224results about How to "Realize synchronized measurements" patented technology

The invention discloses a full-automatic laser tunnel section convergence instrument and a measuring method. The full-automatic laser tunnel section convergence instrument comprises a laser ranging system, an acquisition and communication system (2) and a mounting and fixing system (3), wherein the laser ranging system comprises a plurality of laser ranging modules (11); the acquisition and communication system (2) comprises a central processing module, a data acquisition module, a data storage module, a data communication module, a power management module, a power interface (26) and a data interface (27); the mounting and fixing system (3) comprises a pedestal (31), a core plate (32), a frame plate (33), a cover plate (34) and an inclinometer (35); and the laser ranging modules (11) are fixed on the core plate (32), each laser ranging module (11) is connected with the data acquisition module through a data line, and the laser ranging modules (11) and the core plate (32) are arranged within the frame plate (33). The full-automatic laser tunnel section convergence instrument can be mounted on a tunnel vault or side wall conveniently, and achieve full-automatic tunnel section multi-point convergence monitoring and data transmission.

The invention provides a multi-meteorological-parameter synchronous measuring method based on spectrum characteristic signals and a laser radar. Various kinds of scattering spectrum characteristic information is extracted from a detected laser echo signal spectrum, further, inversion is carried out on the atmospheric wind field through the frequency deflection in the detection spectrum signals, the detection on the gas density is realized through detecting the Rayleigh scattering spectrum energy, the detection on the atmospheric temperature can be realized through detecting the full width at half maximum of the Brillouin scattering spectrum or the Brillouin frequency shift, and the detection on the aerosol concentration, optical thickness and the like is realized through detecting the Miescattering spectrum energy, so the defect of the single function of the traditional time domain laser radar is solved, and the goals of multi-parameter synchronous measurement and operation cost reduction are reached.

The invention discloses underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment which comprises a constant current multipath transmitter, a multichannel intelligent receiver, a multipath electrode automatic translator, an industrial personal computer, an observation electrode array and a bucking electrode. Electrodes in the observation electrode array are chosen to serve as a power supply electrode and an observation electrode respectively. The industrial personal computer controls the constant current multipath transmitter to transmit currents of the same nature to the bucking electrode and the power supply electrode so as to enable currents of the power supply electrode to almost point to the front of a tunneling face under the action of the bucking electrode. Scanning data collection is conducted by utilizing the observation electrode, and the collected data back feed to the industrial personal computer through the multichannel intelligent receiver. The industrial personal computer controls the multipath electrode automatic translator to change the power supply electrode. Multipath power supply and multipath collection are achieved by the underground construction water burst source advance geology forecast three-dimensional focus induced polarization equipment, directional detection of a tunnel face is achieved, directivity of the currents is good, and the problem of side interference nearby a measuring line is effectively solved so that background interference data are small, forecast accuracy is improved, and detection range is increased.

The invention discloses a synchronization measurement device for a wall-adherent jet speed field and a concentration field, consisting of a coal-powder boiler modularized device, an oxygen sensitive coating wall surface, a high speed CCD camera, a PIV camera, a high intensity excitation light source, a pulse laser sheet light source, an uniform mixing chamber, a synchronization controller and a computer. The PIV camera is utilized to shoot the flowing track of PIV particles in a main air flow in the wall-adherence jet, the high speed CCD camera is utilized to shoot the color rendering rule of the oxygen sensitive coating wall surface along the change of the oxygen concentration in the jet, and the synchronization measurement of the speed field and the concentration field in the process of mutual interaction of the wall-adherence jet and the main flow is realized through the controller regulating and controlling the interval frame working mode between the PIV camera and the high speed CCD camera. . The invention realizes the synchronization measurement in the process of air-air mutual interaction, which not only obtains the turbulence flowing characteristics of the wall adherence jet, but also obtains component transportation characteristics of the specific component in the jet air. The invention benefits the comprehensive understanding the convection movement of the jet air and the diffusion process, and provides reference to the optimization design and the operation parameter of the nozzle.

