136results about How to "Fast positioning" patented technology

The invention discloses a welding manipulator with multiple degrees of freedom, and relates to the technical field of welding manipulators, the welding manipulator comprises a working frame, the outer wall of the working frame is fixedly connected with an X-axis motor, the output end of the X-axis motor is fixedly connected with an X-axis screw rod, and the outer wall of the X-axis screw rod is in threaded connection with an X-axis cross beam; by arranging an X-axis cross beam, a Y-axis cross beam and a lifting frame, the X-axis cross beam slides to drive a welding machine welding gun at the bottom end of a linkage block to slide synchronously, then the Y-axis cross beam slides to drive the welding machine welding gun at the bottom end of the linkage block to slide synchronously, and then a Z-axis motor works to drive a welding machine welding gun at the bottom end of the lifting frame to slide synchronously through a Z-axis lead screw; the Z-axis positioning operation of the welding gun of the welding machine is achieved, then the rotating motor works to drive the welding gun of the welding machine at the bottom end of the rotating base to rotate so that the welding gun of the welding machine can move to the welding area of the welding part quickly, the positioning speed of the welding gun of the welding machine is high, and the multi-degree-of-freedom welding operation of the welding part is achieved.

The invention discloses a fault upstream and downstream judgment method based on an instantaneous symmetric component method. The fault upstream and downstream judgment method comprises the following steps: S1, monitoring current data of each node of a power distribution network in real time; s2, calculating an instantaneous positive sequence current and an instantaneous negative sequence current of the real-time data by adopting an improved instantaneous symmetric component method; s3, performing primary difference on the instantaneous positive-sequence current and the instantaneous negative-sequence current respectively; s4, comparing the primary differential value of the instantaneous negative-sequence current with a set threshold value, and judging whether the directions of the instantaneous positive-sequence current and the instantaneous negative-sequence current are the same or not; and S5, performing fault section judgment by combining the direction of the instantaneous positive and negative sequence current and the topological structure of the power distribution network. The improved instantaneous symmetric component method is used to obtain the instantaneous positive-sequence current and the instantaneous negative-sequence current, the directions of the instantaneous positive-sequence current and the instantaneous negative-sequence current are analyzed, the fault section can be quickly and accurately positioned, and the cost is reduced.

The invention discloses a self-positioning rotary jig for laser welding equipment, and belongs to the technical field of welding jigs, the self-positioning rotary jig comprises a base and a welding table rotationally arranged on the base, the base is provided with a laser welding assembly, the welding table is fixedly connected with a positioning cylinder, the self-positioning rotary jig further comprises a driving disc rotationally connected in the positioning cylinder, and the driving disc is arranged on the base. A plurality of arc-shaped sliding holes are formed in the driving disc; according to the self-positioning rotating jig for the laser welding equipment, when a second motor drives a cylinder to rotate, under the supporting of a torsional spring and a baffle on the shifting plates, the multiple shifting plates synchronously rotate along with the cylinder, the multiple abutting plates abut against multiple driven plates on a rotating rod correspondingly, the multiple driven plates are driven to rotate at the same time, and then the rotating rod and a driving disc are driven to rotate; according to the welding device, the workpiece can be quickly corrected and positioned, the welding device can adapt to cylindrical workpieces of different sizes, the positioning speed of the workpiece is high, the inclined workpiece can be automatically corrected, and the welding efficiency of the workpiece can be improved.

The utility model provides a dust removal controller. The dust removal controller comprises a main processor, a power supply module, a pulse driving module, an analog quantity acquisition module and a digital quantity input acquisition module, the main processor is respectively connected with the power supply module, the pulse driving module, the communication module, the analog quantity acquisition module and the digital quantity input acquisition module; the pulse driving module is respectively connected with the vibrator, the blowing and spraying valve and the offline valve, and the vibrator, the blowing and spraying valve and the offline valve are arranged in the dust removal bin; the analog quantity acquisition module is connected with the bag leakage detection device; the digital quantity input acquisition module is connected with the fluorescence detector; and the fluorescence detector is arranged in the dust removal bin. According to the utility model, the damage condition of the cloth bag can be detected on line in real time, the cloth bag damage positioning speed is improved, personnel can be commanded to replace the cloth bag in time, and time is saved.

