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36results about How to "Control heat" patented technology
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Method for producing detonating fuse or detonator delay line with small diameter and low charge linear density
The invention pertains to the technical field of explosive detonation and explosion propagation equipment and discloses a method for producing a detonating fuse or a detonator delay line with a small diameter and low charge linear density, which comprises the following steps: explosive is charged in an initial pipe body which is made from flexible metal and has wall thickness being one tenth to one third of the outer diameter of the pipe body; during the charge process, the charge linear density of the initial pipe body is calculated by the formula and then the explosive load is determined by a formula, namely M equals to rho1L1; during the continuous drawing process, the modular angle of a used mould is 7-35 degrees; the elongation coefficient of the pipe body in each drawing working procedure is controlled between 1.00 and 1.80; simultaneously, the linear speed of the drawn detonating fuse or the delay line pipe body is controlled within 85m per minute; and after the setting radial dimension is reached by drawing, suitable length is intercepted to obtain a finished product. The method realizes the continuous drawing production and can effectively and safely produce the detonating fuse or the detonator delay line with small diameter and low charge linear density. As the pipe body still has sufficient thickness after being drawn into a finished product, enough strength is ensured to restrict the internal explosive so that the explosive can form detonation and the product quality is effectively guaranteed.
Owner:UNIV OF SCI & TECH OF CHINA
Android system based energy-saving control method for audio power amplifier
ActiveCN103313167ASave power amplifier power-on timeReduce energy consumptionAmplifier modifications to reduce temperature/voltage variationTransducer circuitsEvent typeAudio power amplifier
The invention provides an android system based energy-saving control method for an audio power amplifier. The method includes the steps of audio play starting and audio play stopping; in the audio play starting step, type of a current audio event is judged through a kernel audio processing module, and if the current audio event is an audio starting, restoring or release pausing event, the power amplifier is powered on, otherwise the power amplifier is powered off; in the audio play stopping step, type of a current audio event is judged through the kernel audio processing module, and if the current audio event is an audio stopping, suspending or pausing event, the power amplifier is powered off, otherwise the power amplifier is powered on. The method has the advantages that energy consumption of a system is reduced, working temperature of equipment is lowered, energy consumption and working temperature of the power amplifier are reduced maximally, the power amplifier is prevented from being damaged, design of an application framework is simplified, codes can run in a kernel automatically, and intelligent control effect of the system on the power amplifier is achieved really.
Owner:XIAMEN YAXON NETWORKS CO LTD
Electronic throttle valve of engine of range-increasing type electric vehicle
PendingCN106837563AReduce heatReduce power consumptionElectrical controlMachines/enginesElectronic throttleElectric machinery
The invention relates to the field of manufacture of a range-increasing type electric vehicle and particularly relates to an electronic throttle valve of an engine of the range-increasing type electric vehicle. The electronic throttle valve comprises an air intake pipe, a valve plate, a throttle valve shaft, an electric-injection ECU (Electronic Control Unit) and a worm gear box body, wherein a worm gear seat is sheathed and fixed on the throttle valve shaft in the worm gear box body; a worm gear is arranged on the worm gear seat in a sheathing and sliding manner; vertical to the throttle valve shaft, a worm is arranged on the worm gear box body at one side of the worm gear, and a driving motor is arranged at the top end of the worm; and a displacement sensor is arranged at the end part of the worm gear box body, a displacement sensor connector is arranged at the periphery of the throttle valve shaft between a sealing end cover and the worm gear, and the side part of the displacement sensor connector is fixedly inserted with the side part of the worm gear. The electronic throttle valve has the advantages that the opening angle of the valve plate can be fed back to a central controller by the displacement sensor, and the central controller sends an instruction immediately to control rotation of a driving motor, so that the accurate real-time control of the throttle valve can be finally realized.
