150results about How to "Play the role of double protection" patented technology

The invention discloses a method for using quantum keys to improve safety of electric power information transmission in a power system WiMAX wireless communication network. According to the method for using the quantum keys to improve safety of electric power information transmission in the power system WiMAX wireless communication network, due to the fact that the quantum key distribution technology is applied to the power system WiMAX wireless communication network, safety of information transmission of a power system is improved; the scheme that a quantum key distribution network and the power system WiMAX wireless communication network are combined is adopted, the unconditionally safe quantum keys are applied to the power system WiMAX wireless communication network, pre-encryption is carried out on data needing to be transmitted by using the quantum keys on the premise that the IEEE802.16 protocol in the WiMAX technology is not modified, another encryption is carried out on a ciphertext generated through pre-encryption by using the encryption technology in the WiMAX wireless network, the effect of double protection on information transmission in the electric power system is achieved, convenience and rapidness are achieved, and safety of wireless communication of the electric power system is improved to the maximum extent.

The invention relates to an algal oil DHA (Docosahexaenoic Acid) microcapsule, which consists of algal oil DHA, an antioxidant and a shell material. The antioxidant is prepared from VC (Vitamin C) palmitate, lecithin, carnosic acid, VE (Vitamin E) grease and citric acid based on the mass ratio of (40-60):(25-35):(5-10):(3-7):1 sequentially, and the dose of the antioxidant is 0.6-1.2% of the mass of the algal oil DHA; the shell material is prepared from modified starch, Arabic gum, cane sugar, maltose and vitamin C-sodium based on the mass ratio of (10-30):(5-10):(1-5):(1-3):1 sequentially, and the dose of the shell material is 60-70% of the mass of the algal oil DHA. The invention further discloses a preparation method of the algal oil DHA. According to the invention, the oxidation of the algal oil DHA is effectively slowed down, odor smell is covered, the stability of products is increased and the effect duration is prolonged.

The invention discloses a heating floor. According to the technical scheme, the heating floor comprises a plurality of spliced floor plates. Each floor plate mainly comprises a base plate, a surface layer and a conductive heating layer arranged between the base plate and the surface layer. Copper foil is arranged between the conductive heating layer and the base plate. Two sides of the base plate are provided with through holes. Two sides of the conductive heating layer and the copper foil, opposite to the base plate, are respectively provided with contacts. Leads are respectively connected by contacts and penetrate through the corresponding through holes on the base plate, leads on one side is connected with a sealing plug, and leads on the other side is connected with a sealing socket. The heating floor is higher in safety, low in cost, convenient to mount and mainly applied to indoor warming.

The invention discloses regenerated cellulose fibers containing ceramide micro-capsules and a preparation method of the regenerated cellulose fibers. Raw materials of the regenerated cellulose fiberscomprise viscose spinning fluid and the ceramide micro-capsules, and capsule cores of the ceramide micro-capsules comprise ceramide and glycerinum. The preparation method comprises the steps of mixingceramide micro-capsule dispersion fluid with the viscose spinning fluid and then carrying out wet spinning on the mixture to obtain the final product. The ceramide is prepared into the micro-capsulesby a micro-capsule wrapping technology, and then the micro-capsules are added in the viscose spinning fluid to obtain skin-caring and moisturizing viscose fibers.

The invention discloses an outside rear-view mirror which comprises a mirror frame, a flexible lens, a scraping blade and rolling shafts, wherein the outside rear-view mirror further comprises a gear and a motor driving the gear to rotate; the rolling shafts comprise a first rolling shaft and a second rolling shaft; the flexible lens is of a sleeve shape and is arranged on the first rolling shaft and the second rolling shaft in a sleeved mode, the flexible lens is provided with racks connected end to end, and the racks are meshed with the gear; the gear is used for driving the flexible lens to rotate around the rolling shafts through the racks, and the scraping blade is used for scraping objects on the outer surface of the flexible lens. According to the outside rear-view mirror, the sleeve-shaped flexible lens is adopted, the motor drives the flexible lens to rotate, therefore, water or other impurities on the flexible lens fixed on the mirror frame are scraped, the problem brought by water scraping carried out by a traditional rocker arm type scraping blade is solved, and the problems that a small part of the surface of a traditional lens cannot be cleaned, and the scraping blade shields a part of the visual field in the operating process are resolved.

