Distributed MEMS devices time synchronization methods and system

摘要

A method is provided for time synchronization in a MEMS (MicroElectroMechanical system) based system having a MEMS processor and a plurality of MEMS devices. In a specific embodiment, the method includes, in the MEMS processor, transmitting a synchronization signal to the plurality of MEMS devices and saving a local time upon transmitting the synchronization signal. The MEMS processor also receives sampled data and time information from the plurality of MEMS devices, when the data and information become available. The method also includes, in one or more of the MEMS devices, receiving the synchronization signal from the MEMS processor and storing a local time upon receiving the synchronization signal. The MEMS device also performs a sensing operation and stores sampled sense data and sense time information.

主权项

1. A method of time synchronization in MEMS (MicroElectroMechanical system) based system having a MEMS processor and a plurality of MEMS devices, the method comprising:
in one or more of the MEMS devices,
receiving a synchronization signal from the MEMS processor;storing a local time upon receiving the synchronization signal;performing a sensing operation to sample sense data; andstoring the sampled sense data and sense time information; in the MEMS processor,
transmitting the synchronization signal to the plurality of MEMS devices;saving a local time upon transmitting the synchronization signal;receiving the stored local time upon receiving the synchronization signal from one or more of the MEMS devices;receiving sampled sense data, and sense time information from one or more of the MEMS devices;determining when each sampled sense data is captured relative to a local time in the MEMS processor and the local time of other MEMS device in the system;aligning sampled sense data from two or more of the plurality of MEMS devices; andusing aligned sampled sense data to determine sample rate and jitter of each of the plurality of the MEMS devices.