159 results about "Continuous measurement" patented technology

The invention provides a railway bridge line beam eccentricity measuring method, which at least comprises the following steps of: acquiring position information of a bridge guardrail by adopting a radar module, and adjusting the height position of a laser ranging module according to the position information, so that the laser ranging module can detect the bridge guardrail for ranging; the laser ranging module is adopted to measure the distances between the first steel rail and the bridge guardrails on the two sides of the first steel rail at the same time, and the eccentric distance is calculated according to the distance parameters measured by the laser ranging module and the track gauge of the track. The invention provides a device for measuring the eccentricity of the railway bridge line beam. The measuring device is applied to the method for measuring the eccentricity of the railway bridge line beam. The method has the beneficial effect that the eccentric distance along the track can be automatically and continuously measured.

The invention discloses a gradient thermocouple liquid level real-time detector, and relates to the technical field of liquid level detection, an integrated gradient thermocouple probe rod structure is adopted, a plurality of groups of thermocouple nodes are integrated on a single corrosion-resistant alloy integrated gradient thermocouple probe rod according to a preset interval through a special process, and a continuous temperature gradient sensitive area is formed. A high-precision signal processing circuit is embedded in the integrated gradient thermocouple probe rod, the temperature difference potential of each node is collected in real time, the liquid level height is calculated based on a dynamic temperature field modeling algorithm, and full-scale continuous measurement is achieved. Gradient node distributed layout is created for the first time, and a blind area of traditional point type measurement is eliminated; a self-adaptive temperature compensation mechanism is developed, and medium layering and boiling interference are overcome; the integrated gradient thermocouple probe rod adopts vacuum sealing and a nanometer heat insulation coating, and can resist a high temperature of 600 DEG C and a high pressure environment of 40 MPa. The device has millimeter-level measurement precision and millisecond-level dynamic response capability, does not need to move parts or external radiation sources, and remarkably improves the reliability, safety and installation convenience of liquid level monitoring of industrial reaction kettles and high-pressure boilers under extreme working conditions.

A radar level measuring device is provided, the device being configured to perform a measurement for determining a level of a filling material by a frequency modulated continuous wave measurement method, the radar level measuring device including: a transmitting device configured to transmit a radar signal in a direction of a filling material surface to perform the measurement; a receiving device configured to receive the radar signal reflected from the filling material surface and to evaluate the measurement; a control device configured to control the transmitting device and the receiving device; and a selection device configured to select a parameter set for controlling the transmitting device and the receiving device, the parameter set including at least a measurement duration of the measurement, a minimum measurement frequency and a maximum measurement frequency of the measurement, and a number of consecutive measurements.

The invention relates to the technical field of geological disaster monitoring, and discloses an unmanned aerial vehicle aerial survey intelligent identification and grading method and system for geological disaster hidden danger points, and the method comprises the steps: converting a pixel-level identification result into hierarchical data which retains a spatial topological structure through constructing a confidence quad-tree; establishing a weighted decision grid based on aerial survey parameters to realize coupling modeling of observation conditions and confidence uncertainty, calculating topology difference to generate a spatial difference field to quantify the deviation degree of a confidence field and a standard grading decision surface, and finally executing self-adaptive grading judgment to output a risk grade result with a confidence label; according to the method, the problem of confidence field and decision boundary space topology mismatch caused by truncation of confidence continuous measurement information in a grading stage in a traditional serial architecture is solved, systematic underestimation of misjudgment risks in observation condition limited areas such as alpine and gorge areas is avoided, and consistency of actual credibility of a risk quantification result and a nominal grade is realized.

The invention relates to the technical field of breathing machine off-line evaluation, in particular to a breathing machine intelligent off-line evaluation system based on multiple parameters, which is characterized in that a data acquisition unit acquires breathing and physiological parameters of a patient in real time; the data analysis unit extracts a respiratory rate instantaneous value and a blood oxygen saturation continuous measurement value through preprocessing, inputs the respiratory rate instantaneous value and the blood oxygen saturation continuous measurement value into an intelligent analysis model composed of a deep residual network and a time convolution network, fuses a physiological hysteresis compensation coefficient to generate an offline index, and outputs a preliminary offline risk index; the data processing unit is embedded into a clinical rule base through a decision tree algorithm, generates a risk correction factor through a taboo check factor, allocates differentiation weights according to severity levels, corrects initial risk deviation and generates a comprehensive offline risk index, and the clinical rule base is continuously optimized through online learning, so that the offline risk assessment accuracy is improved; and a reliable basis is provided for clinical decision-making.

