99results about How to "Flexible detection method" patented technology

The invention discloses a positioning device and a positioning method for fault detection of local discharge, and the positioning device comprises two sensors, a local discharge detection positionfinder and a computer, wherein, the two sensors consist of an electromagnetic sensor and a resonant ultrasonic sensor; the local discharge detection positionfinder is internally provided with double-signal paths in parallel; the positioning device also comprises a data acquisition card and a liquid crystal display (LCD) which are connected with the output ends of the double-signal paths; one path of the double-signal paths is an electromagnetic path connected with a peripheral electromagnetic sensor, while the other path thereof is an ultrasonic channel connected with a peripheral resonant ultrasonic sensor; one path is displayed by the LCD connected with the acquisition card, and the other path is sent to a peripheral computer through data wires after signal received by the electromagnetic path and the ultrasonic path is processed by the acquisition card. The test method is simple and flexible, has easy operation and strong anti-interference performance, overcomes the defect of single detection method for local discharge in the prior art, and can realize accurate detection and position on local discharge fault points in power equipment.

An immune chromatographic method includes fixing capture antigen or antibody directly on chromatographic film (PH) by physical absorption means, adding sample liquid and label antibody on sample cushion side of PF and forming immmune composite through immune reaction, detecting formed detection and control belts, sticking PE, sample loading cushion, label cushion and water absorption cushion in sequence on backing. The test paper is also disclosed.

The invention discloses a portable Terahertz remote sensing detector and a remote detection method. The detector comprises a signal generating device, a detector, a processor and an imaging display device, wherein the signal generating device comprises a Terahertz wave radiation source, a broadband tunable laser and a plasma generator; and the detector comprises a receiving element, a detecting element and a signal modulation circuit. The detection method comprises the following steps of: 1, dividing scanning subregions and pixel points and encoding scanning output frequencies of various scanning subregions; 2, arranging an assembly and generating a remote detection signal; 3, performing two-dimensional scanning; and 4, performing signal analysis processing, namely rapidly imaging and generating a Terahertz wave image with frequency spectrum characteristics, identifying a material type of a tested object, generating a charge coupled device (CCD) image and identifying the shape of the tested object. The detector is reasonable in design, easy to operate, flexible in detection mode, wide in application range and good in detection effect, and can fulfill the aims of rapidly imaging and remotely detecting by combining THz and induced fluorescence spectrum analysis with space imaging.

The invention relates to a nanosecond detection system based on a random pulse time sequence of an ultra high-speed data acquisition card, and relates to computer application technology and data acquisition and processing technology, in particular to detection and processing technology for the random pulse time sequence. The system performs data acquisition and on-line detection based on a 1GS/s ultra high-speed A/D converting unit and an FPGA high-speed processing unit, and can quickly and accurately detect pulse time in a quick-logic narrow-pulse sequence. The detection for the pulse time is to calibrate the pulse time by pulse peak positions through a particularly designed PeakTDC hysteretic peak value detection algorithm carried on the FPGA, and the time accuracy is 1ns. The system can obtain TDC time data conversion of quick response random events in finite nanosecond random pulse sequences on a time bin axis, and performs the detection on multi-channel pulse signals on line and highly synchronously with high speed and large capacity.

The invention provides a method and device for identifying risk users. By means of the method and device for identifying the risk users, users who spread junk information related to bad behaviors on purpose can be identified, and accordingly harm caused by the bad behaviors can be further reduced. The method includes the steps that all punished users are acquired as junk users; information initiated by each junk user is acquired, all associated users of the junk users are analyzed through the initiated information, and the weight of the associated users in the junk users is calculated, wherein the associated users are users who interact with the information initiated by the junk users; the junk users corresponding to the associated users are analyzed with the associated users as dimensionality, and the associated users are identified as the risk users according to the junk users corresponding to the associated users and the weight of the associated users in the corresponding junk users; the identified risk users are monitored, and operating authorization of the risk users is limited.

