125results about How to "Avoid range" patented technology

Disclosed is a method for controlling an operational state of at least one subscriber stations in an OFDM/OFDMA communication system having ranging slots and ranging codes to be used for rangings. The subscriber station performing in a Null state, an initial ranging if an initial ranging request occurs, and transitioning from the Null state to an Idle state if the initial ranging is successful; transitioning to an Access state if a bandwidth request ranging request occurs in the Idle state, and performing in the Access state the bandwidth request ranging based on a random access technique; transitioning from the Access state to a Busy state if the random access-based bandwidth request ranging is successful, performing the bandwidth request ranging based on a scheduled access technique if the bandwidth request ranging request occurs in the Busy state, and transmitting data if the scheduled access-based bandwidth request ranging is successful; and transitioning to a Hold state if the data transmission is ended in the Busy state, and performing the scheduled access-based bandwidth request ranging if the bandwidth request ranging request occurs in the Hold state.

The invention relates to an underground water in-situ restoration system which is characterized by comprising a vertical impermeable wall arranged along the periphery of the polluted zone, wherein the vertical impermeable wall is in a semi-closed structure; the opening of the vertical impermeable wall is provided with a multi-treatment-unit reaction grid; the multi-treatment-unit reaction grid is arranged on the front edge downstream the underground water pollution stream and is perpendicular to the underground water flow; and the upstream and downstream of the multi-treatment-unit reaction grid are respectively provided with an underground water monitoring well for determining the change conditions of water level and water quality before and after underground water restoration. The system can overcome the defects of narrow restoration range, high clogging tendency, single treated pollution component and the like of the traditional continuous reaction wall in engineering application, can effectively restore underground water pollution streams with multiple pollutant components and complicated underground flow field, and can monitor the dynamic changes of water level and water quality of underground water in real time, thereby periodically cleaning and replacing the reaction medium in the treatment unit reaction grid.

A bypass conduit (23) connects an outlet passage of a compressor (21) of an exhaust gas turbocharger (20) and an inlet passage of an exhaust turbine (22), and a bypass valve (24) is provided therein. When the operating condition of a diesel engine (1) is found to be in a low-speed and high-load region, the bypass valve (24) is controlled by means of a valve controller to adjust the bypass conduit (23) so as to open it. Then, the charge air partly flows into an exhaust conduit (4) to increase the rotational speed of the exhaust turbine (22) and hence the charge air flow rate raises the output of the diesel engine (1). Additionally, as the charge air flow rate is increased, the operating condition of a compressor (21) is prevented from approaching the surging range.

The invention provides an independent photovoltaic dragging system capacity configuration method based on a multi-target optimization algorithm. The method comprises steps of: step 1, determining a topology structure of an independent photovoltaic dragging system; step 2, setting an energy control strategy of the independent photovoltaic dragging system; step 3, establishing an optimal configuration module; step 4, inputting a basic parameter of the independent photovoltaic dragging system; and step 5, according to the established optimal configuration module, using an improved NSGA-II multi-target optimization algorithm to solve an optimal solution set, analyzing the optimal solution set and carrying out weight allocation on the target function of each solution so as to calculate the finial configuration result. According to the invention, when electricity utilization requirements of users are met, environment load is reduced.

A transmitting unit emits a short pulse wave which satisfies a predetermined spectrum mask from an antenna into space. A receiving unit receives a reflected wave produced by an object existing in space of the short pulse wave emitted by the transmitting unit. A signal processing unit analyzes the object based on an output signal from the receiving unit. The transmitting unit has a pulse generator which outputs pulse signals each having a predetermined width at a predetermined frequency, and a burst oscillator which receives the pulse signal output from the pulse generator and performs an oscillation operation for time corresponding to the width of the pulse signal to output the short pulse signal. A width and a cycle of the pulse signal and an oscillation frequency of the burst oscillator are set such that almost an entire main lobe of a spectrum of the short pulse wave falls within a range of 24.0 to 29.0 GHz in the predetermined spectrum mask, and that a radiation power density to an RR radiowave emission prohibited band held by the predetermined spectrum mask is lower than a peak radiation power density of the main lobe by not less than 20 dB.

