287results about How to "Avoid risk of failure" patented technology

The invention relates to a safety JTAG module and a method for protecting security of information inside a chip, wherein the safety JTAG module comprises a nonvolatile medium (206), a loading circuit (205), a security attribute control register (214), a TAP controller (201), two selectors (207 and 211), a switch (203), a password authentication module and a logic processing module; the TAP controller (201) and the two selectors (207 and 211) are connected between a JTAG port (1) and a protected object inside the chip; the switch (203) is switched by the control of a timer (202); the password authentication module is used for authenticating whether a clear-text password input by a user is accordant with a fuzzification password or not; and the logic processing module is used for logically processing an authentication result output by the password authentication module and an indication signal output by the security attribute control register (214) and outputting an enable signal to the two selectors (207 and 211) so as to control whether the JTAG port (1) is allowed to be connected with the protected object inside the chip through the TAP controller (201) or not. The invention ensures the security and the convenience of an SOC chip in testing and debugging processes, thereby protecting the security of data inside the chip.

The invention discloses a block chain-based digital vein access control system, and belongs to the technical field of security systems. The block chain-based digital vein access control system structurally comprises a block chain database, host control software, a digital vein recognition module, a power module and an electromagnetic lock, wherein the block chain database is used for storing digital vein information of a user; the host control software is a control center of the digital vein access control system; the digital vein recognition module is used for collecting the digital vein information of the user; the power module is used for providing the digital vein access control system with power; the electromagnetic lock is used for controlling opening and closing actions of the access control system. Compared with the prior art, the access control system has the advantages that storage of the digital vein information of the user is carried out by using the block chain database, the risk of a failure of the whole system due to the fact that one node fails or is attacked is avoided and the security level of the access control system is improved.

The invention discloses a system for managing energy in an echelon battery pack energy storage station. The system adopts a distributive topology structure and includes an echelon battery module, an energy storage converter and a monitoring system. The monitoring system is set with monitoring cycles each of which includes the following steps when begins: 1. a charge state acquisition unit which is disposed inside the echelon battery module on each branch acquiring the charge state of each echelon battery module, uploading the charge state to the monitoring system through a CAN bus; 2. the monitoring system, based on the charge state of the echelon battery module of each branch and a dynamic power value that is set, calculating the power value that requires real-time controlling of each branch, issuing the power value to a corresponding energy storage converter for performing control, further controlling the real-time power in charging and discharging of each branch. According to the invention, the system ensures that the overal power meets systematic requirements, and the operation efficiency and service lifetime of the system is increased, and the risks of ineffectiveness of a single branch caused by over-charging or over-discharging of a single branch.

The invention provides a parallel control method for high-capacity energy accumulation converters of an energy accumulation power station. The parallel control method comprises the steps that first, all electrical equipment in the energy accumulation power station is initialized; second, communication information is sent between PCS units; third, if the quantity of the communication information sent by the PCS units and the quantity of response information received by the PCS units are the same, the PCS units start to conduct grid connection; fourth, one PCS unit is determined to be used as a main machine, and the rest PCS units are slave machines; fifth, the slave machines conduct adjusting according to the output voltage of the main machine, and grid connection begins; sixth, if the slave machines do not complete grid connection within preset time, grid connection is stopped, and grid connection failure signals are sent. Compared with the prior art, according to the parallel control method for the high-capacity energy accumulation converters of the energy accumulation power station, on-line reliable parallel connection of the multiple energy accumulation converters can be achieved, and the capacity of the energy accumulation power station is expanded. The strategy of electrically free main machine seizing of the energy accumulation converters is adopted, the risk of faults caused by manually setting the main machine is avoided, and the reliability of the energy accumulation power station is improved.

