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33results about How to "Improve detection effectiveness" patented technology

Method and device for detecting scanning attack

After some embodiments, the present invention discloses a method and a device for detecting scan attacks. The present invention parses the received message information and records the information of the destination port or the IP address in the message information; then the times, for which the destination port or the IP address are recorded in a scheduled time, are counted; and finally when the recorded times of the destination port or the IP address reach a predetermined threshold, then the present invention judges that a scan attack occurs. The device of the present invention comprises a first unit, which parses the received message information and records the destination port or the IP address, a second unit, which is used to count the times for which the destination port or the IP address are recorded in a scheduled time, and a third unit, which is used to judge that a scan attack occurs when the recorded times of the destination port or the IP address reach a predetermined threshold. In every technical scheme of embodiment, the present invention effectively detects scan attacks according to the times of the port or protocol attack in a scheduled time, thus reducing the false alarm rate and the realization difficulty of scan detection.
Owner:NEW H3C TECH CO LTD

Natural light interference resistant intelligent gas meter and gas sampling and detecting method

The invention provides a natural light interference resistant intelligent gas meter. One surface of a sampling plate provided with components and parts is toward to a sampling character wheel, and adistance between a photoelectric detector on the sampling plate and the circumference of a sampling character wheel is not more than 1mm; the sampling character wheel is provided with numbers and a reflecting surface, the numbers comprise reference numbers and general numbers, and the reference numbers are arranged above and below the reflecting surface; the heights of the reference numbers are slightly lower than that of the general numbers. The invention further provides a gas sampling and detecting method, which comprises a light protecting and detecting step, a sampling step and a standby step. According to the gas meter provided by the invention, and the distance between the sampling plate and the sampling character wheel can be controlled and the proper color of the sampling character wheel can be selected, so that the incident dose of outside light rays can be reduced, the emission current of an optoelectronic switch tube can be reduced, and the reliability of the intelligent gas meter can be improved; furthermore, according to the gas detecting method provided by the invention, the effectiveness of the detection can be ensured by the light protecting and detecting step, and the low energy consumption of the operation can be realized by the standby step.
Owner:彭红军

Human epididymis protein immunoassay kit and using method thereof

The invention discloses a human epididymis protein immunoassay kit and a using method thereof. The effective components of the kit comprise a labelled immune gold nanoparticle reagent and a Fe3O4@Au immune nanoparticle reagent in a volume ratio of 1 to 1 and are materials based on surface enhanced raman spectroscopy and core-shell magnetism. The using method comprises the following steps: after activation treatment on surface carboxyl in the gold nanoparticle, injecting a human epididymis protein antibody to obtain the labelled immune gold nanoparticle reagent; after amination modification on the surface of Fe3O4, mixing Fe3O4 with the gold nanoparticle, and injecting the human epididymis protein antibody to obtain the Fe3O4@Au immune nanoparticle reagent with good magnetism and excellent SERS enhanced activity. The kit is mild in using conditions and is capable of adopting a portable detection instrument without needing large-scale instrument and equipment. According to the kit disclosed by the invention, as the detection limit of human epididymis protein can achieve femto level, the sensitivity is high; as the basement of the kit has the characteristic of recycling use, the detection cost is lowered.
Owner:SUZHOU UNIV

Mouse activeness detection method and system based on deep learning and sanitation evaluation method

The invention discloses a mouse activity detection method and a mouse activity detection system based on deep learning, and a sanitation evaluation method. The method comprises the steps: obtaining amouse activity video, and obtaining a training data set; constructing a RetinNet network model, and importing the training data set into the RetinNet network model for training to obtain a mouse detection model; utilizing ImageAI to call a mouse detection model to identify a target object in each frame of picture of the to-be-detected video, and outputting a candidate box of the target object in each frame of picture and a corresponding class probability; according to the candidate boxes and the class probabilities, filtering the candidate box corresponding to each frame of picture by adoptinga non-maximum suppression algorithm to obtain a target box set for each frame of picture; and according to each frame of picture and the target frame set, adopting a target counting algorithm to obtain the occurrence frequency of mice in the to-be-detected video, and evaluating whether the environmental sanitation is qualified or not according to the occurrence frequency. According to the method,a large amount of manpower is saved, the effectiveness and reliability of target object detection are high, and good reference data can be provided for sanitation evaluation.
Owner:HANGZHOU DIANZI UNIV

