164 results about "Time moment" patented technology

A method and a system for radar-based gauging of a filling level of a filling material is disclosed, wherein the tank has at least one interfering structure. The method comprises: transmitting at a first time moment a microwave signal towards the surface of the filling material; receiving microwave signals as reflected against the surface of the filling material and as reflected against said at least one interfering structure; calculating based on propagation times of the transmitted and reflected microwave signals at least two distances to reflective surfaces in the tank; and repeating at a second time moment the transmitting, the detecting and the calculating, wherein said first time moment is timely separated from said second time moment. Based on the several repeated measurements, the distance to the surface of the filling material is determiend as the calculated distance that exhibits the greatest change between said first and second time moments. Based on this time difference analysis, it is possible to discinguish moving surfaces very easy and acurate. The method is specifically advantageous in overfill or high level alarm systems.

The invention discloses a driving trajectory predicting system integrating a kinematic model and a behavioral cognition model. The driving trajectory predicting system is characterized in that an interactive mixing module subjects the prediction result of each prediction module at a last time moment to interactive mixing to output a mixed result used for prediction at a next time moment; the prediction module comprises a behavioral cognition trajectory prediction module based on behavioral cognition and a motion trajectory prediction module based on kinematics; the behavioral cognition trajectory prediction module and the motion trajectory prediction module performs prediction according to the mixed result output by the interactive mixing module and output respective prediction results including a vehicle position and a covariance matrix; a fusion updating module fuses a final prediction result according to the prediction results, updates a weight coefficient, and outputs a vehicle position and a covariance matrix at a certain time moment in the future. The driving trajectory predicting system can continuously estimate the position state and the driving behavior of the vehicle in a vehicle driving process, predicts a driving trajectory, and provides assistance for intelligent driving decision.

The invention discloses a display panel, a driving method thereof and a display device. The display panel is divided into a display area and a surrounding area surrounding the display area, multiple grid lines extending along a first direction and multiple data lines extending along a second direction are arranged in the display area of the display panel, a multiway selector is arranged in the surrounding area, to which the extending direction of the data lines point, of the display panel, the multiway selector controlled by grid line opening signals input by a grid line switch control line inputs grid line signals output by a source electrode driving unit to corresponding grid lines at different time moments, and the multiway selector controlled by data line opening signals input by a data line switch control line inputs data signals output by the source electrode driving unit to corresponding data lines at different time moments. Functions of a grid electrode driving unit are integrated in the source electrode driving unit and realized through the multiway selector, so that occupation of the surrounding area on two lateral sides in the display panel can be avoided, realization of narrow frame designing is facilitated, and visual effect of display pictures is improved.

System for simulating events in a real environment containing static objects and dynamic objects: a) position locating unit for continuously determining the real environment the position of the dynamic objects in relation to the static objects within a time period in which the even takes place; b) storage elements for storing data describing the dynamic and static objects of the environment; c) processing elements for processing (b1) data from the storage elements describing the static and dynamic objects (b2) data from the position locating unit indicating at a certain moment the mutual positions of the static and dynamic objects of the environment, the processing elements being loaded with simulation software; d) display elements for displaying a simulated view from a selected viewpoint on the simulated environment as a result of the processing by the processing elements; e) control elements to repeat the functioning of the processing and display elements for a range of consecutive time moments which together determine the above-mentioned time period wherein the position locating unit includes a satellite navigation system, or a thereto-related system.

The invention provides a method for fusing ocean current observation data of an unmanned undersea vehicle (UUV), which comprises the following steps of: 1, obtaining ocean current profile data, when the UUV underwater navigates at a certain depth, obtaining an ocean current profile with a certain water layer thickness at the upper part or lower part of the UUV; 2, filtering the ocean current profile data, filtering the obtained ocean current original data, eliminating a wild value, carrying out smooth correction on a measured random error; 3, carrying out time registering on the ocean current profile data, reducing asynchronous data into synchronous data under the same time moment; and 4, reducing position information of the UUV, starting from one known coordinate position of the UUV to reduce a coordinate position of the next time according to the navigation direction, the navigation speed and the navigation time of the UUV at the coordinate position; and 5, fusing the ocean current profile data, converting longitude and latitude position information obtained from the reduction of the position information into ASCII (American Standard Code For Information Interchange) codes, and inserting into corresponding positions of an ADCP (Acoustic Doppler Current Profiler) data packet. According to the invention, accurate and complete ocean current profile information can be obtained under a geodetic coordinate system.

