55results about How to "Delay the time of being blocked" patented technology

The invention belongs to the field of power converter control and relates to a model prediction control method of a voltage source type rectifier when a network voltage is unbalanced. The model prediction control method of the voltage source type rectifier when the network voltage is unbalanced comprises the steps of converting three-phase network voltage and a three-phase current into network voltage and a current which are under a two-phase static coordinate system through an abc / alpha beta coordinate, obtaining network positive sequence voltage and negative sequence voltage by carrying positive and negative sequence component separation of the network voltage under the two-phase static coordinate system, calculating reference values of active power, calculating current reference values of the rectifier under the two-phase static coordinate system, and carrying out model prediction current control and selecting an optimal on-off state. The model prediction control method of the voltage source type rectifier when the network voltage is unbalanced is capable of quickly and precisely tracing the current under the two-phase static coordinate and effectively eliminating fluctuation of direct current side voltage at the same time, power quality of the system is improved, a reliable network-connected operation of the rectifier when transient state network voltage is unbalance is achieved, and dynamics and stability of the whole system are improved.

The invention relates to a cloud system structure pre-warning system and method for riverway type reservoir tributary bay water bloom. The cloud system structure pre-warning system comprises a monitoring cloud module, an information cloud module, an application supporting module, a water bloom pre-warning module and a discussion decision-making module. The monitoring cloud module is composed of a field information collecting unit and an operation communication unit, storage media of the information cloud module are composed of movable distributed storage station nets combined fixedly, the application supporting module is composed of a basic supporting unit, an application customization unit, a data cooperation unit and an emergency response module, the water bloom pre-warning module is composed of a risk analysis unit and a pre-warning and forecasting unit, and the discussion decision-making module is used for achieving decision-making discussion and information sharing communication in a cloud environment. The cloud system structure pre-warning system and method for riverway type reservoir tributary bay water bloom achieve seamless linkage and operation control over the modules based on a cloud system structure, carry out all-weather monitoring, cloud storage and water bloom risk pre-warning on the inducing factors of the riverway type reservoir tributary bay water bloom and water bloom biochemical properties, and provide a new measure based on the cloud system structure for preventing and reducing water bloom events.

A method for effectively implementing real time multimedia data transmission in an Ethernet network that operates in a CSMA/CD (Carrier Sense Multiple Access/Collision Detect) scheme. Real time data gets priority over general data, and uses an MPCP (Multi-Point Control Protocol) of the IEEE 802.3ah EPON to prevent a collision from occurring in real time data transmission, and also prevents delay time variation. An RT-IFG (Real Time Inter-Frame Gap) is defined for real time data, shorter than an IFG, to give priority to the real time data over general Ethernet data. The MPCP is used for transmission of real time data without collision between the real time data.

The invention discloses a cell information detection and cell coverage calibration method for a mobile network, belongs to the field of mobile communication, and solves the problems that how to accurately acquire the cell key parameters of the mobile network and thereby to establish a base station information list, and how to accurately measure and calibrate the actual coverage range of each cell. According to the method, the user online information of the mobile network collected by a user terminal is used, and via the big data analysis means, the cell key parameters (cell identifiers, station location longitudes and latitudes, direction angles, station types, etc.) are determined, and the base station information list is established; and based on a large number of sampling data of the user online information collected by the terminal, the coverage boundary of each cell is accurately calibrated, and the cell coverage map of the whole network is established. According to the method, the cell key parameters of the mobile network can be accurately acquired, and thereby the base station information list can be established, the time delay and manual errors caused by maintaining the base station information list in a traditional manual collecting and step-by-step reporting manner can be effectively avoided, and the actual coverage range of the network can be accurately evaluated.

