75results about How to "Avoid security impact" patented technology

The invention discloses a method and system for the security protection of an industrial control network. According to the method, the industrial control network is divided into at least two sub-network layers, wherein a firewall is arranged between the industrial control network and external networks, and a security protection module which controls data transmission among the sub-network layers is arranged in the industrial control network. The method comprises the following steps that the security protection module intercepts data messages transmitted among the sub-network layers; the security protection module judges whether operations requested by the data messages meet preset conditions or not; when judging that the operations do not meet the preset conditions, the security protection module interrupts the transmission of the data messages; when judging that the operations meet the preset conditions, the security protection module removes data with potential security risks from the data messages, and then transmits the data messages, from which the data with potential security risks are removed, to destination sub-network layers corresponding to the data messages. Through the method, the security and reliability of the industrial control network can be improved.

The invention provides an intelligent multiparameter-monitoring buoy device. The intelligent multiparameter-monitoring buoy device comprises buoy equipment, water quality monitoring equipment, communication equipment and power supplying equipment, wherein the buoy equipment is used for enabling the whole buoy device to float on the surface of water, the water quality monitoring equipment is used for monitoring water quality, the communication equipment is used for realizing data transmission between the water quality monitoring equipment and a shore-based main station side and positioning the water quality monitoring equipment and the shore-based main station side, and the power supplying equipment is used for supplying power. According to the intelligent multiparameter-monitoring buoy device, by adopting an embedded-type low-power-consumption design, the integral volume of an instrument compartment and a buoy is reduced; by adopting an intelligent operation mode, the timed, continuous or specified monitoring on water quality is realized; by adopting intelligent electrical quantity management, the effective operation of a solar power supplying system is realized; by adopting a multi-mode mutually-standby communication mode, the real-time property of data is improved, and the risk of out-of-touch is lowered; a sensor with a self-cleaning device is adopted, and intelligent analytical judgment is carried out by integrating a variety of information, so that the quantity of field maintenance is minimized; and the buoy is subjected to integrated protection in multiple manners such as electricity, sound, light and the like, so that the influence on the safety of the buoy caused by marine environments, fishery activities and the like is lowered and prevented.

The invention discloses a direct-current catenary de-icing method of a high-speed electrified railway. The direct-current catenary de-icing method comprises direct-current catenary de-icing equipment input and quit processes. The input process comprises the following steps that: when a direct-current de-icing system monitors the icing state of a catenary and puts forward a de-icing demand, corresponding feeder switches and catenary switches are switched off by an electric power control center in a long distance, a substation is switched to be in a direct-current catenary de-icing operation state from a normal traction power supply state, and corresponding direct-current de-icing on-off switches, catenary switches and feeder switches in the substation are closed to input direct-current de-icing equipment. The quit process comprises the following steps that: the de-icing equipment is shut down, the corresponding direct-current de-icing on-off switches, feeder switches and catenary switches are disconnected to break the disconnection between the de-icing equipment and the substation and the catenary, and the corresponding feeder switches and catenary switches are closed to switch the feeder switches to be in a traction power supply state of an electric locomotive. According to the direct-current catenary de-icing method, the concentration and systematization of functions are realized, the operation and maintenance are safe, convenient and efficient, and the installation ways are flexible and changeable.

The present invention discloses a graded group key management method based on line geometry, which comprises the following steps: step 1. a central controller selects a finite field F, a mapping F and a constant for the use of groups and a N-dimension private vector for each sub-group; step 2. the central controller selects a mapping parameter r and maps the private vectors into a group of new vectors in a vector space; step 3. the central controller selects a sub-group key for each sub-group, constructs n linear equations and solves the linear equations, wherein the solutions of the linear equations are public vectors and n groups of public vectors form a public matrix; and the central controller further sends the public matrix and the mapping parameter r to all sub-group controllers via a public channel broadcast or multicast; and step 4. the sub-group controllers calculate confidential vector thereof and carry out a linear conversion on the confidential vector and the public matrix to obtain a group of key vectors. The graded group key management method is simple and flexible and is capable of avoiding violent attacks.

