91results about How to "Compromise security" patented technology

The invention discloses a fuze isolation mechanism which comprises a frame, and a first U-shaped separator, a second U-shaped separator, a first spring and a second spring which are arranged in the frame, wherein the two springs are two-way shape memory alloy materials; the first spring is longitudinally connected with the first U-shaped separator; the second spring is transversely connected with the second U-shaped separator; notches of the two separators are opposite to each other and are embedded into a whole in a dislocated mode under the action of the compressing force of the two springs, so that fuze isolation is realized; after the second spring and the first spring are sequentially electrified, the second U-shaped separator is pulled to transversely move by virtue of the retractive force generated by the second spring, and the first U-shaped separator is pulled to longitudinally move by virtue of the retractive force generated by the first spring, so that fuze isolation is released; and after the power of the first spring and the second spring is sequentially cut off, the first U-shaped separator and the second U-shaped separator are sequentially reset to the fuze isolation state. According to the fuze isolation mechanism disclosed by the invention, reliable switching between the isolation release state and the isolation state is realized, and the problem that the conventional fuze isolation mechanism is low in restorability and low in safety coefficient is solved.

The invention discloses a following control method of a train track. The following control method comprises the steps of S1 obtaining a measured value of a front axle steering angle of a first carriage of a train and a measured value of a rear axle steering angle of the first carriage; S2 calculating an input value of the rear axle steering angle of the first carriage; S3 controlling rear axle steering of the first carriage according to the input value; S4 collecting hinged angles of hinged points of current carriages to previous carriages by starting from a second carriage; S5 calculating an input value of a rear axle steering angle of the current carriage and an input value of a front axle steering angle of the current carriage; S6 controlling rear axle steering of the current carriage according to the input value of the rear axle steering angle of the current carriage, and controlling front axle steering of the current carriage according to the input value of the front axle steering angle of the current carriage; S7 repeating S3 to S5, so that the control over the rear axle steering and the front axle steering of each carriage of the train is completed. The following control method has the advantages that the same traveling track of the hinged points of the train and the position concerned by a driver can be effectively guaranteed, so that the safety of pedestrians and vehicles is not endangered by steering of the train.

The invention discloses an in-vehicle environment monitoring system. The system is provided with an in-vehicle detection module, a vehicle door opening and closing detection module, an off-vehicle detection module, a controller module, a wireless transmission module and a braking module; when the vehicle door opening and closing detection module detects that a drive gets off a vehicle, the system starts to detect whether life bodies exist in the vehicle or not and the in-vehicle temperature and concentrations of carbon monoxide and carbon dioxide and detect concentrations of off-vehicle carbon monoxide, hydrocarbon and nitrogen oxide, when any in-vehicle parameter exceeds the standard, windows are opened through the breaking module, an exhaust fan is switched on through the braking module, an oxygen bottle is opened through the braking module, a vehicle engine is switched off, if any off-vehicle environmental index exceeds the standard, the windows are not opened or the opened windows are closed, and then the in-vehicle environment is effectively improved; when any in-vehicle parameter exceeds the standard, a signal is immediately sent to an external terminal through the wireless transmission module, and then terminal personnel are reminded to take rescue measures; by means of the modules, the in-vehicle environment can be improved in a reasonable mode, related personnel can be informed in time, and accidents are reduced.

The invention discloses a method for preventing and treating rock burst by using a filling mode and belongs to the technical field of coal mine safety production. The method includes the steps that a coal cutter cuts coal and feeds, a scraper conveyer conveys the coal, and a filling rock burst prevention hydraulic support protects side walls and supports roof; after a work face is advanced for a proper distance, a filling rock burst prevention material is adopted to implement filling and rock burst prevention on a goaf through the filling rock burst prevention hydraulic support; with the continuous advance of the filling operation, the filling rock burst prevention material is accumulated and compacted continuously to form a rock burst prevention body; the front stoping of the filling rock burst prevention hydraulic support and the rear filling of the filling rock burst prevention hydraulic support are conducted synchronously; after the filling operation meets requirements, a cycle of the work face filling coal mining is completed; the scraper conveyer is pushed to move to conduct a next cycle. The method for preventing and treating the rock burst by using the filling mode has the advantages that the active supporting capacity is strong, the integrality is strong, the setting lead is rapidly provided, crush resistance is achieved, tension resistance is achieved, the durable effect is achieved, yielding is achieved, water prevention is achieved, fire prevention is achieved, energy absorption is achieved, the low price is achieved, operation is convenient, the filling operation is rapid, the number of using personnel are less, the filling operation is simple, the road maintenance amount can be reduced, and the expense expenditure is reduced.