The invention discloses a method for multi-section blocking of overburden failure section and synchronous leakage measuring. The operation step includes boring upcoming holes with 30-50m depth in top-board rock stratum in a coal rock lane, installing a detection system and sending the detection system to the initial position of the bored holes, enclosing the bored holes with a plugging system, sending a water source with specific pressure to a water inlet pipe through a water flooding operating bench, controlling the gas pressure in a plugging capsule to be slightly higher than the gas pressure and the water pressure in a water returning pipe in a blocking chamber, correcting the water pressure in the water returning pipe, measuring the running water vector parameters, starting an electronic recorder and providing corresponding water source pressure after the water pressure in the water returning pipe is adjusted to a reasonable water pressure scope, recording water flow data and other related data after stabilizing, processing and analyzing collected data to form corresponding running water vector graph of the measuring section, and repeating the above steps to sequentially measure the bored holes. Multi-section and synchronous measuring top-board water guiding cracking section at any angle can be realized.

The invention provides an improved system and a method for transformer and reactor noise source positioning and vibration detection. The system comprises a microphone support, a noise sensor array, a vibration sensor, a data acquisition system, a microphone array imaging module, a noise vibration testing module, and auxiliary equipment, the noise sensor array is formed by a plurality of microphones fixedly arranged on a microphone array support, the microphones are respectively arranged on a quartered square-shaped support and support rods led out from the left, right, and upper parts of the quartered square-shaped support, and the center of the quartered square-shaped array is provided with a camera for shooting photos of a detected object. The method includes steps: system building and connection; test system self-check; array position selection; array calibration; sound source positioning imaging; vibration measurement; and array dismounting. According to the system and the method, the quartered square-shaped microphone array is employed so that the precision of sound source positioning of the system for low-frequency-band noise signals is improved, vibration monitoring is additionally provided so that synchronous measurement of vibration signals and the noise signals is realized, and the positioning precision of the low-frequency-band noise sources of the transformer and the reactor is improved.

The invention discloses a segmental observation system for the growth height of a top-board water guiding fissure zone. The segmental observation system comprises a detection system, a plugging system and a supply determination system, the detection system comprises a test probe, the test probe is formed by connecting detection units successively, the adjacent detection units are detachably connected via a slot joint, each detection unit comprises a water inlet pipe, a water return pipe, a pressure regulator valve and an electronic flow meter, the two ends of the water inlet pipe and the two ends of the water return pipe of the detection unit in the middle/tail portion are clamped on the slot joints respectively, one end of the water inlet pipe and one end of the water return pipe of the detection unit in the front portion is connected to the slot joint, the other end of the water inlet pipe and the end of the water return pipe of the detection unit in the front portion is connected to a U-shaped pipeline, and the water current pressure in each detection unit is kept equivalent. The test probe is provided with multiple units, the pressure regulator value is used to regular the pressure, it is ensured that the pressure of each detection unit is kept equivalent, and bores can be measured synchronously due to existence of the detection units.

The invention relates to a method for detecting the position of an underground conductor and the grid structure of a transformer station grounding network under the normal running condition of a transformer station. The method comprises the following steps of: 1, connecting a sine wave current source between two lower guide bodies at appropriate positions by using existing lower guide body wires on the ground surface; 2, constructing a right-angle coordinate system in a horizontal direction by taking a current injection point as an original point; 3, measuring ground surface magnetic induction strengths along an x direction and a y direction respectively, and recording position coordinates where peak values appear simultaneously; and 4, reversely calculating a grounding network structure according to a measured result and the peak value coordinate, and drawing a structure diagram of the grounding network to judge the positioned of a buried conductor and the grid structure of the grounding network. The detection system consists of a detection signal generating part and a signal detection part. According to the method, the underground conductor, position and structure of the transformer station grounding network can be detected rapidly and accurately under the normal running condition of a transformer station, and the problems of loss and defect of a drawing of the transformer station grounding network are solved.

