74results about How to "For precise control" patented technology

The invention provides a switching controlling method in a mobile communication system and a wireless network controller. The method comprises the following steps of: (A) determining a measurement quantity needed to be measured and a switching measurement control parameter under the current terminal measurement managing state by the wireless network controller according to the corresponding relation of a preset terminal measurement management status, the measurement quantity needed to be measured and the switching measurement control parameter; (B) issuing a measurement control message to a mobile terminal and/or a base station by the wireless network controller, wherein the measurement control message includes the determined measurement quantity needed to be measured; (C) receiving measurement data which are measured and reported by the mobile terminal and/or the base station according to the measurement quantity needed to be measured, included in the measurement control messageby the wireless network controller; and (D) triggering cell switching by the wireless network controller when the measurement data meet a switching judgment condition confirmed by the switching measurement control parameter. By adopting the technical scheme, more accurate switching control can be realized, and thus the network quality is improved.

The invention discloses an air conditioner indoor environment temperature and humidity compensation method. The method comprises the steps that an air conditioner controller is powered on to run, and the controller temperature and the indoor unit temperature are obtained; whether the difference value of the controller temperature and the indoor unit temperature is smaller than a set difference value or not is judged; if yes, the first compensation temperature is determined according to the controller powered-on running time, and the difference of the current controller temperature and the first compensation temperature is calculated as the indoor environment temperature; if not, whether the controller powered-on running time is smaller than a set time threshold value or not is judged; if yes, the current indoor unit temperature is obtained as the indoor environment temperature; and if not, the difference of the current controller temperature and the second compensation temperature is calculated as the indoor environment temperature. According to the air conditioner indoor environment temperature and humidity compensation method, by means of compensation for the temperature and the humidity, the accuracy of the obtained indoor environment temperature and indoor environment humidity is improved, so that an air conditioner is accurately controlled, user experience is improved, and the market competitiveness of the air conditioner is improved.

The invention discloses a preparation method of a hollow micro-channel structure, and specifically relates to the field of micro machining. The method comprises the following steps: making a micron-sized micro-channel master mask by a photoetching technology and a hot reflux technology; making a PDMS (Polydimethylsiloxane) flexible template by using the master mask, wherein the obtained flexible substrate has a pattern structure complementary to the micro-channel master mask; tightly attaching the PDMS flexible template to the surface of a chip to form a micro-channel cavity; dripping S1813 photoresist on one side; filling the micro-channel cavity with the photoresist under the action of capillary force; heating after filling for a long time, wherein the photoresist in the micro-channel cavity reflows, so that the photoresist in contact with an inner wall of the micro-channel cavity is attached to the inner wall; cooling, curing and removing the PDMS flexible template to obtain the hollow micro-channel structure on the surface of the chip. Compared with other methods for preparing a hollow micro-channel, the preparation method disclosed by the invention has the advantages of low cost, simple process and the like. The preparation method is suitable for the application fields of micro machining, micro-fluidic chips, biomedicine and the like.

The invention discloses a fuel gas concentration self-adaptive control method for a fuel gas generating set. The fuel gas concentration is the concentration of methane in fuel gas. The method comprises an open-loop fuel gas concentration self-learning starting control step carried out when the fuel gas generating set is not successfully started, wherein an engine ECU performs internal logic fuel gas concentration self-learning to reach the changed fuel gas concentration value, so that the set can be started smoothly; and the method further comprises a closed-loop fuel gas concentration self-learning control step, wherein the engine ECU continuously and finely adjusts the fuel gas methane concentration value repeatedly according to closed-loop data of an oxygen sensor, and finally performsaccurate self-learning to reach the changed fuel gas methane concentration value so that the fuel gas generating set can easily respond to the change of the concentration of the methane in the fuel gas. According to the method, the fuel gas generator set can accurately control the injection amount of a fuel gas valve and the air-fuel ratio better under the condition of fuel gas such as biogas, gasand biomass gas with the methane concentration variable, so that safe and stable operation is realized.