The invention discloses a deep stratum three-dimensional in-situ crustal stress continuous measurement device and method, and belongs to the technical field of crustal stress measurement. The device comprises a shell, wherein a plurality of cameras, a plurality of water jet heads, an image acquisition module, a water jet supply module and a data transmission module are connected in the shell; the cameras are arranged in the circumferential direction and used for shooting images of the periphery of the shell, the water jet cutter heads are arranged on the shell corresponding to the cameras, the cameras are electrically connected with the image acquisition module, the image acquisition module is electrically connected with the data transmission module, and the water jet cutter heads communicate with the water jet cutter supply module. The device can be used for continuously monitoring the ground stress, can be used under complex geological conditions, is simple and convenient to operate and high in efficiency, and greatly reduces the test cost and time investment.

A temperature measurement device (1) comprises: a light emission unit (10) that generates coherent, continuous measurement-light; a light detection unit (30) that detects reflected light or transmitted light of the continuous measurement-light which is projected onto a sample (50) to be measured; and an analysis unit (42) that calculates a temperature distribution of the sample (50) to be measured on the basis of the intensity of the reflected light or the transmitted light detected by the light detection unit (30). The analysis unit (42) calculates the optical thickness of the sample (50) to be measured from a temporal change in the intensity of the reflected light or the transmitted light and, by using a refractive index distribution model representing the relationship between the optical thickness and a refractive index distribution in the thickness direction of the sample (50) to be measured at the time of a temperature change, calculates the refractive index distribution from the optical thickness, and calculates the temperature distribution of the sample (50) to be measured by converting the refractive index distribution into the temperature distribution on the basis of the thermo-optical coefficient of the sample (50) to be measured.

An aspect of this disclosure includes a method performed by a mobile device,. The method includes receiving, from an access network node, information for configuring continuous measurements across a plurality of a Radio Resource Control (RRC) states of the mobile device, performing the continuous measurements in one or more of the plurality of the RRC states, based on the information for configuring the continuous measurements across the plurality of the RRC states of the mobile device; and,transmitting, to the access network node, respective measurement reports corresponding to the one or more of the plurality of the RRC states, the respective measurement reports including information for tracing a process of the continuous measurements across the plurality of the RRC states.

The invention relates to the technical field of ore pulp concentration detection, in particular to a continuous detection type ore pulp concentration detection device which comprises a detection shell, a knocking block arranged at the bottom of the detection shell, a vibration sensor arranged in the detection shell, a processing unit arranged in the detection shell, and supporting legs fixedly installed on the left side and the right side of the detection shell. A metal strap is installed on one side of each supporting leg, a buckle is arranged on each supporting leg, a plurality of clamping grooves are evenly formed in each metal strap, an electric guide rail is installed on each supporting leg, a chuck is installed on a sliding block of each electric guide rail, and a pressure sensor is installed at the bottom of each supporting leg. The pressure sensors and the electric guide rails are arranged on the supporting legs, so that an intelligent sensor system is formed, the electric guide rails automatically tension the metal strap when the metal strap is loosened, the situation that the detection shell and the pipeline cannot be stably connected due to loosening of the metal strap is avoided, and the detection precision and the use stability of equipment are effectively guaranteed.

The application discloses a kind of automatic monitoring device and method of tree trunk radial growth, it is related to measurement technical field, device includes: electric rotating platform, laser ranging sensor, data processing equipment and support platform;Electric rotating platform drives laser ranging sensor to rotate a week, and laser ranging sensor determines the distance of all sheltering objects to sensor in real time;Data processing equipment receives the real-time ranging data sent by laser ranging sensor;After measuring a circle, the ranging data of current ranging data set is clustered, and a plurality of ranging data clusters are obtained;Right-angle coordinate modeling and circle fitting are carried out on each ranging data cluster, to determine the position and diameter of each tree trunk;Through the diameter of tree trunk obtained by continuous measurement at different times, the radial growth rate of tree trunk is calculated. By implementing the present application, the growth rate of multiple tree trunks can be measured automatically in a non-contact form, solving the problem of contact measurement affecting tree growth and only single measurement in the prior art.

