85results about How to "Increase installation cost" patented technology

The invention is directed to a method of synchronising transmission between two nodes in a wireless network. The method comprises the steps of obtaining an expected interference profile for each node; and agreeing a synchronised transmission schedule between the nodes, where the expected interference profile of the or each node meets predetermined criteria.

An antenna assembly for wireless communications has various components to minimize signal influence when transmitting signals to minimize undesirable loop formation phenomena caused by (positive) feedback of signals. Signal wave scattering and diffraction causing back lobe radio frequency (RF) patterns are minimized by a particular antenna assembly structure having a reflector and at least one attenuating structural member, a metallic mesh wrapping the power cable of a feeder, a non-conductive antenna support structure, or any combination thereof. The dimensions of the various components, in particular the reflector and attenuators, can be varied according to desired wireless communications environment.

The invention discloses an intersection signal optical control method in an environment of Internet of vehicles. A signal timing plan is optimized by combining vehicle state information acquired at a signal intersection in real time, so that the delay time that a vehicle passes through the intersection is shortened. The method disclosed by the invention realizes an actual application of the technology of Internet of vehicles at the signal intersection, thereby favorably improving the traffic efficiency at the signal intersection.

A power distribution controller 50 comprises an electrical path switch 51 and a determining unit 52. The electrical path switch 51 comprises a first switch SW1 inserted between a solar cell 11 and a heating unit 62, and a second switch SW2 inserted between a commercial power system 20 and the heating unit 62. The determining unit 52 determines electrical paths of the electrical path switch 51, based on whether or not a surplus power is present in an electrical power generated in the solar cell 11. Then, the determining unit 52 controls to turn the second switch SW2 in the absence of the surplus power. The determining unit 52 controls to turn the first switch SW1 in the presence of the surplus power. In this way, when the surplus power is generated in the solar cell 11, the surplus power is used for driving the heating unit 62 of a water heater 60. Therefore, the surplus power of the solar cell 11 is stored as heat energy in a hot-water, which is stored in a hot-water tank 61. Therefore, the grid connected system can keep an increase in the cost of installation as low as possible and can use the surplus power of the solar cell effectively by means other than electric power selling.

A Point of sale device, system and computer program for configuration of house automation, including a reader arranged to read an identity associated with a sensor for home automation, an interface arranged to receive input of installation data of the sensor; and a communication module arranged to send the installation data and associated identity of the sensor to a server.

Control data, such as a store-request, and video data are sent via different paths to video storage. More specifically, a load balancer sends the control data from a camera to the storage device, and the camera sends the video data to video storage. By separating the transmission paths of the control data and the video data, it is possible to vary the method for protecting the video storage, depending on the type of data, and to intensively check the control data which are smaller in data quantity, thereby realizing both a high security level and a cost reduction for protecting video storage.

The invention relates to a transformer substation assembly type cable trench body and a pavement method. The transformer substation assembly type cable trench body is mainly formed by connecting a plurality of sections of water-proof reinforced concrete trench bodies with U-shaped transverse cross-sections in sequence; a flange section and a groove which can be connected in tandem are respective arranged at the front and the rear ends of the trench body, a tongue-and-groove lapped back and forth is formed, and a rubber strip is installed between the trench bodies connected in tandem; the pavement method comprises the following steps: the cement bonded sand with thickness of 100 mm is paved on the conventional C15 plain concrete cushion course, and is used for the equalization of the assembly type cable trench body installed later; then the sections of the well prefabricated trench bodies are connected together through the lap-joint tongue-and-groove in sequence, and the rubber strip is underlaid at the connected point; and compared with the prior art, the invention has the advantages of reduced construction period, reduced pavement cost, improved work efficiency and labor productivity, greatly improved appearance quality and better popularization and application values.

A piston (1), wherein the surface roughnesses of the rear surface (10a) of a combustion chamber (10) and the inner wall surface (11a) of a cooling cavity (11) are set to 6.3 S or less (portions a' and b' indicated by chain-double dashed lines), and these portions with the surface roughness of 6.3 S or less are surface-coated with the film of a self-purifying catalyst. Since oil is less accumulated in the surface-coated portions, the caulking of the oil can be suppressed to prevent the coefficient of heat transfer from being deteriorated so as to suppress the rise of temperature, and accordingly, the strength of the piston can be prevented from being lowered by the caulking. As a result, since an increase in the amount of a cooling oil and an increase in the capacity of an oil cooler due to an increase in the output of an engine can be eliminated, the piston (1, 30) for the internal combustion engine simple in structure and capable of easily coping with an increase in the output of the engine can be provided without causing an increase in installation space and cost.

