531 lines
22 KiB
Python
531 lines
22 KiB
Python
import time, math, board, smbus2, serial, psutil, pynmea2, bme680
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import adafruit_ltr390, threading, os, statistics, requests
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from datetime import datetime, timezone
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from collections import deque
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from dotenv import load_dotenv
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from pathlib import Path
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BASE_DIR = Path(__file__).resolve().parent.parent
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def cfg():
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load_dotenv(BASE_DIR / '.env', override=True)
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load_dotenv(BASE_DIR / '.env.local', override=True)
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return {
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'LATITUDE': float(os.getenv('LATITUDE', '0.0')),
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'LONGITUDE': float(os.getenv('LONGITUDE', '0.0')),
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'ALTITUDE': float(os.getenv('ALTITUDE', '0.0')),
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'DB_HOST': os.getenv('DB_HOST', 'http://localhost:8428'),
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'GPS_PORT': os.getenv('GPS_PORT', '/dev/ttyS0'),
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'GPS_BAUD': int( os.getenv('GPS_BAUD', '9600')),
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'GAS_REFERENCE': int( os.getenv('GAS_REFERENCE', '250000')),
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'PRESSURE_TREND_WINDOW': int( os.getenv('PRESSURE_TREND_WINDOW', '60')),
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'LUNA_CAL_SAMPLES': int( os.getenv('LUNA_CAL_SAMPLES', '20')),
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'LUNA_MAX_DIST_CM': int( os.getenv('LUNA_MAX_DIST_CM', '800')),
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'LUNA_MIN_DEPTH_CM': int( os.getenv('LUNA_MIN_DEPTH_CM', '2')),
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'AS3935_ADDR': int( os.getenv('AS3935_ADDR', '0x03'), 16),
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'AS3935_NOISE_FLOOR': int( os.getenv('AS3935_NOISE_FLOOR', '5')),
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'AS3935_WATCHDOG': int( os.getenv('AS3935_WATCHDOG', '3')),
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'AS3935_SPIKE_REJ': int( os.getenv('AS3935_SPIKE_REJ', '7')),
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'LOOP_INTERVAL': float( os.getenv('LOOP_INTERVAL', '1.0')),
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'FLOOD_TEMP_THRESHOLD': float( os.getenv('FLOOD_TEMP_THRESHOLD', '10.0')),
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'SLUSH_TEMP_THRESHOLD': float( os.getenv('SLUSH_TEMP_THRESHOLD', '0.0')),
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'SNOW_STRENGTH_MIN': int( os.getenv('SNOW_STRENGTH_MIN', '700')),
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'SEISMIC_NOISE_FLOOR': float( os.getenv('SEISMIC_NOISE_FLOOR', '0.02')),
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'TEMP_CALIBRATION': float( os.getenv('TEMP_CALIBRATION', '0.0')),
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'VISIBILITY_MAX': float( os.getenv('VISIBILITY_MAX', '50.0')),
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'CLOUD_SUN_MIN_ELEV': float( os.getenv('CLOUD_SUN_MIN_ELEV', '5.0')),
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'CLOUD_LUX_CLEAR_SKY': float( os.getenv('CLOUD_LUX_CLEAR_SKY', '100000.0')),
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'CLOUD_HUMIDITY_WEIGHT': float( os.getenv('CLOUD_HUMIDITY_WEIGHT', '0.3')),
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}
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# ── VictoriaMetrics ───────────────────────────────────────────────────────────
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def write(c, fields, collection='weather'):
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field_str = ','.join(
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f"{k}={'true' if v is True else 'false' if v is False else v}"
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for k, v in fields.items() if v is not None
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)
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if not field_str: return
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requests.post(f"{c['DB_HOST']}/write", data=f"{collection} {field_str}", timeout=2)
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# ── Helpers ───────────────────────────────────────────────────────────────────
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def try_init(fn, name):
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try:
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r = fn()
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print(f" ✅ {name}")
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return r
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except Exception as e:
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print(f" ❌ {name}: {e}")
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return None
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def try_read(fn):
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try: return fn()
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except: return None
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def s16(v): return v - 65536 if v > 32767 else v
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try: bus = smbus2.SMBus(1)
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except: bus = None; print("[I2C] SMBus init failed")
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try: i2c = board.I2C()
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except: i2c = None; print("[I2C] board.I2C init failed")
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# ── BME680 ────────────────────────────────────────────────────────────────────
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pressure_buffer = deque(maxlen=60)
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def init_bme():
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sensor = bme680.BME680(bme680.I2C_ADDR_SECONDARY)
