45results about How to "Improve detection performance" patented technology

The invention discloses a karst underground river system detection method, which comprises the following detection steps: S1, firstly, holding a pull rod, obliquely pulling a detection device, enabling a stable bottom plate to be far away from the ground, and enabling a moving wheel of the detection device to drive the whole body to move, and S2, after the whole body moves to a position needing to be detected, loosening the pull rod, placing the stable bottom plate at the position needing to be detected, according to the soil detection device, the stable bottom plate and the four supporting columns are arranged, the detection probe is connected among the four supporting columns through the movable plate, the detection probe is moved to be inserted into the soil, the detection probe is inserted into the soil through the movable plate, and therefore the soil detection device can be used for detecting the soil; the top of the supporting column is provided with a supporting plate and a moving strip for placing a signal receiving and transmitting box, a storage space is provided for detection personnel, detection operation is facilitated, and meanwhile, a pulling rod and moving wheels are arranged, so that the detection device is convenient to move.

The invention discloses an optical radar control method, an optical radar control device and an optical radar, the optical radar comprises a diaphragm, and the optical radar control method comprises the following steps: obtaining a dew point temperature value of the inner side of the diaphragm; acquiring a current temperature value of the diaphragm; according to the dew point temperature value and the current temperature value, the heating power of the heating module is adjusted, so that the temperature value of the diaphragm is larger than the dew point temperature value of the inner side of the diaphragm. According to the design, water mist existing on the inner side of the window piece can be evaporated or water mist can be effectively prevented from being generated on the inner side of the window piece, so that the signal strength of the optical radar and the signal transmission direction of the optical radar are not affected, and the good detection performance of the optical radar is guaranteed.

The invention discloses a low-field nuclear magnetic resonance exploration device and method capable of effectively shortening dead zone time, and relates to the field of electric signal acquisition, and the device comprises an upper computer which is used for communicating with a main control circuit; the main control circuit is used for controlling and collecting the core and comprehensively controlling the work of the device; the power amplification circuit is used for amplifying the power signal input by the main control circuit and then transmitting an alternating current pulse to excite the coil; the beneficial effects of the invention are that the coil employs a transmit-receive integrated differential structure, which inhibits common-mode noise interference and improves the signal-to-noise ratio of detection; the Q-conversion circuit reduces the quality factor of the coil through parallel connection of energy discharge resistors at the two ends of the coil, the purpose of rapidly discharging energy stored in the coil is achieved, and the dead time can be effectively shortened; the high-isolation fast-switching radio frequency switch can effectively reduce the insertion loss and the generated noise, significantly reduce the switching time, further shorten the dead zone time, and improve the detection effect of a short relaxation target body.

The invention provides a laser radar comprising an emission device configured to emit a detection light beam for detecting an obstacle; the detection device comprises a plurality of detection units, each detection unit comprises a pixel array, and the pixel array is configured to respond to an echo light beam reflected by the detection light beam on an obstacle and convert the echo light beam into an electric signal; the processing device is coupled with the detection device and is configured to recombine the electric signals output by the pixel array of the at least one detection unit in different forms to obtain a plurality of recombined pixel arrays; and generating a laser radar point cloud according to the plurality of recombined pixel arrays. According to the laser radar provided by the invention, the electric signals output by the pixel array of at least one detection unit are recombined in different forms, the laser radar point cloud is further generated according to the plurality of recombined pixel arrays, and the distance, resolution and other information of an obstacle are calculated; the signal-to-noise ratio, the distance measuring capability, the accuracy of the detection result and other detection performances of the laser radar can be improved.

The invention relates to the technical field of electrical prospecting, in particular to a spread spectrum induced polarization controllable transmitting and weak signal receiving method and system. The system comprises a transmitter and a receiver, the transmitter comprises a master control module, a waveform generation module and an isolation driving module, the waveform generation module is based on an FPGA, high-quality clock supply is ensured through clock management, a specific frequency signal synchronous or asynchronous with standard time is flexibly generated by using a soft core processor and a synchronous frequency division sub-module, and the signal is transmitted to the isolation driving module. Dead time processing is added to optimize inverter control; the isolation driving module ensures that the signal safely drives the IGBT inverter; the receivers are deployed in acquisition stations, each station is provided with at least three receivers, the middle receiver integrates current and voltage measurement, and the receivers on the two sides concentrate on voltage measurement. According to the technical scheme, the reliability and diversity of signal sending and the effectiveness of signal receiving can be improved.

