Will you keep sensor in sleep mode if there is no movement of door?

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    Julian

    Hi Vishnu,

     

    Great question! You're correct, the sensor uses a sleep mode until it is woken up by the movement of the door. At this time our second generation sensors see on average about one year of battery life.

     

    The sensors use a proprietary radio protocol to communicate to the bridge.

     

    Feel free to reach out to support@getnotion.com with any other questions!

     

    Best,

    Julian @ Notion Support

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    Vishnu Dhanavath

    Hello Julian,

    Okay, thank you for your quick response. I think you are using gyroscope angular rate values are the triggering events for the sensor to come from sleep to active mode on a horizontal moving door. If, suppose the opening door rate(say I am opening door very slowly less than are equal to gyroscope zero rate value) is less than your triggering input value, how should our notion sensor detect this type of motion.

    Will the notion sensor detect it? or this type of motion will not be practical happen?

    What will be the power consumption of your sensor when it is in sleep mode, with that value only you determined the one-year battery life right?

    Thank you

    D.Vishnu

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    Julian

    Hi Vishnu,

     

    The latest version of our sensor firmware will trigger on the magnetic orientation of the sensor. That means that the sensor cannot be tricked by opening the door very slowly. If you have a Notion sensor on a door in your home that requires a firmware update, please let me know and I can take care of that on my end.

     

    The battery life of the sensor is determined by the average power consumption across awake and sleep modes. 1 Year is a reasonable figure for all sensors in the average home.

     

    Best,

    Julian @ Notion Support

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    Vishnu Dhanavath

    Hello Julian,

    How a magnetic orientation is related to a movement of the door, I am having little curious to know the functionality of the sensor. Which sensor you're using for detecting magnetic orientation(Is it using an IMU)?

    Thank you

    D.Vishnu

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    Julian

    Hi Vishnu,

     

    We use a small magnetometer to determine the magnetic orientation of a sensor. Unfortunately I don't have additional specifics that I can share about the hardware in the sensor.

     

    Best,

     

    Julian @  Notion Support

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    Vishnu Dhanavath

    Hello Julian,

    As Magnetometer measure Earth's magnetic field or any magnetic field strength it experiences, how when a door is moving the magnetic field is changing, is it because of the door movement experiencing different earth's magnetic field levels or the magnetic field present around the door. 

    How you are managing the external magnetic interference created different devices in the move, say we have a mobile phone or handheld magnet will this trigger a false notification right?

    Thank you

    D. Vishnu

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    Julian

    Hi Vishnu,

     

    The sensor monitors it's position in space as the result of the change in magnetic field relative to the home position calibrated when the door is closed. As soon as the sensor moves outside of the invisible box that we mark as "closed", then the sensor will trigger an alert that the door was opened.

     

    In our testing we have tried many different methods of triggering false positive alerts. Of course a handheld magnet can cause one, but we haven't seen phones or other small electronics trigger false positive alerts.

     

    As an interesting aside here, we did find that the magnetic field created by the motor in a cordless drill can cause a false positive alert, but only when the drill was turned on. Unfortunately there is not much that we can do in our data models to account for some of those unique environmental contexts.

     

    Best,

    Julian

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