63results about How to "Achieving Accurate Measurements" patented technology

The invention discloses a railway infrastructure detection system. The system involves a positioning synchronization subsystem, and a rail geometry detection subsystem, a rail contour detection subsystem, a rail state detection subsystem, a rail wheel force detection subsystem, a catenary geometric parameter detection subsystem, a pantograph-catenary current collection parameter detection subsystem which are in communication with the positioning synchronization subsystem. According to the system, on the basis of the structural characteristics and operation modes of urban rail transit infrastructure, the plurality of detection subsystems are integrated on a urban rail transit electric bus, rail geometric parameters, rail contour abrasion, rail state information, rail wheel interaction force, catenary geometric parameters and pantograph-catenary current collection parameters of the urban rail transit infrastructure are synchronously collected and accurately measured, the detection efficiency is improved, the urban rail transit operation maintenance cost is reduced, and the system can be widely applied to urban rail traffic construction and operation and maintenance.

The invention discloses a method for automatically calculating the crown projection area of a single tree based on vehicle-mounted laser point cloud data, and specifically relates to a cross field of geographic information and information technologies. The method for automatically calculating the crown projection area of a single tree based on the vehicle-mounted laser point cloud data is characterized in that ground feature point cloud to be classified is acquired through preprocessing original point cloud data by using three-dimensional point cloud data acquired by a vehicle-mounted laser mobile measurement system, a single tree is accurately recognized according to characteristics of different ground features by using a classification method of hierarchical projection, and automatic calculation for the projection area of the single tree is realized by further utilizing a convex hull algorithm. According to the method, the single tree is extracted from mass point cloud data, and a problem of single tree extraction is solved. Furthermore, calculation for the crown projection area is performed, so that a problem that the crown projection area of the single tree is difficult to be measured accurately is solved, and automatic calculation and accurate measurement for the crown projection area of the single tree are realized.

The invention discloses an underwater fixed-depth and fixed-height towing device which is provided with an underwater carrier, wherein the underwater carrier is connected with a cable winding / unwinding device by a cable, a probe of a depth measuring transducer is arranged on the underwater carrier, an output signal of the probe of the depth measuring transducer is connected with a display and control terminal by a cable, and a control signal output by the display and control terminal is used for controlling the cable winding / unwinding device. The underwater fixed-depth and fixed-height towing device does not need power and is low in cost, the probe of the depth measuring transducer can acquire depth from the towed carrier to the water surface or height from the towed carried to the water bottom in real time, the display and control terminal can control the cable winding / unwinding device according to measured depth from the towed carrier to the water surface or the height from the towed carrier to the water bottom, and the depth or the height of the towed carrier can be compensated and regulated in real time through the winding / unwinding for the cables and control on a navigational speed of the cable winding / unwinding device, so that the depth of immersion and underwater height can be controlled, so as to realize accurate measurement and detection in underwater fixed-depth and fixed-height towing.

The invention discloses a surface acoustic wave temperature monitoring system suitable for a gas insulated switch cabinet, which includes a surface acoustic wave radio frequency detection radar and a surface acoustic wave sensor, wherein the surface acoustic wave radio frequency detection radar is used for generating and emitting the electromagnetic signals for detection, detecting the electromagnetic signals with the temperature information emitted back from the surface acoustic wave sensor, and digital signal processing the electromagnetic signals with the temperature information, so as to obtain the temperature information; and the surface acoustic wave sensor is used for converting the electromagnetic signals received by the sensor antenna into surface acoustic wave signals, converting the surface acoustic wave signals with temperature information reflected by the reflecting grating into electromagnetic signals, and emitting the electromagnetic signals. By adopting the surface acoustic wave temperature monitoring system, the precise measurement and real-time monitoring alarm on the temperature of the gas insulated switch cabinet bus are realized.

