39results about How to "Reduce power supply time" patented technology

The invention discloses a disaster area power grid state monitoring method. Through a monitoring device at a power grind on-line monitoring end, power grid equipment state parameters are collected, an intelligent processor of the power grind on-line monitoring end processes monitoring data and obtains the damage situation of power grid key equipment, and the damage situation of the power grid key equipment, position information and time information are reported to a power grid monitoring center in real time through a plough short message communication system. Quick and effective monitoring of the power grid state in a disaster area after natural disasters happen can be achieved, the time for disaster area power recovering can be greatly shortened, and economic loss and casualties caused by the natural disasters can be well reduced.

The invention relates to an electric furnace burden process with high efficiency and low cost. Main raw materials are molten iron accounting for 30-60 percent of metal adding amount, excellent scrap steel accounting for 5-10 percent of metal adding amount and low-lost scrap steel accounting for 30-35 percent of metal adding amount; auxiliary materials are lime and soft burning dolomite, wherein 3.0-3.5 percent of lime and 1.0-1.5 percent of soft burning dolomite are respectively added in each ton of molten steel; and through optimizing electric furnace slag discharge operation, using an oxygenlance and adopting power supply oxygen blowing control and other smelting processes, the electric furnace burden process greatly improves simultaneous hit rate of terminal point components and the temperature of an electric arc furnace, realizes the aims of improving the quality of the molten steel, shortening the smelting period and reducing the consumption and significantly reduces the full oxygen content of steel products at the same time. The electric furnace burden process has good application prospect for ensuring the quality of steel and reducing the production cost.

A heater control unit controls electric power supplied to a heater provided in a seat. The heater control unit includes an outside air temperature measuring portion that measures an outside air temperature, a seat surface temperature measuring portion that measures a surface temperature of the seat, and a control portion. The control portion controls a time for which an initial electric power larger than an electric power in a steady state after the initial state is output to the heater, according to the measured outside air temperature and the measured seat surface temperature in an initial state immediately after the heater is activated.

The invention provides an energy-saving power supply device for an automobile. The energy-saving power supply device comprises an automotive generator, a generator controller and a main battery, wherein the generator controller detects the voltage level state of the main battery, automatically controls the automotive generator to charge the main battery when the voltage of the main battery is in a low state, and controls the automotive generator to unload when the power of the main battery is full, so that fuel is saved, the overcharge of the main battery is avoided, and the life of the battery is prolonged. The energy-saving power supply device is additionally provided with a standby power supply, and then, an auxiliary battery can be used for supplying power to start up the automobile when the power of the main battery is used up because an automobile user forgets to turn off headlights or overuses electrical equipment on the automobile without starting up an engine. Moreover, the energy-saving power supply device is provided with a solar charging assembly which is connected with the main battery and is used for charging the main battery, so that the main battery can be kept in a full-power state; and the power supplying time of the automotive generator is reduced by using the solar energy for power supply, so that the unload time of the automotive generator can be longer, the thrust to the generator caused by the engine is reduced, and the fuel consumption is saved.

The invention relates to a system and method for regulating advertising lighting based on railway tunnel piston wind, the system comprises a power supply module, a weak current control module, a strong current circuit module and a wind pressure sensor, and the strong current circuit module comprises advertising lighting equipment; the power supply module comprises a wind power generation device, an AC-DC converting circuit and a storage battery, and the storage battery supplies power to the wind pressure sensor and the weak current control module; the wind pressure sensor is connected with the weak current control module so as to convert a wind pressure signal generated by the piston wind to an electrical signal and transmit to the weak current control module; the weak current control module is connected with the strong current circuit module, and the weak current control module controls on/off of the strong current circuit module according to the received electrical signal of the wind pressure sensor. According to the invention, ineffective power supply of the advertising lighting equipment can be greatly reduced through the piston wind generated in the tunnel, a practical test shows that about 90% power supply time of the advertising lighting equipment can be reduced, and the power supply can be greatly saved.

To prevent an increase in the temperature of an X-ray detector while avoiding an increase in the size of the X-ray detector resulting from a cooling unit being attached thereto, provided is an X-ray diagnostic system which has an X-ray irradiation means for applying X-rays; an X-ray detector for detecting X-rays having passed through a subject to output image data; and a controller for controlling the X-ray irradiation means and the X-ray detector. The X-ray diagnostic system is adapted to include an exposure preparation state detection means for detecting the state of exposure preparation for taking an X-ray radiograph of the subject; and a power switching section for turning on a power supply for the X-ray detector or turning off the activated power supply in response to a detected result provided by the exposure preparation state detection means.

