124results about How to "High acquisition rate" patented technology

Apparatus, method, logic arrangement and storage medium are provided for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source can be split into N spectral bands. The N spectral bands can be individually detected and processed to provide an increase in the signal-to-noise ratio by a factor of N. Each spectral band may be detected by a separate photo detector and amplified. For each spectral band, the signal can be band p3 filtered around the signal band by analog electronics and digitized, or, alternatively, the signal may be digitized and band pass filtered in software. As a consequence, the shot noise contribution to the signal is likely reduced by a factor equal to the number of spectral bands, while the signal amplitude can remain the same. The reduction of the shot noise increases the dynamic range and sensitivity of the system.

An apparatus and method are provided. In particular, at least one first electro-magnetic radiation may be provided to a sample and at least one second electro-magnetic radiation can be provided to a non-reflective reference. A frequency of the first and/or second radiations varies over time. An interference is detected between at least one third radiation associated with the first radiation and at least one fourth radiation associated with the second radiation. Alternatively, the first electro-magnetic radiation and/or second electro-magnetic radiation have a spectrum which changes over time. The spectrum may contain multiple frequencies at a particular time. In addition, it is possible to detect the interference signal between the third radiation and the fourth radiation in a first polarization state. Further, it may be preferable to detect a further interference signal between the third and fourth radiations in a second polarization state which is different from the first polarization state. The first and/or second electro-magnetic radiations may have a spectrum whose mean frequency changes substantially continuously over time at a tuning speed that is greater than 100 Tera Hertz per millisecond.

Apparatus and method for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source is split into N spectral bands. The N spectral bands are individually detected and processed to provide an increase in the signal-to-noise ratio by a factor of N. Each spectral band is detected by a separate photo detector and amplified. For each spectral band the signal is band pass filtered around the signal band by analog electronics and digitized, or, alternatively, the signal may be digitized and band pass filtered in software. As a consequence, the shot noise contribution to the signal is reduced by a factor equal to the number of spectral bands. The signal remains the same. The reduction of the shot noise increases the dynamic range and sensitivity of the system.

Using distributed acoustic sensing (DAS) fiber optic cable for borehole surveying and/or well ranging.

The invention discloses a solar cell panel defect detection system and a solar cell panel defect detection method based on CIS image acquisition. The solar cell panel defect detection system comprises a conveying device, an image acquisition device and a data processing module, wherein the image acquisition device is arranged right above the conveying device, and the image acquisition device is connected with the data processing module; and a solar cell panel is transported by means of the conveying device, the image acquisition device acquires an image of the solar cell panel and transmits the image to the data processing module when the solar cell panel passes beneath the image acquisition device, and the data processing module performs defect analysis and detection on the acquired image. According to the solar cell panel defect detection system and the solar cell panel defect detection method, image acquisition is performed by means of the image acquisition device, real-time performance is improved and cost is reduced, defects of the detected solar cell panel comprise unfilled corners, edge breakage, openings or holes and contamination, various defect types can be detected and detection efficiency is ensured. The CIS image acquisition system is utilized to acquire images, the image acquisition rate can be improved, the real-time performance can be improved, and the cost can be reduced.

The invention discloses a tracking method, a tracking system, and a tracking device for rail profile. The method comprises: obtaining at least one frame of rail profile image, wherein each frame of the rail profile image is an image obtained by fusing images in multiple directions of the collected rail according to a frame in the process of measuring the rail profile by using the structured light;identifying the light strip type of the laser stripe in each frame of the rail profile image based on the deep learning profile identification model; tracking the position of the target stripe in therail profile image of the current frame based on the spatiotemporal context visual tracking algorithm in a case that the light strip type of the laser stripe in the rail profile image of the currentframe is the same as the previous frame; or tracking the position of the target stripe in the ail profile image of the current frame based on the template matching algorithm in a case that the light strip type of the laser stripe in the rail profile image of the current frame is different from the previous frame. According to the tracking method, the tracking system, and the tracking device for rail profile, the technical effect of the real-time detection of the rail profile under the high-speed dynamic driving environment is realized.

A data reader comprises a camera that has an adjustable resolution and acquisition speed. The camera is maintained at a low level resolution and fast speed and is periodically actuated to acquire images. When an acquired image indicates that an object is present, the resolution of the camera is increased, and a higher resolution image is acquired and decoded. The imaging system of the camera is therefore used to trigger data acquisitions, thereby eliminating the need for external triggers and sensor devices.

