30results about How to "Objective measurement" patented technology

The invention provides a measuring method of technical parameters of delay-type audio devices of an electrophone. In the method, the characteristics of a digital oscilloscope are utilized to measure parameters of total delay generated by various types of low-frequency wave audio devices generated by utilizing an actuating signal source and the waves generated by the actuating signal source, and to determine the technical parameters of scanning depth, scanning speed and the like. The invention can be used for objectively measuring the values of the technical parameters, breaks through methodswhich only can carry out subjective judgment in the field, provides a corresponding standard and has simple operation, rapidness and accuracy.

Provided is a comprehensive message and flow two-dimensional network active node measuring method. The method includes the steps that a network flow sampling rate and a message sampling rate are set, when a message reaches a measurement device, flow information is extracted from a message header, then, network flow sampling and message sampling are performed, state information of the network flow is maintained through a bit vector B, network flow number compensation is carried out for Hash conflict existing in the bit vector B, the network flow number and the message number of sampled IPs are stored through a Hash linked list structure. After the measurement period is ended, whether the IPs are active nodes or not is judged by calculating the statistics information of each IP address. Due to the method, two different active nodes based on the message and the network flow can be measured at the same time. According to the method, the network flow and the message are respectively sampled for data flow, and the method can be applied to network active node measurement in a high-speed network environment.

The invention discloses a video time delay detection method. The method comprises following steps of obtaining current first real time information of a local end image collection device and a first image displayed by a local end video display device at the same time, wherein the first image is the image containing the second real time information corresponding to the first image collected by the local end image collection device; and determining time delay information according to the first real time information and second real time information. The invention also discloses a video time delay detection device.

The invention provides a particle dynamic response test device and method based on electromagnetic control, which can realize a particle column natural collapse test without interference and obtain accurate and real test data. The particle kinetic response test device includes: a plurality of particle units, each of which includes: an embedding body capable of generating magnetism under the action of electromagnetic force, and an inclusion body sealed and wrapped outside the embedding body; a particle flow cell with a One side of the tank body is used as the adsorption side, and the other side is transparent as the observation side; the baffle member is matched with the particle flow tank, and together with the particle flow tank, it forms a multiple particle unit. The space for arrangement and stacking; and the electromagnetic chuck, which is arranged on the adsorption side of the particle flow cell, generates electromagnetic force to adsorb the particle unit on the adsorption side of the particle flow cell to form a stable particle column, and turns off the electromagnetic force to make the particle column collapse freely.

The present invention provides a strabismus degree measuring apparatus. It is formed from table frame, coordinate machine, head frame, contact lenses, parallel light emitting device and far and near 9 eye position objective stare systems. Besides, said invention also provides its strabismus degree measuring method and concrete steps by using said apparatus.

The present invention provides a method of assessing whether a subject mammal has a condition of interest, the method comprising using the abundance of a first set of biomarkers and the abundance of a second set of biomarkers for assessing whether said subject mammal has said condition of interest Functional formulation of abundance. Also provided are computer-aided systems for assessing whether a subject mammal has a condition of interest and computer readable media for assessing whether a mammal has a condition of interest.

The invention belongs to the technical field of environmental biosafety detection and relates to a method for accurately measuring seed holding of rice plant seeds. The method comprises establishing a method for accurately measuring the average pulling force needed by the rice plant seed falling off and building a mathematical model for converting the measured pulling force into a seed holding index and concretely comprises accurately measuring pulling forces needed by the rice plant seed falling off through a digital display tension meter, calculating the average pulling force needed by falling-off of all detected seeds, and converting the average value into a seed holding index SHI according to a mathematical model, wherein seed holding is increased along with increasing of SHI and is decreased along with decreasing of SHI. The method can accurately and objectively measure seed holding degrees of different rice plants, provides a technical support for accurate screening of rice varieties with different seed holding degrees in scientific research and breeding and provides an effective detection method for seed mediated transgenosis diffusion analysis of rice wild sibling species subjected to transgenosis drifting.

