273results about How to "Not easy to cover" patented technology

The invention discloses a desktop portable sight line tracking method and apparatus. The method comprises the steps of clicking a preset calibration point on a screen by a user to perform calibration, and capturing a facial image of the user by a system; performing pupil localization and Purkinje hot spot localization on the captured facial image of the user, extracting an eigenvector, and standardizing the eigenvector; obtaining a mapping relationship through calibration point data, and substituting the standardized eigenvector of each frame of image into the mapping relationship to obtain actual fixation point coordinates; and extracting fixation point coordinates in all image frames to realize sight line tracking. According to the method and apparatus, an ellipse fitting-based improvement method is proposed for accurately locating the pupil; two Purkinje hot spots are simultaneously located through a clustering-based method; and the method and apparatus have the advantages of quickness and accuracy for localization.

The invention discloses a high-temperature glaze coating, a preparation method thereof, a binder and a using method of the coating, and aims at solving the problems of poor high-temperature resistance, low emissivity and absorptivity in a high-temperature zone, instability, and easiness of attenuation of the existing far-infrared energy-saving coating. The high-temperature glaze coating has the characteristics of good radiation heat transfer effect, high external blackness (the emissivity is greater than 0.95) and the like, and has the advantages of stable emissivity and absorptivity, non-attenuation performance and long service life in a long-term use process. Meanwhile, the coating can be tightly combined with a basal body by matching with the binder disclosed by the invention; the adhesive force is increased; a glazed ceramic polymer can be formed on the basal body after high-temperature sintering; the high-temperature glaze coating has the advantages of hardness, abrasive resistance, and long service life, and does not fall off; and the coating disclosed by the invention can also evenly coat the surface which cannot be covered by general coatings.

A method for applying pressure to skin with a dressing. The method including adhering at least a portion of the dressing to the skin and changing the shape of the dressing after application of the dressing to the skin wherein the changed shape applies pressure to the skin. The changing can include releasing a member from the dressing to allow the dressing to change the shape of the dressing; deforming at least a portion of the dressing to change the shape of the dressing or allowing the dressing to heat to above a transition temperature at which the dressing changes shape.

The present invention provides a light-diffusing member having no non-uniformity in stripes. The light-diffusing member according to the present invention is for diffusing at least a part of transmitted light by totally reflecting the same. The light-diffusing member comprises a light-diffusing part that has a diffusing-part base having a plurality of grooves tapered down toward the incident side, formed on the light-outgoing side in juxtaposition with one another, and light-absorbing parts formed, in the grooves in the diffusing-part base, by a radiation-curing resin composition. The radiation-curing resin composition includes colored particles. The colored particles have a mean particle diameter of 3.5 μm or more and 20 μm or less.

The invention discloses a target tracking method based on local feature learning. A target object and background are resolved into a large number of local units having dimension and shape invariance which serve as training samples of a target and background classification model, and a mode of deep learning is adopted to learn local expression of the target object and background from the training samples. The degree of confidence that each specific area in an image belongs to the target object is judged, thereby realizing accurate positioning of the target object. Since local expression obtained by learning of a large number of samples has a high target identification capability, the tracking method has relatively high adaptability to situations such as target deformation and target occlusion. When an object appearance model is updated, local areas with a relatively high target confidence degree are extracted as training samples of the model, and the model is updated. In the process of target tracking, the method continuously updates the appearance model, learns key characteristics of the target object, and can obtain a relatively good tracking effect under the circumstance that an appearance change is relatively big.

The present invention discloses a ceiling-based indoor moving robot vision positioning method, wherein ceiling photographs are captured from the front surface at a set frequency, the characteristic lines and the characteristic points in the two ceiling photographs are continuously compared, and the compared results are converted into the movement rotation angle and the movement displacement increment of a moving robot in a world coordinate system so as to achieve the self-positioning of the moving robot. According to the present invention, the ceiling is adopted as the reference target, and compared with other objects, the ceiling is not easily blocked and the elements in the photograph are monotonous, such that the image processing unit conveniently extracts the outline and analyzes the photograph; and the photographs are captured by making the optical axis of the camera be perpendicular to the ceiling, such that the translation and rotation change between the previous frame image and the next frame image is directly reflected in the two-dimensional photograph so as to simplify the calculation on the image analysis.

