45results about How to "Eliminate security threats" patented technology

The invention provides an intelligent helmet and intelligent helmet system, wherein the intelligent helmet comprises a helmet body, a pressure sensor, a tether, a tension sensor, a detector, and an alarm device. The helmet body is used for protecting a head of an operator from the impact of an external object. The pressure sensor is arranged inside the helmet body and used for sensing the pressure of the head of the operator from the helmet body. The tether is connected to the helmet body and used for tying the jaws of operators to prevent the intelligent helmet from falling off. The tension sensor is connected to the tether and used for sensing and outputting the tension that the tether bears. The detector is connected to the pressure sensor and the tension sensor, and used for outputting an alarm command when detecting that the pressure is not zero and the tension is zero. The alarm device is connected to the detector and used for sending an alerting signal when the alarm command is received. The intelligent helmet and intelligent helmet system has the advantages of various functions, being safe and reliable, and being easy for the operator to use.

The invention provides an automatic catch vehicle shifter accidentally-engaging prevention method. According to the method, an R gear locking electromagnetic valve and a D gear locking electromagnetic valve are arranged in a transmission. An electromagnetic valve control system comprises a microprocessor, a brake switch, a gear sensor, a vehicle speed sensor, an engine running state sensor, a timer and a comparator, wherein the brake switch, the gear sensor, the vehicle speed sensor, the engine running state sensor, the timer and the comparator are connected with the microprocessor. The starting terminal and the output terminal of the timer are connected with different I / O ports of the microprocessor, the reset terminal of the timer is connected with the brake switch, the two input terminals of the comparator are connected with output signals of the vehicle speed sensor and vehicle speed threshold signals respectively, the output terminal of the comparator is connected with the I / O ports of the microprocessor, in the running process, the microprocessor controls the two electromagnetic valves to be opened or closed according to input signals of all the I / O ports, and therefore the accidentally-engaging prevention purpose is achieved. According to the automatic catch vehicle shifter accidentally-engaging prevention method, misoperation harmful to the transmission can be avoided, security threats of the accidentally-engaging operation of a shifter to the transmission are completely eliminated, and normal running of a vehicle is guaranteed.

The invention discloses an intelligent anti-islanding device and an automatic islanding detecting and destroying method. The intelligent anti-islanding device is characterized by comprising an islanding detecting module, an islanding recognizing module, an islanding destroying module, an islanding alarm module and an islanding transmitting module, wherein the islanding detecting module is connected with the islanding recognizing module, the islanding recognizing module is connected with the islanding destroying module and the islanding alarm module, and the islanding transmitting module is connected with the islanding detecting module, the islanding recognizing module, the islanding destroying module and the islanding alarm module. The intelligent anti-islanding device has the advantages that by detecting and recognizing unintentional islanding automatically by the islanding detecting module, when islanding occurs in a power distribution line of a distributed photovoltaic power generation system, the intelligent anti-islanding device is capable of automatically detecting and recognizing unintentional islanding operation according to acquired line information, alarming automatically to inform a management system timely and controlling the anti-islanding device to switch automatically through a DSP (digital signal processor) controller to switch off the unintentional islanding so as to prevent potential safety hazard caused by manual operation.

The invention relates to an IC (Integrate Circuit) card access terminal which adopts a commercial cipher and is provided with a commercial SM (Smart Media)7 / SM1 cipher module. The IC card access terminal comprises an antenna, an RF (Radio-Frequency) interface, an MCU (Microprogrammed Control Unit), a cipher module with a commercial cipher algorithm, an access executing mechanism and a data interface connected with a background monitoring system, wherein the MCU is respectively connected with the RF interface, the cipher module, the access executing mechanism and the data interface for data interaction, and the RF interface is connected with the antenna and is in charge for RF communication between the MCU and the IC card. An operation method of the invention comprises the following steps of: (1) swiping a card on the induction antenna of the access terminal by a user; (2) carrying out SA (Social Accountability) authentification on the access terminal and the IC card under the matched control of the MCU and the SM7 / SM1 cipher module; (3) carrying out SB authentification; (4) authenticating user release information; (5) controlling access; and (6) reporting a legal access accident to the background monitoring system. The invention has a commercial cipher secured authentification mechanism and effectively ensures the security of important access.

