a controller (140) that controls each portion of the apparatus, wherein the controller (140) measures the eye characteristics of the left and right subject eyes (EL, ER) with the objective measurement optical system (6, 7) and acquires an objective refraction value as objective measurement information when fusion is attempted with left and right subject eyes (EL, ER) with respect to a change in the convergence distance.