130results about How to "reduce power loss" patented technology

A semiconductor integrated circuit for controlling power supply which has a function of preventing a reverse current flowing in a coil under a light load condition and ensures good response of output voltage to load variation. In a synchronous rectification switching regulator having a reverse current detection circuit which can detect a reverse current flowing in an inductor (coil) and a reverse current prevention function, when a prescribed time has elapsed after detection of a reverse current based on a detection signal from the reverse current detection circuit or after the number of times of reverse current detection has reached a prescribed value, the reverse current prevention function is activated to turn Off a synchronous rectification switching device.

A semiconductor device exhibits low pressure loss and is capable of cooling a plurality of power semiconductor chips evenly. This semiconductor device includes a semiconductor module and a cooler for cooling a power semiconductor element mounted in the semiconductor module. A cooling unit of the cooler has a first header part that has a first bottom surface disposed between a coolant inlet and an end portion of a first substrate on the coolant outlet side and inclined toward a bottom plane of cooling fins so that a coolant supplied from the coolant inlet flows toward the cooling fins; and a second header part that has a second bottom surface inclined from an end portion of the bottom plane of the cooling fins on the coolant outlet side so that the coolant discharged from the cooling fins flows to the coolant outlet.

The invention relates to a mobile communication technology, and provides a control method for downlink data reception in a TDD system and a mobile communication terminal, wherein the control method is used for reducing the electric power consumption of the mobile communication terminal. In the embodiment of the invention, when a technology of repeatedly sending ACK or NACK is adopted in the TDD system, the timing duration of a HARQ RTT Timer is set as the length which is smaller than or equal to T1 and larger than or equal to T2 and is multiples of the endurance time of any single subframe, and under the condition of ensuring the reception of retransmission data which is possible to reach within the shortest time, compared with a mode of directly adopting the set timing duration of the HARQ RTT Timer when the ACK or the NACK is not repeatedly sent, the electric loss of the mobile communication terminal is saved.

An assembly structure includes a transformer, a system circuit board and an auxiliary circuit board. The transformer includes a primary winding coil, a secondary winding assembly and a magnetic core assembly. The magnetic core assembly is partially embedded within the primary winding coil and the secondary winding assembly. The secondary winding assembly has multiple output ends. The system circuit board is connected to the primary winding coil. The auxiliary circuit board is connected to the system circuit board and has multiple connecting parts. The output ends of the secondary winding assembly of the transformer are connected with corresponding connecting parts of the auxiliary circuit board.

The invention relates to a clock domain crossing controller of a digital control switch power supply and a control method thereof. The controller comprises a potential-divider network, a analog to digital converter, a digital compensator, a digital pulse modulation circuit, a drive circuit and a clock logic circuit, wherein after data at the output end of a switching power supply is acquired, a voltage control signal of the switching power supply is output through carrying out sequential processing on the data by all modules, and the clock logic circuit provides a working clock of the controller. The invention adopts a system structure of synchronous clock two-edge trigger, overcomes the data delay steady state introduced by the clock single-edge trigger, and is used for optimizing the system data processing part on the basis of maintaining the advantages of the common digital control, thereby reducing the control signal hysteresis in the system, realizing a real-time data control system, cutting off the work of the forestage module after the synchronous clock pulse is ended, and saving the system power consumption.

A transmission is described, in particular an automatic transmission for a vehicle, having at least one shift control element formed at least of a second shift control element half that can be brought into active frictional engagement with a first shift control element half. The shift control element halves can be connected to non-rotating and rotating transmission components, and a positive-locking coupling device is provided at least between the first shift control element half and the transmission components that can be connected thereto. The coupling device also comprises a synchromesh device. In addition, a method is described for controlling a transmission that has at least one shift control element and two shift control element halves which can be brought into active frictional engagement. When it is necessary to close the shift control element, the coupling device is synchronized by a synchromesh device, a positive-locking function of the coupling device is closed, and the halves of the shift control element are frictionally engaged.

The invention provides a multi-core fiber based multipath parallel optical transmission structure, comprising multiple single mode/multimode fibers and multiple multi-core fibers, wherein multiple single mode/multimode fibers and multiple multi-core fibers are alternately connected. By applying the optical transmission structure, the power loss during the optical coupling process can be reduced, and the influence of a high order mode to an optical path can be weakened.

