73results about How to "Get it in real time" patented technology

The invention provides a navigation image matching filtering method based on K-means clustering algorithm, which comprises the following steps: 1. Obtaining an image of the motion process through the camera by the mobile terminal; 2. Extracting feature points for the image acquired by the camera; 3. Obtaining the matching point pairs by matching the extracted feature points of the image; 4. Using the K-means clustering algorithm to eliminate the mismatching point pairs to correct the measurement error of the mobile terminal to calibrate the coordinate position. Using the method, highly accurate matching point pairs can be obtained in a stable and real-time way, the accuracy of image matching and navigation route can be improved, and the accuracy of navigation can be finally improved. Compared with the existing navigation image matching filtering method, the proposed method has the characteristics of simplicity, high efficiency, timeliness and strong stability, which can improve the calculation speed of SLAM system and reduce the burden of SLAM system.

The invention provides a method for measuring soil bulk density in real time. The method comprises the following steps of measuring soil under an undisturbed soil condition on line; acquiring a voltage signal of soil moisture volume percentage through a frequency domain reflection method, and determining the value of the soil moisture volume percentage through a calibration test method; acquiring the original spectral data of soil moisture weight percentage through a visible light-infrared reflection method, preprocessing the original spectral data and then substituting the data into a regression model preset in a system to calculate the soil moisture weight percentage; converting the soil bulk density from the soil moisture volume percentage and the soil moisture weight percentage. The invention also provides a device for measuring the soil bulk density. The device comprises a conical rod, a coaxial cable, an optical fiber, a soil moisture volume percentage probe, a soil moisture weight percentage probe, a soil moisture volume percentage detection module, a soil moisture weight percentage detection module and a panel computer. The method and the device which are provided by the invention can conveniently, fast and accurately obtain the soil bulk density of field soil at special section depth in real time without sampling the soil.

The invention discloses a method for plastic sample element identification based on laser-induced breakdown spectroscopy. The method includes a step (1) of establishing an elemental characteristic line database based on an NIST database; a step (2) performing an experiment on a plastic sample through am LIBS device to obtain a plastic sample 2D data matrix; a step (3) of performing baseline correction on LIBS spectra based on a discrete wavelet transform method; a step (4) of performing spectral peak identification on the corrected spectra according to a continuous wavelet transform method; and a step (5) of comparing data in LIBS with data in the established characteristic line database to determine an element attribution of a spectral peak. According to the method, elements in the plastic sample can be automatically identified, the influence of garbage on the recognition process is reduced, and the goals of improving the element identification accuracy rate, reducing the classification time, and reducing the calculation cost are achieved.

The invention relates to the field of harmonic identification methods, in particular to a harmonic identification method used for harmonic identification in power systems or control systems. The method comprises the following steps: creating response signal non-linear state space model; and extracting state vector estimated value, harmonic amplitude and phase at k moment. The method for harmonic identification based on generalized Kalman filter can obtain accurate information of harmonic component in excitation response signal of simple harmonic wave in a fast and real-time manner, and can be applied to harmonic identification in power systems or control systems conveniently.

The invention discloses a voltage detection device, a system and a method, relating to the field of electronics and capable of dynamically carrying out overvoltage or undervoltage detection on the voltage of a chip power supply in real time so as to improve the system reliability. The voltage detection device comprises a master control unit, an analog-to-digital conversion unit and a voltage comparison unit, wherein the master control unit is connected with a chip and is used for receiving the real-time VID (voltage identity) of the chip and converting the real-time VID in a chip acceptable working voltage range required by the real-time VID and then providing the converted real-time VID to the voltage comparison unit, the analog-to-digital conversion unit is connected with the chip power supply and is used for receiving a real voltage analog signal provided by the chip power supply, converting the real voltage analog signal into a real voltage value and then providing the converted real voltage value to the voltage comparison unit, the voltage comparison unit is connected with the master control unit and the analog-to-digital conversion unit respectively and is used for determining whether the real voltage value is beyond the chip acceptable working voltage range required by the real-time VID. The voltage detection device, the system and the method are used for the overvoltage/undervoltage detection of an automatic voltage adjustment power supply.

