375results about How to "Expand the scope of protection" patented technology

A device for decrypting data includes a number of devices secured by at least one security device. The secured devices include a receiver for receiving calculation data encrypted using a homomorphic encryption function and a decryptor for decrypting the encrypted calculation data by carrying out the inverse of the homomorphic encryption function on the encrypted calculation data using a private key assigned to the homomorphic encryption function. A method and a computer program product for decrypting data are also provided.

The invention discloses a fault arc detection method which comprises the following steps of: sampling a current signal to acquire a sampling signal, then separating a high-frequency part from the sampling signal, identifying electric arcs by detecting the energy mutation of the high-frequency part and recording the appearance frequency of the electric arcs, and finally identifying a fault arc by detecting the frequency of the electric arcs. By utilizing the characteristic that the fault arc waveform contains high-frequency disturbance as a judgment condition for identify the electric arcs, the method effectively detects the alterative-current resistant load and the direct-current fault arc. The invention also discloses a protection device adopting the method, which can effectively recognize various fault arcs and takes corresponding protection measures.

The invention discloses a power-fail protection method, which comprises the following steps: when abnormal power-fail is detected, a piece of standby power supply equipment supplies power to a memory, a memory controller and nonvolatile storage medium; the memory and the data of the memory controller are written into the nonvolatile storage medium. The invention also discloses a power-fail protection system and the device. The invention has the advantages of solving the limit of specification for stand-by battery time and protecting the memory data for longer time under the condition of not increasing capacity of the battery and expanding protection range simultaneously, increasing the protection of buffered data of the memory controller and the data of a register, having functions such as recording power-fail event log and encrypting and / or compressing when the data is stored and more effectively protecting data and configuring information.

The invention discloses a circuit power fail safeguard device and a protection method thereof. The device comprises a power fail detection circuit, a charging circuit and a discharging circuit, wherein the power fail detection circuit is connected with a circuit to be detected and is used for detecting whether the circuit to be detected has the phenomenon of power failure; the charging circuit isconnected with the power fail detection circuit and is used for storing electrical energy; and the discharging circuit is respectively connected with the charging circuit and the circuit to be detected and is used for supplying power for the circuit to be detected when the circuit to be detected has the phenomenon of power failure. The invention overcomes the defects of high cost and short service life caused by using a stand-by battery, and simultaneously expands the protection range and increases the protection for cache data and register data of a memory controller, thus being capable of supplying power for an internal memory and an internal memory controller under the condition that equipment suddenly have power down phenomenon, and ensuring the equipment to completely store the processed data and the related status messages. In addition, the invention also has the advantages of simple circuit, low cost, short charging time, high efficiency, small volume and long service life.

A technique efficiently determines acceptable link-based loop free alternates (LFAS) in a computer network. According to the novel technique, a protecting network device configured to protect a link (“protected link”) distinguishes other network devices (e.g., of the same domain as the protecting network device) as either network edge devices (i.e., an end point for external network traffic) or network core devices (i.e., not an end point for external network traffic). The protecting network device may then determine whether a neighboring network device loops toward a network edge device. If not, the protecting network device may determine that the neighboring network device is an acceptable LFA (e.g., for external network traffic). Notably, traffic directed to core devices may still loop, however, this traffic is generally internal (e.g., signaling) traffic, and may not be subject to the same operational constraints (e.g., protection) as external traffic.

The invention provides a millimeter-wave image analysis method, which comprises the following steps: acquiring a millimeter-wave image of a monitored region; carrying out image segmentation on the millimeter-wave image and obtaining a binary image; carrying out region filling on the binary image; carrying out connected region labeling on the binary image after the region filling, and obtaining the maximum connected region which is a suspicious fire region; and carrying out fire point judgment on the suspicious fire region, and judging whether the suspicious fire region is the region which is bound to cause fire or not. The invention provides a fire monitoring system which comprises at least one passive millimeter-wave imaging system, at least one video imaging system, a communication module, a communication network and a monitoring server, wherein the millimeter-wave imaging system is used for acquiring the millimeter-wave image of the monitored region, analyzing the millimeter-wave image, judging the region which is bound to cause the fire, producing alarm information and sending the alarm information to the monitoring server; and the video imaging system is arranged in the monitored region and used for acquiring a video image of the monitored region.

