241results about How to "Realize all-round detection" patented technology

The invention discloses a remote obstacle detection method based on laser radar multi-frame point cloud fusion. A local coordinate system and a world coordinate system are established, an extraction feature point of each laser point is calculated on an annular scanning line of the laser radar according to the original point cloud data under the local coordinate system, and the global pose of the current position relative to the initial position and the de-distortion point cloud in the world coordinate system are obtained through inter-frame feature point matching and map feature point matching; the de-distortion point clouds of the current frame and the previous frame are fused to obtain more compact de-distortion point cloud data, which is unified to the local coordinate system, then projection is performed on two-dimensional grids, and an obstacle is screened according to the height change features of each two-dimensional grid. According to the method in the invention, the problem that the detection rate of the remote barrier caused by sparse laser point clouds is low is solved, the remote barriers can be effectively detected, the error detection rate and the leak detection rateare low, and the system cost can be greatly reduced.

The invention discloses an image detection and processing method and device and a terminal. The image detection method comprises the steps that any one or any combination of stain/bright spot detection, exposure detection, definition detection, light leakage detection and local shadow detection is performed on multiple images after multiple images are acquired. The above mentioned detection can beperformed on the eye fundus image in turn, partial detection can also be performed according to the actual situation and omnidirectional detection of the image can also be realized so that the photographing quality of the image can be effectively detected.

The invention provides a remote checking and monitoring system for electrical energy measuring instrument, the system is composed of a local unit, a local computer, a remote computer; a local display unit and a remote communication unit are connected with a microprocessor unit; the local computer and the remote computer are connected with the remote communication unit; the secondary voltage of a voltage transformer and the secondary current of a current transformer are connected with a checked ammeter and a standard ammeter in the local unit at a same time. The invention has the advantages that: firstly, an omni-bearing test for the whole electrical energy measuring system can be realized; secondly, a real-time on-line test for the electrical energy measuring system is realized; thirdly, the invention is provided with a remote communication function; fourthly, the invention can be interfaced with electrical energy measuring instruments of different types and from different factories; fifthly, the problems existing in the electrical energy measuring work of electrical customers can be accurately grasped.

The invention provides an underwater robot used for submarine pipeline magnetic memory detection. The robot is mainly used for solving the problem that a conventional ROV cannot detect the bottom of the submarine pipeline particularly the bottom of the pipeline lying on the sea bed. The robot is characterized by comprising an ROV body, a spraying gun sand removal mechanism, a pipe attaching crawling clamping mechanism, a variable diameter sensor detection mechanism and a sediment leveling mechanism; the ROV body serves as a carrier to provide supporting and power for other devices, the spraying gun sand removal mechanism is used for cleaning sediment on a pipeline and the bottom, the pipe attaching crawling clamping mechanism is used for clamping pipelines with different diameters and achieving secondary cleaning, and it is ensured that universal rollers on a clamping jaw are tightly attached to the pipeline for crawling and cannot slip; the variable diameter sensor detection mechanismis used for achieving locking holding detection of a sensor for the pipelines of the different diameters. The robot can achieve full-cycle comprehensive non-dead-corner detection of submarine pipelines under the complex conditions of the deep water area, the sediment coverage and the like.

The invention provides an indoor personnel positioning system and method based on an infrared human body sensor array. The system comprises a plurality of detecting nodes, a base station node, and a host computer. The detecting nodes are arranged at different positions indoors. The base station node is connected with the host computer through a serial port connecting line. The detecting nodes are wirelessly connected with the base station node. Each infrared human body sensor array comprises four infrared human body sensors. Each infrared human body sensor has a 90-degree detecting range such that each infrared human body sensor array may achieve 360-degree omnibearing detection. Each detecting node transmits a detected result to the base station node via a Zigbee network in order to compute personnel positions. Personnel to be positioned are not required to wear any tag or signal source and are completely passively positioned. The indoor personnel positioning system is high in positioning precision. Since each infrared human body sensor has an about 6-meter detecting radius, the information of more than 3 detecting node may achieve about 1-meter positioning precision which may completely satisfy an indoor personnel positioning requirement.

The invention discloses an underwater environment monitoring system for a nuclear power station water intake. The underwater environment monitoring system comprises an upright pole platform arranged in the monitoring area of the nuclear power station water intake, a guide rail arranged in the vertical direction and fixedly connected with an upright pole of the upright pole platform, a monitoring dolly arranged on the guide rail in a slidable manner, and a first driving motor used for driving the monitoring dolly to slide on the guide rail. The monitoring trolley comprises a monitoring dolly main body arranged on the guide rail in a slidable manner, a horizontal rotating platform arranged on the monitoring dolly main body, a monitoring module which is arranged on the horizontal revolving platform and can rotate along with the horizontal rotating platform, and a second driving motor used for driving the horizontal rotating platform to rotate horizontally. The underwater environment monitoring system for the nuclear power station water intake can carry out omnibearing detection to water areas on the water intake in different water depths and different directions, and is simple to operate, and high in operation reliability and practicality.

