Title:
絶縁抵抗低下検出装置
Document Type and Number:
Japanese Patent JP6428448
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately detect deterioration of insulation resistance of an electrical system mounted to a vehicle by a comparatively simple constitution.SOLUTION: An insulation resistance deterioration detection device 600 comprises an AC power source 610, a detection section 640, a threshold setting section 650 and a determination section 660, and detects deterioration of insulation resistance of an electrical system 105 mounted to a vehicle 100. The AC power source 610 imparts an AC signal to a signal line electrically connected to the electrical system. The detection section detects a peak value of the AC signal in the signal line. The threshold setting section changes a threshold for determining insulation resistance deterioration according to electrical equipment connected to the electrical system. The determination section detects the deterioration of the insulation resistance on the basis of the peak value detected by the detection section falling below the threshold set in the threshold setting section.SELECTED DRAWING: Figure 2
Inventors:
Takayuki Naito
Matsumura Mitsuyori
Matsumura Mitsuyori
Application Number:
JP2015074969A
Publication Date:
November 28, 2018
Filing Date:
April 01, 2015
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60L3/00; G01R31/02
Domestic Patent References:
| JP2007147391A | ||||
| JP200757490A | ||||
| JP2005348483A | ||||
| JP200557961A |
Foreign References:
| WO2007089037A1 |
Attorney, Agent or Firm:
Fukami patent office