The invention discloses a longitudinal multi-optical-path multi-waveband measuring device for optical transmittance of solid propellant smog, and is used for solving the problem of a smoke box method that the measure precision of the smog optical transmittance is poor. The longitudinal multi-optical-path multi-waveband measuring device comprises a light source unit, a beam splitting unit, a medium unit, a signal receiving unit, a signal processing unit and a measure and control software unit. Incidence light is split by the beam splitting unit into reference light and measure light, the measure light perpendicularly enters a smog area from a light incidence window on the upper part of a combustion chamber, two beams of light are respectively received by a sensor, and an output signal can be processed to acquire the smog optical transmittance. By designing the longitudinal optical path, the unfavorable influence of the sedimentation effect of the smog on the measure precision can be eliminated. By designing three optical paths, the synchronous measurement of infrared, visible light and laser transmittance of the smog can be realized. The longitudinal multi-optical-path multi-waveband measuring device is suitable for measuring the optical transmittance of the smog which is produced by materials such as a solid propellant, propellant powder and a cladding layer under a given condition and has an important significance on the research of low-characteristic-signal propellants.

A common source double-frequency excitation type multifunctional micro-magnetic signal synchronous detection method is disclosed and belongs to the technical field of micro-magnetic nondestructive testing. Via use of the common source double-frequency excitation type multifunctional micro-magnetic signal synchronous detection method, five types of typical micro-magnetic detection parameters can be obtained synchronously, and detecting efficiency can be greatly improved. A standard micro-magnetic probe comprises an excitation magnetic circuit consisting of a magnetic core and an excitation wire coil, an induction wire coil wounded around the magnetic core, a Hall element used for detecting surface tangential magnetic field change of a ferromagnetic component being detected, and a Barkhausen noise detection wire coil. Sine wave superposed signals having a low frequency less than 100 Hz and a high frequency greater than 1k Hz that matche with an amplitude ration are used as excitation signals, and the excitation signals are sent into the excitation wire coil of the standard micro-magnetic probe so as to magnetize the ferromagnetic component being detected. The induction wire coil, the Hall element and the Barkhausen noise detection wire coil are respectively used for synchronously picking characteristic signals such as magnetic induction intensity time-varying signals, tangential magnetic field detection signals and Barkhausen noise detection signals; magnetic hysteresis loops, tangential magnetic field intensity time-varying signals, Barkhausen noise, eddy current impedance and incremental magnetic permeability can be quickly detected.

The invention discloses a synchronous measurement device for perimeters and maximum center axis offset of cigars. The synchronous measurement device comprises a U-shaped support. Two opposite cigar clamping systems are arranged on the U-shaped support and connected with a power system. A measuring system is arranged on the bottom surface of the U-shaped support, and the power system and the measuring system are both connected with a control system. Meanwhile, the invention discloses a detection method utilizing the synchronous measurement device. With the synchronous measurement device and the detection method, detection accuracy and check efficiency can be effectively improved, nondestructive detection can be achieved, and cigar image can be greatly promoted.

A vibration speed transducer of 6-D type is featured as connecting vibration ball with six magnetic rods by ball-joint, forming one dimensional magnetic type of linear vibration speed transducing branch by magnetic steel rod and electromagnetic inductor through spring, connecting another end of the inductor to fixture frame fixed on erection seat. It can synchronously measure decoupling of displacement for object linear and angle vibration as well as 6-D parameter of space vibration for rigid body.

Provided is a needle-plate electrode medium space charge and partial-discharge ultrahigh-frequency signal synchronous measurement device in the field of electric variable measuring. An inner insulation piece is arranged in the middle of an outer insulation piece in a sleeved mode. The outer side of the inner insulation piece is provided with a tooth structure. The top end of a needle electrode is provided with a metal voltage-sharing ball. The bottom end of the needle electrode penetrates through middle through holes of the inner insulation piece and the outer insulation piece respectively. A height adjusting gear is matched with the tooth structure on the outer insulation piece. By rotating the height adjusting gear, the relative positions of the inner insulation piece and the outer insulation piece are adjusted, the proper distance between the needle electrode and a lower electrode is selected, a voltage pulse is applied at the top end of the needle electrode, vibration of a liquid oil sample to be detected is generated, mechanical wave signals are sent out, the mechanical wave signals are received by a piezoelectric film and are converted into voltage signals, and accordingly space charge distribution in the liquid oil sample to be detected is reflected. Space charge and partial-discharge ultrahigh-frequency signal synchronous measurement under needle-plate electrodes of liquid or solid media is achieved.

