5085 results about "Measuring equipment" patented technology

Locator systems are disclosed for locating buried utilities such as conduits, cables, pipes. or wires. The locator system may include image-capturing and position and orientation measuring devices such as magnetic compass, accelerometers, gyros, GPS, and DGPS. The system may associate images captured during the locate process with buried utility position data and the other sensor data. These data and images may be further associated with terrain images from satellites or aerial photography to provide a highly precision map and database of buried utility locations and visual images of the burial site. Information so obtained may be transferred to a hand-held personal communication device, such as a smart phone to show the location of buried utilities in combination with photo-images and / or terrain maps.

The invention discloses a high-current accurate measurement method, which relates to the technical field of current measurement, and comprises the following steps: obtaining multi-dimensional measurement parameters, carrying out preprocessing, constructing an error model to obtain a comprehensive error, and carrying out calculation based on the comprehensive error to obtain a comprehensive feedback value; based on the comprehensive feedback value, utilizing a closed-loop feedback mechanism to dynamically optimize a compensation parameter, and further utilizing the compensation parameter and the comprehensive feedback value to carry out error correction on the measurement current; real-time measurement parameters are obtained through a built-in sensor and a factory calibration reference model, an error model is constructed, the dynamic closed-loop self-calibration function is achieved, dependence on external calibration equipment is not needed, the problems that a traditional measurement method is high in complexity and high in cost are solved, and the method is suitable for integrated application of a high-precision electric energy meter and industrial measurement equipment and has wide application prospects. And meanwhile, the real-time performance and the convenience of measurement are remarkably improved.

The invention relates to the technical field of laser measuring equipment, and discloses laser length measuring equipment for caution light production, which comprises a supporting seat, a rotating table rotationally mounted at the top end of the supporting seat, a laser measuring instrument arranged above the rotating table and a plurality of fixing assemblies arranged on the rotating table, a driving mechanism for driving the rotating table to rotate is arranged on the rotating table; through meshing arrangement of a first bevel gear and a second bevel gear in the synchronous driving assembly and a threaded transmission structure of a driving screw rod and a sliding block, synchronous movement of a clamping plate driven by a plurality of vertical plates is achieved, it is ensured that a warning lamp cover is accurately positioned to the axis position of the detection table, and the detection efficiency is improved. Therefore, the laser measuring instrument can accurately irradiate the center position of the top end of the lampshade, the problem of large measurement data deviation caused by insufficient positioning precision in the prior art is effectively solved, and the detection precision is remarkably improved.

Systems and methods for characterizing a subterranean formation that include a drill bit for drilling a deviated wellbore through the formation and that repeatedly changes direction. Also included is a directional drilling system and measurement equipment to detect a property of the formation. A trajectory control system is operable to: receive a well log; determine a property of the wellbore; segment the well log based on the property; and correlate one of the segments with the well log previous to the segment to determine a matching score for the segment. If the matching score is equal to or greater than a minimum threshold, the segment was taken in the formation and at the same stratigraphical true vertical depth (“STVD”). If the matching score is less than the minimum threshold, the segment was not taken in the formation and not at the same STVD and the STVD is estimated.

The invention discloses a ship mobile energy storage system CAN communication protocol automatic test system and method, and the system comprises a protocol modeling and test configuration module, a simulation node behavior simulation module, a CAN bus interaction and power closed loop module, and a test analysis and result evaluation module. A CAN communication protocol specification of the ship mobile energy storage system and parameters of tested equipment can be obtained, a protocol analysis model and a test configuration file are constructed for format verification and logic consistency verification, meanwhile, a corresponding test case sequence is automatically generated, and the message sending time is controlled to generate a time sequence simulation message flow; and sending the time sequence simulation message flow to the tested equipment, simulating energy interaction behavior acquisition to generate a power feedback data set, testing to obtain a signal consistency deviation and a power execution error to construct a protocol conformity evaluation matrix, and generating a visual test report. According to the invention, the high coverage rate and automatic closed-loop test of the CAN communication protocol can be realized.

