80results about How to "Many models" patented technology

The invention relates to a method for producing n-alkane solvent oil from Fischer-Tropsch synthetic oil. According to the method, low-temperature Fischer-Tropsch synthetic light oil is adopted as a raw material, and is processed through upgrading and distillation separation processes with a fractionation tower, hydro-finishing, a degassing tower, a C6/C7 cutting tower, a C5/C6 cut tower, a C10/C11 cutting tower, a C8/C9 cutting tower, a C7/C8 cutting tower, a C9/C10 cutting tower, a C13/C14 cutting tower, and a C17/C18 cutting tower; such that various types of solvent oils such as n-pentane-rich, #6, #120, #140, #200, #D30, #D40, #D65, #D100 and #D120 solvent oils can be obtained. Compared to prior arts, all products produced with the method are n-alkane solvent oils. The method has the advantages of simple process flow, more produced solvent oil types, high solvent oil quality, and the like.

The invention relates to an unmanned aerial vehicle monitoring system and a monitoring method thereof. The unmanned aerial vehicle monitoring method comprises the following steps: step 1, acquiring animage in a scanning area; step 2, forming a three-dimensional vision to determine whether a suspicious object exists in the image or not through a first camera and a second camera; step 3, if yes, calculating the standard position of the suspicious target, and tracking and shooting the suspicious target. A plurality of servo holders are arranged in the area to be detected, the first camera and the second camera are arranged on the two side end faces of each servo holder, after the unmanned aerial vehicle is found, the unmanned aerial vehicle is tracked and monitored through binocular vision according to the position information, the finding, identifying and disposing of the low-altitude low-speed small targets can be realized, the unmanned aerial vehicle is detected through the two cameras, the concept that the unmanned aerial vehicle is detected by radar is changed, and the detection cost of the unmanned aerial vehicle is reduced.

The invention relates to the technical field of piezoelectric ceramic power generation, and provides a piezoelectric ceramic power generation method and device. The device comprises an elastic piezoelectric ceramic piece, a driving mechanism and a switching device, wherein when an external acting force is applied to the driving mechanism, the driving mechanism transfers the external acting force to the switching device; when the force applied to the switching device is less than a first preset force, the switching device does not act or is deformed within a preset range; when the force appliedto the switching device is more than the first preset force, the switching device acts quickly to impact the elastic piezoelectric ceramic piece, and thus the elastic piezoelectric ceramic piece generates electric energy. According to the device and method provided by the invention, the switching device with a first state and a second state is used, the effect of setting the driving threshold forthe external acting force is achieved, the corresponding quick deformation speed is also transferred to the elastic piezoelectric ceramic piece, and thus the more power is generated.

The invention relates to a fire-fighting early-warning monitoring and intelligent management system based on an internet. The system integrates functions of eight kinds of software, comprising telephone networking early-warning software, wire video monitoring early-warning software, wireless video monitoring early-warning software, mobile video monitoring early-warning software, satellite video monitoring early-warning software, video on demand software, video session software, live video software, and the like, and the functions can be used independently or integratedly by users. The system can perform large-area networking management on fire alarm systems in buildings, and can realize effective monitoring and quick alarm. The system guarantees the normal operation of the fire alarm systems and fire safety facilities, improves the reliability of the fire alarm systems, and reduces the rate of false alarm. Moreover, through the equipment operating data and alarm information of the fire early-warning monitoring intelligent alarm system based on the internet, the developing process of intelligence and networking of city fire management is accelerated, and thus, the integral technology level and the comprehensive capability of fire prevention and reduction are enhanced.

The invention belongs to the technical field of turbine vibration fault diagnosis, and relates to turbine vibration fault diagnosis adopting deep learning, namely a turbine vibration fault diagnosis method based on a deep learning artificial neural network. The invention discloses a turbine vibration fault diagnosis method based on a deep learning artificial neural network. Parameter characteristics and connection among parameters when the turboset system vibrates are comprehensively considered. Data are preprocessed through multivariate analysis, so that an independence relation among variousdata is established, redundant data are reduced, a basic feature table is constructed, then deep learning artificial neural network training is carried out, and the trained deep learning artificial neural network is obtained to diagnose the vibration fault of the steam turbine. The method is based on the deep learning artificial neural network, and is characterized in that the deep learning artificial neural network is used, so that the construction of a calculation model is avoided, and meanwhile, the dimension reduction is carried out by using multivariate analysis during data preprocessing.

The invention relates to a manufacturing method for an elevator sill. The manufacturing method comprises the following steps of: (1) forming an elevator door chute via rolling in the middle of a stainless steel strap material to serve as a sill body; and (2) longitudinally bending two sides of the sill body downwards to form a first side arm and a second side arm via cold bending rolling, and respectively bending the lower ends of the first side arm and the second side arm inwards and extending the lower ends to form a first bottom bracket and a second bottom bracket, wherein the lower end faces of the first bottom bracket and the second bottom bracket are in the same surface, and the top surface of at least one of the bottom brackets is pushed against the bottom surface of the door chute. According to the method, the sill body and the part served as a bracket are arranged integrally, thus the obtained sill not only has high intensity, but also has attractive, simple and generous appearance and practicability. Additionally, by using the method provided by the invention, the shape of the second side arm can be designed conveniently to meet the requirements of different occasions inpractical application, and the types of the elevator sills are enriched.