The invention relates to the field of semiconductor heterojunction photoelectric detectors, in particular to a bias voltage adjustable photoelectric detector and a preparation method and application thereof.The detector sequentially comprises a substrate, a buffer layer, a p-type wide bandgap semiconductor layer and a p-type narrow bandgap semiconductor layer from bottom to top, the p-type narrow bandgap semiconductor layer partially covers the p-type wide bandgap semiconductor layer, and the p-type narrow bandgap semiconductor layer covers the p-type narrow bandgap semiconductor layer. The detector further comprises a first metal electrode and a second metal electrode, the first metal electrode is arranged on the p-type wide bandgap semiconductor layer, the second metal electrode is arranged on the p-type narrow bandgap semiconductor layer, the first metal electrode does not make contact with the p-type narrow bandgap semiconductor layer, and the second metal electrode does not make contact with the p-type narrow bandgap semiconductor layer. The forbidden band width of the p-type wide forbidden band semiconductor layer ranges from 3.1 eV to 5 eV, and the forbidden band width of the p-type narrow forbidden band semiconductor layer ranges from 0.3 eV to 1.2 eV. The prepared detector is high in sensitivity, low in power consumption and simple in structure, and can be applied to photoelectric detection.

The invention relates to a preparation method of TiO2 and TiO2 / ZnO heterojunction based on a hollow structure and application of the TiO2 and TiO2 / ZnO heterojunction in an ultraviolet detector, the hollow structure TiO2 is a TiO2 hollow sphere, a TiO2 hollow cube and a TiO2 hollow dodecahedron, the hollow heterostructure is composed of the hollow structure TiO2 and a ZnO nanorod, the ZnO nanorod grows on the surface of the TiO2 hollow structure, and the whole ZnO nanorod is hedgehog-shaped; the prepared hollow-structure TiO2 and TiO2 / ZnO heterojunction is coated on a conductive surface of FTO conductive glass to prepare a working electrode, the working electrode is connected with a counter electrode through a heat sealing film, electrolyte is injected into an internal cavity to obtain the ultraviolet detector with high detection performance, and the ultraviolet detector is suitable for the field of ultraviolet detection. The method adopted by the invention has the advantages of simplicity in operation, low cost and high universality, different hollow-structure TiO2 and hedgehog-shaped TiO2 / ZnO heterojunctions such as spherical, cubic and dodecahedron heterojunctions are synthesized, an ultraviolet detector with a self-energy-supply characteristic is further prepared, and the application of a TiO2 nano material in the field of photoelectric detection is expanded.

The utility model discloses a nuclear detector cable which comprises a cable core formed by twisting a plurality of signal wire cores and a plurality of control wire cores and a sheath arranged on the outer side of the cable core, a metal braid layer is arranged between the sheath and the cable core, and buffer strips are filled in gaps formed between the signal wire cores and the control wire cores. Each buffering strip is provided with a plurality of containing holes extending in the length direction of the buffering strip, and at least one steel wire is embedded in each containing hole. According to the utility model, the shock resistance of the cable can be improved, the bearing capacity of detection equipment and the like can be ensured without sacrificing the bending performance, the stability of the detection performance is ensured in a complex detection environment, and the service life is prolonged.

The present invention discloses a multi-longitudinal mode Doppler laser radar calibration method based on dual F-P interferometers. The cavity length of the dual F-P interferometer is adjustable within a large range, and has two tuning modes: coarse adjustment and fine adjustment, which are controlled by an F-P interferometer controller; the calibration light source is multi-longitudinal mode, quasi-continuous backscattered light after the emitted laser pulse is incident on a long bare optical fiber. During calibration, a method of alternating coarse and fine scanning of the F-P interferometer cavity length is adopted. The present invention can accurately and conveniently realize the calibration of a multi-longitudinal mode Doppler laser radar system based on a dual F-P interferometer without changing the laser radar optical path structure, including the laser longitudinal mode spacing Λ and the free spectrum spacing ν of the F-P interferometer. FSR Matching calibration and dual F‑P interferometer transmittance curve calibration, between Λ and ν FSR Under the premise of matching, the optimal dual F-P interferometer transmittance calibration curve is obtained, so that the detection performance of the multi-longitudinal mode Doppler lidar system can be optimized.