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sensor.set_humidity_oversample(bme680.OS_2X)
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sensor.set_pressure_oversample(bme680.OS_4X)
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sensor.set_temperature_oversample(bme680.OS_8X)
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sensor.set_filter(bme680.FILTER_SIZE_3)
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sensor.set_gas_status(bme680.ENABLE_GAS_MEAS)
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sensor.set_gas_heater_temperature(320)
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sensor.set_gas_heater_duration(150)
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sensor.select_gas_heater_profile(0)
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return sensor
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def heat_index(tc, rh):
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tf = tc * 9/5 + 32
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if tf < 80: return round(tc, 2)
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hi = (-42.379 + 2.04901523*tf + 10.14333127*rh
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- 0.22475541*tf*rh - 0.00683783*tf**2
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- 0.05481717*rh**2 + 0.00122874*tf**2*rh
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+ 0.00085282*tf*rh**2 - 0.00000199*tf**2*rh**2)
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return round((hi - 32) * 5/9, 2)
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def absolute_humidity(tc, rh):
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return round((6.112 * math.exp((17.67*tc)/(tc+243.5)) * rh * 2.1674) / (273.15+tc), 3)
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def vpd(tc, rh):
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es = 0.6108 * math.exp((17.27*tc)/(tc+237.3))
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return round(es - (rh/100)*es, 3)
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def gas_to_aqi(gas_ohms, humidity, gas_reference):
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if gas_ohms is None: return None
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gas_score = min(gas_ohms / gas_reference, 1.0) * 75
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hum_score = 25 - abs(humidity - 40) * 0.5
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quality = min(max(gas_score + hum_score, 0), 100)
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aqi = round((1 - quality / 100) * 500)
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return aqi
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def sea_level_pressure(pressure_hpa, alt_m):
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if alt_m is None: return None
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return round(pressure_hpa / math.pow(1 - (alt_m / 44330.0), 5.255), 2)
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def get_pressure_trend(window):
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if pressure_buffer.maxlen != window:
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pressure_buffer.__init__(window)
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if len(pressure_buffer) < 2: return None
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delta = pressure_buffer[-1] - pressure_buffer[0]
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return round(delta, 2)
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def read_bme(c, sensor, alt_m=None):
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if not sensor: return None, None, None
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try:
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if not sensor.get_sensor_data(): return None, None, None
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t, rh, p = sensor.data.temperature, sensor.data.humidity, sensor.data.pressure
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gas = round(sensor.data.gas_resistance, 0) if sensor.data.heat_stable else None
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aqi_score = gas_to_aqi(gas, rh, c['GAS_REFERENCE'])
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pressure_buffer.append(p)
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p_rate = get_pressure_trend(c['PRESSURE_TREND_WINDOW'])
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dp = round(t - (100 - rh) / 5.0, 2)
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write(c, {
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'temperature': round(t + c['TEMP_CALIBRATION'], 2),
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'humidity': round(rh, 2),
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'dew_point': dp,
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'pressure_hpa': round(p, 2),
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'pressure_slp': sea_level_pressure(p, alt_m),
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'pressure_rate': p_rate,
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'humidity_abs': absolute_humidity(t, rh),
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'vapor_pressure_deficit': vpd(t, rh),
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'heat_index': heat_index(t, rh),
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'air_quality_ohms': gas,
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'air_quality': aqi_score,
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})
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return t, rh, aqi_score
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except Exception as e:
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print(f"[BME680] {e}")
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return None, None, None
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# ── MPU6050 ───────────────────────────────────────────────────────────────────
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MPU_ADDR = 0x68
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_mpu_peak = None
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_mpu_lock = threading.Lock()
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_mpu_offsets = None
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def calibrate_mpu(samples=200):
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if not bus: return None
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print(" Calibrating MPU6050, keep still...")
