Abstract
Nowadays, more and more tunnel lighting intelligent control systems are applied into reality. For most control systems, there are five control modes. In this paper, the workings of the five control modes are expounded, and the conditions of adjusting the luminance level are obtained. Further, the luminance level and the power consumption of those control modes are compared. In order to choose the more suitable control mode, equipment cost, tunnel length and traffic volume are all considered for meeting equipment-lifetime and energy-saving. Combined lighting mode and automatic lighting mode are more suitable for most tunnels. Furthermore, the formula to forecast the lighting time using the minimum level and the difference of power-saving between combined lighting mode and automatic lighting mode are acquired. In the end, the options of the controls mode are listed for choosing.
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