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30results about How to "Eliminate complex processes" patented technology

Rapidly positioned column foot anchor bolt structure

The invention discloses a rapidly positioned column foot anchor bolt structure which comprises a positioning mold plate, wherein anchor bolt holes are formed in the positioning mold plate; anchor bolts are inserted into the anchor bolt holes; the positioning mold plate is fixed with the anchor bolts through screw nuts; the axes of the anchor bolts are parallel to one another; N transverse ribs which are distributed up and down in the direction of the axes of the anchor bolts are fixedly connected between the every two adjacent anchor bolts; the transverse ribs are all positioned on the lower side of the positioning mold plate; the transverse ribs are perpendicular to the axes of the anchor bolts; longitudinal ribs are fixedly connected between every two adjacent transverse ribs up and down; a gradienter is arranged on the upper surface of the positioning mold plate; a through hole is formed in the center of the positioning mold plate; a light beam emission device is arranged on the positioning mold plate; the emitting end of the light beam emission device is positioned inside the through hole; light beams are emitted to the lower side of the positioning mold plate; and the emitted light beams are parallel to the axes of the anchor bolts. By adopting the rapidly positioned column foot anchor bolt structure, the problems that in the prior art, a steel column foot is low in positioning construction speed and low in efficiency can be solved, and the purposes that on-site construction procedures of steel column foot positioning are simplified and the construction efficiency is improved can be achieved.
Owner:CHINA MCC5 GROUP CORP

ToF pixel structure capable of simultaneously capturing depth and gray information

The invention discloses a TOF (Time Of Flight) pixel structure capable of simultaneously capturing depth and gray information. The TOF pixel structure consists of a PMOS (P-channel Metal Oxide Semiconductor) tube P1-P2, a photodiode Photo-detector, a differential comparator DDA, a transparent latch, a high-speed ADC (Analog to Digital Converter), an NAND gate NAND and an AND gate AND, a photosensitive part in the pixel structure adopts a three-FD structure, two FDs are used for collecting depth information signals, and the two FDs are connected with a pixel internal integrated double-end differential comparator. The double-end differential comparator can effectively filter visible light information and convert depth information into pulse number, and signal reading is carried out through acounter outside a pixel. And the other FD is used for sensing visible light information and reading the visible light information through an analog-to-digital converter outside the pixel. According to the invention, depth information and gray scale information can be captured at the same time, real-time fusion processing is carried out, the detection performance of the ToF-based 3D image sensor is improved, and the use occasion is broadened.
Owner:TIANJIN UNIV MARINE TECH RES INST

The operation method of the screen display of the train operation monitoring device without basic data storage

Disclosed is an operation method of a screen displayer of a train operation monitoring device without stored basic data. A main control unit adopts a linear FLASH as storage medium of basic data and sends the basic data needed by the screen displayer in real time according to the operation state of a train; the main control unit broadcasts the basic information of two block sections in the front operating direction of the train in real time; when positioning of the basic data begins and the route of the train is transferred, the main control unit actively sends the basic data in the front operating direction of the train to the screen displayer; the screen displayer judges whether the basic information, broadcasted in real time, of the two block sections in the front operating direction of the train is consistent with the received basic data in the front operating direction of the train; if not, or the screen displayer is restarted due to power down, the screen displayer actively applies for basic data from the main control unit; after the main control unit receives the application, the main control unit immediately sends the basic data in the front operating direction of the train to the screen displayer from the current position; the screen displayer displays various types of state information in the front operating direction of the train according to the received basic data.
Owner:HENAN THINKER AUTOMATIC EQUIP CO LTD

Bamboo and plastic composite material and preparation method thereof

The invention discloses a bamboo and plastic composite material and a preparation method thereof. The bamboo and plastic composite material comprises the following raw materials according to parts by weight: 40-80 parts of modified bamboo fiber, 15-85 parts of plastic, 2-10 parts of compatilizer, 2-10 parts of lubricant, 0.2-1.0 part of antioxidant, 5-15 parts of filler and 2-10 parts of fire retardant. Bamboo raw materials are prepared into modified bamboo fibers with an explosion treatment method, wherein the modified bamboo fibers are mutually separated, and eh surface of the modified bamboo fibers is covered with lignin; then the modified bamboo fiber is compounded with plastic; and the product is extruded to form finished product material. According to the bamboo and plastic composite, the technical problems of poor compatibility of wood fiber and thermoplastic plastics can be solved to realize the purpose of comprehensively utilizing the bamboo fiber and plastic, the wood can beomitted, and the additional value of the forest residue is increased. The bamboo and plastic composite material manufactured with the preparation method has the advantages of high mechanical property, and strong tensile strength, bending strength and impact strength of composite material, and the industrial production of high-performance products, such as building engineering materials can be realized.
Owner:BEIJING FORESTRY UNIVERSITY

Wood-plastic composite material and preparation method thereof

The invention discloses a wood-plastic composite material and a preparation method thereof. The wood-plastic composite material is prepared from the following raw materials in part by weight: 30 to 80 parts of modified plant fiber, 20 to 70 parts of plastic, 2 to 10 parts of compatilizer, 2 to 10 parts of lubricant, 0.2 to 1.0 part of antioxidant, 5 to 15 parts of filler and 2 to 10 parts of flame retardant. The preparation method comprises the following steps of: preparing the modified plant fiber which is separated from each other and of which the surface is coated with lignin by using wood fiber, namely cotton stalks by a blasting treatment method, compounding the modified plant fiber and the plastic, and extruding to form a finished product material. By the method, the technical problem of low compatibility of wood fiber and thermoplastic plastic is solved, the comprehensive utilization of the wood fiber and the plastic is realized, timber can be replaced, and the added value of agricultural waste, namely the cotton stalks is increased. The prepared wood-plastic composite material has good mechanical properties, and high tensile strength, bending strength and impact strength; and the industrialized production of high-performance products such as constructional engineering materials is realized.
Owner:BEIJING FORESTRY UNIVERSITY

Model predictive torque control method for npc three-level converter-pmsm system

The invention discloses an improved model predictive torque control method for an NPC three-level converter-PMSM system. Calculate the offset threshold, and divide the midpoint voltage offset of the two DC support capacitors in the converter into two types of regions according to the offset threshold: for a larger midpoint voltage offset, in each sampling period according to the current midpoint The voltage offset calculates the actual amplitude and phase of the small and medium vectors of the converter, and dynamically divides the sectors; according to the control objectives of different areas, constructs the cost function and the finite control set and obtains the optimal voltage vector, and outputs the optimal voltage vector ; Add dead time to the control time corresponding to the optimal voltage vector to output the PWM signal to the permanent magnet synchronous motor for control. The invention can improve the performance of torque and flux linkage control, reduce the amount of calculation, and solve the problems of complex weight coefficient setting process in the existing control, and the decrease of system torque, flux linkage and current control performance when the midpoint voltage offset amplitude is large, etc. question.
Owner:ZHEJIANG UNIV
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