34results about How to "Solve security protection" patented technology

The invention discloses a method, a device and a system for safety protection used in failure of putting away an oar of a blade of a wind turbine generator. The method comprises the following steps: collecting and computing a real-time rotating speed of a blade hub; after a safety chain system sends a stopping command, if the rotating speed of the blade hub is continuously increased, judging a pitch control system to have a fault of putting away the oar; computing a yaw angle command; sending the computed yaw angle command to a master control PLC (Programmable Logic Controller), and controlling a yaw system to carry out a yaw action through the master control PLC. The system comprises a rotating speed computing module, a pitch control fault judging module and a yaw command computing module. The device comprises a safety protection controller internally provided with the system and connected with the safety chain system and the master control PLC; a rotating sensor used for collecting the real-time rotating speed of the blade hub; and a rotating speed processing circuit connected with the rotating speed sensor and the safety protection controller. According to the invention, the overspeed risk of the wind turbine in a stopping process is reduced, and the safety of the wind turbine and the reliability of judgment of the pitch control fault are improved.

The invention relates to the technical field of information security, discloses a private key processing method based on an SM2 algorithm, a terminal and a key center, and solves the security protection problem of a private key in an open environment in the prior art. The method is applied to a key center, and comprises the following steps: receiving a key application message of a client, the keyapplication message comprising a key identifier and a first private key factor of the client; obtaining a private key corresponding to the key identifier according to a key generation rule; obtaininga second private key factor according to a private key corresponding to the key identifier and the first private key factor; and sending the second private key factor to a server, so that the server encrypts and stores the second private key factor. The embodiment of the invention is suitable for the decentralized storage and use process of the private key in the open environment.

The embodiment of the invention discloses a protection method and device for a target program, equipment and a storage medium. The method comprises the following steps that: obtaining an intermediatelanguage corresponding to the operation code of an execution engine; converting the intermediate language corresponding to the operation code of the execution engine according to a conversion rule; adopting the operation code corresponding to the converted intermediate language to compile the execution engine to obtain the recompiled execution engine; obtaining the intermediate language corresponding to a target program; and converting the intermediate language corresponding to the target program according to the conversion rule, wherein the converted target program is executed through the recompiled execution engine. Through the technical scheme of the method, the safety protection problem of a unity 3d program can be solved.

The invention provides a method for obtaining mobile IP type of a mobile terminal in a wireless network: a mobile IP proxy server reports related information of a mobile IP type to a user, who requires a mobile IP type, according to the mobile IP type identifying field in a mobile IP logging request message of a mobile terminal. A system for imparting a mobile IP type to a mobile terminal in a wireless network at least includes: a mobile terminal, a mobile IP proxy server, and a user who requires a mobile IP type. The mobile terminal transmit a mobile IP logging request message to a mobile IP proxy server for performing mobile IP logging in; and the mobile IP proxy server reports mobile IP type related information of the mobile terminal to the user who requires a mobile IP type according to the mobile IP type identifying field in a mobile IP logging request message. The invention also provides a mobile terminal for wireless network, when the mobile terminal is logged in a network for the first time or keywords for the mobile terminal is needed to be updated, the mobile terminal transmits mobile IP logging request message to a mobile IP proxy serve for performing mobile IP logging in, and a mobile IP type identifying field for identifying mobile IP type of the mobile terminal is included in the mobile IP logging request message.

A data encryption processing method for performing signature verification on an application program interface comprises the following steps: before a client of an application program sends a request to a corresponding server interface, firstly obtaining an exclusive asymmetric key through a server, thereby ensuring the security of the server accessing the client; when a client initiates an interface request to a corresponding server interface, a generated symmetric key is matched with a hash algorithm to encrypt data of a request body and generate a signature body of the request body, the server forms a signature verification body by using received request body parameters through the same encryption algorithm, and the signature body is verified through the signature and signature verification process. The anti-repudiation of the data original issuing behavior and the anti-repudiation of the data receiving behavior are realized; according to the invention, the non-repudiation of data request and transmission is realized by carrying out the encryption processing of signature verification on the data receiving and transmitting voucher; the safe and orderly use of the application program interface is enhanced, and the credibility, the safety and the traceability of the original request interface of the application program are ensured.