The invention discloses a bearing roller pin size detection system and method based on machine vision. A single low-cost 2D camera is used for collecting images. An industrial camera is used to acquire the images. The acquired images are stored in an industrial personal computer. The industrial personal computer processes the images. Background interference is removed from the processed images byusing horizontal and vertical projection methods, angle correction is performed on an extracted ROI area. A ROI image is converted into a binary image by using a threshold segmentation method, and filling is performed to ensure that an internal color of a contour of a roller pin is white. Contour extraction is performed on the processed image. A detection size of the roller pin is calculated according to a proportional relation between a visual field range of the camera and an image pixel, the roller pin with a qualified size arrives at a storage box along with a transmission belt, and for theroller pin with a unqualified size, an elimination signal is sent to PLC by the industrial personal computer, and an elimination mechanism is controlled to eliminate the roller pin through the PLC. The roller pins moving on an assembly line are detected and removed in real time.

The invention discloses a distributed converter transformer direct current bias detection system and a detection method thereof. The detection system comprises a plurality of detection terminals. Each detection terminal comprises a sensor module, a data acquisition module, a central controller, a communication module, a clock module and a power supply module; the sensor module comprises a microphone, an acceleration sensor and a current transformer. The method comprises the steps of installing a detection terminal in advance, separately acquiring a noise sound pressure level of noise signals, a 1/3 times frequency spectrum, a speed amplitude of vibration signals and a neutral point current effective value in two operation modes which are a normal operation mode of a converter transformer and a single-pole ground-loop debugging operation mode, comparing differences between acquired data in the two operation modes and diagnosing whether the converter transformer belongs to a direct current bias treatment scope according to the difference. The distributed converter transformer direct current bias detection system and the detection method thereof of the invention can overcome problems of a broad distribution scope and a large quantity of transformer stations, do not need excessive manpower and equipment resources, and have advantages of a flexible mode and relatively low cost.

The invention relates to super-resolution dual-axis differential confocal measurement method and device for division focal spot detection, which belong to the technical field of optical precision measurement. By utilizing the characteristic that the transversal deflection of a detector makes the axial response curve of the dual-axis confocal microscopy generate displacement, adopting the transversal differential detection method of a division focal spot to receive and process a measuring optical beam in the dual-axis confocal microscopy, and combining a super-resolution pupil filtering technology, the method and the device achieve the purposes of enhancing the system resolution, extending the working distance, enhancing the anti-jamming capability and improving the linear range. The invention can be used for the precision measurement of microelectronics, materials, industry precision detection, biomedical field and the like.

The invention belongs to the technical field of spectrum measurement, and relates to a high spatial resolution biaxial differential confocal spectrum imaging method and an apparatus. According to the present invention, the biaxial differential confocal microscopy technology and the spectrum detection technology are fused, focal spot cutting differential detection is adopted so as to achieve precise imaging of the geometry position, simplify the optical path structure of the traditional differential confocal microscopy system, inherit the advantages of large visual field and large work distance of the biaxial microscopy technology, and achieve high spatial resolution spectrum integrated detection of the system; and high spatial resolution is provided, three modes such as three-dimensional tomography geometry imaging, spectrum detection and micro-region spectrum tomography imaging are provided, a new solving approach is provided for micro-region spectrum detection, and broad application prospects are provided in the fields of biomedicine, physical material science and the like.

The invention discloses a device and method for detecting the combustion characteristic of tail gas containing high-concentration CO. The device consists of a gas distribution induction system, a combustion system, a data acquisition processing system and a smoke discharge system. In the invention, a combustion chamber of the combustion system adopts a heat-insulation combustion mode, and a good heat insulation effect is realized; the system is uniform and stable; as the smoke discharge system is arranged in the device, the safe operation of the detection is ensured; research on the combustion characteristic of the tail gas with different CO components can be performed, and the research on the combustion characteristic of the tail gas can be performed in laboratories and production practice; and the device has the advantages of high feasibility, flexible detection mode, simple process, high safety, good stability and the like, and can be used for controlling the air input and air ratio.

This invention relates to a method for testing phone signal transmission channels and a call control system, in which, said method includes: obtaining phone signals from the gateway at the fourth line side of the PSTN exchanger, if the PSTN channel stipulated by the national standard and related standard is forbidden to carry the energy gravity larger than a preset threshold, then it is decided that the front of the phone signal is converted from a parameter code to G711 code or transmitted by the IP communication network applying parameter code technology, otherwise, it is judged that said front is transmitted in the PSTN.