The invention relates to a ship water gauge measurement method, a ship water gauge measurement system and a medium, and the method comprises the steps: collecting a video of a ship entering a port water area, and carrying out the target ship recognition detection of the ship video, so as to obtain a target ship cutting image frame sequence entering a preset region; performing water gauge area positioning detection on each frame of image in the target ship cutting image frame sequence to obtain a water gauge area image of the corresponding frame, and performing multi-target element synchronous detection on each water gauge area image to obtain a multi-target element detection result of the corresponding water gauge area image; and performing fusion processing on the multi-target element detection result of each water gauge area image to obtain a ship water gauge measurement result of the corresponding target ship, and finally processing all the obtained ship water gauge measurement results to obtain a current ship water gauge measurement result of the target ship. In this way, automatic and continuous measurement of the water gauge of the ship driving into the port water area is achieved, and the ship water gauge measurement precision and accuracy are improved.

The invention belongs to the technical field of large-size industrial measurement positioning, and particularly relates to a visual measurement positioning system and method based on environment structured information. The system comprises an intelligent sensing hardware layer, an environment structured feature library and a core processing and control unit. Through an intelligent perception hardware layer, agreement positioning of laser coarse positioning-visual fine positioning is realized, and in combination with natural feature points and auxiliary calibration objects included in an environment structured feature library, image processing, deep learning identification, feature extraction matching and multi-view geometric calculation are carried out. Obtaining a three-dimensional coordinate of a target feature point of the to-be-detected target in the global coordinate system; and dynamic calibration and intelligent scheduling of the camera are carried out through the intelligent scheduling and calibration module, so that continuous measurement of the to-be-measured target is realized. According to the invention, the environment structured information of the measurement field is converted from background to available perception assets, and high-precision, high-efficiency and high-robustness visual measurement positioning in a large-scale dynamic industrial scene is realized.

The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method, device, computer equipment and product, it is related to road engineering detection technical field.The application discloses a kind of road friction coefficient continuous measurement method

The invention discloses a borehole cleaning monitoring method and device based on a walking type continuous measurement mode, and the method comprises the steps: putting a first batch of microchip capsules when drilling is not carried out, and circularly collecting the pressure data of a completely-cleaned well section along with drilling fluid as a reference; after drilling operation is started, a second batch of microchip capsules are put, and actually-measured pressure data of the rock debris-containing well section are collected; calibrating the hydraulic model based on the reference pressure data, calculating a theoretical pressure gradient, and calculating an actually measured pressure gradient; and based on the difference between the theoretical pressure gradient and the actually measured pressure gradient, the rock debris volume concentration distribution in the shaft is obtained through inversion of a pressure-driven model. According to the invention, an expensive intelligent drill rod is replaced by the microchip capsule which is low in cost and can be flexibly put, so that the defects that the cost is high, the deployment is limited and continuous dynamic monitoring of a whole well section cannot be realized in the prior art are overcome, and continuous, dynamic and accurate monitoring of the cleaning condition of a well hole is realized.

The invention discloses a laser measurement system for the size of a rubber sealing element, and relates to the technical field of laser measurement, and the system comprises a signal collection module S11 which is used for obtaining distance measurement signal data collected by a laser distance measurement device in a continuous measurement process on the surface of the rubber sealing element, the ranging signal data comprises a scanning angle, laser emission time, laser echo receiving time and laser echo intensity; the stable screening module S12 is used for extracting signal segments with continuous angles and emission time intervals lower than a preset interval value according to scanning angles and laser emission time in the ranging signal data, and marking the signal segments as stable scanning segments; according to the method, through synchronous acquisition of distance measurement signal data, stable screening of credible signal fragments and high-precision fitting of radial dimension data, accurate reconstruction of the target contour dimension of the rubber sealing element and improvement of dimension consistency judgment capability are realized.

