75results about How to "Reliability is not reduced" patented technology

The invention discloses a multi-node synchronous sampling and data transmission method in a ring communication network. The main node generates a synchronous pulse AD _ CVT and a transmission triggerpulse TX _ SYN which are consistent with a system sampling interval Ts, and meanwhile, the main node completes local real-time data collection under the control of the AD _ CVT and completes data transmission under the trigger of a TX _ SYN signal; meanwhile, each control node divides a physical channel into a real-time logic channel and a non-real-time logic channel, real-time sampling data services are classified into the real-time logic channels to be transmitted, real-time sampling data are extracted in a staggered mode and sent out from two different directions of the ring network, and non-real-time data are classified into the non-real-time logic channels to be transmitted. According to the method, synchronous sampling and synchronous data transmission of each control node in the ring network are realized, and the data sampling efficiency and the data transmission instantaneity are improved.

The invention relates to a multicast service data flow load balancing method in the field of data communication. Aiming at the problem of unbalanced load caused by multicast service data flow in transmission process in the prior art, the invention discloses a transmission control method with balanced multicast service data load and an access device thereof. The method comprises the following steps: a. receiving a multicast adding request, and identifying the multicast information of the multicast adding request; b. distributing the multicast data flow of different multicast groups into different VLANs for transmission according to the multicast group information; and c. forming a forwarding list item of the request multicast in the distributed VLANs, and forwarding the multicast adding request to control protocol message. The access device comprises a receiving module of the multicast adding request, a VLAN distribution module, a multicast forwarding table maintenance module, and a multicast service data forwarding module. The invention can realize load balancing in multi-instance networking environment and makes full use of network bandwidth resources.

The invention discloses a semiconductor device and a preparation method thereof. The semiconductor device comprises a substrate, a semiconductor layer, a source, a drain, a grid, a source field plate and a high dielectric constant dielectric layer, wherein the semiconductor layer is located on the substrate; the source and the drain are located on the semiconductor layer; the grid on the semiconductor layer is arranged between the source and the drain; the source field plate is electrically connected with the source; the high dielectric constant dielectric layer is located between the grid and the source field plate; and the dielectric constant of the high dielectric constant dielectric layer is greater than 3.9. The semiconductor device disclosed by the invention has relatively high gate-source capacitance, so that node capacitance of the semiconductor device and a structure cascaded with the semiconductor device can be matched with each other.

The invention discloses a multi-component recombination current flashy flow block relay for identifying excitation flashy flow of a transformer, aiming at solving the problems of differential protection malfunction caused by excitation flashy flow during air delivery and rapid action of differential protection when a turn-to-turn fault occurs. The invention provides a multi-component recombination current flashy flow block relay which consists of sample current selection of the flashy flow, three-time harmonic infeed scheme, an electric scheme of the current harmonic ratio and self-adaptive flashy flow block criteria, wherein the action logic diagram of the relay is shown in the attached figure. The test result indicates that the relay has good sensitivity, safety and rapidness. The invention also discloses a recombination current flashy flow judgment method.

The invention discloses a tool and method for replacing a shaft bushing at the big end of a connecting rod of a diesel engine of a million-kilowatt-class nuclear power plant. The replacing tool comprises a main connecting rod-side piston positioning and adjusting tool and an auxiliary connecting rod-side piston connecting rod component positioning tool, wherein the auxiliary connecting rod-side piston connecting rod component positioning tool is arranged between the upper surface of a balancing block of a crankshaft of the diesel engine and the lower bottom surface of an auxiliary connecting rod cylinder; and the main connecting rod-side piston positioning and adjusting tool extends into a main connecting rod cylinder, and a jacking part on the main connecting rod-side piston positioning tool is used for jacking up a piston in the main connecting rod cylinder so as to facilitate the separation of a main connecting rod from an auxiliary connecting rod. By adopting the tool and method for replacing the shaft bushing at the big end of the connecting rod of the diesel engine, the disassembly of affiliated pipelines of related cooling water, lubricating oil, fuel oil and other systems, the removal of a cylinder head component of the diesel engine, the integral lifting-out of a piston connecting rod component and other conventional replacement works are not required when the shaft bushing is replaced, and a crankshaft bearing is directly replaced from an observation hole, thereby greatly saving the working time, obviously shortening the maintenance working period on the premise of not reducing the reliability, and lowering the maintenance cost.

