158results about How to "With non-contact" patented technology

The invention discloses a welding robot control method, and relates to a welding robot control device. According to the welding robot control method, a laser vision sensing system, a laser barcode scanning system, a main industrial personal computer, a driving device and a wireless demonstration device are utilized. A weldment is scanned through the laser bar code scanning system to form a three-dimensional model, the three-dimensional model is led into the main industrial personal computer, and welding information is directly designated on the three-dimensional model through the wireless demonstration device. The welding information comprises positions and lengths of weld joints, and the swing mode of a welding gun. When welding workpieces needs to be produced in a batch mode, a bar code identification system can be used for reading the welding information of welding bar codes on the welding workpieces, then the welding information is sent to the main industrial personal computer, and the main industrial personal computer converts the information of the bar codes into welding signals. The welding robot control method has the advantages that closed-loop control is realized, demonstration efficiency is improved, control of a welding robot is convenient, the electromagnetic field disturbance resistance ability is high, the demonstration efficiency and the quality of the weld joints of the workpieces are improved, the adaptive ability of a control system is enhanced, and the reliability is high.

The invention discloses a method for detecting ferrous magnetic material thickness by utilizing electromagnetic ultrasound, and is characterized in that a magnet inside an electromagnetic ultrasound transducer takes a U-shaped permanent magnet, a coil takes a PCB double-layer coil that takes the shape of a Chinese character, 'Hui' and is positioned at an opening of the permanent magnet, and an effective lead part of the coil is parallel to the direction of a bias magnetic field. In thickness measurement, the electromagnetic ultrasound transducer is positioned on a detected object, high-frequency electric sinusoidal pulse current passes through the coil, according to the magnetostrictive effect, the detected object generates partial stretching deformation and oscillation, and consequently excites ultrasonic transverse wave and leads the ultrasonic transverse wave to spread downwards in a direction vertical to surfaces of the detected object. The ultrasonic wave is reflected by a lower surface of the detected object, and then the reflected wave is received by the coil. A received ultrasonic signal is collected and input into a computer after being amplified. If the ultrasonic wave spreading velocity in the detected object is v, and the spreading time is t, then the thickness of the detected object d is equal to a half of v multiplied by t. The method for detecting ferrous magnetic material thickness by realizing the thickness detection of ferrous magnetic materials, has the non-contact and couplant-free advantages, and can be used in high-temperature environment and for detecting materials with rough surfaces.

The invention discloses an automatic vehicle overall size measuring system and method based on vision. The system comprises four cameras, four pan tilts, a transverse horizontal camera support, a longitudinal horizontal camera support, an image collection card, a computer system and a position sensor. Each camera is installed in one pan tilt. Two cameras are fixed to the transverse horizontal support, and the other two cameras are fixed to the longitudinal horizontal support. The position sensor is installed at the position, being about to enter the view field range of the cameras, of a vehicle and used for sensing the position of the vehicle, and provides a trigger signal for the computer system. The automatic vehicle overall size measuring system can reduce the cost and has the advantages of being automated, contactless, high in precision, high in adaptability and the like, and can effectively recognize overrunning vehicles, overload vehicles and other illegal vehicles, meet the requirements of vehicles for comprehensive performance detection, and improve highway traffic system monitoring performance and the vehicle management level.

The invention discloses a machine-vision based liquid level detection device and method. In the method, algorithm processing is carried out on a field liquid level image acquired by using an infrared camera to obtain real-time liquid level height information so as to obtain the instant height of the liquid level. In order to obtain the height information of the liquid level accurately and efficiently, five self-designed algorithms including a cameral distortion correction algorithm, a self-adaptation detection coordinate setting algorithm, a liquid level line segmentation algorithm, a data filter algorithm and a data setting algorithm are used in the machine-vision based liquid level detection device; and meanwhile, in order to implement the algorithms effectively, a calibration manner is introduced in the invention and is applied to a target tracking process of a camera. In the invention, a single-chip microcomputer of an ARM (Advanced RISC (Reduced Instruction Set Computer) Machine) series is used as a main processor. By adoption of self-adaptation coordination setting, the device is not only suitable for open type and / or closed type liquid level detection environments but also suitable for mechanical equipment positioning and product counting, and has a very broad application prospect.