The invention discloses a tunnel face deformation alarm method based on mobile three-dimensional laser scanning. The method comprises the following steps: selecting a tunnel face to be monitored, andunifying coordinates by using a prism and a total station; mounting a preset mobile track trolley, and fixing a three-dimensional laser scanner on the mobile track trolley; determining a tunnel face monitoring point, and using the three-dimensional laser scanner to obtain point cloud data; processing the obtained point cloud data by using point cloud processing software, and determining a positioncorresponding to the tunnel face monitoring point in the entire point cloud data; obtaining a deformation value of the tunnel face monitoring point according to the point cloud data, and setting an early warning threshold in alarm software; and judging whether to perform automatic alarm according to whether a rock and soil deformation value of the tunnel face exceeds the early warning threshold.The tunnel face deformation alarm method has the beneficial effects of realizing real-time monitoring of the tunnel face and meeting the safety requirements during tunnel face operation.

The invention provides a differential power distribution network single-phase ground fault property and fault recovery judgment method. In a low-resistance ground fault area and an intermediate-resistance ground fault area, the property of a single-phase ground fault is judged according to the neutral point displacement voltage U<N> of a power distribution network; and in a high-resistance groundfault area, the property of the single-phase ground fault is judged according to the zero-sequence current I<m0> of a fault feeder. When the single-phase ground fault is judged to be a permanent ground fault in the low-resistance ground fault area and the intermediate-resistance ground fault area, whether or not a fault line is cut off is judged according to the neutral point displacement voltageU<N> of the power distribution network, and a ground fault processing device resets. When the single-phase ground fault is judged to be a permanent ground fault in the high-resistance ground fault area, whether or not the single-phase ground fault line is cut off is judged according to the zero-sequence current I<m0> of the fault feeder, and the device resets.

The invention provides a detonator security mechanism with a self-locking function. The detonator security mechanism comprises a sleeve, a plurality of tiles, a mass rod, detonating powder, a tube shell and a safety mechanism, wherein a step is arranged on the middle part of the mass rod; the sleeve is arranged on the part above the step of the mass rod; the tiles are uniformly distributed on the circumference in the sleeve; the safety mechanism is mounted at the upper end of the mass rod; the detonating powder is connected with the lower end of the mass rod; the tube shell is arranged outside the detonating powder. In a working process, the insurance of the safety mechanism is relieved, and when the mass rod senses overload, the mass rod downward moves to a limited position together with the detonating powder and the tube shell connected with the mass rod, and meanwhile, the tiles lose support and downward fall till reacquiring support from the middle step of the mass rod, so that the mass rod is locked on the limited position. The invention also provides a detonator based on the detonator security mechanism. The detonator security mechanism provided by the invention utilizes flight overload to drive the security mechanism and requires no detonator or flipping power supply for driving, has the self-locking function and high reliability, and is compact in structure and fit for a detonator use occasion with small radial size requirement.

The invention relates to a method for charging a vehicle, in particular a hybrid or electric vehicle, wherein the vehicle has at least one acceleration sensor and at least one traction battery, wherein the charging process of the traction battery is interrupted by a disconnecting device if an acceleration of the vehicle, which is measured by the acceleration sensor, meets a predefined condition.

The invention discloses a machine room air conditioner system and a control method thereof. The system comprises an outdoor unit and an indoor unit, and the outdoor unit is connected with the indoor unit. Temperature sensors and a pressure sensor are connected to an inlet pipeline and an outlet pipeline of a condenser of the outdoor unit. Temperature sensors are mounted on a water inlet pipeline and a water outlet pipeline. Temperature sensors and pressure sensors are connected to inlet pipelines and outlet pipelines of fluorine pumps. Bypass pipelines are connected to the outlet pipelines ofthe fluorine pumps. The other ends of the bypass pipelines are connected to the inlet pipeline of the condenser. Bypass electromagnetic valves are connected to the bypass pipelines. A temperature sensor and a pressure sensor are connected to an inlet pipeline of an electronic expansion valve of the indoor unit. A temperature sensor and a pressure sensor are connected to an outlet pipeline of an evaporator. An air return temperature and humidity sensor and an air outlet temperature and humidity sensor are further mounted on the evaporator. The control method comprises a control method of the indoor unit and a control method of the outdoor unit. The machine room air conditioner system is safe, reliable and good in stability, and the requirement of a machine room air conditioner can be met.

