133results about How to "Realize dynamic detection" patented technology

The invention discloses a dynamic detecting device and an adjusting method for misalignment of a rotating machine. The dynamic detecting device comprises a control cabinet, a testing platform, a stepping motor and a base board, wherein the top surface of the testing platform is provided with a guiderail. The lower part of the base board is embedded on the guiderail through a chute. The base board can slide on the guiderail. The lower part of the base board is connected with a lead screw through a nut in a threaded connection manner. One end of the lead screw is connected with output shaft of the stepping motor. The adjusting method comprises the steps of (1) testing whether the rotating machine is complete; (2) adjusting an eddy current sensor to an appropriate position; (3) resetting the position of the base board; (4) acquiring a signal; (5) drawing an axis orbit; (6) determining the misalignment degree; (7) determining the misalignment type; (8) computing an adjusting amount in XZ; (9) computing the adjusting amount in XY; and (10) acquiring another point in an acquired signal and computing the adjusting amount. The dynamic detecting device has a beneficial effect of detecting the misalignment fault of rotating shafts with different shaft diameters.

The invention relates to a novel hexapod bio-robot. The novel hexapod bio-robot comprises a body platform and six modular mechanical feet with the same structure, wherein the body platform is a rack for connecting the six mechanical feet. The novel hexapod bio-robot is characterized in that the body platform comprises an upper rack plate, a lower rack plate and connecting plates, wherein the upper rack plate and the lower rack plate are in the same shape and size and connected through the connecting plates, the six mechanical feet are symmetrically distributed between the upper rack plate and the lower rack plate and on two sides in the length direction of the upper rack plate through flanges, and adjacent mechanical feet have the equal distance; each mechanical foot comprises a coxa unit, a meropodium unit and a tibia unit, the coxa unit and the tibia unit are fixed at two ends of the meropodium unit respectively, and the upper part of the coxa unit is connected with the body platform. The robot is provided with a foot end sensing system and has multiple motion modes, thereby realizing omni-directional walking in the complex environment and dynamic sensing for the terrain environment.

The invention relates to a method for automatically detecting tunnel traffic jam events based on video. The method comprises the steps that acquired real-time traffic parameter information of detection points to be detected is transmitted to a background server in real time by video detection equipment; an automatic detection processing server calculates the average traffic flow density parameter of a visible area and the dynamic traffic flow density parameter of a blind area, decision-making tree state processing is carried out on the traffic parameters of the visible area and the blind area, and the overall traffic state level of a current tunnel is judged automatically; issuing terminal equipment automatically issues the information of the traffic state level of the current tunnel to the public. The invention further discloses a device for automatically detecting the tunnel traffic jam events based on the video. The traffic parameter information of detection points of the visible area and the blind area of the tunnel are acquired in real time, traffic flow density parameters of all segments are extracted, section division is carried out according to a very smooth traffic state, a smooth traffic state, an amble traffic state, a crowd traffic state and a jam traffic state, and the tunnel road traffic jam events are automatically judged and detected.

The invention discloses a vortex line scanning thermal imaging detection system and method. The detection system comprises a trigger with at least two output ends, one output end of the trigger is connected with a coil through a vortex flow heating module, other output ends of the trigger are respectively connected with one or more thermal imaging acquisition devices, each thermal imaging acquisition device is equipped with a lens used for adjusting the size of a viewing field, the output end of each thermal imaging acquisition device is connected with a computer, the vortex line scanning thermal imaging detection system further comprises a scanning control module connected with the output end of the computer, the output end of the scanning control module is connected with a motion device, a clamping device is further arranged on the motion device, the clamping device is respectively and fixedly connected with the coil and each thermal imaging acquisition device, or the clamping device is fixedly connected with a detected object. Compared with the prior art, the vortex line scanning thermal imaging detection system provided by the invention is convenient to use, high in detection efficiency, has a good imaging effect, high in defect detecting accuracy, low in detecting cost, and high in detecting result reliability.

The invention discloses a monitoring method and system based on a door motion state. The method comprises the steps of detecting a door by use of OpenCV and obtaining a feature point of the door; recording a first parameter of the feature point in a video frame i relative to a door initial state; recording a second parameter of the feature point in a video frame i+1 of post motion of the door relative to the door initial state; performing contrastive analysis on the first parameter and the second parameter to determine the position of the door; and repeating above steps in preset time intervals, and judging the motion state of the door. Through adoption of the method, the motion process from closing to opening or from opening to closing of the door is realized, the whole process is dynamically monitored, and the method has high practicability.

