Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 59 | Automatic Titration System |
Jack Viebrock Jason Flanagan Matthew Weyrich |
Selva Subramaniam | design_document2.pdf final_paper1.pdf photo1.png photo2.png presentation2.pdf proposal2.pdf video |
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| # Automatic Titration System ## Team Members: - Jack Viebrock (Jackav3) - Jason Flanagon (Jasonpf2) - Matthew Weyrich (Weyrich4) ## Problem Titration is a time-consuming process that can introduce large amounts of error from the manual procedure, such as improper burette reading, accidental extra analyte added, and guessing on the endpoint with a color indicator. Automatic titration systems can help reduce this error but cost over $3,000, restricting their application to wealthy labs. ## Solution We will create a lower-cost automatic titration system to bridge this gap in the market to make it affordable to have high-quality titration data accuracy over manual methods ## Solution Components: ### Subsystem 1: Sensors PH Module Probe Detection and Acquisition Monitoring Control Industrial Inspection Tool PH014 PH Electrode Probe: Amazon.com: Industrial & Scientific (https://www.amazon.com/Detection-Acquisition-Monitoring-Industrial-Inspection/dp/B08XMBGCM8/ref=asc_df_B08XMBGCM8/?tag=hyprod-20&linkCode=df0&hvadid=675719866680&hvpos=&hvnetw=g&hvrand=3781607236679164999&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1016367&hvtargid=pla-2246775686040&psc=1&mcid=c6b1279b2a033a4ebc0bcac78d93f067 ) The titration system will not need the use of an indicator. To determine the amount of titrate to add to the solution, a pH sensor will be used. This sensor will connect to microcontroller, indicating the current acidity of the solution on a scale of 0-14, where 7 is the base value. ### Subsystem 2: Power System We will be using an AC (120V, 60Hz) wall to DC (dependent on final components and circuits) adapter, additionally we will need to use dc-to-dc adapters for the varying dc voltages needed for the varying subsystem devices including the microcontroller (5.5V), stepping motor (2.8V). With those dc-to-dc converters, we can make our own PCBs or order prefabricated devices to perform the conversion. If time permits, we may dive into a battery system to support portability. ### Subsystem 3: Control PIC PIC® 18F Microcontroller IC 8-Bit 48MHz 32KB (16K x 16) FLASH 28-SOIC The microcontroller will be taking the live output voltage from the pH sensors and will control the speed and precision of the titrate pump accordingly. The microcontroller will also be in-charge of starting and ending the pump when the start button is pressed. Volume amounts per step of the motor will be pre-determined and calibrated so the microcontroller can determine volume. ### Subsystem 4: Motor Our implementation of an automatic titration system will imitate a burette by using a syringe driver, which is a stepper motor and linear actuator to precisely administer titrant with a syringe. The motor will need to be connected to the PCB so it can be controlled through the microcontroller. This is a potential stepper motor we could use: Buy 17N19S1684MB-200RS Nema 17 Non-captive Linear Stepper Motor Actuator 48mm Stack 1.8 Deg 1.68A Lead 8mm/0.31496" Lead Screw 200mm Online - Oyostepper.com (https://www.oyostepper.com/goods-1162-Nema-17-Non-captive-Linear-Stepper-Motor-Actuator-48mm-Stack-168A-Lead-8mm031496-Length-200mm.html) which has 0.04 mm lead/step to allow us to compress the syringe exactly. The syringe will then be attached to a plastic tube with a pointed end to minimize drop size, thus further increasing precision on titrant dispense. ### (Stretch Goal) Subsystem 5: Display of Data with Graph The main data output to user will be a live reading of the pH, but this stretch goal will display a common graph used in titrations is called a “titration curve”. If we can fit it in the budget and time constraints, we will add this functionality to display this graph. Amazon.com: Treedix 3.5 inch TFT LCD Display 320 x 480 Color Screen Module Compatible with Arduino UNO R3 Mega2560 : Electronics (https://www.amazon.com/Treedix-Display-Screen-Arduino-Mega2560/dp/B0872S57HG?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A22NPL1KB8AOV0 ) An Arduino Uno will be used along with an LCD display to show the current pH of the solution. A live graph will be created using the Arduino Serial Plotter to visually show the live data from the pH sensors. ## Criterion For Success (For safety with demos, we can do a food-safe vinegar titration to avoid any harmful chemicals) - Primary Success: Repeat titration with only 0.5% deviation between measurements - Secondary Success: Provide a decrease in 30% of time taken over a manual titration. |
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