The invention relates to a telescopic spent fuel storage tank hoisting guide device which comprises a positioning annular plate (1), a top flange (2), an outer guide rib (5), an inner guide rib (7), a top reinforcing ring (3), a middle reinforcing ring (6) and a bottom reinforcing ring (9); the hoisting guide device also comprises a guide wheel assembly (8); the inner guide rib (7) is arranged inside the outer guide rib (5); and the guide wheel assembly (8) is arranged on the inner guide rib (7) and between the inner guide rib (7) and the outer guide rib (5). The telescopic spent fuel storage tank hoisting guide device can be used for hoisting guide and precise positioning of a spent fuel storage tank in a pebble-bed high temperature gas cooled reactor spent fuel storage system, so that the spent fuel storage tank can be hoisted into a shielding transferring container.

The invention provides a passenger vehicle door control system and method. A bus with passenger vehicle doors to which the system is applied is of the type where doors can be opened on both two sides,and the gas circuit connection mode that an outside-vehicle emergency controller is connected with a driver position emergency controller in series and connected with an inside-vehicle emergency controller in parallel is adopted. A vehicle door restraining device is connected into a gas circuit connected with the outer side of the vehicle in series, a vehicle door restraining device is connectedinto each door pump gas circuit inside the vehicle, and therefore when the vehicle normally runs at a speed larger than a preset speed, a passenger door controller should be at a restrained state so that the safety of passengers can be prevented from being endangered by abnormal operation, and when the vehicle stops or runs at a vehicle speed smaller than or equal to the preset speed, the passenger door controller should automatically restore the normal functions. The driver position emergency controller and the outside-vehicle emergency controller can be operated to control all the vehicle doors, that is, the door pump gas releasing functions of the four vehicle doors can be realized by operating one of the emergency controllers, and therefore the aim of opening the doors in emergency isrealized.

The invention discloses an automobile vehicle-mounted shooting sharing system which is provided with a microphone and a shooting sharing controller. The microphone is connected with a display screen through a signal circuit; the display screen is connected with the shooting sharing controller through a vehicle CAN; a vehicle-mounted camera is connected with the shooting sharing controller throughan LVDS line. The shooting sharing controller performs data transmission with a cloud platform through a network; and a cloud platform performs data transmission with a mobile phone of a vehicle userthrough a network. By the adoption of the technical scheme, a user can input an automatic shooting command through voice or a software switch or a hardware switch and the like in the driving process,and it is avoided that in the driving process, a driver uses a mobile phone for shooting and endangers the safety of vehicle personnel; pictures or videos shot by a vehicle-mounted shooting system canbe uploaded to a cloud platform database in real time through a 4G module, browsing, downloading and sharing of users are supported, and local data loss is avoided.

The invention relates to the technical field of railway construction, in particular to a concurrent operation high-speed railway separated line roadbed structure and a construction method thereof. The roadbed structure comprises a plurality of rows of drilled grouting piles uniformly distributed in the width direction of a railway roadbed. Each row comprises the multiple of drilled grouting piles uniformly distributed in the length direction of the railway roadbed. The roadbed structure further comprises reinforced concrete U-shaped grooves in the tops of the drilled grouting piles. The tops of the drilled grouting piles are embedded into reinforced concrete U-shaped groove bottom plates and are in rigid connection with the reinforced concrete U-shaped groove bottom plates. The reinforced concrete U-shaped grooves are filled with roadbed filling. The reinforced concrete U-shaped grooves have the effect of reducing the gradient, on the one hand, the building cost of projects is lowered, and on the other hand, an additional load is prevented from invading the operating roadbed.

