Hardware Support of the Periodic Component Detection Algorithm Based on Zero-Crossing

Paper proposes a hardware support of method for detecting a periodic component in a measurement signal, based on the calculation of the signal's zero-crossing numbers. On the basis of the considered method, an algorithm with low computational costs is proposed. The algorithm can be used to indicate of the progressing of resonant phenomena, to determine the presence of a carrier signal, and so on. The structures of the basic modules required for constructing hardware support devices of the proposed algorithm are proposed. The proposed modules are relatively easy to implement and can be easily manufactured for example using FPGA technology. An example of a block diagram of a detection device of periodicity with a known frequency is given. A description of the operation of the device is given and the main time diagrams are given.