35results about How to "Realize the synchronization function" patented technology

The invention provides a test platform and method for synchronous control over multiple mechanical arms, and belongs to the technical field of synchronous control simulation. The test platform is characterized by comprising simulation control units and execution units. The simulation control units include an upper computer, a DSPACE platform and an ARM platform, wherein the upper computer, the DSPACE platform and the ARM platform are connected in sequence, and the ARM platform is connected with one or more distributed synchronous controllers and the upper computer at the same time. The execution units are mechanical arm execution units which correspond to the synchronous controllers and are connected with the ARM platform. The test method comprises the following steps of modeling the mechanical arms, simulating a kinetic model of the mechanical arms, converting and issuing a synchronous control code, dispatching the ARM platform, executing the synchronous controllers, moving the mechanical arms, and finishing a simulation test. The test platform and method for synchronous control over the multiple mechanical arms have the advantages of being high in universality and openness and capable of providing a testing environment for most nonlinear complex network control algorithms.

The invention discloses a real-time synchronizing method for file cloud storage. The synchronizing method includes the following steps: (1) building a synchronous folder at the client, monitoring change in the synchronous folder, enabling the server to send out a request to the client and synchronizing new files being not synchronized in the synchronous folder to the server; (2) utilizing a client database to record change information in the synchronous folder; (3) enabling a server database to record information of the files synchronized from the client to the server and (4) judging whether files at the server and synchronized into the synchronous folder at the client or files in the synchronous folder at the client are synchronized with the server or not by comparing change information in the synchronous folder and recorded by the client database and information of the files synchronized from the client to the server and recorded by the server database. The method ensures automatic synchronization of files / documents of users at a plurality of computers.

The invention belongs to the technical field of medical instruments and particularly relates to a multifunctional handheld electric massager. In order to solve the problem that an existing massager with single functionality is inconvenient to operate, the multifunctional handheld electric massager provided herein comprises a handle; the bottom end of the handle is connected with an adjusting stud,the middle of the adjusting stud is sleeved with a top plate, a displacement positioning device is connected to the top of the top plate, the lower end of the adjusting stud is in threaded connectionwith an adjusting nut positioned below the top plate, two sides of the bottom of the top plate are provided with two slide grooves in symmetric distribution, sliders are slidably connected in the twoslide grooves respectively, a bearing support plate is connected to the bottoms of the sliders, and a positioning spindle that is vertically arranged is rotationally connected to the sliders and thebearing support plate. The multifunctional handheld electric massager has multiple functions, provides synchronization of massaging for surface skin and percussive stimulation for deep muscles, can provide multi-face multi-point simultaneous therapy, is convenient for a patient to operate, and can well meet the massaging needs of different parts of bodies different in form.

The invention discloses a bias guiding mechanism of a static pointing type rotary steering well drilling tool and a control method, and belongs to the technical field of petroleum and natural gas welldrilling. The bias guiding mechanism of the static pointing type rotary steering well drilling tool comprises a drill bit connecting shaft and a non-rotary outer cylinder, and further comprises a flexible hose, bias mechanisms and a sliding block connecting piece; the flexible hose is connected with the drill bit connecting shaft, and the bias mechanisms are installed in the non-rotary outer cylinder; the bias mechanisms comprise center adjusting sliding blocks, spiral telescopic mechanisms and control motors; the sliding block connecting piece is arranged on the outer part of the drill bit connecting shaft in a sleeving mode; and the center adjusting sliding blocks are connected with the control motors through the spiral telescopic mechanisms and are installed in the sliding block connecting piece, the center adjusting sliding blocks are driven by the control motors to move forward and backward to push the drill bit connecting shaft, and control over structure bend angles and tool face angles is realized. The disturbance and the load applied on the motors are both small and stable in the process of making a connection, the electric energy requirement of a system is reduced obviously, and the service life of the guiding tool is prolonged; and the scheme is simple and easy to operate, and the structure is compact.

