Optoelectronic distance measuring device
AssigneeSick AG
InventorJohann Hipp
Life of this patent
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Abstract
The invention relates to an optoelectronic distance measuring device comprising at least one transmitter unit to transmit pulsed electromagnetic radiation, at least one receiver unit associated with the transmitter unit to receive the reflected radiation and an evaluation unit to determine at least the distance of objects reflecting the transmitted radiation, with a series connection of load resistors being connected after the receiver unit and a separate amplifier being associated with each load resistor to amplify the subsidiary pulse produced at the respective load resistor from an incoming, successively attenuated received pulse.
Claims10
An optoelectronic distance measuring device, in particular a laser scanner, comprising
- at least one transmitter unit to transmit pulsed electromagnetic radiation;
- at least one receiver unit (1), in particular a photodiode, associated with the transmitter unit to receive the reflected radiation;
- and
- an evaluation unit (16, 4) to determine at least the distance of objects reflecting the transmitted radiation, in particular using the pulse transit time process,
- wherein a series connection of load resistors (5, 6, 7) is connected after the receiver unit (1) and a separate amplifier (8, 9, 10) is associated with each load resistor (5, 6, 7) to amplify the subsidiary pulse created at the respective load resistor (5, 6, 7) from an incoming, successively attenuated received pulse.
Dependencies are inferred from the claim text.