Phased array radar for fluid sensing

A covered enclosure surface sensing device, comprising:

• a phased array radar sensor, with a 2-D antenna array on chip, capable of electronically steering a radar beam to create a three-dimensional image by scanning a field of view, adapted for placement in an upper portion of the covered enclosure, wherein at least a bottom of the enclosure is scanned;
• a processor, processing data from and to the phased array radar sensor;
• a motion detector;
• a communication module with a data link to the processor module, and coupled to a communication antenna directing communication away from the enclosure;
• a power source, providing power to the phased array radar sensor, processor, motion detector and communication module;
• and
• an environmental encasing, protecting the phased array radar sensor, processor, power source, communication module, and motion detector, the environmental encasing configured to be attached proximal to a bottom of a lid of the enclosure or an upper side surface of the enclosure,
• wherein after scanning, the phased array radar sensor operates to, if present, flexible surfaces and obstructions within the enclosure and a level of liquid or powder in a bottom of the enclosure, and if the enclosure contains an open channeled inlet and outlet, to measure a level of liquid in the inlet and outlet, a position of the inlet and outlet, and a speed of fluid in the inlet and outlet, wherein after the motion detector detects a threshold movement of the lid or surface sensing device, the phased array radar sensor performs a reorientation scan within the enclosure.