31results about How to "Avoid large-scale remodeling" patented technology

The invention discloses a heat recovery fresh air unit, which comprises an air intake unit; the inside of the air intake unit is orderly provided with a filter section, a heat-moisture treatment section and a fan section; the inside of the filter section is provided with a fresh air intake and an air filter; the inside of the heat-moisture treatment section is provided with a water cooling coil, a direct evaporation type coil and a reheating coil; the inside of the fan section is provided with a fan and an air supply outlet; the water cooling coil is provided with water inlet pipe and water outlet pipe connectors; and the direct evaporation type coil and the reheating coil are provided with refrigerant inlet and outlet connectors. The heat recovery fresh air unit is characterized in that: the heat recovery fresh air unit also comprises an air outlet unit; the inside of the air outlet unit is orderly provided with a filter section, a heat recovery section and an air exhaust section; the inside of the filter section is provided with a return air inlet and an air filter; the inside of the heat recovery section is provided with a compressor and a condensing coil; and the air exhaust section is provided with a fan and an exhaust outlet. The heat recovery fresh air unit is provided with the air outlet unit, solves the problem of temperature and humidity control in the indoor environment, and can recover heat to further improve energy utilization rate.

The invention discloses a video-on-demand network, which employs QAM equipment and HFC network between an IP-based backbone network and a set-top box (STB). The STB sends uplink data to the IP-based backbone network via an IP network channel, and the IP-based backbone network sends down-link data to the STB via a radio-frequency channel of the HFC network. The invention also discloses a video-on-demand method. With the inventive technical proposal, the HFC network based on radio frequency (RF) data transmission can transmit down-link data with large data volume via the radio frequency with relatively-larger bandwidth resource, to solve the congestion problem of the down-link data. Contrarily, the up-link data with smaller data volume are transmitted based on the IP protocol. The invention avoids the large-scale reconstruction of the existing network, saves the cost, and can efficiently improve the use experience of the user.

The invention discloses an automobile cooling fluid temperature detection method which comprises the following steps: judging whether an automobile engine is started according to an engine speed; if the automobile engine is not started, taking the current temperature outside an automobile as temperature of automobile cooling fluid; if the automobile engine is started, detecting a starting mode of the automobile; if the current starting mode of the automobile is cold starting, calculating the start time from ignition of the engine, calculating an average engine speed, and calculating the temperature of the automobile cooling fluid according to the average engine speed and the current temperature outside the automobile; and if the current starting mode of the automobile is hot starting, detecting flame-out time of the engine, and calculating the temperature of the automobile cooling fluid according to the flame-out time and the current temperature outside the automobile. The invention further provides an automobile cooling fluid temperature detection device. By the implementation of the technical scheme provided by the invention, the current temperature of the cooling fluid of the automobile can be calculated through intelligent simulation so as to realize functional control over other vehicle-mounted devices; and complicated automobile modification is avoided, and the cost and the development time are reduced.

The invention discloses a fresh air handling unit. The fresh air handling unit comprises a fan segment and a surface cooling, reheating and air supply segment, wherein a variable frequency motor and a centrifugal fan are arranged in the fan segment sequentially; and a water cooled coil pipe and a directly evaporative type coil pipe are arranged in the surface cooling, reheating and air supply segment. The novel fan unit is characterized in that: a filtering segment is arranged in front of the fan segment; a filter device is arranged in the filtering segment; the filter device comprises a filter cartridge which is arranged in the fan unit through a filter bracket; a pulse blowback device is arranged at an air outlet of the filter cartridge; and a dust collecting device is arranged below the filter cartridge. Through the arrangement of the filter device, the fresh air handling unit has the advantages of capability of performing self-cleaning filter, improvement on air quality and convenient maintenance.

