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141results about How to "Realize synchronous transmission" patented technology
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Method for synchronously pushing audios and videos in video conference
ActiveCN103237191ARealize synchronous transmissionAchieve playbackTelevision conference systemsTwo-way working systemsComputer networkTime synchronization
The invention relates to the audio-video synchronization technology and discloses a method for synchronously pushing audios and videos in a video conference to realize true synchronous audio-video sharing. The method includes that sharing source equipment accesses a video conference terminal by means of a network, the video conference terminal initiates a sharing command to the sharing source equipment and an MCU (microprogrammed control unit), the sharing source equipment collects own audio-video data and pushes the data to the video conference terminal, and the video conference terminal sends audio-video data flow to the MCU which forwards the data flow to client terminals of participants; when the sharing source equipment collects the audios and videos, a time shaft is established and a time stamp is established for each collected data flow packet to guarantee time synchronization during playing; when the MCU forwards media stream data, a synchronous tracking thread is established to automatically track and synchronously update the media stream data; when the client terminals receive media stream for decoding playing, and synchronous playing is performed according to time shaft information. The method for synchronously pushing audios and videos in the video conference is suitable for synchronous sharing of audios and videos in a video conference system.
Owner:CHENGDU FACEMEETING VIDEO TECH
Beidou satellite monitoring safe driving system based on 3G network
InactiveCN102651173AImprove securitySubstantial market returnsRoad vehicles traffic controlVideo monitoringThird generation
The invention discloses a Beidou satellite monitoring safe driving system based on a 3G (third generation) network. The Beidou satellite monitoring safe driving system comprises a platform server positioned in a monitoring center and a monitoring terminal at a vehicle end, wherein the monitoring terminal is connected with the platform server through a network communication system; a monitoring platform, a database, SMS (short message service) and telephone service are operated on the platform server; and the monitoring terminal comprises a housing and a mechanism circuit arranged in the housing. According to the Beidou satellite monitoring safe driving system disclosed by the invention, under the concept of an inter-vehicle network, three major functions, namely positioning by a Beidou vehicle-mounted satellite, 3G wireless video monitoring and vehicle driving recording are firstly integrated, double-CPU (central processing unit) real-time processing, a DSP (digital signal processing) algorithm, an optimization transceiving queue scheduling algorithm, a double-code stream, a special file system, identity comparison identification and other technologies are integrated, video signals collected by a video camera are compressed, encoded and then converted to a compressed code stream, and real-time transmission is realized through the 3G network.
Owner:CHENGDU YIMENG HENGXIN TECH
Online monitoring and fault diagnosing system for crane
ActiveCN102730571ARealize online monitoringRealize the alarmSafety gearData acquisitionSafe operation
The invention discloses an online and fault diagnosing system for a crane. The system comprises: a signal collection subsystem which is used for obtaining various state information in the crane operation process; a datum acquisition subsystem which is used for acquiring the information obtained by the signal collection subsystem, preprocessing the information and outputting the information; an online monitoring and alarming subsystem which is used for analyzing the information output by the datum acquisition subsystem, the online monitoring, and the fault alarming; a wireless communication subsystem which is used for positioning the crane and transmitting data input to the online monitoring and alarming subsystem; and a remote monitoring and diagnosing subsystem which is used receiving and analyzing the data transmitted by the wireless communication subsystem to realize online monitoring, fault alarming, fault diagnosing and trend analyzing in a remote manner. The system has the functions of online monitoring, advance warning and alarming, analyzing, diagnosing, wireless communication remote monitoring and the like, so reliable bases are provided for the safe operation of the crane, and safety accidents are avoided or reduced.
Owner:HUAZHONG UNIV OF SCI & TECH
Noncontact electric energy and signal synchronous transmission system and control method thereof
InactiveCN105846684AReduce volumeImprove efficiencyDc-dc conversionElectric variable regulationLoose couplingEnergy conversion efficiency
Owner:CHINA UNIV OF MINING & TECH
Method and device for non-contact type synchronous transmission of energy and signal
ActiveCN101719726ARealize contactless synchronous transmissionSimple methodDc-dc conversionConversion without intermediate conversion to dcSecondary loopEngineering
The invention discloses a method for the non-contact type synchronous transmission of energy and signal. The method is characterized by comprising the following steps: establishing an AC electric energy transmission system of non-contact type; mounting a signal modulator in a primary loop; providing a digital signal for the signal modulator; extracting signal characteristics from a secondary loop and restoring the digital signal when the secondary loop receives electric energy; and finally realizing the non-contact type synchronous transmission of the energy and the signal. The non-contact type device for synchronously transmitting energy and signal, which is used for realizing the method, is provided with a DC power supply, an inverter and an exciting coil in the primary loop and characterized in that the signal modulator in the inverter is connected with a digital signal input unit and provided with a signal extracting and restoring circuit; and the output end of the signal extracting and restoring circuit outputs the restored digital signal. The invention has the advantages of easiness, practicability and low cost, restores the energy as a digital signal and has higher system reliability.
