54 results about "Security engineering" patented technology

The invention provides a human body posture identification method and system, and belongs to the technical field of security engineering. The method comprises the following steps of (1) at least collecting six parameters, including linear acceleration and angular acceleration, of a human body in X, Y and Z directions of space; (2) analyzing data features presented by the parameters, and selectingt data statistics features for each type of data as condition attributes for judging human body postures, wherein t is an integer greater than 1; (3) extracting the data statistics features of a dataset under various human body postures to form a sample set, and dividing the sample set into training samples and test samples; (4) according to the training samples and the test samples, building a decision tree classification model; and (5) based on the decision tree classification model, performing real-time classification on collected data to identify the human body postures. The human body posture identification method and system is high in identification accuracy, high in identification speed, high in adaptability to multiple input samples, and strong in robustness; and output of a classification result has high error tolerance.

An embodiment of the present invention is directed to quantifying the value of an individual log source sent to the SIEM. Through vendor-agnostic measurement, an algorithmic model utilized by a Log Quality Value (LQV) index enables security engineers and incident response (IR) teams to determine which logs provide the most value for security investigations. An embodiment of the present invention recognizes a positive correlation between the LQV index and critical logs used to investigate the attack. An embodiment of the present invention may be extended to evaluate the LQV algorithms against a more extensive dataset from live production environments and to further measure the tool effectiveness through periodically comparing the LQV index to logs used to detect security incidents.

The invention relates to the field of transportation system safety engineering, and especially relates to a method for evaluating safety of highways by utilizing actual driving speed data of road sections. For the problems that theories of conventional safety evaluation methods cannot fully reflect the driving speed changes of vehicles under complex alignment conditions, the method for evaluatingsafety of highways by utilizing actual driving speed data of road sections is provided. A novel method for evaluating safety of highways by using driving speed characteristics can be provided by adopting massive vehicle monitoring data collected by a vehicle mounted GPS technology to analyze the speed characteristics of different road unit types; and speed change rules can be obtained through analysis when the vehicles with different types drive on different unit types of a highway, and close combination of highway alignment and the actual driving speed of the vehicles has great significance.

The invention relates to a high-shielding composite energy-saving anti-freezing signal transmission cable. The signal transmission cable comprises a computer cable core, a control cable core, filling materials and an outer sheath; according to the cable, the computer cable core and the control cable core are combined into a composite cable, a composite aluminum-plastics tape outer shielding layer is winding and enveloped outside the composite cable, and the anti-freezing outer sheath is extruded and enveloped outside the shielding layer. The cable is simple and convenient in the manufacturing process, and low in cost. The cable has the advantages of low medium consumption, high property in resisting interference, high mechanical strength and good combining and using effects. The cable is widely used in the situations requiring special electric cables such as security engineering, fire engineering, monitoring engineering, light-current systems engineering, composite wiring, bank monitoring engineering, network engineering, and audio engineering.

The invention discloses a door and window roller shutter structure for smart home of security engineering, and relates to the technical field of home doors and windows. The door and window roller shutter structure comprises a roller shutter top box, a pair of roller shutter side frames, a sunshade curtain cloth and a shading curtain cloth; a first separating board and a second separating board arearranged in the roller shutter top box in parallel; the interior of the roller shutter top box is separated into a first cavity, a second cavity and a third cavity by the first separating board and the second separating board; a pair of roller shutter feeding and discharging ports are formed in the surface of the second cavity in parallel; a pair of roller shutter rotating shafts are arranged inthe second cavity in parallel; the two roller shutter side frames are symmetrically fixed to the surface of the lower part of the roller shutter top box correspondingly; and the two roller shutter rotating shafts is wound with the sunshade curtain cloth and the shading curtain cloth on separately and correspondingly, and one side edge of the sunshade curtain cloth and one side edge of the shadingcurtain cloth penetrate through the two roller shutter feeding and discharging ports in sequence separately and correspondingly. According to the door and window roller shutter structure for the smarthome of security engineering, the sunshade curtain cloth and the shading curtain cloth are arranged in a matched mode, a shading or sunshade effect can be realized, use requirements of current usersare met, and high market population value is achieved.