The invention relates to a preparation method of a low-concentration phosphorus-doped VO2 thermosensitive film for cable infrared temperature measurement. The preparation method comprises the following steps: mixing vanadium pentoxide and oxalic acid, dissolving in deionized water, and heating in an oil bath to obtain a vanadyl oxalate solution; dissolving sodium hypophosphite in the vanadyl oxalate solution to obtain a mixed solution; enabling solute in the mixed solution to grow on the surface of the double-parabolic sapphire substrate by adopting a high-temperature hydrothermal method to form a modified thermosensitive film; washing the modified thermosensitive film with deionized water, and blow-drying; spin-coating one surface of the modified thermosensitive film with a hydrogen peroxide solution to obtain a sample; post-annealing treatment on the sample is completed, and the low-concentration phosphorus-doped VO2 modified thermosensitive film is obtained. The method has the beneficial effects that the surface roughness is reduced; the linear temperature measurement range is widened; temperature measurement is more sensitive; and the application range is wider.

The application discloses a hyperspectral remote sensing image constraint collaborative representation anomaly detection method based on global anomaly weighting. A local dictionary is constructed by using a sliding double window, a graph regular term constraint is added on the basis of collaborative representation in order to maintain the local geometric structure in the original data space, a graph constraint collaborative representation model is established, and a global anomaly saliency weight is constructed by using a spectral residual method in order to fully utilize the global features of the hyperspectral remote sensing image. Finally, the established graph constraint collaborative representation model and the constructed global anomaly saliency weight are nonlinearly fused. The application aims at solving the problems of insufficient utilization of the best representation of the to-be-tested image element in the reconstruction model and features, and effectively improves the precision of the hyperspectral anomaly detection by using the graph constraint collaborative representation model and the global anomaly saliency weight.

The invention relates to the technical field of underwater surveying and mapping stabilization, in particular to a stabilizing device for an underwater surveying and mapping instrument, which comprises a small carrying ship, two auxiliary floating seats are fixedly connected to the bottom end of the small carrying ship, and a positioning stabilizing seat is arranged on the inner side of the small carrying ship in a penetrating manner; a water flow divider is arranged at the front end of the positioning stabilizing seat, a stabilizing placing chamber is arranged on the inner side of the small carrying ship, a blocking frame is arranged on the inner side of the small carrying ship, a stability maintaining box is arranged on the inner side of the stabilizing placing chamber, and a balance stabilizing assembly is arranged on the inner side of the stability maintaining box. When the underwater surveying and mapping instrument stabilizing device is used, the influence of hull vibration on the stability of the surveying and mapping instrument in the moving process of the underwater surveying and mapping instrument can be reduced, the stability of sound wave transmitting and receiving signals is guaranteed, the propagation speed direction and strength of sound wave detection are guaranteed, and the accurate effect of detection and positioning is improved. And the overall surveying and mapping stable effect and quality are improved.

The present invention relates to an infrared optical lens and an installation method thereof, and specifically to an all-aluminum free-form surface off-axis low-temperature infrared optical lens and an installation method thereof, which are used to solve the shortcomings of existing low-temperature infrared optical lenses, such as small imaging field of view, large shielding ratio, and low engineering feasibility. The all-aluminum free-form surface off-axis low-temperature infrared optical lens effectively utilizes space to reduce mutual shielding between optical elements, so that light can propagate and form images within a larger field of view, significantly increasing the imaging field of view of the system; and a free-form surface mirror is used, and each reflector is eccentric and tilted with respect to the optical axis. Compared with a coaxial four-reflection optical system, cold reflection self-imaging of the detector will not occur, and there is no center shielding.

The present invention provides a pyramid wavefront sensor and a target wavefront detection method, wherein the pyramid wavefront sensor includes a first converging lens, a field stop, a corner cone prism, a second converging lens and a detection camera arranged in sequence along the propagation direction of a light beam, the vertex of the corner cone prism is located at the focus of the first converging lens, and the detection plane of the detection camera is conjugate to the plane where the vertex of the corner cone prism is located; a microlens array is arranged between the second converging lens and the detection camera, and the microlens array is used to effectively separate the target signal on the detection camera from the skylight background signal. The present invention combines the corner cone prism and the microlens array to achieve effective separation of the skylight background signal and the target signal, and cooperates with the skylight elimination algorithm to calculate and remove the skylight value of each sub-aperture, extract the effective information of the target, and is more suitable for the detection of weak targets, thereby effectively realizing the application of the pyramid wavefront sensor in the daytime natural guide star adaptive optical system.

