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1993results about How to "Meet quality requirements" patented technology

Method for acquiring range image by stereo matching of multi-aperture photographing based on color segmentation

InactiveCN101720047AEliminate mismatch pointsImproved Parallax AccuracyImage analysisSteroscopic systemsParallaxStereo matching
The invention discloses a method for acquiring a range image by stereo matching of multi-aperture photographing based on color segmentation. The method comprises the following steps of: (1) carrying out image correction on all input images; (2) carrying out the color segmentation on a reference image, and extracting an area with consistent color in the reference image; (3) respectively carrying out local window matching on the multiple input images to obtain multiple parallax images; (4) removing mismatched points which are generated during the matching by applying a bilateral matching strategy; (5) synthesizing the multiple parallax images into a parallax image, and filling parallax information of the mismatched points; (6) carrying out post-treatment optimization on the parallax image to obtain a dense parallax image; and (7) converting the parallax image into a range image according to the relationship between parallax and depth. By acquiring range information from multiple viewpoint images and utilizing image information provided by the multiple viewpoint images, the invention can not only solve the problem of mismatching brought by periodic repetitive textural features and shelter and the like in the images, but also can improve matching precision and obtain an accurate range image.
Owner:SHANGHAI UNIV

Intelligent purification cabinet type fresh air ventilator

The invention discloses an intelligent purification cabinet type fresh air ventilator. The intelligent purification cabinet type fresh air ventilator comprises a controller and a VOC (Volatile Organic Compounds) concentration sensor connected with the controller, wherein the VOC concentration sensor is arranged in an air return space; the controller is used for adjusting operating air velocities of an air blower and an exhaust fan in real time according to VOC concentrations detected by the VOC concentration sensor at a fixed time interval. Furthermore, the controller is also used for automatically obtaining outdoor air quality indexes periodically, and controlling the air blower and the exhaust fan, and when the outdoor air quality levels are serious pollution and severe pollution, the air blower and the exhaust fan are powered off. According to the intelligent purification cabinet type fresh air ventilator, the VOC concentration sensor, a humidity sensor and a plurality of temperature sensors are arranged inside a shell, so that the intelligent control of the complete machine is realized. The structure inside the shell is reasonably designed, and a three-stage purification device and a negative ion generator are arranged in an air supply channel, so that the quality demand on indoor air is met, and the purification efficiency of fresh air is ensured.
Owner:北京环都拓普空调有限公司

Metal wire rod precision alignment cutting device and method

The invention discloses a metal wire rod precision alignment cutting device and a method. The device comprises a double-layer machine frame. A front end guiding tank, a revolving alignment tank, a traction mechanism, a back end guiding tank, a cutting mechanism and a machinery sizing mechanism are arranged on the top portion of the double-layer machine frame. The revolving alignment tank comprises a revolving alignment straight tank support seat, an alignment guiding tank, a plurality of alignment modules and a protection cover. The traction mechanism comprises a traction mechanism support seat, a servo motor, a driving friction wheel and a driven friction wheel. The cutting mechanism comprises a cutting wheel support frame, an air cylinder, a cutting wheel motor and a slice-shaped cutting wheel. The machinery sizing mechanism comprises a horizontal scale plate, a pressure sensor, an infrared transmitting sensor and an infrared receiving sensor. The method includes the steps that the metal wire rod enters the revolving alignment tank through a front end guiding rank. The metal wire rod is alignmented, tracted, cut and prepared and enters the next working circulation. The metal wire rod precision alignment cutting device and the method is high in automatic degree. The shape of the cut metal line segment and the size precision are high. The cutting opening is smooth, free of deckle edge and free of splitting off. The metal wire rod precision alignment cutting device and the method are strong in practicality.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Cooling device of fracturing truck

The invention provides a cooling device of a fracturing truck. A support of the integrated cooling device of the fracturing truck is connected with a connection base and a chassis crossbeam connection frame through a shock pad by means of a bolt, a control device and a lubrication oil tank provided with a lubrication oil temperature sensor are arranged below the chassis crossbeam connection frame, a fuel tank provided with a fuel temperature sensor is arranged at the lower portion a truck crossbeam, the upper front portion of the truck crossbeam is provided with a hydraulic oil tank provided with a hydraulic oil temperature sensor, an electrically-controlled volume adjustable hydraulic pump is arranged at the lower portion of the hydraulic oil tank, the electrically-controlled volume adjustable hydraulic pump is connected with an engine provided with a water temperature sensor, and the other side of the engine is provided with a transmission tank provided with a transmission tank oil temperature sensor. A horizontal heat sink is respectively provided with an engine water-cooling device, a power end cooling device, a hydraulic cooling device, a fuel cooling device and a transmission tank cooling device. According to the cooling device of the fracturing truck, a horizontal structure and a concentrated heat dissipation mode are adopted, a pipeline of a cooling system is arranged reasonably, and the requirements for the weight and installation space of vehicle-mounted fracturing equipment are met.
Owner:SJ PETROLEUM MACHINERY CO LTD SINOPEC