The invention relates to a system for realizing smart card authentication based on voiceprint recognition. The system comprises an authentication client and an authentication server, wherein the authentication client comprises a voiceprint sample acquisition module, a voiceprint feature extraction module and an NFC (near field communication) module; the authentication server comprises a server communicating module and a voiceprint feature matching module; the server communicating module is used for receiving authentication request information sent by the authentication client and judging the validity of the authentication request and returning to an authentication result. The invention further relates to a method for realizing the smart card authentication based on the voiceprint recognition. With the adoption of the structure of the system and the method for realizing the smart card authentication based on the voiceprint recognition, related information on a smart card can be read through an NFC function, the irreplaceable, anti-theft and anti-lost characteristics of a voiceprint are used, the authentication can be guaranteed to be finished effectively, and a wider application range is provided.

The invention provides a high-speed precision crystal silicon laser etching apparatus and method. The method comprises the following steps: (A) placing a single crystal silicon wafer or a polycrystalline silicon wafer on a four-dimensional precision moving platform for laser processing by using a specific manipulator, with the aid of an observation and monitoring CCD system; (B) precisely focusing a laser beam on the surface of the silicon wafer, scanning the surface of the silicon wafer at a high speed by using a three-dimensional dynamic focusing vibration mirror in cooperation with a specific telecentric field lens, rising the surface etching temperature of the silicon wafer, and feeding phosphorous paste or phosphoric acid to a high-speed laser etching line at the same time; and (C) removing the manipulator for the silicon wafer and fixing next silicon wafer at the same time, and repeating the above drilling mode at. The method has the following advantages: laser has the characteristics of non-contact, no environment pollution and easy controllability, and can achieve the automatic control; since the laser focusing spot is in a micrometer size or smaller, thereby achieving high silicon wafer etching accuracy, small heat affected zone at the edge, and little damage to the substrate; and the power generation efficiency of the crystal silicon is further improved, and the production cost is further reduced.

The invention relates to an intelligent home controller based on eye-movement tracking and an intelligent home control method based on eye-movement tracking, and belongs to the field of wireless control. The problem that the existing intelligent home controller adopts a press key or touch input mode, so that the existing intelligent home controller cannot be applicable to special user groups with limb obstacles. The intelligent home controller based on eye-movement tracking comprises an image collecting module, an image processing module, a communication module, an FPGA (Field Programmable Gate Array) module and a sub module, wherein the sub module is integrated inside an FPGA chip. The intelligent home control method based on the eye-movement tracking comprises the steps that: the image processing module performs binarization processing on collected face images; the human eye pupils and the light spot positions, displayed on the human eye scleras, of an infrared lamp are found out; the sight line direction of the human eye is estimated; and in a VGA (Video Graphics Array) liquid crystal display, the designed user interface and the user slight line position are displayed in the liquid crystal display screen by the image display module, and the human-computer interaction is realized. A non-contact control mode is adopted, so that the interference on users is reduced to the greatest degree, and the burden of the user is lightened.

The invention discloses a multi-type welding processing and manufacturing technological method for a full-automatic welding robot. According to the method, the welding process can be achieved reliably, conveniently and rapidly, and the method is suitable for welding of welding seams of products of various types. The method comprises the following steps that 1, the welding robot is assembled on a welding station of a welding production line; 2, the welding robot is initialized after being powered on; 3, whether the angles and zero points of all axes of the welding robot are correct or not is determined; 4, a robot control device main network address and a robot slave network address are set, Cartesian coordinates are defined according to actual needs, and the coordinates of a welding gun are determined; 5, a welding piece is scanned into a three-dimensional model through a laser bar code scanning system, the three-dimensional model is guided into a main industrial personal computer, and welding information is directly designated on the three-dimensional model through a wireless teaching device; and 6, program codes are generated according to scanned three-dimensional model information and welding information through the main industrial personal computer, and are sent to a robot control device.

