453 results about "Single beam" patented technology

The invention discloses an off-line adjusting device and method for light spot position offset adjustment, and belongs to the technical field of optical precision adjustment. The device comprises a single-beam light-emitting direction adjusting device, a single-beam light-emitting position adjusting device and a multi-beam angle adjusting device which can be formed on the same off-line platform by configuring different detection units. The method comprises the following steps of: calibrating a light source by using the devices in sequence, and constructing an ideal light source assembly with accurate direction, accurate position and multi-beam parallelism; the whole device is installed to a complete machine system to serve as an absolute reference, and a complete machine optical element is adjusted to make a light spot reach a preset position; and finally, replacing with a customized light source and carrying out fine adjustment by taking the calibrated optical element as a reference. According to the method, decoupling of light source calibration and optical element calibration is achieved through the process of establishing the benchmark offline, transmitting the benchmark through the whole machine and customizing light source adaptation, the installation and adjustment precision, efficiency and repeatability are remarkably improved, and dependence on operation experience is reduced.

The invention discloses a beam switching antenna system based on a reconfigurable technology. The beam switching antenna system based on the reconfigurable technology comprises a multi-unit antenna array, a Nolan matrix feed network and a reconfigurable power divider. The reconfigurable power divider in the beam switching antenna system based on the reconfigurable technology can switch different working states, and the signal energy is further distributed by the Nolan matrix feed network, so that the output signal meets the amplitude and phase conditions of a single beam, a double beam or a wide beam to feed the multi-unit antenna array; therefore, flexible switching among a single beam, double beams and a wide beam is realized, and the method has the advantages of low system overhead, low power consumption, rich beam types and flexible switching. The method is widely applied to the technical field of wireless communication.

The invention relates to the technical field of marine remote sensing observation, in particular to a squint ATI-SAR multi-view sub-aperture focusing marine vector flow inversion method. The method comprises the following steps of observation of strabismus ATI-SAR loads, focusing of multi-view sub-apertures, inversion of multi-view HLOS flow velocity, overdetermined equation solving of vector flow and checking of internal and external consistency of the vector flow. Non-side-looking observation is adopted for the load, observability of components in the rail direction is enhanced through physical squint, and low cost of a single beam and system conciseness are kept; according to the method, the contribution of the azimuth component is in direct proportion to the squint angle sine, so that the along-track component far greater than the virtual squint can be obtained, the solvability of the equation is improved, and the inversion instability is reduced; visual and reliable information observation is achieved with small system burden, equipment investment is saved, large-scale vector flow on-orbit observation can be achieved, and engineering is easy to achieve. According to the method, three-step closed-loop processing is carried out, the bottleneck of the traditional technology is solved, and the engineering availability and the result robustness are broken through.

A lithium battery detection device based on BB optical pump magnetic imaging comprises a magnetic shielding cylinder and a substrate arranged in the magnetic shielding cylinder, and a laser, an optical lens system, an atomic gas chamber system, an array lens and an array photoelectric detector are sequentially arranged on the working face of the substrate from left to right; the atomic gas chamber system contains alkali metal atoms and buffer gas; a non-magnetic objective table for placing a lithium battery to be tested is arranged above the atomic gas chamber; according to the device, the array lens is adopted to split and focus a single beam of detection laser into small light spots which are respectively irradiated on different photoelectric detectors, and magnetic field information of a plurality of space point locations is detected at one time, so that the consistency and imaging quality of a subsystem are improved, and the system cost is saved.

The invention belongs to the technical field of bridge construction, and particularly relates to a single-point multiple-jack synchronous beam falling forced displacement method prestress applying method which comprises the steps that S1, a plurality of temporary supporting points are arranged beside a permanent support, and a self-locking type beam bearing mechanism is installed on each temporary supporting point; meanwhile, a hydraulic jack is arranged at each temporary supporting point, the multiple hydraulic jacks are connected to a PLC integrated hydraulic synchronous control system through hydraulic pipelines, and synchronous linkage mechanisms are arranged among the multiple hydraulic jacks. According to the single-point multiple-jack synchronous beam falling forced displacement method prestress applying method, when an inner jacking pipe sleeve pushes a supporting cushion block to ascend and descend, through meshing of a self-locking gear and two self-locking racks, a secondary telescopic block can be forcibly driven to move synchronously, so that continuous stretching and retracting of a bearing beam are achieved, the cushion block does not need to be manually replaced after single beam falling, and the working efficiency is improved. The system automatically adjusts the height to meet the multi-stroke circulating beam falling requirement, and the construction efficiency is improved.

