48results about How to "Accurate detection and positioning" patented technology

The invention discloses a method for detecting damaged pore position of leakproof geomembrane, comprising the steps as follows: firstly, a positive electrode and a negative electrode are arranged respectively on the upper surface and the lower surface of the geomembrane; subsequently, electric potential forms on the upper surface and the lower surface of the geomembrane; subsequently, an electric potential difference movable detector with a reference electrode is employed to sample and detect the electric potential difference of the coverage layer of the geomembrane; finally, the leaked and damaged position can be detected by data processing. The invention also discloses a device for detecting leaked and damaged pore position of leakproof geomembrane, comprising an excitation power supply and the electric potential difference movable detector which is provided with the reference electrode and is used for sampling and detecting the electric potential difference of the coverage layer of the geomembrane. Under a situation that the upper surface of the geomembrane is provided with the coverage layer, the method and the device can exactly detect and position the damaged pore position, repair the damaged pores in time after the coverage layer of the geomembrane is excavated and the pores are exposed, fill the garbage or accumulated water subsequently, effectively prevent garbage leachate containing harmful substance from being leaked outside the landfill site to pollute the underground water, and eliminate the harm to the survival of peripheral people, animals and plants.

The invention proposes an object detection and location method and system based on depth data. The method comprises the steps of acquiring a depth map by using depth data acquired by a depth data sensor, constructing a background model of the depth map, acquiring an object foreground region under the perspective of the depth map, and carrying out initial segmentation of the object foreground region; mapping the object foreground region after the perspective of the depth map to an overhead perspective by using a projection matrix, and segmenting the object foreground region under the overhead perspective again according to the location difference of an object in the horizontal space; extracting depth features of the foreground region, training an object detection module, and carrying out detection positioning for adhered objects by using the object detection module; and carrying out three-dimensional coordinate location correlation tracking for detection positioning results on an overhead map, mapping the detection positioning results to an original depth map coordinate, and obtaining a final object detection result. The invention can complete accurate object detection and location in a quick and robust manner under severely blocked and changing illumination conditions.

The invention, which is suitable for the machine vision field, provides a method and apparatus for measuring a vehicle distance and an automobile. The method comprises the following steps that: two cameras of a binocular vision system are used to collect images of scenes in front of a current vehicle synchronously; a candidate license plate region in the image collected by each of the cameras is obtained and a feature vector corresponding to each candidate license plate region is extracted; whether the candidate license plate region corresponding to each of the feature vectors is a real license plate region; a center position of the real license plate region is calculated; and according to the center position as well as a binocular stereo vision measurement principle, a distance between the current vehicle and a vehicle in front of the current vehicle is calculated. According to the invention, rapid and accurate detection and positioning on an automobile license plate in a complex background image is realized; and the distance between the current vehicle and a vehicle in front of the current vehicle in the vision angle range of the camera is calculated. The measurement range is large; and the measuring process can be realized simply and conveniently; and the performance for measurement is stable.

The invention discloses a liquid conveying pipeline leakage and sewage blocking detection method based on a frequency domain. According to the method, a signal generator is controlled by a data processor and generates a needed simulation signal; a receiving circuit detects potential difference signals on a receiving electrode in real time, and transmits the potential difference signals to a data sampling device; the data sampling device acquires the potential difference signals transmitted by the receiving electrode at regular time; Fourier transform is performed on the acquired potential difference signals to generate positioning curves; when a probe moves near a defective point, an electric field is affected by the defective point, so that the potential differences received by the receiving electrode change; and the defect of a pipeline is detected according to the change of the positioning curves, and the defect can be positioned according to the relative positons of the probe and the defective point in the positioning curves. The method is widely applied, and is particularly applicable to internal inspection for conveying pipelines for liquid such as crude oil, refined oil, industrial dangerous liquid, sewage or electric conduction media containing pollutants in severe working environments.

