73 results about "Base level" patented technology

A reticle base level block to support a reticle stage for holding a reticle, a wafer base level block to support a wafer stage for holding a wafer, and the like are supported to be independent of other portions and be controllable in their attitudes by parallel link mechanisms each including at least three expandable rods. Therefore, the portions supported by the parallel link mechanism can be made lightweight using the advantages of the parallel link mechanism, and the attitudes of those can be precisely controlled with excellent operational-characteristics and high rigidity. In addition, transmission of vibrations and the like between the reticle base level block, the wafer base level block and other portions, e.g. an optical projection system, can be prevented. Therefore, a fine pattern formed on the reticle can be precisely transferred onto the wafer.

Various embodiments of the present invention are directed to a multi-level virtualizer that is designed to remove much of the intercept-related functionality from the base-level virtualizer (that exists outside of each partition) and, instead, incorporate much of this functionality directly into each partition. For several of the embodiments, certain intercept handling functions are performed by an “external monitor” that runs within a partition and responds to specific intercept events, and the base-level virtualizer installs these external monitors within each partition and thereafter manages the external monitors for both single-partition and cross-partition intercept events. This distributed approach to intercept handling allows for a much less complex virtualizer and moves the intercept functionality up into each partition where each external monitor uses the resources of the corresponding guest operating system in that partition to resolve the intercept event.

An antenna device in a radar-based level gauge mounted at an opening in a roof of a tank, the antenna device comprising at least one elongated radiating structure, which has a length that is substantially larger, preferably more than 3-5 times longer, than a maximum cross-sectional length dimension of the opening; is oriented in a non-vertical position; and is configured and fed to produce an essentially vertical radiation beam directed downwards in the tank. Preferably, the antenna device is foldable and is inserted into the tank through the opening and oriented in the non-vertical position by means of folding the radiating structure.

The present invention relates to the LED lighting engineering, in particular to a double optical lens used on a LED street lamp. The double optical lens is characterized in that a base level is provided, and the base level is a plane; a light outgoing face of the lens consists of two partial sphere surfaces and a transition surface between the two partial sphere surfaces; the light outgoing face communicates with the base level to define the outline of the base level; the center of the base level is provided with a light entering face, which is a concave face; the base level, the light entering face, and the light outgoing face together define the body of the double optical lens; the double optical lens also includes a pair of buckle hooks arranged on the base level of the body, the pairs of buckle hooks is respectively arranged on the two vertical edges of the base level; the hook points of the buckle hooks extend out of the base level along the base level; the obverse face of the hook points, namely the face facing to the light outgoing face is the first plane, and the first plane is parallel to the base level. The reverse face of the hook points, namely the face keeping away from the light outgoing face is the second plane, and the second plane is an inclined plane relatively to the first plane. The end extending out of the base level of the second face is the low end.

A variable lighting system (“VLS”) for optimizing object visibility at night by setting a base level of lighting, adding a variable light to that base level of lighting, and a synchronizing the timing and sequence of the base level of lighting and the variable lighting. The variable lighting system varies light by intensity, color, direction, or a combination thereof. The variable lighting system also optionally includes a detector for detecting motion, noise, and other occurrences. The variable lighting system can be implemented as a fixed lighting source, a movable lighting source, or a vehicle mounted lighting source. The VLS improves visibility at night for viewers or motorists thereby reducing accidents and damage costs. The VLS saves energy and improves the environment and enhances quality of life by reducing light pollution and light trespass.

The invention relates to a method for partitioning glutenite sedimentary period based on a Fischer diagram. The method comprises the following steps: selecting logging curve combination, discriminating a lithological change surface, discriminating a high-frequency base-level cycle, determining the preferred period of the high-frequency base-level cycle, determining the accuracy of partitioning the high-frequency base-level cycle, making Fischer diagrams, and partitioning a long-term base-level cycle. The method can be used for constructing the corresponding relationship between lithofacies and the logging curves by analyzing the lithofacies, can be used for selecting the logging curve combinations which can well reflect the lithologic characters to carry out clustering analysis, main composition analysis and polynomial regression analysis so as to determine the lithological change, and can be used for partitioning a high-frequency cycle base level by using the logging curve combination, lithological change level and discrete wavelet high-frequency component, and adopting time-frequency analysis technique to acquire the high-frequency preferred cycle period of the logging curve to inspect the partitioned high-frequency cycle base level. On this basis, the Fischer diagrams are made to obtain curves reflecting the change of the base level so as to partition the sedimentary period.

A method is provided to measure the coaxiality between a laser emission shaft and a mechanical reference surface based on a secondary light source. The invention relates to the measurement field and solves the problem that no method is available for accurately measuring the included angle between the laser emission shaft and the mechanical reference surface in an optical test system with small beam divergence angle and strict requirement for pointing control accuracy. The method comprises the following steps of: firstly detecting emergent light spots of a laser emission system to be measured; then installing a porous light diaphragm; installing the secondary light source for the detection of reflected light spots; and finally calculating the directional angular deviation and the pitch angle deviation. Based on the secondary light source and a beam splitting system, the invention can increase the measurement accuracy up to 0.1 Mu rad by focal plane imaging method, and also can prevent the minimal measurement range being limited by the size of light spots.