The invention discloses an overbank flow foundation self-collapse dam geotextile emergency flood bypass, and belongs to the field of hydraulic engineering of emergency spillway projects and national defense of dams dealing with water attacks. The emergency flood bypass mainly comprises an overbank flow foundation self-collapse dam designed according to an overbank flow foundation self-collapse damdisaster prevention and damage reduction design theory. The overbank flow foundation self-collapse dam (1) comprises overbank flow foundation secondary self-collapse dams and overbank flow foundationwater guiding and pollutant flushing self-collapse dams. Protective surfaces of geotextile of the geotextile emergency flood bypass (2) comprise the geotextile scale-shaped protective surface (II-a),the geotextile belt passing scale-free protective surface (II-b), the concrete plate armour geotextile belt passing scale-free protective surface (II-c), the chemical fiber rope net loose-stone armour geotextile belt passing scale protective surface (II-d) and the L-shaped geotextile belt passing geotextile scale-shaped protective surface (II-e). The emergency flood bypass is suitable for a reservoir auxiliary dam, a main dam, a high dam and a high ditch head barrage, capable of achieving controllable and automatic emergency flood diversion, simple in structure, convenient to implement, low in manufacturing cost, safe, reliable and free of permanent land occupation.

The invention relates to fire-fighting equipment, in particular to a fire extinguishing system for a stay cable tower end. The system comprises a spraying fire extinguisher and a controller, wherein the spraying fire extinguisher comprises a water tank fixed inside a cable tower; a water outlet pipe is arranged at the bottom of the water tank; the inlet end of the water outlet pipe communicates with the water tank; a water outlet main is arranged at the outlet end of the water inlet pipe; a plurality of branch pipes communicating with the water outlet main are arranged at the outlet end of the water outlet main; a plurality of nozzles directly facing stay cables and cable tower anchorage points are arranged on the branch pipes; the controller comprises a ball valve mounted on the water outlet main and a control cabinet used for controlling the opening-closing of the ball valve; and the ball valve is electrically connected with the control cabinet. According to the system provided by the invention, the comprehensive and detailed fire-fighting design is adopted for an anchorage area of the stay cable tower end, so that a fire disaster can be effectively prevented from occurring in course of both bridge construction and post-stage operation. By utilization of the control cabinet, a smoke signal is acquired, a spraying instruction is issued, fire is automatically and timely extinguished, and the fire disaster is prevented from spreading and endangering the bridge safety.

A system for anomaly estimation for a telephonic call is described, receiving a call object including an identifier field associating the call object to a purported user; retrieving a user data object associated with the purported user, and processing the user data object to retrieve one or more vectorized user features associated with the purported user. A neural network processes the one or more vectorized call features and the one or more vectorized user features through a machine learning model.

The invention relates to the technical field of landscape architecture, in particular to a mountain area highway subgrade. According to the technical scheme, the mountain area highway subgrade comprises a cut subgrade and a fill subgrade, a main drainage ditch is constructed at the joint of the cut subgrade and a mountain body, a plurality of gabion mesh cages are arranged at the top end of the cut subgrade, the gabion mesh cages are arranged form the inner of the main drainage ditch to the cut subgrade, a concrete bridge is longitudinally constructed on the side, directly opposite to the fillsubgrade, of the top end of the cut subgrade, the concrete bridge is higher than the top surfaces of the gabion mesh cages and the fill subgrade, a water-proof layer is paved on the top surfaces of the gabion mesh cages, the top surface of the fill subgrade, and the top surface of the concrete bridge and the top surface of the water-proof layer are used for paving a pavement structure layer. According to the mountain area highway subgrade, the structural strength of the subgrade is ensured, meanwhile the effective drainage section area of the drainage ditch is enlarged, the characteristics ofhigh drainage capacity and reliable drainage are achieved, and the subgrade safety can be guaranteed for a long time.

The invention relates to an anti-falling bolt and nut for an electric power iron tower and a working method thereof. The anti-falling bolt and nut comprises a bolt and a nut, wherein a penetrating groove enabling the bolt to form a U-shaped structure is formed in a screw rod of the bolt, a plurality of screw holes are formed in the positions, on one side of the penetrating groove, of the bolt in apenetrating mode, limiting screws are arranged in the screw holes in a threaded mode, one end of the nut is sequentially and fixedly provided with a pressing ring comprising a first penetrating hoe and a first ratchet wheel, and a sliding rod comprising a second penetrating hole and a boss, a sliding sleeve sleeves the sliding rod comprising a third penetrating hole and a first inserting hole, asecond inserting hole and inner threads are arranged at the inner end and the outer end of the first inserting hole respectively, a buckling part is arranged in the first inserting hole, and the buckling part comprises a jacking head, a push spring and a fixing screw. According to the anti-falling bolt and nut for the electric iron tower and the working method thereof, the situation that the boltand nut falls off due to looseness is prevented, the anti-falling bolt and nut only comprises two components of the bolt and the nut, so that the anti-falling bolt and nut is convenient to carry, take, mount and dismount.

