Pakistan Manufactured Automated Injection Pump

In the world of engineering or even in everyday life decisions, accuracy and precision play a vital role since a minor error can cost you billions of dollars or even cost you a life. That's why the world is moving more towards robotics and machinery revolving around controls and artificial intellige

Project Title

Pakistan Manufactured Automated Injection Pump

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

In the world of engineering or even in everyday life decisions, accuracy and precision play a vital role since a minor error can cost you billions of dollars or even cost you a life. That's why the world is moving more towards robotics and machinery revolving around controls and artificial intelligence. Even manual syringes are being rapidly replaced by programmed syringe pumps to reduce human error in everyday chemical mixings or dosages. Such automated portable designs are targeted to provide precise, controlled, and continuous delivery of fluid, along with our main applications being revolving in the non-medical department. Such a device may also be used in analytical chemistry, for the process of controlling the exact number of reagents in the synthesis and analysis of chemical compounds. Additionally, transporting chemicals in such devices will be very beneficial in labs. During experimentation, it is very necessary to use a precise amount of chemicals. This device could potentially improve our ability to monitor a reaction process.

Project Objectives

• Manufacturing Pakistani Originated Injection Pump
• Reducing Costs
• Increasing Reliability by effective Hardware Assembly
• Mixing of chemicals at ml levels.
• Aiming for electrical stability and mechanical strength.

Project Implementation Method

The injection pump utilizes the combined operation of software-implemented circuitry, and 3D modeled pumping mechanism to convert the stepping motor pulses into linear shaft movement to push the syringe at the end. The software circuit follows the concept of a feedback loop system to control the DC Geared Motor’s rotations. It comprises of microcontroller-based Arduino programmed to control the motor through the motor driver and takes input from the Incremental Encoder placed in the feedback. The motor’s speed and direction are modified according to the desired motor output (as given through programmed Arduino) with each feedback loop sequence. Information regarding the current speed of the motor is inputted into the encoder which provides the micro-controller a sense of direction modifications. The motor is the component where the circuitry ends and is followed by the 3D mechanism. The motor has a shaft connected to its end further led on by a threaded shaft. Whole calculations are based on the motor’s speed in RPM, with each pulse defined by the shaft’s thread size i.e., thread pitch, distance traveled by piston per pitch, and volume of fluid delivered per step of the motor. 3D models have been made through Blender software, comprising of ‘Motor Casing’ to enclose the motor, which is led by the ‘Syringe Tube Casing’ in which the threaded shaft would be emerging followed by the syringe containing the fluid itself. A ‘Piston’ would also be present inside the casing which would linearly push the syringe shaft after being converted from the rotation of the screw nut on the threaded shaft. A ‘Cape’ would enclose the syringe tube followed by a thin tube with a set diameter for the fluid to flow. In the end, the circuitry would be designed through PCB, followed by the hardware assembly with SLA the material being used for 3D printing.

Benefits of the Project

• Syringe pumps allow the user to define the total volume of fluid and deliver it at an accurate speed.
• Syringe pumps are fast and easy to use.
• Economical product
• Syringe pumps help minimize the error during the instrumental analysis of a sample

Technical Details of Final Deliverable

Numerical Deliverables:

DC Geared Stepper Motor RPM = 1200 rpm
Pitch of thread rod = 0.5mm
Distance travelled my piston per pitch = pitch of thread rod/ RPM = 0.5mm/1200 = 0.00416mm
Volume of fluid delivered per step of motor = [pi(internal diameter)^2 * distance per step of piston]/4 = pi*(11.71mm/2)^2 * (0.00416mm) = 0.0448 ul per step
Steps to deliver 1 unit = 0.01ml/0.0448ul per step = 223.214 steps

Hardware Deliverables:

• replaceable fluid chamber
• SLA based 3D material
• Compact design

Final Deliverable of the Project

Hardware System

Core Industry

Transportation

Other Industries

Others

Core Technology

Others

Other Technologies

3D/4D Printing

Sustainable Development Goals

Industry, Innovation and Infrastructure

Required Resources

If you need this project, please contact me on contact@adikhanofficial.com