A method for detecting the penetrability of the concrete based on a multiple internal reflection infrared spectrum relates to a method for detecting the penetrability of the concrete, and especially relates to a method for detecting the penetrability of the concrete based on a multiple internal reflection infrared spectrum technique. The invention provides a method for detecting the penetrability of the concrete based on multiple internal reflection infrared spectrum, wherein the method has the advantages of easy operation, high operation sensibility, intuitionistic and reliable data, suitability for continuously measuring the transmission characteristic of various species in the concrete dynamically, and significant actual meaning for evaluating the penetrability of concrete material. The preparation for sample piece of concrete comprises the following steps: wet curing the sample piece of concrete under room temperature, slicing according to the required thickness, grinding and drying. An MIR-FTIR test comprises the following steps: measuring with a Fourier Transform infrared spectrometer, collecting the infrared spectrogram of dried concrete sample/total internal reflection wafer interface as a background, and when the electrolytic cell is filled with solution to be measured, collecting the infrared spectrogram at different permeation time until a time when the peak intensity of spectrogram does not increase.

The invention discloses a laser detection device for measuring the diameter of a wheel of a railway vehicle. The laser detection device for measuring the diameter of the wheel of the railway vehicle comprises a laser transmitter, a CCD camera, a laser distance measuring sensor and a central processing control system. A detection window is cut in a main rail on which a locomotive travels; the laser transmitter and the CCD camera are installed below the detection window of the main rail, the laser distance measuring sensor is installed at the position, exactly facing the rim of the wheel, of the inner side of the main rail, the laser transmitter irradiates the tread of the wheel to form a light section shape curve representing the overall dimensions, the CCD camera obtains the light section shape curve, and transmits data to the central processing control system, the laser distance measuring sensor obtains data of the distance of the rim of the wheel through measurement, and sends the data to the central processing control system, and the central processing control system carries out calculation to obtain the diameter of the wheel. According to the laser detection device for measuring the diameter of the wheel of the railway vehicle, the laser distance measuring sensor is used for carrying out auxiliary measurement, the position of the rolling circle of the tread of the wheel is accurately located, the accurate measurement of the diameter of the wheel is achieved, the structure is simple, applicability is good, and traveling safety of trains is ensured.

The invention provides an ADPSS (advanced digital power system simulator) based test system for a low current grounding line selector and a test method of the system, relates to the field of low current grounding test and aims to guarantee reliable operation of a power supply system through fault test on the power supply system before the power supply system is put into use. The system comprises an ADPSS simulation system, a physical interface box and a power amplifier, wherein the ADPSS simulation system is used for building a system model and simulating faults, a test signal output end of the ADPSS simulation system is connected with a test signal input end of the power amplifier, and a test signal output end of the power amplifier is accessed to a to-be-tested system through the physical interface box. The ADPSS simulation system is used for building a typical 35KV system distribution network line model for fault simulation, the fault test is performed on corresponding protection devices, real-time current and voltage simulated through simulation can be directly input into the to-be-tested system, and accordingly, the dynamic detection for the to-be-tested system is realized.

The invention discloses a method and a device used for operating a computer through a user to detect the age of a user. The method of the invention comprises the following steps: two keyboard keypads are specified according to the statistical data of the stretching length of the palms of the adults and the minors and the spacing distance between two keypads is determined as the maximum palm stretching length of the minors; the user is told to press two specified keypads using one hand and the key value of the key that the user presses is detected, and the device judges whether the detected key value is the one of the specified keypad; if the detected key value is the one of the specified keypad, the device then judges that the age of the user belongs to the age bracket of the adults; if not, the device judges that the age of the user lies in the age bracket of the minors. he adoption of the invention can realize operating the computer to dynamically detect the age bracket of the user, thus realizing providing the corresponding contents and services aiming at the users of different age brackets so as to intensify the protection of the user and the data contents.

The invention belongs to the field of attack detection, and discloses ROP (return-oriented programming) on the basis of Pin tools and a method for dynamically detecting variant attack of the ROP. The method includes steps of 1, enabling target programs by the aid of binary Pin instrumentation tools; 2, tracking the target programs and matching ret instructions, call instructions and jmp instructions with one another; 3, detecting the variant attack by the aid of detection modules on the basis of the ret instructions if the ret instructions are available, detecting the variant attack by the aid of detection modules on the basis of the call instructions if the call instructions are available and detecting the variant attack by the aid of detection modules on the basis of the jmp instructions if the jmp instructions are available; 4, raising attack alarm if exception of the target programs is detected by the detection modules or skipping to the step 2. The ROP and the method have the advantages that the ROP and the variant attack of the ROP can be dynamically detected, and the ROP and the method are extremely high in practicality and universality.

