74results about How to "Real-time speed adjustment" patented technology

The invention relates to the field of exercise equipment, in particular to an intelligent running machine. The intelligent running machine comprises a running machine body, a tablet personal computer which is arranged on the running machine body, a flexible array pressure sensor which is arranged on the running machine body, a control module which is arranged on the tablet personal computer, a data acquisition module and a motor drive module. An internet function is integrated in the control module of the running machine, and each running machine uploads a relationship model and a training program which are established according to individual characteristics through network to a server for storage so as to realize identity authentication. Multiple kinds of training modes and virtual scenes are integrated in the control module; the training program which meets an exerciser is customized in a personalized way; foot pressure distribution information of the exerciser, which is detected bythe flexible array pressure sensor, and the real-time heart rate which is sent by a heart rate monitoring module are received in real time; running speed, gradient and the like can be adjusted automatically; safety of the exerciser can be guaranteed; and training modes can be enriched and training efficiency can be improved.

The invention relates to control technologies of variable frequency air conditioners, discloses a control method for an outdoor direct current fan of the variable frequency air conditioner, and solves the problem that in traditional technologies, the revolving speed of the outdoor direct current fan of the variable frequency air conditioner cannot be matched with a system optimally, and as a result, the capacity and the reliability of the system are influenced. The method comprises the steps that the original revolving speed of the direct current fan is determined according to the frequency of a compressor and the outdoor environment temperature; in the running process of the compressor, the revolving speed of the direct current fan is adjusted in real time according to current system parameters, such as the outdoor coil temperature, the IPM temperature, the exhaust temperature and the environment temperature, and the stepless speed regulation function of the fan revolving speed is achieved; and after the compressor is stopped, the outdoor coil temperature and the IPM temperature are detected, whether the fan runs or not, the running speed of the fan and the running time of the fan are determined according to the temperatures. According to the control method, compared with an original control scheme in which the fan is stopped when the compressor is stopped, the temperature of the corresponding system can be reduced rapidly, the method is beneficial to shortening the time of system recovery due to the fact that the overheated system results in shut down of the compressor, and the time interval of once again start of the compressor is shortened.

The invention relates to a full-closed loop electro-hydraulic servo plate bending machine which comprises a frame, master cylinders, a vertical plate, a mechanical deflection compensating workbench, a slide block and a numerical control system, wherein the master cylinders are located on the two sides above the frame; the vertical plate is located on the lower part of the frame; the mechanical deflection compensating workbench is located on a lateral side of the upper part of the vertical plate; the slide block is located above the vertical plate; the numerical control system is located on the frame; the full-closed loop electro-hydraulic servo plate bending machine is characterized by further comprising a hydraulic system and a servo motor which are connected with the numerical control system, and an oil pump which is connected with the servo motor; the hydraulic system is connected with the oil pump and the cylinder; a cylinder piston rod of the cylinder is connected with the slide block; a pressure value is closed-loop fed back to a servo driver by a machine tool; the system pressure is controlled by adjusting the rotating speed of the oil pump motor by the servo driver, so that the full-closed loop control is realized. The pressure of the hydraulic system is accurately closed-loop controlled by a servo system provided by the invention, so that the stability of the hydraulic pressure is ensured, the flow of the whole hydraulic system is subjected to accurate closed-loop control, and the overflow quantity is reduced.

The invention provides an intelligent assistance draw-bar box. A spherical hinge is arranged on a connecting supporting point of a drawing bar and a box body of the draw-bar box. A spring balancer is arranged between a bar body of the drawing bar and the box body. The spring balancer is arranged on the box body fixedly and correspondingly. A reset end of the spring balancer is elastically connected with the bar body of the drawing bar. The intelligent assistance draw-bar box comprises an intelligent assistance controlling system. The intelligent assistance controlling system comprises a moving direction collecting module, a central control module and a power driving module, wherein the moving direction collecting module is arranged on the drawing bar and is used for collecting the moving directions of the drawing bar, the central control module is arranged on the box body and is used for controlling the moving modes of the draw-bar box through the moving directions of the drawing bar, and the power driving module is connected with the central control module and is used for driving return pulleys of the draw-bar box to move. The power driving module is connected with the return pulleys of the draw-bar box in a power mode. According to the intelligent assistance draw-bar box, the intelligent assistance control system is arranged additionally, the magnitude and the directions of the force which is exerted on the drawing bar are collected, real-time adjusting is carried out on the rotating speed of the return pulleys of the box body, and therefore the aim of the intelligent assistance on the draw-bar box can be achieved.