This invention relates to a method for realizing protection of quick turn-off of adaptive current of supply circuit and distribution line including: electrified preparation of digital relay protection device, presenting initial value to KkI, Z and 1 to measure the values of IK, Uk, I2 and II, judging if the value of I2 is greater than that of K times of I1 (0<K<1), if so, then Kd=3 / 2, if not, the protector operates, otherwise, values of Kd, Zs, E, Kj and Kb are computed again and the value of Iset.I is determined, which computes and corrects the setting of current quick turn-off protection online to suit the topological structure of the power system, operation way and variance of fault kind.

The invention relates to the field of medical instruments, in particular to an X-ray protection device with an integrated structure for an angiography machine. The device comprises a protection screen unit, a protection curtain unit and a bedside sliding rail unit, wherein the protection screen unit is arranged on the protection curtain unit, and the protection curtain unit is fixed on the bedside sliding rail unit so as to enable the protection curtain unit and the protection screen unit to synchronously and horizontally move along a bedside. The protection device can synchronously move along with a bed, and in a moving process, the protection device is always in the best protecting state and close to a patient, so that the problem that the radiation, especially the secondary stray radiation caused by the rays reflected by the patient, can not be effectively shielded due to the movement of the bed surface of a conduit bed is effectively solved, and meanwhile, the problems of prolonged surgery time, increased surgery risk and the like that are caused by adjusting the protection screen unit during surgery in the prior art are effectively avoided.

The invention discloses a method for protecting object files. The method comprises the steps that after disassembling is conducted on functions needing to be protected in each object file used in software, deformation is conducted on orders of the functions, a junk order is inserted into each function, and therefore each object file is protected and the whole software is protected. The invention further discloses a system for protecting the object files. The system comprises an analysis module, a disassembling module, a deformation module, a junk order insertion module and a repairing module. According to the method and system for protecting the object files, the object files are protected, the protection range can be widened, the difficulty of disassembling and analyzing is increased, and the safety of the software is greatly improved.

The invention discloses a sudden death early-warning method, device and system. The method comprises the steps of 1, extracting and detecting physiological information, wherein respiration, oxyhemoglobin saturation, heart rate and heart rate variability information of a testee are extracted, and totally the 6 monitoring indexes of the respiratory rate, the AHI index, the arterial oxygen saturation, the heart rate, the Poincare map indexes SDI and SD2 are obtained; 2, detecting abnormity of the physiological information, wherein various kinds of physiological information obtained in step 1 aresubjected to abnormity detection and early-warning level calculation; when abnormity is detected, step 3 is executed if the result shows abnormity, and detection continues if the result shows normality; 3, conducting sound, light and vibration alarming, wherein an alarm apparatus is driven to give out sound, light and vibration, and the corresponding early-warning level is offered; it shows that the higher the early-warning level is, the higher the risk of sudden death is, and when the early-warning level is larger than 3, the testee needs to see a doctor, and if the early-warning level is larger than 5, the testee needs to see a doctor urgently. The sudden death early-warning device comprises a respiratory sensor module, an oxyhemoglobin saturation sensor module, a heart rate sensor module and a microprocessor module.

A dual-frequency injection-typed generator stator grounding protection method pertains to the field of power system main equipment relay protection technology. Firstly the generator operation frequency is detected; when the generator operation frequency is more than 10Hz and less than 40Hz, the injection power frequency is taken as 100Hz; when the generator operation frequency is not more than 100Hz or not less than 40Hz, the injection power frequency is taken as 20Hz. According to the injection frequency, a shift switch selects a corresponding 100Hz bandpass filter or 20Hz bandpass filter so as to inject an injection signal to the neutral point of the generator by a secondary side winding of a distribution transformer through the filter. The injection frequency signal of secondary side pressure and current quantitatively calculates the grounding fault resistance of the generator. The method adopts the dual-frequency injection to eliminate the signal influence of the generator body, protect the operation dead zone and achieve the stator grounding protection in the whole process of starting and shutting the generator, which can be used for stator grounding protection of large-scale generator set, pumped storage unit or gas turbine set.

The invention provides a current protection method for a power distribution network containing a distributed photovoltaic power supply. The current protection method comprises the steps of arranging a longitudinal differential current protection device at an upper-stage circuit of a photovoltaic access point, and arranging three segmental adaptive current protection devices I / II / III at a system power supply side; judging whether a fault type is in two-phase circuit short or three-phase circuit short and correspondingly determining a coefficient Kd of the fault type by the adaptive current protection device after a fault occurs in the power distribution network; judging a two-phase or three-phase fault and protecting back-side impedance of the device and an electromotive force of a back-side equivalent power supply by the adaptive current protection device; and calculating protection action setting values of three segments I / II / III on line, taking corresponding protection action, and respectively judging a fault direction and taking corresponding protection action by each longitudinal differential current protection device. The protection method is free from a system running mode, each protection device can be enabled to accurately act, and the working reliability is high.