Owner:重庆前卫无线电能传输研究院有限公司
Electronic endoscope image system and electronic endoscope image processing method
ActiveCN103873830AEasy to moveImprove efficiencyImage enhancementClosed circuit television systemsImaging processingDsp processor
The invention relates to a digital medical image system, in particular to an electronic endoscope image system and an electronic endoscope image processing method. The electronic endoscope image system comprises a front end endoscope, an image processing board and a video monitor. The image processing board integrates a video acquisition and coding circuit, a DSP and a video decoding and drive amplifying circuit. The output of a CCD image sensor of the front end endoscope is connected with the video acquisition and coding circuit through signals, the output of the video acquisition and coding circuit is connected with the DSP, the output of the DSP is connected with the video decoding and drive amplifying circuit, and the video decoding and drive amplifying circuit is connected with the video monitor through a video output interface. The electronic endoscope image processing method includes the steps that image information acquired by the CCD image sensor is preprocessed with a wavelet transform and threshold shrinkage method, images are denoised and enhanced to obtain enhanced images, and then the images are decoded and displayed through the video monitor.
Owner:郑州赛福特电子设备有限公司
Master-salve distributed system and parallel communication method applying the same
InactiveCN101414291AEfficient accessA large amount of data is transferredDigital computer detailsTotal factory controlMicrocomputer systemProgrammable logic device
The invention provides a master-slave distributed system which comprises a master system consisting of PC104 modules, and slave systems consisting of a plurality of 51 single-chip microcomputers. A dual-port RAM is taken as a buffer area for data interaction between the master system consisting of the PC104 modules and the slave systems consisting of a plurality of 51 single-chip microcomputers. The system further comprises a programmable logic device. The system has the advantages of high transmission speed, good real-time characteristic, high reliability and simple circuit. Parallel communication between the PC104 and a plurality of 51 single-chip microcomputer systems can be achieved without address access conflict by combining the application of the programmable logic device. The invention also provides a parallel communication method which is applied to the master-slave distributed system.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD
2FSK-based wireless energy and signal synchronous transmission system and method
ActiveCN105007249AReliable communication channelLow costNear-field transmissionElectromagnetic wave systemHigh frequencySecondary circuit
The invention discloses a 2FSK-based wireless energy and signal synchronous transmission system and method. The system is formed by a primary circuit and a secondary circuit. An energy emission circuit and an energy receiving circuit are both double resonance circuits. The primary circuit is provided with a 2FSK modulation circuit. The secondary circuit is provided with a 2FSK demodulation circuit. The 2FSK demodulation circuit includes two signal pickup loops. The two signal pickup loops are inductively coupled to the energy emission circuit. The resonant frequencies of the two signal pickup loops correspond to the two frequencies of high frequency inversion signals output by an inversion circuit respectively. Signals output from the two signal pickup loops demodulate digital signals emitted by the primary circuit through a voltage comparator. The substantial effects are that wireless energy transmission and information synchronous transmission are achieved, demodulated digital signals can be directly output without an MCU, the circuit structure is simpler, and the cost is lower.
Owner:CHONGQING UNIV
Pipeline detection system based on pipeline robot and detection method
ActiveCN105915859AReduce in quantityEasy to connectProgramme-controlled manipulatorClosed circuit television systemsControl signalDrive motor
The invention provides a pipeline detection system based on a pipeline robot. The system comprises the pipeline robot, a cable reel and a collection control terminal. The pipeline robot comprises a camera module and a crawler. The camera module comprises a front-visual digital camera, a first microprocessor and a rotation motor. The crawler comprises a frame, wheels at two sides of the frame, a drive motor, a sensor set, a second microprocessor, a network transmission module and a first power carrier module. The cable reel comprises an electric power line, a second electric power carrier module, a fourth microprocessor and a network communication module. The collection control terminal is a mobile terminal with a detection module. According to the system, synchronous colinear transmission of power, video signals an control signals can be realized only by using double cable cores, the number of cables is reduced, the weight is reduced, extra long distance transmission can be realized through transmission in this mode; a traditional large detection box is unnecessary; and remote operation can be realized only by installing detection module software in the mobile terminal.