The invention relates to a relief well and accident well connection detection system and a detection method thereof. The detection system comprises a three-component magnetic core probe and a transmission unit and the like. The three-component magnetic core probe consists of a Z probe, an X probe, and a Y probe, wherein each two of the Z probe, the X probe, and the Y probe are perpendicular to each other; and the X probe, the Y probe and the Z probe include transmitting coils and receiving coils respectively. The transmitting unit is used for transmitting a transient excitation signal; the transmitting coils of the Z probe, the X probe, and the Y probe receive transient excitation signals and spread the transient excitation signals to an accident well by a relief well to generate a Z-direction induction signal, an X-direction induction signal, and a Y-direction induction signal; the receiving coils of the Z probe, the X probe, and the Y probe receive the Z-direction induction signal, the X-direction induction signal, and the Y-direction induction signal correspondingly and respectively; the received Z-direction induction signal, X-direction induction signal, and Y-direction induction signal are transmitted to a ground unit by a receiving unit and a collection and transmission unit; and the ground unit calculates a distances between the accident well and the three-component magnetic core probe and directions of the accident well and the three-component magnetic core probe according to the Z-direction induction signal, the X-direction induction signal, and the Y-direction induction signal and then the information is displayed.

The invention discloses an automatic horizontal flue-cured tobacco bale loosing device of a tobacco slice making line in a cigarette factory. The automatic horizontal flue-cured tobacco bale loosing device consists of an upper stander (6) and a lower stander (15), wherein a conveyer (23) is arranged at the lower end of the upper stander (6); a clamping cylinder and a push plate (14) are arranged above the conveyer (23); the upper part of the upper stander (6) is connected with mounting bases (10) through a chain and chain connection pins (26); the mounting bases (10) are connected with clamping legs (9); the clamping legs (9) are connected with a clamping leg driving cylinder (11) through connection blocks; the inner sides of the clamping legs (9) are connected with an insertion cutter driving cylinder (18) with an insertion cutter (19); the clamping legs (9) on two sides are connected through a crank sliding block mechanism (21). The automatic horizontal flue-cured tobacco bale loosing device is easier to manufacture, high in production efficiency, low in cost, easy to mount, safer, more stable and more humanized; the smashing rate is lower, and the tobacco back-permeation rate is higher.

The invention relates to a low-power-consumption water level telemetering system based on an artificial intelligence cloud recognition water gauge. The system comprises a telemetering station, a central station server and a cloud server. The central station server is in communication connection with the client computer through a local area network or the Internet. The telemetering station comprises a network camera aligned with the water gauge, a telemetering terminal, a storage battery for supplying power, and a solar panel for charging the storage battery. The network camera collects imagesof the water gauge, saves the images and sends the images to the cloud server, the cloud server identifies the images and transmits water level data back to the telemetering station, and the telemetering station processes the water level data and sends the processed water level data to the central station server. The system is low in power consumption, low in cost and high in environmental adaptability; according to the invention, not only can quasi-water-level data be measured, but also images shot on site can be seen clearly, and manual data calibration on site is not needed any more throughimage comparison, so that the implementation effect is good.

The invention discloses a slideway type detecting positioning instrument which is used for detecting objects such as wood and metals hidden in walls during house decoration, maintenance, object installation and the like and positioning and marking detected objects. The instrument comprises a main ruler, two auxiliary rulers, an ultraviolet (UV) strip, a horizontal level gauge, a vertical level gauge, two sucking disc fixing devices, two sliding rails, a detector and a scriber, wherein a slideway groove and an UV strip groove are arranged on the main ruler, two auxiliary rulers are installed inside the slideway groove of the main ruler, the main ruler and auxiliary rulers are combined to form a slideway type detecting positioning instrument body, the UV strip is installed inside the UV strip groove of the main ruler, buckles are arranged on the horizontal level gauge and the vertical level gauge, sliding rail installation positions are arranged on the main ruler, two sliding rails are fixed inside sliding rail installation positions of the main ruler in an up-and-down mode, the detector and the scriber are installed on sliding rails, sucking disc fixing devices are arranged at two ends of the main ruler, the horizontal level gauge and the vertical level gauge are installed on two sides of the slideway groove, and sealing covers are arranged at two ends of sliding rails.

The invention relates to a video abnormal event detection method and a chip. The method comprises the following steps: acquiring a to-be-detected video; using the to-be-detected video to obtain at least two to-be-detected images arranged according to a time sequence; determining the spatial similarity between the adjacent to-be-detected images to obtain the spatial change feature of the to-be-detected video, wherein the spatial change feature comprises a change rule of spatial similarity according to a time sequence; determining the time sequence similarity between the adjacent to-be-detected images, and obtaining the time sequence change feature of the to-be-detected video, wherein the time sequence change feature comprises a change rule of the time sequence similarity according to a time sequence; fusing the spatial change feature and the time sequence change feature to obtain a fused change feature; utilizing a pre-trained detection model to determine whether the fusion change feature is abnormal or not; and if so, determining that an abnormal event exists in the to-be-detected video. According to the scheme, the video abnormal event identification efficiency can be improved.

