208results about How to "Little impact on operation" patented technology

The invention provides a forwarding method used for constructing multi-hop routing in a wireless self-organizing network, which is based on an ARP proxy system and a mixed routing system. The method comprises the following steps that: a monitoring module of each node monitors each message sent and received by the node in real time; adjacent hosts interact respective routing information in a single-hop range in real time; each node stores a partial or complete topology table of the whole network; when a certain node of the network sends an ARP request to a node which is not directly connected with the certain node, the certain node searches for a next-hop node and sends a routing detection message to the next-hop node according to a routing list; and if the route is reachable, the detection message is transmitted to a target node step by step and returns a routing reachable message, and ARP proxy tables are arranged at various nodes along the route, so a multi-hop route is established. The invention also comprises a method for maintaining and updating the route through modification of network topology detection. The invention also comprises a device used in the network, and describes a complete communication system shown in graph 1.

The invention discloses an inductance regulating switch capacitor-type passive clamping soft switching high-gain boost-type converter which comprises a power switch tube, a clamping diode, a rectification diode, a coupling inductor and a regulating inductor and has the following basic functions: the zero-current turning-on of the power switch tube is realized through utilizing the leakage inductance of coupling inductance; the soft turning-off of the power switch tube and lossless transfer of leakage inductance energy are realized through the passive clamping circuit consisting of the clamping diode and a clamping capacitor; the high-gain output of the converter is realized through utilizing a second winding of the coupling inductor and the switch capacitor; the turn ratio of the coupling inductance is prevented from being over-high by utilizing the inductance to regulate and output voltage range; the volume of a magnetic element is reduced by utilizing the bidirectional operation of the magnetic element; the converter is simple in structure, is convenient to control; and loss energy elements are not arranged in the circuit, and the efficiency can be improved. The inductance regulating switch capacitor-type passive clamping soft switching high-gain boost-type converter provided by the invention is mainly applied to the field of renewable energy source and novel energy source power generation with low working voltage level, such as photovoltaic power generation and fuel battery power generation.

The invention discloses a urea-solution-based SCR (selective catalytic reduction) flue gas denitration process and device. According the process, pyrolysis air is pumped from the outside or a second air channel of a boiler, then is pressurized by a first fan and heated to 350-700 DEG C by a pyrolysis air heater arranged in a boiler hearth or a tail air channel, and the heated pyrolysis air enters a pyrolysis reaction air channel together with fresh air; urea solution is sprayed into the pyrolysis air channel by an atomizing spray gun and the atomized urea solution is pyrolyzed into ammonia gas in the pyrolysis air channel; and after being discharged out of the pyrolysis air channel, the ammonia gas is sprayed into boil flue gas via ammonia spraying grilles to participate in the SCR reaction in an SCR reactor arranged in a tail flue of the boiler. the urea-solution-based SCR flue gas denitration process and device have the advantages of high safety, simple structure and easiness in implementation.

The invention provides a battery energy storage system for peak load shifting and a control method thereof. The system comprises M energy storage modules, wherein M energy storage modules are mutually connected in parallel, each energy storage module comprises a battery pack and a bi-directional converter, the direct current end of the bi-directional converter is connected with the battery pack, the alternating current end of the bi-directional converter is connected with a power grid, and M is the integer greater than 1; and a monitoring module, wherein the monitoring module is respectively connected with the battery pack and bi-directional converter in each energy storage module, the monitoring module is used for obtaining the charging and discharging power demand curve and current stress optical coefficients (SOC) of M battery packs, and performing the start and stop control and power distribution to M energy storage modules according to the charging and discharging power demand curve, the current SOC of M battery packs and the power-efficiency curve of each energy storage module. The system is formed by connecting multiple energy storage modules in parallel, so the peak load shifting capacity is enhanced, the stability and safety of the power grid are obviously improved, and the redundancy and applicability of the system are improved.

