101results about How to "Improve detection coverage" patented technology

The invention relates to a respiratory tract common pathogen multiple PT-PCR combined gene chip detection kit. The kit detects one or more of 22 respiratory tract common pathogens by the usage of multiple specific conservative degenerate primer combination and probe combination and provided with endogenous control, positive control and negative control at the same time. According to the detection kit, the coverage rate for a high mutant pathogen subject sequence is increased, the problem of nonspecific cross reaction between the multiple primers and the probe is avoided, one single reaction system can detect more than 20 respiratory tract common pathogens simultaneously, and a detection tool which is simple and sensitive, rapid and large in flux and capable of carrying out multi-index parallel detection is provided for respiratory tract common pathogen detection.

Disclosed is a dual-rail asynchronous insensitive scan chain circuit designed for test. This scan chain does not require any clock even in scan mode, so it is truly an asynchronous design for testability. The normal function of the asynchronous scan chain can not be affected when removing any clock controls. The handshake protocols between two sequential elements used in the asynchronous scan chain become the scan chain transmission structure, rather than the timing control used in synchronous scan chain in the prior arts. Therefore, both in the function mode and scan mode, the scan chain always operates under the asynchronous condition. It not only can reach a complete test scanning, achieve high fault detection coverage and consume lower power, but also avoid the clock skew problem.

The invention relates to a method for detecting host infection caused by DGA malicious software. The method comprises the steps: extracting DNS data as an original data set; constructing a training data set, extracting and normalizing all data features, training the processed training data features to obtain a stable model, inputting original data set data into the model to obtain a suspicious DGAdomain name list, and performing host infection confirmation on the suspicious DGA domain name list subjected to false alarm filtering. According to the invention, methods such as information entropy, a hidden Markov chain, an N-gram model and the like are adopted to extract features for modeling and predicting suspicious domain names, and whether the DGA malicious program infects the host is judged by calculating statistical characteristics of suspicious domain name requests initiated by the same IP address; the method is compatible with detection of various DGA suspicious domain names, eliminates false alarms by infecting behavior characteristics of suspicious domain names requested by a host, has the advantage of low artificial participation in discrimination, has the advantages of high detection coverage rate, high recognition rate and low false alarm rate, and has practical application value.

The invention discloses an elevator door light curtain detection protection device. The elevator door light curtain detection protection device comprises a detection light eye, a driving mechanism, a transmission mechanism, a control module and a light eye position detection unit; the detection light eye comprises a transmitting end light eye and a receiving end light eye; the transmission mechanism is connected with the driving mechanism and driven by the driving mechanism to drive the transmitting end light eye and or the receiving end light eye to move in a reciprocating mode; the movement speed of the detection light eye is larger than the speed that a user is in or out of an elevator door; the light eye position detection unit is used for determining the movement position of the detection light eye; the control module is connected with the detection light eye and the light eye position detection unit and used for processing a light eye detection signal and a light eye movement position signal. According to the elevator door light curtain detection protection device, the reciprocating movement namely the vertical straight line reciprocating movement or vertical reciprocating swing is performed on the detection light eye through the driving mechanism and the transmission mechanism and accordingly the detection coverage of a light curtain is greatly improved and the blind area can even be avoided through the control on the driving mechanism and accordingly the safety performance of the elevator is greatly improved.

At a social network server, a request is obtained from a first user to upload a digital visual medium (digital photograph or digital video). The digital visual medium is marked for identification thereof. At the social network server, a request is obtained from a second user to upload the digital visual medium. Based on the marking, it is determined whether the request from the second user to upload the digital visual medium is inappropriate.

The invention relates to an SOC chip-oriented multi-clock domain concurrent test system and a test method thereof, and belongs to the technical field of chip detection. The board card system comprises a board card, a clock domain controller, a slot bus controller and a test subsystem, the clock domain controller, the slot bus controller and the test subsystem are arranged on the board card, the clock domain controller is connected with the test subsystem and the slot bus controller, and the slot bus controller is connected with a backboard bus; the test subsystem comprises a test processor and a signal processing unit. The test processor comprises a test pattern memory, a memory controller, a time sequence generator, a pattern generator and an instruction generator. According to the multi-clock domain concurrent test method, the test efficiency of a single SOC chip is improved, and the test cost of the single chip is reduced, so that the profit is increased; the failure detection coverage rate of the chip working in the multi-module concurrent working state is higher, and the yield of the packaged chip is improved.