The invention provides a smart home interactive method, and the method comprises the steps: when a first voice command inputted by a user is received, key words in the first voice command are acquired and matched with data information of all smart home equipment in a smart home system, if the number of matched smart home equipment is greater than 1, a prompt message is generated to the user according to the personalized information in the data information of each matched smart home equipment; when a second voice command inputted by the user according to the prompt message is received, the corresponding smart home equipment is determined according to the second voice command, and the first voice command is transmitted to the smart home equipment to enable the smart home equipment to execute. Based on the same inventive concept, the invention also provides a smart home interactive device, the difficulty for voice controlling the smart home can be reduced, and the operation and user experience are improved.

The invention discloses a robot-assisted puncture operation end tool center calibration method based on stereoscopic vision, which belongs to the field of robot control, and aims to realize accurate control of a robot on a needle tip. The method comprises the following steps: performing monocular vision calibration on two cameras, performing binocular system vision calibration, and establishing avision measurement space coordinate system; wherein a puncture needle performs single translational motion and rotary translational motion respectively in a visual measurement space range; processingan image acquired in the moving operation to generate a closed area and a minimum enclosing rectangle of the closed area; circularly detecting an intersection point of the short edge of the minimum enclosing rectangle and the closed area, and obtaining the position change description of a needle tip in the visual measurement space coordinate system in the single translational motion process and the position change description of the needle tip in the visual measurement space coordinate system in the rotary translational motion process; obtaining an attitude rotation relationship between the visual measurement space coordinate system and a robot base coordinate system; obtaining position description of the needle tip relative to the tail end of the mechanical arm, and completing position calibration of the needle tip.

The invention relates to a capacitance buck type light emitting diode (LED) driver and a capacitance buck type LED driving method. The capacitance buck type LED driver comprises a control circuit and a switching circuit, wherein the control circuit controls a switching state of the switching circuit according to output current and the output voltage of the capacitance buck type LED driver so as to control energy transferred from an input side to an output side; in a first working state, the switching circuit controls the input side not to transfer the energy to the output side; and in a second working state, the switching circuit controls the input side to transfer the energy to the output side so as to keep the output current and expected driving circuit consistent.

The invention discloses a drum type feeding device. The drum type feeding device comprises a base. The feeding device further comprises a storage container and a feeding control assembly. The storage container and the feeding control assembly are arranged on the base. The storage container comprises a first discharge port. The feeding control assembly comprises a second discharge port, and the first discharge port and the second discharge port have the relative sliding freedom degrees. The first discharge port and the second discharge port can be driven by a driving device to be periodically shielded or aligned. Compared with the prior art, the drum type feeding device has the advantage of aiming at the problems that in the background technology, the control difficulty of the solid particulate matter foodstuff feeding amount is high, and blocking is likely to happen. By means of the drum type feeding device, on the one hand, rolling vibration of solid particular matter is achieved through motion of the storage container, and the problem of blocking is solved. In the preferred scheme, the practicality of the device is improved through an additionally arranged discharged material metering and conveying device, meanwhile, the discharge amount is further calibrated, and the device can be applied to judgment of equipment faults.

The invention discloses a hot continuous rolling mill steel strip threading deviation tension control method and a control system thereof, relates to control equipment or methods special for metal rolling mills or products thereof, and particularly relates to the technology of utilizing loops to realize hot rolled steel strip tension control. A steel strip tension control system comprises a frame deviation tension setting unit, a frame deviation tension control unit and a servo valve deviation compensating unit. The hot continuous rolling mill steel strip threading deviation tension control method includes the steps of receiving steel strip parameters and set tension values; determining a deviation tension target of the frame and converting the same into set torque and carrying out proportional output control on a electro-hydraulic servo valve; measuring current actual tension of the loops; judging whether the loops are in contact with a steel strip or not; and carrying out secondary tension determination and multi-stage tension control. As action deviation of servo valves is compensated, precise control of openings of the servo valves and steel strip deviation tension is realized. Therefore, the technical problem about deviation tension control of the steel strip when the head of the steel strip is fed to the frame is solved, and tension control stability of the hot continuous rolling mill steel strip threading loops is improved greatly.