The invention discloses an early warning method and system for barriers. The method comprises the steps that barrier information on a flight route of an airplane is acquired; the barrier information comprises information of types of the barriers, the outlines of the barriers, the heights of the barriers and the positions of the barriers; dangerous space zones of the barriers are determined according to the barrier information; the flight states of the airplane is acquired; the flight states of the airplane comprise information of the speed of the airplane, the height of the airplane and the position of the airplane; the time needed for the airplane to enter the dangerous space zones of the barriers is calculated according to the flight states of the airplane and the dangerous space zones of the barriers, and endangered time is obtained; when the endangered time is smaller than a set threshold value, and an alarm signal is sent out. According to the method and the system, when the airplane gets close to the barriers, the alarm signal is sent out, a pilot or a control center is reminded to make reaction in time, and safe influences of the barriers on low-altitude flight of the airplane are avoided.

The invention discloses a high-safety new energy automobile battery module placement mechanism. The mechanism comprises a placement frame, a buffer mechanism is arranged at the bottom of an inner cavity of the placement frame, a placement base is bolted to the top of the buffer mechanism, the two sides of the placement base are slidably connected with the two sides of the inner cavity of the placement frame correspondingly, mounting bases are bolted to the front face and the back face of the center of the top of the right side of the placement base, a through groove used in cooperation with the mounting bases is formed in the center of the right side of the placement frame, and a supporting plate is bolted to the bottom of an inner cavity of the placement base. Through cooperation of a fixing frame, a sliding rod, a first spring, movable rods, a connecting rods, first sliding grooves, first sliding blocks and second springs, a user can conveniently utilize elastic resilience of the first spring and the second springs to quickly offset vibration borne by a battery module in the placement base, the safety of the placement mechanism is improved, and the problem that the battery module is damaged by excessive external vibration and a new energy automobile is stopped suddenly and rolls over is avoided.

An air conditioner condensate split flow box includes: the drain pipe, the water inlet, the water pipe clip, the water tank, the viscose cushion, the split flow nozzle, the outgate, the diversion launder and the defrosting pan. Its characteristic are: there sets the viscose cushion at the bottom or on side of the water tank, it makes the water tank fix on the air conditioner outdoor machine , the radiator's cover or side cover through the viscose cushion, upside of the water tank there sets the water inlet and the water pipe clip, the condensate water in the defrosting pan enters the water tank which is inducted by the drain pipe, the water inlet and the water pipe clip, then it equally distributes to outside of water tank through the split flow nozzle which is set at the bottom of water tank's one side, the condensate water's drop direction changes because of the suction of fan, then it adsorbs on the carbon fin, it makes use of the theory that the condensate water volatilizes and radiates heat when happens to heat or wind to avoid the effect that the condensate water's directly discharge brings to the ground, the metope and the passerby, it raises the fin efficiency, lowers the energy consumption and prolongs the compressor's life-span. We can choose water tank's capacity, size and the amounts of the split flow nozzle according to the air conditioner's power. We also can choose water tank material according to the customer's demand.

The invention provides a method for enhancing MQTT protocol identity authentication by using a symmetric cryptographic technology, which comprises the following steps of: performing first identity authentication from an Internet of Things terminal to an Internet of Things platform: charging a quantum key into a quantum safety chip by a quantum key charging machine, and recording and storing a corresponding relationship between the charging safety chip and the key, the Internet of Things terminal calls a quantum key in a chip to construct an identity authentication request message to the Internet of Things platform, the Internet of Things platform obtains symmetry, carries out decryption and identity comparison, generates a login token after successful authentication, and returns a verification message to the terminal; second identity authentication: the Internet of Things platform applies for a key according to the terminal ID and constructs an identity authentication request message to the terminal; and the terminal decrypts and verifies the platform ID and the login token. The invention further provides a system and equipment corresponding to the method. The invention has the advantages that identity authentication is performed by using a key set symmetric algorithm in the quantum safety chip, one key is pad at a time, a third party does not need to issue and authenticate a digital certificate. Therefore, the safety is improved.

