38 results about "Observation level" patented technology

A pressure wavefield and a normal velocity wavefield measured on a smoothly shaped acquisition surface by towed dual-sensor marine seismic streamers are decomposed into up-going and down-going pressure and particle velocity components on an observation level between the acquisition surface and a sea surface of undetermined shape. The up-going and down-going pressure and particle velocity components are extrapolated iteratively in steps from the observation level toward the sea surface. An image point and a reflection coefficient of the sea surface at the image point are determined from the iteratively extrapolated up-going and down-going pressure and particle velocity components.

The invention discloses a method for controlling a shallow water observation-level mini underwater robot. The method includes control construction and communication frame; by means of the method, a lower computer main control panel controls three underwater propellers to rotate, controls cameras to switch, controls a switch of an underwater light-emitting diode (LED) lamp and brightness of the LED lamp, and achieves various underwater automation functions (such as automatic depth keeping, automatic come-up and submergence and automatic advance); both-way communication between a deck unit and the underwater robot is achieved, so is communication between a main control chip of the underwater robot and a co-processor ATmega 8, a communication protocol relevant to communication between the underwater robot and the deck unit is formulated, the underwater robot can receive control instructions of the deck unit, and the deck unit can receive state information sent by the underwater robot. Besides, according to the method, feasibility of achieving automatic depth keeping on the basis of an incremental PID algorithm is discussed, and accuracy of automatic depth keeping is analyzed and proved through experimental verification machine data.

The invention discloses an atmospheric refraction coefficient inverting method based on a trigonometric leveling network. The method comprises the following steps of acquiring trigonometric leveling network data; calculating the direct observation level difference hli and the reversed observation level difference h2i of each measured side in the network by the trigonometric leveling measuring method; calculating the number n of independent triangles in the network; calculating the sum Cj of the three sides of each triangle; calculating the weight Pj of each triangle in the network; calculating the level difference closure error omega j of each triangle; applying a constraint condition y; according to the relation between the constraint condition y and the atmospheric refraction coefficient k, drawing a curve graph; taking k value by using the curve graph and the constraint condition; and calculating discrepancy value delta i of the direct observation level difference and the reversed observation level difference, and finding out the k value which makes the y value minimum under the premise that the delta i and the omega j are not beyond limit. The method is more dynamic for the selection of the atmospheric refraction coefficient instead of separately using the atmospheric refraction reference coefficient; and the k value of each side is not required to be calculated, but the most appropriate k value applicable to the whole network is calculated according to related conditions, and the value has relatively high actual goodness fit, so that the applicability of the method is improved to certain degree.

The invention discloses a geographical surveying and mapping device convenient to move. The geographical surveying and mapping device comprises a tripod, a satellite antenna, an embedded device and a horizontal support frame, wherein the top of the horizontal support frame is movably connected with the top of the tripod through a rotating shaft; stereo cameras are arranged at two ends of the horizontal support frame; the satellite antenna is located between the two stereo cameras and is connected with the embedded device; the stereo cameras are used for shooting the current environment and obtaining geographical position information; the embedded device is connected with the stereo cameras and is used for transmitting the information; telescopic support legs are arranged at the bottom of the tripod; the tripod is also connected with rolling wheels. According to the geographical surveying and mapping device, the instruments and the tripod can be integrally pushed through the rolling wheels and a movable frame; the manpower is reduced; the movement of the surveying and mapping device is facilitated; the operator can rapidly judge whether the surveying and mapping device is in the horizontal position or not by observing bubbles in a horizontal pipe; the horizontality of the surveying and mapping device can be adjusted through the telescopic support legs; the surveying and mapping device is applicable to different types of places and is convenient and rapid to use.

A tube for an optical observation device, in particular for a microscope, with a viewing level that is linearly variable in length and / or height, wherein the tube has an optical light path, in which at least two optical elements are disposed, for example, deflecting elements. The tube can be designed, for example, as a swing-in tube, with a base part, wherein a deflecting element is disposed in the base part so that it can rotate around an axis of rotation, and with an eyepiece support that can swing in relative to the base part, wherein a deflecting element is disposed in the eyepiece support so that it can rotate around an axis of rotation. The optical elements may be disposed so that they can move independently of one another in the optical light path.

