Patents
Literature

451results about How to "Improve stability and reliability" patented technology

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

Independent unmanned aerial vehicle landing method and system based on two-dimensional code and inertial navigation assistance

The invention provides an independent unmanned aerial vehicle landing method based on a two-dimensional code and inertial navigation assistance. An unmanned aerial vehicle, an onboard camera, an onboard computer, a GNSS positioning device, an inertial measurement component and a two-dimensional code with authorization information are arranged. The unmanned aerial vehicle flies near a landing pointby GNSS/INS combined navigation; with an image identification two-dimensional code collected by the camera, the authorization information is read when the image identification two-dimensional code matches a two-dimensional code information database successfully; the unmanned aerial vehicle determines the location of the center point of the two-dimensional code under the coordinate system of the unmanned aerial vehicle and an attitude of the unmanned aerial vehicle under a two-dimensional code local coordinate system by means of visual and inertial combined navigation; and the attitude of theunmanned aerial vehicle is adjusted and automatic landing is carried out by controlling offsets of the landing point and the landing attitude. Compared with the prior art, the method has the followingadvantages: the operation becomes easy; deployment costs are low; the environmental interference is eliminated; the stability and safety are high; and the method is suitable for various fields of logistics freight transportation and disaster relief and the like and is easy to promote.
Owner:WUHAN UNIV

Method and system for accessing video conference through network live broadcast

The invention is applicable to the technical field of video communications, and provides a method and system for accessing a video conference through network live broadcast. A video conference systemcomprises a user agent server, a live broadcast server, a video conference server, a Web page, a background server, a small file server and a media server. The method for accessing the video conference comprises the following steps: enabling the user agent server to be connected to the live broadcast server to acquire information of a live broadcast room; and respectively enabling the small file server and the media server to receive an instruction sent by the live broadcast server and log in to the video conference server to obtain conference contents, thereby enabling a Web user to directlyacquire the relevant conference contents from the user agent server. The separation of services and data is achieved through the cooperation of the servers, thereby improving the stability and reliability of the system. The method and the system for accessing the video conference through network live broadcast provided by the invention can enable the user to quickly access the video conference through the web page and acquire comprehensive conference information at the same time.
Owner:SHENZHEN INPOR CLOUD COMPUTING CO LTD

High-accuracy detection method of real-time temperature data fusion of multiple sensors

The invention discloses a high-accuracy detection method of real-time temperature data fusion of multiple sensors, which comprises the following steps of: step 1, remissness error removal based on relativity function sequence: (1) acquiring temperature data, (2) judging whether the number of acquisition times is larger than or equal to a set value C1 or not, if NO, continuing to acquire the temperature data, if YES, judging whether the number of the acquisition times is larger than the set value C1 or not, if NO, computing the variance and the mean value initial value of sensors, if YES, computing the variance and the mean value of the sensors in a recurrent way, (3) computing the fusion degree of the sensors, (4) computing the support degree of the sensors, and (5) selecting valid sensors, and deleting the temperature data obtained from invalid sensors; step 2, orthogonal neural network based temperature information fusion of the multiple sensors: (1) neural network training and weight vector recurrence, (2) computing neural network output, and (3) computing a temperature fusion value of the multiple sensors; and step 3, correcting variance and mean value of the invalid sensors. By the method, not only can the temperature detection accuracy and credibility be improved, related systems can be conveniently processed in real time. The method has the advantages that the stability is good, the compute is simple, the implementation is easy, and the like.
Owner:浙江微松冷链科技有限公司 +1

High-voltage wire magnetic field induction energy taking device for high-voltage transmission line online monitoring

The invention discloses a high-voltage wire magnetic field induction energy taking device for high-voltage transmission line online monitoring. The device comprises a coil (1), a rectification circuit (2), a switching circuit (3), a control circuit (4) and an energy storage circuit (5), wherein the coil is sleeved on a high-voltage wire; alternating current is induced from the high-voltage wire and is fed to the rectification circuit by utilizing the electromagnetic induction principle, the alternating current is converted into direct current through the rectification circuit and charges the energy storage circuit, and the switching circuit (3) is connected in parallel at the output end of the rectification circuit (2); and the control circuit detects output voltage of the energy storage circuit, so that the on/off of the switching circuit is controlled, and the energy storage circuit outputs voltage and current. The application range of the energy taking device is reduced, and the power loss of the switching circuit is reduced; because the switching circuit is positioned in a switch-on state for a long time in actual use, and the magnetic induction intensity in a magnetic core of the coil is low, the power loss of the magnetic core is reduced; and because the whole power loss of the energy taking device is reduced, the service life of the device is prolonged, and the stability and the reliability of the device are greatly improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1