Owner:WUHAN EASY SIGHT TECH
A control apparatus and method for video communication picture display
ActiveCN1972402ARealize synchronous transmissionMeet different needsTelevision system detailsColor television detailsVideo imageComputer science
This invention relates to communication technique and discloses one visual communication display control device and method, wherein, this invention comprises the following parts: remote visual display control module and local visual frequency display control module; the method comprises the following steps: remote visual frequency display control module and local display control module get user remote visual data frame and local visual frequency data farm and uses one of remote visual image and local images as main picture with other as simultaneous display as sub picture.
Owner:TENCENT TECH (SHENZHEN) CO LTD
Synchronous transport model and method thereof
InactiveCN102380515BRealize synchronous transmissionSynchronous transfers are implemented preciselyRoll mill control devicesMeasuring devicesSampling instantShift register
Owner:WISDRI ENG & RES INC LTD
Synchronous transport model and method thereof
InactiveCN102380515ARealize synchronous transmissionSynchronous transfers are implemented preciselyRoll mill control devicesMeasuring devicesSampling instantShift register
The invention provides a synchronous transport model and a method thereof. Synchronous transport of data is realized by the aid of the special synchronous TPM (Transport Model), input parameter values are stored through a shift register, particularly, a real-time parameter value is input to a first position of the shift register, and shifts forwards in the shift register along with running of an object corresponding to the parameter value, and then is output when running of the corresponding object in the transport distance is completed. The synchronous transport model is characterized in that the possibility of changing of transport speed is taken into consideration, and synchronous transport can be realized accurately on condition of optionally variable speed due to the fact that real-time transport speed is required to be input at each sampling instant. Accordingly, the synchronous transport model and the method thereof can be widely applied to synchronous transport of data on condition of variable speed.
Owner:WISDRI ENG & RES INC LTD
Wireless parallel transmission method for energy and signal shared channel
ActiveCN106787244AWide range of bandwidthReduce bit error rateCircuit arrangementsEngineeringElectrical and Electronics engineering
The invention relates to a wireless parallel transmission method for an energy and signal shared channel and belongs to the field of radio energy transmission. The wireless parallel transmission method is used for solving the problem that the implementation of synchronous transmission of wireless energy and information needs two channels. According to the wireless parallel transmission method for the energy and signal shared channel, provided by the invention, a system primary side circuit and a system secondary side circuit adopt a pair of coils as a shared channel and achieve the parallel synchronous transmission of the information and the energy by adopting the same frequency; the system primary side circuit achieves the forward transmission of the information in a variable frequency manner, and the system secondary side circuit achieves the reverse transmission of the information in a controllable rectifying manner. The method is applied to wireless radio energy transmission.
Owner:HARBIN INST OF TECH
Sheet-grasping mechanical arm of full-automatic battery plate printing machine
InactiveCN101774173AAvoid squeezingAvoid vibrationProgramme-controlled manipulatorGripping headsHigh volume manufacturingElectric machinery
The invention relates to a sheet-grasping mechanical arm of a full-automatic battery plate printing machine, which comprises a vertical movement mechanism and a horizontal movement mechanism, wherein a front arm mechanism and a rear arm mechanism are arranged in the horizontal movement mechanism; the front arm mechanism and the rear arm mechanism have the same structure; the front arm mechanism comprises a pair of paw sheet mounting beams, a paw base, paw sheets, a sensor mounting plate, a magnetic grid and a sensor chip; the lower surface of the paw base is provided with a pair of parallel paw sheet mounting beams; 2 to 5 pairs of the paw sheets are uniformly distributed on one lateral surface of each paw sheet mounting beam; the front arm mechanism and the rear arm mechanism are fixedly connected with a mover of a corresponding X-direction linear motor respectively; and the lower ends of the paw sheets are provided with supporting sheets. The sheet-grasping mechanical arm of the full-automatic battery plate printing machine has the advantages of compact structure, high accuracy and quick motion, and can realize the synchronous conveying of two groups of materials and avoid extrusion and vibration to the materials in grasping movements; and the sheet-grasping mechanical arm of the full-automatic battery plate printing machine is safe and reliable to use, has a high working efficiency and meets requirements on mass production.
