CALIBRATION PROCEDURE FOR PENDULUM POSITION MEASUREMENT
Abstract: A calibration procedure for pendulum movement is described. Such a pendulum is used in the monitoring structural integrity of dams. The movement detection of the pendulum is made with an optoelectronic measurement instrument. The calibration procedure uses a lot of measurements taken for reference positions in a grid pattern. For each reference position multiple measurements are taken with different LEDs. An algorithm that interpolates the grid measurements is presented. The algorithm solves the problem that arises when between two grid measurements another LED is used. This changing of LED between two grid points may introduce discontinuities that affects the interpolation. The presented algorithm makes the interpolation without being affected by the changing of LED.
Keywords: calibration, pendulum, dam, measurement, grid, optical.
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