The invention discloses a method and a device for dynamically detecting defects of ballastless track. At first, an acoustic wave excitation unit is used to input vibration energy to a track plate, anacoustic wave in that frequency range of 10 to 20 kHz is generated, and the acoustic wave signal is collected by a microphone sensor and transmit to a computer. The computer calculates the collected acoustic wave velocities and compares the velocities with the threshold values to judge whether there are defects, specifically, if the collected acoustic wave velocities are smaller than the thresholdvalues, the defects are judged. The greater the difference from the threshold is, the greater the defect is. The invention realizes the dynamic detection of ballastless track defects. The invention has the advantages of fast detection speed, high efficiency, long-distance detection operation in several hours of skylight time, basically no influence of external environment on the detection result,high detection precision, and the defect position can be marked at the same time so as to facilitate later maintenance and repair, so that the detection and maintenance work efficiency is greatly improved.

The invention discloses a method for detecting a thrombin protein concentration. The method for detecting the thrombin protein concentration comprises the following steps of modifying a substrate; connecting DNA with the modified substrate; connecting and magnetizing magnetic beads; measuring an interface point of a complementary DNA chain; detecting the thrombin protein through sequence regulation; detecting the thrombin protein through mechanical force regulation. According to the method disclosed by the invention, one end of a nucleic acid aptamer is modified by the magnetic beads; by means of measuring a low-intensity magnetic field generated by the magnetic beads, the size of self residual magnetism of the magnetic beads is obtained; by means of magnetic signal strength change, a concentration of a target detection object is obtained at the same time; not only is a range of the target detection object dynamically regulated by a complementary sequence of the nucleic acid aptamer, but also a detection limit of the target object is widened and flexibility of the target object is reduced by the mechanical force change.

The invention discloses a sizing machine which comprises a machine platform, yarn guide devices, a drying device, a sizing device and a display device. Each yarn guide device comprises warp beams and first detection parts, the warp beams are arranged on the machine platform, the first detection parts are used for detecting whether yarn on the corresponding warp beams has broken ends or not, the drying device comprises a drying barrel and a second detection part, the drying barrel is arranged on the machine platform and used for drying the yarn, the second detection part is arranged on the machine platform and faces the drying barrel to be used for detecting whether yarn on the drying barrel has broken ends or not, the sizing device comprises a sizing tank and a third detection part, the sizing tank is arranged on the machine platform and used for yarn sizing, the third detection part is arranged on the machine platform and faces the sizing tank to be used for detecting whether yarn in the sizing tank has broken ends or not, and the display device is used for displaying detected results of the first detection parts, the second detection part and the third detection part. The sizing machine is manpower saving and high in personnel utilization rate.

The invention relates to the technical field of the non-destructive testing technology of seeds, in particular to a seed separation device. The seed separation device comprises a separation mechanism, a feeding mechanism and a receiving mechanism. The separation mechanism comprises an air source control box, a partial pressure box, a rotating shaft rotatably penetrating the partial pressure box, a rotating pillar connected with the lower end of the rotating shaft, and an adsorption piece arranged at the lower end of the rotating pillar. The rotating pillar is provided with a through hole communicated with a positive-pressure chamber or a negative-pressure chamber of the partial pressure box. The adsorption piece is provided with a cavity communicated with the through hole. An adsorption hole is formed in the bottom of the horizontal cavity wall of the cavity. The feeding mechanism comprises a material plate arranged below the separation mechanism, and when the adsorption hole of the adsorption piece is located above the material plate, the cavity is communicated with the negative-pressure chamber. The receiving mechanism comprises a receiving piece arranged below the separation mechanism. When the adsorption hole of the adsorption piece is located above the receiving piece, the cavity is communicated with the positive-pressure chamber, and the receiving piece is provided with an induction sensor connected with an air source controller. The invention further relates to a seed vigor non-destructive testing system comprising the separation device. Continuous and automatic singular separation of seeds is achieved.

The invention discloses a method and a device for dynamic non-destructive measurement of CRTSII type plate-type ballastless track seam. The method comprises the following steps: firstly enabling an ultrasonic pulse transmitting receiver to generate a sine wave exciting signal modulated by a Hanning window, amplifying the exciting signal by a preamplifier to drive an air-coupled ultrasonic transmitting transducer to convert the electrical signal into an ultrasonic wave to hit a CRTSII type plate-type ballastless track plate, then adopting an air-coupled ultrasonic receiving transducer to collect a guided wave echo signal, amplifying the guided wave echo signal by a post-amplifier, subjecting to A/D conversion, transmitting to the ultrasonic pulse transmitting receiver, then transmitting thereceived guided wave echo digital signal to a computer by the ultrasonic pulse transmitting receiver, performing signal processing and analysis by the computer adopting MATLAB software, and judging whether a seam defect exists by comparing an obtained first wave amplitude with a preset threshold value. By adopting the method and the device provided by the invention, the high-efficiency, non-destructive and real-time measurement of the seam defect of a CRTSII type plate-type ballastless track can be realized.

