51results about How to "Judging safety" patented technology

The invention relates to a nuclear power sliding bearing oil feeding system based on comprehensive measurement of flow, pressure and temperature. The nuclear power sliding bearing oil feeding system based on the comprehensive measurement of the flow, the pressure and the temperature is used for feeding lubricating oil for a sliding bearing of a nuclear power high temperature gas cooled reactor helium compressor and mainly comprises an oil feeding pipeline, a filtering and cooling pipeline and a sliding bearing lubricating pipeline. The nuclear power sliding bearing oil feeding system based on the comprehensive measurement of the flow, the pressure and the temperature utilizes the comprehensive measurement of the flow, the pressure and the temperature of lubricating oil and utilizes a computer to monitor the pressure and the flow to enable the lubricating oil feeding amount and temperature to meet a working requirement to guarantee the common work of every sliding bearing. The nuclear power sliding bearing oil feeding system based on the comprehensive measurement of the flow, the pressure and the temperature has the advantages of obtaining maximal amount of information by utilizing sensors as less as possible, meeting high reliable requirement of nuclear power system through redundancy configuration, being high in control accuracy, reliable in device operation, safe, simple in system and the like.

The invention provides a method for extracting telephone numbers according to yellow page information and a cloud server. The method comprises the following steps that at least one model / rule for acquiring the yellow page information is established according to preset training numbers; the telephone numbers sent by a plurality of client sides are received, and the yellow page information of the telephone numbers is extracted from related web pages of the telephone numbers according to the model / rule; a yellow page database is generated according to the telephone numbers and the yellow page information corresponding to the telephone numbers, wherein the training numbers are pre-acquired numbers with yellow page information, and the telephone numbers include the training numbers. By means of the method, when dialing / receiving an unfamiliar number, a user can know the yellow page information of the number in time, the safety of the number is judged, and proper processing is conducted.

The invention discloses a monitoring method for bridge deformation in shield construction. According to the method, in the shield construction process, bridge deformation monitoring data is obtained by monitoring a railway viaduct, then the data is transmitted and logged for obtaining a database, monitoring analysis is performed according to data in the database, and finally determination is performed. The invention also discloses a system employed by the above method. The system comprises a fixed facility system and an automatic monitoring system; the fixed facility system is used for providing equipment for the automatic monitoring system for monitoring; and the automatic monitoring system is used to performing monitoring by using the fixed facility system for obtaining the bridge deformation monitoring data. The method is capable of realizing continuous dynamic precise monitoring on bridge settlement and displacement statuses when a shield machine passes underneath the railway viaduct, provides control index of the railway viaduct, and is capable of quantitatively evaluating the safety of the railway viaduct.

The invention discloses a nondestructive testing method for the rusting degree of a steel bar of a reinforced concrete member after rusting cracking. The method comprises the following steps: on the basis of mechanics of materials and theoretical mechanics, obtaining a formula (4-49), and measuring the crack width of the reinforced concrete member; if a stirrup is located at a corner part of the reinforced concrete member, calculating the mass of a rusting product according to the formula (4-51) or (4-53) or (4-49); if the stirrup is located in the middle of the reinforced concrete member, calculating according to the formula (4-52) or (4-54) or (4-49); calculating the masses of rusting products at different age periods and different crack widths; and calculating the rusting degree of the steel bar according to the masses of the rusting products, and judging the safety performance of the reinforced concrete member. The formula for nondestructive testing of the rusting degree of the steel bar is deduced on the basis of the mechanics of the materials and the theoretical mechanics. A half-experience and half-theory model disclosed by the invention is based on the theory, and is relatively wide in application range.

The present invention provides a method for calculating the displacement of an existing shield tunnel caused by ground loading. According to the method provided by the present invention, a mechanical calculation model for ground loading is established, and the ''joint effect'' between the tunnel rings is taken into account in the patent; the tunnel is equivalent to the elastic foundation short beam connected by shear springs, and the structural and physical properties of the tunnel are fully taken into account; and vertical displacement (including vertical displacement and horizontal displacement) of the shield tunnel due to ground loading, the amount of dislocation (including the amount horizontal dislocation and the amount of vertical dislocation) between the shield tunnel rings, and shear forces (including the horizontal shear force and the vertical shear force) can be quickly calculated by using the Matlab, so that safety of the tunnel structure under the ground loading can be determined, and the method is more consistent with the actual force and deformation of the shield tunnel.