The invention relates to a face identification based mobile payment device with a split-screen display function, which comprises a main body, a driving pipe, a camera and two watch straps. A display mechanism and a power supply mechanism are arranged in a notch; the display mechanism comprises a telescopic component, a connection plate, a first display screen and two display components; the telescopic component comprises a fixed block, a moving block, a telescopic unit, a telescopic frame, a sliding rod and a sliding ring; each display component comprises a hinging unit, a second display screen and a direction regulation unit; and the power supply mechanism comprises a storage battery, a conducting rod and two conducting components. According to the face identification based mobile paymentdevice with the split-screen display function, the second display screen is rotated to a position in parallel to the first display screen by the display mechanism so as to enlarge a display area andfacilitate scanning payment of a code scanner, but not only that, electric energy for equipment operation is provided by utilizing the power supply mechanism when equipment carries out payment, so asto greatly reduce power supply time of the storage battery, thereby reinforcing endurance of the equipment.

The invention discloses a transmission line malfunction monitoring auxiliary device, comprising an electrical signal acquisition circuit, a phase conversion circuit, an alternating-direct current conversion circuit and a comparison output circuit which are electrically connected in sequence, wherein the electrical signal acquisition circuit is used for collecting a secondary phase current and a secondary phase voltage; the phase conversion circuit is used for performing phase conversion on the collected secondary phase current to obtain a first voltage vector U after phase conversion, and performing reduction voltage on the collected corresponding secondary phase voltage to obtain a second voltage vector U' after reduction voltage; the alternating-direct current conversion circuit is used for performing rectification on a vector U+U' and a vector U-U' to respectively obtain a first direct current voltage U2 and a second direct current voltage U3; the comparison output circuit is used for comparing the first direct current voltage U2 and the second direct current voltage U3, and outputting an electric signal to an external monitoring terminal according to a comparative result. On basis of the original protection device, according to the scheme, the time for recovering the power supply of regions without malfunction is effectively shortened, and the malfunction scope is effectively shrunk.

The invention discloses an electromagnetic inertial energy power machine. The electromagnetic inertial energy power machine comprises a flywheel (1), a hollow fixed shaft (2), an inner stator (3), a rotor (4) and an outer rotor (5), wherein a magnetic isolator (6) is arranged on the hollow fixed shaft (2); an axial inner fixed magnetic ring (61) is arranged at the outer end surface of the magneticisolator (6); an axial inner moving magnetic ring (42) is arranged at the inner wall of a rotor end cover (41) of the rotor (4) and corresponds to the axial inner fixed magnetic ring (61); the polarities of the corresponding surfaces of the axial inner fixed magnetic ring (61) and the axial inner moving magnetic ring (42) are the same; the axial distance of a magnetic ring air gap (71) between the axial inner fixed magnetic ring (61) and the axial inner moving magnetic ring (42) is gradually increased along the rotation direction of the rotor (4). The electromagnetic inertial energy power machine has the advantage that by adopting the special structure that the air gap at the back end of a magnetic field is smaller than the air gap at the front end, the dynamic magnetic repulsion force atthe back end is greater than the dynamic magnetic repulsion force at the front end along the rotation direction, so as to maintain and accelerate the rotation of the rotor.

The invention relates to a complementary method for handling a fault in a distribution network based on dual cable power supply. An analysis is conducted for a dual cable power supply distribution network to obtain a solving strategy for differential fault handling. To ensure, as for dual cable power supply, the dual power supply property of users after non-fault recovery is to avoid failure in fault positioning of a distribution network due to false alarm phenomena of dual cable faults, to shield false alarm signals that cannot be confirmed by expanding the scope of isolation and to include a faulty region in the scope of isolation. The invention considers the adaptability of fault handling functions of the dual cable power supply distribution network at this stage, the impact of the trend for special operating modes on a general fault handling logic algorithm, and the general fault handling logic flaws, and ensures wide adaptability and practicability of fault handling of the distribution network, thereby improving the fault handling reliability of the distribution network, shortening the power supply time and providing customer satisfaction.

The invention discloses a 110 kV voltage class pentagonal wiring hydropower station black-start test system and method, wherein the110 kV system is of a pentagonal wiring structure; after power loss of a sending-out line is simulated, a 400V factory bus power supply incoming line switch of a black-start test unit is disconnected, a standby power supply automatic switching system automatically switches on an interconnection switch, the 400V factory bus power supply of the black-start test unit recovers power supply, a diesel generating set is started, voltage is built to rated voltage, the 400Vinterconnection switch is disconnected, and the diesel generator supplies power to recover the plant load of the black-start test unit. A hydraulic turbine set is started, the generator with a main transformer is boosted to rated voltage from zero, an outlet switch of the diesel generator is switched off, a station service power supply switch is switched on, self power supply of the hydraulic turbine generator is recovered by a 400V station service bus power supply, a network switch is combined, power supply of a power transmission line is recovered, and connection to other lines in a grid-connected manner in the same period is realized; the safety of the black-start test of the hydropower station is improved, and the novel black-start test system and method are provided.

