1192 results about "Low power dissipation" patented technology

The embodiment of the invention discloses an in-memory computing circuit based on a magnetic cache, and the circuit comprises at least one magnetic cache unit, at least one in-memory computing unit, and a timer. The magnetic cache unit in the at least one magnetic cache unit is used for caching data output by the corresponding in-memory computing unit as to-be-processed data within the corresponding data retention time; the timer is used for respectively setting data retention time for the at least one magnetic cache unit; and the in-memory computing unit in the at least one in-memory computing unit is used for extracting the data to be processed from the corresponding magnetic cache unit for calculation and outputting the computed data to other magnetic cache units. According to the embodiment of the invention, the invention achieves the flexible adjustment of the data retention time of the magnetic cache unit in various in-memory calculation scenes, and achieves the provision of a high-capacity cache for the data needed by in-memory computing under the lower power consumption.

This disclosure describes systems, methods, and devices for low-power wake-up signaling. A user equipment (UE) device may detect, by a low-power wake-up receiver of the UE device, a first low-power wake-up signal; detect, by the low-power wake-up receiver, a second low-power wake-up signal; and signal, by the low-power wake-up receiver, based on the second low-power wake-up signal, to the main receiver, that the main receiver is to wake up from a sleep state.

This invention relates to a low-power docking station and its control method. It includes a USB-C interface, a power interface, a sleep power supply module, a system power supply module, a protocol control module, a docking station module, a switch module, a switching module, a microcontroller, and a scanning module. The power interface connects to the voltage input terminal of the sleep power supply module and is connected to the voltage input terminal of the system power supply module via the switch module. The system power supply module connects to the power supply terminals of the docking station module and the protocol control module. The switching module connects to the communication terminals of the USB-C interface, the protocol control module, the microcontroller, and the scanning module. The microcontroller detects the device connection status of the USB-C interface and controls the operating status of the switching module, the switch module, and the scanning module based on the detection results. This allows switching the communication link connection of the USB-C interface, connecting or disconnecting the power input of the system power supply module, and controlling the scanning module to operate when no device is connected. This invention features lower standby power consumption, better compatibility, and convenient operation.

The application provides an electronic work card and a method for low-power transmission positioning, and relates to the technical field of electronics. The electronic work card comprises: an improved positioning module, a customized communication module and a power management module. The improved positioning module comprises a positioning unit and a power switch unit. The positioning unit is used for obtaining a positioning result of the electronic work card. The power switch unit is used for controlling power-off / power-on of the positioning unit according to a power switch control signal, and keeping the positioning unit in a power-off state when positioning is not needed. The customized communication module is connected with the improved positioning module, and is used for entering a sleep state or a wake-up state according to a sleep configuration AT instruction. The positioning result of the improved positioning module is obtained in the wake-up state, and is uploaded to a server. After the positioning result is uploaded to the server, the sleep state is entered. The power management module is connected with the improved positioning module and the customized communication module, and is used for power supply for each module. The application reduces the power consumption of the electronic work card.

The application provides a low-power signal amplitude detection and gain control circuit, method and application. The low-power signal amplitude detection and gain control circuit comprises: a controllable gain amplification module, which is used for receiving and amplifying an input signal; a pulse generation and counting module, which is connected with an output end of the controllable gain amplification module and is used for converting the amplified signal into a pulse and outputting a counting value; and a control module, which is connected with the pulse generation and counting module and the controllable gain amplification module respectively; wherein the control module is used for judging the input signal amplitude according to the counting value and maintaining the counting value in a predetermined counting range corresponding to a target signal amplitude by adjusting the gain of the controllable gain amplification module. In the application, the control module analyzes the pulse counting signal amplitude and compares the signal amplitude with an internal predetermined counting range, dynamically adjusts the gain of the amplification module, thereby stabilizes the circuit output in a desired amplitude interval and avoids the phenomenon of "wrong wave".

The application provides a communication method and a communication device. The method comprises the following steps: receiving first configuration information sent by a network device, wherein the first configuration information indicates measurement parameters and multiple sets of low-power wake-up signal (LP-WUS) parameter sets; measuring a reference signal based on the measurement parameters to obtain a first signal measurement result, wherein the first signal measurement result is used to determine a first LP-WUS parameter set from the multiple sets of LP-WUS parameter sets; sending the first signal measurement result, wherein the first signal measurement result is used to determine the first LP-WUS parameter set used for sending an LP-WUS; and receiving the LP-WUS based on the first LP-WUS parameter set. The method can adapt to a dynamically changing wireless environment, so that the terminal device and the network device can interact with each other in time, and the network performance is improved.