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sums = [0.0] * 6
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n = 0
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for _ in range(samples):
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d = try_read(lambda: bus.read_i2c_block_data(MPU_ADDR, 0x3B, 14))
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if d:
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sums[0] += s16((d[0] << 8) | d[1]) / 16384.0
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sums[1] += s16((d[2] << 8) | d[3]) / 16384.0
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sums[2] += s16((d[4] << 8) | d[5]) / 16384.0
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sums[3] += s16((d[8] << 8) | d[9]) / 131.0
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sums[4] += s16((d[10] << 8) | d[11]) / 131.0
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sums[5] += s16((d[12] << 8) | d[13]) / 131.0
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n += 1
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time.sleep(0.005)
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if n == 0: return None
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return [sums[0]/n, sums[1]/n, sums[2]/n - 1.0, sums[3]/n, sums[4]/n, sums[5]/n]
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def mpu_loop():
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global _mpu_peak
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while True:
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if bus and _mpu_offsets:
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d = try_read(lambda: bus.read_i2c_block_data(MPU_ADDR, 0x3B, 14))
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if d:
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o = _mpu_offsets
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ax = s16((d[0] << 8) | d[1]) / 16384.0 - o[0]
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ay = s16((d[2] << 8) | d[3]) / 16384.0 - o[1]
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az = s16((d[4] << 8) | d[5]) / 16384.0 - o[2] - 1.0 # remove gravity
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mag = math.sqrt(ax**2 + ay**2 + az**2)
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with _mpu_lock:
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if _mpu_peak is None or mag > _mpu_peak['seismic_magnitude']:
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_mpu_peak = {
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'seismic_x': round(ax, 3),
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'seismic_y': round(ay, 3),
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'seismic_z': round(az, 3),
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'seismic_magnitude': round(mag, 4),
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}
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time.sleep(0.01)
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def flush_mpu(c):
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global _mpu_peak
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with _mpu_lock:
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data, _mpu_peak = _mpu_peak, None
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if data and data['seismic_magnitude'] > c['SEISMIC_NOISE_FLOOR']:
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write(c, data)
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else:
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write(c, {'seismic_x': 0.0, 'seismic_y': 0.0, 'seismic_z': 0.0, 'seismic_magnitude': 0.0})
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# ── QMC5883L ──────────────────────────────────────────────────────────────────
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def read_compass(c):
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if not bus: return
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try:
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addr = 0x1E
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try_read(lambda: bus.write_byte_data(addr, 0x09, 0x1D))
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d = try_read(lambda: bus.read_i2c_block_data(addr, 0x00, 6))
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if not d: return
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x = s16((d[1] << 8) | d[0])
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y = s16((d[3] << 8) | d[2])
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z = s16((d[5] << 8) | d[4])
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heading = math.degrees(math.atan2(y, x))
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if heading < 0: heading += 360
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write(c, {'compass_x': x, 'compass_y': y, 'compass_z': z, 'heading': round(heading, 1)})
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except Exception as e:
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print(f"[QMC5883L] {e}")
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# ── LTR390 ───────────────────────────────────────────────────────────────────
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uv_dose_mj = 0.0
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uv_dose_date = datetime.now().date()
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last_uv_time = time.time()
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dli_lux_acc = 0.0
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dli_date = datetime.now().date()
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last_lux_time = time.time()
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daylight_start = None
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DAYLIGHT_LUX_THRESHOLD = 50
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def sun_elevation(lat, lon):
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now = datetime.now(timezone.utc)
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doy = now.timetuple().tm_yday
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hour_ut = now.hour + now.minute / 60 + now.second / 3600
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decl = math.radians(23.45 * math.sin(math.radians((360 / 365) * (doy - 81))))
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lstm = 15 * round(lon / 15)
