36results about How to "Reduce the number of probes" patented technology

The invention discloses a roadway drivage drilling induced polarization advance water probing forecasting method, device and probe. The probe is placed in a drill hole; a power supply negative electrode B is mounted in a roadway outside the drill hole and is connected with an on-site main machine by a power supply cable; a power supply positive electrode A, a measuring electrode M and a measuring electrode N of the probe are mounted inside the drill hole, and are connected with the on-site main machine by the power supply cable and a signal cable; the power supply positive electrode A and the power supply negative electrode B outside the drill hole form the power supply cable; the on-site main machine measures an electric field change signal by the measuring electrode M and the measuring electrode N of the probe; and the electric field change signal is input to the main machine to calculate and detect the apparent resistivity and apparent chargeability of a target; the probe is propelled to repeat the steps at each measuring point to measure the apparent resistivity and apparent chargeability of each point and generate a resistivity profile map and a chargeability profile map; and the rate of change of the apparent resistivity and apparent chargeability is calculated to determine an inner geological structure taking a drilling axis as a central cylindrical space.

The invention provides a high-performance OpenFlow virtual flow table searching method. Aiming at the problem of high flow table searching overhead in an OpenFlow virtual switch, a flow table item caching mechanism is firstly designed, so that most of data packets directly hit a cache to find corresponding flow table items, and a mask detection process and a flow table searching process corresponding to mask detection are bypassed; secondly, an SMA1 mask heuristic strategy is designed, and the successfully detected active masks forward are moved by one position each time, so that all the active masks are adjusted to the front positions of the mask arrays after a series of accesses, thereby reducing the average mask detection times of the data packets. In addition, an extensible counting type SCBF filter is adopted to quickly judge a flow table searching failure result, meanwhile, it is guaranteed that the false positive error rate is always kept at a low level, and therefore the flowtable searching traversal process when mask detection fails is avoided. According to the method, the average flow table searching overhead of the data packets can be remarkably reduced, the packet classification speed is greatly increased, and the packet switching performance of the OpenFlow virtual switch is effectively improved.

The invention provides an omnidirectional slot wave seismic detection method in a coal mine excavation process. The method comprises the steps of hardware connection and system arrangement, data acquisition, seismic data preprocessing, data processing analysis and offset imaging and comprehensive geological interpretation. Compared with the prior art, the method provided by the invention has the advantages that the omnidirectional slot wave detection method can timely predict left and right working faces, and the coal seam occurrence, geological structure, stress pressure and the like in front of a heading face, and provides geological parameters and recommendations for excavation and recovery; coal mine geological hazards can be effectively controlled; casualties caused by geological causes are reduced; the coal mine safety is protected; through the method, the detection distance of left and right side walls of a roadway is up to 100 to 300 meters each time, and the front of the heading face is up to 100 meters; a large number of detection times can be saved in the excavation process; and the detection efficiency can be improved.

The invention discloses a dam seepage electric field three-dimensional scanning automatic detection device, which is characterized in that a multi-frequency electric field signal transmitter of the device is placed on a dam, an electric field negative electrode is arranged in a water body, which is 200m-1000m away from a suspicious seepage point, at the upstream of the dam, an electric field positive electrode is arranged in a water body at the downstream of the dam, the electric field negative electrode is connected to a negative electrode wiring terminal of the electric field signal transmitter, the electric field positive electrode is connected to a positive electrode wiring terminal of the electric field signal transmitter, and the electric field positive electrode, the multi-frequency electric field signal transmitter, the electric field negative electrode and the suspicious seepage point form a power supply electric field loop; and a field receiving system is used for performing detection on the power supply electric field loop and can determine an electric field gathering area, so that the location of the dam seepage point is tracked. The dam seepage electric field three-dimensional scanning automatic detection device and method can perform automatic tracking and quick searching on the dam seepage point.

The invention relates to an ultrasonic flaw detection method of a train wheel, and in particular relates to a liquid guide ultrasonic probe array flaw detection test method of a train wheel. The method comprises the following steps of: sequentially distributing a plurality of probes under a rail surface at intervals, and realizing the direct coupling of an ultrasonic wave with a wheel set tread through wave carrying liquid by liquid guide ultrasound; and forming a fan-shaped scanning region by each probe due to a position relationship between each probe after the region above the probe is ground by the wheel and the wheel, and synthesizing all the fan-shaped scanning regions together to form a scanning detecting region containing the whole wheel, wherein the ultrasonic wave is conducted to the wheel from the probes through a liquid medium to complete the scanning type ultrasonic flaw detection of the whole wheel in a manner of non-direct contact. The ultrasonic flaw detection method has the advantages of being extreme in coupling performance, and stable and reliable; the method is high in detecting performance, wherein the detecting density is 10-20 times as thick as that of the current array type equipment, and the quantity of the probes is 1/5-1/10 that of the current array type equipment; and the method is free from mechanical contact and mechanical motion parts, so that the equipment can be convenient to install and maintain.

The invention discloses an ultra-deep foundation pit enclosure structure plane leakage detection method and aims at the defects of an existing leakage detection method. According to the method, a leakage condition of a complex underground structure can be detected by high-sensitivity measurement of weak ion movement at a leakage position through an electro-osmosis principle. Under the leakage condition, even a slight leakage exists, the change of the electric field of the whole stratum can be generated due to the movement of ions, and for the change, the position with the abnormal electric field can be mastered through a developed multi-channel multi-sensor high-precision measuring system, so that a leakage point can be detected. Particularly, the detection work efficiency of a plurality of sensors can be achieved by arranging the single sensor, and a travel path is planned for the sensors, so that the leakage condition of an enclosure structure at each point position can be detected.The arrangement of the sensors is not needed, on one hand, the working pressure of constructors is reduced, time and labor are saved, and the working efficiency is indirectly improved; and on the other hand, the sensors do not need to be purchased, and the cost is reduced.