Underwater wireless sensor communication networking system based on optical communication

The invention discloses an underwater wireless sensor communication networking system based on optical communication. The system comprises a water surface communication platform and underwater nodes,the underwater nodes comprise a sensor group, an optical communication assembly and a self-powered module. The underwater nodes collect data information and transmit the data information to the watersurface communication platform through communication. The networking system further comprises an underwater vehicle. The underwater vehicle is also provided with an optical communication assembly anda sensor group; data transmission is carried out between the underwater vehicle and the underwater nodes, the range of a communication networking system is greatly expanded; compared with a traditional optical communication networking mode, the optical communication networking mode is more flexible and gets rid of cable constraints, and the bit error rate is lower, compared with the prior art, thedevice is simple in structure and higher in speed, more visual, accurate and rich underwater information is provided, the bandwidth is larger, development of big data transmission is facilitated, anoptical communication probe and a detection probe can be cleaned regularly, algae or microorganisms can be prevented from wrapping the optical communication probe and the detection probe, the detection effectiveness is improved, and normal communication is guaranteed.
Owner:南昌理工学院

Bot process detecting and classifying method combining with dynamic and static characteristics

The invention discloses bot process detecting and classifying method combining with dynamic and static characteristics. Bot process detection is performed based on static characteristic information; an improved TF-IDF algorithm is adopted for characteristic selection in the detecting process, wherein the improved TF-IDF algorithm is that a category distinction degree factor GF is added when a TF-IDF weight is calculated through a TF-IDF algorithm and is used for representing the ratio of the appearance degree of characteristic items in a certain category and the appearance degrees of the characteristic items in other categories; detected bot processes run, API sequences and network traffic information during bot process running are extracted, and family classification characteristics of the bot processes are obtained through processing; based on the family classification characteristics of the bot processes, the bot processes are classified. By adopting the bot process detecting and classifying method, automatic classification can be performed, consumed time can be shortened, and the classifying efficiency can be improved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Refrigerant leakage detection method and air conditioner

The invention provides a refrigerant leakage detection method and an air conditioner. The refrigerant leakage detection method comprises the following steps of S1, operating the air conditioner, judging whether a refrigerant is proper or no, if so, executing the step S2, and if not, executing the step S4; S2, judging whether a preset detection triggering condition is met or not, if yes, executingthe step S3, and if not, executing the step S1; S3, performing refrigerant leakage verification judgment, judging whether verification judgment conditions are met or not, if yes, determining refrigerant leakage, and if not, executing the step S3 again; S4, judging whether a high-pressure side leakage judging condition is met or not, if yes, determining that the high-pressure side leaks, and if not, executing the step S5; and S5, judging whether a low-pressure side leakage judging condition is met or not, if so, determining that the low-pressure side leaks, and if not, executing the step S1 again. The refrigerant leakage detection method can improve the effectiveness of refrigerant detection and enhance the safety of a whole air conditioner system; and the method can achieve the comprehensive benefits of accurate judgment, energy conservation and safety.
Owner:AUX AIR CONDITIONING LTD BY SHARE LTD

Limo alarm system

The invention relates to the technical field of vehicle safety using, and provides a limo alarm system. The limo alarm system comprises a human body infrared induction module, an information processing module, a power module and an alarm output module. The power module is used for providing power supplies for the human body infrared induction module, the information processing module and the alarmoutput module, a transmitting probe and a receiving probe are arranged in the human body infrared induction module, and the transmitting probe transmits infrared rays to detect an object getting close to a back door; when it is detected that the object gets close to the back door, an infrared signal is returned back to the receiving probe, the receiving probe outputs an infrared signal to the information processing module, and a horizontal detection angle between the transmitting probe and the receiving probe is 10-20 degrees; and the alarm output module is used for receiving a voltage valuesignal, and when a voltage value is larger than a set value, an alarm is output. According to the limo alarm system, compared with the prior art, technical detection can be more accurate through the limo alarm system.
Owner:林小杰 +1