The invention discloses an intelligent, safe, multi-functional electric rice cooker. The electric rice cooker includes a shell, an electric heating plate, an inner pot, a temperature sensor, a microprocessor, a key adjusting module, a timer, a pot cover, a vent pipe, a pressure gauge, a safety valve, an ultraviolet sterilizing lamp, a suction disk and a water collecting box. A power line interfaceis embedded in the bottom of the shell, the inner pot is arranged in the shell, the bottom surface of the inner pot is provided with the electric heating plate, one side of the electric heating plateis provided with the temperature sensor, the outer wall of the shell is provided with the key adjusting module and the timer, and the inner wall of the shell is provided with the ultraviolet sterilizing lamp; the shell is provided with a radio transmission module, the shell is internally provided with the microprocessor, the pot cover is arranged on the shell, the vent pipe and the safety valve are arranged on the pot cover, the pressure gauge is installed on the pot cover, the upper surface of the pot cover is provided with a groove, one end of the groove is connected with the vent pipe, andthe other end of the groove is provided with the water collecting box. The safety of the electric rice cooker is improved, the health and safety of food are ensured, the potential safety hazard is avoided, the structure is simple, and the electric rice cooker is convenient to use and popularize.

The invention discloses a high-safety removable storage system and method. The system comprises an upper computer, a removable storage device and a mobile terminal. The removable storage device comprises a safety master control chip, a FlASH storage chip used for storing file data, a power source management unit, and a power source module used for providing a power source. The safety master control chip is connected with the FlASH storage chip used for storing the file data, the power source management unit, the upper computer, the mobile terminal and an external device, and the power source management unit is connected with the power source module. By means of the system and method, requirements of the removable storage device for safety and confidentiality can be effectively met.

The invention relates to the field of data information security, in particular to an RFID (radio frequency identification) digital information read-write security control method, an RFID digital information read-write security control device and a reader-writer. The method comprises the following steps of acquiring a requested operation range, a requested operation right, an allowable operation range and an allowable operation right, judging whether the requested operation range exceeds the allowable operation range or not, denying the reading-writing of a tag if the requested operation range exceeds the allowable operation range, otherwise judging whether the requested operation right exceeds the allowable operation right or not, denying the reading-writing of the tag if the requested operation right exceeds the allowable operation right, otherwise allowing the reading-writing of the tag. According to the method, the device and the reader-writer, two verification stages of operation range verification and operation right verification are set, and only a user passing the two stages of verification can operate the tag, so that the requested operation range and the requested operation right are prevented from exceeding the allowable operation range and the allowable operation right, and the security of an operation request is ensured; an access password is further generated, is transmitted to the tag together with the requested operation range and the requested operation right, and is verified, so that the influence of an access password verification-free operation behavior on the security is avoided.

The invention provides a method for enhancing MQTT protocol transmission security by using a symmetric cryptographic technology, and the method comprises the steps: carrying out the encryption and decryption of data: carrying out the encryption and decryption from an Internet of Things terminal to an Internet of Things platform, and carrying out the encryption and decryption from the Internet of Things platform to the Internet of Things terminal; in encryption and decryption, employing a quantum key filling machine for filling a symmetric key of a quantum security chip arranged in or outside the Internet of Things terminal and a key stored in a quantum exchange cipher machine, and enabling the quantum exchange cipher machine to record and store a corresponding relation between the filled quantum security chip and the key. The method has the advantages that the quantum key is used for protecting uplink and downlink information of the MQTT, and the problems that the key is reused in the transmission process of uplink and downlink information of the Internet of Things terminal, and the security is reduced along with use are solved by using a quantum security chip and a symmetric cryptographic technology.

The invention discloses a hoisting tool for a marine low-speed diesel engine electric vibration compensator. The hoisting tool is in a semi-open door frame shape. The hoisting tool is formed by sequentially welding an upper cross beam, a stand column and a lower cross beam. The upper cross beam is provided with working hoisting holes and a hosting tool hoisting hole. The lower cross beam is provided with a bolt hole used for being connected with the electric vibration compensator. A space defined by the upper cross beam, the lower cross beam and the stand column contains an exhaust collectingpipe of a marine low-speed diesel engine. In the hosting mounting process, the hoisting tool is transversely inserted therein, so that the exhaust collecting pipe is at the middle neutral position ofthe hoisting tool. By means of the hoisting tool, the hosting operation, dismounting operation and mounting operation of the electric vibration compensator can be free of influence of the mounting state of the exhaust collecting pipe; the electric vibration compensator can be directly hoisted in place at a time; the operation procedure is simplified; and operation efficiency is improved.