Owner:韩群山
Linear magnetic force activation double-piston intelligent oil extraction pump
InactiveCN101403378ASimple structureImprove energy conversion efficiencyFlexible member pumpsPump controlHorizontal wellsClosed loop
The invention discloses a linear magnetic-driving double-piston intelligent oil extraction pump, which comprises a sensor integrated short-circuited component which is positioned at the center of an underground host and connected with a plurality of groups of linear magnetic-driving components at the two ends respectively, a reciprocating piston pump assembly component which passes through the host and is axially connected, a magnetic-driving heat self-circulation radiator component, an aboveground power electronic intelligent control component and an optical cable for connecting the aboveground and the underground. The original linear magnetic-driving mechanism is adopted to directly drive an underground piston rod to drive double pistons to carry out reciprocating motion and do work, so as to change the piston cavity volume and achieve the goal of pumping the underground crude oil. The host of the oil extraction pump is internally provided with temperature, pressure, and flow rate sensors which form signal collection, transmission, calculation, detection, monitoring, control and feedback adaptive closed loop systems with the aboveground control component. As novel oil extraction equipment, the linear magnetic-driving double-piston intelligent oil extraction pump is applicable to oil extraction for oil wells with complex working condition such as oil extraction for deep wells, deep oceans, deviated wells and horizontal wells, waxy and sandy viscous oil wells and the like.
Owner:杨东平
Direct pasting uterus warming paste capable of soothing nerves and relieving pain and preparation method and application of direct pasting uterus warming paste
InactiveCN108785641AEasy to useHeating speed controlNervous disorderAntipyreticActivated carbonFlavor
The invention discloses a direct pasting uterus warming paste capable of soothing nerves and relieving pain and a preparation method and an application of the direct pasting uterus warming paste. Theuterus warming paste sequentially comprises an adhesion layer, a graphene layer, a spice layer and a heating layer, the spice layer comprises the following fillers: radix angelicae, cinnamon, folium artemisiae argyi, rhizoma zingiberis, fennel, clove, fructus amomi, and agilawood; the heating layer comprises the following fillers: an iron powder, water, activated carbon, vermiculite, a water-absorbent resin, sodium chloride and ultra-low sulfur expandable graphite. The direct pasting uterus warming paste is a type of drug for external use for the healthcare of women, can be directly pasted onthe skin of the woman, is used directly, has obvious effects, and therefore has the effects of relieving exterior syndrome and dispelling cold, soothing nerves, tranquilizing, promoting qi circulationand relieving pain, and is more favorable for alleviating the dysmenorrhea symptoms of women.
Owner:WANNAN MEDICAL COLLEGE
Elevator door motor switch-in-place torque control method and elevator door motor device
ActiveCN102324890AControl heatSimple structureElectronic commutation motor controlAC motor controlControl vectorLoop control
The invention discloses an elevator door motor switch-in-place torque control method which comprises the following steps: calculating the synchronization frequency f of a motor and integrating the synchronization frequency f to obtain a coordinate conversion angle theta; calculating an M-axis voltage Um corresponding to an expected torque under an M-T rotating coordinate system; calculating a T-axis voltage Ut corresponding to the expected torque under the M-T rotating coordinate system; performing PARK inverse transform according to the T-axis voltage Ut, the M-axis voltage Um and the coordinate conversion angle theta so as to obtain a voltage under a two-phase static coordinate; performing space vector pulse duration modulation on the voltage under the two-phase static coordinate so as to obtain 6 paths of driving signals; and outputting the 6 paths of driving signals to the motor after passing through an intelligent power module, thus obtaining the expected torque. The torque control method provided by the invention can be used for adjusting the motor torque randomly as required, therefore the method can be used for controlling the heating value of the motor during door motor switch-off maintaining and door motor switching-on maintaining; and in addition, because of open-loop control, coders for vector control are not required, thus the device provided by the invention is simple in structure.