A first wireless transmit / receive unit (WTRU) is disclosed. The WTRU may comprise a first radio, a second radio, and a processor. The processor may be configured to receive first configuration information for monitoring for at least one low power wake-up signal (LP-WUS) transmitted by a network. The processor may also be configured to receive second configuration information for monitoring for at least one LP-WUS transmitted by a second WTRU. Further, the processor may be configured to activate the second radio to monitor for a LP-WUS transmitted by the network based on the first configuration information and to monitor for a LP-WUS transmitted by the second WTRU based on the second configuration information.

The present disclosure provides a method and apparatus for transmitting and receiving signals in a wireless communication system. According to the method and apparatus, a low-power wake-up signal (LP-WUS) may be received through a first receiver, and a second receiver may be triggered based on the reception of the LP-WUS. A length L_w of an on-off keying (OOK) symbol of the LP-WUS is determined based on (i) a length N_ofdm of an orthogonal frequency division multiplexing (OFDM) symbol, (ii) a length N_cp of a cyclic prefix (CP) duration of the OFDM symbol, and (iii) a number N of OOK symbols corresponding to the length of the OFDM symbol.

The present disclosure relates to the field of communication technology, in particular to an information sending method and device, a terminal, a network device and a storage medium. The information sending method comprises: sending indication information to a network device, wherein the indication information is used to indicate the receiving capability of the terminal for a low-power wake-up signal. According to the present disclosure, the terminal sends the indication information to the network device, and the network device can determine the receiving capability of the terminal for the low-power wake-up signal according to the indication information. Accordingly, the network device can reasonably allocate the low-power wake-up signal to the terminal, so as to avoid technical problems such as resource waste.

The invention discloses a GaN power electronic device capable of realizing CMOS (complementary metal oxide semiconductor) monolithic integration. The device comprises a substrate, an AlN buffer layer, a first i-GaN channel layer, a p-GaN buried layer, a second i-GaN channel layer, an AlN insertion layer, an AlGaN barrier layer and a p-GaN cap layer from bottom to top, the deep groove for device isolation extends into the AlN buffer layer; the p-GaN cap layer on the AlGaN barrier layer is partially removed, a source electrode and a drain electrode are transversely and sequentially arranged on the AlGaN barrier layer, and a gate electrode is arranged on the reserved p-GaN cap layer; a passivation layer covers the AlGaN barrier layer and the p-GaN cap layer, and interconnection metal is arranged on the source electrode, the drain electrode and the gate electrode, so that the GaN power electronic device with a p-GaN / AlGaN / AlN / i-GaN / p-GaN / i-GaN / AlN structure is formed. According to the invention, not only are the characteristics of high voltage resistance, low power consumption and excellent thermal conductivity and can be applied to high-voltage and high-power application scenarios, but also an enhanced p-channel GaN FET device can be developed based on the structure, a CMOS monolithic integrated phase inverter can be prepared, and monolithic integration of the GaN-based semiconductor device and a driving circuit thereof is realized.

This invention relates to a method and system for optimizing low-power screen projection control and communication protocols for motorcycles, relating to the field of motorcycle electronic devices. The method includes: collecting power status, riding status data, and motorcycle navigation information; when the screen projection mode is low-power projection mode, creating a virtual display layer on the mobile phone, turning off the phone's physical screen, and controlling the navigation application to continuously render the projected image to the virtual display layer; predicting future stability levels based on motorcycle navigation information and riding status data; when the future stability level is expected to deteriorate, determining key navigation node data based on the motorcycle navigation information; generating a simplified navigation instruction set based on the key navigation node data, and pre-pushing it to the motorcycle instrument panel for local caching via a second wireless communication channel, while simultaneously transmitting the projected data stream output from the virtual display layer to the motorcycle instrument panel for display via a first wireless communication channel. This invention effectively reduces the power consumption of mobile phone screen projection.

