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65 results about "Centimeter" patented technology

A centimetre (international spelling as used by the International Bureau of Weights and Measures; symbol cm) or centimeter (American spelling) is a unit of length in the metric system, equal to one hundredth of a metre, centi being the SI prefix for a factor of 1/100. The centimetre was the base unit of length in the now deprecated centimetre–gram–second (CGS) system of units.

Delaunay-triangulation-network-based multi-redundancy network RTK atmospheric error interpolation method

ActiveCN106970404AIncrease the number ofSolve the problem of not being able to take advantage of redundant baselinesSatellite radio beaconingCentimeterBaselining
The invention discloses a delaunay-triangulation-network-based multi-redundancy network RTK atmospheric error interpolation method. A network RTK data processing center constructs a Delaunay triangulation network based on a correct coordinate of a CORS base station; after a user is accessed to a data processing center, an optimal triangular unit and a suboptimum triangular unit of the location of the user are selected; an atmospheric error interpolation base line number is extended; an MLIM ionized layer interpolation model and an RELIM tropospheric interpolation model are established; and an atmospheric interpolation completeness monitoring method of a moving station in a grid is provided. The interpolation precision of the MLIM ionized layer interpolation model is higher than that of the traditional model by three times and the interpolation precision of the RELIM tropospheric interpolation model is higher than that of the traditional model by 6 to 30 times; and the two models can still have high interpolation precision at an area with a large elevation difference at the base station. A regional CORS ionized layer and tropospheric completeness index can reach a centimetre-level interpolation precision, so that real-time positioning completeness monitoring of a network RTK user can be realized. With the method provided by the invention, a CORS base station around a user can be utilized fully; the atmospheric delay interpolation precision of the area can be improved; and the rapid and high-precision positioning of the user can be guaranteed.
Owner:SOUTHEAST UNIV

Infrared nondestructive testing and imaging method based on array laser source and used for structure surface cracks

The invention discloses an infrared nondestructive testing and imaging method based on an array laser source and used for structure surface cracks. The method comprises the following steps: expanding the beam of a laser source generated by a pulse laser device into a collimation laser beam with the diameter of several centimetres by virtue of a laser beam expander at first, and then focusing the laser beam onto the surface of the tested piece by virtue of m*n array convex lenses to form array laser spots with radiuses of less than 1mm and uniformly distributed, and then monitoring the temperature field distribution change condition of the surface of the tested piece irradiated by the array pulse laser source by using an infrared camera; when cracks exist in the irradiated area of the surface of the tested piece, the cracks block the diffusion of the heat of the laser irradiation on the surface, thus forming a high temperature difference at the both sides of each crack. Therefore, the cracks on the surface of the tested piece can be tested and imaged through the temperature gradient field of the irradiated area. The method disclosed by the invention has the advantages of being simple in system structure, easy to realize and operate, high in testing speed, high in sensitivity, intuitive in result, capable of realizing remote testing, and the like.
Owner:XI AN JIAOTONG UNIV

Precise positioning and ranging method for suspended track unmanned vehicle based on UWB and DGPS technologies

The invention provides a precise positioning and ranging method for a suspended track unmanned vehicle based on UWB and DGPS technologies. The precise positioning and ranging method comprises the steps that: a DGPS and a UWB positioning and ranging system are installed on the unmanned vehicle; both the DGPS and the UWB positioning and ranging system are connected with a vehicular control system; the vehicular control system performs positioning, ranging and unmanned driving of the vehicle through the DGPS and the UWB positioning and ranging system; a vehicular GPS and a base station form the DGPS; UWB sensors of front and rear vehicles on the same track form the UWB positioning and ranging system; mutual electromagnetic pulse signals are sent; the distance between the front and rear vehicles is obtained through a TOF algorithm; and, as the supplement of the DGPS, when the GPS does not have a satellite signal, the unmanned driving security of the vehicle is ensured through the wirelessranging of the UWB between the vehicles. According to the precise positioning and ranging method provided by the invention, the UWB and DGPS positioning technologies are applied to control of the suspended unmanned vehicle at the first time; the disadvantage that the GPS cannot complete positioning in some cases can be made up by the UWB technology; and thus, the positioning and ranging precisionis up to the centimetre level.
Owner:江苏添仂智能科技有限公司