The invention relates to the technical field of coal mine safety sensing, and particularly provides an underground multifunctional seismic wave sensing coupler which is simple in structure, convenient to install and good in sealing performance. Comprising a coupling body, fixing screws, a sealing ring and a sealing cover. The coupling body comprises a front end and a rear end, a rod insertion hole is formed in the front end of the coupling body, and threads are evenly distributed on the outer surface of the front end and used for installing and fixing screws. The rear end of the coupling main body is of a tetrahedral structure, each surface can be provided with mounting holes, and the mounting holes comprise a single-component sensor mounting deep hole, a three-component sensor mounting screw hole and a single-component cone sensor mounting threaded hole; the sealing cover is provided with a thread structure matched with the sensor groove, and the sealing ring is arranged on the sensor in a sleeving mode and matched with the sealing cover in a pressing mode, so that the coupling body and the sensor form a sealed coupling state.

The invention discloses a high-maneuvering low-speed target take-off and landing process parameterization detection method based on a common inductance signal. The method comprises the steps that a motion model of an aircraft in the take-off and landing stage is built, and a formula modeling result is obtained; obtaining distances and speeds of a plurality of suspicious targets; designing a band-pass filter in a Doppler domain to obtain an LVD result, calculating Doppler frequency information of the target, and obtaining accelerations of a plurality of suspicious targets; calculating retroreflection coefficients of the plurality of suspicious targets based on a radar antenna design principle; based on array antenna arrangement of a sensing system, obtaining space angles of a plurality of suspicious targets, and determining the space position of each suspicious target by combining the distances of the plurality of suspicious targets; and a detection module based on physical characteristics of the moving target is utilized to screen out an aircraft target according to respective threshold ranges of the speed, the acceleration, the retroreflection coefficient and the spatial position of the target. According to the invention, the detection capability of a low-speed and high-maneuverability moving target in a low signal-clutter-noise ratio environment is improved.

The invention discloses a nonmetal pipeline detection positioning device, method and system, and the positioning device integrates a sound generation device, a sound pickup, a main controller and the like through a detection box body, and an operator can carry one detection box body to carry out the detection work of a nonmetal pipeline. The sound generating device and the sound pick-up are used in cooperation, the position of the non-metal pipeline can be accurately determined by emitting the sound with the specific frequency and receiving the echo generated after the sound is transmitted in the non-metal pipeline, and the mode based on sound transmission is not limited by the non-conductive and non-magnetic characteristics of the non-metal pipeline; and the problem of non-metal pipeline detection can be effectively solved. The display device is installed on the detection box body and can display the position information of the nonmetal pipeline in real time. The main controller accurately analyzes and processes sound signals sent by the sound generating device and echo signals received by the sound pick-up, specific signals related to the non-metal pipeline are extracted, and the detection accuracy is improved.

The invention provides a high-sensitivity photoelectric detection module, and the module comprises a butt joint part which is used for fixing a ceramic ferrule which is inserted into the butt joint part and can emit an optical signal. The detection part and the butt joint part are coaxially arranged, and a photoelectric detector is arranged in the detection part and used for receiving an optical signal sent by a ceramic ferrule; the outer sleeve sleeves the outer sides of the butt joint part and the detection part, one side of the outer sleeve is rotatably connected with the butt joint part, the other side of the outer sleeve is in threaded connection with the detection part, and the distance between the ceramic ferrule and the photoelectric detector is adjusted through relative rotation between the outer sleeve and the flange fixing seat. Therefore, each photoelectric detector can exert the optimal detection performance, the detection sensitivity is improved, and the yield of products is improved.

The application provides a trim glass, a column assembly and an automobile, relates to the technical field of glass products, and the trim glass comprises a diffusion layer and a glass body, the diffusion layer has a set roughness and is arranged on one side of the glass body, the thickness of the glass body is 2.1 mm to 3.5 mm, the total iron content of the glass body is 0.00005% to 0.12%, the contents of cobalt, chromium and selenium are substantially zero, and the difference between the millimeter wave loss rates when the trim glass is placed and when the trim glass is not placed is 3.15 db to 5.47 db. The application reduces the metal shielding effect, so that the millimeter wave loss rate when passing through the trim glass is reduced, meanwhile, by adding a certain amount of TiO2, the problem that the coloring effect of the trim glass is deteriorated due to the reduction of metal content and the ultraviolet transmittance is improved is solved. The trim glass can better adapt to the millimeter wave radar and improve the detection performance of the millimeter wave radar.

