发明名称 |
Insulation resistance monitoring for vehicles with high-voltage power net |
摘要 |
A monitor for monitoring isolation resistance, impedance, or other isolation reflective conditions between vehicle systems as contemplated. The monitor may be useful in assessing insulation resistance between a high-voltage power net and a low-voltage power net. The monitor may be configured to assess a sufficiency of the insulation resistance based on a frequency response of the high-voltage power net. |
申请公布号 |
US8878547(B2) |
申请公布日期 |
2014.11.04 |
申请号 |
US201113286174 |
申请日期 |
2011.10.31 |
申请人 |
Lear Corporation |
发明人 |
Herraiz Marc Deumal;Magaña Albert Trenchs;Fàbregas Antoni Ferré |
分类号 |
G01R27/28;G01R27/18;G01R31/11 |
主分类号 |
G01R27/28 |
代理机构 |
Brooks Kushman P.C. |
代理人 |
Brooks Kushman P.C. |
主权项 |
1. A method of monitoring insulation resistance between a high-voltage power net and a low-voltage power net, the high-voltage power net and the low-voltage power net being included within a vehicle, the low-voltage power net being grounded to a first ground and the high-voltage power net being grounded to a second ground, the second ground floating relative to the first ground, the method comprising:
generating a test signal in a digital format; converting the test signal in the digital format into an analog test signal; applying the analog test signal to the high-voltage power net; converting the analog test signal applied to the high-voltage power net into a digital reference signal; measuring an output frequency response of the high-voltage power net to the analog test signal applied to the high-voltage power net while the high-voltage power net is active; and comparing the output frequency response to a frequency domain representation of the digital reference signal to determine whether a desired insulation resistance is provided between the high-voltage power net and the low-voltage power net. |
地址 |
Southfield MI US |