1520results about "Close-range type systems" patented technology

The invention provides a key information extraction method and system based on a multi-modal model. According to the scheme, building structure stress and optical cable topological data are fused, structural deformation and optical signal attenuation characteristics are associated through a multi-modal model, and the node failure probability is predicted. Screening nodes with high failure risk, planning an isolated standby optical cable path, synchronizing main and standby signals by adopting a space diversity technology, and generating a redundant signal set through cross-modal alignment; the redundant data is divided into fragments according to geographic grids, and a multi-modal hash identifier is generated by combining the wavelength of a far-end node optical signal and a regional compression resistance parameter. And when the nodes fail, matching data fragments of the high compression resistance area according to the Hash identifier, and reconstructing key information by using a multi-path time-frequency complementary feature to realize network fault self-healing and intelligent redundancy recovery. According to the technical scheme provided by the invention, intelligentization and high efficiency of communication network failure prediction and redundancy recovery are realized, and the network stability and the service continuity are remarkably improved.

The invention provides an old cell environment sensor data processing method and system based on ultraviolet light communication. The method comprises the following steps: acquiring an environment feature set of an external facade of an old community building through a distributed environment sensor array, and constructing an ultraviolet channel reflection skeleton in combination with an obstacle coordinate; fusing the aging factor attenuation model and the physical space topological structure through a dynamic space-time grid division engine, and generating a multi-dimensional feature segment set carrying space-time attenuation weights; analyzing channel interference in real time based on the interference intensity probability matrix of the ultraviolet channel reflection skeleton, and generating a multi-band transmission configuration result; and calibrating multipath transmission time delay through a phase compensation factor to construct an ultraviolet light pulse sequence carrying a path feature code, and when the difference degree of adjacent units exceeds a critical condition, triggering a closed loop feedback mechanism and updating a link weight. According to the technical scheme provided by the embodiment of the invention, the efficiency and precision of old cell environment sensor data processing can be improved.

The invention relates to the field of optically-carried information technology and provides a method and device for optically-carried information transmission based on full-spectrum LEDs. The method addresses the problem of visual perception interference caused by multi-color LEDs used for data transmission in the prior art. The method includes: dividing the data to be transmitted according to the first transmission demand information, obtaining a second preset number of data segments; selecting target monochromatic LEDs based on the luminous characteristics of the LEDs and the first transmission demand information; processing the data segments using the target LEDs and preset modulation algorithms to generate corresponding LED control signals; and controlling the target LEDs to transmit optically-carried information based on the control signals. This invention ensures optical communication performance while effectively reducing interference, thus improving the reliability of the optically-carried information system.

The invention discloses a wireless network high-speed switching automatic test optimization method based on edge computing, and relates to the field of wireless network switching. An improved gravitational search algorithm is combined with a GIS deployment node, multi-dimensional data is collected through an intelligent heterogeneous sensor and reinforcement learning, preprocessing is carried out through a denoising auto-encoder based on a GAN, modeling is carried out through space-time diagram convolution and an LSTM mixed model, a test case is generated through reinforcement learning Monte Carlo tree search, and testing is carried out on edge nodes in a distributed mode. And an optimization strategy is formulated through multi-agent deep reinforcement learning, and strategy implementation and feedback are realized through SDN and a block chain. According to the method, multi-dimensional acquisition, intelligent modeling, automatic testing and deep reinforcement learning optimization are realized, the high-speed switching performance is improved, the time delay and failure rate are reduced, the testing efficiency is improved, resource allocation is optimized, the network security is enhanced, and stable and efficient operation of the wireless network is guaranteed in an omnibearing manner.

Data are optically transmitted from a power tool device, such as a power tool, a power tool battery charger, power tool pack adapter, and / or a battery pack. The data are stored in a memory of the power tool device and are encoded as optical signal data to provide an encoded representation of the stored data. An optical transmitter (e.g., a light emitting diode or a flat panel display) transmits the optical signal data, which are detected or otherwise received by an optical receiver device, which may include a camera or other photodetector. The optical signal data may include light signals generated by an LED, where the data are encoded using an encoding scheme that modulates one or more characteristics (e.g., amplitude, wavelength, color) of the generated light signals. The optical signal data may also include images (e.g., barcodes, QR codes) or characters.

