215results about How to "Efficient reception" patented technology

The invention discloses a communication and positioning integration method for an intelligent machine group. The method is used for cooperation of multiple intelligent robots. The method comprises the steps that an intelligent robot constructs a query vector from radar point cloud data sensed currently through medium-term feature extraction and interaction module points, space importance information is calculated, and medium-term features are extracted for communication interaction; the base station clusters the intelligent robots through an optimal communication link construction module, allocates optimal communication links among the robots in clusters, and complements communication links of boundaries among the clusters; and the intelligent robot processes a middle-term feature time sequence sent by the cooperative positioning object and a feature map sequence collected by the intelligent robot through a time sequence relative positioning module, and the relative position relation between the robots is obtained. According to the method, the utilization of time sequence information is considered, the real-time operation under the limitation of objective communication conditions is realized, the cross-device features are fused in the space-time dimension to realize efficient and high-precision continuous cooperative positioning, and the registration precision is improved.

The invention discloses an intelligent self-adaptive cleaning system and method for a photovoltaic module, and mainly solves the problems that the cleaning effect of a photovoltaic module cleaning system on stains (such as bird droppings and oil stains) with strong adhesive force and fine dust particles is limited, and it is difficult to ensure that the surface of the module keeps good cleanliness all the time. The cleaning system comprises an environment sensing module used for detecting the cleaning state of the photovoltaic module, an intelligent cleaning module connected with the environment sensing module and used for executing the cleaning function, and self-adaptive control connected with the environment sensing module and used for controlling the intelligent cleaning module. And the energy recovery module is connected with the intelligent cleaning module and is used for realizing energy recovery and feeding back power supply to the environment sensing module. By means of the design, the multi-sensor fusion environment sensing technology and the intelligent cleaning technology are combined, the stain type and the pollution degree can be more accurately recognized, a targeted cleaning mode is adopted, and compared with a traditional cleaning technology, the cleaning effect is remarkably improved.

The invention relates to the technical field of optical engines, and discloses an optical engine packaging structure with a detachable optical fiber array, the optical engine packaging structure comprises a substrate, an electric chip, a silicon optical chip, a fixed seat and the optical fiber array, the electric chip, the silicon optical chip and the fixed seat are all mounted on one side of the substrate, and the electric chip and the silicon optical chip are electrically connected with the substrate; a groove is formed in the side face of the fixing base, an adapter block is installed at the end of the optical fiber array, the adapter block is detachably installed in the groove in the direction perpendicular to the side face of the substrate, the adapter block comprises a limiting section and an overhanging section which are fixedly connected, and the limiting section is in concave-convex fit with the groove; the overhanging section protrudes towards one side close to the silicon optical chip, the overhanging section and the silicon optical chip are opposite up and down, a lens structure is further installed between the end face, corresponding to the silicon optical chip, of the overhanging section and the silicon optical chip, and the lens structure is in light conduction connection with the optical fiber array and the silicon optical chip; the fixing base is detachably provided with a clamping piece, and the clamping piece and the switching block are in fastening fit in the direction perpendicular to the side face of the base plate.

The invention discloses an integrated optical diversity receiving device, solves the problem of high power consumption when the influence caused by phase distortion and light beam pointing error is corrected in the existing free space optical communication, and belongs to the field of optical communication. The method comprises the steps that free space light focused by a lens is received by a multimode / few-mode optical fiber; the multi-mode light beams received by the multimode / few-mode optical fiber enter the photon lantern; the photon lantern is coupled to the single-mode fiber array after mode demultiplexing; each light beam in the single-mode fiber array enters a polarization beam splitting rotary combiner through an edge coupler; the polarization beam splitting rotation combiner performs transverse electric wave (TE) and transverse magnetic wave (TM) mode separation on the entered light beam, then rotates the separated TM polarization state light to a TE polarization state, combines the rotated TE polarization state light and the separated TE polarization state light, and then enters the MZI network; the MZI network is used for realizing optical coherent beam combination; a control circuit controls the merging of the light beams in the MZI network.

