41results about How to "Slow recovery" patented technology

A recovery process allows a recovering replica in a replicated data storage system to recover from a current replica the changes to the data that it has missed during a failure while, at the same time, the system is processing new requests issued by the source. Sequence numbers, assigned by the source to write requests and stored by each replica in association with the data item that the write request modifies, are used by the recovery process to determine when a replica has missed one or more write requests and requires recovery. During recovery, the recovering replica ignores all requests directly received from the source, and replaces the contents of a data item with the data received from the current replica only if the newly received data item has a higher sequence number than the corresponding sequence number of the data item already stored in the recovering replica. It also updates data items in response to new write requests that are forwarded to it by the current replica. At the same time, the current replica continues to receive requests from the source, performs those requests, and forwards those write requests to the recovering replica. It also scans its data items and sends to the recovering replica those data items and associated sequence numbers that have a sequence number higher than the sequence number of the last consecutive write request sent by the source that the recovering replica received before missing a write request.

The invention relates to a vision-based vehicle positioning method and a parking lot management system applying the same, and belongs to the field of informatization. The method comprises the following steps: (1) position calibration: establishing a three-dimensional world coordinate system and a parking space plane electronic map of a parking lot, performing position calibration on a unique identifier in the parking lot, and storing a three-dimensional world coordinate and a two-dimensional image plane coordinate of each parking space number; (2) image acquisition: acquiring environment information around the vehicle body by using a vehicle-mounted camera; (3) serial number identification: analyzing and processing acquired images to complete parking space serial number identification; and(4) position calculation: reading corresponding two-dimensional image coordinates and three-dimensional world coordinates according to the identified garage number, and obtaining the position of thecamera by utilizing an algorithm used by the camera so as to realize positioning. According to the invention, parking space management and empty parking space searching functions can be realized, andthe problem of slow recovery of vehicle ex-garage satellite signals is solved. The parking and vehicle taking experience of users can be better improved.

The invention belongs to the technical field of coatings, and specifically relates to a graphene-silver antibacterial and antifouling fluorocarbon coating, and a preparation method and an applicationthereof. The graphene-silver antibacterial and antifouling fluorocarbon coating comprises a component A and a component B, wherein the component A comprises the following components: fluorocarbon resin, a wetting dispersant, a leveling agent, an antifoaming agent, a thixotropic agent, a graphene-silver composite nanometer material, titanium dioxide, precipitated barium sulfate, quartz powder, butyl acetate and propylene glycol methyl ether acetate; and the component B comprises an isocyanate curing agent. According to the invention, due to introduction of the graphene-silver composite nanometer material, a paint film has good adhesion force, impact resistance, hydrophobicity, stable broad-spectrum antibacterial property and antifouling property; in addition, through selection of the fluorocarbon resin with a fluorine content of no less than 26%, glossiness, aging resistance and mechanical properties of the paint film are improved; meanwhile, low surface energy of the paint film is guaranteed; and the paint film prepared from the coating provided by the invention has strong hydrophobicity.

The present invention discloses an active and passive combined lower limb rehabilitation training device, and relates to the technical field of rehabilitation training devices. The active and passivecombined lower limb rehabilitation training device comprises a base seat, a bed body horizontal lifting structure fixedly arranged on a top part of the base seat and provided with a bed body supporting frame, a bed body hingedly connected with one end of the bed body supporting frame, a lower limb training mechanism fixedly connected with the bed body and a bed body turning mechanism with one endhingedly connected with the bed body horizontal lifting structure and the other end connected with the bed body. The lower limb training mechanism comprises a driving device fixedly connected to a front side and a rear side of a lower surface of the bed body, a double-leg width adjusting device fixedly connected to an upper surface of the bed body and leg bending and stretching mechanisms, and oneends of the leg bending and stretching mechanisms are connected with the double-leg width adjusting device, and the other ends of the leg bending and stretching mechanisms are hinged to the driving device. The active and passive combined lower limb rehabilitation training device is simple, facilitates active and passive training of a patient, is also easy and convenient to adjust, enlarges adjustment angles of the body of the patient, is convenient for the patient to find a most comfortable rehabilitation training posture, and enables the gravity center of the patient to be stable.

The invention discloses a joint fluid drainage irrigator which comprises an irrigation channel and a puncture needle rod inserted in the irrigation channel. An irrigation handle is arranged at the rear end of the irrigation channel; a suction valve is arranged between the irrigation handle and the irrigation channel; and a drainage handle matched with the irrigation handle is arranged at the rear end of the puncture needle rod. The joint fluid drainage irrigator has a novel structure, is convenient to operate and can completely clean the joint fluid in a joint cavity, thereby effectively removing the diseases.