The invention discloses a system and method for measuring a battery level. A voltage collection unit of the system is connected to a preset node of a battery branch, and is used for collecting a voltage across two ends of a to-be-measured battery. A state obtaining unit is used for obtaining the current operation state of a mobile terminal. A voltage correction unit is used for connecting the voltage collection unit and the state obtaining unit, and is used for correcting the collected voltage according to the current operation state of the mobile terminal and outputting the corrected voltage. The processing unit is connected with the voltage correction unit and the state obtaining unit, and is used for calculating electric quantity data according to the corrected voltage outputted by the voltage correction unit or the current operation state of the mobile terminal, and outputting the electric quantity data. According to the invention, the system can achieve the precise measurement and display of the battery level without an additional circuit. Compared with a conventional electric quantity measurement method, the method improves the electric quantity precision by about 10%, and saves the space occupied by the mobile terminal.

A method for measuring the positioning parameter of automobile front wheel includes using cross point of master pin and knuckle axis as point of origin to measure out and alpha for any three positions, measuring external angle of dip alpha at front wheel turnangles as delta o, measuring gamma at turnangle as delta o1 to right and measuring alpha at turnangle as beta o2 to left, substituting measured data to formula sin betao=*** and sin gamma=ay / (Cos*** to solve out internal angle of dip for master pin.

The invention discloses an online dynamic vision laser precise processing method. When workpieces are advanced on a production line at uniform speed, the position and time information of the workpieces is acquired through a CCD high-speed camera in real time; the needed time of the workpieces from an appointed detecting position of the CCD high-speed camera to a laser processing center and the relative offset are calculated; a gesture of a laser head is synchronously compensated and calibrated through a laser auxiliary moving mechanism; when the workpieces are advanced to the processing position, the laser is triggered to irradiate the surfaces of the workpieces to finish high-precision surface laser processing of the workpieces moving at uniform speed; the positioning error is lower than 0.1 mm; and the three-dimensional positions of the workpieces are not needed to precisely adjust. The online dynamic vision laser precise processing method can guarantee the processing precision without needing any other sensors or precise tools, prominently improves the production line processing efficiency, reduces the hardware cost, and can effectively guarantee the realization effect.

A precise shaft dynamic torque measuring instrument relates to a shaft measurement technology and solves the problem that shaft friction torque can not be accurately measured and the test scope is small. The precise shaft dynamic torque measuring instrument comprises a structure adjusting subsystem, a pitching and yaw detection shaft subsystem, a positioning installation subsystem, a lateral roller detection shaft subsystem and a support and detection platform subsystem and measures friction torque of a fake load on vertical shaft direction. A torque motor drives a torque sensor to rotate through a toothed shaft, the displacement is adjusted on the vertical and horizontal direction, and a handwheel is rotated to move a leading screw nut mechanism vertically or horizontally along a linear guide rail. A rotary table drives a vertical sliding bench fixed together with a connection board to realize rotation of changing angle at certain level. A counterweight block is added on a fixed pulley on the vertical sliding bench to prevent extra torque, and verticality precision is ensured.

The invention discloses an accurate facial paralysis degree evaluation method and device based on face feature points. The method comprises the following steps: establishing a facial paralysis key point detection model; acquiring to-be-detected data and processing the to-be-detected data; sequentially inputting an expression-free natural state static image, a sequence image I, a sequence image II,a sequence image III and a sequence image IV into the facial paralysis key point detection model to output a plurality of corresponding groups of face shapes, and updating the plurality of groups offace shapes; evaluating the facial paralysis degree of the to-be-detected user; calculating theta1, theta2, theta3, theta4, theta5, theta6, theta7, theta8, theta9 and theta10 and comparing the theta1,theta2, theta3, theta4, theta5, theta6, theta7, theta8, theta9 and theta10 with threshold values; and judging the facial paralysis degree of the to-be-detected user through the comparison result, andcalculating a facial paralysis index. According to the invention, the detection model has high detection positioning precision, the precision and accuracy of comprehensive evaluation and detection ofthe facial paralysis degree of the to-be-detected user are greatly improved, and a powerful support is provided for prevention, discovery and treatment of facial paralysis patients.

