63results about How to "Address security risks" patented technology

The invention relates to a wide-angle projection optical system between an object side and an image side. The wide-angle projection optical system comprises a first optical system and a second optical system. The first optical system comprises a first lens unit and a second lens unit. The second optical system comprises a Mangin mirror. The first lens unit with positive effective optical power comprises an aperture diaphragm, provides the optical feature matching projection light rays of the object side and collects the light rays onto the aperture diaphragm. The second lens unit behind the first lens unit has the positive effective optical power. Relative to the first lens unit, the aperture diaphragm and the second lens unit, the Mangin mirror is closer to the image side. The first lens unit and the second lens unit form distortion real images at the front of the Mangin mirror which is provided with a penetration face and a reflection face, in this way, the light rays are subjected to the secondary refraction and the primary reflection, so that an image distortionless after zooming is generated on a screen and thinned, with aberration thereof reduced.

The invention relates to the technical field of security, and concretely discloses a face recognition unit entrance guard system and a face recognition unit entrance guard control method. The system includes a face recognition triggering module, a face image storage module, a face recognition control module, an inhabitant information server, a blacklist information server and an entrance guard module. The face recognition triggering module starts a face recognition function, the face recognition control module compares the current face image with inhabitant face images stored in the inhabitantinformation server, outputs a door opening signal to the entrance guard control module if matching is successful, matches the current face image with blacklist face images stored in the blacklist information server, and outputs an alarm signal if the matching is successful. The system solves a problem that existing entrance guard systems are inconvenient for opening the entrance guard and have security risks, can open the entrance guard through automatic face recognition to provide convenience for inhabitants, and can automatically give an alarm when recognizing criminal offenders through theautomatic face recognition in order to guarantee the property safety of the inhabitants.

The invention discloses a terminal upgrading method and device, a terminal and a storage medium. The method comprises: obtaining an upgrading task of a target upgrading terminal, version information of each to-be-upgraded device in the target upgrading terminal, an upgrading demand of each to-be-upgraded device and an original software package corresponding to each to-be-upgraded device; making atarget upgrading terminal upgrading package according to the version information of each to-be-upgraded device and the original software package corresponding to the to-be-upgraded device; determiningan upgrading strategy of the target upgrading terminal according to the upgrading requirement of each to-be-upgraded device and the upgrading task of the target upgrading terminal; and when the upgrading strategy of the target upgrading terminal meets a first preset condition, pushing the target upgrade terminal upgrade package to the target upgrade terminal based on the upgrade strategy of the target upgrade terminal, so that the target upgrade terminal upgrades each to-be-upgraded device in the target upgrade terminal according to the upgrade strategy and the upgrade package, and the security risk and vulnerability of the target upgrade device information can be quickly solved from the far end.

The invention provides a spring washer fastener characterized by comprising a spring washer (1) and one or more tongue pieces (2), wherein the spring washer (1) is a sheet with an inner hole (3), one side of the spring washer (1) is a convex surface, the other side is a concave surface, the tongue pieces (2) are arranged on the outer edge of the spring washer and on the side of the convex surface, the angle formed by each tongue piece (2) and a plane (4) where the outer edge of the spring washer is located is a first angle (5), and when the convex surface of the spring washer is under pressure, the first angle (5) is in negative correlation with the pressure borne by the spring washer (1).

The invention relates to the technical field of vehicle keys and provides a vehicle intelligent key management method and a vehicle control unit. The vehicle intelligent key management method comprises the steps that an unlocking awakening request is received from an intelligent key terminal, the unlocking awakening request includes a request key identification code and a request secret key, multiple sets of key unlocking relations are pre-stored in the vehicle, and each key unlocking relation includes a corresponding key identification code, a verification secret key and enabling permission;target enabling permission corresponding to the request key identification code is determined according to the pre-stored multiple groups of key unlocking relations; and when the target enabling permission indicates enabling prohibition permission, subsequent key matching operation for the request key is stopped to execute. Therefore, authority management of forgetting a standby key or illegally stealing the key is realized, an illegal person is prevented from starting the vehicle by using the keys, and safety performance of the vehicle is improved.

