Verification of a Pyroelectric Sensor Model using Measurements and an Optimization Algorithm

The objective of this paper is twofold. On the one hand showing that an equivalent electrical model can account appropriately and at the behavioural level, the physical phenomena involved in an electronic device; this is achieved by comparing the simulated response of the model with a measured response resulting from an actual prototype of the device under test. On the other hand, demonstrating the reliability of an optimization algorithm to estimate the parameters values of an equivalent electrical model using a succession of tests and adjustments so that the algorithm converges to and reaches the optimal solution. The optimization algorithm is a combination of two search methods: random and deterministic. In this paper, the optimization algorithm is described and results obtained from its application to a pyroelectric sensor equivalent electrical circuit model are presented and discussed.