ScottH
January 3, 2022, 9:30am
1
Hi,
I am trying to use Deep Sleep with sliding_window_moving_average, in ESPHome (using an ESP32). I don’t think this works - the average value resets every time it goes to sleep.
Does anyone know a succinct solution for this?
I am keen to not rely on any server infrastructure (Home Assistant), so that my auto chicken door continues to work even if the server is not available.
My code is simple, currently just publishing a light sensor value to MQTT:
esphome:
name: chicken-coop
platform: ESP32
board: esp32dev
# Enable logging
logger:
# Enable Home Assistant API
#api:
ota:
password: "<REMOVED>"
wifi:
ssid: "<REMOVED>"
password: "<REMOVED>"
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Chicken-Coop Fallback Hotspot"
password: "<REMOVED>"
deep_sleep:
id: deep_sleep_1
run_duration: 3min
sleep_duration: 30s
mqtt:
broker: 192.168.1.110
on_message:
- topic: chickens/deepsleepactive
payload: 'DISABLED'
then:
- deep_sleep.prevent: deep_sleep_1
- topic: chickens/deepsleepactive
payload: 'FORCE'
then:
- deep_sleep.enter: deep_sleep_1
sensor:
- platform: adc
pin: GPIO32
name: "TEMT6000 Illuminance"
device_class: illuminance
unit_of_measurement: lx
#update_interval: 5s
filters:
- sliding_window_moving_average:
window_size: 60
send_every: 1
- lambda: |-
return (x / 10000.0) * 2000000.0;
Thanks for your thoughts in advance.
Scott
DallasH
January 5, 2022, 5:13am
2
I’m learning Deep Sleep right now as well. regarding variables, you may need to place it into the RTC memory.
Only data in the RTC memory is recoverable after restart, but note there is not much space to store data.
check this out: Deep sleep: Use RTC memory to store data (ESP32 + Arduino series) - YouTube
Please let me know how it goes, as I’m going to be in a similar situation soon.
I did also see that your sleep duration is only 30s? why is that?
Hope some of this helps.
ScottH
February 3, 2022, 1:15pm
3
Hi,
You are right Dallas; I had to create global variables to be able to store in RTC memory, and use those variables to re-write the sliding_window_moving_average myself. It’s working perfectly now, but does make the code a little more complex!
If it’s of use, here is my solution to this one:
esphome:
name: chicken-coop
platform: ESP32
board: esp32dev
# Enable logging
logger:
# Enable Home Assistant API
#api:
ota:
password: "<REMOVED>"
wifi:
ssid: "<REMOVED>"
password: "<REMOVED>"
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "<REMOVED>"
password: "<REMOVED>"
deep_sleep:
id: deep_sleep_1
run_duration: 3min
sleep_duration: 30s
mqtt:
broker: 192.168.1.110
id: mqtt_client
on_message:
- topic: chickens/deepsleepactive
payload: 'DISABLED'
then:
- deep_sleep.prevent: deep_sleep_1
- topic: chickens/deepsleepactive
payload: 'FORCE'
then:
- deep_sleep.enter: deep_sleep_1
- topic: chickens/doorMode
payload: 'MANUAL'
then:
- lambda: |-
id(isInManualMode) = true;
- topic: chickens/doorMode
payload: 'AUTO'
then:
- lambda: |-
id(isInManualMode) = false;
- topic: chickens/manualDoorRequest
payload: 'CLOSE'
then:
- script.execute: closeDoorScript
- topic: chickens/manualDoorRequest
payload: 'OPEN'
then:
- script.execute: openDoorScript
globals:
- id: lightSensorReadingsArry
type: int[5]
restore_value: yes
- id: valueIndex
type: int
restore_value: yes
initial_value: '0'
- id: sensorReadingMovingAverage
type: int
restore_value: yes
initial_value: '0'
- id: doorIsClosed
type: bool
restore_value: yes
initial_value: 'true'
- id: isInManualMode
type: bool
restore_value: yes
initial_value: 'false'
script:
- id: closeDoorScript
then:
- mqtt.publish:
topic: chicken-coop/doorAction
payload: "Door Closing"
- switch.turn_on: closedoorswitch1
- switch.turn_on: closedoorswitch2
- delay: 4s
- switch.turn_off: closedoorswitch1
- switch.turn_off: closedoorswitch2
- mqtt.publish:
topic: chicken-coop/doorAction
payload: "Door Closed"
