Bus control-based digital light modulation technology of control panel of airplane driving cabin

Abstract

The invention discloses a bus control-based digital light modulation technology of a control panel of an airplane driving cabin. A digital light modulation apparatus is provided and comprises light modulation control units, light modulation control modules and bus lines, which are used for connecting the light modulation control units and the light modulation control modules. The apparatus is characterized in that: a light modulation control unit and a plurality of light modulation control modules are arranged at each light modulation unit; all the light modulation control units and the light modulation control modules are connected by bus lines; and each of the light modulation control module is connected with a light guide plate of a control panel. According to the invention, the provided digital light modulation apparatus has the following advantages that: both of light modulation control units and light modulation control modules employ a modularization design; and the universality is strong and the expansibility is good. When it is needed to increase the light modulation load line number, only a corresponded light modulation module is needed to be increased. Moreover, light modulation uniformity is high and light modulation consistency is good; and there is no pressure drop loss; therefore, when the apparatus is applied in an environment of a wide environmental spatial span, wide load distribution and limited installation position space, the apparatus has obvious advantages; and the apparatus is suitable for application to a large plane.

Description

technical field [0001] The invention relates to a digital control technology for brightness adjustment of an aircraft cockpit control panel assembly, in particular to a power source digital adjustment technology, which is mainly used for digital adjustment of the brightness of a light guide plate on an aircraft cockpit control panel assembly equipment. The traditional brightness adjustment method in the aircraft cockpit uses discrete voltage adjustment. The dimming technology using digital control technology controls the power output of different output points through programs to realize the overall digital control of the light guide plate on the aircraft cockpit control panel equipment, and can design different brightness change curves according to needs. A human-computer interaction environment that satisfies the comfort of the overall light environment in the cockpit environment of large aircraft, soft and consistent brightness changes, satisfies human-machine function sett...

AI Technical Summary

Problems solved by technology

However, the existing technology has the following disadvantages: (1) the discrete voltage adjustment method is adopted, although the control is simple, but the circuit loss is high; (2) the relationship between the corresponding adjustment voltage and the brightness cannot be accurately controlled; (3) the low-voltage transmission process loss is large, and There are many and long cable harnesses; (4) It is impossible to set the brightness change curve according to the demand

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