384 results about "Distance measuring equipment" patented technology

The invention relates to the technical field of fault positioning, and particularly discloses a digital distribution network fault traveling wave range finder and method, and the range finder employs fault traveling wave collection devices disposed at all key nodes of a distribution network to collect fault traveling wave signals in real time, and obtains stable line mode traveling wave signals through signal filtering and line mode component extraction. Then introducing a signal processing algorithm based on deep learning to carry out time domain feature analysis on the line mode traveling wave signal of each key node so as to detect the wave head position of the signal, further determining a power distribution network section where a fault point is located by comparing the signal arrival time of each key node, and determining the fault location of the power distribution network based on a double-end traveling wave distance measurement algorithm. And calculating the distance between the fault point and the nodes at the two ends according to the signal arrival time difference of the nodes at the two ends of the section and the signal propagation speed. Thus, through deep time domain analysis of the fault traveling wave signal, the wave head position of the signal can be accurately identified, and the reliability of distribution network fault traveling wave distance measurement is improved.

Tracked distance measuring device, systems, and methods for determining and mapping point of interest for use in utility locating operations and other mapping applications are disclosed. A tracked distance measuring device embodiment includes simultaneously triggered rangefinder and positioning elements to measure a distance and determine location and pose, optionally in conjunction with a utility locator.

The invention belongs to the technical field of power switch cabinets, and particularly provides a switch cabinet with a stroke measurement function, which comprises a cabinet body, a handcart, a stroke measurement assembly and an attitude detection assembly, and is characterized in that the stroke measurement assembly comprises a first range finder and a current detector, the first range finder is arranged on the handcart, and the current detector is arranged on the handcart; and the current detector is connected between the moving contact mechanism and the bus. And the handcart is pushed forwards until the current detector is electrified, and the distance S1 measured by the first range finder is recorded. The handcart continues to be pushed until the handcart reaches a preset working position, the distance S2 measured by the first distance meter is recorded, and the difference between the two distances is the contact stroke of the contact. According to the invention, the stroke measurement assembly can measure the contact stroke of the contact, and the attitude detection assembly can detect the position attitude of the moving contact mechanism, so that the problem of poor contact of the contact can be found and processed in time, the frequency and cost of equipment overhaul and maintenance can be reduced, and the operation stability of a power grid can be improved.

The invention relates to an anti-collision system for combined operation of multiple ship unloaders, which is characterized by comprising radar anti-collision sensors mounted at key positions such as a traveling cart and a spiral platform of the ship unloaders; the laser range finder is mounted at a specific position of the ship unloader; the RFID tag and the radio frequency positioning module are mounted on a ship unloader track and a ship unloader walking cart; the 3D laser scanner is mounted on the ship unloader; and the PLC control system is used for receiving detection data from the radar anti-collision sensor, the laser range finder, the RFID tag and the 3D laser scanner, and controlling the ship unloader to stop moving equipment or send an anti-collision alarm signal according to preset safe distance parameters. The problems that in the prior art, a traditional anti-collision system depends on a single sensor or a technical means to achieve anti-collision, and all-directional and high-precision anti-collision protection is difficult to achieve are solved.

The invention relates to the technical field of bridge deflection monitoring equipment, in particular to a bridge state real-time monitoring device, system and method based on radar deployment. A reciprocating motion mechanism and a tooth holder are arranged on the surfaces of the two sides of the bearing plate frame respectively, and the other end of the reciprocating motion mechanism penetrates through the surface of the other side of the bearing plate frame and is provided with a wheel type pressure detection mechanism and an infrared distance meter respectively; the triangular target and the irradiation lamp are respectively arranged on the rotating disc and the surface of one end, penetrating through the other side of the bearing plate frame, of the rotating disc. The structure is reasonable, diversified monitoring means are adopted, the monitoring accuracy and reliability are effectively improved, the installation process of the triangular targets is simplified, the installation number of the triangular targets is reduced, the working efficiency is improved, damage to a bridge structure is remarkably reduced, the rapid positioning function of radar equipment is achieved, and the monitoring accuracy and reliability are improved. And the monitoring efficiency is further improved.