An optical emission array includes an optical input portion configured to provide a parent laser source for the optical emission array, and an optical output portion including a plurality of child laser emitters. Each child laser emitter of the plurality of child laser emitters is injection-locked to the parent laser source. The optical emission array further includes at least two optical distribution branches (i) disposed between the optical input portion and the optical output portion, and (ii) optically connecting at least two child laser emitters of the plurality of child laser emitters, respectively, to the parent laser source.

The invention discloses a visible light communication data transmission method based on dynamic modulation, and particularly relates to the field of visible light technology communication. The method comprises the following steps: performing nonlinear dynamic feature extraction on an actual light intensity signal emitted by a light emitting diode to generate a spectral response feature set; performing segmented analysis on the frequency domain distortion evolution trend based on the frequency spectrum response feature set to obtain a plurality of frequency spectrum distortion subintervals; performing local modulation parameter optimization on each spectrum distortion subinterval to obtain a dynamic local modulation parameter set; mapping the dynamic local modulation parameter set into a modulation driving strategy sequence, and generating a dynamic modulation waveform signal sequence; performing detection and time-frequency feature extraction on the dynamic modulation waveform signal sequence to obtain a target signal sequence after noise suppression; and the target signal sequence is demodulated, complete data is recovered, visible light communication data transmission is completed, and the optical communication signal quality and the data recovery capability in a complex modulation environment are effectively improved.

An automated storage and retrieval system includes a three-dimensional storage grid for storing storage containers; first and second container handling vehicles operating on the storage grid; and a central communication system for controlling and communicating with the container handling vehicles for handling storage containers in the storage grid. The automated storage and retrieval system includes a barrier separating the three dimensional storage grid into a first section and a second section. The barrier has two states: a first state in which the container handling vehicles are allowed to move between the first section and the second section; and a second state, in which the container handling vehicles are physically prevented from moving between the first section and the second section by means of the barrier.

The invention provides a highway cloud toll collection system data transmission method, and relates to the technical field of data transmission. The highway cloud toll collection system data transmission method specifically comprises the following steps: S1, data acquisition; s2, data preprocessing; s3, transmitting visible light communication data; s4, road side unit data receiving and processing; s5, encrypting the data and transmitting the data to an edge computing node; s6, edge computing node data processing; s7, uploading the data to a cloud platform; and S8, carrying out deep analysis on the cloud platform data. The invention provides an expressway cloud toll collection system data transmission method which has the advantages of efficient data transmission, high safety, high reliability, intelligent data processing, high expansibility, cost effectiveness and the like. The overall performance and the user experience of the highway toll collection system can be obviously improved.

Methods and apparatus for conveying directionality and distance information from a transmitter to a receiver within the coordinate system of the transmitter. Conveying the directionality and distance information to the receiver may, for example, reduce computational loads at the receiver. The signal from the transmitter may include information for rendering digital content and information indicating the direction and distance of the transmitter, and the receiver may render the digital content using the direction and distance to reduce processing at the receiver. Alternatively, the signal may include pre-rendered content based on the direction to further reduce processing at the receiver.

The invention provides an electric power optical communication positioning system and method based on a PLC, and relates to the technical field of PLC electric power optical communication. After a real-time user starts a mobile terminal camera, a real-time optical signal of a target lamp is captured through the camera; the mobile terminal obtains a real-time ID and a real-time physical coordinate by decoding the real-time optical signal; after receiving a target parking space number input by a real-time user, the mobile terminal matches a parking space lamp ID and a parking space physical coordinate pre-bound with the target parking space number; and calculating a navigation path according to the real-time physical coordinates and the parking space physical coordinates, and outputting a real-time navigation path. The technical problem that in the prior art, due to the fact that underground space positioning is high in cost, poor in precision and prone to interruption of positioning communication, sub-meter continuous positioning and intensive management are difficult to carry out in a network-free underground space is solved. The comprehensive technical effects of remarkably saving the cost, improving the positioning precision, optimizing the user experience and enhancing the management efficiency are achieved.