The invention discloses a listening wake-up circuit and wake-up method for an infrared signal and an infrared remote control system, and the listening wake-up circuit comprises a signal conversion circuit which is used for receiving the infrared signal and converting the infrared signal into a modulation signal; the detection amplification circuit is used for rectifying and amplifying the modulation signal and outputting a digital signal; and the infrared frame detection state machine is used for receiving the digital signal, judging whether the digital signal accords with a preset infrared frame structure or not, and outputting an effective level of a wake-up signal when the digital signal accords with the preset infrared frame structure so as to wake up the micro-control unit. By adopting the technical scheme, the power consumption required by infrared data receiving can be reduced.

The embodiment of the invention provides a downlink service sending method and device, a downlink service receiving method and device, a storage medium and an electronic device. The downlink service sending method comprises: an optical line terminal (OLT) shares a downlink time division scheduling result of a downlink service with an optical network unit (ONU) according to a first specified mode, the downlink time division scheduling result at least comprising sending moments of one or more downlink services; and the OLT sends a downlink service according to the downlink time division scheduling result. According to the method, the problem that the optical network unit cannot efficiently receive the downlink service sent by the optical network terminal is solved, and the technical effect that the optical network unit can efficiently receive the downlink service sent by the optical network terminal is achieved.

The invention discloses a multi-reflection cavity enhanced Raman system and a use method. The multi-reflection cavity enhanced Raman system comprises a concave mirror, a converging lens and an optical fiber bundle, the optical fiber bundle comprises a plurality of optical fibers which are horizontally arranged, a converging lens, a parallel lens, a reaction part and a concave mirror are distributed at the input end of each optical fiber, and a first lens and a first retroreflector as well as a second lens and a second retroreflector are arranged at the two ends of the reaction part. Then the laser signal reacts with the to-be-detected gas to generate a Raman signal, a part of the Raman signal is reflected by the concave mirror, and then the Raman signal is converged in the optical fiber by the converging lens and the parallel lens to be received; raman signals excited on the horizontal plane are matched with the horizontally arranged optical fibers, so that the receiving effect is good; the intensity of the laser signal at the reaction position is high, so that the intensity of the generated Raman signal is high. Therefore, the design has a relatively good receiving effect on the Raman signal, and the intensity of the received Raman signal is relatively high.

The invention discloses a secure communication method based on artificial noise in an unmanned aerial vehicle NOMA network. The communication process has two time slots. In a first time slot, a base station adopts an NOMA mechanism to send a signal to an unmanned aerial vehicle, meanwhile, the unmanned aerial vehicle selects one antenna to send an artificial noise signal to interfere with an untrusted remote user, the remaining antennas receive the signal, and a near user also sends the artificial noise signal; in a second time slot, the unmanned aerial vehicle adds the artificial noise signal and the near user signal of the first time slot by means of exclusive OR, then superposes the obtained signal and the far user signal by means of an NOMA mechanism, and finally reselects one antenna to send the superposed signal; then the NOMA user obtains a corresponding signal to interference plus noise ratio or a signal to noise ratio according to the received signal, and calculates a system outage probability and an eavesdropping probability; the method can effectively weaken the eavesdropping capability of the untrusted user, basically does not affect the untrusted user to receive the own message, and helps to solve the problem of potential safety hazards in an actual unmanned aerial vehicle cooperative NOMA network communication scene.

The present disclosure relates to a method performed by a user equipment (UE) in a wireless communication system. In particular, the method comprises the steps of: receiving information on a plurality of measurement resources corresponding to a multi-transmit and receive point (M-TRP) from a base station (BS); calculating channel state information (CSI) related to coherent joint transmission (CJT) based on M-TRP based on the plurality of measurement resources; and transmitting the CSI related to the CJT based on the M-TRP to the BS, in which the number of CSI processing units (CPUs) for calculating the CSI related to the CJT based on the M-TRP is determined based on the number of channel measurement resources (CMRs) among the measurement resources.