The invention provides a method for detecting residual austenite in a steel plate on line. An X-ray diffraction method is adopted and the method comprises the following steps of: firstly, placing an X-ray tube, an X-ray probe and an angular instrument at a position close to a tension wheel in a production line where a steel band passes; arranging the X-ray tube and the X-ray probe on the same angular instrument, and keeping the focal point of the X-ray tube, the surface of the steel band and a receiving gap on the same diffraction focal circle so that the surface of the steel band and the central line of the angular instrument are coplanar, wherein the X-ray tube and the X-ray probe which are relative to the surface of the steel band rotate at the same angular speed, and the surface of the steel band is always tangent with the diffraction focal circle; and recording the diffraction intensity of an X-ray by using a computer and calculating the quantity of the residual austenite and the carbon content in the residual austenite. By the method, the quantity of the residual austenite and the carbon content in the residual austenite in high-intensity steel plates such as TRIP, Q&P and the line can be detected in real time on line; and guarantee can be provided for correctly regulating and controlling the quantity of the residual austenite and the carbon content in the residual austenite in the high-intensity steel plates.

The invention discloses a floor mining damage zone multi-section blocking synchronous leakage detection method, which comprises the following steps of: forming a downward drill hole in a roof rock layer from a coal rock roadway, and cleaning the drill hole; installing a detection system, wherein a test probe of the detection system is formed by sequentially connecting a plurality of detection units, and the adjacent detection units are detachably connected through clamp groove joints; conveying the detection system to the initial position of the drill hole by using a drill pipe and a drilling machine in a supply measuring system; using a blocking system to seal the drill hole; using a water injection operation platform to convey a water source at the specific pressure to a water inlet pipe; processing and analyzing the collected data, then, forming a corresponding flow water vector diagram of the test section, and the like. The method provided by the invention has the advantages that the multi-section and synchronous measurement of a floor mining damage zone can be realized; the test section number in one test can be properly increased according to the length of the drill hole; the workload is exponentially reduced; and the measurement precision is improved.

The invention discloses a natural gas hydrate rock mechanical triaxial tester. The tester comprises a closed pressure chamber composed of a cylinder body, a pedestal and an upper cover; the pedestal is provided with at least one oil inlet, at least one gas inlet and at least two sonic line connection holes; the upper part of the cylinder body is provided with at least one gas inlet; the upper cover is provided with a piston; the piston is connected with a mobile crossbeam on the outside of the closed pressure chamber; a lower sample pressing seat and an upper sample pressing seat which correspond with each other are arranged in the cavity of the closed pressure chamber; the upper sample pressing seat corresponds with the position of the piston, and the lower sample pressing seat is fixed on the pedestal; and sound probes are arranged in the upper sample pressing seat and the lower sample pressing seat.

The invention provides a quasi-three-dimensional automatic measurement system for wind tunnels of an atmospheric boundary layer, relating to a quasi-three-dimensional automatic measurement system. The quasi-three-dimensional automatic measurement system is used for solving the problems that the continuous multipoint measurement and automatic motion of a velocity rod can not be realized because the existing large-sized wind tunnel mobile control equipment is relatively few in category and complicated in structure, automatic equipment is mostly imported from abroad, high in cost and inconvenient in popularization and application, and own equipment is mostly equipment of manual control. The quasi-three-dimensional automatic measurement system comprises a forward-backward moving device and an upward-downward moving device; the upward-downward moving device is arranged in the forward-backward moving device; a first forward-backward moving mechanism and a second forward-backward moving mechanism are arranged at the two sides of a forward-backward moving bracket in parallel; an upward-downward moving bracket is arranged in the forward-backward moving bracket; and a first upward-downward moving mechanism and a second upward-downward moving mechanism are arranged at the two sides of the upward-downward moving bracket in parallel. Support frame length adjustment members and measuring rod support mechanism length adjustment members are adjustable within a certain range of length and can carry out leveling to a certain degree. The quasi-three-dimensional automatic measurement system is applicable to the automatic measurement of the wind tunnels.