The invention discloses a novel steering mechanism capable of realizing partial steer-by-wire function. The novel steering mechanism comprises a steering wheel, an electromagnetic contracting brake, asun gear, a plurality of planetary gears, a gear ring, a planetary carrier, a worm and a decoupling driving mechanism, wherein the steering wheel is fixedly connected with a steering column; the electromagnetic contracting brake is coaxially and fixedly connected with the steering column; the sun gear is coaxially and fixedly connected with the electromagnetic contracting brake; the planetary gears are circumferentially and uniformly arranged on the outer side of the sun gear and are in meshed transmission with the sun gear; the gear ring is arranged concentric with the sun gear, the inner ring is in meshed transmission with the planetary gears, and the outer ring is provided with worm gear teeth; the planetary carrier is rotationally connected with gear shafts of the planetary gears in the circumferential direction, and a tubular column structure vertically extends from the center of one side, away from the steering wheel, of the planetary carrier and is used for being connected witha steering gear; the worm is in meshed transmission with the worm gear teeth of the outer ring of the gear ring; and the decoupling driving mechanism is connected with the worm and is used for driving the worm to rotate. A control method of the novel steering mechanism capable of realizing the partial steer-by-wire function is further provided.

The invention aims to provide an epoxy thermosetting resin composition that can be bent and have a film insulation layer, has reliability and processing characteristic that compare favourably with halogen-free FR-4, and is low in fluidity in a vacuum pressing process. The thermosetting resin composition includes (a1) liquid epoxy resin; (a2) solid epoxy resin; (b) aromatic diamidogen compound with ether group; (c) solvent soluble polyimide resin with weight-average molecular weight below 50000; and (d) phenoxy resin. The amount of (c) solvent soluble polyimide resin with weight-average molecular weight below 50000 and (d) phenoxy resin is more than 15 parts by weight and less than 100 parts by weight when the total amount of the (a1) liquid epoxy resin, (a2) solid epoxy resin, (b) aromatic diamidogen compound is arranged to be 100 parts by weight.

The invention provides a reading-writing conversion system and a reading-writing conversion method of a phase change memory. The reading-writing conversion system comprises a reading-writing pulse generation module, an address latch module, a reading module, a writing module, a data latch module and a data comparison module, wherein the reading-writing pulse generation module is used for generating a reading pulse and a writing pulse, the address latch module is used for latching a target address to be operated, the reading module is used for data of a phase change storage unit of the target address, the writing module is used for writing the data to be written into the phase change storage unit of the target address, the data latch module is used for latching the data of the target address read by the reading module or the data of the target address written by the writing module, and the data comparison module is used for comparing the data of the target address and the data to be written. The phase change memory is automatically switched between a speed priority mode and a power consumption priority mode by controlling a reading-writing sequence, so that a purpose for maximally reducing the operation power consumption of the memory in the application field with power consumption priority on the premise that the system reliability of the memory is not reduced.

A method based on fault transient process for coordinating operating characteristics of a differential relay comprises the steps that: the current sampling values of braches of each bus are obtained through AC (alternating current) sampling; the positions of switches on the branches of each bus are obtained; differential current on two buses, differential current on the bus I, and small differential current on the bus II are calculated according to bus connecting manner and the positions of the switches on every branch; and if the buses are in the dividing sate, the large-differential proportional brake coefficient is reduced to 0.3. The method can ensure that bus can act reliably at every area where fault happens.

The invention discloses an IGBT (Insulated Gate Bipolar Translator) module which comprises a base plate, a plurality of IGBT chips and at least one backward diode arranged on the base plate and a first conducting connection plate and a second conducting connection plate arranged on the base plate, wherein the first conducting connection plate and the second conducting connection plate are electrically connected with each IGBT chip and the positive pole and the negative pole of the backward diode respectively and correspondingly so as to be connected with the IGBT chips and the backward diode in parallel, and preset positions between both ends of the first conducting connection plate and between both ends of the second conducting connection plate are respectively provided with an electrode leading-out part so as to lead out an installation electrode of the IGBT module. The invention can enable the IGBT module to provide large power with high reliability.