The invention relates to a method for calculating existing shield tunnel displacements caused by new under-crossing tunnels. The method comprises the following steps of: 1, calculating existing tunneladditional stresses caused by a new under-crossing tunnel: a vertical additional stress <sigma>z-q generated by cutter head additional thrust q, a vertical additional stress <sigma>z-f generated by shield shell friction force f, vertical additional stresses <sigma>z-p1 and <sigma>z-p2 generated by slip casting additional pressure p and an additional stress generated by soil mass loss; and 2, calculating longitudinal deformation of the tunnel on the basis of a principle of minimum potential energy: total potential energy of a shield tunnel, a displacement function of an assumed tunnel lining ring and a variation control equation. The method has the beneficial effects that joint effect among tunnel rings is considered, structural characteristics and physical characteristics of tunnels are sufficiently considered, and longitudinal displacements, caused by new under-crossing tunnels, of existing shield tunnels can be rapidly calculated by utilizing Matlab, so that safety of existing tunnel structures under the action of the new under-crossing tunnels can be judged and relatively accord with practical stress and deformation of the shield tunnels.

The invention relates to a shield tunnel deformation calculation method considering duct piece staggering and rotation at the same time under ground loading. The method comprises the following steps of: establishing a calculation model; calculating a deformation mode of rigid body rotation and duct piece staggering; calculating tunnel additional stress caused by ground loading; calculating total potential energy of a shield tunnel; calculating a displacement function of a shield lining ring; and obtaining a variable control equation. The method has the beneficial effects that a shield tunnel deformation mode which comprehensively considers rigid body rotation and duct piece staggering effects is established; the lining ring is taken as an elastic foundation short beam for connection between a shear spring and a tensile spring; structural characteristics and physical characteristics of the tunnel are sufficiently considered; and longitudinal displacement (such as vertical displacement and horizontal displacement), caused by ground loading, of the tunnel and staggering amounts and inter-ring shearing force between shield tunnel rings can be rapidly calculated by utilizing Matlab, sothat the safety of the tunnel structure under the ground loading can be judged and accords with practical stress and deformation of the shield tunnel.

A Pt‑SnO 2 The invention relates to a preparation method of an oxide semiconductor carbon monoxide sensor and its application in detecting the concentration of carbon monoxide in mines and atmospheric environments, belonging to the technical field of gas sensors. The sensor is made of commercially available Al with 2 ring-shaped gold electrodes on its outer surface. 2 o 3 Insulating ceramic tube, coated with ring-shaped gold electrodes and Al 2 o 3 Pt‑SnO on the outer surface of an insulating ceramic tube 2 Oxide semiconductor sensitive material, through Al 2 o 3 It consists of a nickel-cadmium alloy heating coil inside an insulated ceramic tube. The sensor has good linearity to low concentration of carbon monoxide (lower detection limit 10ppm), these characteristics make Pt‑SnO 2 The oxide semiconductor carbon monoxide sensor can be well applied to the detection of carbon monoxide in the atmospheric environment and mines, and can further judge mine safety and environmental safety by detecting the concentration of carbon monoxide.

The invention discloses a privacy leakage protection method based on data traceability. A smart home platform is taken as an example. The method comprises log fusion generated by operation of intelligent household appliances (such as an intelligent sound box, an automatic curtain and an intelligent electric lamp) and control instruction detection of a cloud center. The method is characterized by comprising: performing static stain analysis on the control instruction of the cloud center; searching a data leakage condition (such as a password manually input by a user) possibly generated at a code level; secondly, searching a corresponding logic relationship for all events occurring in a user room at a code level by using a data traceability technology; integrating the scattered intelligent household appliance logs according to the causal relationship of the event; obtaining a complete centralized log system (a causal chain set of event occurrence) under the platform, then using the log system for judging behaviors already occurring in a user room, determining whether the behaviors are normal behaviors or not, and therefore a user can be informed of the abnormal behaviors, and the user is assisted in effectively protecting the privacy safety of the user.

