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77 results about "Time sensitivity" patented technology

Time sensitivity. Time sensitivity or time awareness, also known as witch-blood among the lesser species, was an ability possessed by individuals or species that allowed them to naturally perceive and influence the ebb and flow of time.

Statistical priority multiple access method for a high time-sensitive service

The invention discloses a statistical priority multiple access method for a high time-sensitive service. According to the method, it is assumed that a physical layer adopts frequency hopping and timehopping communication technologies, and frequency hopping and time hopping patterns are distributed to nodes firstly according to the network scale and service transmission requirements; The service load value of the logic channel corresponding to the frequency hopping and time hopping pattern is obtained by detecting the occupation condition of the pulse time slot, and the transmission thresholdvalues of various priority services are calculated by adopting a filling test method. And at the beginning of each network time frame, the sending node sequentially checks whether to-be-sent data packets exist in the network layer queue according to the priority order, and compares the service load values of the frequency hopping and time hopping patterns of the receiving nodes of the data packetswith the sending threshold value of the priority service. And if the service load value is smaller than the sending threshold value, the node can send the data packet with the priority according to the frequency hopping and time hopping pattern of the receiving node. A simulation result in an EXata network simulation environment proves that the method can reliably support transmission of the high-time-sensitivity service.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Comprehensive identification method for motion characteristics of axisymmetric high-speed flight vehicle

The invention discloses a comprehensive identification method for motion characteristics of an axisymmetric high-speed flight vehicle. The comprehensive identification method for the motion characteristics of the axisymmetric high-speed flight vehicle is used for solving the technical problem that an existing self-adaptation attitude control method for a hypersonic flight vehicle is poor in real-time performance. According to the technical scheme, the comprehensive identification method for the motion characteristics of the axisymmetric high-speed flight vehicle comprises the steps that a high-speed flight vehicle full mathematical model is established to deduce a control-oriented attitude motion equation, a characteristic equation is established, a functional relationship between parameters of the characteristic equation and sensor measurement is established, parameters of a control-oriented high-speed flight vehicle characteristic model can be obtained rapidly and directly in an online mode through algebraic calculation, and then the parameters are used for adjusting parameters of a self-adaptation controller. Therefore, an iterative operation process needed by a system identification method is omitted, the efficient and rapid identification method is provided for obtaining of system parameters of the flight vehicle, the requirement of the high-speed flight vehicle for time sensitivity is met, the defects and shortcomings of the system identification method are overcome, and real-time performance of a control method for the hypersonic flight vehicle is improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Software definable real-time transmission mechanism

InactiveCN109600259AEnsure real-time requirementsEnsure real-time transmission requirementsData switching networksService flowQuality of service
The invention discloses a software definable real-time transmission mechanism which comprises the steps that (1) a defined network is composed of an application layer, a control layer and a data layer, and the application layer comprises a network state management module, a scheduling module, a slice construction module and a configuration management module; 2) the network state management modulemaintains a network topology, a network state and network node information; and 3) the slice construction module divides the service flow into a time-sensitive network service flow and a common network service flow according to the service quality requirement of the service flow, a network slice is established and the configuration of the network slice comprises priority configuration of a transmission path, a forwarding queue and a switching node; 4) a scheduling module identifies service quality requirements of different flows, and searches bandwidths required by corresponding network slicesto determine whether to accept the flows to schedule the flows of the different flows; and 5) according to a result returned by the network slice structure, the network slice structure is deployed ona corresponding switch through a configuration management module to ensure real-time transmission requirements of different service flows in the industrial internet.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Expression vector for stably indicating cell autophagy activities, establishing method and application method thereof

The invention belongs to the biomedicine field, and aims at providing an expression vector for stably indicating cell autophagy activities, an establishing method and an application method thereof. By constructing a slow-virus expression plasmid containing an EGFP-LC3 autophagy reporter gene and adopting a four-plasmid system, the invention establishes a slow-virus expression vector capable of enabling cells to stably express an EGFP-LC3 gene. By using the expression vector to infect a host cell, the EGFP-LC3 gene can be stably integrated in a genome of the host cell, and the host cell can stably and efficiently express the EGFP-LC3 and indicate cell autophagy changes. A stable autophagy indicating cell can be established by using the expression vector, and the cell autophagy changes are quickly and quantitatively analyzed by an image analysis method based on Top-hat operators and morphological filtration. The invention has the characteristics of stable and reliable autophagy indication, real-time sensitivity, quick and accurate autophagy quantification, simply and convenient operation and the like, greatly facilitates autophagy observation and analysis, and can be widely used for autophagy-correlated researches.
Owner:ZHONGSHAN HOSPITAL FUDAN UNIV

Pulse width modulator single event effect time-sensitive characteristic analyzing method

