41results about How to "Easy to plug and play" patented technology

The invention relates to a robust autonomous control method for the bus voltage of the DC micro grid. A nonlinear interference observer, DC bus voltage sagging control and voltage / current double-loop control are combined in the method. The method comprises that a DC-DC current transformer model is established; the nonlinear interference observer is used to track output current of the DC-DC current transformer model, and a band pass filtering link based on a second-order general integration link is used to filter output results of the observer; in DC bus voltage sagging control, the output results of the nonlinear interference observer serve as the output current; and in voltage / current double-loop control, perturbation current of the output results of the nonlinear interference observer is used for feedforward control. The method can be used to realize peer-to-peer control and autonomous operation of the DC micro grid, effectively improves dynamic response of the control system, inhibits fluctuation and impact of transient DC bus voltage, and is conducive to expansion and plug-and-play of distributed power supplies and loads in the DC micro grid.

The invention discloses a PCB design layout audit device, the PCB design layout audit device comprises a device storage, the device storage is provided with the an automatic DFM audit module and a man-machine interaction audit module; the automatic DFM audit module comprises a line audit module, a via hole audit module, a copper sheet audit module, a silk screen audit module, a solder resist audit module and a steel mesh audit module; the man-machine interaction audit module comprises a netlist audit module, a layout audit module, a signal audit module, a structure IDF output module, a device height reporting module, a locating and wiring related interaction audit module, a silk screen related interaction audit module and a production related interaction audit module. The audit system is independently prepared into the electronic product device to be conveniently used by the customers in a plug and play mode, and the audit system is not limited by the mounting computer anymore. The Ukey device is inserted into the computer for the corresponding engineer and the PCB design audit can be executed according to the requirement from the engineer.

The invention relates to an Ethernet type LED display screen control system which is characterized in that 100M Ethernet technology is drawn into an LED control system so that the data transmission in the interior of the whole system is transmitted in a 100m Ethernet mode and the whole control system is more flexible and convenient to use and particularly suitable for occasions with special requirements. The control system adopts physical layer protocol of 100M Ethernet; the control system comprises a system controller and a module controller; the system controller comprises a plurality of independent 100 M Ethernet interfaces; each 100 M Ethernet interface is independently controlled by a field programmable device; the model controller comprises two network interfaces, an IN port for receiving data and loading autologous field programmable device and an OUT port for transmitting data to a module controller of next level.

The invention discloses a double-layer steel sheet pile combined enclosure structure and a construction method thereof, relates to the technical field of geotechnical engineering design and construction, and solves the problems of enclosure deformation increase, leakage instability and other risks caused by insufficient pile body rigidity of an existing steel plate pile. The double-layer steel sheet pile combined enclosure structure comprises double layers of steel sheet piles which are arranged on the periphery of a foundation pit and are tightly attached to the axes in the width direction ofthe double layers of steel sheet piles and are arranged parallelly or symmetrically, and a combined reinforcing layer which is formed by grouting and reinforcing soil between the double layers of steel sheet piles. The construction method comprises: the outer-layer steel sheet piles and the inner-layer steel sheet piles are inserted into the periphery of the foundation pit in sequence, and then asoil body between the inner-layer steel sheet piles and the outer-layer steel sheet piles is grouted and reinforced to form the combined enclosure structure; then a foundation pit soil body is excavated in sequence, all horizontal supports are constructed until reaching the pit bottom, an underground structure is constructed, support replacing components are arranged according to design requirements, and all the horizontal supports are dismantled; underground structure construction is completed, the soil body is backfilled to the natural floor elevation, the double layers of steel sheet pilesare pulled out, and pile pulling gaps are grouted and filled.

The invention discloses an interplanetary internet cluster networking method. The method comprises the steps that an interplanetary internet structure is set up according to the composition and the function of each part in the whole interplanetary internet network; all nodes in the network are divided into different clusters adopting independent networking route policies according to the property, the function, the area position and the task requirement, and therefore a cluster networking model can be set up; the boundary nodes are selected, a control link is separated from a service link, and inter-domain control information transmission and intra-domain control information transmission are separated; a planet network sub-layer in agreement with the international standard, a backbone network sub-layer possessing the same protocol and the same function on all the nodes, and a binding layer storing and forwarding binding packages among the nodes are constructed, and a network protocol stack structure of the cluster networking model is formed. According to the interplanetary internet cluster networking method, the coupling degree is small, the network nodes can be used instantly after being inserted, and the network management control efficiency is high.