Discrete manufacturing process product quality information management system based on RFID (radio frequency identification)

The invention discloses a discrete manufacturing process product quality information management system based on RFID (radio frequency identification). The system provided by the invention is characterized in that a first handset, a label printer, an warehousing access control scanning reader, a second handset, a third handset, an ex-warehouse access control scanning reader, a warehouse management sub-system, a monitoring computer and a database are used for completing the warehouse management; a first fixed reader-writer, a fourth handset, a second fixed reader-writer, a fifth handset, an assembling management sub-system, the monitoring computer and the database are used for completing the assembling management; a sixth handset, an after-sale management sub-system, the monitoring computer and the database are used for completing the after-sale management; the product quality information management system is capable of transmitting the quality information between a planning level and a workshop level in an enterprise; and the top management can know the production progress and product quality in real time, can accurately position faulty products, rapidly and accurately find a reason causing the quality defect. The invention further discloses a product quality information management method.
Owner:WUHAN UNIV OF TECH

Method for preparing congou black tea from anji white tea

The invention relates to a black tea preparing method and particularly relates to a method for preparing congou black tea from anji white tea. The method sequentially comprises the following steps: picking based on a one-bud and one-leaf standard; withering; rolling; fermenting: arranging the rolled leaves to be fermented into a bamboo basket, controlling the leaf stacking thickness to be 8-10cm, uniformly spreading, and layering the leaves on a fermentation rack; fermenting by using a tea fermenting machine, controlling the air temperature at 35-40 DEG C, keeping the leaf temperature 30-32 DEG C, the relative humidity over 95% and sufficient oxygen supply, recording the fermentation time beginning from the rolling time, and controlling the fermentation time to be 5.5-6.0h. At the later period of fermentation, the temperature of a fermentation chamber is lowered and is controlled at 30-35 DEG C, so that the excessive fermentation is avoided; the moderate fermentation is carried out, and the fermented leaves are removed from the fermentation chamber, subjected to heat radiation, cooled and dried. By using the method, the anji white tea can be prepared into the congou black tea which is dark in luster, compact in strip, sweet and durable in fragrance, red bright in liquor color as well as pure, mild and fresh in taste.
Owner:浙江安吉宋茗白茶有限公司

Integral recycling method of lithium iron phosphate positive electrode material

The invention provides an integral recycling method of a lithium iron phosphate positive electrode material. The integral recycling method comprises the steps of (1) preparing paste from the lithium iron phosphate positive electrode material, mixing the paste and an acid for leaching reaction, and performing liquid-solid separation to obtain a leaching liquid and residue; (2) adjusting a pH valueof the leaching liquid to 1.5-3, and performing solid-liquid separation to obtain iron phosphate and a deironing acid liquid; (3) adjusting a pH value of the deironing acid liquid to 5-8, and performing solid-liquid separation to obtain a precipitant of aluminum and iron and a lithium-containing purification liquid; and (4) and performing post-treatment on the purification liquid to obtain a lithium product and a precipitation mother liquid. By the method, the recycling rates of lithium, iron and phosphate all are larger than 95wt%, the purity of the obtained lithium carbonate product is larger than 98.5wt%, the impurity content conforms to the requirement of GB/T11075-2013, the iron phosphate product conforms to the quality requirement (HG/T 4701-2014) of battery-level iron phosphate, theresidue discharging quantity is reduced by 85wt%, the flow is simple, and the process is clean.
Owner:北京中科百特科技有限公司

Automatic segmentation method based on self-adaptive external force level set for magnetic resonance images (MRIs) of soft tissue and realization method thereof

