49results about How to "Avoid communication interference" patented technology

The invention discloses a method for communication between a vehicular radio-frequency identification card and a wireless base station. The wireless base station is provided with a wake-up channel, a field positioning channel and a plurality of data channels, which work independently; the vehicular radio-frequency identification card is provided with a wake-up channel, a field positioning channeland data channels, which correspond to each channel of the wireless base station; the wake-up channel of the wireless base station transmits a wake-up code, and the vehicular radio-frequency identification card receives the wake-up code by the wake-up channel of the vehicular radio-frequency identification card; the field positioning channel of the wireless base station transmits a field positioning code, the vehicular radio-frequency identification card receives the field positioning code by the field positioning channel of the vehicular radio-frequency identification card, and one data channel of the vehicular radio-frequency identification card reports data to the corresponding data channel of the wireless base station after the field positioning channel of the vehicular radio-frequency identification card receives the field positioning code. Because each channel of the wireless base station works independently, the vehicular radio-frequency identification card selects one data channel to report the data, so that communication information between the vehicular radio-frequency identification card and the wireless base station is not easy to lose, and the anti-jamming capability is high.

The invention provides a cooperative control device of a distributed photovoltaic grid-connected generation system. The device is composed of a single centralized grid-connected inverter and the common direct current bus of a number of MPPT combiner boxes. A voltage coding module is added in a centralized grid-connected inverter. The voltage coding module is located on the common direct current bus on the single centralized grid-connected inverter side. One end is connected with the direct current bus, and the other end is connected with a number of MPPT combiner boxes. Each MPPT combiner box is added with a voltage decoding module, and the voltage decoding module is located on the direct current bus on the combiner box side. A number of voltage decoding modules are correspondingly connected with a voltage coding module. The voltage coding module outputs the common direct current bus voltage reference value for adjusting the inverter to the inverter CPU according to the current instruction of the centralized grid-connected inverter. The voltage change of the common direct current bus is controlled, and the adjustment instruction is transmitted to the MPPT combiner boxes in the form of voltage. The voltage decoding modules identify the issued dispatch instruction according to the voltage of the direct current bus of the combiner boxes and output a control instruction, and the combiner boxes execute the control instruction.

The invention discloses a terminal for performing bidirectional live sharing and intelligent monitoring and a method thereof. The terminal comprises a camera, an audio acquisition unit, a displayer, a loudspeaker and a transceiver. The transceiver transmits videos and audios, which are respectively acquired by the camera and the audio acquisition unit, to a specific address in real time via a dedicated channel, receives the videos and the audios in real time from the specific address via the dedicated channel and outputs the videos and the audios via the displayer and the loudspeaker respectively, and the transceiver is responded to identification of a person or a specific person, or a specific motion, or an abnormal situation in the videos and the audios acquired by the camera and the audio acquisition unit respectively. The transceiver transmits prompt information to the specific address in real time. The dedicated channel is established in advance. The terminal is used for trusted fixed occasions. Compared with terminals in the prior art, user real-time communication experience is enhanced so that a user monitors the onsite situation of the specific occasion or the specific person in a more convenient and safer way.

A display apparatus selects one of multiple wireless communication apparatuses and activates the selected wireless communication apparatus as a second access point of a second group. The activated wireless communication apparatus establishes the second group including multiple wireless communication apparatuses. After the second group is thus established, the transmission power of the wireless communication apparatus activated as the access point and the multiple wireless communication apparatuses included in the second group is controlled.

The invention provides a method for quickly detecting and identifying fault repair bicycles of shared bicycles, and a special carriage transfer vehicle for solving the problem of discovering breakageand repair bicycles from a stack of shared bicycles without adding additional manpower cost. The efficiency of discovering the breakage bicycles is higher than that of a manual direct two-dimensionalcode scanning mode or the like. The method is to add an identification device on the special carriage transfer vehicle of daily used deployed shared bicycles of a shared bicycle company; the identification device is installed in the special carriage transfer vehicle for transporting the shared bicycles and is limited by a wireless communication pile; when the shared bicycles are loaded and unloaded from the carriage vehicle and are deployed to other areas, only one shared bicycle achieves wireless communication in an air travelling orbit interval of the manually transferred shared bicycles through the direction limiting board technology. A large number of repair bicycles are screened. The objective of the invention is achieved.

