| 摘要 |
PROBLEM TO BE SOLVED: To provide a range measurement system capable of stably synchronizing a light-emission timing with a light-reception timing and accurately measuring a range to a target.SOLUTION: A light-emission reference signal Pe2 with timing adjusted by a first delay time control circuit 44 is input into a light emission drive part 32 as a timing adjustment signal Pe3. The light-emission reference signal Pe2 delayed by a second delay time control circuit 46 is output as an offset signal Pe5. The offset signal Pe5 and a light emission timing signal Pe4 from the light emission drive part 32 are input into a timing-correcting phase comparator 48 so that it outputs a phase comparison result S1. The phase comparison result S1 is input into a timing-correcting control logic circuit 50 so that it outputs a delay adjustment signal S3 based on the phase comparison result S1. The delay adjustment signal S3 is input into the first delay time control circuit 44 to adjust the timing of the light-emission reference signal Pe2. |