The invention provides an integrated measurement device, a beam parameter quality control method and related equipment, relates to the technical field of particle radiotherapy, and is used for rapidly measuring beam parameters of pencil beam scanning points in arc proton therapy in real time. Comprising a plurality of measurement units which are arranged at intervals along a beam transmission direction, the plurality of measurement units are periodically and repeatedly arranged to form a two-dimensional orthogonal sampling grid, and time-space distribution data of a beam cross section are synchronously acquired through one-time beam output; the analysis module is used for processing the beam parameters output by the signal acquisition and processing module in real time, and the beam parameters comprise the scanning point position, the beam spot size, the charge quantity and the range; beam parameters of a pencil beam scanning point can be rapidly measured in real time, and accurate and efficient measurement is ensured; according to the matched beam parameter quality control method, the accuracy and reliability of arc proton treatment are improved through operations such as multi-angle measurement, parameter correction, quality control interval optimization and real-time dynamic adjustment.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of one or more beam failure detection reference signal sets corresponding to a list of component carriers. Whether a component carrier is included in the list or whether a beam failure detection reference signal set of the one or more beam failure detection reference signal sets is applicable to the component carrier, or both, may be based on whether the component carrier is of a first type configured for a single beam failure detection reference signal set or is of a second type configured for multiple beam failure detection reference signal sets. The UE may monitor one or more component carriers included in the list for beam failure using the one or more indicated beam failure detection reference signal sets.

The utility model relates to a folding beam structure. The folding beam structure comprises two horizontal beam modules which are fixedly connected, a first reinforcing rib and a second reinforcing rib, the horizontal beam module comprises a first connecting beam and a second connecting beam; the body length direction of the first connecting beam is parallel to that of the second connecting beam; the first connecting beams of the two horizontal beam modules are connected, and a preset angle is formed between the body length directions of the two first connecting beams; the second connecting beams of the two horizontal beam modules are connected, and a preset angle is formed between the body length directions of the two second connecting beams; the two ends of the first reinforcing rib are connected with the two first connecting beams respectively, and the two ends of the second reinforcing rib are connected with the two second connecting beams respectively. Compared with the arrangement of a single beam, the arrangement of the two connecting beams can effectively disperse pressure, the strength and hardness of the whole horizontal beam module in a bending area are improved, bending and shearing strengthening is further carried out on the two connected horizontal beam modules under the action of the two reinforcing ribs, and the anti-seismic bearing capacity is effectively improved.

An electron beam is directed at a workpiece on a stage with a first astigmatism applied. The electron beam reflected off the workpiece is detected and an image of the workpiece with the first astigmatism applied is generated. An autofocus model is applied to the image to determine a focus offset for the image with the autofocus model.

The invention relates to the technical field of bridge tilting prevention, in particular to a highway municipal bridge single beam frame tilting prevention reinforcing device which comprises a plurality of reinforcing inclined struts fixedly connected to the inner side of a single beam frame reinforcing base, and two bearing pressure early warning seats fixedly mounted on the inner side of the single beam frame reinforcing base. The upper ends of the two bearing pressure early warning seats are both fixedly connected with a protection ring sleeve, and a main supporting anti-inclination assembly is arranged at the upper ends of the two bearing pressure early warning seats in a penetrating mode, so that when the anti-inclination reinforcing device is arranged on the highway municipal bridge single beam frame, the stress direction can be adjusted in time in the anti-inclination process of the bridge single beam, and the anti-inclination effect of the bridge single beam is improved. The stress uniformity of the device is guaranteed, the stability after the single beam is erected is improved, the device is prevented from being damaged due to stress on one side, in the using process, the overall stress buffering effect can be improved, the device is prevented from inclining after buffering, the overall using effect of the anti-inclination reinforcing device for the highway municipal bridge single beam frame is improved, and the service life of the anti-inclination reinforcing device is prolonged.

