Implement sensor reliability improvements and error handling #2
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- Add sensor criticality system with configurable timeouts: * Critical sensors (cloud detection): 5min tolerance, assume dangerous if failed * Non-critical sensors (SQM, rain, UPS): 2-3min tolerance, assume safe if failed - Fix NoneType comparison crashes in weather safety evaluation - Fix SQL syntax errors from empty sensor values (convert to NULL) - Add comprehensive error handling and graceful degradation - Update documentation with troubleshooting guide This prevents single sensor failures from making the observatory inoperable while maintaining safety for critical cloud detection systems. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Replace empty values (::) with 'U' (unknown) before passing to rrdtool - MySQL pipeline still receives original data for failure tracking - Prevents 'Cannot convert empty string to float' RRD errors 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Use while loop to handle multiple consecutive empty values - Converts N:::-95.08 to N:U:U:-95.08 properly - Ensures RRDtool gets the expected number of data points 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
- Add debug logging to see what values are being returned from database - Will help identify why sensor data appears missing when it exists in DB 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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Summary
This PR implements a comprehensive sensor reliability system that prevents single sensor failures from making the observatory inoperable while maintaining safety for critical systems.
Changes Made
🎯 Sensor Criticality System
🛠️ Error Handling Improvements
TypeError: unorderable types: NoneType() >= float()crashesN:::-95.08)check_sensor_data_age()function for data freshness validation📝 Enhanced Documentation
collector/CLAUDE.mdwith system architectureProblem Solved
Previously, any sensor failure would cause:
or SQL errors:
This made the entire observatory inoperable due to single sensor issues.
Test Plan
🤖 Generated with Claude Code