The invention discloses a computer heat dissipation control method and a computer case. The method comprises the following steps that: obtaining the average temperature value of each season of an areawhere a computer is positioned each year; according to the area where the computer is positioned, the season and the average temperature value of the season, confirming the initial speed of a heat dissipation fan; controlling the heat dissipation fan to operate by the initial revolving speed; controlling a first temperature sensor to detect the temperature of a CPU (Central Processing Unit), andobtaining the temperature value, which is detected by the first temperature sensor, of the CPU; and according to a comparison structure, controlling the opening and the closing of the heat dissipationchannel of the heat dissipation fan. By use of the method, according to data, including the area where the computer is positioned, the season, the temperature of the CPU, environment temperature andthe like, the revolving speed of the heat dissipation fan is controlled in real time, the revolving speed of the heat dissipation fan is increased when the CPU is overheated, and meanwhile, the heat dissipation channel is opened to be fully cooled; when the temperature of the CPU is under a normal range, the revolving speed of the heat dissipation fan is regulated in real time, and resources are saved while cooling is carried out; and when the CPU is at a low temperature, the heat dissipation fan stops operating, and resources are saved while the CPU is guaranteed to be normally operated.

The invention discloses a nursery stock winding and packaging machine which comprises a winding frame. The winding frame is provided with a tying groove for containing stocks. An opening is formed in one side of the tying groove. A winding ring coaxial with the tying groove is arranged on one side of the winding frame. A film roll is connected to the winding ring. A circular ring is arranged at the opening in one side of the winding ring. The edge of the winding ring is clamped through multiple sets of friction wheels connected to the winding frame. The friction wheels are driven by a friction wheel motor. An inductance type transducer sets the stroke for a proximity switch to complete translation motion. A supporting and stretching mechanism is used for supporting and adapting to the nursery stocks with different lengths. According to the machine, screw motion of a film is completed, the film can be wound around a needed product so as to achieve packaging, the semi-automatic packaging effect is achieved, manpower and material resources are reduced, and therefore the production efficiency is improved.

The invention provides an intelligent running machine which comprises a runway platform, a motor for driving the runway platform to rotate, two supporting rods connected with the runway platform and extending towards the upper portion of the runway platform, and handrails. The tops of the two supporting rods are provided with an operation platform, and the handrails are connected with the operation platform. The operation platform is provided with an operation panel and a tablet personal computer. Accordingly, the heart rate is combined with the time, hang time, distance, speed and the like of a runner. Through gait tracking, the running posture and movement of the trainee are analyzed, and effective help is provided for scientific training. Real-time detection results are fed back to a control module, and the control module can adjust the speed of the running machine in real time, so that passive control over the running machine in the prior art is changed to be active control over the speed.

The invention provides a controlling method for wrapping the surface of a tire, comprising the following steps: an industrial personal computer (IPC) analog simulates the deformation of rubber pieces in the process of spire piling and the arrangement distribution situation of the each rubber piece in the surface of the tire to obtain spire pitches among each rubber piece; the IPC computes the virtual circle central coordinate and the radius of a wrapper at each loop of the arc of the surface of the tire, and sends a date to a PLC; the IPC respectively computes the arc of the each loop of the arc section of the surface of the tire, the horizontal coordinate of the each loop of the linear section of the surface of the tire and a corresponding theoretical velocity, to form a data table to be sent to the PLC; the PLC computes the real velocity of the wrapper according to the received data table; and the PLC computes to obtain a track coordinate data of the wrapper corresponding at the each loop and finally controls the wrapper to wrap the surface of the tire. The method realizes analog simulation in the process of wrapping the surface of the tire, adjusts the walk track and the walk velocity of the head of the wrapper immediately, and greatly improves the wrapping quality of the surface of the tire.