A method for evaluating probability of forest fire fault tripping of a power transmission line is characterized by taking data with easily obtained macroscopic meteorological conditions, geographical conditions and date as input and adopting a forest fire occurrence probability model, a power transmission line fault model under the condition of forest fire and a forest fire spreading model to predict the probability of forest fire fault tripping of a power transmission line, or calculating the probability of line fault tripping after the occurrence of forest fire, and analyzing the influence degree of peripheral fire source points to the line forest fire fault, so as to achieve evaluation for the probability of forest fire fault tripping of the power transmission line, draw a grade distribution map of forest fire risky areas, make a forest fire fault pre-arranged plan of the power transmission line and disaster prevention and mitigation measures, and evaluate the forest fire occurrence probability of areas which the power transmission line passes through a fuzzy comprehensive evaluation method. The method of the present invention is mainly used for risk evaluation of forest fire fault tripping of a power transmission line and making a forest fire fault pre-arranged plan of the power transmission line and disaster prevention and mitigation measures.

The invention provides a warm-season turf establishment method. The warm-season turf establishment method is mainly used for establishing a turf against a warm-season turf grass seeding method. According to the warm-season turf establishment method, various conditions required for seed germination of warn-season turf grass and growth of seedlings till the turf is formed can be ensured by controlling fertilizing amount and watering amount, utilizing control temperature, humidity and illumination of an agricultural plastic mulching film and applying a seedling stage film supporting technology. An effective method which can realize large-area application in production practices of garden afforestation, and can not only solve the difficult problems of turf establishment through the warm-season seeding method, but also reduce turf establishment cost is provided by preparing a place before the turf establishment, seeding, controlling the temperature and humidity during the germination stage, curing the seedlings in the film, controlling the temperature of the support film and the like.

The invention discloses an intelligent sample collecting device which comprises a machine frame. The machine frame is provided with a feed inlet. A rotatable rotating disc mechanism and multiple sample storage barrels used for collecting samples are arranged in a collecting cavity formed by the machine frame. The sample storage barrels are hung on the rotating disc mechanism. Each sample storage barrel is provided with a hinged barrel cover and an induction locking mechanism used for locking the barrel cover. The hinged position of the barrel cover is provided with an elastic part so that the barrel cover can bounce upwards to be opened when not locked. The feed inlet is provided with a liftable weighing mechanism. The weighing mechanism is provided with an induction unlocking assembly matched with the induction locking mechanism. When the rotating disc mechanism drives the sample storage barrels to rotate to the position below the feed inlet, the weighing mechanism raises to lift up the sample storage barrels, so that the induction locking mechanism induces an unlocking signal of the induction unlocking assembly to open the barrel covers for sample connection and weighing operation. The intelligent sample collecting device has the advantages that the structure is simple and compact, the intelligence degree is high, sample collection and transfer safety is high, sample collection quality precision is high, working efficiency is high, and the production cost is low.

The invention discloses inner column type umbrella-shaped expanding equipment and an expanding method thereof. The inner column type umbrella-shaped expanding equipment comprises an umbrella-shaped expanding device and a plurality of longitudinally-distributed inner columns; and the inner columns are pressure-bearing columns I or telescopic pressure-bearing columns or telescopic pull rods; when the number of the inner column is one, the inner column is located on the central axis of the umbrella-shaped folding rod set; when the number of the inner columns is larger than or equal to two, the multiple inner columns are distributed around the central axis of the umbrella-shaped expanding body device; the inner columns are combined or independently arranged; the combined arrangement of the inner columns comprises combined arrangement of a tie bar disc and the front end of the inner column and/or combined arrangement of a tie bar penetrating disc and the rear end of the inner column; when the inner columns are the pressure-bearing columns I, one ends of the pressure-bearing columns I are hinged to the front ends or the rear ends of all the folding rods, and the other ends of the pressure-bearing columns I are located between the front end and the rear end of the umbrella-shaped folding rod set; and when the inner columns are the telescopic pressure-bearing columns or the telescopicpull rods, the two ends of the telescopic pressure-bearing columns or the telescopic pull rods are fixedly connected with the front end and the rear end of the umbrella-shaped folding rod set respectively. The inner column type umbrella-shaped expanding equipment and the expanding method thereof are used for achieving the purpose of optimizing the pre-collection type three-hinge pressure-bearing structure.

