Device location network

A method implemented using a monitoring system that is configured to monitor a property, the method comprising:

• receiving, by the monitoring system and from multiple sensors installed at the property, sensor data that reflects an attribute of the property;
• obtaining, by the monitoring system and from a plurality of anchor devices in a room at the property, signal data that describes emitted signals generated by a subset of the multiple sensors, wherein sensors of the subset are located in the room;
• providing a respective location of the plurality of anchor devices as input parameters to a tri-lateration algorithm that is used to process the signal data;
• computing a distance metric for each sensor among the multiple sensors based on the tri-lateration algorithm that uses the respective location of the plurality of anchor devices as the input parameters for processing the signal data;
• using circuitry of the monitoring system, determining, using the tri-lateration algorithm and the respective location of at least one anchor device from the plurality of anchor devices, a respective location of the multiple sensors installed at the property in response to computing positional data that includes the distance metric for said each sensor among the multiple sensors;
• in response to said determining the respective location of the multiple sensors, determining a change in the respective location of a sensor among the multiple sensors relative to the at least one anchor device using a sensor reference signal that is used as a reference for the respective location of the sensor;
• and
• in response to determining the change in the respective location of the sensor among the multiple sensors relative to the at least one anchor device, triggering an alarm or changing a status of the monitoring system.

One or more non-transitory machine-readable storage devices storing instructions that are executable by one or more processing devices to cause performance of operations comprising:

• receiving, by a monitoring system and from multiple sensors installed at a property, sensor data that reflects an attribute of the property;
• obtaining, by the monitoring system and from a plurality of anchor devices in a room at the property, signal data that describes emitted signals generated by a subset of the multiple sensors, wherein sensors of the subset are located in the room;
• providing a respective location of the plurality of anchor devices as input parameters to a tri-lateration algorithm that is used to process the signal data;
• computing a distance metric for each sensor among the multiple sensors based on the tri-lateration algorithm that uses the respective location of the plurality of anchor devices as the input parameters for processing the signal data;
• using circuitry of the monitoring system, determining, using the tri-lateration algorithm and the respective location of at least one anchor device from the plurality of anchor devices, a respective location of the multiple sensors installed at the property in response to computing positional data that includes the distance metric for said each sensor among the multiple sensors;
• in response to said determining the respective location of the multiple sensors, determining a change in the respective location of a sensor among the multiple sensors relative to the at least one anchor device using a sensor reference signal that is used as a reference for the respective location of the sensor;
• and
• in response to determining the change in the respective location of the sensor among the multiple sensors relative to the at least one anchor device, triggering an alarm or changing a status of the monitoring system.