The invention provides an automatic segmentation method based on self-adaptive external force level set for magnetic resonance images (MRIs) of soft tissue and a realization method thereof. The automatic segmentation method comprises the steps that object region tissue satisfying a gray threshold is selected under the circumstance of interactive operation; gradient information of a smoothened image is calculated; a curve evolution guiding function is set; a boundary stopping function is set; and if an evolutional curve exceeds the boundary of an object region, parameters of the boundary stopping function are adjusted, then curve evolution is re-conducted and the iteration is conducted again until the evolutional curve is converged within the boundary of the object region. The automatic segmentation method has the characteristics of high real-time performance, high operation efficiency, capability of segmenting multiple discrete regions at the same time, capability of accurately recognizing fuzzy boundaries of the soft tissue of a human body, high segmentation precision, clear image detail characteristics, high intelligent degree, no need of manual intervention, stable and reliable operation, and the like.
Owner:SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA

Sedan gear-box axle piece cold finish-forging formation method and die

The invention relates to a cold precision forging and forming method for car gear-box shafts and a die thereof, which belong to a metallic material plastic forming method and a die, and solve the problems that the prior process material has low utilization rate, dimensional precision and surface quality and has the strength incapable of meeting requirements. The method comprises the steps of preparing materials, determining the process, blank treatment and progressive forming. The die comprises an upper die holder and a lower die holder, an upper ejection device and a lower ejection device, five pairs of die units and fastening devices thereof; each pair of die units comprises an upper die and a lower die; the upper die consists of an upper sleeve, an upper shim plate, an upper support cylinder, an upper cushion cover, an upper concave die and an upper pressure ring; and the lower die consists of a lower sleeve, a lower shim plate, a lower support cylinder, a lower cushion cover, a lower concave die and a lower pressure ring. The method has the advantages of reasonable and stable process flow and high production efficiency; the die has the advantages of convenient manufacture, installation, use and maintenance, reliable work and long service life; and the dimensional precision, the surface glossiness and the strength of the produced shafts are improved.
Owner:HUAZHONG UNIV OF SCI & TECH

Test device and test method for testing delivery capacity of steam security valve

The invention relates to a test device and a test method for delivery capacity of a steam security valve based on system dryness control. The test device is mainly composed of a concurrent boiler, a steam separator, an energy storage and a test vessel through connecting in sequence. The test method for the delivery capacity of the steam security valve includes: regulating the opening degree of a regulating valve on a steam header to stabilize the steam pressure at a boiler outlet to avoid the unbalance between the steam supply amount of the boiler and the pressurization desired steam amount of the energy storage when testing different sizes of security valves; regulating the opening degree of a regulating valve between the energy storage and the test vessel to realize the stable discharge of the measured steam security valve; when testing the delivery capacity of the security valve, enabling the boiler to continuously supply gas for the energy storage system under pressure control so as to maintain enough pressure for the energy storage in testing, and accordingly the energy storage volume is reduced, and the device constructing cost is lowered; regulating the load of the concurrent boiler to change the overheat degree of the steam at the boiler outlet so as to meet the steam quality requirement in testing the delivery capacity. The test device and the test method have advantages of strong operating flexibility, stable system running and high testing precision.
Owner:EAST CHINA UNIV OF SCI & TECH

Torch-flame cutting process for super-thick steel plates

The invention discloses a torch-flame cutting process for super-thick steel plates, which includes steps of utilizing a numerical-control torch-flame cutting machine for torch-flame cutting of the super-thick steel plates, placing a to-be-cut steel plate on the numerical-control torch-flame cutting machine while keeping the surface of the to-be-cut steel plate perpendicular to a cutting torch of the numerical-control torch-flame cutting machine and keeping the distance from the cutting torch to the surfaces of the to-be-cut steel plates ranging from 10mm to 30mm; setting cutting speed, preheating time, preheating oxygen pressure, cutting oxygen pressure and dimethylmethane pressure of the numerical-control torch-flame cutting machine; regulating flame strength of the cutting torch by utilizing the right-angle position formed between the surface of the to-be-cut steel plate and the lateral side thereof as an initial cutting point, enabling the secondary flame to be longer enough to reach the bottom of the to-be-cut steel plate, preheating the initial cutting point for a preset preheating time before initial cutting, and then turning on cutting oxygen, moving the cutting torch forwards when slag flows downwards along edges, and finally increasing moving speed of the cutting torch when the slag is discharged from the bottom until completing the normal cutting operation. The torch-flame cutting process for the super-thick steel plates is capable of guaranteeing quality of cut surfaces, is simple and stable, is safe in use and meets production requirements.
Owner:CITIC HEAVY INDUSTRIES CO LTD
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