The invention discloses an ultrafast electron diffraction system based on 300kV direct current acceleration and radio frequency compression and a diffraction imaging method, and solves the problems that the time resolution of the current keV ultrafast electron diffraction system is insufficient due to the space charge effect, and the time-varying electric field generated by a radio frequency compression cavity is used for carrying out time compression on the beam bunch length of an electronic pulse; and the electronic pulse energy is low. According to the invention, femtosecond laser is split, one beam of light generates an ultrafast electronic pulse by using an ultrafast electron generation module based on 300kV direct current acceleration, the energy of the ultrafast electronic pulse is relatively high, and then the pulse width of the ultrafast electronic pulse is compressed by using a radio frequency compression module; the pulse broadening caused by the space charge effect of the ultrafast electronic pulse is effectively inhibited, the time resolution below hundred femtoseconds can be realized, meanwhile, the charge quantity of a single beam of ultrafast electronic pulse reaches 16fC (105e-), and the method can be used for ultrafast kinetic research of irreversible materials.

Disclosed are a transmission method and a related device, comprising: a terminal device receiving first indication information, the first indication information being used for indicating the terminal device to switch from a first communication mode to a second communication mode, the first communication mode indicating the terminal device to communicate with a plurality of transmission nodes by using a plurality of beams, the second communication mode indicates that the terminal equipment adopts a single beam to communicate with a single transmission node; the terminal device determines a first beam according to the first indication information; and the terminal device measures or transmits the reference signal according to the first beam, or transmits the channel. Resource waste can be reduced, and expenditure is saved.

The invention belongs to the technical field of underwater measurement, and provides a multi-beam underwater measurement method and system. The method comprises the following steps: performing low-resolution detection on a target water area by adopting a single-beam mode, and obtaining the water depth and terrain complexity of the target water area based on obtained first detection data; screening to obtain a plurality of interference signal identification models based on water depth and terrain complexity, taking each interference signal identification model as a base model, and integrating all the base models into an integrated model; performing high-resolution detection on the target water area by adopting a multi-beam mode, performing interference signal identification on the obtained second detection data by using an integrated model, and attenuating or removing the identified interference signal to obtain third detection data; and measuring underwater topographic data of the target water area based on the processed third detection data. According to the invention, multi-beam interference signals can be accurately identified, and the accuracy of underwater topographic data obtained through detection is ensured.

The invention relates to the technical field of water supply and drainage robots, and discloses a submersible type multifunctional water supply and drainage robot which comprises a robot body and an auxiliary operation unit. Two groups of water pumps are arranged in the main body, and multiple groups of drainage through holes are formed in two sides and the bottom of the main body and are communicated with the water pumping cavity to form a low-resistance multidirectional water taking and drainage channel; a scanning sonar, a single beam, an electronic compass, a tilt angle sensor, a harmful gas detection sensor, a camera, a lighting lamp and the like are arranged, the system cooperates with an electric control system, remote and autonomous operation is supported, path planning is conducted based on environment perception, and the unit time drainage efficiency in a complex environment is improved in cooperation with a pump set. The auxiliary operation unit is a mechanical arm installed on the main machine body and sequentially connected with a first connecting arm, an angle adjusting arm and a second connecting arm, the tail end of the auxiliary operation unit is provided with a clamping mechanism and a crushing mechanism, and the auxiliary operation unit is used for obstacle clearing and narrow position fixed-point crushing and guarantees continuous operation and safety. The method is suitable for flood prevention and fighting, urban inland inundation, mine, underground pipe gallery, tunnel drainage and other scenes.

