49results about How to "Unaffected by noise" patented technology

The present invention discloses a terahertz spectroscopy feature extraction method based on convex combination kernel function principal component analysis, and relates to the field of spectrum analysis and substance type detection technologies. The method comprises: acquiring a time domain observed signal, filtering noise information by a frequency terahertz spectrum curve obtained from a discrete fourier transformation, performing cubic spline interpolation on the spectrum curve, performing resampling by intercepting comparable data in a same frequency range and completing data normalization; and performing a convex combination kernel function mapping on a sample after completing preprocessing, performing dimension reduction on a mapped basis function matrix to finally realize terahertz spectroscopy feature extraction, and analyzing intra-cluster, inter-cluster relationships of dimension reduced data. According to the terahertz spectroscopy feature extraction method based on convex combination kernel function principal component analysis, the number and high resolution of a spectrum sample are not required, and the effect of a interference signal on the feature extraction can be fully reduced, so that the feature extraction and a low dimension representation of the terahertz frequency domain spectroscopy are realized in the case of unknown substance types and numbers, and the method has a distinct cluster effect.

The invention discloses a device and method for activating a voice control module through gesture recognition. The device comprises a shell, a displayer fixed to the shell and an activation structure. The activation structure comprises a gesture recognition sensor, a data processing module and a storage module, wherein the gesture recognition sensor is arranged outside the shell, and the data processing module and the storage module are arranged inside the shell. The gesture recognition sensor is used for capturing real-time gesture information of a driver and transmitting the real-time gesture information to the data processing module, the storage module stores control gesture information defined by the driver, and the data processing module compares the real-time gesture information with the control gesture information and then controls on-off of a voice control module according to the comparison result. According to the device and method, on-off of the voice control module is completed through gesture recognition, the driver does not need to touch a button by hand, the body movement range of the driver is reduced, and therefore driving safety is improved. The gesture recognition method is merely influenced by the environment, is not influenced by noise at all and is good in reliability.

The invention refers to a live-detection method of insulator fault in HV transmission line, belonging to power transmission field, the sensitivity high and the use convenient. The technique project; when synthetical insulator has electric fault or ceramic insulator has zero-value insulator, the axial and radical distribution along insulator of the surrounding electric field will produce distortion, detect the distribution and respectively compare with non-fault standard electric field, if no obvious difference, judge normal, otherwise, judge the insulator has fault.

The invention provides a synthetic image construction method based on a Landsat long time sequence. The method comprises the following steps: firstly, collecting all available images of which the cloud amount is lower than 80 percent in the Landsat series; then removing noise observation points in the Landsat images such as clouds, cloud shadows and snow, then fitting each clear observation valueaccording to a certain rule, establishing a surface reflectance change curve of each pixel of each waveband, and finally generating a synthetic image of daily Landsat surface reflectance. According to the method, the time resolution of image construction is effectively improved, accidental conditions occurring on the earth surface can be effectively eliminated, the method is not influenced by noise which cannot be recognized by a cloud detection algorithm, the periodic change condition of the earth surface reflectivity caused by seasonal change of the earth surface and change of the solar altitude angle is reflected, and the inter-year change trend of the reflectivity is obtained.

The invention relates to a single image defogging method based on structural information and belongs to the field of digital image processing. A foggy image is given, an image foggy day degradation physical model is set up, atmosphere light is estimated, initial environment light is calculated, the structural information of the foggy image is extracted, the environment light is corrected, and a true image is restored. According to the single image defogging method based on the structural information, close-shot photographed images, medium-long-shot photographed images and long-shot photographed images can be better restored, and particularly the single image defogging method can be expanded to conduct defogging on videos.

An object of the present invention is to provide an electrophotographic photoreceptor capable of recording management information for managing the electrophotographic photoreceptor in a noncontact manner, and improving management of the electrophotographic photoreceptor. An electrophotographic photoreceptor includes a conductive base, a photosensitive layer and a flange portion, wherein a noncontact information medium provided with an antenna part which communicates in a noncontact manner with a reader / writer of a main body of an electrophotographic image forming apparatus and a control part which stores management information for managing the electrophotographic photoreceptor and controls the antenna part so as to communicate with the reader / writer is disposed onto the conductive base.