The invention relates to a device for winding or coiling or placing of filament-shaped materials, in particular to a concentric type double-motor control wrapping machine which comprises a main shaft, a first belt wheel, a second belt wheel, a rotating disc and a wrapping belt disc. The first belt wheel, the second belt wheel, the rotating disc and the wrapping belt disc are arranged on the main shaft from left to right in a penetrating mode. A third belt wheel and a fourth belt wheel are arranged on a frequency changing motor respectively and are used for driving the first belt wheel and the second belt wheel to rotate through a synchronous belt. A movable support is further included. A guiding belt component is arranged on the movable support. A wrapping belt forms spiral winding on the belt guiding component, and finally the wrapping belt is evenly and stably wrapped on the surface of a cable. The concentric type double-motor control wrapping machine is stable in structure, eccentricity and vibration cannot happen easily, small tension can be obtained, a tension value can be adjusted on line, the requirement for mounting accuracy is low, maintaining cost is low, and the wrapping belt can be evenly and stably wrapped on the surface of the cable.

The invention relates to a flocculator mixing condenser, in particular to an intelligent and high-efficient dynamic flocculator mixing condenser, a technical problem to be solved is to provide an intelligent and high-efficient dynamic flocculator mixing condenser capable of mixing uniformly and adjusting the addition amount of the flocculator in real time, the technical scheme is as follows: a mixing container is mounted on a rack, stirring blades are disposed in the mixing container, the stirring blades are installed on a stirring shaft, the stirring shaft is installed at the rack through the bearing seat, an inverter motor is connected to the shaft end, the upper part of the mixing container is provided with a feed port, the lower part of the mixing container is provided with discharge port, a flocculant storage tank is communicated with the feed port sequentially through the solenoid valve and metering pump, flow concentration sensors are disposed on the feed port and the discharge port, a speed sensor is arranged in the mixing container; said inverter motor, the flow concentration sensor and the speed sensor are connected to and controlled by industrial control computers. The flocculator mixing condenser is simple, convenient and widely used in the flocculation mixing agent.

The invention discloses a vehicle engine cooling fan and a control method. The vehicle engine cooling fan comprises a cooling fan belt wheel, an electromagnetic clutch, a planet gear row, an electricmotor and a cooling fan body; the engine is connected with the cooling fan belt wheel, the electromagnetic clutch is a single-engagement position type clutch, the active end of the electromagnetic clutch is connected with the cooling fan belt wheel, the passive end of the electromagnetic clutch is connected with a gear ring of the planet gear row, a planet wheel of the planet gear row is connectedwith a rotor of the electric motor through a planet carrier of the planet gear row, and a rotor of the electric motor is a hollow shaft, and is arranged on a rotating shaft between a sun wheel of theplanet gear row and the cooling fan body through a bearing in a sleeving manner. The problem that a traditional vehicle cooling fan cannot be subjected to active speed adjusting in the work process,and the power source is single is solved. The cooling fan can carry out cooling fan power source switching and speed adjusting in real time through the flexible control strategy.

The invention discloses an unmanned aerial vehicle carrying type pesticide spraying system. The system comprises an airborne end decoding deck, a ground end control module, and further comprises a pesticide barrel, a water pump, a direct current motor, a mechanical spray nozzle which are connected in sequence, the airborne end decoding deck is further connected with airborne batteries, an attitude acquisition module and a system data storage module; the airborne batteries are respectively connected with the pesticide barrel, the water pump and the direct current motor; the ground end control module is connected with a power supply and a display screen. According to the unmanned aerial vehicle carrying type pesticide spraying system, closed-loop control is conducted on the rotating speed of the water pump and the direct current motor, and therefore the precision of the water pump flow quantity control is improved; a speed acquisition module is designed on the direct current motor, and therefore the rotating speed of the direct current motor is convenient for the airborne end decoding deck to regulate in real time, so that the radius, the atomization effect and the uniformity degree of pesticide spraying can be accurately controlled; the pesticide spraying system is carried by the unmanned aerial vehicle, and the ground end control module communicates with the airborne end decoding deck, which is beneficial for the achievement of pesticide spraying operation of large-scale crops.