Micro-grid system of grid-connected island power grid

The invention discloses a micro-grid system of a grid-connected island power grid. The system comprises an energy storage system, a power distribution network load system, a diesel power generating system, a wind driven generator system, an optical fiber communication network, and a micro-grid energy coordinated optimization and control system. The energy storage system accesses an AC bus of an island power grid through a boosting transformer. The power distribution network load system makes user load ends connected with a power distribution network load transformer through fast solid-state switches. The diesel power generating system is used as a main power supply when the micro-grid system is in isolated island operation. The wind driven generator system comprises an asynchronous wind generating set. The stator output sides of the asynchronous wind generating set are connected in series with back-to-back converters. The output of the back-to-back converters is transmitted to the AC bus of the island power grid through boosting. In the island power grid, optical fibers are set up along a power transmission and distribution line, and optical fiber communication transmitter-receiver devices are installed on power supply points, load points, and control terminals, so as to form the optical fiber communication network of the island power grid. The micro-grid energy coordinated optimization and control system collects island power grid operation data in real time through the optical fiber communication network, and releases control instructions.
Owner:STATE GRID CORP OF CHINA +2

Volume variable rotation compressor

The invention discloses a volume variable rotation compressor. The compressor comprises an outer shell, a motor and a cylinder component, the motor and the cylinder component are arranged in the outer shell; wherein the motor and the cylinder component are connected through a crank shaft, the tail part of a first slip sheet is provided with an elastic part; the tail part of a second slip sheet is not provided with an elastic part; a groove is arranged on the second slip sheet, a position where is opposite to the second slip sheet on a second flange, or a position where is opposite to the second slip sheet on a middle division plate; a tunnel which is used for communicating the groove is arranged on the cylinder component; the volume variable rotation compressor also comprises a gas switching device, which switches the pressure of the groove between a high-pressure side pressure and a low-pressure side pressure. Through controlling the pressure differential to control the movement of slip sheet, reliable switch between single cylinder operation and double-cylinder operation can be achieved, and thus leakage is effectively prevented; when the slip sheet stays still, the inner cylinder and the tail part of the slip sheet groove are both in a high-pressure state so as to avoid the phenomenon of gas mixing caused by pressure difference.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION

Collision power-off protection system of electromobile

The invention relates to the technical field of electromobiles, in particular to a collision power-off protection system of an electromobile. The system comprises a battery management unit, a power battery pack, a finished automobile control unit, an airbag controller, an automobile body collision sensor and an automobile body controller, wherein the battery management unit, the finished automobile control unit, the airbag controller and the automobile body controller are connected via a CAN (Controller Area Network) bus; the airbag controller is further connected with the battery management unit and the automobile body controller via wires; the airbag controller is connected with the automobile body collision sensor via a wire; and the battery management unit is connected with the power battery pack via a wire. The battery management unit, the finished automobile control unit and the automobile body controller of the system can simultaneously receive three types of signals emitted by an airbag, i.e., a CAN signal, a wire current signal and a radio signal. When any signal is received, the control units related to collision can implement passive safety protection measures of a vehicle, and the collision power-off reliability and stability are improved.
Owner:DONGFENG MOTOR CORP HUBEI

Attachable type electrocardiogram and impedance cardiogram integration monitoring sensor

