42 results about "Dispersion point" patented technology

The invention provides a space-time regulation and emergency guidance system and method for scenic spot tourists. The space-time regulation and emergency guidance system for scenic spot tourists comprises a hardware basis platform and an application software system, wherein the hardware basis platform comprises a tourist flow volume collector, a video monitor, a multimedia service terminal, a TRE server and a control management platform; the application software platform comprises a tourist flow analysis module, a video analysis module, a space-time regulation module, a TRE database, a scenic spot tour guidance module, a flow distribution and emergency guidance module, a flow distribution and emergency monitoring module and a TRE management module, and the tourist flow analysis module is used for judging the saturation condition of the tourist flow volume of a scenic spot and judging whether abnormal phenomena exist in the scenic spot by analyzing the bidirectional tourist flow volume, which is collected by the tourist flow volume collector, of a dispersion point in the scenic spot and the tourist flow real-time state, which is collected by the video monitor, of a scenic spot core area and a dispersion thoroughfare; according to a judgment result, the flow distribution scheme and the emergency decision scheme of each scenic spot are matched according to the relevant setting of the TRE database; information is transferred to tourists by the multimedia service terminal to guide the tourists to choose a touring route; and the situation of excess tourists in certain space time is alleviated.

The invention provides a three-dimensional scattered point cloud topological near neighbor data query method which is characterized in that: three-dimensional scattered point cloud data is collected, a dynamic hollow ball expansion algorithm is adopted to query a k-near neighbor point set based on a dynamic spatial index structure of R<*>-tree tissue three-dimensional scattered point clouds, sample point topological near neighbor reference data is obtained by the eccentric expansion and the self-adaptive expansion, a Voronoi diagram of the sample point topological near neighbor reference data is generated, data points which are corresponding to a sample point Voronoi neighborhood are queried, and the data points are the topological near neighbor data of the sample points. The use of the method can rapidly and accurately obtain the topological near neighbor data of any complicated mass scattered point clouds.

An evaporative air conditioning heat transfer apparatus comprising a collection surface for diverting liquid into a channel, a reservoir capable of receiving and storing the diverted liquid, at least one conduit for transferring liquid from the reservoir to a liquid dispersion point, and a regulator positioned between the reservoir and the liquid dispersion point and configured to control the amount of liquid released at the liquid dispersion point, wherein the liquid dispersion point is configured to distribute the liquid over a condensing coil.

The invention relates to the field of processing of macromolecular compounds, in particular to a film blowing material and a preparation method thereof. The material special for blowing a packaging film comprises a composite blowing material, wherein the composite blowing material comprises carrier resin, inorganic powder, a toughening agent, a dispersing agent, a lubricating agent, a coupling agent and a stabilizer. The preparation method for the material special for blowing the packaging film comprises the following steps of: 1) mixing the composite blowing material; and 2) performing extrusion granulation on the mixture. Through the technical scheme, the composite blowing material has the obvious advantages that cost is low, dispersion points do not exist on the surface of a film-coated product, and the like.

The invention discloses an elliptical vibration trajectory control method based on a microtexture model, and belongs to the numerical control machining field. The method comprises the steps that a microtexture surface equation is constructed according to microtexture design parameters, and microtexture machining parameters, cutter parameters and a cylinder datum plane radius are determined; the microtexture model is dispersed in the axial direction and the circumferential direction of the cylinder surface on the basis of the microtexture machining parameters and the resonant frequency of an elliptical vibration device, and position vectors of all dispersion points are obtained; the vibration amplitude of an elliptical vibration cutting trajectory at each dispersion point is determined according to the position vector of the dispersion point, and elliptical vibration cutting trajectories of all the dispersion points are obtained; the elliptical vibration cutting trajectories of all the dispersion points are corrected according to an elliptical vibration cutting trajectory error and used for microtexture cutting machining. The elliptical vibration trajectories are effectively controlled according to the elliptical vibration cutting surface topography forming mechanism through the control method, then controllability of micro-nano texture generation is guaranteed, and the generation problem of random-shaped microtextures is solved.

Provided is a movable oil field oily sludge biological tempering separation treatment device. The device comprises a pretreatment screening process section, a primary oil-mud treatment process section, a secondary oil-water-mud separation process section, a biological sludge treatment process section, an oil-water separation process section, a sand treatment process section and other sludge treatment systems. Each process section of the device is independently prized and modularized, transportation is convenient through prizing, and aiming at the characteristics that remote oil fields, factories and mines and other blocks are scattered and are poor in ground environment condition, the movable oily sludge treatment device has the design rule of being simple, applicable, safe and reliable and meeting production. The device achieves equipment concentration and overall prizing, can be transported to all oil-mud dispersion points, and meanwhile can achieve the treatment effect of a fixed sludge treatment station, and convenience is brought to enterprises with small oil-mud output and remote locations.

