1126results about "Close-range type systems" patented technology

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 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.

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.

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.

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 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 provides a high-reliability lamp mutual positioning method, system and device and a medium. The method comprises the following steps: determining a mutual influence relationship between lamps through reference parameters of the lamps with a visible light communication function in a target shopping mall during installation and working state parameters of visible light signals of the lamps; determining an interference feature vector of each lamp in the positioning process according to the mutual influence relationship, the multipath effect of the visible light signal and the interference superposition feature; determining a positioning constraint condition of each lamp, and determining a cooperative positioning parameter of each lamp through all the positioning constraint conditions and all the interference feature vectors; and determining relative positioning information of each lamp in the target shopping mall according to the anti-interference configuration parameter of the visible light signal of each lamp in the positioning process and all the cooperative positioning parameters. By adopting the scheme of the invention, the influence of the multipath effect and signal attenuation between the lamps on mutual positioning of the lamps can be reduced, so that high-reliability mutual positioning of the lamps is realized.

The utility model relates to the technical field of visible light communication, and discloses a visible light communication emission head, which comprises a reflection cup, the reflection cup comprises an inner cavity with a gradually increased opening, and the surface of the inner cavity is provided with a reflection layer; the light source is arranged at one end, with a narrower opening, of the inner cavity; the first convex lens is arranged at one end of the reflection cup and covers the light source; the second convex lens is arranged at the other end of the reflection cup; light emitted by the light source sequentially penetrates through the first convex lens, the inner cavity and the second convex lens and then irradiates outwards. The utility model aims to provide the visible light communication transmitting head which is compact in structure, low in cost, long in transmission distance and suitable for long-time operation.

The present invention relates to an automated storage and retrieval system, comprising 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 system also comprises a barrier separating the three dimensional storage grid into a first section and a second section, wherein 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. 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 relates to an Optical Front-end, OFE, (400) for Optical Wireless Communication, OWC, the OFE comprising: an optical receiver with at least a photodetector (102a) and a trans-impedance amplifier, and a two-dimensional array of optical transmitters (103a) each having an individual transmitter field-of-view, and one or more drivers, the two-dimensional array arranged to create a combined transmitter field of view that is larger than 5 the individual transmitter field of view, the plurality of optical transmitters arranged such that optical axes of the plurality of optical transmitters are evenly distributed within the combined transmitter field of view.

The invention relates to the technical field of free space optical communication, and discloses a wireless optical communication device which comprises a transmitting end and a receiving end. The transmitting end comprises an information source generation unit, a coding unit, a modulation unit, a driving unit, a light source unit and a transmitting optical assembly; the receiving end comprises a receiving optical assembly, a CCD camera, a signal processing unit, a demodulation unit and a decoding unit; in actual use, wireless communication is carried out through the optical medium, the communication medium is safe, and the problems of active electromagnetic silence and passive electromagnetic suppression do not need to be worried about; the coverage range of visible light is wide, the communication range is wide, and deployment is convenient; in addition, communication is carried out through the CCD camera, so that the original CCD camera can be replaced in some scenes where the CCD camera is installed, and image shooting and wireless optical communication can be realized at the same time.

The invention provides a communication system based on visible light, each of a first visible light receiver and a second visible light receiver comprises a distance optimization receiving module, an angle optimization receiving module and a merging module, a receiving end of the distance optimization receiving module receives a first visible light signal irradiated at multiple angles, and a receiving end of the angle optimization receiving module receives a second visible light signal irradiated at multiple angles; a first electric signal is generated and sent to a first receiving end of the merging module through an output end; a receiving end of the angle optimization receiving module receives the first visible light signal, generates a second electric signal and sends the second electric signal to a second receiving end of the merging module through an output end; and the merging module merges the received first electric signal and the second electric signal, generates an optimized electric signal, and sends the optimized electric signal to a visible light receiving pin of the first control panel / the second control panel through an output end, so that the first control panel / the second control panel executes corresponding processing steps according to the optimized electric signal.

To provide a visible light communication system that can increase communication speed in visible light communication.SOLUTION: A visible light communication system 100 includes a light-emitting device 11 that transmits signals by emitting visible light EL with differences provided between blinking periods and duty ratios, a light-receiving device 21 that reads a blinking period and a duty ratio from changes in luminance of the visible light EL from the light-emitting device 11, and a signal processing unit 22 that extracts transmission information from a transmitting side from the blinking period and the duty ratio read by the light-receiving device 21.SELECTED DRAWING: Figure 1

A surgical robotic system includes a control tower and a robotic system component. The control tower includes a tower Li-Fi transceiver configured to communicate on a first communication data channel. The robotic system component includes a robotic system component Li-Fi transceiver configured to communicate first data, and a self-aligning mechanism. The self aligning mechanism includes an imaging device configured to capture images configured to allow detection of a detected a geospatial location of the tower Li-Fi transceiver, and an actuatable base configured for aligning the imaging device with the detected geospatial location of the tower Li-Fi transceiver. The robotic system component Li-Fi transceiver is mounted to the actuatable base.

A receiver of an optical communication system includes an organic photoelectric conversion device configured to convert optical signals received from a transmitter into an electrical signal; and a demodulator configured to input the electrical signal to a trained artificial neural network and demodulate the electrical signal based on an output of the trained artificial neural network.