The invention provides a pneumatic fastener gun for internal fracture fixation. The pneumatic fastener gun comprises a gun body, a gun grip, a protective device, a fastener clamp device and a pneumatic device, a button is arranged at the head position at the joint of the gun grip and the gun body, and the tail of the button is embedded into the gun grip. The pneumatic fastener gun for internal fracture fixation is characterized in that the protective device comprises a protective cover and a protective cover connecting rod connected with the protective cover, the protective cover covers the head of a fastener passage device, a through hole is formed in the middle of the protective cover, and the tail end of the protective cover connecting rod contacts with the tail, embedded into the gun grip, of the button. The pneumatic fastener gun for internal fracture fixation has the advantages that the pneumatic fastener gun is simple and convenient to use and accurate when being used for fixing the fracture part and is capable of fixing the minimally invasive part effectively; the structure that the protective cover is matched with the button is equivalent to two triggering devices, a user who wants to shoot a fastener needs to enable a gun barrel to be aligned with the surface of the facture part by pressing while pressing the button, and accordingly, double protection effect and more safety in use are achieved to avoid misoperation during surgery.

The invention provides a panel structure of a concrete panel rock-fill dam. The panel structure comprises panel units which are arranged on a stone dam body slope surface, wherein a gasket layer region and a transition layer region are sequentially laid between the panel units and the stone dam body slope surface from outside to inside; supporting piers are arranged between the panel units and dam body enrockment; rubber supporting bases are arranged among contact surfaces of the panel units and the supporting piers; and a water stop device is arranged between every two adjacent panel units. According to the panel structure provided by the invention, influences, on panel cracking failure, of uneven stress deformation of a dam body are effectively alleviated in a mode of transmitting force through the rubber supporting bases and bearing force through the supporting piers; the bottom surface of the concrete panel is pasted with carbon fiber cloth, so that strength of the panel is greatly improved, and permeability of the panel is reduced; water stop facilities of the panel structure are good in water stop effect; and a reinforced concrete face slab of the panel structure is prefabricated, so that project progress can be effectively quickened, and quality of the panel also can be guaranteed.

The invention relates to a transaction data backup method in an automatic fare collection system. The method comprises the following steps of: reading the latest transaction record stored in a ticket card; writing a traction record generated by a local terminal into the ticket card; and uploading the serial number of the ticket card, the latest transaction record and the generated transaction record to a central database. In addition, the invention also provides a transaction terminal in the automatic fare collection system. By adopting the method and the transaction terminal, before the transaction record generated by the local terminal is written into the ticket card, the latest transaction record stored in the ticket card is read, and the latest transaction record and the generated transaction record are transmitted to the central database. Even if a previous transaction record is not uploaded by a previous transaction terminal to the central database at the time of transaction, the previous transaction record can be uploaded by the current transaction terminal to the central database. The effect of dual assurance can be achieved, and losses of transaction data in the automatic fare collection system can be avoided.

The invention discloses an embedded software watchdog design method and device, an equipment computer storage medium, and the method comprises the steps: starting a first timing task of a kernel, feeding a dog regularly through the first timing task, and detecting the dog feeding state of an application layer; starting a second timing task of the application layer, feeding dogs regularly through the second timing task, and detecting the dog feeding state of the inner core; and when the first timing task detects that the dog feeding state of the application layer is abnormal or the second timing task detects that the dog feeding state of the kernel is abnormal, triggering a reset signal, and restarting the system. Mutual detection of the kernel and the application layer is achieved, an interlocking mechanism is formed to play a double protection role on the system, and more reliable restarting of the system under abnormal conditions is achieved in the embedded system.

The invention provides a composite protection method for a magnesium-lithium alloy surface and a special epoxy/nano SiO2 paint. The method comprises the following steps: synthesizing a novel epoxy/nano SiO2 paint; pretreating the surface of the magnesium-lithium alloy; carrying out phytic acid conversion on the surface of the magnesium-lithium alloy to form a phytic acid conversion film on the surface of the magnesium-lithium alloy; and coating and compounding the epoxy/nano SiO2 paint on the phytic acid conversion film of the magnesium-lithium alloy. The introduction of nano SiO2 is beneficial to improving the corrosion resistance of the epoxy paint. At the same time, the unimolecular organic film layer formed by phytic acid conversion and the coating formed from the epoxy/nano SiO2 paint have similar chemical properties, and the cohesive properties of the both are enhanced, thereby being beneficial to forming a stable and compact protective layer on the surface of the magnesium-lithium alloy to have a dual protection effect on the magnesium-lithium alloy and further improving the corrosion resistance of the magnesium-lithium alloy. Thus, the corrosion potential of the magnesium-lithium alloy is increased by 0.8-1.2VSCE, and the corrosion current is reduced by 4-6 orders of magnitude.

