54results about How to "Reduce transmission impact" patented technology

The invention discloses an electricity consumption information collection system electric energy meter sensing method based on narrow band power line carrier wave, and relates to a collection method. During the application process, if electric energy meters are increased or replaced, the change of the electric energy meter archive information cannot be reported to the main station of the collection system in time. The method comprises the following steps: (11) carrying out abbreviated addressing and automatic table searching by a collector, and forming an electric energy meter archive; (12) once the change of the electric energy meter archive is sensed by the collector, actively reporting the change information to a concentrator by a narrow band power line carrier wave channel; and (13) reporting the archive information to the main station of a collection system in time by the concentrator. The automatic sensing of carrier wave is adopted, the assembly and disassembly of electric energy meters can be found out in time, other incidents are not taken into account, and the processing is real-time. After a meter or collector is installed, the information can be reported in several seconds. The active reporting is realized, and the information replacement efficiency is improved effectively.

The invention relates to a method for detecting the maximum transmission unit of path, which is characterized in that: each middle node of node chain from the force source node to the target node, should process the data report of maximum transmission unit of the detecting path sent from the source node to the target node; when the middle node receives the data report, to display the maximum transmission unit information in said data report; and when the target node receives the data report, sending the maximum transmission unit information to the source node; and the source node, based on received information, confirms the path maximum transmission unit of the chain from it to the target node. The invention can quickly and accurately confirm PMTU, to confirm the best throughout of network, and avoid loss and retransmission, to improve the network safety.

The invention relates to the field of mobile type drilling facilities, particularly to a self-elevating drilling platform cantilever beam sliding device. The self-elevating drilling platform cantilever beam sliding device comprises a multi-level planetary reducer and a sliding machine body; a power source which is arranged beside the multi-level planetary reducer drives an internal gear of the multi-level planetary reducer to rotate and the rotating direction can be changed; the sliding machine body is installed on a main deck of a platform; a gear pair is installed inside the sliding machine body; the gear pair is connected with an output shaft of the multi-level planetary reducer; the exterior of the sliding machine body is provided with a driving gear which is driven by an output shaft of the gear pair; the exterior of the sliding body is provided with a rolling wheel assembly; the rolling wheel assembly is arranged above or below the driving gear; a rack is arranged between the rolling wheel assembly and the driving gear in a flat mode; teeth on one side of the rack are engaged with the driving gear; the other side of the rack is matched with the rolling wheel assembly; the rack is fixedly connected with a cantilever beam. The self-elevating drilling platform cantilever beam sliding device has the advantages of being high in safety reliability, large in bearing capability, high in working efficiency and accurate in positioning.

The invention relates to an electric thread sleeve used for steel bar connection and a screwing device. A tooth part is arranged on the outer wall of the thread sleeve. The screwing device comprises arotating motor, a driving gear arranged on a spindle of the rotating motor and a gear set arranged between the driving gear and the outer wall of the electric thread sleeve and engaged with the driving gear and the tooth part of the electric thread sleeve. Compared with the prior art, the screwing device is matched with the electric thread sleeve in use, then through rotating of the motor and transmitting of the gear set, the electric thread sleeve rotates, and thus the efficiency of on-site steel bar connection can be greatly improved; and the gear engaging property is good, transmission isstable, noise is small, the influence of the manufacturing error on transmission is reduced, and transmission is stable.

The present invention relates to the cable field, in particular to a self-ice melting cable used for an airport. The cable comprises cable cores which are annealing copper conductors, the crosslinkingpolyethylene insulating layers are extruded on the exteriors of the copper conductors, and each copper conductor and each crosslinking polyethylene insulating layer are a cable set. The steel wire ropes used for improving the tensile resistance are braided on the exteriors of the cable sets, a dual-layer metal armored layer is arranged on the exteriors of the steel wire ropes, and a copper wire braided shielding layer is braided on the exterior of the dual-layer metal armored layer. A butyronitrile rubber sheath layer is extruded on the exterior of the copper wire braided shielding layer, anda plurality of heating bodies are all arranged in the stranding center of the cable sets and in the dual-layer metal armored layer and the butyronitrile rubber sheath layer. By utilizing the heatingbodies to heat the cable, not only the cable internal transmission performance stability can be guaranteed, at the same time, the ice on the exterior of the cable can be melted, thereby reducing the influence on the cable transmission.

The invention provides a self-propelled feeding robot, which relates to the field of animal husbandry equipment. In view of the problem that the current feeding robot is insufficient in driving force and cannot adapt to the pushing of light feed, resulting in repeated feeding, a rotating shell is provided as the feeding structure for contacting the feed. The active rotation of the rotating shell is used to assist the push and accumulation of the feed, improve the pushing ability of the robot, and reduce the waste of feed rolling caused by the repeated pushing process; including self-propelled platform, rotating shell, guide plate and driving wheel, the rotating shell is cylindrical It is sleeved on the outside of the self-propelled platform, the inner wall of the rotating shell is provided with a ring-shaped guide rail, the guide plate is installed on the self-propelled platform through a lifting mechanism, and the guide plate is connected with at least three sheaves. The driving wheel is connected with the self-propelled platform, and the outer ring of the driving wheel is inscribed on the inner wall of the rotating shell to drive the rotating shell to rotate around the axis.