The invention relates to a pulse width modulator single event effect time-sensitive characteristic analyzing method.The method comprises the steps of conducting laser pulse traverse scanning on all function modules of a sample to obtain single event effect failure modes and single event effect sensitive parameters of all the function modules, selecting typical incident positions of all the function modules to enable a laser pulse to have incidence to the typical incident positions of all the function modules according to a certain incident period, analyzing and obtaining single event effect time-sensitive information of all the function modules, obtaining the single event effect time-sensitive characteristic of a pulse width modulator and the like.According to the method, pulse width modulator single event effect time-sensitive characteristic analysis is achieved by combining controllable scanning of the laser pulse and single event effect sensitive parameter extraction of all the function modules on the basis of function module partition of the pulse width modulator, and the method is novel, is an important supplement for heavy-ion single event effect ground simulation tests and provides a support for single event effect time-sensitive characteristic research of more complex digital and analog hybrid circuits.
Owner:NORTHWEST INST OF NUCLEAR TECH

Car sharing request order matching method and device

The invention disclosure a car sharing request order matching method and device. The method comprises the steps that the start point and end point of a first user are acquired to generate a first travel path, and the first estimated time of the first travel path is completed; the first location of a service provider is acquired to generate a second travel path from the first location to the start point of the first user, and the second estimated time of the second travel path is completed; the start point and end point of a second user are acquired to generate a third travel path, and the third estimated time for the first user to arrive at the end point is acquired when a car is shared with the second user; a fourth travel path from the second position of the service provider to the start point of the second user is acquired, and the fourth estimated time of the fourth travel path is completed; the ratio of the sum of the third estimated time and the fourth estimated time to the sum of the first estimated time and the second estimated time is calculated; and if the ratio is less than a preset value, a car sharing request order is successfully matched. According to the embodiment of the invention, the time sensitivity of a car sharing passenger who gets on the car first can be reduced, and the user experience of the car sharing passenger is improved.
Owner:BEIJING DIDI INFINITY TECH & DEV

Digital filtering calculation method

The invention discloses a digital filtering calculation method. The method comprises the following steps: selecting a filtering algorithm parameter constant and an initial value Z0; continuously acquiring sampling value data X1, X2... Xm, and calculating an anti-interference arithmetic mean value Yn; and calculating a residual error rate C=|Yn-Zn-1|/Xup, judging a weight coefficient a according toa difference weight table [Ai, Ci], and calculating a filtering value Zn=a*Yn+(1-a)*Zn-1. The method can effectively deal with the relative contradiction of complex type data to the time sensitivityand estimation smoothness of the filter, and greatly improves the autonomous adaptability of the filtering algorithm to multiple scenes and complex data compared with a conventional simple digital filtering algorithm. Compared with complex digital filtering, few microprocessor resources are occupied, the algorithm is simple, the model is concise, and codes are concise; full-range application, quick response, good anti-interference performance, good smoothness and stable output are realized; and the algorithm is clear, the formula is digital, the method is simple and practical, the program process and codes are easy to realize, and the method has high practical value.
Owner:BEIJING XINGDA SMART CONNECTIONN TECH CO LTD

Flame detector with angle convenient to adjust

The invention discloses a flame detector with the angle convenient to adjust. The flame detector comprises a detector body, a cooling portion and a fixing portion. The detector body comprises an outer shell, the outer shell is of a barrel-shaped structure, and the two ends of the cooling portion are connected to the open end of the outer shell of the detector body and the fixing portion respectively. The cooling portion comprises an air pipe and an air inlet formed in any position of the air pipe. The fixing portion comprises a mounting plate, a rolling ball and a ball seat, a ball-shaped cavity is formed in the ball seat, the ball seat is in bolted connection or threaded connection with the mounting plate, the rolling ball is located in the cavity, and the two ends of the air pipe are fixedly connected with the open end of the outer shell of the detector body and the rolling ball respectively. An air outlet is formed in the outer shell of the detector body. The flame detector is simple in structure, the detector body has the good angle adjusting performance relative to a monitoring point, and the angle can be conveniently adjusted in the mounting and using process of the flame detector. Meanwhile, the long-time sensitivity and the good cooling effect of the flame detector can be guaranteed through the structure of the flame detector.
Owner:SICHUAN TIANWEI ELECTRONICS

Time sensitivity target detection positioning method under airport space relation constraint

The invention discloses a time sensitivity target detection positioning method under an airport space relation constraint. The time sensitivity target detection positioning method comprises the steps that front view image maps containing an airport area and airport buildings are chosen from satellite images, an airport reference image is generated according to the front view image maps, secondary landmark reference images in airport area are chosen in the airport reference image, and constraints of the time sensitivity target moving areas and time sensitivity resident areas are constructed in the secondary landmark reference images. Real-time images are obtained, perspective transformation is carried out on the secondary landmark reference images according to real-time imaging line numbers and real-time imaging column numbers of the real-time images and flying guarantee parameters of a moving platform, and the time sensitivity target moving areas and the time sensitivity resident areas after conversion are obtained. Resident targets in the time sensitivity resident areas are identified and positioned, and detection positioning is carried out on moving targets in the time sensitivity target moving areas. The time sensitivity target detection positioning method can resolve the technical problems that the target dimension changes in time sensitivity target detection, more interference exists under a ground background, and detection real-time performance is poor.
Owner:HUAZHONG UNIV OF SCI & TECH
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