An encoding / decoding apparatus and method for an orientation interpolator node are provided. The encoding / decoding apparatus for an orientation interpolator node, which provides rotational information of an object in a 3-dimensional space, is formed of "key information" which indicates a time when a rotational movement occurs and "key value information" which indicates a rotational posture corresponding to the time. A predictive coding apparatus is used in the encoding process for compressing the information of the key and key value information. Therefore, in encoding an input orientation interpolator node in an information compression method of a predictive encoding method, the efficiency of encoding is improved and an reverse rotation due to an encoding error from lossy coding can be corrected.

The invention relates to a method used for measuring the area and the shape of a forest gap in the field of forestry and ecology which includes the steps of: using a digital camera with a fish-eye lens to vertically upwards shoot a semi-spherical image at a certain position in the forest gap; measuring the parameters of the forest gap; processing the semi-spherical image and recording the coordinate of the highest point of the edge wood of the forest gap in the image; calculating the area and the shape of the forest gap according to the projection 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 shape of the forest gap and fills in the blank in the researching field. The method can be adopted to fast measure the area and the shape of the forest gap, thus avoiding the effect of anthropic factors in the existing method and improving the estimation precision of the area of the forest gap; the method is easily operated and the measuring result is not affected by the measuring position.

The invention discloses a neurology department pupil light reflex diagnostic device and a use method thereof, and belongs to the field of neurology department diagnostic apparatuses. The neurology department pupil light reflex diagnostic device includes a head placement window and a pupil inspection mechanism, where the radian radiuses of the head placement window and the pupil inspection mechanism are consistent, and are parallel to each other; a stimulation light source is fixed on a head end of a rotation rod; the rotation rod can rotataly move on a semicircular sliding rail; an infrared distance measurement instrument is rotatably hanged on a free end of the rotation rod; a reflective band attaches to a bottom of a supporting sliding seat; a bearing plate is fixed under a fixing plate;the center of a lower surface of the bearing plate is fixed on a piston rod of a hydraulic cylinder; and image acquisition devices are fixed on two sides of an inner surface of the supporting slidingseat. The neurology department pupil light reflex diagnostic device can achieve electric control automation, can greatly reduce the working load of medical workers, can achieve precise pupil inspection, and can ensure the accuracy of the diagnosis result; the stimulation light source is excellent in adjustability and controllability, can monitor conditions of the two pupils at the same time, is reasonable in the optimized structural design, and has positive impact on a pupil light reflex test.

The invention relates to a laboratory playback device and method of an actual noise field. The front end of the laboratory playback device is respectively connected with a computer and a horn; a computer sends noise through the horn or the noise is acquired and then sent to a processing component in the computer for carrying out calibration, test and the like. The laboratory playback device and method solve the defects that noise is not definite in directivity and enough in scattering property, is static and insufficient in coverage surface and the like in the past. According to the invention, noise playback can effectively cover the actual noise field of a communication terminal using environment from a point noise source with definite directivity to nondirectional scattering noise, thereby providing a noise environment with effective, objective and accurate communication terminal denoising performance measurement, ensuring that playback of the laboratory noise field is accurately consistent with that of the actual noise filed, accurately measuring the denoising performance of the communication terminal and ensuring accurate, effective and objective results.

The invention relates to a clinical measurement method for a skull defect area scalp superficial area, and belongs to the technical field of medical measurement. The clinical measurement method for the skull defect area scalp superficial area comprises the specific steps that 1, an ultraviolet light irretrievable color inelastic ultra-thin soft material with grids covers the skull defect area scalp surface of an object needing detecting, and the edge of a skull defect area is described; 2, an ultraviolet radiator with the irradiation strength of 80 mu w / cm<2> is used for irradiating the position 1.0 m away from the skull defect area scalp surface for 20 seconds; 3, the number of the allochroic grids is counted and the skull defect area scalp superficial area is computed according to a conventional method. The devices used in the method are purchased on the market. The clinical measurement method for the skull defect area scalp superficial area has the advantages of being low in cost, convenient to operate, and capable of accurately, objectively and rapidly carrying out clinical measurement on the skull defect area scalp superficial area.