초록 ▼

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 p

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.

대표청구항 ▼

1. 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 l

1. 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. The distance measuring apparatus as claimed in claim 1, wherein the distance measuring apparatus performs measurement again when the determining means determines that the received light waveform is incorrect. 3. The distance measuring apparatus as claimed in claim 2, further comprises a controller that changes an operation setting of at least one of the projector and the light receiver based on a latest result of the determination by the determining means before measurement is performed again. 4. The distance measuring apparatus as claimed in claim 2, wherein the warning data outputting means outputs the warning data when it is determined that the received light waveform is incorrect in a last time re-measurement of a set number of re-measurements. 5. 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; a storage medium for storing an output waveform of the light receiver therein; determining means for determining whether the output waveform stored in the storage medium is correct or incorrect; and warning data outputting means for outputting warning data responsive to a result of the determination when the determining means determines that the output waveform is incorrect.