62results about How to "Achievable" patented technology

The invention discloses a measurement calibration and polarimetric calibration device (BPARC) for a target bistatic radar cross section (RCS) and a measurement calibration method thereof. The device is a double-antenna active polarization radar calibration (PARC) device with a biaxial rotation control mechanism, can simultaneously solve the problems of target bistatic RCS calibration and target bistatic polarization scattering matrix measurement calibration under the bistatic scattering measurement condition. As the bistatic RCS measurement calibration device, the BPARC can overcome the defects of the existing technology and device and ensures the stability of an RCS calibration value under different bistatic angles. As the polarimetric calibration device for bistatic polarization scattering matrix measurement, the BPARC retains all advantages of the existing single-station polarimetric calibration PARC device and also can be used for bistatic polarimetric calibration. The functions of bistatic RCS calibration and bistatic polarimetric calibration of the traditional PARC are increased.

The invention discloses a service management method used for a gigabit passive optical network. Step S102, the network administrator configures the service attribute for the service supported by an optical network unit / optical network terminal; Step S104, an optical line terminal receives the service attribute so as to acquire the service type supported by the optical network unit / optical network terminal when the optical line terminal is connected to the optical network unit / optical network terminal; and Step S106, if the optical line terminal supports the service, then the creating is executed and the correlation between various management entities are established. In a GPON system, a simple and practical service management method for managing all the ONU / ONT services through the OMCC channel and the standard MIB object at the OLT side, simplifying the complicated GPON service and uniformly managing various service types of various ONUs / ONTs is given.

The invention provides a flame-retardant shrinkable anticorrosive packaging film which is composed of a two-layer or three-layer structure, wherein, the inner layer contains an anti-rusting agent with an anticorrosive protection function on metal; the middle layer and the outer layer contain flame retardants with a flame retardance function; and the layers contain plastic particles with heating contractibility. The packaging film is formed by mixing raw materials according to a certain type and proportion, heating and then performing coextrusion blow molding on double-layer or three-layer coextrusion film blowing equipment according to a certain temperature condition and at thickness ratio, and the obtained packaging film is a novel multifunctional metal anticorrosive protective packaging material. The flame-retardant shrinkable anticorrosive packaging film has the characteristics of heating contractibility, excellent anti-rust property, skin packaging, good tightness, good fastness, flame retardance, being convenient in automated operation, and being economical and practical; and the packaging film can be widely applied to anticorrosive protective package of products such as auto parts, mechanical equipment, hardware tools, metallurgic products, aerospace products, electronic equipment, weapon equipment and the like during the storage and transportation period, thus being a novel material applicable to the current metal protective packaging field.

The invention provides a system for automatically detecting a fight behavior. A method for detecting and monitoring the fight behavior comprises the following steps of: retrieving a plurality of continuously monitored images; processing the plurality of images and partitioning a dynamic main body; generating a movement historical image to acquire a short-time dynamic progress of the dynamic main body; judging whether a value acquired by the movement historical image and a preset threshold value are comprised in a preset monitoring behavior event; and triggering when the preset monitoring behavior event reaches the threshold value, and sending a warning reaction situation out. By the system, the characteristic of the fight behavior is analyzed from a macroscopic angle without pre-establishing a background; therefore, a camera with lower resolution can be used for accurate detection; and a detected result cannot be influenced by the change of light sources.

The invention discloses a centralized safety control method and a centralized safety control device. The method comprises the steps as follows: a central node checks identity with the intelligent device after monitoring that some intelligent device accesses a local network, and stores a digital security certificate and a public key of the intelligent device after the check is passed, and adds the intelligent device in a safety equipment list; the central node generates a conversation key for the intelligent device and transmits the conversation key to the intelligent device; the central node transmits the safety equipment list, which has been encrypted by using the conversation key to the intelligent device based on an inquiring request of the intelligent device so that the intelligent device could select target equipment for conversation; the central node transfers the conversation information interacted by the intelligent device and the target equipment while the intelligent device initiates a conversation with the selected target equipment. The method and the device of the invention change a point-to-point security policy into centralized safety control, thereby reducing the performance requirement, operation complexity and cost of the intelligent device.