The invention relates to an X-ray on-line detection probe of a steel wire rope core conveyor belt and a signal acquisition and processing method. The X-ray on-line detection probe of the steel wire rope core conveyor belt belongs to the field of non-destructive X-ray on-line probing equipment. Hardware design of the X-ray on-line detection probe of the steel wire rope core conveyor belt is as follows: a photoelectric conversion module is used for realizing conversion from X-ray signals to electrical signals; four lines of A/D (analog/digital) modules are used for realizing sampling from analog signals to digital signals; and a signal acquisition and processing module in the structure of an ARM (advanced RICS (reduced instruction set computing) machine and an FPGA (field programmable gate array) is used for realizing the control of the A/D modules and the processing of image element data. The signal acquisition and processing method comprises the following steps: using the FPGA to adopt a state machine to realize the sampling control of the four lines of the A/D modules; adopting a three-point sectional image element non-homogenization correction algorithm based on a response model to realize homogenization processing of the image element data in the FPGA; and figuring out a coefficient of the correction algorithm through the ARM and performing median filtering processing on the image element data after completing the correction. By adopting the probe in the invention, the high-precision dynamic real-time detection of the conveyor belt can be realized, thereby facilitating diagnosis of elongation, rust, fracture and other situations of a joint of a steel rope core.

The invention belongs to the technical field of data communication, and relates to a high-speed asynchronous data acquisition system based on an AHB bus. The high-speed asynchronous data acquisition system comprises a field programmable gate array (FPGA), an embedded processor core ARM9, an off-chip SDRAM, a JTAG interface and an off-chip personal computer (PC), wherein the embedded processor core ARM9 is used for starting data acquisition, data reading and data storage; the off-chip SDRAM is used for data storage; the JTAG interface is used for transmitting the data from the SDRAM to the PC for storage so as to facilitate follow-up treatment; the FPGA comprises a data acquisition module, an AHB bus module and a wrap module; and the data acquisition module is used for realizing data acquisition and converting the data into an appropriate format so as to be read by the bus, the AHB bus module is used for connecting an AHB master and an AHB slave, and the wrap module is used for converting ARM9CPU time sequence into AHB master time sequence and realizing address conversion by mapping the address of the ARM9CPU. Asynchronous working mechanism and synchronization treatment are adopted for data acquisition and transmission, the asynchronous working mechanism improves the data acquisition speed, and the synchronization treatment ensures the reliability of the sampling circuit, can inspect the system function under different environments and obviously improves the reliability and adaptability of the acquisition system; and the invention can be widely applied to the fields of data communication, integrated circuit design verification and the like.

The invention relates to a system for supporting real-time processing inside a streaming data piece and a design method. The system comprises a streaming data acquisition module, a streaming data transcoding module, a streaming data caching module and a streaming data display module, wherein the streaming data acquisition module utilizes a VHDL to design a streaming data sensing device configuration unit and a streaming data parallel acquisition unit, the streaming data transcoding module utilizes the VHDL to establish a production line and a shifting operation architecture and improve the efficiency of conversion from a YCbCr format to an RGB format, the streaming data caching module utilizes FIFO to establish a two-stage queue cache, solve the problem of data communication between three-stage asynchronous clock domains and further solve the problem of data collision caused by the fact that the streaming data acquisition speed and the transcoding speed are inconsistent, and the streaming data display module utilizes the VHDL to design an HDMI chip configuration unit and enable the streaming data to be displayed on the external display through an HDMI interface. The streaming data processing system integrates acquisition, transcoding, caching and display functions and can improve real-timeliness of streaming data processing, and high integration and miniaturization of the streaming data processing system can be also promoted.

The invention relates to a wind turbine blade for a wind turbine, having a tip end area, a tip end and a root end area and a lightning protection system. The lightning protection system comprises at least one metal foil, wherein said metal foil extends continuously from a first end in the tip end area towards the root end area of the blade and wherein the metal foil is arranged in proximity to the outer surface of the blade, so that the metal foil is adapted to function as a receptor of a stroke of lightning and as a down conductor. The lightning protection system further comprises a first metallic lightning receptor being in direct electrical contact with the metal foil, wherein the first metallic lightning receptor is disposed in proximity to the outer surface of the blade and between the first end of the metal foil and the blade tip end.

A high speed data logging system of single plate voltage on fuel cell is prepared for forming up-level computer by CAN card interface and double-way CAN card, forming down-level computer by fuel cell controller with CAN card interface, fuel cell single plate data logging controller with CAN card interface; connecting the first output port of up-level computer to CAN interface on said data logging controller and connecting CANB port on said data logging controller to can interface on voltage collection board of fuel cell single plate at down-level computer through standard CAN cable.

The invention relates to a finger vein collecting device which comprises a shell, a CMOS (complementary metal-oxide-semiconductor) sensor and a backlight unit. The finger vein collecting device is characterized in that the middle part of the shell is provided with a finger hole, a position in the shell, which corresponds to the position of the finger hole, is provided with a finger pressing surface, and the shell is internally provided with a finger vein image collector which comprises a circuit control module and an optical system. The circuit control module comprises a main control chip, a crystal oscillation circuit, a memory unit chip, an encryption chip, a voltage-reducing integrated circuit and a data communication unit. The optical system is a lens system and comprises an infrared filter, a plane mirror and a plano-convex lens. The finger vein collecting device adopts the modular design; the optical system adopts the reasonable light source design, is shorter and can uses a low-cost non-professional lens; the circuit control module is of a small package; and the finger vein collecting device overcomes defect of large volume of the same type of finger vein collecting device, reduces the cost of the system greatly, is convenient to carry, can be used together with a computer and improves the finger vein collecting speed and identifying precision significantly.