- lambda: |-
id(doorIsClosed) = true;
- id: openDoorScript
then:
- mqtt.publish:
topic: chicken-coop/doorAction
payload: "Door Opening"
- switch.turn_on: opendoorswitch1
- switch.turn_on: opendoorswitch2
- delay: 4s
- switch.turn_off: opendoorswitch1
- switch.turn_off: opendoorswitch2
- mqtt.publish:
topic: chicken-coop/doorAction
payload: "Door Open"
- lambda: |-
id(doorIsClosed) = false;
switch:
- platform: gpio
name: "closedoorswitch1"
id: closedoorswitch1
pin: GPIO12
- platform: gpio
name: "closedoorswitch2"
id: closedoorswitch2
pin: GPIO13
- platform: gpio
name: "opendoorswitch1"
id: opendoorswitch1
pin: GPIO18
- platform: gpio
name: "opendoorswitch2"
id: opendoorswitch2
pin: GPIO19
sensor:
- platform: adc
pin: GPIO32
name: "TEMT6000 Illuminance"
device_class: illuminance
unit_of_measurement: lx
update_interval: 5s
on_value:
then:
- if:
condition:
lambda: |-
if (id(sensorReadingMovingAverage) < 30)
{
if (id(doorIsClosed) == false)
{
if(id(isInManualMode) == false)
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
else
{
return false;
}
then:
- script.execute: closeDoorScript
- if:
condition:
lambda: |-
int newReading = static_cast<int>((x / 10000) * 2000000);
if (newReading > 50)
{
if (id(doorIsClosed) == true)
{
if(id(isInManualMode) == false)
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
else
{
return false;
}
then:
- script.execute: openDoorScript
- lambda: |-
int windowSize = 5;
if (id(valueIndex) < windowSize)
{
id(lightSensorReadingsArry)[id(valueIndex)] = static_cast<int>((x / 10000) * 2000000);
std::string sensorReadingStr = to_string(id(lightSensorReadingsArry)[id(valueIndex)]);
id(mqtt_client).publish("chicken-coop/newSensorReading", sensorReadingStr);
std::string currentIndexStr = to_string(id(valueIndex));
id(mqtt_client).publish("chicken-coop/valueIndex", currentIndexStr);
id(valueIndex) = id(valueIndex) + 1;
}
else
{
id(valueIndex) = 0;
}
id(sensorReadingMovingAverage) = 0;
for (int i = 0; i < windowSize; i++)
{
id(sensorReadingMovingAverage) = id(sensorReadingMovingAverage) + id(lightSensorReadingsArry)[i];
}
id(sensorReadingMovingAverage) = id(sensorReadingMovingAverage) / windowSize;
int localReadingAverage = id(sensorReadingMovingAverage);
std::string sensorReadingMovingAverageStr = to_string(localReadingAverage);
id(mqtt_client).publish("chicken-coop/id(sensorReadingMovingAverage)", sensorReadingMovingAverageStr);
ScottH
February 3, 2022, 1:16pm
4
My sleep duration was previously on 30 seconds while I was developing / testing. In the real world, it’ll sleep for 28 minutes and wake for 2 minutes.
dbaarda
June 14, 2022, 2:22am
5
I see you are using a sliding window for your moving average. This requires a lot more complexity and state than an exponentially decaying average, which IMHO also gives a better value since it avoids the “hickup” effect when large values move out of your moving window.
The maths for this is just;
sensorAverage = (windowSize*sensorAverage + sensorReading)/(windowSize+1)
This gives the average over (approximately) the last windowSize readings and requires only a single value in state (sensorAverage). This is also known as a “Low Pass Filter”, and its behaviour has a bunch of well known (and useful) characteristics.
1 Like
@ScottH Thankyou for sharing - very helpful@dbaarda Love the “exponentially decaying average” thankyou
I think there is a bug in the code to store the values in the array
(Removing the MQTT to make it easier to read)
As I see it when id(valueIndex) == windowSize
This is both simpler (always good IMHO) and stores all values:
- lambda: |-
int windowSize = 5;
//store the value
id(lightSensorReadingsArry)[id(valueIndex)] = static_cast<int>((x / 10000) * 2000000);
//Loop index if required
if (id(valueIndex) == windowSize)
{
id(valueIndex) = 0;
}
[/quote]
(OMG, I’m going to be sorry embarrassed if I’m wrong, in which case: Sorry)