104results about How to "Little improvement" patented technology

The invention relates to a brake-by-wire system of an automobile and belongs to the technical field of automobile brake systems. In the brake system, a vacuum booster of the traditional vacuum booster hydraulic brake system is replaced with a motor, and a piston in a brake main cylinder is pushed to move to generate brake hydraulic pressure, so that dependence on vacuum degree of an engine is canceled; through the adoption of a pedal simulator, influences on feelings of a brake pedal during coordinated control of feedback and brake are eliminated; a hydraulic control unit of the traditional brake system is kept to implement hydraulic adjustment; and as a standby hydraulic brake system is integrated, braking with certain strength can be implemented by a driver under a situation that the power supply of the system is ineffective. Compared with the traditional distributed brake-by-wire scheme, the brake-by-wire system provided by the invention has the advantages as follows: the structure is changed when compared with the structure of the traditional vacuum booster hydraulic brake system, the system can be mounted on the automobile more conveniently, and more existing technologies in the traditional brake system can be succeeded in the control aspect.

The invention provides a foreign body detection method and system based on an impedance characteristic. The method comprises the steps that a detection coil is laid in an area to be detected, wherein the detection coil is connected with a capacitor element to form a resonant circuit, and a high frequency carrier signal is loaded on the resonant circuit; a resonant current signal on the resonant circuit is collected; other induction signals outside the frequency band of the high frequency carrier signal are filtered out; and finally, amplitude and phase analysis is carried out on the filtered resonant current signal to determine whether a foreign body is in the area to be detected. The method has the advantages that the impedance change of the detection coil is correspondingly acquired by detecting the change of the phase and amplitude of the resonant current signal, so as to judge whether a foreign matter exists. The method has the advantages of low cost and good effect. The original system is changed less. Especially for a wireless power transmission system, without affecting the efficiency of the original system, the method and system can be well adapted to foreign body detection in a variety of magnetic fields to improve the safety of the wireless power transmission system.

The invention discloses an Ethernet-tree realization method, an Ethernet-tree realization system, an Ethernet-tree realization device and network equipment. The method comprises that: a first provider edge (PE) transmits a reachable route updating message carrying the node type of a first connected customer edge (CE) to a second PE, wherein the node type comprises a leaf node and a root node; andwhen receiving the route updating message, the second PE judges whether the first CE is the leaf node or the root node according to the node type carried in the route updating message, traverses eachsecond CE connected with the second PE, and for each second CE, does not establish a pseudo wire between the first and second CEs between the second PE and the first PE if the first and second CEs are both the leaf nodes, otherwise tries to establish the pseudo wire between the first and second CEs between the second PE and the first PE. The node type is announced by the route updating message, and the leaf nodes are isolated so as to avoid the establishment of the pseudo wire between the leaf nodes and simply and conveniently realize an Ethernet-tree.

The invention discloses an RRU antenna calibration method, an apparatus and a system. The method comprises the steps of calculating a corresponding calibration coefficient among RRUs to each calibration port according to different RRU calibration ports through calibration signals in interconnected transmission; calculating a corresponding calibration coefficient in a RRU to each antenna in the RRU according to different antennas in the RRUs and the calibration signals transmitted by the calibration ports; and calibrating antenna transmitting channels and antenna receiving channels according to the calibration coefficients among the RRUs and the calibration coefficients in the RRUs so that the proportions of the antenna transmitting channels and the antenna receiving channels are same. The RRU antenna calibration method, the apparatus and the system calibrate different RRU calibration ports through interconnection among the RRUs or side connection of the antennas, and then calibrate the antennas in the RRUs by using the calibration ports, thereby enabling the calibration of the antennas among the RRUs and guaranteeing reciprocity of uplink and downlink channels of a TDD system with high accuracy, less improvement on equipment and lower cost.

The invention discloses a manufacturing system for a wearing product. Tension force of strip-shaped elastic sheet material capable of stretching along a process direction is released and the elastic sheet material is processed into a regular shape and then turned and amplified to be configured to an absorbing main body. The manufacturing system comprises a tension force conveying device stretching the strip-shaped elastic sheet material and conveying the same along the process direction, a tension force-free conveying device releasing tension force of the elastic sheet material conveyed by the tension force conveying device and processing the elastic sheet material according to a certain specification, and a turning and amplifying device arranged on a downstream of the tension force-free conveying device and rotating the processed elastic sheet material into 90-degree. Tension force-free conveying is first mentioned in the industry; stretching ratio of the elastic sheet material is segmentally controlled during the conveying, and the elastic sheet material is processed; a foundation is laid for batch production of wearing products mentioned in the technical backgrounds; the manufacturing system has a compact structure and high production efficiency; and technology process can be shortened and the products manufactured by the system are deeply welcomed by customers.

