312results about How to "Reduce turn-on time" patented technology

The invention discloses an engine cooling system and a temperature control method of cooling liquid thereof. The engine cooling system comprises a heat radiator, a water pump, a circulating water jacket, an electronic thermostat, a cooling fan, a cooling liquid temperature sensor and an engine control unit, wherein the control unit determines the cooling liquid target temperature of an engine under the current operation working condition according to acquired signals, such as engine rotating speed, load, speed, air inlet temperature, and the like and ensures that the engine works under the optimal cooling liquid temperature condition by controlling the heating time of the electronic thermostat and the high and low speed running of the cooling fan.

The invention discloses a generation method and a device for a solenoid pilot actuated valve drive current, and is applicable to a fuel injection system of an engine. The method has the following steps: a high-end drive circuit is connected with one end of a solenoid pilot actuated valve via a sampling resistor; a low-end drive circuit is connected with the other end of the solenoid pilot actuated valve; an electronic control unit sends a summit current holding control pulse signal AH and a current feedback control pulse signal AF to a signal processing circuit, and a low-end drive circuit control pulse signal B to the low-end drive circuit; and the signal processing circuit compares the solenoid pilot actuated valve drive current fed back by the sampling resistor with a current corresponding to a reference voltage, and sends a control signal C to the high-end drive circuit. By adopting the technical scheme, the method and the device of the invention have the advantages of short opening time of the solenoid pilot actuated valve, simple and reliable hardware current feedback control circuits, high regulating frequencies, good anti-interference effect in use, low price and the total production cost.

An IGBT die structure includes an auxiliary P well region. A terminal, that is not connected to any other IGBT terminal, is coupled to the auxiliary P well region. To accelerate IGBT turn on, a current is injected into the terminal during the turn on time. The injected current causes charge carriers to be injected into the N drift layer of the IGBT, thereby reducing turn on time. To accelerate IGBT turn off, charge carriers are removed from the N drift layer by drawing current out of the terminal. To reduce V_CE(SAT), current can also be injected into the terminal during IGBT on time. An IGBT assembly involves the IGBT die structure and an associated current injection/extraction circuit. As appropriate, the circuit injects or extracts current from the terminal depending on whether the IGBT is in a turn on time or is in a turn off time.

The invention discloses a multi-split air conditioner control method. The number N of off indoor units is obtained; if N is equal to 1, in each control period, expansion valves of the off indoor unitsare controlled to open and close at intervals for a first set time; if N is bigger than 1 but not bigger than a first set value, in each control period, the expansion valves of the N off indoor unitsare controlled to circularly open in sequence for a second set time, and at the same time, the expansion valve of one off indoor unit is opened; if N is bigger than the first set value, the expansionvalves of the off indoor units with a set number are circularly selected as one set in sequence to open for a third set time, and at the same time, the expansion valves of the selected set of off indoor units are opened; and if the set number is smaller than N, the openness of the expansion valves is a set openness. The control method shortens the opening time of the expansion valve of each off indoor unit, shortens the refrigerant noise lasting time of each off indoor unit, reduces the noise of each off indoor unit, and improves the user experiences.

The embodiment of the invention provides a method for reducing power consumption of user equipment and the user equipment. The method comprises the steps that when the UE carries out same-frequency neighborhood search, the UE obtains timed deviation marks corresponding to same-frequency frequency points, and whether a plurality of cells corresponding to the same-frequency frequency points are synchronous cells or not is determined according to the time deviation marks; if the cells are synchronous cells, the UE receives signals of the serving cells in preset time in a search period, and a radio frequency working unit of the UE is shut down during the time, except the preset time, in the search period, wherein the preset time is the subframe or an orthogonal frequency division duplex OFDM symbol where a main synchronizing signal and an auxiliary synchronizing signal are located. Due to the fact that only when the UE receives the signals in the search period, is the radio frequency working unit started, and the radio frequency working unit is shut down at other moments, the starting time of the radio frequency working unit of the UE can be shortened, and power consumption of the UE is reduced.

The invention discloses a cooling system combining natural cooling units and air-cooled water chilling units and applied to a data center computer room. According to the system, the natural cooling units and the air-cooled water chilling units are arranged independently and connected in series in the whole air-conditioning water system, and different operation modes are adopted to supply cold water meeting design parameter requirements to a tail-end air conditioning device at different outdoor temperatures. The system is mainly characterized in that when the outdoor temperature is lower in winter and transition seasons, the natural cooling units with low energy consumption, instead of the air-cooled water chilling units with high energy consumption, use outdoor natural cold sources to refrigerate the system, an energy-saving effect is realized, and the PUE (power usage effectiveness) value of a data center is reduced. Besides, the system adopts a closed circulating system, is not affected by the drift rate, consumes very little water, is suitable for a water-deficient area and has the water saving function, so that the system is convenient and reliable to operate, adopts intelligent control and is energy-saving and environment-friendly.

