647results about How to "Accurate speed" patented technology

Methods are provided for producing a molecular array comprising a plurality of molecules immobilized to a solid substrate at a density which allows individual immobilized molecules to be individually resolved, wherein each individual molecule in the array is spatially addressable and the identity of each molecule is known or determined prior to immobilisation. The use of spatially addressable low density molecular arrays in single molecule detection techniques is also provided.

Improved memory devices, circuitry, and data methods are described that facilitate the detection and correction of data in memory systems or devices in combination with a stored record of known flaws, errors, or questionable data bits of a read memory row or block to allow for more efficient processing and correction of these errors. An embodiment of the present invention utilizes an erasure pointer that can store the location of N bad or questionable bits in the memory segment that is currently being read, where for each bit stored by the erasure pointer the embodiment also contains 2N ECC generators to allow the read data to be quickly checked with the know bad bits in each possible state. This allows the read data to then be easily corrected on the fly before it is transferred by selecting the bad bit state indicated by the ECC generator detecting an uncorrupted read.

A calculating unit of a swing analyzer calculates, assuming that a golf club is in a uniform circular motion about a virtual center of rotation 0 during a swing, a virtual speed Vh at a central point R of a golf club head, based on a distance between first and second acceleration sensors, a distance between the first acceleration sensor and the central point R of a golf club head and outputs from the first and second acceleration sensors, and calculates the speed of central point R of a golf club head utilizing the virtual speed Vh.

An object position area (82a) is calculated according to a position in the space of a detected truck (70). A template (80a) corresponding to the object position area (82a) recorded at the previous time is then called. The template (80a) is moved to a position on a reference image Ib where the similarity is highest. Overlap rate (R(t-1)⊥Rt) of the object position area (82a) and the template (80a) is calculated. A decision is made whether the object is identical to that detected in the past by using the overlap rate.

Methods for road safety enhancement use mobile communication device (MCD) onboard vehicle to share traveling data through inter-vehicle communication broadcasting, perform road hazard warning, enhance road navigation, and provide autonomous road assistance. The methods have a variety of vehicle status data, such as moving data, steering data, or indicator data, obtained through GPS or image capturing and recognition of instrument cluster of vehicle. The image capturing and recognition allows to get speed data from indication of speedometer, indication of left or right turn signal, steering action data corresponding to steering wheel rotation, and light-on indication of system status indicators. To facilitate that, the MCD may be placed in front of steering wheel, and, if applicable, also in coupling with movement of steering wheel. The MCD may perform relative positioning map-matching lane correlation and GPS-update-interval speed positioning to improve data quality regarding vehicle moving status.

The invention relates to a method for rapidly detecting the content of index components of Chinese medicinal materials by using near-infrared spectroscopy technology, which can realize the rapid detection of the comprehensive quality of Chinese medicinal materials. Collect the sample, collect the near-infrared diffuse reflectance spectrum of the sample, and preprocess the obtained spectrum, then use the detection method corresponding to the sample in the conventional method to measure the content of its index components, and combine the spectrum with the content of the index components, The quantitative analysis model is established by adopting the chemometrics method suitable for the analysis of the components of traditional Chinese medicine, the sample to be tested is crushed, and its near-infrared spectrum is scanned, and the spectrum is input into the quantitative analysis model to measure the content of the index components in the Chinese medicinal material. The whole process takes a short time, is fast and accurate, can be measured online, improves production efficiency, greatly saves manpower and material resources, and can generate huge economic and social benefits.

The invention relates to a rollover prevention dynamic detection method for a wagon on a curved conduit and a warning device. The method comprises the following steps: 1, installing a rollover prevention dynamic detection method for a wagon on a curved conduit which comprises a steering wheel rotation angle measuring device, a yaw angle velocity measuring device, an inclination angle measuring device and an electronic control unit which comprises a single chip microcomputer, wherein a solidification program of the single chip microcomputer is equipped with a centroid height dynamic detection algorithm module and a rollover prevention warning algorithm module, and a rollover alarming range is arranged in the rollover prevention warning algorithm module. 2, collecting steering wheel rotation angle singles, vertical yaw angle velocity measuring singles of the wagon, side-tipping angle singles of a carriage of the wagon, the side-tipping angle singles of a rear shaft of the wagon and vertical speed singles of the wagon. 3, a lateral acceleration and a centroid height of the wagon is counted through the centroid height dynamic detection algorithm module. 4, counting a rollover acceleration threshold value through the rollover prevention warning algorithm module according to the centroid height. 5, sending a corresponding alarm command according to a difference value of the lateral acceleration and the rollover acceleration threshold value of the wagon and the reset rollover alarm range.