The invention discloses a mid-infrared laser measurement system and method for engine combustion process monitoring. The measurement system comprises a laser device and detectors, the laser device cantransmit mid-infrared laser within a specific wavelength range, and the mid-infrared laser is absorbed by engine combustion flames. Particularly, the laser transmitted by the laser device is dividedinto two beams by a beam splitter, one beam of laser passes a laser calibration device and is measured by the first detector and used for calibrating wavelengths generated by the laser device, the other beam of laser is absorbed by carbon dioxide gas generated by combustion, measured by the second detector and acquired by a data acquisition system, and concentration information of carbon dioxide can be acquired by processing, so that the combustion efficiency of an engine is acquired. According to the system, background absorption interference of the carbon dioxide in an environment is omittedwithin the selected laser wavelength range, the carbon dioxide is obviously absorbed in the high-temperature environment, interference of other combustion products such as water molecules and intermediates is omitted, and high measurement accuracy of the combustion efficiency of the engine can be achieved.

Swimming goggles include left and right frame bodies installed with lenses, a connecting element, and protective pads and head strap bases respectively disposed on the left and right frame bodies. The left and right frame bodies each of which has an inner peripheral face and an outer peripheral face, and the protective pads each has a face contact portion and a connecting portion. Contours of the outer peripheral faces of the left and right frame bodies and the face contact portions are fit to face portions with respect to inner peripheries of eye sockets of a cranium of a wearer. Upper and lower edges of the face contact portions with respect to lower sides of eyebrows and lower sides of under-eye bags remain gaps with the connecting portions in a manner that the upper and lower edges of the face contact portions are nearly in contact with the connecting portions.

The multi-speed transmission having rotatable shafts, planetary gearsets (RS1, RS2, RS3, RS4) and shifting elements (A, B, C, D, E). Carrier (ST4) of gearset (RS4) and the input shaft couple as shaft (1). Carriers (ST2, ST3) of respective gearsets (RS2, RS3) and the output shaft (AB) couple as shaft (2). Sun gears (SO1, SO4) of gearsets (RS1, RS4) couple as shaft (3). Carrier (ST1) of gearset (RS1) forms shaft (4). Sun gear (SO3) forms shaft (5). Ring gears (HO1, HO3) of gearsets (RS1, RS3) couple as shaft (6). Sun and ring gears (SO2, HO4) respectively of gearsets (RS2, RS4) couple as shaft (7). Ring gear (HO2) is shaft (8). In the flow of power, elements (A, B) are respectively between shafts (3, 4) and a transmission housing; element © is between shafts (1, 5); element (D) is between shafts (5, 8); and element (E) is between shafts (5, 7).

The invention discloses a motion scene imaging method and a motion scene imaging system based on an area array CMOS image sensor. The motion scene imaging method comprises the steps of: integrating encoding exposure and digital domain TDI techniques, regarding a encoding exposure time sequence as a frame, conducting digital domain time delay integration of different series in each single exposure process, processing a digital image formed by the CMOS image sensor to obtain a single exposure image after image motion compensation, superposing a plurality of the single exposure images after image motion compensation to obtain an encoding exposure image, and carrying out deconvolution operation to obtain a clear target image finally. The motion scene imaging method based on area array CMOS image sensor provided by the invention can avoid the problems of single exposure image motion blur and a limited digital domain TDI dynamic range of encoding exposure during high-speed motion scene imaging, thus the area array CMOS image sensor can be applied to high-speed motion scene imaging, eliminate the image shift blur and improve the imaging quality.

Embodiments of the invention disclose a method for adjusting screen brightness of a mobile terminal. The method comprises the following steps: carrying out GPS positioning on the mobile terminal in real time, and judging whether the mobile terminal can be successfully positioned; in the case of positioning failure, judging that the mobile terminal is in an indoor application scene, and adjusting the screen brightness of the mobile terminal according to a preset indoor application scene; and in the case of positioning success, judging that the mobile terminal is in an outdoor application scene, and adjusting the screen brightness of the mobile terminal according to a preset outdoor application scene. The invention correspondingly provides a device for adjusting screen brightness of the mobile terminal. By adopting the method and the device disclosed by the invention, the problems of non-timely adjustment and wrong judgment are solved, frequent and large-range change of the screen brightness is avoided, the screen brightness can be adjusted accurately in time, the user application is greatly facilitated, and the user experience is enhanced.