The invention relates to the technical field of optical communication, in particular to an automobile headlamp communication system and method based on image frame interpolation, comprising a transmitting end and a receiving end, a vehicle-mounted central control system of the transmitting end is used for receiving input to-be-transmitted information, and an ambient light detection module evaluates an external illumination condition in response to the input of the to-be-transmitted information; an image gray value and frame insertion frequency are set based on the illumination intensity, the image coding module codes information to be transmitted based on the set image gray value to generate a projection image frame, and the projection module inserts the projection image frame into a normal illumination frame sequence of a vehicle lamp based on the frame insertion frequency and projects the projection image frame to an external environment; the image acquisition module of the receiving end is used for acquiring a projection image frame, the image decoding module preprocesses the projection image frame and then decodes the projection image frame, and the information to be transmitted is restored and sent to the vehicle-mounted central control system. According to the invention, vehicle lamp communication at a certain distance in a traffic environment can be realized on the premise of ensuring normal vehicle lamp illumination.

A self-aligning window mounted communication apparatus is discussed herein. In some examples, a wireless gateway may comprise a first unit to be mounted outside a window and a second unit to be mounted inside the window. A first unit and a second unit may each include an optical unit, a coupling unit, and a housing unit. A first optical unit may include a magnetic array with polarities of the magnetic elements configured to orient with a second optical unit in a single orientation. The optical unit(s) may be movably coupled with the respective coupling unit(s) so that the optical unit may move with various degrees of freedom and thus, when the first and second units are mounted on a window, the optical units can self-align based on the respective magnetic arrays and the degrees of freedom afforded by the movable coupling with the coupling unit.

A wearable device with an embedded keepsake, said apparatus comprising at least a transparent enclosure forming a keepsake housing; said housing filled with a pulverized expression of the keepsake for display via the transparent housing; and the filled keepsake housing embedded within any portion of the wearable device.

The invention discloses an intelligent seabed energy detection system and method based on visible light communication, and belongs to the technical field of deep sea detection, the detection system comprises a data acquisition system (1) and a visible light communication system (2), the data acquisition system (1) structurally comprises a high-definition camera (11), an underwater sensor (12) and a first analog-to-digital converter ADC (13), the visible light communication system (2) structurally comprises a transmitting end and a receiving end; the detection method comprises the steps of front-end acquisition, signal conversion, signal processing, optical signal transmission and signal restoration. The characteristics of high frequency and large bandwidth of light waves are utilized, the intensity of light is modulated, binary code element signals are converted into optical signals, the optical signals are received through the photoelectric detector for underwater information transmission, efficient and real-time submarine energy monitoring and analysis are achieved, and comprehensive technical support is provided for development and utilization of submarine energy.

The invention relates to an underwater visible light signal recovery method based on transfer learning, and aims to solve the problems of signal noise, distortion and communication performance reduction caused by disturbance of water turbidity, flow velocity, ambient light intensity and the like on an underwater visible light communication (UVLC) system. In combination with transfer learning and a generative adversarial network (GAN), data are acquired through a self-developed hardware platform, background data are generated through MATLAB simulation, simulation and real image features are fused by using a conditional generative adversarial network (cGAN) to generate simulation data, signal recovery capability is trained by using a U-NetGAN model, and finally the system is deployed at a receiving end. Compared with the prior art, the scheme overcomes the problems that traditional modulation is poor in adaptability under disturbance of water turbidity, flow velocity and the like and is difficult to deal with a complex underwater environment; the defects that a deep learning method depends on large-scale data and cross-scene generalization is weak are overcome. Through the combination of transfer learning and GAN, the UVLC system communication performance is significantly optimized, the delay is low, the complexity is low, and actual deployment requirements are better met.

A communication control device that includes a light transmission condition generation unit that generates a light transmission condition for transmitting the first spatial light signal including the transmission signal toward a first address, a light transmission control unit that controls a light transmitting device to transmit the first spatial light signal toward the first address, a signal acquisition unit that acquires a reception signal included in the second spatial light signal that has received the second spatial light signal, a signal analysis unit that analyzes the reception signal and extracts a second address in a second transmission coordinate system, the second address being included in the reception signal, and a signal generation unit that generates the transmission signal including the first address, generate the transmission signal including the first address and the second address according to a result of analyzing the reception signal, and output the generated transmission signal.

