RADAR LEVEL DETECTOR AND METHOD FOR LEVEL MEASUREMENT OF BULK PRODUCTS IN TANKS

摘要

The present invention provides improved performance characteristics due to high reliability in measurements in tanks for a range of bulk products, regardless of the operational process geometric shape, including measurement in explosive environments. Essence of the proposed method amounts to the fact that, apart from transmission in predisposed direction and receipt of reflected from the surface of studied product radar signals, whose frequency varies linearly, measurement of frequency difference between emitted and reflected signals, isolation of valid signal and distance calculation, additionally electronic scanning is performed of the microstrip antenna directional pattern, emit and receive reflected radar signals for various angular positions of the directional pattern, measure reflected signal strength, perform spectral processing of the reflected signals, on the basis of which and entered geometric parameters of the measured tank is calculated optimal angular position of the directional pattern, generate control signal for the microstrip antenna directional pattern.

主权项

1. A method of measurement for bulk products which includes transmission in the predetermined direction and receipt of radar signals, frequency of which varies linearly, measurement of frequency difference between transmitted and reflected from the studied product surface signal, isolation of the valid signal and distance calculation; this method is set apart by electronic scanning of the microstrip antenna directional pattern, transmission and receipt of reflected radar signals for various angular positions of the directional pattern, measurement of the reflected signal strength, spectral processing of reflected signals on the basis of which and entered geometric parameters of the measured tank is calculated optimal angular position of the directional pattern, generation of the control signal for the microstrip antenna directional pattern.