Fluid system component mechanical property detection device, detection system and detection method

The invention discloses a fluid system component mechanical property detection device, system and method. The device comprises a detection platform rack, an ascending disturbance detection mechanism is disposed at the top of the detection platform rack, and an immersion unit main body mechanism and a descending disturbance detection mechanism are disposed below the ascending disturbance detectionmechanism. A supporting base mechanism used for strengthening supporting and reducing external disturbance is installed at the bottom of the detection table rack, so that an effective simulation sceneof the fluid systems is established, and disturbance force or vibration mechanical property detection is conducted on components associated with the multiple fluid systems at the same time, and on the layout design of related sensors and flow paths. Therefore, inherent orientation and stress characteristics of fluid system components in a fluid system are reserved, and the situation that effective signals are excessively lost due to a transmission path or structure of disturbance signals under a complex structure is avoided; therefore, rapid and high-precision accurate measurement of the sensor on disturbance is achieved.
Owner:ZHEJIANG CHEER TECH CO LTD

Double-layer detection method of multidomain SDN control node failure

The invention discloses a double-layer detection method of multidomain SDN control node failure. The method comprises the following specific procedures: heartbeat detection is executed for a control plane, wherein a result of detection is that a heartbeat request and a heartbeat response of the same control node C both are failed; then, detection of a data plane is executed; the control plane monitors a state of the data plane, when the control node D receives a LLDP sent by the data plane, the control node C is a master control node of a subdomain P, the control node D is a slave control nodeof the subdomain P and the LLDP is sent by the subdomain P; and then, the control node C is failed, and failure recovery is started at the same time. The method provided by the invention optimizes and reduces failure detection time and realizes fast detection and locating for the failure, reduces interval time of the failures in a network and improves reliability of a global network.
Owner:XI AN JIAOTONG UNIV

Method for determining pesticide residue in vegetables by gas chromatography

The invention discloses a method for determining pesticide residues in vegetables by gas chromatography. The method includes the following steps: pretreating a sample, taking 15.00 g of a homogeneoussample to be tested into a 200 mL flask, adding 15 mL of acetonitrile, homogenizing the sample with a high-speed homogenizer for 90 seconds, filtering the sample into a stoppered cylinder containing 5g of sodium chloride in advance, shaking the cylinder well, and standing for 25min; transferring 15mL of the supernatant to a small beaker, and adding about 8g of anhydrous sodium sulfate to well mix;purifying, whirling in a vortex mixer for 10min, centrifuging at 4000r / min for 5min, collecting the acetonitrile solution into a concentration bottle, adding 5mL of acetonitrile and repeating the extraction, making up the volume to 2mL with acetone, purifying with a ZuEChERS purification tube; carrying out gas phase detection by the gas chromatography; and checking the recovery rate, and analyzing the results. In the present invention, the extraction solution is appropriately concentrated and then subjected to purification treatment to improve the detection sensitivity of the method. In this method, consumption of solvents is reduced and time is saved. The method is suitable for the rapid screening of pesticide residues in vegetable samples. The method enables high detection efficiencyand is worth popularizing and applying.
Owner:江苏韵沣检测有限公司

Attack defense method, system and defense device for abnormal system call

The invention relates to an attack defense method, an attack defense system and an attack defense device for abnormal system call, and the method comprises the steps: obtaining a system call sequencefrom an operating system when detecting that a program is executed, and returning the system call sequence to a server; performing feature encoding on the system call sequence through a second encoderto obtain a corresponding second feature vector set, the second encoder being constructed according to encoding parameters of a first encoder in a self-encoding and decoding module transmitted by theserver; and comparing the second feature vector in the feature space through a regression equation, and determining whether the system call sequence is a normal system call according to a comparisonresult, the regression equation being obtained and transmitted by performing regression equation operation on the first feature vector set by the server. By implementing the technical scheme of the invention, the detection effectiveness of unseen malicious software can be effectively improved, the operation resources can be effectively distributed, and the hardware cost is reduced.
Owner:网御安全技术(深圳)有限公司