The invention relates to an auxiliary protection gas hood of an automatic TIC welder head, and belongs to the field of machining. The auxiliary protection gas hood aims to solve the problem that oxidation of metal welding occurs easily near a welding pool in the welding process due to a small protection range of a welding nozzle of a traditional welder. According to the auxiliary protection gas hood, argon enters the auxiliary protection gas hood through a gas-guide tube, the turbulence phenomenon of the argon is reduced through filtering of a first netted plate and a second netted plate, and the argon around a welding gun forms a stable auxiliary argon flow field, so that the area outside of the nozzle of the welding gun and inside of the auxiliary protection gas hood is in the effective protection range of the argon, a good protection effect is achieved at the two sides of the welding pool in the automatic welding process of the easily oxidized metal tungsten electrode argon arc, and oxidation of titanium alloy and other easily oxidized metal is avoided. In the welding process, the auxiliary protection gas hood of the automatic TIC welder head and the welding gun form a whole, and the auxiliary protection gas hood swings along with the welding gun. The auxiliary protection gas hood of the automatic TIC welder head is suitable for the welding of the titanium alloy and other easily oxidized metal.

A saddle ride type all-terrain vehicle includes left and right front wheels supported independently of each other on a vehicle body such that driving power is transmitted to said front wheels by way of a pair of left and right drive shafts extending from a driving source side. The vehicle also includes universal couplings provided at opposite end portions of each of the drive shafts, covered by rubber boots. The vehicle further includes a protector for covering the rubber boots.

The embodiment of the invention discloses a method for embedding watermark information, comprising the steps of: in accordance with impact degree to contents of a video or an image, branching the data of the video in the same group of images or in the image to key data and non-key data; generating the watermark information in the key data; embedding the watermark information into the non-key data. In addition, the embodiment of the invention also discloses a method and an apparatus for detection of the watermark information. The invention can branching the data of the video in the same group of images or in the image to key data and non-key data in accordance with impact degree to contents of the video and the image, and not only enlarges protective scope of the watermark information, improves protective ability of the watermark information to the video or the image, but also effectually lessens visual influence of the watermark information to the video or the image by embedding the watermark information generated in the key data into the non-key data.

A distribution switchgear has an equipment room, main busbar room and cable room, which are formed in a distribution panel housing by partitioning the housing, from front to back such that the equipment room is located just behind the front door of the housing, with the busbar room behind the equipment room. In the equipment room, are disposed a circuit breaker, a current transformer on a load side of the circuit breaker and a zero-phase-sequence current transformer on a power supply side of the circuit breaker. The equipment units are vertically arranged in the equipment room. In the busbar room are a solid-insulated main busbar, a solid-insulated link busbar connected with the main busbar and connected with one side of each of the equipment units and a solid-insulated branch busbar connected with the other side of each of the equipment units.

A distribution switchgear has an equipment room, main busbar room and cable room, which are formed in a distribution panel housing by partitioning the housing, from front to back such that the equipment room is located just behind the front door of the housing, with the busbar room behind the equipment room. In the equipment room are disposed a circuit breaker, a current transformer on a load side of the circuit breaker and a zero-phase-sequence current transformer on a power supply side of the circuit breaker. The equipment units are vertically arranged in the equipment room. In the busbar room are a solid-insulated main busbar, a solid-insulated link busbar connected with the main busbar and connected with one side of each of the equipment units and a solid-insulated branch busbar connected with the other side of each of the equipment units.

The invention provides a chamber liner which is used for lining in a semiconductor chamber. The liner comprises a side wall, the shape and the size of which match with those of the inner wall of the semiconductor chamber, and the side wall of the liner is provided with a shield pore. The chamber liner provided by the invention is suitable for the side pulling semiconductor chamber, and film accumulation generated on the inner wall of the chamber can be reduced or even avoided, thus protecting the inner wall of the chamber effectively, reducing particle contamination and further improving the processing / treating quality of semiconductor devices, wafer, etc.

In an airbag provided in a folded condition, a front end of the airbag includes a pulled-out section provided by pulling out the end of the airbag. In the airbag in a stored condition, an oblique path from a front end of the airbag to a fixed point of a front pillar can be reached by the pulled-out section. In the developed condition of the airbag, the pulled-out section can further draw the position of the front end of the airbag to the front side, thereby providing an increased protection range by the airbag.