The invention provides a file storage cabinet with a mechanical quick ejection function. The file storage cabinet comprises a base, wherein four supporting seats are fixedly connected with the periphery of the lower side of the base; a stabilizing device is arranged on the lower side of the base; a supporting rack is fixedly connected on the upper side of the base; a drawer groove is formed in the supporting rack; three second-level ejection devices are fixed on the inner wall of the rear part of the drawer groove, and are fixedly connected with the rear end of a drawer; two moving grooves are symmetrically formed in two inner walls of the drawer groove, and balls are arranged in the moving grooves; and a guide rod is arranged in the right moving groove. The file storage cabinet has the beneficial effects that the stable state and the moving state of the whole device can be mutually transformed by utilizing the stabilizing device, the using effect is effectively improved; the drawer can be quickly ejected under the action of the second-level ejection device, and the drawer opening time can be effectively saved. The file storage cabinet has the advantages of reasonable structure design, convenience in use and the like, and has a certain popularization and application value.

The invention discloses a method and a device for controlling synchronous nitration and denitrification in a surface aeration oxidation ditch process, and relates to the technical field of biological denitrification of domestic sewage. The conventional surface aeration oxidation ditch process has the problems that removal rate of total nitrogen is low, energy consumption is high, and environment of synchronous nitration and denitrification is hardly controlled. Dissolved oxygen (DO) and ammonia nitrogen at the water outlet of an oxidation ditch aeration basin are monitored by DO and ammonia nitrogen on-line monitors, the turn-on and turn-off of a reverse umbrella surface aerator and a water impeller are controlled by indication of an on-line instrument, organic matter in the aeration basin is oxidized by fully using nitrate nitrogen, excessive aeration is avoided simultaneously, and double aims of energy saving and high-efficiency denitrification are fulfilled.

The invention discloses a computer room environment control method. The computer room environment control method comprises the following steps: a temperature and a humidity outside a computer room are acquired, and are compared with a preset temperature and a preset humidity; and if the temperature and the humidity outside the computer room are both in ranges of the preset temperature and the preset humidity, a precise air conditioner is closed, and an air fresher is started. In addition, the invention further discloses an intelligent control system of the computer room. The intelligent control system comprises an environment monitoring platform for closing the precise air conditioner and starting the air fresher when the temperature and the humidity outside the computer room, detected by an outdoor temperature/humidity detector outside the computer room, are both accordant with the preset temperature and the preset humidity; and the precise air conditioner is started, and the air fresher is closed when the temperature or the humidity outside the computer room is not accordant with the preset temperature and the preset humidity. The computer room environment control method and the intelligent control system of the computer room can reasonably use the air fresher and the temperature/humidity outside the computer room for changing the temperature/humidity in the computer room, so that the opening time of the precise air conditioner is shortened, and the electric energy is saved.

The invention discloses a resonant gate driving circuit suitable for a high-frequency application. The resonant gate driving circuit comprises a resonant capacitor Cr, a resonant inductor Lr, an auxiliary switching tube 1, an auxiliary switching tube 2, a main switching tube 1, a main switching tube 2 and a main power device Q1. The resonant capacitor Cr is connected in series with the resonant inductor Lr, the resonant inductor Lr is connected to a source electrode of the auxiliary switching tube 1, a drain electrode of the auxiliary switching tube 1 is connected to a drain electrode of the auxiliary switching tube 2, a source electrode of the auxiliary switching tube 2 is connected to a source electrode of the main switching tube 1, a drain electrode of the main switching tube 2 and a gate of the main power device Q1, a drain electrode of the main switching tube 1 is connected to a positive power supply voltage VCC, and a source electrode of the main switching tube 2 is connected tonegative power supply voltage VEE. According to the driving circuit of the invention, the resonant capacitor Cr, the resonant inductor Lr and the four switching tubes S1, S2, S3 and S4 are used to achieve gate resonant driving, the driving circuit can recover gate driving power, the driving circuit loss is reduced, and the switch-on and switch-off times of the main power device are shortened.