The utility model discloses a brake pad steel backing drilling positioning device which comprises a support, a supporting plate, a first transmission assembly, a clamping plate, a second transmission assembly, a pressing assembly and a workbench, the supporting plate is arranged on the support in a sliding mode, the first transmission assembly is arranged between the support and the supporting plate and used for driving the supporting plate to slide, and the clamping plate is arranged on the workbench. The two clamping plates are arranged on the supporting plate in a sliding mode, the second transmission assembly is arranged between the supporting plate and the clamping plates and used for driving the clamping plates to slide, the pressing assembly is arranged on the supporting plate and located between the two clamping plates, and the workbench is used for containing the steel backing and provided with a positioning strip. The steel backing is placed on the workbench, the first transmission assembly drives the supporting plate to slide, the pressing assembly presses the steel backing, meanwhile, the two clamping plates clamp the steel backing, the steel backing is located at the designated position, and accurate positioning is achieved.

This invention discloses a positioning method, chip, and robot for a mobile printing robot, comprising: the mobile printing robot starting to work on paper, acquiring an image of the current walking surface through a camera, and then determining a first boundary of the paper based on the acquired image of the current walking surface; the mobile printing robot determining a second boundary of the paper based on the first boundary, and then determining an initial printing position based on the first and second boundaries of the paper. The mobile printing robot can independently acquire the paper boundaries for positioning, without the need for additional positioning tools, making it convenient to use and reducing the overall cost of the machine.

The invention discloses a single-phase earth fault positioning method and system based on zero-sequence current integration, and the method comprises the steps: recording fault transient zero-sequence current data within 0.04 s after a fault occurs at each detection point on a line after the single-phase earth occurs on the line; the method comprises the following steps: firstly, filtering fault transient zero-sequence current data acquired by each detection point within a set period to obtain transient data, then calculating an amplitude within a set time period after a fault, and generating a transient zero-sequence current amplitude sequence of each detection point; the main station calculates a transient zero-sequence current amplitude integral coefficient and an amplitude comprehensive difference coefficient of the detection points at the two ends of each section on the fault line by using the uploaded transient zero-sequence current amplitude sequence data; and the master station carries out positioning according to the calculated transient zero-sequence current amplitude integral coefficient and amplitude comprehensive difference coefficient of each section. The system comprises a data acquisition module, a data processing module, a calculation module and a positioning module. The method can judge the fault section according to the amplitude integral coefficient.

The invention relates to the technical field of galvanized sheet preparation, in particular to a passivation device and process for galvanized sheet preparation. Comprising a liquid containing box, the liquid containing box is provided with a mounting frame, the mounting frame and the liquid containing box are jointly provided with a displacement module, and the displacement module is provided with a mounting plate; the supporting plate is fixedly connected to the mounting plate, and the supporting plate is slidably connected with two first sliding plates which are distributed in a mirror image mode; the number of the L-shaped frames is the same as the sum of the number of the slideways on the two first sliding plates, and the L-shaped frames are connected into the slideways of the adjacent first sliding plates in a sliding mode; and the second sliding plate is connected to the mounting frame in a sliding mode, and the second sliding plate is connected with a sliding column in a sliding mode. The bending amplitude of the corrugated plate is detected through the sliding column, so that when corrugated plates of different batches are fixed, the flat area of the corrugated plate can be quickly positioned, the positioning speed of a fixed point is increased, and the production efficiency is improved.

The invention discloses a high-value target rapid detection and positioning method and system based on an ultra-wide rotary scanning remote sensing image, belongs to the technical field of computer algorithms, and is used for realizing high-value target rapid identification and positioning under the remote sensing image. The method comprises the following steps: acquiring an ultra-wide swing-scan remote sensing image, and timestamps, remote sensing satellite orbit data and swing-scan camera parameters corresponding to each column of pixels of the image; according to the data, calculating an overlapping proportion required by a corresponding pixel position in real time, and segmenting the ultra-wide swing-scanning remote sensing image into a plurality of slices with different sizes; taking a plurality of slices with different sizes as the input of a detector, outputting a target detection frame, and mapping the detection frame back to the ultra-wide remote sensing image according to the positions of the slices in the original image; and taking the pixel coordinate of the center of the target detection frame as the image position of the target, and mapping the pixel coordinate of the target to a WGS84 coordinate to complete the detection and positioning of the high-value target. The method is suitable for rapid identification and positioning of high-value targets under remote sensing images.

