17results about How to "Reduce detection blind spots" patented technology

The invention relates to the technical field of industrial defect detection, in particular to a wire harness defect detection method and system based on visual identification. The method comprises the following steps: acquiring wire harness image data, and performing image segmentation according to the wire harness image data to obtain wire harness image segmentation data; performing morphological feature extraction according to the wiring harness image segmentation data to obtain wiring harness morphological feature data, and performing three-dimensional reconstruction according to the wiring harness morphological feature data to obtain wiring harness three-dimensional reconstruction data; performing microstructure defect detection according to the wiring harness morphological characteristic data to obtain first wiring harness defect detection and first wiring harness defect detection data, and performing microstructure defect detection on the wiring harness three-dimensional reconstruction data to obtain second wiring harness defect detection data; and marking the wire harness image data according to the first wire harness defect detection data and the second wire harness defect detection data to obtain wire harness image defect marking data. According to the method, the potential defect can be identified in the fine form change of the wire harness.

The invention relates to a continuous endoscopic robot capable of crossing a complex channel, which comprises a driving device for driving the whole robot to work; the control end of the robot body is connected with the driving device through a keel and a tendon guiding mechanism, the tail end of the robot body can penetrate through a complex channel, and the robot body is arranged on the front portion of the whole robot and has the function of stretching and bending deformation at the same time. The multiple tendon tension measuring mechanisms are arranged at the end of the driving device in the circumferential direction of the keel and the tendon guiding mechanism at intervals and used for measuring the tendon tension of the robot body and transmitting the tendon tension into the controller; the tendon stretching mechanism is arranged on the outer side of the tendon tension measuring mechanism, and the controller is arranged outside the robot body and used for controlling the driving device to work and controlling the tendon stretching mechanism to work according to received tendon tension information transmitted by the tendon tension measuring mechanism. According to the invention, the detection reachable performance of the robot in a complex space is improved, the detection blind area is reduced, and the detection efficiency is improved.

The invention relates to a coal cutter detection early warning method and system based on 4D millimeter wave radars. The method comprises the following steps: installing a plurality of 4D millimeter wave radars on a traction part in a parabola shape; acquiring coal mine environment calibration point cloud information through the echo signal; aligning and calibrating the point cloud data; fusing a plurality of point cloud data; the height of the cutting roller, the height of the face guard and the recovery angle data of the face guard are obtained; and judging whether a safe operation condition is met or not, controlling the coal mining machine to stop action, controlling the alarm module to carry out alarm action and sending out alarm information under a non-safe condition. The system comprises a 4D millimeter wave radar, an alarm module, a wireless communication module and a data processing terminal. The data processing terminal is connected with the 4D millimeter wave radar, the alarm module and the wireless communication module. According to the method and the system, high-precision detection of a complex mine environment can be realized, an accident of collision of the cutting roller and the side protection plate can be avoided, and the safety of mining operation and the stability of long-term operation of equipment can be effectively guaranteed.

The utility model relates to communication field discloses a kind of unmanned aerial vehicle signal receiving device and communication base station, unmanned aerial vehicle signal receiving device includes: body, body includes processor;With the first omnidirectional antenna, second omnidirectional antenna and third omnidirectional antenna of body connection, wherein the angle between the first omnidirectional antenna, second omnidirectional antenna and third omnidirectional antenna is in the range of 60 degrees to 120 degrees.The utility model can ensure that the antenna lobe diagram after superposition is close to spherical by the combination of at least three omnidirectional antennas arranged in different directions, so as to reduce the detection blind area, expand the detection range, to realize the effective tracking and supervision of unmanned aerial vehicle.

The invention discloses an island detection method of an energy storage hydrogen production system, a medium and a system, and the detection method comprises the steps: 1) obtaining the voltage of the energy storage hydrogen production system, carrying out the phase locking to generate an angle theta grid, obtaining the voltage of an output port of a converter, carrying out the phase locking to generate an angle theta pcs, and comparing the angle theta grid with the angle theta pcs to obtain a difference value delta theta; 2) comparing the difference value delta theta with a preset threshold value; and when the difference value delta theta is greater than a preset threshold value, judging that the energy storage hydrogen production system is in an island state, and actively performing island protection. According to the invention, active / passive anti-islanding protection is defined according to the difference value between the phase-locking angle of the grid-connected point and the phase-locking angle of the converter port, and the frequency deviation is detected through active disturbance and sliding window filtering so as to detect the islanding, so that the detection blind area of passive anti-islanding is reduced, and the response speed is improved.