The invention provides a welding molten drop transition control device based on ultrasonic frequency pulse double-tungsten-electrode coordination and a control method. A welding wire is arranged on the center of a conductive nozzle of a welding gun, the upper end of the conducive nozzle is connected with a wire feeder, tungsten electrodes are arranged on the two sides of the conductive nozzle, a protection air cover is arranged on the outer sides of the tungsten electrodes, a positive electrode of a first ultrasonic frequency bypass heating wire power source and a positive electrode of a second ultrasonic frequency bypass heating wire power source are connected to a welding wire, negative electrodes of the ultrasonic frequency bypass heating wire power sources are connected with negative electrodes of main welding power sources and the tungsten electrodes, and the positive electrode of the first main welding power source and the positive electrode of the second main welding power source are connected to parent metal. The ultrasonic frequency pulse coordination control manner is used, the molten drop transition passive control manner is changed into an active control manner, the molten drops are forced to generate ultrasonic frequency vibration, the molten drops are promoted to be dropped, the molten drop transition frequency and the molten drop size can be precisely controlled,space of a welding gun is saved, the welding directivity is eliminated, the whole size of the welding gun is reduced, and the flexibility and the accessibility of the welding gun can be improved.

The invention provides an AOP-based row-level permission control method and device, and a client, and relates to the technical field of computers. The method comprises: when a data operation request of a user is received, sending a permission query request to a permission server according to a target query identifier corresponding to the user, so that a target permission table and a target servicetable identifier corresponding to the target query identifier are obtained from a permission information table stored in the permission server; and then, according to a matching result of the permission control rule in the target permission table and the data information in the target service table corresponding to the target service table identifier, determining permission information of the user, and when the data operation request is matched with the permission information of the user, performing corresponding operation on the corresponding service data according to the data operation request. Therefore, accurate control of the line-level permission of the database can be realized by utilizing an AOP mode on the premise of not invading service codes, and meanwhile, the working efficiency of developers can be improved.

The invented method includes following steps. (1) Manual peeling, (2) metal layer protection, (3) fixation, (4) photo etching graphics, (5) ion etching, (6) insulation protection, (7) ultrasound cleaning, (8) structuring and connecting electrode. In step (5), ion etching with low energy is adopted. In step (8), two top electrodes are structured on mesa structure. The advantages of the invention are as follows. Through fine controlling parameters such as thickness of metal level and etching time etc. the invention realizes primary controlling number of intrinsic junction. The fine controlling number of junction is realized by second time of ion etching and added etching. The invention is suitable to control of number of intrinsic junction for a variety of high temperature super conducting material.

The invention discloses a refrigeration system, and provides the refrigeration system using a valve to adjust a refrigeration amount. An exhaust opening of a compressor is respectively connected with a first valve and a second valve; the first valve is connected with a condenser for heat exchange; the second valve is connected with a condenser for balancing; an outlet of the condenser for heat exchange is connected with a throttling device after being connected in parallel to an outlet of the condenser for balancing; the throttling device is connected with an evaporator; the evaporator is connected with an air suction opening of the compressor; the condenser for balancing and the evaporator are mounted in parallel to form a group of heat exchange devices; in a refrigeration circulating process, the second valve is closed and the first valve is opened; if the refrigeration amount needs to be adjusted, the first valve and the second valve are opened; the opening degrees of the first valve and the second valve can be adjusted, or the opening time period of the first valve and the second valve can be adjusted; the amounts of refrigerating fluid entering the condenser for the heat exchange and the condenser for balancing can be adjusted; and the condensed refrigerating fluid vapor in the condenser for balancing is subjected to heat radiation to the evaporator, so that the amount of the refrigerating fluid can be adjusted.

