46results about How to "Solve fever" patented technology

The invention provides a power switching and controlling circuit for controlling a power adapter or battery to supply power to a load. The circuit comprises a switching circuit and a controlling circuit, wherein the switching circuit comprises a first MOS (Metal Oxide Semiconductor) transistor, a second MOS transistor, and a third MOS transistor, and the source of the first MOS transistor is electrically connected with the positive electrode of the battery; the gate of the first MOS tube is electrically connected with the control circuit, and the drain of the first MOS transistor is electrically connected with the drain of the second MOS transistor; the gate of the second MOS transistor is electrically connected with the input terminal of the power adaptor, and the source of the second MOS transistor is electrically connected with a load and then is grounded; the source of the second MOS transistor is also electrically connected with the drain of the third MOS transistor, and the gate of the third MOS transistor is electrically connected with the control circuit; the source of the third MOS transistor is electrically connected with the input terminal of the power adaptor, and the control circuit controls the first MOS transistor and the third MOS transistor to be turned on or off. Compared with the traditional universal power switching and controlling circuit, the power switching and controlling circuit has the advantages of low power consumption, small amount of heat, and high standby efficiency.

The invention discloses a remotely-controllable automobile cooling seat which is composed of an automobile seat body, a refrigeration device, an energy supply device and a control device. A cushion with air holes is arranged on the surface of the automobile seat body. The automobile seat body is internally provided with a ventilation pipeline and a ventilation opening. According to the refrigeration device, the semiconductor refrigeration technology is adopted, a radiation system composed of a bendable heat pipe, a fin-type radiating fin and an axial flow fan is arranged at the hot end of a semiconductor refrigeration chip, and the radiation strength is enhanced. The energy supply device is composed of a solar photovoltaic panel, a battery manager, a storage battery and a driving module, and absorbed solar energy is converted into electric energy to the maximum extent. Meanwhile, a temperature sensor is adopted to conduct real-time temperature sampling, a GSM module is adopted to be communicated with a core processor, and the functions of rapid remote control over the automobile seat temperature and short message reminding through mobile phone short messages are achieved. The remotely-controllable automobile cooling seat is simple in structure, efficient in operation and environmentally friendly and saves energy, the problem that the automobile seat is burning due to parking for a long time when it is hot is solved, and the riding comfort is improved.

The invention relates to the field of PFC control and discloses a control method, a control device, a PFC circuit, motor driving equipment and an air conditioner. A phase voltage of each phase branchand a direct current bus voltage output by a three-phase PFC circuit are detected, a three-phase duty ratio signal conducted by a three-phase bidirectional switch tube is determined according to the phase voltage of each phase branch and the direct current bus voltage; a bidirectional switch driving signal of the three-phase bidirectional switch tube is determined according to the three-phase dutyratio signal; a forward switch driving signal of a forward switch tube and a reverse switch driving signal of a reverse switch tube of each phase are determined according to the phase voltage and thebidirectional switch driving signal, and finally, the forward switch tube and the reverse switch tube are respectively controlled to work according to the forward switch driving signal and the reverse switch tube. The problems that in a full-conduction scheme in the prior art, a switch tube such as an IGBT generates much heat and has reverse conduction risks are solved, and the problem of currentdistortion in a complementary conduction mode in the prior art is solved, so that the working reliability of the whole three-phase PFC circuit is improved.

The invention relates to a light supplement control circuit, a DMS camera, a fatigue driving monitoring system and an automobile. The light supplement control circuit comprises an infrared light supplement lamp group, a switch circuit, a power supply input circuit and a sequential control input circuit. An input end of the sequential control input circuit is used for being connected with a DMS camera main control chip. And the time sequence control input circuit controls the on-off of the MOS tube according to the received time sequence signal transmitted by the main control chip, and therefore the working time sequence of the infrared light supplementing lamp group is kept synchronous with the exposure time sequence of the DMS camera. Based on the light supplement control circuit disclosed in the application, the infrared light supplementing lamp group and the DMS camera synchronously execute a time-sharing working mechanism, a segmented working time sequence strategy is realized, thedefects of high heat generation and obvious red storm are overcome, and the effects of reducing heat generation and weakening red storm are achieved.