The invention discloses a microfocus three-dimensional CT imaging detection method for hot-melt welding quality of polyethylene pipelines, and relates to the field of pressure pipelines detection technology in petroleum industry. The method comprises the steps: a, arranging the microfocus three-dimensional CT imaging position; b, adjusting the position of a welding joint; c, adjusting an image; d, acquiring a sectioned image of the welding joint; e, performing image reconstruction; and f, comparing with an acquired image on a computer to observe a welding defect detection result displayed on an image, and performing defect grade evaluation. The detection method has the advantages of high detection precision, good reliability and the like, is especially capable of reproducing a three-dimensional object and visually obtaining the position, the shape, the size and other information of a defect, and helps to solve the problems about space positioning, depth quantification and integral determination on the nature for the defect.

The invention provides an ultrasonic detection device and a detection method for an in-service pipeline or a pressure vessel. The device comprises a track assembly, a detection trolley, a longitudinaldriving assembly and a detection controller, wherein the track assembly comprises a flexible track and an auxiliary positioning part for positioning the flexible track on a to-be-detected wall surface; the detection trolley comprises a trolley main body, a transverse driving assembly and a phased array detection probe assembly, the phased array detection probe assembly is fixed with the trolley main body, and the trolley main body is arranged on the flexible track and is driven by the transverse driving assembly to move along the flexible track; the longitudinal driving assembly is connectedwith the flexible track and drives the flexible track to move along the to-be-detected wall surface; and the detection controller comprises a probe excitation unit connected with a phased array probein the phased array detection probe assembly, and a movement control unit connected with the longitudinal driving assembly and the transverse driving assembly. The device is suitable for detection ofvarious external diameters and various wall surfaces.

The invention provides an electric field detection device which at least comprises a bearing body, a reference electrode layer arranged on the bearing body and at least three induction electrode layers arranged on the bearing body and located above the reference electrode layer. Each induction electrode layer comprises at least four induction electrodes evenly distributed. An independent electric field measurement circuit is formed by each induction electrode and the reference electrode layer. According to the electric field detection device, the induction electrodes distributed on multiple layers are adopted, the induction electrodes and the reference electrodes are all of a strip shape, and the strip-shaped electrodes are small in size, thin, capable of being integrated inside a cap easily and good in concealment performance. Meanwhile, due to the adoption of the induction electrodes distributed on multiple layers, the intensity of an electric field can be detected, the electric field can further be detected at multiple angles in multiple directions, and the direction of the electric field can be judged.

The invention relates to a non-destructive testing technology of polyethylene pipeline hot-melt butt joint and aims to provide an ultrasonic detection device and method for PA-TOFD combined polyethylene pipeline hot-melt butt joint. The ultrasonic detection device comprises a circumferential scanning track which is arranged on a polyethylene pipeline; the circumferential scanning track is providedwith a circumferential scanning device; one end of the connecting rod is fixed on the top of the circumferential scanning device, and the other end of the connecting rod is respectively provided witha phased array probe and a single crystal straight probe through a probe holder; the two probes are positioned on two sides of the hot-melt butt joint of the polyethylene pipeline, and a gap is maintained between the end part of the probe and the polyethylene pipeline. The ultrasonic detector has two detection functions of ultrasonic phase control detection and TOFD detection, and the phased array probe is used as an acoustic wave transmitting probe for ultrasonic phased array detection and TOFD detection. And the two detection results are synchronously displayed in real time. The method overcomes the defects that the traditional pulse-type ultrasonic detection technology is not intuitive, the data cannot be recorded and stored, and the defects of precise positioning and quantification are difficult to be made.

The invention relates to a glass substrate detection device comprising a mounting rack (1) used for being arranged above the glass substrate; a sliding table movably arranged on the mounting rack (1)in a first direction; and a lighting unit (2) for irradiating detection light onto the glass substrate. The lighting unit (2) is movably arranged on the sliding table in a second direction. Accordingto the glass substrate detection device, the lighting unit can be movable in the first direction and the second direction, that is to say, the lighting unit can be moved to any position within a plane, so that the detection light can be irradiated to any position of the glass substrate; omnidirectional detection of the glass substrate is achieved; the observation blind zone is eliminated; the quality of finished products can be improved.

The invention provides a detector for objects inside a box. The detector comprises a camera, an image comparison device, a controller, an alertor, a base plate and an object detecting device. The camera is arranged above a box opening, and the camera, the image caparison device and the alertor are respectively connected with the controller electrically. The base plate is arranged on the bottom of the box in an inclined mode in the diagonal direction of a box body, the object detecting device is arranged at the lowest position of the base plate, and the object detecting device is electrically connected with the controller. Every time a box door is opened, the camera can be triggered to conduct photographing once on a scene inside the box, photos which are taken are transmitted to the image comparison device through the controller, the image comparison device conducts comparison analysis on two adjacent photos before and after, and if the comparison result is that the two photos before and after are different, the alertor is triggered through the controller to warn and indicate that an object is placed into the box. According to the technical scheme, the detector for the objects inside the box is improved, and the non-dead-angle detector for objects inside the box is provided.

