Self-cleaning safety system
AssigneeMicrochip Technology Incorporated
InventorsPatrick McFarland, Arthur Eck
Life of this patent
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Abstract
An apparatus includes a control circuit to connect to an audio device of a safety system. The safety system is to detect a hazardous condition. The audio device is to alert a user of the hazardous condition. The safety system is to include a sensor to sense the hazardous condition. The apparatus includes an interface to connect the control circuit to the audio device. The control circuit is to determine whether to clean a housing of the sensor and, based on a determination to clean the housing of sensor, cause the audio device to vibrate or issue sound waves at an inaudible frequency.
Claims20
An apparatus, comprising:
- a control circuit to connect to an audio device of a safety system, the safety system to detect a hazardous condition, the audio device to alert a user of the hazardous condition, the safety system to include a sensor to sense the hazardous condition;
- and
- an interface to connect the control circuit to the audio device;
- wherein the control circuit is to:
- determine whether to clean a housing of the sensor;
- based on a determination to clean the housing of the sensor, cause the audio device to vibrate or issue sound waves at a frequency;
- and
- control a notch filter to filter out frequencies outside of the frequency, including to turn off the notch filter when the audio device is issuing the alert to the user about the hazardous condition and to turn on the notch filter when causing the audio device to clean the housing.
An apparatus, comprising:
- a control circuit to connect to an audio device of a safety system, the safety system to detect a hazardous condition, the audio device to alert a user of the hazardous condition, the safety system to include a sensor to sense the hazardous condition;
- and
- an interface to connect the control circuit to the audio device;
- wherein the control circuit is to:
- determine whether to clean a housing of the sensor;
- and
- based on a determination to clean the housing of the sensor, cause:
- the audio device to vibrate or issue sound waves at a frequency;
- and
- an additional cleaning device to clean the housing of the sensor, wherein the additional cleaning device is an electrostatic precipitator to clean the housing of the sensor.
Dependencies are inferred from the claim text.