An embodiment of the invention discloses a method and a device for preventing propagation of a malicious file. According to the method, after a proxy server receives request information which is transmitted from a terminal for uploading an objective file to the server or downloading the objective file from the server is received, the proxy server acquires the objective file. The objective file is checked, thereby determining safety of the objective file. Only when the objective file does not carry a malicious virus, the objective file is transmitted to the server or transmitted to the terminal according to the request information. When the objective file is the malicious file, the objective file is moved to a virus isolating area. The objective file cannot be operated in the virus isolating area and cannot be uploaded to the server or transmitted to the terminal, thereby preventing propagation of the malicious file, eliminating a safety hazard of the malicious file to the server and the terminal, and furthermore preventing attack of the malicious file to the proxy server.

A squirting toy is comprised of a cylindrical housing and a piston that slides within to force water into or out of the housing via a hole therein. The housing is encased within a shell creating a water impervious volume sufficient for the toy to float in water. The shell is soft, so that the gun is not a safety hazard when left floating in a swimming pool. The squirting toy can further include bellows that can provide safety benefits as well as other benefits.

Provided are an apparatus and method using spatial and temporal quarantine expansion to prevent important information from being leaked due to attacks such as viruses, hacking, and the like. The apparatus includes a state change unit for changing a state of at least one of a memory, a register, and a port in the computer system; a state calculation unit for calculating information on the changed state of the computer system; a security-threat-element elimination unit for eliminating security threat elements from the computer system; a communication unit for transmitting the state information calculated by the state calculation unit to the quarantine station, or receiving control information for controlling the computer system based on the state information, from the quarantine station; and a security execution unit for receiving security information from the quarantine station to execute a specific program when the computer system is faultless, wherein the state information and the control information are transmitted or received until the computer system is faultless repeatedly.

The invention relates to the field of chaotic signals, in particular to a method for generating chaotic light on the basis of a feedback interference principle. The method for generating chaotic lighton the basis of the feedback interference principle is different from the traditional methods for generating chaotic light through disturbance manners such as light injection, light feedback, photoelectric feedback and the like by utilizing semiconductor optical devices, is a novel method for generating chaotic light, and is capable of effectively eliminating the security threat, for the chaoticlight systems, of the traditional disturbance manners and then greatly improving the disturbance rejection ability of the chaotic systems. The chaotic light is used as a phase chaotic signal and provides possibility and basis for realizing high-speed acquisition and quantification processes in the later period. Moreover, the method is capable of generating wide-frequency spectrum and high-entropyvalue chaotic light signals through debugging and optimization, and has significance in the fields of high-speed true random secret keys, chaotic light optical time domain reflectometers, chaotic ultra-wideband pulse signal generation and coherent length-tunable light sources.

The invention relates to a method for encrypting communication by adopting a dynamic vector matrix. The method comprises the following steps: starting to develop a password, transmitting the password and two sets of keys by a third part that can not be decoded, verifying the password by the keys, examining whether a user is legal or not, generating an initial matrix according to the password, sending a message, altering the dynamic vector matrix after meeting transformation conditions and keeping on sending, receiving the message, reading cryptograph and keeping on receiving after altering the matrix according to the password, completing communication, taking the last matrix as an initial matrix for the next time, and finishing. The method is simple and practical and has the advantages ofconvenient operation, strong encryption and high efficiency. The method can be used by many users with own communication rules which can not be known by each other or be decoded.

The invention belongs to a metal material chemical component detecting technology and relates to an improvement to a method for measuring lead element content in an aluminum casting alloy LD7-1. The method is characterized in that the steps for measuring the lead content are as follows: preparing a reagent; preparing a sample solution; preparing lead standard solution diluents of different concentrations; measuring an absorbance value of the lead standard solution diluents; drawing a working curve of lead content; measuring the absorbance value of the sample solution; and determining the lead content in the sample solution. According to the method for measuring lead content in an aluminum casting alloy LD7-1, pure aluminum is not used as a blank solution, the pure aluminum solution needs to be added to series of standard solutions, so that the measuring efficiency is improved; and moreover, environment pollution is avoided, and security threat to measuring personnel is eliminated.

