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1381results about How to "Overcome costs" patented technology

Method and apparatus for rapid prototyping using computer-printer aided to object realization

This invention applies a new computer and printer integrated technology to aid forming physical objects rapidly, and the method and apparatus are disclosed to satisfy the market requirements for a quick, reliable, safe, and inexpensive operation. The invention coverts a virtual object stored in the storage device of computer through software that slices the virtual object into many layers. The cross-section of the first layer is sent to a printer or a plotter, and the contour domain is printed or plotted by the printer or plotter. The fluid (not limited to binder) in the printer head is coated onto a layer of uniform distributed porous material which allows the powder and fluid to combine with each other; however, the combining process can be either a natural or an artificial process to enhance the binding force between the fluid and powder. After the first layer is finished, the second layer of powder is uniformly distributed on the first layer, and the contour printing process is repeated. As the printing process is repeated until all slicing layers of the model are finished, the object is stacked layer by layer sequentially. The physical object can be obtained after all the unglued powders are removed. The above-mentioned printing process not only produces monochrome objects, but also produces color objects. The machine includes components of a printer or plotter and its interface card, and x-z axis traversal driven mechanism. The operation platforms include a material supply chamber, a constructing chamber at which powder material is combined with solution, and a recycling hole. A slicing algorithm control software is used to calculate the cross-sectional contour, and the manufacture process is controlled by software and hardware interfaces.
Owner:NAT CHENG KUNG UNIV

Method for preparing and transferring graphene transparent film

The invention discloses a method for preparing and transferring a graphene transparent film. The technical problem required be solved is that impurities, cracks and bumps after the graphene transparent film is transferred are required to be reduced. The preparing and transferring method disclosed by the invention comprises the steps of: carrying out chemical vapor deposition on the graphene film on a metal substrate, coating methyl methacrylate or photoresist to form a support layer; electrolyzing the graphene film and separating the metal substrate; and coating the methyl methacrylate or photoresist on the support layer, putting the support layer into acetone solution, and attaching the graphene film to an appointed substrate. Compared with the prior art, the film composed of the graphene film and the support layer is separated from the metal substrate by an electrochemical foaming method; the graphene film is transferred to an appointed substrate and then the graphene film well contacts the plane of the appointed substrate without the cracks by spin coating for second time; the metal substrate can be repeatedly used, and the cost of preparation of the graphene transparent film is reduced; the transferred graphene film is well contacted with the substrate, and the impurities are relatively few.
Owner:BTR NEW MATERIAL GRP CO LTD

Motor function rehabilitation monitoring system based on wireless body area network

The invention discloses a motor function rehabilitation monitoring system based on a wireless body area network. The system comprises a sensor terminal node, a wireless gathering node, a wireless body area network gateway, a personal terminal, a remote medical terminal and an information feedback system, wherein the sensor terminal node comprises a medical sensor, a signal conditioning circuit, a microprocessor unit and a wireless transceiver unit which are sequentially connected, the medical sensor sends collected data into the signal conditioning circuit for preprocessing, and the wireless transceiver unit is controlled to perform wireless transmission after the data is processed by the microprocessor unit; the data collected by the sensor terminal node sequentially passes through the wireless gathering node and the wireless body area network gateway and is respectively transmitted into the personal terminal and the remote medical terminal, and the data is transmitted into the information feedback system after being processed by the remote medical terminal, and is displayed by a 3D model built through the information feedback system. The monitoring system can be used for monitoring the exercise rehabilitation situation of a patient in real time, providing reasonable guidance and advices for subsequent rehabilitation training and improving the rehabilitation training effect.
Owner:NANJING UNIV OF POSTS & TELECOMM

Method for fast constructing high-accuracy personalized face model on basis of facial images

The invention discloses a method for fast constructing a high-accuracy personalized face model on the basis of facial images, which belongs to the cross field of computer vision and computer graphics, and aims at achieving the purposes of fast reconstructing a personalized 3D geometrical facial model and a high-accuracy 2D facial texture mapping on the basis of real facial images. The method comprises the following steps: firstly, shooting five facial images from multiple angles; secondly, marking positions and corresponding relationships of forty-one characteristic points on the facial images and a neutral facial model; thirdly, aligning the projection of the neutral facial model on a virtual camera focal plane with the facial images; fourthly, carrying out hierarchical geometrical deformation on the neutral facial model to obtain the personalized geometrical facial model; and finally, synthesizing the high-accuracy facial texture mapping according to the five facial images. The face modeling method has the advantages of convenience for data acquisition, high modeling speed and modeling accuracy, and the like, and achieves higher practical values in the fields of video communication, electronic games, man-machine interaction, and the like.
Owner:HANGZHOU REALTIME DIGITAL MEDIA