The invention relates to a diarrhea-related pathogen detection kit combining multiple RT-PCR with a gene chip. According to the kit, a multiple-specificity conserved degenerate primer composition and a probe composition are adopted to detect one or more of 26 diarrhea-related pathogens, and at the same time, endogenous control, positive control and negative control are arranged. By the adoption of the diarrhea-related pathogen detection kit combining the multiple RT-PCR with the gene chip, the coverage rate of target sequences of high-mutation pathogens is increased, the problem of non-specificity cross reaction between multiple primers and probes is avoided, the purpose can be achieved that a single reaction system synchronously detects more than 20 kinds of diarrhea-related pathogens, and a detection tool which is simple, sensitive, rapid, large in throughput and capable of multi-index parallel detection is provided for diarrhea-related pathogen detection.

The present invention relates to a single-particle flip detection system and method for a programmable SOC device in a space radiation environment. In order to solve problems of an off-chip controller measurement manner in an existing single-particle flip detection technology, such as relatively high system complexity, a relatively large overall area and great development difficulty, a single-particle flip detection system and detection method for a programmable SOC chip in a space radiation environment based on in-chip self-detection is provided. The single-particle flip detection system for a programmable SOC device in a space radiation environment comprises a processing system, a programmable logic, a Flash memory and a DDR memory. The processing system has a Flash memory interface, a DDR memory interface and a configuration read-back interface, which are respectively used for connecting to the Flash memory, the DDR memory and the programmable logic. The processing system is used for implementing a configuration read-back function for the programmable logic and a comparison verification function for a read-back result. The system and method provided by the present invention are applicable to spacecrafts.

The invention provides a method for classifying pixel blocks of JPEG images and image falsification detecting and falsified area positioning methods based on the same. The method comprises the following steps of: dividing to-be-detected JPEG images into continuous and non-overlapped 8*8 pixel blocks; taking one pixel block as the center and selecting a square area combined by (2n+1)*(2n+1) pixel blocks as a sub-image; utilizing a first number distribution probability feature of AC coefficients in the front i AC coefficient regions of the sub-image to divide the central pixel block into singlecompression or double compression; and confirming a classifying result as the double compression and a connected region with an area more than M 8*8 pixel blocks as a falsified area. According to themethod provided by the invention, the falsified area can be accurately detected and positioned; the falsified areas of three different falsifying technologies can be detected according to the method;the method is wide in application scope; the method is an automatic blind detecting method for JPEG falsified images and does not require any priori knowledge; and the detection coverage rate is higher and the error detection rate is low.

The embodiment of the invention provides a method and a device for detecting a phishing attack. The method comprises the following steps of recording the occurrence time of a communication application operating event and the occurrence time of a new self-starting item event of an operating system by a terminal; computing the time difference between the occurrence time of the new self-starting item event and the occurrence time of the communication application operating event; judging that the communication application operating event is a phishing attack event if the communication application operating event occurs before the new self-starting item event and the time difference between the occurrence time of the communication application operating event and the occurrence time of the new self-starting item event is smaller than a preset time threshold value. According to the scheme, computation and judgment are performed by using the occurrence time dimensions of the communication application operating event and the self-starting item event of the operating system, and therefore, the phishing attack can be comprehensively detected, the detecting coverage is high, the computation complexity is low, and maintenance and optimization are easy.

Provided is a multi-stall laser detection device which is composed of a laser sensor, laser reflection devices, a scan steering device, a turning angle detection device and a control device. Laser beams emitted by the laser sensor are enabled to perform sector scanning in the air via the scan steering device; a sector scanning area is divided into multiple stall detection areas in advance, and each stall detection area is provided with a set of laser reflection device; the turning angle detection device is used for detecting the sector scanning angle of the laser beams, and the detection result is outputted to the control device; the scanned stall detection area in which the laser beams are positioned is confirmed by the control device according to the detection signal of the turning angle detection device, and existence of parking vehicles in the corresponding parking stalls of all the stall detection areas is comprehensively judged according to laser beam path reflection sensing signals emitted by the laser sensor and reflected by the laser reflection devices so that the effect and the objective of detecting multiple parking stalls in real time can be achieved.