Movable lotus root-cultivating pool as well as method and tool thereof

The invention discloses a movable lotus root-cultivating pool as well as a method and a tool thereof, belonging to a cultivating and breeding system. A whole piece of waterproof cloth is laid on the whole bottom and the enclosure of the pool. The invention is characterized in that the outer sides of piles (13) fixed on a foundation are connected with the waterproof cloth (1) through a special tool so as to serve as a pool dam, and the waterproof cloth (1) is extended by cloth-connecting clamps (6) and is supported by cloth-supporting clamps (8); and the joint parts (15) of the pile (13), the waterproof cloth (1) and the foundation are provided with connecting mechanisms, and a drain valve (17) and a feed valve (18) are arranged in the pool. The invention has the advantages of leaking stoppage, water level regulation, no pollution and reduced cost; and the effect can be better if the tilled land and wasteland of paddy fields as well as the ceilings and cement foundations of urban tall buildings are utilized. The method comprises the following steps: laying 15-20 centimetres of soil by utilizing the special tool; transporting up and down in a building; plowing and weeding; ditching; burying lotus roots; and harvesting, wherein water the height of which is 20 centimetres is introduced in the pool, so that the lotus roots can grow in the shallow soil layer plane in all directions, thus the lotus roots can be harvested easily, especially the acre yield is increased to 12000 jin from more than 1000 jin, and simultaneously the invention has the advantages of purifying air, regulating air temperature, beautifying cities and the like.
Owner:王德普

Method for conveniently and fast observing stem tip flower bud differentiation of tobacco plant

The invention relates to a method for conveniently and fast observing stem tip flower bud differentiation of tobacco plant, belonging to the technical field of developmental biology of plants. The method comprises the following steps: a. taking a sample with a blade at the position which is 5 centimetres downward from the stem tip; b. after sampling, immediately placing the stem tip in an ordinary injector for medical use, which has a volume of more than 15mL, pushing a pushing rod of the injector to the bottom, using a thumb to block the front part of a needle tube and forcefully pulling up the pushing rod to the top of the injector; retaining the position for 1-3min and repeating the process for 3-4 times; c. fixing the stem tip sample in a stationery liquid for 24h for testing with components having the following proportioning: 5.0mL of formaldehyde with a concentration of 38%, 5.0mL of acetic acid, 90.0mL of alcohol with a concentration of 75%; d. using a stereomicroscope to observe and take photos of the sample. The method has the advantages of low cost, simple and convenient operation, fast observation and acquisition of digitalized pictures with clear images, thus being of great guiding significance for experimental studies.
Owner:YUNNAN ACAD OF TOBACCO AGRI SCI

Preparation technology of centimetre wave-millimeter wave compatible absorbing material

The invention relates to a preparation technology of a centimetre wave-millimeter wave compatible absorbing material. The material is of five-layer structure, and a substrate is an irregular surface made of any material; the topmost layer is a first layer, and mainly consists of a W-shaped hexagonal ferrite absorbing agent and an acrylic resin adhesive; a second layer is composed of a carbonyl iron powder absorbing agent and an epoxy resin adhesive, and a third layer is composed of a Fe85Si1Al6Cr8 nanometer crystal thin absorbing agent and an epoxy resin adhesive; a fourth layer is composed of a polycrystal iron fibre absorbing agent and an epoxy resin adhesive; and a fifth layer is composed of a chopped carbon fiber, a sooty mixed absorbing agent and a polyurethane adhesive. A preparation process comprises the following steps: firstly, covering and preparing a bottom fifth-layer medium coating on the substrate; and then successively covering and preparing a fourth-layer medium coating, a third-layer medium coating, a second-layer medium coating and a first-layer medium coating, wherein the coating preparation of each medium coating is as follows: uniformly stirring a coupling agent, a diluting agent and the absorbing agent of each layer, standing, then adding the adhesive of each layer, uniformly stirring to obtain a paint, coating the paint, and curing, thus obtaining the centimetre wave-millimeter wave compatible absorbing material.
Owner:HUNAN JINGE NEW MATERIAL