The invention discloses a solar cell module. The solar cell module comprises a cover plate material, a first encapsulation adhesive film, a cell string group, a second encapsulation adhesive film anda back plate material; and the cell string group is formed by connecting multiple cell strings, and each cell string is formed by connecting multiple first cells with at least one second cell, whereinthe back faces of at least one of the multiple first cells are provided with first current export units, and the back faces of the at least one second cell are provided with second current export units. According to the solar cell module, the cells with two different structures are adopted for imbricated connection, the current export units can be lead out from the back faces of the cells, the difficulty of merging diodes is lowered, and the area of the module is not increased; and the fragmentation rate of the solar cells can be decreased, therefore, the module yield is increased, and the module efficiency is improved. The invention further discloses a preparation method of the solar cell module.

A rising water feature that produces a waterfall into a spa, swimming pool, tub, reservoir, or the like, while the device itself is illuminated. In a resting position, the device is retracted and has a generally flat profile relative to the spa surface. In an operation position, the device is extended above the spa surface.

In accordance with an embodiment of the disclosure, A water-proofing laminate includes a drainboard having a first surface positioned against a hydraulic source and a second surface opposed to the first surface, a fastener plate positioned against the second surface of the drainboard securing the drainboard to the hydraulic surface, the fastener plate comprising a conductive element and a thermoplastic resin, and a self-healing hydraulic barrier comprising a thermoplastic surface adjoined to a geotextile and carrying a water-absorbent material, the thermoplastic surface inductively welded to the fastener plate.

The invention provides a vehicle braking method and device based on vehicle weight and gradient self-adaption and a medium. The method comprises the following steps: determining a first forgetting factor corresponding to vehicle weight data and a second forgetting factor corresponding to road slope data; obtaining a forgetting vector; based on the forgetting vector and a preset recursive least square method with a forgetting factor, constructing a corresponding vehicle weight and road slope estimation model; obtaining vehicle weight estimation data and road slope estimation data at the current moment according to the driving state parameters and the vehicle performance parameters of the vehicle at the current moment and the vehicle weight and road slope estimation model; and according to the vehicle weight estimation data and the road slope estimation data at the current moment, determining the brake pedal force and the brake safety distance of the vehicle at the current moment, and conducting vehicle braking based on the brake pedal force and the brake safety distance. Therefore, an emergency braking system can carry out self-adaptive control on the braking safety distance and the braking pedal force according to the vehicle center and slope conditions.

The invention provides an impeller aligning method of a wind turbine generator system, and belongs to the technical field of wind turbine generator systems. The impeller aligning method of the wind turbine generator system comprises the following steps: (S1) a hub of a wind driven generator is mounted on an impeller aligning tool; (S2) three blades are mounted on the hub in sequence; connecting lines between the gravity center positions of blade auxiliary lifters and the gravity center positions of the blades are perpendicular to the blades; blade back edge protectors are mounted in the bladeback edge positions of the blades; the blade auxiliary lifters lift the blades through fixing in the blade back edge positions of the blades; and the blades are rotated and mounted on the hub; (S3) single blade is feathered by 90 degrees until three blades are feathered; and (S4) the blade back edge position of one blade is fixed through the blade auxiliary lifters; the hub is fixed through an impeller main lifter; and the blade auxiliary lifters and the impeller main lifter are matched to balance the impeller to finish the aligning installation of the impeller. The lifting time and the lifting cost can be reduced; and meanwhile, the blade rupture and deformation risks can be reduced.

A system and method for providing backup communications using Power over Ethernet (PoE) are disclosed. A backup communication system (BCS) is provided as part of a networked (TCP / IP) hospital communication system. The BCS is coupled to a power line used to provide power to a PoE switch. When TCP / IP communications are interrupted, the BCS receives patient call signals from patient room terminals over a secondary communication mode of the power line, and transmits those call signals to a nurses' station. The call signals can be generated by coupling a pulse-coded AC signal onto the PoE wires, or by sending voltage coded data in one direction and current-coded data in the other direction. Different signals or signal levels can be used to distinguish normal patient calls, patient emergency calls, and code calls. Thus, basic communications can be achieved when TCP / IP are unavailable. Other embodiments are disclosed and claimed.