The invention relates to an expressway traffic information display method, device and system based on an intelligent lamp post. The method comprises the steps: collecting vehicle information, determining a road section for displaying expressway traffic information, interactively transmitting expressway traffic information, and tracking images of a vehicle and an adjacent vehicle; analyzing the visual field of a driver of the vehicle according to the tracked images of the vehicle and the adjacent vehicle, and displaying highway traffic information according to the visual field of the driver; evaluating the road condition in front of the vehicle; and displaying the highway traffic information according to whether the front road is abnormal or not. According to the invention, real-time traffic information guidance is provided for drivers for different vehicles through the intelligent lamp post; the intelligent lamp post cooperates with the guardrail screen and the ground sign display screen in the expressway section covered by the intelligent lamp post, so that traffic monitoring blind spots are perfected, drivers can obtain traffic information conveniently, the traffic accident rateis effectively reduced, and the traffic efficiency of the expressway is improved.

The invention provides a train information displaying system and method. The train information displaying system comprises a central processing unit, a control operation display screen, a positioning unit, an antenna, an MVB (Multifunction Vehicle Bus) unit, a main switch, a branch switch, a carriage branch processing unit, a train internal displayer and a train external displayer, wherein the positioning unit, the MVB unit, the control operation display screen and the main switch are respectively connected with the central processing unit; the branch switch is connected with the main switch through Ethernet; the train internal displayer and the train external displayer are respectively connected with the branch switch through the carriage branch processing unit; and the antenna is connected with the positioning unit. When data of the positioning unit are lost, a mileage redundancy positioning algorithm is started through the central processing unit, train operating data are provided through the MVB unit and a train operation route database is combined so as to work out real-time mileage information and realize the positioning. The system provided by the invention has the advantages that trains can be accurately positioned; the data are transmitted at a high speed; and the information is intelligently displayed.

The invention provides a molecular dynamics measurement device and method based on quantum coherence control. The molecular dynamics measurement device comprises a femtosecond laser light source, a beam splitter, a pump light path system, a femtosecond pulse shaper, a detection light path system, a computer and a pulse measuring system, wherein the beam splitter is used for dividing the femtosecond laser into pump light and detection light; the pumping light path system enables pumping light to enter the femtosecond pulse shaper and then excite the chemical sample; the detection light path system is used for collecting transient absorption spectrum signals of a first excitation single state and a first excitation triplet state of the chemical sample; and the pulse measuring system is composed of a beam splitting sheet and a spatial encoding type spectral phase coherent direct electric field reconstruction method. The molecular dynamics measurement device is capable of combining the quantum coherence regulation and controlling, the pumping detection technology and the pulse measuring technology, the branch ratio of different light excitation relaxation products can be changed by optimizing the laser pulses, the dynamics information of the whole spectrum detected is analyzed under different shape pulses, and the information obtained by the pumping detection technology is greatlyenriched.

The invention provides a real-time imaging detection system for the X-ray detection of a weld joint of a cylinder. The system comprises a control console provided with a control computer, a high pressure generator, an X-ray tube head connected with the high pressure generator, an X-ray imaging receiver, a motion transmission mechanism, a gantry bracket, a guide rail pair positioned below the gantry bracket, a circulating water cooler for cooling the X-ray tube head, and a tool for mounting a to-be-detected weld joint cylinder, wherein X-ray imaging software is arranged on the control computer; the X-ray tube head and the X-ray imaging receiver are arranged on different motion output members of the motion transmission mechanism opposite to each other; the tool for mounting the to-be-detected weld joint cylinder is a tool which is driven by a motor to rotate around a vertical axis; at least four rollers matched with the guide rail pair are arranged below a tool bracket; and the signal control ends of the X-ray tube head, the X-ray imaging receiver and a motion transmission mechanism driving motor of the X-ray tube head, the X-ray imaging receiver and the signal control end of a tool rotation driving motor are respectively connected with the signal control end of the control computer.

The invention discloses a high fidelity full face texture fusing method of a three-dimensional full face camera, comprising following steps: calibrating multiple external parameters of a three-dimensional texture camera, projecting a triangular patch on the surface of a three-dimensional model to texture images photographed from different view angles; shearing the triangular patches projected on the texture images, calculating the fusing weight of the triangular patch on every texture image; carrying out affine transformation to all triangular patches so as to form a shape the same to the triangular patch corresponding to the maximum fusing weight; carrying out texture triangular fusion; and adhering the fused texture triangles to the corresponding triangular patches of the three-dimensional model.