The invention relates to an acoustooptical bird dispelling device. The acoustooptical bird dispelling device comprises a windmill and a box body, wherein the windmill is provided with a light-emitting lens and is arranged on a windmill shaft; a first reduction gear is arranged on the upper part of the windmill shaft positioned in the box body; the lower part of the windmill shaft is connected with a bearing; the first reduction gear is meshed with a second reduction gear; a convex shaft is arranged below the second reduction gear; a shifting fork is arranged on one side of the convex shaft; a sounding barrel is arranged nearby the shifting fork; a charge control module and a lithium battery are also arranged in the box body; the charge control module is connected with the lithium battery; a solar panel is arranged on one side above the box body and is connected with the charge control module; a light perception flash apparatus is arranged on the other side above the box body and is connected with the lithium battery. Wind power is used for reflecting light and sound, solar energy is used to charge, and red and white flash is performed at night, so that a bird is not hurt but can be dispelled, bird damage is effectively avoided, and power supply reliability is improved.

A vehicle hurdle of a bottom raised type is provided, which comprises a buffer, a wire rope and a baffle screen; two ends of the baffle screen are connected with the buffer fixed at two sides of tramroad by the wire rope; a baffle screen holding room is arranged at the lower part of the tramroad of mine working, the upper part of which is provide with a rail bridge which can be started and stopped; the side part of the baffle screen holding room is provided with a baffle screen lifting mechanism. The rail bridge can be started by a starting and stopping mechanism arranged at the side of the baffle screen holding room and can also connect the baffle screen and can be lifted with the baffle screen. The baffle screen can adopt a rotation starting method or a vertical lifting method. The wire rope of the buffer screen is arranged on the ground of two sides of laneway; the buffer screen moves under the rail and the height of the moving is lower than the height of tramcar, which takes no space at the top and two sides of the laneway; as the baffle screen is not started to place and the material of the mine vehicle is too wide, the baffle screen can not cause mine vehicle to scrap the screen. furthermore, as the starting and stopping travel of a bottom raised type buffer screen is shorter than a top raised type buffer screen, the start-up time is shortened, dead work space is effectively reduced and protection scope for running vehicle is increased.

The embodiment of the invention provides a display panel and a manufacturing method thereof and a display device. The display panel comprises a nano light splitting film arranged between an array substrate and a first Polaroid. The nano light splitting film comprises a plurality of light splitting units distributed in an array, and each light splitting unit corresponds to at least one sub-pixel unit. Each light splitting unit comprises a multi-order grating structure and is used for splitting light corresponding to at least one sub-pixel unit to obtain light in one or more preset colors. A nano light splitting element is applied to the display panel so that a color film layer of a liquid crystal display device can be omitted, transmittance of the liquid crystal display device is increased, and color quality of the display device is improved on the condition that cost is not greatly increased.

The invention discloses an adherence air device for preventing high-temperature corrosion of a water cooling wall of a refuse burning boiler. The adherence air device comprises an adherence air box and an adherence air nozzle, wherein one end of the adherence air box is connected with the adherence air nozzle; the other end of the adherence air box is connected with an air pipe; the adherence air nozzle comprises a nozzle fin, a front baffle, a bottom baffle, a water cooling wall pipe and a water cooling wall fin; the front baffle is composed of an inlet baffle, a reducing baffle and an outlet baffle; a blowing slit is formed on the outlet baffle; and a water cooling wall slit is formed by taking down the water cooling wall fin between two corresponding adjacent water cooling wall pipes. The adherence air nozzle adopts a reducing design, smoke is sprayed out from one side of a main smoke direction, and the adherence air direction is the same as the axial direction of the water cooling wall pipe; and with an injection area, the device realizes stable and reliable formation, little flow resistance, long conveying distance and large protection range. The device does not need multi-layer arrangement, causes little influence on the burning heat transfer of the original boiler, and effectively solves the problem of high-temperature corrosion of the water cooling wall of the refuse burning boiler.