Owner:SHENZHEN HPMONT TECH
Overheat protection type lithium battery
InactiveCN111916649AReduce capacitySmall currentLi-accumulatorsCell component detailsHemt circuitsStructural engineering
The invention discloses an overheating protection type lithium battery, and the lithium battery comprises a shell and an inner core arranged in the shell; a negative plate and a positive column are inserted into the two ends of the inner core respectively, a control cavity is formed in the shell, an external column is inserted into the side wall of the control cavity in a penetrating mode, and a dripping box is fixed to the inner wall of the control cavity; the inner top of the dripping box is connected with a push plate through an extrusion spring, and a power connection rod penetrating through the top of the dripping box is fixed to the upper end of the push plate. The device has the advantages that the two power connection sheets are communicated through mercury, so mercury is connectedinto the whole power supply circuit, and when the device is heated, dichloromethane expands to cause the push plate to extrude the mercury, so the capacity of the mercury connected into the circuit is reduced, the overall current passing rate is reduced, and the electrifying current of the whole circuit is reduced; therefore, the heat productivity of the battery is controlled, self redeeming is effectively completed, and overheating damage to the battery is avoided.
Owner:王从艳
Control device for hybrid vehicle power transmitting apparatus
InactiveCN101348072AIncrease temperatureHigh calorific valueHybrid vehiclesGearingHybrid vehicleHeat generation
Owner:TOYOTA JIDOSHA KK
Cable and feed body connecting method suitable for deep well type grounding electrode
InactiveCN110086062ASolve technical problems of protection failureAvoid influenceDustproof/splashproof/drip-proof/waterproof/flameproof connectionConnection contact member materialEpoxyElectrochemical response
The invention discloses a cable and feed body connecting method suitable for a deep well type grounding electrode. The method comprises that feed points in a feed body of the grounding electrode are connected with a cable; each feed point is welded to the feed body and the cable via a metal holt hoop iron member; each holt hoop iron member tightly sleeves the feed point of the feed body; the holthoop iron member comprises a first side surface hole and a cable welding hole; the first side surface hole is welded to the feed body, and the cable welding hole is welded to the cable; lead is castedto wrap conductors on all feed connecting points, so that a lead sealing layer is formed in the surface of the metal holt hoop iron members and the feed points; and epoxy resin is poured on the surface of the lead sealing layer to carry out packaging, and an epoxy resin layer is formed for protection. The cable is welded to the feed body via the metal holt hoop iron members, the lead sealing layer and epoxy resin are added for packaging, and on the premise that the connecting reliability is ensured, welding points are avoided from influence by an electrode corroded product and direct participation in electrochemical reaction, and protection is realized.
Owner:CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
Reflection-type LED (Light Emitting Diode) light source system in near-infrared noninvasive blood constituent detector
InactiveCN105276450ASimple structureLow number of surfacesSemiconductor devices for light sourcesRefractorsLight sourceConcave surface
The invention discloses a reflection-type LED (Light Emitting Diode) light source system in a near-infrared noninvasive blood constituent detector and belongs to the field of optical design. The system comprises at least one LED light source, an annular circuit board, a concave reflecting mirror and a light pass hole, wherein LEDs are mounted on the annular circuit board in an equivalent interval; the annular circuit board, the concave reflecting mirror and the light pass hole are coaxially arranged; and light rays emitted by the LED light source irradiate the concave reflecting mirror, converged by the concave reflecting mirror and then pass through the hollow part of the annular circuit board to form a light spot via the light pass hole. Compared with the structure of the traditional light source system, the light source system has the advantages that the structure is obvious and concise; the number of optical elements is small; the illumination uniformity is improved while the optical energy loss is reduced; the calorific value of a light source is effectively controlled; the detection precision and stability of the near-infrared noninvasive blood constituent detector are improved; and the market of a novel portable noninvasive blood constituent detector is favorably opened.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Capacitor constant-power aging circuit and aging method
PendingCN111599596AImprove qualityExtended service lifeBatteries circuit arrangementsElectric powerConstant powerHemt circuits
The invention provides a capacitor constant-power aging circuit and an aging method thereof, which are used for an aluminum electrolytic capacitor constant-power aging device. The circuit comprise a charging power supply output end, a capacitor Cx to be aged, a transistor Q1 and an operational amplifier U1, in addition, a reference voltage REF is also connected to the positive input end of the operational amplifier; the output end of the charging power supply, the capacitor Cx, the transistor Q1 and the resistor R1 form a charging loop, and the resistor R1 is grounded; meanwhile, the input endof the operational amplifier U1 is connected with a feedback circuit and a reverse adder to form a constant current source. The charging current of the capacitor to be aged is dynamically adjusted according to the voltage loaded on the capacitor, so that the charging current is relatively large when the voltage is low, the charging current is automatically reduced along with the rise of the voltage, the heating value of the capacitor during aging is controlled, and electrolyte evaporation caused by over-high temperature is prevented. The quality of the capacitor can be greatly improved, and the service life of the capacitor is prolonged.
