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1491results about How to "Improve stability and reliability" patented technology

Method for detecting safe power-line-cruising distance of UAV (unmanned aerial vehicle)

The invention discloses a method for detecting the safe power-line-cruising distance of a UAV (unmanned aerial vehicle), which comprises the following steps of: (1) carrying out analysis according to the characteristics of electromagnetic fields of to-be-detected high-tension transmission lines in different voltage levels, and establishing corresponding electromagnetic-field simulation calculation models; (2) determining the maximum errors of electronic devices (which are susceptible to electromagnetic interference) carried by the power-line-cruising UAV and measuring devices used in the process of route planning making before routing inspection; (3) according to the requirements of the determined electronic devices on electromagnetic fields in the process of normal operating, by using the electromagnetic-field simulation calculation models of the high-tension transmission lines in different voltage levels and electromagnetic-field simulation calculation software, calculating the similarities and differences of an electromagnetic environment when the UAV has different distances away from a transmission conductor in the process of carrying out line-cruising operation on each high-tension transmission line, thereby determining the range of the safe distance between the UAV and the transmission conductor; and (4) carrying out line-cruising by the UAV according to the determined safe distance of each to-be-detected transmission line, thereby avoiding the situations that the devices run disorderly, the flight communication is interfered, a flight mission is failed, and the like caused by the electromagnetic field of the transmission conductor, and then ensuring the safety, stability and reliability of a flight.
Owner:STATE GRID INTELLIGENCE TECH CO LTD

Postive electrode for rechargeable lithium battery and rechargeable lithium battery including same

A positive electrode including a current collector; a positive active material layer disposed on the current collector; and a coating layer disposed on the positive active material layer. The coating layer includes a binder and a inorganic additive. The binder is a poly(vinylidenefluoride-hexafluoropropylene) copolymer comprising 2 to 16 mole % of hexafluoropropylene. The positive electrode for a rechargeable lithium battery suppresses side-reactions between a positive electrode and an electrolyte, at a high voltage.
Owner:SAMSUNG SDI CO LTD

Underground moving target optical fingerprint positioning and tracking method based on visible light communication

The invention discloses an underground moving target optical fingerprint positioning and tracking method based on visible light communication and belongs to an underground moving target positioning and tracking method for a coal mine. The method comprises the following steps: establishing an optical fingerprint database in an offline stage, and positioning and tracking a target in a fingerprint matching mode in an online stage; detecting a signal of an illuminating lamp base station through the carried receiver in the moving process of the moving target, and transmitting the calculated information to the illuminating lamp base station; receiving the user information through the illuminating lamp base station, calculating the direction information of the user signal, which is relative to the base station, and assembling the arrival angle information, the ID of the base station, the light signal intensity transmitted by the moving target, and the target ID into a positioning data packet which is transmitted to a positioning server; and calculating the position of the target through the positioning server. The moving direction of the target is tracked in real time through the illuminating lamp base station by utilizing the blind adaptive multi-light source detecting algorithm based on the receiving intensity, the accurate position of the target is obtained, and positioning tracking is realized. The method has the advantage that the position of the target can be accurately and effectively estimated.
Owner:CHINA UNIV OF MINING & TECH

Blade server management system

The present invention discloses a blade server management system comprising a plurality of management subsystems provided on each blade in a blade server and connected to each other via a local area network, each of which implements remote control and self-management for the corresponding blade, and said management subsystems including at least one master management subsystem for monitoring the operation parameters of the blade server through a monitoring subsystem; a communication subsystem provided on a backboard for connecting a external network and said local area network made up of said management subsystems; and a monitoring subsystem provided on the backboard and connected to said management subsystems for monitoring the operation parameters of the blade server based on a command from the master management subsystem. The blade server management system of the present invention has high system reliability and stability as well as a simple routing design while reducing the complexity of system design.
Owner:LENOVO SOFTWARE +1

UTC high-precision time synchronization method based on optical transmission network

