127results about How to "There will be no missed detection" patented technology

The invention discloses a computer vision-based real-time detecting and tracking method for an electric power transmission circuit of an aircraft in a complicated natural environment background. The method comprises the steps of: firstly extracting a pixel point cloud of the electric power transmission circuit by using an anti-noise gradient image and a maximum between-cluster variance algorithm; then screening detected straight segments in a Hough space by utilizing a K-means algorithm; and tracking and detecting according to the straight segment information detected by previous frame of video image by using a Lalman filter. The method has the advantages that: the influence of illumination on the detection of the electric power transmission circuit is eliminated, the detection accuracy of the electric power transmission circuit is improved, the detection time is shortened, the workload of inspecting workers is relieved, the inspecting efficiency is improved, and the phenomenon of the missed detection of the electric power transmission circuit in the inspection process is avoided.

The invention discloses a linear array CCD-based ABS gear ring defect online detection device and method. A linear array CCD camera is used for performing linear scanning on an ABS gear ring to be detected, and based on the splitting of an image processing technology of the linear array CCD, the gray level image recurrence and defect detecting processing are realized. A complete gray level image can be acquired by only one circle of rotation of the ABS gear ring, thus realizing defect complete scanning detection. The linear array CCD camera has the characteristics of high flexibility, large dynamic range and high frequency response, and the linear array CCD camera is used for performing defect detection of the ABS gear ring, and can realize the detection more accurately and faster compared with the prior art. The linear array CCD image processing technology-based ABS gear ring online defect detection device is suitable for ABS gear rings of different types and more accords with actual needs.

The invention relates to a large-scale fast matching method in sentence level. The method of the invention comprises three stages which are index establishment, fuzzy matching and exact matching. The state of index establishment is in charge of carrying out the standardization of sentence content and conversion of code; the fuzzy matching stage is for picking up candidate sentences possible to match with new sentences from numerous sentences, and the number of the candidate sentences is controlled in a practicable range; the exact matching stage adopts a similarity measure algorithm based on edit distance; the final matched sentences are then obtained by arranging the candidate sentences according to the similarity of the exact matching. The method of the invention has the advantages of excellent performance of actual test, high efficiency of search, low undetected rate and being capable of meeting practical requirements.

The invention discloses a method for detecting a flaw of an angle steel member by using ultrasonic guided waves. The method comprises the following steps of: (1) establishing a finite element model of the angle steel member according to the external dimension, the mechanical property and the wave velocity of the angle steel member; (2) simulating the propagation process of the ultrasonic guided waves excited by a plurality of detection sensors on the finite element model; (3) arranging the detection sensors on the angle steel member; (4) exciting the ultrasonic guided waves which generate echoes in the angle steel member when the ultrasonic guided waves encounter the flaw in a special mode through a manner that pulse wave signals generated by an arbitrary function generator pass through a power amplifier, a change-over switch and the detection sensors, and obtaining the waveform chart of echo signals through a manner that the echo signals pass through the detection sensors, the change-over switch and an oscilloscope; and (5) calculating to obtain the position x of the flaw of the angle steel member in the length direction. According to the method for detecting the flaw of the angle steel member by using the ultrasonic guided waves, the detection is carried out through exciting the ultrasonic guided waves at one end of the angle steel member and receiving the flaw echoes and is convenient and fast, the detection cost is low, and the comprehensive detection on the angle steel member can be realized.

The invention provides an indoor intelligent mobile robot and a control method. The global advancing path of the robot includes a plurality of key point positions of the path; when an obstacle existsin the advancing path, an obstacle avoidance point is arranged out of the original path, a local path of the robot advancing to the obstacle avoidance point from the current key point is planned, andafter the robot advances to the obstacle avoidance point along the local path, a local path of the robot advancing to a next key point from the obstacle avoidance point is planned again; and if a newobstacle appears during the process of the robot advancing along the local path, another obstacle avoidance point is set. A three-dimensional lidar is adopted for laser oblique shooting, the scanningpoint of the laser avoids a dynamic obstacle, and thus, laser data reflecting the surrounding environment information are acquired for building a surrounding environment map. Trackless autonomous navigation in an indoor complex environment with human mobility can be realized.

