| 摘要 |
PROBLEM TO BE SOLVED: To provide a time measurement device and sensor device, capable of suppressing degradation of the accuracy of measurement of a time to be measured. SOLUTION: In a time measurement circuit 71 of a control circuit 70 which is adopted in a laser radar device 1, the time T to be measured is acquired on the basis of the ratio of a digital value D1 to a digital value D2, and a reference time To. Moreover, time resolution Tr1 on the occasion of ratio calculation is set so as to be equal to a calculation error e1 on the occasion of the ratio calculation, and is set more finely than the time resolution of the delay element (gate delay) of a ring delay pulse generating circuit 81. COPYRIGHT: (C)2011,JPO&INPIT |