The invention is suitable for the information safety technology field and provides the vehicle positioning system of a parking lot and a vehicle positioning method. The system comprises a positioningbase station and a server in the parking lot. The positioning base station sends a positioning data packet to the server. The server generates the second hashed value of second integration informationaccording to a preset MD5 function and the second integration information and detects whether the second hashed value is the same with a first hashed value. If the second hashed value is not the samewith the first hashed value, the positioning data packet is determined to be tampered. The positioning data packet is marked as the tampered positioning data packet. A preset positioning reliabilitygeneration model and the number of the tampered positioning data packets are used to generate the current positioning reliability of the positioning base station. Whether the current positioning reliability is less than a preset threshold is determined. If the current positioning reliability is less than the preset threshold, the positioning base station is determined to be the malicious positioning base station, and the positioning data packet sent by the malicious positioning base station is shielded. In the invention, the malicious positioning base station can be prevented from bringing a safety threat to vehicle positioning so that the safety of the vehicle positioning is increased.

The invention discloses a power-driven operation device for a miniature circuit breaker. The power-driven operation device comprises a shell, a round disc, a hook and a driving lever, wherein a motor is arranged in the shell, an output shaft of the motor is provided with a worm, and the round disc is arranged in the shell, the outer circumference of the round disc is provided with a groove, one side of the round disc is provided with a driving rod gear, and the other side of the round disc is provided with a driving rod round disc; the driving rod is arranged on the driving rod round disc through a connecting rod, and a gear set is arranged between the driving rod gear and the worm so as to transmit the power of the motor to the driving rod gear; the shell is provided with a sliding button connected with the hook; and the hook can be clamped in the groove on the round disc by driving the sliding button, and meanwhile, the end part of the hook is capable of withstanding the driving rod round disc to prevent the driving rod round disc from rotating. The power-driven operation device disclosed by the invention is simple in structure, reliable, low in cost, high in security and capable of locking the driving rod.

The invention discloses a foot bath tub provided with a drainer with a function of tearing out a film bag and a use method of the foot bath tub. The foot bath tub comprises a tub body, the drainer, the film bag and a tearing-out device. The tub body is provided with a containing cavity and a water outlet; the drainer comprises a water outlet base, a piston and an opening and closing structure, wherein the water outlet base is installed at the bottom of the tub body, the piston is installed in the water outlet base, and the opening and closing structure controls the piston to block up or unblock the water outlet; the film bag is arranged on the tub body in a sleeved mode and can be fixed through a fixing part, and the fixing part presses the film bag to be clamped in the water outlet in an embedded mode, so that the film bag partially penetrates through the water outlet and protrudes in the water outlet base in the state that the piston does not block up the water outlet; the tearing-out device comprises a pin-jointed joint, a first tooth rod, a second tooth rod and a drive rod, wherein the pin-jointed joint is installed in the water outlet base, the first tooth rod and the second tooth rod are arranged at the front end of the pin-jointed joint and can open and clamp mutually to tear out the film bag protruding in the water outlet base, and the drive rod is used for driving the first tooth rod and the second tooth rod. The foot bath tub has the advantages of being capable of ensuring cleanliness of the tub body and completely eradicating bacterium infection, convenient to use and safe.

The present invention provides a simulation detection system of an electrical vehicle wading condition and a simulation detection method applying the same. The simulation detection system of the electrical vehicle wading condition comprises: a simulation chamber having an entrance and an exit for driving into and out a test car; a reservoir disposed in the simulation chamber, the test car being located in the reservoir when detecting the test car; a vehicle binding mechanism configured to connect with the test car and lift the driving wheels of the test car off the ground; and a controller configured to electrically connected to the test car and monitor the driving condition when the test car is in the wading condition. The simulation detection system of an electrical vehicle wading condition may solve the problem of great investment of an electrical vehicle simulation test in the prior art.