The invention provides an installation method of a combined joint with a steel structure, which belongs to the technical field of architectural construction. The installation method mainly comprises the following installation steps of: firstly, welding channel steel 4 additionally at a position on a steel column 1, which is connected with a truss and welding an inner baffle plate 5 at the positions of 80 to 150mm at the inner sides of the end parts of an upper chord 2 and a lower chord 3 of the truss respectively; and then, welding an end sealing plate 6 additionally at the edge of each inner baffle plate 5, welding connecting plates 7 at the lower parts of the end sealing plates 6 and then welding vertical stiffening ribs 8 at both sides of the connecting plates 7 and the end sealing plates 6. During installation, the connecting plates 7 and the channel steel 4 are directly connected by using high-strength bolts 9. By the invention, the combined joint mode of the inner baffle plates 5 and the vertical stiffening ribs 8 is adopted, perforations required by a traditional joint are cancelled, the upper chord and the lower chord of the truss and the wall of the steel column 1 do not need to be welded, the manufacturing process and the manufacturing cost are reduced, force transfer is more definite, the strength of the joint is increased, and the safety coefficient of the steel structure is enhanced.

The invention relates to an installation construction technology of a point-supported glass curtain wall. The installation construction technology comprises a supporting device, a clamping device anda sucking disk gluing device, wherein the clamping device is installed on the right side of an upper end face of the supporting device; the sucking disk gluing device is installed on the left side ofthe clamping device; and the sucking disk gluing device is installed on the left side of the upper end face of the supporting device. The technology provided by the invention can solve the problems that glass curtain walls are generally installed by hoisting during use of existing installation construction technologies of a point-supported glass curtain wall, and damage can easily take place to the glass curtain wall during hoisting, installation cost of the glass curtain wall is increased, the direction of the glass curtain wall cannot be controlled easily during embedding, and installation construction time is prolonged; and the existing installation construction technologies of the point-supported glass curtain wall request manual embedding of the glass curtain wall and painting construction, so manual labor strength is increased, painting smoothness is non-uniform, and safety risks of workers are increased in overhead operations.

The invention discloses a Fe-Ce composite catalyst for a hydrogen sulfide-based catalytic reduction desulfurization and denitrification process and a preparation method thereof. The composite catalyst is prepared by taking Al2O3-TiO2 as a compound carrier and loading an active component Fe2O3-CeO2. The invention also discloses the preparation method for the Fe-Ce composite catalyst for the hydrogen sulfide-based catalytic reduction desulfurization and denitrification process. The preparation method comprises the following steps: 1) firstly preparing the compound carrier Al2O3-TiO2; and 2) preparing the composite catalyst Fe2O3-CeO2 / Al2O3-TiO2. The catalyst prepared according to the method is simple in process, is convenient in large-scale industrial production and can realize synchronous removal within a common industrial catalytic temperature segment under lower temperature of 160-240 DEG C, so that the composite catalyst has higher economic value and promotional value. In later period, the higher conversion rate of nitric oxide and sulfide can be realized in the manner of further modifying the catalyst, including further increasing or reducing Ce and Fe contents, or adding other trace components and even optimizing the reaction condition.

The invention provides a connecting system for a back-bolt type stone curtain wall. According to the connecting system for the back-bolt type stone curtain wall, by arranging a locking device on a back-bolt connecting member at the upper end of a stone plate, locking and opening of the back-bolt connecting member at the upper end of the stone plate and a metal supporting piece on a curtain wall frame cross beam are realized in situ; a back-bolt connecting member at the lower end of the curtain wall stone plate and an L-shaped metal supporting piece on the curtain wall frame cross beam rotate for a certain angle so that the stone plate can be changed and mounted at will. The connecting system for the back-bolt type stone curtain wall has the advantages that the construction method is flexible; without any effect on the mounting quality, the stone curtain wall can be mounted from any position of the stone curtain wall according to the actual situation of the site; the curtain wall stoneplate can be conveniently detached and changed; by using a locking device on the connecting system on the back of the curtain wall stone, the locking and opening between the connecting member and themetal supporting piece on a curtain wall frame can be realized in situ so as to detach and change the curtain wall stone plate in situ; the maintenance is convenient; by using the connecting system, the curtain wall stone plate is changed in an original position; the stone curtain wall is very convenient to maintain; and for the originally mounted stone curtain wall, the stone plate can also be conveniently maintained and changed by using the connecting system.

