Abstract: A method detects mechanical equipment parts. The method includes: obtaining an image of a part; extracting a feature from the image using a machine learning model, identifying a type of surface defect on the basis of the feature to obtain an identification result; and determining whether to replace the part on the basis of the identification result and a predetermined standard of the part. The method reduces the difficulty of detecting a part, can accurately identify a surface defect of the part and determine whether the part needs to be replaced, thereby improving the work efficiency, and shortens the time for mechanical equipment to stop operating for maintenance, thus improving the operating efficiency of the mechanical equipment. The method is automatically executed by a computer, thereby avoiding manually checking errors, improving the accuracy of detection results, and thus improving the reliability of operation of the mechanical equipment.

Abstract: A robot and a collecting method for collecting polymetallic nodules in deep-sea are provided. The robot includes an underwater moving carrier and a collecting module, and the collecting module is fixedly mounted on the underwater moving carrier. The collecting module includes a collecting frame, a collecting pump, a rack and a collecting tube, the collecting frame is installed at the bottom of the rack, and the collecting pump is a piston pump, which includes a piston and a cylinder with open lower-end. The upper part of the cylinder is a collecting area, the lower part is a piston stroke area, the collecting tube is connected to the cylinder of the collecting area, and a check valve is arranged in the middle of the piston.

Abstract: A robot and a collecting method for collecting polymetallic nodules in deep-sea are provided. The robot includes an underwater moving carrier and a collecting module, and the collecting module is fixedly mounted on the underwater moving carrier. The collecting module includes a collecting frame, a collecting pump, a rack and a collecting tube, the collecting frame is installed at the bottom of the rack, and the collecting pump is a piston pump, which includes a piston and a cylinder with open lower-end. The upper part of the cylinder is a collecting area, the lower part is a piston stroke area, the collecting tube is connected to the cylinder of the collecting area, and a check valve is arranged in the middle of the piston. The disclosure realizes the non-destructive collection of deep-sea polymetallic nodules and has high efficiency.

Abstract: The invention provides a packaging container for plate shaped articles and a packaging method using the same. The packaging container comprises a container sole plate, a container lid plate and container side plates. Each of them is provided with detachable assembling parts which allow the container sole plate, the container lid plate and container side plates to be detachably assembled to form the packaging container. The arrangement of detachable assembling parts on the container sole, the container lid and the container side plates may realize the detachable assembly among them. That is, any side of the cubic packaging container can be separately detached during the packaging operation, such that it is possible to more easily and promptly package or obtain the plate shaped articles, while the plate shaped articles are hardly to be damaged when being packaged, thereby fulfilling the demand on automatic packaging for plate shaped articles.

Abstract: A dispelling pen including a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case. The accommodation cavity is connected with the pen head via a pipeline. A switch control valve is disposed on the pipeline. The dispelling pen need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing convenience significantly, and increasing the security of the substrate at the time of dispelling.

Abstract: A protection tool for an electronic drill provides various functions when drilling is carried out. The electronic drill has a front end with a through hole located at the front end and a drill head extending through out the through hole. The protection tool is moveably mounted at the front end of the electronic drill along an operation direction. A guard plate includes a pore aligning with the through hole and provides pass way for the drill head. A supporting frame is assembled with the guard plate and is moveably mounted at the front end of the electronic drill along the operation direction, so that the guard plate is positioned at a variable distance from the front end according to the movement of the supporting frame with respect to the front end.

Abstract: An electronic drill with revolving replaceable drilling heads includes a housing, a driving unit, a rotary cover, and a plurality of drill heads. The housing has an opening, a through hole, a containing room connected therebetween. A motor container is disposed within the containing room to contain a motor of the driving unit. The rotary cover is assembled to the housing and is rotatable so that the plurality of drill heads coupled to the rotary cover is moveable freely in a rotary track between the motor container and the housing. One of the drill heads may be rotated to be aligned with a rotary hole of a gear set driven by the motor and pushed forward for use. The drill head can also be retracted backward and replaced in the electronic drill by rotating the rotary cover, so that another drill head can be pushed outward for use.