The invention discloses a monitoring system for Internet-of-things weak current security engineering, which comprises a camera, an information acquisition module, a database, an information judgment module, an information analysis module, an alarm module, a buzzer interconnection module and a user terminal, and is characterized in that whether an image target is a mobile image or a fixed image isjudged through a coordinate position; the system can actively identify and distinguish the fixed target and the moving target, reduce the time required by manual distinguishing according to images, reduce the labor intensity of workers, extract sample image information and maintainer face information from a database by arranging an information analysis module. According to the system, the fixed image and the moving image are analyzed and processed, the moving targets entering the weak current well are distinguished, and the buzzer is started by the alarm module to warn and expel the invasion targets, so that the equipment is prevented from being damaged by the invasion targets, the safety of the equipment is ensured, and the loss is reduced.

The invention discloses a ground punching device for security engineering construction. The device comprises a bottom plate, wherein a supporting rod is fixedly connected to the left side of the uppersurface of the bottom plate; the top end of the supporting rod is fixedly connected to the lower surface of a supporting plate; a first chute is formed in the lower surface of the supporting plate; afirst sliding block is slidably connected in the first chute; a connecting rod is fixedly connected to the lower surface of the first sliding block; and a traction rope is fixedly connected to the left side surface of the connecting rod. According to the ground punching device for security engineering construction, a first motor is arranged, the traction rope is driven by the rotation of an output shaft of the first motor to pull a roller wheel to move leftwards, the roller wheel moves leftwards to downwards extrude a triangular plate, the triangular plate moves downwards to drive a fixing plate to move downwards, and when the fixing plate descends to be in contact with the ground, the bottom plate can be fixed, so that the punching device is prevented from deviation caused by vibration during work, and convenience is brought to people when the punching device is used for punching.

The invention discloses radiation-proof concrete capable of reducing secondary radiation and a preparation method of the concrete, and belongs to the field of buildings. The concrete comprises the following raw materials in parts by weight: 100-200 parts of high aluminum cement, 500-700 parts of barite, 80-160 parts of alumina ceramics, 15-40 parts of borax, 50-120 parts of steel slag micro-powder, 70-140 parts of slag micro-powder, 10-30 parts of steel fibers, 2-8 parts of water reducers, 2-8 parts of early strength agents, 2-8 parts of retarders and 100-200 parts of water. The radiation-proof concrete has the comprehensive advantages of no secondary radiation, large apparent density, strong gamma and neutron radiation resistance, high compressive strength, fire resistance, high temperature resistance, crack resistance and deformation resistance, good working performance, simple and convenient construction, low cost, environmental protection, innocuity and the like, and is suitable for occasions such as hospital engineering, military engineering, security engineering and the like which need to resist multiple radiation hazards and the like.

The invention relates to the technical field of water conservancy security engineering, in particular to an engineering abnormity early warning method and system based on intelligent visual analysis, and the system comprises a client platform, a data transmission platform, and an intelligent visual analysis platform. A client remotely accesses the intelligent visual analysis platform locally by adding a wireless local area network or a broadband; the data transmission platform realizes data transmission between the client and the intelligent visual analysis platform; the intelligent visual analysis platform comprises a monitoring camera, a server and a display, hydraulic engineering field monitoring videos are collected through the camera to serve as input of the system, the server processes images in video data, the processing comprises operations of target recognition, human body posture detection, abnormal behavior judgment and the like, and processing results are displayed on the display in real time. According to the invention, effective detection and early warning of possible safety accidents of workers in a water conservancy project site are realized, and the effect of preventing the safety accidents is achieved.

The invention discloses an installation method of an anti-jamming optical fiber perimeter guard detector, belonging to the technical field of security engineering. The method is characterized by comprising the following steps: a. selecting a spring for laying a fixed linear vibration detector, and installing along a perimeter fence wall of a plant area; b. using a sinusoidal way to lay the linearvibration detector by means of a spring bracket; c. determining the length of the linear vibration detector within per unit length by combining the requirement for the size of a defense area; d. testing whether the position of the defense area is coincided with the actual position or not according to the division of the defense area, and adjusting the sensitivity of the linear vibration detector by means of a software background. The installation method provided by the invention changes a sensing area with a function of segment detection into one surface from one point, thus effectively overcoming the environmental influence, and reducing the false alarm rate; system software is cooperatively used for adjusting the sensitivity of the individual defense area for different environments, so that the environmental interference resistance of the linear vibration detector can be enhanced, and the detection accuracy and accuracy are greatly improved.