The invention discloses an energy storage battery cluster with a simplified structure, which comprises a battery rack, the inner surfaces of the two sides of the battery rack are provided with battery modules and battery module occlusion grooves, a battery module layer support is arranged between the inner surfaces of the two sides of the battery rack, and the outer surface of the upper end of the battery module layer support is provided with a battery cluster body. According to the energy storage battery cluster with the simplified structure, after the lithium batteries form the module, the module is directly installed on the battery rack of the battery cluster, the weight of the module is directly borne by the reinforcing beams of the battery rack, and a bottom shell in a traditional method is omitted. Occlusion structures are arranged between the modules as well as between the modules and the battery rack, so that the structure is stable, and easy dislocation caused by shaking or external impact is avoided. Due to the fact that no closed pack shell is arranged outside the module, the heat dissipation area of the module is increased, and the heat dissipation efficiency is higher. A large module structure is adopted, the structure is simplified, meanwhile, the material cost and the manufacturing cost are reduced, and meanwhile installation and maintenance are convenient.

The invention discloses a compression-resistant PE communication pipe in the technical field of PE pipes, a sandwich layer is arranged on the outer wall of the inner tube, the sandwich layer includesa shock absorbing pad, a bubble sphere layer is arranged in the inner cavity of the shock absorbing cushion, a composite pearl cotton layer is arranged in the inner cavity of the bubble sphere layer,a foam layer is arranged in the inner cavity of the composite pearl cotton layer, a reinforcement layer is arranged in the inner cavity of the foam layer, a shock absorbing spring is arranged in the inner cavity of the protective sleeve, the gap between the reinforce layer and the inner tube body is filled with rubber balls, an outer pipe body is arranged on the outer wall of the sandwich layer, an anticorrosion wear-resistant layer is arranged on the outer wall of the outer pipe, the outer wall of the anti-corrosion and wear-resistant layer is uniformly provided with auxiliary wear-resistantconvex grains, the anti-compression performance of the pipe is greatly improved by the mutual cooperation of the shock absorbing cushion, the foam layer and the shock absorbing spring of the inner cavity of the sandwich layer, the deformation of the pipe caused by the external reasons is prevented, the use is affected, the installation cost is increased, and the installation environment can be optimized by the auxiliary wear-resistant convex grains, so as to meet the use demand.

The invention relates to a wind power generation system and a control method thereof, in particular to a variable frequency type three-phase wind power generation system and a control method thereof. The variable frequency type three-phase wind power generation system comprises a master control part, a rectification circuit, an inverter circuit, a detection circuit, a storage battery charging and discharging circuit, a storage battery interface, a wind power generator interface, a power frequency load interface, a variable frequency load interface, an electronic control switch, a warning answering device, and an optional isolation transformer. The control method comprises the following steps: before the variable frequency load is electrified, on the premise that all power frequency loads are allowed to be powered off, all power frequency loads are disconnected and forbidden to be switched on, and the variable frequency load is electrified in a variable frequency mode; when the frequency is changed into a constant power frequency, a system automatically electrifies the power frequency loads which are allowed to be electrified one by one by referring to the advanced setting of a user, wherein the power sum of the power frequency loads is not more than the residual power generation capacity of the system. For the wind power generation system containing the motor type load, the installed capacity of the wind driven generator is reduced at the beginning of the scheme design by the invention, and the cost is lowered.

Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion exchange and reverse osmosis water softeners eliminate scale buildup in pipes, but are expensive. This invention is a means of keeping the scale precipitate, created when water is heated, inside the water heater by passing the hot water through a removal medium where the scale sticks to the surface. The removal medium can be placed inside the water heater or in a separate tank connected to the water heater; both configurations remove the precipitate from hot water; both save hot water pipes from scale accumulation.

The invention relates to a signal control period division method based on trajectory data. The method comprises the following steps: S1, obtaining a relationship between the wave velocity and the flowof a concentrated wave based on a basic relationship among three parameters, namely a traffic wave theory, a Green-Hilbert linear model and a flow density velocity; S2, superposing the trajectory data of the same intersection in the same time period of multiple days to obtain input data; S3, based on the input data, a speed threshold division method and a kinetic equation, obtaining the wave velocity of the concentrated wave; and S4, clustering the wave velocity of the concentrated wave, and dividing a signal control time period based on the relationship between the wave velocity of the concentrated wave and the flow. Compared with the prior art, the operation efficiency and the safety level of the signal control intersection are improved, and the installation and maintenance cost of a fixed detector is reduced.