The application relates to a fuel cell system and a low-temperature starting method thereof. A fuel cell is provided with a heating unit so that the temperature of a fuel cell pile can be increased ina low-temperature environment, and warm start of the fuel cell is facilitated. The fuel cell system is provided with the heating unit, the improvement of the original structure of the fuel cell is small, and the structural design of the fuel cell pile is not influenced.

The invention discloses a tea/cosmetics quality detecting method based on two-dimensional correlation spectra. The method comprises the following steps: spectra acquisition comprising the steps of illuminating samples through LED, motivating visible near-infrared reflective spectra or fluorescence spectra of the samples and acquiring; spectrum preprocessing comprising the steps of preprocessing the acquired fluorescence spectra or reflective spectra; two-dimensional correlation spectrum obtaining comprising the steps of selecting feature regions from multiple different sample spectra, and carrying out synchronous correlation or asynchronous correlation calculation, to obtain synchronous spectra or asynchronous spectra; detection model establishment comprising the steps of establishing a sample two-dimensional correlation spectrum and sample level detection evaluation model based on a stoichiometry method; and sample quality detection comprising the steps of acquiring a dynamic spectrum of a new to-be-detected sample, calculating a two-dimensional correlation spectrum, bringing into the detection model, and analyzing to obtain a sample quality detection result. Based on the LED, the improvement on a quality detection system is relatively small, the cost is low, besides, rapid and effective high-precision detection can be satisfied, and the practicability is relatively high.

The embodiment of the invention provides an array substrate and a preparation method thereof, and a display panel. The array substrate comprises a first electrode, a first insulation layer, a data line, a second insulation layer and a second electrode which are arranged on the substrate in order; two sides of the data line are provided with isolation via holes, and the second electrode is connected with the first electrode through the isolation via holes. A shielding electrode connected with a common electrode is arranged and shielding walls are formed at two sides of the data line to shield the capacitance coupling effect between the pixel electrode and the data line and eliminate the pixel voltage abrupt change caused by the coupling capacitance between the data line and the pixel electrode to the most extent. The array substrate and the preparation method thereof, and the display panel are simple in preparation process, low in production cost and convenient to implement.

The invention relates to refrigeration equipment, which comprises a box body (1), a door (2) and a hinge assembly (3). The hinge assembly (3) comprises hinge frames (31, 41), a hinge shaft (32) and block bars (30, 40, 50) fixed to the hinge frames (31, 41); and the block bars (30, 40, 50) are used for limiting a maximum opening angle of the door (2) relative to the box body (1). The block bars (30, 40, 50) are suitable for moving in a horizontal direction along the hinge frames (31, 41) so as to adjust the maximum opening angle of the door (2). A user can automatically adjust the block bars (30, 40, 50) to move in the horizontal direction according to a requirement of an installation space, so that the maximum opening angle of the door (2) relative to the box body (1) is changed.

The invention relates to the technical field of metallurgy, and particularly discloses a hot-rolled wire rod for a 90-kilogram-grade welding wire and a production method thereof. The hot-rolled wire rod comprises the components of C, Si, Mn, Ni, Mo, Cr, V, Ti, Al, N, Zr and the balance Fe and inevitable impurities. The hot-rolled wire rod for the 90-kilogram-grade welding wire is prepared throughthe procedures of steelmaking, continuous casting, heating, rolling, laying and cooling. According to the method, through component adjustment and process optimization, the prepared hot-rolled wire rod meets the requirements of the wire rod for the 90-kilogram-grade welding wire, a ferrite+pearlite structure suitable for drawing is obtained, and the strength, toughness and plasticity of the wire rod are good so that the annealing process can be omitted in the welding wire processing process, welded deposited metal has moderate strength, the low-temperature impact energy is good, the productionefficiency is high, and the wide application prospect is achieved.

The invention relates to the technical field of metallurgy, and particularly discloses a hot-rolled wire rod for a 70-kilogram-level welding wire and a production method thereof. The hot-rolled wire rod comprises the following components: C, Si, Mn, Ni, Mo, Cr, V, Ti, Al, Zr and the balance of Fe and inevitable impurities, and the hot-rolled wire rod for the 70kg-grade welding wire is prepared through the procedures of steelmaking, continuous casting, heating, rolling, spinning and cooling. Component adjustment and process optimization are carried out, the prepared hot-rolled wire rod meets the requirements of a wire rod for a 70-kilogram-level welding wire, and a ferrite and pearlitic structure suitable for drawing is obtained; the strength, the toughness and the plasticity of the wire rod are good; and therefore the annealing procedure can be omitted in the welding wire machining process, deposited metal obtained after welding is moderate in strength, good in low-temperature impact energy and high in production efficiency, and the wide application prospect is achieved.

