Flow sensor and flow sensor system for detecting the flow rate of a crop material and method of measuring the flow rate of a crop material within a duct

摘要

"FLOW SENSOR AND FLOW SENSOR SYSTEM TO DETECT THE FLOW FLOW OF A HARVEST MATERIAL AND METHOD OF MEASURING THE FLOW LEAK OF A HARVEST MATERIAL". A flow sensor for use on a harvester is described. The flow sensor has a microwave transceiver for transmitting a microwave signal and for receiving a reflected microwave signal, a phase mixer electrically connected to the microwave transceiver to combine the transmitted microwave signal and the reflected microwave signal and to emit a Doppler signal, a quadrature mixer electrically connected to the microwave transceiver to combine the transmitted microwave signal and a delayed reflected microwave signal to emit a quadrature Doppler signal, and an electronic circuit electrically connected to the in-phase mixer and quadrature mixer and which has a flow rate output signal.