The invention relates to a remote intelligent testing method of a three-dimensional human body image data network. The method comprises the following steps that: a user acquires a body form picture of a target human body by the camera function of a mobile phone, internet terminal camera or digital camera; the user determines information on a tested part of the human body by human-machine interaction; the user sends the information on the tested part of the human body and height data of the tested human body to a data processing center through a digital network; the data processing center calculates body form data of a human body image by comprehensively using a human body engineering principle and statistic data; the calculated body form data are converted into Chinese and foreign costume size information matched with the body form data of the target human body; and the results of the steps are encrypted and sent to the mobile phone or a network terminal. The method has non-contact, intelligent, multifunctional and networked characteristics. The method can measure a user or others at the same time, can obtain the matched Chinese and foreign costume size information according to the human body test results, and can be applied to industries, such as garment customization, electronic commerce and the like.

The invention relates to a vision-based automatic aviation oil mist nozzle atomization angle detection device. A light source is arranged inside a tank, and an industrial camera is arranged on the outer side of the tank, connected with an explosion-proof computer through an internal digital I / O (input / output) trigger interface card and used for shooting spray of the oil mist nozzle fixed in the tank. A detection method includes the following steps that the industrial camera shoots a digital image of a spray cone angle by receiving an external trigger signal and sends the digital image to the explosion-proof computer; the explosion-proof computer preprocesses the digital image to obtain a binary image; the binary image is subjected to Hough transform to obtain a boundary of degrees of the cone angle and the degrees of the cone angle. By the device and method, the problem about randomness of manual measurement of the aviation nozzle is solved, accuracy is improved, reliability in measurement is guaranteed, and automation level is heightened.

The invention discloses a digital holography-based three-dimensional micro-observation apparatus for cell dynamic of a living organism. According to the apparatus provided in the invention, a microscopic technology of digital holography is employed, so that dynamic three-dimensional microscopic observation without contact, damage and pretreatment on a cell of a living organism can be realized; a fiber optical path is utilized to realize object light illumination and an optical path portion of the object light employs a vertical type structure, so that it is convenient to carry out observationon the cell of the living organism; reference light utilizes a light beam turnover device to control an included angle between the reference light and the object light so as to realize off-axis digitholography; and an infinite distance correction microscopic object lens is employed to carry out pre-amplification and imaging on the cell; simultaneously, a relay lens is utilized to adjust an imaging position and a wavefront curvature of the object light, so that observation resolution is improved. According to the apparatus, layout structures of a plurality of optical elements are compact, flexible and stable thorough a platform; moreover, the apparatus can be applied to dynamic observation on the cell of the living organism for a long time.

The invention discloses a water quality monitoring method based on motion features of an aquatic organism on a picture. A carassius auratus is taken as an indicator organism, two cameras are employed to shoot a swimming picture sequence of the carassius auratus in a fish tank and mean motional velocity, steering number of times, average angle of turning, average inclination angle of the body and time for staying at the upper part of water in a unit time are solved according to the picture. Water quality is automatically judged according to the unusual changes of the five indicators so as to alarm when wastewater is detected to have an exceeding concentration. The method comprises the following steps of: firstly, employing two cameras to shoot the swimming picture sequence of the carassius auratus in the fish tank, detecting target area information of the carassius auratus on the pictures by applying an image segmentation technology in two picture sequences, solving positions and angles of the carassius auratus on the frame pictures according to the target area information, then solving the mean motional velocity, the steering number of times, the average angle of turning, the average inclination angle of the body and the time for staying at the upper part of water in a unit time according to the positions and angles information of the carassius auratus on all the frame images and judging pollution degree of the water according to the five indicators finally. The water quality monitoring method based on the motion features of an aquatic organism on a picture has the advantages of simplicity and easy implementation and solves the problems of the unicity of physical and chemical testing in water quality monitoring and the like.