The invention discloses a switchboard protective mechanism for welding robots, which comprises a protective cover plate, an arm cylinder, a mounting rack and a pressure arm, wherein the arm cylinder is mounted on the mounting rack, one end of the pressure arm is connected with the swing arm of the arm cylinder, the other end of the arm is connected with the protective cover plate, the contact partbetween the protective cover plates and the switch board is made of flexible materials. The switchboard is disposed on the welding tongs, the mounting rack is provided with a storage mechanism for placing the welding tongs, the welding tongs are stored on the storage mechanism and the protective cover plate is fitted with the switchboard. The protective cover comprises a substrate and a flexiblecover plate, the flexible cover plate contact with the switchboard. The flexible cover material is the fireproof cotton with the characters of being soft, fire-resistant and cushioning. The fireproofcotton has the advantages of not being burned in the welding workshop; being soft enough to not cause damage to the electrical components in the switching disc after fitting and to let the electricalcomponents embed in the flexible cover. The invention also discloses a method for the application of switchboard protective mechanism for welding robots.

The invention provides a cable laying traction apparatus which comprises a driving system, a traction force adjusting system, a traction system and an electric interlocking control system. The traction force adjusting system can control pressure between a driven friction wheel and a driving friction wheel, the driving friction wheel and the driven friction wheel can relatively slide when the traction force exceeds a set value, and the electric interlocking control system can set the maximum output traction force as needed and realize interlocking shutdown and effective braking when the traction force exceeds the set value. The cable laying traction apparatus can monitor the traction force in real time, shutdown protection is performed when the traction force exceeds the set value, damage to a cable due to excessive traction force is completely eliminated, and construction efficiency is effectively improved by the aid of a double-speed motor. The construction cost of enterprises is effectively reduced, and the laying quality of the cable is greatly improved.

The present invention provides a hot-swappable circuit, an interface circuit, and electronic equipment. The hot-swappable circuit includes: a first-level protection unit for consuming and absorbing transient high-voltage spikes generated at the moment of hot-swapping; and a second A first-level protection unit, connected in parallel with the first-level protection unit, used to consume and absorb the remaining transient high-voltage spikes when the remaining transient high-voltage spikes consumed and absorbed by the first-level protection unit are greater than a preset voltage At the same time as the spike pulse, the voltage across it is clamped. Through the hot-swappable circuit, interface circuit and electronic equipment of the present invention, the problem that the existing X-ray flat panel detector burns the devices in the subsequent circuit during the hot-swappable process is solved, causing the X-ray flat panel detector to fail to work normally question.

The invention discloses a lifting mechanism of a mechanical stereo parking device in the technical field of stereo garages. The lifting mechanism comprises a vertical frame, wherein the top of the vertical frame is provided with a cross beam frame, two sides of front and back beam arms of the cross beam frame are symmetrically provided with rotary shafts through bearings in a penetrating way, theinner side of the cross beam frame is provided with four groups of reels, the reels are arranged at two ends of the bilaterally symmetrical rotary shafts respectively, and the upper end of the right side of a front beam of the cross beam frame is provided with a first motor. Shaking of a vehicle carrying plate can be controlled by an arranged rack-gear lifting mechanism, so that the vehicle carrying plate is stable and reliable in the lifting process, additional abrasion produced by shaking is decreased, movement of the vehicle carrying plate can be found in time and controlled through an arranged rope breakage early-warning device, and accordingly a vehicle is protected. It is monitored in real time through an arranged speed sensing device whether the rotation speed of a gear is normal ornot, a signal can be sent out to control the position of the vehicle carrying plate when the rotation speed is abnormal, and a dual protect effect is played.