Owner:SHENZHEN ZHONGNENGDA AUTOMATION EQUIP CO LTD
Multi-wire sawing machine spindle system
InactiveCN104647620AControl heatImprove stabilityFine working devicesEngineeringMechanical engineering
The invention relates to a multi-wire cutter, in particular to a multi-wire sawing machine spindle system used for cooling circulating. The multi-wire sawing machine spindle system is characterized in that a front bearing is arranged at the front end of a spindle, a front bush is arranged between the front bearing and spindle, the outer circle of the front bearing is arranged on a front bearing pedestal, two groups of main bearings are arranged at the middle of the spindle, the two groups of main bearings are divided by an inner bush, the outer circles of the main bearings are arranged on a main board bearing pedestal, the front end is pressed by a pressure cover, the rear part is provided with a synchronous belt wheel and a rear bearing, a rear spacer bush is arranged between the rear bearing and synchronous belt wheel, a rear cover is arranged at the rear head face of the spindle, the outer circle of a rear bearing is arranged on a rear bearing pedestal, an oil pipe plug is arranged at the front end of the spindle, and an oil cooling pipe and a rotary joint are arranged at the rear end. Through improving the structure of the multi-wire sawing machine spindle part, the heat value of the spindle is effectively reduced, the service life of each bearing of the spindle is prolonged, and the equipment stability is improved.
Owner:YANTAI LIKAI ELECTRONICS TECH
Welding machine with wire feeding and wire drawing being conducted alternately and power supply control method thereof
The invention discloses a welding machine with wire feeding and wire drawing being conducted alternately and a power supply control method thereof, and belongs to the field of welding machine control systems. The problems that as for an existing gas-shielded electric welding machine, sheets cannot be welded easily and splashing is serious are solved. The power supply control method of the welding machine includes an arcing stage, a short-circuit stage and a drawing stage. At the arcing stage, a constant voltage control mode or a constant current control mode is adopted, and welding wires are fed in at a constant speed. At the short-circuit stage, the welding wires make contact with workpieces, the constant current control mode is adopted, and wire feeding is stopped. At the drawing stage, the constant current control mode or the constant voltage control mode is adopted for controlling the heating amplitude of the workpieces, and the welding wires are drawn at a constant speed. The welding wires are reset to the arcing stage after the drawing stage is completed. According to the welding machine with wire feeding and wire drawing being conducted alternately and the power supply control method thereof, different control mode circuits are used in different welding stages, and a wire feeder rotates forwardly or reversely in an associated mode for wire feeding or wire drawing, so that the effects of reducing arc heat, being capable of welding the sheets and reducing splashing are achieved.