The invention relates to a planetary gear row-based dual-power source vehicle air conditioning compressor capable of performing active speed governing. The planetary gear row-based dual-power source vehicle air conditioning compressor capable of performing active speed governing mainly comprises a belt pulley, an electromagnetic clutch, a planetary gear row ring gear, a planetary gear row planetary gear, a planetary gear row sun gear, a planetary gear row planetary carrier, a motor rotor, a motor stator, a compression pump and a control unit. The belt pulley is connected with an engine accessory belt pulley through an engine accessory belt. The rear end of the belt pulley is the active disk of the electromagnetic clutch. The driven end of the electromagnetic clutch is connected with the planetary gear row ring gear. The planetary gear row sun gear is connected with the input end of the compression pump. The planetary gear row planetary carrier is connected with a motor. Connection andseparation control of the electromagnetic clutch and rotational speed control of the motor are realized through the control unit, and thus switching of power sources and active governing of rotationalspeeds of the compression pump are achieved.

The invention discloses a control method of a gas water heater and the gas water heater, and relates to the field of gas water heaters. The control method of the gas water heater comprises the steps that gas content of one or more gases in flue gas at a flue gas outlet is detected, and combustion efficiency is calculated according to the gas content; the air supply amount and the rotating speed ofa fan used for maintaining the optimal combustion working condition are obtained according to the combustion efficiency; and the rotating speed of the fan is adjusted according to the air supply amount and the rotating speed of the fan in the optimal combustion working condition. The invention further discloses a gas water heater. The gas water heater comprises a gas sensor, a control module anda rotating speed control module. According to the control method of the gas water heater, the combustion efficiency is calculated through the content of one or more gases in the flue gas, then the airsupply amount and the rotating speed of the fan used for maintaining the optimal combustion working condition are obtained, and next the rotating speed of the fan can be adjusted in real time so as to provide the optimal air supply amount and to reach the optimal combustion working condition, so that performance of the gas water heater is improved.

The invention discloses a magnetic suspension outer culvert fan used for an aero-turbofan engine. The magnetic suspension outer culvert fan comprises an outer casing, a distribution casing, a hub, fan blades, blade tip magnetic rings and the like, wherein the outer casing comprises coils which are distributed on the outer casing body and have different winding directions, a controller and an axial displacement sensor. Each blade tip magnetic ring part comprises permanent magnets circumferentially arranged on the magnetic ring. The fan blades are mounted on the hub. The permanent magnets surround the hub circumferentially. The distribution casing comprises a coil surrounding the distribution casing body, a radial displacement sensor and a controller. The outer culvert fan has no mechanical relation with the internal turbojet engine, and thus the rotation speed of the fan can be adjusted in real time. The working efficiency of the aero-turbofan engine is greatly improved, the steps of a low-pressure gas compressor and a turbine are lowered, the engine mass is lowered, and the engine overall performance is improved. The design difficulty and the machining difficulty of the aero-turbofan engine are greatly lowered.

The invention provides a data sharing system for running machines for rehabilitation. Each running machine for rehabilitation comprises a rehabilitation platform and two bracing rods connected with the rehabilitation platform; an operating platform is arranged on the tops of the bracing rods, horizontal armrests connected with the operating platform are arranged, a vertical armrest is arranged to be connected with the corresponding horizontal armrest in a bent mode, and the bottom end of each vertical armrest is fixed at the tail end of the rehabilitation platform; a protection band is arranged on the horizontal armrests, the two ends of the protection band are connected with the horizontal armrests on the two sides of the rehabilitation platform respectively, the front end of the rehabilitation platform is provided with an elastic cushion, the bottom of the front end of the rehabilitation platform is provided with fixing parts, the upper end of each fixing part is connected with the bottom end of the corresponding bracing rod, a fixing rod is connected to the horizontal end of each fixing part, and the bottom end of each fixing rod is provided with a rubber type suction cup. A tablet personal computer judges the current rehabilitation state of a convalescent patient according to data sent by a joint motion data acquisition module and an electromyography data acquisition module and displays the rehabilitation state of joints and muscles on a touch screen, and the convalescent patient can know the physical state of his / her own more visually.