The invention relates to the technical field of coal mine safety detection equipment, and provides a mining intrinsic safety type aerial fog spraying controller which comprises a rod tail seat, the top of the rod tail seat is connected with a telescopic rod piece, the top of the telescopic rod piece is connected with a handle pipe, the outer side of the handle pipe is connected with a handle cover, and the top of the handle pipe is connected with a first mounting plate. The two ends of the top of the first mounting plate are connected with connecting rods, the tops of the two connecting rods are connected with a shell, the outer side of the shell is connected with a control panel, a gas cylinder is connected between the two connecting rods, the top of the shell is connected with a second mounting plate, one end of the top of the second mounting plate is connected with an electromagnetic valve, and the outlet end of the electromagnetic valve is connected with a movable connector. The outlet end of the movable connector is connected with a smoke outlet nozzle, and the other end of the top of the second mounting plate is connected with a heating head. The technical defects of a traditional aerial fog spraying controller are comprehensively overcome through the height-adjustable telescopic rod piece, the direction-flexible spraying head, the uniform heat source design, the real-time monitoring system and safe and portable operation.

The present invention relates to a phased array probe and a detection method for ultrasonic detection of pot-type insulators, and relates to the technical field of power transmission and transformation insulation equipment. The dual-size array element ultrasonic phased array probe comprises a large array element, a small array element, a shell, a sleeve, a backing, a metal coating, a matching layer, a screw, and a boss, wherein the large array element and the small array element are arranged alternately, the large array element uses a material with high transmission sensitivity, and the small array element uses a material with high reception sensitivity. The detection depth of the ultrasonic phased array probe is improved by transmitting sound waves by the large array element and receiving sound waves by the small array element; the matching ultrasonic detection method divides the GIS pot-type insulator into a column area and a truncated cone area, including matching column area wedges, truncated cone area wedges, and ultrasonic phased array probe focusing and detection methods. The detection and imaging of internal defects of large-size insulators are achieved by using a dual-size array element ultrasonic phased array probe and a matching ultrasonic detection method.

The invention discloses a three-dimensional ground penetrating radar dispersive medium discontinuous finite element forward modeling method and system and a storage medium, and the method comprises the following steps: S1, building a forward modeling model, and setting parameters at a boundary; s2, inputting parameters, and setting the positions of an excitation point and a receiving point; s3, performing mesh generation on the three-dimensional dispersive medium model; s4, solving numerical flux of six components of the three-dimensional electromagnetic field; s5, updating an auxiliary field variable of the three-dimensional area; s6, updating electromagnetic field components of the whole region; s7, time steps are added, and the steps are repeated until three-dimensional forward modeling simulation of the current time step is completed; s8, repeating the steps until all excitation is completed; and S9, outputting the data. According to the method, the three-dimensional full-region electromagnetic field evolution calculation logic is optimized, and the multi-scale modeling requirement of a large-scale complex underground structure is met. The finally output three-dimensional radar profile can present the depth, form and spatial distribution of the underground target in a three-dimensional manner, and detection blind areas are reduced.

The utility model relates to oil level sensor technical field discloses a kind of reverse resistance type electronic oil level sensor, including electronic sensor body, the electronic sensor body includes stainless steel non-magnetic tube, stainless steel thread, float ball and AMP-2P insert;The float ball is 22×20 column type magnet NBR float ball, can float with oil level change;The electronic sensor body sensor outlet length is 460mm, connection with external circuit is realized by the AMP-2P insert, and installation is carried out using the stainless steel thread.The utility model in the present application, the sensor solves the problem of large detection blind area and insufficient precision of the bottom of the old positive resistance output sensor, adopts 190 ohm-0 ohm reverse resistance type output mode, greatly reduces the detection blind area, so as to adapt to the scene of high oil level precision requirement, such as aviation fuel monitoring, precision mechanical equipment lubricating oil level detection, small diesel generator set diesel oil level detection, effectively avoid the equipment failure or security risk caused by oil level misjudgment, ensure the stable operation of equipment.