The utility model discloses a movable multi-point dimension stone paving elevation measuring device, which relates to the field of road construction measurement, and is characterized in that a gradienter is arranged on a first cross rod to calibrate the levelness and the transverse gradient of a measuring trolley frame, and a range finder is arranged on a second cross rod parallel to the first cross rod to detect the distance between the second cross rod and the bottom of a support leg; the length direction of the left supporting leg and the length direction of the right supporting leg are perpendicular to the length direction of the first transverse rod, so that the distance between the left supporting leg and the ground can be rapidly measured, and the paving elevation of a plurality of rubbles on the same plane of a rubble pavement can be rapidly, simply and continuously measured and displayed; elevation data of block stone paving are measured and fed back in real time to guide workers to adjust the block stones to the designed height, and the elevation adjustment efficiency and measurement precision of the construction paving block stones are improved.

The invention discloses an integrated mobile VS30 measuring device, a design method and a measuring method, and belongs to the field of geological prospecting. The integrated mobile VS30 measuring device comprises a mobile seismic source vehicle and a mobile measuring array which is in traction connection with the mobile seismic source vehicle through a land towing cable; the mobile measurement array is composed of a plurality of node seismographs which are uniformly arranged on a land towing cable and are slidably coupled with the ground, and the node seismographs are communicated with a master control terminal carried on the mobile seismic source vehicle. By adopting the integrated mobile VS30 measuring device, the design method and the measuring method, rapid and continuous measurement can be realized through mobile seismic source vehicle-towing cable-node type earthquake, and meanwhile, the measurement precision and reliability are ensured by utilizing the joint inversion of GLM-XGBoost (improving the nonlinear fitting precision), so that the engineering requirements of urban site classification, evaluation and the like are comprehensively met.

To provide an all-inclusive single-use continuous analyte measurement system.SOLUTION: An automatic insertion module includes: an applicator housing; a deployment button; and a preloaded insertion assembly that is fully disposed and secured within the button and partially disposed within the applicator housing when the button is in an initial mounted position in the applicator housing. A sensor module includes: a sensor lower housing releasably connected to the applicator housing; a sensor upper housing removably retained in an insertion assembly housing and spaced apart from the sensor lower housing, and an electrical sensor assembly disposed in the sensor upper housing. When an applicator system is in an initial, preloaded position, the sensor is temporarily disposed within a needle of a needle assembly.SELECTED DRAWING: Figure 1

The invention discloses a measurement task scheduling method for a quality robot system, and the method comprises the steps: carrying out the modeling of the measurement time of a detection delegation order of a to-be-planned batch, and obtaining a time model consumed by a measurement task; constructing an objective function based on the expected complete inspection time, the measurement time model and the certificate time model, and constructing a 0-1 integer programming model of the measurement task by taking the tray number of the weight tray rack and the maximum measurement time as constraint conditions and the complete inspection remaining time as weak constraints; and inputting a batch detection delegation list to be planned into the integer programming model to obtain a scheduling result. Measurement tasks are optimized under the constraint conditions of the number of weight trays, the maximum total measurement time and the like, the measurement capacity of a mass robot system is fully utilized, cooperation of automatic measurement time and on-off time of detection personnel is achieved, the automatic measurement system continues to carry out continuous measurement work at night, and the work efficiency is improved. And the utilization rate of the quality robot system can be effectively improved.

This application provides an automatic continuous measurement method for the flowability of filler materials, comprising the following steps: Step S1, connecting the continuous measurement equipment, including: a first branch and a second branch connected in parallel; a third branch simultaneously connected to the ends of the first and second branches; Step S2, powder preparation; Step S3, automatic batching and slurry preparation, including adjusting the pipeline status, the pipeline status including: slurry preparation mode; water addition mode; and slurry discharge mode; Step S4, leveling work using the automatic flowability measurement device; Step S5, automatic sampling using the automatic flowability measurement device; Step S6, automatic flowability measurement; Step S7, cleaning and resetting the test plate; Step S8, cleaning the pipeline and the continuous measurement equipment. The automatic continuous flowability measurement method involved in this application can achieve high-frequency and accurate monitoring of flowability under long-distance, high-temperature conditions, and its slurry pipeline design can significantly improve the efficiency of multi-ratio tests, meeting the needs of large-scale laboratory testing.

