98results about How to "Effectively filter out" patented technology

The invention relates to a spectacle lens capable of preventing blue light radiation and eliminating the chromatic aberration and a manufacture method thereof, which belongs to the technical field of spectacles and the manufacture method thereof. The spectacle lens is characterized in that a substrate is prepared from an organic polymer, a blue light absorbent and a UV absorbent by mixing; and a coated film layer includes a TiO2 layer, an Al2O3 layer, an ITO layer, a noble metal layer, an MgF2 layer and a SiO2 layer. The manufacture method of the spectacle lens comprises following steps of: preparing materials, mixing, stirring, curing, cleaning the substrate, reinforcing and coating film on the substrate. The spectacle lens capable of preventing blue light radiation and eliminating the chromatic aberration can effectively filter most of UV light and a portion of blue light to reduce the damage to human retina and the irritation of shortwave glare, thus reducing chromatic aberration and improving resolution of human eyes. Accordingly, persons wearing the spectacle lens can view objects clearly in weaker or stronger light environment.

The invention discloses a dense crowd people number counting method and system based on a deep convolutional neural network. The counting method comprises the following steps that: obtaining an original image which contains a dense crowd, dividing the obtained original image into a plurality of image blocks with the consistent size, and recording an original image label to which each image blocks belongs; utilizing the image block and the original image label to which each image block belongs to train the deep convolutional neural network; and utilizing the deep convolutional neural network which finishes training to calculate the people number in each image block, carrying out accumulation on the people numbers in all image blocks, and finally, obtaining all people numbers in the original image. By use of the method, crowd counting accuracy and robustness can be effectively improved.

The invention discloses an antibacterial non-woven fabric. The antibacterial non-woven fabric is prepared from, by weight, 75-100 parts of polypropylene, 10-25 parts of sodium p-styrenesulfonate, 10-20 parts of a silane coupling agent, 0.15-1 part of polyhexamethylene biguanidine hydrochloride, 0.05-0.4 part of zinc salt, 1-5 parts of bamboo charcoal fibers and 0.01-0.1 part of nanoscale fumed silica. The invention also discloses a preparation method of the antibacterial non-woven fabric and a mask with the antibacterial non-woven fabric. The antibacterial non-woven fabric prepared by the preparation method is processed into an antibacterial non-woven fabric layer of a certain size to be applied into the mask for concentratedly resisting bacteria, filtering out dust particles and preventing air from passing through gaps, so that no air circulation occurs, and the effect is promoted from the structural layer that air passes through all layers of a mask body for sterilization and filtering and then enters the mouth and the nose, and the prevention effect is accordingly achieved by preventing bacteria from spreading through the air and the saliva.

The invention discloses a vehicle violation line pressing detection method based on computer vision, and the method comprises the steps: 1, obtaining an image, carrying out the filtering and equalization processing, weakening the noise influence, and enabling the gray level distribution of the image to be uniform; 2, carrying out edge detection on the image processed in the step 1 by adopting a Canny edge detection algorithm, and carrying out image segmentation by adopting a threshold value; 3, using the Gaussian mixture background model to perform background modeling including background learning, background pixel matching, discontinuous contour processing and foreground cavity filling; 4, using Hough transformation to obtain linear information in the model obtained in the step 3, and performing AND operation on the linear image and a contour image detected by an original image Canny operator; 5, extracting features by using the moments of the image, and screening out a target straight line according to the length and angle of a straight line to be obtained during lane line detection by using the moment characteristics; and 6, judging whether line pressing violates rules or not according to the shielding condition of the lane solid line and the contour characteristics of the line pressing object.

Disclosed is a digital burr filtering circuit for clock pins of a smart card. The burr filtering circuit which is composed by a plurality of gate circuits is added at the input end of the clock pins of the smart card, high frequency burrs on the clock pins are filtered on the promise that the duty ratio is not affected. The circuit comprises a NOND gate, a NOR gate, an inverter, a delayed component chain, and a reset-set (RS) flip-flop. According to the digital burr filtering circuit for the clock pins of the smart card, nanosecond burrs can be filtered effectively, and the problem of interference to clock pins of the smart card is solved.