The invention provides a digital steel wire rope flaw detection sensor.The digital steel wire rope flaw detection sensor comprises a probe and a plurality of digital communication interfaces, wherein the probe is used for detecting the faulted condition of a steel wire rope and generating corresponding detection signals, and the digital communication interfaces are respectively connected with the probe and an external processor and used for transmitting the detection signals from the probe to the external processor.The digital steel wire rope flaw detection sensor can improve the detection efficiency of steel wire rope flaws and antijamming capability in the detection process, and therefore the accuracy and reliability of a detection result are guaranteed.

The invention discloses an SNP marker for identifying germplasm resources of kidney beans and a screening method thereof. 200 parts of germplasm resources of kidney beans are used a research object, aIIB-RAD technology is adopted, and a standard 5'-NNN-3' linker is utilized to be ligated with a digestion label; after library quality control is quantified, double-end sequencing is performed on anIllumina Hiseq Xten platform to select a minimum SNP locus combination suitable for identifying 200 parts of germplasm resources of kidney beans, which provides technical support for the establishmentof a technical system for high-throughput identification of germplasm resources of kidney beans. The number of SNP markers is high, the coverage of genomes is high, the typing operation is simple andhigh in accuracy, and a uniform standard can be formed in different environments. Compared with the SSR, the SNP has more advantages in species authenticity identification and database construction.SNPs are denser and more uniform in the genomes, making it easier to achieve data integration comparisons and higher throughput.

The invention discloses a fatigue driving monitoring method based on blink detection, and the method comprises the steps: 1, image collection: uploading a face image collected at each sampling moment to an image processor synchronously; 2, image processing: enabling the image processor to carry out the analysis processing of the face images received in each analysis processing period, wherein the analysis processing process comprises the following steps: 201, carrying out the analysis processing of the face images collected in the first analysis processing period; 202, carrying out the analysis processing of the face images collected in the next analysis processing period; 203, repeatedly carrying out the step 202 for M-3 times; 204, carrying out the analysis processing of the face images collected in the next analysis processing period and carrying out the fatigue driving judgment; 205, returning to step 204. The method is simple in step, is reasonable in design, is convenient to implement, is good in use effect, can carry out the accurate monitoring of the fatigue driving state of a driver conveniently and quickly based on the blink detection of a driver face image, and is high in practical value.

The invention discloses an information processing method and electronic equipment. The information processing method is applied to first electronic equipment, and comprises the steps that the first attitude information with the relative attitude between the first electronic equipment and a user being as a first attitude is acquired through a first collecting unit; when a target communication identifier is displayed on a display unit, the second attitude information of the relative attitude is acquired; whether the relative attitude is adjusted to a second attitude meeting a preset condition from the first attitude is judged according to the second attitude information and the first attitude information, wherein the second attitude is different from the first attitude and is the attitude capable of meeting the demand for video call between the first electronic equipment and the user; when the relative attitude is adjusted to the second attitude from the first attitude, video communication connection is established with second electronic equipment corresponding to the target communication identifier. According to the technical scheme, the technical problem that the operation mode is single when the video communication connection is established by the electronic equipment in the prior art is solved, and the number of operation modes for establishing communication connection is increased.

According to the internal attack detection method based on the weighting rule and the consistency in the CPS system, the method is based on a CPS system application scene and comprises four participants, namely credible authority; A control center; A gateway; and a network node. The method comprises the following specific steps: (1) a network node data reporting stage; (2) a behavior rule identification stage; (3) a state machine generation stage according to a rule; (4) a consistency data collection stage; (5) a fitting consistency distribution stage; And (6) an internal attack detection stage. By adjusting and optimizing related configuration parameters such as the rule weight and the normal/abnormal node distinguishing threshold, the detection method has the characteristics of simplicity, flexibility and accuracy.

The application discloses an information processing method, an electronic device and an external device. The method is applied to the electronic device, the electronic device can be physically disconnected from or connected to the external device, wherein when the electronic device is physically connected to the external device, at least part of the area of a first surface of the electronic device can be covered by the external device; a power supply mechanism is also arranged on the electronic device. The method includes the following steps: in the process of physically connecting the electronic device with the external device, whether a first parameter related to the electronic device meets a predetermined condition is detected; when the first parameter meets the predetermined condition, a trigger instruction is generated; the trigger instruction is executed, so that the power supply mechanism is controlled to be in an operating state to charge the external device.