The invention discloses an X-ray machine for checking whether human mammary tissue is normal. The X-ray machine mainly comprises a prone position bed, a bulb tube for transmitting X rays and a breast compressor, wherein the prone position bed is provided with two breast through holes; the bulb tube for transmitting the X rays is arranged on a side surface of the breast compressor; and the breast compressor and the bulb tube are arranged below the prone position bed and are positioned corresponding to the two breast through holes. A vertical frame of the traditional mammary X-ray machine is arranged as the prone position bed, so a checked person lies on the bed at a prone position, two breasts are exposed out of the two breast through holes and naturally sag due to attraction of gravitation, and the entire sagged breasts can be compressed by the breast compressor below the bed. Therefore, X-rays can permeate the breasts completely, and missed check cannot occur.

The invention relates to a paper tube detection machine. The paper tube detection machine comprises a frame, a feeding device and a discharging device. A control assembly for controlling rotation of paper tubes on the frame, a first camera for taking a picture of the surface of the paper tube and a second camera for taking pictures of two end surfaces of the paper tube are arranged on the frame. A personal computer (PC) for determining if the paper tube has qualified quality is arranged on the frame. The paper tube is rotatingly connected to the frame by the control assembly, pictures of the surfaces and end surfaces of the paper tube are respectively taken by the first camera and the second camera and the PC compares the pictures taken by the first camera and the second camera and data stored in the PC so that a paper tube qualified rate is determined. The paper tube detection machine replaces the existing artificial detection process, reduces labor intensity, improves detection efficiency and prevents detection missing and false detection.

The invention provides an in-tunnel vehicle detection method based on monitored images. The method comprises the following steps: a processor receives in-tunnel road surface area images at a present tunnel illuminating lamp brightness level acquired by a monitor camera in real time; processing is carried out according to characteristic areas of the road surface area images and characteristic areas of background images which are the same with the road surface area images in terms of illuminating lamp brightness; the background images are images acquired when no vehicle exists in a tunnel; and the processor determines whether a vehicle exists in a tunnel according to the processed result. The invention realizes detection of vehicles in the tunnel, and raises the accuracy of detection results.

The invention relates to the technical field of detection equipment and particularly relates to a material slice detection machine. The material slice detection machine comprises a frame provided with a lifting unit for controlling the raising and dropping of material slices, a feeding unit for storing material slices to be measured, a propelling unit for pushing the material slices from the lifting unit to the feeding unit, an optical detecting unit for detecting the material slices, a moving unit for fitting to the optical detecting unit, a clamping unit for clamping and moving the material slices from the feeding unit to the moving unit, and an unloading device for unloading the detected material slices. Through cooperation of the multiple units, feeding, detection and discharge of the material slices are automatically finished and unqualified LED lenses are directly labeled so that a staff can visually find and select the unqualified LED lenses.

The invention discloses a chain detection device and a tension adjusting device for the chain detection device. The chain detection device comprises a bottom cabinet, a gravity sensor and bottom plates, an embedding groove is formed in the top of the bottom cabinet, the gravity sensor is installed in the embedding groove, and two sets of bottom plates are installed at the top of the bottom cabinet; cylinders are installed at the tops of the two sets of bottom plates, lifting structures are installed on the bottom walls of the cylinders, the outer surfaces of the two sets of cylinders are sleeved with lantern rings, and long rods are installed on the outer walls of one sides of one set of lantern rings and one side of the lifting structure. When the device is used, the top end and the bottom end of a chain can be connected with the two sets of limiting plates through the internal separation grooves correspondingly, the mode of fixing the chain can be used for chains of different specifications, tension detection can be conducted on the fixed chain through the cooperation effect of the lifting structure and the gravity block, and gravity adjustment can be facilitated; the device can perform dead knot detection on the chain, and the electric telescopic cylinder in the device can be conveniently disassembled and overhauled.