An omnibearing vision system for robot based on general-purpose serial bus features that a multi-curve viewer is champed to a transparent protective cover, a camera is installed to the base in such amanner that its lens can be inserted in the transparent proctective cover for aligning it with the viewer, and an image acquiring box connected to the camera is connected with the background computerand the robot via general-purpose serial bus. Its advantages are plug-and-play function, hot attach and detah function, and high reliability and stability.

The invention discloses distribution network communication optimization based on extended IEC 60870-5-104. The method comprises the steps that (1) an ACSI client establishes abstract services according to corresponding needs, wherein data updating and remote control operation are comprised; (2) SCSM automatically generates an extended XML-based 104 file according to the services described by the ACSI; (3) the size of the 104 file is determined, and if the message is too large, a Huffman-LZMA compression module is enabled, otherwise normal communication is carried out; (4) an ACSI server acquires the size of the 104 file to determine whether the 104 file is compressed, and if the 104 file is compressed, a Huffman-LZMA decompression module is enabled, otherwise normal communication is carried out; and (5) the ACSI server carries out related services according to request parameters. According to the invention, the generated extended 104 file is selectively compressed; distribution network communication optimization based on extended IEC 60870-5-104 is realized; and in particular, a Huffman-LZMA algorithm is used to handle the size of the 104 file, which contributes to fast transmission of the distribution terminal model information and is conducive to plug and play of a device.

The invention discloses a drilling-free forming pile based on radial pressurization and a construction method and application thereof. The drilling-free forming pile comprises a pile body, the pile body is formed through that slurry is continuously filled in a hard screen pipe wrapped by one layer of elastic sealing film until the elastic sealing film is burst open and the filled slurry enters a peripheral soil layer, the filled slurry is cement mortar or concrete, the hard screen pipe is a pipe body is inserted in the soil layer in advance, and a plurality of slurry filling holes are arranged on the side wall of the hard screen pipe. The construction method includes: 1, hard screen pipe inserting; 2, slurry filling; and 3, pile body forming. The formed pile body is an anti-sliding pile for stabilizing side slopes or a reinforcing pile for reinforcing a foundation, and a plurality of formed pile bodies form an anti-seepage wall. The drilling-free forming pile is reasonable in structural design, convenient to construct, low in investment cost, good in using effect, high in practical value, wide in application range and capable of solving the problems of inconvenient construction, high investment cost, long construction period, poor using effect and the like of an existing pile foundation.

The invention provides an improvement method for improving communication delay in distributed secondary control of a direct current micro-grid, which is mainly used for improving bus voltage drop caused by droop control and further improving the current sharing precision of output current of a plurality of parallel units at the same time, and therefore, the communication pressure of geographically adjacent direct current micro-grid units is reduced, and the overall performance of the direct current micro-grid system is improved. The improved communication delay algorithm provided by the invention mainly aims at the time delay in the communication link of a consistency algorithm, and solves the problems that the consistency algorithm cannot converge and the output of the direct current micro-grid is unstable due to the communication delay.

The invention relates to a distributed microgrid system operation method based on Gossip algorithm. The microgrid system comprises an energy storage battery, a converter and a controller correspondingto the converter. The microgrid system comprises the following steps: collecting current and power parameter data in the microgrid system; Based on the power formula, the objective function of the microgrid system is constructed by using the parameter data. The Lagrangian function of objective function is constructed by Lagrangian multiplier method. Under the necessary condition of the existenceof Lagrangian extremum, the minimum value of the objective function is obtained by Gossip algorithm, and the optimal solution is obtained. The power data contained in the optimal solution is given toa controller in a home microgrid system, thereby controlling the active power of the microgrid system converter. The invention effectively solves the problems existing in the centralized control, improves the control performance of the system, and is conducive to realizing plug-and-play on the micro-network.