The invention provides a flywheel energy storage system with an electromagnetic coupler, which comprises a motor, a flywheel rotor, the electromagnetic coupler, a frequency converter and a generator, and is characterized in that the motor is connected with the flywheel rotor to drive the flywheel rotor to rotate, the electromagnetic coupler comprises an outer rotor and an inner rotor, and the outer rotor sleeves the inner rotor and is spaced from the inner rotor; the flywheel rotor is in transmission connection with the inner rotor, the inner rotor generates a rotating magnetic field to drive the outer rotor to rotate, and the frequency converter is connected with the outer rotor to change the current frequency of the outer rotor so as to change the magnetic field rotating speed matched with the current, so that the mechanical rotating speed of the outer rotor is kept constant. The generator generates power, accesses the power grid and inputs electric energy with stable frequency into the power grid, the requirement of power transmission to the power grid is met, power electronic devices are not needed, rotational inertia in the power grid can be improved, necessary voltage and frequency support is provided for the power grid, and the capacity of the power grid for efficiently accepting new energy is improved.

The invention discloses a buckle type self-power-taking wireless communication current transformer which comprises a buckle type current transformer module, an induction power-taking module, a discharge control module, a sampling compensation module and a wireless communication module. The buckle type current transformer module is used for inducing current from the high-voltage power transmission line; the induction electricity taking module induces energy from a high-voltage transmission line through an electricity taking CT, outputs stable direct current after rectification, filtering and voltage stabilization processing, and supports lithium battery charging and energy storage at the same time. And the discharge control module adopts a hysteresis comparator design, so that the safe operation of a post-stage circuit is ensured. The sampling compensation module accurately samples and compensates the current signal, and transmits the data to the wireless communication module in real time. The wireless communication module takes an STM32 microcontroller and an NBIOT communication module as a core, supports low-power-consumption and long-distance data transmission, realizes efficient data exchange and fault alarm through an MQTT protocol, simplifies equipment installation, and is suitable for a real-time monitoring scene of a high-voltage transmission line.

The invention discloses a wireless light transmission method for an unmanned aerial vehicle. The wireless light transmission method comprises the following steps: S100, adopting an LD light source with a tail fiber as a signal source to send a signal at a sending end; s200, when the system tracks and aligns, a variable-focus optical fiber collimator of an optical fiber light outlet is rotated and / or rotated to adjust, zooming is achieved, the light emitting angle of a light source is changed, and then the system adapts to signal transmission of different distances and different angles; s300, taking a large-view-field MPPC array as optical signal receiving equipment at a receiving end, and calling a built-in multi-array-element channel combined likelihood receiving algorithm for receiving based on the jittering of the unmanned aerial vehicle in the receiving process; the invention further discloses an unmanned aerial vehicle wireless light transmission system. According to the technical scheme, alignment control is more flexible, a tracking system is simpler and more convenient, convergence, collimation and divergence of light velocity are achieved, different communication requirements of high-speed communication, long-distance communication and large-angle communication are met, efficient receiving of an unmanned aerial vehicle optical communication system is achieved, and the performance of long-distance outdoor optical communication is remarkably improved.

The invention relates to a multi-scene Internet of Things equipment access method and system, and belongs to the technical field of Internet of Things equipment access. And establishing an association relationship according to a preset corresponding relationship of the fields between the communication protocols. When data sent by equipment in a third-party platform is received, the unique product identifier and the unique equipment identifier are obtained through the incidence relation, then the obtained result is compared with the unique product identifier and the unique equipment identifier which are pre-defined in the platform and correspond to the equipment, and if the obtained result is consistent with the unique product identifier and the unique equipment identifier, the equipment is not identified. And if yes, extracting the data uploaded by the equipment according to the association relationship. According to the invention, through the preset association relationship, the Internet of Things platform can effectively receive the data sent by the Internet of Things equipment in other platforms.

A UE according to an embodiment may receive a configuration of a plurality of first TDRA entries of each cell for individual scheduling of each cell, receive a configuration of a plurality of second TDRA entries including TDRA information for a plurality of cells through each entry for multi-cell scheduling, and receive DCI for multi-cell scheduling through a PDCCH, the DCI for multi-cell scheduling provides one TDRA field for one or all of at least two cells scheduled together, the value of the one TDRA field being related to one of a plurality of second TDRA entries, and TDRA information of the plurality of cells included in each of the plurality of second TDRA entries may be configured based on the plurality of first TDRA entries configured for individual scheduling of the respective cells.