A measuring device (24) has two faceted mirrors (20, 21), the individual mirrors (21) of which can be tilted via respective tilting actuator devices, each with at least one tilting actuator (23a). The two faceted mirrors (20, 22) can be used as illumination optics for a projection exposure system. The individual mirrors (23) of the second faceted mirror (22) are part of a transmission optic via which the individual mirrors (21) of the first faceted mirror (20) can be projected onto an object field (5) illuminated by the illumination optic (4). The measuring device has a measuring light beam selection device (27) by means of which at least one measuring light beam (25i) can be selected, which is guided over at least one of the individual mirrors (21, 23) of the faceted mirrors (20, 22). A detection device (28) of the measuring device serves to detect the at least one measuring light single beam (25i).A control unit (29) of the measuring device is in signal communication with the tilting actuators of the object-side measuring light beam selection device (27) and the detection device (28). This results in a measuring device with increased operational flexibility.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report an initial capability to maintain latency conditions and a number of supported beams (e.g., a threshold number of beams the UE can support for relaying downlink communications such as synchronization signal blocks (SSBs)). A network entity may then transmit multiple SSBs directly to the repeater (e.g., on the same beam). The repeater may relay the SSBs across multiple beams to provide service to a coverage area. After relaying signaling between served UEs and the network entity, the repeater may transmit a report requesting a specific (e.g., improved or more accurate) number of beams (e.g., more beams or fewer beams than the number of SSBs initially provided). Upon receiving an updated configuration of a number of beams, the repeater may receive more SSBs on a single beam, and relay SSBs on the updated number of beams.

The invention relates to the field of nano science and nano technology, in particular to a low-power particle capture and local thermal detection method and device based on tip-enhanced Raman optical tweezers, under laser irradiation, directional optical force is generated through an enhanced electric field between a nano tip and metal particles, and capture of the metal particles is achieved; raman scattering on the surface of the needle tip can be excited through focused laser, and the local temperature of the needle tip can be obtained by analyzing the change of a Raman characteristic peak. According to the method, directional optical force is generated through an enhanced electric field between the needle tip and the metal particles to capture the metal particles, the problem that the metal particles cannot be captured by single-beam 532 nm laser is solved, the power density of captured particles is reduced, and the adverse effect of the heat effect on capture is reduced. The method also can amplify the Raman signal of the needle tip to realize Raman detection of a local position, realizes temperature monitoring at the capture position, and lays a foundation for exploring the influence of the thermal effect on the capture process.

The invention discloses a micro-droplet long-distance optical force traction system based on a nanometer optical fiber. The system comprises an optical fiber laser, a nano optical fiber, micro-droplets, an imaging optical element and an imaging camera, the nanometer optical fiber comprises a first optical fiber non-tapering area, a second optical fiber non-tapering area, a first optical fiber taper area, a second optical fiber taper area and a uniform waist area located in the middle. And the micro-droplets coat the uniform waist region of the nano optical fiber. The transmission loss of the nanometer optical fiber is low, the total length can reach the meter level, a transmission light field in the uniform waist area of the nanometer optical fiber interacts with the micro-droplets, forward scattering is enhanced through momentum exchange, and therefore long-range optical traction force is applied to the micro-droplets. According to the invention, the problem of short luminous traction action distance (millimeter level) based on a single light beam in the prior art is solved, and the device has the advantages of long-distance control (centimeter to meter level), high precision, high flexibility, good stability and good biocompatibility, and can be applied to the biochemical fields of cell control and sorting, biological detection, micro-droplet reaction and the like.

The invention discloses an unknown environment mapping method for a single-beam laser of aircraft, which belongs to the field of three-dimensional map reconstruction technology. Firstly, the data collected by a single-beam LiDAR is aligned with the timestamp of the stepper motor, and the obtained point cloud data is filtered and matched to obtain three-dimensional map information. The pose of the aircraft is estimated by the wheel odometer and IMU, and the loop detection is performed to reduce the cumulative error and update the three-dimensional map information in real time. The frontier search algorithm is used to determine the target point of the aircraft flight, the A* algorithm is used to plan the path trajectory, and the B-spline curve optimization algorithm is used to make the trajectory of the aircraft smoother. The control command is sent to the aircraft, and then the global three-dimensional map of the unknown environment is obtained.

A terrace canopy is provided, comprising a frame including a first and second beams. The frame forms a plane being substantially horizontal with respect to the ground when the terrace canopy is installed. Each beam of the frame comprises a gutter with a collecting wall for collecting rainwater, including a depression for reducing dirt buildup. The beam and gutter form one single beam profile piece, so the gutter is an integral part of the beam. The first and second beam, in particular each beam of the frame, have the same profile.

