| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle detection sensor which uses a microwave to be able to flexibly cope with a sensor installation condition in a parking area and can reduce an influence thereon of rain as much as possible. ! SOLUTION: A vehicle detection sensor 1 includes a microwave module 4 and a radome 5 and detects the presence or absence of a vehicle parked in a prescribed parking area 3 by an FMCW system which calculates a distance to a parked vehicle C on the basis of a beat frequency signal between a microwave transmission signal and a reception signal reflected by the parked vehicle C. Blocking members 10 projecting in a transmission direction of the microwave are provided on both the right side and the left side, both the upper side and the lower side, or both the right side and the left side and both the upper side and the lower side of the module so as to limit a detection range angle with the microwave in accordance with the position of the sensor 1 and the size of the parking area, an |