The invention relates to a method for dyeing an all-zirconium tooth by using a film. The method comprises the following steps of: producing a polyethylene (PE) film with stronger autohension by taking polyethylene as a main raw material by a multi-layer extrusion process; and printing or print-coloring the film, shearing the colored film of which the size is matched with that of a precolored dental crown and wrapping on the surface of the dental crown, heating to ensure that coloring particles are transferred to the surface of the dental crown to be dyed, sintering, polishing, and glazing to finish the whole dyeing process and obtain a final restoration. The invention has the advantages that: the method is easy to operate, slightly affects the transparency of zirconia dental crowns, and can meet aesthetic requirements of customers on zirconia all-porcelain teeth more easily; the coloring mode is more flexible, and the targeted color printing can be performed according to the requirements of the customers; by the method, the color difference between dental crowns can be intuitively reflected immediately, and the problem that final colors of staining fluid products can be seen only after the staining fluid products are sintered is solved; and the phenomenon of porcelain fracture is avoided, and the safety factor is high.

The invention discloses a current limiting type UPFC system design method. The two sides of a current limiting type UPFC system are connected to the same alternating-current bus power source, the parallel connection side is connected with a power system through a parallel transformer Tsh, the series connection side of the current limiting type UPFC system and a current limiter are connected together through the secondary side of a series transformer Tse, and connected to the power system through the primary side of the series transformer Tse, the series connection side and the parallel connection side of the UPFC system are connected through a direct-current capacitor C, and an outlet of a series connection side filter inductor of the UPFC system is connected with a capacitor overvoltage protection circuit in parallel. The current limiter comprises a half-controlled rectifier bridge composed of six thyristors, and a follow current bridge composed of two thyristors, wherein the follow current bridge is connected with a current-limiting inductor in parallel; the parallel connection side of the UPFC system is connected with the parallel transformer Tsh through a parallel connection side filter inductor.

The invention relates to a harmonic impedance measurement apparatus of an electric power system. A transformer T is connected with a public electric network P; the harmonic impedance measurement apparatus NHID is connected to an A phase, a B phase and a C phase of a low-voltage side of the transformer T. The NHID is composed of a harmonic injector ID, a control unit CD, a power source unit SU and a measurement calculation unit MCM; the harmonic injector ID includes a direct-current energy storage capacitor C, large-power electronic power switches from S1 to S6, and a three-phase boosting transformer Ts1. And the whole injection process is completely controllable. According to the invention, precise measurement and calculation can be carried out to obtain the harmonic impedance of the system and reliable harmonic impedance parameters can be provided for harmonic treatment.

The invention discloses an urban rail transit LTE-M network system and a fault monitoring method. The system comprises an LTE network layer and a vehicle-mounted access layer, the LTE network layer comprises an A core network, a B core network, base station equipment and a combiner. Transmission data is transmitted to the combiner through the dual-core network and the base station device. The vehicle-mounted access layer comprises a TAU arranged on a train and used for data transmission between a train and a dual-core network. More than two TAUs are respectively arranged in a head carriage anda tail carriage of the train, a part of TAUs in each carriage are connected with one core network, the other part of TAUs in each carriage are connected with the other core network, and parallel datatransmission is carried out between each TAU in each carriage and the dual-core network. The method has the advantages that the structure is simple, the cost is low, the redundancy is high, single-point faults such as a combiner can be reduced, the influence on train operation under the extreme network fault working condition is reduced, and safety and reliability are achieved.

The invention provides a novel zero-sequence current compensator. An inverter bridge is connected between a neutral point and a neutral line of a zigzag transformer; and a current output by the inverter bridge is injected into a system through a low-impedance zero-sequence current channel which is provided by the zigzag transformer so as to compensate for a neutral current. A controllable rectifier module is connected with the secondary side of the zigzag transformer to supply a direct-current power supply to the inverter bridge, and thus, the two-way flow of energy is realized and the problem of direct-current voltage rise caused when the compensator absorbs active power is solved. The novel zero-sequence current compensator has a series of advantages of good compensation effect, low direct-current voltage, small switching stress, few influences of system parameters, flexible control, few influences on system operation and the like.