The invention discloses a method, a device and a system for safety protection used in failure of putting away an oar of a blade of a wind turbine generator. The method comprises the following steps: collecting and computing a real-time rotating speed of a blade hub; after a safety chain system sends a stopping command, if the rotating speed of the blade hub is continuously increased, judging a pitch control system to have a fault of putting away the oar; computing a yaw angle command; sending the computed yaw angle command to a master control PLC (Programmable Logic Controller), and controlling a yaw system to carry out a yaw action through the master control PLC. The system comprises a rotating speed computing module, a pitch control fault judging module and a yaw command computing module. The device comprises a safety protection controller internally provided with the system and connected with the safety chain system and the master control PLC; a rotating sensor used for collecting the real-time rotating speed of the blade hub; and a rotating speed processing circuit connected with the rotating speed sensor and the safety protection controller. According to the invention, the overspeed risk of the wind turbine in a stopping process is reduced, and the safety of the wind turbine and the reliability of judgment of the pitch control fault are improved.

The invention discloses a steel wire rope brake. A movable brake plate is matched with a connecting arm in a rotating manner, wherein the other end of the connecting arm is matched with a sliding shaft in the rotating manner; the two ends of the sliding shaft are arranged in the cam surfaces of two side plates respectively; a fixed brake plate is provided with a locking hook frame which is provided with a locking hook capable of locking the sliding shaft; electromagnets are arranged on the two sides of an electromagnet seat respectively; a guide pillar is fixedly connected to the upper end of an impact rod after movably penetrating through the electromagnet seat; the impact rod movably penetrates through the electromagnet seat; the lower section of the impact rod is sleeved with a spring; the lower end of the impact rod is opposite to the swinging end of the locking hook; a pressure block is arranged on the impact rod, and is positioned in the electromagnet seat; inclined surfaces are formed on the two sides of the pressure block; two support rods are arranged in the electromagnet seat, and form upwards inclined surfaces; the lower ends of the support rods are arranged on the electromagnet seat in the rotating manner; the support rods can be pressed by the electromagnets; the sliding shaft is provided with an upper spring seat; a spring support shaft is arranged between the two side plates, and is provided with a lower spring seat; an energy storage part is arranged between the upper and lower spring seats; an impact triggering mechanism can be reset by a resetting mechanism.

The invention discloses a flame retardant impregnating device for a foam plastic board, and relates to the technical field of mechanical equipment.The flame retardant impregnating device comprises a machine shell, an impregnating bin is fixedly connected to the inner side wall of the machine shell, an air suction pipe is fixedly connected to the right side wall of the impregnating bin, and an air suction pump is fixedly connected to the side wall of the right end of the machine shell; the right end of the air suction pipe penetrates through the machine shell and is fixedly connected with the output end of an air suction pump, a first valve is fixedly connected to the upper end of the left side wall of the dipping bin, a first water pipe is fixedly connected to the middle of the left side wall of the dipping bin, the left end of the first water pipe penetrates through the machine shell, and a second valve is fixedly connected to the middle of the first water pipe. The end, away from the machine shell, of the first water pipe is fixedly connected with a material storage tank, and the top end of the material storage tank is fixedly connected with a feeding port. By changing the pressure intensity in the impregnation bin, a flame retardant can be fully impregnated on a plastic plate, the possibility of incomplete impregnation is reduced, and the flame retardant strength of the plastic plate is improved.

The invention discloses an automatic resetting steel wire rope brake, which comprises two side plates, a fixed brake plate, a moving brake plate, a motor lead screw and push block resetting mechanism, an electromagnet resetting mechanism and an electromagnetic triggering mechanism, wherein the fixed brake plate and the moving brake plate are arranged in parallel, and an interval is kept between the opposite clamping surfaces of the fixed brake plate and the moving brake plate; two sides of the moving brake plate are respectively and rotatably matched with one end of a link arm, and the moving brake plate can do translational motion towards or away from the fixed brake plate under the drive of the two link arms; the other end of each of the two link arms is rotatably matched with one end of a sliding axle; two ends of the sliding axle are respectively in sliding fit with arc-shaped grooves of the two side plates; a hooking part is formed on a swing-type latch hook, and is used for hooking and locking the sliding axle; the swing end of the swing-type latch hook is triggered by the electromagnetic or mechanical triggering mechanism to enable the swing end to release the sliding axle; the electromagnetic triggering mechanism, the latch hook, the sliding axle and the moving brake plate are promoted to reset by the motor lead screw and push block resetting mechanism through the electromagnet resetting mechanism. According to the automatic resetting steel wire rope brake disclosed by the invention, elevator ascending and descending over-speed protection and car accidental movement protection can be realized simultaneously.