The invention discloses a method for predicting traffic flow extracted by an improved C-V model-based remote sensing image road network, which comprises the following steps of: (1) preprocessing an original remote sensing image; (2) selecting a seed point and segmenting a first road network sub-image; (3) extracting a road network area by an improved C-V model-based level set method; (4) extracting a road network central line by a morphological thinning method; (5) segmenting a next road network sub-image by using a sub-image position decision rule and automatically acquiring a road network initial curve in the road network sub-images by a threshold segmentation and morphological method; (6) vectorizing a road network; and (7) predicting the traffic flow. By integrating technology such as remote sensing, geographic information system (GIS), image identification, traffic planning and the like, an urban road network can be more accurately, efficiently and cheaply updated in real time, the traffic flow prediction cost is lower, the traffic flow prediction accuracy is higher and the traffic flow prediction period is shorter, so that decision makers can be effectively assisted in making traffic planning decisions.

The invention discloses an oil reservoir division and comparison method based on high resolution sequence stratigraphy. The oil reservoir division and comparison method comprises the steps of: identifying medium-term base level cycles based on rock cores, drilling/logging seismic data, high resolution sequence stratigraphy, base level cycles and an admissible space change principle, by means of the change trend of an A/S value; dividing and comparing oil groups by interfaces and flooding surfaces of the identified medium-term base level cycles; based on the drilling/logging seismic data, the flooding surface and conversion surface of the change of a reference surface, identifying short-term base level cycles, and dividing and comparing sand groups; according to the identified superposed modes of short-term base level cycles, establishing an isochronous stratigraphic framework by means of comparison; and according to the stratigraphic framework, controlling division and comparison small layers under the control of the cycle and stratum superposed modes. The oil groups, the sand groups and the small layers are included in an oil reservoir division and comparison unit. According to the invention, the oil reservoir division and comparison method solves the problem in the prior art that a diachronous phenomenon usually occurs in the comparison process.

The invention relates to an installation method of a bow transverse thrust unit and belongs to the technical field of ships. The installation method comprises the following steps of pre-installing a barrel on the stroke side and the starboard at the bottom of a ship body, checking and correcting the circular degree of the barrel, and marking a center line of the barrel; measuring the height between the center line of the barrel and a basic line (BL); checking and measuring parallelism and distance between the center line of the barrel and a motor base, and ensuring the center line of the barrel to be parallel to the upper surface of the base; erecting temporary supports at two ends in the barrel in order to ensure rigidness of the barrel; adjusting the distance between the center line of the barrel and a base level with a flange plane (the upper surface) of the motor base of the barrel serving as the base level; checking levelness of the flange plane of the motor base, and ensuring a positioning error to be within +/-2mm; and after correct positioning, primarily performing spot welding on the base and the barrel to achieve fixation, and performing welding on the barrel through a section symmetric welding method to reduce various deformations caused by welding. The bow transverse thrust unit installed through the method is high in installation accuracy, small in power loss and large in output power.

The invention relates to a method and device for determining travel time of seabed seismic reflected wave and belongs to the field of seismic survey. The method comprises the steps of 1, acquiring seismic data of each seismic channel acquired; 2, determining sea water depth of each detection point based on the seismic data; 3, using a three-dimensional interpolation algorithm to establish a seabedmodel; 4, determining stack velocities or root-mean-square velocities, with the sea level as a base level, of multiple discrete points on the basis of seismic data historically acquired in sea leveltowing observation manner; 5, determining vrms of each sampling point on the basis of areal stack velocities or root-mean-square velocities, with the sea level as the base level, of the multiple discrete points as well as the seabed model; 6, for each sampling point, determining vrms' of the sampling point based on the vrms of the sampling point; 7, determining travel time t of the seabed seismicreflected wave of each sampling point from seismic data of each seismic channel, wherein an equation is shown in the description. By using the method and the device, it is possible to improve the accuracy of pre-stack time migration results.

The invention relates to an ancient landform restoration method which comprises the steps of: S1, according to different formation reasons, dividing breccia into karst crush breccia, karst collapse breccia and karst -accumulation breccia, and by establishing a karst breccia identification model, identifying karst breccia on a full section of a target layer; S2, carrying out marking on positions ofthe karst -accumulation breccia and the karst collapse breccia on the full section, marking a lowest position marked in each bored well as a lowest water table position, determining a lowest water table of the full section, marking an unconformity surface position of each bored well and determining an unconformity surface of the full section; S3, forming a karst ancient landform bored well analysis profile by the lowest water table of the full section, the unconformity surface of the full section and a bored well pillar, flattening the karst ancient landform bored well analysis profile by using the lowest water table of the full section as a base level, and drawing a karst ancient landform profile; and S4, labeling a relative elevation value of each bored well on the karst ancient landform profile so as to draw an isoline formed diagram, wherein the isogram is an ancient landform diagram.