The invention is suitable for the technical field of road construction, and provides a roadbed settlement safety monitoring method and system, and the method comprises the steps: obtaining measurement equipment, and obtaining equipment information according to the equipment; obtaining basic information according to the measurement equipment information, obtaining a confidence scoring function according to the basic information, and fusing the equipment measurement results according to the fusion weight coefficient to obtain a fusion result; constructing settlement time sequence data according to a fusion result, constructing an anomaly detection model by combining key change characteristics, if the settlement rate is judged to continuously exceed a set threshold value, performing early warning prompt, and marking the stage as a potential mutation interval; and according to the risk label, a cause tracing suggestion is provided, and according to the identified settlement trend state and the risk level, the scheme of each monitoring point is adjusted, so that the problem that the roadbed settlement process cannot be detected in time in the existing roadbed settlement detection process is solved. And when the settlement exceeds a threshold value, timely discovery and processing cannot be carried out.

A fluid transfer system component for internally measuring fluid density in real- time. The component may be a flange comprising a base having a first face and a second face, a primary fluid passageway extending through the base from the first face to the second face, a secondary fluid passageway extending through the base from the first face to the second face, and an outside wall, a portion of which is configured to operably engage with a measuring device and comprises a third opening. The primary fluid passageway may have a non-circular cross-section allowing the secondary fluid passageway to be parallel to the primary fluid passageway. The third opening may be in fluid communication with the secondary fluid passageway allowing the measurement device to measure fluid data such as fluid density via the secondary fluid passageway.

The invention discloses a convolutional neural network vehicle fuel consumption detection method based on ultrasonic sensors, and relates to the technical field of vehicle fuel consumption detection, and the method comprises the steps: 1, installing a plurality of ultrasonic sensor arrays on a vehicle, and monitoring the liquid level change of a fuel tank through the ultrasonic sensors; step 2, performing normalization processing on data acquired by the ultrasonic sensor, and eliminating differences caused by different measuring devices and measuring environments; and step 3, analyzing the preprocessed data through a convolutional neural network model to obtain the vehicle fuel consumption. According to the convolutional neural network vehicle fuel consumption detection method based on the ultrasonic sensor, the ultrasonic sensor is adopted, non-contact measurement is achieved, mechanical abrasion is reduced, key parameters related to fuel consumption, such as the fuel oil liquid level and the distance from a fuel spray nozzle to a combustion chamber can be accurately measured, and the fuel consumption can be accurately detected through accurate measurement of the parameters. And the actual fuel consumption of the diesel engine can be calculated more accurately.

The invention belongs to the technical field of automatic sailing of unmanned ships, and particularly relates to an automatic sailing temperature-salinity-depth profile observation system and method for mesoscale eddy prediction, the system is arranged on an unmanned ship and connected with an automatic retractable winch, and the system comprises a temperature-salinity-depth probe device arranged at the tail end of an A frame of the automatic retractable winch and used for retracting through the automatic retractable winch; lifting is realized, so that temperature, salinity and depth parameters of seawater with different profiles are measured, and key ocean data are provided for mesoscale eddy prediction; the data is transmitted to a mother ship / shore base end through a remote intelligent navigation control system; and the remote intelligent navigation control system is used for receiving various data and sending the data to the mother ship / shore base end, and controlling the driving process or task process of the automatic winding and unwinding winch, the temperature-salinity-depth probe device and the unmanned ship according to the instruction of the mother ship / shore base end. According to the invention, the laying and recovery of the temperature-salinity-depth profile measuring equipment can be controlled when the ship is sailing, and the laying and recovery of the sailing type temperature-salinity-depth profile measuring equipment can be carried out on the unmanned ship after upgrading and reconstruction.

The invention discloses a radio frequency on-chip test system and a radio frequency on-chip test method. The radio frequency on-chip test system comprises a probe temperature adjusting module, an instantaneous pulse acquisition module, a dynamic compensation module, a thermal isolation module, radio frequency measurement equipment and a bearing platform. Wherein the probe temperature adjusting module is used for independently adjusting the temperature of a probe to a target value; the instantaneous pulse acquisition module is used for transmitting a radio frequency pulse signal and acquiring a radio frequency parameter when the probe is in contact with the normal temperature calibration sheet; the dynamic compensation module dynamically corrects the radio frequency parameters based on the real-time temperature of the probe; the thermal isolation module is used for reducing heat exchange between the probe and the external environment; the radio frequency measuring equipment is used for collecting and analyzing the radio frequency parameters; the bearing platform is used for bearing the normal temperature calibration sheet or the device to be tested. Through the synergistic effect of multiple modules, the problem of test errors caused by temperature fluctuation is effectively solved, and the precision and stability of radio frequency on-chip test are remarkably improved.

