Non-invasive method and system for detecting quality of packaged milk

A system comprising:

• one or more communication interfaces;
• one or more hardware processors;
• and
• a memory storing instructions, which when executed by the one or more hardware processors, cause the hardware processor to:
• (i) transmit a plurality of electromagnetic waves to a capacitive Near-field communication (NFC) tag disposed on a packaged container containing milk using an NFC enabled device;
• (ii) obtain a response signal from the capacitive NFC tag in response to the plurality of electromagnetic waves transmitted to NFC tag, wherein the response signal is one of:
• a positive response and a negative response;
• and
• the positive response is indicative of a resonant frequency of the capacitive NFC tag being equal to a predefined frequency when a dielectric constant of the milk contained inside the packaged container is within a predefined range of a predefined critical dielectric constant of the milk defined using a critical capacitance value of the milk, one or more properties of the packaged container, and a predefined dielectric constant calculation formula;
• the critical capacitance value of the milk depends on potential of hydrogen (pH) values of the milk and capacitance values of the milk contained inside the packaged container;
• the predefined range of the predefined critical dielectric constant of the milk depends on the capacitance values of the milk;
• and
• the negative response is indicative of the resonant frequency of the capacitive NFC not being equal to the predefined frequency;
• and
• (iii) determine quality of the milk contained inside the packaged container based on the obtained response signal;
• and
• (iv) display the quality of the milk on the NFC enabled device.

A non-transitory computer readable information storage medium comprising one or more instructions, which when executed by one or more hardware processors, cause the one or more hardware processors to:

• (i) transmit a plurality of electromagnetic waves to a capacitive Near-field communication (NFC) tag disposed on a packaged container containing milk using an NFC enabled device;
• (ii) obtain a response signal from the capacitive NFC tag in response to the plurality of electromagnetic waves transmitted to NFC tag, wherein
• the response signal is one of:
• a positive response and a negative response;
• and
• the positive response is indicative of a resonant frequency of the capacitive NFC tag being equal to a predefined frequency when a dielectric constant of the milk contained inside the packaged container is within a predefined range of a predefined critical dielectric constant of the milk defined using a critical capacitance value of the milk, one or more properties of the packaged container, and a predefined dielectric constant calculation formula;
• the critical capacitance value of the milk depends on potential of hydrogen (pH) values of the milk and capacitance values of the milk contained inside the packaged container;
• the predefined range of the predefined critical dielectric constant of the milk depends on the capacitance values of the milk;
• and
• the negative response is indicative of the resonant frequency of the capacitive NFC not being equal to the predefined frequency;
• and
• (iii) determine quality of the milk contained inside the packaged container based on the obtained response signal;
• and
• (iv) display the quality of the milk on the NFC enabled device.