The invention discloses a common highway maintenance engineering management system based on ArcGIS, including a security engineering hidden trouble detection library, wherein the security engineeringhidden trouble troubleshooting database comprises a file geographic database and a SQL database, the output end of the file geographic database is connected with the input end of the SQL database, theinput end of the file geographic database is connected with a MODIS preprocessing module, a lookup table generation module, an aerosol retrieval module, a PMIO / PM2.5 inversion module, a map documentoperation module, a GP general tool, and a map decoration output module, the input end of the SQL database is also connected with a GIS analysis module, and the input end of the GIS analysis module isconnected with an ArcGIS online map through WCF Ria service. The invention has reasonable design, realizes the integrated management of the maintenance engineering project, improves the level of highway maintenance management and analysis, has high accuracy, ensures the maintenance work to be carried out in place, and is worth popularizing.

The invention discloses a material transporting device capable of quickly discharging materials for security engineering construction, which comprises a box body, wherein a chute is formed in the lower surface of the inner wall of the box body; a sliding block is slidably connected in the chute; a triangular plate is fixedly connected to the upper surface of the sliding block; a threaded rod is fixedly connected to the left side surface of the triangular plate; a threaded cap is connected to the surface of the threaded rod in a threaded manner; a bearing sleeves the surface of the threaded cap. By arranging the driving device, the output shaft of the motor in the driving device can directly drive the threaded cap to rotate forward, the triangular plate pushes the supporting plate to rotatearound a pin shaft, so that materials above the supporting plate can be obliquely poured out from a discharge port; compared with the traditional material transporting vehicle, the material transporting vehicle can automatically unload the materials in the transporting vehicle without manual unloading of workers, so that the working strength of the workers is reduced, and convenience is brought to the workers in transporting the materials.

The invention discloses a method for setting a linkage type positioning optical-fibre boundary security system, and belongs to the technical field of security engineering. The method is characterizedby comprising the steps of: a, selecting an alarm detector; b, increasing the setting distance for a defence area, where persons frequently go in and out, and decreasing the setting distance for a safety protection blind area, where few persons go in and out; c, in combination with environmental requirements, selecting an alarm detector suitable for an environment; d, confirming boundary defence area division according to the selected alarm detector; e, adjusting the sensitivity of the alarm detector; f, determining the installation position of a boundary camera; and g, communicating an alarmsignal in the defence area to an intermediate system, sending a pre-set command of steering and focusing the called boundary camera through the intermediate system, and completing boundary security and video monitoring linkage. According to the method in the invention, due to the linkage mode, the disadvantage that single vision monitoring has a blind area can be avoided; the dynamic response of an alarm is effectively improved; and integrated application is improved.

An embodiment of the present invention is directed to quantifying the value of an individual log source sent to the SIEM. Through vendor-agnostic measurement, an algorithmic model utilized by a Log Quality Value (LQV) index enables security engineers and incident response (IR) teams to determine which logs provide the most value for security investigations. An embodiment of the present invention recognizes a positive correlation between the LQV index and critical logs used to investigate the attack. An embodiment of the present invention may be extended to evaluate the LQV algorithms against a more extensive dataset from live production environments and to further measure the tool effectiveness through periodically comparing the LQV index to logs used to detect security incidents.

The invention discloses a burglar alarm specially for security engineering, and relates to the field of security engineering. Thus, the problems in the prior art, that original burglar alarms can only emit alarm sound so that alarm functions are hard to achieve with no one around and common burglar alarms are easy to sabotage and poor in security effect, can be solved. An alarm shell is installed on the front end faces of alarm frames; induction radars are installed on the two sides of each alarm frames; a micro camera is installed at the upper part on the front end face of the alarm shell; a pick-up head is installed in front of the micro camera; the lower part of the pick-up head is provided with a display screen; one sides of the alarm frames are provided with a wire pipeline; steel rings are installed at the external of the wire pipeline; a loudspeaker is arranged under number buttons; the lower part of the loudspeaker is provided with LED signal lamps; springs are installed at the externals of connection shafts; and sensor modules are installed on the inner surfaces of the alarm frames.