The invention discloses an energy-saving environmentally-friendly contact used in a power system with alternating current of 50Hz, rated voltage of 660V and current of 630A, comprising a casing and a coil installed within the casing, a movable iron core, an immovable iron core, an immovable contact, a movable contact and a spring; the coil is winded on the immovable iron core, the movable contact is fixedly installed on the movable iron core, the movable iron core and the immovable iron core are installed correspondingly, the immovable contact is installed on the casing and provided corresponding to the movable contact, the spring is installed between the movable iron core and the immovable iron core, the movable iron core or the immovable iron core adopts magnetic steel materials having high magnetic density after magnetization and free of remaining magnets after demagnetization, thus dramatically reducing power consumption of the contactor in operation, solving the issue about the heated coil and the heated iron core and prolongs the service life, the coil is prevented from being burned as the current and noise are not formed within the coil, and shaking resulted from impact of the power net is not present either, which prominently extends the service life of the contactor.

The invention provides a wet high-speed rotating motor with a double-toothed stator and rotor. The wet high-speed rotating motor comprises a stator part, a rotor part, a front end cover with an oil inlet, and a rear end cover with an oil outlet, wherein the front end cover and the rear end cover are respectively mounted at the two ends of the stator part in a sealed way, the stator part is arranged at the outer ring of the rotor part, the two ends of the rotor part are respectively connected to the corresponding front and rear end covers in a coupling way, the stator part comprises a flux sleeve and a stator component, the two ends of the stator part are respectively connected with the corresponding front and rear end covers fixedly, and the flux sleeve is arranged at the outer ring of the stator part. The wet high-speed rotating motor has the main beneficial effects that an axial phase split is adopted to ensure simple structure and low cost; the lubricating manner is simple and reliable and is low in cost; the problem that the motor generates a large quantity of heat when the motor rotates at a high speed can be solved and therefore the continuous working time of the motor is prolonged.

The invention provides a heat control method and a heat control device. The method comprises the following steps: detecting the distance between one or more areas of a terminal and a predetermined test object; performing heat insulation in a first area of the terminal, wherein the first area is an area of which the distance from the predetermined test object is smaller than a first predetermined threshold; and/or, performing heat dissipation in a second area of the terminal, wherein the second area is an area of which the distance from the predetermined test object is greater than a second predetermined threshold. Through the method and the device, the problem in the related technology that heating of terminal products cannot be handled effectively is solved, heating of terminal products is handled effectively, and the user experience is enhanced effectively.

Provided is a composite support heat radiation structure of a portable electronic device, comprising a front housing and a rear housing, which are suitable for a portable electronic device. The fronthousing and the rear housing are combined into an assembly in a corresponding manner. The front housing and the rear housing of the assembly are at least provided with a composite material composed oftwo or more layers of different rigid materials through integral forming. The composite material undergoes stamping forming and is placed into a die, forming an integral body having a frame, which isthe main support body of the front housing and the rear housing. A composite support heat radiation structure is formed, and the front housing is corresponding to the rear housing, forming a heat radiating system. The invention is advantageous in that composite material is used for heat radiation, the problem that a machine body of the portable electronic device gets hot or breaks down after long-time usage can be prevented due to the fact that heat radiated by the heat source of the electronic assembly is evenly scattered in the integral cavity through the composite support heat radiation structure, and after heat exchange with the external world, the temperature of the portable electronic device will be obviously reduced compared with the core temperature of the electronic device; the performance of the electronic device can be relatively and completely developed, and better man-machine experience for consumers can be provided.

The invention relates to a wire crimping terminal which comprises a crimping terminal body made of conducting material. The crimping terminal body comprises a first-layer crimping terminal and a second-layer crimping terminal which are attached to each other. Wing parts which extend from two opposite sides of the rear portion of the crimping terminal body are used for crimping wires to the rear portion of the crimping terminal body. Each wing part comprises a front end and a rear end. The first-layer crimping terminal and the second layer crimping terminal coincide and extend at least from the front ends of the wing parts. By the wire crimping terminal, the problem that the front portion of the crimping terminal generates excessive heat is solved, and mechanical connection strength of a wire crimping area and a transition area of the crimping terminal is enhanced.

The invention discloses a fireproof dust removal type cutting device for wood machining. The cutting device structurally comprises a dust removal device, a machining host, anti-slide feet, an auxiliary base, a main motor, a positioning frame, a machining table and a cutting saw web, and the top end of the machining host and the right end of the bottom of the machining table are buckled. The cutting device has the beneficial effects that the dust removal device pushes a bevel push block when wood is pushed into the machining table to be machined, and then, a main transmission mechanism and a second transmission mechanism are controlled; the main transmission mechanism drives a linkage mechanism to control a starting mechanism to start a dust collection device; in addition, the second transmission mechanism drives a movable connector on a pneumatic press to be connected with an air cooling guide mechanism and communicate with vacuum air, and accordingly, the cutting saw web is subjectedto air cooling; when the cutting device is integrally used, the cutting saw web can be cooled, moreover, the situation that the wood is ignited at the high temperature is avoided, the wood dust collection effect is greatly improved, and further optimization is achieved.

