34099results about How to "High measurement accuracy" patented technology

A measuring instrument that includes a tube 21 having a female thread 211 and a spindle 3 having a lead screw 31 screwing with the female thread 211 and capable of being advanced and retracted in an axial direction along with rotation around the axial center, and measures dimensions etc. of a workpiece according to displacement in an axial direction of the spindle 3 based on a rotation amount of the spindle 3. According to this measuring instrument, a pitch P of the lead screw 31 is twice as large or more than the difference between an external diameter R and a core diameter r thereof, and the difference between the external diameter R and the core diameter r is one-fifth or less of the external diameter R. Because of the lead screw 31 with the large pitch, the spindle 3 can be moved at high speed, thus enhancing operational performance of the measuring instrument.

Multiple location finding equipment (LFE) inputs are used to enhance location information made available to wireless location-based applications. A wireless network utilizes a mobile switching center to route communications between wireless stations, a network platform, and a variety of LFE systems. A Location Finding System (LFS), resident on the network platform, receives location information from the LFEs and provides location information to wireless location based applications. In this regard, the LFS can receive input information at varying time intervals of varying accuracies and in various formats, and can provide standardized outputs to the applications, for example, depending on the needs of the applications. Multiple inputs may also be co-processed for enhanced accuracy. A specification can be used to ensure that location information at least meets certain minimum criteria, such as geographical accuracy, allowable age, acceptable response time, and confidence.

Methods and systems for performing simultaneous optical scattering and small angle x-ray scattering (SAXS) measurements over a desired inspection area of a specimen are presented. SAXS measurements combined with optical scatterometry measurements enables a high throughput metrology tool with increased measurement capabilities. The high energy nature of x-ray radiation penetrates optically opaque thin films, buried structures, high aspect ratio structures, and devices including many thin film layers. SAXS and optical scatterometry measurements of a particular location of a planar specimen are performed at a number of different out of plane orientations. This increases measurement sensitivity, reduces correlations among parameters, and improves measurement accuracy. In addition, specimen parameter values are resolved with greater accuracy by fitting data sets derived from both SAXS and optical scatterometry measurements based on models that share at least one geometric parameter. The fitting can be performed sequentially or in parallel.

An automatic analyzer using a reaction vessels of disposable type is provided which is compact in construction and with high accuracy of measurement.The analyzer is comprised with a reaction container which is capable of having a plurality of cuvettes of disposable type set therein, an extracting and injecting unit for injecting a first reagent, a specimen and a second reagent into a disposable cuvette, a light measuring unit for emitting light to the cuvette, and for measuring absorbance thereof and a CPU for producing a calculated value based on outputs of the light measuring unit.The light measuring unit measures absorbance of the first reagent, specimen and second reagent injected into and reacted with each other in a disposable cuvette, and also measures an air blank value representing absorbance of an empty disposable cuvette and a first reagent blank value representing absorbance of a disposable cuvette having first reagent in the cuvette (S104, S106). The CPU compensates the absorbance based on at least one of the air blank value and the first reagent blank value (S112, S113).

Sensor arrangement having row and column lines arranged in first and second directions, respectively, sensor arrays arranged in crossover regions of the row and column lines, a detector, and a decoding device. The sensor arrays have a coupling device for electrically coupling respective row and column lines, and a sensor element to influence electric current flow through the coupling device. The detector is electrically coupled to a respective end section of at least a portion of the row and column lines, and detects a respective accumulative current flow from the individual electrical current flows provided by the sensor arrays of the respective lines. The decoding device is coupled to the row and column lines, and evaluates at least a portion of the accumulative electric current flows fed to the decoding device via the row and column lines to determine at which of the sensor elements a sensor signal is present.

A method and system for non-invasive measurements in a patient's body in which several measurement sessions are performed on a measurement location. Each measurement session includes applying an external electromagnetic field to the measurement location, detecting at least two responses of the measurement location, and generating data indicative of the detected response. These responses are characterized by at least two different values of a controllable parameter. The measurement sessions include at least two measurement sessions carried out at a normal blood flow in the measurement location and at least two measurement sessions carried out at a condition of artificial kinetics in the measurement location. The first and second measured data are processed to determine a first relation between the first time variations and a second relation between the second time variations for the different parameter. that can be used to determine the at least one blood related parameter.

Novel bipyridyl-osmium complex conjugates and their use in electrochemical assays are described. The redox reversible-osmium complexes can be prepared to exhibit unique reversible redox potentials and can thus be used in combination with other electroactive redox reversible species having redox potentials differing by at least 50 millivolts in electrochemical assays designed for use of multiple electroactive species in the same cell and in the same sample without interference between the two or more redox coupled conjugate systems.