The utility model discloses a steel plate positioning butt joint device, which relates to the technical field of steel plates and comprises a support, a positioning component is fixedly mounted between opposite sides of the support, a steel plate body is lapped on the opposite sides of the positioning component, an adjusting component is arranged above the steel plate body, the positioning component comprises two stop dogs, and the two stop dogs are in lap joint with the steel plate body. The separated sides of the two check blocks are fixedly installed on the upper surface and the lower surface of the inner side of the support correspondingly, and L-shaped plates are fixedly installed at the left positions and the right positions of the front sides and the rear sides of the check blocks correspondingly. The inserting blocks on the fixed pulling pieces are inserted into the inserting grooves in the connecting plate through the pull rods, the fixed pulling pieces and the L-shaped plate are fixed through the bolts and the nuts, the butt welding seam position of a steel plate penetrates through the two fixed pulling pieces, the steel plate is supported through the lower check block and the two supporting plates, and then the wedge blocks are plugged into the left side and the right side of the check block respectively. And the steel plate can be positioned without welding a positioning block, so that the positioning speed of the steel plate is increased.

The utility model discloses a spraying device for a special-shaped surface of a cabin cover, which relates to the field of cabin cover processing and comprises a spraying box, a spraying component is arranged in the spraying box, and one side of the spraying box is provided with an opening and is connected with a box door; the spraying box is installed on the bottom plate, and a transportation assembly used for transporting the cabin cover is arranged in the bottom plate; and the scanning assembly is used for scanning and imaging the cabin cover entering the spraying box so as to determine the curved surface contour of the cabin cover, and the scanning assembly is connected with a swing assembly which enables the scanning assembly to swing and work on the vertical plane. The device has the advantages that the spraying surface of the cabin cover can be quickly scanned and imaged through the scanning assembly, so that the spraying position of the logo is quickly determined, positioning is quick and accurate, the logo spraying area is conveniently exposed in a rubberizing and laser engraving mode, other areas cannot be polluted while spraying is facilitated, and use is convenient.

The invention relates to the technical field of image processing, in particular to an automatic calibration method based on a two-dimensional code calibration board, and the method comprises the steps: obtaining a calibration board image, and carrying out the preprocessing of the calibration board image; fitting and positioning the contour of the Mark point target, obtaining the scaling and target angle in the X and Y directions, determining the direction of the calibration plate according to the position relation of the two Mark point targets, rotating the image by using affine transformation, and completing the correction of the direction of the image of the calibration plate; carrying out tangential distortion correction on the calibration plate image; reading two-dimensional code information of the calibration board image after tangential correction; and carrying out radial distortion correction on the calibration plate image. Tangential distortion and radial distortion correction is performed on calibration plate images of a Mark target and a two-dimensional code, and camera calibration and image calibration are realized; based on a Mark target and a calibration board image of a two-dimensional code, related information stored in the calibration board is automatically obtained, and camera calibration and image calibration are automatically completed.

The utility model relates to the field of detectors, in particular to an X-ray nondestructive perspective detector which is characterized in that a detection cavity is formed in a detector body, a detection mechanism is arranged at the top of the detection cavity, and a movable cavity is downwards formed in the bottom of the detection cavity; an electric top extension rod is arranged at the bottom of the movable cavity, the top extension end of the electric top extension rod is vertically upward and is connected with a special-shaped connecting piece, a supporting plate is arranged above the special-shaped connecting piece through an elastic column, and limiting columns are connected to the ends of the periphery of the special-shaped connecting piece. According to the utility model, through the arrangement of the detection mechanism, a to-be-detected piece can be detected, before detection, a user only needs to put the to-be-detected piece on the supporting plate in the movable cavity, the supporting plate is jacked up through the electric jacking rod and the special-shaped connecting piece, and through the arrangement of the elastic column, the limiting column can be jacked out of the limiting cavity and the to-be-detected piece can be clamped; the mode does not need tedious manual positioning by a user, the positioning speed is high, and the detection efficiency of the to-be-detected piece is improved.

The utility model relates to the technical field of automobile electromagnetic valves, and discloses a plunger machining positioning device which comprises a machining table, a fixing plate is fixedly installed on the upper surface of the machining table, two sliding grooves are formed in the front face of the fixing plate, and an electric sliding rail is fixedly installed on the inner wall of each sliding groove. The outer surface of each electric sliding rail is slidably connected with a sliding block, the outer surface of each sliding block makes contact with the inner wall of the sliding groove, a support is fixedly installed on the front face of each sliding block, first clamping plates are fixedly installed on the side faces, close to each other, of the two supports, and a second clamping plate is fixedly installed on the front face of the fixing plate. According to the plunger machining and positioning device, the machining table, the fixing plate, the sliding groove, the electric sliding rail, the sliding block, the support, the first clamping plate, the second clamping plate, the electric push rod, the positioning plate and the positioning hole are arranged, an electromagnetic valve is fixed to the designated position through the first clamping plate and the second clamping plate, and therefore the effect of automatically positioning the electromagnetic valve through the electric sliding rail and the like can be achieved.