The present invention discloses a chassis temperature control system. The chassis temperature control system is characterized in that a mainboard installation plate is installed on the inner side wall of a chassis body via a spring installing member, a cooling coil layer is installed between the mainboard installation plate and the inner side wall and is installed on the inner side wall via an installing member; an installing rod is arranged inside the classis body, the front, back, left and right sides of the installing rod are all equipped with the chutes, and each chute is connected with a motor via a sliding block with a servo device; the rotating shaft end of the motor is connected with an air cooler, and the air-out end of the air cooler is in threaded connection with a spiral coil; a movable plate is equipped with an air outlet and an air inlet, and the air outlet and the air inlet are in the diagonal arrangement; a first dust filtering fan is arranged in the air outlet, and a second dust filtering fan is arranged in the air inlet. According to the present invention, the temperature sensors are in the stagger installation, the concrete positions of the temperature sensors on the chassis are obtained while the temperature is detected, and then a refrigerating plant operates via a single-chip microcomputer, thereby realizing the accurate control of the chassis internal temperature.

The invention discloses a control method of an electronic device. The electronic device comprises a display unit, the display unit can displays a progress bar, the electronic device further comprises an image acquisition unit or is provided with an external image acquisition unit. The method comprises acquiring images acquired by the image acquisition unit, parsing images, determining user's operation gestures, adjusting the position of a slide block in the process bar according to a first step length if the operation gesture is a first type gesture, and adjusting the position of the slide block in the process bar according to a second step length if the operation gesture is a second type gesture, wherein the first step length is different from the second step length. According to the control method of the electronic device, the position of a slide block can be more accurately adjusted, so an electronic device can be accurately controlled. The invention further discloses an electronic device and a control device.

The invention provides a large flow mechanical self-controlling valve for irrigating paddy fields, belonging to the field of a water level control valve and aiming to solve the technical problems that the valve can be automatically opened and closed by using the water level difference in front and back of a dam under a large flow state. In order to solve the technical problems, the large flow mechanical self-controlling valve for irrigating paddy fields comprises a valve body, a butterfly valve plate, a floater and impellers; the valve is characterized in that the butterfly valve plate, a steering device, the directed floater and a diversion pipe are arranged in the valve body; an interception plate is arranged in the diversion pipe; and the impellers are arranged at the outlet of the diversion pipe. As the butterfly valve plate is adopted in the invention, the pressure difference in front and back of the valve plate is not required to be overcome during opening and closing; and moreover, the impellers with strong output power are used as a power output device of the valve plate, thus, the valve plate can be opened and closed fast under the large flow state.

The invention discloses a reconfigurable mechanical arm control method and system oriented to unknown environmental constraints. The method comprises the following steps of constructing a dynamic model of a multi-degree-of-freedom reconfigurable mechanical arm in a constraint space; establishing a state space equation of the reconfigurable mechanical arm by adopting a self-adaptive estimation parameter method based on the dynamic model; constructing a performance index function and a Hamilton-Jacobi-Bellman function by adopting a multi-information fusion function based on the state space equation; and estimating the performance index function through a neural network evaluation model by adopting an adaptive dynamic programming algorithm, and solving the Hamilton-Jacobi-Bellman function by adopting a strategy iterative algorithm based on the performance index estimation function to obtain an approximate optimal force and position tracking control strategy. According to the reconfigurable mechanical arm control method and the system oriented to the unknown environmental constraints, accurate control over the reconfigurable mechanical arm under the unknown environmental constraints can be achieved.

