106results about How to "Low cost control" patented technology

The invention relates to a structure of an IGBT (insulated gate bipolar translator) inverter welding machine with two welding functions. The inner part of the welding machine is divided into left and right side layouts, wherein parts such as circuit boards, a cooling fan and the like are arranged at one side, and parts such as a wire feeding mechanism, an electric reactor and the like are arranged at the other side. One of the two circuit boards is a display and operation control panel, six nixie tubes and display control circuits thereof are designed on the display and operation control panel; the six nixie tubes and display control circuits thereof are divided into two groups which are respectively used for displaying current and voltage parameters; and a manual welding/gas-shield welding method conversion button, a gas-shield welding 2T/4T welding gun switch operating mode selecting button, a voltage, current and wire feeding speed unit indicator lamp, an overheat indicator lamp as well as a current wire feeding speed, voltage and electronic electric reactor inductance parameter setting and regulating potentiometer are further arranged on the display and operation control panel; and electronic parts and components are arranged on both surfaces of the other large circuit board. According to the structure, the welding method is multifunctional, the problem that single-functional welding machine is narrow in application range is solved, and the circuit principle, the circuit boards and the integral structure of the welding machine are also unique.

The invention relates to an IGBT inverter multi-function welding machine with liquid crystal display and multi-input voice prompt functions. The power source of the IGBT inverter multi-function welding machine is 220-240V or 110V-120V; and the interior of the IGBT inverter multi-function welding machine is designed to be of a left-and-right side structure. Components such as a circuit board, a cooling fan and the like are arranged on one side of the interior of the IGBT inverter multi-function welding machine; components such as a wire feeding mechanism and the like are arranged on the other side of the interior of the IGBT inverter multi-function welding machine; the circuit board is designed into three pieces, one piece is a liquid crystal display and operation control board, the secondpiece is a switching control board which can realize automatic identification, detection and conversion control of an input voltage, and the third piece is a main control board; and the IGBT invertermulti-function welding machine is mainly composed of an inverter main circuit consisting of input voltage detection, power-on buffering, rectification and filtering, IGBT inverter, a main transformer,output rectification, filtering and the like, a switching power circuit, an inverter PWM and IGBT drive circuit, a wire feeding and solenoid valve control circuit, an output characteristic control circuit and the like. The IGBT inverter multi-function welding machine not only has a multi-function welding method, but also solves the problem of narrow application range of a multi-power-source and single-function welding machine.

The invention discloses a freeze dryer. The freeze dryer comprises a freeze-drying cavity and a cold-trap cavity. A supporting plate and a plurality of freeze-drying plate layers arranged above the supporting plate are arranged in the freeze-drying cavity, a lifting and dropping driving piece used for driving the supporting plate and the freeze-drying plate layers to lift and drop is arranged on the freeze-drying cavity, the freeze-drying cavity is arranged above the cold-trap cavity, the freeze-drying cavity is communicated with the cold-trap cavity through a through hole formed in the bottom of the freeze-drying cavity, and the supporting plate covers the through hole when the supporting plate drops to the bottom of the freeze-drying cavity so that the freeze-drying cavity can be separated from the cold-trap cavity. The freeze dryer has the advantages of being simple in structure, low in cost, small in occupied space, low in pollution risk and the like.

The invention discloses a load simulator system driven by two motors. The system includes a main control computer, a cooperative motion controller, a torque loading motor, a torque compensating motor, a motor driver, a torque sensor, rotating speed sensors, an angle sensor and a signal acquisition system and the like and the load simulator system is connected with a test steering engine through permanent-magnet eddy current drive systems and a torque transmission device. The load simulator driven by the two motors breaks through a conventional single-motor loading structure and through cooperative motion control and mutual complementarity of the two motors, effects of a redundant torque can be eliminated better and thus loading precision and dynamic responding speed of a torque load can be improved effectively.

The invention relates to a city high-density wind environment simulation wind tunnel system based on an intelligent interactive platform. The tunnel system is formed by a stabilization section, a contraction section, an experiment section, an expansion section and a fan section, which are connected in sequence. The stabilization section is formed by a first cavity wall and a rectification device embedded in the first cavity wall; the contraction section is formed by a second cavity wall; the experiment section is formed by a third cavity wall, a disk device, an opening observation door device, a simulation measurement device and a material box, wherein the disk device is arranged to the inner bottom portion of the third cavity wall; the opening observation door device is arranged to the side wall of the third cavity wall; the material box and the simulation measurement device are arranged in the third cavity wall; the expansion section is formed by a fourth cavity wall; and the fan section is formed by a fifth cavity wall, a fan device and a fan section rectifying device. Under the precondition of guaranteeing required precision of the experiment, occupied volume of the wind tunnel experiment is greatly reduced; the wind tunnel system is clear in structure and small in size, and can be disassembled, transported and assembled according to functions; and by means of the intelligent platform, the wind tunnel system realizes seamless butt joint with modeling modules frequently-used in building design, and the measurement data is directly applied to the modeling process through the wind tunnel system.