The invention discloses an alarm protection structure of the gas detector mainboard. The alarm protection structure comprises a power supply unit, a display unit, a dust alarm unit, a temperature and humidity alarm unit and a sound-light alarm control unit, wherein the power supply unit, the display unit, the temperature and humidity alarm unit, the dust alarm unit and the sound-light alarm control unit are all connected with the gas detector mainboard; the dust alarm unit comprises a dust filtering alarm device, and the temperature and humidity alarm unit comprises a temperature sensor and a humidity sensor. The alarm protection structure of the gas detector mainboard has the effects of protecting the gas detector mainboard in a severe environment, achieving an alarm warning effect under a certain condition and conveniently treating dust accumulation.

The invention discloses a fuze isolation mechanism which comprises a frame, and a first U-shaped separator, a second U-shaped separator, a first spring and a second spring which are arranged in the frame, wherein the two springs are two-way shape memory alloy materials; the first spring is longitudinally connected with the first U-shaped separator; the second spring is transversely connected with the second U-shaped separator; notches of the two separators are opposite to each other and are embedded into a whole in a dislocated mode under the action of the compressing force of the two springs, so that fuze isolation is realized; after the second spring and the first spring are sequentially electrified, the second U-shaped separator is pulled to transversely move by virtue of the retractive force generated by the second spring, and the first U-shaped separator is pulled to longitudinally move by virtue of the retractive force generated by the first spring, so that fuze isolation is released; and after the power of the first spring and the second spring is sequentially cut off, the first U-shaped separator and the second U-shaped separator are sequentially reset to the fuze isolation state. According to the fuze isolation mechanism disclosed by the invention, reliable switching between the isolation release state and the isolation state is realized, and the problem that the conventional fuze isolation mechanism is low in restorability and low in safety coefficient is solved.

A hydrofoil folding vessel relates to folding vessels. The hydrofoil folding vessel solves the problem that, due to the fact of being made of light materials, existing folding vessels are thin in structure and poor in rigidity and stability under heavy load. According to the hydrofoil folding vessel, vessel body folding grooves, gunwale folding grooves, corner folding grooves and carrying folding grooves are cut out in selected positions of a rectangular flat sheet; along the folding grooves, the sheet can be conveniently folded into a trapezoid vessel body; hydrofoils are mounted on the sideboards, the nose and the stern of the vessel body; the hydrofoils are made of a plurality of rectangular sheets, which are bent into an arc shape in a simple mode or bent into a triangular shape; both edges of every hydrofoil are connected with the corresponding sideboard and a vessel bottom plate to form secondary reinforcement and protection to the vessel bottom plate and the circumference of the vessel body and accordingly to enhance the rigidity of the vessel body and further to enhance safety. The hydrofoils enlarge the contact areas between the vessel body and water, so that the stability of the vessel body can be greatly improved. The hydrofoil folding vessel is applied to flood fighting and disaster relief, water recreations and water transportation.

The invention provides a maintenance method for maintaining a crane (1), said crane comprising a monitoring system linked to a drive device (2) arranged to allow a plurality of motorized drives, said maintenance method being characterized in that it implements the following steps: a step of changing a configuration by means of a maintenance control system in order to switch said crane into a maintenance configuration, wherein the motorized drive is initially blocked by the monitoring system; a selection step for selecting, by means of a maintenance module (5) connected to the monitoring system, a maintenance maneuver, the drive of which is initially blocked, from among the plurality of maneuvers; an unlocking step in which the monitoring system unlocks the drive of the maintenance maneuver; and a step for driving the maintenance mover by means of a drive device.