The invention discloses a temperature and humidity control algorithm for an intensive curing barn controller and relates to the technical field of environmental control in facility agriculture. Optimized PID (proportion integration differentiation) algorithm is used, and accurate control of temperature and humidity is realized by a controller. The controller comprises a PID controller, a relay link and a fuzzy controller for calibrating PID parameters; the PID controller completes control algorithm and calculates the control amount of output; initial parameters of the PID controller are achieved through the relay link; the fuzzy controller conducts online and real-time adjustments of the PID parameters of KP, Ki and KD according to deviation e and deviation rate of change ec so that the PID controller has adaptive capacity, and the system is always in an optimal control state. The temperature and humidity control algorithm for the intensive curing barn controller has the advantages of calculating parameters and variation amount of various environmental conditions in a curing barn, realizing accurate control of the temperature and humidity of the curing barn, and the like. Furthermore, the temperature and humidity control algorithm for the intensive curing barn controller can be used as a temperature and humidity controller in an intensive curing barn in domestic regions of any different latitude to conduct algorithm.

The invention discloses a control system and method for a multi-air-door air-cooled refrigerator and the refrigerator. The refrigerator comprises a plurality of chambers which share a compressor, an evaporator and a draught fan. Each chamber is provided with an air supply channel which is used for supplying air and provided with one air supply door. The control system comprises a plurality of temperature sensors and a controller. Compared with the prior art, the control system and method for the multi-air-door air-cooled refrigerator and the refrigerator have the advantages that the situation that the air supply doors are opened and closed alternately due to the fact that the chambers request for refrigeration independently is effectively avoided; the full efficiency operating time of the draught fan is increased; the power consumption quantity of the refrigerator is reduced; at the same time, the time for starting up the compressor is shortened; the service life of the compressor is prolonged advantageously; the product competitiveness is promoted; and in addition, the startup temperature and the shutdown temperature of each chamber is adjusted according to an opening transient temperature, corresponding to the last opening moment of the corresponding air supply door of each chamber, of the corresponding air supply door so that the control method can be applicable to multiple temperature zones of each chamber.

The invention, which belongs to the field of electrostatic discharge protection of integrated circuits, provides an ESD protection device with a bidirectional diode-string-triggered SCR structure. TheESD protection device comprises a diode string formed by a segmentation well technology, a bidirectional SCR structure, and a metal wire. A deep N well is arranged in a P substrate; a first P well, afirst N well, a second P well, and a second N well are formed in the surface region of the deep N well successive from left to right; and a P+ injection region and an N+ injection region are set in each well. P wells are inserted at intervals by using a mask preparation template in a second N well region; each P well is separated by an N well; and one pair of P+ injection region and N+ injectionregion is arranged in each P well. The metal wire is connected to the injection regions; and a positive electrode and a negative electrode are led out from the metal wire to realize forward conductionand reverse conduction. According to the invention, the trigger voltage is controlled by increasing or decreasing the number of diodes formed by well segmentation, so that the ESD protection device is applied in the low voltage field widely.

The invention discloses a lifting device for hydraulics simulation, which comprises a pillar, a lifting device and a switch device, wherein the pillar is used for supporting the lifting device; the lifting device is used for quickly lifting a gate through an elastic pull; and the switch device is used for controlling the lifting device to be stopped at a first stopping position and releasing the lifting device to enable the lifting device to lift the gate, and the first stopping position is corresponding to the elastic tensioning state of the lifting device and the closing state of the gate. Through an elastic device and pulleys, lifting power is provided for the gate, the initial gate lifting acceleration is large, the late acceleration is reduced gradually, time consumption for gate lifting is shortened, and operation safety is ensured.

Embodiments of the invention disclose a fingerprint acquisition control method and a terminal. The method comprises the following steps of receiving contact operation of a to-be-identified object on a metal ring; turning on a fingerprint sensor according to the contact operation; and controlling the fingerprint sensor to scan the to-be-identified object. By adopting the method, the power consumption of the fingerprint sensor in the terminal can be reduced, so that the endurance ability of the terminal is improved.