The invention discloses an environmentally-friendly civil use security engineering monitoring device which comprises a monitoring rod, wherein a monitor is fixedly mounted on one side of the monitoring rod; a groove is formed in the top side of the monitoring rod; a fixing block is moveably mounted inside the groove; the top side of the fixing block extends outside the groove; a solar plate is fixedly mounted on the top side of the fixing block; a mounting groove formed in the monitoring rod is formed in one side far away from the monitor, of the groove; a sliding hole is formed in the inner side of one side close to the groove, of the mounting groove; the sliding hole communicates with the groove; a positioning rod is mounted inside the sliding hole in a sliding manner; two ends of the positioning rod extend outside the sliding hole; a positioning hole inside the groove is formed in the fixing block; a positioning groove is formed in the inner wall of one side far away from the sliding hole, of the groove; one end of the positioning rod penetrates through the positioning hole and extends into the positioning groove. The device is used conveniently by citizens and has the functionsof energy conservation and environmental protection, and meanwhile a solar panel can be conveniently and solidly mounted and dismounted.

The invention discloses a monitoring device for weak current security engineering of an intelligent building. The monitoring device comprises a monitoring device shell, a fixing sleeve is arranged onthe outer surface of the lower end of the monitoring device shell, a rotating hollow column is arranged in the middle of the fixing sleeve, a connecting piece is arranged at the lower end of the rotating hollow column, and a supporting rod is fixedly connected to the outer surface of one side of the connecting piece. According to the device, through arranging the data memory, the outer plate protection mechanism and the power supply mechanism, the support can be protected to a certain extent through the outer plate protection mechanism, preventing damage by external factors, therefore, the lens of the monitoring device falls off and is damaged. Secondly, when an external power supply has a fault, the power supply mechanism can provide emergency power supply for a period of time to preventstealing and other lawbreakers from using the characteristics to avoid monitoring. Finally, backup data storage is set in the monitoring device, so that the situation that the monitoring data cannot be queried after the data at the terminal is manually deleted is prevented, and a certain use prospect is achieved.

The invention relates to a vulnerability detection tool credibility verification method and system. The method comprises the following steps: a function point test request is sent to a test target based on a test end browser; the manual detection tool intercepts a data packet of the test request, and a security engineer performs manual detection according to a vulnerability detection strategy to obtain a first detection result of a corresponding function point; the automatic detection tool obtains a mirror image data packet of the test request, and performs vulnerability detection on a function point corresponding to the mirror image data packet according to a preset detection strategy to obtain a second detection result; the first detection result is compared with the second detection result; and the credibility of the function point vulnerability detection is determined by the automatic detection tool according to the comparison result. According to the method, the automatic vulnerability detection tool is verified based on the manual detection result, only a security engineer needs to confirm when necessary, excessive manual participation is not needed, the influence of human factors is small, and the verification efficiency is high.

The invention discloses a protection device with good stability for security engineering, and belongs to the technical field of security engineering. The protection device comprises a mounting frame, the upper surface of the mounting frame is fixedly connected with a shell, and the left and right side surfaces of the inner wall of the shell are fixedly connected with the left and right side surfaces of two vertical plates through sliding rods respectively; and the outer surface of each sliding rod is sleeved with a first spring and a first sliding block, and the front face of each first sliding block is movably connected with the bottom end of a first connecting rod through a pin shaft. According to the protection device with the good stability for the security engineering, by arranging the sliding rods, the first springs, the first sliding blocks, the first connecting rods, a transverse plate and a camera, when the camera is vibrated, the camera moves downwards, so that the camera drives the transverse plate to move downwards, a telescopic rod is shrunk, the transverse plate drives the first sliding blocks to move leftwards through the first connecting rods, the first springs are shrunk, the vibration amplitude of the camera is reduced, and the camera is not prone to being damaged due to vibration.

The invention provides an intelligent shielding door. The intelligent shielding door comprises an outer door plate, a door body and a door frame face plate, wherein the door body is arranged on the inner side of the outer door plate, and the door frame face plate is arranged around the door body; and the door body is provided with a lock rod mechanism which is provided with a lock cover and a gear, the door frame face plate is provided with an L-shaped groove, and the outer door plate is provided with a sliding block groove. The intelligent shielding door is simple in structure, wide in application and low in cost, and can replace building of shielding machine rooms in domestic county-level units, low-cost and fast completion of construction of electronic information security engineering is achieved, mounting is convenient, repair is easy, and the intelligent control effect is good.

