System and method for detection of a malfunction in an elevator

A method for detection of a malfunction in an elevator cab comprising a controller, one or more microphones, a server, the method comprising:

• inputting, in the controller, at least one sound signal captured by the one or more microphones;
• processing, by the controller, the at least one sound signal received from the one or more microphones;
• determining, by the controller, that the at least one sound signal received by the one or more microphones has originated from the elevator cab;
• and
• transmitting the at least one sound signal which has originated from the elevator cab to a server;
• and
• wherein the at least one sound signal is processed at the server that detects the malfunction in the elevator cab;
• wherein the one or more microphones include a first microphone positioned at a first location inside the elevator cab, a second microphone positioned at a second location inside the elevator cab, and a third microphone positioned at a third location outside the elevator cab, and wherein the method includes:
• comparing a difference in a time of reception of a sound signal by the first microphone and the second microphone to a range of time interval values, and
• comparing an average amplitude of a sound signal received by the first microphone and the second microphone with an amplitude of a sound received by the third microphone to determine if the at least one sound has originated from the elevator cab.

A system for detection of a malfunction in an elevator comprising:

• an elevator cab;
• a server;
• one or more microphones positioned in the elevator cab;
• a controller configured to:
• receive signals captured by the one or more microphones;
• determine that the signals received by the one or more microphones have originated from the elevator cab;
• and
• transmit the signals received by the one or more microphones which have originated from the elevator cab to a server,
• wherein the server processes the transmitted signals and detects the malfunction in the elevator cab;
• wherein the one or more microphones include a first microphone positioned at a first location inside the elevator cab and a second microphone positioned at a second location inside the elevator cab;
• wherein the controller is configured to compare a difference in a time of reception of a sound signal by the first microphone and the second microphone to a range of time interval values to determine if the sound signal has originated from the elevator cab.

A system for detection of a malfunction in an elevator comprising:

• an elevator cab;
• a server;
• one or more microphones positioned in the elevator cab;
• a controller configured to:
• receive signals captured by the one or more microphones;
• determine that the signals received by the one or more microphones have originated from the elevator cab;
• and
• transmit the signals received by the one or more microphones which have originated from the elevator cab to a server,
• wherein the server processes the transmitted signals and detects the malfunction in the elevator cab;
• wherein the one or more microphones include a first microphone positioned at a first location inside the elevator cab, a second microphone positioned at a second location inside the elevator cab, and a third microphone positioned at a third location outside the elevator cab;
• wherein the controller is configured to:
• compare a difference in a time of reception of a sound signal by the first microphone and the second microphone to a range of time interval values, and
• compare an average amplitude of a sound received by the first and the second microphones with an amplitude of a sound received by the third microphone to determine if the sound has originated from the elevator cab.