Owner:南京东斯达机电科技有限公司
Plunger pair lubricating and cooling structure for swash plate type plunger pump
InactiveCN105134583AImprove the lubrication effectControl heatPositive displacement pump componentsLiquid fuel engine componentsComing outReciprocating motion
The invention relates to a plunger pair lubricating and cooling structure for a swash plate type plunger pump. A plurality of plunger holes are formed in a cylinder body, an axial cooling oil duct is formed beside each plunger hole in the axial direction of the plunger hole, radial cooling oil ducts are formed in the peripheral surface of the cylinder body in the radial direction of each plunger hole to make the axial cooling oil ducts communicated with the peripheral surface of the cylinder body, the plunger holes and plungers are both of stepped structures, and each stepped structure is composed of two parts with different diameters; when each plunger reciprocates in the corresponding plunger hole, an annular cavity is formed between the plunger which is of the stepped structure and the plunger hole which is of the stepped structure, and the annular cavity is communicated with the corresponding axial cooling oil duct through a plunger pair through-flow oil duct formed in the radial direction of the plunger hole; when the cylinder body rotates at a high speed, the change of the size of each annular cavity enables oil in the corresponding axial cooling oil duct to enter and come out of the annular cavity periodically, and in this way, a plunger pair is lubricated and cooled and the updating rate of oil in the axial cooling oil ducts and cooling effect are improved.
Owner:FUZHOU UNIV
Preparation method of infant rice flour with functions of quick solubility and easy digestion
The invention discloses a preparation method of infant rice flour with functions of quick solubility and easy digestion. The method comprises the following steps: firstly, grinding and sieving raw material rice, pulping the rice with water, performing dissolving and uniformly mixing to prepare rice milk with the mass percent concentration of rice flour in the mixture being 15-20%, and then passing the rice milk twice through a colloid mill to obtain milled milk; then, adding high-temperature-resistant alpha-amylase and an enzyme activity accelerant into the milled milk, performing enzymolysis for 30-60 minutes at the temperature of 80-90 DEG C, detecting the DE value after enzymolysis, and performing enzyme deactivation to obtain enzymatic hydrolysate; thirdly, performing spray drying on the enzymatic hydrolysate for 5-10 seconds at the air inlet temperature at 170-180DEG C and the air outlet temperature at 90-95DEG C to obtain the product infant rice flour; and finally, detecting the DE value, the water solubility index WSI and the in-vitro digestion performance of the infant rice flour. According to the prepared infant rice flour, the palatability, the brewing performance and the digestion and absorption performance of the infant rice flour can be effectively improved.
Owner:INST OF APPLIED CHEM JIANGXI ACAD OF SCI
Intelligent anti-freezing system and method applied to air cooling island
PendingCN111442659ARealize intelligent identificationRealize automatic adjustmentSteam/vapor condensersInfraredControl system
The invention discloses an intelligent anti-freezing system and method applied to an air cooling island. The intelligent anti-freezing system comprises a upstream area anti-freezing device, a downstream area anti-freezing device, an intelligent anti-freezing control system and an infrared thermal imager used for detecting the heat exchange condition of finned tubes on the two sides of a cooling unit; the infrared thermal imager is connected with the intelligent anti-freezing control system, and the intelligent anti-freezing control system is connected with the upstream area anti-freezing device and the downstream area anti-freezing device. According to the intelligent anti-freezing system, an air cooling finned tube is divided into the high freezing risk area, the medium freezing risk areaand the low freezing risk area, the partition anti-freezing strategy is adopted, and the problem that in the prior art, the anti-freezing effect of the downstream area and the anti-freezing effect ofthe upstream area are inconsistent is solved. An intelligent anti-freezing control system is adopted, the unfolding length of the anti-freezing electric heating heat preservation curtain and the heating value of an electric heating belt in the anti-freezing electric heating heat preservation curtain are finely controlled, the temperature of condensed water in the air cooling finned tube is kept above the freezing temperature, and the optimized anti-freezing effect is achieved.
Owner:XIAN THERMAL POWER RES INST CO LTD
VR resource hardware adaptation method
ActiveCN112684873BIndirect frequency changeReduce or increase image qualityInput/output for user-computer interactionDigital data processing detailsComputer hardwareSimulation
The present invention proposes a VR resource hardware adaptation method, comprising the following steps: step a: integrating several VR helmet interfaces into a unified VR interface; step b: collecting test data of the several VR helmets, and according to the test data A temperature prediction model is established, and the temperature trend of the processor of the VR helmet is predicted by the temperature prediction model; step c: according to the screen characteristics of the several VR helmets, the images output by the screen of the VR helmet are processed Amendment; Step d: collect the controller orientation data during the VR experience process, and filter the orientation data; the method of the present invention can be deployed to any VR helmet through one-time VR resource development, greatly reducing developer testing and adaptation Reduce the workload of VR helmets, speed up the development of VR resources, and improve the quality of VR experimental resources.
