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49 results about "UNSTABLE ENVIRONMENT" patented technology

Method and system for positioning mobile terminal

The invention discloses a method and a system for positioning a mobile terminal in a subway. The method includes the steps: acquiring a base station position identifier of the mobile terminal passing through a base station and time corresponding to passing in real time; and when monitoring change of the base station position identifier, determining that signals are switched by the base station, determining a reference position, reference time and the time of the mobile terminal, determining an offset distance based on time difference between the time of the mobile terminal and the reference time and average moving speed, and finally, positioning the current mobile terminal according to the offset distance. By the aid of the method and the system, accurate position information is acquired in an environment with unstable signals in a targeted manner based on the running track and a path of a train fixed into the subway and real-time dynamic monitoring of change of the base station position identifier, and the mobile terminal is positioned in a highly real-time, high-stability and low-cost manner.
Owner:北京惠联科技有限公司

Prediction method for link stability of Ad Hoc network

The invention discloses a prediction method for link stability of an Ad Hoc network, which includes steps: firstly, assessing direct stability of the link; secondly, assessing indirect stability of the link; thirdly, assessing comprehensive stability of the link; fourthly, taking stability as a foundation for a multicast routing protocol so as to solve the problem that the multicast routing protocol based on the existing link stability serving as a routing standard is unable to adapt to an unstable environment with high mobility, strong interference and the like. The prediction method for link stability of the Ad Hoc network is simple in calculation, low in working capacity during a process of accessing the link stability, stable in holistic performance and strong in adaptability for the network and low in energy consumption and has low requirements for hardware.
Owner:SHANDONG UNIV

Data transmission method and data transmission device

InactiveCN105959298ASolving problems in unstable environmentsSolve the problem of frequently establishing connectionsNear-field systems using receiversNear-field transmissionFile transmissionPacket data transmission
The invention belongs to the technical field of communication and electronics, and discloses a data transmission method and a data transmission system. The data transmission method comprises the steps of: sequentially numbering to-be-transmitted small files; assembling the numbered to-be-transmitted small files according to a preset protocol format; sending the files, which are generated after assembly, via a data transmission channel; and according to received confirmation information, obtaining numbers of unreceived small files, and sending the unreceived small files again via the data transmission channel. According to the data transmission method and the data transmission device disclosed by the invention, through numbering the to-be-transmitted small files, sending to a receiver device after assembling according to the preset protocol format, and splitting the received files according to the preset protocol format into the small files by the receiver device, the problem of frequently establishing connections in file transmission process in the prior art is solved; and meanwhile, the small files are transmitted in a dynamic splicing manner after being numbered sequentially, so the problems of a single channel in a network unstable environment are solved.
Owner:LETV HLDG BEIJING CO LTD +1

Improved natural gradient variable step-size blind source separation algorithm

The invention belongs to the technical field of blind source separation and specifically relates to an improved natural gradient variable step-size blind source separation algorithm. The algorithm mainly comprises the following steps of randomly generating a hybrid matrix, carrying out linear mixing on source signals, and obtaining three hybrid signals; initializing a separation matrix, an autocorrelation matrix and a learning step, adding an orthogonal constraint, and controlling a variable step size by instantaneous errors and carrying out iteration; calculating an estimation signal; and drawing a recovered source signal waveform according to the estimation signal. The invention provides the natural gradient blind source separation algorithm based on the orthogonal constraint, the algorithm constrains the strength of recovered signals, and the stability of a separation process under an unstable environment is ensured; in addition, the convergence is accelerated, the separation precision is improved, the signal amplitude under the unstable environment constantly changes, the change frequency is relatively high, and a conventional separation method can not perform the separation, so that the related technology of the invention is advanced and prospective.
Owner:TAIYUAN UNIV OF TECH

A method for analyzing the state of a high-pressure heater based on a genetic simulated annealing algorithm

PendingCN109710661AImprove running response speedOvercome the defects of local optimal solutionDigital data information retrievalGenetic modelsError processingElement analysis
The invention provides a high-pressure heater state analysis method based on a genetic simulated annealing algorithm. The method comprises the steps that firstly, data of the operation state of the high-pressure heater are acquired, data loss error processing is conducted on data problems caused by equipment heat, and accidental error processing is conducted on data problems caused by unstable environments or unstable instruments and signals; Main variables influencing power generation operation are found by adopting a main element analysis method, so that the calculation data is reduced, theoperation reaction speed is increased, and representative measuring points are convenient to select; and mining the operation state data of the high-pressure heater based on a genetic annealing algorithm, and finally calculating the membership degree of the high-pressure heater and obtaining the optimal operation state of the high-pressure heater. The FCM clustering mining of the high-pressure heater operation state data is carried out based on the genetic simulated annealing algorithm, and the algorithm not only overcomes the defect that the FCM algorithm is caught in a local optimal solution, but also strengthens the global search function, thereby having better convergence and global search capability.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST

