DISTANCE MEASURING DEVICE

A distance measuring device is provided at low cost. The distance measuring device includes an avalanche photodiode 101, a TIA 103, a differential amplifier 104, damping circuits 105, 106, and an A/D converter 107. The avalanche photodiode 101 detects pulsed light that is reflected from an object to...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHINO, Ken'ichiro, MORITA, Hideki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Beschreibung
Zusammenfassung:	A distance measuring device is provided at low cost. The distance measuring device includes an avalanche photodiode 101, a TIA 103, a differential amplifier 104, damping circuits 105, 106, and an A/D converter 107. The avalanche photodiode 101 detects pulsed light that is reflected from an object to be measured. The TIA 103 is an amplifier circuit that converts electric current output from the avalanche photodiode 101 into a voltage signal. The differential amplifier 104 is arranged in a rear stage of the TIA 103 and differentially amplifies the voltage signal. The damping circuits 105, 106 are arranged in a rear stage of the differential amplifier 104 and convert the pulse signals from the differential amplifier 104 into signals with a damped oscillation waveform. These signals are A/D converted by the A/D converter 107. The signal path from the avalanche photodiode 101 to the A/D converter 107 allows a direct current signal to pass therethrough.