Liquid level time period fingerprint model identification method and system

The invention provides a liquid level time period fingerprint model identification method and system, and the method comprises the steps: S1, setting the data collection frequency of a liquid level instrument monitoring device, installing and deploying the liquid level instrument monitoring device in a designated sewage inspection well, and monitoring and collecting the liquid level value under the inspection well in real time; s2, the inspection well time period extreme value is calculated according to the accumulated liquid level numerical value; s3, forming a liquid level time period fingerprint model of the inspection well through the time period extreme value; s4, the corrected maximum value and the corrected minimum value of each time period in one day are calculated, a liquid level time period fingerprint model of the inspection well is formed, and the model serves as a reference basis to assist in abnormal state recognition of the liquid level of the inspection well; and S5, a liquid level time period