The invention discloses an observable and projectable full-circle multistage rainbow apparatus which comprises a light source support, a continuous white light source, a transparent medium ball, a transparent substrate, a substrate support and a base plate, wherein the light source support is fixed on the base plate, the continuous white light source is fixedly connected with the light source support, the substrate support is fixed on the base plate, the transparent substrate is fixed on the base plate, the single layer of the transparent medium ball is uniformly laid on the transparent substrate, the height of the continuous white light source is the same with the center of the transparent substrate, the continuous white light source lights up the transparent substrate, and the distance between the continuous white light source and the transparent substrate is adjustable. A common rainbow demonstration apparatus can not display real principles of a natural rainbow, has too much tools, is low in work efficiency and is limited by observation angles. The full-circle multistage rainbow apparatus clearly shows the real principles of a natural rainbow, improves rainbow generation efficiency, lowers labor intensity on a certain level, improves rainbow observation levels, and has promising market for school demonstration experiments and rainbow projection devices.

The invention discloses a hydraulic valve convenient for observing the liquid level, which comprises a valve body, a gate plate, a wedge, an observation frame, a support rod, a valve cover, a threaded rod, a turntable and a valve hole, and both ends of the valve body are fixed There are connecting flanges, and the connecting flanges are provided with mounting holes near the edge, the top of the threaded rod is fixed with a turntable, and the lower end of the threaded rod is threaded with a ram, and the ram is provided with a hole , the middle part of the valve hole is fixedly connected with a sealing plate, the surface of the sealing plate is fixedly connected with a rubber seal ring, and the valve body on both sides of the valve hole is fixedly connected with an observation frame, and the inside of the observation frame is close to the lower The end is sleeved with a wedge, and the upper surface of the wedge is fixed with a support rod, and the top of the support rod runs through the upper surface of the observation frame; through the observation frame fixed on the valve body on both sides of the valve hole, the inside of the observation frame The lower end is connected with a wedge, and the top of the wedge is fixed with support rods on both sides, which makes it easier to observe the water level index on both sides of the valve body during use.

The invention discloses a large field of view infrared low-light natural sense color fusion system, which includes a base, a horizontal rotating support frame movably installed on the base, and a signal processing integrated box fixed above the horizontal rotating support frame; A large-field infrared low-light natural sense color fusion system is installed in the processing integration box; the large-field infrared low-light natural sense color fusion system includes two channels for respectively collecting images of scene information in large airspace infrared and low-light bands Acquisition unit, and an image preprocessing unit for suppressing image noise signals and artifacts, improving low-light image details, and key targets in infrared images; the large-field infrared low-light natural sense color fusion system of the present invention not only improves The scene construction and comfortable observation level of the traditional infrared / low-light fusion system, and the increased detection space broaden the application field of the system.

The invention discloses an atmospheric refraction coefficient inverting method based on a trigonometric leveling network. The method comprises the following steps of acquiring trigonometric leveling network data; calculating the direct observation level difference hli and the reversed observation level difference h2i of each measured side in the network by the trigonometric leveling measuring method; calculating the number n of independent triangles in the network; calculating the sum Cj of the three sides of each triangle; calculating the weight Pj of each triangle in the network; calculating the level difference closure error omega j of each triangle; applying a constraint condition y; according to the relation between the constraint condition y and the atmospheric refraction coefficient k, drawing a curve graph; taking k value by using the curve graph and the constraint condition; and calculating discrepancy value delta i of the direct observation level difference and the reversed observation level difference, and finding out the k value which makes the y value minimum under the premise that the delta i and the omega j are not beyond limit. The method is more dynamic for the selection of the atmospheric refraction coefficient instead of separately using the atmospheric refraction reference coefficient; and the k value of each side is not required to be calculated, but the most appropriate k value applicable to the whole network is calculated according to related conditions, and the value has relatively high actual goodness fit, so that the applicability of the method is improved to certain degree.

The invention discloses a method for controlling a shallow water observation-level mini underwater robot. The method includes control construction and communication frame; by means of the method, a lower computer main control panel controls three underwater propellers to rotate, controls cameras to switch, controls a switch of an underwater light-emitting diode (LED) lamp and brightness of the LED lamp, and achieves various underwater automation functions (such as automatic depth keeping, automatic come-up and submergence and automatic advance); both-way communication between a deck unit and the underwater robot is achieved, so is communication between a main control chip of the underwater robot and a co-processor ATmega 8, a communication protocol relevant to communication between the underwater robot and the deck unit is formulated, the underwater robot can receive control instructions of the deck unit, and the deck unit can receive state information sent by the underwater robot. Besides, according to the method, feasibility of achieving automatic depth keeping on the basis of an incremental PID algorithm is discussed, and accuracy of automatic depth keeping is analyzed and proved through experimental verification machine data.

