| 摘要 |
<p>A connection device (100) receives rotation pulses from a first fan and a second fan through a first connection section connected to the first fan and the second fan. The connection device (100) also counts the rotation pulses received from the first fan with a first counter and counts the rotation pulses received from the second fan with a second counter. Then, the connection device (100) receives the rotation pulses from the first fan and the second fan, and alternately outputs one of the rotation pulses received from the first fan and the rotation pulses received from the second fan according to a switching signal. If the connection device (100) cannot count either the output rotation pulses of the first fan or the output rotation pulses of the second fan, the connection device (100) outputs a signal indicating that either the first fan or the second fan is faulty to an electronic unit through a second connection section connected to the electronic unit.</p> |