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eot = (9.87 * math.sin(math.radians(2 * (360/365) * (doy - 81)))
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- 7.53 * math.cos(math.radians((360/365) * (doy - 81)))
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- 1.5 * math.sin(math.radians((360/365) * (doy - 81))))
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solar_time = hour_ut + (lon - lstm) / 15 + eot / 60
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ha = math.radians(15 * (solar_time - 12))
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lat_r = math.radians(lat)
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elev = math.degrees(math.asin(
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math.sin(lat_r) * math.sin(decl) +
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math.cos(lat_r) * math.cos(decl) * math.cos(ha)
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))
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return elev
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def estimate_cloud_cover(c, lux, temp, dew_point, lat, lon):
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elev = sun_elevation(lat, lon)
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temp_dp_spread = temp - dew_point
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hum_cloud = max(0.0, min(100.0, (1 - temp_dp_spread / 20.0) * 100))
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if elev < c['CLOUD_SUN_MIN_ELEV']:
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return round(hum_cloud, 1), round(elev, 2)
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theoretical = max(c['CLOUD_LUX_CLEAR_SKY'] * math.sin(math.radians(elev)), 1.0)
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solar_ratio = min(lux / theoretical, 1.0)
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solar_cloud = (1.0 - solar_ratio) * 100
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w = c['CLOUD_HUMIDITY_WEIGHT']
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blended = (1 - w) * solar_cloud + w * hum_cloud
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return round(min(max(blended, 0.0), 100.0), 1), round(elev, 2)
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def estimate_visibility(c, rh, aqi):
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rh_clamped = min(rh, 99.5)
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beta_rh = 0.000146 * math.exp(0.06 * rh_clamped)
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aqi_factor = 1.0 + ((aqi or 0) / 500.0) * 0.5
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extinction = beta_rh * aqi_factor
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return round(min(3.912 / extinction, c['VISIBILITY_MAX']), 2)
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def read_ltr(c, sensor, temp=None, dew_point=None, rh=None, aqi=None, lat=0.0, lon=0.0):
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global uv_dose_mj, uv_dose_date, last_uv_time
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global dli_lux_acc, dli_date, last_lux_time, daylight_start
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if not sensor: return
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try:
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lux = round(sensor.lux, 2)
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uvi = round(sensor.uvi, 2)
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except Exception as e:
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print(f"[LTR390] {e}")
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return
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now = time.time()
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today = datetime.now().date()
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if today != uv_dose_date: uv_dose_mj, uv_dose_date = 0.0, today
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if today != dli_date: dli_lux_acc, dli_date, daylight_start = 0.0, today, None
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uv_dose_mj += uvi * 25 * (now - last_uv_time)
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dli_lux_acc += lux * (now - last_lux_time)
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last_uv_time = now
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last_lux_time = now
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if lux >= DAYLIGHT_LUX_THRESHOLD and daylight_start is None:
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daylight_start = now
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fields = {
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'lux': lux,
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'uv_index': uvi,
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'solar_wm2': round(lux / 120, 2),
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'uv_dose': round(uv_dose_mj, 2),
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'daily_light_integral': round(dli_lux_acc / 54 / 1_000_000, 4),
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}
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if temp is not None and dew_point is not None:
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cloud, sun_elev = estimate_cloud_cover(c, lux, temp, dew_point, lat, lon)
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fields['clouds'] = cloud
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fields['sun_elevation'] = sun_elev
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if rh is not None:
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fields['visibility'] = estimate_visibility(c, rh, aqi)
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write(c, fields)
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# ── TF-Luna ───────────────────────────────────────────────────────────────────
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luna_baseline_cm = None
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def calibrate_luna(c):
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global luna_baseline_cm
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if not bus: print(" ❌ TF-Luna: no I2C bus"); return
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print(" Calibrating TF-Luna...")
