In this paper, testing a wireless strain sensing system under various gravity levels is presented. A low-power sensor node circuit was developed to convert mechanical strain into an electrical signal and a high-speed wireless interrogator was implemented to acquire the dynamic strain information. By implementing this system in a micro-gravity payload, accurate static and dynamic measurements were acquired in various gravity levels. The principle of operation of the wireless strain sensing system is first described followed by the hardware implementation description of the wireless vibration sensor node and wireless interrogator. Static tests were carried out by forcing compressive and tensile strains to an object for characterization and calibration. Dynamic testing was also carried out to test the sensor's frequency response once calibrated correctly. Testing results revealed that the strains experienced by the mechanical structures saw no change under various gravity level situations.
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