The invention discloses an elliptically polarized light atom magnetometer device and method for eliminating optical frequency shift, and the device employs a laser and an integrated device to generate elliptically polarized modulated light with symmetrical and detuned frequency as a laser source of a single-beam atom magnetometer, and achieves the measurement of a to-be-measured weak magnetic field under a modulated magnetic field. According to the invention, two beams of pulse modulation light whose detuning amounts are symmetrical about the center frequency of alkali metal atoms and the phase difference is pi are combined into one beam, and the beam is converted into modulated elliptically polarized light through a polarization device to pump and detect the alkali metal atoms, so that a virtual magnetic field generated by optical frequency shift in the coherence period of the alkali metal atoms can be eliminated through multiple times of rapid inversion; modulation of elliptically polarized light frequency is converted into modulation of an optical rotation angle through interaction of alkali metal atoms and light, and finally, an output signal containing information of a weak magnetic field to be measured is extracted from an optical rotation angle signal by using polarization difference detection and difference frequency demodulation technologies, so that an optical frequency shift error can be eliminated; and meanwhile, low-frequency noise caused by pumping light frequency fluctuation is suppressed, and the device has the characteristic of high integration and the advantage of miniaturization.

The invention discloses a single-beam crane, and belongs to the field of cranes, the single-beam crane comprises an equipment main body and a winding drum assembly, a plurality of steel wire ropes are mounted on the winding drum assembly, two rails are arranged on the equipment main body, an adjusting assembly is arranged at the lower end of the winding drum assembly, a driving assembly is arranged on the winding drum assembly, and a cleaning assembly is arranged on the winding drum assembly. The adjusting assembly comprises a connecting ring fixedly installed at the lower end of the winding drum assembly, a shell is fixedly installed at the lower end of the connecting ring, a supporting component is arranged in the shell, and two push plates are installed through the supporting component. The effects of sharing loads and improving the stability of heavy objects transported by equipment can be achieved when the load of the equipment is increased, and meanwhile the effects of automatically smearing lubricating oil on the surfaces of the wheels and the rail, reducing the friction force between the wheels and the rail and prolonging the service life of the wheels and the rail can be achieved through cooperation of the multiple cleaning rollers and the lubricating mechanism.

Various embodiments comprise a system to sense magnetic fields along x, y, and z measurement axes of a single-beam magnetometer. The x-axis is parallel to the propagation direction of the magnetometer light beam while the y and z axes are orthogonal to the light beam and to each other. The system comprises processing circuitry that processes the signal from the magnetometer to generate a z-axis control signal for a z-axis compensation coil. The processing circuitry processes the signal to generate a y-axis control signal for a y-axis compensation coil. The processing circuitry modifies y-axis current to drive the y-axis compensation coil based on the y-axis control signal and a modulation pattern. The processing circuitry delivers the modified y-axis current to the y-axis compensation coil to mitigate background magnetic field. The processing circuitry estimates magnetic field components along the x-axis based on the z-axis control signal and the modulation pattern.

The invention relates to the technical field of micro-fluidic chips, and discloses a multi-fluid effect synergistic three-dimensional single-row focusing micro-fluidic chip and a method for single-line focusing of polystyrene microspheres by using the micro-fluidic chip, the micro-fluidic chip comprises a sample liquid inlet, one end of the sample liquid inlet is provided with an inertia focusing link, and the other end of the sample liquid inlet is provided with an inertia focusing link; a tapered flow guide cone structure is arranged between the inertial focusing link and the sample liquid inlet and is used for inhibiting the initial dispersion and diffusion trend of particles at the sample liquid inlet; the bionic gradient height structure is positioned at one end, far away from the tapered flow guide cone structure, of the inertial focusing link and is used for focusing and compressing the particles in the vertical direction; a sheath fluid focusing area is arranged at one end, far away from the inertial focusing link, of the bionic gradient height structure, and a sheath fluid inlet and a chip mixed liquid outlet are sequentially formed in one end, far away from the bionic gradient height structure, of the sheath fluid focusing area. According to the invention, efficient three-dimensional centered arrangement is realized, dynamic convergence of a particle trajectory from a dispersion state to a central single beam is realized, and a digital focusing regulation capability is realized.

The invention provides a signal transmission method and a communication device. The method comprises the steps that a configurable intelligent surface RIS device receives a signal from at least one first communication device; the signal is sent to at least two second communication devices through multiple beams, and the beam vector of the multiple beams is determined according to the beam vector of the single beam corresponding to each second communication device in the at least two second communication devices. Based on this, multiple second communication devices can be served at the same time through the RIS device, and the system capacity is improved.

