A VHDL Based Controller Design for Non-contact Temperature and Breathing Sensors Suitable for Crib

Continuous monitoring of vital signs has the potential of improving infant health care and reduce SIDS (sudden infant death syndrome). With the emergence of micro-sensors and wireless technology can enable change in the conventional health care systems, replacing it with wearable and non-contact based wireless health care system. In this paper, an infrared non-contact temperature sensor, and a microphone based breathing sensor are used to detect vitals sign of an infant. Interfacing different sensors and acquiring and processing data in real time is a challenging task and requires a dedicated hardware. Field programmable gate array (FPGA) based technology has become the most widely used technique for real-time application. The HDL (hardware description language) based FPGA implementation of necessary drivers and interfacing hardware are proposed in this paper. With the help of necessary simulations and experimental results, the functionality and accuracy of the proposed system are justified.