The invention discloses a light-weight wide-angle atmosphere laser communication device, system and method based on reverse modulation inertial navigation cooperation, and solves the technical problem that an existing atmosphere laser communication system is large in size and weight. The atmosphere laser communication system comprises at least one active communication device and at least one passive communication device, wherein the active communication device comprises a first main control unit, an optical signal generation modulation unit, a direction adjustment unit, a first optical receiving unit, a first optical signal acquisition unit, a first electric signal processing unit and an aiming unit; the pointing adjustment unit comprises an inertial navigation measurement module and a first MEMS fast reflecting mirror; the passive communication device comprises a second optical receiving unit, a second optical signal acquisition unit, a second electric signal processing unit, a second main control unit and an MRR modulation unit. According to the invention, a scheme of cooperation of light beam pointing compensation and reverse modulation of inertial navigation measurement is adopted, and the problem that the communication field angle, volume and weight of an atmospheric laser communication system are mutually restricted is solved.

Methods and apparatus for transmitter and receiver localization within an environment. A transmitter transmits a signal that includes information (e.g., wavelength, polarization, and / or modulation) that varies based on observation angle. Receiver(s) may estimate direction of the transmitter in the environment based on the received signal. Intensity of the signal may be used to determine distance of the transmitter to the receiver(s). The receiver(s) may then convey the respective estimated distance and direction to the transmitter, for example via a wireless connection. The transmitter may then generate a map of the respective distances and directions to receiver(s) in the environment, and may convey absolute location and orientation of the transmitter in the environment to the receiver(s), for example via a wireless connection.

1. A load handling device for lifting and moving containers stacked in a grid storage structure having a track system, the load handling device configured to travel on the track system, the load handling device comprising a transmitter configured to transmit data and a receiver configured to receive data from the transmitter, the load handling device being assigned a code such that the transmitter is configured to transmit the code along with the data and the receiver is configured to discard received data that does not comprise the code.

The invention discloses an intelligent road system for vehicle-road cooperation safety alarm, and relates to the technical field of vehicle-road cooperation alarm, and the system comprises a communication evaluation module which inputs an optimal communication path into a communication mapping model, a space matching layer carries out the fusion of road geometry and communication topology, a state mapping layer marks the signal intensity and spike node states, and a state analysis module which carries out the analysis of the optimal communication path; generating a communication quality thermodynamic diagram; the risk decision module is used for evaluating the risk level of each region based on the communication quality thermodynamic diagram and outputting priority transmission parameters; and the information transmission module starts sound-light alarm according to the priority transmission parameters, obtains an execution state report, and transmits the execution state report back to the command center. According to the method, the communication mapping model is constructed and the priority transmission parameters are dynamically generated, so that the accuracy of communication state evaluation is improved, and efficient cooperative processing and intelligent priority distribution of multi-source alarm information are realized.

The present invention relates to a wearable apparatus and method for displaying a keepsake in a transparent housing embedded on a wearable. The apparatus comprises a housing and a scanning authentication element. The housing is formed of a clear enclosure. The housing is filled with a keepsake for wearable display via the clear enclosure embedded on the wearable. The keepsake is any portion of any physical item with commemorative value, commemorating at least one of an events, individual, or venue. The scanning authentication element is embedded on the wearable. The element is configured to be scanned for digital authentication of at least one of the keepsakes.

An optical wireless communication (OWC) transmitter apparatus comprises: a plurality of transmitters, each transmitter having a respective field-of-view in respect of which it is configured to transmit OWC signals; and a controller configured to select which of the transmitters transmit the OWC signals, thereby determining a transmission zone to which the OWC signals are transmitted by the apparatus, wherein the transmission zone comprises at least one sub-zone, each sub-zone corresponding to the field-of-view of a respective one of the transmitters.

The technology disclosed in this patent document can be used to construct devices with opto-electronic circuitry for sensing and identification applications, to provide untethered devices for deployment in living objects and other applications, and to provide fabrication techniques for making such devices for commercial production. As illustrated by specific examples disclosed herein, the disclosed technology can be implemented to provide fabrication methods, substrates, and devices that enable wireless, inorganic cell-scaled sensor and identification systems that are optically-powered and optically-readout.

A device may include a processor, a receiver, and a transmitter. The receiver may be configured to receive a content signal. The transmitter may be configured to transmit the content signal. The transmitter may be configured to transmit an associated inaudible signal. The content signal, the associated inaudible signal, or both, may be transmitted to one or more electronic devices. Each of the one or more electronic devices may be configured with audio interfaces. The receiver may be configured to receive a respective message from each of the one or more electronic devices. Each respective message may be based on the associated inaudible signal. Each respective message may include a respective electronic device identifier. The transmitter may be configured to transmit one of the respective messages.