The invention is suitable for the technical field of mobile positioning, and provides an auxiliary positioning method, device and system for a mobile terminal, and the method comprises the steps: starting a positioning module after a positioning demand is obtained, and transmitting a first type of data string based on a Bluetooth module, the first type of data string comprising a device ID and a position cooperation request; after the positioning module obtains the real coordinate of the current equipment, a second type of data string is sent based on the Bluetooth module, and the second type of data string comprises the equipment ID and the real coordinate of the current equipment; when the Bluetooth module obtains a second type of data string transmitted by other equipment, the real coordinates of the other equipment contained in the second type of data string are analyzed into the virtual coordinates of the current equipment; and successively generating a motion route based on the time sequence of the real coordinate and the virtual coordinate of the current equipment. According to the method, coordinate interaction is carried out by utilizing Bluetooth, so that positioning is assisted, the terminal equipment with slow positioning speed is helped to realize rapid position coordinate acquisition, and the positioning speed is accelerated.

The invention provides a loading test system for a high-speed gear box of an aviation oil pump, which relates to the technical field of gear box detection and comprises a main driving device and two sets of output loading devices, the main driving device comprises a loading driving motor, a speed increasing driving accompanying test box and a flange connecting structure, an output shaft of the loading driving motor is connected with an input shaft of the speed increasing driving accompanying test box, and an output shaft of the speed increasing driving accompanying test box is used for being connected with an input shaft of a gearbox to be tested; and the two sets of output loading devices are respectively used for being connected with two output shafts of the gearbox to be tested. The flange connection structure is installed on the speed increasing driving accompanying test box and is used for being fixedly connected with a gearbox to be tested. The test system and the to-be-tested gearbox are low in assembly difficulty and high in assembly efficiency, the test system is used for carrying out a loading test on the gearbox, related parameters of the gearbox can be accurately obtained, the performance of the gearbox can be mastered conveniently, and subsequent debugging and use of the gearbox are facilitated.

The application provides a converter valve area short-circuit fault positioning method, device, equipment and medium, the method comprises the following steps: dividing the converter valve fault into eight typical valve area short-circuit faults; RTDS simulation analysis, according to the different converter protection action results, dividing into three types of protection actions, giving the typical fault characteristic quantity of the valve difference protection action for positioning the valve area fault and the eight typical valve area short-circuit quick criterion; according to whether the actual converter protection action occurs in the rectifying station or the inverting station, confirming the valve area short-circuit fault occurring station; according to the converter protection action event of the monitoring background, confirming the converter protection action type and the valve area fault converter bridge; calling the built-in fault recording of the DC control protection, analyzing the converter protection action waveform, analyzing the fault characteristics of the current waveform of the valve side of the converter bridge and the outlet current waveform of the DC side, positioning the valve area short-circuit fault point according to the typical fault characteristic quantity of the valve difference protection action and the eight typical valve area short-circuit quick criterion; and has the advantages of fast positioning speed and simple analysis method.

The utility model relates to pipeline welding auxiliary device technical field, is a kind of automatic in position device of medium-frequency heating band, including medium-frequency heating band and the welding shed covered in the upper portion of medium-frequency heating band, further including winch, first pulley, second pulley, first wire rope and second wire rope, first pulley and second pulley are symmetrically installed in the upper portion left and right interval of medium-frequency heating band, first fixed seat is installed in the inside of the upper portion of welding shed corresponding the position above first pulley, first guide pulley is rotatably installed in first fixed seat.The utility model is reasonable and compact, the quick lifting and positioning of medium-frequency heating band are realized by the start-stop of winch control, the medium-frequency heating band can be evenly wrapped on the outside of pipeline, the pipeline is heated, and it can be completed by single operation, the efficiency is improved by 3 to 5 times compared with manual winding mode, and falling injury accident and scald accident easily caused under high temperature environment during manual operation can also be avoided.