The invention relates to a calibration control system and method for an attitude control engine vector thrust measuring device and solves the problems that an existing vector force sensor is relatively high in uncertainty of a measurement indicating value of a sensor and repeatability is poor if field calibration correction is not performed. The control system comprises a control module, an acquisition module unit, a storage module, a data processing module and a loading mechanism; the loading mechanism comprises a transfer disk, a standard force sensor and an electric cylinder; the transfer disk is used for mounting and connecting a calibrated object, one end of the standard force sensor is connected with the transfer disk, and the other end of the standard force sensor is connected withthe electric cylinder; the control module is used for realizing control on expansion amount of the electric cylinder, the electric cylinder outputs a calibration force to the standard force sensor, and the standard force sensor transmits the calibration force to a six-component sensor by virtue of the transfer disk; and a numerical value acquired by the acquisition module unit is transmitted to the storage module to be stored, the storage module transmits the stored data to the data processing module, the data processing module comprises a decoupling module, and the decoupling module performsa decoupling operation on the data.

The invention provides a system and method for optical coupling image acquisition time calibration. The system for optical coupling image acquisition time calibration comprises a system time master control module, a logic control module, a time light generating module, a trigger module, a camera, an image sensor and an image processing module; wherein the system time master control module providesa reference time for the logic control module and the trigger module; the logic control module generates an electrical parameter control signal and a periodic control signal based on the reference time; the time light generating module comprises a light source matrix sub-module and an electrical parameter sub-module; the trigger module generates a trigger signal based on the reference time; the camera forms an optical path, and generates an acquisition control signal after the camera is triggered by the trigger signal; the image sensor is triggered by the acquisition control signal to receivethe optical matrix information and the reflected light of a measured object, so as to obtain a first image; and the image processing module converts the optical matrix information to the image acquisition time information to obtain a second image, wherein the second image is the first image marked the time information. By means of the system and method for optical coupling image acquisition timecalibration, the time that the camera shoots the image can be accurately located in extreme environments.

The invention provides a capacitive touch sensor. A single sensing unit structure of the capacitive touch sensor is triangular, and is composed of an upper polar plate, a lower polar plate and a dielectric layer. The upper polar plate and the lower polar plate are correspondingly arranged; the upper polar plate comprises three first polar plates, the lower polar plate comprises three second polarplates, the first polar plates and the second polar plates are isosceles triangles with vertex angles of 120 degrees, the vertex angles of the three first polar plates are oppositely arranged, top ends of the three second polar plates are connected with one another, and the three first polar plates and the three second polar plates jointly form three independent capacitors; and through a structural arrangement, the number of polar plates and the number of capacitors are reduced, and a measurement circuit is greatly simplified so that accurate measurement and decoupling of a three-dimensional force are realized.

The invention relates to a test instrument and method for evaluating the upheaval risk of a bituminous pavement. The test instrument comprises a left side and a right side. An environment box is arranged on the left side, and a control box is arranged on the right side. An alternating current generator is arranged below the control box. A wind-heat temperature control device and a connecting rod control device are sequentially arranged below the left side of the alternating current generator downwards, and a rail running device, a control system and a laser signal processor are sequentially arranged below the right side of the alternating current generator downwards. An electromagnetic emission device is arranged on the top in the environment box, rails are arranged on the two side walls, and a test mold for containing a sample is arranged at the bottom. The two rails are provided with scale marks, one rail is connected with a laser emitter, and the other rail is connected with a laser receiver. Four temperature sensors are arranged on the two sides of the two rails in total. An infrared thermal imager is arranged below the temperature sensor D and connected with the inner side wall of the environment box through an angle adjusting device. Compared with the prior art, the test instrument and method are easy and convenient to operate and rapid in measurement, and the induction heating process is easy to control.

