| 摘要 |
<p>There is provided a transmitter/receiver system for locating a misplaced object, such as eyeglasses (34), which includes a transmitter unit (10) which generates a signal when energized by power means such as a battery (20) and switch of a flashlight (26) and a receiver unit (30) on or disposed in the frame of the eyeglasses (34) having an antenna (36) responsive to the signal of the transmitter, a detector (38) and an electronic switch means (40) which changes state between an on status and an off status and which comprises a capacitor and a signal device coupled to an alarm oscillator (43) which is energized when the change occurs and when the capacitor discharges, thereby emitting an audible tone which attracts the user to the location of the eyeglasses (34). The receiver unit (30) is powered by means comprising a low frequency oscillator (46) which is continuously oscillating to intermittently power the receiver unit (30) and thereby save energy.</p> |