The invention provides a real-time network topology and parameter identification method and system for a power distribution system, and the method comprises the steps: collecting the data of a node for installing an intelligent electric meter in a historical power distribution network, and constructing a data set; calculating an admittance matrix, deducing a network topology structure, and preliminarily estimating line parameters; modeling the power grid topology based on a GCN (Graph Convolutional Network), calculating the importance of each node, and iteratively optimizing the placement strategy of the SMD through a loss function; on this basis, SMD data is adopted as the input of a graph neural network GNN, and real-time network topology and parameter identification are carried out on the system; and if the change of the network topology is identified, performing fine adjustment on the pre-trained GNN parameters through a transfer learning method to adapt to a new topological structure, and re-identifying the parameters. According to the method, under the condition of limited measurement equipment, the placement strategy of the measurement equipment can be optimized, and the identification real-time performance and precision of the topology and parameters of the power distribution network are improved.

Disclosed in the present invention are a wind field correction method and system applied to a single-station remote sensing device. The method comprises the following specific steps: S1, acquiring wind field data by means of a data information acquisition apparatus, and obtaining radial wind speed information of a current acquisition point by means of a data processing module; S2, on the basis of the hypothesis of an uniform wind field, using a classical wind speed reconstruction algorithm for inversion to obtain a three-dimensional wind speed vector of the acquisition point; S3, establishing an error model; and S4, on the basis of an error factor β calculated by means of the error model, performing data correction on the three-dimensional wind speed vector of the acquisition point obtained by means of inversion in S2. Compared with the prior art, the present invention provides a high-precision correction method, which can be operated on low-end hardware, and can also be directly installed and operated on hardware of a measurement device, so that measurement results can be corrected in real time, no additional complexity can be brought to users, and costs are reduced; and the present invention is suitable for solving complex system problems when accurate boundary conditions cannot be obtained.

The embodiment of the invention discloses an image acquisition system and method of measurement equipment, and the system comprises a first defocus determination module which is used for determining a first defocus amount of a target object; the second defocusing determination module is used for determining a second defocusing amount of the target object; the first movement control module is used for controlling the measuring objective lens and the target object to move relatively in the first direction according to the first defocusing amount so as to focus the target object for the first time, and controlling the measuring objective lens and the target object to move relatively in the first direction according to the second defocusing amount so as to focus the target object for the second time; the image acquisition module is used for carrying out image acquisition on the target object after the first focusing to generate a first image so as to determine whether the target object is located at a preset position or not; the image acquisition module is used for performing image acquisition on the target object after the second focusing after determining that the target object is located at the preset position to generate a second image; the image acquisition duration of the target object can be reduced, the alignment error measurement efficiency of the target object is improved, and the applicability is high.

The invention provides an electromechanical equipment full-life-cycle management system, and the system comprises an obtaining module which is used for obtaining the current stage of a full life cycle of electromechanical equipment, and determining equipment variable parameters and equipment measurement parameters which need to be monitored at present; the offset module is used for acquiring the running state and the environmental parameters of the electromechanical equipment, and determining a measurement parameter offset value based on the running state and the environmental parameters; offset is carried out on the equipment measurement parameter based on the measurement parameter offset value, and an offset measurement parameter is obtained; the measurement module is used for determining corresponding parameter measurement equipment based on the equipment variable parameters; controlling parameter measurement equipment to measure equipment variable parameters of the electromechanical equipment according to the offset measurement parameters to obtain a parameter set; and the control module is used for analyzing the parameter set and controlling the operation of the electromechanical equipment based on an analysis result. According to the invention, the defects of inaccurate data measurement and resource waste in the current full life cycle management process are overcome.

