发明名称 |
CIRCUIT FAULT DETECTION DEVICE |
摘要 |
A circuit fault detection device includes: an interruption-signal generation unit that outputs an interruption signal for a drive circuit stopping driving of a drive target on a basis of the interruption signal; a pulse generation unit that includes an adjustment unit adjusting a time during which a pulse signal is in an OFF state and that generates the pulse signal; a signal synthesis unit that outputs a logical AND of the interruption signal and the pulse signal; a filter circuit that inputs, as an output, a signal obtained by delaying an output signal of the signal synthesis unit to the drive circuit; and a monitoring unit that determines whether a circuit fault has occurred on a basis of an output voltage of the filter circuit. |
申请公布号 |
US2015316621(A1) |
申请公布日期 |
2015.11.05 |
申请号 |
US201214650912 |
申请日期 |
2012.12.12 |
申请人 |
IEDA Masataka;SANO Shuya;ONO Masaaki |
发明人 |
IEDA Masataka;SANO Shuya;ONO Masaaki |
分类号 |
G01R31/40 |
主分类号 |
G01R31/40 |
代理机构 |
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代理人 |
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主权项 |
1. A circuit fault detection device comprising:
an interruption-signal generation unit that outputs an interruption signal for a drive circuit stopping driving of a drive target on a basis of the interruption signal; a pulse generation unit that includes an adjustment unit adjusting a time during which a pulse signal is in an OFF state on a basis of a PWM signal input to the drive circuit and that generates the pulse signal; a signal synthesis unit that outputs a logical AND of the interruption signal and the pulse signal; a low-pass filter circuit that inputs, as an output, a signal obtained by delaying an output signal of the signal synthesis unit to the drive circuit; and a monitoring unit that determines whether a circuit fault has occurred on a basis of whether a decline in an output voltage of the low-pass filter circuit is observed after a pulse signal in an OFF state is output from the pulse generation unit. |
地址 |
US |