The invention discloses an SQL execution efficiency optimization method in a data warehouse, and relates to the technical field of database management and data processing. Comprising the following steps: based on a database protocol, according to rule configuration, identifying a data source, carrying out data source adaptation, sequentially carrying out SQL grammar analysis, SQL routing identification and SQL rewriting, forming an execution plan, caching the execution plan for repeated execution and calling, mapping data to a plurality of data storage partitions during write operation, and avoiding data inclination during write; during reading operation, a data scanning algorithm is utilized to automatically adapt to a data source, fragment query is rewritten, and empty scanning is reduced; submitting the execution plan to an SQL (Structured Query Language) execution engine, performing standard grammar execution and complex grammar analysis by the execution engine, generating a secondary execution plan, and if write operation is performed, performing partition storage of hot data and regularly performing cold data archiving by the execution plan; if the read operation is carried out, partition pruning optimization is carried out, and data merging and assembling are carried out through an SQL execution engine: returned data is merged, and if the read operation is carried out, an execution plan is dynamically analyzed, memory distribution of index data is adjusted, and high-frequency data is cached; and if the operation is the write operation, compressing and storing the data, and adjusting the index.

The invention discloses an individual multifunctional reconnaissance system, which is characterized by comprising an infrared detection module, a laser ranging module, a visible light module, a positioning module, an attitude measurement module and a comprehensive information processing module, the infrared detection module, the laser ranging module, the visible light module, the positioning module and the attitude measurement module are all connected with the comprehensive information processing module; the comprehensive information processing module is used for receiving detection data of each module, carrying out target calculation and estimating a target motion state by adopting Kalman filtering; the method has the advantages that the target positioning method is simple in calculation and high in positioning precision.

The utility model discloses a wafer film covering device for integrated circuit manufacturing relates to the field of integrated circuit manufacturing, including closed box, be provided with the film covering mechanism in the upper end in closed box, be provided with wafer bearing mechanism in the lower end in closed box, be provided with the loading positioning mechanism in closed box, and the loading positioning mechanism includes the positioning support, a plurality of circumferentially uniformly arranged deflection rods are rotationally connected on the positioning support, the cross connecting disc is fixed in the top of deflection rod, and the adjacent cross connecting disc is hinged through the connecting rod, and the other end fixed with the material receiving tray of deflection rod, and the material receiving tray is fixed with the positioning ring, and the positioning cylinder is hinged between one deflection rod on the positioning support. The beneficial effect lies in: before loading, the wafer is supported through a plurality of circumferentially uniformly arranged material receiving trays, and then a plurality of positioning rings synchronous movement is centered clamped to the wafer, thereby realizing the centring positioning of wafer, and this positioning mode has high centring accuracy, positioning speed is fast, and is convenient for taking and placing.

The utility model discloses a tool for calibrating a CT (Computed Tomography) external laser lamp, which belongs to the technical field of CT equipment and is characterized in that a first datum line and a second datum line are arranged on the surface of a calibration cylinder, a leveling instrument platform is arranged at one end of the calibration cylinder, a positioning rod is fixedly connected to the other end of the calibration cylinder, and a first spring washer and a mounting plate are movably sleeved on the surface of the positioning rod; according to the tool for calibrating the CT external laser lamp, through two side holes formed in a mounting plate, two connecting rods arranged on two connecting arms, a second adjusting sleeve and a third adjusting sleeve, the mounting plate has a rotary adjusting function, and then the horizontal position of a calibration cylinder is adjusted; and through a center hole formed in the mounting plate and a positioning rod and a first adjusting sleeve arranged on the calibration barrel, the calibration barrel has a rotating function, the position of the leveling instrument platform is adjusted, the positioning speed of the calibration tool is greatly increased, and the calibration efficiency of the CT external laser lamp is improved.

The invention provides a vehicle positioning method and system, and the method comprises the steps that a vehicle control end generates a target vehicle positioning request and sends the target vehicle positioning request to a target satellite end in an orbital satellite system, and the orbital satellite system comprises a plurality of satellite ends; and the target satellite terminal obtains vehicle position coordinates of a target vehicle corresponding to a vehicle identifier according to the vehicle identifier indicated by the target vehicle positioning request and sends the vehicle position coordinates to the vehicle control terminal. Vehicle positioning is achieved through orbit satellite signals, the coverage range is wider, and the positioning speed is higher and more accurate.