The invention discloses a UTC high-precision time synchronization method based on an optical transmission network. In the invention, time base signals are transmitted by the optical transmission network between a primary station between a secondary station: firstly, the time base is transmitted to the secondary station by the primary station, and then time interval deviation is calculated by the secondary station based on time shown by a local clock of the secondary station and the time base; secondly, the local clock of the secondary station is corrected by the secondary station based on thetime interval deviation and a checked time base is returned to the primary station by the secondary station; and finally, the time base originally sent to the secondary station is corrected by the primary station based on the checked time base and the time shown by a local clock of the primary station and the corrected time base is sent to the secondary station again by the primary station. When the time base is transmitted between the primary station and the secondary station, two-way comparison is conducted between the primary station and the secondary station to precisely measure transmission delay asymmetry of a transmission loading network, accurately judge and standardize time and frequency synchronization scope of the secondary station, and provide 3G/4G communication networks withthe high-precision time synchronization method based on the integration of time and frequency, thereby realizing higher-precision time and frequency synchronization.
Owner:DATANG TELECOM TECH CO LTD

Hydraulic system and rotary drilling rig comprising same

The invention discloses a hydraulic system and a rotary drilling rig comprising the same. The disclosed hydraulic system comprises a main hydraulic circuit, wherein the main hydraulic circuit comprises a hydraulic pump, a hydraulic actuator and a reversing valve; the reversing valve is connected between the hydraulic pump and a pressure oil cylinder; and a self-locking mechanism is arranged between two hydraulic chambers of the hydraulic actuator. Compared with the prior art, the hydraulic system also comprises a follow-up control valve and a follow-up control overflow valve, wherein the follow-up control valve is connected between an oil inlet of the follow-up control overflow valve and the main hydraulic circuit. In the disclosed hydraulic system, when the oil inlet of the follow-up control overflow valve is communicated with the main hydraulic circuit, the overflow pressure of the follow-up control overflow valve can be reflected on the main hydraulic circuit; and the action speed of the hydraulic actuator is adjusted by influencing the flow quantity of hydraulic oil which is supplied to the hydraulic actuator by the main hydraulic circuit, so that the hydraulic actuator keeps synchronous action with a load part to realize the follow-up of the hydraulic actuator and the load part.
Owner:BEIJING SANY HEAVY MASCH CO LTD

High-precision high-reliability and all-fiber current transformer

The invention belongs to the technical field of all-fiber current transformers, and particularly relates to a high-precision high-reliability and all-fiber current transformer. A redundancy design method adopting active optical devices is applied so that output optical power of light source units is enabled to be more stable and stability of light source average wavelength is enhanced. A depolarization head is additionally arranged in an optical path system so that stability and measurement precision of the optical path system can be enhanced. Two beams of light are converted into electric signals to be transmitted to a signal processing unit by utilizing correlation of output light of the two output ends of a second single-mode coupler through a digital signal processing unit, and suppression of light source intensity noise is realized by utilizing a digital circuit subtraction method so that signal-to-noise ratio is enhanced and measurement precision of the system is enhanced. A low birefringence optical fiber Verdet constant and a transformation ratio error generated by change of wave plate phase delay along with temperature are enabled to be mutually compensated via an all-fiber current transformer transformation ratio temperature error automatic compensation technology so that full-temperature measurement precision of the system is enhanced.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST

Charging landing gear, unmanned aerial vehicle, charging platform and unmanned aerial vehicle cruising and charging system

The invention discloses a charging landing gear suitable for an unmanned aerial vehicle. A cross rod of the charging landing gear is provided with a plurality of charging contact parts, wherein a charging circuit module is also arranged in the cross rod; and adapting of a charging interface of the unmanned aerial vehicle can be directly finished through the landing gear. The invention discloses a landing gear-based unmanned aerial vehicle. The unmanned aerial vehicle can be electrically connected directly through the landing gear when charged; the unmanned aerial vehicle stops on a charging platform of the matched with the landing gear when needing to be charged; and the unmanned aerial vehicle can be charged through the charging platform. The invention further discloses the charging platform matched with the landing gear. Through the design which is simple in structure and low in cost, good contact of the charging contact parts is ensured. The invention further provides an unmanned aerial vehicle cruising and charging system based on the unmanned aerial vehicle and the charging platform. The charging platform can be searched for the unmanned aerial vehicle through a cloud management server; and a flight path is set for the unmanned aerial vehicle.
Owner:浙江国正安全技术有限公司

