34results about How to "Improve wireless transmission efficiency" patented technology

The invention relates to a method and a system for lowering long term evolution (LTE) uplink data transmission delay. The method comprises following steps that a base state determines an LTE uplink data type; and the base station sets corresponding uplink data transmission resource predistribution amount according to the LTE uplink data type, and sends, according to the uplink data transmission resource predistribution amount, an uplink resource dispatching authority corresponding to the LTE uplink data to a terminal. Different uplink data transmission resource predistribution amounts are directly set according to different types of LTE uplink data, and UL Grant is sent to the terminal according to the uplink data transmission resource predistribution amount. Due to the uplink self-adaption resource predictive scheduling method, delay caused by an SR request and a BSR report is shortened, the transmission delay of LTE uplink data is shortened, and the wireless transmission efficiency under the long delay channel condition is improved.

The invention belongs to the technical field of wireless power transmission, and particularly relates to a magnetic coupling dual-mode wireless power transmission device and a control method thereof. By the magnetic coupling dual-mode wireless power transmission device, wireless power transmission efficiency can be improved, and power loss is small. The magnetic coupling dual-mode wireless power transmission device comprises a transmitting end and a receiving end and is structurally characterized in that the transmitting end comprises a primary induction coil, a primary resonance coil, a primary resonance capacitor, a primary switch, a high-frequency inversion circuit, an IGBT driving circuit, a switch power source, an external power source interface, a transmitting end control unit, a primary induction coil voltage sampling module, an ADC conversion circuit A and a Wi-Fi module A, and a power input port of a switch power source is connected with the external power source interface while a power output port of the same is connected with a power input port of the high-frequency inversion circuit.

The invention relates to an inland shore-based AIS (Automatic Identification System) ship data wireless transmission device and a transmission method. The device comprises a communication antenna, a solar cell panel, a storage cell, a GPRS communication module, an AIS data filtering module, an AIS shore-based receiver, a protection box and a support rod. The communication antenna, the solar cell panel and the protection box are fixed on the support rod. The storage cell, the GPRS communication module, the AIS data filtering module and the AIS shore-based receiver are fixed in the protection box. The connection is that the storage battery is unidirectionally connected with the GPRS communication module, the AIS data filtering module and the AIS shore-based receiver. The AIS data filtering module is bidirectionally connected with the GPRS communication module and the AIS shore-based receiver. The GPRS communication module is connected with the communication antenna through a radio frequency cable. The solar cell panel is connected with the storage cell. The technical effects are that redundant AIS message information can be filtered, the wireless transmission efficiency is improved, the public network transmission costs are reduced, and the device and the method are especially applicable to remote inland waterway regions in which AIS standard base stations cannot be applied due to the fact that there is no infrastructure such as a basic power supply and the internet.

The invention relates to the technical field of electric energy quality devices, and particularly relates to a system and a method for managing the comprehensive electric energy quality of a rural urban network substation. The system comprises a plurality of distribution transformer substation area parameter acquisition modules used for collecting the operation parameters of power distribution equipment and the environment parameters of the distribution transformer substation area; a distribution transformer substation area parameter judgment module used for judging whether the received operation parameters of the power distribution equipment and the environment parameters of the distribution transformer substation area exceed a preset parameter threshold value or not respectively, and sending a judgment result to a distribution transformer substation area early-warning information editing module if the parameters are judged to exceed the preset parameter threshold value; and the distribution transformer substation area early-warning information editing module used for editing the distribution transformer substation area early-warning information according to the received judgmentresult, and sending the information to a distribution transformer substation area automatic repair module, a distribution transformer substation area early-warning information database and a terminalrespectively in real time. According to the invention, the intelligent integrated management of the distribution transformer substation and the economic operation of a distribution transformer are achieved. The manual labor amount and the labor cost are saved. The good economic benefit is achieved.