The invention relates to a ZigBee and WiFi networking communication cognitive anti-interference method, and belongs to the technical field of heterogeneous wireless networks. The method comprises thefollowing steps: S1, a cognitive module reduces interference; The cognitive module constructs a flow graph by using GNU Radio, senses the surrounding spectrum environment by combining USRP operation,and stores spectrum information and amplitude information obtained by sensing by using a file; And S2, the gateway function module carries out networking communication. According to the invention, theGNU Radio is combined with the USRP to realize the cognitive module; Different working frequencies are configured for ZigBee and WiFi, communication interference between networks of the same frequency band is avoided, and ZigBee-WiFi protocol stacks are constructed in GNU Radio to form ZigBee-WiFi protocol stacks. And a gateway module is realized by combining the WiFi gateway flow diagram with USRP, so that networking communication of the heterogeneous wireless network ZigBee and WiFi is realized by using software radio.

A wireless communication method comprises steps of: trying a communication through a RF communication module by means of a control module in the communication unit for unmanned automatic transfer device; detecting a frequency band having a noise interference by means of the control module; avoiding the noise interference according to the detection result thereof by means of the control module; and carrying out a normal communication between the communication unit for unmanned automatic transfer device and the communication unit for equipment.

The invention provides a domestic humidifier control system based on a power line carrier. The domestic humidifier control system comprises receiving end carrier circuits, receiving end control circuits, receiving end switching circuits, a power line carrier module, a control chip, a transformer, a communication module and a network background. The domestic humidifier control system is convenient to mount, only an existing power line needs to be properly refitted and added, a humidifier does not need to be completely replaced, and therefore the problem that corresponding types are hard to find does not exist. Transmission of inner control signals is achieved in the manner of the power line carrier, and the communication interference problem brought by too many devices is effectively avoided. User control is achieved in the manner of short messages, control can be completed well as long as users are not illiteracies and can use the basic function of mobile phones, and the difficulty of most of middle aged and elderly people learning to use APP is effectively solved.

The invention provides an automatic matching method and device between wireless charging devices and a storage medium. Each wireless charging device comprises a transmitting end and a receiving end for wireless charging, the transmitting end and the receiving end perform data communication through a wireless radio frequency module, and the method comprises the following steps: acquiring an idle transmitting end; sending a wireless power transmission time sequence to the target transmitting end; after detecting the electric energy transmitted according to the wireless electric energy transmission time sequence and establishing communication with the target transmitting end, calculating a private address according to the equipment information of the receiving end and the target transmittingend, and taking the private address as a communication address of the receiving end and the target transmitting end; and performing data communication through the private address. An additional wireless communication module capable of networking is not needed, and one-to-one automatic matching is realized by changing the communication address of the wireless radio frequency module. Communication interference in a public area is overcome by adopting the transmitting end and the receiving end which are communicated through the private address, and data transmission errors in the wireless charging process are avoided.

The embodiment of the invention discloses a detection networking system and method based on a tree network, and a storage medium. According to the technical scheme provided by the embodiment of the invention, by configuring a concentrator as a root node, detecting each routing device through routing, configuring the routing devices as branch nodes, and a connection relationship between the root node and the branch nodes and a connection relationship between the root node and the branch nodes are constructed, and by detecting each terminal device through the concentrator and configuring the terminal devices as leaf nodes, connection relationships between the root node and the leaf nodes and between the branch nodes and the leaf nodes are constructed. By the adoption of the technical time period, the connection relation between the nodes is constructed in an inter-node detection networking mode, communication interference caused by random communication networking is avoided, the stability of communication between the nodes of the tree network is further guaranteed, and networking between the nodes is optimized.

The invention belongs to the technical field of automobile testing, particularly relates to a system for testing field performance of a tire pressure monitoring system (TPMS) and aims at solving the problem that field performance of an automobile cannot be tested during road driving in the prior art. The system is characterized by comprising an actuator and a controller, wherein the actuator is used for measuring the internal pressure of all tires in real time and transmitting pressure signals to the controller, and signals indicating tire pressure in a driving state are generated under the control of control signals of the controller; the controller receives the tire pressure signals sent from the actuator, the tire pressure signals are processed according to set control flow, and then control signals are sent to the actuator to control the actuator to act to complete measurement and regulation of tire pressure. According to the system provided by the invention, a tire pressure closed-loop control system based on a practical gas circuit is established by virtue of the actuator and the controller, closed-loop regulation is performed on the gas circuit according to a difference between target tire pressure and current tire pressure, and thus a driving pressure regulation function is achieved under the condition of generating no communication interference.