The invention provides a method for obtaining mobile IP type of a mobile terminal in a wireless network: a mobile IP proxy server reports related information of a mobile IP type to a user, who requires a mobile IP type, according to the mobile IP type identifying field in a mobile IP logging request message of a mobile terminal. A system for imparting a mobile IP type to a mobile terminal in a wireless network at least includes: a mobile terminal, a mobile IP proxy server, and a user who requires a mobile IP type. The mobile terminal transmit a mobile IP logging request message to a mobile IPproxy server for performing mobile IP logging in; and the mobile IP proxy server reports mobile IP type related information of the mobile terminal to the user who requires a mobile IP type according to the mobile IP type identifying field in a mobile IP logging request message. The invention also provides a mobile terminal for wireless network, when the mobile terminal is logged in a network for the first time or keywords for the mobile terminal is needed to be updated, the mobile terminal transmits mobile IP logging request message to a mobile IP proxy serve for performing mobile IP logging in, and a mobile IP type identifying field for identifying mobile IP type of the mobile terminal is included in the mobile IP logging request message.

The invention relates to a flexible guiding special lift car stabilizing device and method. The device is composed of a stabilizing support, a connecting mechanism and a self-locking mechanism. The connecting mechanism comprises connecting plates, final limit cams and stabilizing bars, and the self-locking mechanism comprises rockers, return springs, driving bolts, bearings, driven bolts and pins. When a lift stops on a floor, a car door is opened to drive the connecting mechanism to release self locking, the stabilizing bars are pushed into a shaft support so as to stabilize the lift car, and the self-locking mechanism returns to the self-locking state. After unloading and loading, the car door is closed, the connecting mechanism is driven to release self locking, the stabilizing bars are withdrawn, the self-locking mechanism performs self locking again, and the lift runs normally. The problem that the lift car sways when people or cargos enter or exit from the flexible guiding mining lift is solved, various safety problems caused by partial swaying during rerunning of the lift car are avoided, the lift car can be started stably after stopping on one floor, reliability and stability of the lift are improved, driving does not need to be set independently, and the flexible guiding special lift car stabilizing device is simple in structure, good in lift car stabilizing effect, low in cost and safe and reliable.

The invention discloses a computer data security control device. The computer data security control device comprises a microprocessor, relay drive parts, a computer power source control relay, a computer network control relay, a computer power source, a double-pole-double-throw switch, computer hard disks, interface conversion parts, a network card and a computer network hub. The relay drive parts comprise a first relay drive part and a second relay drive part. The computer hard disks comprise a secrecy hard disk and a common computer hard disk. The interface conversion parts comprise a first interface conversion part and a second interface conversion part. As the microprocessor is adopted for controlling a relay driver, information safety protection of the hard disks of a computer and safety protection after the computer is networked are effectively achieved, the optimal control combination is achieved, the computer data security control device is simple in structure, low in cost and easy to popularize, the control method is high in sensitivity, and once an alien invader enters, the computer data security control device immediately stops the alien invader from entering.

A lead-out end phase-failure protection method for a leakage circuit breaker adopts the following four measures: the first measure is the selection of an acquisition signal, namely, a lead-out end phase-failure current change is acquired as a signal; the second measure is the fabrication of current inductive elements, namely, a plastic loop (4) is used as a core, an enameled wire layer (3) and an insulating tape layer (2) are wound around the exterior of the core, and the two ends of the enameled wire are led out by two insulating leads 1; the third measure is the installation of a leakage circuit breaker with a lead-out end phase-failure protection function, namely, three current inductive elements are respectively arranged on three live wires between a zero sequence mutual inductor (6) and a lead-out column (8) in a common leakage circuit breaker (5); and the fourth measure is the setting of a lead-out end phase-failure protection procedure for the leakage circuit breaker, namely, the current inductive elements collect the current change information caused by the phase failure, transfer to an AD conversion processor and then send to a microprocessor, the microprocessor instructs to alarm and implements break-brake protection after comprehensive analysis. The method solves the lead-out end phase-failure problem that is long for being solved and cannot be solved and fills in the gap in the field of phase failure protection.

The invention discloses a computer data security control device. The computer data security control device comprises a microprocessor, relay drive parts, a computer power source control relay, a computer network control relay, a computer power source, a double-pole-double-throw switch, computer hard disks, interface conversion parts, a network card and a computer network hub. The relay drive parts comprise a first relay drive part and a second relay drive part. The computer hard disks comprise a secrecy hard disk and a common computer hard disk. The interface conversion parts comprise a first interface conversion part and a second interface conversion part. As the microprocessor is adopted for controlling a relay driver, information safety protection of the hard disks of a computer and safety protection after the computer is networked are effectively achieved, the optimal control combination is achieved, the computer data security control device is simple in structure, low in cost and easy to popularize, the control method is high in sensitivity, and once an alien invader enters, the computer data security control device immediately stops the alien invader from entering.