This utility model relates to an automated spectral detection device for coated film layers, comprising a frame and a conveyor belt rotatably mounted on the frame via two rollers. A U-shaped frame is mounted on the frame, and a spectrometer is mounted on the U-shaped frame via a swing assembly. A drive assembly is mounted on the frame, and the drive assembly is connected to the swing assembly and rollers via a transmission structure and a linkage assembly. When the drive assembly is running, the swing assembly and rollers will run alternately to achieve mutual coordination between the conveyor belt and the spectrometer. Through its unique structural design, this utility model realizes the automated reciprocating swing of the spectrometer, which allows the spectrometer to automatically change its detection angle, effectively reducing the detection blind zone at the edge of the coating and improving the comprehensiveness and accuracy of the detection. At the same time, the linkage between the drive assembly, rollers, and swing assembly realizes the coordinated work of the conveyor belt and the spectrometer, improving the detection efficiency.

The utility model discloses a kind of intelligent dimming control device based on human body response, by adopting double pyroelectric infrared sensor, each is equipped with independent fresnel lens, both can be arranged in different positions or angle cooperative work, can cover more wide space area, effectively reduce detection blind area, independent fresnel lens can be designed according to sensor position and detection demand pertinence, adjust focal length, viewing angle and the like parameter, make sensor accurate receiving human infrared radiation, optimize for different direction and distance human activity, improve detection sensitivity and accuracy, whether there is human existence according to whether the signal strength output by human body response module exceeds the set threshold value by microcontroller module, this kind of judgment based on signal strength is more accurate, LED load module receives the electric energy and PWM signal of dimming drive module, according to the duty ratio change luminous brightness of PWM signal, can realize the smooth and accurate regulation of LED light brightness, provide more intelligent, comfortable lighting experience for user.

The utility model belongs to the field of light radiation test technology especially relates to radiation test system, including work table, rotary table, clamping mechanism, support column, lifting mechanism, test antenna, be equipped with rotatable rotary table on work table, the centre of rotary table is equipped with positioning hole, rotary table still is equipped with clamping mechanism, is used for clamping the lamp to be measured, makes the lamp to be measured axis perpendicular to positioning hole axis, work table one side is equipped with support column, be equipped with lifting mechanism on support column, the lifting end of lifting mechanism is connected with an installation frame, and test antenna is installed on the installation frame, makes test antenna towards clamping mechanism. Adjust the ground clearance of test antenna through lifting mechanism, can ensure that the light emitting surface center of lamp to be measured and test antenna keep the same horizontal plane, improve the precision of radiation detection. Then rotate rotary table again, adjust the light emitting angle of lamp and the height of lifting test antenna, capture the maximum radiation value of lamp space distribution, ensure the accuracy of test, reduce the detection blind area.

The present invention discloses an energy transmission safety online monitoring cloud platform based on multi-dimensional feature analysis. By setting up a pipeline segment self-hazard monitoring module, a pipeline segment external environment hazard monitoring module, and setting up a high-definition camera, a gas leak detector, a flow meter and a pressure sensor, the self-hazard monitoring of the natural gas transmission pipeline is realized. At the same time, a rain gauge, a temperature sensor, an anemometer and a wind vane are set to realize the corresponding hazard monitoring of the external environment of the natural gas transmission pipeline. On the one hand, it can not only detect subtle hazard problems such as pipeline cracks and deformations, but also reduce detection blind spots, improve detection effects, and provide a stability basis for the hazard monitoring results of the natural gas pipeline. On the other hand, the amount of data collected is large, and the aging phenomenon of most natural gas pipelines is taken into account, so that dynamic monitoring of the natural gas pipeline is realized, and the reliability and stability of the safety monitoring of the natural gas pipeline are improved.

