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ONE-POINT MEASUREMENT FOR END OF LAMP LIFE, ARC FLASH, AND IDLE PROTECTION FOR ELECTRONIC BALLAST
ONE-POINT MEASUREMENT FOR END OF LAMP LIFE, ARC FLASH, AND IDLE PROTECTION FOR ELECTRONIC BALLAST
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机译:电子镇流器的灯泡寿命,电弧闪光和怠速保护的一点测量
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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.
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