81results about How to "Costly to solve" patented technology

The invention discloses a device and a method for realizing augmented reality. The device includes a display chip, a lens assembly, a beam splitter, and a Fresnel lens group. The display chip is used for displaying an image. The lens assembly is positioned on one side of the display chip, and is used for converging light emitted from the display chip to get converged emergent light. The beam splitter is positioned on the emergent light side of the lens assembly and at a first preset angle relative to the plane where the display chip is, and is used for transmitting one part of the emergent light out of the beam splitter to get first transmitted light and vertically reflecting the other part of the emergent light to the Fresnel lens group. The Fresnel lens group is positioned at a second preset angle relative to the beam splitter, and is used for reflecting the light hitting the Fresnel lens group back to the beam splitter and transmitting the light out of the beam splitter to get second transmitted light. A first Fresnel lens and a second Fresnel lens are Fresnel lenses with complementary surface types. The first transmitted light and the second transmitted light are used to form a stereo scene of augmented reality. The cost of the augmented reality equipment glasses is reduced.

The invention discloses a device integrating cleaning and garbage collection and a control method thereof and belongs to the technical field of sweeping devices.The device is designed for solving the problems that existing devices are singular in function, high in cost and the like.The device integrating cleaning and garbage collection comprises a floor sweeping robot and an intelligent garbage can which are detachably connected, the floor sweeping robot is provided with a garbage outlet which can be opened and closed, and the intelligent garbage can is provided with a garbage inlet which can be communicated with the garbage outlet and can be opened and closed.The control method of the device integrating cleaning and garbage collection comprises the steps that when the story height of a space to be swept is lower than the device, the intelligent garbage can is dismounted, and only the floor sweeping robot is used; when the story height of the space to be swept is equal to or higher than the device, the intelligent garbage can is mounted on the floor sweeping robot to be used jointly.By means of the device integrating cleaning and garbage collection and the control method thereof, garbage storage space is increased, the functions of the floor sweeping robot and the intelligent garbage can are added, and use cost is low.

The invention discloses a low-speed park unmanned vehicle cruising method based on machine vision. The method comprises the steps that 1) establishing a road semantic segmentation model, and enablingthe semantic segmentation model to adjust a backbone of an ICNet by making a road local data set, training road local data, finely adjusting parameters and a network structure on the basis of the ICNet to reduce the size of a convolution kernel; loading a model, inputting an image to be predicted, and operating model prediction input; and 2) calculating the distance of the vehicle deviating from the road center based on the identification result of the road semantic segmentation model. The method solves the problem of high cost of an automatic driving scheme taking a laser radar as a main sensor, and also solves the problem that lane line perception of traditional computer vision is affected by environmental complexity. By means of the method, due to the fact that the performance of the localized ICNet model is improved, the Yolov3 model and the ICNet model can still operate at the same time, and 20 fps + can still be achieved.

The invention provides a heart three-dimensional model constructing method and a simulated heart surgery guidance system, thereby settling technical problems of single heart surgery training mode, high cost, incapability of simulating a true surgery scene, incapability of realizing preoperative surgery simulation, few compatible heart models and relatively low training efficiency in prior art. A virtual reality simulated heart surgery guidance system comprises a virtual reality display device, a control input device, a memory and a central processor. The method and the system are advantageousin that a hearty dynamic model is displayed so that a doctor understands a heart motion process; immersive training of a true surgery scene is realized through VR technology, thereby optimizing a training effect; a doctor performs training by means of a VR handle and VR glasses, thereby realizing low training cost; a heart model is divided into multiple modules which are be independently edited, thereby facilitating construction of multiple pathological heart dynamic models and improving system compatibility; a wireless transmission module and a wired transmission module are arranged, therebyrealizing multiple-person viewing and improving training efficiency.

