Sonic level measuring method

Details Sonic level measuring method Sonic level measuring method

G - Physics

01

F

G01F 23/296 (2006.01) G01S 7/523 (2006.01) G01S 7/52 (2006.01) G01S 7/521 (2006.01)

Patent

CA 2329944

A sonic level measuring method comprises steps of disposing N sonic receivers 1,5 2,5 3,.cndot..cndot..cndot.5n at a constant interval ~ toward a water surface along the longitudinal portion of a waveguide tube, oscillating sonic pulses to detect the number N i of the sonic receivers and computing an interval L i = (N i - 1)~ between a sonic receiver 5i that is positioned on the original point for the water level measurement, measuring a transit time t1 = Image that it takes for the sonic pulse to be transited between a sonic receiver 5i-1 and the sonic receiver 5 i, measuring a transit time t2 = Image from the receiving moment of the advancing sonic pulse until the sonic pulses are reflected on the water surface and then again received by the sonic receiver 5i , computing an interval .DELTA.L between the sonic receiver 5i and the water surface, adding the interval .DELTA.L to L i and obtaining a distance Lx = L i + .DELTA.L thereby to measure the water level.

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