67results about How to "Realize long-distance communication" patented technology

The invention relates to an active frequency identification label, a system and an identification method. In the method, the active frequency identification label periodically and actively receives monitor signals transmitted by an active frequency identification reader writer and can detect the intensity/ or the quality of the received monitor signals to judge the position distance between the active frequency identification label and the active frequency identification reader writer. The active frequency identification label has four working states. The method controls the active frequency identification label to be converted in the working states by the position distance between the active frequency identification label and the active frequency identification reader writer, so that the method realizes dynamic power management and has the advantages of long-range communication and low power consumption.

The invention, which belongs to the technical field of wireless communication, relates to a large-view field antenna-sharing microwave and laser-mixing wireless communication apparatus, so that problems that the existing communication system has disadvantages of high complexity, heavy weight and large size, the antenna field angle is small and thus capturing and tracking can not be carried out conveniently, and the receiving sensitivity is low can be solved. The apparatus comprises an off-axis three-reflector structure formed by a primary mirror, a secondary mirror, and a third-stage mirror, a fine tracking galvanometer, a folding mirror, a first beam splitter mirror and a second beam splitter mirror and the like. The fine tracking galvanometer receives the light emitted by the third-stage mirror and reflects the received light to the folding mirror; the folding mirror reflects the received light; the reflected light enters the first beam splitter mirror by an incident way; the first beam splitter mirror reflects one part of the received light to a beacon optical transceiver assembly and the other part of the light is transmitted to the second beam splitter mirror; and the second beam splitter mirror reflects the received light to a communication optical transceiver assembly. A microwave feed source is located at the focus of the primary mirror and is connected to a microwave communication assembly by a cable; and the microwave communication assembly and the laser communication optical transceiver assembly are connected to a master control assembly by cables.

The invention relates to the technical field of IOT radio frequency wireless identification, and discloses an electronic tag based on LPWAN and RFID technology. The electronic tag comprises an antenna module, a microprocessor, a cell, an LPWAN transmission module and a trigger module, wherein the antenna module is connected to the trigger module; the antenna module is used for sensing an induction coil; when the electronic tag gets close to the induction coil, an electromagnetic field of the induction coil charges the antenna module so as to enable the antenna module to have energy; the trigger module is used for triggering the electronic tag to send LPWAN signals after sensing that the antenna module has energy; an LPWAN transmission module is used for receiving and sending the LPWAN signals; the cell is used for supplying electric power to the modules of the electronic tag; and the microprocessor is used for processing signals and controlling the LPWAN transmission module to send and receive signals. The electronic tag of the invention cleverly combines a passive electronic tag and an active electronic tag to realize the electronic tag based on the LPWAN and RFID technology.

The invention relates to a device and a method for monitoring mobile phone video based on optimized H.264 coding standard. The method comprises the following steps: carrying out digitized sampling on acquired audio signals and video signals respectively; carrying out de-noising processing on the video signals, compressing video data by adopting an optimized H.264 compression algorithm, compressing audio data by adopting an optimized AMR algorithm, and overlapping channel number, monitoring date and time into the compressed audio-video data; and sending the compressed audio-video data to a mobile phone terminal through RTP and RTSP protocols, and playing the audio-video signals through corresponding player software. The device and the method adopt a holing mode facing private network TCP penetration, and have functions of reliable monitoring for a multi-frame differential moving target, advanced image record based on a double-buffer area, private area protection, multi-language automatic switch, wire/wireless automatic detection, audio bidirectional talkback based on a TCP5000 port and automatic alarm.

The invention discloses a radio-on-fiber (ROF) communication system which belongs to the technical field of ROF communication systems and adopts a phase modulator for generating optical millimeter wave and simultaneously transmitting orthogonal frequency division multiplexing (OFDM) signals. The invention uses the characteristics of higher reliability and cheapness when using the phase modulator for generating the optical millimeter wave, thus having the advantages of higher reliability and cheap performance, simple structure and easy implementation. The invention leads the OFDM signal to be uploaded onto the optical millimeter wave by using the phase modulating, thus prolonging the transmission distance of optical fibers.