The invention aims to provide an intelligent isolated organ long-term maintenance device and aims to solve the problem of long-term preservation of isolated organs. The intelligent isolated organ long-term maintenance device is characterized by comprising a perfusion module, a dialysis module, an oxygenation and blood gas regulation module, an automatic blood flow control module and a temperaturecontrol module, wherein the perfusion module is sequentially connected with the dialysis module, the oxygenation and blood gas regulation module, the automatic blood flow control module and the temperature control module to form a closed loop.

The invention relates to a blue light filtering, water and oil dirt preventing and wear resisting lens and a preparation method thereof. The lens comprises a substrate, and the inner surface and the outer surface of the substrate are provided with first films, second films, third films, fourth films and fifth films sequentially and symmetrically from inside to outside. The first films are titanium oxide layers, and the thickness ranges from 10 nm to 100 nm. The second films are silicon dioxide layers, and the thickness ranges from 50 nm to 100 nm. The third films are metal layers, and the thickness ranges from 5 nm to 20 nm. The fourth films are high-hardness layers, and the thickness ranges from 10 nm to 50 nm. The fifth films are fluoride layers, and the thickness ranges from 3 nm to 10 nm. The preparation method comprises the following steps that 1, the substrate is washed; 2, the inner surface and the outer surface of the substrate are coated with the films respectively. The lens can effectively filter out 33% of harmful blue light and dazzling light or above, visual fatigue can be effectively relieved, the wear resistance of the lens can be remarkably improved through the high-hardness layers, and the fluoride layers have the good hydrophobicity and oil dirt preventing function.

The invention relates to a blue light filtering, dazzling preventing and wear resisting lens and a preparation method thereof. The lens comprises a substrate, and the inner surface and the outer surface of the substrate are provided with first films, second films, third films, fourth films, fifth films, sixth films, seventh films and eighth films sequentially and symmetrically from inside to outside. The first films, the fourth films and the sixth films are titanium oxide layers, and the thickness ranges from 10 nm to 100 nm. The second films, the fifth films and the seventh films are silicon dioxide layers, and the thickness ranges from 50 nm to 100 nm. The third films are metal layers, and the thickness ranges from 5 nm to 20 nm. The eighth films are high-hardness layers, and the thickness ranges from 10 nm to 50 nm. The preparation method comprises the following steps that 1, the substrate is washed; 2, the inner surface and the outer surface of the substrate are coated with the films respectively. The lens can effectively filter out 33% of harmful blue light and dazzling light or above, visual fatigue can be effectively relieved, and the wear resistance of the lens can be remarkably improved through the high-hardness layers.

The invention provides an optical receiving module of a high-sensitivity fire smoke alarm. The optical receiving module comprises six parts, namely an optical filter, a silicon photocell, a current-voltage conversion circuit, a filter circuit, a voltage amplifier circuit and an overvoltage protection circuit. The silicon photocell with a large photosurface is used for receiving smoke particle scattered light. The resistance to ambient light is effectively enhanced through the narrow-band optical filter. According to a signal processing circuit, a two-stage operational amplifier, a plurality of resistors and capacitors are mainly used for forming the current-voltage conversion circuit of the silicon photocell, the first-order RC high-pass filter circuit, the voltage amplifier circuit and the overvoltage protection circuit in sequence. The optical receiving module has the advantages of being simple, high in sensitivity and resistant to external ambient interference.