The embodiment of the invention provides an unmanned aerial vehicle lead sag measuring device and method, and belongs to the technical field of ground wire measurement. The sag measuring device comprises a measuring device shell which is arranged on an unmanned aerial vehicle and is driven by the unmanned aerial vehicle to move; the collimator is arranged on the front face of the measuring device shell so as to aim at the wire; the laser radar range finder is arranged on the side surface of the collimator and is used for carrying out range finding on the aimed wire; the base station shell is arranged on the unmanned aerial vehicle and is driven by the unmanned aerial vehicle to move, a base station module is arranged in the base station shell, and the base station module is used for RTK positioning difference; and the integrated circuit main board is arranged in the measuring device shell, and a measuring module is arranged in the integrated circuit main board so as to calculate the measured wire distance and the positioning of the unmanned aerial vehicle. The sag measuring device can be used for quickly and conveniently measuring the wire.

The invention discloses a pole piece lamination deviation rectification method and system, and relates to the technical field of energy storage batteries, and the method comprises the steps: S100, obtaining the position of a lamination table, and determining the preset standard position of a pole piece on a deviation rectification table; s200, acquiring a preset distance between the range finder and the pole piece at the preset standard position of the pole piece; s300, the actual distance between the distance measuring instrument and the pole piece arranged on the deviation correcting table is obtained; s400, according to the actual distance and the preset distance, the deviation rectifying table is driven to move so that the pole piece can move till the distance between the pole piece and the distance meter is equal to the preset distance; and S500, executing a pole piece lamination process. The preset standard position and the actual position of the pole piece on the deviation rectifying table are obtained through the distance measuring instrument, the deviation rectifying table is directly moved, so that the pole piece reaches the required lamination position, the edge grabbing error of the pole piece is avoided, the lamination effect is better, the accuracy is higher, and the pole pieces of various specifications can be effectively laminated.

A method for detecting Global Navigation Satellite System (GNSS) spoofing is provided. The method includes receiving signals at a GNSS receiver; processing the signals to determine a calculated position; searching a list of distance measuring equipment (DME) transponders around the calculated position to select a set of DME transponders; sorting the set of DME transponders based on a respective distance between the calculated position and a respective position of each of the DME transponders; selecting a subset of the DME transponders based on the sorting; for each of the subset of the DME transponders, incrementing a counter when a difference between a real slant range, determined by communicating with the DME transponder, and an expected slant range based on height, position and known location of the DME transponder, exceeds a first threshold; and when the counter is greater than a second threshold, indicating that the position is spoofed.

The invention relates to the technical field of bridge detection, and discloses bridge crack automatic detection equipment, which is characterized in that a support column is mounted above a detection instrument to ensure the stability of the detection instrument, the height of the support column is adjusted through a hydraulic rod to adapt to bridges with different heights and spans, and the operation of the equipment can be controlled through a control panel. The device box is installed on the sliding block, various detection instruments can be placed in the device box, parameters such as the length, the width and the height of a bridge are measured through the distance measuring instrument, the vibration condition of the bridge is detected through the wireless data transmission bridge vibration detector, and the position and the depth of a concrete crack are detected through the concrete crack comprehensive detector. The industrial endoscope is used for detecting the internal structure condition of the bridge, the bridge flatness detector is used for detecting the flatness of the surface of the bridge, and all detection data are checked and recorded on the control panel so as to be conveniently analyzed and processed.

The invention discloses disturbance detection equipment for shield construction. The disturbance detection equipment comprises a mounting frame, a plurality of disturbance detection points arranged in an array and a point location early warning mechanism, the disturbance detection point comprises a base, a settlement rod, a displacement sensor, a first distance measuring head and a second distance measuring head, whether the settlement rod generates settlement displacement or not is detected through the displacement sensor, and the height change of the settlement rod is detected through the first distance measuring head; the point location early warning mechanism comprises range finders, an axis net module and an early warning module, position signals of the second range finding heads of the disturbance detection points are obtained through the range finders respectively, the position signals are fed back to the axis net module to obtain coordinate information of the disturbance point locations, an axis net diagram is generated according to the coordinate information and compared with an original axis net diagram, and when the change exceeds a threshold value, the early warning module is started. And an early warning alarm is sent to the background terminal through the early warning module. The ground surface change caused by shield disturbance is fed back in time, the accurate position of the ground surface change is obtained, the ground surface change is fed back to shield construction at any time for adjustment, and construction accidents are prevented.