The invention discloses a quantum key distribution network system and method based on orbital angular momentum multiplexing. The system comprises an Alice control side, an orbital angular momentum mode division multiplexing unit and a Bob user side. The Alice control side comprises a signal modulation unit and an orbital angular momentum multiplexing unit. The orbital angular momentum mode division multiplexing unit comprises a Galileo telescope assembly and an orbital angular momentum separation device. The Bob user side comprises N Bob users. Each Bob user comprises a polarization controllerand a detection device. A light signal generated by the signal modulation unit enters the orbital angular momentum multiplexing unit, the Galileo telescope assembly and the orbital angular momentum separation device in sequence, then is transmitted to the polarization controller of the corresponding Bob user side and finally enters the detection device for detection. According to the system and method, one-to-many communication of quantum network communication is realized, each user is relatively independent, the number of the users can be increased as the orbital angular momentum multiplexing is increased, and the system and the method have high expandability and relatively high practicability.

The invention discloses an emergency communication host with internal and external communication functions. The emergency communication host comprises a host case, a talkback button, a talkback handle, a power circuit, a host internal and external communication circuit and a talkback handle communication circuit, wherein the power circuit comprises a rechargeable battery, an isolated single-end flyback switching power buck circuit, a power switching circuit, a battery charging circuit, a battery protection circuit, a battery voltage detection circuit, a non-isolated Boost circuit, a linear voltage stabilizing circuit and an extension voltage supply control circuit; the host internal and external communication circuit comprises a GSM module, an SIM card seat, a GSM antenna, a watchdog circuit, a reset circuit, a voice signal processing circuit, a distress signal detection circuit, a handle on-hook detection button circuit, a buzzer circuit, a low battery capacity indication circuit and a GSM network signal indication circuit. The host is convenient to install and use, high in voice response speed, high in communication quality, high in working reliability and capable of realizing 24-hour emergency calls.

The invention is suitable for the technical field of communication and provides a communication method and system. The method is applied to the system comprising a plurality of terminal devices, and all the terminal devices have the Bluetooth function. The method comprises the steps that the Bluetooth function of all the terminal devices are started, one terminal device searches for the other terminal devices with the Bluetooth functions started, and stores information of the other searched terminal devices with the Bluetooth functions started; after receiving the communication request information sent by the other terminal devices through Bluetooth, the terminal device searches for the stored information to judge whether the information, corresponding to unique identifiers, of the terminal devices exists in the stored information according to the unique identifiers, carried by the communication request information, of the terminal devices to be communicated; if the information exists, the communication request information is sent to the terminal devices corresponding to the unique identifiers through the Bluetooth so that communication can be achieved. The method can effectively solve the problem that users of the terminal devices can not carry out communication on occasions without the wired network or the wireless network.

The invention discloses a communications relay device, a communications relay method and an air conditioner. The communications relay device comprises a main control chip, an indoor unit communication module and an outdoor unit communication module, wherein the indoor unit communication module is connected with an outdoor unit through a communication line; the outdoor unit communication module is connected with the indoor unit communication module, and is connected with an indoor unit through a communication line; the main control chip is connected with the indoor unit communication module and the outdoor unit communication module, and is used for controlling the indoor unit communication module and the outdoor unit communication module to establish a data transmission channel between the outdoor unit and the indoor unit. Through the communications relay device, the communications relay method and the air conditioner, a plurality of communications relay devices can be cascaded for use, so that long-distance communication between the indoor unit and the outdoor unit of a variable frequency chamber of the air conditioner is realized flexibly; the reliability of long-distance communication is ensured; the mounting of a super-long connecting pipe of the indoor unit and the outdoor unit can also be realized.

The invention discloses a new generation of multifunctional prepaid remote water meter. The multifunctional prepaid remote water meter comprises a rotary-wing type multi-flow mechanical water meter, which is integrated with a water meter base table and a transmission sensor; the rotary-wing type multi-flow mechanical water meter is connected with a single chip measuring and controlling circuit; the single chip measuring and controlling circuit is connected with an executing mechanism; the executing mechanism is connected with an electric control valve; a digital measuring circuit, a single chip main chip and a control circuit are embedded in the single chip measuring and controlling circuit; and the single chip main chip is respectively connected with a liquid crystal display, a transmitting antenna, a building collector, a transcription machine and an external power supply in sequence. The new generation of multifunctional prepaid remote water meter disclosed by the invention has the advantages as follows: simple structure and stable performance are achieved; a prepaid function is achieved; after purchased water quantity is used up, the valve is automatically shut off to remind a user of purchasing water in time; a stepwise-water-price charging function is obtained; remote communication is achieved through telephone lines, wide-band networks, wireless transmission and so on; and the meter of each house is remotely read, so that defect of unreliability for reading data in the traditional remote water meter is fundamentally solved. The phenomenon of water stealing and leakage is eliminated. The new generation of multifunctional prepaid remote water meter disclosed by the invention is widely applied to water supply companies in big, medium and small cities.