The invention belongs to the technical field of network topology discovery and particularly relates to a method for recognizing and processing alias routers in topology discovery. The method comprises the steps that IP address sets are divided into the three classes of an alias relation, a potential alias relation and an undetermined set according to DNS and IP address information, wherein firstly, the definite alias relation is separated according to analysis on DNS information; secondly, in the process of processing the IP address set with the alias relation undetermined, IP addresses in a potential alias relation set are subjected to alias analysis in priority, if two IP addresses are in the alias relation, the two IP addresses are classified in the same address set, and any one of the two IP addresses serves as a set representative; if not, the two IP addresses are added into a non-alias relation address set. By carrying out alias analysis on the potential alias relation address set in priority, the IP address set in the alias relation can be found in a large probability relative to random detection, and the detection scale in the subsequent processing process can be reduced.

The invention discloses a method and device for improving power optical fiber state monitoring precision and a storage medium, and the method comprises the steps: dividing a preset frequency scanning range, and obtaining a plurality of scanning frequencies; controlling a light source in the monitoring device to output a light beam according to any one of a plurality of scanning frequencies, and monitoring the state of the power optical fiber; controlling the monitoring device to carry out measurement for preset times to obtain a plurality of measurement values; changing the frequency of the light beam output by the light source according to the plurality of scanning frequencies, and measuring the prediction times again until the measurement results under the plurality of scanning frequencies are obtained; and processing the measurement results under the plurality of scanning frequencies to obtain multi-parameter monitoring data of the power optical fiber. According to the invention, the measurement precision can be effectively improved. Therefore, the method for improving the monitoring precision of the power optical fiber state can be used for monitoring the state of the long-distance power optical fiber, and the problem that the monitoring precision of the long-distance power optical fiber is insufficient is solved.

The invention relates to a streaming data security vulnerability tracing method and system in a video conference scene. The method comprises the following steps: video conference stream data acquisition: by an analyzer, simulating an attacker to monitor a video conference by using a traffic analysis tool; video conference stream data feature extraction: extracting feature vectors of the video conference stream data according to a feature value extraction scheme; characteristic vector grouping analysis: grouping the characteristic vectors according to a certain rule to ensure that the characteristic vectors are mapped to certain data characteristics in the group; and mapping vulnerabilities and tracing back: positioning key features, and tracing back a problem corresponding to the feature group with the highest privacy exposure. According to the method, traceability of security holes can be realized, and the data security performance of video conferences is improved.

The invention provides a chip testing probe and a chip testing device, and belongs to the technical field of chip testing. The chip test probe comprises a test probe body used for detecting an electric signal on a to-be-tested chip when a test end portion of the test probe body is in contact with the to-be-tested chip; the light guide part is made of high-purity silicon dioxide and used for conducting light signals, the light guide part is arranged on the peripheral side surface of the test probe body or in the test probe body, one end of the light guide part is used for being arranged opposite to the chip to be tested, and the other end of the light guide part is used for being connected with an infrared temperature measuring device. And the infrared temperature measuring device calculates the temperature of the chip to be measured according to the received optical signal which is emitted by the chip to be measured and is conducted through the light guide part. According to the chip test probe and the chip test device, the measurement accuracy of the chip temperature can be improved.

The invention discloses a method for quickly detecting and replacing edge fragments of an image slice. The method comprises the following steps: S1, requesting image slice data of a plurality of grids in a screen range; S2, sorting the mSultiple stages of image slices in each grid according to a time sequence; S3, for each grid, taking a slice at the latest time, and judging whether the slice in each grid is a fragment; S4, if the slice in a certain grid is judged to be a complete slice, returning to the slice to fill the corresponding grid; and S5, if the slice in a certain grid is judged to be a fragment, marking and removing the slice, and repeating the step S3 on the next slice at the latest time in the same grid until the complete slice is returned. According to the method, which stage of image slice data is used in a certain grid is quickly determined with extremely low operation cost, fragment replacement is achieved, meanwhile, the operation burden of a server can be relieved, and the response speed is increased.

The invention provides a maternal fetal monitoring device and a detection probe thereof. The detection probe comprises a probe shell with a mounting space, and a uterine contraction pressure sensor, afront-end signal acquisition circuit and a main control circuit which are arranged in the mounting space, wherein the uterine contraction pressure sensor is electrically connected with the front-endsignal acquisition circuit and used for acquiring uterine contraction pressure signals, and the front-end signal acquisition circuit is electrically connected with the main control circuit; and an electrocardio-electrode is arranged outside the probe shell, is electrically connected to the front-end signal acquisition circuit inside the mounting space through a lead wire and is used for acquiringa maternal fetal electrocardiosignal. By means of the design, the main control circuit analyzes the collected signals and calculates the maternal heart rate, the fetal heart rate and the uterine contraction pressure value, so that monitoring of the maternal heart rate, the fetal heart rate and the uterine contraction pressure can be completed only through one detection probe, the burden of pregnant women during monitoring is relieved, and electrode plates cannot fall off or slide due to the pasting mode; and therefore, movement of the pregnant woman is not limited any more, and the monitoringexperience is greatly improved.