The present invention relates to design improvements to reflective and transmissive photoplethysmography (PPG) devices to reduce motion artifacts, avoid false and non-physiological baseline drift in the signal, and improve signal quality and the accuracy of various indicators derived from the PPG. The invention can improve the accuracy of all PPG driven parameter estimations, such as continuous measurements of oxyhemoglobin saturation (SpO2), heart rate, heart rate variability, respiratory rate, blood pressure, and arterial pulse wave volume (i.e., peripheral arterial tension measurements and arterial pulse tension measurements). The invention also incorporates the ability to measure and / or track and / or compensate for the variation or absolute value of the applied pressure between the sensor and the surface of the biological subject, which is applicable to all sensors or associated probes.

The application provides a ship water gauge video tracking method based on tide level data and related equipment, and relates to the technical field of ship water gauge measurement. In the prior art, because the installation position of a shore camera device is usually fixed and the distance between the camera device and a ship is relatively short, dynamic changes can easily cause the water gauge intersection point to move out of the field of view of a video monitoring picture, thereby destroying the continuity of video observation and making continuous measurement based on video impossible. The application ensures that the water gauge intersection point with the water edge line is always in the video monitoring picture by acquiring tide level data in real time and dynamically adjusting the focal length, pitch angle and azimuth angle of the camera device, and has the advantages of realizing continuous video monitoring, improving measurement accuracy and not needing to interrupt loading and unloading operations.

The present application provides a kind of vertical shaft cage ear gap detection device and method, mainly include: first ranging column, first ranging sensor, second ranging column and second ranging sensor.First ranging sensor is arranged on the first ranging column, and first ranging sensor is used to measure the distance from the first ranging column to cage ear;Second ranging sensor is arranged on the second ranging column to measure the distance from the second ranging column to cage way.Through respectively to cage way and cage ear are measured, then again the measured measurement data is calculated, it is obtained whether the gap value between cage way and cage ear is in safe range, so that the result measured is more accurate, avoid the problem that the measurement result is not accurate caused by traditional direct measurement gap between cage ear and cage way, and continuous measurement is used to ranging sensor, and all time periods are continuously measured during cage operation.The problem of low measurement precision and low automation degree of traditional gap measurement technology is solved.

The invention relates to an automatic vehicle tire inflation and deflation method and device based on a tire temperature model, and aims to solve the problem of insufficient air pressure regulation and control caused by neglecting temperature change in the prior art. According to the method, the ideal tire pressure is dynamically calculated through the ideal gas law based on the current tire temperature, pressure and atmospheric pressure data and the tire material thermal expansion coefficient; the current air pressure is compared with the ideal air pressure in real time, and when the difference value exceeds a preset threshold value, inflation or deflation operation is automatically executed. The control module integrates a load correction function, can adjust an ideal air pressure reference according to a vehicle load, identifies a low-pressure high-rolling-resistance state by monitoring a tire temperature change rate so as to preferentially inflate, and supports fault detection when continuous measurement is abnormal. According to the invention, the self-adaptive precise regulation and control of the tire pressure are realized, the tire burst risk caused by overhigh air pressure in plateau or high-speed driving is effectively avoided, the rolling resistance is reduced, the tire wear is reduced, and the vehicle driving safety, the fuel economy and the tire durability are improved.

The application belongs to the technical field of tunnel testing, and discloses a ventilation tunnel air volume and local heat exchange parameter testing device and a testing method thereof. The testing device comprises a sensor unit and a central processing unit. The sensor unit comprises a sensor, an acquisition module, a wireless communication module and a power module. The central processing unit comprises a wireless communication module, a data processing module, a data storage module, a touch screen and a power module. The sensor unit is installed on the same section of the tunnel according to a certain number and rule. The application has the following technical effects: long-period continuous measurement of tunnel ventilation parameters is realized; the accuracy and stability of the tunnel ventilation parameter measurement value are ensured; the tunnel use is not affected, and the vehicle is allowed to pass; and the uncertainty of temperature measurement at the high position of the tunnel wall is reduced.