The invention provides a low and high frequency high sensitivity RFID passive label and a batch production method thereof. The passive label comprises tapped coil composing a label double sensing circuit, a tuning capacitor C12, a RFID chip, wherein, with a given card area and external coupling environment, common coil is substituted by the tapped coil, a label circuit is a double sensing circuit; connection topology relations of the tapped coil, the RFID chip and the tuning capacitor C12 are that: the RFID chip connects an initiating terminal of the coil and intermediate tap, and the tuning capacitor C12 connects the initiating terminal of the coil and a termination terminal of the coil. According to the invention, sensitivity and read-write distance of the label are raised.

The invention discloses a debugging method of an imaging system. The invention relates to the technical field of aerospace application imaging. The problem that effective data and invalid data are difficult to distinguish due to the fact that invalid data zero clearing operation does not exist in a detector and image data output in an invalid data stage are random in an existing imaging system issolved, and for the risk that a refreshing chip connected with an FPGA is not powered on and has latent conduction, unused pins are set to be at a low level; the pins which need to be connected are connected with resistors in series, and possible interference is filtered out by using capacitors; and the influence of dive-through can be reduced, and meanwhile, the application reliability is not reduced. Aiming at possible image blurring caused by temperature change of the detector, a secondary training operation method is provided, and image blurring is avoided. For the situation that no invalid data zero clearing operation exists in the detector, image data output in the invalid data stage is random, and valid data and invalid data are difficult to distinguish; pixel-by-pixel lightening and extinguishing are adopted, so that effective data positions can be accurately checked.

The invention discloses a pre-charging circuit. One end of a resistor R1 is connected with a single chip microcomputer (1), and the other end of the resistor R1 is connected with a base electrode of an audion Q1. One end of a resistor 2 is connected with a base electrode of the audion Q1, and the other end is grounded. One end of a resistor R3 is connected with a collector electrode of the audion Q1, and the other end of the resistor R3 is connected with a voltage to current converter (VCC). An emitting electrode of the audion Q1 is grounded. One end of a resistor R4 is connected with the collector electrode of the audion Q1, and the other end of the resistor R4 is connected with a base electrode of an audion Q2. One end of a capacitor C1 is connected with the collector electrode of the audion Q1, and the other end of the capacitor C1 is connected with the base electrode of an audion Q2. One end of a resistor R5 is connected with a collector electrode of the audion Q2, and the other end of the resistor R5 is grounded. One end of a resistor R6 is connected with an emitting electrode of the audion Q3, and the other end of the resistor R6 is connected with a grid electrode of a transistor T1. One end of a resistor 7 is connected with the grid electrode of the transistor T1, and the other end of the resistor 7 is grounded. One end of a resistor R8 is grounded, and the other end of the transistor T1 is connected with a source electrode of the transistor T1. The pre-charging circuit aims at overcoming the shortcomings in the prior art and is simple and reliable in structure and low in cost.

The invention relates to a newly increased cantilever beam frame steel armored anchor-pulling-method structure. The newly increased cantilever beam frame steel armored anchor-pulling-method structure comprise frame beams, frame columns and cantilever beams, wherein the frame beams and the frame columns are of concrete structures, the frame beams are provided with beam outside armored steel, the frame columns are provided with column outside armored steel, the beam outside armored steel is fixedly connected with the column outside armored steel, steel anchoring plates are fixedly connected to the outer side of the column outside armored steel, rib embedding holes are formed in the steel anchoring plates, the steel anchoring plates and the frame columns are fixed by adopting high-strength bolt embedded bars in an opposite-pull mode, the cantilever beams are fixedly connected with the steel anchoring plates, and the bottoms of the cantilever beams are fixedly connected with the column outside armored steel through diagonal supports. In addition, steel stay ropes can be arranged for further reinforcement. Outside armored steel trusses, horizontal embedded bars, the steel anchoring plates, the cantilever beams, the diagonal supports and the steel stay ropes form a statically indeterminate structure system, the members of the system are mutually connected and are jointly stressed to form multiple bearing protection lines, and multiple contradiction of a newly increased cantilever beam structure are solved.

