38results about How to "Lower limit requirement" patented technology

The invention, which belongs to the technical field of remote sensing application, particularly relates to a high-resolution-image-based regional adaptive cultivated land extraction method. The method comprises: pretreatment is carried out on data; multi-scale segmentation is carried out on a high-resolution image, an optimal segmentation scale of cultivated land is determined, and an optimal segmentation layer of cultivated land classification is obtained; a plurality of cultivated land sample sets are constructed at the optimal segmentation layer to form an attribute feature space of each cultivated land sample set; optimal image feature space selection is carried out; according to the optimal image feature spaces, fuzzy classifier of cultivated land extraction are constructed; and on the basis of the cultivated land sampling sets and the fuzzy classifiers, cultivated land extraction is carried out. According to the invention, automatic identification of a cultivated land object is realized by combining the cultivated land sample sets and the fuzzy classifiers. The uniformity of the segmented object of the high-resolution image and the extraction precision of the fuzzy classifier are improved by selecting the optimal segmentation scale and the different cultivated land sample sets; and on the basis of construction of the cultivated land sample sets, the restriction requirements on the time phase and the number of the data source are reduced.

The invention relates to a sports field, in particular to an on-line and off-line small-scale football match achieving method. The on-line and off-line small-scale football match achieving method is characterized by at least comprising the following steps. A matching field is set up and a plane field provided with two goals. A terminal device is arranged in the field and capable of recording match data in real time, carrying out statistics on data results of a football match, being connected with the internet and uploading the results. A server is arranged and provided with a storage module, a wireless transmission module and an application program which can be downloaded and edited. The wire transmission module is connected with the storage module and with the terminal device through the internet. The application program at least comprises an enrolling device. The on-line and off-line small-scale football match achieving method has the advantages that a novel football match can integrate the field, the football match and network interaction.

The invention discloses a powdered activated carbon regeneration system and method for reducing powder pollution. The system is composed of a carbon pulp dehydration device, a dehydration and granulation integrating device, a powdered activated carbon regeneration multi-section furnace and a grinding device; after powdered activated carbon used for adsorbing sewage is adsorbed to be saturated, thepowdered activated carbon is firstly conveyed into the dehydration device to be dehydrated and the moisture content of carbon pulp is reduced to 50 percent to 60 percent; then the carbon pulp is conveyed into the dehydration and granulation integrating device and is dehydrated again until the moisture content range is 25 percent to 35 percent; the powdered activated carbon in the carbon pulp is granulated and molded under the condition that an adhesive is added and then is discharged in a spherical grain form; then the spherical grain activated carbon is conveyed into the powdered activated carbon regeneration multi-section furnace and powdered activated carbon regeneration is carried out under the action of high temperature of 700 DEG C to 850 DEG C; after being cooled, the spherical grain activated carbon is conveyed into the grinding device; the spherical grain activated carbon is ground into the powdered activated carbon. By adopting the powdered activated carbon regeneration system and the method for reducing the powder pollution, dust raising in regeneration and conveying processes is avoided and the environment pollution is reduced; meanwhile, the loss of the activated carbon is reduced and the regenerated activated carbon can be completely recovered to original adsorption performance.

The invention discloses an Android software repackaging detection method based on interface icon characteristics, which comprises the following steps: S1, dynamically executing an Android application,screening each interface, and dumping all icons of the interface; S2, classifying the dumped icons according to styles to obtain an icon-style-interface tree, and taking the icon-style-interface treeas an application software birthmark; S3, calculating similarity of the icon-style-interface tree of to-be-compared Android application pairs, when the similarity of a pair of the icon-style-interface tree is greater than a threshold value, the two corresponding applications are judged to be repackaged. According to the Android software similarity comparison method, the visual feature, namely theicon, is combined with the strategy of dynamically executing the Android application, so that the resistance to two anti-detection modes, namely code confusion and encryption, is improved, and the repackaging detection accuracy of the Android application is improved.