The invention relates to an energy-saving parking space indication method in the field of road traffic and intelligent traffic. According to the energy-saving parking space indication method, a devicecomprises a red light position electromagnet, a green light position electromagnet, a rack with a limiting notch, a reflective ball with a reflective film and a coaxial gear, a pin and the like, wherein red and green reflective films are respectively adhered to two hemisphere regions on the surface of the reflective ball. When an idle state of the parking space is changed, an external parking space detection system energizes the traffic light electromagnet to attract the rack to move, drives the reflective ball and the coaxial gear to rotate, drives the reflective ball to rotate synchronously, enables the hemispherical surface with the reflective film in the corresponding color to face vehicles coming and going, generates reflection by means of garage illumination and illumination of headlamp light of the vehicles coming and going, and shows different colors to indicate whether the parking space is idle or not. Compared with an existing parking space indicating method adopting continuous power supply, power supply is not needed in most of the whole day, the parking space state is indicated through passive light reflection of ambient light, the electromagnet is energized only at the moment when a vehicle enters and exits the parking space, the reflective ball is triggered to rotate to change display, and electric energy loss can be greatly reduced.

The invention provides an underwater glider course angle robust adaptive control method based on an event trigger strategy, which is characterized in that a roll angle is regarded as virtual control, a differential rudder angle is regarded as actual control input, and a controller is designed based on a fourth-order nonlinear model and a backstepping method. Firstly, an underwater glider course angle tracking error is calculated, and a virtual control law of a roll angle is designed; secondly, a roll angle tracking error is calculated based on the virtual control law and the current underwater glider roll angle, and differential rudder angle control command input is obtained; in order to reduce the action frequency of the actuator, a relative threshold event triggering condition is designed, and a command signal is transmitted to the steering engine only when the triggering condition is met to supply power to the steering engine. Meanwhile, a robust adaptive damping item is designed to calm an uncertain item of the model and external disturbance. From a simulation result, the system can better track an expected signal, the action frequency of the steering engine is obviously reduced, the control times are effectively reduced, and the energy consumption of the course control system is saved.

The invention relates to a safe and stable intelligent door lock adopting two power supplies and having a switching function. The safe and stable intelligent door lock comprises a main body; a handle,a rotating shaft, a clamping plate, a fingerprint window and a touch screen are arranged on the front surface of the main body; a gear, a movable plate, a movement mechanism and two power supply mechanisms are arranged in the main body; each power supply mechanism comprises a battery box, a translation plate, a connecting assembly, two electric conducting rods and two electric conduction assemblies; and the movement mechanism comprises a frame, a movable plate, two sliding plates and two fixing assemblies. When the safe and stable intelligent door lock adopting the dual power supply and having the switching function is in use, any one power supply mechanism can be selected by the clamping plate via the movement mechanism to supply power to a touch screen and a fingerprint window, so thatsufficient energy is provided when equipment is required to be used, an owner is prevented from being locked in a room, and the operation is more convenient. In addition, after the handle is rotated,power supply assemblies can automatically cut off the power of the touch screen and the fingerprint window, so that the power-on time is shortened, the cruising power is strengthened, and the practicability of the equipment is improved.

The invention relates to a single power supply ring network-based fault processing and supplementing method. Analysis is carried out in view of a single power supply ring network, a solution strategy for differential fault processing is obtained, the key point of the differential fault processing strategy under a single power supply ring network operation mode is that during a power supply restoration process, when downstream restoration is dynamically calculated, a new power supply appearing along with closing operation of a trip switch is detected. The adaptability of the single power supply ring network fault processing function in the current stage is considered, influences on a common fault processing logic algorithm by a trend for a special operation mode and defects of the common fault processing logic are also considered, the single power supply ring network-based fault processing and supplementing technology is obtained through comprehensive consideration, and thus, the distribution network fault processing reliability is improved, the power supply time is shortened, and the user satisfaction degree is provided.

The invention discloses a hydraulic support and an electro-hydraulic control system thereof. The system comprises a monitoring host, a power module, a controller and an electromagnetic valve driver. The power module is used for providing electric energy for the system, monitoring power utilization information of all loads in the system and sending the power utilization information to the monitoring host. The monitoring host is used for generating and issuing a corresponding first control instruction to the power module when the power utilization information provided by the power module contains current overload information so that the power module can control currents of the corresponding loads, and generating and issuing corresponding decision control instructions to the controller and the electromagnetic valve driver according to state information provided by the controller and/or the electromagnetic valve driver. The controller and the electromagnetic valve driver are both used for executing corresponding energy-saving measures according to the received corresponding decision control instructions. Thus, the system can improve the safety performance of a power source, shorten the power supply time of the power source and prolong the service life of a battery.