The invention relates to special equipment for winching up buoy anchor chains of a medium-sized buoy tender, in particular to a horizontal automatic-chain-arrangement hydraulic drum winch. The horizontal automatic-chain-arrangement hydraulic drum winch comprises a drum component, a turntable component, a bracket component, a speed reducer component, a hydraulic component and a control component, wherein the drum component consists of a drum, a ratchet wheel, a rack wheel, a gear cover and a rotating shaft, the turntable component consists of an idler wheel, a swing arm, a swing arm bracket and a chain arrangement oil cylinder, the bracket component consists of a bracket, guard bars and a pawl, the speed reducer component consists of a hydraulic motor, a speed reducer and a pinion, and the control component consists of a PLC (Programmable Logic Controller), an optoelectronic switch, a displacement sensor, a power distribution cabinet, an equipment control cabinet, and a deck operation cabinet. The horizontal automatic-chain-arrangement hydraulic drum winch can be applied to a medium-sized buoy tender and can be used for winching up multiple sections of buoy anchor chains at one time and the function of synchronizing the drum and the chain arrangement oil cylinder is achieved.

The invention discloses a visible light communication system and a synchronous detection method thereof. The provided visible light communication system comprises a sending end and a receiving end; the sending end comprises a framing module, a sending module and a simulated sending front end; the framing module is coupled with the sending module; the sending module is coupled with the simulated sending front end; the framing module is used for framing the received transmission data to form data with fixed frame length; each frame comprises a frame synchronization code, a data frame control word, a valid data length, valid data, filling data and frame check code field. In the visible light communication system, as the received transmission data are framed by the sending end to form the data with the fixed frame length, each frame of the data can be identified correctly by the receiving end, the synchronization function for data frame sending and receiving is realized, the synchronism of the visible light communication can be accordingly kept in a better manner, and the efficiency of the visible light communication can be improved.

The invention provides a system scheduling information transmission method, which comprises the following steps of: performing transmission preprocessing on system scheduling information to obtain system information blocks suitable for channel transmission; calculating a repetition period for the transmission of the system scheduling information after a plurality of idle timeslots are set in a broadcast channel according to the number of the system information blocks, wherein the system scheduling information is not transmitted in the idle timeslots; and filling the system information blocks into the broadcast channel for transmission according to the repetition period, and communicating with other base stations by utilizing the idle timeslots. The invention also provides a system scheduling information transmission device and a base station system. By the technology, the data communication of a base station with the other base stations also can be realized in a system scheduling information transmission process, so that the complexity of a processing process for realizing a system function is lowered, the utilization rates of resources are increased, the processing capability of the base station is improved, and the construction cost of the base station is reduced.

The invention discloses a sampling value transmission system and a transmission method applied to wide-area protection. The system is composed of a combination unit, a substation-area protection control device, a wide-area protection control device and other devices in a matched mode. Substation-area protection serves as a substation end service unit for sampling value transmission, substation-area protection achieves receiving, screening and point processing internally of transformer substation data and meanwhile receives a synchronization command of wide-area protection, serial numbers of samples are marked through time of wide-area protection, and the serial numbers are sent to a wide-area protection device through an interstation communication network. Wide-area protection carries out alignment processing according to time serial numbers of sampling value messages, the data synchronization function of different substations and at different intervals is achieved, and the problems that flow of sampling values of wide-area protection is large and synchronization is not easy to achieve are solved.

The invention relates to the technical field of wireless mobile communication and particularly relates to a 5G mobile communication indoor micro-distribution system and a 5G mobile communication indoor micro-distribution method. The system comprises a receiving antenna, a forwarding antenna and a signal processing unit, wherein the receiving antenna is in wireless signal connection with the 5G base station, the access frequency and the transmitting frequency of the receiving antenna are the same as the frequency of the 5G base station, the antenna is used for receiving downlink signals of a 5Gbase station and transmitting uplink signals of a terminal, the forwarding antenna is in wireless signal connection with the terminal, the access frequency and the transmitting frequency of the forwarding antenna are the same as the frequency of the 5G base station, the forwarding antenna is used for receiving uplink signals of the terminal and transmitting downlink signals of the 5G base station, and the signal processing unit is used for being in signal connection with the receiving antenna and the forwarding antenna and processing the signals. The system is advantaged in that a problem that the existing 5G signal coverage is low is solved.