The invention relates to a current differential protection method adopting the Apollonius theorem. The current differential protection method comprises the following steps: acquiring phasors of three-phase current on two sides of a power transmission line as shown in the specification; mapping a current differential protection criterion on a current complex plane; according to the Apollonius theorem, adjusting the position of an acting circle to obtain the current differential protection criterion on the current complex plane; and converting the current differential protection criterion to a phasor form. According to the technical scheme provided by the invention, a current differential protection movement range is determined by using the Apollonius theorem, so that the range of a current differential protection acting region is expanded, and the sensitivity of current differential protection is improved when faults occur in the region; and meanwhile, the reliability of the current differential protection is not reduced when faults occur outside the region.

Disclosed is a package board wherein a malfunction or error occurs even when a high-frequency IC chip, in particular an IC chip of more than 3 GHz is mounted. A conductor layer (34P) having a thickness of 30 mum is formed on a core substrate (30), and a conductor circuit (58) having a thickness of 15 mum is formed on a interlayer resin insulating layer (50). By forming the conductor layer (34P) thick, the volume of the conductor itself is increased, thereby reducing the resistance. In addition, the power supply capacity to the IC chip can be improved by using the conductor layer (34) as a power supply layer.

The present invention discloses an energy-saving inversion boosting complete device and method for photovoltaic generation. The device comprises a photovoltaic grid-connected inverter, a boosting power transformer and a switch unit. The photovoltaic grid-connected inverter is configured to convert direct current electric energy to alternating current electric energy, achieve a function of a voltage-adjustable alternating current power supply and emit a switch control command to the switch unit; the boosting power transformer is configured to boost the alternating current electric energy outputby the photovoltaic grid-connected inverter to a high voltage and then send the high voltage to a power grid; the switch unit is configured to conduct and disconnect the electrical connection betweenthe boosting power transformer and the power grid, detect voltage amplitudes and waveforms of the power grid side and the boosting power transformer side and perform feedback of the voltage amplitudes and waveforms to the photovoltaic grid-connected inverter. The energy-saving inversion boosting complete device and method for photovoltaic generation can greatly meet the requirement that the transformer is quitted at night in the photovoltaic power generation, can save energy consumption, can reduce the electricity charge, can timely input the transformer prior to generation without reductionthe reliability of the device life, and is ingenious in conception, convenient and rapid in implementation and good in application prospect.

A cascading method for the power amplifier backup loops of a communication satellite transponder is provided. By cascading two power amplifier backup loops, the backup loops on different decks are connected. The sharing of the backup power amplifier in the two backup loops is realized, the efficiency of backup using is improved, and the reliability of the transponder is improved.

The invention discloses a >USB TYPE-C short-type forward and inverse plugging connector female seat which comprises a housing main body, an extension housing arranged in the housing main body, and a middle clamping piece, an upper row of terminal assembly, a lower row of terminal assembly and an inner sleeve plastic frame which are arranged in the extension housing, wherein the middle clamping piece is arranged between the upper row of terminal assembly and the lower row of terminal assembly. The inner sleeve plastic frame is arranged on the peripheries of the upper row of terminal assembly, the middle clamping piece and the lower row of terminal assembly and covers and fixes the upper row of terminal assembly, the middle clamping piece and the lower row of terminal assembly as an integral body. The mechanical strength of each assembly in the horizontal direction is strengthened, and the pull force or pressure of each part generated in the plug-in process by a user is directly transmitted to the extension housing and the housing main body. The invention further discloses a preparation method of the USB TYPE-C short-type forward and inverse plugging connector female seat. According to the invention, the length of an existing USB TYPE-C short-type connector is greatly shortened, and the problems of loose connection and poor sealing performance after a plurality of times of plugging are solved.

The invention discloses a same-frequency multi-waveform high-capacity multi-carrier modulation method. The high-capacity multi-carrier modulation method comprises the following steps of: expanding various frequency sub-carriers into m same-frequency multi-waveform sub-carriers, which are same in frequency and different in waveform, namely, expanding r sub-carriers into r*m sub-carriers; adopting N sub-carriers while transmitting N-channel signals, wherein frequency resources occupied by r=N/m sub-carriers are only occupied; performing scale and time shifting conversion of the nth sub-carrier; and demodulating signals modulated on the sub-carriers at a receiving end through a reconstruction algorithm in a compressive sensing theory, reducing inter-carrier interference by utilizing a matching tracking algorithm, and realizing demodulation of signals. According to the same-frequency multi-waveform high-capacity multi-carrier modulation method disclosed by the invention, under the condition that the bandwidth is constant, various sub-carriers are expanded into coherent sub-carriers, which are same in frequency and different in waveform (same-frequency multi-waveform); interference of same frequencies between carriers is eliminated at the receiving end by utilizing the reconstruction algorithm; therefore, the number of the sub-carriers is enlarged; and the spectrum utilization rate and the symbol transmission rate are effectively increased.

