33results 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 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.

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 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 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.

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.