The invention provides a blockchain network system. The blockchain network system comprises a male chain, a female chain and a parallel chain. The male chain is of a point-to-point network structure composed of a plurality of nodes and can provide a unified interface specification for the outside; the female chain is a block chain network accessed to the male chain; the parallel chain is composedof part of nodes in the male chain or the female chain. Nodes in the parallel chains are provided with access interfaces of the female chains, and butt joint of the male chain and the female chain iscompleted in a bridging mode; and the parallel chain has a complete function of the female chain and can store all information on the female chain. According to the method, part of nodes in the male chain or the female chain are transformed into the parallel chain, so that the female chain and the male chain or the two female chains can be in butt joint, and cross-chain transaction is completed. Through the parallel chain, large-scale transformation of the female chain can be avoided, and the problem that an existing block chain network cannot communicate and interact with other block chain networks is solved.

The invention relates to a protection method in a power distribution network relay protection technology, in particular to a self-adaptive power distribution network current protection method based on estimated information. The method includes the following steps that firstly, power changing curves of connection points of distributed photovoltaic power supplies of a power distribution network are determined; secondly, fault current changing curves of the distributed photovoltaic power supplies are determined; thirdly, a current protection constant value curve of the power distribution network is determined; fourthly, protection constant values of the power distribution network are transmitted to a protection device so that the protection device can act correctly when the power distribution network breaks down. The method can adapt to influence of fault current changes caused by power changes of the distributed photovoltaic power supplies on protection, so that the accuracy of current protection action of the power distribution network is improved, and accordingly the reliability of the protection action is improved.

The invention provides a rarely-used character processing method and system. The rarely-used character processing method comprises the steps that a front end receives rarely-used character features input by a user; the front end sends the rarely-used character features to a rarely-used character cloud; the rarely-used character cloud retrieves rarely-used characters from a preset rarely-used character attribute comparison library according to the rarely-used character features to obtain one or more pieces of rarely-used character information; wherein each piece of rarely-used character information comprises a rarely-used character font picture and a user-defined code corresponding to the rarely-used character font picture; the rarely-used character cloud sends one or more pieces of rarely-used character information to the front end; the front end displays one or more rarely-used font pictures to the user; the front end receives a rarely-used font picture selected by a user, and obtainsa custom code corresponding to the rarely-used font picture; and the front end sends the custom code corresponding to the uncommon character font picture to the enterprise internal system, so that the processing flow of the uncommon character can be transferred from the front end to the uncommon character cloud end, the large-scale transformation of the existing stock system by character set upgrading or adjustment is avoided, and the cost is reduced.

The invention particularly relates to an early warning and control method for a short-time heavy rainfall community source. The method comprises the steps that S1 a community weather master station monitors the rainfall intensity in real time through a tipping bucket rain gauge, the sampling time is recorded as delta T, the collected total rainfall amount is recorded as V, and the rainfall intensity is recorded as P, and then according to a source heavy rainfall recognition and early warning algorithm, P = V/delta T; S2 the community weather master station compares the rainfall intensity P with a set early warning threshold value K, if P is greater than K, it is judged that heavy rainfall occurs once in a short time, otherwise, it is judged that no heavy rainfall exists in the short time; and S3 a roof rainwater intelligent regulation and storage device regulates and controls the water storage capacity of the roof by controlling the rainwater discharge amount of a roof water outlet, and when the roof rainwater intelligent regulation and storage device receives a heavy rainfall signal, the roof water outlet is closed by the roof rainwater intelligent regulation and storage device; and when the roof rainwater intelligent regulation and storage device receives a short-time heavy rainfall-free signal, the roof rainwater intelligent regulation and storage device opens the roof water outlet.

The invention discloses an account binding method. The method comprises the following steps of: acquiring a network attached storage customer access location number parameter identifier, a service provider virtual local area network parameter identifier and a customer virtual local area network parameter identifier; selecting the network attached storage customer access location number parameter identifier to mark an optical line terminal corresponding to the account; selecting the customer virtual local area network parameter identifier to mark an Ethernet interface of an optical network unit corresponding to the account; and selecting the provider virtual local area network parameter identifier to mark a connection interface of the optical line terminal and the optical network unit corresponding to the account. The invention also discloses an account binding device.