The invention discloses an interconnecedt gate line and a manufacturin method which are Applicable solar cells and interconnected modes, the method includes a metal grid frame disposed between regionswhere two adjacent battery sheets are stacked with respect to each other, The metal grid wire frame comprises a main frame vertically connected with the parallel battery sheet metal sub-grid electrodes, a longitudinal sub-frame parallel to the main frame and not connected with the battery sheet sub-grid, and a transverse sub-frame connected with the main frame and the longitudinal sub-frame on both sides. Then, the front surface of one solar cell sheet and the back surface of the other solar cell sheet are connected through a conductive adhesive filled in a rectangular frame formed by metal grid lines to form an interconnected solar cell. The fabricated metal grid frame has certain blocking effect on the conductive adhesive, and can prevent or reduce the conductive adhesive from overflowing when the battery sheet is overlapped, thereby avoiding the short circuit of the battery sheet caused by the formation of the series resistance.

The invention belongs to the technical field of power communication, and particularly relates to a method for realizing power communication slice selection and trusted transmission based on a 5G network. The method comprises the following steps that a power terminal is registered to a 5G network; the power terminal registered to the 5G network sends the data to different 5G network slices; and selection algorithm matching is performed on the slices at a receiving end according to the type of the data packet until the slices are received or discarded. According to the invention, the transmission reliability of the relay protection data in the 5G network can be improved, the standard that the transmission reliability is far higher than 99.999% is achieved, the high time delay occurrence frequency of the power data transmitted in the 5G wireless network is reduced, the 5G wireless network can meet the requirements of communication between relay protection terminals for time delay and packet loss rate, a wired communication bearer relay protection service is replaced, the deployment cost and the operation and maintenance difficulty are reduced, the network utilization efficiency is improved, network resources are utilized to the maximum extent, and meanwhile safe operation of electric power communication is improved.

The invention discloses a method for addressing cross-chain coupling. The method comprises the steps that a local chain block and transaction information located on the local chain block are set; after the block processes the out-of-chain transaction, the establishment of an out-of-chain negative account list is completed, and negative account details are checked; the local chain block queries anoff-chain node having a transaction with the local chain block and an off-chain block where the node is located, establishes node connection, sends a negative account list and requests confirmation ofthe off-chain block; after the out-of-chain block confirms the negative account list, the negative account is cleared, and when the local chain block checks that the negative account is zero, out-of-chain transaction processing is recovered. The invention further provides a system for solving the cross-chain coupling, the system comprises a freezing manager, an off-chain verification manager anda credit granting manager, and the problem that in the cross-chain transaction, the intra-chain transaction and the cross-chain transaction have reliability at the same time, and meanwhile the intra-chain transaction and the cross-chain transaction are decoupled is effectively solved.

The invention relates to an asynchronous motor controllable compensation type full-torque energy-saving soft start device. In the device, an air switch, a three-phase starting capacitor and the alternating-current input end of a three-phase rectifier bridge are connected in series and then are connected in parallel with leads of each phase of a controlled motor. A three-phase compensation capacitor is connected between a three-phase starting capacitor and a three-phase rectifier bridge in parallel, and the direct-current output end of the three-phase rectifier bridge, the power resistor, the collector electrode and the emitting electrode of a power transistor are sequentially connected in series. The control circuit is connected to the two ends of the three-phase rectifier bridge in parallel, and the signal output end of the control circuit is connected with the base electrode of the power transistor. Compared with the prior art, the device has the advantages that the starting currentis inhibited, and the starting torque is not reduced, the voltage fluctuation of a power grid can be effectively overcome, harmonic interference is avoided, the power factor of the motor is increasedto about 1, the line loss is reduced to the maximum extent.