| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a relay control device capable of further reducing a margin of a drive electric current and a consumption power of a relay control device than in the case where a target value is kept constant regardless of a vehicle state by monitoring the vehicle state, changing a target value depending on results of monitoring, and causing a drive electric current flowing in a controlled coil to be optimal depending on the vehicle state. <P>SOLUTION: A drive transistor Q1 is provided in series with a controlled coil L1 of a control target relay 8. A coil voltage detection part 10 detects a coil voltage V<SB POS="POST">COIL</SB>between both ends of the drive transistor Q1. A drive command part 12 creates a control signal of the drive transistor Q1 so that the coil voltage V<SB POS="POST">COIL</SB>equals a target value V<SB POS="POST">REF</SB>. A control part 14 monitors the state of a forklift 1 with a relay 8 mounted thereon, and changes the target value V<SB POS="POST">REF</SB>depending on monitored results. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