The utility model relates to a laser backscattering measurement device of a high reflection mirror, which belongs to the field of laser gyroscope testing. Split the laser light, detect the reflected light in real time to obtain the fluctuation information of the laser power, and send it to the differential end of the lock-in amplifier to deduct the influence of the light source fluctuation on the measured value; after the transmitted light is modulated and the optical components are adjusted, it is incident at an adjustable angle When it reaches the surface of the high reflector to be tested, the reflected light is absorbed by the light trap, and the backscattered light with the incident light as the optical axis is collected by the integrating sphere through a small hole solid angle, and converted into an electrical signal and sent to the differential end of the lock-in amplifier The second is sent to the computer through lock-in amplification processing. The measured sample moves with the computer-controlled electric console to complete the measurement of backscattered light intensity at different points, and obtains a two-dimensional distribution map. The problem of difficult measurement of weak backscattered light intensity is solved. It realizes the accurate measurement and automatic measurement of laser backscattering of high reflective mirrors, and can also measure the backscattering of high reflective mirrors or ultra-smooth surfaces for other purposes. It can be widely used in laser gyroscope production and scientific research.

The invention relates to a mixed gas photoacoustic spectrum recognition method and device based on deep learning, and the method comprises the steps: obtaining the photoacoustic spectrums of a plurality of mixed gases, and recording the photoacoustic spectrums as first photoacoustic spectrums; sequentially performing Fourier deconvolution and bilateral filtering on the plurality of first photoacoustic spectra to obtain a plurality of second photoacoustic spectra; carrying out peak division on the second photoacoustic spectra by utilizing a derivative method, and then extracting waveform characteristics and gas characteristic information of each waveband; constructing a multi-dimensional vector by utilizing the waveform characteristics and the gas information, and constructing a sample dataset; and training a target recognition neural network by using the sample data set, and inputting a photoacoustic spectrum to be recognized into the trained target recognition neural network to obtain recognition information. According to the method, a traditional filtering method and a derivative method are combined to perform peak division on overlapped peaks, then the target recognition neuralnetwork is utilized to recognize the photoacoustic spectrum, the recognition speed is high, the cost is low, and the stability is good.

The invention provides a network link measurement method and device and relates to the field of communication technology. The network link measurement method is applied to terminal equipment, and theterminal equipment is in communication connection with network equipment in a communication network. The method comprises the following steps: acquiring attribute information of a link between two network equipment in the communication network; acquiring corresponding equipment attribute information of the two network equipment, wherein the equipment attribute information comprises environment parameters corresponding to the two network equipment and / or the equipment attribute information of the two network equipment; and carrying out weighting operation on the attribute information of the link and the equipment attribute information according to measurement weighting parameters configured by a network manager, thus measurement data of the link between the two network equipment is obtained. The network link measurement method and device which are provided by the invention can realize accurate measurement on a network link, so that the measurement data of the link can be taken as a basis for accurately finding out an optimal path or carrying out statistics, prediction, optimization and audit on network communication quality in a follow-up network link computing process.

Belonging to the technical field of asphalt performance testing, the invention in particular relates to an instrument and method for measuring the volume change of an asphalt mixture test piece during induction heating. The instrument comprises an electromagnetic emission device, telescopic conductive connecting rods, a temperature sensor A, a temperature sensor B, a temperature sensor C, a temperature sensor D, a temperature sensor E, camera positioning devices, cameras, scale, a test piece 11, patches, fixation rods, an interface, a screen, a control keyboard, an alternating-current generator, an image analysis device, a wind-heat temperature control device, a connecting rod control device, an image acquisition device control system, a control cabinet, a controller, an environmental cabinet and a telescopic rod. Compared with the prior art, the instrument provided by the invention has the advantages of simple structure, convenient operation, and good use effect, and can simply and rapidly measure the volume change condition of the asphalt mixture test piece during induction heating. Also, the induction heating process is easy to control.