The invention provides a screw of a screw vacuum pump, and belongs to the technical field of vacuum pumps. The problem that the screw of the existing screw vacuum pump cannot meet the specific process conditions at present is solved. The number of turns of the upper spiral groove of a suction part, in the screw of the screw vacuum pump, is 0.75-1.25; when the number of turns of the upper spiral groove of a compression transition part is 1, the number of turns of the upper spiral groove of an exhaust part is more than 3; when the number of turns of the upper spiral groove of the compression transition part is more than 1, the number of turns of the upper spiral groove of the exhaust part is 1.75-4. The screw of the screw vacuum pump has the advantages that the vacuum pump is high in ultimate vacuum, is stable in performance while the manufacturing cost is almost not increased, and then more types of screw vacuum pumps are available with a more widespread application domain. In the screw vacuum pump adopting the pitch variable screw provided by the invention, the compression ability is optimized by appropriately increasing the number of turns of the spiral groove as wound, the exhaust efficiency of the exhaust part is improved, the excessive compression phenomenon because the air in the exhaust part cannot be exhausted is alleviated, and then the unit energy consumption is reduced effectively.

The invention provides a hand-held spray head and belongs to the field of health spray equipment. The hand-held spray head comprises a spray head body. The spray head body is of a hollow structure and internally provided with a pipe which penetrates through the two ends of the spray head body, and the two ends of the pipe are provided with a water inlet and a water outlet respectively; the spray head body is internally provided with a heating device, the heating device comprises a power supply mechanism and an electric heating wire, the electric heating wire is sleeved with an electric heating tube, and the electric heating tube is located in the pipe; the outer side of the spray head body is provided with a pressing switch, the pipe is internally provided with a blocking piece which blocks the water inlet and the water outlet, and the blocking piece is connected with the pressing switch; the pressing switch is further connected with a first contact point electrically connected with the power supply mechanism, the electric heating wire is electrically connected with the power supply mechanism as well, and a second contact point is arranged on the electric heating wire. Compared with a mode of cleaning only through paper towel, the handheld spray head has a better cleaning effect, invisible germs can be cleaned up, and guarantee is brought to the health of a user.

The invention provides an output voltage feedback circuit of a switching converter. The output voltage feedback circuit comprises a diode D5 and a Zener diode ZD1;an anode of the diode D5 is connectedwith a positive terminal of the output voltage, and an anode of the Zener diode ZD1 is used as an output end of the output voltage feedback circuit and is used to be connected with an FB pin of a control chip; a temperature compensation circuit is included; the temperature compensation circuit includes a compensation device complementary to the temperature variation characteristic of the Zener diode ZD1; and the temperature compensation circuit is serially connected between the diode D5 and the Zener diode ZD1, i.e., one end of the temperature compensation circuit is connected to a cathode ofthe diode D5, and the other end of the temperature compensation circuit is connected to a cathode of the Zener diode ZD1. Compared with the conventional voltage stabilization feedback circuits, the solution of the invention has more stable voltage precision in a high temperature environment.

The invention discloses an ultralow-loss low-end ideal diode. The ultralow-loss low-end ideal diode comprises a combinational logic control circuit and a first NMOS transistor. The combinational logiccontrol circuit comprises a second NMOS transistor, a third NMOS transistor, a first resistor and a second resistor. The drain electrode of the first NMOS tube is connected with the source electrodeof the second NMOS tube and the negative electrode of the power supply, the source electrode of the first NMOS tube is electrically connected with the source electrode of the third NMOS tube, the gridelectrode of the first NMOS tube is electrically connected with the drain electrode of the third NMOS tube, the grid electrode of the second NMOS tube is connected with the drain electrode of the second NMOS tube and the grid electrode of the third NMOS tube, the drain electrode of the second NMOS tube is connected with the positive electrode of the power supply through the first resistor, the drain electrode of the third NMOS tube is connected with the positive electrode of the power supply through the second resistor, and the load is connected between the positive electrode of the power supply and the source electrode of the first NMOS tube. The anti-backflow circuit has an anti-backflow function, can protect a preceding-stage circuit, and is very low in loss, simple in circuit and highin practicability.

A technology for preparing the cross-linked foam tube (or rod) includes such steps as pugging the foam plastics in roller mill or Banbury mixer, cooling, pulverizing, extruding out while granulating, injecting the particles into a mould set, and cross-linking while foaming. Said mould set is composed of a mould shell with moulding cavity, and a mould core.

The invention provides a screw of a screw vacuum pump, and belongs to the technical field of vacuum pumps. The problem that an existing screw of the screw vacuum pump can not meet specific technological conditions is solved. The number of circles of a spiral groove in an air intake part in the screw of the screw vacuum pump is 0.75-1.25. When the number of circles of a spiral groove in a compression transition part is 1, the number of circles of a spiral groove in an exhausting part is larger than 3. When the number of circles of the spiral groove in the compression transition part is larger than 1, the number of circles of the spiral groove in the exhausting part is 1.75-4. By means of the screw of the screw vacuum pump, the final vacuum degree of the vacuum pump is higher, the performance is more stable, the manufacturing cost is hardly increased, the screw vacuum pumps have more models, and the application range is wider. According to the screw vacuum pump adopting the variable-pitch screw, by properly increasing the number of winding circles of the spiral grooves, the compression capacity is optimized, the exhausting efficiency of the exhausting part is improved, the phenomenon that air of the exhausting part can not be exhausted and compression is excessive is relieved, and the unit energy consumption is further effectively lowered.