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Title:
CUT-OFF DEVICE, CUT-OFF METHOD AND COMPUTER PROGRAM
Document Type and Number:
Japanese Patent JP2016163403
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cut-off device, a cut-off method and a computer program capable of suppressing power consumption relating to a calculation of wire temperature even in the case that current is caused to constantly flow in an electric wire.SOLUTION: In a cut-off device 21, a CPU 40 calculates temperature difference between an ambient temperature of an electric wire 20 and a wire temperature on the basis of current information showing a current value flowing in the electric wire 20 with time, and adds the ambient temperature of the electric wire 20 to the calculated temperature difference. Thus, the CPU 40 calculates the wire temperature with time. In the case that the wire temperature calculated by the CPU 40 is equal to or more than a threshold temperature, an FET 30 is turned off to cut off the current flowing in the electric wire 20. The CPU 40 pauses the calculation of the wire temperature in the case that the calculated temperature difference is less than a reference temperature difference, and that a current value shown by the current information is less than a reference current value.SELECTED DRAWING: Figure 2

Inventors:
SUGISAWA YUKI
Application Number:
JP2015038914A
Publication Date:
September 05, 2016
Filing Date:
February 27, 2015
Export Citation:
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Assignee:
AUTO NETWORK GIJUTSU KENKYUSHO KK
SUMITOMO WIRING SYSTEMS
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
H02H6/00; B60R16/02; H02H3/087; H02H3/093; H02H5/04; H02H7/18; H02J7/00
Domestic Patent References:
JP2014209824A2014-11-06
JP2010172191A2010-08-05
JP2010239835A2010-10-21
Attorney, Agent or Firm:
Hideno Kono
Nobuo Kono