The invention discloses a cloth tailoring device with a measuring function for garment producing and processing. The cloth tailoring device comprises a side plate, cloth, a fixed shaft and a cutting head, fixed plates are welded to the front end and the rear end of the right side of the side plate, the fixed plates are connected through a movable plate, and the front side and the rear side of themovable plate are fixed to the fixed plates through rotary connectors respectively. The cloth is arranged above the movable plate, limiting plates are fixed above the front end and the rear end of thecloth, the upper portions of the limiting plates are rotationally connected with movable shafts, sliding blocks are fixed to the front end and the rear end of the fixed shaft, the outer sides of thesliding blocks are connected with pointers, scale marks are arranged below the pointers, the upper portion of the cutting head is connected with a movable part through a sleeve, and the movable part is in sliding connection with the fixed shaft through a second sliding groove. According to the cloth tailoring device with the measuring function for garment producing and processing, the cloth can bemeasured firstly before the cloth is tailored, and the precision of the device is improved.

The invention discloses a three-phase reactive power measuring and crosstalk compensating method for an electric energy metering chip. The method comprises the following steps of calculating each single-phase reactive power; compensating each single-phase reactive power, so as to obtain the compensated single-phase reactive power; carrying out small-signal detection, and according to the detection result, selecting the single-phase reactive power or the compensated single-phase reactive power to calculate the total reactive power; and carrying out inverse compensation on the total reactive power. The method has the advantages that the accurate measuring of the three-phase reactive power is realized; and the problem of calculation error of the reactive power caused by the easy influence of crosstalk noise on the small signal in the electric energy metering chip is solved.

The invention relates to a display equipment evaluation technology, aims to solve the problems in the conventional naked eye recognition and evaluation scheme such as poor accuracy, lower efficiency, etc., and provides a display equipment evaluation system and a display equipment evaluation method. The display equipment evaluation system comprises a mechanical arm, a sensor and a control unit, and is used for controlling the collection terminal of the mechanical arm to move to the appointed to-be-detected area subject to preset location parameters, controlling the sensor to collect the display parameter values to generate a display parameter value assembly, calculating a comprehensive evaluation value according to the display parameter value assembly and a corresponding weight assembly, then the difference value between the comprehensive evaluation value and corresponding standard evaluation value of the application type, and outputting the application type corresponding to a minimum difference value. The invention also provides a display equipment evaluation method. By adopting the technical scheme, accurate evaluation to the display equipment can be realized; besides, the technical scheme provided by the invention can be fully automatically realized, so that the invention is very suitable for executing batch evaluation tasks of the display equipment.

The invention discloses an aluminum alloy sheet testing system. The aluminum alloy sheet testing system comprises a heating module, a cooling module and a stretching device, wherein a clamping part inthe stretching device clamps an aluminum alloy sheet to be tested, the aluminum alloy sheet is firstly moved to the heating module to be heated, then the aluminum alloy sheet is moved to the coolingmodule to be cooled, and the aluminum alloy sheet is stretched and loaded by the stretching device. The aluminum alloy sheet testing system has the main beneficial effects that the structure is simpleand compact, the temperature control module is integrated on a common tensile testing machine, aluminum alloy high-temperature deformation behavior testing under a complex process path is achieved, sample clamping is convenient, temperature data and strain data are reliable, and the testing efficiency is improved. According to the method, the temperature uniformity in the scale distance section of the sample is improved in a contact heating mode, the heating efficiency of the sample is improved, and the purpose of testing deformation and fracture behaviors related to the temperature and the strain rate under the aluminum alloy hot stamping condition is achieved.

The invention discloses an accurate facial paralysis degree evaluation method and device based on H-B grading under CV. The method comprises the following steps: establishing a facial paralysis key point detection model; acquiring to-be-detected data and processing the to-be-detected data; sequentially inputting an expression-free natural state static image, a sequence image I, a sequence image II, a sequence image III and a sequence image IV into the facial paralysis key point detection model to output a plurality of corresponding groups of face shapes, and updating the plurality of groups offace shapes; evaluating the facial paralysis degree of the to-be-detected user; calculating theta1, theta2, theta3, theta4, theta5, theta6, theta7, theta8, theta9, theta10 and theta11 and comparing the theta1, theta2, theta3, theta4, theta5, theta6, theta7, theta8, theta9, theta10 and theta11 with thresholds; and judging the facial paralysis degree of the to-be-detected user through the comparison result, and calculating a facial paralysis index. According to the invention, the detection model has high detection positioning precision, the precision and accuracy of comprehensive evaluation anddetection of the facial paralysis degree of the to-be-detected user are greatly improved, and a powerful support is provided for prevention, discovery and treatment of facial paralysis patients.