The invention relates to a flexible guiding special lift car stabilizing device and method. The device is composed of a stabilizing support, a connecting mechanism and a self-locking mechanism. The connecting mechanism comprises connecting plates, final limit cams and stabilizing bars, and the self-locking mechanism comprises rockers, return springs, driving bolts, bearings, driven bolts and pins. When a lift stops on a floor, a car door is opened to drive the connecting mechanism to release self locking, the stabilizing bars are pushed into a shaft support so as to stabilize the lift car, and the self-locking mechanism returns to the self-locking state. After unloading and loading, the car door is closed, the connecting mechanism is driven to release self locking, the stabilizing bars are withdrawn, the self-locking mechanism performs self locking again, and the lift runs normally. The problem that the lift car sways when people or cargos enter or exit from the flexible guiding mining lift is solved, various safety problems caused by partial swaying during rerunning of the lift car are avoided, the lift car can be started stably after stopping on one floor, reliability and stability of the lift are improved, driving does not need to be set independently, and the flexible guiding special lift car stabilizing device is simple in structure, good in lift car stabilizing effect, low in cost and safe and reliable.

The invention provides a device and method for winding or unwinding a cuff. The device for winding or unwinding the cuff comprises a winding mechanism, the cuff attached to the inner portion of the winding mechanism and a control part used for controlling the winding mechanism to carry out winding or unwinding. The device is characterized in that the winding mechanism is made to carry out winding or unwinding in a barrel shape through the control part to wind or unwind the cuff in the winding mechanism, so that the cross section area of the winding mechanism is changed.

The invention discloses a preparation method of a microsphere for detonation of blasting in an oil field layer. The method comprises the following steps of: evenly mixing raw materials to obtain powder; then adding a collodion acetone solution in partial powder, stirring and agglomerating, and then carrying out forced screening to obtain a qualified product; subsequently, placing the qualified product in a sugar-coating machine, spraying a lac ethanol solution, scattering the powder so that the qualified product rounds as a ball and is enlarged, and screening to obtain a semi-finished product; placing the semi-finished product in the sugar-coating machine, spraying the collodion acetone solution, scattering the powder so that the semi-finished product rounds as a ball and is enlarged, andscreening to obtain a qualified semi-finished product; and placing the qualified semi-finished product in the sugar-coating machine for primary cladding and cladding, and drying to obtain the microsphere with the particle size of 1mm-3mm. The microsphere prepared by the method of the invention is easily transported in the rock seam at the bottom of an oil well; the detonation blasting effect of the microsphere is good, and the success rate of the ignition reaches 100%, thereby effectively improving the oil-production efficiency of the oil field; and the microsphere is safe and reliable and has low cost.

The present invention provides an Android file password box system based on double chaotic hash file control. Quick browse, add, modify, delete, backup and rebuild operations of encrypted files in the external storage; when the user exits, the content of the fast table is written back to the data structure file. The invention fully considers the user's mobile phone configuration and personal security requirements, avoids mandatory occupation of the user's storage space, and the user can flexibly set different file security protection levels. According to the characteristics of the Android system, this system designs a new data structure file to realize the control of the file, avoids the trouble of users setting different passwords for encrypting multiple files, and provides the function of protecting copyright files; and the system reconstruction function avoids illegal users. The attack greatly improves security and runs faster.

The invention discloses a deep foundation pit safety protection device for building construction. The deep foundation pit safety protection device comprises first protection plates which are symmetrically installed, wherein second protection plates are symmetrically installed between the first protection plates; connecting clamping strips are installed on the two side edges of each second protection plate; connecting clamping grooves matched with the connecting clamping strips are formed in the positions, close to one side edges of the second protection plates and corresponding to the connecting clamping strips, of the first protection plates; connecting frames are installed at the two ends of the side edges, close to each other, of the second protection plates; supporting strip plates arefixedly installed inside the connecting frames; locking bolts are installed on the sides, close to each other, of the supporting strip plates and located at the ends, close to the first protection plates, of the connecting frames in a penetrating mode; threaded locking grooves matched with the locking bolts are formed in the positions, corresponding to the locking bolts, of the first protection plates; and connecting blocks are fixedly installed between the second protection plates and located on the side edges, close to each other, of the supporting strip plates.

The invention relates to the technical field of information security, discloses a private key processing method based on an SM2 algorithm, a terminal and a key center, and solves the security protection problem of a private key in an open environment in the prior art. The method is applied to a key center, and the method includes: receiving a key request message from a client, where the key request message includes a key identifier and a first private key factor of the client; according to a key generation rule, obtaining the private key corresponding to the key identifier; obtaining a second private key factor according to the private key corresponding to the key identifier and the first private key factor; sending the second private key factor to the server, so that the server side encrypts and stores the second private key factor. The embodiment of the present invention is applicable to the process of decentralized storage and use of private keys in an open environment.