The invention discloses an urban community security protection system based on the Internet of Things. The system comprises a property management center, an access control subsystem, a monitoring subsystem, an alarm subsystem and a communication module, wherein the access control subsystem and the monitoring subsystem are both linked to the property management center through a wireless communication module, and the property management center is connected to a signal input end of the alarm subsystem through the communication module. The access control subsystem obtains a current face image, matches the current face image with stored resident face images and then opens a door, so that the problem are solved that doors of existing access control systems are inconvenient to open and there arepotential security hazards. The door is opened through automatic face recognition, so that convenience is provided for residents, and the safety of the residents is guaranteed from entering the door.Situations of a community are monitored in real time through the monitoring subsystem, image information is transmitted to the property management center, and on-duty personnel monitors real-time images of the community on a remote monitoring platform in real time, so that the effect of security protection is achieved.

The invention relates to a construction method for seepage anticipation and treatment of an underground continuous wall. The construction method includes the following steps that according to the construction condition of the underground continuous wall, a seepage detection point is selected; during construction of underground continuous wall, a detection pipe is buried at the selected seepage detection point; after the construction of the underground continuous wall is finished, a detection probe of a sonar measuring instrument is sent into the detection pipe for detecting, and a detection result is obtained; and grouting water stop treatment is conducted on the leakage detection point which the seepage coefficient is larger than the set range in the detection result. According to the construction method, whether the underground continuous wall has seepage hidden danger or not is detected in advance to ensure safety of foundation pit excavation, if yes, grouting water stop treatment is conducted timely, the risk of water and sand gushing during foundation pit excavation is avoided, probability of seepage of the underground continuous wall is decreased, and construction safety of a foundation pit is improved.

The invention provides a docker-based test method and device, relates to the technical field of computer security, and can solve the problem of security risk caused by code open source of a third-party library. The specific technical scheme is as follows: constructing a container test environment based on an application container engine docker; Operating a python test case in the container test environment; And obtaining a test result of the python test case.

The invention provides a wireless access network notification area updating method and device, a terminal and a base station. The radio access network notification area updating method comprises the following steps: when a terminal is in an RRC inactive state, sending an RRC recovery request to a base station, and if an RRC message fed back by the base station is received, comparing whether a first NCC value and a second NCC value are the same or not; if the first NCC value is the same as the second NCC value, deleting an access layer root key generated according to the first NCC value and other keys and security tokens generated by using the root key, and recovering a security context held before sending the RRC recovery request message to the base station; wherein the first NCC value isan NCC value in a first RRC release message received most recently before the RRC recovery request message is sent to the base station, the second NCC value is an NCC value in an RRC message fed backby the base station, and the RRC message comprises an RRC recovery message or an RRC release message. According to the scheme, the problem that in the prior art, safety risks exist in the RNAU processwithout executing anchor point transfer is solved.

The invention relates to a method for realizing security storage of a mobile terminal in a mobile internet based on a TrustZone technology. Private applications and data in the mobile terminal are loaded to a hardware isolation security region of the mobile terminal, and an access request of a non security region is refused, so that information security is ensured. The core is to self-develop a TrustZone IP kernel driver and a trusted application; a security kernel of a security world is accessed through a client of an ordinary world of the trusted application; the corresponding trusted application is started; a specific memory region is subjected to hardware isolation through the IP kernel driver; data and codes encrypted through a homemade encryption/decryption module and stored in an external storage device are loaded to an isolation region of a memory; and the encrypted data and codes are decoded by calling a TCM chip after being loaded, so that dynamic storage security of information is guaranteed finally.

