Wiper control method and wiper control device

A wiper control device controlling an operation of a wiper device comprising:

• a wiper blade which is placed on a windshield of a vehicle;
• a wiper arm to which the wiper blade is attached and which is reciprocally driven between an upper reversal position and a lower reversal position set on the windshield;
• a wiper motor which drives the wiper arm;
• and
• a wiper switch which switches an operation mode of the wiper arm,
• the wiper control device comprising:
• a wiper switch detection portion which detects the operating state of the wiper switch;
• a wiper position detection portion which recognizes a current position of the wiper arm based on a signal from a position detection sensor which detects a position of the wiper arm;
• an arm operation determination portion which determines an operation control state of the wiper arm based on the operating state of the wiper switch and the current position of the wiper arm;
• and
• a motor operation instruction portion which operates the wiper motor based on determination of the arm operation determination portion,
• wherein the arm operation determination portion sets a stop position for stopping the wiper arm for a predetermined time above the lower reversal position, and when restarting the wiper arm stopped on an upper reversal position side with respect to the stop position, temporarily stops the wiper arm at the stop position for the predetermined time, moves the wiper arm to the upper reversal position after the predetermined time elapses, and then performs a reciprocating wiping operation between the upper reversal position and the lower reversal position;
• wherein the stop position is an arm falling position at which the wiper arm in a locked back state falls without contacting an engine hood of the vehicle, and the wiper blade contacts the windshield.