The utility model relates to the technical field of metal processing auxiliary equipment, and discloses an aligning and positioning tool for laminated processing of metal plates, which comprises a square guide rail, a sliding guide rail and a positioning component. A protruding block is arranged on the inner side of the square guide rail and connected with the two sliding guide rails in a sliding mode, a vertically-sliding positioning piece is arranged in each sliding guide rail, each positioning piece is composed of a sliding part and a rotating part, and the rotating parts are in rolling contact with the plate through the limiting holes. An elastic telescopic rod is arranged between the sliding guide rails to achieve self-adaptive adjustment, and the square guide rails drive the sliding guide rails to move oppositely through electric push rods. The working panel is provided with a guide groove and a slidable positioning sleeve, and plates are diagonally fixed through bolts. According to the tool, the electric push rod drives the positioning piece to conduct multi-direction linkage, the elastic telescopic rod and the rolling contact structure are combined, four-direction automatic positioning of the plate is achieved, the problems that a traditional tool is low in positioning efficiency and poor in precision are effectively solved, and the tool has the advantages of being capable of rapidly adapting to plates of different sizes, stable in multiple angles, capable of preventing deviation and capable of improving the machining precision.

The invention discloses an image imaging processing method and system, electronic equipment and a storage medium, and relates to the field of image processing. The method comprises the following steps: acquiring image data through a preset sensor, and judging whether a pattern scanning instruction sent by a user is received or not; when a pattern scanning instruction sent by a user is not received, performing imaging processing on the acquired image data, calculating the offset of a first pattern after imaging from a preset center position, and determining whether a preset rapid positioning condition is met or not according to the offset; when a preset rapid positioning condition is met, determining a target area according to historical appearance position information of the first pattern, and performing feature comparison in the target area to position the first pattern; and correcting the first pattern according to the offset. By implementing the technical scheme provided by the invention, the precision and efficiency of image processing, especially the pattern recognition and positioning capability in a complex environment, are improved.

This application provides a battery swapping station. It includes: an object sensing platform for detecting the presence of a vehicle in a preset area, and sending a collection signal to a non-repetitive scanning LiDAR when a vehicle is confirmed to be present; the non-repetitive scanning LiDAR for performing point cloud acquisition upon receiving the collection signal to collect point cloud data of the vehicle's battery box and transmitting it to an attitude positioning device; and an attitude positioning device for determining the spatial position and attitude information of the battery box based on the point cloud data. This invention achieves precise positioning of the battery box across its entire attitude by fixing a single non-repetitive scanning LiDAR to the battery swapping station. It features a simple structure, convenient installation, fast positioning speed, and easy maintenance, reducing the cost of the battery swapping station while improving its stability.

The present invention relates to the field of rotor stamping technology, and specifically to a motor rotor stamping device and a brushless permanent magnet motor stamping method, comprising a workbench; the stamping device also comprises a positioning unit and a pressing unit; a circular groove is vertically penetrated through the workbench, the positioning unit is an annular structure, the positioning unit has a positioning state and a processing state, when the positioning unit is in the positioning state, the positioning unit is a truncated cone structure with a large upper opening and a small lower opening, when the positioning unit is in the processing state, the positioning unit is a cylindrical structure; the pressing unit is arranged above the workbench along the axis of the circular groove. The present invention optimizes the positioning of the rotor end plate, so that after the rotor end plate is positioned, the axis of the rotor end plate is in line with the pressing axis of the pressing unit, and at the same time, the above-mentioned positioning method is used to increase the positioning speed, thereby increasing the output.

The invention belongs to the technical field of power line loss detection and monitoring, and particularly relates to a current freezing acquisition system based on synchronous triggering of different sites, which comprises an upper computer and current freezing acquisition units, and is characterized in that each current freezing acquisition unit comprises a low-voltage side assembly and a high-voltage side assembly; the low-voltage side assembly comprises a GPS, a low-voltage photoelectric conversion circuit, a data receiving module, a data processing module, an effective value calculation module and a data uploading module, and the high-voltage side assembly comprises a high-voltage photoelectric conversion circuit, a trigger control circuit, a current sampling assembly and a data sending module. According to the invention, the plurality of current freezing acquisition units synchronously acquire the instantaneous current values of the line at the same time according to the set time, and transverse comparison is carried out, so that the line loss can be analyzed in a synchronous instantaneous current subsection metering mode; the defects that long time needs to be waited for subsection metering through an electricity quantity method, power failure operation needs to be carried out for obtaining line high voltage, and the specific time point of line high loss cannot be determined are overcome.