| 摘要 |
A modular solid state light apparatus ideally suited for use in traffic control signals. Current state of the art solid state signals are sealed units which fit into existing signal cases once the primary lens and incandescent bulb, and sometimes even the incandescent reflector, are removed. The modular system replaces the entire case with a custom case designed to accommodate current and future features at approximately 1/10the the present cost of a stand alone system. These upgrade features include but are not limited to vehicle preemption, electronically steerable beam, predicitve failure analysis, various power supplies, LED arrays in various colors, optical alignment tools used for installation, video camera, in car Telematics, video loop detection, red light running, various communications links, infrared sensors to sense people and vehicles under fog, rain smoke, and other adverse visual conditions, chemical "sniffers", automobile emission monitoring, and adaptive control. The modular traffic functions are adapted to be selectively added and upgraded over the life of the signal, and permitting easy service thereof. |