The invention discloses a chilled meat quality evaluation method based on an image processing technology. The evaluation method comprises the following steps: obtaining a standard color plate and a digital image of meat by an image acquisition device, then performing characteristic analysis on the standard color plate and the digital image of meat, and fitting the digital image characteristics of the standard color plate with the grade of the meat to establish a mathematic relationship between the grade of the meat and the image characteristic, wherein by virtue of the mathematic relationship, the grade change of the chilled meat during preservation can be nondestructively and rapidly evaluated in real time. By virtue of the method, the value of sensory evaluation on the chilled meat is correct and objective, and the method has significance for the control and evaluation on the quality of the chilled meat during preservation.

The invention relates to a method for measuring the mass of a solution in a thin polymer film and the viscoelasticity of the thin polymer film. The method comprises the steps that (1) in a quartz crystal microbalance, frequency and dissipation change values of a standard chip caused by a solution and frequency and dissipation change values of a standard chip covered by the thin polymer film caused by the solution are recorded in real time, and are subtracted to obtain the frequency and dissipation change values of the solution in the thin polymer film; (2) a product of a frequency multiplying number and the dissipation change value of the solution in the thin polymer film is taken as an X-coordinate, and the ratio of the frequency change value of the solution in the thin polymer film to the frequency multiplying number is taken as a Y-coordinate to make a linear regression equation, so that the intercept of the linear regression equation on a Y-axis is the mass of the solution in the thin polymer film, and the slope of the linear regression equation is the retardation time of the thin polymer film. The method can be used for measuring the mass of the solution in the thin film and the viscoelasticity of the thin film in real time simply and accurately in a liquid environment. The method is particularly suitable for measuring a high-viscoelasticity polyelectrolyte brush brought by highly hydrated swelling.

The invention relates to a method for analyzing in-port and sailing time of a fishing boat based on Beidou ship position data, comprising the following steps: extracting an anchored ship position according to the speed of the fishing boat, and screening out the anchored ship position data in each location; converting the ship position data into vector files and projecting; defining the dense pointin the location as the mooring port of the ship and marking the port, assigning the administrative division to the port location; judging whether the ship is in port or sailing in the sea by the relationship between the port location and the fishing boat; and extracting the sailing time and return time, and calculating a timetable for in-port and sailing time.

The embodiment of the invention discloses a real-time terminal transaction information monitoring method, a system and a device. The method comprises steps: a monitoring device acquires and stores payable transaction information based on terminal payment of a to-be-monitored electronic commerce system; the monitoring device receives actually-paid transaction information sent when a bank system successfully handles a terminal transaction request of the to-be-monitored electronic commerce system via a communication link with the bank system; and according to a monitoring strategy, the monitoring device carries out monitoring based on the actually-paid transaction information and the payable transaction information. When the embodiment of the invention is applied, the terminal transaction information can be monitored in real time.

The invention discloses a projection device suitable for unmanned aerial vehicle sondes. The sondes are placed in a plurality of sonde loading mechanisms, when an unmanned aerial vehicle reaches a preset location, thrust applied to movable bases by projection hubs is removed by a pushing mechanism, the movable bases are opened under the action of own gravity and/or the gravity of the sondes, the sondes are projected into the atmosphere under the own gravity, and environmental data is collected by a plurality of detecting devices carried. According to the projection device suitable for the unmanned aerial vehicle sondes, numerous unnecessary structures are reduced under the action of the gravity, so that the high-efficiency projection device suitable for mass population and with a simple structure, light weight, saved materials and low cost is achieved; since projection is performed under the action of the gravity, fluctuations of the projection direction caused by the device or an external environment when the sondes are projected is avoided, and the accuracy of measurement is greatly improved; and thus, data received by sensors in the sondes can be obtained accurately in real time, and changes in the atmosphere can be accurately predicted.

The invention provides a system and a method for mapping and calibrating training javelins. The system comprises mapping instruments and a mapping and calibrating mechanism. Each mapping instrument comprises a CPU (central processing unit), a battery, a six-axis movement sensor, a calibrating button and the like, each battery is connected with the corresponding CPU and is powered by the CPU, each CPU is connected with the corresponding six-axis movement sensor, and calibrating keys which are matched with the mapping instruments are arranged on javelin bodies; the mapping and calibrating mechanism comprises a tilt angle sensor and a calibrating device support, the javelin bodies are arranged on the calibrating device support, level adjusting bolts are arranged at the bottom of the calibrating device support, a parallel plate is arranged on the top of the calibrating device support, and the tilt angle sensor is mounted on the parallel plate. The system and the method have the advantages that movement tracks and parameters capable of affecting throwing distances can be accurately and reliably acquired in real time, accordingly, training effects can be improved, and the system and the method have excellent actual use and popularization value.