The present invention discloses a noise reduction type automobile shock absorber comprising a fixing base, bolt holes and a fixing groove, the fixing groove is formed in the fixing base, the bolt holes are formed in the outer side of the fixing base, a fixing ring is arranged on one side of the fixing base, and a rubber pad is arranged in the fixing ring. Beneficial effects are as follows: througharranging a damping ring, a rubber ball, the rubber pad, a first spring pad and a second spring pad, noise generated during shock absorption of the shock absorber is reduced; a driver is prevented from being influenced by noise; an annular magnet and a magnetic inner rod are arranged, so that the shock absorber can additionally absorb shock through the action of magnetic field force, the shock absorption effect of the shock absorber is improved, the pressure borne by the shock absorber can be monitored in real time through a pressure sensor, and then the working condition of the shock absorber is monitored.

The invention relates to a wood powder edge detection algorithm based on target extraction and an improved morphological operator. The wood powder edge detection algorithm based on target extraction and the improved morphological operator comprises the following steps of: photographing a wood powder microscopic magnification image; analyzing and processing the image; transforming a red, green, blue (RGB) image into a hue, saturation, value (HSV) color space; performing binary target extraction based on the saturation (S) component; and improving a traditional morphological detection operator by an optimal direction element so as to obtain a good wood powder edge. The method is not influenced by background noise, is good in edge detection effect and accurate in positioning, avoids weight section of multidirectional edge detection synthesis, can perform subsequent processing such as refining on the edge image according to different requirements, can guide the next step of identification process, and has important significance of realizing intelligent detection of the mesh number of the wood powder.

The invention relates to a static effect correction method and system for magnetotelluric sounding. The correction method comprises the following steps: acquiring a magnetotelluric signal to be processed, wherein the magnetotelluric signal comprises five mutually orthogonal to-be-processed signals, and performing empirical mode decomposition on each to-be-processed signal to obtain a multi-order intrinsic mode function component corresponding to each to-be-processed signal; according to the multi-order intrinsic mode function component corresponding to each to-be-processed signal, determininga multi-order principal component of each to-be-processed signal by adopting a principal component analysis method; determining an effective signal component of each to-be-processed signal by adoptinga canonical correlation analysis method according to the multi-order principal components of all the to-be-processed signals; and reconstructing according to the effective signal component of each path of to-be-processed signal to obtain each path of corrected to-be-processed signal. According to the method, the static effect can be corrected, and the quality of the reconstructed signal is improved.

The present invention provides an electromagnetic interference suppressing material for obtaining wide band electromagnetic suppressing effect in high frequency regions by permitting a composite magnetic material comprising a soft magnetic powder and a binder to express two magnetic resonances. In the composite magnetic material, the specific surface area of the soft magnetic material is maintained at a prescribed level to exhibit mutually different intensities of two anisotropic magnetic fields.

The invention provides a biological theft-proof sensor for a transmission line. The sensor comprises an inductive lead wire, a controllable oscillation signal generation circuit and a singlechip detection, signal processing and sensitivity arrangement circuit which are connected in turn, wherein the controllable oscillation signal generation circuit and the singlechip detection, signal processing and sensitivity arrangement circuit are connected with a power supply source respectively. The theft-proof sensor is used for a theft-proof monitoring system of an overhead transmission line, can be induced in time when a stayed tower of the transmission line is stolen, and improves the accuracy and reliability of the theft-proof monitoring system.

The invention discloses an intelligent environment control system for improving an equipment operation environment. The intelligent environment control system relates to the technical field of environment control systems, and is mainly composed of an acquisition module, a regulation and control system and a monitoring terminal. The intelligent environment control system not only has good heat dissipation and dehumidification effects on a cabinet body, but also provides a good monitoring environment for a monitoring room.