The invention discloses an ultrasonic spindle. The ultrasonic spindle comprises a spindle shell, a rotating shaft, a front end cover, a transmitting frame and an ultrasonic wireless transmitting device. The rotating shaft is rotatably arranged in the spindle shell in a penetrating mode, and a mounting hole is formed in the front end face of the rotating shaft. The front end cover is arranged at the front end of the spindle shell and surrounds the rotating shaft. The transmitting frame is directly installed on the front end face of the front end cover and surrounds the rotating shaft, and a first containing groove surrounding the rotating shaft is formed in the front end face of the transmitting frame. The transmitting frame is connected with the front end cover through a bolt so as to be convenient to disassemble and assemble. The ultrasonic wireless transmitting device is arranged in the first containing groove and comprises a transmitting coil arranged around the rotating shaft and atransmitting ferrite used for containing the transmitting coil. Compared with the prior art, the ultrasonic spindle is excellent in performance, good in machining effect, wide in application range, capable of machining multiple materials and long in service life; and in addition, the invention further discloses ultrasonic machining equipment adopting the ultrasonic spindle.

The invention discloses a base station anti-interference antenna and a WiFi base station mesh network system using the same. A base station anti-interference antenna module comprises a plurality of high-frequency signal transmit-receive units and an antenna control unit, wherein the high-frequency signal transmit-receive units are respectively towards different directions, and the antenna control unit is respectively and electrically coupled with the plurality of high-frequency signals transmit-receive units and selects one of the high frequency transmit-receive units to transmit or receive a round polarized high frequency signal according to a signal transmit-receive requirement of a signal processing unit electrically coupled with the antenna control unit. The WiFi wireless base station mesh network system comprises two WiFi wireless base stations which are respectively provided with the base station anti-interference antenna module and the signal processing unit, and the high frequency signal transmitted between the wireless base stations is a round polarized signal.

The invention relates to mobile equipment with a wireless charging and discharging function, which is characterized by further comprising a transmitting switch (MOS90), a protection diode (D90), a high-pass filtering capacitor (C92), a sampling site (P98), a voltage stabilizing tube (D92), a half-wave rectification diode (D91), a sampling resistor (R91), a current-limiting resistor (R92), a sampling capacitor (C91), a rectifier bridge (BT1), an electric energy receiving switch (MOS92), an electric energy receiving control point (P94), a change-over switch (MOS93), a coil (L2), a power supply point (VCC9), a ground point (GND9), a transmission control point (P90), an electric energy receiving point (S92), a switching control point (P93), a sampling output point (S91), a single chip microcomputer (PIC12F510-2), a rechargeable battery (BAT), a low-pass filtering inductor (L99) and a power supply output capacitor (C98). The invention further relates to a device, which is additionally provided with a control program on the basis of the solution. The mobile equipment and the device provided by the invention are low in cost, flexile in application, long in service life and capable of mutually transmitting electric energy and information.

The invention relates to the technical field of ultrasonic machining, and discloses an ultrasonic machining device and an ultrasonic spindle thereof. The ultrasonic machining device comprises a spindle shell, a rotating shaft assembly, a front end cover and an ultrasonic wireless transmitting device, wherein the rotating shaft assembly is rotationally arranged in the spindle shell, the front end of the rotating shaft assembly protrudes out of the front end face of the spindle shell, and a mounting hole is formed in the front end face of the rotating shaft assembly; the front end cover is installed at the front end of the spindle shell and is annularly arranged on the periphery of the rotating shaft assembly, the rear end face of the front end cover is attached to the front end face of thespindle shell, and a first containing groove annularly formed in the rotating shaft assembly is formed in the front end face of the front end cover; and the ultrasonic wireless transmitting device isarranged in the first containing groove and comprises a transmitting coil and a transmitting ferrite. According to the ultrasonic machining device and the ultrasonic spindle thereof, the device has good machining precision and machining efficiency, the device is suitable for machining working conditions in a larger range, and more materials can be machined.