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readings = []
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for _ in range(c['LUNA_CAL_SAMPLES']):
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d = try_read(lambda: bus.read_i2c_block_data(0x10, 0x00, 6))
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if d:
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dist, strength = d[0] | (d[1] << 8), d[2] | (d[3] << 8)
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if strength >= 100 and 0 < dist <= c['LUNA_MAX_DIST_CM']:
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readings.append(dist)
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time.sleep(0.1)
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if readings:
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luna_baseline_cm = round(sum(readings) / len(readings), 1)
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print(f" ✅ TF-Luna baseline: {luna_baseline_cm} cm")
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else:
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print(" ❌ TF-Luna: calibration failed")
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def read_luna(c):
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if not bus: return
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try:
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d = try_read(lambda: bus.read_i2c_block_data(0x10, 0x00, 6))
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if not d: return
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dist = d[0] | (d[1] << 8)
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strength = d[2] | (d[3] << 8)
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if strength < 100 or dist <= 0 or dist > c['LUNA_MAX_DIST_CM']: return
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fields = {'ground_distance': dist, 'ground_calibration': luna_baseline_cm, 'lidar_strength': strength}
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if luna_baseline_cm and (luna_baseline_cm - dist) >= c['LUNA_MIN_DEPTH_CM']:
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depth = round(luna_baseline_cm - dist, 1)
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fields['accumulation'] = depth
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else:
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fields['accumulation'] = 0
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write(c, fields)
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except Exception as e:
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print(f"[TF-Luna] {e}")
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# ── AS3935 ────────────────────────────────────────────────────────────────────
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lightning_distances = deque(maxlen=10)
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lightning_count = 0
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lightning_window_start = time.time()
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def init_as3935(c):
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if not bus: return
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try:
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addr = c['AS3935_ADDR']
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bus.write_byte_data(addr, 0x01, (c['AS3935_NOISE_FLOOR'] << 4) | c['AS3935_WATCHDOG'])
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bus.write_byte_data(addr, 0x02, c['AS3935_SPIKE_REJ'])
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bus.write_byte_data(addr, 0x00, 0x24)
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print(" ✅ AS3935")
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except Exception as e:
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print(f" ❌ AS3935: {e}")
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def read_as3935(c):
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global lightning_count, lightning_window_start
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if not bus: return
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try:
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addr = c['AS3935_ADDR']
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data = try_read(lambda: bus.read_i2c_block_data(addr, 0x00, 9))
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if not data: return
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interrupt = data[3] & 0x0F
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energy = ((data[5] & 0x1F) << 16) | (data[4] << 8) | data[3]
