Apparatus for measuring odor
AssigneesHyundai Motor Company, Kia Corporation
InventorsTae Hee Lee, Dae Un Sung
Life of this patent
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Abstract
An apparatus for measuring an odor is capable of accurately presetting a baseline that is utilized as a reference value for an output value of an odor sensor, of computing a delta value that represents a difference between the preset baseline and an output value of the odor sensor that senses odor-measurement-subject gas, and of determining the computed delta value as a changed amount of the odor-measurement-subject gas. With the apparatus, the accuracy of odor measurement can be improved.
Claims20
An apparatus for measuring an odor, the apparatus comprising:
- a pre-chamber:
- a pure gas supply line coupled to one side of the pre-chamber;
- a gas inflow line configured to introduce odor-measurement-subject gas, the gas inflow line being coupled to the one side of the pre-chamber;
- a fresh air supply line coupled to the one side of the pre-chamber;
- a first valve mounted on the pure gas supply line;
- a second valve mounted on the gas inflow line;
- a third valve mounted on the fresh air supply line;
- an odor sensor chamber, the pure gas supply line, the gas inflow line, and the fresh air supply line being coupled to the odor sensor chamber so as to be enabled to be open into the odor sensor chamber;
- an odor sensor mounted inside the odor sensor chamber;
- and
- a controller configured to set a baseline that represents a reference value for an output value of the odor sensor that senses the odor-measurement-subject gas, based on a signal that results from the odor sensor sensing pure gas or fresh air that is supplied to the odor sensor chamber.
An apparatus for measuring an odor, the apparatus comprising:
- a pre-chamber;
- a pure gas supply line coupled to one side of the pre-chamber;
- a gas inflow line configured to introduce odor-measurement-subject gas, the gas inflow line being coupled to the one side of the pre-chamber;
- a first valve mounted on the pure gas supply line;
- a second valve mounted on the gas inflow line;
- a first odor sensor chamber, the pure gas supply line and the gas inflow line being coupled to the first odor sensor chamber so as to be enabled to be open into the first odor sensor chamber;
- a first odor sensor mounted inside the first odor sensor chamber;
- a second odor sensor chamber having a structure in which a fresh-air inlet port is positioned in one side of the second odor sensor chamber, and a fresh-air outlet port positioned in an other side of the second odor sensor chamber, the second odor sensor chamber being separately mounted at an outside position where fresh air is seamlessly introduced;
- a second odor sensor mounted inside the second odor sensor chamber;
- and
- a controller configured to set a baseline that represents a reference value for an output value of the first odor sensor that senses the odor-measurement-subject gas, based on a signal that results from the first odor sensor sensing pure air that is supplied to the first odor sensor chamber or a signal that results from the second odor sensor sensing the fresh air that is supplied to the second odor sensor chamber.
Dependencies are inferred from the claim text.