The invention discloses a rock landslip waterpower starting indoor simulation test method, which belongs to the field of geology calamity forecast technology. The method includes the following steps: a rock test piece containing a real potential slip surface is fetched; the potential slip surface is regarded as the boundary; upper and lower rocks are respectively filled into a sample frame and a sample box, and a cement and a mortar are filled into the sample frame and the sample box; component forces of the gravity parallel to the slip surface and vertical to the slip surface of a simulationlandslip leading edge part to be simulated are regarded as the transverse load initial value and the vertical load initial value; the water pressure of underground water in a slope to a potential slip body in reality is replaced by maintenance of the transverse load and reduction of vertical load value on the potential slip surface; when the displacement rates of the upper sample frame of the rock test piece and an upper rock of the potential slip surface solidified in the frame relative to the potential slip surface are suddenly increased and continuously increased, the landslip is already started, meanwhile the accumulation minimizing amount of vertical load value is equal to the water head height value, that is the starting water head value of the simulation rock landslip. The method can relatively accurately discover the impending landslip state of rock slope.

The invention relates to a horizontal deformation recording device for an isolation bearing. The horizontal deformation recording device comprises an upper support, a lower support, a probe, a recording plate and a digital converter. The top end of the upper support is fixedly connected with an upper end plate or an upper buttress of the isolation bearing and does not horizontally shift relative to the upper end plate or the upper buttress, the lower end of the upper support is connected with the probe and used for driving the probe to move, the bottom end of the probe contacts with the recording plate to form a data acquisition pair, the recording plate is used for recording horizontal movement of the probe relative to the recording plate and further connected to the digital converter, the digital converter is used for converting analog signals transmitted by the recording plate into digital signals, the recording plate is fixed onto the lower support, and the lower support is fixed to a lower end plate or a lower buttress of the isolation bearing and does not horizontally shift relative to the lower end plate or the lower buttress. The horizontal deformation recording device for the isolation bearing can record horizontal deformation of the isolation bearing in real time, and the working performance of the isolation bearing and safety of a building structure are conveniently judged by engineers.

The invention discloses a method for quickly evaluating expansion of an aluminum-housing high-nickel ternary battery. The method is characterized by taking a sealed aluminum-housing high-nickel ternary battery, charging the battery to 4.2 V under constant current and constant voltage, and measuring and recording initial thickness d0 of the battery; and carrying out floating charge on the battery for n days under constant voltage, n=1-100, and measuring and recording the thickness d1 of the battery, battery expansion coefficient being eta=(d1-d0) / d0. The method simulates expansion thicknesses of the battery in different service life through a floating charge mode, is high in test precision, short in period and safe and reliable in detection process, and has a great guidance meaning for battery thickness exploration in normal use process.

The invention discloses a water quality safety monitoring and early warning system based on big data. The system comprises a water supply station distribution system, a water quality monitoring and early warning system and a pipeline replacement information uploading system; the water supply station distribution system is used for judging distribution conditions of water supply stations according to geographic positions; according to the water quality monitoring and early warning system, the water quality condition in a pipeline is monitored through arranged monitoring nodes, and whether the water quality contains abnormal conditions or not is judged; the pipeline replacement information uploading system detects the change condition of the water quality of the residual chlorine in the pipeline, analyzes whether the pipeline needs to be replaced after being scoured by the residual chlorine so as not to influence the quality of the water in the pipeline, and can reduce the monitoring power consumption, save energy and effectively monitor the water quality by adjusting and setting the monitoring nodes; the time of the monitoring node is calibrated, so that the data time for stopping measurement of the monitoring node is ensured to be synchronous, and the data is ensured to be real and effective.

The invention relates to a fault positioning system and method based on video image diagnosis data, and the system comprises a front-end equipment camera system which comprises a full-path camera and is configured to shoot video image information; a comprehensive video monitoring system which is configured to check the real-time video and the recorded video shot by the front-end equipment camera system; and a video operation and maintenance system which is configured to perform quality diagnosis on the video images acquired by the comprehensive video monitoring system to determine video monitoring fault types and position fault causes. The method can be used for centralized management and operation and maintenance of video service related equipment and systems, provides intelligent service of fault positioning analysis for users, assists operation and maintenance management personnel in judging the safety and stability of video operation, and provides powerful support for production operation and maintenance decision making.