The invention provides a column porcelain insulator. When an aluminum steel conductor is fixed by utilizing the column porcelain insulator, the aluminum steel conductor is placed in a first groove first; the first groove is the same as a second groove; a distance from a first fixed hole to a central point of the second groove is the same as that from a first fixed rod to a central point of the first groove; a distance from a second fixed hole to the central point of the second groove is the same as that from a second fixed rod to the central point of the first groove; when a first bolt and a second bolt which are penetrated by nuts are screwed on the first fixed rod and the second fixed rod by penetrating through the first fixed hole and the second fixed hole, the first groove is aligned to the second groove, and the aluminum steel conductor is fixed by a groove formed by the first groove and the second groove, so that the abrasion to the aluminum steel conductor due to micro-vibration is reduced, the probability that the aluminum steel conductor is abraded is reduced, and a power failure rate is reduced; and the fixing mode is firmer than a binding mode, so that the aluminum steel conductor can be prevented from falling, and the personal safety is prevented from being endangered.

The invention provides a gas detection internal component alarm protection structure for a dust environment. The gas detection internal component alarm protection structure comprises a power supply unit, a display unit, a filtering and heat dissipation unit, a temperature and humidity alarm unit and a sound and light alarm control unit, wherein the power supply unit, the display unit, the filtering and heat dissipation unit, the temperature and humidity alarm unit and the sound and light alarm control unit are all connected with gas detector equipment controller, the temperature and humidity alarm unit comprises a temperature sensor and a humidity sensor, and the filtering and heat dissipation unit comprises a left heat dissipation and filtering device, a right heat dissipation and filtering device and a protection cover. The invention aims to provide gas detection equipmentalarm protection structure for a dust environment, wherein the structure has the effects of protecting a gas detector mainboard in a severe environment, achieving an alarm protection effect under a certain condition, and cleaning accumulated dust in time.

The invention relates to an automobile safety seat based on a topological parallel structure. The automobile safety seat based on the topological parallel structure comprises a seat body, wherein therear end of the seat body is provided with a connecting device; a connecting adjusting device is connected with a seat back; the seat back is provided with a protecting device through a pin shaft; anda guide block is arranged between the seat back and the connecting adjusting device. The invention can solve the following problems when an existing automobile runs on a complex road surface: a, whenthe automobile runs on a bumpy road surface, and the comfort degree of passengers cannot be guaranteed by an existing automobile seat when the automobile shakes; b, even if a passenger adjusts the seat to a comfortable angle, the angle of the seat can be changed after the seat is impacted; c, when the driver of the automobile is tired, accidents are easy to happen, and the safety of people in theautomobile is endangered; and d, when the automobile collides, the passengers are injured and even thrown out of the automobile due to strong impact caused by inertia of the automobile.

The invention relates to a battery protection device of a balancing car and a balancing car. The balancing vehicle comprises wheels, a vehicle shell, a base in the vehicle shell, a battery and a battery protection device, wherein the battery is fixedly arranged on the base through the battery protection device, the battery protection device comprises a cushioning material with cushioning functionand a fire-retardant refractory material, the cushioning material is wrapped outside the battery, and the refractory material is wrapped outside the cushioning material; the shape of the refractory material is a hollow cuboid, and the interior space of the refractory material is used for accommodating the battery. When the balancing car is impacted, the cushioning material can play a cushioning role, reduce the impact force on the battery, and protect the battery from being easily crashed or spontaneously ignited by the impact; at the same time, the outermost layer of refractory material can insulate the fire when the battery spontaneously combusts, play the role of flame retardant, and prevent the fire from spreading to the entire balance car and surrounding articles.

The invention relates to a battery protection device of a balancing car and a balancing car. The balancing vehicle comprises a vehicle shell, the battery protection device comprises a cushioning material with cushioning function and a fire-retardant refractory material, wherein the cushioning material is wrapped outside the battery, and the refractory material is wrapped outside the cushioning material; the shape of the refractory material is a hollow cuboid, and the interior space of the refractory material is used for accommodating the battery. When the balance car is impacted, the cushioning material can play a cushioning role, reduce the impact force on the battery, and protect the battery from being easily crashed or spontaneously ignited by the impact; at the same time, the outermostrefractory material can play the role of flame retardant when the battery spontaneously combusts, so as to prevent the fire from spreading to the whole balance vehicle and the surrounding articles, damage the whole balance vehicle or the surrounding articles, and even endanger the safety of users.