88results about How to "Solving Detection Challenges" patented technology

The invention discloses a measurement method of a coating rate for a paper-making reconstituted tobacco. The method comprises the following steps of: (1) drying a sample box and a paper-making reconstituted tobacco finished product, cooling the dried sample box and the dried paper-making reconstituted tobacco finished product in a dryer, weighing the sample box and recording the value as m0, and weighing the paper-making reconstituted tobacco and recording the value as m1; (2) placing the paper-making reconstituted tobacco in the sample box, soaking the sample box with the paper-making reconstituted tobacco in water twice, filtering the resulting product, drying the filtered product, cooling the dried product in the dryer, weighing the cooled product and recording the value as m2; and (3) calculating the coating rate x for the paper-making reconstituted tobacco: x=[m1-(m2-m0)]/m1*100%; or simultaneously carrying out step (1) and step (2) on a plurality of samples of the paper-making reconstituted tobaccos at different weights, and fitting a straight line by taking m1 as X-coordinate, m1-(m2-m0) as Y-coordinate to obtain a gradient, namely, the coating rate X. The measurement method of the coating rate for the paper-making reconstituted tobacco is simple, convenient, and capable of accurately and objectively measuring the coating rate of the paper-making reconstituted tobacco.

The invention discloses an unmanned aerial vehicle mechanical arm-based crane metal structure detection device and method and belongs to the field of crane metal structure damage recognition. The device comprises an unmanned aerial vehicle main body, a ground treatment device, a mechanical arm, a non-destructive detection device and a camera. The unmanned aerial vehicle main body is used for carrying the mechanical arm and the non-destructive detection device. A non-destructive detection probe carried by the mechanical arm above the unmanned aerial vehicle main body contacts with the metal structure surface and acquires a defect characteristic signal, the defect characteristic signal is transmitted to the non-destructive detection device main body through a cable and then is transmitted to the ground treatment device through a wireless communication link, the ground treatment device carries out time-domain and frequency-domain analysis and constructs defect signal identification feature vectors, and an Euclidean distance of the feature vector between the signal to be detected and a known defect signal is calculated to determine a degree of approximation so that a signal defect type is identified. The device and method realize automatic detection and identification of defect features such as cracks, corrosion and holes on the metal structure surface and subsurface.

The invention discloses a damaged building detection method. The detection method includes the steps that based on a laser point cloud of a building, the contour lines of the building are generated; the contour lines are clustered, so that contour line clusters are obtained; normalization information entropy of the contour line shape similarity of the contour line clusters is calculated; according to the normalization information entropy of the contour line shape similarity of the contour line clusters, a classification threshold value is calculated, and a damage index of the contour line clusters is calculated according to the classification threshold value; according to the damage index, whether the building is damaged or not is judged. Through the detection method, the damaged building with a complex structure can be accurately detected.

The invention provides a comprehensive experimental platform for a power quality and energy-saving equipment based on the thinking of an artificial intelligence robot. The comprehensive experimental platform adopts a high-power electronic interface device to replace the conventional power amplifier so as to improve the electrical parameters of the interface and at the same time, realize greater power handling capacity to solve the problem of performance restrictions of power amplifiers in digital-physical hybrid simulation. The platform is regarded as an intelligent robot, and the structure and the function of the platform are divided based on a perception unit, a planning unit and an implementation unit of the robot. The platform robot can plan the operation of the next step according to the perceived system information and then realize the planning through the implementation unit. The comprehensive experimental platform makes use of the repeatability in the experimental process and the self-learning ability of the platform robot, and adopts a successive approximation method of repeated experiments to enable the experimental process to eventually reach the required operating conditions. Finally, based on the parameters tallied with the experimental requirements, the comprehensive experimental platform analyzes the performances of the power quality equipment and completes the experimental process.

The invention discloses a flexible method for detecting the quality of the curved surface of a head of a high-speed train, and the method comprises the following steps: S1, pasting a mark point and acoding point on the surface of a detected part; S2, fixing a high-precision measurement scale in a scanned region; S3, carrying out the omnibearing and multi-angle shooting of the detected part of thehead of the high-speed train through a close-shot three-dimensional photogrammetry system, and constructing a global coordinate system; S4, scanning the surface of the head of the high-speed train through three-dimensional scanning equipment, and obtaining the point cloud data of the surface of the head. According to the invention, the method combines the close-shot three-dimensional photogrammetry system and a hand-held three-dimensional scanner, achieves the precise measurement of the head, exceeding a measurement range, of the high-speed train, effectively controls the registration precision of multi-view point cloud in a three-dimensional scanning process, guarantees the measurement precision of a large-scale part, and solves a problem that the manufacturing quality of the curved surface of the head of the high-speed train is difficult to detect.

