| CPC F24F 11/38 (2018.01) [H04R 1/08 (2013.01); H04R 3/00 (2013.01)] | 20 Claims |
|
1. A heating, ventilation, and air conditioning (HVAC) system, comprising:
a cooling unit configured to receive an airflow and to transfer heat from the received airflow to a flow of refrigerant;
a condensing unit configured to reject heat from the flow of refrigerant, the condensing unit comprising a fan and a motor;
a sound sensor configured to capture an audio signal of the condensing unit; and
an analysis device operably coupled to the sound sensor, comprising:
a memory operable to store an audio signature library comprising a plurality of audio signatures, wherein:
each audio signature identifies one or more attributes for a portion of an audio signal; and
each audio signature is associated with one or more fault types for one or more of the motor, the fan, or mounting hardware of the condensing unit; and
a processor operably coupled to the memory, configured to:
determine that there is a demand to operate the fan within the condensing unit of the HVAC system;
receive a first audio signal from the sound sensor associated with the condensing unit;
determine an audio signature of the received first audio signal;
determine that the motor is not in a first mode of operation based on the determined audio signature;
determine whether a second audio signal is received from the sound sensor;
in response to determining that the sound sensor received the second audio signal, determine the fault type based on the determination of the audio signature present within the first audio signal; and
output a recommendation based on the determined fault type.
|