The invention relates to a cutting tool (1), which comprises a main tool body (2) and at least one insert seat (3) disposed thereon, said seat having a bottom surface (5) for mounting a cutting insert (4), and further comprises a dowel pin (11), which penetrates a through-hole (10) of the mounted cutting insert (4) and the bottom surface (5) and can be fixed to the main tool body (2). A center longitudinal axis (17) of the fixed dowel pin (11) is arranged at an acute angle (W1) with respect to the bottom surface (5). The dowel pin (11) comprises a spherical segment for mounting on a bearing surface of the through-hole (10). The surface of the spherical segment is interrupted by a segment groove.

The invention discloses an FDMA-based unmanned aerial vehicle measurement and control cellular communication method. The method comprises the following steps: establishing a hybrid base station; constructing a cellular communication network by using the hybrid base station; allocating a downlink frequency band, an uplink frequency band and a broadband frequency band to the cellular communication network; allocating a narrowband downlink frequency band and a narrowband uplink frequency band to each unmanned aerial vehicle; selecting a movable base station of the unmanned aerial vehicle from thehybrid base stations, and adjusting the direction of an antenna unit of the movable base station; sening notification information to the unmanned aerial vehicle, so that the direction of the unmannedaerial vehicle antenna unit is matched with the direction of the base station antenna unit of the movable base station by the movable base station; broadcasting a telemetry frame signal in a narrowband downlink frequency band by the unmanned aerial vehicle; receiving the telemetry frame signal and performing demodulation, decoding and frame format analysis by the movable base station to obtain atelemetry frame; and forwarding the telemetering frame by the movable base station to a main console. T through the FDMA technology, signal interference between unmanned aerial vehicles is avoided, multiple unmanned aerial vehicles can be accommodated, and the multiple access problem of an unmanned aerial vehicle measurement and control system is solved.

The invention relates to a large-aperture schlieren system suitable for a test section of a wind tunnel, and aims to solve the problems of degradation in system sensitivity and background illuminanceuniformity and high cost due to the adoption of large window glass in an existing schlieren observing system. The system comprises a light source system, a pre-sealing viewing window, a collimation main reflecting mirror, a schlieren system, a schlieren main reflecting mirror, an after-sealing viewing window and an imaging system, wherein the schlieren system comprises a pre-sealing schlieren lenscone, a test cabin and an after-sealing schlieren lens cone which are arranged in sequence; the pre-sealing viewing window is arranged on a side face of the pre-sealing schlieren lens cone; the after-sealing viewing window is arranged on a side face of the after-sealing schlieren lens cone; light rays of the light source enter the collimation main reflecting mirror by passing through the pre-sealing viewing window; and the light rays passing through the collimation main reflecting mirror enter the test cabin by passing through the pre-sealing schlieren lens cone, enter the schlieren main reflecting mirror through the after-sealing schlieren lens cone after passing through the air flow in the test cabin, are reflected by the schlieren main reflecting mirror, and enter the imaging system after passing through the after-sealing viewing window.

The invention discloses a discarded leather superfine fiber, a high electromagnetic shielding material combined with the discarded leather superfine fiber and polyvinyl alcohol and preparation methodsof the discarded leather superfine fiber and the high electromagnetic shielding material. The high electromagnetic shielding material is prepared in the way that leather-manufacturing solid waste (LSW) is added into a solid phase force chemical reactor for circulation grinding at first; then the obtained discarded leather superfine fiber and the polyvinyl alcohol are mixed in a fusion mode, and casting is performed to form films; and afterwards, film pieces are dipped into a chemical plating solution to be subjected to surface silvering reacting, flattening and air drying are also conducted,or the film pieces are spliced into a multilayer composite material. By adoption of the method, the LSW can be smashed into superfine loose short fibers which can be well compounded with the polyvinylalcohol, the dissipation effect on electromagnetic waves by leather collagenous fibers can be kept, the obtained composite material can show excellent electromagnetic shielding performance with the help of the high-efficiency reflection action of a surface silvered layer, and high-value recycling of the LSW is realized; and moreover, the advantages that operation is simple and convenient, energycan be saved, pollution is small, cost is low and mass production can be facilitated are achieved.