The invention relates to a single-pulse laser dynamic focal spot position measuring device and method. The device comprises an optical system to be measured, a sampling mirror, a standard convergence lens, a microlens array, a CCD detector and a shell. The optical system to be measured provides a light beam to be measured. The sampling mirror samples the light beam to be measured and obtains a sampled light beam. The standard convergence lens carries out convergence processing on the sampled light beam to obtain a convergent light beam and transmits the convergent light beam to the microlens array. The microlens array is used for enabling the convergent light beam to converge again and imaging the convergent light beam on the CCD detector. The sampling mirror, the standard convergence lens, the microlens array and the CCD detector are sequentially packaged in the shell in the light path transmission direction. The technical problem that an existing focal spot measuring method is small in measuring range and not high in stability is solved, and the measuring precision and range of the whole system are high in adjustability.

To allow a robot performing a cyclic movement upon receipt of a driving force transmitted through a driving force transmission system from a driving source along with a backlash to perform the movement compensated for the backlash, during a first period within a cycle of the movement of the robot, a predetermined first movement control value is repeatedly cumulatively added with a correction value so as to be gradually biased to a predetermined second movement control value over the first period, and during a second period within that cycle, a correction value is repeatedly cumulatively subtracted from the second movement control value so as to gradually return to the first movement control value over the second period, thereby generating the movement control value for controlling the movement of the robot, and based on the movement control value thus generated, the movement of the robot is controlled.

The invention provides a microgrid system with a movable hydrogen energy emergency power supply. The microgrid system comprises a moving unit and a fixed unit detachably connected with the moving unit; the moving unit comprises a first fuel cell power generation unit, a storage battery, a first interface and a second interface which are connected to a direct current bus; the first interface is used for being connected with a hydrogen storage system stored with hydrogen, and the second system interface is used for being connected with a small turbine generator system (LLS) of a nuclear power plant, so that the moving unit serves as an electric emergency power supply for a factory; the fixed unit comprises a power generation unit detachably connected with a direct current bus, a DC/AC bidirectional converter unit connected to an alternating current bus, a load power supply unit, a grid-connected switch and a hydrogen production device; the first direct current bus is provided with a third interface and a fourth interface, wherein the third interface is used for being detachably connected with the DC/AC bidirectional converter unit; and the fourth interface is detachably connected with a photovoltaic power generation unit. According to the microgrid system, the defects existing in the existing electric emergency power supply of a nuclear power plant factory are overcome, and the nuclear safety can be greatly improved.

The invention discloses a novel composite lightweight-material low-density cement slurry system and a preparation method thereof. The novel composite lightweight-material low-density cement slurry system comprises G-level oil well cement, fresh water, a CP-56 novel composite lightweight material, a G33S oil well cement fluid loss agent, a GH-9 oil well cement retarder, a G401 oil well cement expansion agent, a USZ oil well cement drag reducer and an XP-1 defoaming agent. The novel composite lightweight-material low-density cement slurry system has the advantages that the CP-56 novel compositelightweight material, the G-level oil well cement, the fluid loss agent, the retarder, the expansion agent, the drag reducer and the defoaming agent are used to prepare the low-cost, high-strength andlow-density cement slurry systems of different specific gravity (the density of the system is 1.45-1.75g/cm<3>), the cementing requirements of low-pressure and easy-to-leak stratums of different areas can be satisfied, the hydrocarbon reservoir can be well sealed, quite low cost is achieved, and the system conforms to the purpose of energy conservation and consumption reduction of oilfield production units.

The invention discloses a micro motor shell. A cylinder body is formed by using sheet metal through winding, and then a first splicing end and a second splicing end are mutually spliced and buckled soas to ensure the structural strength of splicing. A first end cap and a second end cap are matched by using a first bending tongue, a second bending tongue and a third bending tongue so that fixing is quite convenient. Besides, the invention also provides a production and forming technology of the micro motor shell. According to the technology, continuous winding and bending are performed on thesheet metal to form the cylinder body and the one-step forming structure is realized. According to the technology of manufacturing the motor shell by using winding and bending, the great structural strength can be ensured, the technology can be suitable for small quantity of production and manufacturing, and cost control of the manufacturing cost is lower in comparison with that of the conventional pressure casting mode.