The invention relates to a method for improving the frame rate of CCD image collecting system. The invention sets the interested region of CCD imaging region as the sub-window according to the need of user, which comprises the first pixel coordinate (I, j) and the its size (m rows X n lines); the invention drives the CCD operate in the sub-window operational mode as only outputting the pixels of said sub-window from the CCD while the pixels outside the sub-window are distinguished inside the CCD chip. So the processing time of each frame image is reduced, and the frame rate is improved. In addition, since the size and the position coordinate of said interested region can be adjusted freely according to the need of user, the adaptability of CCD image collecting device is increased.

The invention discloses a three-dimensional planta pedis scanning device and a scanning method based on a single-camera four-step grating phase shift method. A sinusoidal grating, a servo motor and agear, which are linked, are arranged on a transverse supporting plate on a side plate of a box body; a laser light source, which is adaptive to the sinusoidal grating, is arranged at the bottom of thebox body; an image reflective mirror surface is arranged in the middle of the box body; a single camera is arranged at the other end of the box body; the sinusoidal grating is irradiated on planta pedis of a human body; a physical grating, under the control of the servo motor, is moved by a certain distance; four distorted gratings that a phase difference is [phi]/2 are formed on the surface of the planta pedis; by virtue of an industrial camera, four distorted grating images are acquired; and the gratings are subjected to phase analysis, so that three-dimensional data information of the planta pedis is obtained. According to the scanning device and the scanning method provided by the invention, the grating images are acquired by virtue of the high-precision industrial camera, and with the adoption of the four-step phase shift method, random noise can be filtered out and precision can be improved; and the system, which just uses one camera, can reduce system cost and implement high-precision scanning.

The invention relates to a single finger print collecting device, which is an improvement on a small finger print collecting device disclosed in the prior patent with a number of CN102043947A. A concave-convex lens is arranged between a prism of an optical single finger print imaging module and a light path between plane mirrors; the convex surface of the concave-convex lens is opposite to the prism; the area of the large end surface of the prism, namely a living person single finger print collecting window, is larger than the product of 12.8mm and 16.5mm; a CMOS (complementary metal-oxide-semiconductor) sensor has the pixel of at least 8,215; an optical system, a circuit control module and a shell have the characteristic of small size; the cost of the single finger print collecting device is further saved, and the single finger print collecting device is convenient to carry, can be used together with a computer to finish the user single finger print collecting, the single finger print comparing, the abnormal alarming and the control signal outputting, and improves the finger print collecting speed and identifying accuracy significantly; and the living person single finger print collecting window size, the image resolution and image gray level meet the requirements of the Chinese public security department and the Federal Bureau of Investigation in America.

The invention discloses an automobile data recorder, and relates to an automobile traveling information management system. The automobile data recorder comprises a traveling data acquisition module, a data microprocessor and an information feedback module, wherein the traveling data acquisition module is provided with cameras, a photoresistance sensor and a speed sensor; the cameras are mounted in four positions at the front part, the rear part, the left part and the right part of an automobile and are used for acquiring real-time image information; the photoresistance sensor is used for acquiring the ambient environment brightness and the light intensity of the automobile; the output ends of the cameras, the output end of the photoresistance sensor and the output end of the speed sensor are respectively connected with the input port of the data microprocessor; the information feedback module is provided with a display screen and a GPRS module; the input end of the display screen and the input end of the GPRS module are respectively connected with the output port of the data microprocessor; and the output end of the GPRS module is used for transmitting promoting information to a user. The traveling process and the parking process can be recorded in a video manner, the speed, the acceleration and the corresponding time of the traveling process can be stored, and the automobile data recorder is applicable to day and night.

The invention discloses two multi-angle image acquisition devices and two multi-angle optical characteristic detection equipment, cameras are used for acquiring images in a to-be-detected area on a detected object, and then the acquired images are compared to judge if the multi-angle optical characteristics exist in the to-be-detected area. The devices and the equipment disclosed by the invention are low in cost, improve the image acquisition quality and improve the detection effect of the multi-angle optical characteristics.

The invention discloses a sampling and sample preparation device for river polluted bottom sediment for biotoxicity test and a working method, and belongs to the technical field of river regulation. The device comprises a sample preparation box body, a position adjusting element, a bottom sediment collecting element, a bottom sediment sample preparation element and a power supply. By arranging thebottom sediment collecting element at the bottom end of the position adjusting element, the bottom sediment collecting position can be automatically adjusted through the position adjusting element, time and labor are saved, the mechanization degree is high, bottom sediment at multiple collecting points can be collected at the same time, the number of collected samples is increased, the collectingefficiency is improved, and the later bottom sediment toxicity detection accuracy is improved; muddy water in a collected bottom sediment sample is subjected to in-situ separation through the bottomsediment sample preparation element, the detection period is shortened, the separated sample is divided into a plurality of samples to be placed in different liquid containing holes, when the sample needs to be moved, only the liquid containing drawer needs to be drawn out. The structure is simple, and the operation is convenient.