The invention discloses a cleaning device for a numerical control milling machine for processing conveying machinery parts, and relates to the technical field of conveying machinery. The cleaning device for the numerical control milling machine for processing the conveying machinery parts comprises a numerical control milling machine shell, a collecting box is welded and mounted at the bottom of the inner side of the numerical control milling machine shell, a vibrating mechanism is arranged at the top of the collecting box, a cleaning liquid box is welded and mounted on the outer wall of one side of the numerical control milling machine shell, an infusion tube is welded and mounted on the outer surface of the top of the cleaning liquid box, and one end of the infusion tube extends into thecleaning liquid box. According to the cleaning device for the numerical control milling machine for processing the conveying mechanical parts, a certain vibration effect can be effectively carried out when waste materials are collected, the situation that debris remains in the device and cannot be well recycled can be well avoided, the collection rate of the device for collecting the debris can be effectively improved, and the situation that a worker manually recovers the debris, the debris has certain safety influence on the worker can be effectively avoided.

The invention discloses a battery charging control method for a pure electric vehicle, and the method specifically comprises the following steps that S1, a battery management system BMS controls a main negative relay to be closed based on a charging flag bit, and an HVCM controls a vehicle-mounted charger OBC to enter a current mode, i.e., controls the vehicle-mounted charger OBC to carry out thecharging at a constant current; and S2, the battery management system BMS controls the main negative relay to be disconnected based on the charging forbidding flag bit, and the HVCM controls the OBC to enter a voltage mode, that is to say, the output voltage of the OBC is the same as the output voltage of the power battery. When the main negative relay is disconnected, the OBC works in a voltage mode, the voltage of the OBC is kept consistent with the voltage of the power battery pack, and the situation that when charging is started, voltage difference exists between the power battery and theOBC, so that the main negative relay is closed to generate electric arcs, and safety is affected is avoided; When the main negative relay is closed, the OBC works in a constant-current mode, and the maximum charging efficiency and safety are guaranteed.

The invention discloses a seaway planning work station which comprises a data receiving and transmitting device, a PGS (global position system) positioning device, a sea chart data memory, a central processing unit and a sea chart navigation system. The invention further discloses a planning realization method of the seaway planning work station. The work station and the method have the benefits that comprehensive analysis is performed according to meteorological data of a sea route area via seaway planning; the safest seaway with better economy and timeliness is screened out according to a priority regulation that safety surpasses the economy and the economy surpasses the timeliness to guarantee a criterion that the navigation safety is the first; the seaway can be updated in real time; the influence on the safety, the economy and the timeliness due to accidents or weather change in a sea route is avoided; and the use is more safe and reliable.

The invention relates to a mine series ventilation identification method based on a sub-element proton method, and belongs to the technical field of mine operation. According to the sub-element proton method, virtual protons are constructed on the air return side of a working face according to roadway ventilation network flow, move along with air flow and reach ventilation network air distribution nodes, and are automatically split into a plurality of protons according to the number of air return roadways of the air distribution nodes, and the protons move along the air return roadways respectively; and so on, the protons finally reach and converge at the air return wellhead. If the virtual protons on the air return side of one working face pass through the air inlet side of the other working face, the two working faces belong to series ventilation and have major potential safety hazards; a series ventilation path between the series ventilation working faces is calculated through a traceability method; the identification method provides technical support for a coal mine to master underground roadway air flow distribution, and provides a scientific management tool and an advanced technical means for mine ventilation gas safety management and safety production.

The invention discloses an arsenic removal apparatus and method for purifying wet-process phosphoric acid by vulcanization. The apparatus herein comprises a screw conveyer, a vulcanizer chamber, a venturi mixer, a reaction tank and a solid-liquid separator. A vulcanizer is fed into the vulcanizer chamber through the screw conveyer; an outlet of the vulcanizer chamber is connected with a vulcanizerinlet of the venturi mixer; an outlet of the venturi mixer is connected with an inlet of the reaction tank; an outlet of the reaction tank is connected with the solid-liquid separator; the venturi mixer is also provided with a phosphoric acid solution inlet; the vulcanizer chamber is provided with a compressed air inlet; the reaction tank is an airtight device. Traditional stirring is replaced with the venturi mixer, so that materials are mixed well in the venturi mixer; the apparatus requires small floor area and has no power consumption, so that energy is saved, and the cost is reduced. Inaddition, the reaction tank is the airtight device, the vulcanizer has no need for being independently configured into a solution, overflow of hydrogen sulfide gas generated by the reaction is effectively prevented, field operation safety is improved, and the environment is protected.