The invention discloses a quasi-distributed sea water temperature salinity sensor, a measuring device and a method thereof. The sea water temperature salinity sensor is an optical fiber. A number of sensing areas and non-sensing areas are arranged on the optical fiber. Each sensing area comprises a weak grating combination of LPG and FBG. LPG is sensitive to salinity and temperature, and produces power loss with the amplitude related to salinity and temperature for backscattered light. FBG is only sensitive to temperature, and produces power enhancement with the amplitude related to temperature for backscattered light. Single-wavelength pulse laser is input into the optical fiber. A backscattered light signal returned by the optical fiber is detected. The backscattered light signal is demodulated to acquire the sea water temperature and salinity detected by each sensing area. The sea water temperature value and the salinity value of multiple points are measured at the same time. The demodulation step is simple. According to the invention, LPG and FBG are optimized by writing parameters; the loss is low; and cascade long-distance quasi-distributed sea water temperature salinity detection is realized.

The invention relates to a velocity field and density field synchronous measurement system and method. The system comprises a visual test pipeline, a laser emission system, a background image target plate, a first CCD camera and a second CCD camera. The method comprises the following steps that fluorescent tracer particles are added into a fluid to be measured, a laser device irradiates laser to the fluid to be measured, and the first CCD camera shoots images of the fluorescent tracer particles at different moments to obtain distribution of a velocity field; and the second CCD camera synchronously shoots a to-be-measured fluid image with the background image target plate as the background when laser irradiates the to-be-measured fluid to obtain distribution of the density field. Synchronous measurement of the velocity field and the density field is achieved.

The invention discloses a device for measuring inner and outer diameters of a pipe fitting, and the device comprises a test platform, an outer diameter measuring unit and an inner diameter measuring unit disposed on the test platform, and a test control combiner. The measuring device adopts the image measuring technology to realize the measurement of the outer diameter of the pipe fitting and thelaser ranging technology to measure the inner diameter of the pipe fitting. Both test methods are non-contact measuring methods to ensure accurate and effective measurement results. The device is fully automated in test process, can not only realize simultaneous measurement of the inner and outer diameters of the pipe fitting, but also achieve independent testing of the inner or outer diameter ofthe pipe fitting, and greatly improves the test and detecting efficiency of the pipe fitting.

The invention relates to a temperature and deformation synchronous measurement method and device. The method comprises the steps of obtaining an initial image of the surface of a measured object whenthe measured object is not heated, a reference image of the surface of the measured object in a heating process, and the reference point temperature of the surface of the measured object; obtaining atemperature field of the surface of the measured object according to the light intensity of the initial image, the reference point temperature and the light intensity of the reference image; obtaininga deformation field of the surface of the measured object according to the initial image and the reference image, wherein the reference image and the initial image are monochrome images shot by a monochrome camera, and the reference point temperature is the single-point temperature of the surface of the measured object when the reference image is shot. The full-field temperature can be measured only through the monochromatic camera, the defect that the full-field temperature cannot be measured through the monochromatic camera is overcome, synchronous measurement of the temperature and deformation in a high-temperature environment is realized, the measurement precision and efficiency are remarkably improved, and the application and development of the monochromatic camera in the field of synchronous measurement of the temperature and deformation are greatly promoted.

The invention discloses a high-speed camera shooting and PIV synchronous measurement system suitable for a moving boundary flow field, and belongs to the technical field of fluid mechanics experiments. The high-speed camera shooting and PIV synchronous measurement system suitable for the moving boundary flow field comprises a computer, a driving controller, a driving device, a water tunnel test section, a synchronous measuring device, a PIV camera, a laser generator and a high-speed camera. Through the perspective effect of a one-way transparent mirror, laser particle image velocimetry is carried out on a measured water wing flow field by the PIV camera, and through the reflection effect of the one-way transparent mirror, full flow field shooting is carried out on the measured water wing flow field by the high-speed camera so as to realize high-speed camera shooting and PIV synchronous measurement. By keeping a lens and a PIV shooting port of the PIV camera on a same shaft system and keeping a lens and a high-speed camera shooting port of the high-speed camera on a same shaft system, the accuracy of the synchronous measurement is ensured. The high-speed camera shooting and PIV synchronous measurement system suitable for the moving boundary flow field can realize the synchronous measurement of the moving boundary flowing-around flow field high-speed camera shooting and the laserparticle image velocimetry, the measurement efficiency is further improved, and the experimental data processing precision can be improved through the synchronous measurement.