An infrared thermal image acquisition system for intra-vehicle applications

In this paper, we present an infrared thermal image acquisition system developed for intra-vehicle applications. This system is based on an uncooled microbolometer sensor matrix. First, we design an electronic board to control the sensor. A special lens is developed with a wide field of view. Then, the image acquisition system is developed on a FPGA (Field-Programmable Gate Array) based soft-core microcontroller. We realize the system calibration using controlled temperature surface. We implement the calibration algorithm and present calibration results. Measurement campaign is conducted in a vehicle. Measurement results show the possibility to cover all the passenger's in the vehicle and to measure their temperature.