The invention provides a multifunctional rehabilitating treadmill. The multifunctional rehabilitating treadmill comprises a rehabilitating platform, and two supporting rods connected with the rehabilitating platform, wherein an operating platform is arranged at the tops of the two supporting rods; horizontal handrails are connected with the operating platform; vertical handrails are connected with the horizontal handrails in a bending manner; the bottom ends of the vertical handrails are fixed to the tail end of the rehabilitating platform; a protective belt is arranged on the horizontal handrails; the two ends of the protective belt are connected with the horizontal handrails on the two sides of the rehabilitating platform respectively; an elastic cushion is arranged at the front end of the rehabilitating platform; fixing components are arranged at the bottom of the front end of the rehabilitating platform; the upper ends of the fixing components are connected with the bottom ends of the supporting rods; the horizontal ends of the fixing components are connected with fixing rods; rubber sucking discs are arranged at the bottom ends of the fixing rods. According to data sent by a joint activity data acquisition module and a myoelectric data acquisition, a tablet computer judges the rehabilitation state of a current rehabilitee, and displays the rehabilitation states of joints and muscles on a touch screen, so that the rehabilitee can know the own body state more intuitively.

The invention provides a weighing and weight losing integrated extrusion control system and method. The system conducts automatic matching on raw materials through a PLC, a raw material matching unit and a weighing sensor, the rotating speed of a threaded rod of an extruder is regulated through the PLC, an extrusion rotating speed control unit and an extrusion driver so that raw materials can be automatically extruded, the yield of extruded products is controlled to reach the set yield value and be kept stable, the rotating speed of a traction device is regulated through the PLC, a traction rotating speed control unit and a traction frequency converter so that automatic traction can be achieved for the extruded products, and the thickness or the gram weight of the extruded products can be kept stable. By means of the weighing and weight losing integrated extrusion control system and method, raw materials can be automatically and precisely matched, the quality of the products is improved, it is ensured that the yield of the extruded products is stable, the service life of the threaded rod of the extruder is prolonged, the stability of the thickness or gram weight of the extruded products is ensured, and the accuracy and stability of the products are improved.

The invention discloses a power-assisted propulsion system and a propulsion assisted vehicle, wherein the power-assisted propulsion system comprises a stress detection module, a signal processing module, a driving module a speed sampling module and a motor; the stress detection module is connected with a signal processing module; the signal processing module is also connected with a motor through the driving module; one end of a speed sampling module is connected with the motor, and the other end of the signal sampling module is connected with the signal processing module, wherein the stress detection module detects magnitude and direction of external push force into a first electrical signal; the signal processing module outputs a control signal according to the first electrical signal and the second electrical signal and controls the speed and direction of the motor through the driving module. The technical scheme can improve speed regulating performance of the power-assisted propulsion system.

The invention discloses a method for controlling the rotating speed of a fan of a natural wind air conditioner. The method for controlling the rotating speed of the fan of the natural wind air conditioner comprises the steps of obtaining the wind speed of a wind outlet of the air conditioner in the current period, determining the wind speed of the wind outlet of the air conditioner in the next period according to the wind speed of the wind outlet of the air conditioner in the current period and natural wind characteristic parameters of the next period, and regulating the rotating speed of the fan according to the wind speed of the wind outlet of the air conditioner in the current period and the wind speed of the wind outlet of the air conditioner in the next period. According to the method for controlling the rotating speed of the fan of the natural wind air conditioner, the problems that indoor outlet wind changes along with outdoor natural wind, and consequently wind supply stability is poor and the human body feels bad in the prior art can be solved.

The invention discloses a high sealing performance device for mining drill bit polishing. The high sealing performance device comprises a sealing gasket, tool chucks, a driving mechanism, a cover, fixing sleeves, brush bristle, a polishing shell, tools, a fixing shaft, sealing rings, a cleaning ring, a movable plate, a nut seat, a first gear, a second gear, a connection shaft, a rotary head, a screw, a movable sleeve, a viewport, first lock screws and second lock screws. The high sealing performance device has the advantages of being reasonable and simple in structure and low in production cost, the tools are installed on the tool chucks in a clamped mode at first, then, the tools are inserted into an abrasive in the polishing shell, the arranged movable plate can be adjusted up and down as required, accordingly, the abrasive can make contact with the cutting edges on the lower sides of the tools better, the polishing use requirements of tools different in length are met, and the polishing quality and efficiency of the tools are improved; then, the driving mechanism is started to drive the tools to rotate to be subjected to polishing operation; and through the sealing gasket, leakage of the abrasive during polishing can be effectively avoided, and accordingly, the working environment quality is improved.