The invention discloses a vented anchoring and grouting device for a common anchor rod and a using method thereof. The vented anchoring and grouting device includes an anchor rod, fastening nuts, a sealing washer, a venting grouting composite end socket, a tray, a venting grouting integrated pipe, an inflatable elastic grouting-stop plug, a guide protection cover, a sealing dustproof film, and ananchoring agent. According to the vented anchoring and grouting device for the common anchor rod, a venting passage and a grouting passage are separately arranged, and the venting grouting composite end socket is fixed in a borehole through the inflatable elastic grouting-stop plug; and according to the vented anchoring and grouting device for the common anchor rod and the using method thereof, inthe process of mounting the common anchor rod, by adding the device, a mounting hole can be directly used as a grouting hole for grouting without affecting normal pre-tightening force reinforcement of the common anchor rod, while a rock mass is reinforced, a common end socket anchoring anchor rod is changed to full length anchoring, the vented anchoring and grouting device solves the problems ofventing and plugging in the processes of anchoring and grouting support and grouting, the grouting effect is improved, and construction workload and the support cost of anchoring and grouting are reduced.

The preparation process of positive pole material for lithium ion cell includes the following steps: setting the mixture of hydroxide, oxide or salt of lithium and hydroxide, oxide or salt of transition metal in certain ratio in crucible; setting the crucible in microwave oven to calcine the mixture; setting the crucible in electric furnace to sinter the calcined matter; cooling the crucible with sintered matter in cooling cavity; crushing and sieving the sintered matter to obtain the positive pole material product for lithium ion cell. The apparatus for preparing positive pole material for lithium ion cell, combined microwave-electric heating furnace, is also disclosed. The present invention is suitable for continuous large-scale production of positive pole material for lithium ion cell.

The present invention discloses a system and method for forming a low-frequency radio array digital beam. The system is mainly composed of a control center and a remote system. The method comprises the following steps: the control center transmits a clock signal, a trigger signal and an Ethernet signal to the remote system to complete data acquisition; and the remote system completes digital beam forming, wherein in a digital beam forming process, an FIR filter is adopted, and an FFT channel division and digital phase shifting method as well as a distributed stacking method are adopted. By adopting the system and method disclosed by the invention, problems of signal attenuation and inconsistent amplitudes/phases existing in analogue signal transmission can be avoided, and meanwhile, the calculation speed and accuracy of beam forming can be greatly increased, and beam pointing can be flexibly and accurately controlled.

The invention discloses a control identification method and device. The method comprises the steps of obtaining a sample data set, wherein sample data in the sample data set comprises an interface screenshot of a user interface and attribute information of a control in the user interface; Based on the sample data, training a target detection model; And based on the trained target detection model,identifying a control in the target user interface. Visibly, according to the invention, the target detection model is trained; According to the method and the device, the control in the control can be identified by only needing the interface screenshot of the user interface, and compared with a mode of searching the control by depending on the control tree in the prior art, the problems of unstable test execution and small automatic test range caused by unstable control tree acquisition of an original test framework can be effectively avoided.

The invention relates to a bidirectional direct-current motor driving integrated circuit, which comprises a control chip, an H-bridge switching circuit connected with the control chip, a forward input end, an inversion input end, a positive output end, a negative output end, a power supply positive electrode and a power supply negative electrode, wherein the H-bridge switching circuit is connected between the power supply positive electrode and the power supply negative electrode and comprises a first switching chip, a second switching chip, a third switching chip and a fourth switching chip which are connected with one another. Due to an optimized design and an optimized structure, the bidirectional direct-current motor driving integrated circuit has the advantages of small encapsulation volume, high efficiency, high driving current energy, multiple functions and the like; and by the bidirectional direct-current motor driving integrated circuit, the production and use cost of the whole circuit can be reduced.

The invention relates to a method for inverting transverse isotropic rock mass ground stress. Through rock mass displacement in a roadway, transverse isotropic rock mass ground stress is inverted. The method comprises the following steps: establishing a transverse isotropic rock mass model in an x-y-z coordinate system, a roadway cross section being parallel to an isotropic plane; determining the direction of ground stress in the transverse isotropic rock mass; taking a rock mass sample in the roadway, measuring transverse isotropic rock mass parameters of the rock mass sample; measuring deformation displacement of the rock mass in the roadway; and according to a roadway displacement analytic formula, obtaining a ground stress expression. The method can obtain a set of specific formulas to calculate transverse isotropic rock mass ground stress just by substituting the rock mass parameter measured values and a displacement measured value into the displacement analytic formula. The method prevents problems of complex equipment arrangement, large errors, and limited application range caused by measuring ground stress on site. The calculation method is simple and fast, and the method is mainly used for calculating transverse isotropic rock mass ground stress.