The invention discloses a method and primer for detecting gene mutation relevant to the hereditary blood coagulation factor XI(F11). The primer comprises 15 pairs of primers with amplification detecting all-exon sequences. The Sanger sequencing technology and the sequencing primers are adopted. Hereditary blood coagulation factor XI(F11) deficiency disease all-exon and relevant mutation can be fast detected. The detecting result completed through the method and primer is accurate, diagnosis of the hereditary blood coagulation factor XI(F11) deficiency disease can be assisted, and the method and primer have important reference significance on early intervention, early treatment and antenatal diagnosis.

The invention relates to a breast examining system. The breast examining system comprises a prone position bed, a first movable lifting device, a molybdenum target X-ray examination device, a second movable lifting device and a B-ultrasonic examination device, wherein the first movable lifting device is contained inside the prone position bed, the molybdenum target X-ray examination device is fixed on the first movable lifting device, and the B-ultrasonic examination device is fixed on the second movable lifting device. The molybdenum target X-ray examination device is used for conducting X-ray examination on breasts. The B-ultrasonic examination device comprises a B-ultrasonic probe and is used for conducting B-ultrasonic examination on the breasts. According to the breast examining system, molybdenum target X-ray examination and B-ultrasonic examination are combined, the dual-positioning function is achieved for abnormality of breast tissue, and therefore the breast examining system has high accuracy rate for examination of the abnormity of the breasts.

The invention relates to the technical field of unmanned surface vehicle environment sensing, in particular to an unmanned surface vehicle environment sensing method based on a single-line laser radar. For the near-distance obstacle avoidance requirement of a small-sized high-speed unmanned surface vehicle during autonomous sailing, invalid echoes of the water surface are filtered according to thepoint cloud reflection intensity in the detection step; DBSCAN clustering parameters are adjusted according to an obstacle distance; inter-frame data matching is performed by adopting a nearest neighbor data correlation method in the tracking step; motion state estimation is performed by using interactive multiple models under a linear Kalman filter framework; and a noise covariance matrix methodis adaptively adjusted according to the maneuverability of targets so as to enhance the adaptability of a filter. According to the method, the detection and tracking within a 40-meter range can be well completed in a low-sea condition scene; the laser radar almost does not cause leak detection in an environment free of wind waves and where the unmanned surface vehicle stably runs; the clusteringerror rate is relatively low in the point cloud clustering and target correlation problems; and the inter-frame targets can be well matched.

The invention discloses a primer for detecting WRAP53 gene mutation of a patient with dyskeratosis congenita and application of the primer. The primer for detecting the WRAP53 gene mutation condition comprises a primer for amplifying a whole exon sequence of the WRAP53 gene as well as a sequencing primer for detecting the gene of WRAP53. By virtue of the primer, the mutation of the whole exon of the WRAP53 gene in the patient with the dyskeratosis congenital can be rapidly detected. A detection result finished by virtue of the primer is accurate, and the mutation condition of the whole exon sequence of the WRAP53 gene in the patient with the dyskeratosis congenital can be rapidly detected, so that the primer has important reference significances on the early intervention and the early treatment.

The invention provides a method and device for detecting a switching event through an event detection algorithm based on hypothesis testing, and relates to the field of electric power detection. The method comprises the following steps: calculating goodness-of-fit values of all samples according to a detection window, a reference data set and a goodness-of-fit value formula, and determining a sample point with the maximum goodness-of-fit value as a suspicious sample point; taking the suspicious sample point as a base point, and taking a first sample window and a second sample window of which the lengths are a preset number from front to back; calculating a calculated value of the statistic Z; obtaining a calculated value of the probability value P according to the calculated value; and under the condition that the samples have significant difference, determining the suspicious sample point as a switching event occurrence point. According to the technical scheme provided by the invention, event inspection is only carried out on suspicious points, so that the operation is simple and rapid, the identification precision of the switching event is still ensured when the electric power isrelatively high, missing inspection is avoided, and the robustness is relatively high.