The invention discloses a molecular pump which comprises a process parameter input unit for inputting a process parameter requirement on a current procedure, an equipment control and analysis system for receiving input information of the process parameter input unit, selecting a rotating speed of a rotating vane of the molecular pump according to an air extraction efficiency characteristic curve of the molecular pump and generating a corresponding rotating speed control instruction, a molecular pump controller for receiving the rotating speed control instruction output by the equipment control and analysis system and adjusting power input into a vane rotating driving device through a PID adjuster to adjust the rotating speed of the rotating vane of the molecular pump, and a rotating speed feedback unit for feeding the rotating speed of the rotating vane of the molecular pump in real time to the equipment control and analysis system to match the air extraction efficiency of the molecular pump with the process requirement of the current procedure. The molecular pump can adjust the rotating speed of the rotating vane of the molecular pump in real time according to the process parameter requirement of the current procedure to improve the controllability and uniformity of the air extraction efficiency; and furthermore, the energy consumption is reduced, energy is saved, and emission is reduced.

The embodiment of the invention provides a cross-flow fan and an air conditioner. The cross-flow fan comprises at least two supporting discs arranged in a spaced manner, wherein one supporting disc isrotationally and coaxially connected with a steering gear; and a plurality of moving fan blades are mounted on the supporting discs at intervals in the circumferential direction in a swinging manner,and the plurality of moving fan blades are connected to the steering gear so as to swing relative to the supporting discs along with rotation of the steering gear. According to the cross-flow fan, anexisting fixed fan blade structure is improved, the air outlet angle of the fan blades can be adjusted in real time according to the air volume requirement, power waste of a main motor for adjustingthe rotating speed is reduced, and noise caused by the too large rotating speed is prevented.

The invention provides a rehabilitation walking machine which comprises a rehabilitation platform and two supporting rods connected with the rehabilitation platform. An operating platform is arranged at the top of the two supporting rods; horizontal armrests connected with the operating platform and vertical armrests in bent connection with the horizontal armrests are arranged, and the bottom ends of the vertical armrests are fixed to the tail end of the rehabilitation platform. The horizontal armrests are provided with protective strips, the two ends of the protective strips are connected with the horizontal armrests on the two sides of the rehabilitation platform respectively, the front end of the rehabilitation platform is provided with an elastic cushion, the bottom of the front end of the rehabilitation platform is provided with a fixed part, the upper end of the fixed part is connected with the bottom ends of the supporting rods, the horizontal end of the fixed part is connected with a fixed rod, the bottom end of the fixed rod is provided with a glue sucker. The fixed rod is in inserted connection with a movable rod, and the fixed rod is fixedly locked with the movable rod through a plug pin. A convalescent patient stands on the rehabilitation platform, and the protective strips are wound around the waist; when buckles are buckled, both hands can be supported through the horizontal armrests; during the running of the rehabilitation platform, the convalescent patient slowly walks to achieve the effect of exercising lower limbs.

The invention relates to a variable-frequency ventilation system for a cabin which comprises a cabin variable-frequency fan control system, an IAS whole-ship alarm system, a frequency converter, an air brake control motor, a temperature sensor, a differential pressure sensor, a variable-frequency fan and an electric air brake. And the cabin variable-frequency fan control system is connected with the IAS whole-ship alarm system. The rotating speed of the exhaust fan is preferentially adjusted in real time according to the differential pressure signal; the pressure difference in the cabin is kept at a set value (such as 30Pa), and when the temperature meets the requirement and the rotating speed of the exhaust fan is reduced to the minimum, the pressure difference in the cabin is still lowerthan the set value (such as 15Pa), so that the rotating speed of the air feeder is adjusted in real time, and ventilation and temperature adjustment are realized.