The invention discloses an attachable type electrocardiogram and impedance cardiogram integration monitoring sensor which comprises a first electrocardiogram detecting electrode, a second electrocardiogram detecting electrode, a first impedance cardiogram exciting electrode, a second impedance cardiogram exciting electrode, a first impedance cardiogram detecting electrode, a second impedance cardiogram detecting electrode, a thin film rechargeable battery, a signal storage unit and a wireless charging inductor which are connected with an electrocardiogram and impedance cardiogram signal detecting control circuit through interconnection leading wires. The electrocardiogram and impedance cardiogram signal detecting control circuit detects and processes electrocardiogram and impedance cardiogram signals, and local storage and external transmission are carried out. The novel sensor can be attached near the heart of a human body like a band-aid, meanwhile, electrocardiogram and impedance cardiogram continuous real-time monitoring is carried out, size is small, multiple functions are achieved, wireless charging and wireless data transmission can be carried out, the constraint of a traditional electrocardiogram and impedance cardiogram leading connecting line is avoided, wearing type monitoring is convenient, an integrated active dry electrode is used for monitoring, and the electrocardiogram and impedance cardiogram monitoring comfort degree is greatly improved.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI

Sampling point differential protection misoperation prevention method

The invention relates to a sampling point differential protection misoperation prevention method, belonging to the technical field of relay protection of power systems. The method comprises the following steps of: firstly, performing difference calculation to differential current and brake current sampling points, and judging whether the differenced differential current and brake current sampling values meet a rate brake condition, wherein influence of unsaturated CT attenuation direct current component on the synthesized differential current may be weakened through a difference algorithm; and judging whether a criterion for opening sampling point differential protection is satisfied according to ratio of the sampling values of the differenced differential current and brake current. The method solves a problem of misoperation of sampling point differential protection caused by too fast attenuation of the direct component when external fault single CT is saturated and unsaturated CT current contains large direct current component and flows through a low current converter of a protection device. Meanwhile, by the method, sampling point differential protection causes no misoperation when waveform is abnormal, and causes reliable operation when normal failure happens, thus, reliability of sampling point differential protection is improved.
Owner:XUJI GRP +3

Magnetic bead separation device with adjustable magnetic flux

InactiveCN104371918AAvoid multiple complicated operationsImprove stability and reliabilityBiological testingStress based microorganism growth stimulationElectrical controlMagnetic liquids
The invention relates to a magnetic bead separation device with an adjustable magnetic flux. The magnetic bead separation device comprises a micropore plate, a micropore plate support, a base and a magnetic rod, wherein the micropore plate is placed on the micropore plate support, and the micropore plate support is placed on the base. The magnetic bead separation device also comprises a floating support, a lifting actuating unit and an electric control module, wherein the magnetic rod is adsorbed on the floating support by virtue of magnetism; and the floating support is connected with the electric control module by virtue of the lifting power mechanism, and under the control of the electric control module, the lifting power mechanism drives the floating support to realize upward and downward movements of the magnetic rod. By adopting the magnetic bead separation device disclosed by the invention, the lifting power mechanism is controlled by the electric control module to drive the magnetic rod to move up and down, thereby realizing magnetic liquid separation, avoiding a plurality of times of miscellaneous operation of a mechanical arm, improving the stability and reliability of a system, and improving the working efficiency of an automatic work station.
Owner:NANJING ZHONGKE SHENGUANG TECH

Measuring and controlling system for single-cylinder engine testboard

The invention discloses a measuring and controlling system for a single-cylinder engine testboard, which comprises an upper computer, an intelligent instrument, a PLC (programmable logic controller), a plurality of sensors and a first electric actuator, wherein the upper computer is respectively connected with the intelligent instrument and the PLC; the upper computer sets a stable judgment interval for the operational parameters of an engine and sets an alarming threshold value, and downloads online to the intelligent instrument; the intelligent instrument is respectively connected with the sensors and the first electric actuator, so as to obtain operational parameters of the engine at a monitoring point during the running process of a single cylinder engine; further the working state of the first electric actuator is adjusted, and an auxiliary system is controlled; the intelligent instrument is further connected with the PLC and used for conveying warning signals to the PLC; and the PLC gives an alarm for prompting according to the warning signals. In the invention, through the application of the intelligent instrument, discrepancies caused by multitasking and processing speed of the upper computer can be overcome, task dispersion is achieved, and the reliability and the stability of the overall system are improved.
Owner:NO 711 RES INST CHINA SHIPPING HEAVY IND GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products