The invention discloses a water filtering device of a palate-type gate. The device comprises a valve body, gears, a turning plate bracket, a front water outlet flange, a filter screen, a front sealing element, turning plates, a filter screen, a bottom water outlet flange, a lateral sealing element and a lifting lug, wherein the lifting lug is connected with turning plate bracket; the turning plate bracket is connected with turning plates; the gears on the two turning plates of the palate-type gate are meshed; the turning plates are arranged in the valve body; the front water outlet flange is arranged on the front surface of the valve body; the bottom water outlet flange is arranged on the bottom surface of the valve body; the front and lateral surfaces of the valve body are provided with the front sealing element and the lateral sealing element respectively; and the filter screens are arranged on the front water outlet flange and the bottom water outlet flange respectively. The water filtering device of the palate-type gate can effectively and reliably realize the function of opening and closing the turning plates; moreover, water can be effectively filtered out of materials; and the device has a simple structure and low cost.

The invention provides the guided design approach to optimize the device performance for a best area-efficient layout footprint in a single-leg MOS device that is based on any of the SOL SOS or SON technologies. The design methodology depends on new proprietaries device architectures that are also being claimed in this patent and that allow the implementations of the design equations in our methodology.

A hydrogen-purifying device is suitable for a fuel cell (FC). The hydrogen-purifying device includes a guiding tank, a first water-absorbing material, a porous filter material and a second water-absorbing material. The guiding tank is connected to a hydrogen-generating device and a fuel cell. The hydrogen-generating device generates hydrogen, moisture mixed with the hydrogen and impurities mixed with the hydrogen. The first water-absorbing material, the porous filter material and the second water-absorbing material are disposed in the guiding tank. The hydrogen passes through the first water-absorbing material to remove a part of the moisture. Then, the hydrogen further passes through the porous filter material to remove the impurity. After that, the hydrogen further passes through the second water-absorbing material to remove another part of the moisture and arrives at the fuel cell.

The invention belongs to the technical field of wireless electric power transmission, and provides an AC envelope modulation based wireless electric power transmission system. The AC envelope modulation based wireless electric power transmission system comprises a primary circuit and a secondary circuit; the primary circuit comprises an AC electric power input module, a high-frequency envelope electric power conversion module and a primary high-frequency resonant link; the secondary circuit comprises a secondary high-frequency resonant link, a high-frequency envelope electric power demodulation module and an AC electric power output module; and the high-frequency envelope electric power demodulation module comprises a secondary inversion circuit, a secondary current sampling circuit, a Butterworth electronic filter, a current zero-crossing detection circuit, a logic circuit and a driving circuit. As a secondary rectification circuit is removed, and the Butterworth electronic filter is adopted to process secondary pickup resonant current, a soft driving signal for polarity switching is provided for the secondary inversion circuit, and the secondary control is enabled to be independent and simple; and the AC envelope modulation based wireless electric power transmission system in such structure greatly reduces the overall volume and cost of the system, and increases the transmission efficiency and an input power factor.

The invention discloses a saline and alkaline soil amelioration drainage system with a novel filter material wave tube, and belongs to the technical field of saline and alkaline soil drainage systems. The drainage system comprises a water collection tank, an inspection well is arranged on the right side of the top of the water collection tank, a water level detection device is arranged on the left side of an inner cavity of the inspection well, an inner cavity of the water collection tank is provided with a water suction pump, a drainage pipeline is arranged at the top of the water suction pump, a moisture and salinity adjuster is mounted on the left side of a water collection pipe, and a solar charging panel is mounted at the top of a supporting rod. According to the drainage system, the water collection tank and the inspection well are embedded in the ground, rainwater can be collected through a water inlet pipeline when it rains, a water inlet is formed in a drainage underground pipe, a specific filter material layer is arranged on the outer wall of the drainage underground pipe, saline and alkaline moisture can be effectively filtered, crops can be irrigated by the drainage system, water resources are saved, environments are protected, deterioration of saline and alkaline soil can be effectively relieved, and the drainage system is convenient to use and has excellent ecological significance.

