91results about How to "Non-contact" patented technology

The invention relates to a method for evaluating the construction quality of a tunnel, and discloses a method for evaluating the construction quality of tunnel drilling and blasting based on three-dimensional laser scanning. The method comprises the following steps of: acquiring data by adopting a tunnel data acquisition module at first, and then processing the acquired data by adopting a tunnel data pre-processing module, building a tunnel three-dimensional model building module according to the processed result, performing post-processing by adopting a tunnel three-dimensional model post-processing module, and finally, evaluating the result by adopting a tunnel drilling and blasting quality evaluation module. The method discloses by the invention has the advantages of being wide in measurement range, strong in applicability, high in automation degree, and good in reliability.

The invention relates to a digital holographic three-dimensional appearance detecting device based on multiple wavelengths. The device carries out surface appearance measurement on the surface of a three-dimensional object by adopting the multiple wavelengths through a digital holographic method. In an optical path structure, the object to be measured is illuminated by planar optical waves, reflected object light is collected, and the included angle between reference light and the object light is controlled through a light beam deflector to achieve off-axis digital holography. In order to enlarge the measurement range while the observation resolution ratio is ensured, the object to be measured can be measured through light beams with the different wavelengths, obtained holographic spectrograms are processed in a subtractive iteration mode, and then three-dimensional appearance information of the object which is to be measured and free of phase position wrapping is obtained. Due to an integrated optical platform, all the optical elements are compact in layout structure, flexible to use and stable, and the detecting device can be used for observing three-dimensional appearances of optical elements large in height and high in accuracy and roughness and mechanical assemblies including mechanical rotors and the like on line.

The invention discloses a finger vein recognizing system which belongs to the technical field of biometric identification. The invention further discloses equipment which comprises a finger vein image collecting device, an image processing device and an image recognizing and storing device. The image collecting device is connected with the image processing device through a USB interface, and the image processing device is connected with the mage recognizing and storing device through the USB interface. The finger vein recognizing system comprises two modes: an authentication mode and a recognition mode, wherein, the authentication mode is used for verifying whether a person to be verified is a designated person or not, that is, a user first selects a corresponding user number when the system verification is performed; after finger vein images of the person to be verified are collected, a comparison is made between the finger vein images and the template which is stored in a database and corresponds to the user number, so that whether the user is valid or not can be determined; the recognition mode is used for verifying which registered person the person to be verified is, that is, a comparison is made between finger vein image characteristics of the user and the template of the user in the database; and then a template number with the greatest similarity is found, so as to determine the identity of the person to be verified.

The invention discloses a cylinder type speed-changing linear permanent magnet generator used for wave power generation. The cylinder type speed-changing linear permanent magnet generator comprises a high speed rotor, a low speed rotor and a motor stator, wherein the high speed rotor, the low speed rotor and the motor stator are of a cylinder structure and arranged from outside to inside in a sleeving mode. A first air gap is formed between the high speed rotor and the low speed rotor. A second air gap is formed between the low speed rotor and the motor stator. The high speed rotor comprises a high speed rotor iron core. The inner surface of the high speed rotor iron core is provided with high speed permanent magnet pole pieces in a surface-adhering or embedding mode. The low speed rotor comprises magnetizers and non-magnetizers, wherein the magnetizers and the non-magnetizers are arranged at intervals in the axial direction in a staggered mode. The motor stator comprises a stator iron core. A stator iron core gear groove of the outer surface of the stator iron core is provided with stator coils in an embedded mode. The outer surfaces of the stator coils are provided with stator permanent magnet pole pieces in a surface-adhering mode. By means of cylinder type speed-changing linear permanent magnet generator, additional large-sized speeders are not needed to arrange in a whole wave power generation system, the volume is small, and the power capturing and power generating efficiency is high.