The invention discloses a device based on a micro-nano fluid control reflection interference spectral imaging system and a realization method. The device comprises a micro fluid pump, a micro fluid control sample cell system, an optical microscope, a C-port optical path switcher, a CCD sensor, a spectrometer, a positioning light source, a detection light source, and a computer. The C-port optical path switcher is connected to the positioning light source, the CCD sensor, and the spectrometer through optical fibers; the CCD sensor and the spectrometer are both connected to the computer, and the computer software collects detection data and analyzes the results. According to the system, the object lens of the microscope is taken as the optical probe; compared with the conventional method that takes a detector as the probe, the system has the advantages that a fixing device for fixing a probe is not needed, the optical path integration degree of the system is improved; moreover, an imaging and positioning system is used to obtain the specific position of a sample, and thus the detection precision is improved. The morphology feature imaging of samples and reflection interference spectrum collection can be switched in real time, and thus the in-situ dynamic realtime detection of an analysis sample can be realized.

The invention discloses a dynamic frequency conversion method for a blockchain server chip, and the method comprises the following steps: recording the total number Nri of calculation results, the total number Nei of error calculation results and the current working frequency of each chip in a period when each preset period is ended; when the chip i meets the condition that Nri (a calculation result total number threshold value Nr or Nei) is not equal to a calculation result total number threshold value Ne, the chip i is a problem chip; and respectively adjusting the frequency of each chipsetcontaining the problem chip. According to the invention, when each period is finished; the state of the chip is detected and judged; according to the technical scheme, dynamic detection of the problemchips is achieved, then the frequency of the problem chips is adjusted under the condition that conditions are met, dynamic frequency conversion is achieved, all the chips continue to operate stably,performance losses, caused by chip aging, of the blockchain server are minimized, the aged problem chips are processed in time, and the calculation efficiency of the server is improved.

The invention discloses a railway wheel online detection rail device. The railway wheel online detection rail device comprises transition region main rails, guard rails and detection region main rails. The railway wheel online detection rail device is characterized in that the transition region main rails, the guard rails and the detection region main rails are installed on guard rail tie plates in parallel. It is guaranteed that the upper surfaces of the transition region main rails, the upper surfaces of the guard rails and the upper surfaces of the detection region main rails are located at the same horizontal height. The guard rails are arranged on the inner sides of the transition region main rails and keep a distance from the transition region main rails. The detection region main rails are arranged on the outer sides of the transition region main rails, and the detection region main rails abut against the transition region main rails to form transition regions. The detection region main rails are in fastening connection with the transition region main rails through bolts in the transition regions. According to the railway wheel online detection rail device, the transition region main rails are tightly connected with the detection region main rails at equal height, so that the transition stability is ensured; the guard rails restrict wheel flanges to enable wheels not to laterally deviate too large after entering detection regions, so that the measurement accuracy is improved.

The invention discloses a high-speed railway side slope deformation detection method and device. The method comprises the steps of obtaining the three-dimensional point cloud data of a side slope along a high-speed railway through a high-speed railway side slope point cloud collection system which comprises laser radar equipment, a mileage positioning synchronization unit and a point cloud data acquisition server, performing point cloud registration processing on the three-dimensional point cloud data by using an iterative closest point algorithm according to the reference point cloud data in the high-speed railway scene, extracting current side slope point cloud data from the three-dimensional point cloud data after point cloud registration processing, and extracting reference side slope point cloud data from the reference point cloud data in the high-speed railway scene, respectively carrying out voxelization processing on the current side slope point cloud data and the reference side slope point cloud data, and carrying out high-speed railway side slope deformation detection according to a voxelization processing result. According to the embodiment of the invention, the high-speed railway side slope deformation can be detected, the detection cost is saved, and the detection efficiency and accuracy are improved.

The invention belongs to a mechanical seal detection device and a flushing detection process. The device comprises a mechanical structure part, a detection part and a control part. The mechanical structure part comprises a main motor, and a frequency converter arranged on the main motor. A main motor spindle is connected with the pump shaft through a coupler. One side of the pump bracket is connected with the pump shell through a pump body bolt. An end cover is arranged on the outer side of the pump shell, the pump shaft in the pump bracket is connected with the shaft sleeve through a key, a locking nut matched with the shaft sleeve is arranged at the end of the pump shaft, a rotating part of the mechanical seal is arranged outside the shaft sleeve, a fixed part of the mechanical seal is connected with the pump shell, and the rotating part of the mechanical seal is matched with the fixed part of the mechanical seal. According to the invention, dynamic detection of the mechanical seal can be realized, and the dynamic detection is carried out based on various flushing schemes of API682, so that the real sealing effect of the mechanical seal can be truly reflected, and temperature, pressure, vibration, displacement and rotating speed data can be effectively monitored.