The invention discloses a method for measuring an opposite-direction observation level of a dual-observation unit composite level gage capable of effectively improving the level measurement accuracy and reliability. According to the method, the dual-observation unit composite level gage comprising a first single level gage and a second electronic level gage is adopted, and four-system opposite-direction observation is realized. The defect that the conventional composite level gage double system is unstable in opposite-direction measurement and poor in reliability is overcome, the influences ofobservation locality and random variation on the overall transverse level measurement are effectively avoided, the smoothness of transverse level measurement is improved, the level measurement reliability is ensured, the level measurement accuracy is greatly improved, and the effect from quantitative change to qualitative change is achieved.

The invention discloses an observation-level underwater robot camera. The camera can be mounted on an underwater robot and mainly used for observing growth conditions of fish, sea cucumber, conch andlike cultured under the water. A 13 megapixel high-definition camera of the Sony is adopted, eight LED lamp beads are arranged in the camera so that the camera can shoot under dark light environment;and round sheet glass is arranged at the front end of a shell of the camera, and an O-shaped sealing ring is used for sealing the matching part of the sheet glass and the shell, and an upper retainerring is arranged on a groove at the front end of the shell so as to fix the circular sheet glass. A connecting line penetrates from a counterbore in the middle of the rear end cover, the counterbore is sealed by using pouring sealant; the O-shaped seal ring is used for sealing the matching part of the rear end cover and the shell. The waterproof level of the camera can achieve 3MP.

The invention discloses an unmanned combat aircraft group encirclement control method imitating the hunting behavior of wolves, which is characterized in that: the method steps are as follows: step 1: initialize the motion model of the unmanned aerial vehicle; step 2: determine the observation level of wolves hunting roles; Step 3: Calculating the wolf pack leader-following target state observer; Step 4: Designing the encirclement control law of the leader wolf-slave wolf interaction mechanism; Step 5: Conversion of equivalent control instructions; Step 6: Outputting the UAV cluster encirclement control trajectory. The method of the present invention learns from the leader-follower interaction relationship in the opportunistic hunting strategy of wolves, and under the condition of limited detection and communication range, by enhancing the interaction of heterogeneous nodes, it maintains the connectivity and stability of cluster encirclement control under limited perception.

The invention discloses a shallow water observation-level streamline type small-size underwater robot control system. The shallow water observation-level streamline type small-size underwater robot control system comprises a main control panel module used for acquiring data of two rockers and electric quantity of a deck unit and communicating with an underwater robot; a deck unit main control module connected to the main control panel module through a video difference reception module, a video difference sending module, a first 485 communication module and a second 485 communication module to realize communication and used for controlling the deck control system of the underwater robot; the video difference reception module and the video difference sending module both used for partitioning continuous three-frame differential diagram and carrying out mathematical morphological processing for a moving target obtained through the partitioning so as to remove sending and reception of discontinuous and hollowed videos occurred after the image partitioning; the first 485 communication module and the second 485 communication module both used for judging 0 or 1 through high and low electric levels, wherein each protocol only define 01 arrangement mode and significance. In addition, the shallow water observation-level streamline type small-size underwater robot control system has relatively light quantity, is convenient to carry, and is easy as well as simple to handle.

The present invention discloses an experiment table for observing horizontal plane constant, belonging to the teaching device field. The objective of the invention is to solve the problem that the lower grade students are difficult to understand the horizontal plane probability. The experiment table comprises a base plate arranged at the desktop, two support telescoping rods arranged at the upper portion of the base plate and a swing case arranged at the upper ends of the support telescoping rods; the two support telescoping rods are respectively arranged at two sides of the swing case to realize the visual expression of the horizontal plane probability and allow the lower grade students to clearly and visually observe the horizontal plane so as to deepen the understand of the horizontal plane probability and facilitate the development of the education teaching.

The invention discloses a radiometer ground detection system and method. The system is used for testing an on-satellite receiver unit and an on-satellite digital control unit on the ground. The systemincludes a temperature measurement data input module (5), an analog temperature measurement data output module (6), an output module (7) of each channel voltage of an analog receiver and a data processing module (8). The temperature measurement data input module (5) is used for reading temperature measurement data output by the on-satellite receiver unit; the analog temperature measurement data output module (6) is used for simulating a temperature measurement circuit to output periodic data to the on-satellite digital control unit; and the output module (7) of each channel voltage of the analog receiver is used for simulating functions of the analog receiver to output cold air, over-the-ground and observation level signals of each channel for the on-satellite digital control unit to perform collection and testing. The data processing module (8) is used for receiving a data packet sent by the on-satellite digital control unit, and sending the data packet to an upper computer. The system has the advantages of being small in size, multiple in functions and high in universality.