A locking opening structure of a steel cofferdam and a construction method for the locking opening structure relate to the field of deep foundation pit or water foundation construction. The locking opening structure comprises an outer steel pipe and an inner steel pipe, wherein the inner steel pipe is sleeved in the outer steel pipe, both the inner steel pipe and the outer steel pipe are provided with a longitudinal opening, and the outer diameter of the inner steel pipe is 1-2mm larger than the inner diameter of the outer steel pipe. The construction method includes the steps: selecting the outer steel pipe and the inner steel pipe, longitudinally cutting each steel pipe to form one opening, and adjusting pipe diameters of the outer steel pipe and the inner steel pipe which are unmatched so that the outer diameter of the inner diameter is 1-2mm larger than the inner diameter of the outer steel pipe; welding the outer steel pipe and the inner steel pipe at the positions of locking openings of two adjacent steel cofferdam components respectively, wherein the opening of the outer steel pipe is opposite to the opening of the inner steel pipe; applying grease mixing materials on the inner wall of the outer steel pipe and inserting the inner steel pipe into the outer steel pipe 1; and inserting and piling the steel cofferdam without performing grouting and filling sealing materials at the locking openings, so that construction of the steel cofferdam can be quickly completed, and good sealing effect is achieved.

The invention discloses a PCB design layout audit device, the PCB design layout audit device comprises a device storage, the device storage is provided with the an automatic DFM audit module and a man-machine interaction audit module; the automatic DFM audit module comprises a line audit module, a via hole audit module, a copper sheet audit module, a silk screen audit module, a solder resist audit module and a steel mesh audit module; the man-machine interaction audit module comprises a netlist audit module, a layout audit module, a signal audit module, a structure IDF output module, a device height reporting module, a locating and wiring related interaction audit module, a silk screen related interaction audit module and a production related interaction audit module. The audit system is independently prepared into the electronic product device to be conveniently used by the customers in a plug and play mode, and the audit system is not limited by the mounting computer anymore. The Ukey device is inserted into the computer for the corresponding engineer and the PCB design audit can be executed according to the requirement from the engineer.

The invention relates to a multifunctional integration embedded static image compression system, wherein the image gathering module comprises a video decoder, a video gathering programmable logic device and the corresponding static storage, the image compression module comprises a digital signal processor for preliminary treatment, small wave conversion, entropy encoding, rate control and packing with the corresponding synchronous dynamic memory, and the data transmission module comprises a main controller and a general purpose serial controller. The invention realizes visualized control for rate flow with the transmission velocity of flow compression as high as 480Mbps.

The invention discloses a modular coffer construction method for concrete without subsealing in the geologic condition of stratum: Firstly, a strutting piece and a guide frame are welded all around the outside of a steel barrel of a prepared cushion cap; Secondly, a lock steel pipe pile is downwards inserted along the guide frame, and the bottom of the lock steel pipe pile should reach the surface of a strong weathered rock; Thirdly, the inner of the steel pipe pile is downwards excavate vortically by a rotary drill rig, after deepening to the inner of a weak weathered rock, a drilled pile on the bottom of the steel pipe pile is constructed; Fourthly, after finishing all the drilled piles on the bottom of the steel pipe pile, a closed coffer is formed; Then, the river water in the coffer is drawn out and a support is installed in the coffer; After that, a submerged pump is arranged in coffer to draw out the percolating water, and then a foundation cleaning is dug by a digger to the bottom of the cushion cap; Finally, the concrete cushion is poured to the bottom of the cushion cap, and the cushion cap construction can be finished in the waterless and dry environment. The construction method has the advantages that the stratum does not need to be blown up under the water, the construction difficulties and amount are reduced, the whole stability of the coffer is strong, and the construction efficiency is high.

The invention discloses a spatial information network isomerism dynamic networking method based on a layered autonomous area. The method includes the following steps that according to components and functions of all parts in the whole spatial information network, a spatial information network system structure is set up; according to the properties, the functions, the zone positions and the requirements, all nodes in the network are divided into different layered autonomous areas with independent networking routing strategies; boundary nodes are selected to separate a control link from a service link and the inter-domain control information transmission and the intra-domain control information transmission are separated; an intra-domain sub-layer which is in line with international standards and an inter-domain sub-layer which has the same protocol and functions on all the nodes are set up to form a layered autonomous area model network protocol stack frame. According to the spatial information network isomerism dynamic networking method based on the layered autonomous area, coupling is little, the network nodes are plugged when needed, and the network managing control efficiency is high.