The invention discloses a high-precision foundation pit support leakage potential measurement system and method, an electrode matrix, an electric field establishment module, a reference electrode, a multi-channel electric signal parallel measurement device and a data processing terminal are arranged in a foundation pit, and the outer side of a non-polarized electrode of the electrode matrix is filled with bentonite slurry; the bentonite slurry can infiltrate the contact part of the non-polarized electrode and a foundation pit soil body so as to change the property of the soil body, so that the contact potential of the electrode matrix and the soil body is controlled, the measurement error is reduced, meanwhile, an ion concentration meter and a temperature sensor are arranged in the non-polarized electrode and the reference electrode of the electrode matrix respectively, and the measurement accuracy is improved. The data processing terminal can correct the potential difference according to the electrode temperature and the ion concentration of the non-polarized electrode and the reference electrode temperature and the reference ion concentration of the reference electrode to calibrate the electrode range caused by the temperature and the ion concentration, so that the real potential difference of the foundation pit is obtained, and the measurement precision is effectively improved. And the accuracy and reliability of a foundation pit leakage detection result are improved.

The invention discloses a transmission housing end face distance measuring device, which relates to the technical field of transmission production equipment and comprises a measuring device rack and a measuring device slidably mounted on the measuring device rack, and a housing base is arranged below the measuring device. The measuring device comprises a mounting frame, a measuring sensor is mounted in the mounting frame, a contact screw mounting plate is movably arranged in the mounting frame, and a contact screw is arranged at the position, corresponding to the measuring sensor, of the contact screw mounting plate. The lower end of the mounting frame is connected with a reference surface contact plate, the contact screw mounting plate is located on the upper side of the reference surface contact plate, the lower side of the contact screw mounting plate is fixedly connected with a third connecting column, and the third connecting column slidably penetrates through the reference surface contact plate and then is connected with a measuring surface contact plate. The device can accurately measure the distance between the two end faces of the transmission housing, is high in measurement precision, is high in measurement efficiency, is good in measurement reproducibility, and can effectively guarantee the service life of a transmission.

The invention relates to the technical field of measuring equipment, in particular to a six-degree-of-freedom parallel mechanism pose high-precision measuring system and method.The six-degree-of-freedom parallel mechanism pose high-precision measuring system comprises a laser emission reference device, an array light spot feature target assembly, a parallel mechanism movable platform and a feature detection and recognition assembly, and the laser emission reference device is arranged at the top of the parallel mechanism fixed platform; the array light spot feature target assembly is arranged above the laser emission standard device and arranged at the bottom of the parallel mechanism movable platform, and the four corners of the bottom of the parallel mechanism movable platform are fixedly connected with the top of the parallel mechanism fixed platform through the six-degree-of-freedom parallel mechanism. The feature detection and recognition assembly is arranged at the bottom of the array light spot feature target assembly and used for recognizing light spot information and target feature information on the array light spot feature target assembly, processing of redundant data is reduced, the measurement period is shortened, and it is ensured that high-precision rapid measurement is achieved.

The invention discloses an intelligent diagnosis system and method for defects of a metal oxide arrester. The intelligent diagnosis system comprises a data acquisition and preprocessing module, a feature extraction and model training module, a real-time diagnosis module, an anomaly detection and health assessment module and an adaptive learning module. The data acquisition and preprocessing module acquires lightning arrester test point data, is connected with the measurement equipment through an interface, and stores the data in the MySQL database. The feature extraction and model training module extracts key features from the preprocessed data, performs dimensionality reduction by using PCA and LDA, constructs a feature matrix, and performs model training and verification by using a machine learning algorithm; the real-time diagnosis module collects the operation data of the lightning arrester in real time, monitors the operation state, and carries out intelligent diagnosis through a training model. The anomaly detection and health assessment module monitors an operation data anomaly mode, assesses the overall health state and provides a health report; and the adaptive learning module optimizes a retraining model according to the new data, and updates parameter intelligent diagnosis. The accuracy and comprehensiveness of diagnosis are improved, and the judgment is more scientific and accurate.

The invention relates to the technical field of notebook computer shell measurement, in particular to notebook computer shell boundary dimension and flatness measuring equipment which comprises a lower rack, an upper machine cover, a rotating disc module, a flatness measuring module, a boundary dimension measuring module, a finished product taking-out module and a code scanner. The notebook computer shell is switched to different stations, then flatness measurement is conducted through the flatness measurement module, boundary dimension measurement is conducted through the boundary dimension measurement module, and finally the notebook computer shell is rotated and moved to the finished product taking-out module to be taken out, so that the equipment can be directly in butt joint with a production line, manual feeding and discharging can be achieved, and manual feeding and automatic discharging can also be achieved; full-automatic feeding and discharging operation can be achieved; therefore, the direction is adjusted through rotation, continuous boundary dimension and flatness measurement can be carried out on the notebook computer shell, automatic material taking and production line butt joint are carried out after detection is completed, and the detection efficiency and the production line productivity are greatly improved.