The invention discloses a microwave radiation measurement system for satellite-borne one-dimensional comprehensive aperture. The system comprises a scene radiometer receiver array, a calibration radiometer receiver, and a vibrating mobile phase network. The scene radiometer receiver array is used for receiving a scene microwave signal and an equivalent power internal noise source coherent signal and outputting an intermediate frequency signal. The calibration radiometer receiver is used for receiving a cold air external calibration signal and the equivalent power internal noise source coherentsignal, and calibrating through the cold air external calibration signal and a matching load so as to utilize the calibrated radiometer receiver to measure the equivalent power internal noise sourcecoherent signal in real time. The scene radiometer receiver array and the calibration radiometer receiver share the vibrating mobile phase network, so that the vibrating mobile phase network suppliesrequired local oscillator signals to the scene radiometer receiver array and the calibration radiometer receiver. The microwave radiation measurement system is simple in structure and easy to realize,and has the advantages of capable of measuring the equivalent power internal noise source coherent signal in real time, reducing the stability requirement of the equivalent power internal noise source coherent signal and the engineering realization difficulty, and improving the phase scaling precision.

A quick connect/disconnect coupling having a female coupler and a corresponding male coupler. The female coupler has a non-spill configuration and includes a housing and a valve body slidably movable in the housing. A valve member is slidably movable in the valve body toward and away from a valve seat, the valve member being configured to engage the male coupler. A piston is interposed between a main cavity and a trap chamber of the female coupler. The piston may be fixed to the valve member for common movement, and may include an internal flow passage for enabling fluid connection between the main cavity and trap chamber. A check valve may allow fluid flow from the trap chamber to the main cavity when the trap chamber pressure is greater than the main cavity pressure. A locking collar may be independently movable of the valve body to reduce the force required to connect the couplers.

The invention provides friction pendulum supporting bases and a bridge damping and shock insulation system. Each friction pendulum supporting base comprises an upper base plate assembly, a lower baseplate assembly and a spherical crown lining plate. The spherical crown lining plate is slidingly arranged between the upper base plate assembly and the lower base plate assembly, the lower base plateassembly comprises a baseplate, a lower supporting base plate and a locking assembly, and the lower supporting base plate is slidingly arranged between the baseplate and the spherical crown lining plate; the locking assembly is arranged between the lower supporting base plate and the baseplate, and the locking assembly locks the sliding positions of the baseplate and the lower supporting base plate when the earthquake displacement is larger than the temperature displacement; the sliding friction coefficient of the baseplate and the lower supporting base plate is smaller than that of the spherical crown lining plate and the upper base plate assembly and smaller than that of the spherical crown lining plate and the lower base plate assembly. The bridge damping and shock insulation system comprises a fixed supporting base, a transverse supporting base and the two friction pendulum supporting bases, one friction pendulum supporting base is a vertical supporting base, and the other frictionpendulum supporting base is a multidirectional supporting base. The friction pendulum supporting bases and the bridge damping and shock insulation system have the advantages of being good in dampingand shock insulation effect, high in safe reliability, good in smoothness and the like.

The invention relates to a cooling system for appliance cabinets and network cabinets, especially server cabinets, and a method for cooling appliance cabinets and network cabinets. Said cabinets are embodied in an air-tight manner and are provided with humidity stabilization in order to prevent damage due to condensation and a reduction of the absolute humidity. According to the invention, humidity stabilization is obtained by feeding external air in a defined, especially a controlled manner, and optionally discharging air from the closed cooling air circuit.

The embodiment of the invention relates to the technical field of aircraft control, and provides a multi-type power system control distribution method and a related device. The method and device are used for a multi-rotor-wing aircraft comprising a plurality of types of power systems. The method comprises the steps: obtaining the system parameters and position parameters of each power system, inputting the system parameters and position parameters of each power system into a preset power system estimation model, obtaining a control distribution matrix which gives consideration to the static pull force and dynamic response characteristics of different types of power systems; obtaining an expected control moment of the multi-rotor-wing aircraft, inputting the expected control moment into thecontrol distribution matrix, obtaining a control instruction of each power system, thereby preventing the power system with the higher response speed from being saturated prematurely or performing excessive-amplitude output while maintaining the overall response precision of the power system, and improving the overall robustness of the power system.