The invention relates to a variable diameter screw propeller, which comprises propeller blades (3) and propeller hubs (4), and further comprises a rod connection mechanism (1), a drive mechanism (2), a propeller cap (5), a slide support mechanism (6) and a locking releasing mechanism (7), wherein the propeller cap (5) is arranged on the propeller hub (4), and provides installation spaces and top supports for the rod connection mechanism (1), the drive mechanism (2), the slide support mechanism (6) and the locking releasing mechanism (7), the drive mechanism (2) and the slide support mechanism (6) are fixed on the propeller hub (4), an output shaft of the drive mechanism (2) is connected with the rod connection mechanism (1), the propeller blades (3) are fixed on a guide outlet end of the rod connection mechanism (1), the bottom of the guide outlet end of the rod connection mechanism (1) is connected with the slide support mechanism (6), the slide support mechanism (6) provides support and guide for the rod connection mechanism (1), the drive mechanism (2) drives the rod connection mechanism (1) to drive the propeller blades (3) along the slide support mechanism (6) to stretch along a diameter direction of the screw propeller so as to change a diameter of the whole screw propeller disc, and the rod connection mechanism (1) is locked through the locking releasing mechanism (7) after the propeller blades (3) stretch in place.

The invention relates to an injection molding technology and aims at providing servo energy-saving driving control system and method of an injection molding machine. The method comprises the steps as follows: a processor module receives a given pressure value and a given speed value of a hydraulic system as well as a real-time pressure value P of the hydraulic system of the injection molding machine, and obtains a speed control signal U of an injection molding hydraulic servo system through a built-in computing and controlling program; an analogue output module converts the speed control signal U into an analogue signal and then outputs the analogue signal to an injection molding hydraulic servo system module for controlling; and the processor module works in a speed control mode or a pressure control mode, and a servo driver always works in the speed control mode. The servo energy-saving driving control method provided by the invention has the advantages of simplicity, reliability, no need of a speed sensor, feasible control system and realizability. The key point of the invention is that the control problem of servo driving of the hydraulic system of the injection molding machine is solved, accurate closed-loop control of the hydraulic system is decoupled from pressure and speed control, the speed and the pressure can be accurately controlled, and the switching process is stable without overshoot.

The invention relates to an automatic detection and early warning system for a numerical control machine tool and the operation method of the automatic detection and early warning system. The automatic detection and early warning system comprises an input unit, a transmission unit, an analysis and calculation unit, a coordinate detection unit, a coordinate comparison unit and an alarm unit. The input unit is used for reading a processing program into a machine tool, andconverting the processing program into a readable analog signal. The analysis and calculation unit is used for reading the processing program, andcalculating a theoretical coordinate value. The transmission unit is used for driving the mechanical part of the machine tool to move through the readable analog signal. The coordinate detection unit is used for detecting the actual coordinate value of the mechanical part of the machine tool in real time. The coordinate comparison unit is used for comparing the theoretical coordinate value with the actual coordinate value. If the difference value between the theoretical coordinate value and the actual coordinate valueis within the range of a threshold value A, the numericalcontrol machine tool works normally. Otherwise, the alarm unit is started to give an alarm. According to the invention, the program data can be analyzed in advance when the system works normally. Theon-line real-time detection is carried out, and the machining state is monitored in real time. The tool damage of the numerical control machine tool can be effectively prevented, and the operation safety and the operation reliability are improved.

The invention discloses a quantum identity authentication method and an application method of the quantum identity authentication method in a quantum key distribution process. Mutual identity authentication between two participants can be realized. The security is based on a quantum mechanics basic principle and is independent of the computation capability of an attacker. When the method is realized, technologies such as quantum storage, quantum entanglement and multiparticle measurement do not need to be used, so the scheme is has the characteristics of simpleness and easiness in realization. Compared with the prior art, the method has the positive effects that the method provided by the invention is clear in principle, a realization method is simple, the security is high, and an entanglement source and multiparticle measurement and quantum storage technologies do not need to be used, so the realization can be achieved under an existing technological condition. Related authentication schemes can be applied to establishment of a high-security quantum identity authentication system with the quantum computation resistance capability and also can be applied to a current mainstream quantum key distribution system, thereby realizing the high-security identity authentication between two communication parties.

The invention provides a nonlinear detecting method of a repeater power amplifier. The method can monitor a nonlinearity and digital pre-distortion rectifying result of the power amplifier and judge whether the result is reasonable or not by virtue of a three-order intermodulation valve of a double-tone signal, and the method comprises the following steps: signal preprocessing, FFT simplifying after determination of resolution ratio and intermodulation calculation. Besides a repeater, the nonlinear detecting method is also applicable to a plurality of wireless communication systems comprising a large-power power amplifier. The nonlinear detecting method has the beneficial effects that the intermodulation simplifying detecting algorithm complexity in the numeric field is low, the operating rate is quick, the implementability is achieved, an instrument is not required by the algorithm, nonlinearity degree of the power amplifier can be monitored visually by a repeater system, and the linearity rectifying degree of the power amplifier can be monitored by a digital pre-distortion algorithm simultaneously. By utilizing the nonlinear detecting method, the intermodulation magnitude can be calculated conveniently, the algorithm complexity is low, the source consumption is less, the method is easy to realize, and the stability of the repeater system and the digital pre-distortion algorithm is improved simultaneously.

