Olfactory sensing device and method for measuring odor
A method for measuring an odor in an olfactory sensing device is provided. The method includes sensing an odor using at least one odor sensor, estimating a current temperature using a temperature count coefficient of a monitor sensor, calculating an odor count coefficient variation for the at least one sensor, and measuring the odor by applying a temperature count coefficient variation corresponding to a temperature change to the odor count coefficient variation.
1. A method for measuring an odor in an electronic device including a memory, a processor, a display and a sensing unit which includes a plurality of odor sensors and at least one monitor sensor, the method comprising:
sensing, by one or more of the plurality of odor sensors, an odor around the electronic device;
obtaining, by the processor, a first odor count value for an odor sensor that has sensed the odor among the plurality of odor sensors;
obtaining, by the processor, a first odor count value variation by subtracting the obtained first odor count value from a pre-stored second odor count value of the odor sensor prior to sensing the odor, wherein the pre-stored second odor count value is stored in a first table of the memory;
obtaining, by the processor, a temperature count value from the at least one monitor sensor;
estimating, by the processor, a current temperature around the electronic device based on the obtained temperature count value;
obtaining, by the processor, a first temperature count value for the odor sensor corresponding to the current temperature by using the obtained temperature count value;
obtaining, by the processor, a second odor count value variation by subtracting a second temperature count value for the odor sensor corresponding to a reference temperature from the obtained first temperature count value, the second temperature count value being stored in a second table of the memory;
identifying, by the processor, a level of the sensed odor around the electronic device by subtracting the second odor count value variation from the first odor count value variation; and
displaying, on the display, the identified level of the sensed odor.
2. The method of claim 1 , further comprising updating, by the processor, a result of the subtraction into the second table.
3. The method of claim 1 , wherein the second table includes the odor count value for each of the plurality of odor sensors corresponding to one or more temperatures, and the temperature count value for each of the at least one monitor sensor corresponding to the at least one or more temperatures.
4. The method of claim 1 , wherein each of the first odor count value and the second odor count value is obtained by converting a resonant frequency of the odor sensor, which is changed depending on molecules of a sensed odor, into a digital value.