The invention discloses a DALI equipment dynamic addressing and automatic address configuration method based on a LiFi technology, and relates to the technical field of intelligent lighting. Building a LiFi network and setting a communication protocol; equipment physical deployment and initialization; triggering an equipment discovery mechanism; the device responds to and recognizes interaction; address allocation and conflict detection; address configuration issuing and device activation; and carrying out configuration recording and fault processing. According to the dynamic addressing and automatic address configuration method combining the LiFi technology and the DALI device, the DALI slave device and the main controller are modified to enable the DALI device to have the compatibility of LiFi communication and a DALI protocol, automatic discovery, address allocation and conflict detection of the device are achieved through the LiFi network, the configuration process of a traditional DALI system is optimized, and the configuration efficiency of the DALI system is improved. High-speed data transmission and encryption of a configuration instruction are realized through a LiFi channel, and automatic configuration and stability of equipment are ensured.

The invention relates to the technical field of automobile lamp communication, in particular to an automobile headlamp free optical communication system and method based on stroboscopic modulation. The vehicle-mounted computer receives road condition information and converts the road condition information into an original bit stream, the anti-interference encoder generates an intermediate signal with a check code, the time-frequency interleaver carries out interleaving, the driving circuit modulates the interleaved intermediate signal, and the vehicle lamp receives the modulated signal and sends out an optical signal in a stroboscopic mode; a photoelectric sensor at a receiving end captures an optical signal emitted by a vehicle lamp, a noise reduction filtering module carries out wavelet noise reduction and filtering processing, a judgment decoding module carries out frame positioning, demodulation and verification on the processed optical signal to generate a restoration bit stream, and a vehicle-mounted computer restores the restoration bit stream into road condition information. And the voice broadcast module carries out voice broadcast on the road condition information. According to the invention, stable communication requirements between vehicles and between the vehicle and the sensing equipment in a closed or semi-closed environment in which electromagnetic signals are seriously disturbed can be met.

The invention relates to the field of optical communication, and provides a free space optical communication-based full-duplex signal transmission device, which comprises a rotatable first device and a rotatable second device, the rotation axes of the first device and the second device coincide; when the first device and / or the second device rotate around the rotation axis, an optical signal transmitted by the first laser transmitter is always received by the first laser receiver, so that the intensity of light received by the first laser receiver is not changed during rotation; and when the first device and / or the second device rotate around the rotation axis, the optical signal transmitted by the second laser transmitter is received by one second laser receiver or at least two adjacent second laser receivers. According to the invention, high-speed full-duplex signal transmission in a rotation state can be realized, transmission rates such as 10Gbps and 25Gbps are supported, the sizes of the first device and the second device are as small as several millimeters, the size is small, and the weight is light.

A visible light communication apparatus comprising: multiple sources, at least one source being a light source configured to transmit a data signal; and a receiver comprising a polarizer, operating in a visible light spectrum, the receiver configured to receive visible light energy from the one or more sources; the polarizer configured to filter multiple noise signals and allow the data signal to pass through to the receiver. Allows more signal light than background light to reach the sensor, the polarizer improves signal to noise ratio for outdoor visible light communication.

The invention relates to the technical field of green communication, and discloses a visible light communication system and method based on CDMA (Code Division Multiple Access), the system comprises a transmitting end module, a visible light channel module, a receiving end module and a dynamic optimization module, by combining a CDMA multiple access technology and OFDM (Orthogonal Frequency Division Multiplexing) modulation, multi-user efficient access and spectrum resource dynamic allocation are realized, and the visible light communication efficiency is improved. User data streams are distinguished based on orthogonal spreading codes, and multi-user interference is effectively suppressed; through an OFDM subcarrier mapping and self-adaptive power allocation algorithm, the subcarrier transmitting power is optimized, the spectrum utilization rate is improved, the problem of resource allocation rigidness in a traditional TDMA / FDMA technology is solved, the communication capacity and the data transmission efficiency in a multi-user scene are remarkably improved, and by measuring the signal-to-noise ratio and the path loss of a channel in real time, the transmission efficiency of the multi-user scene is improved. And the spreading code length and the OFDM modulation order are dynamically adjusted, and signal attenuation and distortion caused by complex illumination conditions and a multipath effect are reduced.