| 摘要 |
PURPOSE: A system and a method for measuring a thickness of ice in a towing tank using ultrasonic waves are provided to accurately and reliably measure a thickness of ice because a reaction speed control is possible according to a progressing speed of a model ship and an underwater ultrasonic sensor. CONSTITUTION: A system for measuring a thickness of ice in a towing tank using ultrasonic waves comprises an underwater ultrasonic sensor(110), an aerial ultrasonic sensor(120), and a central processing unit. The underwater ultrasonic sensor is arranged in the bottom of a towing tank(200). The aerial ultrasonic sensor is arranged in a model ship(210) contacting to ice(201) generated inside the towing tank or a towing trolley towing the model ship. The central processing unit converts signals received from the aerial ultrasonic sensor and underwater ultrasonic sensor into electronic signals. The central processing unit calculates an interval between the aerial ultrasonic sensor and underwater ultrasonic sensor and subtracts a sum of intervals between a surface of the ice and the aerial ultrasonic sensor and between the surface of the ice and underwater ultrasonic sensor so that a thickness of the ice is measured. |