Owner:THE 45TH RES INST OF CETC
E-mail system fused with currency protocol, mail sending method and mail receiving method
ActiveCN109756418AIsochronous transferImprove securityPayment circuitsData switching networksEmail managementProtocol for Carrying Authentication for Network Access
An e-mail system fused with a currency protocol comprises an e-mail client loaded with a remittance plug-in to provide an e-mail interface with a remittance identifier for a user; The remittance mailmanagement server is respectively interacted with the mail client, the e-mail management server and the fund management server; The remittance mail management server cooperates with the E-mail management server and the fund management server. the remittance mail management server receives a mail message sent by the mail client; and judging whether the mail message contains the remittance identifier, if yes, the remittance mail management server scheduling the E-mail management server to send the mail message and scheduling the fund management server to execute a remittance operation accordingto the remittance identifier, and if not, the remittance mail management server only scheduling the E-mail management server to send the mail message. And the same platform and cross-platform synchronous transmission of information and value are realized.
Owner:SHANGHAI FINMAIL NETWORK TECH CO LTD
A MIDI file structure and a generating apparatus for Gongche notation
InactiveCN102169684ARealize synchronous transmissionRealize seamless dockingElectrophonic musical instrumentsComputer scienceAudio frequency
The invention relates to a MIDI file structure and a generating apparatus for Gongche notation. The MIDI file structure also comprises image signal parts of the Gongche notation and the image signal parts of the Gongche notation comprise notation image signal information of musical works, with a file comprising a plurality of notation image signal data areas. The image signal parts of the Gongchenotation are the extension on the basis of the MIDI signal part, with one being the extension after a MIDI file header information part and the other being the extension after a MIDI track part. A user can easily receive audio signals transmitted by MIDI multi-track signals while reading the Gongche notation. The file structure and the generating apparatus realize the synchronized storage and transmission of audio signals and the image signals, because the MIDI signals and image signals can be synthesized or resolved from the MIDI file for a specific Gongche notation by the generating apparatus.
Owner:HANGZHOU NORMAL UNIVERSITY
Direct speedup type continuous variable transmission chain structure of wind power generation set
InactiveCN104564544ACompact structureReduce volumeEngine fuctionsWind motor combinationsHydraulic cylinderElectricity
The invention discloses a direct speedup type continuous variable transmission chain structure of a wind power generation set. The direct speedup type continuous variable transmission chain structure comprises a wind wheel main shaft, a speed regulation output shaft, a transmission speedup mechanism and a speed regulation transmission mechanism, wherein the wind wheel main shaft and the speed regulation output shaft are arranged in a wheel hub; the wind wheel main shaft is fixedly connected with the speed regulation output shaft through the transmission speedup mechanism; the speed regulation output shaft is connected with the speed regulation transmission mechanism; the speed regulation output shaft is connected with a subsequent power generator device after speed regulation through the speed regulation transmission mechanism; the transmission speedup mechanism comprises an eccentric sleeve, a second bearing, a radial sliding column, a rotating wheel and an inner gear ring; the speed regulation transmission mechanism comprises a driving shaft, a driving friction piece, a driven friction piece, a hydraulic cylinder control type annular piston and a driven shaft. According to the direct speedup type continuous variable transmission chain structure of the wind power generation set, the direct speedup can be implemented, the structure is compact, the size is small, the weight is light, and the rotating speed can be continuously regulated.
Owner:ZHEJIANG UNIV
Transmission mechanism and 4D probe thereof
ActiveCN105465308ARealize synchronous transmissionMeet high precision requirementsGearingEnergy converterElectrical and Electronics engineering
The invention provides a transmission mechanism. A motor is driven by the transmission mechanism to drive a core part of an energy converter to swing. The transmission mechanism comprises a first transmission shaft, an eccentric connecting piece, a second transmission shaft, a sliding sleeve, a third transmission shaft, at least one connecting piece and at least one fixing shaft. A corresponding 4D probe is provided. By means of the transmission mechanism and the 4D probe, synchronous transmission of the motor and the core part of the energy converter is achieved, and therefore the requirement for high precision of the probe is met.