The invention discloses a composite biomass gasification furnace, which mainly comprises a gasification reaction chamber and a carbon layer gasification chamber for high-temperature reaction to generate fuel gas to form a composite gas. A biomass fuel is firstly subjected to a high-temperature cracking gasification reaction in the gasification reaction chamber to generate the fuel gas, the biomassfuel which is not completely reacted in the gasification reaction chamber is converted into biomass carbon which falls into the carbon layer gasification chamber, and then the high-temperature biomass carbon is subjected to an oxidation reduction reaction with incoming air below and water vapor generated by high temperature in a sealed water tank to generate carbon monoxide and hydrogen, so thatthe biomass fuel is converted into the fuel gas as much as possible. The composite biomass gasification furnace is characterized in that the structure is scientific, ingenious and compact, and a feedhopper with a double-layer structure can prevent the fuel gas from escaping during feeding. A hopper-cone-shaped material pulling disc prevents bridging and arching of a stock bin; a air supply pipe serves as a middle air inlet channel, and air inletting is more uniform without dead angles; a sealed water tank can prevent the fuel gas from leaking during ash discharge; and a slag breaking fire grate is extruded to break coking blocks formed by biomass ash at high temperature.

The invention discloses an efficient thermal insulation door for an oven. The efficient thermal insulation door comprises an outer door plate and an inner door plate, wherein the outer door plate and the inner door plate are connected with each other, an asbestos plate is arranged at the joint of the outer door plate and the inner door plate, and rock wool is arranged between the outer door plate and the inner door plate. Through the method, according to the efficient thermal insulation door for the oven, the heat preservation rock wool at different densities and the asbestos plate are adopted, and therefore heat in the oven is effectively prevented from being dissipated, the problem that the door plates are burning hot is solved, and the good heat preservation effect is achieved.

The invention relates to a fuel adjusting system for a heating furnace, a fuel adjusting method and the heating furnace. The fuel adjusting system comprises a first temperature monitoring unit, a second temperature monitoring unit, a mixed temperature monitoring unit, a correction temperature calculating unit for calculating the first correction temperature TU1 and the second correction temperature TU2, a first fuel control unit and a second fuel control unit. The first fuel control unit is used for comparing the first correction temperature TU1 with the mixed temperature set value T, and theflow or pressure of first fuel is adjusted. The second fuel control unit is used for comparing the second correction temperature TU2 with the mixed temperature set value T, and the flow or pressure ofsecond fuel is adjusted. The fuel adjusting system for the heating furnace, the fuel adjusting method and the heating furnace solve the problems that during heating furnace two-path design, temperature influences and mixed main pipe temperature changes of the other path need to be considered for temperature adjustment of one path, the problem that due to the improper heating furnace single-path operation temperature, deviated combustion is caused is solved, the operation period of a furnace pipe is prolonged, and the automatic control level and the economic benefits of the device are improved.

The invention provides a transmission device integrating a dynamic brake and a planetary reducer. The transmission device integrating the dynamic brake and the planetary reducer has the advantages ofbeing ingenious and compact in structure, safe, reliable and long in service life. The transmission device comprises a shell assembly, a power input shaft, a sun gear, a planetary gear, a planetary carrier and the brake, wherein the power input shaft is arranged in the shell assembly, the sun gear sleeves the power input shaft, the planetary gear is arranged between the sun gear and the inner wallof the shell assembly, the planetary carrier is fixedly arranged on a shell assembly joint, and the brake is used for braking the shell assembly.

The invention relates to the technical field of lamp illumination, in particular to an LED ceiling down lamp which comprises a lamp holder, a lamp cup and a lampshade. An LED lamp source is arranged in the lamp cup and is composed of a metal support and LED lamp beads. The metal support is of a hemispherical structure with a plurality of through holes. The LED lamp beads are fixed to the metal support through high-temperature-resistant adhesives. The lamp cup is made of aluminum alloy. Cooling fins are arranged on the outer surface of the cup body. The lampshade is made of organic glass. By means of the LED lamp source, the LED ceiling down lamp saves energy and is environmentally friendly; the cooling fins are arranged on the lamp cup, and therefore the problem that a lamp gets hot after being used for a long time is effectively solved; the LED lamp beads are arranged on the hemispherical metal support, and therefore the illumination range is enlarged, and the light source which is more uniform and efficient is obtained.