The invention provides a locomotive running part equipment detection system and belongs to the detection of locomotive running parts. The locomotive running part equipment detection system is to solvethe problem that false checking and missed checking are easily caused because the checking of an existing locomotive running part depends on manual operation. The locomotive running part equipment detection system comprises trackside equipment and engine room equipment; the trackside equipment comprises a wheel sensor and an image collection device; the engine room equipment comprises a locomotive information collection unit, an image collection control unit, a storage unit and a fault recognition unit; the wheel sensor collects a wheel signal and transmits the wheel signal to the locomotiveinformation collection unit when a locomotive passes; the locomotive information collection unit calculates a locomotive speed and a wheel base; the image collection control unit controls a starting time of the image collection device and a shooting frequency of the image collection device according to the locomotive speed and correspondingly shoots images of a speed sensor, a machine sensing coiland an electronic label; the storage unit stores the images shot by the image collection device; and the fault recognition unit recognizes faults of the images stored in the storage unit. The locomotive running part equipment detection system is used for checking railway locomotives.

The invention discloses nucleic acid and a kit used for detecting polymorphism of COX-1, COX-2 and GPIIIa genes as well as detecting method for detecting polymorphism of the COX-1, COX-2 and GPIIIa genes, and the method is strong in specificity, is high in sensitivity, is high in accuracy and is simple to operate. The detected results can provide guidance meaning for aspirin resistance. The detecting method provided by the invention adopts completely closed-tube operation, is simple to operate, is convenient and quick, obtains the detected results by directly detecting a fluorescence signal value in a PCR process, PCR post-treatment or electrophoresis detection is not needed, the problems such as easy pollution and false positive results in the conventional PCR technology are overcome, the nonspecific amplification problem can be effectively avoided, and therefore, the nucleic acid, the kit and the method are suitable for large-scale sample detection.

The invention provides a clamp detecting device, and belongs to the technical field of vertical continuous electroplating. The clamp detecting device comprises at least one color sensing device, which is arranged on the side where a clamp stays so as to obtain the current color value of the clamp; then obtained color value is compared with a standard color value, and if the difference between the obtained color value and the standard color value is greater than a threshold value, an abnormal signal is output. The provided clamp detecting device solve the problem that at present, copper is deposited on clamps for vertical continuous plating line, thus the clamps should be checked by persons, and a large amount of human cost is consumed. The provided clamp detecting device can automatically detect copper covered clamps, the human cost is reduced, and the detection accuracy is high.

The invention discloses equipment and method for detecting the air impermeability of a wheel hub. The equipment comprises a rack, wherein the rack is provided with a power supply, an air source, a conveying mechanism, a sealing pressure mechanism and a charge detection mechanism; the sealing pressure mechanism comprises a first pressing block, the first pressing block is fixedly connected with a rotating shaft, the rotating shaft is connected onto the rack in a rotating manner; the rack is further provided with a rotary table and a stepper motor, the rotary table is driven by the stepper motor to rotate, the rotary table is fixedly connected with a cylinder, the cylinder is fixedly connected with a second pressing block, the first pressing block and the second pressing block are arranged in a matched manner, a gas tube and a first spray point are arranged on the side, close to the second pressing block, of the first pressing block, the gas tube communicates with the air source, a second spray point is arranged on the side, close to the first pressing block, of the second pressing block, the first spray point is electrically connected to one electrode of the power supply, and the second spray point is electrically connected to the other electrode of the power supply. According to the equipment, the air impermeability of the wheel hub can be detected at high precision, and the cost of detection compared with the prior art is relatively low.

The invention discloses a PCB-based T-type topology structure line length inspecting method, which comprises the following steps: determining a signal line of the T-type topology structure to be checked; Determining a backbone length and a branch length corresponding to the signal line; Using preset line length inspection rules, inspecting the backbone length and branch length of the signal line to determine signal lines that do not meet the line length inspection rules. As can be seen, in this technical scheme, After determining the backbone length and branch length of the signal line, The signal lines which do not meet the requirements can be automatically screened out through the preset line length inspection rules. The method of automatically inspecting whether the T-shaped topology wiring of the PCB meets the requirements can reduce a large number of working hours, shorten the development cycle, avoid detection missing, and has wide application range and high popularity. The invention also discloses a PCB-based T-type topology structure line length inspecting device, an apparatus and a readable storage medium, which can also realize the technical effect.