A method is provided wherein when an auxiliary device is being powered by the PTO driveline the PTO clutch is periodically slowly ramped down in pressure until slippage is detected in the clutch. Slippage is determined by monitoring the shaft speed into the clutch as well as the shaft speed downstream of the clutch. By determining the commanded pressure where slippage occurred, the equivalent engine power that is going to the auxiliary function is calculated. With this information, the proportion of the engine load signal that is going to the auxiliary function versus the drive wheels is determined. After slip is detected in the PTO clutch, pressure is ramped back up in the clutch so as to minimize the amount of slippage.

The invention discloses a double-frequency power supply device for a ship shore power system. The double-frequency power supply device is characterized by comprising a transformer I and a transformer II, wherein the transformer I is directly connected with a 50Hz power supply of a port power grid; the output end of the transformer I is connected to a 50Hz bus; the transformer II is directly connected with the 50Hz power supply of the port power grid; the output end of the transformer II is connected with a high-voltage frequency conversion power supply; the output end of the high-voltage frequency conversion power supply is connected with a 60Hz bus; and an output of a conversion switch for conversion between the 50Hz bus and the 60Hz bus passes through an isolation transformer and is connected with a high-voltage power connection box. The double-frequency power supply device simultaneously supplies 50Hz power and 60Hz power; and when a plurality of berths are needed to be powered, different voltages can be supplied.

The invention discloses a flexible hollow cable. The cable comprises a plurality of strands of wires and an insulating outer sheath (1) which covers the wires, and is characterized in that: the wires (2) are hollowly arranged and are mutually and closely arranged; and a hollow layer which is formed after the wires are arranged is filled with a light elastic filler (3) or is supported by a spiral spring (17). The wires of the cable are hollowly arranged, so that a skin effect of alternating current is utilized, the cross section of a conductor is effectively utilized, and the alternating current resistance and the power loss are low. Meanwhile, the cable has a large external contact surface due to hollow arrangement, good heat dissipation conduction and low temperature rise and contributes to heat dissipation of a conductor material, so that the normal service life of the cable is guaranteed.

The invention relates to a charger for a cell system, the cell system comprises an input end which is used for connecting with an external voltage source, a USB transmission receiver which exchanges data with an external circuit through a first pin and a second pin in the input end and an internal voltage source, the charger comprises a detector and a controller, and the charger is characterized in that the detector is used for detecting at least one quasi-position in the first pin and the second pin for judging whether the external voltage source is a USB voltage source or not; and the controller starts the internal voltage source for providing a power supply for the USB transmission receiver when the detector judges that the external voltage source is the USB voltage source.

The invention relates to a mine ropeway detection control system for carrying out detection control on a ropeway on a mine. The mine ropeway detection control system comprises power supply modules, detection modules, monostable trigger modules, a PLC (Programmable Logic Controller) control module and an executing module, wherein each power supply module comprises an LM2576-12 voltage stabilizing chip, each detection module comprises a microwave detection module and a key detection module, the monostable trigger modules detect level changes in signals and carry out delay on the signals to control opening and closing of a relay, the PLC control module receives a relay opening and closing signal, and transmits data to the executing module after the data is analyzed and processed; and the executing module comprises a frequency converter module, an indicator lamp module and a horn alarm module, data information transmitted by the PLC control module is executed , a motor operation mode is controlled to be displayed, the detection result is ensured by using microwave detection and key detection, whether high and low levels alternatively control a relay to be opened or closed is judged rapidly through monostable trigger circuits, a plurality of detection modules automatically detect whether people take buses from a plurality of access adits to control the operation mode of a motor, and thus the energy loss is reduced.

The invention relates to a metal-based diamond grinding wheel and a manufacturing method thereof. The grinding wheel comprises a steel core and an abrasive ring, wherein the abrasive ring is preparedfrom, by mass, 35-55 percent of diamond abrasive, 40-55 percent of metal binder and 5-15 percent of auxiliary binder. The metal binder contains, by mass, 50 to 60 percent of Cu powder, 30 to 45 percent of Sn powder and 5 to 10 percent of Ti powder. A method for manufacturing the metal-based diamond grinding wheel comprises the following steps: according to the proportion of the abrasive ring, uniformly mixing the components, uniformly mixing with the auxiliary binder, drying, sieving and molding, sintering in an inert gas atmosphere, raising the temperature to the sintering temperature at a heating rate of 5-15 DEG C/min, sintering for 20-60 min, cooling to obtain an abrasive ring blank, and bonding with a steel core to obtain the metal-based diamond grinding wheel. The method is short insintering time, the prepared abrasive wheel has good thermal conductivity and large space for accommodating metal chips and abrasives in the working process, is not easy to block in the high-speed grinding process, is sharp in grinding, has high grinding accuracy, and has self-sharpness.