This invention discloses a kind of method and circuit of precisely controlling to switch power supply to output current. This method uses switching power supply to detect and get the average current flowing from voltage transformer primary coil or inductance element during switching on the switch element. It also uses switching power supply to detect and get the time, which is either from switching off the switch element to the current of voltage transformer secondary coil or inductance attenuates to zero, or from switching off the switch element to the current of voltage transformer secondary coil or inductance does not attenuate to zero but the period of switch element switching off has finished; then, based on the detected times and average current, as well as their equivalent transformed signals, the said output current is controlled by switching power supply; in addition, it also provides a kind of circuit. It concludes: a current detector used for detecting the said average current; a demagnetizing time detector used for detecting the said time; a multiplier which gets average current, times or their equivalent transformed signals. The output of multiplier controls and outputs current.

The invention discloses a furnace roasting system and furnace roasting method for a water cooling wall gasification furnace. The furnace roasting system comprises a fuel heater, a flue gas generator,a fan, an air preheater, a gasification furnace and a temperature monitoring device. A fuel enters a flue gas generator through the fuel heater, and the fuel heater improves the adaptability of the fuel of the furnace roasting system, so that a gas fuel can be used and a liquid fuel can be used, too. Meanwhile, a fuel flow control system is used for measuring and controlling the flow of a fuel. Air pressurized by the fan and heated by the air preheater enters the flue gas generator, the air flow is measured and controlled through an air flow control system, the fuel and air flow distribution is adjusted according to flue gas components measured by a flue gas analyzer, the furnace roasting temperature is measured to adjust the fuel and air flows according to the temperature monitoring device, so that the proportion of the fuel and air flows is controlled accurately, the incomplete combustion heat loss and exhaust gas heat loss of the fuel can be reduced, and heat of high-temperature flue gas is recycled by means of the air preheater, so that energy is utilized.

The invention relates to an improved demountable tanker carrier. The improved demountable tanker carrier comprises a chassis, a lifting mechanism, a main oil cylinder and a lifting oil cylinder; the chassis is provided with an oil cylinder seat; the lifting oil cylinder is hinged with the oil cylinder seat; the oil cylinder seat comprises a positioning part; and the positioning part is matched with the lifting oil cylinder to position the lifting oil cylinder. On the oil cylinder seat, a rubber gasket is arranged between the outer wall of the lifting oil cylinder and each installation plate; the rubber gasket is contacted with the outer wall of the lifting oil cylinder in an interference fit way; and the lifting oil cylinder props a lifting arm by using friction force generated by extrusion between the elastic rubber gaskets and the outer wall of the lifting oil cylinder, and then the lifting arm is automatically fixed under the action of the friction force between the rubber gasket and the outer wall, and when the lifting mechanism falls back, the lifting oil cylinder keeps at the original position, and independent operation of an operator is not needed. Moreover, a backing monitoring device is arranged on the chassis, and a driver judges the carries parks at an appropriate position by viewing the scale position of a mark point at a display position. The improved demountable tanker carrier can be positioned accurately and a command person is not needed to command the demountable tanker carrier.

The invention relates to a refractory brick raw material weighing and transporting system which comprises a feeding bin, a first feeding guide pipe, a first spiral rod, a weighing bin, a conveying bin, multiple fixed gates, a movable gate and a sliding rail. The feeding bin is arranged below an outlet of a raw material bin. The first feeding guide pipe penetrates the feeding bin, a first feeding port is formed in the middle of the first feeding guide pipe, a first discharging port is formed in one end of the first feeding guide pipe, and a second discharging port is formed in the other end of the first feeding guide pipe. The first spiral rod penetrates the first feeding guide pipe. The weighing bin comprises a first containing cavity, a second containing cavity, a first weighing component and a second weighing component. The conveying bin is arranged below the weighing bin. The fixed gates are arranged at the bottom of the conveying bin in parallel at intervals. The movable gate is tightly attached to the bottom of the fixed gates and the movable gate and the fixed gates form a sliding pair. The sliding rail is arranged above a press machine mold. By the adoption of the system, the weight of materials is accurately controlled, the refractory brick raw materials are weighed and transported electrically and automatically, and it is guaranteed that the materials evenly and smoothly fall into the press machine mold.