The invention relates to a B-pillar assembly part-level collision test device and a test method thereof. The device comprises a rigid wall, a collided trolley and a collision trolley, wherein the collided trolley is used for being rigidly connected with the B-pillar assembly, the collision trolley and the collided trolley are arranged in a same guide rail, a buffer mechanism is arranged between the collided trolley and the rigid wall, and the collision trolley, the collided trolley and the rigid wall are sequentially arranged according to the initial speed direction of the collision trolley. Compared with the prior art, the deformation behavior of the B-pillar assembly obtained by using the method is matched with the deformation behavior of the B-pillar assembly obtained by the collision test of a whole vehicle, so that the high-cost collision test of the whole vehicle can be avoided, the performance data of the B-pillar assembly matched with the collision of the whole vehicle can be provided, thereby being beneficial to more efficiently evaluating the performance of the B-pillar assembly, optimizing the design, shortening the development period and reducing the test cost.

The invention discloses a system for remote operation guidance and teaching and a method thereof. The system comprises an operating room subsystem, a server and a teaching subsystem, the operating room subsystem comprises a multi-path image acquisition module and an image processing module; the image processing module splices and integrates the multiple paths of video information into one path ofvideo information according to set picture splicing layout information, outputs the path of video information and sends the path of video information to the teaching subsystem through the server; theserver comprises a signaling service unit and a streaming media service unit; the signaling service unit is used for processing registration, call control, picture splicing layout control and mark synchronization control of each subsystem; the streaming media service unit is used for forwarding the audio and video coded data; and the integrated video information is sent to the teaching subsystem through the server, so that transmission of one path of video and multiple paths of video information is realized, the bandwidth required by transmission is greatly reduced, and the cost is saved.

The invention provides a localization method and a mobile terminal, belonging to the mobile communication field and solving the problem of the high cost of the traditional location technique. The method comprises the following steps of: acquiring plot number of the current dubiety plot when detecting a localization activating condition, extracting corresponding position information of the plot number, and transmitting the position information to a presetting monitor terminal. The technical scheme provided by the invention is applied to a mobile communication system.

The invention relates to a server, in particular to a thin server, solving the problems of high cost, huge volume and high power consumption of traditional servers. The thin server comprises a hard disk, a net jack, a physical layer chip connected with the net jack, an embedded microprocessor, a hard disk controller connected with the embedded microprocessor, an embedded system on a chip (SoC) formed by a network controller connected with the embedded microprocessor and a system storage connected with the embedded microprocessor; the hard disk controller is connected with the hard disk, and the network controller is connected with the net jack through the physical layer chip. By using the embedded SoC instead of the processor and chip set in the traditional server, the invention completely solves the problems of high cost, huge volume and high power consumption of traditional servers, is simple in structure and convenient in use and is applicable to individuals and such places as home, etc.

The invention discloses a quantitative analysis method for surface oxygenic functional groups of graphene materials. The method includes that alkalis different in alkalinity and graphene surface oxygenic functional groups different in acidity are in specific acid-alkali neutralization reaction, dilute solutions of sodium hydroxide, sodium carbonate, sodium bicarbonate and sodium ethoxide are adopted for neutralizing the surface oxygenic functional groups of the graphene materials, and quantitative information of single oxygenic functional groups is obtained according to difference values of consumption of the alkalis, wherein the NaHCO3 solution neutralizes carboxyl groups, the Na2CO3 solution neutralizes carboxyl groups and lactonic groups, the NaOH solution neutralizes carboxyl groups, lactonic groups and phenolic hydroxyl groups, and the EtONa solution neutralizes carboxyl groups, lactonic groups, phenolic hydroxyl groups and carbonyl groups. The quantitative analysis method has advantages of accuracy in determination and low test cost.

