60results about How to "Real-time monitoring of security status" patented technology

The invention relates to a fence perimeter security protection system-based integrated wiring method and an intrusion early warning method. A fence perimeter security protection system includes an optical fiber alarm subsystem and an upper platform subsystem; the optical fiber alarm subsystem is in connection communication with a remote client through the Internet; the optical fiber alarm subsystem is connected with one detection optical cable; the detection optical cable can be laid on the perimeter of a fence in a surface-laid manner, a wall-embedded manner and a ground-buried manner; the detection optical cable laid through the above three manners is the same detection optical cable; and different portions of the detection optical cable adopt different laying manners. The detection optical cable adopted in the method of the invention can sense the intrusion behaviors of people coming from the outside of the perimeter of the fence in real time; when an intrusion event causes local disturbance, once the detection optical cable receives disturbance signals, the alarm system is notified after the intrusion event is determined as a real intrusion event through comprehensive judgment, and therefore, a misjudgment rate can be decreased, and the sensitivity and accuracy of early warning can be improved.

The invention discloses a method for testing a deflection / longitudinal displacement change of a bridge based on a four-quadrant position detector. The method is characterized by comprising the following steps: firstly, the four-quadrant position detector is installed in the centre of the bridge or other points to be tested at the bottom of a bridge deck; a laser source is installed on a pier and / or a certain point below the bridge deck through an electric displacement table; then, testing is carried out by matching the four-quadrant detector with the laser source, so that the light spot of laser is over against the centre of the detector; when the deflection of the bridge deck changes, the four-quadrant detector longitudinally moves together with the point to be tested; the light spot position, formed on the four-quadrant detector, of the laser moves oppositely relative to the detector; and different position coordinates of the light spot on the detector before and after the deflection of the bridge changes and light spot position variable quantity on the four-quadrant detector, namely deflection position variable quantity of the point to be tested on the bridge deck can be calculated. The method disclosed by the invention has the advantages of simple structure, good controllability and high precision and is capable of realizing real-time online test of the deflection / longitudinal displacement of the bridge.

The invention provides a method for measuring the safety factor of a tailings pond and a measuring device, which relate to the technical field of tailings monitoring and include the following steps: measuring and obtaining surface characteristic data of a tailings pond and establishing a three-dimensional model according to the surface characteristic data; The three-dimensional model is divided into multiple areas; the position information of multiple infiltration points is measured and obtained, and the position data of multiple infiltration points are used to fit to form the distribution function of the infiltration line; by solving the infiltration line function and the dynamic intersection of each area, Calculate the dynamic safety factor of the tailings pond. The invention can evaluate whether the tailings pond is safe from multiple angles, and multiple data are transmitted into the computer for calculation in real time, which also makes the judgment process more timely. The invention also provides a tailings pond measuring device, which is used for real-time monitoring of the safety state of the tailings pond, and alleviates the existing technologies that cannot conduct real-time and effective analysis of the safety of the tailings pond and the deviation of the measurement results is large. question.

The invention discloses a cloud-network-end collaborative defense method and system based on end-side edge computing, and relates to information security of an electric power industrial control system. The method includes: setting up an edge computing center on the terminal side, collecting terminal equipment information and communication flow information of the industrial control system, using device fingerprints to define and identify attribute characteristics of power industrial control terminals, using Nmap scanning method to automatically collect fingerprints of power industrial control terminal equipment, and making decisions The tree algorithm establishes the training model to realize the dynamic authentication of terminal device fingerprints; through the setting of switch mirroring, intelligent monitoring of host flow control, and cloud computing center training flow baseline, the abnormal detection of industrial control terminal device flow is realized, and the "cloud" collaborative defense technology based on edge computing is realized . Through traffic data collection, information entropy quantification, preprocessing of traffic characteristic attributes, and improved semi-supervised clustering K-means algorithm training, the abnormal traffic detection of the power industrial control intranet is realized, and the "cloud network" real-time defense based on abnormal traffic detection is realized.