5results about How to "The result error is small" patented technology

The invention relates to the technical field of general image data processing or generation, in particular to a soybean germplasm resource high-throughput measurement method based on image recognition, and the method comprises the steps: obtaining a correction image of a target measurement object; based on the corrected image, pod contour image parameters and grain contour image parameters are extracted, and size correction is carried out on the image; calculating a pod length parameter, a grain length parameter, a pod width parameter and a grain width parameter based on the corrected image; obtaining a pod width change curve based on the pod width parameter; calculating the pod number based on the pod width change curve; extracting colors based on the corrected image to obtain pod color data and grain color data; and verifying a pod length parameter, a grain length parameter, a pod width parameter, a grain width parameter, pod color data and grain color data based on the decision coefficient and the root mean square error. The problems that in the prior art, time and labor are consumed, and precision is low are solved.

The application discloses a kind of welded structure harmonic response structural stress fatigue life prediction method, comprising the following steps: step 1: build the finite element model of welded structure containing weld;Step 2: using unit external load to the finite element model of welded structure harmonic sweep frequency obtains node response displacement;Step 3: according to external load coefficient obtains the unit stiffness matrix and node displacement under external load, as follows: step 4: calculate the simple harmonic response structural stress and equivalent structural stress of structure.The welded structure harmonic response structural stress fatigue life prediction method of the application: (1) compared with traditional quasi-static method, can solve the problem that quasi-static method cannot be carried out vibration fatigue evaluation, (2) compared with frequency domain structural stress method, can solve the problem that frequency domain structural stress method cannot evaluate simple harmonic vibration fatigue, (3) compared with traditional transient structural stress method, the method of the application is more efficient, and the result error is very small.

The invention relates to the technical field of cigarette processing, in particular to a cigarette making machine comprehensive quality evaluation method based on a graph neural network, which comprises the following steps: dividing pre-processed related data into evaluation layers of different indexes based on hierarchical analysis decision, and finding out factors of different levels from the evaluation layers of different indexes; finding out relevance between different level factors and different index evaluation layers from different index evaluation layers based on gray correlation analysis; on the basis of an entropy evaluation method weight solving method, finding out the weights of the correlation factors corresponding to the different index evaluation layers in the corresponding index evaluation layers from the different index evaluation layers and the factors of the different levels; and based on different index evaluation layers, a correlation analysis layer, a weight analysis layer and the defined graph convolutional network layer, combining an attention mechanism, normalization operation and FC regression to construct an optimized cigarette making machine comprehensive quality evaluation graph neural network.

The utility model discloses an automobile tire pattern depth gauge which comprises a holder and a measuring ruler strip which is vertically and movably inserted in the vertical central axis position of the holder, and ear handles are further arranged on the two sides of the holder. A buckle is horizontally and slidably connected to the position, close to the bottom, of the holder, and a clamping groove corresponding to the buckle in position is formed in the side face of the measuring ruler strip. An annular supporting base is horizontally arranged at the bottom of the holder, and the circle center corresponding to the supporting base is located on the vertical axis of the measuring ruler strip. According to the utility model, the bottom of the holder is coaxially provided with the annular supporting base which is located on the same horizontal plane with the bottom of the holder, so that the depth gauge has a three-dimensional structure, the supporting base can vertically support on the tread of a tire at 360 degrees, and the scale marks on the measuring ruler strip can directly face a worker on the side surface of an automobile; not only can the perpendicularity be easily kept, but also the reading is convenient, the result error caused by reading and operation is greatly reduced, and convenience is brought to use.

The invention discloses a cement-based material shrinkage cracking test device, which comprises a base, a strain data acquisition instrument and a computer, the top end of the base is provided with an outer ring and an inner ring, the outer ring and the inner ring are used for manufacturing a test piece, the two sides of the outer part of the inner ring are fixedly connected with ribs, and the ribs are used for providing a cracking track for the test piece. Lifting handles are arranged on the two sides of the top end of the base, telescopic mechanisms, limiting mechanisms and clamping pieces are arranged on the lifting handles, each limiting mechanism comprises a tooth block and a plurality of ratchets, the telescopic mechanisms adjust the positions of the clamping pieces through clamping of the tooth blocks and the ratchets, and the clamping pieces are used for fixing the outer ring. Compared with an eccentric annular constraint test device, the device provided by the invention overcomes the defect of non-uniformity of the eccentric annular constraint test device, has geometric height symmetry, and overcomes the defect of offset of a crack cracking position caused by non-uniform distribution of stress at different angles of an eccentric ring; and the restraining uniformity of the circular ring on the mortar or concrete under the same radial thickness is ensured.