The invention relates to an isolating switch closing process state detection method and device and a self-detection isolating switch. According to the method, when a switching-on signal is received, a laser range finder is synchronously controlled to rotate from a first support to a second support, then distance data collected by the laser range finder in the rotation process are obtained, and the switching-on detection result of the disconnecting switch can be determined based on the matching condition between the distance data and corresponding reference distance data. Therefore, according to the disconnecting switch closing process state detection method, the closing condition of the disconnecting switch is observed from the data dimension, and the disconnecting switch closing detection result is determined based on the measured distance data and the corresponding reference distance data, so that automatic disconnecting switch closing process state detection is realized; and the reliability of the closing detection result of the isolating switch is improved.

A histogram generating circuit generates a histogram based on respective flight information that is a time of flight or a flight distance from an emission time point of measurement light repeatedly emitted at predetermined periods to a detection time point of reflected light for respective measurement light, the histogram showing a cumulative frequency of the flight information distributed in a preset measurement range, the histogram generating circuit including: a memory circuit configured to store the histogram; and a memory processing circuit configured to associate a bin number for identifying each bin obtained by splitting the measurement range into a plurality of divisions individually in order based on the flight information with the flight information contained in each bin and the cumulative frequency, and store them in the memory circuit, thereby effectively using a limited memory area.

The invention discloses a variable code rate pseudo code distance measuring device and a distance measuring method, and mainly solves the problem of super-high altitude tracking error height of a fixed code rate pseudo code distance measuring device. Comparing the height values captured twice: if the absolute value of the height difference value captured and solved twice continuously is within a pre-value range, judging that the signal is a normal signal, and outputting an effective height to the outside; if the absolute value of the height difference value obtained through continuous two times of capturing and resolving is within the superaltitude pre-value range, it is judged that the distance measuring equipment conducts internal tracking, and invalid height is output outwards; and if the absolute value of the height difference obtained by two continuous capturing and resolving is in other conditions, judging that the distance measuring equipment performs abnormal tracking, and continuously searching to ensure that the distance measuring equipment outputs normally during super-high-altitude tracking. The method can prevent the false tracking height of the pseudo code ranging equipment, improves the interference suppression capability of the ranging equipment, and can be used for measuring the flight height in aerospace crafts or radar equipment.

The invention relates to the technical field of compaction pile construction, and discloses a pile hole depth measuring device, which comprises a frame body placed on the ground on the outer side of a pile hole; the upper part of the vertical rod is hinged with the frame body through a hinged support; the balancing weight is arranged at the lower end of the vertical rod; the range finder is mounted on the lower side of the balancing weight and faces the bottom of the pile hole; the copper plate is connected to the upper end of the vertical rod; the magnet is mounted on the frame body and positioned on the upper side of the copper plate; a gap is formed between the magnet and the copper plate; the distance measuring instrument supported by the vertical rod is used for measuring the depth of the pile hole, the structure is simple, operation is convenient, a measuring rope does not need to be wound and unwound, the distance measuring instrument can be fast and stable through electromagnetic damping, meanwhile, it can be guaranteed that the measuring direction of the distance measuring instrument is vertically downward all the time, and the measuring accuracy and efficiency are improved.

The invention discloses an error compensation method based on laser distance measuring equipment and related equipment, and relates to the technical field of data processing, and the method comprises the steps: responding to an error compensation instruction, determining target equipment to be subjected to error compensation, determining the distance measuring range of the target equipment and preset distance measuring precision, and based on the distance measurement range, the preset distance measurement precision and a preset correction interval division strategy, dividing the distance measurement range to obtain a plurality of target correction intervals, determining an error compensation value corresponding to each target correction interval, and based on the error compensation values, performing error compensation on the target equipment. The correction intervals are divided according to the ranging distance and the ranging precision, the corresponding error compensation values are set according to the different correction intervals, the compensation effect is optimized, and the overall ranging precision is improved.