Owner:北京润尼尔科技股份有限公司
Direct-current electric heating marshmallow maker
Heating manners of existing marshmallow makers include gas heating and electric heating. If the marshmallow is heated with open fire, certain potential safety hazard exists in making of marshmallow, and in making, temperature is hard to control, and therefore, the quality of the marshmallow is hard to ensure. The invention provides the direct-current electric heating marshmallow maker which comprises a rack, a direct-current motor, a rotating shaft, a rotating shaft fixing device, a marshmallow discharge device and a storage battery, wherein the storage battery is electrically connected with the direct-current motor; the rotating shaft is arranged on the rotating shaft fixing device by a bearing, one end of the rotating shaft is connected with the direct-current motor by belt driving, and the other end of the rotating shaft is provided with the marshmallow discharge device; and the marshmallow discharge device comprises a heater and a holding disk, the heater is electrically connected with an electric brush, the storage battery is electrically connected with the electric brush, and a temperature regulation switch is arranged.
Owner:黄昌友
VR resource hardware adaptation method
ActiveCN112684873AIndirect frequency changeReduce or increase image qualityInput/output for user-computer interactionDigital data processing detailsComputer hardwareComputer engineering
The invention provides a VR resource hardware adaptation method. The VR resource hardware adaptation method comprises the following steps: step a, integrating a plurality of VR helmet interfaces into a unified VR interface; b, collecting test data of the VR helmets, establishing a temperature prediction model according to the test data, and predicting the temperature trend of processors of the VR helmets through the temperature prediction model; c, correcting an image output by the screen of the VR helmet according to the screen characteristics of the plurality of VR helmets; d, acquiring controller azimuth data in the VR experience process, and filtering the azimuth data; according to the method, through one-time VR resource development, any VR helmet can be deployed, the workload of a developer for testing and adapting to the VR helmet is greatly reduced, the VR resource development speed is increased, and the VR experiment resource quality is improved.
Owner:北京润尼尔网络科技有限公司
Energy-saving charger based on synchronous rectification technology
PendingCN110994970AReasonable structureStable structureEfficient power electronics conversionAc-dc conversionFull bridgeHemt circuits
The invention relates to an energy-saving charger based on a synchronous rectification technology, which is used for device charging. An alternating current power supply in a PFC circuit 1 is rectified and then input to a primary side of an alternating transformer, a chip U1 outputs two paths of interleaved working signals to control a field effect transistor to output a stable 385V power supply to the power supply input end of an inverter circuit 4, a driving circuit 2 outputs four paths of inversion signals to the inversion signal input end of the inverter circuit 4, so that the field effecttransistor controls the two driving transformers to work primarily, the two driving transformers work to drive four MOS transistors of a full bridge, and the main transformer secondary outputs the inversion power supply to the power supply input end of a synchronous rectification circuit 3; the driving circuit 2 outputs two paths of synchronous drive signals to the synchronous signal input end ofthe synchronous rectification circuit 3, and rectifies and outputs two groups of secondary sides of the transformer through the field effect transistor. The energy-saving charger has the advantages of the reasonable and stable structure and the long service life, can continuously work for a long time, and can effectively control the heat productivity of the whole machine.
