4results about How to "Reliable discrimination" patented technology

The invention discloses a method for judging weak vital signs based on an infrared geminate transistor illumination technology, and relates to the technical field of vital sign detection, the method is applied to a detection device which can be worn on a remains finger without heart rate and body temperature and without touching vital signs, and the weak vital signs are judged on the basis of an optical signal after interaction of infrared light and finger biological tissue. The method realizes discrimination of weak vital signs and automatically triggers alarm when weak life states such as false death are identified, and comprises the following steps: collecting and decomposing a mixed optical signal to obtain direct current and alternating current components; screening a preliminary effective signal segment based on the time domain stability of the alternating-current component signal, and calculating a microcirculation physiological coupling coefficient of the preliminary effective signal segment to discriminate a target signal segment; calculating a normalized cross-correlation function peak value of the alternating-current component signals in the target signal segment as cross-correlation peak value intensity, and calculating a steady-state volume index according to the average value of the direct-current component signals; and when the cross-correlation peak intensity and the steady-state volume index both meet a preset threshold condition, determining that weak vital signs exist.

This invention provides a reliable paper type identification device, a paper type identification method, and a recording medium for identifying recycled paper. The paper type identification device (2) comprises: a first light source unit that illuminates the paper with light having a first wavelength and light having a second wavelength; a detection unit that detects the light from the paper and acquires a detection value based on the light; and a control unit that uses the detection value to derive a determination result of the paper type. The first light source unit and the detection unit are located on the same side relative to the paper. The detection value includes: a first detection value based on the light from the paper when the paper is illuminated with light having the first wavelength; and a second detection value based on the light from the paper when the paper is illuminated with light having the second wavelength. The control unit identifies a first type of recycled paper using a first processing step with the first detection value, and identifies a second type of recycled paper different from the first type using a second processing step with the second detection value.

The application discloses a steel-cored aluminum stranded conductor broken strand defect identification method and device based on eddy current detection, relates to the technical field of steel-cored aluminum stranded conductor broken strand defect identification, and comprises the following steps: installing an annular vector coil array probe composed of a plurality of excitation coils on a steel-cored aluminum stranded conductor to be measured, constructing a vectorized excitation magnetic field on the surface of the steel-cored aluminum stranded conductor by controlling the driving parameters of the excitation coils; based on the vectorized excitation magnetic field, a multi-layer selective penetration strategy is constructed, and a set of excitation modes for detecting surface aluminum strands, inner layer aluminum strands and the surrounding area of the steel core is sequentially generated; eddy current signals are collected under each excitation mode and layered feature extraction is performed to form corresponding hierarchical feature vectors; fusion discrimination is performed based on the hierarchical feature vectors to generate an identification result of the broken strand defect of the steel-cored aluminum stranded conductor; and the application solves the problems of excitation magnetic field distortion, signal aliasing and insufficient recognition sensitivity of deep defects in the traditional eddy current detection in a multi-layer stranded structure.

The invention discloses a parent material source correction and discrimination method, which comprises the following steps: collecting reservoir extracts of target shale, obtaining saturated hydrocarbon data of a target layer section, and determining a numerical value of a parent material source index of a target divided layer section according to the saturated hydrocarbon data; dividing correction coefficients according to parent material sources to correct index values corresponding to the target layer sections; and determining the parent material source of the target layer section according to the corrected index characteristic value. According to the method, the shale parent material sources are divided by correcting the abnormal data and utilizing the value combination of saturated hydrocarbons C27, C28 and C29, and technical support can be provided for shale exploration.