DETECTION OF CONTAMINATION STATUS FOR REFRIGERATOR ULTRASONIC SENSOR ASSEMBLY

摘要

Systems and methods for detecting a contamination status of an ultrasonic sensor assembly included in a refrigeration appliance are provided. An exemplary refrigerator includes a sensor assembly. The sensor assembly includes a first ultrasonic sensor configured to transmit an ultrasonic signal and a second ultrasonic sensor configured to receive the ultrasonic signal. The refrigerator is configured to perform operations comprising detecting whether the sensor assembly is contaminated based on one or more characteristics of the received ultrasonic signal. An exemplary method includes monitoring a change in a characteristic of a plurality of crosstalk components of a plurality of ultrasonic signals of over a period of time to detect a contaminated state of an ultrasonic sensor.

主权项

1. A refrigerator, comprising:
a sensor assembly comprising:
a first ultrasonic sensor configured to transmit an ultrasonic signal; anda second ultrasonic sensor configured to receive the ultrasonic signal; wherein the refrigerator is configured to perform operations comprising detecting whether the sensor assembly is contaminated based on one or more characteristics of the received ultrasonic signal.