Detecting method and system based on binocular camera for real-time vehicle speed

The invention discloses a detecting method and system based on a binocular camera for real-time vehicle speed. The detecting method comprises the following steps: 1) extracting a rectangular frame and a barycentric coordinate entering a visual angle range of the binocular camera, and tracking a target vehicle; 2) recording the position and the time of a vehicle entering or leaving the visual angle range of the binocular camera; 3) pre-building a parallax depth chart of the binocular camera and a proportional relation chart of perpendicular lengths from viewpoints at the depths of the binocular camera to an optical axis and the pixel count of imagery; 4) acquiring parallax of the vehicle entering the viewpoints of the visual angle range of the binocular camera and leaving the viewpoints of the visual angle range of the binocular camera to obtain the perpendicular lengths from the viewpoints of an entering position or a leaving position of the vehicle to the optical axis; 5) calculating a traveling distance between the viewpoints of the entering position and the leaving position of the vehicle, and obtaining the vehicle speed of the vehicle according to the traveling distance and the time of the vehicle. The detecting method and system have the advantages that the speed measuring precision is high, and speed measurement can be performed on multiple vehicle objectives on multilane at the same time.
Owner:SOUTH CHINA UNIV OF TECH

Encapsulation method for top radiation organic EL part

The invention belongs to the organic electroluminescence field, in particular to a packaging method for a top-emitting organic electroluminescent device, comprising the packaging to the top-emitting organic electroluminescent device having an upright structure and an inverted structure. A layer of organic or inorganic material which has a thickness of 10nm to 100nm and has high transmittance in a visible light region and is also easy of thermal evaporation deposition is coated on a top electrode of the top-emitting organic electroluminescent device to serve as a protective layer of the device, then a luminous zone of the device is coated with package resin, and finally a transparent packaging cover plate is pressed thereon. The method improves the packaging tightness of the device, avoids the damage to the device caused by friction, and overcomes the disadvantages of complicated operational procedures, long solidification time and high costs of the previous packaging process, and the method has advantages of simple process, short solidification time, low costs and good barrier property of oxygen and vapor, and is widely applied in the aspect of packaging to electronic and electrical devices such as organic electroluminescent devices (OLED).
Owner:JILIN UNIV

Double side flexible copper coated board and manufacturing method thereof

The invention relates to a double-sided flexible copper clad laminate and a production method thereof, the double-sided flexible copper clad laminate comprises a single-sided copper clad laminate, an adhesive layer which is coated on the single-sided copper clad laminate and the other copper foil or the other single-sided copper clad laminate which is coated on the adhesive layer by pressing, the single-sided copper clad laminate comprises one copper foil and a polyimide layer which is coated on the copper foil, wherein, the polyimide layer and the adhesive layer are adjacently arranged. The production method comprises the following steps: the copper foil is provided and polyamide acid and an adhesive are prepared; the polyamide acid is coated on the copper foil to prepare the single-sided copper clad laminate; the adhesive is coated between the single-sided copper clad laminate and the copper foil or the other single-sided copper clad laminate and carrying out the lamination to prepare the double-sided flexible copper clad laminate. The performances of size stability, folding resistance, anti-aging property, and the like of the double-sided flexible copper clad laminate are higher than the double-sided copper clad laminate which is produced by a traditional three-layer method, the appearance quality is better than the two-layer double-sided copper clad laminate produced by a lamination method, and the double-sided flexible copper clad laminate simultaneously has the low-cost advantage, thereby facilitating the mass production.
Owner:GUANGDONG SHENGYI SCI TECH

Integral forming method for thin-walled titanium alloy part with irregularly-shaped curved surface and die

