48results about How to "Good anti-noise effect" patented technology

The invention discloses an automatic recording method and device. The automatic recording method and device are used for solving the technical problem that important content can be missed and not recorded in the prior art. The automatic recording method includes the following steps that identity characteristic parameter information of a first recorded object is obtained, whether the first recorded object is the object needing recording or not is judged based on the identity characteristic parameter information. When the first recorded object is the object needing recording, a recording instruction is generated. The recording instruction is executed and a module with the recording function is turned on to record the first recorded object.

The invention relates to a remote sensing image resolution improving and processing method based on image segmentation and a gravity model. The method comprises the steps of preprocessing an image; performing multi-scale image segmentation of the image; selecting end members to be selected by using a orthogonal subspace projection method; constructing mixed pixel models with layered end members; obtaining the percentage values of the end members in various mixed pixels by using a mixed pixel decomposition method; selecting the mixed pixel models layer by layer; obtaining an optimum mixed pixel decomposition image; converting mixed pixel decomposition images of the end members into sub-pixel images; adjusting positions of sub-pixels and ensuring the total gravitational force among all the sub-pixels to be maximum; adjusting sub-pixels in all pixels repeatedly until all pixels in the images are processed and the processing is finished; and after the processing, obtaining sub-pixel images of which the spatial resolution is improved. Compared with the prior art, the method has the advantages of being simple in method, independent from high spatial resolution, good in anti-noise performance and capable of saving plenty of time.

The invention provides a DC convertor, which comprises an input part, a first switch element, a second switch element, a first capacitor, a second capacitor, an inductor and a third switch element, wherein the first end of the input part is connected with the first end of the first switch element and the first end of the third switch element, the second end of the first element is connected with the first end of the second switch element and the first end of the first capacitor, the second end of the third switch element is connected with the second end of the first capacitor and the first end of the inductor, the second end of the inductor is connected with the first end of the second capacitor, and the second end of the second capacitor, the second end of the second switch element and the second end of the input part are grounded. The DC convertor has properties of small output-voltage ripple, good noise resistance and rapid loading response, the output voltage can be increased or decreased, namely, the range of the output voltage is wider, and the input and the output can be effectively cut off when required.

A dishwasher that is provided with an improved soundproofing structure to reduce the manufacturing cost of the dishwasher and accomplish an improved soundproofing effect in comparison with conventional dishwashers. The disclosed dishwasher includes a washing tub provided in a cabinet. A basket is provided in the washing tub to hold dishes therein. A washing pump pressurizes wash water contained in the washing tub. An injection nozzle sprays wash water supplied from the washing pump. A soundproofing unit with a net structure is installed in the washing tub in such a way as to be spaced apart from the inner surface of the washing tub, thus dispersing wash water sprayed from the injection nozzle while reducing pressure of the wash water.

The invention provides an identity card information extraction method. The method comprises the steps of obtaining a to-be-processed image; detecting a human face in the to-be-processed image; determining the position of an identity card in the to-be-processed image based on the detected face, and obtaining an identity card image; performing binarization processing on the identity card image to obtain a processed image; obtaining a connected region of the processed image through a connected region search algorithm; carrying out character row segmentation according to the communication area, and carrying out character column segmentation according to a projection method; performing character recognition according to the CNN network model; and acquiring identity card information according toa preset identity card integration format and the character recognition result. In addition, the invention further discloses an identity card information extraction device and a computer storage medium.

An anti-noise sheath for headphone cables is processed from the following components by mass: 50%-60% of hydrogenated styrene-butadiene block copolymer, 10%-13% of polypropylene, 15%-20% of a filler, 5%-20% of lubricant, 1%-5% of a coloring agent, and 0.1%-0.3% of a stabilizer. The hydrogenated styrene-butadiene block copolymer, with a chemical formula of (C8H8-C4H6)x, is a hot melt-type rubber. The filler is calcium carbonate with a chemical formula of CaCO3. The lubricant is white mineral oil. The stabilizer is zinc stearate with a chemical formula of C8H16O4. The coloring agent is carbon powder. The anti-noise sheath for headphone cables of the present invention can prevent noise and has good anti-noise performance after being assembled in the cable, due to the use of the specific component composition and ratio.