The invention relates to the field of electric power construction, in particular to a tightening instrument for power transmission and distribution lines. A tightening instrument for power transmission and distribution lines comprises a tightening instrument body, wherein the tightening instrument body comprises a positioning hook (1), a tightening gear (2), a handle (3), and a hook (4); the positioning hook (1) ) is connected to one end of the tightening gear (2), the hook (4) is connected to the other end of the tightening gear (2) by a twisted wire, and the handle (3) drives the tighteninggear (2) to rotate; the tightening instrument body is provided with a tension sensor (5) for measuring the tension on the positioning hook (1), and the tension sensor (5) is connected with a dynamic resistance strain gauge (6) that is provided with a tension display module (7). The invention can guide the state of wires while being tightened, thereby avoiding the wires being too tight or too loose.

The invention discloses an engine flow resistance testing device and a testing method thereof. The engine flow resistance testing device comprises an ultrasonic wave flow sensor, a mounting mechanismfor mounting the ultrasonic wave flow sensor on an engine, a processor for processing acquired information, and a display device. The ultrasonic wave flow sensor is connected with the processor through a data wire I. The processor is connected with the display device through a data wire II. The mounting mechanism comprises a mounting bracket, a sensor mounting chamber and a fixing mechanism. The sensor mounting chamber is connected with the mounting bracket. The ultrasonic wave flow sensor is mounted in the sensor mounting chamber. The fixing mechanism is arranged on the mounting bracket. Themounting bracket is provided with a track. A mounting chamber I is slidably connected with the track. The whole sensor mounting chamber can move along the track. The ultrasonic wave flow sensor can befinely adjusted in a horizontal plane. The testing device and the testing method according to the invention are used for testing the flow of each oil duct of the engine, thereby substantially understanding true data of each oil duct flow resistance (namely oil consumption) and performance of the engine.

The existing flexible package lithium ion battery utilizes flexible package cell external connection with PTC and has poor fixing stability and easily causes outer tab short circuit and external PTC welding spot shedding in collision or impact so that a protection function is easily lost. In order to solve the above problem, the invention provides a flexible package lithium ion battery and a manufacturing method thereof. The flexible package lithium ion battery comprises a flexible package cell, PTC, a first electrode slice, a second electrode slice and a flexible package casing prepared from a plastic-aluminum composite film. The flexible package cell and the PTC are packaged in the flexible package casing. The first electrode slice and the second electrode slice stretch out of the flexible package casing. Compared with the existing flexible package lithium ion battery using an external PTC way, the flexible package lithium ion battery prevents PTC failure, realizes reliable protection and has high safety.

The invention provides a drainage type laryngeal mask which can prevent stomach secretions from entering a trachea. The drainage type laryngeal mask is provided with a laryngeal mask component and a drainage component which is arranged on the laryngeal mask component along the extending direction of the laryngeal mask component, wherein the laryngeal mask component is provided with a mask bag body, a connecting pipe body and an air source connector; the connecting pipe body is connected with the mask bag body and the air source connector is connected with the connecting pipe body; the mask bag body is provided with an airbag and an airbag connector which is enclosed by the airbag and is used for connecting the airbag and the connecting pipe body; the airbag comprises a front surface bag part and a back surface bag part; the front surface bag part covers the periphery of the trachea; the back surface bag part is positioned on the opposite side of the front surface bag part and covers a throat wall; the outer surface of the back surface bag part is more outwards convex than the outer surface of the airbag connector; the drainage component is provided with a drainage pipe and a ball bag arranged at an inserting end of the drainage pipe; a groove is respectively formed in the surface of each of the mask bag body, the connecting pipe body and the air source connector; when the mask bag body, the connecting pipe body and the air source connector are connected together, the grooves are communicated with one another, and the drainage pipe is continuously arranged in the grooves which are communicated with one another.

The invention discloses an overturning double-door clamping lock for a lift platform which comprises a first door leaf and a second door leaf, wherein the second door leaf is rotationally arranged atthe left side of the first door leaf, and the edge of the left end of the first door leaf is fixedly provided with a first vertical door frame. A first horizontal door frame is fixedly arranged at theedge of the top end of the first door leaf, an elastic tensioning device is arranged near the top end portion of the front end face of the first vertical door frame, and the outer side of the upper end of the first horizontal door frame is sleeved with a double-door clamping lock body. Through the installed double-door clamping lock body, the double-door can be locked, so that the door leafs of the double-door cannot exceed the table surface of the lift platform and the danger of the door leafs colliding with other equipment outside the lift platform can be avoided. Through the installed elastic tensioning device which can apply tension to a tensioning rope, and the guide effect of a guide wheel, the tensioning rope can apply tension to the double-door clamping lock body, so that the double-door can be locked more effectively.