52results about How to "Realize distance measurement" patented technology

The invention discloses a monocular vision lane line detection method and a distance measurement method of the monocular vision lane line detection method and belongs to the field of vehicle driving safety auxiliary systems. The lane line detection method comprises the steps of shooting multiple frames of images when a vehicle is just started to obtain a reference lane line, then obtaining candidate real-time lane lines by every reading of a real-time image, performing region matching on the candidate real-time lane lines and the reference lane line, and if the region matching is successful, updating an inclination angle and outputting the reference lane line; if the region matching is failed and the failure emerges for the first time, recording the candidate real-time lane lines as temporary lane lines, if the failure emerges continuously and the reference lane line can be continuously successfully matched with the temporary lane lines, outputting the temporary lane lines. A distance between a body vehicle and a target vehicle can be calculated by setting a reference target on the basis of a projection relation between the reference target and the target vehicle in a vision collection system according to the lane line image detected by the method disclosed by the invention. The monocular vision lane line detection method and the distance measurement method of the monocular vision lane line detection method are suitable for vehicle lane line detection and distance measurement between two vehicles.

The invention provides 3D solid-state area array laser radar and a distance measuring method thereof. Long-distance accurate measurement can be realized on the basis of the solid-state area array laser radar. A laser source emits high-energy laser, after the emitted laser is focused by a divergent lens, an emitted view angle is equal to a received view angle of a receiving lens, so that distance measuring beam energy of the laser radar is concentrated, measuring distance limitation is broken through, and long-distance measurement is realized; multiple photosensitive elements are arranged on aphotoelectric receiving processor, modulated light reflected by obstacles can be received simultaneously, relative distance of multiple points is obtained through processing, and distance measuring accuracy and working efficiency are improved. On the basis of realization of the long-distance measurement by the 3D solid-state area array laser radar, the solid-state area array laser radar provided with an infrared LED light source realizes short-distance and large-view-field distance measurement, can realize long-distance and short-distance measurement and meets different measurement requirements.

The invention discloses a method and device for measuring the distance between a power transmission line and a target object, and electronic equipment. The method comprises the steps: receiving background point cloud and a two-dimensional background image of a corridor scene of the power transmission line; constructing a coordinate transformation relationship between the background point cloud andthe two-dimensional background image; selecting feature points from the background point cloud and the two-dimensional background image to construct a mapping relationship between each pixel coordinate in the two-dimensional background image and each three-dimensional point coordinate in the background point cloud; receiving a real-time two-dimensional image of the power transmission line corridor scene, and judging whether a target object appears in the real-time two-dimensional image or not; when the target object appears, calculating the three-dimensional point coordinates of the target object in the background point cloud according to the pixel coordinates of the target object and the mapping relationship, and searching the three-dimensional point coordinates of the power transmissionline closest to the target object; and calculating the Euclidean distance between the target object and the power transmission line according to the three-dimensional point coordinates of the targetobject and the three-dimensional point coordinates of the power transmission line. The method can solve the problem that the measurement mode of a traditional handheld laser range finder is large in error.

The present invention relates to a dual-laser driving circuit and a scanning laser radar ranging device and method. The circuit comprises a voltage doubler unit for outputting a pulsed high voltage toa first node when a first driving pulse signal is received, a power storing and releasing unit used for storing electric energy when a pulse voltage is present at a first node, releasing a first electric quantity to a second node when a second driving pulse signal is received and releasing a second electric quantity to the second node when a third driving pulse signal is received, and a light emitting unit which is used for generating a laser signal of first power when the first electric quantity is inputted at the first node and generating a laser signal of second power when the second electric quantity is inputted at the second node. The scanning laser radar ranging device is realized based on the above circuit. The method is realized based on the above device. According to the embodiment of the present invention, the requirements of human eye safety by near-distance laser power can be ensured, stray light at a close range is filtered, far-distance and near-distance ranging is achieved, and the ranging ability of a lifting device is improved.