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try_read(lambda: bus.read_byte_data(addr, 0x03))
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if interrupt not in (0x04, 0x08) or energy < 1000: return
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dist = data[6] & 0x3F
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lightning_distances.append(dist)
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lightning_count += 1
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|
elapsed = time.time() - lightning_window_start
|
|
if elapsed >= 3600:
|
|
lightning_count, lightning_window_start, elapsed = 1, time.time(), 1
|
|
|
|
trend = 'Stationary'
|
|
if len(lightning_distances) >= 3:
|
|
avg_early = sum(list(lightning_distances)[:3]) / 3
|
|
avg_late = sum(list(lightning_distances)[-3:]) / 3
|
|
if avg_late < avg_early - 2: trend = 'Approaching'
|
|
elif avg_late > avg_early + 2: trend = 'Retreating'
|
|
|
|
write(c, {
|
|
'lightning_distance': dist,
|
|
'lightning_rate': round(lightning_count / (elapsed / 3600), 1),
|
|
'storm_trend': trend,
|
|
})
|
|
except Exception as e:
|
|
print(f"[AS3935] {e}")
|
|
|
|
# ── GPS ───────────────────────────────────────────────────────────────────────
|
|
|
|
gps_cache = {}
|
|
|
|
def read_gps(c):
|
|
try:
|
|
ser = serial.Serial(c['GPS_PORT'], c['GPS_BAUD'], timeout=1)
|
|
line = ser.readline().decode('ascii', errors='replace').strip()
|
|
ser.close()
|
|
if 'GGA' in line:
|
|
msg = pynmea2.parse(line)
|
|
gps_cache.update({
|
|
'latitude': msg.latitude,
|
|
'longitude': msg.longitude,
|
|
'altitude': msg.altitude,
|
|
'gps_satellites': int(msg.num_sats),
|
|
})
|
|
if gps_cache:
|
|
write(c, {k: v for k, v in gps_cache.items() if v is not None})
|
|
except Exception as e:
|
|
print(f"[GPS] {e}")
|
|
return gps_cache
|
|
|
|
# ── Rain ──────────────────────────────────────────────────────────────────────
|
|
|
|
def read_rain(c):
|
|
write(c, {'precipitation': 0, 'raining': False})
|
|
|
|
# ── Wind ──────────────────────────────────────────────────────────────────────
|
|
|
|
def read_wind(c):
|
|
write(c, {'wind_direction': 0, 'wind_speed': 0, 'wind_gusts': 0})
|
|
|
|
# ── System ────────────────────────────────────────────────────────────────────
|
|
|
|
def read_system(c):
|
|
try:
|
|
cpu_temp = None
|
|
for key in ('cpu_thermal', 'coretemp', 'k10temp', 'acpitz'):
|
|
if key in (temps := psutil.sensors_temperatures()):
|
|
cpu_temp = round(temps[key][0].current, 1)
|
|
break
|
|
cpu_freq = psutil.cpu_freq()
|
|
mem = psutil.virtual_memory()
|
|
disk = psutil.disk_usage('/')
|
|
write(c, {
|
|
'cpu_temp': cpu_temp,
|
|
'cpu_usage': round(psutil.cpu_percent(interval=None), 1),
|
|
'cpu_freq_mhz': round(cpu_freq.current, 1) if cpu_freq else None,
|
|
'mem_used_mb': round(mem.used / 1024**2, 1),
|
|
'mem_total_mb': round(mem.total / 1024**2, 1),
|
|
'mem_percent': mem.percent,
|
|
'disk_used_gb': round(disk.used / 1024**3, 2),
|
|
'disk_total_gb': round(disk.total / 1024**3, 2),
|
|
'disk_percent': disk.percent,
|
|
}, collection='system')
|
|
except Exception as e:
|
|
print(f"[System] {e}")
|
|
|
|
# ── Main ──────────────────────────────────────────────────────────────────────
|
|
|
|
if __name__ == '__main__':
|
|
print("\n🌦 Weather Station — Initialising...\n")
|
|
c = cfg()
|
|
|
|
bme_sensor = try_init(init_bme, 'BME680')
|
|
ltr_sensor = try_init(lambda: adafruit_ltr390.LTR390(i2c) if i2c else (_ for _ in ()).throw(Exception('no i2c')), 'LTR390')
|
|
|
|
if bus:
|
|
try_read(lambda: bus.write_byte_data(MPU_ADDR, 0x6B, 0))
|
|
time.sleep(0.1)
|
|
_mpu_offsets = try_init(calibrate_mpu, 'MPU6050')
|
|
else:
|
|
_mpu_offsets = None
|
|
print(" ❌ MPU6050: no I2C bus")
|
|
|
|
threading.Thread(target=mpu_loop, daemon=True).start()
|
|
init_as3935(c)
|
|
calibrate_luna(c)
|
|
|
|
print("\n🚀 Starting sensor loop...\n")
|
|
|
|
last_temp = None
|
|
last_rh = None
|
|
last_aqi = None
|
|
|
|
while True:
|
|
c = cfg()
|
|
gps = read_gps(c)
|
|
|
|
lat = gps.get('latitude') or c['LATITUDE']
|
|
lon = gps.get('longitude') or c['LONGITUDE']
|
|
alt = gps.get('altitude') or c['ALTITUDE']
|
|
|
|
result = read_bme(c, bme_sensor, alt_m=alt)
|
|
if result and result[0] is not None:
|
|
last_temp, last_rh, last_aqi = result
|
|
|
|
dp = None
|
|
if last_temp is not None and last_rh is not None:
|
|
dp = round(last_temp - (100 - last_rh) / 5.0, 2)
|
|
|
|
flush_mpu(c)
|
|
read_compass(c)
|
|
read_ltr(c, ltr_sensor,
|
|
temp=last_temp, dew_point=dp,
|
|
rh=last_rh, aqi=last_aqi,
|
|
lat=lat, lon=lon)
|
|
read_luna(c)
|
|
read_as3935(c)
|
|
read_rain(c)
|
|
read_wind(c)
|
|
read_system(c)
|
|
|
|
time.sleep(c['LOOP_INTERVAL'])
|