InactiveCN102672435AOvercoming shape constraintsOvercome the processShaping toolsLaser beam welding apparatusTitanium alloyMetal
The invention belongs to the field of sheet metal and welding processing, and relates to an integral forming method for a thin-walled titanium alloy part with an irregularly-shaped curved surface. The integral forming method aims at overcoming the defects that the shape of parts processed through the prior art is limited or the procedure and the cost are higher, and effectively ensuring the precision forming of a thin-walled component with an irregular shape. The integral forming method comprises the steps as follows: a parting surface is determined; blanking is carried out; in the preforming step, a plate is bent from a flat into a circular arc through a bending die or a bending machine; welding is carried out; in the hot shaping step, a hot shaping die is put in the inner part of a part that is processed through the assembly welding under the ordinary temperature, and the part is supported tightly due to the dead weight of the die and is heated in a hot shaping machine; and in addition, a pressing machine applies pressure to the hot shaping die when the part is heated until material is softened, so as to enable the part to reach the needed size. The integral forming method comprehensively utilizes the advantages of various processes, can obtain the large-sized thin-walled titanium alloy part with the irregularly-shaped curved surface through only two weld joints, and achieves higher surface quality of the part.
Owner:BEIJING HANGXING MACHINERY MFG CO LTD

Parking space detection method and system thereof

The invention discloses a parking space detection method and a system thereof and relates to a wireless sensor network technology. The parking space detection system disclosed in the invention comprises a data management center and a parking space detection node apparatus, wherein the data management center is used to send data to the parking space detection node apparatus, receive a determination result of whether there is a vehicle parked in a parking space uploaded by the parking space detection node apparatus and carry out management on the parking space according to the received determination result; the parking space detection node apparatus is used to receive the data sent by the data management center, determine a signal strength indicator (RSSI) value according to frequency spectrum information of the received data, combines the current determined signal strength indicator value and a historical record data updating RSSI threshold, compares the current determined signal strength indicator value with the updated RSSI threshold, determine whether there is the vehicle in the parking space and upload the determination result to the data management center. The invention also discloses a parking space detection method. By using technical scheme of the invention, the parking space can be accurately measured and cost is reduced.
Owner:BEIJING LOIT TECH

Biology base polymer aerogel oil absorption material and preparation method thereof

The invention discloses a biology base polymer aerogel oil absorption material. The oil absorption material is prepared by the following steps: at first, crosslinking biology base polymers by a crosslinking agent, to obtain a precursor liquid, then freeze-drying the precursor liquid to obtain aerogel, and finally grafting silane onto the aerogel surface to obtain the hydrophobic biology base polymer aerogel oil absorption material. The density of the oil absorption material is 3.8 to 23.1 kg/m3. The water contact angle is at least 117.8 degrees. The adsorption capacities on gasoline, paraffin oil, chloroform, and crude oil are 30.5-109.0 g/g, 33.2-131.2 g/g, 58.2-163.0 g/g, and 24.7-95.8 g/g. After 50 times of gasoline adsorption-extrusion circulation, the retention rate of adsorption capacity is 43 to 99%. The disclosed aerogel oil absorption material has the advantages of large oil absorption capacity and high oil absorption efficiency. Moreover, the oil absorption material can be repeatedly used by simply extruding the oil absorption material, while a high retention rate of adsorption capacity can be maintained. At the same time, the raw material sources are wide, the raw materials are cheap and easily available, the preparation is simple, the technology is matured, the method is environment-friendly, and the requirements of sustainable development can be met.
Owner:SICHUAN UNIV

Optical freeform surface interference detection system

The invention discloses an optical freeform surface interference detection system. A point light source array is adopted to generate a multi-field-of-view sloped wavefront to illuminate a measured optical freeform surface, the point light sources located on the optical axis are always lit up as reference light, and according to the phase-shifting interferometry, subregion wavefront data are recovered from a multi-field-of-view interferogram; a standard spherical surface is used for calibrating the positional relation between CCD (Charge Coupled Device) pixels and the multi-field-of-view interferogram, the position of the multi-field-of-view interferogram is shifted when the optical freeform surface is measured, and wavefront slope information is obtained from the offset; and according to the slope information and multi-field-of-view subregion wavefront data, the surface form information of the measured surface is reconstructed. A controllable point light source array-lighting scheme is generated according to the characteristics of the measured surface, and the system can cover a variety of test objects (convex-concave aspheric surfaces and freeform surfaces). The invention overcomes the defects of simplicity and high cost of the conventional freeform surface detection method, the defect of great error caused by the non-common path in the conventional detection method and the defect of high displacement precision requirement of the subaperture method.
Owner:NANJING UNIV OF SCI & TECH