The embodiment of the utility model discloses a TOF camera module and mobile equipment, the TOF camera module comprises a light source body, a detector body and a photochromic layer, the light source body is used for emitting a laser pulse signal to a target object, and the detector body is used for receiving a target light signal reflected by the target object; the photochromic layer is located on a receiving path of the detector body and is used for attenuating the intensity of ambient light and target light signals. The photochromic layer is arranged on the receiving path of the detector body, and the photochromic layer attenuates the intensity of the ambient light and the intensity of the target light signal in the process that the detector body receives the target light signal, so that the saturation effect of the receiving end of the detector body is relieved. More specifically, the influence of ambient light on the detector body is attenuated through the photochromic layer, so that the detector body can receive a target light signal more effectively, and the distance measurement performance such as the detection distance and the detection precision of equipment is ensured.

The present invention relates to the technical field of remote control devices, specifically a remote control device for an intelligent switch cabinet, comprising a switch cabinet body and a control device body, wherein the control device body is fixedly installed at the left end inside the switch cabinet body, and is characterized in that: a protective mechanism is arranged outside the control device body, and the left end inside the switch cabinet body is fixedly connected to a fixed bottom plate, and a protective cover is arranged above the fixed bottom plate, and an exhaust mechanism is arranged below the control device body. The present invention provides a protective mechanism outside the device, thereby effectively protecting the outside of the control device body, placing it in a relatively independent environment, and effectively avoiding the influence of other external factors such as dust on the control device body, so that it cannot receive signals normally, and the protective mechanism can be fixed when the protection is released, so that workers can perform subsequent maintenance conveniently and quickly, and effectively increase the protectiveness of the device.

The invention relates to an invisible pickup noise reduction earplug and method, and relates to the technical field of noise reduction, the invisible pickup noise reduction earplug comprises a shell, a noise reduction structure, a power supply structure and an invisible pull-out structure; the shell is matched with an ear canal in appearance and is provided with a mounting hole; the noise reduction structure is arranged in the shell and comprises a sound receiving unit, an ARM processing unit and a sound production unit which are electrically connected in sequence; the power supply structure is electrically connected with the ARM processing unit and is used for supplying power to the noise reduction structure; the invisible pull-out structure is mounted at the mounting hole, the invisible pull-out structure comprises a protruding part, and at least part of the protruding part is arranged outside the shell. The device has the effect of being convenient to take out.

The application belongs to the technical field of power system automation and artificial intelligence application, and is a power supply service AI assistant system based on whole-process time limit early warning, characterized by comprising: a work order access module, which is used for receiving fault work orders from a 95598 customer service system and an active repair system; a work order execution module, which automatically distributes work orders to the terminals of repair personnel in corresponding grids and records the time of distributing work orders; a time limit rule library, which is used for storing time limit thresholds of each link; a whole-process early warning module, which is used for monitoring the flow state of work orders in each link; and a data feedback module, which is used for recording time limit execution data of each work order in the whole process, generating an overtime risk analysis report, and providing data support for parameter optimization of the time limit rule library. The problems of insufficient whole-process time limit control of fault repair work orders, single follow-up mechanism and process overtime of repair personnel caused by on-site factors in the prior art can be solved.

The present application relates to the technical field of accelerator beam measurement, and particularly discloses a water gravity type inner target beam measurement device, which comprises a beam measurement assembly, a gravity adjustable cooling assembly, a lever balance assembly and a limiting piece, the beam measurement assembly is connected to one end of the lever balance assembly through the gravity adjustable cooling assembly, and the limiting piece is arranged on the side surface of the lever balance assembly. The device adopts a seesaw type structure, fully utilizes the installation space in the cyclotron shell, utilizes the gravity of the cooling liquid as the power of the seesaw type structure, can omit the arrangement of a complex power driving piece, is small in size, simple in structure, low in cost, good in cooling effect, and stable in the beam size of the inner target measurement piece during measurement.