The invention discloses a PCB bracket for an automatic optic inspection device. The PCB board bracket comprises a bracket main body, wherein a cavity for supporting the PCB is formed in the support main body and matched with the PCB in shape; a through hole for scanning is formed in the cavity. The PCB bracket for the automatic optic inspection device uses the bracket main body to support the PCB, so that the devices on the PCB cannot be shielded after clamping, and the inspection coverage rate is improved; when the PCB is clamped and positioned, the larger clamping space can be achieved, and the devices on the PCB are not easy to be damaged.

The invention discloses a drug-induced deafness gene multichannel fluorescence PCR (polymerase chain reaction) detection kit. Two pairs of specific primers and four TaqMan probes are designed according to four sites on the drug-induced deafness related gene mtDNA 12S rRNA: 1555A>G, 1494C>T, 1095T>C and 827A>G, and a pair of specific primers and probes are designed by using the housekeeping gene beta-actin as the internal reference to monitor the effectiveness of the sample template and reaction system and avoid the appearance of false negative; and meanwhile, the setting of the negative and positive quality control ensures the accuracy of the detection result. The kit implements simultaneous detection on four mutant sites of the drug-induced deafness gene in one reaction tube by a multichannel fluorescence PCR process for the first time. The method is simple to operate, has the advantages of high speed, high accuracy, high flux and low cost, avoids the cross contamination due to shut tube operation, improves the purposiveness and screening range of deafness screening, effectively prevents the drug-induced deafness, and is easy for popularization and application.

The invention discloses a large spiral steel pipe quality detecting method, belongs to the field related to steel pipe quality detection, and aims at overcoming the possible quality problem when a steel pipe leaves the factory or is recovered. The method comprises that a detection platform which can bear and rotate the large spiral steel pipe as a detection object is designed; a manipulator is provided with a tail-end execution part with a visual unit and a detection probe to scan and detect the steel pipe, and transmits data to a data center of a background host module for processing; a weldseam detection unit with a visual probe tracks a weld seam to compensate the pose of the tail-end execution part of the manipulator; a probe capable of automatically identifying obstacle avoidance andmulti-lobe damage is designed for an obstacle in the surface of the steel pipe; and a method for detecting the coaxiality of the steel pipe is designed. The invention also discloses a corresponding large spiral steel pipe quality detecting device. Thus, multiple items of the large spiral steel pipe can be detected synchronously, the steel pipe quality detection time is shortened, the detection range is widened, the detection efficiency is improved, and thus, the method and device are especially suitable for occasions which need large spiral steel pipe quality detection.

The embodiment of the invention discloses a pile bottom karst detection method, device and system, electronic equipment and a storage medium. The pile bottom karst detection method comprises the following steps that: a detection signal received by a receiving unit in a first direction in a phased array is acquired; a detection signal received by a receiving unit in a second direction in the phased array is acquired, wherein the second direction is perpendicular to the first direction; the propagation duration of the propagation of the detection signal from a transmitting unit to a pile bottom and from the pile bottom to the corresponding receiving unit is acquired; and a detection result of pile bottom karst is determined according to the amplitude of the detection signal reaching the receiving unit and the propagation duration. In this way, based on high-coverage detection data collection, accurate detection of a pile bottom karst situation is achieved.

The invention discloses a distributed wireless active and passive acoustic fusion detection method for a storage tank bottom plate. According to the distributed wireless active and passive acoustic fusion detection method, a certain number of acoustic wave sensors are evenly distributed at a tank bottom edge plate, thus active acoustic excitation waves are stimulated, meanwhile, active acoustic excitation modulation signals and passive acoustic emission signals are collected, fusion analysis and processing of frequency domain and time domain information can be completed, and thus images of defect distribution, size and corrosion activity degree (activity) of the storage tank bottom plate are formed. According to the distributed wireless active and passive acoustic fusion detection method,a sensor point-by-point detection mode of a traditional ultrasonic guided-wave technology is changed, an active acoustic excitation detection method for a sensor array fixed to the tank bottom is adopted to change the acoustic signal excitation mode and a defect modulation signal extraction mode, the detection coverage range is expanded, and the defect position and size are obtained; the passive acoustic emission detection method is fused to detect active corrosion of the storage tank bottom plate, the detection efficiency is greatly improved, and meanwhile, the evaluation results are more comprehensive, intuitive and reliable; and detection data are transmitted through a wireless communication module, and thus remote monitoring can be achieved.