The invention discloses a wrong start filtering method for a transient wave-recording fault indicator. The method comprises the following steps: firstly, distinguishing a suspected short-circuit failure and a suspected grounding failure occurring at present according to data acquired by each phase of acquisition unit; and further judging whether the failure is a false report or not according to the judgement result. In the method, the failure indicator firstly judges whether wrong start is performed or not on an aggregation unit, thereby avoiding further processing of the wrong start and the resulting power consumption waste, and avoiding the communication interference with a main station. The method has important significance for the application, operation and maintenance as well as healthy development of power distribution automation.

Embodiments of the present invention provide a vehicle-mounted T-BOX control method and a vehicle-mounted T-BOX. The control method comprises the steps of determining a state of a first communication module and a state of a second communication module; and according to the state of the first communication module and the state of the second communication module, controlling the first communication module and the second communication module to communicate at different time, wherein the first communication module is used for communicating with a communication device by using a WiFi communication technology, and the second communication module is used for communicating with the communication device by using a 2G / 3G / 4G / 5G communication technology. Through adoption of the method, communication interference is prevented, and communication reliability is improved.

The invention belongs to the field of shared bicycles and relates to an efficient way and smart device for quickly identifying, reporting, and marking impaired shared bicycles. A large number of recorded impaired bicycles cannot be manually dealt with in due time, and an intelligent special-purpose rotor unmanned plane is utilized. The multi-rotor unmanned plane is equipped with an image acquisition device, an intelligent system, an identification repair reporting shared bicycle device and a spraying marking device. When the intelligent high-speed equipment flies by the upper space of a sharedbicycle stop queue, the shared bicycles on the path are scanned in the three-dimensional communication space area; in the scanning time-space area, a limited space communication probe is in one-to-one wireless communication with the shared bicycles; after retrieval, if repair reporting of one shared bicycle is carried out earlier, the caution picture and text is sprayed; high-efficiency guidanceis provided for manual processing.

The invention relates to a combinable distributed control system and a realization method thereof. The system comprises a distributed control system host serving as a system core portion, and a slave1-distributed system communication module, a slave 2-distributed system digital IO module and a slave 3-distributed system analog quantity IO module and so on, which can realize each single function and is mutually independent. The host and the slaves are initialized and in a standby state. The host communicates with the each slave by identifying single ID of each slave. The single ID of each slave ensures that the slaves are independent to each other, so that it can be ensured that in the distributable control system, required system slaves and host logics can be built according to differentsystem level functions.

The invention relates to a battery swap action control system based on a central processing unit and a programmable logic device. Control instructions and configuration information are written by the central processing unit to a master control programmable logic device and are then distributed by the master control programmable logic device to corresponding sub-control programmable logic devices, so as to control mechanical and electrical equipment within a battery swap station; the central processor and the master control programmable logic device communicate through a GPMC parallel bus, and the master control programmable logic device and the sub-control programmable logic devices are in serial fiber communication based on Manchester encoding, such that a higher transmission rate and anti-jamming performance are gained and the real-time performance and reliability of information transmission are ensured; and the sub-control programmable logic devices are independent of each other in software, hardware, machinery and electrical aspects, with no direct information interaction, which allows the system to have high flexibility in upgrading and maintaining. Compared with a traditional PLC way, the invention greatly reduces the cost of hardware.

One wireless communication network 3 determines an interference degree with the corresponding other wireless communication network 3 for each channel by accessing a CMDB 2 storing positional information, channel information, and respective coexistence methods of other wireless communication networks 3, selects other wireless communication network 3 to coexist, a coexisting channel, and a coexisting method thereof based on the interference degree for each determined channel, and reflects the selected network, channel, and coexistence method to the CMDB 2, and transmits a signal for requesting coexistence with respect to selected wireless communication network, to the CMDB 2, and the selected wireless communication network 3 performs a control for coexistence in the communication space between one wireless communication network and the selected wireless communication network based on the channel reflected to the CMDB 2 and the coexisting method thereof.

