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60 lines
2.4 KiB
ReStructuredText
60 lines
2.4 KiB
ReStructuredText
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Analog Threshold Binary Sensor
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==============================
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.. seo::
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:description: Instructions for setting up an analog threshold binary sensors.
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:image: analog_threshold.svg
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The ``analog_threshold`` binary sensor platform allows you to convert analog values
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(i.e. :doc:`sensor </components/sensor/index>` readings)
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into boolean values, using a threshold as a reference.
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When the signal is above or equal to the threshold the binary sensor is `true`
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(this behavior can be changed adding and `invert` filter).
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It provides an *hysteresis* option to reduce instability when the source signal is noisy
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using different limits depending on the current state.
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Additionally a :ref:`delay filter <binary_sensor-filters>` could be used to only change
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after a new state has been kept a minimum time.
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If the source sensor is uninitialized at the moment of component creation, the initial
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state of the binary sensor wil be `false`, if later it has some reading errors, those
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invalid source updates will be ignored, and the binary sensor will keep it´s last state.
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For example, below configuration would turn the readings of current sensor into
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a binary sensor.
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.. code-block:: yaml
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# Example configuration entry
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binary_sensor:
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- platform: analog_threshold
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name: "Garage Door Opening"
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sensor_id: motor_current_sensor
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threshold: 0.5
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Configuration variables
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-----------------------
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- **name** (**Required**, string): The name of the binary sensor.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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- **sensor_id** (**Required**, :ref:`config-id`): The ID of the source sensor.
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- **threshold** (**Required**, float or mapping): Configures the reference for comparison. Accepts either a shorthand
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float number that will be used as both upper/lower threshold, or a mapping to define different values for each (to
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use hysteresis).
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- **upper** (**Required**, float): Upper threshold, that needs to be crossed to transition from ``low`` to ``high`` states.
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- **lower** (**Required**, float): Lower threshold, that needs to be crossed to transition from ``high`` to ``low`` states.
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- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
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See Also
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--------
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- :doc:`/components/binary_sensor/index`
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- :doc:`/components/sensor/index`
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- :ref:`automation`
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- :apiref:`analog_threshold/analog_threshold_binary_sensor.h`
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- :ghedit:`Edit`
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