The invention discloses a fireproof dedusting cutting device for wood processing. The fireproof dedusting cutting device for wood processing structurally comprises a dedusting device, a machining mainmachine, antiskid feet, an auxiliary base, a main motor, a positioning frame, a machining table face and a cutting saw blade, and the top end of the machining main machine and the right end of the bottom of the machining table face are buckled. The fireproof dedusting cutting device for wood processing has the beneficial effects that the dedusting device pushes a slope push block when wood is pushed into the machining table face to be processed, then a main transmission mechanism and a second transmission mechanism are controlled separately, the main transmission mechanism drives a linkage mechanism to control a starting mechanism to start a dust sucking device, in addition, the second transmission mechanism drives a movable connector on an air compressor to be connected with an air cooling guide mechanism and communicate with vacuum air pressure, then the cutting saw blade is air-cooled, the cutting saw blade can be cooled when the fireproof dedusting cutting device is wholly used, high-temperature ignition of the wood is avoided, the wood bit dust collection effect is greatly improved, and further optimization is achieved.

The permanent magnet rotation coupling induction asynchronous speed regulation system with axial magnetic field structure is a permanent magnet rotation coupling induction automatic speed regulation system adopting the principle of asynchronous motor model, which has the advantages of isolating impact load, anti-low voltage blocking, high efficiency and energy saving, etc. , can be widely used in small and medium-sized motor drive and power transmission fields that require automatic speed regulation and high safety requirements. Its features are: the system consists of a permanent magnet rotary induction type asynchronous coupler body 1, a servo worm gear reduction mechanism 2, a cam-type stroke ejection adjustment mechanism 3, an automatic controller 4 and an AC asynchronous motor 5, which are integrated and installed to form electromechanical integration Structure: under the control of the automatic controller 4, the AC asynchronous motor 5 drives the permanent magnet rotor disc 1‑1 and the induction rotor disc 1‑2 to run asynchronously in the same direction, and the servo worm gear reduction mechanism 2 drives the cam type stroke ejection adjustment mechanism 3 Realize linear reciprocating motion to adjust the air gap length δ between the two rotor disks, so as to automatically adjust the output speed n ₂ .

The invention relates to a full-voltage high-frequency direct conversion isolation type safe power supply, which comprises a high-frequency voltage transformation conversion device, a driving device and a synchronous signal generation device, and is characterized in that the high-frequency voltage transformation conversion device comprises a front-stage IGBT switch group, a high-frequency transformer and a rear-stage IGBT switch group which are connected in sequence, the input end of the front-stage IGBT switch group inputs a direct current or alternating current power supply, the rear-stage IGBT switch group outputs a direct current or alternating current power supply converted by the high-frequency transformer, the driving device comprises a signal driving module and a driving control circuit, the driving control end of the signal driving module is electrically connected with the front-stage IGBT switch group, the high-frequency transformer and the rear-stage IGBT switch group, the signal driving module is electrically connected with the driving control circuit, and the synchronous signal generation device comprises a synchronous fundamental wave circuit, a synchronous carrier wave circuit and a synchronous reduction circuit. The full-voltage high-frequency direct conversion isolation type safe power supply is used for solving the technical problems that an existing industrial frequency transformer is large in size, high in cost, low in conversion efficiency, large in loss and large in heat productivity.

The invention discloses a grabbing arm type trash remover robot hydraulic control system. A main motion structure of a trash removing robot in the system is divided into a rail moving vehicle and a grabbing arm, and the rail moving vehicle is driven by a servo motor and used for conveying the grabbing arm to a trash removing position. The grabbing arm is driven by a hydraulic system, namely, threerotary joints of a large arm, a small arm and a grab bucket. The scheme of pump control and valve control is introduced, each oil cylinder is independently provided with a hydraulic pump set, the flow of a motor rotating speed control pump is changed in the manner that a variable-frequency or servo motor drives a hydraulic pump, the control system calculates the required flow of the oil cylindersin real time according to track planning, the variable-frequency or servo motor drives the hydraulic pump to set the flow according to the flow slightly larger than the required flow, and the movement direction and speed of the hydraulic cylinder are accurately controlled through a servo proportional valve. The problem of accurate control over the hydraulic oil cylinders is solved, meanwhile, theproblems of large heating and large energy losses of a servo pump station are solved, and therefore energy saving of the system is achieved.