The invention belongs to the technical field of data communication, and particularly relates to a data block association encryption algorithm based on timestamps. Hardware encoding and decoding devices are additionally arranged at a transmitting end and a receiving end of data, an address mapping technology is adopted to transform a transmitting data block, data and timestamp characteristics are hidden by adopting a mode of calculating CRC and timestamps, an encryption field is added to the data by adopting a secret key method, and then the data is transmitted. The data stream is decoded at areceiving end, and the safety of data communication is judged by utilizing the continuous characteristics of the timestamps. The method adopts replacement, CRC calculation, secret key calculation andtimestamp calculation adopted, calculation is simple, system resource consumption is low, the calculation method is very suitable for being achieved through a programmable device (FPGA), the calculation speed is high, the insertion delay is small, and the method is suitable for safe data transmission of a large-data-volume continuous real-time communication scene.

The invention discloses a building health state detection system and a detection method thereof, and the system comprises a self-driven detection device which comprises a self-driven detection shell, a first camera, a virtual positioning module, a telescopic sucker mechanism, a telescopic cutting mechanism, a telescopic arm body, a traction rope body and a gradienter; a wall body detection device which comprises a horizontal detection mechanism, a telescopic mechanism, vibration equipment and an abutting layer; a ground detection device which comprises a detection bin, a positioning robot, a knocking mechanism, recording equipment, a first laser transmitter and a first laser receiver; a control unit which is respectively connected with the driving detection device, the wall body detection device and the ground detection device and is used for judging the hollowing problem of the house tiles by knocking the division positioning points of the house tiles; the structure level problem of the self-built wall of the house is detected by knocking the self-built wall of the house, so that the potential safety hazard of ceramic tiles of the self-built wall is reduced.

The invention discloses a WiFi access position signal consensus system and method based on blockchain. The system comprises a smart phone terminal, a WiFi network security judgment module, a WiFi network access position positioning module, a WiFi network access request module, a data transmission speed detection module and a WiFi network signal sharing module; the smart phone terminal is used foraccessing a WIFI network; the WIFI network access request module is used for enabling a WIFI network to send a WIFI network access request to a smart phone terminal within a set range; the WiFi network access position positioning module is used for positioning a smart phone terminal attempting to access the WIFI network and judging the distance between the smart phone terminal and the router; theWiFi network security judgment module is used for enabling the smart phone terminal to judge the security of the WiFi network; the data transmission speed detection module is used for detecting the transmission speed of the current WiFi network, and the WiFi network signal sharing module is used for sharing different position signals.

The invention discloses an electromagnetic induction device and method for quantitatively characterizing the degree of corrosion of a steel bar in concrete. The device comprises a Hall effect sensor,an AC power supply, a voltage acquisition system, a signal transmission system and a data analysis system; the AC power supply is connected with a spiral coil, and a to-be-detected portion of the steel bar in the concrete is disposed in the spiral coil, so that a magnetic field can be generated around; the Hall effect sensor is attached to the surface of the to-be-detected portion of the steel barto convert the change of the magnetic field, caused by the corrosion of the steel bar, into the change of an electric field; the Hall effect sensor, the voltage acquisition system, the signal transmission system and the data analysis system are sequentially connected. The electromagnetic induction device and method can carry out long-term comprehensive monitoring on corrosion damage information of steel bars in different reinforced concrete members through the voltage change fed back by the Hall effect sensor, the monitoring is not affected by the manual operation and the environment, and theresult is true and reliable. The electromagnetic induction device and method provide an effective evaluation standard for structural safety of the different types of reinforced concrete members.

The invention provides a big health data management platform based on a block chain. The big health data management platform comprises a big health data management cloud server, a plurality of user sides, a management side and a safety detection server. According to the invention, the big health data management cloud server is used as the block chain node to be added into the block chain network,and the health data is broadcasted to the block chain network, so that the health data of the user can be prevented from being illegally tampered; by comparing the script set corresponding to the bighealth data management website with the user side access request response script set, whether the use environment of the user side is safe or not can be quickly and accurately known, so that leakage of basic information and health data of a user can be effectively avoided, and the privacy security of the user is guaranteed; the dynamic health detection data is segmented, sample paragraphs containing a large amount of interference noise are removed on the premise that more accurate information and stable health data are reserved, the workload of platform management personnel is greatly reduced,and the accuracy of data management and analysis is improved.