The present invention discloses a system and a method for visual identification based on robot tracking, and relates to the field of robot visual control technology. The system comprises a light source mobile robot and an image collection mobile robot. The light source mobile robot is provided with an infrared luminescent tube circuit board; the image collection mobile robot is provided with a camera, and the front end of the camera is provided with an infrared transmission piece; and the image collection mobile robot is further provided with a control unit configured to extract the shape of alight source and follow the light source mobile robot. The camera having infrared transmission piece filtering is employed to detect a pre-arranged infrared luminescent mechanism in an environment, and resistance on infrared light interference in the environment is achieved through shape filtering; and the employed infrared transmission piece, an infrared light emitting diode and the USB camera are low in price, and therefore, the shape filtering processing speed employed by a software algorithm is fast, the implementation is simple, and the computational efficiency is improved.

The invention relates to a large frequency deviation estimation and correction method for quadrature frequency division multichannel signal carriers, comprising the following steps: time domain frequency deviation estimation of frequency deviation, and time domain frequency deviation correction according to estimation results. The invention also comprises the following steps: smooth processing of the time domain frequency deviation estimation is performed, namely a low pass filter is adopted to smooth down peak values and valley values of time domain frequency deviation estimation values; after the time domain frequency deviation correction, Fourier transformation is performed; frequency domain frequency deviation estimation is performed on transformation results; frequency domain frequency deviation estimation results or time domain frequency deviation estimation results after smooth processing participate in time domain frequency deviation correction once again. The method of the invention overcomes limitation of the prior frequency domain algorithm on frequency deviation estimation and has the advantages of capability of processing large frequency deviation, capability of guaranteeing smooth signal processing, capability of quickly tracking frequency deviation caused by movement, and capacity of being conveniently realized in an integrated circuit design.

The invention discloses an intelligent toothbrush tooth brushing way detection method and an intelligent toothbrush tooth brushing way detection system. The intelligent toothbrush tooth brushing way detection method comprises: 1) arranging an acceleration sensor and a data processing unit in a toothbrush, and transmitting the collected three-axis acceleration data AccX, AccY and AccZ to the data processing unit; and 2) calculating the change degrees of AccX, AccY and AccZ by using the data processing unit, wherein the current tooth brushing way is judged as the Bass Method if the three acceleration data are changed and the change degrees do not exceed the set thresholds or the sum of the three degrees of the three acceleration data is less than a set Bass threshold, the current tooth brushing way is judged as the horizontal brushing if the change degree of AccY is large than a set horizontal brushing threshold, and the current tooth brushing way is judged as the vertical tooth brushing if the sum of the change degrees of AccX and AccZ is greater than a set vertical brushing threshold, or the current tooth brushing way is judged as the vertical tooth brushing if the change degree of AccZ is greater than a set vertical tooth brushing. The method and the system of the present invention have high practicability.

The invention relates to a method and a device for generating a car backing assisting line. The method includes: acquiring preset amount of first key points on the axle linear trajectory before car turning in a three-dimensional coordinate system; determining second key points corresponding to the first key points after car turning according to the turning angle of a car; determining a first group of third key points and a second group of third key points corresponding to the preset amount of second key points according to the axle curve trajectory; projecting the first group of third key points and the second group third key points to obtain projecting points; connecting the projecting points to generating the car backing assisting line. The method is simple in algorithm and good in achievable effect, and computing speed and the processing efficiency of a car backing assisting system are increased.

The invention is a method of preparing zinc oxide rodlike monocrystalline nano-probe, a method of preparing zinc oxide rodlike monocrystalline nano-probe wiht tip-end curvature radius less than 5 nm, a. selecting the clean polished and extended basal slice of (0001) or (112-0)-directional sapphire as a substrate; b. using a splashing device to deposit a layer of metal particle film at a nominal thickness of 1-10 nm on the substrate; c. keeping the surface with the metal particle film facing upward, horizontally fixing the substrate on a ceramic ship holding metal zinc powder, and keeping the distance between the zinc powder and the substrate at 2-10 mm; d. placing the ceramic ship in a horizontal tube electric heating furnace, charging in argon gas from one end of the heating tube to act as protective gas and carrier gas, and discharging gas to the atmosphere from the other end; e. rapidly heating the heating tube to 450-600 deg.C, making physical gas-phase deposition reaction at this temperature for 20-120 minutes, then stopping heating, and making the heating tube naturally cool to room temperature.