The present disclosure describes a capped syringe-like device for storing and dispensing liquid, with a movable plunger actuated by a rod inside a fluid dispensing container. The face sharing contact between the fluid dispensing container and the actuated plunger results in leak-proof dispensing of a controlled amount of liquid through a dispensing tip. The device may be used for refilling liquid containing vessels, for example.

The invention relates to a preparation method and preparation equipment of optical fiber preform. The preparation method comprises the following steps: after precisely heating an optical fiber preform material ingot, setting the upper alarm limit and the lower alarm limit of extrusion force, acquiring and controlling the extrusion force applied to the optical fiber preform material ingot in real time, when formed optical fiber preform is discharged from the outlet of an optical fiber preform mold, annealing, clamping and dragging the formed optical fiber perform until the formed optical fiber preform is dragged downwards and meets an expected target length, thereby obtaining an expected optical fiber preform product. By adopting the preparation method, the optical fiber preform is prevented from being bent, precise control on the preparation process of the optical fiber preform is achieved, and the preparation efficiency of the optical fiber perform is improved.

The invention discloses a discharging small tail length cutting control method for printing equipment. The method specifically comprises the following steps that before the printing equipment runs, parameters are set on a human-computer interface; the printing equipment is started and accelerated, the linear velocity V of a host is calculated, and an old material collecting roll runs according to the velocity V; discharging cutting preparation is made; the cutting press roller discharging time T<press> and the cutter discharging time T<cutter> in the discharging cutting process are calculated, and the average unit of T<press> and T<cutter> is s; and discharging small tail length cutting is achieved according to obtained T<press> and T<cutter>. When a discharging part of the printing equipment is used for roll replacement material collecting, the pressing distance of a material collecting press roll on a new roll and the cutting tail length are small, and therefore the aims of improving the overprinting precision and lowering printing waste losses in the discharging cutting process are achieved.

The invention discloses a door closing mechanism for a hydrocarbon cleaning machine. The door closing mechanism comprises a machine body, a furnace door, a moving mechanism and pressing mechanisms. The machine body comprises a door frame and a sealing structure arranged on the door frame, the door frame is of a plate-shaped structure with an opening, and the furnace door is located on the door frame. The moving mechanism comprises guide rails fixed on the door frame, a frame sliding along the guide rails and a first linear driving mechanism which drives the frame to move, the frame is located on the furnace door, and the frame is connected with the furnace door through a pin hole structure. Each pressing mechanism comprises a second linear driving mechanism, a connecting plate, a sliding rod and a cam, wherein sliding rails are arranged on the frame, the two ends of the sliding rod slide along the sliding rails, the second linear driving mechanism is fixed on the frame and drives the connecting plate to move, the sliding rod is fixed on the connecting plate, the cam is arranged on the connecting plate in a rotating mode, and the cam butts against the furnace door. By reasonably arranging the frame, the moving mechanism and the pressing mechanisms, the furnace door of the hydrocarbon cleaning machine can keep airtight under the positive pressure, ordinary pressure and negative pressure, and solvent leakage is avoided.

The invention discloses an electromagnetic heating type wall breaker comprising a mainframe and a cup body located on the mainframe, wherein a cutter assembly and a non-contact IH heating assembly arearranged under the cup body, a coil panel support and a non-contact temperature measuring assembly as well as a compressed temperature control assembly are arranged at the upper end of the mainframe,one or multiple magnetic stripes are arranged under the coil panel support, and a fan is arranged below the coil panel support. According to the invention, a motor drives the cutter assembly to rotate to achieve an efficient smashing and wall breaking effect, and the IH heating assembly is used for generating a magnetic line of force to heat a magnetic conductive member, so as to realize heatingfor food in the cup. The non-contact temperature measuring assembly and the compressed temperature control assembly are used for performing real-time monitoring on temperature of the magnetic conductive member, so as to realize accurate temperature control. The scheme of the invention solves the problems that conventional heating discs cannot be washed with water due to distribution of electric devices, and potential safety hazard exists in washing; heating efficiency is low; the heating discs are easily burnt in bottom due to non-uniform heating; the heating discs are great in thermal storageand great in thermal buffer; a temperature control manner is low in respond speed, the bottom is easily burnt, and overflow easily happens.