The invention relates to a safe work distance measuring and early-warning method of an aerial lift device with an insulated arm. Supersonic sensor are arranged in upper front, rear, left, right and lower positions of the arm respectively, power is supplied to different devices, and a minimal safe distance of early warning is set; a single-chip microcomputer STM32 is arranged to send range finding pulse signals to the supersonic sensors; a measuring-end device forwards measured distance data to an early-warning device in a console of the aerial lift device via a WiFi module; the early-warning device receives data via the WiFi module, received data is displayed on a display, and a minimal distance value is selected from the received data after processing; the minimal distance value is compared with the preset minimal safe distance value, and whether alarming is raised is determined; and the single-chip microcomputer STM32 emits an early-warning signal to drive an acousto-optic alarm and implements braking. The safe work distance measuring and early-warning method can improve the safety and reliability of maintenance, transmit range finding information stably, realize effective early warning, enable an operator to monitor the distance between the arm and power cables as well as the distance between the arm and a large transformer and the like in real time, and reduce power accidents.

The invention discloses a method for measuring a goods distance based on binocular vision. The method comprises the following steps: a binocular image is obtained from a binocular camera, and the obtained image is subjected to preprocessing; camera parameters are obtained by a camera parameter calibration algorithm, and an imaging model is established; SIFT features of the binocular image are extracted, and the binocular image is subjected to stereo matching according to the extracted features; and the distance between goods and the camera is calculated and converted into the distance between the goods. Based on computer binocular vision principles, the method realizes reasonable placement of warehouse shelves, achieves reasonable warehouse position allocation of newly warehoused goods according to the own characteristics of a warehouse, and reduces the work intensity of a warehouse manager.

The application discloses a distance measuring method, an equipment, a device and a storage medium, relates to the field of mobile terminals. The distance measuring method comprises the following steps that: an acoustic wave generator transmits a band pass noise signal to a predetermined direction; an acoustic wave receiver receives a mixed signal, extracts a feature of the mixed signal to obtaina spatial feature quantity, and finally performs acoustic wave interference analysis according to the spatial feature quantity to obtain an obstacle distance in the predetermined direction. Accordingto the distance measuring method, the equipment, the device and the storage medium, after acoustic waves are transmitted through acoustic wave devices such as microphones and earphones, distance measurement between a terminal and the obstacle is realized by utilizing the acoustic wave interference analysis, and the distance between the terminal and the obstacle can also be measured, when a front panel of the terminal is not provided with a distance sensor.

The invention discloses a distance measuring system for cable laying distance measurement. The distance measuring system comprises a laser distance measuring instrument, multi-angle rotating mirrors and a reflector, wherein the laser distance measuring instrument, the multi-angle rotating mirrors and the reflector are all arranged in a cable shaft; the laser distance measuring instrument is arranged at one end of a distance measurement path below the cable shaft, and the reflector is arranged at the other end of the distance measurement path; in the distance measurement path, the multi-angle rotating mirrors are arranged; laser emitted by the laser distance measuring instrument enters the reflector after being sequentially reflected by the multi-angle rotating mirrors and then is sequentially reflected by the multi-angle rotating mirrors back to the laser distance measuring instrument; the laser distance measuring instrument comprises a single-chip microcomputer, a distance measurement display module, a temperature detecting module, an alarm module, a driving circuit, a laser transmitting probe, a laser receiving probe and a signal processing circuit. The distance measuring system for cable laying distance measurement has the advantages of the capability of measuring nonlinear distance, realization of the distance measurement of lines with turning points, improvement on convenience in cable laying and the like.

The invention discloses a robot anti-collision device. The device comprises a controlling block, wherein the controlling block is provided with a chamber, four vertical rods are rotationally arrangedat the bottom of the controlling block, two steering wheels and two driving wheels are arranged at the bottoms of each two vertical rods on the same side, the sides, close to each other, of the four vertical rods are fixedly provided with the same mounting block, the mounting block is provided with a driving mechanism, the sides, close to each other, of two driving wheels are provided with the same driving shaft, the driving shaft is in transmission connection with the driving mechanism, and the tops of the two vertical rods on the same side are fixedly provided with steering shafts. Accordingto the robot anti-collision device, the information of the distance between the device and obstacles is fed back, the conditions of obstacles on the two sides of steering are fed back, a buffer device or certain devices capable of bearing strong impact force do not need to be arranged, the device can travel by bypassing the obstacles, the ability is strong in the case of obstacles of simulated reality, a new chapter is opened for subsequent research of robots, and the device is worthy of wide popularization.

