Research and Diagnostics Laboratory of Pressure Resistive Sensors for Composites

Abstract

The use of sensors prevents the shortened service life, wear and tear, and decreased accuracy due to degradation during operation. For sensors prone to inaccuracy, a “sensor-device-program” diagnostic assembly has been created. Such a circuit is capable of autonomous diagnosis, calibration and evaluation, up to and including autonomous recalibration of sensors. The diagnostic device also has a shock test function. The purpose of the operation is to deliberately increase the life and accuracy of the sensor under test. The diagnostic device is designed for testing under laboratory conditions and verifies the correctness of the diagnostic algorithm. The result of diagnostics is a report on the current state of the sensor and the changes compared to the past states. The current state includes estimates of accuracy, range, sensitivity or error parameters such as strain constant, maximum Po value and others. Thus, the degradation of selected parameters can be monitored and a mathematical calculation of the results can be applied to possibly improve/correct the sensor errors. By recording force levels, it will be known what force was applied to the sensor during the measurement and thus protects against damage from overloading. The maximized life is achieved through a combination of the accuracy control, calibration performance and error estimation. As a result, the conventional industrial sensor will be a reliable tool for industrial measurements, not just laboratory measurements.