公开(公告)号：US07327101B1

公开(公告)日：2008-02-05

申请号：US11646138

申请日：2006-12-27

申请人： Timothy Chen ,  Ajay Karthik Hari ,  Gregory Alan Harper

发明人： Timothy Chen ,  Ajay Karthik Hari ,  Gregory Alan Harper

IPC分类号： G05F1/00

CPC分类号： H05B41/2985 ,  H05B41/2988 ,  Y10S315/05

摘要： Systems and methods are disclosed that facilitate sensing a pulse in a ballast circuit for a lamp when the lamp is in an end-of-life (EOL) stage or when the lamp is experiencing an arcing conduction condition, such as may occur when a contact between the lamp and its holder is compromised. Upon sensing the pulse, a microcontroller may distinguish between EOL and arcing conditions based on detected pulse width(s), and may initiate an appropriate response. For instance, if the pulse is due to an arcing event, the microcontroller may interrupt lamp operation for a brief period before restarting the lamp to mitigate the arcing condition. If the pulse is caused by an EOL condition, the microcontroller may place the lamp in a preheat or restarting mode to hasten lamp failure. In either case, responses to the sensed pulse mitigate the occurrence of dangerously high lamp temperatures that may damage lamp sockets.

摘要翻译： 公开了系统和方法，当灯处于寿命终止阶段（EOL）阶段时或当灯经历电弧导通条件时，诸如在接触时可能发生的情况，便于感测用于灯的镇流器电路中的脉冲 在灯与其支架之间受到损害。 在感测到脉冲后，微控制器可以基于检测到的脉冲宽度来区分EOL和电弧条件，并且可以启动适当的响应。 例如，如果脉冲是由于电弧事件引起的，微控制器可能在重新启动灯泡之前短时间内中断灯的工作，以减轻电弧状态。 如果脉冲是由EOL状态引起的，则微控制器可能会将灯置于预热或重启模式，以加快灯泡故障。 在任一种情况下，对感测脉冲的响应可以减轻可能损坏灯泡插座的危险的高灯温度的发生。