The invention relates to the technical field of length measurement, and particularly discloses a length measurement device based on laser interference, which comprises a laser measurement module, an air curtain channel module, an air curtain construction module and a channel adjustment module, the laser measuring module is used for transmitting and receiving laser, the optical path difference change is measured according to the interference principle, and the micro length change of the workpiece can be continuously and accurately measured in real time while the machining module carries out machining operation on the workpiece; a linear channel is formed between the laser head and the measuring reflector through the air curtain channel module, inert gas is continuously introduced into the channel through the air curtain construction module, and an air curtain atmosphere with stable laminar flow is formed, so that pollutants and interference factors such as oil mist, dust, cutting fluid splashing and hot air turbulence generated in a machining area are effectively blocked, and the machining precision is improved. Therefore, the measurement light beam is prevented from being interfered by environmental factors in the propagation process.

The invention discloses a complex space truss positioning system and method based on a three-dimensional coordinate acquisition technology, and relates to the technical field of truss positioning. The complex space truss positioning system and method based on the three-dimensional coordinate acquisition technology comprises the following steps: S1, three-dimensional modeling and pre-compensation; s2, constructing and dynamically calibrating a three-dimensional control network; s3, on-site preliminary measurement and data acquisition; s4, contour trajectory speculation and connection complementation; s5, performing dynamic multi-view measurement and data integration; s6, data analysis and positioning adjustment; measuring equipment is selected according to the characteristics of the truss, node coordinates are preliminarily measured and collected, shielded parts are recorded, interference of environmental factors is controlled, and the quality of basic measurement data is guaranteed. An image processing and mode recognition technology is utilized to analyze a contour track, connection and node positions of a shielding part are speculated in combination with structural characteristics, and verification is performed after mechanical analysis optimization, so that the measurement problem caused by shielding is effectively solved, and data integrity is improved.

The invention belongs to the technical field of precision part machining, and discloses a precision part machining precision error compensation technology, high-precision measuring equipment comprises a laser interferometer and a coordinate measuring machine, a numerical control system calculates the compensation amount of each axis of a machine tool according to a model and carries out dynamic adjustment, and an online tool measuring system comprises a tool compensation probe. The laser interferometer carries out interference measurement through reflection of a laser beam and a machine tool measuring part so as to obtain the measurement precision, and through cooperation of the laser interferometer, the coordinate measuring machine and the cutter compensation probe, the numerical control system calculates the compensation amount of each axis of the machine tool according to a model and carries out dynamic adjustment. The laser interferometer performs interference measurement through reflection of a laser beam and a machine tool measuring part, ensures parallelism and perpendicularity, checks error changes of the machine tool at different working temperatures, detects motion errors of the machine tool at different temperatures by using the laser interferometer, and compensates the errors according to the temperature changes.

The invention relates to the technical field of ship traffic management, and discloses a ship navigation height measuring method, which comprises the following steps: acquiring a target ship distance based on intelligent measuring equipment mounted at the bottom of a bridge; identifying the target ship image to obtain the position of the upper edge of the ship, equally dividing the vertical field angle according to the resolution of the ship image, and calculating the laser center angle in combination with laser ranging equipment; according to the ship upper edge position, the vertical field angle and the ship image resolution, a target ship elevation angle is calculated, and a target ship angle difference is calculated; judging whether the target ship height reaches a preset height according to the ship angle difference; if so, calculating the relative height of the target ship; and obtaining the ship height of the target ship according to the ship relative height and a preset height, and notifying whether the target ship is allowed to navigate or not according to the bridge height parameter and the ship height. The invention further provides a ship navigation height measuring device and equipment and a storage medium. According to the invention, the accuracy of ship height measurement can be improved.