The invention discloses a method and device for managing communication security of an intelligent electric meter. The method comprises steps that messages sent by other modules and external equipmentare received, the other modules are a metering module and an extension module in the intelligent electric meter, and the intelligent electric meter comprises a metering module, a management module andan extension module; the link layer format of the message is checked so as to determine a qualified message with a qualified format, legality of the qualified message is verified, and the qualified message passing the legality verification is determined as a legal message; and communication data interaction of legal messages is realized by utilizing a software security management application program in a manner of calling the embedded security control module.

The invention provides a pipeline connector device. The pipeline connector device comprises a pair of fixing slips. The pair of fixing slips is composed of multiple slips plates which are sequentially spliced in the circumferential direction of the fixing slips. Each slips plate is wrapped around a first pipe body and a second pipe body to be connected. At least one slips plate is provided with a first locating piece used for being inserted into a first locating hole of the first pipe body for locating. At least one slips plate is provided with a second locating piece used for being inserted into a second locating hole of the second pipe body for locating. The pipeline connector device solves the problem that in the prior art, large safety risk exists when a hot work joint manner is adopted.

The invention provides a data processing method and device, a server, and a terminal. The method comprises the steps: receiving a downloading link transmitted by the terminal and first verification data corresponding to first downloading data downloaded by the terminal according to the downloading link; downloading second downloading data according to the downloading link transmitted by the terminal; judging whether second verification data corresponding to the second downloading data is the same as the first verification data or not; transmitting a first response message which is used for indicating that the downloading link is not tampered to the terminal under the condition that the judgment result is that the second verification data corresponding to the second downloading data is thesame as the first verification data; and/or transmitting a second response message which is used for indicating that the downloading link is tampered to the terminal under the condition that the judgment result is that the second verification data corresponding to the second downloading data is not the same as the first verification data. According to the invention, the method solves a problem inrelated technologies that the tampering of the downloading link causes the safety risks of the terminal, and achieves an effect of guaranteeing the data safety of the terminal.

The invention discloses an online motor rotor temperature measuring probe which comprises a reflector, an infrared light source, a focusing mirror, a receiving element, a light filter and a heat insulation sleeve. The probe is integrally protected by the heat insulation sleeve, screwed on a shell or an end cover and different from a common infrared temperature measuring probe, the probe effectively overcomes the shortcomings of unstable reflection and polarized light of a rotor surface caused by rotation by the aid of the light filter, a measuring element is mounted in the heat insulation protection sleeve, heat shock of heat conduction on a photoelectric element is relieved, and mechanical shock of body vibration on the elements is decreased when a motor runs. The probe has the advantages that the probe is accurate in measurement and fine in safety, the effect on the structure of the motor is low and the like, the probe can be conveniently and rapidly mounted on the end cover of the motor, the temperature of the end face of the rotating rotor is continuously measured in real time, and the probe effectively solves the problems that heat loss and safety risks caused by a window formed in the end cover in the past, temperature measuring test paper is pasted on the surface of a rotor, the highest temperature can only be inspected in a split manner, and the temperature change process cannot be reflected.

The invention relates to a protection device used for electric transmission line tower climbing operation, is particularly suitable for being used in overhead transmission line construction, interruption maintenance, operation with power uninterrupted and other tower climbing operation and belongs to the technical field of electric transmission line pole and tower field operation tools. The protection device comprises a safety rope with one end being hung on the human body, a plurality of short tying ropes which are arranged at intervals in the height direction of an electric transmission line pole and tower, and a differential speed blocking device which is used for clamping the safety rope which rapidly rotates anticlockwise. The differential speed blocking device is provided with a wire inlet which is used for penetrating the safety rope, a wire outlet and a clamping mechanism. The protection device is simple in structure, convenient to use, safe, reliable, wide in application range and high in operation efficiency.

