Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
負荷回路の保護装置
Document Type and Number:
Japanese Patent JP5639868
Kind Code:
B2
Abstract:
A load circuit protective device calculates increasing temperature of wire of a load circuit with a first predetermined sampling period (dt1) determined by a clock signal for normal operation when a semiconductor relay (Q1) is on to estimate the temperature of the wire. The temperature of the wire is therefore estimated with high accuracy. Moreover, when the semiconductor relay (Q1) is off, the load circuit protective device calculates decreasing temperature of the wire of the load circuit with a second predetermined sampling period (dt2) to estimate the temperature of the wire. The second predetermined sampling period (dt2) is determined by a clock signal for power-saving operation and is longer than the first predetermined sampling period (dt1). Accordingly, the calculation times of the temperature can be reduced, and the power consumption is therefore reduced.

Inventors:
上田 圭祐
丸山 晃則
中村 吉秀
生田 宜範
Application Number:
JP2010271247A
Publication Date:
December 10, 2014
Filing Date:
December 06, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
矢崎総業株式会社
International Classes:
H02H5/04; B60R16/02; H02H3/08; H02H6/00; H02H7/00
Attorney, Agent or Firm:
Hidekazu Miyoshi
Yukikuni Iwasaki
Masakazu Ito
Toshikazu Takahashi
Toshio Takamatsu



 
Previous Patent: クランプ具

Next Patent: CUP WHEEL FOR HARD BRITTLE SUBSTANCE