Manufacturing method of multiposition microwave reactor with reflection cavity

InactiveCN107661739AEasy to MicrowaveImprove microwave utilizationEnergy based chemical/physical/physico-chemical processesSquare cross sectionCoaxial cable
The invention discloses a multiposition microwave reactor with a reflection cavity. The multiposition microwave reactor comprises the reflection cavity, a reactor subassembly and a microwave radiatorsubassembly and is characterized in that the reflection cavity is a tubular shell which is made of a microwave reaction material and has the cross section being square; microwave reaction bodies are arranged at the four corners of the tubular shell respectively; the reactor subassembly comprises four tubular reactors which are arranged side by side and have the cross sections being square; a diagonal line of the square cross section of the reactor subassembly and a diagonal line of the cross section of the reflection cavity are arranged in the tubular shell in a mutual perpendicular manner; the microwave radiator subassembly comprises a microwave radiation head and a microwave source; the radiation head is a rod-like slot antenna radiator; the radiation end of the radiation head is arranged in a center line of the tubular shell; and a connector end of the radiation head is exposed out of the tubular shell and is connected with the microwave source through a coaxial cable. The inventionadopts an absorption and reflection energy feedback device, by arranging a reflection cavity body, the microwave utilization ratio is obviously increased; the absorption and reflection energy feedback device is small in size reaching a centimetre level and can conveniently perform microwave treatment on multiple trace or a small amount of samples at the same time.
Owner:YUNNAN MINZU UNIV

Method for releasing dormancy of oil-used peony seeds

The invention discloses a method for releasing dormancy of oil-used peony seeds. The method comprises the following steps: a quick post-maturation stage of seed embryos of the oil-used peony seeds: harvesting peony pods, spreading the peony pods in shade indoors, and overturning up and down once very day; after the pods crack naturally, screening and collecting shed seeds; performing stratification treatment after full seeds which submerge in water are dried in shade indoors for 1 to 2 days; adding fresh river sand which contains 50 to 60 mass percent of water in the screened seeds, and spreading a mixture indoors for drying; keeping internal temperature and humidity of a mixture of the seeds and the river sand, and treating for 30 days to obtain the mixture of the seeds with the seed embryos which are completely matured and the river sand; a hypocotyledonary axis dormancy releasing stage of the oil-used peony seeds: controlling the indoor temperature of the mixture of the seeds and the river sand to be between 15 and 20 DEG C, keeping the humidity of the river sand, and treating for 30 days to obtain a mixture of the seeds of which the root length is greater than 4 centimetres and the river sand; an epicotyl dormancy releasing stage of the oil-used peony seeds: controlling the indoor temperature of the mixture of the seeds of which the root length is greater than 4 centimetres and the river sand to be below 10 DEG C; spraying a plant growth conditioning agent; keeping the river sand at a certain humidity; treating for 30 days; completing a dormancy releasing process of the oil-used peony seeds.
Owner:NORTHWEST A & F UNIV

Tight reservoir millimeter-level sample oil source direct analysis and comparison method

The invention relates to a tight reservoir millimeter-level sample oil source direct analysis and comparison method. The method includes the following steps that: a borehole rock core is treated according to a non-conventional tight and mud shale rock core lithology fine and accurate description method, so that a tight reservoir rock core lithology description result is obtained; the rock core isfrozen and then is cut according to the obtained tight reservoir rock core lithology description result, and a frozen rock core sample is obtained; the centimetre-level or millimeter-level stripes ofthe tight reservoir and source-reservoir micro-combination of the sample are drilled so as to be sampled, and an obtained sample is packaged, and then is frozen and stored; a milligram-level sample from the frozen and stored sample is weighed, and is arranged in the heat-release tube of a tight reservoir oil source direct analysis and comparison system, after heat release is performed, a tight reservoir and source-reservoir micro-combination rock hydrocarbon fingerprint analysis spectrogram and data are obtained, and analysis data processing is carried out, and hydrocarbon fingerprint analysisgeological experiment parameters and fingerprint ratio parameters are obtained; and non-conventional tight oil and mud shale oil source-reservoir micro-combination oil source comparison and oilinessevaluation are carried out on the basis of the geological experiment parameters and the fingerprint ratio parameters.
Owner:NORTHEAST GASOLINEEUM UNIV

