Escape system for a sunken car and ultrasonic component

An ultrasonic component, at least comprising:

• a case, having a reception space therein, at least one side of the case has at least one hole, and the case further has at least two masking plates on two sides of the hole, wherein the masking plate and the side of the case have an angle therebetween;
• and
• an ultrasonic module, disposed in the reception space, the ultrasonic module comprises an ultrasonic signal transmitting unit, a first receiving unit electrically connected to the ultrasonic signal transmitting unit, a second receiving unit electrically connected to the ultrasonic signal transmitting unit, a calculating unit electrically connected to the first receiving unit and the second receiving unit, and a signal transmitting unit electrically connected to the calculating unit;
• the ultrasonic signal transmitting unit and the first receiving unit are disposed on two opposite sides of the reception space, the ultrasonic signal transmitting unit is disposed on a top part of the reception space, and the first receiving unit is disposed on a bottom part of the reception space;
• the ultrasonic signal transmitting unit and the second receiving unit are disposed on the same side of the reception space, the ultrasonic signal transmitting unit and the second receiving unit are disposed on the top part of the reception space;
• the ultrasonic signal transmitting unit emits an ultrasonic, and the ultrasonic is then divided into a penetrating wave and a reflected wave, the first receiving unit receives the penetrating wave, and the second receiving unit receives the reflected wave, wherein when the ultrasonic signal transmitting unit emits the ultrasonic, the ultrasonic signal transmitting unit simultaneously transmits a speed of the ultrasonic to the first receiving unit and the second receiving unit, and a speed of the reflected wave is identical to the speed of the ultrasonic;
• when the first receiving unit determines that a speed of the penetrating wave is larger than the speed of the ultrasonic, the calculating unit compares the speed of the penetrating wave transmitted by the first receiving unit in a reference database of an obstacle-speed relation built in the calculating unit, and when the calculating unit determines that the speed of penetrating wave approaches an estimated penetrating wave speed of the reference database of the obstacle-speed relation, the calculating unit determines a type of an obstacle corresponding to the estimated penetrating wave speed of the reference database of the obstacle-speed relation;
• wherein when the calculating unit firstly determines the obstacle is nota solid water, a liquid water and a gas water, and next determines a type of another obstacle is the liquid water or a thickness of a water film of the liquid water in the bottom part of the reception space is larger than a thickness of a sunken water film built in the calculating unit, the calculating unit generates and transmits a car sunken signal to the signal transmitting unit, and the signal transmitting unit transmits the car sunken signal via a wireless or wire manner;
• or alternatively, when the calculating unit firstly determines the obstacle is the solid water or the gas water, and next determines the thickness of the water film of the liquid water in the bottom part of the reception space is larger than the thickness of the sunken water film built in the calculating unit, the calculating unit generates and transmits the car sunken signal to the signal transmitting unit, and the signal transmitting unit transmits the car sunken signal via the wireless or wire manner;
• or alternatively, when the calculating unit firstly determines the obstacle is the liquid water and the water film is formed in the bottom part of the reception space, records the thickness of the water film as an initial water film thickness, and next determines the thickness of the water film increased from the initial water film thickness is larger than the thickness of the sunken water film built in the calculating unit, the calculating unit generates and transmits the car sunken signal to the signal transmitting unit, and the signal transmitting unit transmits the car sunken signal via the wireless or wire manner.