The invention discloses a dumper hydraulic system comprising a hydraulic power unit, and a parking circuit, a hydraulic circuit, a control circuit and a positioning circuit which are controlled by the hydraulic power unit. The hydraulic power unit is used for supplying oil for a main oil circuit through a single oil pump, and the main oil circuit is connected to an electromagnetic relief valve for oil return; the main oil circuit is used for supplying oil to an oil cylinder of the parking circuit through an electro-hydraulic directional valve, dual hydraulic control check valves, a one-way throttle valve and a hydraulic control check valve; the main oil circuit is used for supplying the oil to the oil cylinder of the hydraulic circuit through the electro-hydraulic directional valve, the dual hydraulic control check valves, the one-way throttle valve and the hydraulic control check valve, and the oil pressure of the main oil circuit is reduced through a pilot-operated reducing valve; the main oil circuit is provided with two branches connected to electromagnetic directional valves separately and then connected to the hydraulic control check valves of the parking circuit and the hydraulic circuit to form the control circuit separately; and the oil pressure of the main oil circuit is adjusted through the electromagnetic directional valves, the dual hydraulic control check valves and the one-way throttle valve, and the main oil circuit is used for supplying the oil to a pin cylinder of the positioning circuit. The system is complete in functions and high in safety.

The invention discloses a movable valve seat type spring loaded type relief valve. The movable valve seat type spring loaded type relief valve comprises a valve body provided with a cavity body. A water inlet and a water outlet communicated with the cavity body are formed in the valve body. A valve core and a valve seat are arranged inside the cavity body of the valve body. A spring is arranged inside a cavity of the interior of a front end cover. A spring ejection rod is installed at the top of the spring, and a spring base is arranged at the bottom of the spring. One end of the spring abuts against the spring ejection rod, and the other end of the spring abuts against the spring base. The valve seat comprises a two-stage step structure. The ascending end of the step structure is in clearance fit with the valve body and a sleeve. According to the movable valve seat type spring loaded type relief valve, a valve core king-rod structure is designed in the position of an injection inlet where fluid enters the valve core through the valve seat, so that the fluid power of the sprayed fluid is conducted to the valve core through a valve core king-rod, and the impact force and the corrosion to the valve seat by the fluid power are reduced; in addition, the step structure part of the valve seat makes contact with the two-stage conical surfaces of the valve core, so that a two-stage throttling valve port structure is formed between the valve seat and the valve core, and the effective partial pressure can be achieved.

The invention belongs to the technical field of electric vehicles, and particularly discloses an electric vehicle thermal management system and an electric vehicle, and the electric vehicle thermal management system comprises a battery control loop and a power system control loop. The battery control loop is coupled to a battery pack of the electric vehicle; the power system control loop comprisesa main path, a first branch path and a second branch path, heat transfer fluid in the power system control loop can flow into the first branch path and the second branch path from the main path and finally flows back to the main path, a radiator is arranged on the main path, the first branch path is coupled to at least one power system component of the electric automobile, and a switch valve is arranged on the second branch path. A first valve assembly which can couple the second branch path with the battery control loop, and the second valve assembly which can disconnect or connect the radiator with the main path are also included. The battery pack is heated by utilizing the waste heat of the power system component to ensure the low-temperature discharge power of the battery; the power system and the battery pack share the radiator for heat dissipation, the starting time of a cooling device of the battery pack is shortened, and energy consumption is reduced.

The invention provides a novel uncovering card print, which successively comprises a print body layer, a confidential information printing layer and a covering layer, wherein the covering layer successively comprises a binder coating, a non-transparent coating, a release coating and a transparent thin layer; the edge area of the covering layer is bound onto the print body layer by the binder coating; and the position where the confidential information printing layer is located is not bound onto the print body layer by the binder coating. The uncovering card print has the advantages that the defects that a current scratch card is unhygienic, wastes time, needs a hard pad and a scratching tool and is difficult to scratch open and the defect that a current uncovering card is thicker are overcome.

The invention discloses a fresh air energy-saving processing system and method in a temperature and humidity independent processing air-conditioner system. The fresh air energy-saving processing system comprises an atomization spraying processing device (1), a first electric three-way air valve (2), a high-temperature water surface air cooler (3), a low-temperature water surface air cooler (4), a condensate water collection device (9), a booster pump (6), a controller (7) and two temperature sensors (8). A fresh air step processing circuit is determined through one control device; if the temperature obtained after preliminary spraying atomization processing is lower than the inlet water temperature of the high-temperature water surface air cooler, secondary processing of the high-temperature water surface air cooler is sequentially performed on processed fresh air, and finally the processed fresh air enters the low-temperature water surface air cooler for final processing. The temperature obtained after preliminary spraying atomization processing is higher than the inlet water temperature of the high-temperature water surface air cooler, the processed fresh air passes the bypass of the first electric three-way air valve and directly enters the low-temperature water surface air cooler for final processing, and local component resistance in the fresh air processing process is decreased.