The invention discloses a powder solid sampler. The sampler comprises a frame type inner chamber, an intermediate chamber and an outer chamber which are arranged in a sequential embedding manner from inside to outside, wherein a longitudinal opening is formed in one sides surface of the outer chamber and close to the top, and a handle of the intermediate chamber is clamped in the longitudinal opening; a space for vertical movement of the intermediate chamber is reserved between the inner chamber and the outer chamber; an opening is formed in the bottom of the outer chamber, and a sampling device is movably arranged at the bottom of the outer chamber; a handle is arranged on one side of the top of the intermediate chamber, a bulldozer is arranged on one side of the intermediate chamber, and an ejector is arranged on the other side of the intermediate chamber; the ejector comprises two parts which are disconnected and correspond up and down, and the maximal gap between the two parts is the same as the height of the sampling device; horizontal lugs are correspondingly arranged on the inner side of the ejector and the inner side of the bulldozer; springs connected with the outer side of the inner chamber are correspondingly arranged on the inner side of the ejector and the inner side of the setting device; the outer side surface of the inner chamber is provided with a longitudinal groove and a spring connected with the intermediate chamber from top to bottom; and a display window with a digital operation knob, a spiral column and a piston adjusting rod are respectively arranged inside the inner chamber from top to bottom and are matched with one another.

The invention discloses an integrated automotive seat headrest with an air purification function. The integrated automotive seat headrest comprises a headrest foaming and face cover assembly, a headrest rod assembly, a headrest base and a purifier assembly. The headrest rod assembly is mounted on a seat; the headrest base is mounted on the headrest rod assembly; the purifier assembly is mounted onthe headrest base and the headrest rod assembly; the headrest foaming and face cover assembly covers the whole headrest base, the whole purifier assembly and the upper portion of the headrest rod assembly; and the purifier assembly is used for circularly purifying air in an automobile. The integrated automotive seat headrest has the air purification function, and is simple in structure, capable of reasonably utilizing space in the automobile and safe and reliable.

The invention discloses an open caisson non-drainage sinking construction system and a construction method thereof. The open caisson non-drainage sinking construction system and the construction method aim to solve the problems that in the prior art, in the process of sinking a large open caisson under the conditions of poor soil quality and high water content, accidents that the open caisson inclines or sinks suddenly, and water and sand gushing occurs at the bottom of the caisson are prone to occurrence. The construction system comprises a submersible pump, a water gun nozzle, a hoisting connecting piece, a high-pressure water inlet pump, a water inlet pipe, a mud discharging pipe, an automobile crane, a traction rope and a submersible pump main body. The construction method comprises the following steps that the submersible pump is assembled and connected with the high-pressure water inlet pump and the mud discharging pipe correspondingly, the two water pumps are started so as to rush, dig and draw mud, the high-pressure water inlet pump is turned off, the submersible pump draws water to enable the water level in the open caisson to descend so as to realize slow sinking of the open caisson, the above process is repeated until the open caisson sinks to the designed elevation, after the open caisson is in place and stable, a coarse gravel cushion layer is arranged at the bottom, and concrete is poured through a guide pipe for bottom sealing. According to the open caisson non-drainage sinking construction system and the construction method thereof, inclination or sudden sinking in the sinking construction process of the open caisson can be effectively avoided, potential safety hazards of water and sand gushing at the bottom of the caisson also can be effectively eliminated, and sinking construction efficiency of the open caisson can be effectively improved.

The invention relates to an automatic test device of zinc oxide arrester with voltage of 35kV and less than 35kV and an operation method thereof. The automatic test device comprises a handheld controller and a high voltage test bench. The high voltage test bench comprises a voltage conversion module, a control module and a communication module, which are successively connected. The handheld controller is connected with the high voltage test bench via a fiber. A photoelectric converter 1 is arranged in the handheld controller. A photoelectric controller 2 is arranged in the communication module. According to the invention, the high voltage test bench is connected with the handheld controller via the fiber and a tester is not in electric connection with the high voltage test bench, so security threats to the tester posed by induced electricity and electricity leakage are eliminated; safety of tests is improved; optical signals are free from effects of electromagnetic environment of a test site; and data is transmitted more precisely and stably.