The invention provides a small boat control system and method based on a mobile terminal, and aims at solving the technical problems that the existing small boat control process can only be operated in a cockpit, and the control continuity cannot be maintained while comprehensive affairs are processed at other positions. The system comprises a navigation controller, an industrial control bus, a digital input and output module, a local area network, a wireless access point and a mobile terminal. The method comprises the steps that the mobile terminal sends a corresponding control instruction tothe navigation controller through a wireless communication network; the navigation controller analyzes the execution mechanism identifier, the instruction identifier and the proportion information inthe instruction in the control instruction, and forms control data corresponding to the execution mechanism according to the execution mechanism identifier, the instruction identifier and the proportion information; and corresponding operation is carried out on the corresponding execution mechanism through the data interface. And the boat can be conveniently controlled at any position of the boat, and rapid and safe driving control operation on the small boat is achieved.

The invention relates to a dead zone length automatic detection method in auto-levelling control for a drawing frame. The dead length for the drawing fame is determined according to the delayed tooth number of a control period relative to a feeding period. A recommended dead zone length for the drawing frame having the corresponding model is set as the reference, and a measurement interval is obtained by adding a set length to the reference or reducing the set length from the reference. During an operation process of the drawing frame, values within the measurement interval are input to a control module, CV% values corresponding to the values within the measurement interval are calculated through the control module in the drawing frame, and the value within the measurement interval and corresponding to the minimum CV% value is employed as the optimum dead zone length. According to the invention, the optimum dead zone length for the drawing frame can be automatically found, so that control errors due to speed fluctuation can be avoided, the auto-levelling control can be more accurate, and therefore the working efficiency is improved.

The invention discloses an auxiliary oil injection device comprises a transformer. The device comprises a transformer body and an auxiliary oil injection device body, an oil injection opening is formed in the top end of the transformer body, the auxiliary oil injection device body comprises a flow distribution box and a control box, the flow distribution box is fixedly installed at the bottom endof the oil injection opening and communicates with the oil injection opening, and a plurality of flow distribution pipes are connected to the bottom of the flow distribution box; the other ends of theflow distribution pipes are arranged downwards and are close to the bottom face of the transformer body, a guide rod is vertically and fixedly installed at the bottom of the flow distribution box, afloating ball type liquid level sensor is installed on the guide rod, a fixing base is fixedly installed on the side, close to the connecting position of the guide rod, of the flow distribution box, and an air pressure sensor is fixedly installed on the fixing base. The auxiliary oil injection device for the transformer is simple and reasonable in structure, novel in design, capable of effectivelysaving oil injection time and improving oil injection efficiency and use safety of the transformer, and is convenient to widely popularize and use.

The invention discloses a surface acoustic wave-based shape memory composite member controllable deformation three-dimensional printing method. Two pairs of surface acoustic wave transducers are orthogonally arranged around a printing liquid tank, a photosensitive prepolymer formed by mixing a shape memory photosensitive material and silver nanoparticles is arranged in the printing liquid tank ina transducer working area, an ultraviolet light projection system is positioned below the transducers, ultraviolet light modulated with patterns is projected on the lower surface of the photosensitiveprepolymer, and a printing platform is arranged on an electric z-axis translation platform; and the surface acoustic wave transducers excite an ultrasonic energy field, the silver nanoparticles in the photosensitive prepolymer are linearly arranged under the action of sound field force, the ultraviolet light with the patterns is irradiated on the surface of the photosensitive prepolymer, a single-layer structure with complex silver nanowire patterns is obtained by selective area curing, and multi-layer printing is realized by lifting the z-axis platform. The method can realize manufacturing of a shape memory composite member capable of accurately controlling local deformation.