A Correlation Method for Improving Temperature Sensors Measurements

The monitoring of hydro-energetic dams implies the permanently checking of the physical parameters that affect its safety. The precision of monitoring depends on the measurement accuracy of the electronic systems. The improper functioning conditions of the measuring system prompt for some sensors the appearance of nonsystematic error. The detection and analysis of these errors has been done. In this paper a method for verifying the correction of temperature measurement is shown. The adjustment of dates is obtained using a correlation method which likens the evolution of temperature from inside of building to a polynomial function. To verify this correction method, the data obtained after processing can be correlated with ambient temperature and with temperature measured by the neighboring sensors. After processing the above mentioned data a correlation value is obtained plusmn1. This value indicates that the sensor´s function has a very close following of the ambient temperature function and the neighboring sensor´s function. To improve the results obtained using the correlation method an additional filter is applied to the data source.