The invention discloses a positioning method of a stream guidance cover on a segmentation. An installing axis line is erected below a base level by a rope after the base level is confirmed. The perpendicular distance of an opposite base level at two ends of the installing axis line is confirmed. A gap of a center line of a relative segmentation of the installing axis line in the horizontal direction is confirmed. A position of the stream guidance cover sleeved outside the installing axis line corresponding to the installing axis line is adjusted. The position of the stream guidance cover is adjusted, thus a middle axis line of the stream guidance cover coincides with the installing axis line. An end surface supporting used for supporting the stream guidance cover is arranged on the stem end side of the stream guidance cover. By means of the positioning method of the stream guidance cover on the segmentation, the intangible middle axis line is changed to be tangible. Rigidity of the installing axis line is guaranteed. The stream guidance cover is installed before the segmentation is closed, thus the positioning operation of the stream guidance cover is moved from the front of a dock to the segmentation manufacturing stage. The positioning difficulty of the stream guidance cover in the dock is reduced. The dock period is shortened. Due to the fact that a segmentation shaped grid and the segmentation are relatively fixed, the middle axis line of the segmentation does not move partially. Precision and accuracy of the installation are guaranteed. Welding difficulty is reduced.

The invention discloses a method for indirectly measuring liquid level and volume of liquid in a storage tank and a gravitational method based level instrument. The gravitational method based level instrument comprises a storage tank, a gravity sensor, a signal amplifier, an A/D (Analog to Digital) converting module, a microprocessor and a display module, wherein the tank end at one side of the storage tank is fixedly connected to a fixed base of the storage tank, and a supporting point is formed at the bottom of the tank end at one side of the storage tank; the tank end at the other side of the storage tank is fixedly connected to the fixed base of the storage tank, and measuring points in contact with the gravity sensor below the measuring points is arranged at the bottom of the tank end at the other side of the storage tank; the gravity sensor is arranged on the fixed base of the storage tank; the gravity sensor is connected with the signal amplifier, the signal amplifier is connected with the A/D converting module, the A/D converting module is connected with the microprocessor, and the microprocessor is connected with the display module. During the operation of the level instrument, the internal structure of the storage tank does not need to be transformed; the level instrument is convenient to mount and maintain; the level instrument can calibrated by users; the original performance of the storage tank can be ensured; and the level instrument can be widely applied.

The invention discloses a large size turbo generator bush and a bore processing method, wherein the bore of the upper and the lower bush has an eccentric circle with the diameter a, the center distance of the inner semicircle of the upper bush has a distance delta from the joint surface, the center distance of the inner semicircle of the lower bush has a distance eta from the joint surface. The center of the oil wedge is arranged on the joint surface of the lower bush and the superficial diameter is b. The bore process of the bush has the following steps: processing the base level of the upper and the lower bush; revising the verticality of the joint surface of the upper and the lower bushes and the base level; assembling the upper and the lower bushes, using the center of the joint surface as the centre of a circle and processing the inner bore of the bush with the diameter b; disconnecting the upper and the lower bushes, underlaying a pad with the thickness delta plus eta between the joint surface, then assembling the upper and the lower bushes; finding out the symmetric center O, then adjusting the eccentricity and finding our the processing center O', at last processing the bush inner circle with the center O' as the processing center.

The invention discloses a construction method of an ahead mini type composite soil nail wall support, comprising the following steps of: measuring and paying off, artificially digging a working face, finishing a side slope and constructing a mini type pile, carrying out earth excavation, finishing the side slope, constructing a soil nail (an anchor rod), paving, fixing a reinforcing mesh, spraying a concrete surface layer (installing a waist rail), and circularly constructing until to a designed base level. Support is carried out by the means that the pressure of a side slope soil body is jointly carried by two support modes of a pre-support mini type pile and a soil nail wall. The method is convenient to construct, the construction cost is within the range between a slop protecting pile and the soil nail wall, the construction method has good effects that the displacement deformation of the edge slope can be controlled, the whole stability can be enhanced, the local collapse can be avoided when the edge slope is dug and the like, and the safety stability of the edge slope is greatly improved according to the method. Compared with the normal soil nail wall and slope protecting pile, the construction method has incomparable advantages.

The present invention provides a sealing structure and its lining component. The sealing structure includes a first base, a lining component, a first component and a second component. The first base includes a first base level, a first and a second chambers. The first component in the first primary position is set between the first and the second chambers in the form of moving between the first established position, and the first component includes a first acting surface. The second component includes a second acting surface. The lining component includes a body, a first and a second break parts. The first break part includes a first main adjoining plane, the second break part includes a second main adjoining plane corresponding to the first main adjoining plane. When the first component moves to the first established position from the first primary position, body of the third component is deformed to clamp between the first acting surface and the second acting surface and the first main adjoining plane and the second main adjoining plane are contacted, this makes the deformed third component contact to the first base level of the first base and separate between the first and the second chambers.