The utility model discloses a miniaturized double-frequency wide-beam terminal antenna, which relates to the technical field of mobile terminal antennas and comprises an antenna cap, an antenna housing, a radiator assembly, a feed network module, a radio frequency connector and an antenna base, and the radiator assembly, the feed network module and the radio frequency connector are sequentially distributed inside the antenna housing from top to bottom. According to the miniaturized double-frequency wide-beam terminal antenna, the radiation copper strip is arranged in a gradually-changed spiral form, and when the radiation copper strip is at the same rising angle, the spiral arm with the top open circuit structure has a wider beam width than the spiral arm with the short circuit structure, so that low-elevation electromagnetic signal radiation and reception of the satellite antenna are facilitated; the radiation copper strip is provided with four feeding points, each feeding point is connected with two oscillator arms with different lengths, the circular polarization characteristic and the double-frequency radiation characteristic of the antenna are guaranteed, the two oscillator arms with the same feeding guarantee different rising angles and widths, the isolation degree of double-frequency radiation is improved, the shape of a directional diagram is more regular, and higher radiation gain is achieved.

The invention discloses an omnidirectional television antenna structure and an omnidirectional television antenna, comprising a control board, on which a combiner, a matching module and a signal output terminal which are electrically connected in sequence are arranged; a UHF band receiving module, which comprises four annular oscillators which are evenly arranged around the periphery of a central point, and the four annular oscillators are connected in parallel to form an output 75-ohm antenna array; a VHF band receiving module, which comprises a dipole which is connected to the control board after being matched to 75 ohms by a balun; signals received by the UHF band receiving module and the VHF band receiving module are combined by a combiner and matched to 75 ohms by a matching module, and then output from the signal output terminal; the television antenna comprises an upper cover, a lower cover and the antenna structure; the antenna gain is increased by adopting an arraying method, so that the antenna has better omnidirectionality, can efficiently receive signals from any direction, and will not produce a situation where the signal is obviously weak in one direction.

The application relates to a kind of laser beam shaping systems and methods based on optical waveguide, belong to beam shaping technology.It includes semiconductor laser from left to right sequentially arranged, fast axis collimating lens, slow axis collimating lens, beam expander system, focusing lens and optical waveguide;Fast axis collimating lens is plano-convex cylindrical lens, for collimating the fast axis direction of light beam;Slow axis collimating lens is plano-convex cylindrical lens, for collimating the slow axis direction of light beam;Beam expander system includes preceding plano-concave cylindrical lens and following plano-convex cylindrical lens, for expanding the light beam width of slow axis direction to be consistent with the light beam width of fast axis direction;Focusing lens is plano-convex lens, for focusing light beam to optical waveguide input end;The input end section of optical waveguide is rectangle, and the output end section is circular, for shaping rectangular light spot into circular light spot.In the application, light beam is transmitted in optical waveguide efficiently, and gradually shaped into circular light beam through transition structure.

The utility model provides a short-space ultrasonic level transmitter which comprises a shell, an electronic unit and two ultrasonic vibrators, wherein the electronic unit and the two ultrasonic vibrators are located in the shell. Wherein one ultrasonic vibrator is used for transmitting ultrasonic waves, the other ultrasonic vibrator is used for receiving the ultrasonic waves, and matching layers are bonded to the bottoms of the two ultrasonic vibrators respectively. Two hollow fixing supports are arranged on the bottom face of the inner side of the shell, the two ultrasonic vibrators and the corresponding matching layers are installed in the two fixing supports respectively, and the two ultrasonic vibrators and the corresponding matching layers are kept inclined relatively. The distance between the inner cavities of the two fixed supports is smaller than the radius of the ultrasonic vibrator; and the matching layer is adhered or fixed on the inner wall of the corresponding fixed support through a soft material. The ultrasonic level transmitter solves the problem that an existing ultrasonic level transmitter is not suitable for being installed and applied in a narrow space, and the requirement for level measurement in the narrow space is met.