The invention relates to a sustainable hybrid pervious concrete pavement structure. The pavement structure comprises a surface layer, a middle layer and a bottom layer from top to bottom; the surface layer and the middle layer are paved by use of pervious concrete different in perviousness coefficient, while the bottom layer is a hardcore bed, and the perviousness coefficients and the porosities gradually increase from the surface layer to the bottom layer; the pervious concrete of the surface layer is composed of the following components in kilograms per cubic meter (kg/m<3>): 300-400kg/m<3> of cement, 1400-1600 kg/m<3> of 5mm-10mm gravel, 2.2-3.25 kg/m<3> of additives and 85-100 kg/m<3> of mixing water; the pervious concrete of the middle layer is composed of the following components in kilometers per cubic meter (kg/m<3>): 280-380kg/m<3> of cement, 1350-1560 kg/m<3> of 10mm-20mm gravel, 2.0-3.0 kg/m<3> of additives and 75-90 kg/m<3> of mixing water. The sustainable hybrid pervious concrete pavement structure is a machined rolled pervious concrete pavement structure; a pyramid perviousness manner is adopted so that the perviousness of the pavement structure is excellent; water holes are not prone to be covered and blocked by dust, and therefore, the service life of the pervious concrete pavement structure is greatly increased.

The invention discloses a control method and system against batch mix-up in a PCB production process. The method comprises that each core plate is distributed with a unique ID code and provided with the corresponding ID code, and information of the ID code includes the model, the batch number and the number of the core plate; and the core plates are screened according to the models and batch numbers of the ID codes. Thus, the core plates of different batches can be screened rapidly and accurately according to the ID codes, the phenomenon of batch mix-up is avoided, quality-related accidents are avoided, and the production quality and efficiency are improved; and the ID code arranged in the edge of the core plate in a hole row form can be read conveniently and rapidly, is effectively prevented from adverse influence and is durable.

A dressing for covering a wound. The dressing including: a first component having a first shape; a second component releasably attached to a first surface of the first component to maintain the first component in a second shape different from the first shape; and an adhesive disposed on a surface of the first component different from the first surface for attaching the first component to the wound such that the second component can be released from the first component to allow the first component to take the first shape to apply a pressure to portions of the skin surrounding the wound to close the wound; wherein the second component is a mechanical device.

The invention discloses a passion fruit cultivation method, and relates to the technical field of fruit tree cultivation. According to the method, a cultivation frame provided with stand columns which are arranged in a rectangular array mode is arranged on the ground, a lower cross rod with the length ranging from 0.3 m to 0.5 m is installed on the portion, 0.8 m-0.9 m away from the ground, of each stand column, and an upper cross rod with the length ranging from 1.2 m to 1.5 m is installed on the portion, 1.25 m above the corresponding lower cross rod, of each stand column; the two ends of each upper cross rod are connected with the two ends of the corresponding lower cross rod through inclined struts respectively, the inclined struts on the same side of the same column of the stand columns are connected through five longitudinal lines respectively, and the lower cross rods on the same column of the stand columns are connected through middle part connection lines of the lower cross rods. The method comprises the steps of cultivation, guiding and binding on all levels of tendrils of passion fruit. Compared with the prior art, the growing space for branches and tendrils of the passion fruit is large, ventilation and light penetration are good, the fruits are not prone to be shaded by the branches and leaves, fruit coloring is promoted, the sugar content is increased, the quality of the fruit is high, the average yield per mu ranges from 2,000 kg to 2,250 kg, and the economic benefit is high; the passion fruit cultivation method has the advantages that the production cost and management cost are reduced, work and labor are saved, and operation is easy and convenient.

The invention discloses an intelligent video monitoring system and a method for detecting human body tumbling. The system has a human body accidental tumbling detecting function and can alarm in a wireless transmission manner and automatically store video information before and after a human body tumbles, so that the video information can be backtracked. According to the technical scheme, the intelligent video monitoring system and the method have the advantages that labor cost can be greatly saved, the intelligent video monitoring system is not easy to block, realizes all-dimensional video monitoring, is high in detection accuracy, rich in alarming signals and convenient to use, and can alarm timely, and the like.

The invention discloses an aqueous organosilicon grafted (methyl) acrylic polymer and a preparation method of an emulsion thereof. The method comprises the following steps that 100 weight parts of poly(methyl)acrylate emulsion, 15-50 weight parts of polysiloxane cation emulsion and 0.1-0.5 weight part of catalyst react at 60-90 DEG C for 3-8h; and organic solvents are deprived to obtain the aqueous organosilicon grafted (methyl) acrylic polymer emulsion. The invention employs long-chain alkyl benzene sulfonic acid as a reactive emulsifier, so the emulsion has a good emulsification effect; meanwhile, an emulsion film has no residual emulsifier therein, so the emulsion has a better film performance. The final polymer emulsion has a high organosilicon content; and the grafted siloxane chain is long and is not easily embedded or covered by an acrylate main chain, so as to fully play a modification effect of the organosilicon. The operation method of the invention has low requirements of equipment and raw materials, and is beneficial for the realization of industrialized production.