The invention discloses a remote transmission fuel gas meter collector system based on WIFI (wireless fidelity). The remote transmission fuel gas meter collector system based on the WIFI comprises a power supply module, an MCU (microprogrammed control unit), a memory module, a wireless module, a WIFI module, a USB-OTG (universal serial bus-on-the-go) module, a card operation module and an RTC (real-time clock) module, wherein the MCU is in communication connection with the power supply module, the memory module, the wireless module, the WIFI module, the USB-OTG module, the card operation module and the RTC module. The WIFI module is used for realizing data interaction between the collector system and a user mobile phone; meanwhile, the USB-OTG module is used as assistance; the data format is simple; the transmission speed is high; the operation requirements of different mobile phones can be met; no connection limit exists; high universality is realized.

The invention discloses a terminal and a method for two-way live sharing and intelligent monitoring. Wherein, the terminal includes: a camera, an audio collection unit, a display, a loudspeaker, and a transceiver, wherein the transceiver sends the video and audio collected by the camera and the audio collection unit to a specific address in real time through a dedicated channel, and transmits the video and audio collected by the audio collection unit through a dedicated channel. Receive the video and audio from the specific address in real time and output them through the display and speakers respectively, and identify people or specific people, or specific actions, or abnormal conditions in response to the video and audio collected from the camera and audio acquisition unit respectively , the transceiver sends reminder information to the specific address in real time, wherein the dedicated channel is established in advance, and the terminal is used in a trusted fixed place. Compared with the prior art, the present invention improves the user's real-time communication experience, and is beneficial for the user to more conveniently and safely monitor the on-site situation of a specific place or a specific person.

The invention discloses a method for communication between a vehicular radio-frequency identification card and a wireless base station. The wireless base station is provided with a wake-up channel, a field positioning channel and a plurality of data channels, which work independently; the vehicular radio-frequency identification card is provided with a wake-up channel, a field positioning channeland data channels, which correspond to each channel of the wireless base station; the wake-up channel of the wireless base station transmits a wake-up code, and the vehicular radio-frequency identification card receives the wake-up code by the wake-up channel of the vehicular radio-frequency identification card; the field positioning channel of the wireless base station transmits a field positioning code, the vehicular radio-frequency identification card receives the field positioning code by the field positioning channel of the vehicular radio-frequency identification card, and one data channel of the vehicular radio-frequency identification card reports data to the corresponding data channel of the wireless base station after the field positioning channel of the vehicular radio-frequency identification card receives the field positioning code. Because each channel of the wireless base station works independently, the vehicular radio-frequency identification card selects one data channel to report the data, so that communication information between the vehicular radio-frequency identification card and the wireless base station is not easy to lose, and the anti-jamming capability is high.

The invention discloses a doctor program control instrument of an implanted type medical system, wherein the doctor program control instrument has the demonstration function. The doctor program control instrument comprises a first communication module, a communication interface, a preset virtual implanted type medical apparatus file and an instruction parsing assembly, wherein the first communication module is in wireless communication with an implanted type medical apparatus, and the preset virtual implanted type medical apparatus file is used for demonstration modes and is in interactive communication with the communication interface. The instruction parsing assembly of the doctor program control instrument parses instructions generated by operation of an operator and is in data interaction with the virtual implanted type medical apparatus file according to parsed results. When the demonstration is carried out, as for a doctor, the technical effect same as that of real wireless communication of the implanted type medical apparatus is generated. The invention further discloses a demonstration function achieving method of the doctor program control instrument of the implanted type medical system. Compared with the prior art, limitation of hardware equipment of the external implanted type medical apparatus is avoided, the doctor can conveniently carry out the training demonstration, a producer can conveniently carry out testing and debugging in the development period, an interface is flexibly and conveniently operated, and meanwhile communication interference between other wireless devices during the demonstration can be avoided.