The utility model discloses a kind of wireless low-power intelligent water meter circuit board, specifically related to water gauge technical field, including mould box, the inside of mould box is provided with water meter circuit board, the front of water meter circuit board is provided with MCU chip and wireless communication module, positioning ring is provided on mould box, potting separation component is provided on positioning ring, organic silicon resin potting adhesive is provided on potting separation component, and organic silicon resin potting adhesive is located at the front of water meter circuit board;The outer surface of mould box is fixedly connected with fixed lug;Wireless communication module uses NB-IoT communication module, the input end of MCU chip is electrically connected with the output end of intelligent water meter, and the output end of MCU chip is electrically connected with the input end of NB-IoT communication module;Positioning groove is set up at the top of mould box, positioning ring is located in positioning groove, and sink hole is set up on positioning ring;The utility model solves the technical problem that the potting mode of water meter circuit board leads to increased repair difficulty and material damage rate.

The present application relates to the technical field of optical coupling, and particularly relates to a constant current optical coupling isolation circuit based on a depletion mode MOSFET; through the cooperation of a reverse protection module, a self-bias constant current module and a response enhancement module, super-wide voltage input, low power consumption and high-speed dynamic response are realized in the circuit, to a certain extent, the inherent technical contradiction that the traditional resistance current limiting scheme cannot simultaneously consider reliable conduction and low power consumption under wide voltage, and the slow response of high CTR optical coupling is solved, the structure is extremely simple and the reliability is high, a self-bias constant current source based on a depletion mode MOSFET is adopted, only one resistor is needed to realize relatively accurate constant current output in a super-wide input range of 9.6V to 400V, replacing the current limiting resistor with huge power consumption under high voltage or the active constant current source with complex circuit in the traditional scheme, and the power consumption under high voltage application is reduced; the technical problem that the existing resistance current limiting scheme is limited in widening the input voltage range of the optical coupling is solved.

This utility model relates to an ultra-low power, high-intensity directional acoustic warning device, including a front panel, a housing, a warning light, a sound-generating module, and a circuit board assembly. The circuit board assembly includes a power management module, a central management module, an audio algorithm processing unit, and a boost drive module. The power management module supplies power to the strobe light and the piezoelectric sound-generating unit. The central management module connects to the audio algorithm processing unit, the boost drive module, and the strobe light. The audio algorithm processing unit is connected to the boost drive module, which is also connected to the piezoelectric sound-generating unit. The central management module controls the audio algorithm processing unit to process the input audio signal and then drives the piezoelectric sound-generating unit to emit sound through the boost drive module. This utility model overcomes the high power consumption bottleneck of traditional electromagnetic loudspeakers and integrates the collaborative work of the strobe light and the piezoelectric sound source, enhancing target recognition through multi-dimensional warnings.

This disclosure relates to the field of power electronics technology, and in particular to a control method for a multi-port converter, a multi-port converter, and a power system. A first power circuit and a second power circuit can be configured in the multi-port converter. When the first power provided by a first power source connected to the first port is greater than or equal to the second power of the load connected to the second port, the second power circuit connected to the third port is controlled to operate while the first power circuit connected to the third port is controlled to stop operating, or the second power circuit connected to the third port is controlled to stop while the first power circuit connected to the third port is controlled to operate. This means that only a portion of the power circuit operates, thus saving power consumption from the non-operating power circuits. Furthermore, the operating power circuits can stabilize the voltage of the capacitor cells, thereby reducing power consumption while maintaining the voltage of the capacitor cells.

The application belongs to the field of electric power, and particularly relates to a micro-power wireless communication system and method applied to a power distribution network. The system comprises a multi-mode radio frequency processor circuit, a radio frequency power amplification circuit, a radio frequency matching circuit, a power management circuit, a mode management module and an antenna end. The multi-mode radio frequency processor circuit, the radio frequency power amplification circuit and the radio frequency matching circuit are sequentially connected. The multi-mode radio frequency processor circuit is further connected with the power management circuit and the mode management module respectively. The other end of the radio frequency matching circuit is connected with the antenna end. The wireless sensing can be widely applied in the field of power grid under the condition of low power consumption.

This invention discloses a negative voltage generation circuit, PCB board, and controller, including a first N-type power transistor MDN1, a charging unit, a negative voltage output switching unit, a substrate modulation unit, and a timing control unit. The source of the first N-type power transistor MDN1 is grounded, and the drain of the first N-type power transistor MDN1 is connected to the output terminal of the charging unit and the input terminal of the negative voltage output switching unit. The gate and substrate of the first N-type power transistor MDN1 are respectively connected to the substrate modulation unit. The timing control unit is connected to the charging unit, the negative voltage output switching unit, and the substrate modulation unit. The substrate modulation unit is used to track and modulate the gate potential and substrate potential of the first N-type power transistor MDN1 to eliminate the potential difference between the gate potential and the substrate potential. By eliminating the back gate effect of the NMOS power transistor through bootstrap substrate modulation, the negative voltage conversion efficiency of the charge pump is greatly improved, which is suitable for low-power, high-performance, and high-efficiency negative voltage output scenarios.