The invention discloses a control driving method for a medical accelerator frame, which comprises the steps that S1, V / F output is carried out, wherein frame angle information is sampled in real time, the sampled frame angle information is sent to a V / F output unit and a judgment unit after being parsed, and the V / F output unit converts the frame angle information into a frequency value and then outputs the frequency value to a main control computer in real time; S2, the main control computer judges whether a frame zero position calibration unit completes a frame zero position calibration operation or not, a step S4 is executed when the frame zero position calibration operation is completed, and a step S3 is executed if the frame zero position calibration operation is not completed; S3, the step S4 is executed after the frame zero position calibration operation is performed; and S4, the main control computer sends a rotation command to a host command response unit, the host command response unit responds to the rotation command and sends the rotation command to a frequency conversion unit, and the frequency conversion unit carries out three-stage speed variation control on the frame according to the rotation command. According to the invention, control driving for the medical accelerator frame is realized by adopting a control driving system of the medical accelerator frame, and the control driving method has the advantages of good reliability, high control precision in frame rotation and the like.

The invention discloses a method for controlling a low-gain voltage-controlled oscillator, which comprises: setting a control bit of the oscillator as a presetting bit and a control voltage of the oscillator as a presetting value; comparing whether the control voltage of the oscillator exceeds a range of a first group of voltage boundary; if so regulating the preset control bit of the oscillator by a rank, then re-comparing whether the control voltage of the oscillator exceeds the range of the first group of voltage boundary; otherwise changing the first group of voltage boundary to a second group of voltage boundary; comparing whether the control voltage of the oscillator exceeds a range of the second group of voltage boundary; if so regulating the control bit where the oscillator is by a rank, then re-comparing whether the control voltage of the oscillator exceeds the range of the second group of voltage boundary; otherwise regulating the second group of voltage boundary to the first group of voltage boundary, and outputting the control voltage of the oscillator; and the first group of voltage boundary being larger than the second group of voltage boundary.

The invention discloses an observation patch with multiple eye shield structures for a laser welding detection tool, and relates to the technical field of laser welding. The observation patch is specifically provided with a mirror bracket and a connecting shaft; a transparent lens is installed at the inner side of the mirror bracket, a silica gel attaching pad is fixedly arranged at the rear sideof the mirror bracket, the left and right sides of the silica gel attaching pad are each provided with a connector, a side head strap is connected to the rear sides of the connectors, a head strap clamp is arranged at the rear side of the head strap, a top head strap is connected to the upper portion of the head strap clamp, an elastic connecting piece is installed at the outer side of the side head strap, and a fixing clamp is arranged at the rear side of the elastic connecting piece. According to observation patch with multiple eye shield structures for the laser welding detection tool, dueto the crossed structure formed by the side head strap and the top head strap, the patch can be matched with the shape of the human head, the wearing stability of the device is improved, the patch isprevented from falling down, the two hands of the user can be liberated, and use is more convenient.

The invention discloses a control driving system for a medical accelerator frame. The control driving system comprises a main control computer, an RS485 serial communication module, a frequency converter, a motor, a photoelectric encoder, a photoelectric encoder analyzing module, a motor braking module, and an accurate frame rotation control module, wherein the controlling target is the frame; the RS485 serial communication module comprises a first RS485 standard serial port and a second RS485 standard serial port; the main control computer communicates with the accurate frame rotation control module through the first RS485 standard serial port, and is used for sending rotation frame control instructions, and receiving and displaying angle information of the frame; the accurate frame rotation control module comprises a judging unit, a frame zero marking unit, a frequency conversion unit, a braking unit, a main unit injunction response unit and a V / F output unit. The control driving system has the advantages that the reliability is high; the frame rotation control accuracy is high.

The invention refers to a live-detection method of insulator fault in HV transmission line, belonging to power transmission field, the sensitivity high and the use convenient. The technique project; when synthetical insulator has electric fault or ceramic insulator has zero-value insulator, the axial and radical distribution along insulator of the surrounding electric field will produce distortion, detect the distribution and respectively compare with non-fault standard electric field, if no obvious difference, judge normal, otherwise, judge the insulator has fault.

