AN APPARATUS FOR REMOTE CONTROL OF FLOOD GATE, AN ALARM OF ERRORS BREAKING OUT AND PROTECTING A FLOOD GATE-WINCH

摘要

An apparatus for remotely controlling a water gate, raising an alarm for malfunction, and protecting a winch is provided to prevent a winch from being damaged by preventing the overload of a motor through a slip unit in case the water gate cannot be completely opened or closed as various foreign substances and obstacles exist at a lower or upper part of the water gate. A control part(100) in an apparatus for opening and closing a water gate comprises a receiver(22), an amplifier(23), an A/C converter(24), a timer(26), and an annunciator(30). The receiver(22) receives various information related to opening and closing of the water gate through an antenna(21) from a wireless remote controller(200). The amplifier(23) amplifies output signals of the receiver(22). The A/C converter(24) converts water gate-associated information, outputted from the amplifier(23) in the form of analog signals, into digital signals and transfers them to a microcomputer(25). When either an upper limit switch(18) or a lower limit switch(19) works as opening or closing operation of the water gate starts, the timer(26) counts a preset time. In case the other limit switch doesn't work within the preset time, the timer(26) makes the microcomputer(25) inform an abnormal state through the annunciator(30). In case opening or closing operation of the water gate is not made within the preset time, the annunciator(30) displays the fact.