The invention discloses a corona-free lightning rod, comprising an upright column, lightning attraction electrodes arranged on the top end of the upright column, a horizontal grading ring arranged on the upright column and supported by a horizontal support rod and an inclined support rod, and a discharge cavity and a fixed chassis which are arranged under the upright column, wherein the lightning attraction electrodes are connected with the discharge cavity through the upright column, the lightning attraction electrodes include a main lightning attraction electrode (1) and auxiliary lightning attraction electrodes (2), the auxiliary lightning attraction electrodes are arranged on the periphery of the main lightning attraction electrode, the support rods are semiconductor support rods, the main lightning attraction electrode and the auxiliary lightning attraction electrodes are fixedly arranged on a spherical uniform field ball (3), and the uniform field ball is fixedly arranged on the top end of the upright column; and the grading ring is fixedly arranged on the periphery of the lightning attraction electrodes and is 5 cm lower than the tip ends of the lightning attraction electrodes. The invention provides a corona-free lightning rod based on changing space electrical field distribution, and further, the lightning effect is greatly increased, the lightning protection is reliable, the manufacturing is easy, and the mounting and construction are convenient.

The invention discloses a control system and a control method for a fire-fighting water monitor including multiple sensors, wherein the control system for a fire-fighting water monitor includes a detection front end, a signal processing module, a main controller, a field control box, a central control, a motor drive control and a linkage device ; The detection front end is composed of infrared camera, color camera and ultraviolet sensor; the infrared camera, color camera and ultraviolet sensor are connected to the main controller through the signal processing module; the main controller is respectively connected with the field control box and the central control, and the main controller is also It is driven and controlled by the motor; the linkage device includes a water pump, a solenoid valve and an alarm system. When extinguishing a fire, the main controller starts the pump and opens the valve to extinguish the fire and gives an alarm. The invention combines the heat radiation signal of the flame with the visual signal to reduce the misoperation rate of the water cannon, and can protect the scene in all directions and in all directions, with large protection range, accurate judgment and quick response.

The invention relates to a lightning rod. The lightning rod comprises a rod body, angle steel and an adjusting bolt, wherein the angle steel is fixed on a tower head of a power transmission iron tower by bolts and is grounded; the angle steel is provided with an adjusting slideway; the adjusting bolt is arranged on the adjusting slideway by adjusting a lock nut; and the tail end of the rod body is fixed by bolts after penetrating through the adjusting bolt. The adjusting slideway is arc-shaped. The adjusting slideway is straight line-shaped. The lightning rod comprises the rod body, the angle steel and the adjusting bolt, the angle steel is fixed on the tower head of the power transmission iron tower by the bolts and is grounded, the angle steel is provided with the adjusting slideway, the adjusting bolt is arranged on the adjusting slideway by adjusting the lock nut, and the tail end of the rod body is fixed by the bolts after penetrating through the adjusting bolt. An angle of protection can be adjusted through the adjusting bolt, so that the protective range of a lightning conductor is widened, the problem that circle lightning poses a threat to the iron tower and insulators and conducting wires thereof is solved, and the iron tower and the insulators and conducting wires thereof are effectively protected.

The invention provides a step combined lightning electromagnetic neutralizer matrix. The step combined lightning electromagnetic neutralizer matrix comprises a plurality of lightning electromagnetic neutralizers (6), wherein each lightning electromagnetic neutralizer (6) comprises a lightning receiving device (1), a variable capacitor (2) and a conductor (3), the top of the variable capacitor (2) is connected with the lightning receiving device (1), the bottom of the variable capacitor (2) is connected with ground via the conductor (3), and the variable capacitors (2) of all electromagnetic neutralizers have different level thresholds and are arranged in a lightning prevention region in a step way according to the sizes of the thresholds. By the lightning electromagnetic neutralizer matrix, thunderclouds on different scales and from different directions can be warned in advance, charges of a thundercloud cluster are promoted to move highly by induction to neutralize charges of the thundercloud cluster, so that the intensity of discharge instantaneous current pulse of the thundercloud cluster is reduced.

The invention discloses a UWB-array-based automatic obstacle avoidance system and method for a drone. The system comprises a collecting unit, a receiving unit, a judging unit, a control unit and an actuator. UWB range sensor arrays assembled in the collecting unit in multiple directions collect the distance data between an obstacle and a drone body, the receiving unit receives the sensing data transmitted by the collecting unit, the judging unit resolves the distance data transmitted by the UWB sensors into distance, the course of the drone is changed into preset course when the distance is smaller than preset distance, and flying height and flying attitude are regulated to avoid the obstacle. The system has the advantages that the problems that the drone cannot avoid the obstacle under a narrow scene and cannot achieve comprehensive obstacle avoidance in the prior art are solved, the system is reliable, real-time, accurate and capable of effectively preventing drone body damage and preventing the drone from destroying other objects during flight, and the like.