The invention belongs to the technical field of antennas, and relates to a fan-shaped dipole antenna, which comprises a rectangular dielectric layer and a radiation layer arranged on the dielectric layer, the radiation layer comprises two fan-shaped radiation patches which are distributed in an axial symmetry manner relative to any symmetry axis of the dielectric layer, and the two radiation patches are used as two oscillators of the dipole antenna; the two radiation patches are arranged at an interval, and the feed structure is loaded in the interval between the two radiation patches; the central angle of the sector on the radiation patch is an acute angle. The bandwidth of the ultra-wideband antenna can be expanded, and the ultra-wideband antenna is simple in structure and convenient to process.

The invention discloses a concrete crack detection device and detection system, and relates to the technical field of concrete crack detection. Comprising a crack detection mechanism, the crack detection mechanism comprises a detection vehicle, the top of the detection vehicle is fixedly connected with a mounting seat, the bottom of the detection vehicle is provided with electric control driving wheels, and the mounting seat is internally provided with a storage battery; the device can perform crack detection on the concrete pavement, is beneficial to cleaning the concrete pavement, and is convenient to sweep dust at the pavement crack, so that the crack detection and recognition effect is improved, the detection and use effects of the device are improved, and meanwhile, the concrete crack can be detected and recognized; according to the detection device, pavement cracks and internal cracks can be accurately detected, images and crack width and depth data during detection can be transmitted to the detection display equipment to be displayed, detection personnel can conveniently analyze and record the cracks, and the detection and recognition accuracy of the detection device is improved.

The invention provides a photoelectric absorption conversion layer, a self-powered photoelectric detector and a preparation method of the self-powered photoelectric detector, and belongs to the field of photoelectric detection. The photoelectric absorption conversion layer provided by the invention comprises three BixFeO3 film layers, x in each BixFeO3 film layer is more than or equal to 1 and less than 1.1, and the values of x in each BixFeO3 film layer are different. According to the self-powered photoelectric detector prepared by the photoelectric absorption conversion layer provided by the invention, the open-circuit voltage is 0.46-0.66 V and the short-circuit current is 1.13-1.6 * 10 <-4 > A / cm < 2 > under the illumination condition of 500 nm, and a zero-bias I-t curve shows that the self-powered photoelectric detector has a stable photoresponse phenomenon under the illumination condition of 500 nm; by adjusting the value of x in each BixFeO3 film layer, a photoelectric absorption conversion layer with different defect concentrations distributed in the longitudinal direction is designed, and then regulation and control over the light current density and the photo-generated voltage of the self-powered photoelectric detector are achieved.

The present invention provides an aperture coded spectrum detection device based on compressed sensing, which solves the problem that both the dispersion type and the interference type spectrum detection technologies in the existing spectrum detection technologies have certain deficiencies. The device comprises an imaging mirror, a filter array, a spatial light modulator, a unit detector and a data processing unit arranged in sequence along the light beam direction; the imaging mirror is used to image the target at a primary image plane position; the filter array is used to modulate the spectrum information of the target so that the wavelengths of the light at different aperture positions are different; the spatial light modulator is used to encode the modulated spectrum information; the unit detector is used to receive the encoded image signal; the data processing unit is used to decode the encoded image signal received by the unit detector, and the spectrum data of the target can be restored.

An electronic sentinel and its regional joint defense system include a main detection unit, a main control module, and at least one electronic sentinel unit. The main detection unit includes a detection unit and a communication module. The electronic sentinel unit includes a mobile pack, an optical scanning head, a communication module, a main control board, a transmitting unit, a positioning module, and an automatic omnidirectional deflection unit. The electronic sentinel unit can be mounted on a mechanical vehicle or carried by personnel via the mobile pack. A communication link enables information sharing between the units. The automatic omnidirectional deflection unit compensates for attitude changes caused by the movement of the mobile vehicle, ensuring the stability of the optical scanning head. Through the coordinated operation of the main detection unit and the electronic sentinel unit, the system achieves full coverage of detection ranges, filling security gaps in building gaps. The use of mobile electronic sentinel units allows for flexible deployment of the detection range, adapting to various complex terrain environments and improving the overall effectiveness of regional security.