The invention discloses a shock-resistance new energy electric car charging pile. The shock-resistance new energy electric car charging pile comprises a shell body and a core structural element; a second oil cylinder is fixedly connected to the middle of the inner surface wall of the bottom of the shell body through a bolt, the portion, away from the second oil cylinder, of one side of a first piston penetrates through the shell body through a first piston rod and extends to the outer portion to be connected with a buffer plate part, the first piston rod pushes the first piston to move, the oil pressure is increased, along with gradual increasing of the oil pressure, a second piston pushes a second piston rod and the core structural element to ascend, at the same time, a damping spring isstressed and compressed, impact energy is absorbed and offset, the protection effect is further achieved, through the structure, when the impact force is quite large, the core structural element ascends and is away from the collision point, the inner structure of the element is effectively protected, structure damage is avoided, recycling is achieved, the sustainable development concept can be met, and the resource waste can be avoided.

A pocketed spring assembly comprises a plurality of parallel strings of individually pocketed springs. Each string is joined to at least one adjacent string. Each string has first and second opposed plies of fabric and a plurality of pockets formed along a length of the string by transverse segmented seams joining the plies. Gaps between the segments of the seams allow air to pass into and out of the pockets despite the fabric being impermeable to airflow through the fabric. The fabric has at least four layers. The size of the gaps determines the firmness or “feel” of the pocketed spring assembly or portion thereof.

The invention relates to the technical field of preparation of metal protection products and in particular relates to a preparation method of durable type antirust emulsified oil. The preparation method comprises the following steps: mixing self-made reddish brown liquid, urotropin, self-made shinyleaf yellowhorn seed kernel oil and sodium carboxymethyl cellulose and carrying out high-speed dispersion and emulsification to obtain the antirust emulsified oil. The antirust emulsified oil provided by the invention takes the shinyleaf yellowhorn seed kernel oil as an oil phase; the content of unsaturated fatty acid in the shinyleaf yellowhorn seed kernel oil is relatively high; after the surface of metal is coated with the antirust emulsified oil, the separation and absorption capability on oxygen in the air is strong; metal ions can be used for slowly reducing the oxidized unsaturated fatty acid to form a positive cycle, and the antirust emulsified oil keeps relatively strong reduction performance all the time, so that the antirust period of the antirust emulsified oil is prolonged; a matrix corrosion inhibitor doped into the antirust emulsified oil is Mannich base; when the matrix corrosion inhibitor is in contact with the surface of the metal, the matrix corrosion inhibitor has a physical adsorption effect with the metal to form an adsorption layer and rusting reaction is difficult to carry out, so that the antirust performance of the antirust emulsified oil is improved.

The invention relates to the technical field of preparation of demolding agent compositions, in particular to a preparation method of an oily antirust demolding agent. The preparation method comprisesthe following steps of using ginkgo kernels as the raw material, and pulping, so as to obtain a kernel pulp; adding a sodium chloride solution, cellulase and water into the kernel pulp, so as to obtain a kernel extracting solution; treating by ultrasonic waves, centrifuging and separating, so as to obtain ginkgo oil; adding a mixed solution of formaldehyde and acetophenone into a reflux solution,so as to obtain a corrosion inhibitor of a main body; mixing the corrosion inhibitor of the main body with benzyl chloride, so as to obtain a film forming antirust agent; mixing the film forming antirust agent, methenamine, gingko oil, and the like, and dispersing and emulsifying at high speed, so as to obtain the oily antirust demolding agent. The oily antirust demolding agent has the advantagesthat after the oily antirust demolding agent is covered on the surface of metal, the ability of blocking and absorbing oxygen in air is high; the gingko oil can be chelated with one part of oxidizedmetal, so that the adhesion force of the oily antirust demolding agent to the metal is increased; after mannich base is quaternized, and is in contact with the surface of the metal, the active energyin corrosion and rusting reaction is increased, and the application prospect is broad.

The invention provides a method for discriminating hydrophobic migration characteristics of silicone rubber based on different salt components. The method comprises the following steps: respectively preparing soiling solutions with the salt components of NaCl, CaCl2 and (NH4)2SO4 and an ash component of diatomite; testing the hydrophobicity of samples treated by the soiling solutions with different salt components at different migration times, wherein the testing time is 24h, 48h, 96h and 144h after migration respectively; determining a saturation value of a hydrophobic migration angle, calculating indexes of the hydrophobic migration characteristics according to hydrophobic migration testing results, and discriminating the hydrophobic migration characteristics. By the method, the seven indexes of the hydrophobic migration characteristics are creativity used for comprehensively evaluating the characteristics of the silicone rubber; by the method, through a simulation test based on a variety of soiling solutions, the hydrophobic migration characteristics of the silicone rubber are comprehensively evaluated, so that laboratory test results are more closely related to field application.