The invention provides a hook retracting device of a lorry-mounted crane and the lorry-mounted crane, and relates to the technical field of cranes. The hook retracting device of the lorry-mounted crane comprises a rotating support. The rotating support is rotatably connected to the arm head of the lorry-mounted crane. When the lifting hook assembly of the lorry-mounted crane is in a suspended state, the rotating support is located above the lifting hook assembly and is arranged in the vertical direction, and the rotating axis of the rotating support is offset relative to the center of the lifting hook assembly; and when the lifting hook of the lifting hook assembly is folded, the rotating support can abut against the installation frame of the lifting hook assembly. According to the hook retracting device of the lorry-mounted crane, the lifting hook and the steel wire rope can be retracted so that the swinging of the lifting hook or the steel wire rope is avoided, and the safety threatto the vehicle, the carried goods and the personnel caused by the swinging of the lifting hook or the steel wire rope is eliminated; besides, the lifting hook and the steel wire rope are retracted sothat visual disturbance and driving interference of the driver in the transportation process can be reduced, the driver can drive the vehicle conveniently and the driving safety can be improved.

The invention relates to a splashing-preventing hood for a frying machine, which is buckled on an open section of the traditional frying machine and made of pollution-free transparent materials. The splashing-preventing hood is shaped as a high-arch groove with a downward opening, one end of the splashing-preventing hood is higher than the other end, and a window is arranged at the local part of one side surface of the splashing-preventing hood and provided with a transparent movable cover plate. The invention fully eliminates the pollution caused by lampblack dispersing and high-temperature oil splashing and the safety threats on an operator, and is convenient for treating the abnormal condition in a frying groove by the operator.

The invention relates to a virtual machine control system based on a cloud computing platform and a control method of the virtual machine control system. The virtual machine control system comprises a virtual cluster node and a center control node which are mutually connected on the basis of the cloud computing platform, wherein the virtual cluster node comprises a three-layer structure; the second layer of the three-layer structure comprises a virtual machine and a virtual machine operating system; the virtual machine operating system comprises a main virtual machine module and a monitor for in-band monitoring; a first layer of the three-layer structure is positioned between the second layer and the virtual cluster node; the first layer of the three-layer structure comprises a virtual machine monitor, and a third layer of the three-layer structure is arranged on the second layer; the third layer of the three-layer structure comprises an application module and a local control engine; a center control engine is arranged in the center control node. According to the virtual machine control system and the control method disclosed by the invention, the defect that the using efficiency of a virtual cluster is severely restricted due to the problem in the prior art in terms of safety protection and resource balance can be effectively avoided in combination with the control method.

The invention provides an automatic catch vehicle shifter accidentally-engaging prevention method. According to the method, an R gear locking electromagnetic valve and a D gear locking electromagnetic valve are arranged in a transmission. An electromagnetic valve control system comprises a microprocessor, a brake switch, a gear sensor, a vehicle speed sensor, an engine running state sensor, a timer and a comparator, wherein the brake switch, the gear sensor, the vehicle speed sensor, the engine running state sensor, the timer and the comparator are connected with the microprocessor. The starting terminal and the output terminal of the timer are connected with different I / O ports of the microprocessor, the reset terminal of the timer is connected with the brake switch, the two input terminals of the comparator are connected with output signals of the vehicle speed sensor and vehicle speed threshold signals respectively, the output terminal of the comparator is connected with the I / O ports of the microprocessor, in the running process, the microprocessor controls the two electromagnetic valves to be opened or closed according to input signals of all the I / O ports, and therefore the accidentally-engaging prevention purpose is achieved. According to the automatic catch vehicle shifter accidentally-engaging prevention method, misoperation harmful to the transmission can be avoided, security threats of the accidentally-engaging operation of a shifter to the transmission are completely eliminated, and normal running of a vehicle is guaranteed.

The invention provides a closed-loop test method for a virtual terminal in an intelligent substation. By introducing an SCD file, the input configuration of a GOOSE virtual terminal of a protection / monitoring device is completed and outputting is conducted; meanwhile, by means of an MMS message triggered by change of input data of the virtual terminal of the protection / monitoring device, station-control-layer MMS information corresponding to the GOOSE virtual terminal is obtained, and a closed-loop test is formed. The method can effectively verify the consistency of a static model and a dynamic model of the protection / monitoring device, and can serve as an effective means for judgment of the consistency of the configuration of the SCD file of the device and a running configuration. Potential threats that safe substation operation is likely to be affected by inconsistency of the configuration of the SCD file of an IED device of the intelligent substation and the running configurationare avoided.