The invention aims at provides a service data transmission method in a sleeping mode, which comprises the following steps of: in the process of transmitting service data to a terminal by a communication network, and after a base station receives the data service, judging whether the terminal is supported to receive the service data in the sleeping mode or not; and storing the service data in a buffer memory manner under the condition that terminal is supported to receive the service data. The invention also provides a service data transmission controller in the sleeping mode, which comprises a judging module and a data buffer memory module. When the method and the device of the invention are used, the downstream service data can be normally received by a mobile terminal in a listening window in the sleeping mode on the one hand to realize the goal of reducing the power consumption, and further, the normal operation of the base station can be ensured, and the phenomena of crowding, data loss and the like can be avoided, so that the base station has higher maneuverability.

The invention discloses a hydraulic retarder with a locking device and a control oil path, which is capable of eliminating windage loss. The hydraulic retarder mainly comprises the locking device, an input half shaft which is fixedly connected with an outer ring of the locking device, a braking half shaft which is fixedly connected with an inner ring of the locking device, stators which are mounted in the input half shaft through bearings, rotors which are fixedly connected with the braking half shaft, a control oil path system which is communicated with an oil inlet passage of the locking device and oil inlets and oil outlets of the retarder stators, and a casing. When a vehicle normally runs, the locking device is separated, power cannot be transmitted to the braking half shaft from the input half shaft, and no windage loss is generated in the retarder; a hydraulic loop is controlled by closing and disconnecting the control oil path system, so that the condition whether the retarder works or not is controlled. According to the hydraulic retarder disclosed by the invention, not only the windage loss of the hydraulic retarder is eliminated, the power loss of an engine is reduced, but also the hydraulic retarder is simple in structure, stable and reliable in work and convenient to operate.

An electronic control unit of an electric power conversion system is configured to, when voltages of first and second batteries are stepped up in parallel and a temperature of a common switching element exceeds a threshold temperature, execute on time change control such that following conditions i) and ii) are satisfied: i) a trailing edge of one of the first and second PWM signals and a leading edge of the other one of the first and the second PWM signals connect with each other; and ii) the sum of the on time of the first and second PWM signals in a single PWM control period falls within a range from the single PWM control period to an allowable period. The electronic control unit is configured to change an on time of at least one of the first and second PWM signal in the on time change control.

The invention belongs to the field of communication and provides an intelligent power-saving control method and a mobile terminal. In the embodiment of the invention, firstly the current geographical location information of the mobile terminal and a current time are obtained, the mobile terminal is controlled to access the candidate modes of at least two preset operation modes matched with the current geographical location information, and then the mobile terminal is controlled to select the preset operation mode matched with the current time from the candidate modes of at least two preset operation modes according to the current time. The invention provides an intelligent power-saving control method and the mobile terminal, the mobile terminal uses different operation modes in different scenes, the electric power loss is reduced, the service life of a battery is prolonged, and the use experience of a user is improved.

The invention discloses a wheel-drive electric vehicle drive-by-wire chassis structure which comprises a chassis frame. Four single wheel assemblies are arranged at the bottom of the chassis frame andlocated at four corners of the chassis frame respectively, motor mounting plates cooperating with the single wheel assemblies are arranged at the two ends of the chassis frame respectively, and a wireless charging bearing device and a battery placing area are sequentially arranged between the two motor mounting plates. The chassis structure adopts the independent driving, braking, steering and suspension structure, electrification equipment is adopted for all, full electronic control over the chassis is achieved, the space utilization rate of the chassis is increased, and power loss is reduced.

The invention discloses a hydraulic lock with pilot one-way valve comprising a valve (1), a piston (2) and an inserting polit one-way valve. The top of one end of the valve (1) is provided with an oil port I (3), the bottom of the other end of the valve (1) is provided with an oil port II (4), and the valve (1) is provided with through holes; the inserting polit one-way valve comprises a valve cover (5), a valve sleeve (6), a main valve core (7), a main valve core spring (8), a pilot valve core (9) and a pilot valve spring (10); a through hole I (11) is provided with an annular groove (12) inside, the bottom of the pilot valve core (9) is provided with a conical structure as same as a pilot valve seat (16), the main valve core (7) is provided with a throttle small hole (18) communicating a through hole II (15) and the annular groove (12). The hydraulic lock has the advantages that structure is simple, size is small, service life is long, weight performs steady descending motions, system power consumption is small, and the system heats rarely.