The invention provides a method and system for determining the size of an esophageal cancer hypovascular are, relates to the technical field of medical assistance, and solves the problem that accurate measurement of the hypovascular area is lacked at present, and the method comprises the following steps: obtaining an esophageal cancer dyeing magnified image and a hypovascular area image in the esophageal cancer dyeing magnified image; determining a plurality of different types of quantitative characterization values of the hypovascular area image according to the hypovascular area image; and according to the plurality of different types of quantitative characterization values, determining a final quantized value of the size of the hypovascular area and a size result of the hypovascular area. According to the method and the device, the multiple different types of quantitative characterization values are obtained by quantifying the vascularization region image, and the final quantized value of the vascularization region size and the vascularization region size result are obtained according to the multiple quantitative characterization values, so that the identification and accurate measurement of the vascularization region size of the esophageal cancer in the endoscope of the esophageal cancer dyed and amplified image are realized, and an endoscopic physician is effectively assisted in predicting the esophageal cancer depth.

The invention relates to a high / low-temperature complex atmosphere environment loading device, and belongs to the field of high / low-temperature mechanical property testing of materials. The device comprises a vacuum / inert atmosphere environment construction unit, a high-temperature environment construction unit and a low-temperature environment construction unit, the vacuum / inert atmosphere environment construction unit is in rigid connection with an external mounting platform through a base and is matched with an external guide rail through rolling wheels, and free movement of the whole device in the direction of the guide rail is achieved; the high-temperature environment construction unit is connected with the front fixing assembly and the rear fixing assembly through connecting rods; and the low-temperature environment construction unit is connected with the front fixing assembly and the rear fixing assembly through refrigerant pipes I-IV. The device has the advantages that varioushigh-resolution in-situ imaging devices can be flexibly integrated, and in-situ monitoring of the macro-micro morphology of the surface of a tested material sample is achieved; one or more kinds of mechanical loading equipment can be integrated, and loading of single and composite loads of a tested material sample is achieved; a vacuum / inert atmosphere assembly can be integrated, and constructionof a vacuum / inert atmosphere environment is achieved.

The invention relates to a pulse per second generating device and method and a measuring system and method of a digital clock and belongs to the field of digital clock metering. A photoelectric diodeis used for detecting a second-bit nixie tube of a digital clock, multiple paths of detection signals are amplified through an amplification circuit to obtain voltage signals, TTL level signals are output after the voltage signals are compared with preset voltage, and the TTL level signals are sent to a pulse generation circuit directly or after being inverted through an inverter to generate pulsesignals. And finally, OR operation is conducted through a second pulse synthesis circuit to generate a second pulse signal of a digital clock, a reference time signal generated by a reference time frequency source is taken as a starting signal, the second pulse signal is taken as a stopping signal, and a time interval error between the starting signal and the stopping signal is measured; and thus, accurate measurement and calibration of the digital clock are realized.

The invention provides a signal analyzer with a high-precision calibration function and a high-precision calibration method thereof, and the signal analyzer comprises a calibration module which employs a digital scheme and is used for outputting a broadband calibration signal, and the broadband calibration signal is a signal with a uniform frequency interval and a target phase; the radio frequency front end is connected with the calibration module and is used for performing amplification, attenuation, filtering and initial frequency conversion on the broadband calibration signal and outputting a target signal; the intermediate frequency module is connected with the radio frequency front end and is used for performing frequency conversion processing on the target signal for multiple times and outputting a target digital signal of a target frequency; and the digital processing module is connected with the intermediate frequency module, the digital processing module is used for carrying out digital down-conversion processing and fast Fourier transform processing on the target digital signal to obtain a target frequency domain signal, and the target frequency domain signal is used for determining a frequency response curve of the signal analyzer. The signal analyzer can realize high-precision calibration.