The invention provides a device enabling a suction type nitrogen and hydrogen leakage detection instrument to be free of influences by the environmental background. The device comprises a switch valve, a gas storage tank, a flow limiting valve, a cover box and the suction type nitrogen and hydrogen leakage detection instrument, and the switch valve, the gas storage tank, the flow limiting valve, the cover box and the suction type nitrogen and hydrogen leakage detection instrument are sequentially connected in series through a gas circuit. A part of or all parts of a detected object are located in the cover box, and a pressure controller is connected between the switch valve and the gas storage tank. The device is used for assisting the suction type nitrogen and hydrogen leakage detection instrument to conduct leakage detection, the influences by the environmental background on detection are avoided, stability, validity and accuracy of the suction type nitrogen and hydrogen leakage detection instrument are improved, shortcomings of the suction type nitrogen and hydrogen leakage detection instrument are overcome, and limitation requirements of the suction type nitrogen and hydrogen leakage detection instrument for the environmental background in a user site are reduced.

The invention discloses a scissor type forklift walking mechanism for secondary lifting and belongs to the field of machinery maintenance. The scissor type forklift walking mechanism comprises a fixed base plate, a movable base plate, vertical plates, a short suspension plate and a roller mechanism. One end of the movable base plate is connected inside the fixed base plate in a sleeve mode; the vertical plates are vertically arranged on the other end surface of the movable plate, the top ends of the vertical plates are fixedly provided with the short suspension plate, and the cross section of the combination of the vertical plate and the short suspension plate is in the shape of an inverted U; the roller mechanism comprises a guide sleeve fixed onto the vertical plates, the guide sleeve is fixed on one side of the short suspension plate, the lower end of the guide sleeve is fixedly provided with a spring, the inside of the guide sleeve is provided with a guide rod, the lower end of the guide rod is provided with a support rod, and the support rod is arranged inside the spring and fixedly connected with a base; the upper end of the guide rod is horizontally provided with a rotating shaft, and the rotating shaft is provided with a roller. According to the scissor type forklift walking mechanism, one end of the movable base plate is connected inside the fixed base plate in the sleeve mode, so that length adjustability of the base plates can be achieved, and further the scissor type forklift walking mechanism can lift automobiles of different widths. Meanwhile, by means of the roller mechanism, the scissor type forklift walking mechanism can avoid breakage of a roller shaft due to overlarge stress.

The invention discloses a multifunctional mathematics teaching display board, mainly belonging to the technical field of teaching aids. The display board comprises a bottom plate, wherein a stand column is arranged on the bottom plate, first display plates are arranged on the two sides of the stand column respectively, the first display plates are rotationally connected with the stand column, thefirst display plates can rotate on the bottom plate, second display plates are arranged on the first display plates, and the second display plates can move within a certain range along the first display plates. The display board has the advantages that students at remote positions can see contents on the display board clearly and conveniently, the area of the display board is well utilized, the students are prevented from seeing the contents just written by teachers when going to a desk for retelling, and better teaching effects and teaching quality can be achieved.

The invention relates to a preparation method of citron daylily and Chinese yam cakes. The preparation method takes citron daylily, Chinese yams and flour as main raw materials and comprises the following steps: pulping the Chinese yams; adding the chopped citron daylily and the flour; then adding auxiliary materials including table salt, baking soda and the like; and baking and curing, cutting, sealing and packaging, and carrying out radiation and sterilization to obtain a finished product. The guarantee period of the product exceeds 6 months at a room temperature; the product is golden yellow and bright, is fragrant and flexible and has abundant nutrients; no fat is added and the product has certain health-care value; standardized and large-batch production of the product can be realized and the raw materials are not wasted; and a brand new way is provided for processing and utilization of agricultural products including the citron daylily, the Chinese yams and the like.