The invention discloses a photon entrance guard system based on voice control. The photon entrance guard system comprises a mobile terminal and a light control door lock, wherein the mobile terminal comprises a voce identification module, a control module and a sending module, the voice identification module is used for identifying voice information, the control module is used for controlling the sending module according to the identification results of the voice identification module, the sending module is used for sending password information through visible light signals, and the light control door lock is used for executing a door opening or door closing actions according to the visible light signals. Compared with an entrance guard system adopting fixed equipment for fingerprint collection or adopting direct voice identification opening, the photon entrance guard system based on the voice control has the advantages that the password information is sent through the visible light signals. Because the light signals adopt linear transmission, the password information cannot be easily leaked out, the camouflage cheating cannot easily occur, the safety is improved. The voice identification control has the characteristics of non-contact performance, non-invasive performance and easy use, so the voice identification control easily becomes popular by mass consumers, and the photon entrance guard system can fast occupy the markets.

The invention provides a method and system for detecting pedestrian flow by adopting deformable two-dimensional curves. The method comprises the following steps: adopting a camera, a video line, a video acquisition card and a computer (or digital signal processing (DSP)-based video developing board) to set up a system hardware platform and manufacturing a software interface; firstly placing the camera right above a door (channel) to vertically shoot coming-in and going-out actions of the pedestrians downwards, acquiring the color image of each frame and extracting pedestrian heads according to red, green and blue (R, G, B) values of the acquired current frame image; detecting the edge contour of each pedestrian head on the current frame image by adopting the image segmentation technology and then using the deformable two-dimensional curves to fit the edge contour of each pedestrian head on the current frame image by adopting the curve fitting technology to compute the parameter and central coordinate of each two-dimensional curve; comparing the parameter and distance between centers of each two-dimensional curve on the previous frame image with the parameter and distance between centers of each two-dimensional curve on the current frame image to find out the correspondence; and finally counting the numbers of pedestrians who come in and go out according to the positional relationship between the corresponding two-dimensional curves on the previous frame image and the current frame image and a counting line.

The invention relates to an airbag overall dimension detection method based on binocular vision. The airbag overall dimension detection method comprises the steps of: (1) calibrating a binocular vision system by using a calibration board; (2) simultaneously shooting a to-be-detected airbag by using a binocular camera, preprocessing two images, then extracting edges, thinning into single pixel, and filling breakpoints; (3) segmenting and matching a contour curve of the to-be-detected airbag; (4) reconstructing a three-dimensional curve segment, and optimizing the curve segment; (5) performing coordinate transformation on the three-dimensional curve segment of the to-be-detected airbag, and matching the three-dimensional curve segment of the to-be-detected airbag with a three-dimensional digital-analog curve segment of the edge contour of a standard airbag; (6) calculating position tolerances Vx,Vy and Vz of detection points and a form tolerance K of the contour curve segment in which the points are positioned, so as to respectively determine whether the detection points are in the ranges of the position tolerances and the form tolerance. Traditional airbag overall dimension detection methods including a three-coordinate detection method and a test tool detection method can be simultaneously replaced by the airbag overall dimension detection method, the cost can be reduced, the efficiency can be improved, and the airbag overall dimension detection method has the advantages of automation, non contact, high precision, high adaptability and the like and can be used for effectively detecting the overall dimensions of various airbags.

The invention discloses a second harmonic imaging method and a second harmonic imaging device for single suspended particles. According to the method, Bessel laser is adopted for effectively capturing the suspended particles, and remote noncontact and noninvasive capture and high capture efficiency are realized; imaging is realized by second harmonic signals generated on the particles by femtosecond laser, polarization resolution, spectral resolution and three-dimensional imaging are realized, and imaging and observation of fine particles are realized. The device for implementing the second harmonic imaging method has advantages that due to adoption of common optical devices, low cost is realized while imaging of the second harmonic signals can be well realized, and suitableness for popularization is achieved.

The invention discloses a method for detecting damage of a first wall of a fusion reactor in real time based on optical coherence tomography. A detection system comprises a broadband light source, an optical fiber coupler, a self-focusing lens, a detector, an amplifier, a data acquisition unit and the detected first wall. The broadband laser light is divided into two light beams through the 2*2 optical fiber coupler; one light beam is irradiated to a reference mirror and serves as reference light after being reflected; the other light beam is irradiated to the first wall of the fusion reactor and serves as signal light after being reflected by the first wall; an interference signal is generated in the optical fiber coupler by the two light beams; the interference signal is received by the detector and is amplified and processed by a computer to rebuild a real-time three-dimensional depth image of the damage of the first wall; the obtained image is compared with a standard image to visually and conveniently obtain a situation of the damage of the first wall. The invention is based on the optical coherence tomography, is high in resolution ratio and clear in image, and provides a feasible detection method for the damage of the surface and interior of the first wall of the fusion reactor.