The invention discloses a yawning discrimination method based on an active infrared video. The method comprises the following steps that step one, a video frame is acquired through an active infrared camera and a face image is detected; step two, the mouth movement area is defined in a face detection box; step three, Prewitt and Canny fusion edge detection is performed in the defined mouth movement area, and the fusion edge longitudinal projection ratio R<y> is calculated; step four, the threshold T<R> of quasi yawning is determined; and step five, yawning discrimination is performed. The method is characterized in that the mouth movement area is defined in the face box, and then statistics of the Prewitt and Canny fusion edge longitudinal projection ratio in the defined area is performed to judge the yawning state so that the discrimination reliability is high.

The invention discloses a reading recognition method of a pointer-type meter based on machine vision, which comprises the following steps: extracting all straight lines of an instrument panel in an image to be recognized by using an LSD straight line detection algorithm; using length constraint and center constraint to filter out the non-pointer line segment to get pointer line; taking the lengthof pointer line and the distance between pointer line and the center point of circle as weighted values, the deflection angle of instrument pointer in the image to be recognized is obtained by linearweighting and taking the artificial virtual 0 DEG standard line as a reference; and the deflection angle of instrument pointer in the image to be recognized is obtained by linear weighting. The deflection angle of the instrument pointer in the template image is obtained by executing the steps for the template image, and the pointer-type instrument reading in the image to be recognized is obtainedby combining the known parameters of the template image. The method of the invention can realize the reading recognition of the pointer type instrument in the intelligent patrol inspection system of electric power, chemical industry, petroleum industry and the like, and has the advantages of good practicability, strong real-time performance and high accuracy rate of reading recognition of the pointer type instrument.

The embodiments of the invention disclose a capsule endoscope, an endoscope system and an image acquisition method for the endoscope. The capsule endoscope comprises a shell; an image acquisition system, comprising a lens and an image processing device; and a visual angle control device connected with the image acquisition system, wherein the visual angle control device is used for controlling a visual field angle mode of the capsule endoscope according to attitude information on the capsule endoscope, and the image acquisition system acquires images in different visual field angle ranges whenthe capsule endoscope is in different visual field angle modes; the lens is arranged at the end part of the capsule endoscope and acquires first image information through a pupil entrance visual field angle; and the image processing device is used for processing the first image information according to the visual field angle mode so as to obtain second image information. According to the capsuleendoscope, the endoscope system and the image acquisition method, disclosed by the embodiments of the invention, the visual field angle mode can be switched to acquire images of higher quality, reducedistortion of the images and facilitate image mosaicking; and meanwhile, a data transmission quantity is reduced.

Embodiments of the invention provide a digital signal processing method, a system and a piece of equipment for heart rate measurement. The method provided by the embodiment of the invention comprises the steps as follows: pre-processing data of a digital signal A, carrying out data filtering to form a point set T, grouping the point set T according to a distance d, extracting the maximum value of a point in the digital signal A corresponding to the position of the midpoint of each group, and recording the position of the point with the maximum value in each group in the digital signal A to form a new point set S; calculating the average distance d(S) of the point set S, and calculating the heart rate q according to the average distance d(S) of the point set S and the sampling frequency f; and outputting the heart rate q. According to the method of the invention, real-time processing can be carried out completely on a cheap single chip microcomputer, and calculation is carried out in a time-domain signal. The method is simple, easy to implement, and high in portability. The accuracy of measurement is high under low sampling rate. The method has extremely high anti-noise property, heartbeat rush missing-detection is avoided, the measurable environmental adaptability is high, and zero-probability heartbeat rush missing-detection can be realized even in changeable signal samples.