Integration of an oxygen indicator sensor with a passive UHF band RFID tag

Here, we present a technique for the determination AQ:1 AQ:2 1 of the gaseous oxygen concentration inside packed food. It is 2 based on the use of a luminescent membrane sensitive to O 2 that 3 is optically excited and read by a smartphone. The flash of the 4 smartphone along with an optical filter is used as the light source 5 for the optical stimulation of the membrane. The luminescence 6 generated, which is quenched by the surrounding gaseous oxygen, 7 is registered by the rear camera of the same device. The response 8 parameter is defined by combining the registered intensities at 9 two different wavelength ranges corresponding to the emission 10 and the absorption peaks of the sensitive membrane. Thanks to 11 this novel response parameter, the sensitivity is increased and, 12 more importantly, the thermal dependence of the membrane 13 is significantly reduced. This approach allows the use of a 14 luminescent O 2-sensitive membrane for intelligent packaging 15 with no need of any associated electronics for its excitation 16 and reading. This means that an oxygen sensor is developed, 17 where a luminescent compound acts as an indicator, therefore 18 combining the advantages of both schemes, that is, the simplicity 19 and reduced cost of indicators with the high sensitivity and 20 accuracy of selective sensors.

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“…or month for ref. [26]. AQ:7 = Please specify the degree name for the author "Pablo Escobedo Araque," which he obtained in 2012 and 2013.…”

mentioning

confidence: 99%

Non-Invasive Oxygen Determination in Intelligent Packaging Using a Smartphone

et al. 2018

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“…Then, all the different electrical technologies that were reviewed in this section could be adapted to be used along RFID technology. Today's RFID enabled sensors are indeed numerous and include TTIs 446 , oxygen sensor/indicator 447,448 (Figure I-31), humidity sensor/indicator [449][450][451][452] or ammonia sensor/indicator 453 but also other specific chemicals 445 .…”

Section: Interactive Technologies (Rfid Rfid Enabled Sensors)mentioning

confidence: 99%

Smart and Safe packaging

Spieser

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In the second half of the 20th century, post-war Europe saw major economic growth due to national reconstructions associated with high employment, industrial mass production and demographic boom. As a consequence, generalised globalisation raised an intensified international flux of goods, services and information. Advancing technology and ever-increasing worldwide goods consumption has led to the age of plastics. Their relatively easy processability and strong physico-chemical properties such as optical, mechanical or barrier properties make them the perfect candidate for many applications in building and construction, automotive, agriculture, electronics, household leisure and sports, appliances, medical furniture and packaging. In 2018, the production of plastic in Europe reached 64.4 million tons and the packaging sector represents the largest sector demands1. The market value of the packaging sector was valued at high as 917 billion US dollar in 2019 and is still rising at an annual growth of 2.8%2.In the packaging industry, the largest part concerns food packaging3 and the overall increasing number and movement of food products however also causes an increasing amount of worldwide food waste. Around one third of the globally produced food is wasted according to the estimations of the Food and Agriculture Organization (FAO) of the United Nations4. This represents 1.2 billion tons per year which seems outrageous as the FAO also estimated in 2018 that around 800 million people were chronically undernourished in the world. Food waste is a important challenge for mankind as the world population is expected to reach 10 billion people in 2050 and feeding all of them is a great challenge.

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Integration of an oxygen indicator sensor with a passive UHF band RFID tag

Cited by 2 publications

References 9 publications

Non-Invasive Oxygen Determination in Intelligent Packaging Using a Smartphone

Non-Invasive Oxygen Determination in Intelligent Packaging Using a Smartphone

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