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ScottW514
f92147093e
Adds the design matrix and its supporting tools, and records in BRINGUP what the 60-run matrix overturned: sub-40-percent duty mimics flow (three of five dead-pump trials looked healthier than a working pump), the operating point and threshold now rest on 25 pooled observations, periodic re-checks are thermally free with the fans running, and the settle gate closes a bench-proven miss. Also records what is NOT yet validated - warm-loop baselines and behaviour under laser heating - as first-light commissioning items.
23 lines
631 B
Python
23 lines
631 B
Python
#!/usr/bin/env python3
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"""Board-side coolant sampler: prints 'elapsed,raw_down,raw_up' lines.
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Usage: flow_sampler.py <duration_s> <interval_s>
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Kept on the board so sampling cadence is not at the mercy of ssh
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round-trip latency."""
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import sys
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import time
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dur = float(sys.argv[1])
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iv = float(sys.argv[2])
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t0 = time.time()
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while True:
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el = time.time() - t0
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if el > dur:
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break
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with open('/sys/glowforge/pic/water_temp_1') as f:
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r1 = f.read().strip()
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with open('/sys/glowforge/pic/water_temp_2') as f:
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r2 = f.read().strip()
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print('%.2f,%s,%s' % (el, r1, r2), flush=True)
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time.sleep(iv)
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