Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 12 | heat exhaustion device for construction workers |
Danny Schaub Tongli Zhou Zackary Haycraft |
Prannoy Kathiresan | design_document1.pdf final_paper1.pdf photo1.jpg photo2.jpg presentation1.pptx proposal1.pdf video |
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| # Heat Exhaustion Detection Team Members: - Zack Haycraft (Zackary3) - Tongli Zhou (tongliz2) - Danny Schaub (dschaub2) # Problem When working in certain industries such as factory production lines, construction and power plants high heat environments increases the risk of heat stroke or heat exhaustion, which puts the safety of the workers at risk. Generally, by the time the person is aware of the symptoms of heat exhaustion, it is too late. We have talked to some construction workers near campus, and most don’t possess any wearable device that tracks their health information. Besides, most smart watches on the market are more suitable for heartrate and calorie tracking during exercise, rather than tracking and extracting reliable information critical to construction workers in more extreme environment. # Findings There are scientific findings that indicate the relationship between sweat chloride concentration and whether the individual is experiencing heat stroke: HS patients have sweat chloride concentration of around 5.3 mmol/L, while it is higher than 20 mmol/L for normal people. (https://www.sciencedirect.com/science/article/pii/S1658361213001029) # Solution To provide this extra layer of safety the device will be a wearable device that the individual will be able to wrap around their arm and as the individual sweats, the sweat will pass through a duct and the conductivity of the sweat will be measured. A temperature sensor will also be used for temperature correction of the sample. This will provide a measurement of the electrolytes present in the individuals sweat and if the electrolyte concentration reaches below an established limit the device will light LEDs to indicate to the individual and other workers in the area that the individual needs to be removed from the environment and replace electrolytes. As an extra precaution a gyroscope sensor will be used to measure the individual’s activity level as well as a temperature and humidity sensor to monitor the hazardous level of the outside conditions. # Solution Components ## Subsystem 1- Power Supply -Battery powered, 2 AA batteries ## Subsystem 2-Conductivity Sensor -The conductivity sensor will be made using two electrodes in conjunction with an AC signal and the voltage drop across the probes will be proportional to electrolyte concentration. Stainless steel electrodes should suffice -H bridge using switching MOSFET for AC signal (VO617A ) ## Subsystem 3- Microcontroller -The microcontroller will take in the temperature and conductivity data to calculate salt concentration and actuate the indicator light when the threshold is crossed. (Raspberry Pi pico) ## Subsystem 4- gyroscope -The gyroscope will estimate the work done by the worker and provide supplemental data to the raspberry Pi for analysis. -accelerometer and gyroscope sensor (MPU-6050) ## Subsystem 5- IOT device -Use an IOT device to collect information from the sensors on the wearable band, use them to determine when to allow the worker to take a break for rest and get electrolytes. ## Subsystem 6- Temperature and humidity sensor -This will provide the user with a visual indication of the danger level of the environment utilizing the heat index -heat index information (https://www.nalc.org/workplace-issues/body/OSHA-All-in-One-Heat-Guide.pdf) -sensor (DHT11) # Criterion For Success -The device can accurately measure the electrolyte concentration of a sample within +/- 10% error -the device can accurately measure the temperature of a solution sample within +/- 10% error -The device will illuminate when presented with a solution below the concentration threshold |
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