A method for acquiring the motion information of coronary artery, which belongs to the field of medical detection technology, is used for solving the problem in acquiring the motion information of heart. The technical scheme is that a 3D motion estimation method based on elastic registration is adopted after achieving 3D reconstruction of branch skeleton of main blood vessels at each moment in X-ray coronary artery angiogram sequences; the motion of blood skeleton is transformed to be matched with skeleton lines at continuous time moments; the motion vector and the motion trajectory of each blood skeleton point in cardiac cycle are calculated; and the motion information including global and the local motion parameters of the coronary artery in the cardiac cycle is extracted according to the estimated motion vector of each blood skeleton in the image sequence. The method has the advantages of high accuracy in extracting the motion information of blood vessels, convenient operation and high work efficiency.

The essence of the invention is in that when making a digital blind RSA-signature a new technique for blinding an initial data by a RSA-encryption and corresponding technique for unblinding the signed blinded data are employed, which gives the possibility to use an unlimited number of kinds of the signature in electronic systems of the mass scale service. The untraceability is ensured by a corresponding choice of the randomized exponent R, RSA-key used in RSA-encryption the initial data, and by the public module N properties verified in an arbitrary time moment. In so doing, N=P·Q, where P and Q are secret prime factors, and R is multiple to N−1. In other variants of the invention the diversity of kinds of the signature is set by limitings on multiplicities of public exponents, said limitings being chosen prior to blinding the initial data. The apparatus to realize the method for making a digital blind RSA-signature comprises a blinding unit based on a modular exponentiator, and a corresponding unblinding unit.

The present invention relates to the wind power engineering and to the method of controlling a yaw angle of the wind turbine, equipped with a horizontal rotor shaft as well as to the wind turbine for implementing the method. According to the method of the present invention, the time difference between the time moments when the rotor blades are in the lower vertical position, the said time moments derived from the reference signal of the sensor connected to the rotor shaft, and the time moments when the blades are on one line with the wind direction and the tower, the said time moments_derived from the periodic signal of the spurious amplitude modulation generated by the AC generator and caused by aerodynamic interaction between the blades and the tower, is used as the indication of actual position of the wind turbine rotor relative to the wind direction. The wind turbine of the present invention comprises a yaw controller including the functional units suitable for generating a control signal for rotating a nacelle of wind turbine based on the given time difference in order to compensate the existing yaw error.

The invention discloses a copying and splicing method of a large-size plane diffraction grating, relates to the technical field of diffraction grating manufacturing and solves the problem that an existing grating splicing method needs to repeatedly and continuously adopt high-accuracy control adjusting technology and is high in requirement on stability of a support and the problem of drift error existing between an adjusting system and a locking system when an exposure method is adopted. The copying and splicing method includes: utilizing a grating mother set to copy in an area adjacent to a grating blank for two times at different time moments; copying a first grating in a left-side area of the grating blank; copying a second grating in a right-side area adjacent to the left-side area of the grating blank; detecting splicing errors of the second copying grating and the first copying grating by a splicing error detection system; detecting two-dimensional splicing errors by an error detection system when the second copying grating is spliced. When the grating is in use, a multi-dimensional mechanical adjusting frame is not needed to adjust posture of the grating in realtime, and the grating can be stored for a long time; only two-dimensional splicing errors need to be detected in the process of splicing, so that difficulty in detection and adjustment is lowered.

The invention discloses a wind power plant probability output power calculation method considering a complex wake effect model in the technical field of the wind power plant output power control. The wind power plant probability output power calculation method comprises the following steps of: initializing a parameter; establishing a wind power plant wake effect model; initializing a simulated age limit n; obtaining the operation state curve of each wind power generation set and a connection cable of the wind power plant with a sequential Monte Carlo simulation method; within the simulated age limit n, respectively simulating the wind speed and the wind direction by Weibull distribution and a wind rose to obtain the wind speed and the wind direction sequence of the wind power plant with the scale of M; meanwhile, initializing time t; according to the wind speed and the wind direction of the wind power plant at each moment, calculating the output power of non-failure wind power generation set of the wind power plant at a corresponding time moment so as to calculate the total output power of the wind power plant; and with a clustering method, processing the total output power sequence of the wind power plant so as to obtain a wind power plant probability output power curve. According to the wind power plant probability output power calculation method disclosed by the invention, the precision of the wind power plant output power model is effectively improved, and the accuracy of the wind power plant probability output model is guaranteed.