The invention provides a crawler travelling stacker. The crawler travelling stacker comprises a rack as well as a feeding device, a discharging device and a control system which are arranged on the rack. The crawler travelling stacker is characterized in that the feeding device and the discharging device are connected through a slip material transition bin; the slip material transition bin is arranged on the rack; a travelling mechanism is arranged at the bottom of the rack and served as a crawler travelling mechanism; the feeding mechanism comprises a fed material lifting mechanism; the discharging mechanism comprises a cantilever pitching mechanism and a cantilever slewing mechanism; and the control system is used for controlling the travelling mechanism, the fed material lifting mechanism, the cantilever pitching mechanism and the cantilever slewing mechanism. The crawler travelling stacker provided by the invention can directly receive materials from a high-capacity dump truck, so as to improve the operational capability; by adoption of the crawler travelling mechanism, the crawler travelling stacker can move and change directions flexibly and stack the materials at any position of a site, and thus the utilized space of the site is enlarged; and the crawler travelling stacker can adapt to stacking sites with relatively complex working conditions, can pass through a place where bulk materials are stacked, is relatively strong in climbing capability, and can adapt to various working conditions of the stacking sites.

The invention discloses a data real-time processing method and system. The method is applied to the data real-time processing system. The method comprises the steps of obtaining source system data change information; performing first data processing on the data change information in real time according to a first preset processing policy to form processed first data; loading the first data in a memory database; and performing second data processing on the first data in the memory database in real time according to a second preset processing policy based on a data processing demand to obtain a data processing result.

The invention provides a Web management system for a power LTE wireless terminal and a terminal authentication method thereof. The Web management system comprises a Web server. The Web server comprises a terminal identity authentication module and a CGI (Common Gateway Interface) program module. The Web server carries out terminal identity authentication on a CPE terminal through the terminal identity authentication module, so the CPE terminal can access a power LTE wireless private network. A private key and a certificate generated by an SSL (Secure Socket Layer) tool are stored in the Web server. A user accesses an HTML static webpage of the Web server in an HTTPS mode based on an SSL protocol through a client Web browser, and further the CGI program module is triggered to carry out a corresponding function unit program. According to the system and the method, the secure embedded Web server is established through utilization of the common gateway interface (CGI) and the secure socket layer (SSL); terminal information query and terminal parameter configuration functions are realized on a power LTE-1.8GHz wireless CPE terminal; and the system and the method adapt to a power service device well and have relatively good application prospect.

The invention discloses a method for configuring a bus bar of an aluminum electrolytic bath. The current in the electrolytic bath flows out from a power-in bus bar through a negative soft bus bar (1) to a zigzag bottom bus bar (3), a bottom through bus bar (4) and a side bus bar (5) respectively though a power-in negative bus bar, then enters a side bus bar through the zigzag bottom bus bar (3) and finally enters 4 pillar bus bars (7) of a downstream bath through the bottom through bus bar (4) and the side bus bar (5) respectively; and the current also flows out from a power-out bus bar through the negative soft bus bar (1) to the 4 pillar bus bars (7) of the downstream bath through a power-out negative bus bar (6). In the method, in an overall consideration of technology and economy and based on the configuration form of negative and positive pole numbers of the whole bath and the power-in way, a scheme for the magnetic field compensation of large aluminum electrolytic baths is more rationally designed to achieve a good magnetic field compensation effect and save the using amount of the bus bar around the baths so as to overcome the adverse factors in the conventional electrolytic baths.

Disclosed is a novel rubber-tyred mobile ship-loader, relating to a device for loading ships at docks. The left end of a walking mechanism (1) of the ship-loader is connected to the front end of a belt conveyer (2), and the right end of the walking mechanism (1) is connected to a middle part of the belt conveyer (2). A feeding device (4) is arranged above the front end of the belt conveyer (2), and a discharging cylinder system (5) is arranged on the tail end of the belt conveyer (2). A hydraulic control/hydraulic station (6) and an electrical device (7) are arranged on the walking mechanism (1). The novel rubber-tyred mobile ship-loader of the invention can increase the dock utilization rate and improve the average loading speed significantly. An electricity distribution system of the ship-loader adopts a dual-mode that one is adopting a mobile power station and the other is adopting a cable reel to receive shore power, which enables the whole system to be completely independent.