The present invention discloses a terahertz spectroscopy feature extraction method based on convex combination kernel function principal component analysis, and relates to the field of spectrum analysis and substance type detection technologies. The method comprises: acquiring a time domain observed signal, filtering noise information by a frequency terahertz spectrum curve obtained from a discrete fourier transformation, performing cubic spline interpolation on the spectrum curve, performing resampling by intercepting comparable data in a same frequency range and completing data normalization; and performing a convex combination kernel function mapping on a sample after completing preprocessing, performing dimension reduction on a mapped basis function matrix to finally realize terahertz spectroscopy feature extraction, and analyzing intra-cluster, inter-cluster relationships of dimension reduced data. According to the terahertz spectroscopy feature extraction method based on convex combination kernel function principal component analysis, the number and high resolution of a spectrum sample are not required, and the effect of a interference signal on the feature extraction can be fully reduced, so that the feature extraction and a low dimension representation of the terahertz frequency domain spectroscopy are realized in the case of unknown substance types and numbers, and the method has a distinct cluster effect.

The invention discloses an intelligent environment control system for improving an equipment operation environment. The intelligent environment control system relates to the technical field of environment control systems, and is mainly composed of an acquisition module, a regulation and control system and a monitoring terminal. The intelligent environment control system not only has good heat dissipation and dehumidification effects on a cabinet body, but also provides a good monitoring environment for a monitoring room.

The invention discloses a method and device for image segmentation based on sparse principal component analysis. For each point in the image to be processed, the neighborhood of the point is obtained, and similar image blocks are obtained according to the gray value of the neighborhood to form a sample. In the training set, the sparse principal component analysis is performed on the sample block corresponding to the point in the sample training set, and the sparse principal component expression base and sparse principal component expression coefficient are obtained. According to the sparse principal component expression base and sparse principal component expression coefficient, the The pixel value of the image block centered on the point does not contain noise, and the noise-free image is constructed according to the noise-free pixel value corresponding to each point in the image to be processed, and the two-dimensional histogram is performed on the noise-free image respectively. Global threshold segmentation and local threshold segmentation based on the moving average method. The images obtained by the two segmentation methods are obtained according to the regional connectivity, and the segmented image is obtained to ensure that the segmented image is not affected by noise.

The invention provides a biological theft-proof sensor for a transmission line. The sensor comprises an inductive lead wire, a controllable oscillation signal generation circuit and a singlechip detection, signal processing and sensitivity arrangement circuit which are connected in turn, wherein the controllable oscillation signal generation circuit and the singlechip detection, signal processingand sensitivity arrangement circuit are connected with a power supply source respectively. The theft-proof sensor is used for a theft-proof monitoring system of an overhead transmission line, can be induced in time when a stayed tower of the transmission line is stolen, and improves the accuracy and reliability of the theft-proof monitoring system.

In order to provide an ink level detecting unit of an ink jet recording apparatus, which detects surely residual vibration by resonance with a medium such as ink coming into contact with a vibration element without receiving influences such as noise, thereby to heighten ink detection accuracy and reliability, there are provided a piezoelectric element 12 provided in an ink tank 11, an excitation pulse generating part 13 for applying an excitation pulse to the piezoelectric element 12, a sensor 14 which detects a frequency of a counter electromotive force waveform from the piezoelectric element 12 based on residual vibration by resonance with a medium in the ink tank 11, and a judgment part 15 which judges the existence of ink on the basis of the detected frequency. The sensor 14 has two band pass filters 22A and 22B which cause only waveforms in the predetermined frequency bands that have been previously assumed according to ink presence and ink absence to pass; and a frequency measuring part 150 which binarizes the counter electromotive force waveform, counts the number of pulses of the binarized counter electromotive force waveform, counts time from the predetermined number-th pulse to the predetermined number of pulse, and detects a frequency of the counter electromotive force waveform on the basis of this time. An ink remaining amount measuring device for an ink-jet recorder having high ink measuring accuracy and high reliability by accurately measuring the residual vibration due to resonance between a vibration element and a medium such as ink in contact with the vibration element without being influenced by noise. The ink remaining amount measuring device comprises a piezoelectric element (12) provided in an ink tank (11), an excitation pulse generating section (13) for applying an excitation pulse to the piezoelectric element (12).