Hand-held work device with a tool (5) driven by a drive shaft (4) in a rotating manner, wherein the drive shaft (4) is driven by an electric drive motor (2), - wherein the drive motor (2) is provided with a control unit (20), characterized in that - that the control unit (20) is assigned at least one first operating curve (I) as power (P) versus rotational speed (n) and a second operating curve (II) as power (P) versus rotational speed (n), - wherein the control unit (20) operates the electric drive motor (2) in idle mode according to the first operating curve (I) and in load mode according to the second operating curve (II), - and the first operating curve (I) covers a low power range at low speed and the second operating curve (II) covers a large power range at high speed, - wherein the drive motor (2) is powered from a battery (12), and the drive motor (2) is switched to a low power consumption operating curve (I) outside the operating range, - wherein the battery (12) is arranged in the housing of the working device, - whereby switching to the second operating curve (II) allows for higher power consumption and higher speed, - where the switching between the operating curves (I, II) exhibits a hysteresis, - wherein during operation of the drive motor (2) the power consumption (P) and the speed (n) of the drive motor (2) are monitored by the control unit (20) and the switching between the operating curves (I, II) takes place depending on its output signal, • where the operating parameters are evaluated by comparison with the data of an operating curve and the switching between the operating curves (I, II) takes place depending on a comparison of the output signal with a threshold value and - wherein if a first threshold is undershot, a switch is made to one operating curve (II) and if a second threshold is exceeded, a switch is made to the other operating curve (I).

This application discloses a method for controlling a drone gimbal, a drone, and related devices. The method includes: acquiring sensing data, mission command data, and gimbal status data of the drone; determining mission status information of the drone based on the sensing data and mission command data; determining environmental condition information of the drone based on the sensing data and gimbal status data; and determining the power consumption mode corresponding to the gimbal on the drone based on the mission status information and environmental condition information. The power consumption mode includes a normal mode, a low-power mode, and a power-off mode, with power consumption decreasing sequentially. Through the above methods, this application can improve the control accuracy of the drone gimbal and enhance the drone's endurance.

This application relates to the field of analog integrated circuit technology and discloses a voltage reference circuit suitable for high power supply voltages. The circuit replaces the Zener diode pre-regulation architecture with a voltage-limiting loop biased by a positive temperature coefficient current source. A stable low power supply voltage is generated by forming a negative feedback loop through a high-voltage regulating transistor and a feedback sampling transistor. A reference voltage is generated by subtracting the gate-source voltages of two sets of transistors with different threshold voltages. Furthermore, it incorporates a frequency-band coordinated power supply rejection ratio enhancement module, a pre-charging and automatic loop exit startup acceleration module, and a dual-branch complementary control trimming module. This circuit achieves a comprehensive performance of small area, low power consumption, high power supply rejection ratio, and fast startup.

Disclosed is a method of operating a storage controller which includes a volatile memory device. The method includes determining whether a low-power mode is available, based on validity bitmap information indicating invalidity of first data stored in a first memory region of a first sub-block of the volatile memory device and validity of second data stored in a second memory region of a second sub-block of the volatile memory device, overwriting the second data to the first memory region based on the validity bitmap information, in response to determining that the low-power mode is available, storing first mapping information including a fixed index value corresponding to the first memory region and a migration index value corresponding to the overwritten second data in a metadata table, and performing a partial refresh operation corresponding to the first sub-block after overwriting the second data.

This invention relates to a dual-mode polycaprolactone (PCL) building energy-saving film and its preparation method. The dual-mode PCL building energy-saving film of this invention uses a temperature-sensitive PCL and hydrogel composite layer as the outer layer, and adds VO2-based materials. It can automatically reflect near-infrared light during high summer temperatures and automatically project sunlight during low winter temperatures; it requires no external power supply and is purely passively regulated. Furthermore, a PCL-based triboelectric nanogenerator array serves as the middle layer, which can collect mechanical energy from the building surface environment to power low-power sensors within the building, and can also connect surplus energy to the grid or store it. The transparent PCL and nanocellulose composite layer provides better mechanical support and is easy to install.