The invention discloses an optical illumination system for linear CCD scanning. The optical illumination system at least comprises a first linear light source, a second linear light source, a third linear light source, a spectroscope, a second Fresnel lens, a third Fresnel lens, a second retroreflector and a third retroreflector. The first linear light source, the second linear light source and the third linear light source are arranged above a detected object and on the front side face and the rear side face of the detected object respectively, and are all horizontally arranged, the right upper surface, the front side face and the rear side face of the detected object are irradiated at the same time, and shadowless lighting is achieved. The first linear light source, the second linear light source and the third linear light source are all formed by matching low-power halogen lamps with optical fibers. The optical illumination system is high in uniformity, large in incident angle and capable of achieving stereoscopic illumination of the front face and the side faces on the detected object, the reflected light of a scanned object directly enters a CCD to be imaged, no optical filter is needed, the resolution range is wide, the limiting requirement for scanned materials is low, the light path structure is simple, energy consumption is low, the energy rate is high, and the service life is long.

The invention belongs to the technical field of remote sensing applications, and relates to a region-adaptive cultivated land extraction method based on high-resolution images, including: preprocessing data; performing multi-scale segmentation on high-resolution images, and determining the optimal segmentation scale of cultivated land , to obtain the optimal segmentation layer of cultivated land classification; construct multiple cultivated land sample sets in the optimal segmentation layer to form the attribute feature space of each cultivated land sample set; select the optimal image feature space; construct the cultivated land according to the optimal image feature space The extracted fuzzy classifier; based on the cultivated land sample set and the fuzzy classifier, the cultivated land is extracted. The invention realizes the automatic recognition of the cultivated land object through the combination of the cultivated land sample set and the fuzzy classifier. By selecting the optimal segmentation scale and the attribute feature space of different farmland sample sets, the homogeneity of the segmentation objects of high-resolution images and the extraction accuracy of the fuzzy classifier are improved; Requirements for phase and quantity restrictions.

The invention provides an artificial whole hip joint prosthesis having an axial limiting and anti-dislocation structure. The artificial whole hip joint prosthesis comprises an acetabular prosthesis, an inner liner and a caput femoris prosthesis. The inner liner is arranged in a groove of the acetabular prosthesis, and the caput femoris prosthesis is arranged in a groove of the inner liner. The artificial whole hip joint prosthesis further comprises an axial limiting and anti-dislocation structure, the axial limiting and anti-dislocation structure penetrates the central portions of the acetabular prosthesis, the inner liner and the caput femoris prosthesis to connecting the acetabular prosthesis, the inner liner and the caput femoris prosthesis together to form a whole body, and the length and the elasticity of the whole body can be adjusted. The artificial whole hip joint prosthesis having the axial limiting and anti-dislocation structure can prevent the caput femoris prosthesis from coming out of the acetabular prosthesis through an axial drawing effect, complication, generated after total hip replacement arthroplasty, of dislocation of a hip joint can be reduced even eliminated, the activity of a postoperative hip joint can be improved, and limit on postoperative patient's daily movement is less. The artificial whole hip joint prosthesis having the axial limiting and anti-dislocation structure is simple in structure designe, convenient to operate and easy to dismount, and the artificial whole hip joint prosthesis can be conveniently taken out when the artificial whole hip joint prosthesis loosens or is overhauled.

The invention relates to a device and method for measuring the loading depth of functional groups on the surface of pores of modified porous materials. instrument, the inlet of the gas mixing chamber is connected to the high-purity nitrogen generator and the gas generator to be tested, the two ends of the packed column are blocked and inserted into a conduit for ventilation or exhaust, and the packed column is provided with a bypass in parallel tube, and the inlet pipe of the packed column is provided with a valve, and a third flow regulator is provided in front of the gas mixing chamber and the packed column. Compared with the prior art, the equipment required by the present invention is common, the operation steps are simple, the time and cost of measurement are greatly reduced, and there are few restrictions on porous materials and modified functional groups. It is suitable for most surface functional groups modified porous Measurement Characterization of Materials.