The invention provides a sealed liquid flash continuous measurement device which comprises a detector, a shielding main body, a sealing mechanism and a charging mechanism. A shading piston of the sealing mechanism can shade light from a communication port for communicating an accommodating cavity for accommodating a detector and a measuring cavity for accommodating a measuring bottle, so that the detector is not easily influenced by an optical signal; in the process that the loading piece drives the measuring bottle to push away the shading piston to reach the communication port, the cover plate is driven by the driving assembly to block the opening, so that external optical signals are not prone to entering from the opening, and the detector is not prone to being affected by the optical signals; in this way, the detector is not prone to being affected by the light signals in the whole process of conducting liquid flash measurement on the to-be-measured sample in the measuring bottle, the detector does not need to stand in the liquid flash measurement process, and the measuring efficiency of the sealed liquid flash continuous measuring device can be improved.

The application discloses a kind of high impact load under spring mass system dynamic response polarized optical measurement system and method, belong to optical measurement technical field, for analog launch load and service load etc. High impact load working condition of spring mass system, by constructing birefringent interference color feature unit on the surface of the base and mass block of spring mass system, using polarization dark field to filter background stray light, cooperate with high-speed camera, so that mass block presents as high-contrast color spot, through HSV color segmentation and relative displacement calculation based on motion coordinate system, the non-contact, clear and continuous measurement of millisecond transient displacement response of mass block is realized.The application effectively fills the experimental measurement blank of high overload dynamics, eliminates the interference of the increased mass caused by the introduction of sensor in contact measurement, and provides high-fidelity visual data support for the dynamic response research of spring mass system in high dynamic environment.

The application discloses an integrated system and method for online observation of stable isotopes of multiple methane emission pathways in rice fields, collects methane gas emitted by plants and non-plant mediation respectively, pre-processes the gas by using a Nafion membrane drying tube and a correction algorithm, realizes continuous measurement of data by using a cavity ring-down spectrum-based analyzer, controls semi-automatic or full-automatic switching of different cavities by using a multi-channel switching and control module, and finally analyzes stable isotope characteristics of plant-mediated and non-plant-mediated emission by using a data processing module combined with a Keeling plot method, so that integrated, continuous and online observation of methane emission pathways in rice fields is realized, and real-time performance, comparability and model verification capability of data are significantly improved.

The application relates to a multi-element track initiation method and system based on a modified Hough transform, and belongs to the technical field of radar information processing. The method comprises the following steps: acquiring all point tracks after point track condensation, selecting three continuous measurement data in a period, performing one-by-one traversal correlation to obtain a to-be-determined track; setting a multi-element constraint condition, screening the to-be-determined track based on the multi-element constraint condition, and retaining the to-be-determined track meeting the screening requirement; removing the to-be-determined tracks that are not collinear based on the Hough transform to obtain the to-be-determined tracks of approximate straight lines in a three-dimensional space; evaluating the confidence degree of track initiation based on the signal-to-noise ratio of the track, determining the track meeting the signal-to-noise ratio threshold condition as an effective track, taking the effective track as a final output, and completing track initiation. On the basis of effectively suppressing false tracks, the application improves the rapid track initiation capability of a target, and simultaneously avoids the problems of large calculation amount and poor real-time performance of a traditional Hough transform algorithm.

The utility model discloses a kind of folding portable multifunctional surveying and setting-out tools for traffic safety facilities construction, including folding main body frame, distance measuring module, horizontal detection module, fixed-point identification module, data record storage module and control assembly;Folding main body frame contains handheld section and measuring section, and it is reduced to accommodate volume by collapsible connecting structure;Distance measuring module is equipped with roller and electronic distance measuring unit, and handheld section is equipped with mode control component to switch mode;Horizontal detection module is combined with level principle structure and alarm device;Fixed-point identification module linkage distance automatic marking and accurate identification key parts are measured;Control assembly contains antiskid and distance measuring locking component, and it is guaranteed to hold steady and fixed-point accuracy.This tool is adapted to marking line, contour mark, protruding road sign, 100-meter plate construction scene, and continuous measurement and identification can be completed in walking, improve portability, efficiency and accuracy, facilitate data traceability, meet efficient construction demand.