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52 results about "Jump function" patented technology

Jump function. A function used to represent a sampled data sequence arising in the numerical study of linear difference equations.

Intelligent evacuation guide system for fire and gas leakage, and communication method thereof

The invention discloses an intelligent evacuation guide system for fire and gas leakage, and a communication method thereof. The system comprises a plurality of evacuation guide terminals, one evacuation guide gathering terminal and one industrial control computer, wherein each evacuation guide terminal node consists of a detection sensor, a wireless communication module and a direction indicating lamp. The detection sensors collect the fire or gas diffusion degree at a place, and transmit the fire or gas diffusion degree to the evacuation guide gathering terminal through a wireless self-organizing network, and then the evacuation guide gathering terminal communicates with the industrial control computer. The industrial control computer makes a reasonable evacuation route according to a floor map, and transmits the direct information to each node. The indicating lamps in the direction of each node changes correspondingly, so as to indicate the change of the evacuation route. The system has the functions of the self-organizing network and a jump function. If the network nodes are arranged in a range where the network nodes can communicate with each other, the network nodes can carry out the automatic search mutually, thereby forming an interconnection network. The system is good in flexibility, is safe and reliable, and is high in intelligentization degree.
Owner:许泷潇 +2

Nano porous media modeling method and system with relative density and edge diameter controllable

The invention discloses a nano porous media modeling method and system with the relative density and the edge diameter controllable. The method includes the following steps that S100, grid division isconducted on a cube model in the three-dimensional direction, and a three-dimensional grid model is obtained; S200, a finite difference method is used for obtaining the three-dimensional grid model with a three-dimensional bicontinuous porous structure; S300, the jump function is used for calculating the relative density of the three-dimensional grid model at the moment; S400, a random cut line is generated in a grid point of each edge of the three-dimensional grid model, a binormal distribution function is used for fitting the length probability density distribution of the random cut line, and the length corresponding to an extreme point with the maximum length probability distribution is the average edge diameter; S500, the steps S100-S300 are iteratively executed until the relative density and the average edge diameter of the three-dimensional grid model meet the preset requirements. By adopting the method, the nano porous media modeling method and system with the relative densityand the edge diameter controllable can be obtained, and the obtained model can be used for unidirectional stretching molecular dynamics simulation.
Owner:WUHAN UNIV

Dredging and blocking combined privacy protection method and system

The invention discloses a dredging and blocking combined privacy protection method and system. The method comprises steps as follows: 1) an application is scanned, all permissions of the application are listed, and whether the installed application is involved with a sensitive permission is judged; 2) as for the application involved with the sensitive permission, a user is reminded to use a cheat function strategy or a jump function strategy; the cheat function strategy specifically comprises steps as follows: the sensitive permission involved by an application program is hooked, a cheating function is implanted in the hooked function, and when the sensitive permission of application access is monitored, a false value is returned for the application; the jump function strategy specifically comprises steps as follows: a permission involved with a malicious application is extracted, and calling of the malicious application permission is bypassed by modifying an entry address of a permission function; 3) according to the strategy selected by a user, when the sensitive permission applies data, the false value is returned to the sensitive permission or permission calling is directly jumped. The security problems of privacy disclosure, permission abuse and the like of an existing application of a mobile phone can be effectively solved.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Method for converting flow chart into executable language

The invention provides a method for converting a flow chart into an executable language. The method comprises the following steps: a) obtaining and storing target flow chart data, node data and node relational data information; b) according to the node data and the node relational data information, generating the node sequence of flow direction relationship between nodes; c) causing node numbers in the node data into corresponding statement mark numbers; d) according to the node data information, generating an expression corresponding to each node of the flow chart; e) according to the information of the next node in the node sequence, generating a goto statement. According to the method for converting the flow chart into the executable language, which is disclosed by the invention, the jumping function of the goto statement and the node flow direction relationship in the flow chart are fully utilized, and influence of chaos caused by using if conditional statements to nest for multiple times in the process of converting the complex flow chart made by a user into the executable language is avoided. The structure is clear, time for programming personnel to detect wrong statements when programmed statements go wrong is shortened, thereby being convenient to maintain, and improving the programming efficiency. According to the method for converting the flow chart into the executable language, which is disclosed by the invention, the user and the flow chart can be better interacted.
Owner:SUZHOU JINGYIHUI INFORMATION TECH

Cutoff frequency correction circuit of filter

The invention discloses a cutoff frequency correction circuit of a filter. A jump function increased from a first voltage to a second voltage is input to the correction circuit. The correction circuit comprises a primary passive filter, a first comparator, a second comparator, a counter, a digital block and a filter, wherein the primary passive filter integrates the jump function to obtain a third voltage; when the third voltage is higher than a set first reference voltage, the first comparator outputs a high-frequency signal; the second comparator is used for outputting high-frequency signals in a first period from the moment of applying the second voltage to the moment that the first comparator outputs the high-frequency signal; the counter is used for counting the number of the reference clocks input in the first period; the digital block is used for calculating the time constant variation rate of the filter by using the number of the reference clocks counted by the counter, and generating a correction code capable of correcting the time constant variation rate; and the filter is used for correcting cutoff frequency according to the correction code of the digital block. The correction circuit can increase the cutoff frequency regulating speed so as to shorten the operation preparation time of a system comprising the filter and increase the ratio of the occupied area of the digital block to the cutoff frequency accuracy.
Owner:FRAMATOME CONNECTORS INT SA

Method for modifying on-orbit product software on satellite without influencing normal operation

The invention provides a method for modifying on-orbit product software on a satellite without influencing normal operation. The method comprises the following steps: (1), obtaining first injection code information which comprises a new product function execution code and an injection region head address, and extracting the new product function execution code from the first injection code information and storing the new product function execution code into an injection region; and (2) obtaining second injection code information including a jump function execution code jumping to the head address of the injection region and the head address of the storage region where the to-be-modified code is located, extracting a jump function execution code; storing the to-be-modified code in a storagearea where the to-be-modified code is located; replacing the to-be-modified code in the program running in the on-board product with the skip function execution code, when the skip function executioncode enables the program pointer to run to the to-be-modified code, skipping to the head address of the injection area, calling a new product function execution code, and executing the new product function execution code. According to the invention, the safety of product on-orbit operation and the product maintainability are greatly improved.
Owner:BEIJING INST OF CONTROL ENG
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