The invention provides a method for updating a deteriorated grassland bluegrass lawn at low cost in the north. Weed control, pruning height control, lawn partition area and turf block size determination, rooting hastening with grass blocks soaked in pesticide, determination of the number of turf blocks planted in a community per square meter and planting positions, compacting, watering, sand covering, growth regulator application and other technologies are applied, on the basis of the natural rules of plant interspecific competition and the survival of the fittest, zoysia japonica can easily invade the deteriorated grassland bluegrass lawn due to strong creeping stems and the strong growing vigor and competitiveness, other grass seeds can hardly invade the lawn once the population of the zoysia japonica is formed, and therefore the aim of updating the deteriorated grassland bluegrass lawn at low cost is achieved. The effective method can be applied to the production practice of landscaping in a large area, can solve the problem of a deteriorated cool-season lawn, and can lower updating cost.

The invention relates to a mechanical seal arrangement comprising: a rotating slide ring (2) with a first sliding surface, and a stationary slide ring (3) with a second sliding surface, which delimit a sealing gap (4) between one another, the first and second sealing surfaces having differing hardness. The harder sealing surface (20) has a diamond coating and the softer sealing surface consists of carbon composite material and a mean initial roughness Ra1 (of the diamond coating (20)) is smaller than the mean initial roughness of the sliding surface made of carbon composite material.

The invention discloses a casing pipe pressure control well cementation process, and belongs to the technical field of oil and gas development well cementation. The casing pressure control well cementation process sequentially comprises a casing running stage, a cement injection and displacement stage and a bump pressure and setting waiting stage. In the casing running stage, the cementing and displacing stage and the bumping and waiting stage, the well bottom circulation equivalent density of the narrow safety density window well section is kept between the pore pressure equivalent density and the rupture pressure equivalent density corresponding to the narrow safety density window well section by controlling the wellhead annulus pressure. In the well cementation process, the wellhead annulus pressure is controlled; the well bottom circulation equivalent density corresponding to the narrow safety density window well section is enabled to be between the pore pressure equivalent densityand the rupture pressure equivalent density; it is ensured that a weak pressure-bearing stratum is not pressed to leak while the oil and gas display layer is pressed stably, the casing well cementation construction risk of a narrow safety density window well section is reduced, the well cementation quality is improved, the well integrity is improved, and the development benefits are ensured.

An embodiment of the invention provides a document number generating method and a document number generating system. The method includes the steps: determining business numbers according to received system instructions; selecting unused serial numbers as sequence numbers from serial numbers corresponding to the business numbers; determining designated information at the tail of document numbers; generating check bits by means of computing according to the business numbers, the sequence numbers and the designated information; and assembling the business numbers, the sequence numbers, the check bits and the designated information according to preset assembly rules to generate the document numbers. By the aid of the data processing method, the document numbers including the designated information can be obtained by means of computing once, response time for generating the needed document numbers is strictly controlled, and system overhead is effectively controlled.

The invention relates to the technical field of medical instruments, in particular to a safety infusion set on the basis of the bubble point pressure principle. The technical scheme includes that a liquid medicine filter medium with the bubble point value ranging from 7.85 to 25kPa is selected according to the bubble point pressure principle, infusion of liquid medicine is stopped automatically according to the characteristics of the liquid medicine filter medium when the liquid medicine in the infusion set drips off, so that air can be prevented from entering an infusion tube and safety is guaranteed. Further, an exhaust tube extending to an inner cavity of a dropper is arranged in the dropper, a filter medium capable of exhausting air but not draining liquid is arranged at the extending end of the exhaust tube, so that automatic exhaust is realized significantly and safely and the high-efficiency and safe air separation effect is realized since the infusion set is combined with the bubble point pressure principle.

The invention relates to a nuclear power main control room ventilation air conditioning system. The system comprises a normal ventilation air conditioning system, an emergent filter ventilation air conditioning system and a served area; the emergent filter ventilation air conditioning system is in control connection with a radiation monitoring system; the normal ventilation air conditioning system comprises two sets of air conditioner units connected in parallel; the air conditioner units are in entity separation; intake ends of the air conditioner units are both connected with a normal fresh air port, and exhaust ends are both connected with the served area; an intake end of the emergent filter ventilation air conditioning system is connected with an emergent fresh air port, and an exhaust end is connected with intake ends of the air conditioner units; an intake end pipeline of the normal ventilation air conditioning system and an intake end pipeline of the emergent filter ventilation air conditioning system are both provided with electric isolation valves; and fireproof valves are respectively arranged on intake end pipelines and exhaust end pipelines of the two air conditioner units. The system satisfies the residing requirements of a main control room under normal working conditions and accident working conditions, is more reasonable in structural design, and improves the operation safety and reliability of a nuclear power station.

