11results about How to "Safe recovery" patented technology

The invention discloses a decentralized identity authentication method using a DID technology, and the method comprises the following steps: S1, generating a public key and a private key by a user, and generating an identity identifier by using the public key; s2, the user combines the identity data with the identifier, encrypts the identity data and the identifier, and stores the encrypted identity data and identifier on the block chain; s3, the third-party authentication mechanism issues a verifiable certificate based on the identifier; s4, the user manages the verifiable certificate, signs the identity verification request by using a private key, and sends the signed identity verification request to the verifier; s5, the verifier verifies the validity of the signature through the public key on the block chain; s6, recording verification time, a signature and a result, and storing the verification time, the signature and the result on the block chain; s7, the user can recover the lost private key or identity identifier through multiple signatures or other mechanisms; and S8, providing a user-friendly interface, supporting cross-platform migration of identity data, following open standards and protocols, and establishing a transparent governance mechanism. According to the method, the block chain and the advanced encryption technology are combined, and safe storage and privacy protection of identity data are realized.

The invention discloses a coal face disaster prevention and control system and method. The system comprises a working face disaster prevention and control host and a goaf windshield arranged corresponding to a goaf. The control unit is electrically connected with a frequency conversion fan, an upper corner sensor group arranged at an upper corner, a working face safety state information screen arranged at a lower corner, a controllable air door and an air inlet side sensor group which are arranged at an air inlet side, and an air return side sensor group and an adjustable air window which are arranged at an air return side; the working face disaster prevention and control host comprises a central processing unit, and the central processing unit is connected with a power supply unit, a communication unit, a data display unit and a sound-light alarm unit. The system integrates the functions of monitoring, data storage, intelligent control, local decision making and the like, can realize the functions of multiple items of detection, evaluation, early warning, regulation and control and the like, and effectively guarantees the safe stoping of the coal face.

The embodiment of the present application discloses a deep coal seam roof blasting roof caving control and pressure relief anti-collision method, relates to the technical field of deep coal seam roof blasting roof caving control and pressure relief anti-collision. The blasting method comprises the following steps: selecting a key rock stratum; determining a high-position blasting roadway in the key rock stratum; drilling boreholes in the roof, floor and side of the high-position blasting roadway along the longitudinal direction and the transverse direction of the mining working face, the longitudinal boreholes are parallel holes, the transverse boreholes are fan-shaped holes, and the longitudinal boreholes and the transverse boreholes form grid-shaped boreholes; charging the drilled boreholes; simultaneously initiating the transverse boreholes first, a large amount of gas and strong shock waves generated by blasting are utilized to form a group of parallel fracture surfaces; and initiating the longitudinal boreholes hole by hole, in the longitudinal borehole initiation process, the free surface formed by the fracture surfaces is utilized to guide the blasting energy to gather on the free surface to crush rocks. The present application is suitable for the coal seam mining scene.

The application provides a partition method, device and equipment for power system outage recovery and a storage medium. The method comprises the following steps: determining a guarantee area based on the number and capacity of black-start power sources and the starting power of to-be-recovered conventional units and the node load power; including nodes and branches based on the rated power of the to-be-recovered conventional units in the guarantee area to obtain a feasible area; and determining the partition attribution of a new energy station based on the support power provided by the new energy station and the new energy consumption capacity of each partition in the feasible area to obtain an expanded area. The method can improve the execution efficiency of the power system recovery scheme.

The application discloses a data recovery method, a data recovery device and a computer readable storage medium, and the data recovery method comprises the following steps: a communication connection with a first storage device is established; in response to the first storage device running in an engineering mode, the storage data of the first storage device is read; in response to the storage data being logical data, the logical address of the storage data is acquired; and the storage data is written into a second storage device based on the logical address. Through the above scheme, the application can autonomously, safely and reliably recover the data of the storage device which cannot normally work, and effectively avoids the loss of key sensitive data.

The utility model discloses a main electric cabinet air conditioner fan which comprises a fixing plate, a mounting frame is mounted on the fixing plate, a fan body is mounted in the mounting frame, a mounting plate is mounted on the outer side of the fixing plate by arranging a clamping mechanism, a filter plate is fixedly arranged in the mounting plate, and the filter plate is arranged on the outer side of the fixing plate. The clamping mechanism comprises an inserting rod, a fixing sleeve, a clamping groove, an abutting plate, a connecting plate, a sliding groove, a sliding sleeve and a limiting mechanism, the inserting rod is fixed to the outer wall of the fixing plate and connected with the mounting plate in an inserted mode, the fixing sleeve is connected to the top end of the inserting rod in an inserted mode, the clamping groove is formed in the outer wall of the inserting rod, and firm connection between the mounting plate and the fixing plate is achieved through accurate design of the clamping mechanism; and through cooperation of the insertion rods and the fixing sleeves, the mounting plates can be rapidly separated from the fixing plates when needing to be detached, the convenience of replacement of the filter plates is greatly improved, and specifically, the stable clamping effect is achieved through the insertion structures between the insertion rods and the fixing sleeves of the clamping mechanisms.