The invention discloses a gear with the function of anti-vibration and wear resistance, which comprises a gear main body, a tooth assembly is arranged on the outside of the gear main body, a connecting convex ring is arranged on the inside of the gear main body, and the gear main body and the connecting convex ring are integrated Structure, the inner side of the connecting convex ring is provided with a buffer inner ring, the middle part of the buffer inner ring is provided with a connecting shaft hole, the inside of the connecting convex ring is provided with a buffer groove, the outer surface of the buffer inner ring is provided with a main buffer block, and the buffer inner ring It has an integrated structure with the main buffer block. The two side walls of the buffer tank are provided with main springs, and the two sides of the main buffer block are pressed against the main springs; the invention uses the designed connecting convex ring and buffer inner ring to be used in gears. When a sudden force is applied, the main buffer block on the buffer inner ring can be used to slide and compress the main spring in the buffer groove, and the elastic force of the main spring can be used for buffering, thereby reducing the impact on the gear when it starts and stops, and reducing the impact of vibration on the gear during operation. Fatigue damage from gears.

The invention provides a KM silicon carbide abrasive and its preparation method and use method. The abrasive comprises the following components: 5-30 parts of emery particles, 10-20 parts of white lead powder, 1-4 parts of calcium hydrogen phosphate, 20~40 parts of engine oil, 20~30 parts of linseed oil, 2~5 parts of sodium silicate, 32~37.99 parts of silicon carbide. The invention has high processing efficiency; little damage to the hard surface gear body; greatly shortens the running-in time of the newly assembled gear and the gear after repair; it is especially suitable for the point, line and surface grinding processing of the high-precision gear transmission line, and can effectively accelerate the grinding of the gear Meshing, reducing the influence of manufacturing and assembly errors on gear transmission, through online grinding processing, except for center moment deviation, pitting peeling, bearing damage, etc., the grinding process of meshing surface points, lines, and surfaces is fast and simple , easy to operate, easy to grasp, and suitable for popularization, which greatly improves the gear transmission accuracy and ensures the smooth production of new and repaired gears. It also has the advantages of no pollution, no influence on the quality of lubricating oil, greatly reducing the vibration frequency of the gear to the allowable range of the design, and no side effects.

The invention relates to an optical fiber connector assembly, and the assembly comprises an optical fiber male head and an optical fiber female head. An optical fiber insertion core of the optical fiber male head comprises a male head lens seat and a male head insertion core installation seat provided with a male head optical core channel, wherein the male head lens seat and the male head insertion core installation seat are arranged in a split manner. The male head lens seat is provided with a male head lens which is located at a front side of the corresponding male head optical core channel, and a front end part of the male head optical core channel is located at a focus position of the male lens. A female head optical fiber insertion core comprises a female head lens seat and a female head insertion core installation seat provided with a female head optical core channel. The female head lens seat is provided with a female head lens which is located at the front side of the corresponding female head optical core channel, and the front end part of the female head optical core channel is located at the focus position of the female head lens. One of the male head lens and the female head lens serves as a beam-expanding lens which is used for the beam expansion of a corresponding optical signal, and the other one of the male head lens and the female head lens serves as a beam bunching lens which is used for the beam bunching of the optical signal after beam expansion. The assembly provided by the invention can reduce the optical density of a unit area.

The invention relates to a device for trimming the thickness of a mechanical body. Wherein, the trimming is realized in the following manner: a screw is screwed through the threaded hole, one end of the screw presses the center of the disc-shaped part, and the disc-shaped part is deformed to act as a lever to act on the adjacent body. This will reduce the influence of the screw lead on the transmission determined by this lever.

The invention discloses a generation grouped cross-random linear network coding method which comprises the following steps of: sequentially differentiating the generations of original data by an information source, sequentially grouping in each generation and forming a generation set by a generation and the next generation; coding in each generation set, wherein the coding process of each generation sets is independent, and confirming the information package structures of the generation sets by the information source; confirming local sparse coding coefficient vectors according to the number of coding-participating information packages by a node, then, generating a new coding package according to the local sparse coding coefficient vectors and the coding-participating information packagesand sending the new coding package to downstream nodes; carrying out the linear correlation detection of the received new coding package by a node, using the new coding package for coding or decodingif the new coding package passes the detection or else discarding or retransmitting; and adopting a Gaussian column principal component elimination method to decode the original data by a destinationoption node after receiving enough coding packages passing the linear correlation detection. The invention has the advantages of lowering the network coding time and the space complexity and weakening the necessary conditions for correct coding, thereby being suitable for information transmission in information sharing.

The invention discloses a signal processing method and device, belonging to the technical field of communication. The device includes: a signal acquisition module, a matrix calculation module and a signal calculation module. The method includes: setting each sampling point signal on the orthogonal frequency division multiplexing OFDM symbol, and acquiring an input signal; calculating a constraint matrix according to channel characteristics of frequency selective fading; according to the sampling point signal, the input signal and the The constraint matrix computes the output signal. The device includes: a signal acquisition module, a matrix calculation module and a signal calculation module. The invention solves the problem that the transmission of OFDM symbols is affected by frequency selective fading, the constraint matrix obtained according to the channel characteristics of flat fading is not suitable for OFDM symbols, and achieves the effect of reducing the influence of frequency selective fading on the transmission of OFDM symbols.