Patent ID: 8903450

Claim:
A portable electronic device, comprising: a main body; a display mounted on the main body; and a distance measuring device comprising a first distance measuring member and a second distance measuring member, the first distance measuring member mounted in the main body, and electrically connected to the display, the first distance measuring member comprising a first signal emitting/receiving module and an arithmetic module electrically connected to the first signal emitting/receiving module, the second distance measuring member detachably mounted in the main body, and functioning with the first distance measuring member when carrying out a measurement, the second distance measuring member comprising a second signal emitting/receiving module and a control module electrically connected to the second signal emitting/receiving module; wherein the first signal emitting/receiving module is configured to receive an alignment signal emitted by the second signal emitting/receiving module before carrying out the measurement, emit a measuring signal to the second signal emitting/receiving module when measuring, receive a feedback of the measuring signal emitted by the second signal emitting/receiving module, and transmit the feedback of the measuring signal to the arithmetic module; the arithmetic module is configured to calculate a distance between the first distance measuring member and the second distance measuring member, the display displays a value of the distance; the second signal emitting/receiving module is configured to emit the alignment signal to the first signal emitting/receiving module before measuring, receive the measuring signal emitted by the first signal emitting/receiving module, and feed back the measuring signal to the first signal emitting/receiving module controlled by the control module.