The present invention provides self-adapting filter and echo neutralization unit accomplished utilizing said self-adapting filter, suitable for communication field. Said self-adapting filter is used for outputting simulating echo according to filter and providing compensation to circuit echo. The present invention can speed up self adaptation rate of convergence, improving echo neutralization unit performance without increasing calculated amount and realizing complexity.

The invention discloses a control method of a smart device. The control method includes the following steps that: A, a virtual device management APP is generated according to operation on the smart device by a user in different time periods and target attributes corresponding to the operation; B, and the virtual device management APP is utilized to control the smart device in corresponding time periods. According to the control method of the smart device of the invention, a dynamic virtual device association rule is constructed based on statistics and analysis of the operation of the user and the target attributes in the aspect of time and according to an ontology model of the device; the virtual device management APP can be generated dynamically according to the rule; and the user can manage a plurality of devices fast and conveniently through utilizing the virtual device management APP. With the control method of the smart device of the invention adopted, the user can manage the plurality of devices fast and conveniently through utilizing the virtual device management APP, and therefore, complex operation on a plurality of APPs by the user can be avoided, and the user can be satisfied. The control method has the advantages of excellent user experience and high efficiency.

The invention discloses an automatic voltage control system and a control method considering reactive power price compensation, Through the simulation calculation of each section of the actual power network, In order to minimize the cost of network loss and reactive power price, the automatic voltage control (AVC) of inverter phase modulation operation with reactive power price compensation is realized by making full use of the reactive power regulation capacity of renewable energy, which improves the safety and stability of power system.

The invention relates to a blind frequency detector processing method based on a cross product algorithm. The method includes calculating point product component and cross product component according to the data located at the intervals of m and utilizing the cross product algorithm to calculate the output quantity of a frequency detector, wherein m is an integer larger than 1, and the specific m value can be arranged according to the system performance requirement to obtain the corresponding frequency discrimination gain. The frequency capture range of the method is not affected by the modulation phase of received signals, the residual frequency error shaking performance can be well acquired, and the effects of simple structure and low resource consumption can be acquired.

The invention discloses stirred fermented milk and a preparation method thereof. The stirred fermented milk comprises the following raw materials in percentage by mass: 1.0-5.0% of puffed rice flour,0-20.0% of rice flour endured enzymatic hydrolysis, 0.001-0.006% of a fermentation agent, and the balance of raw-material milk so as to ensure a total percentage of 100.%. The preparation method of the stirred fermented milk comprises the following steps: (1), uniformly mixing the raw-material milk, the puffed rice flour and the rice flour endured enzymatic hydrolysis so as to obtain a material A;(2), homogenizing the material A, carrying out sterilization, and carrying out cooling so as to obtain a material B; (3), inoculating the fermentation agent into the material B, and carrying out fermentation so as to obtain a material C; and (4), filling the material C, carrying out cooling, and carrying out post-curing so as to obtain the stirred fermented milk. According to the preparation method of the stirred fermented milk, the rice flour with relatively high addition amounts jointly takes part in the fermentation without addition of additives so that the prepared stirred fermented milkis refreshing in flavor, mellow in rice aroma, and fine and smooth in texture; moreover, the stirred fermented milk is stable in tissue state and free of milk-water separation within shelf life. And thus, existing production and preparation methods are met, and large-scale production is suitable.

The invention discloses a marine drilling riser connecting device, an assembling method and a marine riser structure, and belongs to the technical field of marine oil drilling devices. The device comprises at least two connecting blocks arranged at a flange plate connecting position of a marine riser; the connecting blocks are assembled on the outer side of the flange plate connecting position of the marine riser in a combined mode; assembling grooves used for assembling flange plates are further formed in the inner sides of the connecting blocks; and the connecting blocks are assembled on the flange plates through the assembling grooves and then are fixedly assembled on the flange plates through bolts. The problem that the contact surfaces at the connecting positions of traditional marine risers are not attached and are damaged, and finally leakage accidents of marine risers are caused is effectively solved, attachment of flange surfaces at the connecting positions of the flange plates is effectively promoted through the split design of the connecting blocks and the design of the assembling grooves, and a better axial limiting effect is provided.

