Design a Prototype for Alcohol Sensing Based on Nano-Rod
Published on 18 May 2022. Written by Sankarsan Mohanty
Drunken drive has been one of the major issues when it comes to road safety. Most of the accident happens because of a driver’s negligence. This issue can be resolved if, we have a better equipment to test the alcohol content in human blood. In this project, you will work on designing and developing a device which can easily test the alcohol content in a solution.
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As we are trying to find alcohol content in a solution, with the help of this device which helps us to detect the alcohol, and we are using here a combination of Arduino mega 2650 and seven segment display to show the output, ZnO rod, Analog to digital converter, and an Amplifier and a nano to milliamp current sensor. Which gives us a basic idea about this instrument using in this device.
In this project we are using different Nano-Rods were synthesized using hydrothermal techniques and their alcohol sensing properties were examined. Nowadays all needs device of small in size, which consumes low power, So here we are giving more focus on the size and low power consumption by decreasing the temperature.
Project Description:
ZnO is an n-type semiconductor oxide with large band gap and excitation binding energies. It received more interest to apply in gas sensing for its high sensitivity, environmental stability, simple design, non-toxicity, and low cost. In addition, ZnO is sensitive to various types of gases at relatively high temperature. The main disadvantage of ZnO as a gas sensor is the high operating temperature. Operating at high temperatures may cause adhesion and structural damaged which leads to sensor instability and response variation.
Synthesis gas sensors operated at low temperatures is demanded recently due to a reduction in required power, keep the sensor structure and decrease the danger of explosive gases detection.
Since increasing the surface area of the sensing materials raises the adsorption sites of surrounding gases, therefore, synthesis materials with the high surface area may enhance the sensing performance as well reduce the operating temperature. Recently, nanostructures of ZnO have been synthesized in an effort to enhance their performance in applications, such as nanowires, nanorods, nanobelts, quasi-one-dimensional nanostructures etc. In recent reports, porous ZnO nanostructures have attracted considerable attention from many researchers due to their unique large surface areas and high surface-to-volume ratio.
It is predicted that porous ZnO nanostructures might produce improved performance in photocatalysis and chemical sensing as the result of increasing surface area. On the other hand, despite the unique porous ZnO nanostructures that can be produced, most of the techniques actually require long preparation time (normally within hours) and complicated process or a multi-step approach. Considering the potential of the application of ZnO nanostructures, it is very important to develop a method of synthesis that is simple but produces nanostructures with high and controlled porosity. In this work, we report the microwave method as a cheap, fast and reliable synthesis method compared with conventional methods. The novelty of this work lies in its synchronized control of ethanol gas sensor performance by controlling both the size and shape of the sensor elements with low operating temperature.
Project Implementation:
Take some different amount of solution to contain and find the alcohol content in them and current using a simple Resistive circuit and plot a graph between them.
Create a circuit using a registered parallel with the ZnO Nano-rod sensor to create a sensing circuit and connect both the end in A0 and A1 respectively.
Using LabVIEW 2017 to store all continuous value of current through an array and display a real-time graph.
Using the reference graph find the unknown alcohol content in the solution.
Project Brief: After successful completion of the project, you will come up with a portable device which can sense alcohol content in any solution easily.
Software requirements:
NI SOFTWARE “ LABview 2017”: You will use this software for real-time monitoring and plotting a real-time graph between current value and alcohol content.
Arduino 1.0.5: This version will be used to make an interface between Arduino and LabVIEW.Kit required to develop Design a Prototype for Alcohol Sensing Based on Nano-Rod:
