147results about How to "High speed detection" patented technology

In the invention, a particular-region such as red-eye region of a photographed image is detected, the image including a person as an object. At first a particular region candidate satisfying detection conditions for the particular region candidate is detected from the image. Then, a face region of the person satisfying detection conditions for the face region of the person is detected and the particular region candidate is specified as a particular region to be detected, in a condition that the particular region candidate is included in the detected face region. On the other hand, the image is divided into first and second regions at least before the detecting of the face region of the person. The detection conditions used for the detection for the particular region candidate or the detection for the face region of the person are changed between the first region and the second region of the image.

A defect detection apparatus (1) comprises an image pickup part (3) for picking up an image of a substrate (9) to acquire a grayscale target image, from which pixel values of the target image are sequentially outputted to a defect detector (43). The defect detector (43) compares the target image with a reference image to generate a defect region image representing regions of defects included in a plurality of predetermined inspection regions, to be stored in a defect region image memory (44). A computer (5) obtains an area and a barycentric position of each of the defects in the defect region image to specify an inspection region including the defect and performs limitation (i.e., selection) of defects on the basis of a defect detection condition set for each inspection region on the area of defect. It is possible to detect defects with high efficiency by using a defect detection condition on a different area of defect for each inspection region.

The invention discloses a weld appearance shape based on line laser scanning and a surface defect detection method. The method comprises the steps of acquiring the actual profile curve of any section of a welded joint by laser; carrying out high-dimensional fitting on the actual profile curve to obtain a fitting profile curve, so as to obtain a first-order derivative curve of the fitting profile curve; determining the addressing ranges of the starting point and the final point of the welded joint by the first-order derivative curve; finding a point which has maximum differential value with the fitting profile curve on the actual profile curve as the starting point and final point of the section of the welded joint to obtain an integrally three-dimensional profile image of the welded joint. The welded joint is deemed to have a defect when a differential value between any point of the profile curve of the welded joint and the fitting profile curve exceeds the preset standard value. According to the detection method provided by the invention, the starting point and the final point of the welded joint can be accurately judged, and various surface defects of the welded joint can be precisely judged.

A double-radiant-source framework used for a container detecting system, which belongs to the technical field of radiation detection, having a horizontal accelerator, a vertical accelerator and a gantry tower composed of a left vertical girder, a right vertical girder, an upper cross girder, and a lower cross girder. A horizontal collimator and a vertical collimator are disposed in front of the frontal face each of the horizontal accelerator and the vertical accelerator. The horizontal collimator and the vertical collimator are fixed on the left vertical girder and the upper cross girder of the gantry tower, respectively. The radiation beams defined by the horizontal collimator and the vertical collimator are two planes oriented parallel to each other. A double-detector arm is disposed inside the right vertical girder of the gantry tower, and detector modules are disposed inside the double-detector arm for receiving the two different planes of radiation beams defined by and emitted from the horizontal collimator and the vertical collimator. Detector modules are disposed inside the upper cross girder and the lower cross girder respectively for receiving separately radiation beams defined by and emitted from the horizontal collimator and the vertical collimator. The container detecting system can reduce the area covered by the scanning channel of the system, and make the transportation, installation and use convenient, and improve the quality of the detected images.

The invention provides a posture detecting device, which comprises a tilt detecting unit as rotatably supported around two shafts perpendicular each other to an outer frame and for detecting a tilting from the horizontal, encoders provided on each of the shafts, motors provided so as to rotate each shaft, and a first arithmetic processing unit for driving/controlling the motor based on a detection result from the tilt detecting unit, wherein the first arithmetic processing unit drives the motors so that the tilt detecting unit detects the horizontal based on a signal from the tilt detecting unit when the outer frame is tilted and calculates a posture of the outer frame based on outputs of the encoders when the tilt detecting unit detects the horizontal.

The present invention provides a method and device for detecting the most suitable tooth matching angle of a gear by performing all tooth detection and its signal processing in a short time, thereby canceling the cumulative pitch errors of the left and right tooth surfaces, preventing cutting resides left on the left and right tooth surfaces, and reducing the cutting allowances of the left and right tooth surfaces to irreducible minimum values.According to the left tooth surface (28) which is most considered to leave cutting residue and having a maximum cumulative pitch error AL max (when the clockwise direction is a plus direction) and the right tooth surface(29) having a minimum cumulative error AR min (when the clockwise direction is a plus direction), these cumulative pitch errors are canceled. A correction value d for reducing the cumulative pitch errors after cutting is determined, a reference tooth groove angle 0 is corrected with the correction value d, and thus the tooth matching angle of a work gear(14) is determined.