Method for screening SNP (Single Nucleotide Polymorphism) sites and application thereof

The invention discloses a method for screening SNP loci and application thereof, and relates to the technical field of genetic engineering.The method comprises the steps that according to mutation frequency information of SNP candidate loci in N sample genomes, loci meeting the screening standard serve as multipurpose SNP loci, the multipurpose SNP loci meeting the screening standard are judged, and the mutation frequency information of the SNP candidate loci in the N sample genomes is obtained; the distance between the adjacent multipurpose SNP loci on a single chromosome is more than 250 kb to 350 kb. According to the method, a batch of heterozygosity site sets which are uniformly distributed in a genome and are stable in performance can be rapidly screened out, and the sets have various wide applications, such as detection of sample pollution level, detection of gene heterozygosity deficiency and tumor genome ploidy detection, and have the advantages of being lower in detection cost, high in sensitivity and the like. The detection time is short; the detection effectiveness is higher, and the like.
Owner:BERRY ONCOLOGY CO LTD +1

Distributor and grain imperfect grain scanning detection system with same

The invention relates to the technical field of grain detection, particular to a distributor and a grain imperfect grain scanning detection system with the same. The grain imperfect grain scanning detection system comprises a supporting table, a discharging hopper, a belt type conveying device, a scanner, an image display terminal and a distributor, wherein the belt type conveying device is arranged on one side of the supporting table, a plurality of material running grooves stretching across the conveying face of the belt type conveying device are formed in the conveying face of the belt typeconveying device in the conveying direction, and correspond to material distributing grooves one to one, the discharging hopper is installed above the supporting table, one end of the distributor isconnected with the discharging port of the discharging hopper, the other end of the distributor is arranged at the feeding end of the conveying face of the belt type conveying device, the material distributing grooves of the distributor are in butt joint communication with the material running grooves in a one-to-one correspondence mode, a machine vision system is provided with the scanner, and the scanner is arranged above the conveying face of the belt type conveying device. According to the invention, the structure design is reasonable, efficient and continuous grain detection can be achieved, grain sorting is good, and detection effectiveness is good.
Owner:迩言(上海)科技有限公司

A Bot Detection and Classification Method Based on the Combination of Dynamic and Static Features

The invention discloses a bot detection and classification method combining dynamic and static features, which detects bots based on static feature information; the feature selection in the detection process adopts the improved TF-IDF algorithm, and the improved TF-IDF algorithm It is to add the category discrimination factor GF when the TF-IDF algorithm calculates the TF-IDF weight, which is used to represent the ratio of the occurrence degree of a feature item in a certain category to the occurrence level in all other categories; run the detection bot, extract The API sequence and network traffic information of the bot running are processed to obtain the bot family classification features; based on the bot family classification features, the bots are classified. The invention can automatically classify, reduce time consumption and improve classification efficiency.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Rejecting device capable of automatically detecting defective products in capsule production process and detection method

The invention relates to the technical field of pharmaceutical equipment, and discloses a rejecting device capable of automatically detecting defective products in the capsule production process. The rejecting device comprises a detection table, the interior of the detection table is rotatably connected with a conveying belt, the side face, close to the conveying belt, of the detection table is fixedly connected with a rack, the lower end of the rack is fixedly connected with an air conveying pipe, a supporting plate is fixedly connected to the interior of the air conveying pipe, a rotating disc is rotationally connected to the upper end of the supporting plate, and fan blades are fixedly connected to the circle center of the rotating disc. Baffle plates are opened, so that internal air can be discharged out of the device through air outlet holes, and the air outlet holes can be quickly blocked after the air is completely discharged, so that the internal device pollution caused by external air backflow due to internal pressure reduction is avoided, the external air can be prevented from flowing back to the interior of the detection device, the precision of internal components of the detection device is improved, and the detection effectiveness is improved.
Owner:张伟民