Automatic temperature and humidity control method for airtight cabinet based on temperature feedback

InactiveCN108919862AQuickly adjust cooling capacityRapid stability of ambient temperature and humiditySimultaneous control of multiple variablesEngineeringHUMID WEATHER
The invention relates to an automatic temperature and humidity control method for an airtight cabinet based on temperature feedback, and belongs to the technical field of shipborne radar environmentalcontrol. The automatic temperature and humidity control method for the airtight cabinet based on the temperature feedback aims to solve the problem of unstable environment temperature in the cabinetwhen the thermal load inside the cabinet changes rapidly. Aiming at the problem, the direct measurement temperature of a heating source is taken as the disturbance, and the temperature of an air supply opening and an air returning opening in the cabinet and the humidity of the air returning opening are taken as the feedback, the advantages of a feedforward compensation control technology and a cascade PID control technology are combined, an integral separation PID control algorithm is adopted, and the self-adaptation control of the temperature and humidity in the airtight cabinet is realized by using a liquid-state cold source. The automatic temperature and humidity control method for the airtight cabinet based on the temperature feedback is high in reliability, high in control speed and good in control effect, and is suitable for a heating load airtight cabinet with the heating value from 1.5kW to 4.5kW.
Owner:THE 724TH RES INST OF CHINA SHIPBUILDING IND

Dual-polarization-state analyzer for vibration sensing

The invention discloses a dual-polarization-state analyzer for vibration sensing. An incident light is cast to a light splitter via a first optical fiber collimator, and a first beam and a second beam are generated. The first beam is vertically cast to a first polarizer, and the light emitted from the first polarizer goes through a second optical fiber collimator. The second beam is vertically cast to a second polarizer, and the light emitted from the second polarizer goes through a third optical fiber collimator. The range of the angle between light transmission axis of the first polarizer and the light transmission axis of the second polarizer is 5 degrees to 85 degrees. The invention provides the dual-polarization-state analyzer, the cost of needed optical devices is low, the structure is simple, under the condition of increasing little cost, the influences of instable environment factors such as a temperature, a deployment mode and a non-polarization-maintaining fiber quality difference can be overcome, and the vibration sensing sensitivity is high. The invention provides a cost-limited fiber polarization detection vibration sensing system solution, and vibration characteristics can be detected through polarization state changes in an unstable environment.
Owner:KUNSHAN JINMING PHOTOELECTRIC SCI & TECH

Disposable beverage particle bag

The invention discloses a disposable beverage particle bag. The bag comprises a cover which is provided with micro holes and made of a material which meets the edible hygiene requirement, and a ring piece made of a material which meets the edible hygiene requirement and has the density higher than that of water, wherein grooves are formed on the left and right sides of the ring piece except the lower part and communicated with the outside leftwards or rightwards through notches; a closed chamber is defined by the cover and the ring piece, and beverage particles are put into the chamber; or a closed chamber is defined by the cover, beverage particles are put into the chamber, and the ring piece is fixed on the edge of the cover. The disposable beverage particle bag can be suspended in the water when brewed, the beverage particles in the bag can be directly brewed by pouring water, a brewing effect is good, and a beverage is uniformly released; and in addition, the effect of preventing the water in a cup from shaking can be achieved, the water is prevented from being overflowed, and the bag is suitable to be used in relatively unstable environments such as an airplane and a train.
Owner:庄敏

Unstable environment transient-state temperature measuring device based on coarse and fine two-stage light splitting structure

The invention discloses an unstable environment transient-state temperature measuring device based on a coarse and fine two-stage light splitting structure. The temperature measuring device comprises a front optical mechanism, a conducting fiber, a light splitting mechanism and a signal acquiring and processing module. The front optical mechanism transmits a spectrum sent by a target to the light splitting mechanism via the conducting fiber. The light splitting mechanism separates, extracts and sends characteristic spectrum signals to the signal acquiring and processing module. The signal acquiring and processing module generates voltage signals corresponding to strength of the characteristic spectrum signals, and analyzes the voltage signals based on the excitation temperature algorithm mathematic model and the radiation temperature algorithm mathematic model so as to obtain the transient-state temperature of a to-be-measured object. According to the invention, the temperature measuring device is capable of extracting characteristic spectrums of various kinds of elements in a wide spectral region and precisely measures the temperature of the target in the unstable and harsh environment with strong electromagnetic radiation and vibration and rapid temperature change.
Owner:NANJING UNIV OF SCI & TECH

