发明名称 |
Detecting circuit for circuit breaker |
摘要 |
The present disclosure relates to a detecting circuit for a circuit breaker, comprises: a detection sensor configured to output a detection signal by detecting a voltage or a current on an alternating current electric power circuit; a low pass filter configured to output a signal from the detection sensor after removing a high frequency component from the signal; an offset remover configured to output a signal from the low pass filter after removing a direct current offset from the signal; an amplifier configured to amplify a signal from the offset remover, and to output the signal; and a comparator configured to output a breaking control signal such that the circuit breaker operates to a circuit breaking position, if the detection signal input to the amplifier is equal to or larger than a reference voltage. |
申请公布号 |
US9190828(B2) |
申请公布日期 |
2015.11.17 |
申请号 |
US201414281417 |
申请日期 |
2014.05.19 |
申请人 |
LSIS Co., Ltd. |
发明人 |
Seon Jong Kug |
分类号 |
G01R31/02;H02H3/08;G01R19/02;G01R19/04 |
主分类号 |
G01R31/02 |
代理机构 |
Lee, Hong, Degerman, Kang & Waimey |
代理人 |
Lee, Hong, Degerman, Kang & Waimey |
主权项 |
1. A detecting circuit for a circuit breaker, comprising:
a detection sensor configured to output a detection signal by detecting a voltage or a current on an alternating current electric power circuit; a low pass filter connected to an output terminal of the detection sensor, and configured to output a signal from the detection sensor after removing a high frequency component from the signal from the detection sensor; an offset remover connected to an output terminal of the low pass filter, and configured to output a signal from the low pass filter after removing a direct current offset from the signal; an amplifier connected to an output terminal of the offset remover, and configured to amplify a signal from the offset remover and to output the signal; a comparator configured to output a breaking control signal such that the is circuit breaker operates to a circuit breaking position, if the detection signal input to the amplifier is equal to or larger than a reference voltage; and a sampling circuit connected to an output terminal of the amplifier, and configured to output a signal in a sampling manner from an output signal from the amplifier, at predetermined frequency intervals. |
地址 |
Anyang-Si, Gyeonggi-Do KR |