The invention discloses automatic detecting equipment for appearance defects of a mobile phone lens. The automatic detecting equipment comprises equipment platform, a loading module, a height measuring module, at least one detecting module, a dotting module, a discharging module, a conveying module and an upper computer, wherein the equipment platform comprises a big equipment plate, a vibration isolation fixed column and a detecting platform; the big equipment plate is rectangular on the whole and is used as an installation substrate; a circulation system for the lens product to be detected is formed by the loading module, the discharging module and the conveying module; the whole circulation system is fixed to the big equipment plate; a detecting system for the lens product to be detected is formed by the height measuring module, the at least one detecting module and the dotting module; and the whole detecting system is fixed to the detecting platform, so that the circulation systemand the detecting system are mechanically or electrically isolated from each other. The automatic detecting equipment can be used for detecting the defects of the mobile phone lens accurately and quickly.

The invention provides a piston surface defect detection method and system based on deep learning, and belongs to the technical field of piston detection. According to the detection method, machine vision and a deep learning neural network are combined for piston surface defect detection, a gray image processing algorithm is adopted for defect detection on a smooth surface, and an improved FASTER-RCNN deep learning neural network is adopted for defect detection on a cast surface; meanwhile, a plurality of cameras and end light sources with different angles and wavebands are adopted to performimage acquisition at different image acquisition stations, so that the optimal image acquisition effect is achieved; and segmentation processing is carried out on the high-resolution picture, so thatthe accuracy of picture detail identification is improved. According to the invention, efficient and accurate automatic detection of various defects is realized.

The invention discloses a scraper detection device for omnidirectional detection, which comprises a rack, a console and a detection module, wherein the rack is provided with a horizontal working table; the detection module comprises a first X-axis translation sliding seat, a second X-axis translation sliding seat, a vertical adjustable scraper blade surface defect detection device, a scraper mounting unit, a second X-axis translation driving mechanism, a first X-axis translation driving mechanism, a scraper blade flatness detection device, and a scraper blade edge angle and deformation detection device; the horizontal working table is provided with a first X-axis sliding rail and a second X-axis sliding rail; the first X-axis translation sliding seat is arranged along the first X-axis sliding rail; and the second X-axis translation sliding seat is arranged along the second X-axis sliding rail. Thus, omnidirectional detection on the scraper can be mainly realized, all aspects of the performance and the parameter performance of the scraper can be known, whether to replace a scraper can be timely known, the scraper is maintained timely, the automatic degree is high, and the detectionefficiency is improved.

The invention discloses commutator size and appearance defect detection equipment based on CCD vision. The commutator size and appearance defect detection equipment comprises an electrical cabinet, a workbench and a hood, wherein a vibration feeding device is arranged on one side of the workbench, a rotary shifting mechanism connected with a discharging port of the vibration feeding device is arranged on one side of the top surface of the workbench, a glass rotating mechanism connected with a discharging port of the rotary shifting mechanism is arranged in the center of the top surface of the workbench, and a guide mechanism is arranged at the axis of the glass rotating mechanism; a first camera assembly, an optical fiber detection assembly, a second camera assembly, a third camera assembly, a fourth camera assembly, a fifth camera assembly, a sixth camera assembly and a discharging assembly which are located on the outer side of the glass rotating mechanism are sequentially arranged on the top surface of the workbench; and a display is arranged at the top of the outer side wall of the hood. According to the commutator size and appearance defect detection equipment, continuous automatic feeding, placement, positioning, all-dimensional detection and classified discharging of a commutator product to be detected can be realized, appearance detection is comprehensively covered, the detection result is accurate and reliable, and the detection efficiency is high.

The invention relates to a flying target detection interference system and method. The system comprises a radio transceiver unit, a signal processing unit, an interference signal generation unit and acontrol unit. The radio transceiver unit is used for receiving a target radio signal transmitted by a flying target or transmitting a radio interference signal to the flying target in a specific airspace. The signal processing unit is used to receive and process the target radio signal from one of radio antenna assemblies, and determine a serial number of the radio antenna assembly closest to theflying target. The interference signal generation unit generates a radio interference signal and transmits the radio interference signal to one of the radio antenna assemblies for performing transmission. The control unit controls the radio antenna assembly corresponding to the serial number to receive the radio interference signal generated by the interference signal generation unit and transmitthe radio interference signal to the flying target.

The invention discloses an examination device for the otorhinolaryngological department, which is used in the position for detecting the focus in the auditory meatus. The device comprises a main body, an intubation tube arranged at the front end of the main body, an LED lamp arranged on the wall of the front end of the intubation tube, a ball fixed in the hole in the front end of the intubation tube, a bulb which is arranged in the ball and can rotate in the ball, a camera fixed on the bulb, a display screen which is arranged at the rear end of the main body and is used for displaying video images shot by the camera and a hydraulic drive mechanism which is used for driving the bulb to rotate, wherein the hydraulic drive mechanism is used for selectively introducing hydraulic medium to four cavities, so that the angle of the camera is adjusted under two degrees of rotational freedom, and the auditory meatus can be overall detected.