The invention discloses a lifting-following rotary-type self-balancing tower crane and aims to provide a tower crane design capable of effectively protecting the tower frame body, improve the anti-overturning capacity of the tower crane, increase the counter weight and the bearing capability of the tower crane, and enable the tower crane to be suitable for transporting and hoisting large-scale materials and components of buildings, equipment and facilities. The lifting-following rotary-type self-balancing tower crane comprises a tower frame, a luffing trolley, a clump weight, a rotary mechanism, a luffing cantilever and a tower frame protection structure. The invention worthily illustrates that in a conventional tower crane structure, the cantilever is also called a big arm and is connected to the front and rear sides of a cone pillar at the upper end of a rotary mechanism, one side of the connection point of the cantilever is provided with a balance arm or a counter weight arm and the other side of the connection point is provided with a suspension arm. In the invention, the basic structure of the luffing cantilever is basically the same as the existing cantilever structure and only the connecting manner of the cantilever and the rotary mechanism is changed as shown below. Therefore, the cantilever of the lifting-following rotary-type self-balancing tower crane can luff, so that the cantilever is named the luffing cantilever to be distinguished from the cantilever in the prior art.

The invention relates to a method for recycling acid in synthesis of 2-nitro-4-methylsulfonylbenzoic acid, which comprises the following steps of 1) by using 4-methylsulfonyltoluene as a raw material,carrying out nitration reaction and oxidation reaction in a concentrated sulfuric acid medium, filtering dilute acid mother liquor obtained after the 2-nitro-4-methylsulfonylbenzoic acid crude product, and concentrating to obtain recycled acid, 2) recycling the recovered acid, and removing the reaction by-product polynitro compound from the dilute acid mother liquor by adopting a resin adsorptionmethod, so that the content of the polynitro compound in the dilute acid mother liquor after adsorption is less than 200 ppm, 3) concentrating the adsorbed dilute acid mother liquor, applying the concentrated dilute acid mother liquor to the nitration reaction, and supplementing the required catalyst to continue the oxidation reaction after the nitration reaction is finished, and 4) desorbing andregenerating the adsorbed resin through solvent desorption, concentrating, filtering and washing to recover the reaction by-product, thereby avoiding the safety and environmental protection risks caused by continuous accumulation of the by-product concentration in the synthesis process, and being safe, practical, green and environment-friendly, and suitable for industrial implementation.

The invention discloses a rotary disk type measuring cup carrier mechanism and a use method thereof and relates to the technical field of trace element detection. The rotary disk type measuring cup carrier mechanism mainly comprises a fixed disk body, a rotating disk body, a lifting cleaning table, a detecting electrode, a plurality of liquid suction needles, a plurality of liquid feeding needles,a wiping device, a plurality of detection liquid outlet needles, a sample liquid outlet needle and a stirring device. The rotary disk type measuring cup carrier mechanism can keep a fixing state of the electrode in detection and an electrode movement mechanism is avoided so that the problems of safe risk of the electrode movement and measuring errors caused by the electrode movement are solved. The detection electrode can be cleaned in detection so that the complex manual cleaning process is avoided and the detection efficiency is improved.

The invention relates to an interface calling method and device, computer equipment and a readable storage medium. The method comprises the steps that a first micro-service carries out the Hash of JWTinformation, obtains a first Hash value, and carries out the signature encryption through a private key of the first micro-service; the first micro-service encrypts the request parameter and the signature content through a public key of the second micro-service, and sends the encrypted content to the second micro-service through an interface; the second micro-service decrypts the received contentthrough a private key of the second micro-service, and performs JWT Hash value decryption through a public key of the first micro-service to obtain a second Hash value; the second micro-service compares the second Hash value with the first Hash value; and if the comparison result of the second Hash value and the first Hash value is consistent, the second micro-service returns service data corresponding to the request parameter to the first micro-service through the interface. According to the invention, the problems of tedious verification steps and security risks in the prior art are solved,and security and effectiveness of information interface calling among multiple platforms are realized.