31results about How to "Clear and intuitive understanding" patented technology

The invention belongs to the technical field of industrial detection, and discloses a board defect area extraction method and device, and the method comprises the steps of obtaining a to-be-detected board image, and carrying out the segmentation of the image, and obtaining a plurality of detection units; obtaining gray threshold values in one-to-one correspondence with the multiple detection units; and calculating a gray average value of the detection unit, comparing the gray average value with a corresponding gray threshold value, and judging whether the detection unit contains defects or not. According to the invention, the to-be-detected board image is divided into the plurality of detection units, whether each detection unit contains defects or not is judged, the accuracy of the judgment result is improved, meanwhile, all the detection units containing the defects jointly form the defect area on the board; when the defects are further identified subsequently, only the detection units containing the defects are analyzed, so that the amount of data needing to be processed is greatly reduced, and the time required for detecting the defects of the board is shortened.

The present invention discloses an automatically cleanable architectural model display stand, comprising a base, an exhibition stand is rotatably arranged in the center of the end surface on the upper end surface of the base, a display device is provided on the upper end surface of the exhibition stand, and the display device includes a fixed device The glass cover on the upper end surface of the booth, the upper end surface of the booth is provided with a water tank with an upward opening, the outer surface of the booth is provided with an external dust removal device, and the water tank is provided with an internal cleaning device. The lighting conditions at the location can display more information for the situation of the building, so that people can understand it more clearly and intuitively. The booth can be rotated manually to facilitate observation from various angles. At the same time, it can automatically remove dust inside and outside when not in use, making the booth and The internal architectural model is clean and new, giving people a better look and feel.

The invention belongs to the technical field of industrial inspection, and discloses a method and a device for extracting a defect area on a board surface. The method for extracting a defect area on a board surface includes: acquiring and dividing an image of the board surface to be detected to obtain a plurality of detection units; Grayscale thresholds corresponding to multiple detection units one-to-one; calculate the grayscale mean of the detection units and compare them with the corresponding grayscale thresholds to determine whether the detection units contain defects. The invention divides the image of the board surface to be detected into a plurality of detection units, and judges whether each detection unit contains a defect, thereby improving the accuracy of the judgment result. When the defect is further identified, only the detection unit containing the defect can be analyzed, which greatly reduces the amount of data that needs to be processed, thereby reducing the time required for defect detection on the board surface.

The embodiment of the present invention discloses a method and system for generating a graphical description of a mobile application version update, wherein the method includes: clustering the classes of the mobile application version update before and after the modification, and obtaining the clustering result; according to the clustering As a result, the user interface corresponding to the mobile application is modified; and a graphical description of the updated description is generated according to the modified user interface. In the embodiment of the present invention, by generating a graphical update description, the user interface corresponding to the software update can be displayed for the user, which can help the user understand the software changes more clearly and intuitively, provide better services for the user, and significantly improve the user experience .

The invention discloses a tensile membrane structure teaching model, comprising a working platform (3), a supporting structure (2) and at least one layer of membrane surface (1), wherein the supporting structure (2) is fixed on the working platform (3); and the membrane surface (1) is fixed on the supporting structure (2). A first hole (31) penetrating the upper and lower parts is formed in the center of the working platform (3). The supporting structure (2) comprises a first supporting rod (21) and at least three second supporting rods (22). The teaching model is low in manufacturing cost and simple in manufacturing, and a student can independently complete all operation, so the teaching model is favorable for teaching popularization.

A physical and chemical experiment lesson preparation system applied to a network classroom of the present invention includes a lesson preparation platform and a processor, the lesson preparation platform includes a recording unit and a table body, the recording unit includes a positioning video and audio acquisition module and a dynamic audio and video acquisition module, the The audio-visual information obtained by the recording unit is sent to the processor for sorting and storage; the table top is rectangular, the short side of the table is provided with slide rails, and the long side of the table is provided with chute, two The positioning audio-visual acquisition modules are respectively arranged on the slide rails of the two short sides of the table top, and the two dynamic audio-visual acquisition modules are respectively arranged in the chute of the two long sides of the table top; the middle part of the table top is provided with a movable booth for Auxiliary experiments provide a professional lesson preparation platform for teachers to conduct experiments, and obtain all-round audio and video through the recording unit, so that students can understand the experimental process more clearly and intuitively, and help students understand the teaching content.

The invention discloses a frog specimen storage device. The frog specimen storage device comprises an exhibition mechanism and a specimen storage mechanism. The exhibition mechanism comprises a base,a rotary shaft, a shaft sleeve bearing and a transparent exhibition tank. The lower end of the rotary shaft is fixedly connected with an upper board of the base. The upper end of the rotary shaft is fixedly connected with the inner ring of the shaft sleeve bearing. The outer ring of the shaft sleeve bearing is fixedly connected with a lower board at the bottom of the transparent exhibition tank. The transparent exhibition tank rotates with the rotary shaft as the axis. The specimen storage mechanism comprises a tadpole specimen storage tube, an adult frog specimen storage bottle and an adult frog skeleton specimen storage bottle. The tadpole specimen storage tube, the adult frog specimen storage bottle and the adult frog skeleton specimen storage bottle are arranged in the transparent exhibition tank. The adult frog specimen storage bottle is arranged over the adult frog skeleton specimen storage bottle. According to the frog specimen storage device, the forms of frogs in different growth stages can be compared and observed, the trouble that a frog specimen has to be taken and rotated when observed at all angles in the circumferential direction is avoided, and people can observe the forms of the frog at different growth stages conveniently.

An embodiment of the invention discloses an object display device which comprises a shell and a display unit. The shell is provided with multiple side faces and one back, and the side faces and the back form the interior of the shell to have objects placed; the display unit is opposite to the back and is sleeved with the shell, the display unit comprises a first display area and a second display area, wherein the first display area is of a transparent display area, and the second display area is of an image display area; a backlight unit is further arranged on the second display area on the side facing back, and the backlight provides light sources to the second display area.

The invention relates to a generating method of an association picture of a power grid dispatching operation order, and belongs to the technical field of a power system. The method includes steps of firstly, performing topological search on a related device to be operated according to an operation task, generating operation order tidal current charts of a factory station and a device that the operation task involve in; at last, adjusting the positions of the device and the factory station in operation, dynamically laying out and forming the association picture involved by the operation order. After generating the association picture, a dispatcher shall clearly and directly learn about the device to be operated, and provide a powerful technical support and decision-making bias for the power grid dispatching command operation.