The invention discloses a double-layer water rod assembly structure for a supercritical water cooled reactor, belonging to the field of parts and components of reactors. The double-layer water rod assembly structure is characterized in that a double-layer water rod structure is adopted in the supercritical water cooled reactor, and a layer of water rod wall is added, that is to say, two ends of a channel between a hanging basket and the outer wall of the assembly are communicated with an upper chamber and a lower chamber respectively; the lower end of the water rod inner pipe wall of the double-layer water rod is communicated with the lower chamber, and the upper end of the water rod outer pipe wall of the double-layer water rod is communicated with the upper chamber; a fuel channel is formed among the water rod outer pipe wall, the assembly outer wall and surfaces of fuel rods; and the fuel rods are vertically arranged in the fuel channel. Therefore, axial temperature distribution which is more uniform that that of a mode of adopting a single-layer water rod is obtained by changing the flowing mode of a working medium, and further, the axial power of the double-layer water rod assembly is distributed more uniformly. Therefore, the maximum fuel canning temperature under the same average heat-flow density condition can be reduced; and according to the double-layer water rod assembly structure, the safety of the reactor can be improved, and a space of promoting the total power of the reactor can be enlarged at the same time. The double-layer water rod assembly structure disclosed by the invention has the characteristics of simple structure and little improvement on original design.

The invention discloses a circuit for measuring the internal resistance of a single battery in a power battery box. The measurement circuit comprises an AC excitation circuit, an AC voltage sampling circuit and a main control circuit. The AC excitation circuit inputs alternating-current excitation to the single battery; the AC voltage sampling circuit is used for detecting an alternating-current voltage response signal of the single battery under the action of alternating-current excitation; the output end of the AC voltage sampling circuit is connected with the main control circuit; and the main control circuit calculates resistance data of the single battery according to alternating-current excitation current and collected alternating-current voltage. According to the invention, the internal resistance data of each single battery in the battery box can be automatically detected, and data support is provided for the work of a battery management system; the circuit for measuring the internal resistance of the single battery is simple and reliable in structure and less in hardware improvement, and can be conveniently integrated in the battery management system or the battery box soas to facilitate realization of online detection.

The invention discloses an oil-cooled motor with an oil path structure and a motor oil path cooling system, and belongs to the technical field of motors. The motor comprises a stator and a rotor; a stator iron core is provided with an armature main assembly lug arranged in the axial direction of the stator iron core and an armature auxiliary assembly lug arranged at one end of the stator iron core. The stator core is assembled in the motor when the armature main assembly lug is located at the top of the stator core; main oil pipes which are arranged along the axial direction of the stator coreare arranged on two sides of the armature main assembly lug at the top of the stator core; a plurality of small holes are formed in the surfaces of the main oil pipes and used for spraying cooling oil in the main oil pipes to an outer surface of the stator core and the outer surfaces of windings at two ends of the stator; cooling oil cavities for cooling oil to enter are formed between windings at two ends of the stator and the outer sides of dynamic balance plates at two ends of the rotor; front and rear bearing chambers of the motor are provided with cooling oil introduction channels; an oil pan of the motor converges the cooling oil passing through the stator iron core, the windings and the bearing chambers. The system comprises the motor, an oil pump and an oil-water radiator. The motor and the power system can be widely matched with reduction gearboxes of different systems, and the reliability and economy of the power system are improved.

The invention belongs to the technical field of composite materials, and discloses a nanoparticle reinforced metal-based composite material and a preparation method thereof. The method comprises the steps that firstly, surface modification and pre-dispersion are carried out on nanoparticles, so that the nanoparticles are in a relatively dispersed state before ball milling; low-speed ball milling in the initial stage of ball milling is carried out, and materials are fully mixed evenly; in the middle stage of ball milling, metal powder flaking and nanoparticle embedding mechanisms are combined, the work hardening phenomenon of flaky metal powder is reduced and eliminated through stress relief annealing, and the problems that nanoparticles are disembedded on the surface of the flaky metal powder and the load is small are solved; and finally, the rotating speed is reduced, the flaky powder with the large radius-thickness ratio is mechanically crushed through grinding balls, and then fine-scale-shaped nanoparticle reinforced metal-based composite powder is obtained through pressing, sintering and densification treatment. Through the steps of surface modification, pre-dispersion treatment, stress relief annealing added in the ball milling process and the like, the problem of work hardening of the metal powder is effectively solved, nanoparticles are dispersed more uniformly, and the loading capacity is higher.

The invention discloses a vapor recycling water heater. The vapor recycling water heater comprises a hot water cavity. A heater is arranged in the inner portion of the hot water cavity. A water inlet and a vapor opening are arranged in the wall of the hot water cavity. The water inlet is arranged in the bottom of the hot water cavity. The vapor opening is arranged in the upper portion of the hot water cavity. The water heater is arranged in the middle of the hot water cavity. A heat energy recycling device is arranged on the vapor recycling hot water device at the same time. A vapor pipe is arranged on the hot energy recycling device. A cold water pipe is sleeved on the outer portion of a vapor pipe. The vapor pipe is communicated with the vapor opening in a sealing mode. The cold water pipe is communicated with the water inlet in a sealing mode. According to the vapor recycling water heater, the quantity of heat of the vapor can be used repeatedly, thus the vapor recycling water heater is energy-saving.