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

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 described here concerns the unique utility of fatty acids and their derivatives to eradicate existing fungal and bacterial infections in plants. Also, described herein are combination treatments whereby fatty acids are used to enhance or augment the activity of fungicides, bactericides, and biological control agents.

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.

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.

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 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.

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.

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 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.