The invention relates to a static effect correction method and system for magnetotelluric sounding. The correction method comprises the following steps: acquiring a magnetotelluric signal to be processed, wherein the magnetotelluric signal comprises five mutually orthogonal to-be-processed signals, and performing empirical mode decomposition on each to-be-processed signal to obtain a multi-order intrinsic mode function component corresponding to each to-be-processed signal; according to the multi-order intrinsic mode function component corresponding to each to-be-processed signal, determininga multi-order principal component of each to-be-processed signal by adopting a principal component analysis method; determining an effective signal component of each to-be-processed signal by adoptinga canonical correlation analysis method according to the multi-order principal components of all the to-be-processed signals; and reconstructing according to the effective signal component of each path of to-be-processed signal to obtain each path of corrected to-be-processed signal. According to the method, the static effect can be corrected, and the quality of the reconstructed signal is improved.

The invention provides a method for improving the linearity of a touch coordinate trajectory. The method comprises the following steps: reading unprocessed two-dimensional data of a capacitive touch panel, and then reading a pixel of the unprocessed two-dimensional data and adjacent domains of the pixel; judging whether a pixel value of the pixel is larger than a critical value or not, and judging whether the pixel values of the adjacent domains are larger than the critical value or not if the pixel value of the pixel is not larger than the critical value; setting the pixel value of the pixel as a first set value if none of the pixel values of the adjacent domains is larger than the critical value; and retaining the pixel value of the pixel if at least one of the pixel values of the adjacent domains is larger than the critical value, so as to increase the linearity of the unprocessed two-dimensional data, and further protect the two-dimensional data from noise interference.

The invention discloses a phase-locked loop with a low-gain voltage-controlled oscillator. The phase-locked loop comprises a phase / frequency detector, a charge pump, a low-pass filter, an oscillator, a low-gain voltage-controlled circuit and a first frequency eliminator, wherein, the phase / frequency detector is used for generating a detection pulse according to a phase / frequency difference between a reference clock and a frequency-eliminated oscillation clock; the charge pump is used for generating detection voltages according to the detection pulse and further accumulating the detection voltages; the low-pass filter is used for generating an oscillator control voltage according to the detection voltages; the oscillator is used for generating an oscillation clock according to the oscillator control voltage; the low-gain voltage-controlled circuit is used for adjusting the oscillation clock of the oscillator according to a voltage boundary, temporarily determining the oscillation clock by using a first group of voltage boundaries and adjusting the oscillation clock to a relatively stable scope by using a second group of voltage boundaries within a relatively small scope; and the first frequency eliminator is used for eliminating the frequency of the oscillation clock of the oscillator, so as to generate the frequency-eliminated oscillation clock and transmit to the phase / frequency detector.

The invention discloses a control driving method for a medical accelerator frame, which comprises the steps that S1, V / F output is carried out, wherein frame angle information is sampled in real time, the sampled frame angle information is sent to a V / F output unit and a judgment unit after being parsed, and the V / F output unit converts the frame angle information into a frequency value and then outputs the frequency value to a main control computer in real time; S2, the main control computer judges whether a frame zero position calibration unit completes a frame zero position calibration operation or not, a step S4 is executed when the frame zero position calibration operation is completed, and a step S3 is executed if the frame zero position calibration operation is not completed; S3, the step S4 is executed after the frame zero position calibration operation is performed; and S4, the main control computer sends a rotation command to a host command response unit, the host command response unit responds to the rotation command and sends the rotation command to a frequency conversion unit, and the frequency conversion unit carries out three-stage speed variation control on the frame according to the rotation command. According to the invention, control driving for the medical accelerator frame is realized by adopting a control driving system of the medical accelerator frame, and the control driving method has the advantages of good reliability, high control precision in frame rotation and the like.

An object of the present invention is to provide an electrophotographic photoreceptor capable of recording management information for managing the electrophotographic photoreceptor in a noncontact manner, and improving management of the electrophotographic photoreceptor. An electrophotographic photoreceptor includes a conductive base, a photosensitive layer and a flange portion, wherein a noncontact information medium provided with an antenna part which communicates in a noncontact manner with a reader / writer of a main body of an electrophotographic image forming apparatus and a control part which stores management information for managing the electrophotographic photoreceptor and controls the antenna part so as to communicate with the reader / writer is disposed onto the conductive base.