The application provides a broadband digital trunking group call method and a device, in order to solve the problem that a trunking terminal has large burden in supporting the digital trunking function and has large consumption in detecting data. The method comprises receiving a group call paging message sent by a trunking paging control channel, and constructing the group call connection; monitoring a physical downlink control channel at each transmission time interval, and acquiring the sending period and the sending time moment of the trunking control channel in a group call establishing message if receiving the group call establishing message on the trunking control channel; setting the sending period of the trunking control channel as the detection interval, and setting the sending time moment as the detection time moment; and monitoring the physical downlink control channel at each detection interval from the detection time moment, and receiving the group call data, which includes the group call establishing message. The application can reduce the burden of the trunking terminal as well as the consumption of the trunking terminal during data detection.

The invention relates to an on-off electromagnetic valve failure warning method and device. The method comprises the steps that during the period that the starting state signal of an on-off electromagnetic valve is the active level and the temperature of a urea solution in a urea tank does not exceed the preset temperature, whether the variation of the temperature of the urea solution in the urea tank between two time moments at an interval of first preset time is smaller than a first threshold value or not is detected; when the variation of the temperature of the urea solution in the urea tank between two time moments at the interval of first preset time is smaller than the first threshold value, a failure warning signal is sent. By means of the technical scheme, during the period that the starting state signal of the on-off electromagnetic valve is the active level and the temperature of the urea solution in the urea tank does not exceed the preset temperature, whether the on-off electromagnetic valve has an abnormal shutdown failure or not can be judged, if abnormal shutdown exits, the failure warning signal is sent, and a user can rapidly check whether the on-off electromagnetic valve has mechanical failures like clamping stagnation of a movable iron core according to the warning signal prompt.

The invention discloses a rapid traffic light detection algorithm applied to a pilotless automobile. The algorithm comprises the steps that 1, red and green candidate areas are selected based on the value of each channel of each collected image, wherein the candidate areas comprise a plurality of communicated domains; 2, according to the traffic light area positions and sensor data in the previous image, and the height range of a traffic light, the red and green area positions of a current image are predicted, and a prediction area is formed; 3, the shape and color of the communicated domains in the current image are recognized, and the communicated domains which have the same shape and color and exist in the prediction areas are the traffic light areas. According to the rapid traffic light detection algorithm, a camera is used for collecting the previous image at the previous time moment and the current image at the current time moment, a sensor is used for collecting the automobile speeds at the two time moments, automobile steering angles at the two time moments, a time change curve and included angles between the horizontal plane and the camera at the two time moments, and by means of the characteristic that the traffic light height meets the national standard, the traffic light color and shape detection purposes of shrinking the detection range and improving the detection precision are achieved.

The invention relates to the remote measurement of the dielectric permittivity of dielectrics. A 3D microwave and a 3D optical range images of an interrogated scene are recorded at the same time moment. The images are digitized and overlapped. A space between the microwave and optical image is measured, and a dielectric permittivity of the space between these images is determined. If the dielectric permittivity is about 3, then hidden explosive materials or components of thereof are suspected. The invention makes it possible to remotely determine the dielectric permittivity of a moving, irregularly-shaped dielectric objects.

The invention discloses a TV control method and system for identifying children users, which relates to the field of electronic technology, and comprises the steps of taking pictures of N shooting moments within a preset time, the first camera and the second camera simultaneously shooting images containing human body Synthesize N three-dimensional stereoscopic images from the images; extract the human body contour in each of the N three-dimensional stereoscopic images and obtain the distance information of the human body corresponding to the human body contour; at least one human body corresponding to the human body contour When the distance information is less than the preset distance, face recognition is performed on the image containing the human body captured by the first camera or the second camera, and if it is recognized as a pre-stored child user, the TV is controlled to execute the pre-stored child protection instruction. The invention is used to identify technical defects such as small detection range and large environmental impact of the TV control method in the prior art. The binocular camera can realize rapid identification of user identity and distance information, and provide corresponding preset protection strategies for child users.

The invention discloses a communication network-based distribution automation system simulation test method. The method comprises a fault simulation software, a novel distribution automation terminal having the simulation function, a time setting device and a communication network. The fault simulation software is arranged in a computer at the background of a main station and is an off-line software. The software can be used for simulating various operation conditions according to the distribution network architecture and the configuration thereof, and generating the electric quantity and the switching value at the installation part of each distribution automation terminal. The novel distribution automation terminal can generate an analog quantity sampling value according to the effective values of the voltage and the current, and the phase input through the communication network. Meanwhile, the novel distribution automation terminal can generate a binary input sampling value according to a binary input state. The fault simulation software sends generated analog data, switching data and preset time data to the distribution automation terminal. After the time setting process of the GPS, the novel distribution automation terminal generates the corresponding data of an analog quantity and a switching quantity at a specified time moment according to the time data. Therefore, the system-level automatic test of the distribution network field can be realized at the background of the main station.

