| 摘要 |
The device for the acoustic detection of liquid levels is based on the sound emitted in a container upon being filled with a liquid; the data related to the sound contains information directly proportional to the liquid level in the container. As the liquid level is rising inside the container, the frequency of the sound is increased due to the Doppler Effect, and the amplitude of the sound emitted is reduced since there is less space in the container for generating echo. The device for the acoustic detection of liquid levels comprises: a cubic-shaped carcass, which houses a dispenser in the upper portion thereof and a sensing means; where said dispenser is connected to a motor pump which is simultaneously connected to a storing tank that provides the liquid with which a container will be filled, this tank being located in the inner portion of the carcass and under the dispenser outlet; the sensing means is connected to a control means which will evaluate the frequencies obtained by t he sensing means and the frequencies previously established of the desired levels in the memory and will manage the operation of the motor pump through the control means. The present invention is intended to fill a container of unknown volume at a desired level without having previous data of the volume of the same, a microphone being used for listening the sound emitted by the container, which value is directly proportional to the liquid level in the container. |