The present invention relates to an apparatus for optical communication for an elevator, the apparatus reducing the optical communication distance to the shortest distance and comprising: a data transmitter installed on the wall or ceiling of the hall in front of an elevator shaft; a data receiver installed behind a hall button cover of a building elevator and connected wirelessly to the data transmitter to receive digital data therefrom; an antenna built into the hall button cover and connected to the a data receiver; an optical communication transmitter, connected by wire to the a data receiver and installed on the wall of the elevator shaft, for converting digital data to optical data and transmitting the latter; an optical communication receiver, installed in the elevator at a location facing the optical communication transmitter when the elevator is stopped to allow passengers to get in and out, for receiving data the optical communication transmitter by means of wireless optical communication; a controller, connected by wire to the optical communication receiver and a control room and installed in the ceiling of the elevator, for receiving data from the optical communication receiver to convert into image data, and being controlled by the control room; and a monitor, connected by wire to the controller and installed on the door, wall or ceiling of the elevator, for receiving and displaying image data from the controller.

The present invention relates to an apparatus for optical communication for an elevator, the apparatus reducing the optical communication distance to the shortest distance and comprising: a data transmitter (10) installed on the wall or ceiling of the hall in front of an elevator shaft; a data receiver (30) installed behind a hall button cover (20) of a building elevator and connected wirelessly to the data transmitter (10) to receive digital data therefrom; an antenna (32) built into the hall button cover (20) and connected to the a data receiver (30); an optical communication transmitter (40), connected by wire to the a data receiver (30) and installed on the wall of the elevator shaft (P), for converting digital data to optical data and transmitting the latter; an optical communication receiver (50), installed in the elevator (E) at a location facing the optical communication transmitter (40) when the elevator (E) is stopped to allow passengers to get in and out, for receiving data the optical communication transmitter (40) by means of wireless optical communication; a controller (C), connected by wire to the optical communication receiver (50) and a control room and installed in the ceiling of the elevator (E), for receiving data from the optical communication receiver (50) to convert into image data, and being controlled by the control room; and a monitor (M), connected by wire to the controller (C) and installed on the door, wall or ceiling of the elevator (E), for receiving and displaying image data from the controller.

The embodiment of the invention discloses a mobile terminal shielding method and an interference base station. The method comprises the following steps: if the interference base station judges that the shielding triggering condition is satisfied, the shielding control parameter and the shielding service type corresponding to the target area are obtained; replacing the initial control parameter inthe broadcast message with the shielding control parameter, and sending the broadcast message to the mobile terminal in the target area so that the mobile terminal in the target area preferentially selects the interfering base station to establish the communication connection; if the access request sent by the mobile terminal according to the shielding control parameter is received, the access request corresponding to the mobile terminal in the shielding terminal whitelist is responded to according to the preset shielding terminal whitelist, and the mobile terminal is shielded according to theshielding service type after the communication connection is established. By applying the scheme of the invention, the service shielding of the mobile terminal to be shielded can be realized and thecommunication interference to the mobile terminal without shielding can be reduced at the same time.

The invention provides a cooperative control device of a distributed photovoltaic grid-connected generation system. The device is composed of a single centralized grid-connected inverter and the common direct current bus of a number of MPPT combiner boxes. A voltage coding module is added in a centralized grid-connected inverter. The voltage coding module is located on the common direct current bus on the single centralized grid-connected inverter side. One end is connected with the direct current bus, and the other end is connected with a number of MPPT combiner boxes. Each MPPT combiner box is added with a voltage decoding module, and the voltage decoding module is located on the direct current bus on the combiner box side. A number of voltage decoding modules are correspondingly connected with a voltage coding module. The voltage coding module outputs the common direct current bus voltage reference value for adjusting the inverter to the inverter CPU according to the current instruction of the centralized grid-connected inverter. The voltage change of the common direct current bus is controlled, and the adjustment instruction is transmitted to the MPPT combiner boxes in the form of voltage. The voltage decoding modules identify the issued dispatch instruction according to the voltage of the direct current bus of the combiner boxes and output a control instruction, and the combiner boxes execute the control instruction.