The invention relates to a rapid-temperature-controlled transfusion pump. The rapid-temperature-controlled transfusion pump is characterized in that a dripping chamber (1) is connected with an transfusion pump body (2) through an infusion pipe (9.1), the transfusion pump body (2) is connected with a heating inductor (3) through an infusion pipe (9.2), the heating inductor (3) is connected with a gas collecting device (4) through an infusion pipe (9.3), the middle of the infusion pipe (9.3) is provided with a temperature monitoring device (5), the infusion pipe below the gas collecting device (4) is provided with branches which are connected through a ping-pang safe stop valve (8), one branch is connected with an inner circulation loop (10), the other branch is connected with a patient loop (11), a bubble monitoring device (6) is installed between the infusion pipe below the gas collecting device (4) and the inner circulation loop (10), the patient loop (11) is provided with a pressure monitor (7), and a liquid medicine inflow pipe recognizing device (12) and an infrared temperature measuring point (13) are arranged above the dripping chamber (1). By means of the rapid-temperature-controlled transfusion pump, the real-time blood temperature ranging from 0 DEG C to 4 DEG C is raised to the temperature ranging from 36 DEG C and 40 DEG C, and fast infusion with the speed of 1000 ml/min is achieved; by means of a paramagnetic body, it can be ensured that the temperature of a heating body for transfusion does not exceed 42 DEG C, and the safety of blood products is guaranteed, necessary protection is achieved for the life safety of a patient; the rapid-temperature-controlled transfusion pump has the one-key emergency infusion function to meet the first-aid need.

The invention relates to a weather service system for automatic navigation and a method. The system comprises an automatic driving client side, a weather service side and a navigation service side, wherein the automatic driving client side is used for uploading GPS positioning data, target point information and key index thresholds of a vehicle sensor to the navigation service side; the weather service side is used for collecting element weather grid data in real time from a weather value mode system, performing fusion calculation on the element weather grid data to acquire automatic driving weather grid data; the navigation service side is used for excluding roads which are not suitable for going through in a road network based on the road network, the GPS positioning data, the target point information, the key index thresholds of the vehicle sensor and the automatic driving weather grid data, and planning the driving path according to the road network after the roads which are not suitable for going through are excluded. The weather service system can realize automatic and efficient path planning by combining with the weather situation and vehicle situation, and well combines with the automatic driving technology.

Disclosed is a regeneration treatment method of paper-making black liquor as well as an apparatus thereof, and the method comprises the steps that: firstly, the primary solid-liquid separation of mixture to a paper-making black liquor is implemented by adopting a belt filter press; secondly, the separated liquid enters a hollow-fiber membrane ultra-filtration separator through a retainer, and a hollow-fiber membrane adopting the chip type packaging is used to pump the solution by the negative pressure mode; thirdly, the separated filtrate is directly pumped into a reverse osmosis membrane system through a separating pump for concentrating a caustic soda solution; fourthly, the caustic soda solution is drained to a clear liquid storage tank after being concentrated by the reverse osmosis membrane, and the lye in the tank is tested to have the appropriate caustic soda concentration and can be directly pumped to the paper-making process for recycling; and fifthly, when the tested caustic soda has insufficient effective concentration, the lye is pumped to a causticization tank for causticizing treatment and then for recycling. The apparatus mainly comprises: a black liquor pond communicated with a paper-making production line, and the belt filter press used for the solid-liquid separation of lye in the black liquor pond; the hollow-fiber membrane ultra-filtration separator connected behind the belt filter press; and the clear liquid storage tank connected behind the reverse osmosis membrane which is connected behind the ultra-filtration separator, and the storage tank is connected with the causticization tank or directly connected with a lye scheduling pipeline as required.