Omron exhibited a microwave radar using the 24GHz band to be used as a sensor in "pre-crash safety system," which controls the brake detecting the distance of obstacles around a vehicle, at the 40th Tokyo Motor Show (open to the public Oct 27 to Nov 11, 2007).
Compared with milliwave radars that use bands above 70GHz, "the price is roughly 1/5," company's staffer said.
The detection range is between 0.5m and 15m, while the detection angle is ±30. The detection range is shorter than milliwave radars that can detect the range exceeding 100m. The sensor is intended for low-priced vehicles equipped with a low-speed following function.
Microwave radars are used as sensors for detecting people near automatic doors, for example. Therefore, the elements of peripheral circuits "can be purchased for much lower prices" than those for milliwave radars, the staffer said.