The invention relates to an anti-noise heat-resistant ABS resin composition and a preparation method thereof. The composition includes the following raw materials, by weight: 100 parts of acrylonitrile-butadiene-styrene (ABS) resin, 5-20 parts of a heat-resistant agent, 5-20 parts of an anti-noise master batch, 0.5-1.0 part of a photo-stabilizer, and 0.5-1.5 parts of other processing additives. The preparation method includes the steps of: stirring the raw materials in a high-speed mixer to fully mix the raw materials, feeding the mixture into a double-screw extruder through a metering device to melt and composite the raw materials through transportation, shear and mixing by means of screw rods, and performing extrusion, bar drawing, cooling and granule cutting to prepare the anti-noise heat-resistant ABS resin composition. The preparation method is simple. The anti-noise heat-resistant ABS resin composition is excellent in anti-noise effect and mechanical performance, and is very suitable for being used in the field of automobile interior.

The invention relates to a heat-resistant ASA resin composition with tiger wrinkle defect eliminated and a preparation method thereof. The heat-resistant ASA resin composition is prepared from following raw materials, by weight: 30-50 parts of ASA rubber powder, 30-60 parts of SAN resin, 5-15 parts of a tiger wrinkle defect eliminating agent, 5-20 parts of a heat-resistant agent and 0.5-1.5 parts of a processing aid. The preparation method comprises the following steps: stirring and fully mixing the raw materials in a high-speed mixing machine, feeding the mixture into a double-screw extruder through a metering device to melt and composite the mixture through transportation, shear and mixing by means of screw rods, and performing extrusion, bar drawing, cooling and granule cutting to prepare the heat-resistant ASA resin composition. The method is easy to carry out. The tiger wrinkle defect on a workpiece during an injection molding process can be completely avoided by means of the ASA resin composition. The resin composition also is excellent in anti-impact, heat-resistant and such comprehensive performance, and is very suitable for being used as automobile exteriors, such as automobile gratings, columns, empennage decorative plates and the like.

The invention relates to the technical field of machining centers, in particular to a low-noise vertical machining center. The low-noise vertical machining center comprises a main machine and a protective frame. The outer side of the main machine is covered by the protective frame. The main machine comprises a machine frame, a workbench, a machining portion and a tool rest, wherein the workbench, the machining portion and the tool rest are installed on the machine frame. The machining portion is hung above the workbench in a lifting mode. The tool rest is located on one side of the machining portion. The inner wall of the protective frame is provided with an acoustic panel. The tool rest is provided with a silencer. The position, provided with the workbench, of the machine frame is provided with a damping belt. Noise produced by the machining portion in the machining process is isolated through the acoustic panel, the noise is effectively reduced when a tool of the tool rest is replaced through the silencer, vibration of the workbench is relieved through the damping belt in the machining process of the machining portion, a protection effect can be effectively achieved, and meanwhile noise brought by machining can be effectively reduced.

The invention discloses a stirring device for producing plastic. The stirring device comprises a barrel body provided with a discharging opening at the bottom, a first stirring part for transversely stirring, a second stirring part for longitudinally stirring, a driving mechanism for driving the first stirring part and the second stirring part at the same time, a plurality of supporting parts arranged at two sides of the barrel body, and a discharging mechanism arranged at the bottom of the barrel body, wherein the discharging mechanism comprises a material guide room, a closing door connectedwith the material guide room, a flow adjusting device for adjusting a discharging speed of raw materials from the material guide room, and a rotating part for driving the raw materials in the material guide room to rotate. According to the stirring device for producing the plastic, the discharging speed can be improved through the discharging mechanism and the working efficiency is improved; thefirst stirring part and the second stirring part are arranged so that the stirring efficiency of the raw materials is high, the mixing uniformity is high and conditions that the raw materials are precipitated at the bottom of the barrel body and the like are also reduced; one driving mechanism is utilized, so that the stirring device has the advantages of simple equipment structure, low fault rate, low energy consumption and low cost.

