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44 results about "Measurement reproducibility" patented technology

Reproducibility is the variation in average measurements obtained when two or more people measure the same parts or items using the same measuring technique. Reproducibility is the variation in average measurements obtained when two or more people, or systems measure the same parts or items using...

Mark with focusing and slant correction function and aligning method

ActiveCN105467781AEliminate the effects ofAchieve high-precision focusing and levelingPhotomechanical apparatusGratingGranularity
The invention discloses a mark with a focusing and slant correction function and an aligning method. The mark comprises an aligning mark and at least one pair of focusing marks, wherein the center of the aligning mark is positioned on the middle point of a connecting line of any pair of the focusing marks; the focusing marks of any pair are arranged on two sides of the aligning mark in a manner of central symmetry; the aligning mark is a crossed mark or a star-shaped mark; the focusing marks are square type focusing marks or grating type focusing marks; the line width of the aligning mark is greater than discretization granularity; and the line width of the aligning mark is greater than twice of PSF width. The invention also provides the aligning method applied to the mark, and high-precision focusing leveling of the aligning mark is realized. Compared with the prior art, according to the mark provided by the invention, the influence of inclination on the mark is eliminated during focusing, so that the measurement reproducibility is improved; and moreover, the influence mechanism of distortion on the measurement reproducibility is analyzed, limited conditions for mark width are given out, and the measurement reproducibility is further improved.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD

Method for immobilization of metal iridium complexes with silicon nanoparticles being coated on electrode

The invention relates to a method for immobilization of metal iridium complexes with silicon nanoparticles being coated on an electrode, belongs to the electrochemiluminescence detection field, aims to immobilize water-insoluble metal iridium complexes on an electrode surface and achieves direct detection of coreactants. Organic silicon nanoparticles loaded with oil-soluble metal metal iridium complexes di(2-phenychinoline)(acetylacetone) iridium((pq)2Ir(acac)) are prepared by a positive phase microemulsion method. A micro emulsion system is di(2-ethylhexyl) succinic acid ester sodium sulfonate (AOT) / n-butyl alcohol (n-BuOH) / water. A solution of (pq)2Ir(acac) is added in the micro emulsion system. Then organic silicon monomers are added. Finally alkali is added as catalysts and organic silicon nanoparticles loaded with metal metal iridium complexes are synthesized. The scanning electron microscope results show that the synthesized organic silicon nanoparticles are monodisperse and spherical. The fluorescence spectra shows that the fluorescence properties of metal iridium complexes loaded in the organic silicon nanoparticles do not change. The synthesized silicon nanoparticles are dropped and painted on the surface of a glassy carbon electrode, and a solid-phase electrochemiluminescence electrode is prepared. The electrode has high sensitivity and measurement reproducibility to a typical coreactant di(2-butyl) ethanolamine (DBAE).
Owner:JIANGNAN UNIV

Soil volumetric water content measuring method based on one-chip microcomputer

The invention discloses a soil volumetric water content measuring method based on a one-chip microcomputer and belongs to the field of an agricultural measuring technology. The measuring method comprises the following steps: 1, connecting an inductor L1 in series to a capacitor to form an LC circuit; 2, establishing a relation between resonant frequency f0 of the LC circuit and soil volumetric water content theta v; 3, establishing a one-to-one correspondence form of several f0 values and several theta v values; 4, connecting a measuring circuit to the LC circuit; 5, putting soil to be measured between two polar plates of the capacitor; 6, adjusting frequency values of the LC circuit to several resonant frequency f0 values in the step 3, and acquiring and recording a voltage value between the two polar plates of the capacitor under each frequency value so as to obtain several voltage values; and 7, finding the maximum value of the several acquired voltage values, identifying the frequency value of the LC circuit corresponding to the maximum value as the resonant frequency f0 of the LC circuit, and enquiring the form in the step 3 so as to obtain the soil volumetric water content theta v. The measuring method has advantages of high precision, automatic acquisition, good measuring reproducibility and convenience in operation.
Owner:CHANGZHOU UNIV

Test adapter of small-spacing connection terminal

ActiveCN107589279ASolve the problem of not being able to accessImprove test data qualityCoupling device connectionsMeasurement instrument housingElectrical conductorMeasuring instrument
The invention, which belongs to the field of electrical power module testing, relates to a test adapter for a small-spacing connection terminal. The test adapter comprises a main adapter body manufactured by a conductor. The main adapter body is provided with output voltage sampling holes and load connecting holes; a cuboid crimping body is arranged at the front end of the main adapter body. The adapter includes a left negative adapter, a right negative adapter, a right positive adapter, and a left positive adapter, wherein the left negative adapter and the right negative adapter are connectedwith a negative electrode of a direct-current power supply module and the right positive adapter and the left positive adapter are connected with a positive electrode of the direct-current power supply module; a BNC-to-SMA radio-frequency adapter connected with a standard testing line directly is arranged at the left negative adapter or the right negative adapter; and metal planes for convenientcontact and signal collection of a standard probe are arranged at the front parts of the left positive adapter and the right positive adapter. Therefore, problems that one wiring terminal needs to beconnected with a plurality of testing lines and a sampling probe of an oscilloscope can not be connected are solved and thus reliable and rapid access of a measuring instrument becomes convenient; andbecause the sampling point and the measurement method are fixed, the quality of testing data of the measuring system is enhanced. The measurement reproducibility is high.
Owner:PLA NO 63686 CORPS
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