148results 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.

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.

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 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.