The invention relates to a device, which carries out a simulated experiment for space gravitational biology in a large gradient and intense magnetic field. A superconducting magnet can be fixed on a horizontal ground, and a temperature-controlled water gall can be inserted vertically into the columnar cavum which is arranged in the middle of the superconducting magnet. The bottom of the lifter carrier is positioned in the bottom of the superconducting magnet. The tray of the lifter carrier is inserted into the columnar cavum of the superconducting magnet with the temperature-controlled gall. The data monitoring plant is installed at the bottom of the lifter carrier, and the lifter carrier is connected with a data display device by leads. The ends of the cavum of the superconducting magnet are respectively sealed by the closing plug of the gas control equipment. A CCD videography is positioned in the center of the ring-shaped illuminating ray. The two insert into the cavum synchronously and are positioned above the tray. The device provided by the invention can achieve the precise measurement and control of temperature, humidity, model position, gravity standard, magnetic density and other aggregative indicators. The device can meet the requirements of the simulated experiment condition relating to space life sciences within the range from molecules, cells, tissues, organs to the overall level.

The invention discloses an accurate facial paralysis degree evaluation method and device based on facial feature points. The method includes: establishing a facial paralysis key point detection model; acquiring data to be detected and processing the data to be detected; inputting the expressionless natural state static image, sequence image 1, sequence image 2, sequence image 3 and sequence image 4 in sequence to the facial paralysis key In the point detection model, the corresponding multiple sets of face shapes are output, and multiple sets of face shapes are updated; the degree of facial paralysis of the user to be detected is evaluated: calculate θ 1 , θ 2 , θ 3 , θ 4 , θ 5 , θ 6 , θ 7 , θ 8 , θ 9 , θ 10 And compare with their thresholds respectively; judge the degree of facial paralysis of the user to be detected by comparing the results, and calculate the facial paralysis index. The invention can make the detection model have higher detection and positioning accuracy, greatly improve the comprehensive evaluation and detection accuracy and accuracy of the facial paralysis degree of the user to be detected, and provide strong support for the prevention, discovery and treatment of facial paralysis patients.

The invention provides a single-pulse multi-target super-resolution angle measurement implementation method based on a sparse array radar. The method comprises the steps of: performing one-dimensional range profile constant false alarm detection on target echo signals of multiple channels of a monopulse sparse array radar to obtain array signals of distance units where each target is located, and constructing angle observation vectors of the targets according to the array signals of the distance units where the targets are located; constructing an angle measurement dictionary matrix by using the working parameters of a sparse array radar system, and constructing an angle observation matrix according to the angle measurement dictionary matrix and the working parameters of the sparse array radar; and based on the angle observation vector and the angle observation matrix of the target, performing reconstruction imaging on the phase delay vectors of different targets by using an optimization algorithm to realize multi-target super-resolution and angle measurement of the target echo signals. According to the method, angle resolution and accurate measurement can be carried out on the plurality of targets with similar distances and angles in beams from radar monopulse echo data.

The invention discloses a vibration blunt depth measuring device, belongs to the field of engineering construction, and provides a vibration blunt depth measuring device capable of measuring the depth of a vibration blunt quantitatively. The vibration blunt depth measuring device comprises a mounting seat, a supporting rod, a wheel and a rotary encoder module, wherein one end of the supporting rod is arranged on the mounting seat; the other end of the supporting rod is provided with a mounting rack; the wheel is rotatably arranged on the mounting rack through a rotating shaft; and the rotary encoder module is arranged on the mounting rack and is connected with the rotating shaft through a coupler. The vibration blunt depth measuring device is arranged on corresponding construction equipment, a corresponding mooring rope is meshed in a slot of the wheel, the wheel and the mooring rope cannot slip relatively, the mooring rope moves so as to drive the wheel to rotate, the rotating angle of the wheel is obtained through the rotary encoder module, the movement distance of the mooring rope is obtained, and a measuring value of the depth of the vibration blunt can be obtained.