DISTANCE MEASURING METHOD AND APPARATUS

摘要

The present invention relates to a distance measuring method and apparatus. The distance measuring method according to the present invention counts the number of clock pulses from when optical pulses are irradiated until the irradiated optical pulses are received, counts the number of clock pulses from when the optical pulses are received until the optical pulses and the clock pulses are superimposed, and calculates the distance to an object by using the number of counted clock pulses, thereby accurately measuring the distance to the object by using a light source having a low frequency. Therefore, the present invention can reduce costs and power consumption. [Reference numerals] (610) Emit optical pulses & count the number of clock pulses; (620) Receive the optical pulses; (630) Stop counting the number of clock pulses and count the number of optical pulses and clock pulses; (640) Rising points coincide?; (650) Count the number of optical pulses and clock pulses; (660) Stop counting the number of optical pulses and clock pulses; (670) Calculate a macroscopic time; (680) Calculate a microscopic time; (690) Calculate a distance; (AA) Start; (BB) No; (CC) Yes; (DD) End