The invention discloses a non-woven fabric hot rolling mill hydraulic control system which comprises a controller, an upper pressure roll, a lower pressure roll, a hydraulic cylinder, a pressure sensor and a hydraulic pump; the upper pressure roll, the lower pressure roll, the hydraulic cylinder, the pressure sensor and the hydraulic pump are electrically connected with the controller; and the pressure sensor monitors pressure applied to the hydraulic cylinder in real time and converts a pressure signal to an electric signal, and the controller further converts the electric signal to a rotational speed corresponding to the hydraulic pump to regulate the rotational speed of the hydraulic pump in real time, so that the technological demands of a non-woven fabric are met. Through the controlsystem disclosed by the invention, the hydraulic pump can be automatically and accurately controlled, so that the working efficiency and the quality of a product are improved.

The invention relates to the field of conveying control of logistics conveying lines, and particularly discloses a control method for automatically positioning an intelligent logistics conveying line.The method is characterized in that the conveying line is provided with a camera and a material arranging mechanism, a transmission motor of the conveying line is controlled by a frequency converter,the working frequency of the frequency converter is corrected by an output control quantity of a PID controller, a conveying target station of the conveying line is provided with a target station detection system, by means of the method, a situation of the conveying line is collected through the camera, a target material and information of the target material are identified and judged and conveyed to the target station detection system, a position value is conveyed to the PID controller, whether material blockage occurs or not is judged and treatment is carried out, the PID controller calculates a control quantity to control the frequency converter to correct the working frequency, in-place confirmation and information checking are carried out on a conveying target station to judge whether material leakage occurs or not, by means of the method, the problems that an existing automatic logistics conveying line cannot accurately convey objects to a designated operation station, and the material blockage and the material leakage occur are effectively solved, and the logistics transfer success rate and efficiency can be effectively improved.

The invention discloses agricultural equipment for quick lossless unhusking of oats. The agricultural equipment comprises a frame, a unhusking bin, a motor bin, a feed hopper, a lossless rolling device, a husk discharge hopper, a discharge cylinder, a material detecting control mechanism and a motor rotating speed adjusting transmission mechanism; the unhusking bin is fixedly welded at the right part of the upper end surface of the frame; and the material detecting control mechanism is movably connected to the right upper place of an internal cavity of the unhusking bin. Through mutual cooperation of suck parts as the material detecting control mechanism and the motor rotating speed adjusting transmission mechanism, the rotating speed of the motor of the equipment can be adjusted in real time according to the flow of the oats passing through the feed cylinder part of the equipment in the quick lossless unhusking process of the oats; and when the oat unhusking demand is higher, the rotating speed of the motor of the equipment can be guaranteed to meet working demands, so that the oat unhusking quality and efficiency are guaranteed, and the practical performance of the equipment is effectively improved.

The invention discloses an electronic direct current conversion device, a printed circuit board (PCB) and an electronic direct current conversion method. The electronic direct current conversion device is used for supplying direct current voltage to an electronic controller of an engineering machinery electronic control engine and comprises a low-pass filter circuit, wherein the low-pass filter circuit comprises a filter resistor and a filter capacitor, which are connected with each other; one end of the filter resistor is connected with a pulse width modulation (PWM) signal output end of an engineering machinery controller; and an output end of the filter capacitor is connected with the electronic controller. By the invention, a PWM signal which is output by the engineering machinery controller can be converted into the direct current voltage, and the rotating speed of the engine is regulated in real time.

The invention discloses a case temperature control device. The device comprises a fixing frame, wherein one side of the fixing frame is provided with an exhaust fan, the other side of the fixing frameis provided with a circuit board, the circuit board is provided with a central processing unit, a display, a temperature sensor I, a temperature sensor II, a real-time clock, a TF card and a power supply module for supplying power to the central processing unit; a motor of the exhaust fan, the display, the temperature sensor I, the temperature sensor II, the real-time clock and the TF card are electrically connected with the central processing unit; a movable plate is arranged on the other side of the fixing frame; a through hole II matched with the display is formed in the movable plate; a cavity is formed between the movable plate and the fixing frame; and a filter screen is arranged in the cavity. According to the invention, the rotating speed of the exhaust fan can be adjusted according to the temperature difference between the interior and the exterior of the case, and energy is saved; the temperature of the case and the running state of the fan are effectively monitored, the time when the temperature exceeds the limit value, the temperature data inside and outside the case and the rotating speed of the exhaust fan are recorded in the TF card, and post-analysis is facilitated.