42results about How to "Easy to judge intuitively" patented technology

The invention discloses a transient disturbance weather map and low-frequency disturbance weather map manufacturing method based on atmospheric variable physical decomposition and application of the method in weather forecast. The method includes that formerly observed, recently observed and medium-term numerical weather predication modes are used for output atmospheric space three-dimensional multi-variable and time continuous grid point data, climate components and synoptic scale disturbance components of daily cycle and annual cycle are obtained through physical decomposition, and the synoptic scale disturbance components are used for manufacturing a transient disturbance weather map and a low-frequency disturbance weather map. According to the method, after climate seasonal variation field and day-by-day synoptic scale transient disturbance field physical decomposition is performed on meteorological data of the Northern Hemisphere in the past 30 years, synoptic scale transient disturbance components predicated through the recently observed and medium-term numerical weather predication modes are used for drawing a transient disturbance weather map and a low-frequency disturbance weather map. The transient disturbance weather map is suitable for manufacturing 1 to 3 days short-term weather forecast and 4 to 9 days medium-term weather forecast, the low-frequency disturbance weather map is suitable for manufacturing medium-term and 10 to 30 days elongating stage weather process forecast. A novel tool for weather forecast is provided, and accuracy of the weather forecast can be improved.

The invention relates to the technical field of active noise control, particularly to an adaptive active noise control display system, so that problems that visual displaying of the existing adaptive active noise control technique can not be realized, people can not understand and master the technique conveniently, and people can not determine and sense the noise control effect conveniently are solved. The adaptive active noise control display system is composed of a display rack, a control unit, a primary sound source loudspeaker, a secondary sound source loudspeaker, an error microphone and an LCD touch screen. The control unit controls the primary sound source loudspeaker to send out single-frequency or composite-frequency noises by controlling the key of the LCD touch screen or dial switch selection, thereby forming a primary sound field; the error microphone obtains a noise signal of the primary sound field; the noise signal of the primary sound field and an error sound channel function obtained by identification are analyzed to obtain a secondary sound source signal; and the control unit controls the secondary sound source loudspeaker make sounds to realize adaptive active noise control so as to eliminate the secondary sound field noises. And changes of noises before and after active control implementation are compared visually by observing the touch screen.

The invention discloses a fundus camera optical system for aligning working positions of human eyes and a position aligning method. The working principle of an aligning optical path is as follows: one parts of a first light beam and a second light beam which are generated by a double-beam generation device are reflected by a second beam splitter after passing through a first beam splitter, and the reflected parts are incident into the human eye via an eye objective lens after passing through a first diaphragm with a hole; the two light beams are reflected back by the corneal, passes through the eye objective lens and the first diaphragm with the hole and are incident into the second beam splitter and reflected by the second beam splitter to the first beam splitter; a probe is adjusted so that the two light beams are just gathered on an imaging device, and at the moment, the imaging device displays two spots which are overlapped on each other and generated by focusing the two light beams on the imaging device, and then the working position of the vertex of the corneal in a fundus camera is judged according to the two spots overlapped on each other. As the aligning optical path does not comprise a diopter lens, the alignment of the working position is not affected by refractive adjustment, and therefore, even for different human eyes, the vertex of the corneal in the fundus camera is well-determined.

The invention relates to a breathing mask pad for a patient using a breathing apparatus and a breathing mask. The breathing mask pad comprises a pad body, the pad body comprises a unidirectional permeable layer, the side, away from the skin, of the unidirectional permeable layer is fixedly provided with a breathable water-absorbing layer, and the breathable water-absorbing layer internally includes a moisture indicating agent. According to the breathing mask pad for the patient using the breathing apparatus and the breathing mask, perspiration on the skin is absorbed by the unidirectional permeable layer, the breathable water-absorbing layer adsorbs the perspiration and is breathable to prevent the skin from being oppressed, the breathing mask pad is attached to the upper portion of the breathing mask to make the facial skin cleaned conveniently.

The invention provides an image display method in CT interventional therapy. A monitor is arranged beside a checking table. The monitor is connected with an image control system and at least two rebuilding images are displayed on the monitor. The method firstly sets the arrangement sequence of the image according to the orientation of a patient on the checking table and the position of the monitor opposite to the checking table and then the image control system adjusts the arrangement sequence of the rebuilt image. Adopting the invention can lead the arrangement sequence of the image displayed on the monitor to be consistent to the orientation of the patient on the checking table all the time; consequently the image on the monitor acquired can be convenient for the intuitional judgment of a doctor for one aspect and reduce the danger of the patient for the other aspect.

