STRUCTURE OF A WATER LEVEL SENSOR CAPABLE OF ACCURATE LEVEL MEASUREMENT IN SPITE OF CONTAMINATION OF A MEASURING TARGET

摘要

PURPOSE: A structure of a water level sensor is provided to measure level of various kinds of solution having different permittivity.;CONSTITUTION: A structure of a water level sensor comprises a capacitance sensor and a signal processing unit. The capacitance sensor comprises a first electrode and a second electrode. The first electrode and second electrode are formed on multiple sections to be separated as a fixed distance. The signal processing unit is electrically connected to the first electrode and the second electrode. The signal processing unit detects the water level according to a sensing signal which is generated base on the change of electrostatic capacity at the capacitance sensor. The signal processing unit outputs a detection signal.;COPYRIGHT KIPO 2012