The invention provides a laser radar, an autonomous mobile robot and an intelligent vehicle, and relates to the technical field of detection. The laser radar comprises a ranging unit; the ranging unitcomprises a photoelectric proximity sensor chip and a collimation focusing element, and the collimation focusing element is arranged in a ranging light path of the ranging unit; the ranging light path comprises an emitting light path between an emitting window of the photoelectric proximity sensor chip and an object to be measured and a receiving light path between the object to be measured and areceiving window of the photoelectric proximity sensor chip; the ranging unit emits laser beams through the emitting window, and the laser beams are received by the receiving window after being collimated or focused by the collimation focusing element and reflected by the object to be measured so as to realize the distance measurement of the object to be measured. Therefore, the angle resolutionin the distance measurement is improved by focusing a detection laser beam through the collimation focusing element; and by adopting the mass-produced highly integrated photoelectric proximity sensorchip, the cost and the manufacturing difficulty of the laser radar are reduced.

The embodiment of the invention relates to the technical field of communication, and discloses a method, device and system for detecting merchant false transactions and a computer readable storage medium. The method for detecting the merchant false transaction provided by the invention comprises the following steps: acquiring transceiving data of a Bluetooth signal of a mobile terminal in a merchant store; Obtaining the meal delivery amount of the merchant within the preset time; And determining whether the merchant has a false transaction or not according to the receiving and sending data andthe meal delivery amount. According to the method, device and system for detecting the merchant false transaction and the computer readable storage medium provided by the invention, whether the merchant false transaction exists or not can be determined without the need for workers to go to the site for investigation, so that the labor cost is reduced.

The invention discloses a distance measurement method and system. The system comprises a first fixed marker post which is disposed at a starting point and provided with a first beacon and a second beacon. The first fixed marker post is perpendicular to the ground plane. The first beacon and the second beacon are located at different height positions. The system further comprises a second marker post which is arranged at a target point and provided with information sources. The second marker post is kept perpendicular to the ground plane. The first beacon and the second beacon are in wireless communication with the information sources respectively, so as to acquire the signal transmission time differences between the first beacon and the information source and between the second beacon andthe information source. Measurement of the distance between the first beacon and the information source and measurement of the distance between the second beacon and the information source are acquired, and finally the distance between the starting point and the target point is acquired. According to the invention, distance measurement is realized by utilizing the combination of a plurality of information sources and beacons; the measurement of the distance between the starting point and the target point is realized; and the influence of inconsistent altitudes of two positions is avoided.

The invention discloses a method for measuring a distance by parallax of an object on an image. The method comprises calibrating an infrared binocular camera to obtain inner parameters and structural parameters of a system, calculating a baseline distance, extracting significant characteristics of the binocular image through a visual significance model, and determining a significant target distance. Compared with the conventional technology, the method for measuring a distance by parallax of an object on an image can realize significant characteristic extraction of the binocular image and significant target division, reduce an object range, reduce matching time, improve efficiency, calculate parallax through significant target key point matching and measure a distance. The object is on a vertical surface so that error matching key points are well screened and accuracy is improved.

The invention provides a laser inclination measuring device for electric power tower detection, and relates to the technical field of electric power tower detection equipment.The device comprises a support base. A triangular support is fixedly connected to the lower portion of the support base. A U-shaped frame is fixedly connected to the upper surface of the support base. A rotating ring is rotationally connected to the middle of the U-shaped frame. A first motor is fixedly connected to the outer side of the U-shaped frame, and an output shaft of the first motor is connected with and drives a side shaft of the rotating ring through a coupler. A measuring instrument body is rotationally connected to the middle of the rotating ring, and a middle cylinder of a cylindrical groove body structure is arranged in the middle of the measuring instrument body. The device is not limited by terrains, can be conveniently adjusted, is easy to operate, can be directly placed at any position below an iron tower for use, and solves the problem that a plumb method has large errors and low precision due to the influence of environments and human factors and the problem that a theodolite method needs to be matched with an artificial prism, meanwhile, an instrument needs multiple times of station setting, and the method is greatly influenced by human factors, is low in precision and is easily limited by terrains.