The invention relates to a floor heating floor which comprises a base material layer arranged at the bottom. A decoration panel layer is attached to the upper portion of the base material layer through adhesives. Metal mesh layers are further included, the metal mesh layers are arranged between the base material layer and the decoration panel layer and are embedded in the base material layer and the decoration panel layer which are connected through pressure rolling to form an overall structure. The metal mesh layers are continuously and evenly distributed in the embedded base material layer or/and embedded the decoration panel layer, and the thickness of the metal mesh layers is smaller than or equal to the compression deformation amount of the base material layer and the decoration panel layer which are connected. A joggling groove is formed in the end of the floor, a heat conduction face is arranged on the inner wall of the joggling groove, and a tubular or linear floor heating source is contained in the joggling groove. According to the floor heating floor, traditional materials are used for achieving the purpose of adjusting heat conduction coefficients, the floor and base materials can not be layered, using is stable, the heat conduction time is short, the heat conduction efficiency is high, energy consumption is low, and the cost is low.

The invention relates to a water level monitoring method by radio frequency communication method, comprising the following steps: (1) a data processing terminal is connected with a radio frequency reader; if the connection is failed, the equipment is checked and then the radio frequency reader is re-connected; if the connection is successful, the next step is performed; (2) the data processing terminal sends a read operation control instruction to the radio frequency reader; (3) the radio frequency reader reads a radio frequency identification and sends the read data to the data processing terminal; (4) according to the data returned by the radio frequency reader, the data processing terminal looks up relevant installation position information of the radio frequency identification by combining a comparison database which is generated and stored in the data processing terminal during the write-in process of the radio frequency identification data; (5) the data processing terminal compares the read and the unread position information of the radio frequency identification according to the same water level monitoring spot and calculates the range of the present water level. The beneficial effects of the method are simplified equipment installation and convenience in realizing multi-spot water level monitoring.

The invention relates to a fuel quantity monitoring method and system based on a CAN (Controller Area Network) bus. Specific to the problems of difficulty in monitoring and measuring the fuel quantity and the like, a unique algorithm is adopted. A fuel charging event and a fuel stealing event are judged according to the continuity and stability of the fuel quantity change in combination with the unit time change quantity of fuel quantity and a statistical magnitude of the fuel quantity change. When the unit time change quantity is satisfied and the fuel quantity changes continuously and stably, an event trend, namely, a fuel charging trend or a fuel stealing trend is formed. When the trend is formed and the statistical magnitude of the change reaches a certain limit, the occurrence of the fuel charging event or the fuel stealing event can be judged, so that accurate fuel quantity monitoring is finished. High data communication real-time performance is kept among nodes of a network constructed by the CAN bus, so that the reliability and flexibility of the system can be enhanced, and the cost control, reduction of failure points and reliable mounting of a whole automobile fuel consumption system are enhanced greatly.

The invention discloses a preparation device and method of a composite down-like thermal insulation material. The preparation device comprise a base, wherein a pushing device, a drying rack and a feeding device are arranged on the upper surface of the base, the drying rack is positioned between the pushing device and the feeding device, a movable rack is slidably arranged on the upper surface of the base, and the movable rack is positioned between the pushing device and the drying rack; the pushing device drives the movable rack to move back and forth, an exhaust pipe is driven to rotate backand forth, meanwhile, a heating fan blows hot air to the exhaust pipe, and the exhaust pipe finally blows hot air to the surface of a down-like material, so that the purposes of uniform heating and over-heating prevention are achieved; when the material is transported, workers only need to place the down-like material on a base plate, then move the base plate to a corresponding position, push thepush plate to enable the material to stably move forwards to the drying rack, and toppling does not occur in the whole process; and the elastic recovery capability is high, the bulkiness is good, thecost control is low, and the preparation device is widely applied to the fields of filling and the like.

The invention discloses a treatment method of a soft clay foundation. The method comprises the steps that a, multiple water drainage plates (2) are inserted; b, multiple liquid injection pipes (3) are inserted; c, a horizontal liquid injection pipe network communicating with the top ends of the vertical liquid injection pipes (3) is laid and communicates with a liquid injection pump (6); d, a coarse sand cushion layer (7) is laid, a horizontal filtering pipe network communicating with the top ends of the water drainage plates (2) is buried in the coarse sand cushion layer (7), and the filtering pipe network communicates with a vacuum pump (10); e, a sealing system is laid on the coarse sand cushion layer (7); f, the vacuum pump (10) is started for beginning vacuumizing; g, the liquid injection pump (6) is started, and a curing agent of a bio-enzyme solution is pressed into the foundation; and h, after liquid injection is completed for a period of time, the vacuum pump (10) is started again, and vacuumizing continues to be carried out until sedimentation is stable basically. The method enables free water and bound water to be effectively drained out of the soft clay foundation.