The invention discloses a visual positioning device of a carton stack dismounting system. The visual positioning device is provided with a robot module and a visual positioning module, wherein the robot module comprises a stack dismounting mechanical hand; the visual positioning module is provided with an industrial camera, a displacement sensor and an industrial controller, wherein the industrialcamera is used for taking a stack type of a to-be-dismounted stack and material plane position information; the displacement sensor is arranged on the stack dismounting mechanical hand, and is used for obtaining distance information from the stack dismounting mechanical hand to a material plane; and the industrial controller is connected with the stack dismounting robot, the industrial camera andthe displacement sensor through circuits to receive data from the industrial camera and the displacement sensor, and to control the stack dismounting mechanical hand to move. The visual positioning device can quickly and accurately detect and position materials on the to-be-dismounted stack, improves operating efficiency, and reduces labor cost.

The invention relates to an improved target object rapid detection method based on an SSD network. The improved target object rapid detection method is characterized by comprising the following steps:1) creation of an improved SSD network; (2) image data set acquisition, (3) network training and testing and (4) target detection. The method is scientific and reasonable in design, is suitable for the quick real-time detection of a target object, can reduce the network parameters, improves the network calculation efficiency, and is high in detection precision and speed compared with a standard SSD network.

The invention relates to an automatic wall-climbing type outer wall detection system. A roof track is fixedly arranged along the edge of a roof, a roof pulley capable of sliding along the roof track is arranged on the roof track, and a ground pulley is connected with the roof pulley through a flexible connecting part; a wall-climbing robot capable of moving up and down along the flexible connecting part is arranged on the flexible connecting part, the wall-climbing robot extends out of the wall surface to form a telescopic mechanical arm, and local detection equipment is arranged at the frontend of the telescopic mechanical arm. The system can achieve the comprehensive coverage of the outer wall of a building through walking arrangement, and safety and reliability are achieved; the localdetection equipment such as an ultrasonic detection instrument, a radar detection instrument, a knocking force hammer and a sound acquisition instrument can be selectively carried to realize large-area rapid automatic inspection of internal defects of an external wall external thermal insulation system or an external wall facing brick system.

The invention discloses a fingerprint minutiae detection method, which comprises the following steps of: a collected fingerprint image is received; the fingerprint image is input to the pre-trained fingerprint minutiae detection model; a fingerprint minutiae detection model is a full convolution neural network based on convolution neural network training for fingerprint sample image; the minutiaefeature of fingerprint image is extracted by the downsampling unit in the minutiae detection model; the position information of minutiae is reconstructed by the upsampling unit in the minutiae detection model, and the minutiae position image is obtained. The method can detect and locate fingerprint minutiae with high precision, anti-jamming ability and strong robustness through full convolution neural network. The invention also discloses a fingerprint minutiae detection device, a system and a readable storage medium, which have the beneficial effects.

The invention provides an infrared detection device of a second generation resident identification card. An infrared transmitting tube is arranged at one side of the infrared detection device of the second generation resident identification card and the other side thereof is provided with an infrared receiving tube. The method takes a paddle vat as symmetry best, ultraviolet light source and a light sensor are arranged at the two sides of the device, gaps are left at the two sides of the paddle vat so that the ultraviolet light can irradiate on the identification card conveniently, thereby realizing the aim of utilizing the ultraviolet light to detect the identification card. The device is specially used for detecting the second generation identification card by infrared ray and is characterized by simple operation and use, accurate detection and positioning, and so on.

The invention relates to a temperature effect based concealed wire detector and belongs to the technical field of electronic measurement. The temperature effect based concealed wire detector comprises a single-chip microcomputer, a temperature sensor array and a sound and light alarm device, the output end of the temperature sensor array is connected with the input end of the single-chip microcomputer, and the output end of the single-chip microcomputer is in control connection with the sound and light alarm device. Wall temperature changes are detected through the high-precision temperature sensor array according to the principle that concealed wires generate gentle heat in the process of energilization, and the sound and light alarm device is controlled to give an alarm when the temperature difference of sensors in the array is larger than a set value, and accordingly detection of the concealed wires in the wall is realized. The temperature effect based concealed wire detector is simple in structure, convenient to use, high in practicality, accurate in detection and positioning and small in error, and the problem that accurate positions of the concealed wires are difficult to search in building construction at present is solved.