Owner:SONOSCAPE MEDICAL CORP
Corn peeling and threshing all-in-one machine
PendingCN107820863AAvoid mutual interferenceRisk of getting caught in the drive beltHarvestersThreshersAgricultural scienceAgricultural engineering
The invention relates to agricultural machinery, in particular to a corn peeling and threshing all-in-one machine. The machine comprises a rack, a peeling device and a threshing device, the peeling device and the threshing device are arranged in an inclined mode, the angles of inclination of the peeling device and the threshing device are opposite, the directions of feed inlets of the peeling device and the threshing device are opposite, the peeling device and the threshing device conduct transmission through a middle shaft, and belt wheels are located at the sides of the feed inlets of the peeling device and the threshing device. Accordingly, the problem that a discharge hole of the threshing device and a belt wheel transmission mechanism are located at the same side of the machine, and production safety accidents are likely to be caused is solved.
Owner:SHAANXI SCI TECH UNIV
Surface plasma transmission device, manufacturing method and application
InactiveCN103956549AReduce volumeIncrease transfer speedConductive layers on insulating-supportsCable/conductor manufactureInformation transmissionSurface plasmon
The invention provides a surface plasma transmission device, a manufacturing method and an application, and relates to the field of electronic parts and components. The surface plasma transmission device comprises a substrate, a nanometer waveguide and electrodes, wherein the nanometer waveguide and the electrodes are arranged on the substrate, the nanometer waveguide is connected with at least two electrodes, and the endpoints of the nanometer waveguide are exposed out of the electrodes. The manufacturing method of the surface plasma transmission device comprises the steps that a mark is manufactured on one side of the substrate through electron beam lithography; then, a silver nanowire is formed on the side with the mark of the substrate in a sedimentation mode; the silver nanowire is positioned according to the mark, the electrodes are etched on the substrate through electron beam lithography, wherein the silver nanowire is connected with at least two electrodes, and the two endpoints of the silver nanowire are exposed out of the electrodes. The surface plasma transmission device is small in size and capable of transmitting plasma and electrons at the same time, so that the transmission speed and transmission quantity of an existing information transmission device are increased remarkably, and the surface plasma transmission device can be applied to nanometer parts and components. The manufacturing method of the surface plasma transmission device is novel and ingenious.
Owner:宋明霞
Data transmission method, data transmission device, photoelectric conversion device and photoelectric conversion system
ActiveCN107547481ARealize synchronous transmissionSolve the problem of synchronous transmissionElectromagnetic network arrangementsRadio-over-fibreComputer hardwareData synchronization
The invention provides a data transmission method, a data transmission device, a photoelectric conversion device and a photoelectric conversion system, wherein the method comprises the steps of: extracting data to be transmitted from a received common public radio interface CPRI frame; inserting the data to be transmitted into an Ethernet frame, wherein the period of the Ethernet frame and the period of the CPRI frame are same; and sending the Ethernet frame. The problem that CPRI frame data and Ethernet frame data cannot be synchronously transmitted in a related technology can be solved; andthus, synchronous transmission of the CPRI frame data and the Ethernet frame data is realized.
Owner:ZTE CORP
One-way waveguide and one-way optical fiber
ActiveCN106353853AEliminate reflectionsEliminate scatterOptical waveguide light guideFibre with gratingsInelastic scatteringTransfer mode
The invention provides a production method of a one-way waveguide. The production method comprises the step of carrying out spiral spatial modulation on Weyl crystals. The Weyl crystals contain Weyl points in an energy band structure. The one-way waveguide produced by adopting the method provided by the invention can eliminate reflection of wave and replace an isolator, also eliminates various types of linear scattering and reduces loss and also inhibits non-linear scattering, so that waveguide signal strength threshold is improved; meanwhile, a transmission mode that any number of group and phase velocities are the same can be realized, so that synchronous transmission of signals is realized.
Owner:INST OF PHYSICS - CHINESE ACAD OF SCI +1
Multi-media file transmission method and device
InactiveCN105764020ARealize synchronous transmissionShorten sending timeMessaging/mailboxes/announcementsWireless commuication servicesFile transmissionComputer terminal
The present invention provides a multi-media file transmission method and device. The multi-media file transmission method comprises: building multimedia files according to a received building instruction; and timely sending the built multimedia files to a target terminal according to a preset transmission mode. According to the invention, the transmission time of multimedia files is saved, the transmission efficiency of the multimedia files is enhanced, the user operation is simplified and the user experience is improved.