The invention provides an ultrasonic surface density measuring method, an ultrasonic surface density measuring system and ultrasonic surface density measuring equipment, and relates to the field of ultrasonic measurement. Therefore, real-time signal compensation is carried out on the acquisition point offset caused by the movement of the object to be measured in the use process of the ultrasonic surface density measurement equipment, so that the measurement precision is remarkably improved, and the production efficiency is improved.

According to the measuring equipment provided by the invention, based on the light path design of double Fizeau interferometers, the third quarter-wave plate is arranged between the first PBS beam splitter prism and the first protective glass, and the fourth quarter-wave plate is arranged between the second PBS beam splitter prism and the second protective glass; the first protection glass reflects part of incident light beams to the third quarter-wave plate and then reflects out of a light path after passing through the first PBS prism, and the second protection glass reflects part of incident light beams to the fourth quarter-wave plate and then reflects out of the light path after passing through the second PBS prism. Therefore, light reflected by the paired protective glass is prevented from entering the interferometer on the side, crosstalk is filtered out, and the measurement precision is ensured.

A light emitting device includes plural light emitting blocks, each including a light emitting element and a setting element that sets the light emitting element in a state of being able to be turned on, and a discharge path that includes a discharge element capable of controlling discharge in a case where the light emitting element is turned off and through which charges accumulated in a case where the light emitting element is turned on are discharged, in which the plural light emitting blocks and the discharge path are electrically connected in parallel.

A calibration unit comprises a first port which is arranged for being connected to a measurement device; a calibration module comprising at least three different calibration standards for calibrating the measurement device; and a switching module configured to connect the first port with one of the at least three different calibration standards of the calibration module. A daisy chain port is arranged for being connected to a further calibration unit, to an external power meter, or to a device-under-test, DUT. The first port is connectable to the daisy chain port. An internal power meter is arranged within a housing of the calibration unit. The first port is connectable to the internal power meter; or an internal impedance tuner. The first port is connectable to the internal impedance tuner.

A method of assessing a feature on a patient's skin surface includes capturing (i) an image of the patient's skin surface with a camera of a portable capture device and (ii) range information with an auxiliary range measurement device that is attached to the portable capture device. Based on the range information, a single range value can be determined between the capture device and the patient's skin surface. In some embodiments, a scale can be associated with the image based on the single range value.

The invention discloses a high-precision temperature measuring equipment correction system, and relates to the technical field of temperature measuring equipment correction, and the high-precision temperature measuring equipment correction system mainly comprises a hardware layer, an algorithm layer and an embedded layer which are electrically connected with one another. The hardware layer is used for acquiring temperature data, humidity data and pressure data; the hardware layer comprises a temperature sensor array, a humidity sensor, a pressure sensor and an analog-to-digital converter; the algorithm layer is used for correcting the temperature data according to the temperature data, the humidity data and the pressure data, and the algorithm layer comprises a data preprocessing module, a hybrid correction module and a dynamic compensation module; and the embedded layer is used for task scheduling and temperature data output. By implementing the high-precision temperature measurement equipment correction system provided by the invention, the correction precision, efficiency and reliability of the temperature measurement equipment can be improved.

Method (50) for measuring a surface of a workpiece (12) with an optical sensor (14) of a measuring device (10), comprising the following steps: - Capturing (54) a plurality of images of the surface of the workpiece (12) using the optical sensor (14), wherein each image represents a region of the surface of the workpiece (12), wherein each image is assigned a defined 6-DOF pose of the optical sensor (14) relative to the workpiece (12) and a defined focal plane position of the optical sensor (14), and wherein the captured images form an image stack; - Determining (62) a sharpness value of each pixel of each image of the image stack in order to generate a sharpness map for each image of the image stack, wherein the sharpness maps of the images form a sharpness map stack; - Transforming (64) the focus maps of the focus map stack into a defined reference system based on the respective associated 6-DOF pose and focal plane position of the optical sensor (14) to generate a focus cloud; and - Generating (66) a surface profile of the workpiece (12) based on the sharpness cloud, in particular based on local sharpness maxima of the sharpness cloud, wherein the method (50) further comprises the following step: - Moving (56) the optical sensor (14) and the workpiece (12) relative to each other during the sensing step (54) to change the 6-DOF pose of the optical sensor (14) in space relative to the workpiece (12), wherein in the moving step (56) the optical sensor (14) is moved rotationally, in particular tilted and / or rotated.