Patent ID: 8078331
Filing Date: 2011-12-13
Classification: H02H

Abstract:
1. A power supply control system, comprising: a plurality of electronic control units, each of the plurality of electronic control units configured to control an electronic device independently of the others of the plurality of electronic control units; a monitoring device; a communicating line coupling the each of the plurality of electronic control units and the monitoring device; a power source line coupled with the each of the plurality of electronic control units for supplying an operating voltage to the each of the electronic control units; a power source switch disposed on the power source line and configured to stop the supply of the operating voltage to all of the plurality the electronic control units when the power source switch is deactivated; assigned threshold value setting means provided in the each of the plurality of electronic control units for setting an assigned threshold value of the each of the plurality of electronic control units in accordance with an operating state of the each of the plurality of electronic control units; self-information transmitting means provided in the each of the plurality of electronic control units for transmitting information about the operating state and the assigned threshold value set in accordance with the operating state to the monitoring device through the communicating line; deactivating threshold value calculating means provided in the monitoring device for calculating a deactivating threshold value based on the assigned threshold value of the each of the plurality of electronic control units; electric current value detecting means provided in the monitoring device for detecting an electric current value of the power source line; and power-source switch deactivating means provided in the monitoring device for deactivating the power source switch when the electric current value is greater than the deactivating threshold value; wherein the operating state of the each of the plurality of electronic control units is switchable among a plurality of operating modes and the assigned threshold value of the each of the plurality of electronic control units is set to be a different value for each of the plurality of operating modes.