| 摘要 |
<p>An air-conditioner is provided to prevent human-body location recognition error due to rotation angle error of a stepping motor caused by backlash as a stopper holds a case to prevent the stepping motor from rotating. An air-conditioner comprises an air-conditioning part, an infrared sensor module, and a controller. The air-conditioning part sucks indoor air and discharge the air in a room. The infrared sensor module is installed at the air-conditioning part and comprises a substrate, an infrared sensor, a case(440), a stepping motor(464), a power transmission device(470), and a stopper(480). The infrared sensor is installed at the substrate. The case is coupled with the substrate. The power transmission device delivers the driving force of the stepping motor to the case. The stopper holds the rotation of the case and fixes the instrument origin of the stepping motor. According to the sensing result of the infrared sensor module, the controller controls the air-conditioning part.</p> |