Owner:中山市鹰飞电器有限公司
Barbecue machine
InactiveCN106037510AImprove energy utilizationReduce energy lossRoasters/grillsPotentiometerReflectivity
Owner:陈言龙
Heat treatment method and heat treatment device
InactiveCN100477086CControl heatSemiconductor/solid-state device manufacturingEngineeringThermocouple
A heat treatment method comprising a step of accommodating a holder with a plurality of works placed in multiple stage in the vertical direction in a treatment vessel and a step of performing a predetermined heat treatment by performing heating by a heating means. A specific target amount of heat generated by the heating means for performing the heat treatment of the works is determined in advance. A heat treatment device has the heat treatment vessel and a control temperature and a correction temperature sensor which are provided in the heat treatment vessel. The correction temperature sensor comprises a protective pipe body part extending in the vertical direction and a plurality of branch pipe parts extending in the horizontal direction from the protective pipe body part. A thermocouple is disposed on each branch pipe part, and the branch pipe parts are inserted between the works in height positions different from each other.
Owner:TOKYO ELECTRON LTD
A kind of sewing machine with new automatic presser foot lifting structure
The invention belongs to the technical field of sewing equipment and particularly relates to a sewing machine with a novel automatic pressing foot lifting structure. The sewing machine comprises an automatic pressing foot lifting device, an outer frame of a pressing foot electromagnet of the automatic pressing foot lifting device is provided with a maintaining device, and the maintaining device abuts against the outer wall of a pressing foot electromagnet core when the pressing foot electromagnet core extends out. The maintaining device is clamped on the end face of the pressing foot electromagnet core when the pressing foot electromagnet core is sucked. Through joint matching of the maintaining device and an auxiliary mechanism, on the premise of keeping the process time unchanged, force lost due to current decrease is supplemented, an electrified current is reduced, the heating quantity is effectively controlled, the temperature is reduced, and it is guarantee that a pressing foot electromagnet finishes pressing foot lifting motion normally.
Owner:JACK SEWING MASCH CO LTD
Mining explosion-proof mobile substation
InactiveCN112448303AControl heatImprove cooling effectDistribution substationsTransformerVacuum switch
The invention belongs to the technical field of substations, and particularly relates to a mining explosion-proof mobile substation, which comprises a mining explosion-proof high-voltage vacuum switch, and is characterized in that a high-voltage sleeve is fixedly arranged at the right end of the mining explosion-proof high-voltage vacuum switch; the mining explosion-proof high-voltage vacuum switch is fixedly connected with a high-voltage bushing through a first bolt, an elastic pad and a gasket, a wire holder assembly is fixedly arranged on the front side wall of the high-voltage bushing, a word plate is fixedly arranged at the lower end of the wire holder assembly through a copper rivet, and a box is fixedly arranged at the right end of the high-voltage bushing. A box cover is fixedly arranged at the upper end of the box, the heat productivity of the mining explosion-proof dry-type transformer is effectively improved, the output power of the transformer is increased, and the situation that the service life of the transformer is affected due to the fact that the interior of the transformer is at a high temperature for a long time is prevented.
Owner:盐城威达变压器制造有限公司
Energy-saving control method of audio power amplifier based on android system
ActiveCN103313167BSave power amplifier power-on timeReduce energy consumptionAmplifier modifications to reduce temperature/voltage variationTransducer circuitsEvent typeAudio power amplifier
The present invention provides an audio power amplifier energy-saving control method based on an android system, including an audio start playback step and an audio stop playback step. In the audio start playback step, the current audio event type is judged by a kernel audio processing module. If the audio starts or stops, recovery Or suspend the release event, then open the power amplifier, otherwise turn off the power supply of the power amplifier, judge the current audio event type by the kernel audio processing module in the audio stop playing step, if it is an audio stop or hang or pause event, then turn off the power amplifier power, otherwise turn on the power of the power amplifier. The present invention has the following advantages: saving system energy consumption, reducing the operating temperature of the device, maximizing the reduction of power consumption and operating temperature of the power amplifier, preventing damage to the power amplifier, simplifying the design of the application program framework and realizing the automatic operation of the code in the kernel , so that the system truly achieves the effect of intelligent control of the power amplifier.
