Daiichi Seiko: Recognizing odor molecule patterns: detected by odor sensors and sensing elements
Daiichi Seiko: Odor sensor
Different sensitive films were applied to piezoelectric thin films of lead zirconate titanate (PZT).
Odor identification mechanism:
Multiple sensing elements are mounted on the sensor chip.
Odor molecules are attached to the sensitive film that is resonating with voltage.
Obtain numerical data from changes in resonance frequency,
Odors are identified by matching patterns.
MEMS (PZT piezoelectric thin film):
This makes it possible to reduce the size and cost.
In addition, more odors can be identified by increasing the number of detector elements.
Main features:
A sensitive film is applied to the MEMS sensor to adsorb individual odor molecules.
Recognize odor molecule patterns detected by multiple sensing elements and identify odors
Small size and low cost by utilizing MEMS with piezoelectric thin film (PZT)
Identify more odors by increasing the number of sensing elements (= sensitive membranes)
Main uses:
Odor detection with home and industrial robots
Quality check of agricultural products
Care monitoring system
Final check in cleaning work
Quality check with daily products such as air fresheners
Identification and quality control for food
Identification by medical odor
The smell of cigarettes and toilets
Detection of odor intensity, sensing triggered by odor in various industries
https://www.daiichi-seiko.co.jp/japanese/product/development/smell-sensor/
https://www.daiichi-seiko.co.jp/japanese/product/pdf/cj-smell-sensor-02.pdf