sthope/battery2mqtt
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add time remaining calculation

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M.J. Wydra
2020-12-05 10:52:54 -06:00
parent ea9dfbc431
commit 23e6b3580b
2 changed files with 16 additions and 3 deletions
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5
README.md
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@@ -35,6 +35,7 @@ services:
- INTERVAL=60 - INTERVAL=60
- MONITORED_CONDITIONS=status,capacity - MONITORED_CONDITIONS=status,capacity
- BATTERY_HEALTH=1 - BATTERY_HEALTH=1
- TIME_REMAINING=1
volumes: volumes:
- /sys/class/power_supply:/sys/class/power_supply:ro - /sys/class/power_supply:/sys/class/power_supply:ro
restart: unless-stopped restart: unless-stopped
@@ -59,8 +60,10 @@ You can specify only those conditions that you'd like to track. The default is t
``` ```
alarm,capacity,capacity_level,present,status,voltage_now alarm,capacity,capacity_level,present,status,voltage_now
``` ```
# Battery health calculation
# Battery health and time remaining calculations
The default is to also provide a battery health percentage calculation by dividing `energy_full` by `energy_full_design`. This can be disabled by setting `BATTERY_HEALTH` to `0` in your `docker-compose.yaml`. The default is to also provide a battery health percentage calculation by dividing `energy_full` by `energy_full_design`. This can be disabled by setting `BATTERY_HEALTH` to `0` in your `docker-compose.yaml`.
Similiarly, an estimate of time remaining on battery (in hours) is calculated by dividing `energy_now` by `power_now`. This can be disabled by setting `TIME_REMAINING` to `0` in your `docker-compose.yaml`.
# Example Home Assistant configuration # Example Home Assistant configuration
```yaml ```yaml

12
battery2mqtt.py
View File

@@ -12,6 +12,7 @@ MQTT_TOPIC = os.getenv('MQTT_TOPIC', 'server')
INTERVAL = int(os.getenv('INTERVAL', 60)) INTERVAL = int(os.getenv('INTERVAL', 60))
MONITORED_CONDITIONS = os.environ.get('MONITORED_CONDITIONS','alarm,capacity,capacity_level,present,status,voltage_now') MONITORED_CONDITIONS = os.environ.get('MONITORED_CONDITIONS','alarm,capacity,capacity_level,present,status,voltage_now')
BATTERY_HEALTH = os.getenv('BATTERY_HEALTH', 1) BATTERY_HEALTH = os.getenv('BATTERY_HEALTH', 1)
TIME_REMAINING = os.getenv('TIME_REMAINING', 1)
client = mqtt.Client("battery2mqtt") client = mqtt.Client("battery2mqtt")
client.username_pw_set(MQTT_USER, MQTT_PASSWORD) client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
@@ -24,6 +25,7 @@ dirs = os.listdir(path)
payload = {} payload = {}
health_calc = {} health_calc = {}
time_remaining = {}
while True: while True:
for dir in dirs: for dir in dirs:
@@ -44,11 +46,19 @@ while True:
for name in ['energy_full_design', 'energy_full']: for name in ['energy_full_design', 'energy_full']:
with open(path + dir + '/' + name, 'r') as file: with open(path + dir + '/' + name, 'r') as file:
health_calc[name] = int(file.read().replace('\n','')) health_calc[name] = int(file.read().replace('\n',''))
json.dumps(health_calc)
payload['battery_health'] = round((health_calc['energy_full'] / health_calc['energy_full_design']) * 100,2) payload['battery_health'] = round((health_calc['energy_full'] / health_calc['energy_full_design']) * 100,2)
except: except:
pass pass
if TIME_REMAINING == '1':
try:
for name in ['energy_now', 'power_now']:
with open(path + dir + '/' + name, 'r') as file:
time_remaining[name] = int(file.read().replace('\n',''))
payload['time_remaining'] = round((time_remaining['energy_now'] / time_remaining['power_now']),2)
except:
pass
client.connect(MQTT_HOST) client.connect(MQTT_HOST)
client.publish("battery2mqtt/" + MQTT_TOPIC + '/' + dir, json.dumps(payload), qos=MQTT_QOS, retain=False) client.publish("battery2mqtt/" + MQTT_TOPIC + '/' + dir, json.dumps(payload), qos=MQTT_QOS, retain=False)