Abstract: A method for image zoom out processing includes: determining whether a predetermined zoom out ratio is smaller than a first predetermined threshold; when the predetermined zoom out ratio is smaller than the first predetermined threshold, performing a zoom out process on an image according to the first predetermined threshold by a bilinear interpolation algorithm to obtain a zoomed out image; determining whether a product of a resolution of the zoomed out image and the first predetermined threshold is greater than or equal to a target resolution; when the product is greater than the target resolution, repeating the step of performing the zoom out process; when the product is smaller than the target resolution, performing the zoom out process on the image according to a second predetermined threshold by the bilinear interpolation algorithm so that the resolution of the zoomed out image reaches the target resolution.

Abstract: The disclosure relates to a dispelling pen. The dispelling pen comprises a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case, the accommodation cavity is connected with the pen head via a pipeline, and a switch control valve is disposed on the pipeline. As compared to the prior art, the dispelling pen according to the disclosure need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing the convenience significantly, and increasing the security of the substrate at the time of dispelling.

Abstract: The invention provides a packaging container for plate shaped articles and a packaging method using the same. The packaging container comprises a container sole plate, a container lid plate and container side plates. Each of them is provided with detachable assembling parts which allow the container sole plate, the container lid plate and container side plates to be detachably assembled to form the packaging container. The arrangement of detachable assembling parts on the container sole, the container lid and the container side plates may realize the detachable assembly among them. That is, any side of the cubic packaging container can be separately detached during the packaging operation, such that it is possible to more easily and promptly package or obtain the plate shaped articles, while the plate shaped articles are hardly to be damaged when being packaged, thereby fulfilling the demand on automatic packaging for plate shaped articles.

Abstract: A channel and noise estimation method includes: performing channel estimation on a received signal to obtain a real channel estimation value; filtering the real channel estimation value to obtain a filtered channel estimation value; calculating a biased noise power value, a biased signal power value, a biased noise correlation and a biased signal correlation according to the filtered channel estimation value; calculating an unbiased noise power value, an unbiased signal power value, an unbiased noise correlation and an unbiased signal correlation according to the biased noise power value, the biased signal power value, the biased noise correlation and the biased signal correlation.

Abstract: A protection tool for an electronic drill provides various functions when drilling is carried out. The electronic drill has a front end with a through hole located at the front end and a drill head extending through out the through hole. The protection tool is moveably mounted at the front end of the electronic drill along an operation direction. A guard plate includes a pore aligning with the through hole and provides pass way for the drill head. A supporting frame is assembled with the guard plate and is moveably mounted at the front end of the electronic drill along the operation direction, so that the guard plate is positioned at a variable distance from the front end according to the movement of the supporting frame with respect to the front end.

Abstract: An electronic drill with revolving replaceable drilling heads includes a housing, a driving unit, a rotary cover, and a plurality of drill heads. The housing has an opening, a through hole, a containing room connected therebetween. A motor container is disposed within the containing room to contain a motor of the driving unit. The rotary cover is assembled to the housing and is rotatable so that the plurality of drill heads coupled to the rotary cover is moveable freely in a rotary track between the motor container and the housing. One of the drill heads may be rotated to be aligned with a rotary hole of a gear set driven by the motor and pushed forward for use. The drill head can also be retracted backward and replaced in the electronic drill by rotating the rotary cover, so that another drill head can be pushed outward for use.

Abstract: A method for image zoom out processing includes: determining whether a predetermined zoom out ratio is smaller than a first predetermined threshold; when the predetermined zoom out ratio is smaller than the first predetermined threshold, performing a zoom out process on an image according to the first predetermined threshold by a bilinear interpolation algorithm to obtain a zoomed out image; determining whether a product of a resolution of the zoomed out image and the first predetermined threshold is greater than or equal to a target resolution; when the product is greater than the target resolution, repeating the step of performing the zoom out process; when the product is smaller than the target resolution, performing the zoom out process on the image according to a second predetermined threshold by the bilinear interpolation algorithm so that the resolution of the zoomed out image reaches the target resolution.

Abstract: A channel and noise estimation method includes: performing channel estimation on a received signal to obtain a real channel estimation value; filtering the real channel estimation value to obtain a filtered channel estimation value; calculating a biased noise power value, a biased signal power value, a biased noise correlation and a biased signal correlation according to the filtered channel estimation value; calculating an unbiased noise power value, an unbiased signal power value, an unbiased noise correlation and an unbiased signal correlation according to the biased noise power value, the biased signal power value, the biased noise correlation and the biased signal correlation.