US 6,587,185 B1 · Distance measuring apparatus

Abstract

In a distance measuring apparatus 1 having a projector 10 that projects pulse light P outside and a light receiver 20 that receives the pulse light being reflected in the outside and performs photoelectric conversion, and outputting measurement data DL responsive to a time Tf from the transmission point of time to the reception point of time of the pulse light, the following are provided: determining means 311 for determining whether a received light waveform DP is correct or includes at least two incorrect waveforms based on an output signal SP of the light receiver 20; and warning data outputting means 312 for outputting warning data DE responsive to the result of the determination when the determining means 311 determines that the received light waveform DP is incorrect.

Claims5

Dependent claims

A distance measuring apparatus outputting measurement data responsive to a time from a transmission point of time to a reception point of time of pulse light, comprising:

a projector that projects pulse light outside the distance measuring apparatus;
a light receiver that receives the pulse light reflected from an object and returned to the distance measuring apparatus;
determining means for determining whether a received light waveform of the received light is correct or incorrect based on an output signal of the light receiver, determining that the received light waveform is incorrect includes determining that at least two received light waveforms are incorrect;
and
warning data outputting means for outputting warning data responsive to a result of the determination when the determining means determines that the received light waveform is incorrect.

2 more elements

Dependencies are inferred from the claim text.

Distance measuring apparatus

Life of this patent

Distance measuring apparatus

Life of this patent

Abstract

Claims5