The invention relates to the field of chaotic signals, in particular to a method for generating chaotic light based on the principle of feedback interference. The present invention proposes a method for generating chaotic light based on the principle of feedback interference. This method is different from the traditional method of generating chaotic light by using semiconductor optical devices through optical injection, optical feedback, and photoelectric feedback. It is a new method for generating chaotic light. It can effectively eliminate the security threat to the chaotic optical system caused by the traditional disturbance method, and greatly improve the anti-disturbance ability of the chaotic system. As a phase chaotic signal, the chaotic light provides the possibility and basis for the later realization of high-speed acquisition and quantification process. Moreover, the present invention can generate wide-spectrum, high-entropy chaotic optical signals through debugging and optimization, and can be used in the fields of high-speed true random keys, chaotic optical time domain reflectometers, chaotic ultra-wideband pulse signal generation, and tunable coherence length light sources. is of great significance.

The invention relates to a method for encrypting communication by adopting a dynamic vector matrix. The method comprises the following steps: starting to develop a password, transmitting the password and two sets of keys by a third part that can not be decoded, verifying the password by the keys, examining whether a user is legal or not, generating an initial matrix according to the password, sending a message, altering the dynamic vector matrix after meeting transformation conditions and keeping on sending, receiving the message, reading cryptograph and keeping on receiving after altering the matrix according to the password, completing communication, taking the last matrix as an initial matrix for the next time, and finishing. The method is simple and practical and has the advantages ofconvenient operation, strong encryption and high efficiency. The method can be used by many users with own communication rules which can not be known by each other or be decoded.

A computer-implemented method comprising: obtaining a first hyperlink associated with a first web resource accessible via a client terminal; converting one or more portions of the first hyperlink into a query comprising at least A search term derived in part from portions of the first hyperlink; submitting a query to a search engine configured to search for information via the Internet; receiving search results associated with the query from the search engine, the search results including one or more two hyperlinks; determining whether to replace the first hyperlink with a replacement hyperlink selected from the second hyperlinks based at least in part on the results of an analysis of the similarity of the first hyperlink compared to each second hyperlink link; and, based on the determination, causing the client terminal to access a first web resource associated with the first hyperlink or a second web resource associated with the replacement hyperlink.

The invention provides a hook receiving device for a truck-mounted crane and the truck-mounted crane, which relate to the technical field of cranes. Wherein, the hook receiving device of the truck-mounted crane includes a rotating bracket, which is rotatably connected to the arm head of the truck-mounted crane. When the hook assembly of the truck-mounted crane is in a suspended state, the rotating bracket is located above the hook assembly and along the In the vertical direction, the rotation axis of the rotating bracket is offset relative to the center of the hook assembly; when the hook of the hook assembly is retracted, the rotating bracket can abut against the mounting frame of the hook assembly. The hook receiving device of the truck-mounted crane can retract both the hook and the wire rope, thereby avoiding the swing of the hook or the wire rope, thereby eliminating the damage to the vehicle, the cargo and the personnel caused by the swing of the hook or the wire rope. safety threats; in addition, retracting the hook and wire rope also reduces the driver's visual obstruction and driving interference during transportation, thereby facilitating the driver to drive the vehicle and improving driving safety.

The invention discloses a hardware Trojan horse detection method based on LUT feature extraction and machine learning. The hardware Trojan horse detection method comprises the following steps: inputting an integrated circuit design embedded with a hardware Trojan horse as a training set; designing and synthesizing the training integrated circuit into a field programmable gate array netlist; hardware Trojan horse feature extraction is carried out on the FPGA netlist, and generated training quantization feature values are stored; training a machine learning classifier by using the training quantization feature value to generate an optimal hardware Trojan classifier; inputting a to-be-detected integrated circuit design; designing and synthesizing a to-be-detected integrated circuit into a to-be-detected FPGA netlist; hardware Trojan horse feature extraction is carried out on the FPGA netlist to be measured, and generated feature values to be measured are stored; and inputting a to-be-measured characteristic value into the trained hardware Trojan classifier, and dividing the to-be-detected integrated circuit into Trojan nodes and normal nodes, thereby realizing Trojan detection. According to the method, hardware Trojan horse detection activated based on specific conditions can be realized, and hardware Trojan horse potential safety hazards can be detected in the early stage of integrated circuit design.