A high-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected is applied to the field of super-remote-distance space communication. To achieve high-speed laser high-power emission and super-remote-distance transmission, a seed source undergoes beam split through a coupler, a beam of light is input into phase controllers as reference light, and the other beam of light undergoes high-speed information modulation; a radio-frequency signal generator and the other beam of light enter an intensity modulator to obtain a high-speed modulation signal, the high-speed modulation signal enters the four phase controllers respectively to carry out phase control after undergoing uniform light split through the coupler, four beams of high-speed modulated light are obtained, and the four beams of high-speed modulated light enter four optical fiber amplifiers respectively to be amplified at a high power and then undergo coherent beam combination through a beam combiner; a beam splitter outputs 1% of a combined laser into the phase controllers, the combined laser undergoes phase comparison with the reference light, the comparison result is processed by the phase controllers to send out phase control signals, and four phase modulators control the phases of the beams of light respectively after receiving the phase control signals to guarantee coherent beam combination and emission angle scanning.

The invention discloses a single-bus temperature acquisition system integrated chip, and relates to a semiconductor integrated circuit. The single-bus temperature acquisition system integrated chip is composed of a substrate on which a chip is welded. The chip is provided with a plurality of pins. The single-bus temperature acquisition system integrated chip is characterized in that: partial pins of the chip are connected with more than one temperature sensor through a substrate pin; the chip is provided with a constant-current driving module, a power module, a channel switching module, an analog-to-digital conversion module, a decision output module, an output indicating module, a rough measurement output module, an accurate measurement output module, a single data bus, an adjustable clock module and a control mode module; and the functional modules are connected in an electrical connecting manner. Physical quantity information of a plurality of different temperature sensors can be measured simultaneously. After performing rough measurement calculation or accurate measurement calculation on a plurality of pieces of physical quantity information, the data information is transmitted according to different client requirements. The single-bus temperature acquisition system integrated chip has the following functions: cost reduction, simple wiring, capability of realizing long-distance communication, and ultralow power consumption.

The invention provides a method for remotely and wirelessly controlling a vehicle, wherein a vehicle-mounted wireless communication module is arranged on the vehicle; the vehicle-mounted wireless communication module is connected with a mobile communication network and is further connected to a vehicle electronic system, a control instruction is input on a mobile communication terminal and the mobile communication terminal sends the control instruction to the vehicle-mounted wireless communication module through the mobile communication network; and the control instruction is executed by the vehicle electronic system. The invention also provides a system for remotely and wirelessly controlling a vehicle, which comprises a vehicle-mounted wireless communication module, a mobile communication terminal, a mobile communication network and a vehicle electronic system, wherein the mobile communication terminal is connected with the vehicle-mounted wireless communication module through the mobile communication network; and the vehicle-mounted wireless communication module is connected with the vehicle electronic system. Besides, the number of the mobile communication terminal is preset in the vehicle-mounted wireless communication module; and the vehicle-mounted wireless communication module is provided with an unique identification number. The method and the system provided by the invention realize remote wireless control of the vehicle through the mobile communication network and are capable of realizing various control functions.

Disclosed is a serial modem type data photoelectric conversion device, which includes a receiving end module (1), a modulation end module (2), an electro-optical conversion end module (3), a photoelectric conversion end module (4) and a demodulation end module (5). The receiving end module (1) comprises a plurality of MAX232 chips (6) and corresponding optocoupler members (7) connected with the MAX232 chips (6). The modulation end module (2) comprises a data acquisition member (8) and a data acceleration member (9). The data acceleration member (9) compresses the acquired data by the data acquisition member (8) through data transmission acceleration encoding. The electro-optical conversion end module (3) transmits an optical signal to the photoelectric conversion end module (4) via an optical fiber. The demodulation end module (5) comprises a data decoding member (10) and a data output member (11). The data decoding member (10) decodes and transmits data to the data output member (11). The data output member (11) transmits the data to an RS232 serial port.