A distance between at least one antenna of an interrogation system and a transponder, such as an RFID tag, is determined based on derivatives with respect to frequency of the phase and the signal strength of responses transmitted by the transponder and received at the at least one antenna. The derivatives of the phase and the signal strength facilitate compensating for sources of multipath interference. Determining changes in distance may further facilitate determining location, speed, or bearing of the transponder by the interrogation system.

System and method for the processing of MICR documents that produce read errors. MICR documents are read and sorted to a destination pocket for processing subject to a determination that existing digit errors do not prevent the routing of the document. In example embodiments, an error does not prevent the routing of the document if it is not related to the routing / transit field. An optical character recognition (OCR) process is performed on the stored, electronic image of the document to correct digit errors in the stored data read from the documents. If a determination is mode that the correction cannot be determined through the OCR process, the image and corresponding MICR data is displayed on a user terminal, for manual correction by reference to an image of the document, rather than the document itself.

The invention discloses an efficient road traffic anti-collision warning method based on vehicle-to-vehicle communication. According to the method, whether collision warning needs to be carried out is judged according to running state information of a vehicle and an adjacent vehicle, coordinates of a later joint of running routes of the vehicle and the adjacent vehicle are calculated, when the joint is located in front of the vehicle running route, time different of reaching the joint of the two vehicles is calculated, and finally a safety coefficient is set according to the actual road traffic condition and the time difference, namely the emergency situation level of warning is set. The method provides a novel warning mechanism based on the time-domain characteristic of the later joint, achieves dynamic safety warning decision based on partial geographical location information of the vehicle and vehicle running state information, guarantees efficient and reliable safety warning, is low in communication calculation cost, reduces vehicle power consumption, can improve vehicle traffic capacity on a road, and is an available and simple method for an application for assisting vehicle running safety in a car networking mode.

The invention discloses an under-actuated surface vehicle trajectory tracking control system based on a self-adaptive fuzzy observer. A sensor module collects position and course information y of a surface vehicle and outputs the position and course information y to the self-adaptive fuzzy observer; the self-adaptive fuzzy observer receives output of a controller, obtains position and heading estimation, speed estimation, slow varying disturbance force estimation and unknown nonlinear term estimation (please see the expressions in the specification) and respectively transmits the position and heading estimation, the speed estimation, the slow varying disturbance force estimation and the unknown nonlinear term estimation to a trajectory tracking error generator and the controller; a guide system obtains expected speed and accelerated speed information in a hull coordinate system through calculation and respectively transmits the expected speed and accelerated speed information to the trajectory tracking error generator and the controller; the trajectory tracking error generator obtains error information of all states of trajectory tracking and transmits the error information to the controller; the controller calculates a longitudinal thrust and course changing torque control instruction of the current moment and transmits the control instruction to a thrust system, and the thrust system executes the control instruction. The under-actuated surface vehicle trajectory tracking control system can perform fast tracking under the conditions that only the position and the heading angle are measurable and a model has indeterminacy.

When a host vehicle travels while being decelerated by an intervention of automatic braking, a support ECU calculates a collision prediction speed at a collision prediction position and determines whether or not the collision prediction speed exceeds a collision prediction speed threshold. The support ECU allows an automatic steering for collision avoidance to intervene only in a case where the collision prediction speed is determined to be equal to or less than the collision prediction speed threshold and prohibits the intervention of the automatic steering in a case where the collision prediction speed is determined to exceed the collision prediction speed threshold.

The invention discloses an in-orbit moving target detecting method with space-based radar and infrared data fusion. The method includes the steps that when an infrared detecting system is used for detection, background suppression is carried out on each frame in an infrared image sequence by adopting a filtering method based on the morphology, self-adaptive threshold segmentation is carried out on images obtained after background suppression, a single frame detection result is extracted, a multi-frame target is determined through a tracking algorithm, and whether the detection result is a real target or not is judged to obtain the detection result of the multi-frame target; during radar detection, pulse doppler (PD) is adopted for processing. After time calibration and space calibration are carried out on the obtained infrared and radar target information, data fusion is carried out on the information by adopting a measurement fusion method, and track prediction is carried out on fused data to obtain the estimated position of the target.