The invention provides a one-step spinning machine capable of conducting entwisting clockwise and a one-step spinning method. The one-step spinning machine comprises a carding roller, a cover, a fiber feeding mechanism, a yarn winding mechanism and an air sucking device. The one-step spinning machine is characterized in that an irregular-shaped pipe formed by a conical pipe and a trapezoid pipe is arranged below the carding roller. The trapezoid pipe is formed by defining two trapezoid steel plates and two trapezoid mesh plates, and a U-shaped fiber cohesion area formed by a semi-circular-arc mesh plate is arranged at the outlet end of the trapezoid pipe so as to achieve cohesion of fiber in the irregular pipe. One side of the cohesion area is connected with a rotation flow entwisting pipe in butting mode, and the inner diameter of the rotation flow entwisting pipe and the U-shaped cohesion area form a straight smooth yarn channel. Compressed air enters along an air inlet hole of a lateral wall of the rotation flow entwisting pipe to form forward rotation flow to finish entwisting of strips and push the yarn to move forward. Fiber is fully separated, stretched, becomes parallel and is combined evenly on one device, and the one-step spinning machine is simple and compact in structure, convenient to machine and manufacture and low in cost. The one-step spinning method achieves purposes of high speed, high yield, high efficiency and high quality.

The invention relates to an optical fiber sensor network for project and equipment which needs real-time monitoring. The optical fiber sensor network at least comprises a first subnet (14) and a second subnet (15), both of which adopt subnet module. The subnet module includes a host node (1) and at least two slave nodes. The host node (1) is connected with the slave nodes (3) via a transmission branch, and sensing branch (4) is connected between adjacent slave nodes (3). The output end of the slave node in the first subnet (14) is connected with the input end of the host node in the second subnet (15). The optical sensing signal feedback end of host node in each subnet is connected with an optical switch (12), and the optical sensing signal feedback end of host node in each subnet is connected with the input end of the optical switch (12). The invention overcomes the survivability shortage of the current sensing network based on optical firber and grating.

The embodiment of the invention discloses a method and device for determining the screen-on time of an electronic device. The method includes the steps of when the electronic device reads character content to carry out display, determining a current specific scope area used for detecting the total number of characters according to a preset rule, detecting the total number of the characters in the specific scope area, computing a first time value required by reading all the characters in the specific scope range according to the detected character total number and a preset time standard value required by reading the characters, and determining the screen-on time of the electronic device according to the first time value. According to the method and device, a user is not required to repeatedly adjust the screen-on time of the electronic device, reading is guaranteed, and electric quantity losses of the electronic device are reduced.

A thin film deposition apparatus comprising gas introducer for introducing a reactive gas into the vacuum container, and plasma generator for generating a plasma of the reactive gas within the vacuum container. An insulator is deposited on the inner wall surface of the vacuum container. The gas introducer introduces a reactive gas and an inert gas into a region where a plasma is generated by the plasma generator.

A power conditioner includes a main converter to transform a voltage outputted from a power source into a first transformed voltage and output the first transformed voltage to supply power to a power using point; and an auxiliary converter to transform the first transformed voltage outputted from the main converter into a second transformed voltage and output the second transformed voltage to supply power to balance-of-plant (BOP) elements including driving devices of the power source. The main converter includes a first winding to transform the voltage outputted from the power source into the first transformed voltage and output the first transformed voltage to supply power to the power using point; and a second winding to transform the voltage outputted from the power source into a third transformed voltage and output the third transformed voltage to supply power directly to the BOP elements, thereby bypassing the auxiliary converter.

The invention provides a water surface cleaning boat and a floating object pushing device of the water surface cleaning boat. The floating object pushing device comprises a floating object pushing frame, a pushing plate, an ascending and descending mechanism and a rotation regulating mechanism, wherein the floating object pushing frame extends in the length direction of the cleaning boat, the back end part of the floating object pushing frame is rotationally arranged at a bow, the pushing plate can rotate around the front end part of the floating object pushing frame and is arranged in a way of being intersected with the horizontal plane, the ascending and descending mechanism is used for driving the front end part of the floating object pushing frame to rotate around the back end part and enables the pushing plate positioned at the front end part of the floating object pushing frame to upwards ascend or downwards descend, the rotation regulating mechanism is arranged on the floating object pushing frame and is used for pushing the pushing plate to inwards incline towards the bow, the pushing plate is a mesh plate, in addition, the pushing plate is arranged in a way of transversely extending, and the ascending and descending mechanism is arranged on a deck of the bow. The water surface cleaning boat and the floating object pushing device have the advantages that floating objects on the water surface can be gathered in a wide range, and in addition, the water entering angle of the pushing plate can be regulated according to different floating objects, so the power consumption of the cleaning boat is little, meanwhile, the pushing plate can also upwards ascend or downwards descend, the floating objects can be comprehensively gathered according to the suspension degree of the floating objects, in addition, the structure is simple, and the implementation is convenient.

