System for checking filter of air cleaner for automobiles
AssigneesHyundai Motor Company, Daeki Corporation
InventorsYounghak Jang, Woomin Jung, Minyong Park, Changho Lee
Life of this patent
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Abstract
A system recognizes a check-up time of a filter of an air cleaner. The system includes a power unit that supplies power to the system, a pressure sensor that measure pressure of a filter, at an outlet connected with a filter unit, a conversion circuit that converts the measured value into a predetermined type, a processor that controls the measurement period of the pressure sensor and receives and compare the measured value converted by the conversion circuit with a predetermined reference value, and a display unit that displays a filter replacement period.
Claims7
A system for determining a check-up time of an air filter of an air cleaner, the system comprising:
- a filter unit including an air filter;
- a power unit supplying power;
- a pressure sensor measuring pressure of air passing through the air filter, the pressure sensor being disposed at an outlet connected of the filter unit;
- a conversion circuit that converts a measured pressure value into a measured pressure signal;
- a processor that controls a measurement period of the pressure sensor and receives and compares the measured pressure signal converted by the conversion circuit with a predetermined reference value;
- and
- a display unit that displays a filter replacement period based on a result of the comparison in the processor;
- wherein a measurement of the pressure is performed for a predetermined number of times and the processor counts the number of measured pressure signals that are above the predetermined reference value;
- and
- wherein the display unit is turned on when the counted number of the measured pressure signals that are above the predetermined reference value reaches a predetermined specific number of times.
Dependencies are inferred from the claim text.