The invention provides a vertical mining device and method suitable for a steeply inclined thin vein, and belongs to the technical field of vertical mining of mines, the vertical mining device suitable for the steeply inclined thin vein comprises a movable winch device and a cutting swing jacking device; the movable winch device is used for walking in a horizontal roadway of the mine and dragging the cutting swing jacking device in a vertical roadway of the mine; the cutting swing supporting and jacking device is used for downward cutting operation in a vertical roadway of a mine. According to the method, research on related vertical mining devices and mining methods is developed by combining occurrence characteristics and mining technical conditions of the steeply-inclined thin ore vein, and the use conditions and range of the ore deposit are discussed, so that the current situation of lack of mining devices and technologies of the mine steeply-inclined thin ore vein is changed, efficient, safe and economical mining of the mine is realized, and the mining efficiency is improved. The purposes of improving the grade of the extracted ore of the steeply inclined thin vein, reducing ore dilution and improving the economic benefit of the mine are achieved.

The present invention describes a method for compacting, top-connecting, gridding, and supporting coal gangue in goaf areas. Specifically, high-strength coal gangue concrete filling materials and pure gangue non-strength filling materials are adjusted through a control system, and the two materials are cross-sprayed to form a mesh structure state in the goaf that combines a high-strength grid support system with non-strength grid filling. The beneficial effects of the present invention are: the gangue mountain can be eliminated; the damage to the roof and floor plates can be reduced or eliminated, and the outflow of water from the roof and floor plates can be reduced; the outflow of gas can be reduced; the effect of retaining the two lanes can be ensured, the cost of retaining the lanes can be reduced, and coal pillar-free mining can be realized, the recovery rate of coal resources can be improved, the amount of tunnel excavation can be reduced, and the tension of mining and excavation can be alleviated; the amount of movement of the roof and floor plates in the goaf area can be greatly reduced or eliminated, the pressure of the roof and floor plates can be reduced, and good conditions can be created for the next layer mining; the air circulation in the goaf can be effectively prevented to avoid the spontaneous combustion of coal gangue and the spontaneous combustion of abandoned coal; and huge economic benefits can be brought to the enterprise.

The embodiment of the invention provides a login information retrieving method and computing equipment, and the method comprises the steps: receiving a password retrieving request for a target object, the password retrieving request comprising user information; based on the password retrieving request, sending a query request to the target object, the query request being used for requesting to query password information corresponding to the user information; receiving password information corresponding to the user information sent by the target object based on the query request; and sending the password information to a transmission medium corresponding to the user information. Based on the method provided by the embodiment of the invention, the purpose of retrieving the login information of the computer system can be achieved without initialization.

The invention relates to the technical field of electric automobile charging, in particular to an electric automobile charging connecting device which comprises a charging pile body used for supplying electric quantity to an automobile, the charging pile body is provided with a socket and a plug connected through a cable, and the plug is inserted into the socket. The charging pile comprises a charging pile body, a protection mechanism for withdrawing a plug in a lifting mode is installed on the charging pile body, a monitoring mechanism used for sensing the extending length of a cable is further arranged, the protection mechanism comprises a second connecting rod movably installed on the charging pile body, a positioning ring used for fixing the cable is movably connected to the second connecting rod, and a transmission roller is installed on the second connecting rod. The charging pile body is provided with a connecting roller used for pulling a plug on the cable to move, and a connecting rope is fixedly connected between the connecting roller and the positioning ring. According to the invention, the plug can be prevented from being forgotten on the ground or randomly moved by others, the occurrence probability of accidents is reduced, and the safety of a user in the use process is ensured.

The invention provides a data transmission optimization method, electronic equipment, a storage medium and a program product, and relates to the technical field of computers.The method comprises the steps that when a data backup instruction sent by a data center is received, performance detection is conducted on a plurality of remote disaster recovery nodes to obtain performance detection results; determining a target remote disaster recovery node from the plurality of remote disaster recovery nodes according to the performance detection result; performing type detection on the target remote disaster recovery nodes to obtain a type detection result; when the type detection result shows that the target remote disaster recovery node belongs to the heterogeneous network node, transmitting the target backup data to the target remote disaster recovery node by using the block chain heterogeneous network; or, when the type detection result shows that the target remote disaster recovery node belongs to the isomorphic network node, transmitting the target backup data to the target remote disaster recovery node by using the block chain isomorphic network. The technical problem of low reliability of data transmission in related technologies is solved, and the technical effect of improving the reliability of data transmission is achieved.