The invention discloses a tower crane moving passage system. The system comprises a lifting frame, a lifting device, a telescopic platform and a telescopic device, wherein the lifting frame encloses the outer side of a standard section of a tower crane in an unseparated mode, the lifting frame is provided with a guide wheel which can only ascend and descend along the standard section of the towercrane and an ejector rod used for locking the height of the lifting frame, a power mechanism of the lifting device is installed on a tower crane balance arm and drives the lifting frame to ascend anddescend through a steel wire rope, the telescopic platform comprises a fixed platform and a movable platform, the fixed platform is connected with one side, facing a building structure, of the liftingframe in a swinging and locking mode, the movable platform is arranged on the fixed platform in an unseparated mode and can slide outwards along the fixed platform to the building structure, the telescopic device is used for driving the movable platform to stretch along the fixed platform, one end, close to the building structure, of the movable platform is provided with a screw rod capable of adjusting the height, and the screw rod is supported on the building structure during use. The system can rise along with the jacking of the tower crane and the installation of a wall attaching rod piece, can be fixed at any position of the tower crane standard section, and can adjust the setting angle and length.

The invention provides a meet resistance control method and a control system of a roller shutter door capable of adapting grease changing. Within a certain time after a motor starts working, if a controller receives a signal within a special period of time after meeting resistance and rebounding to an upper limit position, the meeting resistance and rebounding function is turned off. After the motor starts working for more than a certain time, the electric current reference value is increased to run again after meeting resistance and rebounding. The device can solve the problems that when thetemperature is lower, the motor gear lubricating grease is frozen, the running current of the motor is rapidly increased, and the roller shutter door mistakenly meet resistance to cause the difficultyof closing.

The invention discloses a composite embankment body ecological seawall structure on a soft soil foundation and a construction method of the composite embankment body ecological seawall structure. The composite embankment body ecological seawall structure comprises a seawall foundation, a composite embankment body structure, a protection structure and a greening structure. The composite dike body structure comprises lower dike core stones which are thrown and filled on a seawall foundation, inverted filter structures which are thrown and filled towards a land area along the side slope, close to the shore, of the lower dike core stones, dike core sand or dike subsoil which is thrown and filled towards the land area along the side slope, close to the shore, of the inverted filter structures, and upper dike core stones which are thrown and filled at the tops of the lower dike core stones, the inverted filter structures and the dike core sand or the dike subsoil. An anti-seepage wall is arranged in the dike core sand or the dike core soil; the greening structure comprises cultivating and planting soil and a three-dimensional grass planting mattress, wherein the cultivating and planting soil is laid and filled towards the land along the side slope, close to the bank, of the upper dike core stone, and the three-dimensional grass planting mattress is laid on the top face of the cultivating and planting soil. The construction difficulty of the anti-seepage wall is greatly reduced, the work efficiency and quality are improved, the stability of the seawall on the soft soil foundation is ensured, the settlement amount of the seawall is greatly reduced, and it is ensured that the anti-seepage wall is not cracked due to settlement of the seawall body.

The invention provides a vehicle-mounted terminal engineering mode entering method and system, a storage medium and a vehicle-mounted terminal. The method comprises the following steps: obtaining an entering instruction inputted by a user after the vehicle-mounted terminal is started when a storage device is connected to the vehicle-mounted terminal; when the entry instruction is the same as a preset instruction, detecting whether an authorization file exists in the storage device or not; when the authorization file exists in the storage device, verifying whether the authorization file is matched with the vehicle-mounted terminal or not; when the authorization file is matched with the vehicle-mounted terminal, entering an engineering mode. According to the vehicle-mounted terminal engineering mode entering method and system, the storage medium and the vehicle-mounted terminal, the engineering mode can be automatically started only by one storage device storing the authorization file, the operation is simple, and the user experience is greatly improved.