| 单词 | proximity sensor |
| 释义 | proximity sensorproximity sensor[präk′sim·əd·ē ′sen·sər]proximity sensorA device that detects the presence of an object in the vicinity. There are many types of sensors for myriad applications; however, they all work by emitting a signal and analyzing the changes in the signal that may be reflected back. In a smartphone, a proximity sensor is located by the phone speaker. It turns off the touch detection during a phone call; otherwise a person's ear would activate functions when pressed against the screen. See VR headset. |
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