The invention provides a'vision + behavior 'information transmission method, which is characterized in that interactive nodes on a data chain are regarded as intelligent agents, a machine observes behaviors of other machines through a photoelectric sensor and receives and accepts information transmitted by the other machines, and data chain information flow is established on a'vision + behavior' information transmission mode. According to the invention, the interaction mode of the data link is innovated, the serious dependence of the data link on radio frequency communication is reduced, and the novel consensus capability of electromagnetic-wave-free communication of the data link is realized. The data chain works in a spectral domain comprising visible light and invisible light, is not decoy and interfered by electromagnetism, and can face strong electromagnetic interference or transmit information under complete rejection. The problem that use of the data chain is limited in a denial environment is innovatively solved, thoughts are expanded for the data chain to seek electromagnetic breakthrough, and the concept category of the data chain is developed.

A visible light communication apparatus comprising: sources configured to transmit a data signal; and a receiver comprising: measurement areas configured to sense and quantize energy from the sources, and attenuators configured to attenuate energy from the sources, by a step attenuation, based at least in part on a value of the sensed and quantized energy; the receiver being configured to determine whether the sensed and quantized energy saturated the measurement areas.

The invention relates to the technical field of visible light communication, and discloses an intelligent lamp data transmission system based on visible light communication. The system comprises an optical signal processing module, a transmission management module and a terminal control module. The optical signal processing module collects and processes the visible light signal and outputs a light intensity space coding signal; after the transmission management module receives the signal, the signal is decoded by the signal analysis unit to obtain an original data stream signal and a channel interference characteristic signal, the channel optimization unit processes the original data stream signal and the channel interference characteristic signal to obtain an optimal modulation parameter signal, and the transmission strategy unit outputs a dynamic bandwidth allocation signal; in the terminal control module, an adaptive modulation execution unit adjusts the driving parameters of the light emitter according to the optimal modulation parameter signal, a lamp array control unit adjusts the working state of a lamp light-emitting unit and collects a real-time link state signal, and a link monitoring module outputs a communication quality index. The system is suitable for an intelligent illumination and data transmission fusion scene.

Methods, systems, and devices for connection setup in an orbital angular momentum (OAM)-based communication system are described. A first device and a second device may establish an OAM communications connection between the devices. The first device and the second device may exchange a series of messages over a downlink communications link and an uplink communications link according to an OAM mode. Based on OAM related parameters or OAM related information included in the messages, the first device and the second device may achieve a successful directional alignment (co-axial alignment) between the first device and the second device. The first device and the second device may determine one or more orbital angular momentum modes for communication between the first device and the second device based on the establishing the directional alignment.

The invention provides an implementation method and system of a flexible fluorescent condenser visible light communication system, and relates to the technical field of data processing, and the method comprises the steps: taking a perovskite thin film as a core light receiving element, and carrying out the processing with a light source driving module, an optical lens group, a photoelectric detector and a signal analysis instrument, so as to generate a light signal receiving device; the method comprises the following steps: setting two fixed detection points on an optical signal receiving device, establishing a reference axis according to the two detection points, performing gridding segmentation on the reference axis, and generating a communication performance adjustment value by adopting a multi-target particle swarm optimization algorithm; and according to the communication performance adjustment value, the light current output by the perovskite thin film is demodulated and analyzed when the optical signal receiving device runs, and the optical communication rate with the field angle larger than + / -30 degrees, the bandwidth of 197.9 MHz and the 432 Mbps is achieved. The photoelectric property stability and the light absorption efficiency of the thin film are improved.

An optical wireless communication (OWC) interface apparatus comprises: at least one input and / or output configured to transfer data signals from and / or to a bus device; optical interface circuitry configured to transfer optical wireless communication (OWC) signals representative of the data signals between the OWC interface apparatus and a light transmitter and / or receiver apparatus, wherein the light transmitter and / or receiver apparatus is configured to transmit and / or receive the OWC signals as free-space light signals; and interface control circuitry that is configured to establish and / or maintain communication with the bus device in accordance with a bus protocol thereby to enable transfer of the data signals between the OWC interface apparatus and the bus device.

The invention discloses a visible light communication anti-eavesdropping method based on deep reinforcement learning and an optical intelligent reflecting surface, and relates to visible light communication security. Constructing a multi-user safe visible light communication indoor model, and designing a reverse pre-reflection model based on geometrical optical modeling to drive a deep reinforcement learning agent to learn; and accumulating experience by interacting with the environment, sampling and updating the weight of the deep reinforcement learning network by a sampling experience playback pool, and guiding intelligent control on LED beam forming and an optical intelligent reflecting surface. The guide error of the optical intelligent reflecting surface in the environment is perceived by the model at each moment, the secrecy rate of a receiving user is received, the deep reinforcement learning network is combined with the strategy at the previous moment and the environment state to output the strategy at the next moment, and the experience playback pool is circularly updated. And deep reinforcement learning is driven by a reverse pre-reflection model to jointly optimize LED beam forming and optical intelligent reflecting surface guiding, and the optical intelligent reflecting surface is used for accurately controlling a reflection path in a complex dynamic environment, so that the safety communication capability and the resource allocation efficiency are improved.

An optical wireless communications (OWC) receiver is configured for receiving light encoded with one or more data signals from one or more light sources of one or more OWC transmitters and for generating one or more electrical signals which are representative of the received light. The OWC receiver comprises a photodetector configured to generate the one or more electrical signals, a freeform optical component comprising a plurality of lenslets, each lenslet comprising a corresponding lenslet optical surface, wherein at least one of the lenslet optical surfaces is translationally and cylindrically asymmetric, wherein the freeform optical component comprises a three-dimensional freeform optical surface which includes the lenslet optical surfaces, and wherein the freeform optical component and the photodetector are configured so that the freeform optical component directs at least a portion of the light that is incident on the freeform optical component from the light source onto the photodetector. An OWC transmitter and an OWC system are also disclosed.

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.