The invention relates to an in-station interval multifunctional operation vehicle and a using method, the in-station interval multifunctional operation vehicle comprises a rotary telescopic mechanism and a hoisting mechanism which are installed on a walking platform, a lifting platform which lifts in the vertical direction is installed at the output end of the rotary telescopic mechanism, and the in-station interval multifunctional operation vehicle further comprises an angle monitoring module and a distance measuring instrument; hoisting operation can be carried out in a narrow operation space, an operation device integrated with an aerial work platform is integrated, the safety, efficiency and precision in the maintenance and overhaul process of the transformer substation are improved, the transformer substation can adapt to the complex environment, and manpower resources are saved; the relative positions of the hoisting mechanism and the lifting platform are automatically judged according to position data, collected in real time, of the hoisting mechanism and the lifting platform. The rotating angle is obtained through the angle monitoring module installed on the rotating shaft, the telescopic length is measured through the range finder, and the pitching angle of the hoisting mechanism is obtained through the angle sensor. By means of the data, the system calculates the lifting height of the hoisting mechanism and the lifting height of the lifting platform, and it is guaranteed that interference does not occur between the hoisting mechanism and the lifting platform.

The utility model belongs to the technical field of cantilever devices, and particularly relates to an anti-collision cantilever device which comprises a cantilever body. One side face of the cantilever body is fixedly connected with a positioning frame, and a sensor is installed in the positioning frame. Through the arrangement of the cleaning mechanism, a sensor and a range finder can be cleaned, the possibility that dust is attached to the sensor and the range finder is reduced, the anti-collision cantilever is installed on a bucket wheel machine, high-pressure gas is pumped into an air inducing pipe, a piston moves, the piston drives a rack to move, a baffle plate moves upwards, and a positioning frame is exposed; when the anti-collision cantilever and the bucket wheel machine stop, an external fan stops synchronously, a baffle plate moves downwards to conduct positioning on the positioning frame, and dust is blown into the positioning frame through a plurality of blowing pipes which are distributed at equal intervals, so that dust attached to or floating on the sensor and the distance measuring instrument is removed, and the induction sensitivity of the sensor and the distance measuring instrument is prevented from being affected by the dust. Dust is prevented from being attached to the sensor and the range finder when the bucket wheel machine does not run.

The invention relates to a vehicle-mounted radar height adjustment method and device based on composite distance measurement and machine vision, and the method comprises the steps: collecting the composite ground clearance information of a vehicle-mounted ground penetrating radar through a composite distance measurement module based on a millimeter-wave radar range finder and a single-point laser range finder in a vehicle driving process, acquiring driving condition information through a machine vision acquisition module; based on a weighted terrain clearance algorithm, the composite terrain clearance information is fused and calculated, and a composite average terrain clearance and a composite advancing pitch angle are obtained; road surface dangerous targets are detected and classified according to the driving condition information based on a machine vision model; and according to the composite average ground clearance, the composite advancing pitch angle and the detection result of the road surface dangerous target, performing adaptive ground clearance adjustment of the vehicle-mounted ground penetrating radar based on a composite distance measurement-dangerous target double-reduction mechanism. Compared with the prior art, unmanned, automatic and precise effects are achieved, and meanwhile the safety and stability of equipment are guaranteed.

The invention discloses an SINS / DME / DME integrated navigation system performance evaluation method, which comprises the following steps: according to a state equation and a measurement equation of an SINS / DME / DME integrated navigation system, calculating slope distance data calculated by a position through a strapdown inertial navigation system SINS and slope distance data measured by a distance meter DME, and fusing by adopting a Kalman filtering algorithm, specifically comprising two parts of time updating and measurement updating; evaluating the performance of the SINS / DME / DME integrated navigation system based on the actual navigation performance ANP calculation model of the filtering covariance; the method has the advantages of simple calculation, credible result and the like.

The utility model discloses an inter-mountain ranging auxiliary device, which relates to the technical field of geological exploration and comprises a bottom plate and a clamping plate, a partition plate is fixedly connected outside a vertical plate, scale plates are fixedly connected to two sides of the partition plate, a fixing plate is fixedly connected outside the vertical plate, and a driving motor is fixedly connected outside the fixing plate. A rotating rod is fixedly connected to one side of the driving motor, a rotating plate is fixedly connected to the exterior of the rotating rod, a mounting box is fixedly connected to the tail end of the rotating plate, a reading groove is formed in the exterior of the rotating plate, inclined planes are symmetrically formed in the exteriors of the two clamping plates, and a clamping mechanism is mounted between the exteriors of the clamping plates and the inner side of the mounting box; and a quick release mechanism is mounted outside the mounting box. According to the device, rapid and stable installation and convenient disassembly of the distance measuring equipment are achieved through the design of the spring and the slope, the distance between two points in a mountain land is accurately calculated through angle data of the rotating plate and direct reading of the distance measuring equipment, and a safe and efficient distance measuring solution is provided for geological exploration.