The invention relates to a vehicle throttle anti-misstep brake device. The device comprises a brake pedal, a throttle pedal and a centrifugal clutch; the centrifugal clutch comprises an inner ring and an outer ring, two movable claws are arranged on the inner ring, the movable claws can rotate around pivots, fixed on the inner ring, of the movable claws; the tail end of each movable claw is provided with a limit stop, the middle part of each movable claw is connected with one end of a tensioning spring; and the other end of the tensioning spring is fixed on the inner ring; tooth sockets matched with the claw tips of the movable claws are arranged on the outer ring; the throttle pedal is connected with the inner ring through a first connecting rod; and a throttle pull wire is wound on the inner ring; the brake pedal is connected with the outer ring through a second connecting rod; and the outer ring is connected with a brake cylinder trough a brake pull wire. The vehicle throttle anti-misstep brake device can be used for preventing a driver from stepping the throttle mistakenly when braking and further causing accidents.

The invention is a television rapid method for exchanging channel. In accordance with different time settings trigger multiple keys, the process of user identification keys manner, and showing channel number, and the process of exchanging channel are included by the whole control process for exchanging channel. System tests different key-press methods, and take corresponding adjustment until adjust the channel number that the user need to watch channels, then exchange channel. The method uses multiple channels of buttons to control the adjustment, gets the choice of channels rapidly without switching channels, and avoids the channel time delay problems and slow conversion for frequently switching the channel. Many kinds of pressed keys ways also may use channel number change of the pressed key of jumping-like to realize split-second selection of channel number, so save the time and the pressed key triggers times, also reduce the remote control attrition.

A DLL circuit is designed to adjust the delay time and the duty applied to an input clock signal, thus producing a DLL clock signal. In a non-clocking state of the DLL clock signal in which pulses disappear temporarily, the DLL circuit stops updating the delay time and the duty of the DLL clock signal. That is, the DLL circuit is capable of preventing a phase difference between the input clock signal and the DLL clock signal from being erroneously detected in the non-clocking state of the DLL clock signal, thus preventing the delay time and the duty from being updated based on the erroneously detected phase difference. Thus, it is possible to reduce the number of cycles adapted to the delay-locked control and to thereby stabilize the operation of the DLL circuit.

The present invention is a wireless cell information detection method based on semi-supervised clustering, which aims to solving the problem of how to acquire the key parameters of the base stations and cells of a mobile network timely and accurately as well as the operating status of the base stations so as to construct and update the base station information table and to make the operators better grasp the deployment and operation of base stations in the network for effective management. The method comprises: inputting the on-net information sampling data acquired by the users' mobile terminals; Step S1: terminal data cleaning; Step S2: station type determining; Step S3: initial positioning of the cell sites using the vector clustering algorithm; Step S4: cell site address aggregating in the same base station; Step S5: cell angles and direction angles determining using a soft-interval SVM support vector machine; and Step S6: adding fields such as cell states and change dates when updating the base station information table used to indicate which cells have been changed at what time (newly built, removed, relocated, parameter updated, etc.).

A method, an apparatus, and a computer program are provided for the separate handling of read and write operations of Read-Modify-Write Commands in an XDR™ memory system. This invention allows the system to issue other commands between the reads and writes of a RMW. This insures that the dataflow time from read to write is not a penalty. A RMW buffer is used to store the read data and a write buffer is used to store the write data. A MUX is used to merge the read data and the write data, and transmit the merged data to the target DRAM via the XIO. The RMW buffer can also be used for scrubbing commands.

The invention discloses a non-paper number-fetching display system and a non-paper number-fetching method. The non-paper number-fetching display system comprises a number fetching unit. The number fetching unit comprises an input module, a processing module and a display module. The input module is used for providing identifying information input by a user. The processing module connected with the input module is used for receiving the identifying information, generating service numbers and aligning the service numbers in one of a plurality of number calling sequences. The display module connected with the processing module is used for displaying the service numbers and the service information.