The invention discloses a synchronization system and a vehicle with the synchronization system. The synchronization system comprises a transmission shaft, a shifting gear, asynchronous hub, a gear sleeve, a synchronous sliding block, a locking and stopping block and asynchronous ring, wherein the shifting gear is arranged on the transmission shaft in a sleeving manner; the synchronous hub is arranged on the transmission shaft in a sleeving manner; the gear sleeve is arranged on the synchronous hub in a sleeving mode and can move between a neutral gear position and an in-gear position; the synchronous sliding block is arranged on the synchronous hub; the locking and stopping block is arranged on the synchronous hub, and when the gear sleeve is located at the in-gear position, the gear sleeve is stopped by the locking and stopping block so as to stop the gear sleeve from moving to the neutral position; the synchronous ring is arranged in a sleeving manner; when the gear sleeve is locatedat the neutral position, the gear sleeve is meshed with the synchronous hub and is separated from the shifting gear; when the gear sleeve moves from the neutral position to the in-gear position, thegear sleeve pushes the synchronous ring to make contact with the shifting gear through the synchronous sliding block; and when the gear sleeve is located at the in-gear position, the gear sleeve is meshed with the synchronous hub, the synchronous ring and the shifting gear. According to the synchronization system disclosed by the embodiment of the invention, the functions of synchronization, gearlocking and centering can be achieved, and the structure is compact.

The invention relates to a synchronous self-contained hydrophone underwater acoustic signal acquisition system and a working method. The system comprises an electromagnetic induction coupling module,a self-contained hydrophone, an electromagnetic induction synchronous cable and a seawater contact terminal, the electromagnetic induction coupling module comprises a wet end and a dry end, the wet end is located outside a watertight cabin of the self-contained hydrophone and comprises a magnetic ring capable of being opened and closed, and an induction coil is wound around the magnetic ring. Thedry end is located in the self-contained hydrophone and comprises a modulation and demodulation module, a clock module and a reference frequency generation module. The dry end and the wet end are connected through a watertight cable; the electromagnetic induction synchronous cable sequentially penetrates through the magnetic rings in the wet ends, and the two ends of the electromagnetic inductionsynchronous cable are connected with the seawater contact terminals to form a loop. The system utilizes the electromagnetic induction coupling synchronization module, the electromagnetic induction synchronization cable and the seawater contact terminal to realize synchronous acquisition between the self-contained hydrophones.

The invention provides a composite power synchronous control system and method for a voltage source converter, and the method comprises the steps: enabling a DC voltage source Vdc to output a voltage u through the converter, enabling the DC voltage source Vdc to be connected with an AC power supply e through a filter Lf, and measuring a common coupling point voltage v and a line current i at a connection point of the Lf and the e; calculating actual active power p and reactive power q; based on the power p, the power q, the preset work power pref and the preset reactive power qref, calculating a reference angle theta required by Park transformation or Park inverse transformation coordinate transformation; transforming the voltage v and the current i from a three-phase static coordinate system to a two-phase rotating coordinate system according to the reference angle theta to obtain transformed vd and vq and transformed id and iq; calculating a current reference value according to vd and vq; calculating a reference voltage required by PWM modulation according to id, iq and a current reference value; and converting the reference voltage from a two-phase rotating coordinate system to a three-phase static coordinate system according to the reference angle theta, and providing a control signal for the converter through a PWM link.

The invention discloses a transmitting end circuit based on a JESD204B protocol, which belongs to the technical field of high-speed data transmission and comprises a transmission layer, a scrambling module and a data link layer. The transmission layer comprises a data combination module and a mapping unit and is used for realizing mapping from original sampling data to channel data; the scramblingmodule is used for scrambling the data output by the transmission layer; and the data link layer comprises a synchronization module, a control character insertion module and a coding module, the synchronization module realizes a protocol synchronization process, the control character insertion module inserts control characters into a data stream according to a protocol rule, and the coding modulerealizes 8B / 10B coding.

The invention provides a visible light communication device and method. The device comprises an LED emission module and a visible light receiving module; the method comprises the following steps: selecting n LED reference points and numbering the reference points; loading periodic signals at different time slots in a driving circuit of the LED emission module, and modulating the emission signals,wherein the LED lamps are fully brightened as a frame head, and the LED lamps are fully darkened as the frame tail; receiving the LED light signal by using a photoelectric detector with an optical filter in the visible light module, and accomplishing photoelectric conversion, acquiring sampling signals through an amplifier and an analog-to-digital converter, and inputting the sampling signal intoa microprocessor; acquiring the maximum signal intensity value in the sampling signal as the frame head to represent the beginning of the effective data, and acquiring the minimum signal intensity value as the frame tail to represent the end of the effective data, thereby obtaining different data frames. Through the device and method provided by the invention, each frame of data can be quickly identified, the communication synchronization can be maintained, the communication efficiency is improved, and the method and device belong to the technical field of the communication.