The invention relates to a food quality testing system and method based on a laser ultrasound erosion mechanism; in the invention, a pulsed laser is used as a laser source and a capacitance ultrasound transducer is used as a receiving element, so as to build a testing platform for obtaining ultrasound longitudinal signals of food grains; the time-frequency characteristic parameters of the signalsare extracted by utilizing a wavelet packet transforming technology; a mathematical model of the food quality parameters is built based on the least square method; and the classification and evaluation of food quality are finally realized according to the national standards. The system and method related by the invention have the advantages of fast testing, accuracy, no damage, no contact, strongcapacity for resisting interference, high efficiency, no pollution and the like.

The invention relates to a method for detecting the imperfection of food grains. The method comprises the following steps: acquiring collision sound information of each food grain and a specific object, extracting set characteristic information from the collision sound information, and comparing and judging imperfect grains in the food grains according to the characteristic information. The method disclosed by the invention has the following advantages that an impact excitation sound signal of the food grains and a metal plate in the free falling body process is utilized, and the imperfect grains are detected by virtue of extraction and analysis of the characteristic parameters of the signal, so that the detection method has the non-contact characteristic. In the whole detection process, the physical structures of the food grains do not need to be damaged, so that the detection method has the nondestructive testing characteristic; and moreover, according to the detection method, special requirements and limitations on the types and falling postures of the food grains are avoided, and the universality is high.

The invention relates to a non-contact stress detection system and method. The system comprises a coil, an alternating current power supply, a giant magneto resistance element and a steel rail, wherein the giant magneto resistance element is arranged in the coil, the coil is connected with the alternating current power supply, the alternating current power supply on the coil is used for providing alternating current at fixed frequency for the coil, the alternating current can generate an alternating magnetic field, corresponding eddy current is produced by the magnetic field on the steel rail, and the giant magneto resistance element is used for measuring the magnetic field intensity that the magnetic field produced by the alternating current interacts with a magnetic field produced by the eddy current and realizing the detection of stress of the steel rail. The system disclosed by the invention adopts an electromagnetic induction way to measure the stress of the steel rail, and the problems that precision and service life of a contact type stress sensor are affected by vibration of the steel rail can be solved in a non-contact way.

The invention discloses a steel plate oddment monitoring method which is applied in a steel plate oddment monitoring system. The method includes that a server receives layout results from a layout system and determines whether the layout results contain oddment information; if so, a cutting site management terminal acquires the layout results from the server according to production plan, an operator prepares material according to plate blank information, a numerical-control cutting platform cuts the prepared plate blanks according to a numerical-control program and layout images, the cutting site management terminal sends oddment information to a RFID reader after cutting of the numerical-control cutting platform is completed, the RFID reader writes the oddment information into a RFID and embeds the RFID into the oddment, and the operator stores the oddment with the embedded RFID into a plate blank bin and sends storing position of the oddment to the server through a management terminal of the plate blank bin. By the aid of the method, steel plate oddment monitoring and management can be realized effectively, relevant enterprises can utilize raw material effectively, material utilization can be improved, and production cost can be reduced.

The invention relates to a detecting system for sealing property of an aluminum foil blister package. The detecting system comprises a vacuum air path system, an optical measuring system and a data collecting processing system, wherein the vacuum air path system comprises a sealing cavity, a vacuum pump, a pressure-relieving valve, a reversing valve and a pressure sensor; the reversing valve is respectively connected with the sealing cavity, the vacuum pump and the pressure-relieving valve through the pipelines; the pressure sensor is also mounted on a pipeline which is directly communicated with the sealing cavity; the bottom in the sealing cavity is used for loading a to-be-detected aluminum plastic bubble cap; the top surface of the sealing cavity is provided with a window sealed with a transparent material; the optical measuring system comprises a light source, a light source controller, an image sensor and a bracket; the light source and the image sensor are mounted on the same side of the sealing cavity through the bracket; included angles between the irradiating direction of the light source as well as the shooting direction of the image sensor and the inner bottom of the sealing cavity are 45-60 degrees; the light source controller is connected with the light source and is used for controlling the luminance of the light source; a data processing system comprises a computer connected with the image sensor.