Owner:YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
Audio/video transmission method and device
ActiveCN105828014ARealize synchronous transmissionSimultaneous/sequential multiple television signal transmissionElectrical cable transmission adaptationVideo transmissionHigh-definition video
The invention provides an audio / video transmission method and device. The method comprises following steps of determining the minimum length of video fields in MAC (Media Access Control) frames according to the total length of the MAC frames and a preset video transmission efficiency threshold value; determining the minimum length of audio fields in the MAC frames according to the total length of the MAC frames and a preset audio sampling efficiency threshold value; determining the maximum length of information fields in the MAC frames according to the length of the custom fields in the MAC frames, the minimum length of the video fields and the minimum length of the audio fields; filling to-be-transmitted audio / video data to the custom fields of the MAC frames according to the minimum length of the video fields, the minimum length of the audio fields, the maximum length of the information fields and actual transmission demands; and sending the data to a receiving end. Through application of the embodiment of the method and the device, synchronous audio transmission can be realized by using existing twisted pair on the basis of transmitting high-definition videos by using the twisted pair.
Owner:ZHEJIANG UNIVIEW TECH CO LTD
Robot control method based on 5G
ActiveCN110253571AExpand the scope of activitiesReduce maintenance difficultyProgramme-controlled manipulatorControl systemComputer module
The invention provides a robot control method based on 5G. The method is applied to a robot control system, the control system comprises a main control unit and an execution unit, the main control unit and the execution unit are provided with a 5G communication module respectively, and the main control unit and the execution unit are in 5G communication wireless connection through the 5G communication modules; the control method comprises the steps that S101, the main control unit receives information, and judges whether a preset instruction is generated or not according to the received information; if yes, S102 is executed, and if not, S101 is executed; S102, the preset instruction is sent to the 5G communication module of the execution unit corresponding to the preset instruction through the 5G communication module of the main control unit; and S103, the 5G communication module of the execution unit receives the preset instruction, and the execution unit finishes corresponding work according to the preset instruction. According to the method, the robot control system is divided into the main control unit and the execution unit, the execution unit and the main control unit are in 5G communication wireless connection, so that the movement range of a robot can be enlarged, the line is simplified, and the maintenance difficulty is reduced.
Owner:中奕智创医疗科技有限公司
Spatial data synchronization method, terminal and computer readable storage medium
ActiveCN110674221ARealize synchronous transmissionReal-time deliveryDatabase distribution/replicationGeographical information databasesData synchronizationProgram instruction
The invention discloses a spatial data synchronization method, a terminal and a computer readable storage medium, belongs to spatial data synchronous transmission, and aims to solve the technical problem of how to provide a spatial data synchronization method which is high in performance and capable of realizing synchronization in case of network disconnection. The synchronization method comprisesthe following steps: performing primary format conversion on spatial data in a source database based on a data format supported by an intermediate cache; caching the spatial data subjected to the primary format conversion in an intermediate cache in real time; and if the network state is good, sending the spatial data subjected to secondary format conversion to the target database in real time based on the data format supported by the target database, and if the network is blocked or the efficiency is poor, temporarily storing the spatial data subjected to primary format conversion in messagemiddleware. The terminal comprises a processor and a memory. The processor is configured to call a program instruction to execute the synchronization method. A computer program is stored in the storage medium, and the processor executes the method when program instructions are executed by the processor.