Provided are a capacitive coordinate input device and a capacitive coordinate input method for detecting at high speed the position of an object, such as a human finger or a pen, by detecting a change in capacitance at each intersection of a plurality of electrodes arranged corresponding to two-dimensional coordinates. Tri-state driving is performed such that, immediately after a voltage of a transmitting electrode is changed, impedance of other transmitting electrodes having no voltage change is temporarily increased.

The invention relates to a chip type electronic element appearance inspection machine in the field of electronic element manufacturing and inspection. The chip type electronic element appearance inspection machine comprises a feed mechanism, a transparent turntable conveying mechanism, six sets of inspection mechanisms, a sorting mechanism and a control system; the feed mechanism comprises a disk feeder and a straight feeder; the transparent turntable conveying mechanism comprises a glass disk; each inspection mechanism comprises an inspection unit, a CCD (Charge Coupled Device) camera unit, LED (light-emitting diode) illumination units and a focusing unit, and the six sets of inspection mechanisms are arranged over, under and on the edge of the transparent glass disk; and the sorting mechanism comprises a high-speed electromagnetic valve, an acceptable product bin, an unaccepted product bin and a reinspection bin. Since the glass disk is used by the chip type electronic element appearance inspection machine, the six sides of an electronic element can be inspected at high speed; since the sorting mechanism is used, the chip type electronic element appearance inspection machine has a simple structure, and is convenient to maintain; because the inspection mechanisms can directly shoot the six sides of the electronic element and transmit information, the chip type electronic element appearance inspection machine can be adapted to high-speed inspection operation; and manual operation is replaced, the inspection quality is stable, and the cost is low.

A mathematical expression structured language object search system according to the present invention includes a mathematical expression structured language search engine (4) for collecting web documents having a mathematical expression structured language object embedded therein by a crawler beforehand based on a document tree structure of the mathematical expression structured language object, indexing the web documents using the document tree structure of the mathematical expression structured language object as an index term, and storing the indexed web documents in a database in the form of inverted files; a web browser serving as a client (1); and a server (3) for receiving search query information from the client (1), inputting a search query into the mathematical expression structured language search engine (3) based on the search query information, thereby performing a search and thus acquiring a web document or a web document part including a related mathematical expression structured language object, and then transmitting the acquired web document or web document part to the client (1).

The invention discloses a room-temperature adjustable sub-Terahertz wave detector and a preparation method. A graphene field effect transistor with high migration rate and adjustable carrier concentration is taken as a basic structure unit, and the field effect transistor is provided with a group of source and drain electrodes and cleavage grid electrodes of a sub-Terahertz wave coupled antenna. The detector is integrated with log-periodic antennas and corresponding feed electrodes on a sapphire substrate; the detector is provided with a graphene conducting channel transferred in an antenna distance; an aluminum oxide gate dielectric layer is arranged on the graphene conducting channel, and finally the cleavage grid electrodes and the corresponding lead electrodes are integrated on the aluminum oxide gate dielectric layer of the graphene conducting channel, so that adjustable sub-Terahertz wave detection is realized. The detector has the advantages that the detector is an adjustable lightguide-like and photovoltaic-like detector with high speed, wide band and high response; and the integration level, technical maturity and repeatability of the device lay the foundation of large-scale application of Terahertz detectors.

The invention discloses engine cylinder cover defect automatic detection equipment, and belongs to the field of machine vision detection equipment. The equipment mainly comprises a frame, a catching device, a delivering unit, a vision imaging unit, and an electric control unit. The catching device is arranged on the front end and is used to catch an engine cylinder cover from a transportation guide rail to a transmission device platform; the transmission device platform is arranged on the frame and can stably deliver the cylinder cover in a uniform speed; the vision imaging device is arranged on an optical support and is used to scan the images of cylinder cover; a position sensor is arranged on two side of the whole machine and is used to detect the position of cylinder cover during the transportation process; the control part of the equipment is connected to an IPC (industrial personal computer), and all control commands are sent by the IPC. The equipment is used to recognize and sort defects on the surface of engine cylinder cover such as sand holes, pores, bonded sand, scars, concave-convex, and the like; and thus the surface defects on the surface of cylinder cover can be automatically detected to ensure the stable and reliable quality of products.

The first opening 31 and second opening 32 are formed in the rotating plate 3 attached to the rotation axis 2 of an absolute encoder 1 in a prescribed positional relation, and a two-dimensional profile sensor 5 is installed so as to face the lower side 3a of the rotating plate 3. Also, a light supplying unit 4 consisting of light sources 41 and 42 is installed so as to face the photosensitive area of the profile sensor 5 with the openings 31 and 32 of the rotating plate 3 placed therebetween. And, based on a correlation between the first detected position P1 and second detected position P2 where measuring light emitted from the light sources 41 and 42 is passed through the openings 31 and 32 of the rotating plate 3 and is detected by the profile sensor 5, an absolute value of the rotating angle of the rotation axis 2 is calculated, wherein it is possible to achieve an absolute encoder capable of accurately measuring the absolute value of the rotating angle of the rotation axis with a simple construction.