The invention relates to the technical field of rail area equipment limit detection of rail traffic, and provides a positioning sliding trolley capable of automatically tracking the central line of a rail in real time. The positioning sliding trolley capable of automatically tracking the central line of the rail in real time comprises a trapezoid vehicle frame, wherein a first walking wheel is arranged at a left end beam of the vehicle frame, a second walking wheel and a third walking wheel are arranged at a right end beam of the vehicle frame, a middle longitudinal beam is arranged in the middle of the vehicle frame, two linear guide rails are arranged on the vehicle frame, a primary micro moving sliding block and a secondary micro moving sliding block are arranged on the two linear guide rails, a main shaft end portion of the first walking wheel penetrates out of a linear bearing hole embedded in the left end beam, a limiting retaining shoulder is arranged at the end portion of the main shaft end portion, a pre-tightening adjusting rod is arranged on the middle longitudinal beam, two pressure springs of the same rigidity are arranged between the limiting retaining shoulder and the primary micro moving sliding block and between the primary micro moving sliding block and the pre-tightening adjusting rod respectively, and the primary micro moving sliding block and the secondary micro moving sliding block are respectively provided with a detection device. By means of the positioning sliding trolley capable of automatically tracking the central line of the rail in real time, the walking wheels are attached to the steel rail, and efficient, continuous and accurate detection positioning of two different kinds of measuring bases is achieved.

The invention discloses a locating method and device of coke block from transmission line rotary table to receiving device, which is characterized by the following: adapting three couples of photoelectric switch to detect the coke block on the rotary table; setting two couples of photoelectric switch on two edges of rotary table separately; making the right rotation coke block lying between two couples of photoelectric switch axle without detecting by switch; setting the third couples of photoelectric switch between two couples of photoelectric switch to detect the coke block on the rotary table. The invention can detect and locate the coke block, which prevents coke block from colliding or blocking when the coke is pushed to the receiving device by rotary table.

The invention discloses a vehicle monitoring system for an expressway. The vehicle monitoring system is simple in structure, a U-shaped placing gap helps a blank information card to be placed, and thecard is prevented from being lost. A sucker is used for help a driving device to be fixed in the front of a vehicle, and helps with accurate video recording and sound recording. Once the monitoring system needs to cooperate with an investigation department for vehicle tracking, it is convenient for the investigation department to conduct investigations, and if the vehicle is in danger, it is convenient for the monitoring system to conduct investigation; each blank information card becomes a card with information after vehicle information is recorded, and real-time information detection and emission can be performed; an image recording module helps to record vehicle accidents vehicle failure or failure of others in the later stage; and if the speed suddenly drops and becomes zero, a warning device is immediately started to make an alarm, which can help the vehicle to directly alarm and can greatly improve the safety of the owner.

The invention relates to a visual detection method for the assembling defects in a metal oxide arrester for electric power. In the visual detection method provided by the invention, a means that the electric measurement and the waveform observation are taken to be principal and the X-ray perspective radiation is taken to be auxiliary is adopted to realize the rapid diagnosis of the assembling defects in the metal oxide arrester for the electric power; the two ends of a discharge counter which is provided with an electric arrester are used for monitoring the voltage waveform through a common oscilloscope, and if the voltage waveform contains high-frequency and high-amplitude noise waves, the metallic suspended particle defect exists in the arrester; and by virtue of an X-ray perspective radiation means, the main point is that the visual expression of the structure feature in the arrester can be realized near the bottom of a single-section arrester, thereby directly determining that the defect exists in the arrester. The visual detection method provided by the invention mainly integrates an electric detection means and an X-ray perspective radiation technique to realize the rapid positioning and determination of the assembling defects in the metal oxide arrester for the electric power, and has the obvious advantages of concise structure, high efficiency, defect shape visualization and the like.

The invention relates to the technical field of network vulnerability detection, in particular to a network equipment vulnerability detection method, which comprises the following steps of: (1) IP scanning: scanning an IP network segment configured by network equipment; (2) routing detection: detecting IP addresses in an active IP list; (3) routing vulnerability scanning: judging whether the detected equipment has security weakness or not; (4) automatic vulnerability utilization: carrying out active vulnerability utilization on the network equipment with the vulnerability; (5) automatic decryption: decrypting a password detected via the vulnerability; (6) detection reporting: a complete detection report on detection results of a detected network segment is generated. Loopholes of the network equipment such as a router and a switch are automatically detected and accurately recognized, the detection time is greatly shortened, manpower and time are saved, and the safety of the network equipment is effectively improved.