The invention discloses a synchronization detection closing grid-connected method and equipment for a flexible low-frequency power transmission system. The method comprises the following steps: disconnecting all switches of a grid-connected converter station; switching on a power frequency network side switch and a power frequency valve side switch of the grid-connected converter station, and charging a capacitor in the converter; in response to the fact that the capacitor voltage of the converter is stable, unlocking the converter, and controlling the low-frequency side to reach the rated voltage; in response to the fact that the capacitor voltage mean value and the low-frequency side voltage of the converter reach rated values, if a low-frequency bus side voltage transformer detects no voltage, a low-frequency valve side switch and a low-frequency network side switch are directly switched on for grid connection; if the low-frequency bus side voltage transformer detects voltage, the low-frequency valve side switch is directly switched on, then the low-frequency network side switch is detected to be switched on synchronously for grid connection, or the low-frequency network side switch is directly switched on, then the low-frequency valve side switch is detected to be switched on synchronously for grid connection. According to the invention, the number of low-frequency voltage transformers is reduced, the cost and complexity of the system are reduced, and engineering application is promoted.

An intelligent medicine box with a medicine synchronizing function comprises a box body provided with a medicine bag outlet, a detecting device arranged on the box body opposite to the medicine bag outlet and used for detecting information carried by a medicine bag output through the medicine bag outlet, a medicine bag carrying device, a transportation mechanism, a driving motor, a guiding mechanism, a controller and an intelligent processor, wherein the medicine bag carrying device, the transportation mechanism, the driving motor and the guiding mechanism are contained in the box body, the controller is used for converting a detecting signal into a stop position identifying signal matched with the information carried by a medicine bag, and the intelligent processor is used for processing the stop position identifying signal and / or medicine taking demand information so as to synchronously update pre-discharged medicine information and the information of the medicine bag carried by the medicine bag carrying device and generate an operation command. The intelligent medicine box with the medicine synchronizing function can synchronously control medicine discharging and update relevant information of medicine based on the structure of the medicine box and user demands.

The invention discloses a multi-machine phase synchronization system and method based on optical fiber transmission, the system comprises a master device and a plurality of slave devices, an optical fiber transmitting interface of the master device is connected with an optical fiber receiving interface of one slave device, and the slave device connected with the master device is sequentially connected with other slave devices in series. The master device transmits the phase information of the digital reference source of the device as a system synchronization phase signal to the slave device connected with the master device, and the slave device uses the received system synchronization phase signal as the digital reference source phase of the device; the system synchronous phase signal is sent to the slave device connected with the slave device optical fiber emission interface through the optical fiber emission port, and when the last slave device is connected with the master device, the master device and the slave device form a closed-loop communication test. Synchronous phase code values are transmitted in real time in high-speed optical fiber communication, accuracy is high, phase changes can be tracked in real time, and good synchronization performance and expansibility are achieved in a multi-machine power system.

The invention discloses an equipment operation and maintenance command monitoring management system based on multi-dimensional data. The system comprises the steps of determining a monitoring management technology framework, establishing a monitoring management range, establishing an overall specification standard and the like. According to the invention, a multi-dimensional data equipment operation and maintenance monitoring platform is established; the operation and maintenance monitoring platform uses a plurality of architecture designs and the like; real-time monitoring and use under extreme conditions are facilitated; safety accidents are avoided, and an overall specification standard is established; the transmission safety performance and the real-time transmission efficiency of power grid picture video information are improved; meanwhile, the multi-dimensional data equipment operation and maintenance monitoring platform can perform multi-angle, multi-level and all-around onlinemonitoring, a processing condition tracking function is performed when a power grid has a fault point, the operation and maintenance quality is improved, decision management personnel can master the operation state of an enterprise in time, and powerful support is provided for decision analysis at the same time.

The present invention proposes a visible light communication device and method. The device includes an LED transmitting module and a visible light receiving module. The method includes: selecting n LED reference points and numbering them, and loading different The periodic signal of the same time slot modulates the transmission signal, the LED lights are all bright as the frame head, and the LED lights are all off as the frame tail; the photodetector with the optical filter in the visible light receiving module receives the LED light signal and completes the photoelectric Conversion, the sampled signal is obtained through the amplifier and the analog-to-digital converter and input to the microprocessor; the maximum value of the signal strength in the sampled signal is obtained as the beginning of the valid data as the frame header, and the minimum value of the signal strength is used as the end of the frame to represent the valid data. At the end, different data frames are obtained. The invention quickly identifies each frame of data, maintains communication synchronization and improves communication efficiency, and belongs to the technical field of communication.