The invention provides a remaining object detection method and device, and the method comprises the steps: firstly, judging the motion characteristics of pixels through employing a frame difference method according to the real-time rapidity requirement of remaining object detection, and finding a target object which is changed from dynamic to static, i.e., a suspected remaining object; Then, usingHOG features and SVM to performing classification, distinguishing people and articles, and filtering out the people; Judging whether the staying duration of the target object exceeds a preset duration or not by adopting an evidence accumulation mode; And finally, performing feature matching on the person near the target object and the owner of the target object, and if the person is not matched with the owner of the target object, determining the target object as a left object. On one hand, the calculation complexity is low, real-time performance and high efficiency are achieved; the method solves the problems of false alarm and shielding in the detection process of the left object, also solves the problem of distinguishing whether the left object is a person or an object, and also solvesthe problem of distinguishing whether the left object really has no owner, so that the detection accuracy is very high, and the detection problem of the left object is effectively solved.

The invention discloses an underwater narrow space detection orientated flexible robot system. The system is characterized by comprising a rigidity multi-joint robot, a flexible robot, an underwater camera and a control system; the rigidity multi-joint robot, the flexible robot and the underwater camera are connected in series sequentially, the flexible robot is formed by series-connection of multiple flexible motion units, each flexible motion unit adopts a hollow flexible framework and a pneumatic manual muscle flexible driver, and multi-freedom-degree space flexible motion is achieved. Theunderwater camera penetrates the narrow space and then is delivered to an underwater position to be detected, the pneumatic manual muscle flexible drive manner is adopted to avoid the problem about the driver underwater seal, the robot is reliable in work and compact in structure, the robot control system can adopt interaction control, program interface control and automatic control manners, the control system can perceive the robot tail end pose and robot and underwater structure contact force, in combination with the structure and drive flexibility of a flexible robot, smooth advancing and retreating of the flexible robot from the narrow space is ensured, the damage to the flexible robot is avoided, operation of an underwater facility is not obstructed, use is safe and reliable, and thedetection problem of the underwater narrow space is solved.

The invention relates to the technical field of detection of the eccentric throw of a crankshaft, and especially relates to an apparatus and method of measuring the eccentric throw of a crankshaft. The apparatus comprises a 90-degree V-shaped positioning block, a measuring cantilever and an indicating gauge. During detection, a gauge reference block of a to-be-measured crankshaft is also needed, the apparatus is calibrated and set to be zero on the gauge reference block, and then the apparatus measures the eccentric throw of an A type crankshaft. When the apparatus measures other types of crankshafts such as a B type crankshaft, distances b between the highest points of connecting rod necks of the A type crankshaft and the B type crankshaft and the intersection point of the 90-degree V-shaped positioning block are calculated by means of a mathematical formula shown in the description. According to a difference [delta]b of the distances b of the A type crankshaft and the B type crankshaft, the eccentric throw of the B type crankshaft is obtained through the apparatus and a conversion method. In this way, the step of making a gauge reference block specially for the B type crankshaft is not needed. The difficulty in detection of the eccentric throw of a crankshaft is solved, the problems in borrowing of apparatuses for different procedures of crankshafts with the same type and borrowing of apparatus for different type of crankshafts are solved, and the manufacture cost of the apparatus is greatly reduced.

The invention discloses a cable buffer layer conductivity defect detection method which comprises steps of electrically modeling a cable, disposing a resistor and capacitor between the wire core and the metal sheath of the cable to be detected, connecting one end of the wire core to test voltage, suspending the other end of the wire core or disconnecting the other end of the wire core from a load,suspending one end of the metal sheath or grounding the one end of the metal sheath through a voltage protector, and directly grounding the other end of the metal sheath; applying an AC test voltageto the wire core of the cable, and recoding the test voltage and the no-load test current waveform of the directly grounded end of the metal sheath; according to the basic parameters of the cable andthe test voltage, calculating the no-load theoretical current waveform of the directly grounded end of the metal sheath; comparing the phase and the amplitude of the no-load theoretical current waveform with those of the no-load test current waveform, and determining that the cable buffer layer has a conductivity defect if a set threshold is exceeded. The cable buffer layer conductivity defect detection method detects the entire cable, is simple and high in efficiency, and solves the inability to detect the cable in operation.