The invention discloses an optomagnetic modulation method and device for enhancing a single-beam free precession atom magnetometer signal, which is based on a synchronous optical pumping technology and a radio frequency magnetic field pulse control technology, controls the spin polarization of atoms through optomagnetic modulation and excites a free precession signal, so that more spin polarization components participate in free precession, and the free precession of the atoms is enhanced. And all-around signal enhancement of the single-beam free procession atom magnetometer is realized. The free precession signal is enhanced, the signal-to-noise ratio is improved, further improvement of the sensitivity of the single-beam free precession atom magnetometer is facilitated, and further application of the single-beam free precession atom magnetometer in the field of quantum precision magnetic field measurement in the future is facilitated.

The invention provides a swinging and moving type vertical splicing construction method for a side span beam section. The swinging and moving type vertical splicing construction method comprises the following steps that (1) a single-section beam section of a side span is hoisted from a transport ship located at a bridge site and swung and moved to the side span side of a tower column; (2) turning over a single beam section from a horizontal state to a vertical state, lowering and storing a beam; (3) the step (1) and the step (2) are repeated, the single beam sections are hoisted to the sliding support section by section, and after the tail beam section of the side span beam sections of the same span is turned to be in the vertical state from the horizontal state, vertical splicing installation is conducted; (4) the single-section beam section slides to the position under the beam section hoisted by the vertical hoisting station, the beam section is lowered to the beam section located on the sliding support to be in butt joint, the beam section which is in butt joint into a whole is lifted upwards, vertical splicing of the single-span beam section is completed, and the side-span beam section in the vertical state is adjusted to be in the horizontal state; (5) pulling one end of the side span beam section to the pier top of the auxiliary pier, and connecting the other end of the side span beam section through a sling; and (6) repeating the steps until the construction of the cable-free area girder section of the bridge is completed.

This invention relates to a closed-loop measurement device and method for the angular velocity of a micro-gyroscope based on a single-beam optical trap, belonging to the field of inertial navigation technology. It includes a vacuum cavity, a micro-gyroscope, an optical trap levitation module, a rotation detection module, and a feedback control module. The micro-gyroscope is placed inside the vacuum cavity, and the optical trap levitation module is positioned below the vacuum cavity. The optical trap levitation module can converge a first laser beam from bottom to top into the vacuum cavity to form a vertical optical trap, thus leviting the micro-gyroscope. The rotation detection module can horizontally converge a second laser beam onto the micro-gyroscope and split the second laser beam, after its polarization direction has been changed by the rotating micro-gyroscope, into two laser beams with different intensity ratios. The feedback control module can analyze the intensity ratio of the two laser beams and provide feedback control to the rotational angular velocity of the micro-gyroscope. This invention features high bandwidth, low noise, and high accuracy.

The utility model relates to the technical field of microfluidics, and discloses an inertia micro-fluidic chip for cross-scale packaging, which comprises a first water phase channel, a second water phase channel, a mixing channel and an oil phase channel, the output ends of the first water phase channel and the second water phase channel are communicated with the mixing channel in an intersection manner; the oil phase channel is of a closed-loop structure, and the mixing channel penetrates through the output end of the oil phase channel and communicates with the oil phase channel. The first water phase channel can focus introduced agrobacterium cells, so that the agrobacterium cells can enter the next part of reaction channels in a regular arrangement state. The accumulation of the change along the channel can cause the new inertial migration behavior of the agrobacterium, compared with a straight channel, the number of gathering positions and the required channel length can be effectively reduced, and meanwhile, the agrobacterium is focused into a single beam, so that the agrobacterium can be converged with soybean cells in a regular arrangement state.

Systems, devices, and methods including a modified Herriot cell comprising: a laser configured to generate a single beam; a partially transmissive region (PTR) disposed in at least one of: a first mirror and a second mirror, where a first portion of the single beam is received through the PTR, and where a second portion of the single beam is reflected by the PTR; a first detector disposed proximate the PTR, where the first detector receives the first portion of the beam, and where the first portion of the beam has traveled a first path length from the laser to the first detector; and a second detector disposed proximate the exit hole, where the second detector receives the second portion of the beam, and where the second portion of the beam has traveled a second path length from the laser to the second detector.