13results about How to "High transmission accuracy" patented technology

The utility model provides an intelligent inspection robot transmission system which comprises a steering engine assembly, a shock absorber assembly and a driving assembly, and a hub rotating support shaped like a Chinese character'wang 'is arranged between the driving assembly and the steering engine assembly and located on the front end side of the driving assembly. The shock absorber assembly is connected with the rear upper end of the hub rotating support shaped like the Chinese character'wang 'and the rear end side of the traveling assembly, a joint motor is adopted for a horizontal driving part of the steering engine assembly, and a servo motor is adopted for a front-back driving part of the traveling assembly. By adopting the mode that the joint motor controls the transmission system to steer and the spline is matched with and fixes the joint motor, steering integrated control is added, the transmission accuracy is improved, the risk that the joint motor is exposed and is prone to damage is reduced, the requirement for the space size of a chassis is reduced, the structure is more compact, and rapid mounting and dismounting are convenient; the steering engine assembly and the walking assembly are independently designed, so that the whole transmission system meets the national II-class anti-explosion requirement and the IP66 / 68 sealing grade requirement.

This application discloses a scanning electron microscope device, comprising: an electron gun, the cavity of which is electrically connected to a first reference voltage terminal; a detector disposed inside the cavity of the electron gun and electrically connected to the first reference voltage terminal; an amplifier, the input terminal of which is electrically connected to the output terminal of the detector and electrically connected to the first reference voltage terminal; and an analog-to-digital converter (ADC), the input terminal of which is electrically connected to the output terminal of the amplifier, a first terminal of the ADC's power supply being electrically connected to the ADC, and a second terminal of the ADC's power supply being electrically connected to a second reference voltage terminal. The aforementioned scanning electron microscope device can improve the quality of semiconductor images generated by the scanning electron microscope.

This application provides a data transmission method and apparatus, to improve transmission accuracy of a response message. The method includes: receiving, by a network device, uplink data sent by a terminal device based on a grant-free manner; and sending, by the network device, a response message for the uplink data to the terminal device according to a type of the response message for the uplink data, where the type of the response message for the uplink data is a first response type or a second response type, the first response type is that each time the terminal device sends the uplink data, the network device sends the response message for the uplink data to the terminal device once, and the second response type is that after the terminal device sends the uplink data for a plurality of times, the network device sends, to the terminal device once, the response message for the uplink data that is sent for the plurality of times.

The utility model provides a kind of vacuum mechanical arm power transmission device, comprising: first pulley, and the opposite side of its first outer circumferential surface is equipped with first fixed anchor point and is equipped with movable adjustable movable anchor point by a tension adjusting component;Second pulley, and the opposite sides of its second outer circumferential surface are equipped with second fixed anchor point respectively;First synchronous belt, for open loop belt, one end is connected and fixed in movable anchor point, after the other end is wound around the partial circumferential surface of first pulley and the partial circumferential surface of second pulley, is connected and fixed in one of second fixed anchor point;Second synchronous belt, for open loop belt, one end is connected and fixed in first fixed anchor point, after the other end is wound around the partial circumferential surface of first pulley and the partial circumferential surface of second pulley, is connected and fixed in another second fixed anchor point.The utility model adjusts the position of movable anchor point by a tension adjusting component, and the tension of first synchronous belt and second synchronous belt is adjusted by the adaptive rotation of second pulley, and the transmission accuracy is improved.

The application belongs to the technical field of signal transmission, and discloses a method for eliminating analog signal transmission error through digital compensation, which specifically comprises the following steps: in addition to the original signal transmitting circuit part, a signal detecting part composed of MCU, ADC and a communication module is arranged at the signal transmitting end; a signal detecting part composed of MCU and ADC communication module and a control part capable of controlling the signal at the output end to be offset and gain varied are arranged at the signal receiving end; the signal at the receiving end is collected by the MCU to compare with the data of the transmitting end communication module, and the difference between the two data is calculated to obtain the correction value of the amplitude and offset; the gain and offset of the signal are changed by controlling the offset and gain circuit part at the receiving end, so that the transmission error is eliminated, and the gain and offset control method is realized by using DAC, PGA and other components; the deviation of the frequency response can also be calculated according to the requirement, and is corrected by the gain and offset control circuit part.

The utility model discloses a kind of clamping jack and its whole bundle cable threading machine, it is related to the steel strand cable threading technical field of construction, bridge cable-stayed cable construction engineering, it includes cylinder body and piston rod of one end sliding connection in the cylinder body and the other end stretches out the cylinder body outside, the end of the cylinder body that stretches out piston rod is connected with barrel clamping head, steel strand transmission channel is radially equipped in the middle of this clamping head, the piston rod stretching out end is connected with clamping fork, the clamping fork is installed in the movement channel that is axially equipped in the clamping head, the clamping head is installed with steel strand inductor, compared with prior art, the utility model realizes accurate clamping to steel strand, improve the friction with steel strand, avoid the cable threading slip, can improve the reliability of steel strand compression, also can be used for cable threading different specifications whole bundle steel strand, improve the applicability of cable threading machine.