The invention discloses a slideway type detecting positioning instrument which is used for detecting objects such as wood and metals hidden in walls during house decoration, maintenance, object installation and the like and positioning and marking detected objects. The instrument comprises a main ruler, two auxiliary rulers, an ultraviolet (UV) strip, a horizontal level gauge, a vertical level gauge, two sucking disc fixing devices, two sliding rails, a detector and a scriber, wherein a slideway groove and an UV strip groove are arranged on the main ruler, two auxiliary rulers are installed inside the slideway groove of the main ruler, the main ruler and auxiliary rulers are combined to form a slideway type detecting positioning instrument body, the UV strip is installed inside the UV strip groove of the main ruler, buckles are arranged on the horizontal level gauge and the vertical level gauge, sliding rail installation positions are arranged on the main ruler, two sliding rails are fixed inside sliding rail installation positions of the main ruler in an up-and-down mode, the detector and the scriber are installed on sliding rails, sucking disc fixing devices are arranged at two ends of the main ruler, the horizontal level gauge and the vertical level gauge are installed on two sides of the slideway groove, and sealing covers are arranged at two ends of sliding rails.

The present invention proposes a target detection and positioning method and system based on depth data, including: using the depth data collected by a depth data sensor to obtain a depth map, constructing a background model of the depth map, and obtaining the target foreground area under the perspective of the depth map, Carry out preliminary segmentation of the target foreground area; use the projection matrix to map the initially segmented target foreground area to the top-view perspective, and re-segment the target foreground area under the top-view perspective according to the position difference of the target in the horizontal space; extract the foreground area Depth features and training to get the target detection model, use the target detection model to detect and locate the sticky target; carry out the associated tracking of the three-dimensional coordinate position on the detection and positioning results on the top view, and then map the detection and positioning results to the coordinates of the original depth map, Get the final target detection result. The invention can quickly and robustly complete the accurate detection and positioning of the target in the case of severe occlusion and illumination changes.

The invention discloses a liquid leakage detection positioning device, system and method. The device comprises a signal line arranged in a framework, a first sensing line and a second sensing line, the first sensing line and the second sensing line are evenly distributed in resistance, the two sensing lines are arranged side by side, the first sensing line is connected with an external resistor R1, the first sensing line and the signal line connected with an external resistor R2 form a loop, the second sensing line is connected with an external power supply, when liquid leaks, the second sensing line is conducted with the first sensing line, the first sensing line is divided into an Rleakage resistor and an Rline-Rleakage resistor, the Rleakage resistor and the Rline-Rleakage resistor form loops with the R1 and the R2 respectively, voltage values V1 and V2 of the R1 and the R2 are obtained, the Rleakage is correspondingly obtained, and the position of a water leakage point on the first sensing line is obtained based on the ratio of the Rleakage to the Rline. Through the scheme of the invention, the device can timely know the position of a water leakage point, is convenient to maintain, and guarantees the normal operation of a data center and other systems.

The invention relates to a vehicle-mounted road positioning radar device with double-wave and an implementation method thereof, which is capable of detecting and positioning the precise position of the vehicle rapidly, accurately, repeatedly, and freely from environmental impact, and capable of transmitting data to a management platform through the mobile internet. The radar device comprises a radar positioning control unit, a communication unit, a power supply unit, a mobile phone application, and a passive digital sensor which is arranged in a related to-be-detected positioning subject object to receive energy from electromagnetic waves and capable of bi-directional communication. The radar positioning control unit comprises two groups of identical electromagnetic wave generating circuits and two groups of demodulation circuits thereof connected to an antenna A and an antenna B respectively, wherein the antenna A and the antenna B are arranged under the vehicle chassis; a control unit is composed of an ATmega8 single-chip microcomputer and a corresponding auxiliary circuit; the radar positioning control unit is connected to the communication unit and the power supply unit in sequence; the two inputs of the power supply unit are connected to the vehicle battery for supplying power thereto; and the mobile phone application is connected with the communication unit through a WiFior a Bluetooth wireless network.