The invention discloses an antenna area array thermal deformation non-contact measurement system under a thermal vacuum environment. The system comprises a control terminal internally equipped with thermal deformation measurement control and analysis software, a measuring camera and a protection device for the measuring camera under the thermal vacuum environment. The control terminal is arrangedoutside a vacuum tank, and is connected with the measuring camera arranged in the vacuum tank through a motion control and data collection cable; the measuring camera is arranged in the protection device for the measuring camera under the thermal vacuum environment through a fixture; and the vacuum tank is also equipped with a measuring camera two-dimensional motion device, an antenna area array and a zero-expansion microcrystalline glass reference scale. The system can realize thermal deformation measurement of the antenna area array under the thermal vacuum environment by enabling one measuring camera to finish two-dimensional motion in the thermal vacuum environment and carry out image acquisition on an object to be measured at different positions, and carrying out calculation through the corresponding measurement control and analysis software; and the system has the advantages of non-contact, high precision and high degree of automation.

The present invention relates to an apparatus and method for detecting defect of carbon fiber composite based on an electromagnetic chromatography imaging technique in a mode of single-coil-excitationmulti-coil induction. The apparatus includes a module for generating and forming excitation signals, a module for amplifying current and driving excitation coil, a module for exciting and detecting coils, a module for sampling back, recuperating and amplifying induction signals, a signal collection board card and a PC machine. The method includes steps feeding an alternation drive current to theexcitation coil so as to induct an alternation excitation magnetic field, the defect of the carbon fiber composite board will change the distribution of the excitation magnetic field; according to electromagnetic induction principle, obtaining an amplitude and a phase of a signal, regenerating an image for reflecting the size and position of the defect in the carbon fiber composite board by an algorithm of regenerating an image through shadow cast, so as to implement a non-contact, non-interposition and rapid nondestructive detection to the carbon fiber composite.

The invention belongs to the field of engine detection, and relates to a light projection measurement device and method which can realize real-time dynamic measurement for the axial clearance of movable and stationary blades of an engine through applying an optical path system designed in allusion o actual conditions and a subsequent signal processing module. The technical scheme of the inventionis that the light projection measurement device for the axial clearance of the movable and stationary blades of the engine structurally comprises an optical path system module, an area array / linear array CCD signal acquisition module and a computer processing module, wherein the optical path system module a strong parallel white light source with the divergence angle being less than 1 degree, andthe light intensity of the strong parallel white light source is uniformly distributed; the area array / linear array CCD signal acquisition module comprises an area array or linear array CCD sensor, aCCD signal driving module and a signal acquisition module, and enables a light spot to be projected to a linear array or area array CCD by being matched with a lens with appropriate parameters; and the computer processing module is used for controlling acquisition for axial clearance signals of the movable and stationary blades, processing the acquired signals to obtain a clearance measurement value and performing analysis, storage and display on the data according to requirements. The light projection measurement device and method are mainly applied to occasions of engine detection.

The invention discloses a lie detection method based on sight tracking, which mainly utilizes a face detection technology and a pupil center positioning algorithm to track pupils of human eyes and eyemovement tracks of the pupils, and predicts whether the pupils lie or not according to the eye movement tracks of videos. The method comprises the following steps: firstly, carrying out face region detection on each frame of image in a video, and storing facial features to obtain center position parameters of two eyes; carrying out pupil center positioning and coordinate acquisition, and storingthe pupil position of each frame; then, calculating parameters of an eye movement track by using pupil position data of each frame, and obtaining feature vectors of the video by calculating the amplitude and angle parameters of pupil displacement; preprocessing the feature vector data set, and performing noise reduction and normalization processing; inputting the processed data into an SVM (Support Vector Machine), and training a binary classification prediction model capable of judging whether a user lies or not; and finally, obtaining a prediction result by loading the trained prediction model.

