I have plans on constructing a wireless sensor that would sense the quality changes like aroma, taste of packed food products. It'd be great if someone could help me with the approach.
Though , I am not sure about the offshelf(commercial) available wireless aroma/taste sensors, We can design and develop wireless sensing system by interfacing the sensors(aroma,.....chemical sensors,....) with XBee radio module for wireless operations. The conditioning circuit can transmit the sensed data in ADC form. The collected (sensed) data can be anayzed for detecting appropriate color, smells,..etc.,
Hi, have a look of the FP6 project called goodfood.
http://www.goodfood-project.org/
This is the abstract of the project:
The GoodFood Integrated Project, presented within the IST thematic area of EC VI FP, aims at developing an innovative tool based on MST/MNT and IST technologies for the full safety and quality assurance along the complete food chain in the agrofood industry .
good luck!
there is an expert ([email protected]) from Institut für Fleichforschung in Germany who developed a Raman sensor (not wireless). However, there will be a wireless sensor available soon from a global vendor in 2014.
Though , I am not sure about the offshelf(commercial) available wireless aroma/taste sensors, We can design and develop wireless sensing system by interfacing the sensors(aroma,.....chemical sensors,....) with XBee radio module for wireless operations. The conditioning circuit can transmit the sensed data in ADC form. The collected (sensed) data can be anayzed for detecting appropriate color, smells,..etc.,
What about infrared spectroscopy? CCDs in ordinary mobile phones have pretty good IR sensitivity if you remove the IR filter (which is included so that webcams don't see through clothes). Then you need an IR light source and voila, you have an IR spectroscopy system.
In my opinion a possibility to detect smells and colors of the substances is THz-TDS spectroscopy, is a molecular spectroscopy
It is dificult to build sensors sense with aroma and taste of packed food products. The sensors working on the base of interaction between the sensor materials and arome and taste could be produced..
Please google "Graphene-based quantum capacitance wireless vapor sensors". In principle this graphene sensor can also be applied for monitoring the pH changes of the food. Hope this answer would be of helpful...
Intelligent film can change the colour of spoiled food. it is inexpensive as well.
Hi,
search for "Heinar Schmidt" is using Raman to see if bacteria grow; you want a hendheld spectrometer for your application.
Similar sensors are becoming available for sensing ethylene (c2sense.com) which utilize carbon nanotubes. For this application I would image you would need low, power, and flexible if going to be close to the product. If you are looking to sense/detect a number of compounds you should research cross-reactive arrays/e-nose which use multiple functionalized sensors or sensors of different modalities combined with machine learning techniques.
Gas sensors are already available which can be used for aroma testing by modification. pH meters with wires are available which by modification can be converted in to wireless sensors of quality.
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