The invention discloses a method and a device for controlling a processor and electronic equipment, wherein the processor at least comprises a first processor set manufactured by adopting a first manufacturing process, and a second processor set manufactured by adopting a second manufacturing process. The method comprises the steps of receiving a task load of the electronic equipment; determining an optimal use strategy of the processor under the task load, wherein the optimal use strategy is a strategy with minimal power consumption under the condition that the processor adopted for processing the task load meets the performance requirement; and processing the task load by calling the processor corresponding to the optimal use strategy in the first processor set and the second processor set, wherein the processor with two processing capabilities is included in each manufacturing process. Thus, the processor for processing the task load, which is called according to the optimal use strategy, is minimal in power consumption under the condition of meeting the performance requirement, and therefore, the power consumption loss is reduced, and resources are saved.

The invention discloses a pressure regulating system of a hydraulically driven air conditioner in a crane control room. The oil outlet of the hydraulic pump of the main engine is divided into two paths through a proportional valve, and one path is controlled by an electromagnetic system composed of a hydraulic pipeline, an overflow valve and a throttle valve. The valve is connected with the air conditioner motor, and the air conditioner motor drives the air conditioner compressor to run through the coupling, and the electromagnetic control valve is adjusted and controlled in real time by the air conditioner control unit according to the collected values ​​of the pressure sensor and temperature sensor; the other way is through the hydraulic pipeline, The swing buffer valve is connected with the swing motor. The control valve composed of overflow valve and throttle valve is connected with the control unit to protect the pressure of the air conditioner motor, automatically adjust the pressure, and realize the stable operation and normal protection and cut-off of the air conditioner system. The air conditioner motor is connected to the air conditioner compressor through a coupling, which drives the air conditioner compressor to run stably and realizes the cooling performance of the air conditioner.

The invention provides a crankshaft oil channel structure and a crankshaft and a compressor comprising the same. The crankshaft (1) comprises a crankshaft spindle (11) and a crankshaft head (12) connected with the crankshaft spindle. An oil hole (2) extending in the axis direction of the crankshaft is formed in the crankshaft spindle (11). A radial oil outlet (3) is formed in the crankshaft head in the radial direction of the crankshaft. One end of the radial oil outlet (3) communicates with the oil hole (2), and the other end of the radial oil outlet (3) is formed in the radial peripheral wall of the crankshaft head (12) so that oil can flow out of the crankshaft (1). Through the crankshaft, oil can be discharged along the radial periphery face of the crankshaft head through the radial oil outlet, the oil throttling loss caused by a bearing gap can be lowered, and thus the oil supply power loss can be lowered; and a high-pressure zone of a middle zone in the axial direction of an oil film can be reduced or broken, the pressure of the oil film connected with a bearing is reduced and is more even, and the siding resistance of the bearing in the rotation process is lowered.

Substrate-transferred, deep trench isolation silicon-on-insulator (SOI) semiconductor devices formed from bulk semiconductor wafers are disclosed. In this regard, a bulk semiconductor wafer is provided that includes a bulk body, one or more transistors formed in the bulk body, and deep trenches formed between the transistors formed in the bulk body to provide isolation between the transistors. To prevent the bulk body from electrically interconnecting the transistors, the bulk body is thinned near, at, or beyond a back side of the deep trenches formed in the bulk body to form separate bulk bodies for each transistor isolated by the deep trenches. An insulation substrate is bonded to the bulk semiconductor device to form an SOI wafer. In this manner, residual bulk bodies of the transistors in the SOI wafer are isolated between the deep trenches and the insulation substrate to reduce or avoid leakage current between transistors.

The invention provides a control method and device of a power supply total switch of a vehicle. The control method of the power supply total switch of the vehicle comprises the steps that an instruction, emitted by an external terminal, for turning off or turning on the power supply total switch is received; and the power supply total switch is turned off or turned on according to the instructionso as to cut off or feed through an external power supply circuit of a storage battery of the vehicle. According to the technical scheme, remote wireless control and automatic control of the power supply total switch of the vehicle are achieved, the possibility of lack of electricity of the storage battery of the vehicle is reduced, then the possibility that the vehicle cannot be started due to lack of electricity of the storage battery is reduced, the working efficiency is improved, in an emergency situation, the power supply total switch can further be turned off through the external terminal, supply of power of the vehicle is cut off, and safety of the vehicle is improved.