Provided is a system for generating an interpolated frame, which includes an image decoding module configured to decode a first frame from an original image information, the first frame being divided into unit images, and an interpolated frame generating module configured to extract a motion information of each of the unit images between the first frame and the second frame, the motion information being written in a second frame of the original image information, and generate the interpolated frame that is to be inserted between the first frame and the second frame by using the first frame and the motion information of each of the unit images.

A delay time calculation apparatus enabling all the speaker units of a delay array type speaker array to contribute to formation of a combined wavefront. Sound receiving points for acoustic waves output from the speaker units are set within a target area for the acoustic waves. For each speaker unit, an average value of differences between distances between the sound receiving points for the speaker units and other speaker units and distances between the sound receiving points for the speaker units and the speaker units is determined, and an average value of differences between distances from the other speaker units to sound receiving points for the other speaker units and distances from the speaker units to the sound receiving points for the other speaker units is determined. An average of the average values is converted into a delay time, thereby determining the delay time for each speaker unit.

One or more combinational circuits are connected to one or more flip-flop circuits. One or more clock buffers supply a clock to the flip-flop circuit. A control circuit controls a delay time of the flip-flop circuit and the combinational circuit independently each other.

An electronic apparatus for supporting wireless peer to peer (P2P) communication with an external apparatus is provided, that includes a communicator configured to transmit and receive a signal for performing discovery and group formation, and a controller configured to transmit a first preferred channel list including a channel number indicating at least one channel pre-established among a plurality of channels available as an operating channel, to the external apparatus, to select one channel number from at least one channel number included in a second preferred channel list and the channel number included in the first preferred channel list in response to the second preferred channel list being received from the external apparatus as an operating channel with the external apparatus.

The invention discloses an extensible offline UPS power supply, which comprises a power supply body, wherein a primary power supply is arranged inside the power supply body, an extension power supplyis arranged at the bottom part of the primary power supply, a primary input electric wire and a primary output electric wire are arranged on the rear side of the primary power supply, the rear side ofthe extension power supply is provided with a secondary input electric wire and a secondary output electric wire, a single chip microcomputer is arranged on the top part of the primary power supply,an input end of the single chip microcomputer is provided with a coulombmeter and a circuit acquisition unit, an output end of the single chip microcomputer is provided with an alarm unit and a circuit control module, and a connecting end of the single chip microcomputer is provided with a data processing module and an information acquisition module. The information acquisition module logs into aState Grid platform via a network and acquires a power outage notification from the State Grid platform, the circuit control module controls the primary power source and the extension power supply tosupply power to loads in power outage timely, so as to avoid the delay time of switching power-on circuits, the single chip microcomputer further transmits information to the alarm unit, and the alarmunit can transmit alarm information to a mobile phone and a computer, so that the staff can back up quickly.

The invention discloses a sensorless control method for a high-speed permanent magnet synchronous motor. The method can improve the dynamic performance of the high-speed permanent magnet synchronous motor in a static or low-speed region while reducing the noise generated by a conventional high-frequency injection method. And stable operation of the motor in dynamic operation processes of sudden loading, load shedding and the like can be ensured.

The invention discloses a device and a method for measuring thermal resistance of a nucleating layer of a gallium nitride device based on picosecond laser. The device mainly comprises a heating and power measurement subsystem, a transient thermal response measurement subsystem, and a measurement guarantee subsystem, wherein the heating and power measurement subsystem comprises a picosecond laser heating module, an electrical heating module, and an electrical temperature detection module. The method adopts a structure function method to calculate the layered thermal resistance. The method comprises a picosecond laser heating step and an electrical heating step, wherein picosecond laser is used for heating a semiconductor device thin layer at first, then, an electrical acquisition mode is adopted for temperature measurement, and electrical heating and electrical detection modes are adopted for determining equivalent electrical heating power of laser heating. The problem that the thermal resistance of the nucleating layer of a gallium nitride HEMT device cannot be tested under the micrometer scale in the prior art is solved. A voltage and temperature calibration curve interpolation calculation mode is adopted, and the influence of parameter nonlinearity is avoided.