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Adaptive multi-rate simulating real-time visual demonstration system

A technology of adaptive multi-rate and presentation system, applied in the field of real-time visual presentation system of adaptive multi-rate simulation, which can solve the transmission delay and data loss, the uncertainty of the update rate of the presentation screen, the uncertainty of the non-real-time operating system clock, etc. problem, to achieve the effect of ensuring continuity

Inactive Publication Date: 2009-06-10
BEIHANG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the transmission delay and data loss caused by network uncertainty, as well as the clock uncertainty of non-real-time operating system, the time asynchronous between the simulation system and the demonstration system, the uncertainty of the simulation rate, and the uncertainty of the update rate of the demonstration screen and other reasons limit the application of real-time visual demonstration system on various simulation systems

Method used

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  • Adaptive multi-rate simulating real-time visual demonstration system
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  • Adaptive multi-rate simulating real-time visual demonstration system

Examples

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Embodiment 1

[0022] Example 1: Real-time demonstration for implementing real-time simulation systems

[0023] Experimental conditions: The data update rate of the real-time simulation system is 1000 times / s, and the data update rate of the demonstration unit is 60 times / s.

[0024] Computer A is a real-time PC, and computer B is a non-real-time PC, as shown in Figure 3.

[0025] The receiving unit sends the simulation data packet D output by the simulation system 1 Store according to the first-in-first-out principle, and store the simulated data packet D 1 sent to the asynchronous rate conversion unit and the adaptive rate estimation unit; in the receiving unit of this system, when the simulation data stored by the receiving unit exceeds the preset storage capacity of the receiving unit, the asynchronous rate converting unit receives The simulation data packet D sent by the receiving unit 1 , and receive the ratio Rtimescale of the display update rate output by the adaptive rate estim...

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Abstract

A real time visual demonstration system of adaptive multi-rate simulation is prepared as forming asynchronous rate converter by asynchronous rate conversion unit, adaptive rate estimation unit and sending unit; utilizing a time tracking mechanism to revise clock of demonstration system to use received simulation clock as input and to use demonstration system clock as output for carrying out preestimation on sampling time of demonstration system so as to ensure consistency of clock and continuity of picture.

Description

technical field [0001] The present invention relates to a visual demonstration system of a time-domain simulation system, more particularly, refers to a real-time visual presentation system for self-adaptive multi-rate simulation for solving the communication between multi-rate simulation and real-time demonstration. Background technique [0002] The data update rate of the visual demonstration system is generally fixed, but different simulation systems have different data update rates, which makes it impossible to demonstrate different simulation systems in the same demonstration system. [0003] The visual demonstration system of the simulation system must meet the requirements of scientific computing and real-time data visualization, and provide an intuitive interactive visualization environment. At present, all three-dimensional demonstration systems are realized by non-real-time operating systems such as windows. Due to the transmission delay and data loss caused by ne...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L25/03
Inventor 陈培韩潮邓郡戴阳刘洋张琳琳
Owner BEIHANG UNIV