The invention discloses an outer cantilever frame for outer curtain wall construction and a mounting construction method thereof.The outer cantilever frame comprises a pair of double-width five-stage frames arranged indoors, an indoor scaffold is built between the pair of double-width five-stage frames through a plurality of cross braces and inclined braces, and double-width three-stage frames are connected to the lateral upper portions of the double-width five-stage frames correspondingly; the pair of double-width three-stage frames is connected through a plurality of cross braces to form an outward-hanging part, and the indoor scaffold and the outward-hanging part are connected with platform plates through supports at the same height. Each vertical rod of the pair of double-width five-stage frames is connected with a vertical rod, and the upper end of each vertical rod abuts against an indoor top plate through a jacking assembly. The overhanging frame is simple in structure, easy to assemble and good in stability and safety, the scaffold arranged indoors is fully utilized as a stable support, the overhanging part can directly stretch out of a room, and construction operation of an outer curtain wall by constructors is facilitated.

The invention discloses a calculation method of a variable cross-section water retaining dam load effect caused by an earthquake. The calculation method comprises the following steps: firstly, determining the beam depth h, the reservoir water height Z, the slope coefficient b and the checking point height L0 of a water retaining dam, wherein the linear change of the cross section area L of the water retaining dam along with the reservoir water height Z meets L=L0(1-b[Eta]), and [Eta] is equal to Z / L; then, according to the shape and the material characteristics of the water retaining dam, determining the mass M, the rigidity matrix K and the damping matrix C of a solid; and according to the shape and the compression characteristics of a water stream, determining the mass S, the damping matrix and the rigidity matrix H of fluid. In conclusion, the values of the displacement, the speed and the accelerated speed of the water retaining dam are calculated so as to judge the safety performance of the water retaining dam. The calculation method is high in calculation accuracy, numerical calculation damping generated by the calculation method is not in the presence, equation solving does not use numerical integration operation, a big step size can be taken without losing calculation accuracy, and calculation efficiency is improved.

The invention discloses a method for uploading website information and a browser client. The method comprises the following steps of acquiring a uniform resource locator corresponding to a page uploaded by a mark page in a browser of an IE (Internet Browser) inner core, wherein the browser of the IE inner core carries a set plug-in, and the set plug-in fills the browser of the IE inner core through an browser auxiliary target by a first application program independent from the browser; calling the set plug-in, and acquiring the website information matched with the uniform resource locator through the set plug-in, wherein the website information comprises at least one of safety evaluation information, authentication information and website type information of a website; uploading a set window in the browser of the IE inner core; uploading and displaying the website information in the set window. By the method, the safety of the website browsed through the browser by a user is guaranteed.

The invention provides a password authentication method and system, and particularly relates to a password authentication method and system capable of realizing any one of or a technology of multipleof ''allowing alteration of a login account, simultaneously submitting multiple passwords for authentication, authenticating a password which is not used within a period of time based on a certain probability, authenticating a password which is not used within a period of time when characters in an input password are matched with characters in a real password within an appointed range and recording and counting password authentication failure information''. The password authentication method and the password authentication system effectively prevent such a situation that an illegal user cracksan account password, so that the account security is improved, and the user experience cannot be reduced.

The present invention discloses an intelligent aggregate that is capable of sensing water content information inside a hydraulic building, and the intelligent aggregate comprises a graphene-modified hydrogel composite material, a pipe body, an electric bridge resistance collecting system, a signal transmission system, a computer monitoring and analyzing terminal, and a casing. The pipe body coversthe periphery of the graphene-modified hydrogel composite material, and restrains the expansion of the graphene-modified hydrogel composite material in the radial direction. The electric bridge resistance collecting system is connected to interior of the graphene-modified hydrogel composite material, and the signal transmission system is connected to the electric bridge resistance collecting system, and the signal transmission system is connected to the computer monitoring and analyzing terminal through a wireless signal. The intelligent aggregate adopts the integrated intelligent technology.Operating is simple, and the intelligent aggregate is buried in each individual part of hydraulic buildings. The water content information of the different hydraulic buildings as a whole can be comprehensively monitored in a long-term basis, in the same time, monitoring is not affected by manual operation and environmental impact, monitoring results are authentic an reliable, and an effective standard is provided for the structural safety of various types of hydraulic buildings.