The utility model belongs to the technical field of temperature measuring and distance measuring instruments, and particularly relates to a three-kilometer distance measuring instrument with temperature measuring and distance measuring functions, which comprises a temperature measuring and distance measuring instrument main body and an eyepiece arranged on the temperature measuring and distance measuring instrument main body, and a micro motor is arranged on the top surface of the front end of the temperature measuring and distance measuring instrument main body. The micro motor is electrically connected with a control system in the temperature and distance measuring instrument body, the output end of the micro motor is fixedly connected with a connecting block, and one end of the connecting block is integrally connected with a cover plate matched with the front end of the temperature and distance measuring instrument body. According to the utility model, through mutual cooperation among the micro motor, the connecting block and the cover plate, automatic overturning of the cover plate at the front end of the temperature and distance measuring instrument main body can be realized, so that the front end of the temperature and distance measuring instrument main body can be covered, and a good protection effect is achieved.

The invention discloses a fire-fighting robot track detection device and method, and relates to the field of track detection. The mobile station and the measuring station are both provided with an equipment host and a GNSS antenna which are connected with each other. An infrared distance meter is also arranged in the measuring station; the server obtains RTCM data of the base station; the mobile station obtains the position information and corrects the position information based on a preset error according to the RTCM data to obtain positioning data; the measuring station collects attitude data and determines positioning data according to the RTCM data; and the upper computer determines advancing track information according to the positioning data and the attitude data. The track detection of the fire-fighting robot can be realized.

The invention discloses a static leveling instrument calibration device and method, a storage medium and a controller. The static leveling instrument calibration device comprises a liquid level communication tank; a first reference liquid level tank; a second reference liquid level tank; a liquid supply metering module; the first movable distance measuring module comprises a first moving assembly and a first laser distance measuring instrument; the second movable distance measuring module comprises a second moving assembly and a second laser distance measuring instrument; the controller is used for controlling the liquid supply metering module to perform quantitative liquid injection for multiple times, and according to a first current liquid level value measured by the laser range finder after each time of liquid injection, a second current liquid level value measured by the second laser range finder and an output value generated by each to-be-calibrated static force level gauge, calibration parameters of each to-be-calibrated static force level gauge are determined; and when the measuring range of the to-be-calibrated hydrostatic level gauge is greater than that of the first laser range finder, controlling the moving assembly to adjust the measuring range of the laser range finder according to the current liquid level value, and controlling the second moving assembly to adjust the measuring range of the second laser range finder according to the second current liquid level value.

The utility model discloses an auxiliary device for logging a range finder, relates to the field of geological logging, and aims to solve the problems that a tape in the prior art is aged and inaccurate in measurement information after being used for a long time, and the measurement distance of the tape flatly laid on the ground has errors due to the unevenness of the ground of a roadway. And meanwhile, accumulated water and sludge on the ground of the roadway can cause the pollution of a tape, so that the reading is difficult, and the geological record is greatly influenced and inaccurate. A geological structure line is arranged on the inner side wall of the first roadway, a second roadway is connected to one side of the first roadway, a starting measuring point is arranged in the second roadway, a distance measuring instrument is fixedly arranged on the starting measuring point, and a plurality of wall fixing devices are fixedly connected to the inner side wall of the first roadway and the geological structure line. One end of each wall fixing device is connected with a telescopic rod, and one end of each telescopic rod is connected with a signal receiving baffle.

The utility model discloses a range finder moving device, and relates to the technical field of measuring equipment, and the range finder moving device comprises a sliding plate, supporting devices are installed at the bottoms of the two ends of the sliding plate, a sliding groove is formed in the top of the sliding plate, a sliding block is slidably connected in an inner cavity of the sliding groove, and a surrounding frame is fixedly connected to the top of the sliding block. Through cooperative arrangement of the sliding plate, the sliding block, the enclosure frame, the clamping plates, a twisting handle and other structures, the two clamping plates are slidably connected into the inner cavity of the enclosure frame, when a user uses the range finder, the bottom of the range finder can be inserted into a gap between the two clamping plates, then the twisting handle is screwed into the inner cavity of the enclosure frame, and the range finder can be conveniently clamped. Due to the fact that the distance between the two clamping plates can be adjusted, the distance measuring device can adapt to installation of the distance measuring devices of different models, and the problem that an existing moving device can only fix the distance measuring devices of one model, and the distance measuring devices of different models can not be installed is avoided as much as possible. And the use of the existing mobile device has certain limitation.