The embodiment of the application discloses a battery power consumption equalization control method and related device, the method is applied to the mainboard in the battery management system, the battery management system comprises: a mainboard, and a plurality of slave boards connected with the mainboard respectively, and the slave board is connected with a plurality of batteries;The method comprises: obtaining the running state parameter of the battery system;According to the running state parameter, the charging and discharging state of the battery system is determined;According to the charging and discharging state and the running state parameter, whether the battery system satisfies the equalization control condition is judged;If the equalization control condition is satisfied, the region where the target battery is located is determined;Through the slave board of the region where the target battery is located, the equalization control operation is executed on the target battery, so as to balance the pressure difference of the region where the target battery is located. In this way, the equalization effect of the battery system is effectively guaranteed, the low-power consumption operation of the equalization function is realized, the hardware loss of the battery management system is reduced, and the service life of the battery system is prolonged.

Various systems and methods are presented regarding synchronizing data transmission between various remote clients and respective local devices. By synchronizing data transmission from the remote clients with data receipt at respective local devices, operation of the local devices can be constrained to specific periods of time. A local device can be woken from a low power mode for a short period of time, cache data, and return to low power mode. By limiting the duration of operation for the local device to receive the data, the local device can quickly return to a low power mode upon data receipt. By synchronizing data transmission from the remote clients to the local device, the duration that the local device has to be awake can be reduced. With transmission synchronization, the local device can be placed into low power mode for longer periods compared to extended operation required receive randomly transmitted data.

The invention provides an elevator monitoring device and an elevator monitoring system. The problem that a low-power-consumption communication standard with small communication capacity cannot be adopted between a monitoring unit and a relay device when it is assumed that the data volume per unit time is increased when a passenger car is running and sensor data changes at any time in a short time is solved. An elevator monitoring device is provided with: a sensor management device for reading a sensor value from a sensor provided in a passenger car of an elevator; the communication function device is capable of wirelessly communicating with the sensor management device, and the sensor management device is provided with: a data analysis unit that analyzes the sensor values and generates analysis data; a state determination part which determines the state of the passenger car according to the analysis data and generates state determination data; and a wireless transmission unit that wirelessly transmits the state determination data by means of a first communication method, the communication function device being provided with: a wireless reception unit that receives the state determination data transmitted from the wireless transmission unit; and a network transmission unit that transmits the state determination data by means of the second communication method.

The application discloses a low-power-consumption LIN bus receiving circuit, which comprises a first current mirror composed of two high-voltage PLDMOS tubes, two high-voltage NLDMOS tubes, the sources of the two high-voltage PLDMOS tubes are connected with a power supply VBAT respectively, the drain of one high-voltage PLDMOS tube is connected with a LIN bus, the drain of the other high-voltage PLDMOS tube is connected with a node Vc, and the node Vc is grounded, the gates of the two high-voltage NLDMOS tubes are connected with the node Vc in series, the drain of one high-voltage NLDMOS tube is connected with the power supply VBAT, the source is grounded and connected with one input end of a comparator, the drain of the other high-voltage NLDMOS tube is connected between the LIN bus and the drain of one high-voltage PLDMOS tube, the source is grounded and connected with the other input end of the comparator. The application can completely close the path from the LIN bus to the ground when the LIN bus is in a recessive state, so that the static power consumption is zero, and the problem that the overall power consumption of a chip is high due to a leakage current in a traditional scheme is solved.

The application discloses a low-power-consumption common-gain adjustable metasurface based on nonlinear negative resistance, which comprises a low-power-consumption metasurface unit and a backscattering amplifier connected in series with the low-power-consumption metasurface unit; the low-power-consumption metasurface unit comprises, from top to bottom, an upper copper sheet, an upper dielectric, a metal ground, a lower dielectric and a bottom RLC switching circuit layer; wherein the upper copper sheet is connected with the bottom RLC switching circuit through a through hole; the bottom RLC switching circuit layer comprises a plurality of radio frequency switches and LC circuits or resistors embedded between the radio frequency switches; the backscattering amplifier comprises a matching circuit, the matching circuit is connected with an amplifying circuit through a direct-current isolation part, and the amplifying circuit is connected with a bias circuit through a cross isolation part. After an electromagnetic signal is input into the amplifying circuit through the bottom RLC switching circuit, the LC circuit or the resistor is selected through the radio frequency switch, the electromagnetic signal is amplified, and then the electromagnetic signal is reflected, the LC circuit or the resistor is selected through the radio frequency switch, the electromagnetic signal is transmitted to the upper copper sheet, and then the electromagnetic signal is radiated to the free space.