The invention discloses a material near-surface macro-micro defect integrated ultrasonic detection method based on a spatial modulation laser ultrasonic sound spectrum. Firstly, a double-spacing optical mask plate is used for enabling a high-energy pulse laser beam irradiated to the surface of a measured material to form two kinds of periodically distributed grid-shaped laser spots; two columns ofultrasonic surface waves with different frequencies are excited at the same time in a measured area. Linear or non-linear interaction occurs in a measured area; the laser ultrasonic detection unit receives a surface wave signal on one side of the surface; fourier transform is carried out on the rear half section of the received surface wave signal pulse sequence to obtain a spatial modulation laser ultrasonic frequency spectrum curve, and finally integrated detection of linear ultrasonic and nonlinear ultrasonic is achieved according to the two fundamental frequencies in the frequency spectrum and the components of the nonlinear frequency mixing components of the fundamental frequencies.

The invention discloses a scanning type radioactive hole diameter measurement device and method. A gamma radiation source is adopted, a plurality of collimation holes are formed at the gamma radiation source, and scattering gamma counts are recorded by a plurality of corresponding close and far gamma detectors; according to the fact that the gamma count is a result of weighted average of mud density and stratum density, and on the basis that a contribution rate of mud to the gamma counts of the detectors is related to the mud gaps, a nonlinear relation is formed therebetween; and a quantitative evaluation method of a hole diameter is formed by adoption of the gamma counts on all directions at different depths along a borehole recorded by the gamma detectors. As the combination of multiple groups of collimation holes-detectors is arranged, the statistical errors of the gamma counts are reduced, and the accuracy of the hole diameter data on the directions is improved; and the device performs measurements underground in a rotary scanning manner and records the hole diameter data in all directions at different depths underground for imaging and displaying the hole diameter.

The invention discloses a ceramic material laser processing device and method. According to the ceramic material laser processing device and method, for laser perforating of a ceramic material, the problems that in the prior art, the depth-diameter ratio of a machined through hole is small, the taper is large, the hole wall is prone to breakage are solved, high-quality perforating of the ceramic material is realized, the requirement for micro processing on a ceramic packaging substrate of the ultrahigh-frequency communication electronic industry is met, the processing dip angle of laser perforating is synchronously and orderly regulated and controlled through sequential operation of clockwise rotation, anticlockwise rotation and adjustment of a ceramic chip, and then the hole wall taper iseffectively reduced. Meanwhile, the double-sided processing mode effectively disperses heat accumulation, reduces the temperature gradient, reduces the damage of heat influence on the ceramic material, and reduces the edge breakage of the hole wall. Particularly, under the mode of performing focusing by adopting a cone lens, a bessel space distribution light beam is obtained, namely, a transverselight spot (the transverse direction is the perpendicular light beam propagation direction) after the laser beam is focused is reduced, a longitudinal light spot (the longitudinal direction is the parallel light beam propagation direction) after the laser beam is focused is stretched, the laser utilization rate is effectively improved, and the heat influence is reduced.

The invention provides a high-stability dynamic detecting system for converter steelmaking carbon content. The high-stability dynamic detecting system comprises a telescoping optical system, a spectrograph and a terminal control device, wherein the telescoping optical system is used for collecting flame image information of a steel furnace mouth in real time, the spectrograph is connected to the telescoping optical system through an optical fiber and used for flame spectral analysis, and the terminal control device is connected with the spectrograph through a data line and used for detecting carbon content. The terminal control device comprises an operation unit and a control unit, wherein the operation unit and the control unit are used for detecting carbon content. The operation unit is provided with a data interface and connected with the spectrograph through the data interface. The control unit is a microprocessor and comprises a power module, a storage module and a central processing module, wherein the power module is used for providing voltage and provided with an energy storage unit for eliminating electromagnetic interference, and wiring circuits between the power module and the storage module as well as between the power module and the central processing module are both connected with filters for eliminating interference on wires. The high-stability dynamic detecting system provided by the invention is high in antijamming capability.