Abnormal fall behavior detection method based on spatio-temporal motion characteristics

ActiveCN110321780BStrong real-timeAvoiding difficulties such as synchronicityCharacter and pattern recognitionPattern recognitionHuman body
The invention relates to a method for detecting abnormal fall behavior based on time-space motion characteristics. Based on image information, the five-point inverted pendulum model that reflects the posture of the human body is refined, and then the standard space-time model of motion that reflects the dual characteristics of time and space is constructed; then based on the standard space-time diagram, the essential characteristics of motion are studied by applying the principle of dynamics. Construct a fixed-axis motion model, realize feature quantification with rotational energy, construct a feature-encoded data set of falling behavior, normal walking or standing state, and conduct training to form a second-class classifier, which is used to classify the processed real-time collected video data Identify and judge whether it is an abnormal falling behavior. The invention adopts a single-view scene, and the algorithm has stronger real-time performance, which avoids the synchronization of multi-view scenes in scene fusion and other problems; it uses rotation energy as a feature, avoids the limitation of morphological features on forward falling posture, and improves The detection is effective, and it has good universality for typical fall postures.
Owner:SUZHOU UNIV

Method and device for detecting scanning attack

After some embodiments, the present invention discloses a method and a device for detecting scan attacks. The present invention parses the received message information and records the information of the destination port or the IP address in the message information; then the times, for which the destination port or the IP address are recorded in a scheduled time, are counted; and finally when the recorded times of the destination port or the IP address reach a predetermined threshold, then the present invention judges that a scan attack occurs. The device of the present invention comprises a first unit, which parses the received message information and records the destination port or the IP address, a second unit, which is used to count the times for which the destination port or the IP address are recorded in a scheduled time, and a third unit, which is used to judge that a scan attack occurs when the recorded times of the destination port or the IP address reach a predetermined threshold. In every technical scheme of embodiment, the present invention effectively detects scan attacks according to the times of the port or protocol attack in a scheduled time, thus reducing the falsealarm rate and the realization difficulty of scan detection.
Owner:NEW H3C TECH CO LTD

Method for detecting refrigerant leakage and air conditioner

The invention provides a method for detecting refrigerant leakage and an air conditioner. The method for detecting refrigerant leakage includes the following steps: S1: the air conditioner is running, and it is determined whether the refrigerant is appropriate; if yes, execute step S2; if not, execute Step S4; S2: Determine whether the preset detection trigger condition is met; if yes, execute step S3; if not, execute step S1; S3: perform refrigerant leakage verification judgment, and determine whether the verification judgment condition is satisfied; if yes, refrigerant leakage; If not, re-execute step S3; S4: judge whether the high-pressure side leakage judgment condition is met; if yes, the high-pressure side leaks; if not, execute step S5; S5: judge whether the low-pressure side leakage judgment condition is met; No, re-execute step S1; the refrigerant leakage detection method of the present invention can improve the effectiveness of refrigerant detection and enhance the safety of the entire air-conditioning system; the method can achieve comprehensive benefits of accurate judgment, energy saving and safety.
Owner:AUX AIR CONDITIONING LTD BY SHARE LTD

A method and device for intelligent identification and early warning of cluster fog

The invention discloses a method and device for intelligent identification and early warning of group fog. The steps of the method include: first extracting a moving target in a video image, then identifying the characteristics of the moving target to determine whether it is a group fog, and finally releasing the group fog Early warning information: the device includes a main control module, a heavy fog intelligent detection module, a group fog intelligent identification and analysis module and an early warning signal release module connected to it. Compared with the prior art, the present invention adopts a highly integrated integrated design, combines optical detection and video detection, solves the problem of single fog detection technology, and has the advantages of high detection effectiveness and high precision.
Owner:ANHUI TI SAFT INFORMATION TECH

