Field of the Invention
The invention relates to a sensor and more particularly, to a liquid level sensor and a method for sensing a liquid level.
Description of Related Art
In a home appliance, if a liquid level display function is needed (for example, in a washing machine, a water dispenser, a pumping motor, or the like), a floating ball or a glass tube marked with a scale is usually used to achieve displaying an internal water level. When a liquid level is measured by using the aforementioned structure in the home appliance, the volume of the structure can be shrunk in a limited degree, and as a result, the overall volume cannot be lighter and thiner. Therefore, how to make the liquid level measurement apparatus lighter and thinner has become a subject to modern home appliances.