The invention provides an MEMS-micromachined planar coil-based wireless charging device and a preparation method thereof. The wireless charging device comprises a base bottom box, a base top box, a receiving coil and a transmitting coil, wherein the transmitting coil is arranged in the base bottom box and is connected with a rectifier circuit, a detection circuit, a control circuit and a drive circuit in the base bottom box; the receiving coil is arranged in the base top box and is connected with the rectifier circuit and a converter in the base top box; the receiving coil and the transmitting coil are hollow planar coils; the receiving coil is arranged in the transmitting coil; and the transmitting coil and the receiving coil are prepared by an MEMS micromachining technology. By an interpolation structure, accurate positioning can be achieved; the wireless charging efficiency is effectively improved; the loss is reduced; the radiating area is reduced; meanwhile, the wireless charging device can prevent water and withstand external mechanical collision; and charging is relatively safe and reliable.

The invention discloses a wireless power transmission system based on a transmission line, belonging to the field of wireless power transmission, which solves the problems of complex structure of theexisting magnetic coupling resonant wireless power transmission system due to the adoption of a centralized parameter circuit network for impedance matching. The wireless power transmission system comprises a main transmission unit based on a long line connecting with a high-frequency power supply, wherein the said main transmission unit, an impedance matching unit based on the lossless short line, a filtering unit and a magnetic coupling resonator unit are sequentially connected, and the magnetic coupling resonator unit is connected with aload. The said main transmission unit is used for long-distance transmission of electric energy; the said impedance matching unit is used to make the said main transmission unit realize impedance matching with the magnetic coupling resonator unit; the filtering unit is use to filter the ultraharmonics; the magnetic coupling resonator unit is used to realize wireless power transmission between the high-frequency power supply and the load. The radio power transmission system based on a transmission line of the invention applies to the efficient wireless transmission of electric energy and the power of stable power supply and load.

An electronic circuit used for a wireless charging system is disclosed. The electronic circuit is characterized by comprising an emitting switch (MOS90), a protection diode (D90), a high-pass filtering capacitor (C92), a sampling terminal (P98), a voltage-regulator tube (D92), a half-wave rectification diode (D91), a sampling resistor (R91), a sampling capacitor (C91), a rectifier bridge (BT1), an electric energy receiving switch (MOS92), an inverter (T92), a selector switch (MOS93), a coil (L2), a power supply point (VCC9), a ground terminal (GND 9), an emitting control point (P90), an electric energy receiving point (S92), a switching control point (P93), a sampling output point (S91), a single chip microcomputer (PIC12F510-2), a rechargeable battery (BAT), a low-pass filtering inductor (L99) and a power supply output capacitor (C98). A controllable capacitor (CS92) is added on the basis of the technical scheme. A system is additionally provided with a control program on the basis of the technical scheme. The electronic circuit is low in cost, flexible in use, long in service life and can realize mutual electric energy and information transmission.

The invention discloses an adaptive voltage-constant high-efficiency wireless power supply system which comprises an energy emission module, an energy reception module, a coil module and a voltage-constant closed-loop control module; the energy emission module comprises an inverse E-type power amplifier module and a maximal state adaptive module of a power amplifier; the energy reception module comprises a rectification module, a voltage stabilization module, a receiving coil and a capacitor; the coil module comprises a transmitting coil and a relay coil; and the voltage-constant closed-loop control module comprises a Bluetooth communication module, a power regulation module and a PC-end monitoring and regulation module. Via the wireless power supply system, the power amplifier is in the optimal work states of zero-current OFF and zero-current derivative OFF, the efficiency of wireless energy transmission is improved, a stimulation parameter can be adjusted in the PC-end monitoring andregulation module, auxiliary functions including data collection, data communication and remote control are integrated, performance of an implantable medical system is further improved, and the application range and practicality of the medical system in clinical medicine are improved.