A method for predicting temperature range of a high-temperature alloy coating of a segment of blading of a gas turbine belongs to the technical fields of service life prediction of hot parts of gas turbine and service state monitoring of surface coating. According to the invention, experiments and numerical calculation are combined to determine tissue change of the coating, so as to obtain a size L of an internal diffusion tissue in the coating; the L is substituted into a life prediction calculation model to predict a temperature, so as to carrying out temperature prediction on surface coating of the segment of blading of the gas turbine after service; meanwhile, temperature of the high temperature alloy matrix material is calculated out according to an aerodynamic heat value, a transfer value and a strength value; and a coating calculation temperature is obtained by temperature correction, and is then compared with an experimental temperature of the coating, so as to obtain a coating temperature closer to an actual working environment, and provide temperature parameters for further life prediction.

An optical system, a camera module and electronic equipment are provided. The optical system includes, in order from an object side to an image side: a first lens element with negative meandering force, an object-side surface of the first lens element being convex in a paraxial region thereof, and an image-side surface of the first lens element being concave in a paraxial region thereof; the second lens has positive bending force, and the object side surface of the second lens is a plane; a third lens having a positive meandering force; a fourth lens element with negative refractive power; a fifth lens element with positive refractive power; and a sixth lens having a positive meandering force. By reasonably configuring the surface types and the bending force of the first to sixth lenses, the optical system has a large field angle, the optical system can meet the design requirement of clear imaging in a large angle range, and the safety of a driving environment in the large angle rangecan be accurately judged in real time. And meanwhile, the object side surface of the second lens is a plane, so that the assembling eccentricity sensitivity of the second lens is reduced, the assembling yield is further improved, and the production cost is reduced.

The invention discloses a real-time building deformation monitoring system, relates to the technical field of building safety monitoring, and solves the problems of local deformation, small plate deformation, difficulty in direct observation and great potential safety hazards of a building due to external factors or self factors. The building deformation real-time monitoring system comprises a building wall, four end fixing pieces are evenly arranged on the inner side of the building wall, positioning shaft sleeves are arranged on the surfaces of one sides of the end fixing pieces, and supporting screw rods are arranged between the positioning shaft sleeves and the corresponding positioning shaft sleeves. Through the arrangement of the supporting screw rod, a power executing mechanism, a correction adjusting mechanism, a bottom connecting block, a longitudinal stand column, a first laser probe, a second laser probe and an infrared scanning assembly, the local deformation amount of the surface of the building wall and the inclination angle of the upper portion of the wall towards the outer side can be monitored in real time; technicians can judge the safety of the building more visually, and potential safety hazards are reduced.

The invention relates to the technical field of unmanned aerial vehicle flight path verification, and discloses a laser point cloud-based unmanned aerial vehicle flight path validity verification method, which comprises the following steps of converting real flight flight path latitude and longitude coordinates into UTM coordinates; matching a three-dimensional point cloud tower corresponding to the tower type of the tower in the real flight track; determining a photo imaging range of the three-dimensional point cloud tower; verifying the validity of the simulated track; the method comprises the following steps: establishing a three-dimensional point cloud model matched with a tower in an actual track, simulating track flight inspection in the three-dimensional point cloud model, shooting a model picture, effectively evaluating the picture, generating an evaluation report, simulating track flight inspection in the three-dimensional model, and analyzing the effectiveness of the simulated picture. The safety and the accuracy of the actual flight path can be judged, and the fine inspection actual flight capability of a pilot can be inspected at the same time.

According to the bolt connection real-time detection system, a bolt encoder is arranged on the upper side of a bolt head through a pasting process, and a data receiving and processing device is arranged near a to-be-constructed node; an ultrasonic fixed-torque bolt wrench is in butt joint with a bolt, and the front end of the ultrasonic fixed-torque bolt wrench is close to an attaching plate; a fixing device is used for fixing a nut of the bolt; a connecting main plate is a structural plate, and the attaching plate is a connecting main plate used for connection; screw holes matched with the bolts are formed in the connecting main plate and the attaching plate; an electricity storage device, a signal converter and a signal transmitting device are arranged in the bolt head; and the electricity storage device, the signal converter and the signal transmitting device are connected with a piezoelectric device through wires. According to the bolt connection real-time detection system and method, the pre-tightening force of each bolt is monitored in real time, and the precision is high.