The invention relates to a memory processing method and device, electronic equipment and a computer readable storage medium. The method comprises the steps of obtaining a recoverable memory page occupied by a to-be-processed application; obtaining a recovery ratio corresponding to the to-be-processed application; determining the recovery quantity according to the recoverable memory pages and the recovery proportion; and selecting the memory pages with the recovery number from the recoverable memory pages for recovery. According to the memory processing method and device, the electronic equipment and the computer readable storage medium, it can be guaranteed that under the condition that the memory of the whole system becomes large, the negative influence on each application is minimum, andthe balance between recovery and operation of the memory of the to-be-processed application is kept.

The invention discloses a power transmission line broken line determining method based on semaphore transmission; the method comprises the following steps: 1, respectively collecting three-phase voltage and three-phase current on two sides of the power transmission line, and determining whether certain-phase currentless happens on either side or not, or certain-phase as capacitance current; 2, if said conditions happen on a random side, sending the certain-phase currentless or capacitance current monitoring signals to the other side; 3, allowing the other side to receive the certain-phase currentless or capacitance current monitoring signal, determining whether the same phase has currentless condition or the same phase as capacitance current or not, and if yes, determining the power transmission line as the phase broken line. The method can help relay protection to effectively cut off broken line faults in a heavy current grounding system.

The invention provides a flue gas SCR denitration efficiency-improving system and method. The method includes: spraying an oxidant into a flue between a boiler hearth outlet and a SCR denitration catalyst to partly oxidize NO in flue gas into NO2; enabling NO2 to enter a SCR denitration system to contact with a denitration catalyst to be in quick SCR denitration reaction at the present of NH3. SCRdenitration reaction velocity is accelerated, and denitration efficiency of an original SCR denitration system is improved. The system comprises an oxidant injection system and a SCR catalytic reducing denitration system, the oxidant injection system comprises an oxidant tank, an oxidant pump, a metering module, a dilution system, a distribution module and a nozzle system, and the SCR catalytic reducing denitration system comprises a SCR denitration reaction tower connected on a boiler flue gas outlet and a catalyst arranged in the SCR denitration reaction tower. The method and the system canimprove denitration efficiency of existing flue gas SCR denitration systems and are suitable for flue gas SCR denitration systems of many industries.

The invention provides a satellite navigation interference source passive positioning method based on multi-platform cooperation. Under the condition of networking cooperation of a plurality of combatplatforms, satellite navigation interference source orientation data obtained by the plurality of combat platforms are shared, and the position of a satellite navigation interference source is calculated by adopting a multi-platform passive direction-finding cross positioning technology, so that effective battlefield information is provided for subsequent combat destroy, and the combat performance of each combat unit is improved. The method is good in concealment, and position information of the device is not exposed; the problems that calculation dead angles exist in double-platform positioning and false points are solved can be effectively avoided, and real-time three-dimensional positioning can be carried out on an interference source; the data volume is greatly reduced, the calculation amount is smaller, the calculation capability is saved, and the influence on the normal operation of other functions is very small; false points possibly occurring in positioning calculation are effectively reduced, the calculation pressure of combat member platform equipment is reduced, the utilization efficiency of battlefield networked information data is enhanced, and the accuracy of combatinstructions is improved.

The invention provides a coarse orbit spacecraft and Beidou No.3 satellite inter-satellite link signal bidirectional capture method, which comprises the following steps that: an inter-satellite link module of a coarse orbit spacecraft is switched to a signal large-range capture working mode, and the coarse orbit spacecraft captures an inter-satellite link signal of a Beidou satellite in one direction; the coarse orbit spacecraft obtains a one-way precise distance measurement value of the Beidou satellite, and an orbit determination algorithm and time synchronization algorithm module of the coarse orbit spacecraft processes the one-way precise distance measurement value to obtain a precise orbit of the coarse orbit spacecraft and a precise clock error of the coarse orbit spacecraft; the inter-satellite link module of the coarse orbit spacecraft is switched to a signal compensation transceiving working mode, and when the inter-satellite link module of the coarse orbit spacecraft performssignal transceiving, the arrival time of signals is calculated in real time according to the precise orbit of the coarse orbit spacecraft and a pre-injected coarse orbit error, and parameter compensation is performed on receiving, capturing, modulating and sending of inter-satellite link signals, and bidirectional capture of inter-satellite link signals between the coarse orbit spacecraft and theBeidou satellite is automatically completed.