The invention relates to a paper box of an image forming device, in particular relates to an ink powder prevention bearing mechanism of the paper box of the image forming device, and belongs to the technical field of image forming devices. The ink powder prevention bearing mechanism of then image forming device is characterized by comprising a paper conveying shaft (1) and an ink powder prevention bearing (3), wherein the ink powder prevention bearing (3) comprises a main bearing (3b); the outer end face of the main bearing (3b) is connected with a baffle (3d); a cambered cap (3a) inwards extending along the axial direction is arranged on the upper half part of the inner end face of the main bearing (3b); a convex rib (3a1) is arranged on the inner side of the cambered cap (3a) along the axial direction and is in contact with the paper conveying shaft (1); the outer end face of the baffle (3d) is connected with a dustproof cap (3c). The ink powder prevention bearing mechanism can prevent noise generated by a fact that ink powder enters a space between a shaft and a bearing; meanwhile, the number of parts is reduced, mounting is simplified, and the machine cost is lowered.

A radial flow type gas pressure regulator is characterized by comprising a shell and a pressure regulating component; the top of the shell is provided with a valve cover, and a closed cavity is formedin the pressure regulator; the internal cavity of the shell is divided into a gas inlet cavity, a regulating cavity and a gas outlet cavity through the pressure regulation component; the shell is provided with a gas inlet and a gas outlet; the gas inlet extends into the gas inlet cavity, and the regulating cavity communicates with the gas outlet cavity; the gas outlet cavity communicates with thegas outlet; the pressure regulating component comprises a closing spring, an elastic membrane and a valve seat from top to bottom in sequence, and the elastic membrane is in tight contact with the valve seat; and the top of the elastic membrane is provided with the regulating cavity, and the bottom of the elastic membrane is provided with the gas inlet cavity. According to the radial flow type gas pressure regulator provided by the invention, the elastic membrane is used as an open-close part, and the radial type flow gas pressure regulator has the advantages of less movable components, the simple structure, convenient maintenance, good noise control effect, high practicability, safety and reliability and the like.

The invention discloses an intelligent anti-impact safety helmet and belongs to the field of safety supplies. The purpose is to solve the problems that the safety performance and anti-noise performance of an existing safety helmet are not good enough. The intelligent anti-impact safety helmet comprises a safety helmet body and a buffering device located at the top of the safety helmet body. Anti-noise devices are arranged on the inner sides of the two sides of the safety helmet body respectively, and provided with buckles. Clamping grooves or clamping hooks are formed in/arranged on the inner wall or the outer wall of the safety helmet body. The buckles on the anti-noise devices are matched with the clamping grooves or the clamping hooks on the safety helmet body to fix the anti-noise devices, cuboid grooves are formed in the inner walls of the anti-noise devices, the inner walls of the grooves are covered with layers of sponge, a neck-protecting device is arranged on the rear side of the safety helmet body, safety warning lights are arranged on the outer wall of the safety helmet body, and a solar panel is arranged on the outer wall of the safety helmet body and used for supplying power to the safety warning lights.

The invention discloses a microphone and electronic equipment. The microphone comprises a shell, wherein an accommodating cavity is formed in the shell, and the shell is further provided with a sound hole communicated with the accommodating cavity; a circuit board which is arranged at one end, far away from the sound hole, of the accommodating cavity; an annular magnet which is accommodated in the accommodating cavity and is fixedly connected with the cavity wall of the accommodating cavity; and a vibration assembly which is connected with the annular magnet and electrically connected with the circuit board, wherein at least part of the vibration assembly is located on the inner side of an annular space defined by the annular magnet, the vibration assembly is arranged towards the sound hole, and audio frequency can penetrate through the sound hole to enter the containing cavity, and the vibration assembly is driven to vibrate in the accommodating cavity, so that the vibration assembly cuts magnetic induction lines to generate current signals. The technical scheme of the invention aims to improve the acoustic performance and prolong the service life of the microphone.

The invention provides an assembled aluminum wood energy-saving door/window which comprises an outer frame with an aluminum frame and a solid wood frame, and a frame sash with an aluminum sash frame and a solid wood sash frame. The invention is characterized in that the aluminum frame and the solid wood frame are respectively provided with a clamping groove in the corresponding position, and/or the aluminum sash frame and the solid wood sash frame are respectively provided with a clamping groove in the corresponding position; a first clamping strip is arranged in the corresponding clamping grooves of the aluminum frame and the solid wood frame to connect the aluminum frame and the solid wood frame; and a second clamping strip is arranged in the corresponding clamping grooves of the aluminum sash frame and the solid wood sash frame to connect the aluminum sash frame and the solid wood sash frame. The invention has the advantages of easy assembling and strong universality, and can be used in standardized large-scale production.