The utility model relates to the technical field of spinning of daily necessities, and discloses a towel conveying mechanism of a full-automatic towel machine, which comprises a rack, a transmission shaft rotationally connected to the rack, a rotary driving part for driving the transmission shaft to rotate, a conveying component and a conveying workbench, the conveying assembly comprises a support, at least two lower belt wheels installed on the support, at least one upper belt wheel, a belt arranged on the upper belt wheel and the lower belt wheels in a sleeving mode, a swing arm hinged to the support, a swing driving piece driving the swing arm to swing and an adjusting wheel installed on the swing arm. The towel receiving device has the following advantages and effects that the effect of efficiently and accurately receiving cut semi-finished towels is achieved.

The embodiment of the invention provides a message pushing method and system based on burying point data and related equipment, belongs to the technical field of computers, and is suitable for the field of financial science and technology. The method comprises the following steps: firstly, in response to an operation prompt request, obtaining a current buried point website, operator information and target buried point data, obtaining current configuration information of the current buried point website, and further screening out reference configuration information from preset historical configuration information based on the current configuration information; and finally, generating an operation prompt message according to the reference configuration information and the target burying point data, and determining a client according to the operator information, thereby prompting the operation prompt message through the client. Therefore, according to the embodiment of the invention, the operation prompt message can be efficiently and accurately generated, and the operation prompt message can be accurately and timely transmitted to the operation personnel, so that the operation personnel can effectively receive and understand the operation prompt message.

Disclosed is a base station in a wireless communication system. Each base station in wireless communication comprises: a communication module; and a processor. The processor generates a hybrid automatic repeat request (HARQ)-ACK codebook comprising one or more bits and indicating whether or not reception of a channel or signal is successful, and transmits the HARQ-ACK codebook to the base station.

The application discloses a novel industrial multifunctional pulse eddy current probe and relates to the technical field of pulse eddy current detection.The probe shell is internally provided with excitation assemblies and a Hall sensor.The excitation assemblies are in multiple groups, the Hall sensor is arranged at the center of the excitation assemblies, and the excitation assemblies are arranged in a circumferential array around the Hall sensor.The application is not easily disturbed by other magnetic fields or electric fields in the surrounding environment, can reduce signal fluctuation and errors caused by external interference to a certain extent, and improves the reliability and stability of probe detection.

A method for receiving a physical control channel in a wireless communication system and an apparatus using the same are provided. Each base station for wireless communication comprises: a communication module; and a processor. The processor is configured to determine a number of dynamic slot format information (SFI) bits based on a maximum value of a slot format combination index that can be indicated by the dynamic SFI transmitted to the terminal, and monitor a physical downlink control channel (PDCCH) including the dynamic SFI based on the number of dynamic SFI bits. The slot format combination index identifies a slot format combination configured for the terminal. The slot format combination indicates a type of a symbol included in the one or more slots, and the type of the symbol is one of a downlink symbol, an uplink symbol, and a flexible symbol.

The present application relates to a kind of electromagnetic ultrasonic-based underwater steel structure damage detection and distinguishing method, using electromagnetic ultrasonic detection equipment to detect underwater steel structure with non-conductive covering layer on surface.The method comprises: electromagnetic acoustic transducer (EMAT) probe is arranged above the surface of underwater steel structure;According to lift-off distance, configure excitation parameter;Apply excitation pulse to emit ultrasonic wave;Receive echo signal and extract transit time feature, echo amplitude feature and initial wave amplitude feature;At least one change based on the above features distinguishes abnormal type, the abnormal type includes at least one of corrosion thinning, surface opening crack and simple lift-off increase.By the above design, the present application realizes the accurate detection and reliable distinction of underwater steel structure damage state under the condition of non-conductive covering layer.

The present disclosure relates to a method by which a user equipment (UE) transmits predicted channel state information (CSI) in a wireless communication system. In particular, the method comprises the steps of: receiving a control signal for predicting a CSI report from a BS; receiving at least one measurement resource from the BS based on a control signal for predicting CSI reporting; measuring at least one predicted CSI related to the one or more time instances based on the at least one measurement resource; and transmitting the at least one predicted CSI to the BS, in which a first minimum time interval until transmitting the at least one predicted CSI after receiving the control signal for the predicted CSI report is determined based on a size of a measurement window, the size of the measurement window being determined based on a number of channel measurement resources (CMRs) among the at least one measurement resource.