The invention provides a method for recognizing loads of an industrial robot. The method includes the steps that a dynamical equation is input into a dynamics module in a robot controller, and a real-time moment value is obtained; a theoretical current value is worked out according to the real-time moment value; a measured current value and the theoretical current value are compared; if the measured current value and the theoretical current value do not differ much, a motor controls the robot based on a prior control parameter value; and when the measured current value is increased suddenly, the control parameter value of the motor is changed, and the motor controls the robot based on the changed control parameter value. The method can set the control parameters of the industrial robot to be more reasonably under high precision; accordingly, the problem that the regulation time is too long after loads are increased during application of the industrial robot can be solved, and it is ensured that acceleration of the industrial robot has no jerking movement in the moving process.

The invention relates to the forest video monitoring. A method and system are provided for automatically binding a video camera to the absolute coordinate system and determining changes in the video camera binding. In one aspect, the method comprises the steps of: in each of at least two predetermined time moments, aiming the video camera at an object a position of which in the absolute coordinate system centered in a point in which the video camera resides is known at said moment, and determining an orientation of the video camera in a native coordinate system of the video camera; and, based on the determined orientations of the video camera and positions of the object, calculating a rotation of the native coordinate system of the video camera in the absolute coordinate system. The calculated rotation of the video camera's native coordinate system is used to recalculate coordinates of an observed object from the video camera's native coordinate system into the absolute coordinate system. The technical result relates to the improved accuracy of locating the observed object.

The invention discloses an electronic power switch interpolation real-time simulation method based on backward euler-trapezoidal weighted integral method. The electronic power switch interpolation real-time simulation method comprises the steps that at the turn-off time of an electronic power switch, linear interpolation is adopted for determining the accurate switch action time point and relevant state variables; according to the position of the switch action time point in the single-step simulation step size, an ordinary differential equation backward euler-trapezoidal weighted integral method is utilized for building a piecewise function, and the numerical solution of the system whole-step stimulation time point is obtained through integration, wherein in the process, all amounts of the system are reinitialized, and therefore the accurate network topology and system initial value at the time moment are obtained. A traditional problem that the electromagnetic transient stimulation efficiency is affected due to the fact that system topology high frequency changes are caused when the electronic power switch frequently acts during power system electromagnetic transient simulation is effectively solved.

The present invention relates to a system for monitoring light and sound impact on a patient. It comprises a light capturing unit (2) for capturing ambient light at the person over time and a sound capturing unit (3) for capturing ambient sound at the person over time. A threshold unit (6, 9) generates and issues a trigger signal if the brightness of captured ambient light exceeds a brightness level and/or if the sound level of captured ambient sound exceeds a sound threshold. A stress level processor (15) determines the stress level of the person. A storing unit (10) stores, in response to a received trigger signal, snippets of ambient light and ambient sound captured around the time moment of receiving the trigger signal and snippets of stress level information of the person around the time moment of receiving the trigger signal. A review unit (11) is provided to review stored snippets of ambient light, ambient sound and stress level information allowing to identify the root cause of the ambient light and ambient sound stored in a reviewed snippet and to derive guidance information indicating how to avoid such light and/or sound caused by an identified root cause.

The invention provides a deep multi-feature active migration network-based hyperspectral image classification method. The method is used for solving the technical problem that the classification precision is low in the prior art. The method comprises the following steps of acquiring to-be-classified source domain and target domain hyperspectral images; preprocessing to-be-classified source domainhyperspectral images; acquiring a source domain marking sample set, a training sample set, a candidate sample set and a test sample set; constructing a source domain depth spectral feature extractionnetwork, and extracting the depth spectral features of the source domain marking sample set; constructing a source domain depth spatial feature extraction network, and extracting the depth space features of the source domain marking sample set; constructing a source domain depth spectrum-spatial joint feature extraction and classification network; and classifying to-be-classified target domain hyperspectral images by adopting a source domain depth multi-feature active migration network. According to the hyperspectral image high-precision classification method provided in the invention, the high-precision classification for different areas of one hyperspectral image or two hyperspectral images shot at the same place and at different time moments can be realized by utilizing a small number of training samples.