A method of controlling a receiver and a transmitter to handle a transmission window size change procedure is disclosed. The method includes driving the receiver to deliver a control message having a window size parameter to the transmitter for adjusting a transmission window size of the transmitter, and driving the transmitter to output an acknowledgement message to the receiver and adjust the transmission window size according to the window size parameter when the transmitter receives the control message.

A wireless network connection device and method are provided for setting a wireless connection to an access point (AP). The device includes a radio frequency (RF) module, a base band (BB) module, and a control module. The RF module receives a packet transmitted by the AP. The BB module processes the packet to generate a signal strength (SS) corresponding to the AP. The control module generates an adjustment signal according to the SS, and adjusts a gain of the RF module according to the adjustment signal.

The invention discloses a working frequency optimization method of a wireless power transmission system based on a three-coil structure. The working frequency optimization method comprises the following steps: 1, determining the resonant frequency f of the optimized wireless power transmission system, and obtaining the resonant angular frequency w0 according to the resonant frequency f; and 2, setting the angular frequency of the transmitting coil as a first peak angular frequency w2 or a second peak angular frequency w3. According to the invention, an efficiency calculation method of a three-coil structure is established through a reflection impedance principle, and the wireless transmission efficiency is improved only by adjusting the working frequency of an in-vitro transmitting power source under the condition of avoiding changing factors such as a load, a coil size structure, a distance and the like. When the wireless power supply is applied to implantable medical treatment, the defect that parameters of an in-vivo coil are difficult to adjust can be overcome under the condition that the efficiency is reduced due to a frequency splitting phenomenon, and high-efficiency wireless power supply of implantable medical treatment is realized.

The invention provides a single transmitter to double receiver vacant resource allocation method which comprises a control channel allocation process and a data channel allocation process. The control channel allocation process comprises the steps that a control channel is divided into a reserved time slot and a competition time slot in time domain; at some point, if a node needs to use a control channel and if the reserved time slot available for the node is found, the reserved time slot is directly used; and if the reserved time slot available for the node is not found, the node competes for the competition time slot with other nodes. According to the data channel allocation process, the control channel is used to negotiate a data channel which can be used. According to the invention, the multi-channel way is used to realize parallel transmission of node data, which effectively improves the network capacity; a multi-channel frequency division multiplexing technology is used, which effectively reduces mutual interference of neighbor nodes and improves the wireless transmission efficiency; and a TDMA hybrid channel access method is used, which effectively reduces the collision probability of data packets and realizes efficient packet transmission.

The invention discloses an electric automobile wireless charging system based on the Internet of Things. The electric automobile wireless charging system based on the Internet of Things comprises a power supply end, a power supply controller and a power receiving end, wherein the power supply end comprises a network source, a distributor, a microwave power source, a waveguide tube and a microwave transmitting array antenna, the network source, the distributor, the microwave power source, the waveguide tube and the microwave transmitting array antenna are connected in sequence, the distributor and the microwave power source are arranged in a lamp pole of a street lamp, the distributor is connected with the underground network source through a coaxial cable, an antenna support is arranged on the side, facing a road surface, of the lamp pole of the street lamp, the transmitting array antenna is arranged at the outer end of the antenna support, the waveguide tube is arranged in the antenna support, the power supply controller is connected with the distributor and the microwave power source, the power receiving end comprises a wireless microwave receiving antenna and a rectification electric energy receiver connected with the wireless receiving antenna, power is supplied to a rechargeable battery by the output end of the rectification electric energy receiver, the control end of the rectification electric energy receiver is connected with a vehicle-mounted controller, and power is supplied to the rechargeable battery under the control of the vehicle-mounted controller. According to the electric automobile wireless charging system based on the Internet of Things, a wireless charging pole is combined with the street lamp, and the electric automobile wireless charging system capable of achieving roadside charging conveniently and rapidly is provided.

