Transcript of "A passive radio frequency p h-sensing tag for wireless food-quality monitoring"
A Passive Radio-Frequency pH-Sensing Tag for
Wireless Food-Quality Monitoring
Here we are presenting a new method, suitable for food quality management by
wirelessly monitoring pH level changes in food with a flexible pH sensor which is embedded in a
battery less radio-frequency (RF) transponder. Conventional radar systems comprise a collocated
transmitter and receiver, which usually share a common antenna to transmit and receive. A
pulsed signal is transmitted and the time taken for the pulse to travel to the object and back
allows the range of the object to be determined. The wireless sensor tag includes a flexible pH
sensor based on miniature iridium oxide and silver chloride (AgCl) sensing electrodes integrated
on a deformable substrate, and battery less wireless communication circuitry. The sensor tag and
reader system is designed to achieve convenient, long-term, and on-demand wireless in situ
monitoring of food quality, especially for large-quantity applications and continuous monitoring
from place of production to retail stores.
In this existing system, there is device to monitor or to check the Ph rate of a food
material that can be used only in research labs. The existing method which not having the
wireless communication to transfer the data. So we go to our proposed system.
In this project, we are going to pH sensor system that provides a direct and convenient
means to monitor produce/food quality to address food safety and waste issues. Here we connect
the pH sensor with microcontroller, which would receive the data signals from sensor for that we
have to place the sensor in the surface of the food material to sense the pH level. The status will
be sent through zigbee transceiver to the PC section which connected with the zigbee. The status
also been shown in LCD.
8051 Microcontroller and power supply
The system can be used in food processing unit
The system can be used in homes and hotels
Low cost and Reliable
Easy to use