A telemetring technique on deformation of large tower
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Abstract:
This paper describes a telemetring technique on deformation of large Electrical Power Equipment. We install n radio beacons apart Δ Hi each other at large structure. The carriers of n beacons are same but modulated by different orthogonal PN codes. So the telemetring equipment can divide the carriers of n beacons. The phase detectors measure the phase difference between the ith carrier and ( i -1)th carrier Δ θi(i=2, 3…n) . The corresponding deformations are Δ Li =Δ θi/360×λ(i=2, 3…n) .The deformation curve can be deduced from Δ Li and Δ Hi(i=2, 3…n) . The method to eliminate the interference between the modulated carriers is presented .The simulation test is conducted and the result of the simulation proves the effectiveness of the proposed technique.
