Appliance monitoring sensors

1. A sensor unit comprising:

a power source;

a communication interface; and

a sensor coupled between the power source and the communication interface, the sensor configured to establish an electrically conductive path from the power source to the communication interface upon an occurrence of a first condition in a clothes dryer that triggers a pre-calibrated set point of the sensor, thereby, providing power to the communication interface and permitting the communication interface to transmit data indicating the condition to a computing device, and the sensor configured to remove the electrically conductive path upon an occurrence of a second condition in the clothes dryer that triggers a pre-calibrated reset point of the sensor.

2. The sensor unit of claim 1 , wherein the data includes identity information of the sensor unit.

3. The sensor unit of claim 1 , wherein the sensor is configured to disconnect the power source from the communication interface when the condition in the clothes dryer clears, thereby, causing the communication interface to cease transmitting the data indicating the condition.

4. The sensor unit of claim 1 , wherein the power source is one of a battery, a thermo-electric power source, a piezo-electric power source, a magnetic induction power source.

5. The sensor unit of claim 1 , further comprising a housing that houses the power source, the communication interface, and the sensor, the housing comprising a dryer ball, and

wherein the sensor comprises a thermal switch or a pressure switch.

6. The sensor unit of claim 1 , wherein the condition is a dryer exhaust temperature above a threshold value, a dryer exhaust pressure above a threshold value, a temperature at a dryer thermostat above a threshold value, or a temperature inside a dryer drum above a threshold value.

7. The sensor unit of claim 1 , wherein the sensor has a set-point value and a reset-point value that is different from the set-point value.

8. A system comprising:

at least one clothes dryer sensor unit comprising:

a power source;

a communication interface; and

a sensor coupled between the power source and the communication interface, the sensor configured to establish an electrically conductive path from the power source to the communication interface upon an occurrence of a first condition in a clothes dryer that triggers a pre-calibrated set point of the sensor, thereby, providing power to the communication interface and permitting the communication interface to transmit data indicating the condition to a computing device, and the sensor configured to remove the electrically conductive path upon an occurrence of a second condition in the clothes dryer that triggers a pre-calibrated reset point of the sensor; and

a monitoring system comprising at least one processor; and a data store coupled to the at least one processor having instructions stored thereon which, when executed by the at least one processor, causes the at least one processor to perform operations comprising:

receiving, from the at least one sensor unit, a data transmission including a serial number of the at least one sensor unit;

determining, based on having received the data transmission, that a condition has occurred in a clothes dryer;

identifying, based on the serial number of the at least one sensor unit, a user computing device that is registered to receive notifications related to a clothes dryer that is associated with the at least one sensor unit; and

providing, to the user computing device, an electronic notification to correct an unsafe condition in the clothes dryer.

9. The system of claim 8 , wherein determining that a condition has occurred in the clothes dryer comprises identifying a pattern of multiple discrete data transmissions from a particular sensor unit each discrete data transmission including the serial number of the particular sensor unit, the pattern of discrete data transmissions indicating that the clothes dryer is operating in an abnormal pattern.

10. The system of claim 8 , wherein determining that a condition has occurred in the clothes dryer comprises determining that data transmissions have been received from a predetermined number of different sensor units associated with the clothes dryer.

11. The system of claim 8 , wherein determining that a condition has occurred in the clothes dryer comprises determining that data transmissions have been received from a predetermined set of different sensor units associated with the clothes dryer.

12. The system of claim 8 , wherein the operations further comprise receiving, from the user computing device, a user input to shut down the clothes dryer; and causing the clothes dryer to be shut down remotely.

13. The system of claim 12 , wherein causing the clothes dryer to be shut down remotely comprises sending a command to a communication interface of the clothes dryer to shut down the clothes dryer.

14. The system of claim 12 , wherein the monitoring system is part of a control system of the clothes dryer and causing the clothes dryer to be shut down remotely comprises causing the control system of the clothes dryer to shut down the clothes dryer.

15. A monitoring system for clothes dryers, the system comprising:

at least one clothes dryer sensor unit comprising:

a power source;

a communication interface; and

a sensor coupled between the power source and the communication interface, the sensor configured to establish an electrically conductive path from the power source to the communication interface upon an occurrence of a first condition in a clothes dryer that triggers a pre-calibrated set point of the sensor, thereby, providing power to the communication interface and permitting the communication interface to transmit data indicating the condition to a computing device, and the sensor configured to remove the electrically conductive path upon an occurrence of a second condition in the clothes dryer that triggers a pre-calibrated reset point of the sensor; and

a monitoring hub comprising:

a charging connection for the at least one clothes dryer sensor unit;

a communication interface;

at least one processor coupled to the communication interface; and

a data store coupled to the at least one processor having instructions stored thereon which, when executed by the at least one processor, causes the at least one processor to perform operations comprising:

receiving, from at least one sensor unit, a data transmission including a serial number of the at least one sensor unit;

determining, based on having received the data transmission, that a condition has occurred in a clothes dryer;

identifying, based on the serial number of the at least one sensor unit, a user computing device that is registered to receive notifications related to a clothes dryer that is associated with the at least one sensor unit; and

providing, to a user computing device registered to receive notifications from the monitoring hub, an electronic notification to correct an unsafe condition in the clothes dryer.

16. The monitoring hub of claim 15 , wherein determining that a condition has occurred in the clothes dryer comprises identifying a pattern of multiple discrete data transmissions from a particular sensor unit each discrete data transmission including the serial number of the particular sensor unit, the pattern of discrete data transmissions indicating that the clothes dryer is operating in an abnormal pattern.

17. The monitoring hub of claim 15 , wherein determining that a condition has occurred in the clothes dryer comprises determining that data transmissions have been received from a predetermined number of different sensor units associated with the clothes dryer.

18. The monitoring hub of claim 15 , wherein determining that a condition has occurred in the clothes dryer comprises determining that data transmissions have been received from a predetermined set of different sensor units associated with the clothes dryer.

19. The monitoring hub of claim 15 , wherein the operations further comprise receiving, from the user computing device, a user input to shut down the clothes dryer; and causing the clothes dryer to be shut down remotely.

20. The monitoring hub of claim 19 , wherein causing the clothes dryer to be shut down remotely comprises sending a command to the communication interface of the clothes dryer to shut down the clothes dryer.