The invention provides an MEMS-micromachined planar coil-based wireless charging device and a preparation method thereof. The wireless charging device comprises a base bottom box, a base top box, a receiving coil and a transmitting coil, wherein the transmitting coil is arranged in the base bottom box and is connected with a rectifier circuit, a detection circuit, a control circuit and a drive circuit in the base bottom box; the receiving coil is arranged in the base top box and is connected with the rectifier circuit and a converter in the base top box; the receiving coil and the transmitting coil are hollow planar coils; the receiving coil is arranged in the transmitting coil; and the transmitting coil and the receiving coil are prepared by an MEMS micromachining technology. By an interpolation structure, accurate positioning can be achieved; the wireless charging efficiency is effectively improved; the loss is reduced; the radiating area is reduced; meanwhile, the wireless charging device can prevent water and withstand external mechanical collision; and charging is relatively safe and reliable.

Proposed are a method for coordination between terminal small cells, a system for coordination between terminal small cells, and a terminal, which are used for establishing coordination among a plurality of terminal small cells. The method comprises: determining whether coordination is established between a first terminal small cell and a second terminal small cell; if the coordination between the first terminal small cell and the second terminal small cell is established, starting a detection process of a D2D link between the first terminal small cell and the second terminal small cell; and establishing an X2d interface between the first terminal small cell and the second terminal small cell between which the detection process of the D2D link is started. By means of the technical solution of the present invention, high efficiency coordination between terminal small cells can be realized.

An embodiment of the present invention provides a bluetooth multi-channel receiving method, which relates to the field of bluetooth communication. The method includes: receiving cyclic redundancy check information and load data in multiple bluetooth receiving branches; determining that the current working mode is the first mode or the second mode; in the first mode, according to the multi-channel The cyclic redundancy check information in the Bluetooth receiving branch determines whether the load data in the multi-channel Bluetooth receiving branch is retransmitted; in the second mode, according to the cyclic redundancy check in the multi-channel Bluetooth receiving branch The remaining check information and / or the payload data determine whether the payload data in the multi-channel Bluetooth receiving branch is retransmitted; and the output data is filtered out from the payload data that is not to be retransmitted. The invention also provides a bluetooth multi-channel receiving system and electronic equipment. Effectively reduce the number of retransmissions of the Bluetooth system to improve communication efficiency and complete high-quality and reliable Bluetooth information transmission.

The invention relates to a method and a system for lowering long term evolution (LTE) uplink data transmission delay. The method comprises following steps that a base state determines an LTE uplink data type; and the base station sets corresponding uplink data transmission resource predistribution amount according to the LTE uplink data type, and sends, according to the uplink data transmission resource predistribution amount, an uplink resource dispatching authority corresponding to the LTE uplink data to a terminal. Different uplink data transmission resource predistribution amounts are directly set according to different types of LTE uplink data, and UL Grant is sent to the terminal according to the uplink data transmission resource predistribution amount. Due to the uplink self-adaption resource predictive scheduling method, delay caused by an SR request and a BSR report is shortened, the transmission delay of LTE uplink data is shortened, and the wireless transmission efficiency under the long delay channel condition is improved.

The embodiment of the invention provides a Bluetooth multi-channel receiving method, and relates to the field of Bluetooth communication. The method comprises the following steps: receiving cyclic redundancy check information and load data of each Bluetooth receiving branch in multiple Bluetooth receiving branches; in one mode, when the cyclic redundancy check information in at least one Bluetoothreceiving branch is correct, determining that retransmission is not carried out. The invention further provides a Bluetooth multi-channel receiving system and electronic equipment. The number of times of retransmission of the Bluetooth system is effectively reduced, so the communication efficiency is improved, and high-quality and reliable Bluetooth information transmission is completed.

This invention relates to one data transmission method based on repeat mechanism, which comprises the following steps: send end top layer repeats control unit to generate Upper ARQ agreement data unit; the send end down layer repeats control unit to generate data series module by basic transmission unit and to generate data series block label; send end down layer repeats control unit to generate HARQ agreement data unit to send to receiver end.