The buried oil tank comprises an outer tank body, the outer side of the outer tank body is fixedly connected with a lifting lug, an inner tank body is arranged in the outer tank body in a sleeved mode, the outer side of the outer tank body is fixedly connected with a manhole opening, the outer side of the outer tank body is fixedly connected with a guardrail, the outer side of the outer tank body is fixedly connected with a climbing frame, and a containing groove is formed in the side face of the climbing frame. The climbing frame is fixedly connected with the first buckle, the bottom of the climbing frame is fixedly connected with the supporting legs, an arc-shaped support is arranged on the climbing frame and fixedly connected with the crawling ladder, the outer side of the arc-shaped support is fixedly connected with the clamping plate, and a sealing cover plate is arranged on the outer side of the manhole opening. A constructor can conveniently climb to the top of the outer tank body through the crawling ladder and the climbing frame, the constructor can conveniently enter the inner tank body through the convenient disassembly and assembly of the crawling ladder and the climbing frame, the maintenance difficulty of the constructor is reduced, the working efficiency is improved, and the rotating plate is rotated through the motor, so that the optical fiber sensor is rotated; the detection range of the fiber sensor is effectively expanded and detection dead angles are reduced.

A kind of optical cable surface detection device, including pedestal and being provided with primary detection mechanism and secondary detection mechanism in top, primary detection mechanism includes primary detection base and primary detection mould, mould placing groove is recessed on primary detection base, and first optical cable transmission through-hole is opened in the center of groove bottom, primary detection mould is placed in mould placing groove and is provided with optical cable detection through-hole in the center, secondary detection mechanism includes secondary detection base and multiple detection components, secondary detection base is provided with second optical cable transmission through-hole, multiple detection components are evenly distributed and are arranged on secondary detection base, one end is fixedly connected with secondary detection base, the other end is inserted into secondary detection base and is connected with detection abutting piece by elastic expansion component.The primary detection mechanism in the application carries out rough detection to optical cable surface, is used to filter the larger bulge on optical cable surface, multiple dynamic detection wheels in secondary detection mechanism are arranged in phase and are closely combined with optical cable surface to carry out fine detection, and detection coverage is wide.

The utility model relates to an auxiliary tool for scanning and detecting refinery pipe fittings, which comprises a placement box, the placement box is a cube with an upper opening, the top of the placement box is open and is provided with a separable cover plate, and a cable gland, namely a cable fixing head, is arranged on the right side of the placement box and is mainly used for fastening and sealing a cable; a replaceable bottom support is detachably arranged at the bottom of the placement box, the detachable mode is a plug-pull type plug-and-unplug mode, an insertion block is arranged at the bottom of the placement box, an insertion groove is formed in the upper portion of the replaceable bottom support, and the insertion block is matched with the insertion groove; an arc-shaped groove with a downward opening is formed in the lower part of the replaceable bottom support; and the replaceable bottom support is provided with various specifications. According to the utility model, pipe fittings with different pipe diameters can be adapted through the replaceable collet; the device is simple in structure, free of hands of detection personnel, suitable for various narrow detection environments, capable of reducing detection blind areas, avoiding leakage detection risks and capable of improving detection efficiency.

The present invention relates to the technical field of copper bar surface quality detection, and specifically, to a copper bar surface quality detection device. It comprises a base, and a receiving device is symmetrically arranged on the upper side of the base, and a driving detection device is arranged between the two receiving devices. The present invention receives the copper bar through a receiving plate, and the gravity of the copper bar presses the receiving rod downward, so that the receiving rod drives the pressure rod to press the driving device, so that the driving device drives the moving device to approach the copper bar, and then the detection needle of the electronic dial indicator contacts the surface of the copper bar, so that the electronic dial indicator detects the surface flatness of the copper bar, eliminating the trouble of adjusting the position of the electronic dial indicator when manually detecting the copper bar, and at the same time, by adjusting the height of the electronic dial indicator to descend, the rotation angle of the pressure rod is controlled, and the quality of the copper bar is judged by the rotation of the receiving device, thereby eliminating the step of measuring the quality of the copper bar, and thus speeding up the detection of the copper bar.