Owner:XIAMEN YAXON NETWORKS CO LTD
Elevator door motor switch-in-place torque control method and elevator door motor device
ActiveCN102324890BControl heatSimple structureElectronic commutation motor controlAC motor controlLoop controlControl vector
The invention discloses an elevator door motor switch-in-place torque control method which comprises the following steps: calculating the synchronization frequency f of a motor and integrating the synchronization frequency f to obtain a coordinate conversion angle theta; calculating an M-axis voltage Um corresponding to an expected torque under an M-T rotating coordinate system; calculating a T-axis voltage Ut corresponding to the expected torque under the M-T rotating coordinate system; performing PARK inverse transform according to the T-axis voltage Ut, the M-axis voltage Um and the coordinate conversion angle theta so as to obtain a voltage under a two-phase static coordinate; performing space vector pulse duration modulation on the voltage under the two-phase static coordinate so as to obtain 6 paths of driving signals; and outputting the 6 paths of driving signals to the motor after passing through an intelligent power module, thus obtaining the expected torque. The torque control method provided by the invention can be used for adjusting the motor torque randomly as required, therefore the method can be used for controlling the heating value of the motor during door motor switch-off maintaining and door motor switching-on maintaining; and in addition, because of open-loop control, coders for vector control are not required, thus the device provided by the invention is simple in structure.
Owner:SHENZHEN HPMONT TECH
Vehicular wireless communication device
ActiveCN113475001AControl heatWell managed temperatureDigital data processing detailsParticular environment based servicesCommunication deviceRadio wave
An aspect of the present disclosure provides a vehicular wireless communication device (1) which is mounted on a vehicle and performs communication with the outside of the vehicle. The vehicular wireless communication device (1) is provided with: a radio wave transmitting unit (33) having the function to transmit radio waves; a radio wave reception unit (33) having the function to receive radio waves; a positioning unit (34) having the function to perform positioning; a temperature acquiring unit (S110) configured to acquire the temperature of the vehicular wireless communication device; and a function control unit (S130, S240) configured to suppress or resume a plurality of functions among the function to transmit radio waves, the function to receive radio waves, and the function to perform positioning, in response to the temperature.
Owner:DENSO CORP
A lithium-ion battery pack
ActiveCN104600236BImprove connection strengthReduce contact resistance valueSmall-sized cells cases/jacketsBattery isolationWire rodHemt circuits
Owner:JIADE ENERGY TECH (ZHUHAI) CO LTD
Power lithium battery pack charging management circuit
InactiveCN106877414AImprove charging capacityExtended service lifeCharge equalisation circuitElectric powerCharge currentEngineering
A charge management circuit for a power lithium battery pack is composed of a boost circuit, a voltage monitoring circuit, and a shunt control circuit. The charger adopts the design of energy-saving shunt method, adding a bypass resistor to each battery. When a single battery is higher than other batteries in the group, all or part of the charging current is introduced into the bypass resistor, so as to realize the charging of each cell. The balanced charging of the whole battery, the circuit structure is relatively compact, and the energy-saving file battery pack equalization charger designed by the shunt method solves the problem of unbalanced charging of the battery pack, effectively prevents overcharging, and improves the use of the file battery. Safety, increases the charging capacity of the battery pack, prolongs the service life of the lithium battery pack, controls the heat generation, and ensures the long-term stable operation of the charger.
Owner:范洪国
False twist processing machine
ActiveCN105401281AReduce in quantityIndependent control of heat generationTextiles and paperYarnElectrical and Electronics engineering
The invention discloses a false twist processing machine, and the machine enables different types of yarns to be heated to a proper twisting temperature. A storage space (31a) of a box body (31) stores two first heating devices (32a) and two second heating devices (32b). Each of the heating devices (32a, 32b) is provided with a heating block (35) and a heating part (36) for heating the heating block (35). The first heating device (32a) and the second heating device (32b) are alternately arranged in the direction of the long side of a machine body. The second heating device (32b) are arranged to be higher than the first heating device (32a). Therefore, the heating blocks (35) of the first heating device (32a) and the heating blocks (35) of the second heating device (32b) are not overlapped while being observed in the direction of long side of the machine body.
Owner:TMT MACHINERY INC
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