Accurate Frequency Counting Architecture for Vibrating Accelerometers on FPGA
Abstract
Onera has developed a quartz based Vibrating Beam Accelerometer (VBA) with frequency output. A new digital electronics architecture is introduced, which matches the accelerometer performances. To do so, the new architecture must detect a 3 10−10 relative frequency shift after 10 s of measurement. Experiments made assert the developed electronics reach such performances.