Multi-micronano detector networking joint demonstration verification system based on intelligent mobile robot

The invention relates to a multi-micronano detector networking joint demonstration verification system based on an intelligent mobile robot, comprising a ground synergic control workstation, a synergic control model library, a satellite wireless communication equipment simulator, an intelligent mobile robot, a GPS (Global Positioning System) receiver, video navigation equipment and a display terminal, wherein the ground synergic control workstation controls the synergetic work and the formation transform and maintenance of the whole system; the synergic control model library provides a control algorithm and a control model for the ground synergic control workstation; the satellite wireless communication equipment simulator provides a communication link between satellites and the workstation; the intelligent mobile robot as a carrier of the GPS receiver and the satellite wireless communication equipment simulator is controlled by the control workstation to move and used for simulating the relative position change among the satellites; the GPS receiver and the video navigation equipment realize the relative navigation among the satellites; and the display terminal displays a networking joint verification result in real time. The invention can effectively decrease the test cost of a multi-micronano detector networking detection system, shortens a research and development period and has important engineering application values.
Owner:BEIHANG UNIV

Method for three-dimensional (3D) printing of restoring implant by bony articular surface reconstruction

The invention provides a method for three-dimensional (3D) printing of a restoring implant by bony articular surface reconstruction. First three-dimensional reconstruction of a bone articular model is performed, and then virtual restoration reconstruction of bony articular reconstruction, reversal design of a bone articular defect area restoring implant and 3D printing forming of a bone articular defect restoring implant are performed. Modeling software is utilized to copy a normal side bone articular three-dimensional model to an affected side in a sagittal plane symmetry mode, so as to obtain a complete structure reference model before the occurrence of fracture of the affected side; 3D printing pro-processing software is utilized to support and generate the model, a corresponding forming material and a quick forming process are selected to perform 3D printing, a support structure of the implant is further removed, and finally an individual bone articular reconstruction restoring implant is obtained. The individual reversal design is performed according to the symmetry morphological structure of the human body, the bony articular surface reconstruction defect restoring implant is quickly formed by combination with a 3D printing technology, not only can a bone articular defect restoring reconstruction be greatly improved, but also the design and manufacturing efficiency of the implant is effectively improved, the cost is reduced, and customized design and individual-based treatment are performed.
Owner:SOUTHERN MEDICAL UNIVERSITY

Double-station reciprocating rotary type injection stretch blow hollow forming machine

The invention discloses a double-station reciprocating rotary type injection stretch blow hollow forming machine which comprises a host machine and a mould. The host machine comprises a machine frame, a worktable panel, an injecting system, an injection molding and mould locking system, a blow molding and mould closing system, and a stretching device; wherein, the worktable panel is horizontally fixed on the machine frame, the injecting system is horizontally arranged on the machine frame, the injection molding and mould locking system is vertical to the worktable panel, the blow molding and mould closing system is horizontally arranged on the worktable panel, and the stretching device is vertically arranged. The injection molding and mould locking system comprises an upper mould plate, a lower mould plate, a mould locking oil cylinder, a guide post, a rotary driving mechanism, a rotary disc and a core-pumping oil cylinder. The lower mould plate is connected with the upper mould plate by the guide post which vertically penetrates through the worktable panel, the mould locking oil cylinder is fixed below the worktable panel, the piston rod end of the mould locking oil cylinder is connected with the lower mould plate, the rotary disc is arranged at the lower end face of the upper mould plate, and the rotary driving mechanism which is arranged at the upper part of the upper mould plate is connected with the rotary disc in a rotating manner. The rotary disc is driven by the rotary driving mechanism to drive a mouth module I and a mouth module II to carry out reciprocating rotation at 180 degrees in an interval manner, so as to finish station exchanging between blank injection and stretching blow molding, thereby realizing that the two functions of blank injection and stretching blow molding can be finished at the same time.
Owner:柳州市精业机器有限公司
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