The invention discloses an unmanned aerial vehicle autonomous navigation positioning method with assistance of visual information. The positioning method aims at providing accurate unmanned aerial vehicle navigation positioning information by making use of a visual sensor and corresponding visual ranging algorithm. In the method, speed and position information of the unmanned aerial vehicle are calculated through a combined visual ranging algorithm, and are used for assisting inertial navigation positioning. When a GNSS (Global Navigation Satellite System) signal is available, inertial navigation system error is corrected through inertial navigation / GNSS combined navigation, and a visual ranging evaluation criterion is established; when the GNSS signal is unavailable, the visual ranging evaluation criterion is used for evaluating the visual ranging result obtained by the combined visual ranging algorithm, error of a inertial navigation system is estimated and compensated with the visual ranging result and the visual ranging evaluation result, and thus, continuous and reliable navigation positioning information is provided for the unmanned aerial vehicle. The method provided by the invention can continuously and steadily provide accurate navigation positioning information for an unmanned aerial vehicle control system for long time.

In a method of recognizing and / or tracking objects which correspond to real objects in at least one sensing zone of at least one sensor for electromagnetic radiation on the basis of images of the sensing zone repeatedly sensed by means of the sensor, succeeding images are evaluated in succeeding cycles and a search is made for at least one respective object found in a cycle on the basis of a corresponding image in a correspondingly later image in a later cycle to track the object. At least one part of an earlier image and / or at least one indication with respect to an earlier state of the object or of a real object corresponding to it, which is determined using a corresponding earlier image in the current cycle, is associated with at least one part of a current image determined in the current cycle or with an object recognized in the current cycle during at least one current cycle on the basis of the results of an at least preliminary evaluation of a current image.

A system and methodology for continuous condition monitoring of rotating equipment employ adaptive signal processing techniques to determine the RPM of a rotating machine from the time-based vibration data. RPM is determined based upon the input of a digitized time-based sample sequence of vibration data acquired directly from a vibration transducer for on-line real-time measurement of the machine RPM. Once RPM is determined, online vibration analysis for a given RPM or set of RPMs may be performed. The present invention extracts characteristic vibration features from vibration data and uses these extracted values to provide condition detection and diagnoses of machine faults.

The invention relates to a method for comprehensively establishing an initial depth interval velocity model by combining a seismogeology understanding. According to the method, seismic data inversion, drilling and logging information, earth surface geological outcrop data, area geological information, stratum velocity changing rules and other information are comprehensively applied to establish the initial depth interval velocity model, in other words, based on seismic data inversion, the drilling and logging information, the earth surface geological outcrop data, the area geological information and the stratum velocity changing rules serve as constraints, a relatively accurate initial structure model and the interval velocity along the stratum are obtained, and thus an enforceable initial depth interval velocity modeling process is formed. According to the method, the advantages of three existing initial depth interval velocity model establishing methods are fully absorbed; meanwhile, the concept of multiple information constraints is adopted for establishing the initial depth interval velocity model, and the initial depth interval velocity model is made to be more accurate.

A system and methodology for the continuous condition monitoring of rotating equipment. The present invention comprises a method that employs adaptive signal processing techniques to determine the RPM of a rotating machine from the time-based vibration data. According to a preferred embodiment of the present invention, RPM is determined based upon the input of a digitized time-based sample sequence of vibration data acquired directly from a vibration transducer mounted on the machine for on-line real-time measurement of the machine RPM. Alternatively, the input to the “virtual RPM sensor” could come from a database or file where the sample sequences of the vibration signal are stored for off-line measurement of the machine RPM. Once RPM is determined, online vibration analysis for a given RPM or set of RPMs may be performed. The present invention extracts characteristic vibration features from vibration data and uses these extracted values to provide condition detection and diagnoses of machine faults.

The invention discloses a base-movable aeroengine dual-rotor system model experiment platform, which comprises a base rotary table seat, a transmission shaft A, a transmission shaft B, a base rotary table and an inner rotor and outer rotor subsystem, and the transmission shaft A and the transmission shaft B can synchronously rotate; the inner rotor and outer rotor subsystem mainly comprises an inner rotor, an outer rotor, an inner rotor low-pressure compressor rotary table, an inner rotor low-pressure turbine rotary table, an outer rotor high-pressure compressor rotary table, an outer rotor high-pressure turbine rotary table, three bearing blocks (A, B, C) and a rotor system base fixedly connected with the base rotary table; the inner rotor is inserted in an outer rotor and supported on the bearing blocks (A, B), the bearing block A is a damping-adjustable support, and the bearing block B is a flexible support; one end of the outer rotor is supported on the inner rotor by ball bearings, and the other end of the outer rotor is supported on the bearing block C, which is a flexible support; and infrared optical sensors and eddy current sensors are arranged on both the inner rotor and the outer rotor to test the vibration signal of the system. The base-movable aeroengine dual-rotor system model experiment platform can effectively simulate the dynamic experiment of a dual-rotor system of an aeroengine under actual working conditions.

