DUPLEXING BOARD, AND METHOD FOR CONVERTING STATE OF DUPLEXING BOARD BY USING VOLTAGE DROP DETECTION

摘要

PURPOSE: A duplexing board, and a method for converting a state of a duplexing board by using voltage drop detection are provided to prevent loss of data and prevent a contact noise from generating, thereby increasing the reliability of a system. CONSTITUTION: A power monitoring part of an active board monitors an output voltage of a power supply part(S1). If the power monitoring part detects that the power supply part outputs a voltage dropped more than 5%, the power monitoring part judges that the active board is demounted(S2). The power monitoring part transmits a demount signal to a board state deciding unit of a standby board(S3). The board state deciding unit of the standby board operates the standby board in an active state(S4). If the active board is normally operated, the power monitoring part transmits a normal operation signal to the board state deciding unit of the standby board(S5). The board state deciding unit of the standby board maintains a standby state(S6).