The invention provides an intelligent gateway control method based on a mobile terminal in a local area network. An intelligent gateway that has accessed to a local area network is controlled by the mobile terminal that has accessed to the local area network. The method comprises the following steps: step 1, the intelligent gateway monitors a fixed IP address and a fixed communication port of a UDP; step 2, the mobile terminal sends a device search instruction to the fixed UDP address and the UDP communication port; step 3, the intelligent gateway performs tea decryption by using a public keywhen receiving the device search instruction sent by the mobile terminal in a UDP unicast mode, then etracts the IP address and the UDP communication port of the mobile terminal and replies a UDP unicast data packet to the mobile terminal; and step 4, the mobile terminal extracts the information of the intelligent gateway from the UDP unicast data packet when receiving the UDP unicast data packetreplied by the intelligent gateway, and starts to perform working communication with the intelligent gateway.

The present invention relates to a wireless communication method that utilizes multiple frequency bands to avoid noise interference. Specifically, it involves a method of constructing a normal wireless communication link by using two or more communication modules with different available frequency bands or different communication methods to avoid various noises from interfering with the communication during the communication process between the unmanned transfer device and the manufacturing equipment. Multi-band wireless communication method to avoid noise interference.

The invention belongs to the technical field of automobile testing, particularly relates to a system for testing field performance of a tire pressure monitoring system (TPMS) and aims at solving the problem that field performance of an automobile cannot be tested during road driving in the prior art. The system is characterized by comprising an actuator and a controller, wherein the actuator is used for measuring the internal pressure of all tires in real time and transmitting pressure signals to the controller, and signals indicating tire pressure in a driving state are generated under the control of control signals of the controller; the controller receives the tire pressure signals sent from the actuator, the tire pressure signals are processed according to set control flow, and then control signals are sent to the actuator to control the actuator to act to complete measurement and regulation of tire pressure. According to the system provided by the invention, a tire pressure closed-loop control system based on a practical gas circuit is established by virtue of the actuator and the controller, closed-loop regulation is performed on the gas circuit according to a difference between target tire pressure and current tire pressure, and thus a driving pressure regulation function is achieved under the condition of generating no communication interference.

The invention relates to the technical field of fire alarm, in particular to a household combustible gas detector with an index curve correction function, which can improve the detection precision andensure the communication effect, a CPU module comprises a single chip microcomputer U1, the single chip microcomputer U1 is in electric control connection with a calibration signal processing circuitand a bus communication circuit, the bus communication circuit comprises an optocoupler U4, a first pin of the optocoupler U4 is connected with a 3.3 V power supply, a second pin of the optocoupler U4 is connected with a 42 pin of the single-chip microcomputer U1 through a resistor R37, a fourth pin of the optocoupler U4 is connected with a DC + direct-current power supply, and a third pin of theoptocoupler U4 is connected with one end of a resistor R30. The other end of the resistor R30 is connected with a base electrode of a triode Q3 and one end of a resistor R31, and a third pin of the triode Q3 is connected with one end of a resistor R29. The other end of the resistor R29 is connected with one end of a resistor R33, an anode of a diode D9 and a pin 3 of a common-cathode diode D7; apin 2 of the common-cathode diode D7 is connected with a pin 1 of a common-anode diode D8, one end of a capacitor C28, one end of a common-cathode voltage-regulator tube D6 and one end of a resistor R27; and a pin 1 of the common cathode diode D7 is connected with a pin 2 of the common anode diode D8, one end of the capacitor C29, one end of the resistor R28 and the other end of the common cathodevoltage stabilizing tube D6.

The invention discloses a lifting tool system capable of realizing lithium battery power supply and wireless communication, which can reduce a reeling mechanism in a crane in the prior art and does not need cables, so that the whole machine is relatively simple in structure and relatively low in cost, and which can also avoid the problem of communication interference in a CAN system in the prior art. The technical scheme is that: the lifting tool system comprises a lithium battery power supply device and a wireless communication device, wherein the lithium battery power supply device comprises a lithium ion battery pack, an inverter, a filter and a voltage transformer; the lithium ion battery pack directly supplies power to a lifting tool motor after subjected to the inversion treatment of the inverter; the lithium ion battery pack, as a control power supply, supplies power to a lifting tool after subjected to the inversion treatment of the inverter, the filtering treatment of the filter and the voltage reduction treatment of the voltage transformer; the wireless communication device comprises a gateway module, a controller local-area network bus and a wireless module; the controller local-area network bus is connected with the wireless module through the gateway module and connected to a lifting tool controller through the Ethernet.