Lithium ion battery cell packet preparation method and system

The invention discloses a lithium ion battery cell packet preparation method, including the following steps: pole piece material is made into negative pole pieces, and the negative pole pieces are transmitted to a negative pole sorting machine; qualified negative pole pieces are selected from the negative pole pieces and transmitted to a lamination stacking machine; the pole piece material is made into positive poles pieces, and the positive pole pieces are transmitted to a positive pole sorting machine; qualified positive pole pieces are selected from the positive pole pieces and transmitted to a positive pole bag machine; the qualified positive pole pieces are made into positive pole bags, and the positive pole bags are transmitted to the lamination stacking machine; lamination stacking is carried out on the positive pole bags and the qualified negative pole pieces by the lamination stacking machine, thus obtaining the cell packet. The invention also discloses a lithium ion battery cell packet preparation system. The invention comprises a negative pole processing machine, a split pole sorting machine, a lamination stacking machine, a positive pole bag machine, a positive pole sorting machine and a positive pole processing machine which are arranged in sequence, transmission equipment is arranged between each two equipment, thus cell packet can be prepared without manual operation and reliability and stability of the cell packet are improved.
Owner:GEESUN AUTOMATION TECH

A method for balancing the loads in the mobile communication system and its communication equipment

The disclosed loading balance method comprises: the access network node determines the selection of UE CN-node; in the selection range, selects one of current loading parameter, and transmits the UE access signaling. This invention balances loading among all CN nodes efficiently, and improves system stability and reliability.
Owner:CHINA ACAD OF TELECOMM TECH

Expansible Intersomatic Cage

An expansible intervertebral implant is disclosed, various embodiments of which comprise an elongated body along a longitudinal axis comprised between a proximal end and a distal end, a flexible arm mounted in the vicinity of the distal end of the longitudinal body and movable between: a folded-back position with the arm substantially parallel to the axis, and a deployed position with the arm not parallel to the axis and away from the body to expand said implant along an axis, by assuming the general shape of a circular arc, a means for deployment of said flexible arm for deploying the latter from the folded-back position to the deployed position, by the sliding of a proximal portion of said flexible arm with respect to the body inducing an increase in the space occupied by the implant, greater than the space of the implant in the folded-back position.
Owner:LDR MEDICAL

Battery pack

A battery pack adapted to automatically intercept a charge and discharge path when the temperature of a battery increases to no less than a reference temperature during a charging and / or discharging of the battery to improve stability and reliability. The battery pack includes at least one rechargeable battery; at least one posistor located on one side of the battery and connected to the battery in parallel at substantially a same time and having a resistance value which increases when the temperature of the battery increases; a first switch having one end connected to the posistor and configured to be applied with a driving voltage when the resistance value of the posistor increases; and a second switch connected to a charge and discharge path of the battery and connected to the first switch at substantially a same time to intercept the charge and discharge path when the first switch operates.
Owner:SAMSUNG SDI CO LTD

Receiver system

The present invention concerns a receiver circuit including an input terminal through which an input signal is received, said receiver circuit further including:a first amplifier stage connected via its input to the input terminal of said receiver circuit;an envelope detector stage for detecting the incoming signal maxima to recover the signal envelope, said detector stage being connected to the output of the first stage.
Owner:EM MICROELECTRONIC-MARIN

High-precision electric field driven spray deposition 3D printer and working method thereof

The invention discloses a high-precision electric field driven spray deposition 3D printer and a working method thereof, and solves the problems of a traditional 3D printer on multiple aspects of resolution, stability and controllability; high-precision printing of multilayer structures can be realized; the printing process is observed and monitored in real time; and high-precision pattern printing is performed on insulation substrates through electric conducting materials. The high-precision electric field driven spray deposition 3D printer comprises a mounting baseplate; a Y-axle worktable is arranged on the mounting baseplate; a vacuum absorption platform is fixed on the Y-axle worktable; a printing substrate is absorbed on the vacuum absorption platform; a printing nozzle and a vertical observation camera are correspondingly arranged above the printing substrate, and are connected to a Z-axle worktable; the Z-axle worktable is fixed on an X-axle worktable; a squint observation camera is correspondingly arranged on one side of the printing nozzle; an LED light source and a far infrared curing light source are correspondingly arranged on the other side of the printing nozzle; theprinting nozzle communicates with a storage bottle; and the storage bottle is arranged on a lifting table.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
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