The invention provides an acidic coal mine wastewater treatment device and method. The acidic coal mine wastewater treatment device comprises a coagulation tank, a precipitation tank, a filter unit and a bioreactor, wherein a stirrer is arranged in the coagulation tank, and the rotation speed of the stirrer is adjustable. The coagulant is prepared by the following steps: preparing diesel caustic sludge with the oil content of lower than 5% and water into 20-40% caustic sludge slurry, preparing PAM (polyacrylamide) into a 0.06-0.1% water solution, and mixing the PAM solution and the caustic sludge slurry in a volume ratio o 1:2-1:5. The filter unit is a filter column which is 1.5-1.8 meters long, the internal diameter of the column is 30 millimeters, and the filter material used in the filter column is manganese sand soaked with a potassium permanganate solution. A biomembrane carrier is added into the bioreactor; and the carrier is a suspended biological carrier prepared from cocoanut shells.

The invention discloses a lamp cover for blue light filtering, sterilization and reflection resisting and a manufacturing method thereof. The lamp cover comprises a substrate. A first film layer, a second film layer, a third film layer, a fourth film layer, a fifth film layer, a sixth film layer, a seventh film layer, an eighth film layer and a ninth film layer are successively arranged from inside to outside on the outer surface of the substrate. The first film layer, the fourth film layer and the sixth film layer are trititanium pentoxide layers. The thickness of each of the trititanium pentoxide layers is 10-100 nm. The second film layer, the fifth film layer and the seventh film layer are silicon dioxide layers. The thickness of each of the silicon dioxide layers is 50-100 nm. The third film layer is a metal layer of which the thickness is 5-20 n. The eighth film layer is a nano-silver layer of which the thickness is 5-20 nm. The ninth film layer is an acrylic acid layer of which the thickness is 5-15 nm. The manufacturing method comprises following steps of 1) cleaning the substrate; and 2) carrying out film coating on the outer surface of the substrate. The lamp cover is capable of effectively filtering harmful blue light and dazzling light, so reflection resisting performance can be improved and the lamp cover has a sterilization function.

The invention belongs to the technical field of laser ranging, and particularly relates to a signal detection method and system capable of improving the laser radar detection distance and precision. According to the method, a photon counting technology and a weak signal detection technology are combined, and aperiodic multi-pulse averaging and autocorrelation detection are included; and the specific process is as follows: after a reflected light signal reaches a laser radar, stray light is filtered by a narrow-band optical filter, and then photon counting amplification is carried out by adopting a photon counting technology; non-periodic multi-pulse averaging is performed, namely multi-pulse cumulative averaging is performed according to a pulse period; and a pulse autocorrelation detection method is adopted to measure the time interval between the start pulse and the end pulse. The system comprises a pulse laser, a photon counter, a multi-time averaging module, an autocorrelation detector and the like. The multi-time averaging module is used for non-periodic multi-pulse averaging calculation, and the autocorrelation detector is used for autocorrelation operation to obtain a termination pulse signal. According to the invention, long-distance and high-precision target detection can be realized.

The invention discloses a brewing method of pitaya fruit wine, and belongs to the technical field of fruit wine brewing. The method comprises the following steps of treating raw materials and performing cleaning: cleaning the raw materials with deionized sterile water, after cleaning, performing draining, performing cutting into slices, performing pulping, performing canning and macerating, performing enzymolysis, performing clarification, performing fermentation, pouring wine, performing storage, performing aging, adding clarifying liquid for clarification, performing filtration, performing oxidization resistant treatment, performing blending, performing freezing treatment, performing sterilization and plate filtration, performing stability test, performing precise filtration, and performing quality testing and filling: performing quality testing according to the enterprise standard, and performing filling after the pitaya fruit wine is qualified. The pitaya fruit wine brewed by the brewing method disclosed by the invention has the advantages of being good in mouth feel, stable in quality and the like, and the sensory indexes and the physical and chemical indexes of the produced pitaya wine all reach the national standard.