The invention discloses a method for measuring micro impulse by Doppler galvanometer sine-modulated multi-beam laser heterodyne second harmonic, relates to a method for measuring micro impulse and aims to solve the problems of low acquired laser difference frequency signal quality and low signal processing computing speed in the micro impulse measurement of conventional laser heterodyne methods. The method comprises the following steps of: exciting a working medium target to generate plasma jet to rotate a beam of a standard beam; starting a driving power supply of an H0 solid laser and a galvanometer, and causing the galvanometer to perform simple harmonic motion and modulate optical frequency incident to the front surface of the galvanometer at different moments under the action of the driving power supply; and continuously acquiring signals transmitted by an optoelectronic detector in the pendulum process of a torsional pendulum system, and processing all the continuously acquired signals to obtain the micro impulse to which the beam of the standard beam is subjected by using a signal processing system. The method has the prominent advantages of high acquired laser difference frequency signal quality and high signal processing computing speed.

The invention discloses a method and a device for stably forming an all-position welding pool. In the method, a eudipleural external high-frequency alternating magnetic field is designed; the magnetic field is added on a welding gun so that liquid iron in the welding pool can generate an eddy current, and the eddy current and the external high-frequency alternating magnetic field interact with each other to generate an electromagnetic force; the generated electromagnetic force is used for counteracting partial or all gravity which influences the stable forming of the welding pool, so that thestable forming of the all-position welding pool can be kept. The device is applicable to the method and mainly comprises a middle winding and a middle iron core, a right winding and a right iron core, a left winding and a left iron core, and a beam for fixing the windings and the iron cores; the middle iron core has a hollow structure and is arranged at the middle of the beam; the welding gun canpass through the hollow of the middle iron core; the left iron core and the right iron core have solid structures and arranged on the beam symmetrically; and the device can be detachably and adjustably fixed on the welding gun by using the beam.

The invention provides a bridge crane hoisting safety anti-collision system and method based on dynamic binocular vision, and the method is based on a binocular vision measurement system and comprisesthe following steps: 1, constructing three-dimensional point cloud information of a target; 2, reconstructing a static obstacle in a crane working scene to obtain a reference sample set; 3, collecting image information of the crane in the load transferring process, comparing the image information with the reference sample obtained in the step 2, and respectively obtaining three-dimensional coordinates of the load and the dynamic obstacle; 4, predicting whether the load collides with the dynamic obstacle or the static obstacle or not according to the three-dimensional coordinates of the load and the dynamic obstacle obtained in the step 3; and 5, controlling the operation of the crane according to the judgment result. According to the method, binocular vision is applied to bridge crane hoisting safety collision avoidance, non-contact performance and high robustness are achieved, the complexity degree of an anti-collision system can be reduced to a large extent, and the working reliability of the system is improved.

The invention discloses a free-curved-surface-type detecting system, which comprises a laser generator, a collimating lens, a first computing holographic element, a second computing holographic element, a projecting lens, an illuminating system, a spatial filter and a CCD (Charge-Coupled Device) image sensor, wherein the first computing holographic element is used for carrying out first-time diffraction for parallel light; the second computing holographic element is used for diffracting first-level light which is diffracted by the first computing holographic element; the spatial filter is used for filtering interference stray light; and the CCD image sensor is used for obtaining an interference image. In the free-curved-surface-type detecting system disclosed by the invention, a free-curved-surface-type error is obtained by analyzing the interference image (concretely an interference fringe) on the basis of a Fizeau interference principle, so that the non-contact type detection for a free-curved-surface type can be carried out, and the detecting precision of the free-curved-surface type is improved.

An intelligent vehicle management module based on electronic label and ID code of vehicle (VIN) is composed of a VIN label, an electronic label, and a supporting frame. After it is fixed to the body of vehicles, the information about VIN code, engine number, vehicle model, delivering date, license number, insurance certificate, etc can be written in it.

The invention relates to a method for measuring a micro impulse, more particularly to for a second harmonic multi-beam laser heterodyne measurement method for a micro impulse based on doppler oscillating mirror sinusoidal modulation. The invention aims at solving a problem of poor qualities of collected laser difference frequency signals and slow operation speeds of signal processing during microimpulse measurement in the current laser heterodyne method. According to the method, a pulsed laser emits a pulse laser excitation working medium target that generates plasma injection, and the plasma injection enables a crossbeam of a standard beam to make rotations; driving powers of an H0 solid state laser and an oscillating mirror are started; the oscillating mirror, which is driven by the driving power, makes simple harmonic motions and carries out modulation on optical frequencies that are incident to the front surface of the oscillating mirror at different times; and a signal processing system collects continuously signals emitted by a photoelectric detector during a swing process of a torsion pendulum system and also carries out processing on all continuously obtained signals, so that a micro impulse I exerted on the crossbeam of the standard beam is obtained. According to the invention, the method has advantages of high qualities of collected laser difference frequency signals and a fast operation speed during signal processing.