The invention provides an installation technique quality detection system of an electric energy metering device based on image recognition. The detection system comprises an application service system, a database management system, a data storage system, a terminal service application system, an image processing system and a big data analysis system. A worker receives a work order task through the terminal device, and shoots designated construction steps by use of the terminal device in the construction place. A backstage system carries out image recognition on the onsite pictures and obtains real-time evaluation. The terminal device feeds back the evaluation results to the worker and carries out onsite guidance. After all detection reports are gathered, big data statistical and analysis results can be displayed to a manager. According to the invention, by adopting the image recognition technology of HIS, HOG, SVM and the like, automatic detection is performed on installation technique quality of the electric energy metering device; timeliness, automation and comprehensive coverage are achieved; a set of complete detection system is established; and installation quality levels of the electric energy metering device can be comprehensively, precisely and objectively reflected.

The invention relates to the field of road traffic security and discloses a pedestrian crosswalk prewarning implementation method and a prewarning system. The design idea of the pedestrian crosswalk prewarning implementation method is as follows: when a pedestrian passing through a pedestrian crosswalk is detected in a pedestrian detection area, an intelligent road sign embedded in the road automatically becomes flash yellow, and meanwhile, a high-brightness sign displays a text indicator, thereby reminding an automobile driver to watch for the pedestrian and taking deceleration measures in advance.

The invention provides a memory security detection method and a system on chip, the system on chip comprises a security policy controller and a memory to be detected, and the security policy controller comprises a detection module. The security policy controller receives a detection signal which carries a to-be-detected fault and/or an attack identifier of the to-be-detected memory, and obtains a detection algorithm corresponding to the to-be-detected fault and/or the attack identifier from the off-chip memory according to the to-be-detected fault and/or the attack identifier; and the off-chip memory stores detection algorithms corresponding to various fault and/or attack identifiers, the detection module is configured according to the obtained detection algorithms to obtain a detection circuit, and the detection circuit is utilized to judge whether the to-be-detected memory has a to-be-detected fault and/or attack. Security detection of corresponding faults and/or attacks of the to-be-detected memory is achieved, multiple complex detection circuits do not need to be deployed in the system at the same time, corresponding detection algorithms are called according to different detection signals to configure the corresponding detection circuits, power consumption is reduced, and efficiency is improved.

The embodiment of the invention discloses a wafer defect detection optimization method and device, and relates to the technical field of semiconductors, and the method comprises the steps: receiving a target wafer box and obtaining corresponding mantissa information, the mantissa information is used for distinguishing detection batches, and to-be-detected wafers produced through all cavities are placed in the target wafer box; determining a target detection item of the target wafer box, and carrying out spot check on target wafers with corresponding numbers from the target wafer box according to the target detection item, a corresponding wafer spot check mechanism and mantissa information; wherein different detection items correspond to different wafer sampling inspection mechanisms, and the wafer sampling inspection mechanisms are used for determining and calculating the number and mark numbers of sampling inspection wafers; and performing defect detection on the selected target wafer.

The invention provides a joint driving module, a seven-axle mechanical arm and a robot. A first stator winding and a second stator winding are arranged on the radial inner side and the radial outer side of a rotor winding of a motor rotor; a driving motor adopts a double-winding motor to provide higher torque under the same size, so that the joint driving module can achieve higher rotating speed and torque under the smaller size; a first joint, a fifth joint and a seventh joint are arranged as rotating joints; a second joint, a third joint, a fourth joint and a sixth joint are arranged as swing joints; and through the arrangement mode, the robot not only can guarantee enough arm extension and covering range, but also can prevent excessive size of single arm tubes, in particular the sizes of second to fifth mechanical arms, so that various complex actions can be flexibly realized, the flexible detection covering range is widened, and the application effect of the robot in narrow space can be improved.