The invention relates to an anticorrosive coating and provides a solvent-free anticorrosive coating for solving the problem that imported underwater applicable coatings are high in cost and domestic underwater applicable coatings are low in coating adhesion, shorter in validity period and the like. The solvent-free anticorrosive coating consists of a component A accounting for 64%-72% of the total weight of the coating, a component B accounting for 16%-20% of the total weight of the coating and a component C accounting for 12%-16% of the total weight of the coating and is an epoxy solvent-free coating. The solvent-free anticorrosive coating is good in underwater applying effect, high in coating adhesion, long in validity period ad good in anticorrosive performance, the cost is remarkably lower than those of the imported coatings, and the problem that the imported coatings are high in cost is solved. Actual coating shows that the solvent-free anticorrosive coating is good in curing effect, film forming effect and coating uniformity, the amount of entrained water in the coating process is small, the water flow influence on coating process is small, and the solvent-free anticorrosive coating is suitable for direct underwater construction in the field of ocean engineering.

The invention provides an optical burst add drop multiplexer which comprises a wavelength selective switch, a service processing module and a high-speed 1*N optical switch. The wavelength selective switch is used for separating optical signals coming from circuit receiving optical fibers according to wavelengths; the service processing module is used for determining the wavelength of the optical signal which is required to be received according to the optical signals separated by the wavelength selective switch; the high-speed 1*N optical switch is used for transmitting the optical signal with the determined wavelength in the optical signals separated by the wavelength selective switch to the service processing module under the control of the service processing module. According to the optical burst add drop multiplexer, the cost of the optical burst add drop multiplexer is reduced.

The invention belongs to the technical field of unmanned aerial vehicle communication, and discloses an unmanned aerial vehicle cellular communication multi-base-station data fusion method based on anordered circular queue, which comprises the following steps: establishing hybrid base stations; constructing a cellular communication network by using the hybrid base stations; enabling a unmanned aerial vehicle to send a telemetry frame to the hybrid base station; selecting an active base station from the hybrid base stations; enabling the active base station to send a telemetering relay frame to a console; enabling the console to construct a plurality of ordered circular queues for the plurality of unmanned aerial vehicles; enabling the console to write the data into the ordered circular queues; enabling the console to read the data of the ordered circular queues; and enabling the console to write the data of all the telemetering relay frames into the ordered circular queues, and to perform reading operation on the data in all the ordered circular queues. According to the invention, the hybrid base station cellular communication architecture is utilized, the plurality of hybrid basestations transmit telemetry data to the unmanned aerial vehicle, and the ordered circular queues are utilized to perform data fusion, so that the packet loss rate of important data is reduced, and the time complexity of the system is reduced.

The invention discloses a new technology and a system for preparing high-purity carbon monoxide by temperature control transformation and a system. The new technology includes the steps: buffering storage, compressing water rings, exhausting dust by a wet method, compressing gas, firstly purifying, secondly purifying, desorbing CO2, concentrating CO, refining CO and filling. By the new technology, feed gas is roughly purified by temperature control transformation to refine carbonic oxide, the new technology solves the problem of high cost of a traditional refining method of formamide decomposition, formic acid decomposition and the like and is simple in refining process, high in refining precision, low in cost and convenient to use.

The invention provides a network physical isolation gatekeeper development platform, and the platform comprises a physical isolation module, wherein the physical isolation module comprises a first FPGA and a second FPGA; the first FPGA is connected with an intranet or an extranet through a first PCIE interface, and the second FPGA is connected with the intranet or the extranet through a second PCIE interface. The first FPGA and the second FPGA are connected through an LVDS (Low Voltage Differential Signaling) mode and can perform dual-channel data transmission. Data interaction is achieved inan LVDS mode, compared with a traditional local bus or network forwarding mode, higher performance is achieved, and due to the fact that LVDS data interaction is in-board differential signal transmission, the data transmission quality and stability performance are good.