The invention provides a temperature information monitoring method and system based on an infrared thermogram.The method includes the steps that an infrared thermal image on the preset portion of a moving object is acquired; the environment temperature is acquired; a feature region of the infrared thermal image is extracted; temperature information of the feature region is acquired; a temperature data analysis model is preset according to historical experience data; the environment temperature and the temperature information of the feature region are substituted into the temperature data analysis model to be calculated, and temperature information of the preset region of the moving object is acquired.Automatic temperature detection on the specific portion of the moving object is remotely and online achieved, and the temperature information of the moving object is accurately acquired in time; an acquisition mode of the temperature information has the advantages of achieving non-contact performance, non-invasion and timeliness, being high in applicability, automatic in operation, rapid and convenient to use, low in invested cost, high in precision and the like, and great significance is achieved for analysis of animal states.

A method and apparatus suitable for measuring temperature of a surface of a segment of a rail using a sensor underneath a moving or a stationary rail car. The measurement is based on intensities of infrared radiation emitted by the surface. The method uses relationships among emissivity, radiation intensity and surface temperature without assuming an emissivity value for the surface. The apparatus comprises radiation detectors containing sensing elements, a lens systems, and analog to digital conversion board to convert radiation intensities to temperature.

The invention discloses a confidential, cleaning function non-contact holographic keyboard device, including virtual region, control unit, and display device, and virtual region forming a surface and including a number of virtual buttons, and the control unit connecting with the display device, around the virtual region installed with multiple pairs mutual matching launch sensors and receiving sensors, and in each pair launch sensor and receiving sensor, the receiving sensor receives the signal issued by the launch sensor, and the receiving sensor output connecting with the control unit, and the launch sensors of the arbitrary two pairs launch sensors and receiving sensors issues the signals at the junction corresponding to a virtual button of the said virtual region, and one output signal of the control unit respectively drives each launch sensors through a signal amplification driver circuit. Due to the above circuit structure, the invention has advantages of high safe performance, non-contact, clean health, long life, and others.

Embodiments of the invention provide an apparatus and method for measuring a noncontact Hopkinson pressure bar. The apparatus comprises a pressure bar system, an optical-fiber speed measurement system, a speckle interferometryspeckle pattern interference system, a point detector and a data acquisition and processing system. A tested material test sample is arranged between an incidence bar and a transmission bar of the pressure bar system, compressive stress pulses generated by striking the incidence bar by a striking bar after being stressed are transferred in the direction towards the tested material test sample, and the speed of the striking bar is measured by the optical-fiber speed measurement system; and the compressive stress pulses influence the light intensity on the incidence bar and the transmission bar to form speckle pattern intensity information by virtue of the speckle interferometrypattern interference system; and the information detected by the point detector is transmitted to the data acquisition and processing system, so that the information of the tested material such as stress, strain, strain rate and the like can be calculated. By combining an in-plane displacement measurement method and a Hopkinson pressure bar measurement method in the time-domain speckle pattern interferometry, the noncontact and high-accuracy measurement of dynamic properties for small-sized materials can be realized.

Present invention refers to medicine and schardinger dextrin interaction and pharmacy performance Raman spectra analytical procedure.It contains adopts Raman spectrometer or Fourier Raman spectrometer to proceed atlas determination to medicine, classifying and selecting Chinese traditional medicine absorption band or absorption peak in atlas, selecting specifical vibrational band used as featuring reference band, collecting or calculating band wave number, spectral bandwidth, band intensity, band shape coefficient etc parameter, using standard control or working curve qualitative and quantify identifying and analysing medicine clathration state and level in different system or preparation, predicting pharmic dissolve out performance, penetrating quality and medicine dynamics parameter.Said invention has non - contacting, nondestructive, short time, and high detection sensitivity.