The invention discloses a movable spring armature component and a clapper relay thereof. The movable spring armature component comprises an armature, an injection molding part and a movable spring, wherein an upper part of the armature is provided with a matching part which is matched with a knife edge of a yoke of a magnetic circuit part of the relay, and one surface of the armature can be matched with a pole surface of an iron core of the magnetic circuit part of the relay through matching with the yoke; two sides of the armature are respectively provided with a bending part which is bent towards the direction deviating from one surface of the armature, and the injection molding piece is coated on the other surface and the side surface of the armature and completely coated on the bendingparts so as to be stably combined with the armature. The movable spring armature component provided by the invention has the characteristics of small component size, simple production and assembly, convenient realization of automatic production, small influence of accumulated assembly tolerance among multiple groups of movable springs, and good parameter consistency of batch production of finished relays.

The invention relates to the field of radio-frequency identification and discloses a two-phase signal processing circuit of a rotary encoder and a signal processing method thereof. The two-phase signal processing circuit includes a signal conversion unit, a pulse generating unit and a triggering unit. An input end of the signal conversion unit is used as an input end of the two-phase signal processing unit. An output end of the triggering unit is used as an output end of the two-phase signal processing circuit. The signal conversion unit processes two-phase signals and outputs serial data. The pulse generating unit processes the serial data and outputs pulse signals. The triggering unit latches the pulse signals and outputs rotary pulse output signals. The signal conversion unit includes a gate circuit. The pulse generating unit includes a trigger. The triggering unit includes a trigger. The two-phase processing circuit of the rotary encoder is capable of processing the two-phase signals output by the rotary encoder into stable and independent pulse signals through use of the simple circuit units so that the structure of the two-phase signal processing circuit of the rotary encoder is simplified and the cost is reduced.

The invention relates to a remote solid rocket instantaneous orbit drop point closed-loop optimal feedback guidance method. The method comprises the following steps of calculating a drop point range angle and a current drop point radius vector derivative according to a position vector, a velocity vector and the acceleration of a rocket, and calculating a current drop point radius vector and a droppoint control motion vector according to the drop point range angle; and calculating a feedback control equation coefficient according to the current drop point radius vector derivative and the droppoint control motion vector, obtaining the optimal control command acceleration, and finally obtaining a command gesture. According to the remote solid rocket instantaneous orbit drop point closed-loop optimal feedback guidance method provided by the invention, due to the feedback design form, the guidance law has very strong robustness to errors from various sources.

The invention discloses a warning automobile data recorder system capable of automatic warning. The automobile data recorder system mainly adopts the technical scheme of adding the warning function of the recorder based on the traditional basic functions such as video recording and trajectory recording. In combination with the existing widespread mobile phones and 3G and 4G technologies, the warning function in the following two aspects can be realized: the recorder is connected with an automobile communication system or the mobile phone system of the owner of an automobile and the two phones are used for automatically dialing the alarm call; as the existing mobile phone and automobile communication system both have powerful GPS positioning function, the GPS information of an accident site and the pictures of the accident can be sent to an emergency center by use of Wechat and the like, and then rescue workers can hurry to the accident site immediately and the rescue of the accident can be immediate.

The invention discloses a quantum measurement method for laser power. According to the quantum measurement method, atomic characteristics and an atomic frequency scale system are utilized, direct measurement of the laser power is converted into measurement of an atomic transition frequency, and the quantum measurement method is combination of an atomic spectrometry technique and optical power measurement. Compared with an existing method, the quantum measurement method has innovation in principle. The achievable measurement precision of an existing measurement method is limited, and the reported optimum value is in an order of magnitude of 10<-4> and cannot meet the increasing precision measurement requirements. According to the quantum measurement method, the measurement precision is improved, can be improved by 1-2 orders of magnitude or more theoretically and can reach the order of magnitude of 10<-5> to 10<-6>. The measurement capability on the laser power is improved, the opticalmeasurement capability is improved and the development of the laser measurement industry can be promoted.

Aiming at the problems existing in the adhesion of asphalt at present, the inventor establishes a four-ball friction test evaluation method for the adhesion performance of asphalt and coarse aggregate, and a four-ball friction testing machine is adopted to carry out a friction test on boiled coarse aggregate balls coated with asphalt; and then the area of the rotating material ball sample before friction and the size of a friction spot after friction are measured through an MATLAB image processing technology, and quantified to obtain the adhesion grade between the asphalt and the coarse aggregate. According to the method, a new evaluation benchmark is established, the embedding extrusion effect between the coarse aggregates is effectively avoided, the adhesion can be directly and quantitatively evaluated, the method has better scientificity and accuracy, a new method and thought are provided for researching and evaluating the adhesion between the asphalt and the coarse aggregate, and the method has the characteristics of simplicity, rapidness and accuracy.