Outer wall stone heat preservation decorative one-piece board

The one-piece board of the invention relates to a heat preservation decorative material for building external walls. The one-piece board of the invention is composed of an ultrathin natural stone with a thickness of 7+ / -1 mm and a hard bubble polyurethane thermal insulation material, and the periphery and the back side of the one-piece board are packed by a high pressure cement fibrolite plate serving as a fireproof frame. Firstly, natural stone is processed into the ultrathin natural stone with a thickness of 7+ / -1 mm, a dovetail groove is arranged at the back of the ultrathin stone and one centimetre-width thicknessing processing is carried out at the periphery of the back of the ultrathin stone to facilitate the installation of the fireproof frame; and then, the high pressure cement fibrolite plate and the ultrathin stone are put into a prefabricated mould and the polyurethane serving as the thermal insulation material is injected into the mould by a machine. In the invention, the stone with a thickness of 7+ / -1 mm is adopted to solve the problem that the traditional hang stone with a thickness of 2.5 centimetres bears the weight of the wall; in addition, the one-piece board integrates fire proofing and decoration, and a decorative surface is completed by one-off construction, which accelerates on-site construction speed and construction security; each piece of the thermal insulation material is a totally-enclosed independent whole, so that the thermal insulation material is more durable.
Owner:庄建东

Navigation testing method and system simulating walking inertia free of satellite signal

The invention provides a navigation testing method and system simulating walking inertia free of a satellite signal. Testing equipment and high-precision positioning equipment are in a wide environment. The high-precision positioning equipment acquires carrier phase information of a GNSS signal. Carrier phase information of a nearby positioning service supplier CORS is acquired through a RTK account number of the positioning service supplier; a centimetre-level RTK fixed solution is calculated by means of an algorithm, and meanwhile, a result document with corresponding coordinate informationis generated; walking inertial navigation of the testing equipment is initialized after walking for a period of time, and a GNSS signal source of the testing equipment is isolated, so that the testingequipment enters a pure walking inertial navigation working mode and meanwhile, the high-precision positioning equipment further acquires centimetre-scaled RTK fixed solution walking result document,and the walking result document, with coordinates, of the testing equipment and the positioning result document of the high-precision positioning equipment are compared to obtain accurate error statistics. The positioning result of the testing equipment is more accurate.
Owner:QIANXUN SPATIAL INTELLIGENCE INC

Portable surface runoff simulating and measuring device

The invention discloses a portable surface runoff simulating and measuring device. The device comprises a measuring cylinder, a water diversion channel, a runoff frame and a sampling bottle, wherein the measuring cylinder is fixed on a bracket; a water outlet and a valve are arranged at the lower end of the measuring cylinder; the water outlet is communicated with the water diversion channel through a water delivery pipe; a water outlet slot hole is laterally formed in the side wall of the water diversion channel; a supporting seat and an access board are arranged below the water diversion channel; the runoff frame comprises a front inserting plate, a rear inserting plate and two side inserting plates which are connected with one another and form a rectangle; the access board is buckled on the inner side of the front inserting plate through an inserting slit; a runoff output connector is arranged in the outer side of the rear inserting plate; the sampling bottle is communicated with the runoff output connector on the rear inserting plate through a runoff output pipe; a volume scale line is arranged on the side wall of the sampling bottle; a vertical angle measuring device is arranged on the outer side wall of each side inserting plate; a horizontal reference device is arranged on the outer side wall of the rear inserting plate. The simulating and measuring device is centimetre-level in dimension, can repeatedly measuring surface runoff sample data in quantity, and improves the accuracy of observation data.
Owner:CHANGAN UNIV

Preparation method for polymer film for food contact in migration test

The invention relates to a preparation method for a polymer film for food contact, and particularly relates to a preparation method for a film for a migration test in a food contact material migration model. Polymer grains and a to-be-detected migration object are added in an organic solvent in a certain ratio, and adequately dissolved to form a mixed solution with viscosity; a certain amount of the mixed solution is taken, and dripped on a polymer composite isolation pad with the diameter of 2-5 centimetres, or the polymer composite isolation pad is placed in a spin coater, the mixed solution is added in the spin coater, and the spin coater is started. The polymer composite isolation pad dripped or sprayed with the mixed solution on the surface is placed in an atmospheric environment, and after the organic solvent in the mixed solution is volatilized, the polymer film containing the to-be-detected migration object is formed on the polymer composite isolation pad. Different from blowing moulding, calendering moulding, tape-casting moulding or stretching moulding for a polymer film, the preparation method disclosed by the invention has the advantages that preparation for the polymer film can be finished on a substrate with small dimensions, and moreover, the thickness of the obtained polymer film and the content distribution of the to-be-detected migration object are uniform, thus laying the foundation of a parallel test in the further migration test.
Owner:王利兵 +3
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