A wire saw (100) comprises an installation seat (10), a driving assembly (20), a travelling cutting unloading assembly (30) and a wire collecting assembly (40). The travelling cutting unloading assembly (30) comprises a travelling support (31), a lifting mechanism (32), a diamond string bead wire (33), at least one driven wheel (34) and an unloading mechanism (35), the travelling support comprises a rotary arm (310) and a first supporting arm (311) rotatably connected with the rotary arm (310), and the unloading mechanism comprises a restoring piece (351); and one end of the restoring piece (351) is connected to the travelling support (31), and the other end of the restoring piece (351) is connected to rotary arm (310). When external force acts on the driven wheels (34), the restoring piece (351) is driven by the rotary arm (310) to rotate from an initial area to a rotary area to remove acting force on the driven wheels (34) through the unloading restoring piece (351), the rotary arm (310) is returned to the initial area through the unloading restoring piece (351), and in this way, the problem that components of the wire saw (100) are damaged due to falling off of a cutted object is solved.

The invention discloses a scissor type lifter walking supporting mechanism, and belongs to the field of machinery maintenance. The scissor type lifter walking supporting mechanism comprises a vertical plate, hanging plates, idler wheels and elastic supporting mechanisms, wherein identical hanging plate grooves are formed in the two ends of the vertical plate; the elastic supporting mechanisms are fixedly arranged at the bottom ends of the hanging plate grooves; each elastic supporting mechanism comprises a sleeve rod, a sleeve and a spring, each sleeve is fixedly connected with the bottom end of the corresponding hanging plate groove, each sleeve rod is sleeved by the corresponding sleeve, the upper end of each sleeve rod is fixedly connected with the lower end of the corresponding hanging plate, each sleeve rod and the corresponding sleeve are respectively arranged inside each spring, and the two ends of each spring are fixedly connected with the bottom end of the corresponding hanging plate groove and the lower end of the corresponding hanging plate respectively; the same idler wheels are further arranged at the two ends of the vertical plate. The adjustability of relative positions of two scissor type lifters can be realized through the arranged elastic supporting mechanisms, so that the application range of the lifters is improved, the springs can be prevented from being damaged by elastic limit repeatedly, and the service life of the whole device is prolonged. The scissor type lifter walking supporting mechanism further has the advantages of simple structure, reasonable design and easy manufacture.

The invention discloses a finger vein identification device and an identification method thereof, comprising a sealed cavity and a controller, a plurality of near-infrared light-emitting diodes are arranged above the sealed cavity, a vein identification area is arranged on the sealed cavity; A shading plate is provided; an optical filter is arranged below the vein identification area; an induction circuit is arranged on the vein identification area, and the induction circuit is connected with the controller; more than one camera is provided on the sealed cavity; the number of cameras is Three; there is a memory in the controller; the identification method is to number the three finger contour images captured by the three cameras; the second step: measure the width of the three finger contour images respectively and compare them , the picture corresponding to the maximum value is the best image; the feature code of the best image is extracted, and the feature code is stored or compared with the stored information. The present invention reduces the limit requirement of placing fingers horizontally, and improves the usability of vein identification equipment.

The present invention provides a trichlorosilane gasification supply device used in the semiconductor industry and the like. The trichlorosilane gasification supply device of the present invention comprises: evaporator 1, is provided with the import port 3 of the hydrogen as carrier gas, also has the heating device 16 that makes liquid trichlorosilane vaporize; Condenser 2, has A cooling device 20 that condenses the gas at a temperature corresponding to the saturated vapor pressure of the vapor pressure of the vaporized trichlorosilane gas; a precision temperature control mechanism and a precision pressure regulation mechanism 5 of the condenser, wherein the central line of the evaporator and the condensation The central lines of the condenser are not on the same line, and the lower end of the condenser and the lower end of the evaporator are communicated through pipes 13 and 14. In addition, during the control process, the total flow rate of the trichlorosilane-hydrogen mixed gas whose concentration is adjusted is linked with the temperature ratio of the liquid trichlorosilane 17 in the evaporator.

The condensed water treating device for air conditioner and with convenient installation and obvious energy saving effect includes a water collecting pan, a filter, a water tank, a water level switch, a water pump, a water draining pipe, a water dividing pipe, a water accepting pan and an ultrasonic vibration atomizer connected together. It may be used widely in different kinds of air conditioners.