The embodiment of the invention provides an optical module adjusting method. The method comprises the following steps: collecting first incident light power of a first optical module, a signal-to-noise ratio of a first signal and an error rate; under the condition that the first incident light power is not within the first power range, adjusting the emission light power of the second optical module; when the first incident light power is within the first power range and the signal-to-noise ratio of the first signal is smaller than or equal to a first threshold value, adjusting the linearity and/or the cross point of an eye pattern corresponding to a sending signal of the second optical module; and adjusting the temperature of the laser in the second optical module according to the first temperature adjustment step length and the bit error rate of the first signal under the condition that the first incident light power is within the first power range and the signal-to-noise ratio of the first signal is greater than a first threshold value. According to the invention, the technical problem that the optical module is sensitive to zero dispersion point distribution of the optical fiber in actual transmission is solved, and the technical effect of adaptive adjustment of dispersion in the optical module is achieved.

The invention provides an ultra-large bandwidth super-continuum spectrum laser source. The ultra-large bandwidth super-continuum spectrum laser source mainly comprises a pulse optical-fiber laser device, an optical fiber amplifier and a germanium oxide optical fiber, wherein the germanium oxide optical fiber is a step-index type optical fiber with a refractive structure, an optical fiber with a photonic crystal structure or a micro-structural optical fiber. The ultra-large bandwidth super-continuum spectrum laser source introduces positive waveguide dispersion through the germanium oxide optical fiber, can move zero dispersion points of the germanium oxide optical fiber from a 1.7-micron waveband to a nearby 1.5-micron waveband in the short waveguide direction, makes the zero dispersion points be close to the wave length of the pulse optical-fiber laser device and forms a group velocity dispersion curve of frequencies symmetrically distributed about the zero dispersion points. An output spectrum of the laser source can cover a middle-infrared waveband of visible light, the ultra-large bandwidth super-continuum spectrum laser source has the advantages of being of an all-fiber structure, low in cost, good in stability and the like and is easily popularized and used in the lots of fields of optical element performance testing, micro-imaging, biomedicines, broad-spectrum sensing, spectroscopy and the like in a wide-range mode.

The invention discloses a new method for controlling optical deformed waves to generate an adjustable super-continuum spectrum. The method is characterized by comprising the following steps of injecting two identical monochromatic laser light sources into a two-stage cascaded optical fiber through optical coupling beat frequency and receiving output signals, wherein the first light source is usedas a pump light source, and the second light source is used as a signal light source. A two-stage cascaded optical fiber structure is adopted, the first grade is a single zero dispersion optical fiber, an optimum modulation frequency is selected to inhibit influence of noise on pulse evolution and induce the optical deformed waves to be generated relatively stably, and suitable modulation depth and optical fiber length are selected to make the optical deformed waves have higher output intensity. The second grade is a double zero dispersion optical fiber and used for controlling the optical deformed waves; by selecting the double zero dispersion optical fiber with different zero dispersion point positions, the optical deformed waves are transformed into forms of base-order solitons or dispersive waves, therefore, the smooth super-continuum spectrum with different bandwidth ranges are obtained, and meanwhile bad influence of the optical deformed waves on signal transmission of an opticalfiber system is avoided.

A non-linear phase noise limiter device limits the non-linear phase noise that affects a phase-modulated input optical signal of constant mean amplitude conveyed over a transmission line. The device is placed at a zero dispersion point of the transmission line, and it is suitable for suppressing amplitude fluctuations about a mean value in said optical signal.

The invention provides a method for obtaining an ultra-wide-band ultra-flat super-continuum spectrum in a mode of cascading two sections of single-mode photonic crystal fibers with two double-zero dispersion points respectively. A short-pulse laser light source is injected into a cascaded optical fiber with a certain length through a coupling system, an output signal is received by a spectrum analyzer, the central wavelength of the light source is located in an abnormal dispersion area of the first stage of the cascaded optical fiber, and the first stage of the optical fiber is a photonic crystal optical fiber with a wide zero dispersion frequency interval so as to greatly broaden the spectrum; and then the second-stage optical fiber is cascaded, and the position of a second zero dispersion frequency (low-frequency zero dispersion point) of the second-stage optical fiber is adjusted, so that the second-stage optical fiber is located in the spectral range of a first fundamental solitongenerated in the first-stage cascaded optical fiber at the optical fiber output end of the second-stage optical fiber, and the flatness of the spectrum is obviously improved. Meanwhile, the flatness of the spectrum can be adjusted by adjusting the pumping power and the length of the second-stage optical fiber. According to the method, the zero dispersion frequency position can be adjusted by changing the aperture size and the hole spacing of the optical fiber, the super-continuous spectrum is shaped in a targeted manner, the super-continuous spectrum in different frequency ranges is shaped selectively, and finally, the ultra-wideband ultra-flat super-continuous spectrum is obtained.