The invention discloses a compressor blade runner surface profile tolerance detecting device and a compressor blade runner surface profile tolerance detecting method. The compressor blade runner surface profile tolerance detecting device comprises a support, wherein a positioning and clamping device, a standard surface block and a differential meter frame are arranged on the support, the positioning and clamping device is used for fixing compressor blades, the standard surface block is used for being compared with the compressor blades, the differential meter frame is used for detecting runner surface profile tolerance of the compressor blades, the differential meter frame comprises a differential meter frame body, an upper measuring rod and a lower measuring rod which can move up and down are arranged on the differential meter frame body, the end part of the upper measuring rod is provided with a measuring head used for measuring runner surfaces of the compressor blades, the end part of the lower measuring rod is provided with a measuring head used for measuring surfaces of the standard surface block, a dial indicator used for displaying compressor blade runner surface profile tolerance deviation is arranged on the differential meter frame body, and a meter-correcting block used for carrying out zero setting on the dial indicator is arranged on the support. The compressor blade runner surface profile tolerance detecting device and the compressor blade runner surface profile tolerance detecting method achieve accurate measurement of the blade runner surface profile tolerance, have small error and high efficiency, and solve the detection difficulty of blade processing site.

The invention provides a web vulnerability static detection method based on taint analysis. The method comprises the following steps: converting a target source code into an intermediate language; scanning the converted intermediate language, and performing taint analysis in the scanning process; and outputting a taint propagation path formed by all the marked taint variables on the propagation chain from the taint source to the taint convergent point in sequence, and taking the taint propagation path as a web vulnerability detection result; and when the file inclusion relationship exists in the target source code file, starting a new sub-analysis process to perform recursive taint analysis on the included file. Firstly, the static detection accuracy of Web vulnerabilities is improved; according to the invention, the object-oriented codes are well detected by utilizing the semantic accuracy of the intermediate language, so that the detection accuracy is improved, the detection problem of user-defined functions is solved by realizing taint analysis between processes, the detection capability of static detection is improved, and the false alarm rate is reduced.

The invention discloses a maglev curve F-type rail curvature two-dimensional measuring device. The maglev curve F-type rail curvature two-dimensional measuring device comprises a detection platform and a detection device, wherein the detection device and a curve F-type rail are arranged at the top part of the detection platform in a spaced manner, the detection device comprises a driving device, a laser ranging sensor and a linear guide rail, and the linear guide rail is arranged along the extension direction of the curve F-type rail. The invention further discloses a maglev curve F-type rail curvature two-dimensional detection method. The maglev curve F-type rail curvature two-dimensional measuring device and the maglev curve F-type rail curvature two-dimensional detection method are used for measuring curvature of the curve F-type rail, can be used for detecting the F-type rail workblank after bending and machining, can be further used for detecting other curves and curved surfaces, can detect the curvature of the curve F-type rail accurately, conveniently and rapidly, and solve the curvature detection difficulty of the F-type rail in machining process.

The invention provides a portable universal detector for an automatic fire extinguishing and explosion suppression device. The portable universal detector comprises a display control unit, a detectionunit, test cables, a power cable and a communication cable. The display control unit is connected with the detection unit through the communication cable, and the detection unit is connected with anautomatic fire extinguishing and explosion suppression device control box and an automatic fire extinguishing and explosion suppression device leading-out wire on a tested vehicle through the test cables; and two ends of the power cable are correspondingly connected with the detection unit and a direct-current power supply in the detected vehicle. According to the portable universal detector, excitation signals of the control box can be formed, measurement of all paths of signals of the automatic fire extinguishing and explosion suppression device system and analysis of the detection content are achieved, the in-situ detection requirement of the whole system of the automatic fire extinguishing and explosion suppression device can be met, the test result can be directly displayed, a test guide prompt can be provided, meanwhile, the detection result is intelligently judged, the practicability is good, the portable universal detector can adapt to different automatic fire extinguishing andexplosion suppression devices, and the universality is high.

