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Simulated roller display method for airborne liquid crystal displays

A technology of liquid crystal display and display method, applied in the direction of instrument, data processing input/output process, electrical digital data processing, etc., to achieve the effect of accurately displaying data, eliminating the influence of interpretation, and alleviating visual fatigue

Active Publication Date: 2018-09-14
TAIYUAN AERO INSTR
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: provide a kind of analog scroll wheel display method for airborne liquid crystal display, to solve the jump phenomenon when the digital display dynamic data of the airborne liquid crystal display screen and the rolling digital band display fluctuate larger data

Method used

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  • Simulated roller display method for airborne liquid crystal displays

Examples

Experimental program
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Embodiment

[0024] Application of analog scroll wheel display method to the digital reader of flight altitude:

[0025] Step 1: Determine the step size. When an object is moving in free fall on the earth, considering the influence of gravitational acceleration, the speed becomes larger and larger, and finally when gravity and friction force reach a balance, the object moves at a uniform speed. Considering this limit speed, roughly 200m / s, which is one The altitude changes by 200 meters per second (the actual flight altitude data of the aircraft cannot reach this limit value), and the screen refresh frequency is selected as 40ms, that is, the average data change per cycle is 8 meters.

[0026] Step 2: Interpret the absolute value of the difference between the displayed height of the previous cycle and the current actual height, and perform the following processing according to the absolute value and the size of 8 meters:

[0027] If the absolute value is less than or equal to 8 meters, the actua...

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Abstract

The invention belongs to airborne display technologies and relates to a simulated roller display method for airborne liquid crystal displays. The method includes: step one, determining a step size according to data characteristics and actual interpretation effects, wherein the step size refers to a minimum step size in quick rolling of a numerical tape, the data characteristics refer to physical jump limits of actual data parameters, an approximate step size range is determined according to the data characteristics, and the step size is finally determined according to the actual interpretationeffects; step two, interpreting an absolute value of displayed data in a last period and current actual data difference, and processing according to a relation between the absolute value and the stepsize. By simulation of roller characteristics of mechanical instruments, a display mode of the numerical tape is improved, a data smoothing algorithm is added, the numerical tape always rolls to an actual numerical value in a roller manner when a data source is in high fluctuation, and accordingly directness and accuracy in data display are realized, interpretation influences are eliminated, andvisual fatigue of pilots is greatly alleviated.

Description

Technical field [0001] The invention belongs to airborne display technology, and relates to an analog scroll wheel display method for an airborne liquid crystal display. Background technique [0002] The general display mode of the digital readers (such as the airspeed and altitude of the PFD screen) of the existing on-board liquid crystal display screen is digital display and rolling digital display. Among them, the advantage of digital display is that it can accurately display the data, but the disadvantage is that the dynamic data jumps seriously, which affects the interpretation. The advantage of the rolling digital display is that it can be displayed intuitively, and you can see the speed of the data change. The disadvantage is that there is still a jump phenomenon when the data source fluctuates greatly, which affects the interpretation. Summary of the invention [0003] The purpose of the present invention is to provide an analog scroll wheel display method for an airborne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0485G06F3/147
CPCG06F3/0485G06F3/147
Inventor 梁聪聪杨晓飞燕秀秀
Owner TAIYUAN AERO INSTR
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