The invention discloses an ocean current energy integrated power generation device based on a magnetic flux modulation composite motor, which includes a low-speed rotor, a magnetic-regulation armature, and a high-speed rotor. Among them, the low-speed rotor is composed of guide vanes, low-speed rotor back iron and low-speed rotor permanent magnet; the field-adjusting armature is composed of field-regulating pole pieces and armature winding; the high-speed rotor is composed of high-speed rotor back iron and high-speed rotor permanent magnet. The field regulating armature is arranged between the high speed rotor and the low speed rotor, a first air gap is formed between the low speed rotor and the field regulating armature, and a second air gap is formed between the field regulating armature and the high speed rotor. The invention perfectly integrates the turbine, gear box and generator in the traditional ocean current power generation system, and adopts an integrated structure to realize energy capture and energy conversion. The power generation device has the advantages of compact structure, high conversion efficiency, and overload protection, and has high power density, no contact between input and output, reduced maintenance costs, low noise, and little pollution to the marine environment.

The invention discloses a speed measuring method with particle image which can measure architecture and city space accurately. Its steps are: Build a model configuration of architecture and city space and minimize then into a fixed flow field in proportion. Insufflate natural air (tracer particle) into flow field. Utilizing light-source system to lighted measuring area, positions of tracer particles are recorded by image-taking system. Average velocity and image information of all tracer particles are achieved by CCD camera. Arrange the positions, average velocity and image information of tracer particles in simulation experiment, test variation of city wind influenced by architectures in simulated space environment to get specific wind datagram. The invention measures city space accurately by using the speed measuring method with particle image (PIV), which can meet the production requirement of synthetic basic spatial information.

The invention belongs to the field of soil environment monitoring and evaluation, and particularly relates to a method for evaluating soil heavy metal concentration in a hyperspectral image based on spatial weight constraint and variational self-encoding feature extraction. The invention first establishes a spatial weight constraint for each pixel in the hyperspectral image, realizes the feature data extraction of soil heavy metal concentration modeling by a variational self-encoding method based on the spatial weight constraint, establishes a model between the soil heavy metal concentration and the features of variational self-encoding compression, and finally obtains an estimated value of soil heavy metal concentration at unknown pixels. The method has the characteristics of non-contact,large-scale continuous geographic space, and strong generalization ability to evaluate soil heavy metal concentrations.

The invention discloses a method for testing and comprehensively evaluating invisible damage to a surface of a fruit through infrared images and belongs to a nondestructive testing method for defects on a surface of a fruit. The method comprises steps as follows: an infrared image about the surface of the fruit is shot; the average temperature of all pixel units of a test object, the sum of low-temperature areas of all low-temperature pixel units in the test object, the sum of high-temperature areas of all high-temperature pixel units in the test object and the sum of temperature areas of all the pixel units in the test object are calculated according to the infrared images, and then the proportion of the sum of the low-temperature areas to the sum of the temperature areas is calculated; the proportion is taken as the judgment basis of the damage degree of the surface of the fruit. The method has the characteristics of non-contact, no damage, real time, fastness and accuracy and can be used for nondestructive test or screening and grading for fruits with characteristics of fruit surface damage, defect damage, pathogenic microorganism infection, decay and the like.

The invention discloses a device and a method for measuring thickness of glass through multi-beam laser heterodyne second harmonic based on Doppler oscillating mirror sinusoidal modulation, relates to the device and the method for measuring thickness of glass through multi-beam laser heterodyne second harmonic based on Doppler oscillating mirror sinusoidal modulation, and aims to solve the problems of non-ideal laser difference frequency signal quality and signal processing operation speed of a signal acquired by the conventional multi-beam laser heterodyne detection-based dynamic angle measuring algorithm. The method comprises the following steps of: adjusting positions of a plane mirror and a glass plate of which the thickness is to be measured; starting a laser while simple harmonic vibration is done by an oscillating mirror; and continuously acquiring an electric signal output by photoelectric detector through a signal processing system and processing the acquired signal to acquire the thickness of the glass plate of which the thickness is to be measured. The device and the method have the advantages of high laser difference frequency signal quality and high signal processing operation speed of the acquired signal, and can be widely applied to laser radar, machinery, instruments and meters and electronic product manufacturing industries.