The invention discloses a device and a method for counting micro-particles based on a micro-nanofiber. The device comprises a narrow linewidth laser, a fiber isolator, a fiber coupler, the micro-nanofiber, a signal light detector and a reference light detector, the coupled mode of the fiber coupler is 2X2, an output end of the laser is connected to the fiber isolator through a fiber and then connected to a first port of the fiber coupler, the signal light detector is connected with the micro-nanofiber and then connected to a third port of the fiber coupler, and the reference light detector is connected to a fourth port of the fiber coupler through a fiber. The device has the advantages that micron-diameter particles are sensed by the aid of large evanescent field of the micro-nanofiber, owing to high light confinement capacity and guide capacity of the micro-nanofiber, the shortcomings of scattered beam energy and difficulty in gathering and detecting scattered light of a traditional optical method are overcome, and difficulty in realizing high stability and resonance frequency of resonant quality sensing is avoided in principle.

The invention discloses a method for detecting salmonellas in dehydrated garlic products by adopting the immunomagnetic separation technology. The method comprises the following steps: (1) adding garlic powder into sterilization diluent, obtaining filter residues through filtering by a film filter bag after homogenization; (2) oscillating and washing the residues by the sterilization diluent for three times, mixing washing liquid of the three times; (3) oscillating salmonella immunomagnetic bead buffer solution and the mixed washing liquid; (4) performing centrifugal separation to obtain centrifugation sediment; (5) adding buffer peptone water enrichment broth into the centrifugation sediment and culturing for 24 hours; and (6) taking the culture solution, adding selenite cystine enrichment broth for enrichment culture, and using the VIDAS system to detect the salmonellas in the dehydrated garlic products. According to the invention, the immunomagnetic separation technology is utilized to realize fast detection of the salmonellas in the dehydrated garlic products, and the technology has the advantages of high specificity and high sensitivity.

The invention discloses a device for monitoring the abrasion amount of a mill lining plate in real time. The device includes a monitoring assembly, an information interaction assembly and a control mechanism; the monitoring assembly is provided with a detection bolt, one end of the detection bolt penetrates through a mill cylinder body and the mill lining plate in sequence and is flush with the inner edge of the mill lining plate, and the other end of the detection bolt extends outside the mill cylinder body; and the inner part of the detection bolt is of a hollow structure, and a sensor probeis fixed to the hollow structure part through an insulating castable in a sealing mode. According to the device for monitoring the abrasion amount of the mill lining plate in real time, the abrasionamount of the mill lining plate can be effectively and accurately monitored in real time without stopping a mill, so that the effective utilization of the mill lining plate is improved, and the mill production efficiency is improved.

The invention belongs to non-destructive testing technology and relates to a probe device and scanning method used for aerial flange eddy automatic detection. The probe device can conduct effective detection on an outline surface containing an R arc in a large curvature right angle and similar line segments to improve detection accessibility of such parts through a zigzag probe frame combined with a scanning mode in which a specially designed probe steps on both sides along an outline of a cross section of the flange. In addition, the probe device and the scanning method also has good universality and is also applicable to detection of other parts such as a classical straight line outline surface, an ordinary R arc outline surface on the flange and the like. The probe device used for aerial flange eddy automatic detection adopts the zigzag probe frame combined with an improved scanning mode, which, compared with the prior probe device and scanning method, except solving a detection problem of the outline surface of the R arc in the large curvature right angle, also has good universality for other common structures, shapes and parts on the flange.

The invention relates to a device for measuring a rotor bracket of a hydrogenerator oblique stud support arm structure. The invention belongs to the technical field of hydrogenerators. The device for measuring the rotor bracket of the hydrogenerator oblique stud support arm structure has the characteristics that: the device for measuring the rotor bracket comprises a basic annular plate, a wide yoke rim sheet, and a laminated inspection pin; the height-adjustable basic annular plate is arranged on the external circle bottom of a stud of the rotor bracket; the basic annular plate is provided with the laminated inspection pin to laminate the wide yoke rim sheet into a full circle yoke ring; and an equally-dividing positioning frame is embedded in an internal circle yoke key groove of the laminated full circle yoke ring. The invention has the advantages of simple structure, convenient operation, safe use, reliable performance, precise detection and the like; the requirement of rotor assembling is guaranteed, the progress for detecting the rotor bracket of the hydrogenerator oblique stud support arm structure is greatly improved, the measurement fixture cost is saved, the smoothness of the rotor assembling is guaranteed, and the designing and manufacturing level and the production efficiency are improved.

