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

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 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 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.

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.