The invention provides a method, device, facility and system for outputting an alarm prompt. The method comprises the steps that the Bluetooth forwarding device sends broadcast information; the Bluetooth forwarding device receives response signals sent by a communication terminal or other Bluetooth forwarding devices, establishes connection and receives alarming information sent by the communication terminal or alarming information, sent by other Bluetooth forwarding devices, of the communication terminal after connection is established successfully; the Bluetooth forwarding device receives response signals sent by the Bluetooth prompting facility and establishes connection; the Bluetooth forwarding device forwards the alarming information to the Bluetooth prompting facility matched with the communication terminal; the Bluetooth forwarding device sends the alarming information to the Bluetooth prompting facility to enable the Bluetooth prompting facility to recognize the alarming information and output the corresponding alarming prompt. Telecommunication between the communication terminal and the Bluetooth prompting facility can be achieved through the Bluetooth forwarding device.

The invention provides a wireless network communication method, network equipment and a terminal. The method comprises the steps that an unmanned aerial vehicle flow management entity receives an authorization request; the unmanned aerial vehicle flow management entity sends an authorization response; wherein the authorization request is used for requesting an authorization terminal to control anunmanned aerial vehicle, and the authorization response is used for indicating whether the terminal is allowed to control the unmanned aerial vehicle; or, the authorization request is used for requesting the authorization terminal matching the unmanned aerial vehicle controller, and the authorization response is used for indicating whether the terminal is allowed to be matched with the unmanned aerial vehicle controller. The unmanned aerial vehicle flow management entity in a mobile communication network is used for authorizing or matching the unmanned aerial vehicle controller and the unmanned aerial vehicle, so that remote communication between the unmanned aerial vehicle controller and the unmanned aerial vehicle is realized.

The invention discloses a timing system for vehicle property competition and a realizing method thereof. The timing system comprises a triggering unit A, a triggering unit B, a base station unit and a signal lamp unit, wherein the triggering unit A consists of grating sensor modules at a starting point and a terminal point for a racing track I; the triggering unit B consists of grating sensor modules at a starting point and a terminal point for a racing track II; the base station unit consists of a radio station A, a radio station B, a timing module and an industrial personal computer. The timing system has the advantages that the system is suitable for the competition of single racing track, and also suitable for the competition of double racing tracks; by adopting the wireless digital transmission radio stations, the requirement of long-distance racing track is met, the delay time does not exceed 1ms, and the timing accuracy is higher; by adopting the grating sensors, the system is suitable for monitoring the racing tracks under various complicated road conditions, and the monitoring distance can reach 5 kilometres; the remote communication, control and timing can be realized, the scores of racers can be automatically sequenced and stored, and the working intensity of workers is greatly decreased.

The invention discloses a method for multiplexing a photo-communication meter, which comprises two parts of building control and executing through building a photo-communication network, wherein the control part comprises a server side and a plurality of client sides connected with the server side; the executing part comprises a photoswitch; meter information is searched and stored by using the server side and broadcast to each client side; a user operates at the corresponding client side according to the meter information, the client side sends an operation command and transmits the operation command to the photoswitch and the server side; the photoswitch receives the operation command so as to execute the switching of an optical path, thus the corresponding meter is connected with an object to be measured; and the server side receives the operation command so as to update the stored meter information and updates the broadcasting to the client sides in real time so as to be convenient for next operation. The invention also discloses a device for multiplexing the photo-communication meter.

The invention provides a BLE gateway communication method and system and computer equipment, and the communication method comprises the steps that a Bluetooth gateway is bound with a plurality of terminals in a binding mode, a binding table is generated, and the binding table comprises an MAC address of each terminal, a working time slot of each terminal and a working parameter of each terminal; when the Bluetooth gateway enters a wake-up mode at a preset moment, first configuration information sent by the cloud is received; the Bluetooth gateway establishes communication connection with a corresponding target terminal according to the first configuration information, the MAC address of each terminal and the working time slot of each terminal, and receives report data sent by the target terminal; the Bluetooth gateway sends the reported data of all the target terminals to the cloud, then enters a sleep mode, and waits for a next preset moment to enter a wake-up mode; and the problem that an outdoor gateway in the prior art cannot realize long-distance communication and low-power-consumption communication at the same time is solved, low-power-consumption communication is realized, and the transmission efficiency is also improved.

The invention discloses a building energy consumption management system and a building energy consumption management method, wherein the system comprises a device layer, a remote terminal control unitand a background service management unit. The device layer is used for collecting energy consumption data in a building. The remote terminal control unit is connected with the device layer through awireless transmission module to collect and control data of the device layer. The background service management unit is connected with the remote terminal control unit through a wired transmission module to perform data communication with the remote terminal control unit. The invention realizes long-distance communication, and the communication stability is high.