The invention provides a network management method and a network management system based on a mobile terminal, and aims to solve the problems that data transmission between the network management server and the mobile terminal is not realized until the conventional network is changed, and a function of a network management server for pushing notification to the mobile terminal cannot be realized because of a browser/server (B/S) architecture mode. The method comprises the following steps that: a network management client arranged on the mobile terminal sends a customization launching message to a mail server; the mail server sends the customization launching message to the network management server; the network management server resolves the customization launching message, generates a customization response message and sends the customization response message to the mail server; the mail server sends the customization response message to the network management client; the network management server pushes customized contents to the mail server; and the mail server pushes the customized contents to the network management client. By the method and the system, a function of the network management server for pushing the notification to the mobile terminal is realized, and a phenomenon of large-scale transformation of the conventional network can be avoided.

The invention discloses a scanning type air leakage monitoring device and a mounting method thereof, and belongs to the field of ferrous metallurgy. The device comprises a monitor, a cooler and a datatransmitter; and the scanning type air leakage monitoring device is installed at the bottom of a sintering pallet. The scanning type air leakage monitoring device is installed at the lower part of apallet grate bar, a detection device operates along with the pallet, smoke parameter detection of all sintering air bellows is achieved in a scanning manner, the device is directly installed at the bottom of the pallet, and work required to be completed by a complex test system is solved. The device monitors the waste gas temperature, the pressure, the flow and the oxygen content in the position where the device passes, one-time air leakage monitoring and scanning are achieved, online air leakage monitoring is achieved through wireless data transmission by the aid of an analysis software system, and the accuracy of monitored data can be improved by 20%.

The invention provides a network topology structure and networking method for an intelligent mine, and the network topology structure comprises a main core switch which is disposed at a ground data center; a main optical cable which comprises a plurality of optical fibers, and the first end of each of the plurality of optical fibers are connected with the main core switch; a plurality of downhole information node groups, each of which corresponds to a middle section plane and comprises a plurality of information nodes, each information node comprising a plurality of switches, the plurality of information nodes forming a plurality of looped networks, and each looped network is connected with the second ends of the two optical fibers through two switches. According to the embodiment of the invention, an economical, practical and easy-to-maintain network topology structure suitable for the continuous mining process of an intelligent mine can be provided according to different mine development systems, and the network reconstruction cost brought by newly added networking requirements in the mine development process is reduced.

The invention provides a dual-mode plasma arc device for rotating electrode atomization. The dual-mode plasma arc device comprises a high-frequency oscillator connected with a power supply, and the high-frequency oscillator is further connected with a truncated-cone-shaped cathode; a Laval type plasma gun nozzle is arranged outside the truncated-cone-shaped cathode, and the Laval type plasma gun nozzle is connected with a gas compressor and the power supply separately; and the power supply is further connected with a second electric brush and a first electric brush, the second electric brush and the first electric brush are located on the upper side and the lower side of the left end of an electrode bar, and the electrode bar is opposite to the left end of the truncated-cone-shaped cathode. A method for centrifugal atomization comprises the steps that (1), the electrode bar is installed, the power supply is switched off, and gas in an atomizing chamber is replaced with Ar gas; (2), the gas compressor is started, a variable resistor connected with the nozzle is set to be small, the high-frequency oscillator and the power supply are started, arcing is conducted between the nozzle and the cathode, and plasma flame gas is blown out after being compressed through the plasma gun nozzle; and (3), a plasma gun is integrally moved, and the end face of a bar materials starts to be melted under the thermal energy impact of a plasma flame. The dual-mode plasma arc device and method for rotating electrode atomization have the advantages that the structure is simple, the production efficiency is high, and the method is easy to operate.