`cold-chain-monitor`

:::warning [UNTESTED] — v0.9 paper-correct The cold_chain core is host-unit-tested on native_sim/native/64; the full app runs end-to-end on native_sim with synthetic environment data covering every state. No model ships (stub + deterministic classifier/fallback). HiL with a real BME280 + a trained model is bench-gated. :::

A pharma/food cold-chain integrity monitor: sample a BME280 T/RH/P sensor on a slow logging cadence, compute standards-backed metrics (temperature-excursion time, Mean Kinetic Temperature, dewpoint), classify the integrity state, and emit an AI anomaly score. The environmental edge-AI vertical.

Source: examples/ai/cold-chain-monitor/.

Honest scope

A reference cold-chain logger. MKT, dewpoint, and excursion-time are the real, recognized metrics; thresholds are configurable per product. Not a certified GxP / 21-CFR-Part-11 data logger — no validated audit trail, no calibration traceability, no tamper-proof storage.

Standards-backed metrics: MKT (Mean Kinetic Temperature, ICH Q1A / USP <1079>) is the single temperature delivering the same cumulative thermal stress as the fluctuating profile (MKT ≥ arithmetic mean, so a brief hot spike counts for more than its duration); dewpoint (Magnus) flags condensation / mould risk when ambient T nears it.

Pipeline

BME280 (I2C) --window--> cold_chain (mean/min/max, MKT, dewpoint, excursion)
  -> cc_classify (OK / TEMP_EXCURSION / MKT_EXCEEDED / CONDENSATION_RISK)
  -> <alp/inference.h> anomaly score (deterministic fallback) -> CC record

`board.yaml`

som:
  sku: E1M-AEN701

preset: e1m-evk
supported_boards:
  - e1m-evk
  - e1m-x-evk

pins:
  - { e1m: E1M_I2C0, macro: EVK_I2C_BUS_SENSORS, doc: "BME280 environment sensor bus" }

cores:
  a32_cluster:
    os: "off"
  m55_hp:
    app: ./src
    inference:
      default_arena_kib: 64
    libraries:
      - tflite_micro
    peripherals:
      - i2c                   # BME280 link

chips:
  - bme280                    # temperature / humidity / pressure

diagnostics:
  log_level: info

Flip som.sku to E1M-V2M101 for the DEEPX DX-M1 path.

Expected output

# CC,t_s,state,temp_c,rh_pct,dewpoint_c,mkt_c,excursion_min
CC,256.0,OK,5.0,50.0,-4.6,5.0,0.0
CC,768.0,CONDENSATION_RISK,5.0,95.0,4.3,5.0,0.0

Honest scope​

Pipeline​

board.yaml​

Expected output​

See also​

Honest scope

Pipeline

`board.yaml`

Expected output

See also