The present disclosure provides a warped wafer transfer method and device, the method comprising: taking out a warped wafer from a first slot of a magazine by a Bernoulli arm and transferring it to a SUBCHUCK device; transferring the warped wafer, which has performed a pre-alignment operation, to a pre-calibrated loaded wafer position W2 by the Bernoulli arm, vertically moving a worktable to a pre-calibrated wafer handover height H1, opening a worktable vacuum, closing a Bernoulli arm blowing, and making the warped wafer fall onto the worktable; horizontally moving the worktable to a pre-calibrated auxiliary blowing position W3, opening an auxiliary blowing system located above the warped wafer, and making the warped wafer uniformly adsorbed onto the worktable. The transfer method and device provided by the present disclosure can improve the transfer efficiency of the warped wafer.

This utility model discloses an auxiliary positioning device for a medium- and high-voltage electronic aluminum foil corrosion production line, relating to the field of aluminum foil corrosion production technology. It includes a tank body with a positioning mechanism fixedly installed in the middle, and side guide rollers fixedly installed at both ends of the tank body. Using this structure, the auxiliary positioning device drives the slide and plate to move vertically via a screw, precisely adjusting the depth of the pressure roller's immersion in the electrolytic cell. This adapts to different thicknesses of aluminum foil and electrolyte concentrations. Simultaneously, the limiting discs at both ends of the pressure roller and side guide rollers, with their spacing adjusted by hand-tightening screws, effectively constrain the lateral displacement of the aluminum foil. The combination of these two components ensures that the aluminum foil is conveyed centered along a preset path, avoiding deviation and friction with the electrode plate, reducing surface damage, and ensuring that the contact angle and area between the aluminum foil and the electrolyte are always optimal. This significantly improves corrosion uniformity and conveying accuracy, and reduces the scrap rate.

This utility model discloses an aircraft engine temperature detection device, including a first thermocouple, a second thermocouple, a third thermocouple, a fourth thermocouple, and an ECU unit. It also includes: an intermediate connecting assembly, with the first, second, third, and fourth thermocouples respectively connected to the intermediate connecting assembly, which is connected to the ECU unit; a first adjustable resistor for correcting temperature signal offset errors, located within and connected to the intermediate connecting assembly; and a second adjustable resistor for correcting temperature signal gain errors, also located within and connected to the intermediate connecting assembly. This utility model can improve signal transmission accuracy.

The invention discloses a cased well ground signal two-way wireless electromagnetic transmission device and method, and belongs to the technical field of oil and gas field development logging, the cased well ground signal two-way wireless electromagnetic transmission device comprises an underground terminal system, a metal loop transmission channel and a ground terminal system, the metal loop transmission channel is a closed metal loop constructed with an oil pipe and a casing as carriers, and the metal loop transmission channel is a closed metal loop. The underground terminal system is sequentially and electrically connected with a first centralizer, an ascending transmission short section, a packer, a descending transmission short section, a sensor integration short section and a second centralizer from top to bottom along the axis of a casing pipe, and the first centralizer and the second centralizer are made of conductive rubber materials. The oil pipe and the sleeve are electrically conducted to construct the closed metal loop, the oil pipe and the sleeve serve as carriers to construct a closed metal loop transmission channel, transmission media do not need to be additionally laid, the metal loop provides a low-loss transmission path for TM waves, signal attenuation is effectively reduced, and the transmission efficiency is improved. The problem of serious signal attenuation in a deep well in traditional wireless electromagnetic transmission is solved.

The utility model discloses a kind of reel transmission structures, it is related to reel transmission technical field, including driving sprocket and driven sprocket, the driving sprocket and driven sprocket are arranged in parallel, driving sprocket and driven sprocket are tensioned and provided with synchronous belt, the side coaxial fixed with one reel of driving sprocket, the same side coaxial fixed with two reels of driven sprocket, the wheel rim of one reel and two reels is evenly distributed with pin column convex column, the upper level of one reel and two reels is provided with flow channel plate, the flow channel plate is fixed in machine tool workstation by bolt mounting mode. The utility model is ensured that product can be strictly conveyed according to preset path and position by the cooperation of pin column convex column and product round hole, realizes accurate step type conveying.

The utility model relates to a flat supporting stepping mechanism of a chamfering machine. The flat supporting stepping mechanism comprises a base (1), a plurality of front and rear racks (2) are arranged on the base (1), a feeding frame (3) is arranged on one side of each rack (2), a material stirring mechanism (4) is arranged at the position of each feeding frame (3), a left set of wheel coupling mechanism (5) and a right set of wheel coupling mechanism (5) are arranged on each rack (2), and a stepping mechanism (6) is arranged on the front side or the rear side of each rack (2). According to the flat supporting stepping mechanism of the chamfering machine, the material shifting mechanism is adopted for feeding, the stepping mechanism is adopted for conveying, and chamfering is conducted in cooperation with the coupling wheel mechanism, so that the production takt is improved, and the requirement for the rod discharging speed of main machine equipment can be met.

This utility model discloses a chain pallet trolley, including a frame, a traveling mechanism, and a double-row chain conveyor mechanism. Two double-row chain conveyor mechanisms are installed on the left and right sides of the frame, and the traveling mechanism is installed at the bottom of the frame. Through the two double-row chain conveyor mechanisms, sorted items can be conveyed to the corresponding sorting ports. For heavier goods, the chain-supported conveyor effectively solves the technical problems of belt-based sorting in the prior art, such as "severe belt wear and aging, easy belt damage, frequent maintenance, and increased maintenance costs," achieving stable transmission and reducing maintenance frequency and costs.