The invention discloses a cucumber picking robot system in a greenhouse environment. The robot system comprises a binocular stereo vision system, a mechanical arm device and a robot mobile platform; the binocular stereo vision system is used for acquiring cucumber images, processing the images in real time and acquiring the position information of the acquired targets; the mechanical arm device is used for capturing and separating the acquired targets according to the position information of the acquired targets; and the robot mobile platform is used for independently moving in the greenhouse environment; wherein, the binocular stereo vision system comprises two black and white cameras, a dual-channel vision real-time processor, a lighting device and an optical filtering device; the mechanical arm device comprises an actuator, a motion control card and a joint actuator; and the robot mobile platform comprises a running mechanism, a motor actuator, a tripod head camera, a processor and a motion controller. The invention also discloses a cucumber picking method in the greenhouse environment. The method of combining machine vision and agricultural machinery is adopted to construct the cucumber picking robot system which is suitable for the greenhouse environment, thus realizing automatic robot navigation and automatic cucumber reaping, and reducing the human labor intensity.

The invention discloses a method of 3D contour measurement of a workpiece on a conveyor belt based on line laser scanning. The method comprises the following steps of obtaining camera internal and external parameters through camera calibration, carrying out filtering and laser light strip center position initial extraction through an image preprocessing step, carrying out sub-pixel precision refinement on the center coordinates of a light bar, obtaining a light plane equation through the laser light plane calibration and finally carrying out reconstruction and measurement of the three-dimensional contour information of a workpiece to be measured. The workpiece 3D contour measurement brought forward by the invention has the following advantages: a high measurement precision which means thethree-dimensional contour information of the workpiece to be measured can be accurately obtained through the laser light bar extraction with sub-pixel precision and 3D reconstruction; a fast measurement speed which means real-time measurement of 3D contour information of the workpiece to be tested can be realized to improve the efficiency of industrial production site operations; and low hardwarecosts which is realized in a hardware implementation mode in which laser is combined with a monocular camera. Accordingly, the technical method of the application has advantages such as being in a non-contact mode, high in measurement precision, fast in speed and low in cost, and can be applied to an industrial automation production process to realize accurate measurement of the 3D contour information of the workpiece on the conveyor belt.

Three-dimensional parameters of a tire are measured dynamically in a non-contact way using laser vision technology. Two laser vision sensors are used, which are calibrated and then used for practical measurement. The system offers a wide measuring range, high accuracy and high efficiency, even though the tire is moving, and it minimizes the size of the measuring apparatus, and reduces the cost of the apparatus.

Test element analysis system for the analytical investigation of a sample, in particular of a body liquid of human beings or animals, comprising test elements (2) with a carrier film (5) and a test field (7) fixed to the flat side (6) of the carrier film (5), the test field (7) containing a reagent system the reaction of which with the sample (21) leads to an optically measurable change in the detection zone (24) which is characteristic for the analysis, and an evaluation instrument with a measuring device for measuring the optically measurable change. In order to obtain a very high measuring accuracy and an easy handling at the same time, the carrier film (5) of the test element (2) comprises a light guide layer (26), the detection zone (24) of the test field (7) is in optical contact to the light guide layer (26) in a coupling out zone (33), enabling the coupling out of light from the light guide layer (26) to the detection zone (24), the primary light (29) of the light emitter (16) is coupled into the entry surface (31) in the light guide layer (26) in such a manner that a light guide section (32) of the light path of the primary light (29) runs between the entry surface and the detection zone (24) inside the carrier film (5), and the secondary light is reflected from the detection zone (24) into the light guide layer (26) in such a manner that a light guide section (34) of the light path of the secondary light runs between the detection zone (24) and the detector (17) inside the light guide layer (26).

A biosensor for analyzing specific components in an introduced liquid sample by reaction of the liquid sample with a reagent comprises a cavity into which the liquid sample is introduced, an air hole communicating from the cavity to outside, and a water repellent part having a water repellency at 43 mN / m or less in surface free energy and provided to at least a portion around the outlet of the air hole. By the water repellent part around the air hole, the liquid sample can be prevented from flowing out through the air hole, thereby achieving a high-accuracy measurement.

A method of measuring an analyte, comprising a step of measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein a layered inorganic compound is caused to exist in the reaction system including the formation reaction of the detectable substance, whereby high-sensitivity measurement is made possible, the detectable substance can be stabilized to improve accuracy of the measurement, a rate of a chemical reaction is increased to enable quick measurement, and high-sensitivity measurement is made possible even in a reaction system which forms an insoluble substance. Also, it can be provided an analytical testing piece for measuring an analyte, by measuring a detectable substance by using a reaction system including a formation reaction of the detectable substance based on a chemical reaction of the analyte contained in a sample, wherein the testing piece comprises at least one test portion having a detection portion for detecting the detectable substance and contains a layered inorganic compound at least in the test portion, whereby diffusion and elution of a dyestuff or the like is prevented, more sensitive and accurate simple analysis is made possible, and easy handling is possible.