Abstract:
Radiation scattering is one of the main contributors to the uncertainty of near infrared (NIR) measurements. Enhanced absorption-measurement accuracy for NIR sensors is achieved by using a combination of NIR spectroscopy and time-of-flight techniques to select photons that are the result of a given mean free path within a moving sample target. By measuring absorption as a function of path length or by windowing signals that are attributable to excessive scattering of NIR radiation within the sample, this technique affords the calculation of more accurate and more universal calibrations. The NIR sensor employs short or ultra-short laser pulses to create NIR that is directed to the moving sample and emerging radiation is detected over time. Windowing effectively truncates non-contributing measurements.
Abstract:
Die Erfindung betrifft ein Testverfahren zur Untersuchung einer Körperflüssigkeit bei dem ein Testband (14) in einem Testgerät (10) eingesetzt wird, um auf dem Testband (14) bevorratete analytische Testfelder (32) sukzessive bereitzustellen, wobei das jeweils bereitgestellte Testfeld (32) durch einen Benutzer mit der Körperflüssigkeit (52) beaufschlagt wird und mittels einer geräteseitigen Messeinheit (18) unter Erfassung von Messsignalen photometrisch abgetastet wird. Um die Messsicherheit zu erhöhen, wird vorgeschlagen, dass ein Kontrollwert aus einer zeitlichen Änderung der Messsignale ermittelt wird, und dass die Messsignale nach Maßgabe des Kontrollwerts als gültig verarbeitet oder als fehlerhaft verworfen werden.
Abstract:
The invention relates to a method for controlling or adjusting optical measuring devices comprising an optical probe and having light reflection measuring means, particularly for controlling or adjusting optical instruments used in the meat industry for determination of meat quality, such as meat colour, and/or meat classification, by introducing the probe into carcasses or cuts thereof, comprising the steps of inserting the probe into a reference medium of known light-reflective power, and controlling or adjusting the setting of the measuring device, which is characterized in that a monodisperse polymer latex is used as reference medium, preferably a polystyrene latex. This medium has an extinction which is easy to reproduce, it has a long life-time and the light-reflection value measured in the medium is practically independent of the temperature of the medium. The invention further pertains to the polymer latex reference medium and a corresponding measurement system.
Abstract:
@ A calibration standard (C), which is normally attached to an infra-red absorption gauge (H) for the purpose of calibrating the gauge, includes spectrally selective absorption means (E, U, A) having a spectrum closely resembling that of a substance to be measured. The standard also includes diffusing means (U) and a reflective plane (B) for returning infra-red radiation, which has passed through the absorption means (E, U, A), to the absorption gauge (H) substantially along the same path as would normally be followed by the radiation reflected from the sample in the absence of the standard. The spectrally selective absorption means (E, U, A) is preferably made of inherently anhydrous material, such as glass containing a rare earth substance, or polypropylene, both of which are stable. According to one arrangement, the standard comprises a housing with a window (W) at one end, a plurality of diffusing elements (U) attached to a central portion of the window and a reflective plane (D) spaced from the diffusing elements. The window and/or the diffusing elements and/or the reflective plane may comprise or include the spectrally selective absorption means.
Abstract:
화학적매개변수의값을결정하기위한장치와방법이제공될수 있다. 하나이상의발광기는광을하우징의구멍을통해서방출하도록하우징내부에위치될수 있다. 방출된광은하우징으로부터분리될수 있는구조물의색상영역, 예컨대테스트스트립, 인쇄된색상기준등을조명할수 있다. 컬러센서는반사광을포획하며반사광을색상영역의색조를결정하는데사용될수 있는초기디지털색 공간으로변환시키도록하우징내부에위치될수 있다. 반사광은예를들어, 적어도색상영역의치수(예를들어, 미리결정된크기, 형상등)와무관하게포획될수 있다.
Abstract:
The present invention relates to a reference data generating method for inspecting a substrate. The reference data generating method for inspecting a substrate includes: acquiring image information with respect to a bare substrate by scanning the bare substrate; generating a compensation matrix by using pad coordinate information extracted from the image information and pad coordinate information of stored design information; and generating reference data including coordinate information of a characteristic object by applying the compensation matrix to the image information. According to the above method, work efficiency may be maximized by rapidly generating reference data without generating cad information necessary for inspecting the substrate.