3results about How to "Short exposure time" patented technology

The application discloses a kind of capturing device and capturing method of transparent board defect shadow image, capturing device is installed in the conveying system for transparent board, capturing device includes: acquisition device, point light source system, curtain, controller;Point light source system and curtain are provided with transparent board to be obtained shadow image between, point light source system and acquisition device are located in the same side of the transparent board to be obtained shadow image, acquisition device is connected with the controller communication;Acquisition device includes multiple area array camera, the field of view of all area array camera covers the width of the transparent board to be obtained shadow image, controller is used to control the exposure timing of acquisition device according to the parameter information of transparent board, and any adjacent area array camera is not exposed simultaneously.The method provided by the application controls the timing of exposure through program, ensures that any two adjacent cameras are at least spaced apart the exposure time required by camera to take a photo to obtain clear defect shadow image.

The invention discloses an image detection method and device for cigarette product end face quality defects, and relates to the technical field of cigarette production quality detection. The device comprises a detection drum wheel, an inner side detection assembly, an outer side detection assembly and an image processing unit, the inner side detection assembly and the outer side detection assembly are respectively fixed through mounting arms, a camera is aligned to the axial direction of a cigarette along the axis of a lens, and the surface of the lens is parallel to the end face of the cigarette. According to the detection method, through drum wheel synchronous pulse positioning, when a cigarette reaches a set phase, inner and outer side LED light supplement and camera photographing are triggered respectively, after an end face image is obtained, shape defects are recognized through contour comparison, and material defects are recognized through traditional material feature recognition or CNN model reasoning. The problems that traditional cigarette end face detection is narrow in coverage and low in precision are solved, comprehensive and high-precision detection of multiple types of defects of the two end faces of the cigarette is achieved, the method is suitable for cigarette making machines of different specifications, and the quality control requirement of modern cigarette production is met.

The invention discloses an automatic feeding device for polycrystalline alumina fiber spinning colloid preparation, and relates to the technical field of chemical material addition, material addition is carried out by adopting a mode of storing materials in a first hopper and feeding the materials in a second hopper, and the materials are divided into a plurality of feeding batches; the weight change before and after the first hopper outputs the materials and the weight change before and after the second hopper inputs the materials and before and after the materials are output are recorded each time before the last time, the total material adding error obtained before the last time of feeding is obtained from the weight change, and the total amount of the materials needing to be added and the weight of the added materials are combined. According to the automatic feeding device, automatic feeding can be achieved through the discharging switch and the discharging device, errors caused by manual operation are reduced, the exposure time of raw materials is short, and dust exposure and environmental pollution are reduced; through repeated weighing and error feedback control, the raw material adding weight can be more accurately controlled, and the error range is reduced to the maximum extent.