The invention discloses a security engineering anti-theft device, and relates to the technical field of security engineering. The device comprises a supporting plate, the lower end of the supporting plate is in clamped connection with a control box, one side of the control box is in threaded connection with a buzzing alarm device, one side of the buzzing alarm device is provided with a wireless transmission device, the lower end of the control box is in clamped connection with a protective cover, and the interior of the protective cover is rotatably connected with a collection device. By arranging the independent wireless data transmission device, sensed data can be quickly uploaded to a civil air defense place, intermediate data transmission time is shortened, the data receiving speed of the civil air defense place is reduced, personnel scheduling at the civil air defense place is facilitated, and losses are reduced in time. According to the invention, a supporting plate is connected with a mounting position; and the device can be conveniently installed at a proper position through the supporting plate, the device and the supporting plate are fixed through vacuum suction cups and clamping blocks, and dismounting is convenient.

The invention discloses a monitoring support convenient to install for security engineering. The monitoring support comprises a fixing plate, wherein connecting pieces are fixedly connected to the twoends of the fixing plate, a containing groove is formed in the outer wall of one side of the fixing plate, T-shaped grooves are formed in the two ends of the inner wall, away from an opening, of thecontaining groove, and inserting covers are inserted into the inner walls of the two sides of the containing groove; and fixing blocks are fixedly connected to one ends of the outer walls of one sidesof the inserting covers, T-shaped rods are inserted into the two T-shaped grooves, connecting plates are fixedly connected to the ends, away from the fixing plate, of the two T-shaped rods, and connecting blocks are fixedly connected to the two ends of the outer walls of the sides, away from the T-shaped rods, of the connecting plates. The connecting pieces are fixed to the wall surface to fix the fixing plate, then the two T-shaped rods are aligned with the two T-shaped grooves to be inserted, and then the inserting covers are inserted along the containing groove through the fixing blocks sothat the monitoring support can be fixed to the fixing plate, and the tedious operation of screwing the monitoring support into the wall surface through bolts is avoided.

The invention discloses a civil security engineering monitoring device, relates to the field of security engineering, and aims to solve the problems of troublesome installation, inconvenience in adjustment, complex use and operation and narrow application range of current monitoring equipment in the prior art. A fixed seat is arranged at the upper end of the electric box; a first sleeve is mountedabove the fixed seat; a second sleeve is mounted above the first sleeve; a canopy is mounted above the second sleeve; two sides of the canopy are respectively provided with an inclined angle; a rotary table is arranged above the canopy; a camera is mounted above the rotary table; a camera is arranged on the front end surface of the camera; a rain baffle is installed outside the camera, a rotary knob is arranged above the rain baffle, a leather cushion block is arranged on the inner surface of the first sleeve, a through hole is formed in the first sleeve, a fastener is arranged on one side ofthe first sleeve, and a gear motor is installed in the rotary table.

The invention provides a service oriented architecture (SOA)-based radio frequency identification device (RFID) electromagnetic entrance guard integration control system, which is characterized by comprising a presentation layer, an application layer, a server and a resource layer, wherein the application layer comprises a remote control system, a plurality of front end control systems and a plurality of entrance guard execution systems which are mutually connected and interactively communicated through an SOA, and each front end control system acquires RFID information of people going in or out and sends the information to the remote control system to judge; the remote control system sends an instruction after comparing with a database according to the set logic, and the front end control system receives the instruction and then controls the entrance guard system to execute door opening, promote or alarm actions; and the resource layer comprises a data server system, an enterprise resource planning (ERP) system, a customer relationship management (CRM) system, a human resources (HR) system and a joint security information management system. The integrated control system provided by the invention is stable and efficient to operate, and can be widely suitable for various security engineering outfits.

The invention provides a high-safety intelligent security door for security engineering, and relates to the technical field of security doors, the high-safety intelligent security door comprises a frame plate, spring hinges are mounted on the frame plate, a door plate is mounted on the spring hinges through bolts, positioning wheels are mounted at the upper end and the lower end of the door plate, a lock body is mounted on the door plate, a handle is mounted on the lock body, and a fingerprint sensor is arranged on the handle. An elastic rod is mounted in the lock body and is inserted into a lock hole seat on the frame plate; when the door plate is closed, the spring hinge can rebound the door plate to prevent the door plate from being damaged by too large force during door closing, the positioning piece is mounted at the lower end of the door plate, the curved bar can be pressed on the ground under the action of the torsion spring to prevent the door plate from moving freely, and the curved bar is lifted upwards when the door plate needs to be rotated. The use is convenient; after the door plate is closed, under the action of the spiral spring, the two sets of rolling wheels can apply upward and downward force to the door plate, and the phenomenon that the door plate falls and deforms under the action of gravity is prevented.

