44results about How to "Small amount of collected data" patented technology

The invention discloses a single-pixel imaging system based on polarization correlated imaging. The single-pixel imaging system based on polarization correlated imaging comprises a light source, a modulator, a polarizer, a lens, a polarization analyzer, a filtering sheet, a single-point light intensity detector and a synchronous control and data acquisition module. An emitting end enters the modular through the light source, so that a light field with the light intensity distribution fluctuating randomly is generated, polarization of emergent light is modulated through the polarizer, and the emergent light is emitted to a detection target; the light reflected back through a target object is converged by a receiving end through the lens and the light is converged at the single-point light intensity detector through the polarization analyzer and the filtering sheet; the synchronous control and data acquisition module synchronously controls the emitting end and the receiving end, conducts data acquisition and resolves an association algorithm. According to the single-pixel imaging system based on polarization correlated imaging, the target is detected, identified and imaged through polarization information and intensity correlation of the light, the target detection identification rate and the imaging contrast ratio of traditional correlated imaging are improved, and the system has the advantages of being resistant to complicated background interference and the like.

The invention relates to a method for detecting the position of a rotor of a PMSM (permanent magnet synchronous motor) without a position sensor, and the method comprises the steps: employing a signalprocessing method for the digital processing of a change process of the back electromotive force of a three-phase winding; extracting some relatively reliable feature position of the back electromotive force in the rotating process of the motor, such as a zero point and extreme points; obtaining the position feature points, and carrying out the estimation of the rotor position information betweenthe feature points through an extended Kalman filtering method, and finally obtaining the accurate position of the rotor. The method is convenient in data collection, is small in calculation burden,is good in real-time performances, and is suitable for the implementation of various types of motor controllers.

The invention discloses a flow cytometry instrument based on a micro-fluidic technology and a linear array detector. The instrument includes, in a successively connected manner, a micro-fluidic chip, a linear array detector and a data processing apparatus, and includes a light source which is located right above the micro-fluidic chip. A linear main channel is formed inside the micro-fluidic chip, wherein one end of the main channel is provided with a sample inlet while the other end is provided with a sample outlet. The lower surface of the micro-fluidic chip is adhered to the upper surface of the linear array detector. An included angle theta is formed between the main channel and the linear array detector, 0 degree <= theta <= 90 degrees. The flow cytometry instrument mainly combines the cell movement in multiple micro-fluidic channels in the micro-fluidic chip and scanning imaging of a traditional linear array detector, so that compared with a flow cytometry instrument based on an area array detector and the micro-fluidic technology, the flow cytometry instrument can form a cell image in higher resolution ratio, and is more accurate and has higher speed in cell flowing counting.

The present invention relates to a comprehensive evaluation system for acceptance of advertisement delivery, comprising: inserting the first plug-in into the monitor of the advertisement content access page when the advertisement is placed, and linking to the link of the advertisement content, inserting the second plug-in Go to the monitor of the advertising content access page, and link to the URL of any file resource contained in the advertising content; then publish, after publishing, only need to extract the corresponding first plug-in to monitor the link of the advertising content to form the first monitoring log ; and the second plug-in monitors the advertising content transmission data status corresponding to the advertising content link to form a second monitoring log, so there is no need to extract a large number of logs, which greatly reduces the amount of collected data and improves the accuracy of later data. Processing efficiency.