The invention discloses a motor bearing fault diagnosis method and device based on signal enhancement and compression edge calculation. The method comprises the steps: (1) installing an acceleration sensor on a motor bearing pedestal to collect vibration signals; (2) performing demodulation, downsampling and signal enhancement on the acquired signals in an edge computing processor, performing compressed encoding on the processed data, transmitting the data to a wireless signal receiving module through a wireless signal transmitting module, and transmitting the data to a computer through an interface adapter; and (3) decoding the received data in a computer, and carrying out spectral analysis on the decoded signal to diagnose the bearing fault type. The method has the advantages that the data is compressed and enhanced by adopting edge calculation on the Internet of Things node, the signal-to-noise ratio of the output signal can be improved, the length of the signal needing to be sent is reduced, the sending time and power consumption are reduced, the bearing fault diagnosis efficiency is finally improved, and the service life of a battery of the Internet of Things node is prolonged.

The invention discloses an adaptive constant-voltage high-efficiency wireless power supply system, which includes an energy transmitting module, an energy receiving module, a coil module and a constant-voltage closed-loop control module, and the energy transmitting module includes an inverse class E power amplifier module and the best state of the power amplifier Adaptive module, energy receiving module includes rectifier module, voltage stabilizing module, receiving coil and capacitor, coil module includes transmitting coil, relay coil, constant voltage closed-loop control module includes Bluetooth communication module, power regulation module and PC monitoring and regulation module. The wireless power supply system of the present invention can make the power amplifier in the best working state of zero-current shutdown and zero-current derivative shutdown, improve the efficiency of wireless energy transmission, and can monitor and adjust the stimulation parameters at the PC end, and integrate data acquisition , data communication, remote control and other auxiliary functions further improve the performance of the implantable medical system and expand the scope and practicability of clinical medicine.

The wireless power transmission system based on the transmission line belongs to the field of wireless power transmission, and solves the problem that the existing magnetic coupling resonant wireless power transmission system has a complex structure due to the use of a concentrated parameter circuit network for impedance matching. The wireless power transmission system: the main transmission unit based on the long line is connected to the high-frequency power supply, the main transmission unit, the impedance matching unit based on the lossless short line, the filter unit and the magnetic coupling resonance unit are connected in sequence, and the magnetic coupling resonance unit is connected to the load . The main transmission unit is used for long-distance transmission of electric energy, the impedance matching unit is used to achieve impedance matching between the main transmission unit and the magnetic coupling resonance unit, the filter unit is used to filter out high-order harmonics, and the magnetic coupling resonance unit It is used to realize wireless power transmission between high frequency power supply and load. The transmission line-based wireless power transmission system of the present invention is suitable for high-efficiency wireless transmission of electric energy and stable power of power source and load.

An electronic circuit capable of performing wireless charging / discharging and receiving / transmitting communication signals is disclosed. The electronic circuit is characterized by comprising an emitting switch (MOS90), a protection diode (D90), a high-pass filtering capacitor (C92), a redundant resistor (R92), a voltage-regulator tube (D92), a half-wave rectification diode (D91), a sampling resistor (R91), a sampling capacitor (C91), a rectifier bridge (BT1), an electric energy receiving switch (MOS92), an electric energy receiving control point (P94), a selector switch (MOS93), a coil (L2), a power supply point (VCC9), a ground terminal (GND 9), an emitting control point (P90), an electric energy receiving point (S92), a switching control point (P93), a sampling output point (S91), a single chip microcomputer (PIC12F510-2), a rechargeable battery (BAT), a low-pass filtering inductor (L99) and a power supply output capacitor (C98). A controllable capacitor (CS92) is added on the basis of the technical scheme. Equipment is additionally provided with a control program on the basis of the technical scheme. The electronic circuit is low in cost, flexible in use, long in service life and can realize mutual electric energy and information transmission.