The present invention proposes a reverberation suppression method based on angle-delay-Doppler three-dimensional deconvolution, which transmits narrowband pulses to the target detection area, and then uses a set of matched filters carrying different Doppler frequency shifts to process the array element echoes to obtain a delay-Doppler two-dimensional output; conventional beamforming is performed on the delay-Doppler two-dimensional output of the array element to obtain an angle-delay-Doppler three-dimensional output; an angle-delay-Doppler three-dimensional beam map is obtained, and its absolute value is taken as the point spread function of the R-L algorithm; the absolute value and point spread function of the angle-delay-Doppler three-dimensional output are used as the input of the three-dimensional R-L algorithm, the number of iterations is selected, and the reverberation suppression result is calculated according to the deconvolution formula. The present invention uses the inherent energy distribution difference between the target echo and the strong reverberation in the three dimensions of angle, delay, and Doppler to suppress reverberation, improve the multi-dimensional resolution capability, suppress the multi-dimensional sidelobe energy leakage, and suppress the bottom and surface reverberation at the same time.

The application provides a tunnel drainage system detection and dredging device, which comprises a control system, a detection system, a crushing system, a chassis driving system and a cleaning system arranged on a vehicle body respectively, the control system is connected with the detection system in communication, and the control system is connected with the crushing system, the chassis driving system and the cleaning system respectively for control. The device can accurately detect the position and thickness of the front blockage, and can clean and dredge the medium and low degree blockage through mechanical facilities, so that the detection and cleaning of the drainage system are facilitated.

The present invention discloses a small β detector for monitoring particulate matter based on MPPC, and its structure includes a plastic scintillator, a light guide, an MPPC, a circuit board, a housing, a shielding window, and a cable. The scintillator and the MPPC are coupled together by optical glue through the light guide; the side of the scintillator and the side of the light guide are both made with a reflective layer; the circuit board is integrated with a temperature compensation power supply circuit and a signal processing circuit; the housing includes an end cover, a main body, and a back cover, and the end cover and the front end of the main body are both provided with the shielding window. The present invention adopts a new type of semiconductor optoelectronic device MPPC, matches the β-type scintillator and the power supply and signal processing circuit suitable for MPPC, and realizes the counting detection of β rays; and by using the light guide, a larger effective detection area is realized when using an MPPC with a smaller effective photosensitive area, while ensuring a low background and high detection efficiency, which is very suitable for use in the fields of atmospheric dust particle monitoring, paper thickness measurement, etc.

The utility model relates to the technical field of radars, and discloses an antenna structure for improving the near-end detection performance of a radar, a radar device and traffic equipment, a plurality of antenna arrays are arranged along a first direction to form an antenna area array, and each antenna array is provided with a first array element value; the first array element values of the antenna arrays located in the middle of the antenna area arrays are gradually reduced along the antenna arrays located on the outer sides of the antenna area arrays; a wider near-end wave beam can be obtained while a far-end wave beam is narrower, so that the near-end detection performance is improved while the working distance is ensured; and the performance adaptive to a traffic application scene is improved.

The utility model relates to a navigation radar integrating two systems of continuous wave and pulse pressure, which comprises a receiving antenna, a transmitting antenna, a digital-to-analog converter and an analog-to-digital converter, the digital-to-analog converter is connected with a phase discriminator, the phase discriminator is connected with a PLL loop, the PLL loop is connected with a filter amplifier and the analog-to-digital converter in series, and the filter amplifier is connected with the analog-to-digital converter. The receiving antenna is connected with an amplitude limiter, a signal of the amplitude limiter enters a PLL loop after being subjected to low-noise amplification, the PLL loop is connected with a radio frequency switch, the radio frequency switch is connected with a low-power channel and a high-power channel, and the low-power channel and the high-power channel are both connected with the transmitting antenna; the utility model has the advantage of good detection performance.

The application provides a self-adaptive adjustment distributed optical fiber vibration sensor method, system and device, which is applied to the field of optical fiber sensing technology and comprises the following steps: receiving parameters of a DVS, selecting a monitoring mode applied by self-adaptive adjustment according to the received parameters of the DVS, the monitoring mode comprising a full-line measurement mode and a local measurement mode, calculating average light intensity and interference coefficient of a preset reference optical fiber section, judging whether the average light intensity is within a preset range, if yes, judging whether the interference coefficient is within a preset range, if yes, demodulating and calculating a vibration signal and positioning information, matching state information and early warning information according to a preset algorithm model, and displaying the output state information and early warning information. The application adopts the DVS to adaptively adjust line parameters after the optical fiber is connected to realize the best monitoring effect, and the DVS is changed from professional and complex to simple and easy to use without complex debugging by professional technicians.