The invention relates to a pile stabilizing frame for pile sinking of an offshore wind power batter pile group and a pile sinking method. The pile stabilizing frame comprises a supporting frame, a first limiting frame and a second limiting frame; the first limiting frame and the second limiting frame are arranged at two opposite ends of the supporting frame correspondingly; rotatable first batter pile positioning mechanisms are arranged on the first limiting frame; a plurality of second batter pile positioning mechanisms are arranged on the second limiting frame; and on a horizontal plane, the projection area of the first limiting frame is smaller than or equal to the projection area of the second limiting frame. According to the pile stabilizing frame, fixing and inclination adjusting of a plurality of batter piles can be achieved, the batter piles do not need to be hoisted by moving ship position for multiple times, on the one hand, the safety risk is reduced, on the other hand, the working procedures can be reduced, the pile sinking efficiency is improved, and then the installation cost is saved. The rotatable second batter pile positioning mechanisms are arranged to be matched with the plurality of first batter pile positioning mechanisms, so that the overall weight of equipment can be reduced, the production and installation difficulty is reduced, and the cost is saved.

The invention discloses a redundant feathering system and method for controlling wind power variable pitch. The redundant feathering system for controlling wind power variable pitch comprises three shaft cabinets, the output ends of a main power supply and a backup power supply are connected with a driver and a motor power input ends; a backup power selector is provided with three alternative interfaces, a first interface is connected with a shaft cabinet driver, a second interface is connected with the next shaft cabinet driver, a third interface is connected with the former shaft cabinet driver; the signal input end of the backup power supply selector is connected with the output end of a controller; three alternative interfaces are arranged in a servo motor selector, the first interfaceof the servo motor selector is connected with a shaft cabinet motor, the second interface of the servo motor selector is connected with the next shaft cabinet motor, the third interface of the servomotor selector is connected with the former shaft cabinet motor; and the control signal input end of the servo motor selector is connected with the output end of the controller. On the basis of addinga small number of circuit switching equipment, the key components between the shaft cabinets can be shared through the backup power selector and the servo motor selector so that the feathering operation can be completed.

The invention provides an embedded type multistage elevator buffer and a working method thereof. The embedded type multistage elevator buffer and the working method thereof are characterized in that the embedded type multistage elevator buffer comprises a hydraulic oil cylinder bottom plate and a hydraulic oil cylinder arranged on the hydraulic oil cylinder bottom plate, and a second stage plungerwhich can slide in a rise and fall mode along the interior of a hydraulic oil cylinder body and a second stage reset spring located below the second stage plunger are arranged in the hydraulic oil cylinder body in a sealing mode; a first stage plunger which can slide in a rise and fall mode along the interior of a second stage plunger body and a first stage reset spring located below the first stage plunger are arranged in the second stage plunger body in a sealing mode; and inner cavities of the hydraulic oil cylinder, the second stage plunger and the first stage plunger communicate with oneanother, and hydraulic oil is poured into the inner cavities of the hydraulic oil cylinder, the second stage plunger and the first stage plunger. The embedded type multistage elevator buffer has a simple structure and reasonable design, and the technical bottleneck problems of increasing capacity, increasing speeds and achieving high capacity of a passenger elevator are solved without changing abuilding structure of an original shaft bottom pit.

The invention provides a device used in a photovoltaic power plant for monitoring and suppressing a potential induced degradation (PID) effect. The photovoltaic power plant comprises a photovoltaic module string and a battery module. The device comprises a charge control module, a discharge control module, a data acquisition module, a clock module and a control operation and processing module, wherein the charge control module is used for controlling the photovoltaic module string to charge the battery module; the discharge control module is used for controlling the battery module to apply an inverse voltage to the photovoltaic module string when the PID effect occurs; the data acquisition module is used for acquiring voltage data of the photovoltaic module string and electric quantity condition of the battery module; the clock module is used for acquiring current time of a system; and the control operation and processing module is used for performing analytical processing according to the data acquired by the data acquisition module and the clock module, and further controlling the start-stop operations of the charge control module and the discharge control module. The invention further provides a method used in the photovoltaic power plant for monitoring and suppressing the PID effect. The device has the advantages of being simple in structure, small in size, low in cost, and capable of performing effective monitoring and suppressing on the PID effect of the photovoltaic power plant.

A system and apparatus for enhancement of inlet air mass for processes by progressive filtration and intermediate cooling.