The invention discloses a graphene-phosphorus heterojunction photodetector and a manufacturing method, which belong to the technical field of optical communication. the graphene-phosphorus heterojunction photodetector comprises a silicon substrate, a silicon dioxide layer, a plurality of parallelly-arranged phosphorus layers and a graphene layer covering each phosphorus layer sequentially arranged from bottom to top in an overlapped mode, wherein the phosphorus in each phosphorus layer and the graphene in the graphene layer form a heterojunction; the graphene layer covers the phosphorus layer completely; an electrode is arranged above the edge of the graphene layer; and the electrode extends above the area where the phosphorus layer and the graphene layer are overlapped. In order to solve the above technical problem, very high photoelectric conversion efficiency in the optical communication band can be realized, the manufacturing method is simple, the cost is low, and the repeatability is good.

The invention belongs to the pharmaceutical field and relates to the fast detection and structural identification of complex components of the traditional Chinese medicine. The invention provides a commonality method for the fast detection and structural identification of the complex components of the traditional Chinese medicine, which comprises the following steps: 1. the extraction of all the components; 2. mass spectrometric analysis; 3. determining the main components; 4. multi-stage mass spectrum data acquisition; 5. determining diagnosis ions and the components are grouped according to the diagnosis; 6. connecting all the groups into a component network by bridging components; 7. carrying out database search by predicting chemical formulas and obtaining a candidate structure set of each component; 8. firstly identifying the component with the least candidate structure in the group with the most components, according to that, analyzing the structure of the group of diagnosis ions, then screening the candidate structure of other components in the group by taking the diagnosis ions as standards, carrying out identification, finally obtaining the structure of all the diagnosis ions by the bridging components and further identifying all the components in the component network; and 9. identifying the components which are not grouped and separated from the component network by the continuous screening of specific neutral loss.

A data acquisition device for an oil pipeline flux leakage detector comprises a sensor array, an analog-digital conversion module, a level conversion circuit, a CPLD module and a power circuit. An input end of the sensor array is connected with a detected flux leakage field, a signal output end of the sensor array is connected with a signal input end of the analog-digital conversion module, a signal output end and a control end of the analog-digital conversion module are both connected with a signal input end of the level conversion module, a signal input end of the level conversion module is respectively connected with a signal input end and a control end of the CPLD module, an output end of the power circuit is respectively connected with the sensor array, the analog-digital conversion module, the level conversion circuit and the CPLD module. The data acquisition device for the oil pipeline flux leakage detector achieves the conversion from a three-axis analog signal acquired by the sensor array to a digital signal and transmits the digital signal to the CPLD module, the CPLD module caches the digital signal and transmits the digital signal to the next level, flux leakage detection precision can be improved, and tiny pipe wall defects further can be detected.

The invention discloses a network intrusion detection method based on double adaptive regularization online extreme learning machine; empirical risk and structural risk are fully balanced in calculation of output weight Beta, ridge regression factor C based on Tikhonov regularization is introduced, and over-fitting and ill-conditioned problems in network intrusion detection are eliminated. In the initial phase, samples are extracted randomly from NSL-KDD dataset as an initial training set, and the output weight Beta is adaptively initiated according to the size of the initial training set; in the continuous learning phase, optimized value of the ridge regression factor C is acquired by means of leave-one-out cross validation based on singular value decomposition and prediction sum of squares according to all the datasets currently acquired and is updated adaptively; the output weight Beta is adaptively updated according to the size of the dataset arrived each time. The network intrusion detection method based on double adaptive regularization online extreme learning machine is capable of detecting network intrusions efficiently and quickly, and generalization performance and real-time performance of the network intrusion detection algorithm are improved significantly.

The present invention is a detection system of a segment including specific sound signal which detects a segment in a stored sound signal similar to a reference sound signal, including: a reference signal spectrogram division portion which divides a reference signal spectrogram into spectrograms of small-regions; a small-region reference signal spectrogram coding portion which encodes the small-region reference signal spectrogram to a reference signal small-region code; a small-region stored signal spectrogram coding portion which encodes a small-region stored signal spectrogram to a stored signal small-region code; a similar small-region spectrogram detection portion which detects a small-region spectrogram similar to the small-region reference signal spectrograms based on a degree of similarity of a code; and a degree of segment similarity calculation portion which uses a degree of small-region similarity and calculates a degree of similarity between the segment of the stored signal and the reference signal.