Server control method, user equipment, storage medium and device

The invention discloses a server control method, user equipment, a storage medium and a device. According to the method, the dynamic information and the static information which influence the weight of the target server are acquired. The weight of the target server is determined according to the dynamic information and the static information, so that the weight of the server can be dynamically calculated. The service request is allocated to the target server based on the weight of the server. Therefore, the weight is dynamically adjusted according to the feedback of the server in the distribution process. The high-performance load balance can be well maintained in an environment with a complex and unstable working state of a rear-end cluster.
Owner:SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES

Unmanned aerial vehicle intelligent parachute device with parachute opening and propeller stopping tightly coupled

The invention belongs to the technical field of unmanned aerial vehicle equipment, and particularly relates to an unmanned aerial vehicle intelligent parachute device with parachute opening and parachute stopping tightly coupled; compared with the prior art, propeller sudden stop and parachute opening control of the unmanned aerial vehicle intelligent parachute device (1) with parachute opening and parachute stopping tightly coupled are integrated; two actions of parachute opening and propeller emergency stop are strongly coupled, so that the parachute opening and propeller emergency stop arein a causal relationship, the working principle that the parachute of the unmanned aerial vehicle needs to be stopped when opened and needs to be opened when stopped is completely met, and the stability of the parachute safety device is improved; (2) airborne equipment power supply control is realized, and an airborne equipment power supply can be synchronously switched off when the parachute is ejected, so that the airborne equipment is prevented from being damaged when working in an unstable environment in the parachuting process, the emergency stop capability of an out-of-control propelleris further enhanced, and the working stability of a parachute system is improved; and the device is also used for preventing a high-speed rotating propeller from hurting human bodies and properties inemergency.
Owner:江西正辰航飞智能科技有限公司

Single-hand somatosensory operation system and method for communication apparatus

The invention provides a single-hand somatosensory operation system for a communication apparatus. The system comprises a starting module, an acquisition module, an execution module and an exiting module, wherein the starting module is used for, when an operation signal of the communication apparatus is monitored by a sensor and identified as a starting action gesture instruction through a low-consumption calculation unit, recovering power supply of all elements and displaying a single-hand somatosensory operation interface; the acquisition module is used for matching information obtained by analyzing the operation signal monitored by the sensor by the low-consumption calculation unit with single-hand somatosensory instruction operation stored in a memory so as to acquire corresponding function list information; the execution module is used for executing related operations; and the exiting module is used for, when the signal monitored by the sensor is analyzed to be an exiting instruction, exiting from the single-hand somatosensory operation interface and enabling the communication apparatus to enter a power-saving mode at the same time. In addition, the invention furthermore provides a single-hand somatosensory operation method for the communication apparatus. According to the single-hand somatosensory operation method and system, software can be conveniently operated in an unstable environment in a single-hand somatosensory manner.
Owner:SHENZHEN FUTAIHONG PRECISION IND CO LTD +1

Method for counting illumination time of illumination equipment

The invention discloses a method for counting illumination time of illumination equipment, relates to the technical fields of illumination and software programming, and provides a complete solution for counting illumination time in random power failure, voltage fluctuation and other unstable environments. The method comprises a method for calculating a timing cycle and a data storage format through a central control unit (MCU) and an electronic memory, a method for detecting errors and self-recovery, and a timing method. The method solves the practical problems that the unstable environments cause illumination time data errors, the conventional design is low in time accuracy, write life of the electronic memory is mismatched with illumination life of the illumination equipment, and the like.
Owner:尚雪峰

Nuclear power water intake sea area blocking net tension on-line monitoring system

The invention discloses a nuclear power water intake sea area blocking net tension on-line monitoring system. The system comprises tension sensors, an ocean current meter, an on-site equipment box, afar-end server and a client, wherein the number of the tension sensors is two, the two tension sensors are connected with two ends of an interception net main rope in series, the two ocean current meters are located on the front side and the rear side of an interception net body and located at the same level and the same depth, a communication module is arranged in a local equipment box, an inputend of the communication module is in wired connection with the tension sensors and the ocean current meters, an output end of the communication module is in wireless connection with the far-end server, and the far-end server is in communication connection with the client. The system is advantaged in that a problem that a common tension sensor is small in measuring range and difficult to use on aninterception net is solved, unstable environmental influences are filtered out, monitoring data are more accurate, a local end wired and far end wireless networking mode is adopted, deployment difficulty of the monitoring equipment is lowered, and adaptability to the severe working environment of a water intake mouth is enhanced.
Owner:深圳市永兴隆工业发展有限公司 +1
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