The invention belongs to the technical field of novel skylight glass assembly for an automobile. According to the invention, the skylight glass assembly for the automobile comprises a skylight glass (1), a skylight glass frame (2), a skylight sealing strip (3), a cold glue (5) and a 3M adhesive tape (4), wherein the skylight glass (1) is connected and fixed with the skylight glass frame (2) by using the 3M adhesive tape (4) and the cold glue (5). Although the novel skylight glass assembly for the automobile, provided by the invention, still belongs to the skylight glass assembly for the viscose automobile, multiple advantages of the prior art are combined in the structure; meanwhile, the cost control, the product stability and the service life are all largely improved. The assembling process is much simpler and more convenient; and the skylight glass assembly for the automobile is largely improved in the appearance when being compared with the traditional skylight glass assembly.

The invention discloses a method for governing bumping at a bridgehead through multiple times of grouting. The method solves the problems that in the prior art, a method for governing bumping at the bridgehead is high in cost and it is difficult to carry out repeated treatment. The method has the beneficial effect that governing of the bumping at the bridgehead can be rapidly and effectively carried out. According to the scheme, the method comprises the following steps: in the roadbed filling process, a bridgehead bumping treatment component is pre-buried in a roadbed in a layered mode, the bridgehead bumping treatment component comprises a first pipe and a second pipe, the first pipe is buried in the roadbed, the second pipe is nested in the first pipe, one end of the second pipe is hollow or provided with a detachable end cover, and holes are formed in the peripheral sides of the second pipe and the first pipe; after bridgehead bumping occurs, the second pipe is rotated relative to the first pipe, and communication between the second pipe and the first pipe orifice is achieved; and high-pressure cement mortar is introduced into the second pipe separately and enters a roadbed soilbody through the holes of the second pipe and the first pipe. Thus, sedimentation is effectively reduced, and roadbed reinforcement is carried out to govern bumping at the bridgehead.

The invention discloses a flexible touch door shell for a refrigerator and a production process thereof, and relates to the technical field of household appliances. The flexible touch door shell comprises a refrigerator door shell body; one surface of the refrigerator door shell body is sprayed with a flexible touch powder spraying coating, and the other surface of the refrigerator door shell bodyis provided with foamed polyurethane foam; a refrigerator door liner is fixed to the other surface of the foaming polyurethane foam; refrigerator plastic door decoration strips are fixed to the circumferential side faces of the refrigerator door shell body, the foaming polyurethane foam and the refrigerator door liner; and the flexible touch powder spraying coating comprises solid resin, a pigment, a filler, an assistant and flexible touch powder coating. A solvent is not used during powder spraying, thus energy saving and emission reduction are achieved, the utilization rate of the single-coating coating is high, recycling can be achieved, cost control is optimized, the user experience is improved though a flexible surface coating, and the problems that in an existing coating process, multi-layer spraying is conducted, the solvent is used, consequently environmental pollution is serious, and the refrigerator door touch sense is poor are solved.

The invention relates to a water level monitoring system using a radio frequency communication method. The system comprises at least two groups of radio frequency electronic tags, radio frequency electronic tag attachments for mounting the radio frequency electronic tags, a radio frequency reader and a data processing terminal, and is characterized in that the radio frequency electronic tag attachments are perpendicular to the water level; the radio frequency electronic tags are arranged regularly in the direction perpendicular to the water level, wherein at least one group of tags are located below the water level; the radio frequency reader is mounted within effective identification range of the radio frequency electronic tags to keep radio frequency communication between the radio frequency reader and the radio frequency electronic tags; and the data processing terminal at least comprises a program control module, a data storage module and a communication interface module for implementing calculation and storage functions. The water level monitoring system using the radio frequency communication method has the following beneficial effect that 1. equipment installation is simplified; and 2. multipoint water level monitoring is convenient to implement.

The invention discloses an intelligent fuel gas LoRaWAN gateway data acquisition device and method. The device comprises a baseband chip and an LoRa module, wherein the baseband chip comprises an APPSprocessor and a MODEM processor connected with the APPS processor; the APPS processor is integrated with an LoRaWAN wireless protocol stack and internally provided with an LoRaWAN gateway applicationprogram; the APPS processor carries out wireless communication with surface tip nodes through the LoRa module; and the MODEM processor is used for carrying out data transmission with a cloud platformso as to transplant the functions of an MCU main controller into the APPS processor of the baseband chip and schedule the modules through the APPS processor. The device does not need to mount the MCUmain controller, so that the cost control, system stability and complexity are greatly reduced.