The high-positioning-precision jig comprises a bottom fixing frame, a moving seat, a rectangular supporting column, a lifting cross beam, a clamping and fixing structure, an adjusting structure and a positioning structure, the moving seat is slidably connected to the upper surface of the bottom fixing frame, and the clamping and fixing structure is fixedly mounted on the upper surface of the moving seat; rectangular supporting columns are fixedly connected to the two sides of the bottom fixing frame correspondingly, inner cavities are formed in the rectangular supporting columns, and adjusting structures are installed in the inner cavities of the rectangular supporting columns. The clamping and fixing structure is arranged, a part needing to be machined can be flexibly fixed through the clamping and fixing structure, the position and angle of the part can be flexibly adjusted after fixing, machining is facilitated, the adjusting structure is arranged, the height of a tool can be adjusted through the adjusting structure, and the machining precision is improved. And the cutter is matched with the clamping and fixing structure to grind the part.

The invention discloses a visual evaluation method for fatigue life of a material subjected to laser peening strengthening treatment in a service process, which comprises the following steps of: S1, establishing a library file in which a corresponding relationship among surface micro-plastic deformation at different stages, residual stress and surface roughness is recorded; s2, during the serviceperiod of the engineering structure material, detecting the micro-plastic morphology of the engineering structure surface through a surface morphology instrument or other surface detection means, andevaluating the residual stress and roughness at different service stages based on the library file; s3, calculating crack propagation rates of different stages according to the crack propagation ratemodel (a) after laser shot blasting treatment in combination with evaluation results of residual stress and roughness; and S4, evaluating the fatigue life of the material according to the crack propagation rates of different stages. The method has the advantages of being visual in judgment, easy to judge and capable of effectively improving the reliability evaluation efficiency, and meets the high-requirement standard of engineering structure parts.

The invention discloses an experimental device and method for simulating progressive failure of an aeolian sand stratum in tunnel construction. The experimental device comprises a transparent model box and an inflatable model; a reserved tunnel hole penetrating through the front wall and the rear wall of the box is formed in the middle of the model box; the inflatable model is in a cylinder shapeand is the same as a model tunnel in size, and an air valve used for inflating and deflating is arranged at the end of the inflatable model, and the inflatable model is transversely arranged in the model box in a penetrating mode through the reserved tunnel hole; other space in the model box is filled with a model material, closely surrounding the inflatable model, used for simulating the aeoliansand stratum, the model material is particulate matter dyed in a layered mode, and cohesion of the particulate matter approximates to zero; and a camera is arranged at the position, directly facing the reserved tunnel hole, outside the model box and used for recording the change process of the model material after the inflatable model is deflated quickly. According to the experimental device, theinflatable model is used for simulating an aeolian sand tunnel, and excavation of the simulated tunnel can be achieved at a time; the model material is dyed into different colors in the layered mode,the camera is used for recording the process of progressive failure of model surrounding rock, and the rule of progressive failure of the model surrounding rock can be analyzed accurately and completely.

The invention discloses a hierarchical clustering-based maintenance order dispatching method, a device, equipment and a storage medium. The method comprises the following steps: dividing a maintenance area into a plurality of sub-areas, and periodically executing the following steps: collecting information of orders which are not dispatched currently; obtaining the number of shared order pairs between any two sub-regions based on the order information; constructing a space sharing graph, taking the sub-regions as vertexes, and taking the number of shared order pairs of the two vertexes as the weight of a connecting edge of the two vertexes; performing clustering in the space shared graph to form a sub-graph set, and in the clustering process, taking the weight accumulation sum of connecting edges in the sub-graph set as large as possible and the weight difference of the connecting edges in the sub-graph set as small as possible as targets; and obtaining position information of the maintenance personnel, and sending order information of the service address in the sub-graph where the maintenance personnel are located to a maintenance personnel terminal. A space sharing graph is constructed, so that order cold and hot sub-regions can be visually judged, order information sent to maintenance personnel is dynamically adjusted, and the time consumed on the way is reduced.

The invention relates to an IRIG-B direct current code decoding and time synchronization automatic switching method based on an FPGA, and the method employs an FPGA chip to construct a starting sequence of a preset mode, a time synchronization mode and a timing mode, and achieves the automatic switching among the preset mode, the time synchronization mode and the timing mode. According to the invention, accurate timing can be carried out on the basis of set time and the time of a correction clock can be automatically switched when external time is corrected, accurate timing can be continued on the basis of the time when the external time is corrected and the clock is stopped, second, minute, hour and day are decoded to obtain time signals of month, day, hour, minute, second and the like, and the time signals are output in the form of a serial port at the same time. The updating frequency is 1s, so that whether the time is correct or not can be conveniently and intuitively judged. The FPGA chip is mainly used as a main control chip, code portability is high, and implementation is easy.