Vibration-Based Diagnostics
Vibration Sensor Network for Equipment Health
The vibration sensor network is an array of 50 microelectromechanical systems accelerometers mounted directly to rotating and reciprocating machinery to identify bearing wear, imbalance, and structural looseness. Weighing 2 kg and consuming 5 W of power, the instrumentation samples at 20 kHz and employs fast Fourier transform spectral analysis to isolate mechanical fault signatures. Unshielded lunar radiation necessitates radiation-tolerant analog-to-digital converters to prevent signal degradation and component failure, enabling continuous baseline trending over a 20-year operational lifetime and a 200,000-hour mean time between failures.
Vibration sensor network on rotating + reciprocating equipment with FFT-based fault signature detection (bearing wear, imbalance, looseness).
Purpose
Vibration sensor network on rotating + reciprocating equipment with FFT-based fault signature detection (bearing wear, imbalance, looseness).
Context
Child of L2-MNT-PRED within the Lunar Ark system
Principles
- ▸MEMS accelerometers at equipment mounting points
- ▸FFT spectrum analysis identifies bearing-fault frequencies
- ▸Order analysis for variable-speed equipment
- ▸Long-mission baseline trending
- ▸ML-augmented anomaly detection
Typical implementations
- ▸Industrial vibration monitoring (terrestrial)
- ▸Aerospace bearing-fault detection
- ▸Mining equipment health
Lunar considerations
- ▸Long-life MEMS sensors
- ▸Rad-tolerant ADCs
- ▸ML model evolves with experience
Specifications
Functional
| primary function | Vibration sensor network on rotating + reciprocating equipment with FFT-based fault signature detection (bearing wear, imbalance, looseness). |
| sensors | 50 |
| sampling khz | 20 |
Physical
| mass kg | 2 |
| materials | MEMS accelerometers, Rad-hard ADC |
| vacuum compatibility | True |
Operational
| power consumption w | 5 |
| thermal range c | -40, 70 |
| lifetime years | 20 |
| mtbf hours | 200000 |
Interfaces
Provides
- Vibration trends
Requires
- Sensors (~5 W)
Cite this entry
Lunar Ark Codex. "Vibration-Based Diagnostics" (L3-MNT-PRED-VIB). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-MNT-PRED-VIB
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.