A method for laying electromagnetic exploration coil support

The invention discloses an electromagnetic surveying coil support and a laying method thereof. The electromagnetic surveying coil support comprises an annual support air bag equipped with an inflation valve. The inflation valve is connected with an air pump regulator via an air conducting flexible pipe. Coil suspension loops are uniformly distributed on the inner ring of the support air bag. A concave groove is disposed on the surface of the outer ring of the support air bag. A coil winding track is printed on the bottom of the concave groove. The support air bag is inflated in order to form the fixed coil support. The electromagnetic surveying coil support is convenient to carry, easy to lay, flexible to use. The air bag is made of butyl rubber, resistant to wear and corrosion, and elastic, and may satisfy measurement requirements in special environment. Having no metallic component, the electromagnetic surveying coil support can be prevented from influencing detection signal so that detection validity is increased.
Owner:CHANGAN UNIV

Anti-natural light interference smart gas meter and gas sampling detection method

The invention provides a natural light interference resistant intelligent gas meter. One surface of a sampling plate provided with components and parts is toward to a sampling character wheel, and adistance between a photoelectric detector on the sampling plate and the circumference of a sampling character wheel is not more than 1mm; the sampling character wheel is provided with numbers and a reflecting surface, the numbers comprise reference numbers and general numbers, and the reference numbers are arranged above and below the reflecting surface; the heights of the reference numbers are slightly lower than that of the general numbers. The invention further provides a gas sampling and detecting method, which comprises a light protecting and detecting step, a sampling step and a standby step. According to the gas meter provided by the invention, and the distance between the sampling plate and the sampling character wheel can be controlled and the proper color of the sampling character wheel can be selected, so that the incident dose of outside light rays can be reduced, the emission current of an optoelectronic switch tube can be reduced, and the reliability of the intelligent gas meter can be improved; furthermore, according to the gas detecting method provided by the invention, the effectiveness of the detection can be ensured by the light protecting and detecting step, and the low energy consumption of the operation can be realized by the standby step.
Owner:彭红军

A communication networking system for underwater wireless sensors based on optical communication

The invention discloses an underwater wireless sensor communication networking system based on optical communication, which includes a surface communication platform and an underwater node. The underwater node includes a sensor group, an optical communication component, and a self-power supply module, and the underwater node collects data. Information and communication are transmitted to the surface communication platform. The networking system also includes an underwater vehicle. The vehicle is also equipped with optical communication components and sensor groups. The data transmission between the vehicle and the underwater node greatly expands Compared with the traditional optical communication networking method of this application, it is more flexible and free from the shackles of cables, and has a lower bit error rate and a higher rate, thereby providing more intuitive, accurate and rich underwater information. Larger bandwidth is also conducive to the development of big data transmission. It can also regularly clean the optical communication probe and detection probe, so as to prevent algae or microorganisms from covering the optical communication probe and detection probe, improve detection effectiveness and ensure normal communication.
Owner:南昌理工学院

Exterior wall insulation board impact resistance detection equipment

The invention discloses an external wall insulation board impact resistance detection equipment, and relates to the technical field of impact resistance detection. The technical scheme is characterized in that the external wall insulation board impact resistance detection equipment comprises an equipment body and a material receiving box body fixed at the bottom of the equipment body, the equipment body is internally provided with a detection cavity, the bottom of the detection cavity is provided with a blanking notch used for communicating with a material receiving box body, and the detection cavity is internally provided with a clamping and fixing mechanism of which the two ends are rotatably connected with the equipment body and a hinge part which is fixedly connected with the top of the equipment body; the hinge part is in hinged connection with an impact detection part which is in contact with an external wall insulation board to carry out impact resistance detection; a clamping and fixing part is used for fixing the external wall insulation board and enabling an included angle formed when an impact detection part is in contact with the external wall insulation board to be larger than 0 degree and smaller than 180 degrees. According to the invention, the precision of the contact position of the external wall insulation board and an impact ball is improved, so that the detection equipment has the effect of improving the detection effectiveness.
Owner:宁波渝杰建设工程检测有限公司
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