The invention discloses a portable operation shadowless lamp with a camera shooting function. The portable operation shadowless lamp is characterized in that the portable operation shadowless lamp is provided with a base capable of being dragged and moved, the base is provided with an accommodating box capable of being opened or closed and supporting rods detachably connected, and LED illumination devices and camera shooting devices are arranged at the ends of the supporting rods in a detachable mode; when the portable operation shadowless lamp is not used, the supporting rods, the LED illumination devices and the camera shooting devices are detached and placed into the accommodating box and can be conveniently dragged and moved; when the portable operation shadowless lamp is in use, the supporting rods, the LED illumination devices and the camera shooting devices are sequentially connected and assembled to form a floor shadowless lamp. The portable operation shadowless lamp has the advantages of being convenient to carry and flexible to use. Furthermore, because the portable operation shadowless lamp is provided with the illumination devices and the camera shooting devices, the portable operation shadowless lamp has the operation illumination function and can also conveniently achieve medical camera shooting. According to the portable operation shadowless lamp, the brightness and light spots of the illumination devices can be intelligently adjusted so as to meet different illumination requirements.

The invention discloses a multi-layered PCB and a processing method therefor. The processing method comprises the steps of setting a unique first identifier on a current inner layer core board at the initial moment in the manufacturing process of each inner layer core board; reading the first identifier of the current inner layer core board when the current inner layer core board passes through each equipment, and recording the current equipment information in a corresponding position in a database; in a fusing process, pre-reading the first identifier of each to-be-fused inner layer core board in each layer and corresponding equipment information, and synthesizing the read information to generate a unique second identifier, and setting the second identifier on a combined core board which is formed by fusing; and in a laminating process, pre-reading the second identifier on the combined core board, and setting the second identifier on the multi-layered PCB which is formed by lamination. According to the embodiments disclosed in the invention, the outer layer information of the multi-layered PCB is obtained by combination of information of each inner layer, so that a working staff can carry out efficient and accurate quality tracking according to the outer layer identification information.

The invention relates to a catalyst for preparing propylene from butane and ethylene and a preparation method thereof, mainly solving the problems of low activity and short service life of a catalyst in the prior art. The catalyst for preparing propylene from butane and ethylene comprises the following components in percentage by weight: 0-80 percent of at least one metallic oxide selected from alkali metals or alkaline-earth metals, 0.8-20 percent of tungstic oxide, 10-80 percent of at least one of MCM series molecular sieves, SBA series molecular sieves, HMS series molecular sieves, and MSUseries molecular sieves and 0-20 percent of SiO2. The invention better solves the problems in the prior art and can be applied to the industrial production of preparing the propylene from the butane and the ethylene.

The invention relates to a road end sensing method, device, road end equipment and system based on deep fusion. The method comprises the following steps: obtaining sensing data collected based on a road end sensor and cloud data collected based on cloud equipment; calculating according to the perception data and the cloud data to obtain road end perception information, wherein the road end sensinginformation comprises a semi-static target object and a drivable area, and the semi-static target object is an object which is static in a first time range and dynamic in a second time range; and sending the road end sensing information to a vehicle end, so that the vehicle end performs deep fusion on the vehicle end sensing information and the road end sensing information to obtain fusion information, and drives a vehicle to run according to the fusion information. According to the invention, deep fusion is carried out based on the original data collected by the road end sensor and the clouddata, the semi-static target object and the drivable area are obtained through calculation and issued to the vehicle end, and the automatic driving decision planning capability of the vehicle end isenhanced.

A cover support mechanism regulates an opening angle of an openable cover with respect to a chassis of an electronic device. The cover constitutes a portion of the chassis. The mechanism has a cord shaped or tape shaped stopper, and a support unit. The stopper has a first end portion and a second end portion, the first end portion being fixed to the cover. The support unit supports the second end portion of the stopper. The support unit is provided to the electronic device. The support unit has a receiving portion, a biasing member, and a braking unit. The receiving portion has a space for pulling in the second end portion of the stopper. The biasing member applies force to the stopper for pulling in the stopper into the receiving portion. The braking unit applies frictional force to the stopper when the cover is opened.

The invention discloses a method for preparing hydrogen by using an improved silica-alkali method, and belongs to the technical field of on-line hydrogen preparation. The preparation method comprises the steps that silicon iron alkali composite powder and potassium hydroxide are mixed in the mass ratio of (1-1.2):(0.5-15), and then added into an aqueous reaction medium with the mass being (1-30) times of the mass of the mixture, a reaction is conducted at the temperature of 25-70 DEG C, and the hydrogen is prepared, wherein the silicon iron alkali composite powder comprises silicon-iron alloy. According to the method, the process is simple and easy to control, the hydrogen yield can be improved, and the hydrogen preparation cost can be reduced.