Owner:INSPUR SOFTWARE CO LTD
Magnetic coupling energy-carrying reverse communication method for underground measurement while drilling
ActiveCN109756248AAvoid structureAvoid reliabilityNear-field transmissionTransmission systemsEngineeringCommunication device
The invention belongs to the technical field of drilling engineering, and particularly relates to a magnetic coupling energy-carrying reverse communication method for underground measurement while drilling, which is characterized by comprising the following steps of: 1, driving a drill bit to rotate by a generator short section; 2, expoloring measurement signals of a geological parameter sensor and sending the signals to the main control circuit short section through a wireless magnetic coupling communication and energy carrying device; The engineering parameter sensor transmits a measurementsignal to the wireless receiving short section through the wireless magnetic coupling communication device; And step 3, enabling the wireless receiving short section to carry out signal amplification,filter and perform demodulation processing and upload the processed signals to a ground system. Electromagnetic induction principle is utilized;, Wireless non-contact communication is achieved in a wireless magnetic coupling communication mode, the wireless magnetic communication process is superposed, synchronous transmission of electric energy and information of a common coupling mechanism is achieved, the problems that a communication carrier is prone to structural damage, poor in reliability, short in service life and the like due to underground high temperature, strong corrosion and sealing requirements are solved, and the data transmission reliability is improved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Anti-splashing welding device for reaction type mechanical parts and application method of anti-splashing welding device
ActiveCN114505631ARealize synchronous transmissionAchieving airflow barrier interceptionWelding/cutting auxillary devicesAuxillary welding devicesSlag (welding)Engineering
The invention discloses a counteraction type mechanical part anti-splashing welding device and a using method thereof, and the counteraction type mechanical part anti-splashing welding device comprises a main body mechanism, a double-rack synchronous type centering advancing mechanism, a gantry bearing type welding mechanism, a semi-surrounding type blocking protection mechanism, a convection leveling anti-splashing gettering mechanism, a self-adaptive attaching clamping mechanism and a welding point positioning mechanism, the double-rack synchronous centering advancing mechanism is arranged on the bottom wall of the main body mechanism, the gantry bearing type welding mechanisms are arranged on the two sides of the main body mechanism, and the semi-surrounding type blocking protection mechanism is arranged on the upper wall of the main body mechanism. The invention belongs to the field of welding of spare and accessory parts, and particularly relates to an anti-splashing welding device for reaction type mechanical spare and accessory parts and a using method of the anti-splashing welding device. According to the anti-splashing welding device for the reaction type mechanical parts, one-time positioning and three-point fixing, clamping and welding can be conducted on two welding workpieces, and smoke and welding slag generated during welding can be subjected to reverse action collection treatment.
Owner:江苏楚亚电气科技有限公司
Horizontal cap screwing machine
PendingCN111661798ARealize synchronous transmissionSimple structureCapsThreaded caps applicationEngineeringMachine
The invention relates to a horizontal cap screwing machine. The horizontal cap screwing machine comprises a machine table, wherein the two sides of the machine table are respectively provided with a first feeding mechanism for conveying bottle caps and a second feeding mechanism for conveying bottle bodies; the machine table is provided with a conveying device for conveying the horizontally placedbottle caps and the bottle bodies, an aligning device for enabling the bottle caps and the bottle bodies to be tightly adhered and facilitating cap screwing and a cap screwing device for screwing thebottle caps and the bottle bodies; the cap screwing device is arranged above the conveying device; and the aligning device is arranged between the conveying device and the cap screwing device. By adopting the technical scheme, due to the fact that the bottle caps and the bottle bodies horizontally placed are adopted, the cap screwing mechanism achieves cap screwing in the transmission process, and compared with the prior art that intermittent movement is adopted, the cap screwing mechanism is synchronously carried out without stopping continuously, so that the speed is greatly improved; and by arranging the aligning device, before the bottle caps and the bottle bodies enter the cap screwing device, the bottle caps and the bottle bodies are mutually tightly attached to facilitate cap screwing, so that the accuracy and the qualified rate are improved.
Owner:浙江皮克机械设备有限公司
Vision-based precision approach path indicator flight check method
ActiveCN108225735AHigh precisionReduce the impact of human factor subjectivityImage analysisOptical apparatus testingAviationLight spot
The invention discloses a vision-based precision approach path indicator flight check method, which belongs to the technical field of aviation flight check. A camera carried by a plane input an acquired video sequence into a computer in real time, and salient region detection is sequentially carried out on images of current frames. Midpoints of rectangular regions in the images of the current frames are sequentially found out as coordinates of stable light spots of each PAPI (precision approach path indicator) lamp at corresponding moments. The stable light spot at the later moment and the stable light spot at the previous moment are matched for the same PAPI lamp. The moment when each light spot turns from white to red is found out, and when a similar distance delta d is greater than a threshold value T2, the light spot is believed to turn from white to red. A curve of the change of delta d with time t is drawn, and color change moments tn of the four lamps are sequentially recorded.Plane positioning data at each change moment are acquired, and after the altitude of the plane and the horizontal distance between the plane and the lamps are obtained, elevations of the four PAPI lamps are calculated. The method increases the precision of flight check, the efficiency of flight check and the integrity of check.
Owner:BEIHANG UNIV
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