The invention relates to a main shaft error testing system based on a wireless acceleration sensor. The main shaft error testing system comprises the wireless acceleration sensor, a signal receiver, a signal processor and a data processing module, the wireless acceleration sensor is used for collecting a time domain acceleration signal; the signal receiver is used for transmitting the signal to the signal processor; the signal processor is used for storing the signal received by the signal receiver and exporting the signal to the data processing module; and the data processing module is used for calculating the time-domain acceleration data and converting the time-domain acceleration data into rotation errors of the high-precision main shaft or the rotary table. The main shaft error testing system has the advantages of being simple, easy to operate, low in cost and the like; a standard workpiece and a precise distance measuring instrument are not needed, the test can be completed only through the wireless acceleration sensor, and error separation of test data is not needed; precise distance measuring instruments such as a laser interferometer are not needed, and the environment adaptability is good.

The present invention comprises: a plurality of light-emitting elements; a plurality of light receiving elements; and a determination means for determining, as a time of flight of the signal light for distance measurement, a time from emission of light from any of the plurality of light-emitting elements to reception of reflected light of the emitted signal light from any of the plurality of light-receiving elements. Among the plurality of light-receiving elements, a first light-receiving element receives reflected light and ambient light, the reflected light being signal light that has been emitted by a first light-emitting element among the plurality of light-emitting elements and has been reflected by the subject, each of the plurality of light-receiving elements including a plurality of sub-light-receiving elements, and a determination section obtaining a reference value from a measurement result of the time of flight measured using the detection signal of a first sub-light-receiving element, the first sub-light-receiving element being a portion of the first light-receiving element, the reference value indicating a measurement result of the ambient light that has been measured for each light-receiving element, and determining a time of flight of signal light for ranging in relation to the subject by using both: a reference value; and a measurement result of the time of flight measured using a detection signal of a second sub-light-receiving element that is included in the first light-receiving element and is different from the first sub-light-receiving element.

The utility model relates to the technical field of distance measuring instruments for electric power construction, in particular to a distance measuring device for electric power construction. According to the technical scheme, the device comprises a mounting frame and a laser range finder, the mounting frame comprises a mounting plate, a placement plate is arranged on one side of the mounting plate, a mounting table is arranged above the placement plate, a large gear is arranged at the position, located below a reinforcing rib plate, above the placement plate, and an adjusting gear is arranged on one side of the periphery of the large gear; a positioning mechanism is arranged at the position, located below the adjusting gear, of one side of the containing plate, and a mounting clamping base is arranged above the large gear. According to the utility model, the laser range finder is matched with the mounting rack, so that an operator can quickly mount and position the device during power construction, the stability of the device in an operation state is ensured, and the operator can accurately adjust the measurement angle according to the operation requirement through the positioning mechanism matched with the large gear and the adjusting gear; therefore, accurate measurement can be better carried out during power construction operation.

The utility model discloses a building range finder, which relates to the range finder technical field, and comprises a pedestal, the upper side of the pedestal is provided with a telescopic rod, the top end of the telescopic rod is provided with a first U-shaped block, one side of the first U-shaped block is provided with a transmission hole, the transmission hole is internally provided with a transmission shaft, the surface of the transmission shaft is provided with a first connecting block, and the first connecting block is provided with a second connecting block. A second U-shaped block is installed on the upper side of the first connecting block, through holes are formed in the two sides of the second U-shaped block, fastening bolts are rotatably installed in the through holes, a second connecting block is installed on the surface of each fastening bolt, a platform is installed on the upper side of each second connecting block, and a range finder body is installed on the upper side of each platform. According to the surveying instrument, the first U-shaped block is subjected to primary adjustment through rotation in sequence, and then the second U-shaped block is subjected to secondary adjustment through secondary rotation, so that the surveying instrument body is subjected to horizontal adjustment, and the accuracy of distance measurement data is improved.