The invention provides a driver assistance system and method based on a millimetre-wave radar, a terminal and a storage medium. The driver assistance system based on the millimetre-wave radar comprises at least one millimetre-wave (mmW) transceiver (Tx / Rx), an original data processing unit, a dynamic and static separation unit, a fusion unit, an analysis unit and a decision-making unit. The driverassistance system based on the millimetre-wave radar in the invention does not depend on a visual sensor; point cloud data singly obtained by the millimetre-wave radar is subjected to pre-processing,fusion, dynamic and static separation, individual semantic acquisition, tracking and analysis; therefore, the effect having the same target obtained by image processing through the visual sensor canbe achieved; furthermore, fusion between visual perception data and radar perception data can be utilized in the invention; then, processing or analysis is carried out; for target object tracking, therelative distance, speed and angle data are relatively precise in the invention; and thus, the driver assistance system disclosed by the invention is more suitable for being used in complex scenes having relatively high people flow, such as a parking lot, a garden and a basement.

The invention discloses a high-precision integrated navigation positioning method for an underwater glider. The method comprises the steps that output of an inertial measurement unit (IMU) is subjected to rough processing and fine processing; higher-precision data is obtained; data obtained by dead reckoning based on a Runge-Kutta method (RK4) is combined; adaptive Kalman filtering (AKF) and unscented Kalman filtering (UKF) are conducted; the filtered data is fed back to the IMU; an accumulative error of the IMU is corrected; and relatively accurate information such as position, speed and gesture is finally output. The autonomous navigation method for the underwater glider has the advantages of high precision, real-time performance, stability, and the like, so that a whole navigation system can stably operate at long endurance, high precision and low power consumption, the current position and gesture information of an underwater aircraft can be obtained rapidly and accurately, and navigation path and position parameters can be provided for the underwater aircraft.

A vibration suppressing device and a vibration suppressing method that are capable of obtaining an accurate optimum rotation speed and shortening a time period from generation of chatter vibration to calculation of the optimum rotation speed are provided. The vibration suppressing device 10 includes: vibration sensors 2a to 2c for detecting time-domain vibrational accelerations of a rotary shaft 3 in rotation; and a control device 5 for calculating a chatter frequency and a frequency-domain vibrational acceleration of the rotary shaft 3 at the chatter frequency on the basis of the time-domain vibrational accelerations detected by the vibration sensors 2a to 2c, and when the calculated frequency-domain vibrational acceleration exceeds a predetermined threshold value, calculating an optimum rotation speed on the basis of a predetermined parameter, and rotating the rotary shaft 3 at the calculated optimum rotation speed.

A calibration system for a flow meter includes a flow simulator, the flow simulator including a receiver configured to receive flow meter transducer signals from a flow meter. A simulation subsystem is configured to create simulated transit time signal pulses, and to transmit the simulated transit time signal pulses to the flow meter at preselected time intervals. A calibration subsystem is configured to receive from the flow meter a transit time differential value generated by the flow meter based on the simulated transit time signal pulses and output a calibration factor to the flow meter.

A dynamic motion and distance measuring device for estimating and measuring speed and distance covered by a subject engaged in an athletic endeavor and more particularly to measuring and estimating the speed and distance and providing a relative indication of a measured speed and distance to an optimal speed and distance and / or time including finish time of the subject engaged in an athletic event, even where the event is occurring in changing environment or terrain conditions where remote data collection and signal reception is inconsistent and variable.

A coding circuit codes present image data of a pixel which is received as raster data and a delay circuit stores a coded image data for one frame period and outputs one-frame preceding image data of the pixel in accordance with an input of the coded image data. First and second decoder circuits decode coded image data and one-frame preceding coded image data, respectively, a variation-amount calculation circuit calculates variation-amount data of both decoded image date, and an one-frame preceding image reproduction circuit reproduces one-frame preceding reproduced image data. An image date correction circuit generates corrected present image data on the basis of the present image data and the one-frame preceding reproduced image data.