| 摘要 |
Disclosed are a method for compensating for a signal of an ultrasonic sensor and a signal compensation device using the same, which can robustly detect received signals in various atmospheric conditions. The device for compensating for a signal of an ultrasonic sensor by using an absorption coefficient according to the present invention comprises: a reference sound pressure reduction curve computing unit for computing a reference absorption coefficient based on the input reference atmospheric conditions (temperature, atmospheric pressure, humidity) and computing a reference sound pressure reduction curve according to distance by using the reference absorption coefficient; a current sound pressure reduction curve computing unit for computing the current absorption coefficient based on the current temperature, humidity, and atmospheric pressure collected by sensors and computing the current sound pressure reduction curve according to distance by using the current absorption coefficient; and a sound pressure correction ratio computing unit for computing a sound pressure correction ratio according to distance by the ratio of the reference sound pressure reduction curve to the current sound pressure reduction curve. |
