Non-contact type liquid level measuring system

The utility model relates to the technical field of sensors and measurement, in particular to a non-contact type liquid level measuring system. The non-contact type liquid level measuring system comprises a probe arranged on the upper edge of a liquid storage tank. The probe outputs collected analog video information to a processing module. The processing module comprises an image collecting card, an industrial personal computer or a computer. The image collecting card converts the collected analog video information into digital image information. The industrial personal computer or the computer processes the digital image information to extract a liquid level boundary function, and the liquid level height is obtained according to the liquid level boundary function. In the whole liquid level, the change of the liquid level boundary is minimal, and the boundary liquid level distribution is simulated through an equation according to the collected liquid level image information. After the position of the probe i