The invention belongs to the technical field of rolling bearing detection, and provides a detection method and device for the roller deflection in a cylindrical roller bearing inner ring assembly. The proposed bearing inner ring assembly cylindrical roller deflection detection device is provided with a mandrel used for supporting the inner ring assembly. The inner ring assembly sleeves the mandrel and is in clearance fit with the mandrel. A rubber ring is arranged between the inner ring assembly and the mandrel. A stepped through hole is arranged in the center of the mandrel, wherein the upper part of the stepped through hole is small and the lower part of the stepped through hole is large. A supporting bearing which tightly matches the mandrel is arranged in the large diameter through hole of the mandrel. The upper end face of the supporting bearing fits the upper end face of the large diameter through hole of the mandrel. The lower end of a support shaft which matches the supporting bearing is fixed on the platform. The platform is fixed with a column parallel to the support shaft. The detection device further comprises a clamp attachment used for clamping a cylindrical roller. According to the invention, the manual operation inaccuracy of an inspector is reduced, and the uncomfortableness of manual roller pinching operation can be avoided.

The invention provides an on-line detection loop, system and method for insulation of high-low voltage electrical equipment. A partial discharge detection loop of a repeated grounding power system isinstalled in a primary loop of electrical equipment to be detected, the primary loop is the repeated grounding power system, and a high-frequency pulse current sensor is connected into a single-phaseor three-phase loop of the primary loop to detect a high-frequency pulse signal in the primary loop; and when the high-frequency pulse current sensor is connected into a three-phase loop of the primary loop, a ground wire reversely penetrates into the high-frequency pulse current sensor. According to the invention, the problem of shunting and circulating current detection of a partial discharge detection technology in the repeated grounding power system is solved, so that the partial discharge detection technology can be applied to enterprise-level 400V, 6KV, 10KV and 35KV power systems, and the application range of the partial discharge detection technology is enlarged. Meanwhile, the development trend of insulation is predicted through an insulation prediction algorithm of the partial discharge capacity change rate, and the detection precision and applicability of partial discharge are improved.

The invention provides a device for rapidly detecting trace water content in an industrial gas. A detection gas passage of the device detects the trace water content in the bottled industrial high-purity gas under the high pressure formed by the bottled gas per se; a resistor-type dew point sensor for transmitting digital signals is adopted in the gas passage; and after detection, the water content is conversed through an instrumental intelligent circuit. The entrance of the detection gas passage is formed by two parallel sets of gas passages which can perform sampling, purging and high-pressure delivery. The two sets of gas passages are controlled by respective switch valves at the entrance of the device to deliver a high-pressure gas sample to the dew point sensor in turn. When one gas passage is in a detection state, the other one is in a purging state, so that the cross-leakage between the two passages of gas samples is avoided. The flow detection switches of the gas passages are mounted behind flow control valves, so that the device is located in the high-pressure gas sample, and when gas to be detected is replaced, the gas samples in the detector and the input pipe thereof are always under the high pressure, so as to enable the balance of data of the detector to be reached within a short time, and the detection is rapid. The detection is both accurate and rapid.

The invention relates to an intelligent gas sensing detection method and a sensing detection system using the same. The system comprises an environment monitoring unit, a gas detection unit and a pre-processing unit; the gas inlet end of the pre-processing unit is connected with the environment monitoring unit and the gas outlet end of the pre-processing unit is connected with the gas detection unit. The method and the system can realize the adjustable gas detection efficiently and reliably, and can realize detection for specific gas concentrations under to-be-detected environments through pretreating harsh environments such as high temperature, high humidity, high pressure and high dust and carrying out collection and processing through a circuit such as a sensor, thereby solving the detection difficulty of gas concentrations under harsh environments and ensuring the high efficiency and reliability of system operation. The system adopts a modular design and has the characteristics ofbeing clear in division of functional modules, strong in scalability and high in usability.