The invention discloses an unmanned aerial vehicle forest fire prevention monitoring system based on remote monitoring, relates to intelligent security engineering, and solves the problems of incomplete coverage of forest mobile signals, unstable mobile communication and untimely data processing in the prior art. The unmanned aerial vehicle sends an attitude signal of the unmanned aerial vehicle and a collected video signal to the ground station, the ground station forwards the attitude signal to the track conversion device, and the video signal is forwarded to the video collection device; the video acquisition device converts the video signal into a video digital signal and transmits the video digital signal to the video server; the video server configures video live broadcast modes of HLS and RTMP; the flight path conversion device analyzes the attitude signal to obtain flight path data, and the data server receives the flight path data and adds the flight path data to a flight path record of the target task; real-time receiving and processing of data are realized, synchronous image processing is carried out through a fire hazard model based on a neural network, and real-time and reliable forest region information is provided for operators on duty in a forest region.

The invention discloses a wear-resistant mechanism of a combined wire harness for security engineering and a wear-resistant method of the wear-resistant mechanism, and relates to the technical field of security engineering, the wear-resistant mechanism comprises a cylindrical mounting shell, and mounting grooves are formed in the center positions of the top and the bottom of the inner wall of the mounting shell; a mounting groove is formed in the mounting shell, a sliding rod parallel to the mounting shell is fixedly mounted in the mounting groove, the circumferential outer wall of the sliding rod is sleeved with an annular sliding block, buffer springs are fixedly mounted on the two sides of the sliding block, and the ends, away from the sliding block, of the buffer springs are fixedly connected with the inner wall of the mounting groove; and the same second annular supporting shell is fixedly installed between the two sliding blocks, a plurality of second wire through holes which are evenly distributed are formed in one side of the second annular supporting shell, first installation grooves are formed in the inner walls of the tops and the bottoms of the second wire through holes correspondingly, and pressing mechanisms are installed in the first installation grooves. Abrasion of the wire harness can be reduced, and the service life of the wire harness is prolonged.

The invention discloses a burglar-proof window for security engineering. The window comprises an outer frame and a middle frame, the inner side of the outer frame is provided with two glass panels, the middle frame comprises a metal bracket, a beam and a side plate, the middle frame is installed on a bottom frame, two sets of sliding rails are arranged parallel to the bottom frame, the glass panels are slidably connected with the sliding rails, the beam, the metal bracket and the side plate are enclosed to form a cavity, when the glass panels slide, the glass panels are always located in the cavity, a plurality of telescopic rods are arranged on and matched with the bottom frame, each telescopic rod is provided with a base which is used for driving the rise and fall of the bottom frame, and a control button of the base is integrated in the middle of the middle frame. The burglar-proof window is different from a traditional burglar-proof window, the base and the telescopic rods are installed on the bottom frame, the window and a burglar-proof net are combined into one, there is no need for external burglar-proof window, the telescopic rods can rise and fall, when there is the need to open the window to dry clothes and a quilt cover, the window can be opened freely, and there is no inconvenient case caused by a too small opening.

The invention relates to an information security engineering server system, including an engineering server shell, a data interface, a CD interface, an insulation switch, a USB interface, an air cooling cooling window, a fan, a heat sink, a disassembling heat sink window, a heat sink baffle, a heat sink side plate, a heat sink motherboard, a three-phase electrical interface, a single electrical interface, a wire. The data interface, the CD interface, the insulation switch and the USB interface are embedded in the front end of the engineering server shell. When this security engineering serveris operational, the heat dissipation can be reliably and stably realized, and the silicone insulating grease can prevent electrical accidents and sharp temperature rise at the same time, thereby improving the system efficiency and stability, making the system run smoothly, effectively dissipating excessive heat, improving the system heat dissipation efficiency. At the same time, the components aremore convenient and efficient to replace, thereby reducing the damage rate when replacing components. And the server shell can prevent the external shocks, thereby ensuring information security at many aspects.