The invention discloses a quantitative detection method of pneumococcus polysaccharide. According to the method, a combined saccharide prepared from cheap and easily available monosaccharides is used as a standard and replaces a purchased polysaccharide standard, standard curves are built through the combined saccharide and purchased polysaccharide standard, the same batch of pneumococcus polysaccharide samples are detected, the detection results are compared so that a correction coefficient is obtained, in later detection, a standard curve is built through the combined saccharide replacing the purchased standard saccharide, the concentration of the pneumococcus polysaccharide sample is detected, and through correction coefficient correction, the final concentration of the sample to be detected is obtained. The offset between the result and a detection result obtained by purchased standard saccharide as a standard detection sample is less than or equal to 5%. Monosaccharides in the combined saccharide are cheap and easily available, the analysis method is simple, the analysis cost is greatly reduced, the problem of the high cost of the purchased standard saccharide is solved, the experimental result is small and the quantitative detection method is easy to promote. Under appropriate operating conditions, the error is controlled within 0.4%. The quantitative detection method can be used as a quantitative detection method of pneumococcus polysaccharide.

The invention discloses a pavement colored cold filling material. The pavement colored cold filling material comprises the following raw materials in parts by weight: 4.2-4.6% of colored cold filling liquid, 88-92.7% of machine-made sand, and 2.2-2.7% of color powder. The preparation method comprises the following steps: adding machine-made sand with the particle size of 3mm in an asphalt concrete mixing plant, adding 2.7% of powdery color powder; The pavement colored cold filling material effectively solves the problems of high cost of small-area colored pavement construction and the materials for pit slot repairing, and also solves the problems that the traditional colored cold filling material cannot be insulated during transport process, so that the colored asphalt concrete can only be wasted. The cost is low, the method is benefit for construction, on-site heating is not required, the pavement colored cold filling material can be used while the bag is removed, and the usage is simple and convenient.

The invention discloses a separate type pressure-bearing anti-corrosion device which comprises a corrosion resistant material layer, a pressure-bearing material layer, a corrosive pressure medium inlet, a corrosive pressure medium outlet and a pressure balancing system, wherein an area for containing a corrosive pressure medium is formed in the corrosion resistant material layer; a separate area is formed between the pressure-bearing material layer and the corrosion resistant material layer; the pressure balancing system comprises a first pressure balancing pipe, a second pressure balancing pipe, a liquid storage device and a liquid filling pipe, wherein one end of the first pressure balancing pipe and one end of the second pressure balancing pipe are respectively communicated with the area for containing the corrosive pressure medium and the separate area, the liquid storage device is used for communicating the other end of the first pressure balancing pipe with the other end of the second pressure balancing pipe, the liquid filling pipe is communicated with the second pressure balancing pipe, and separation media which are used for separating the corrosive pressure medium from a pressure guiding medium are led into the first pressure balancing pipe, the second pressure balancing pipe and the liquid storage device. By using the separate type pressure-bearing anti-corrosion device, on one hand, the problem of high cost is solved, and on the other hand, safety accidents are avoided. Additionally, the separate type pressure-bearing anti-corrosion device has the advantages of simple structure and convenience in implementation.

The invention discloses an excess sludge pretreatment device and a pretreatment method. The pretreatment device comprises a variable-frequency power source, surface sterilization alloy corrugated plates assembly and an insulating box body; adjacent two surface sterilization alloy corrugated plates are respectively connected with positive and negative output ends of the variable-frequency power source; all surface sterilization alloy corrugated plates are arranged at equal intervals in parallel in the insulating box body; and two ends of the insulating box body are provided with pipe joints, and excess sludge enters the insulating box body from one end of the insulating box body and flows out from the other end of the insulating box body. According to the invention, through selective sterilization, the biodegradability of the excess sludge is significantly improved, and also useful facultative microorganisms in the excess sludge are reserved, and promote hydrolysis and acidification andanaerobic digestion in a subsequent hydrolysis acidification and anaerobic digestion process.