BME100 s2016:Group2 W1030AM L3
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LAB 3A WRITE-UP
Heart Rate (BPM)
The Spree Headband, while great in concept, features many design flaws. The headband is not aesthetically pleasing; most people would not be willing to wear the headband out in public or to the gym. The headband leaves marks on the forehead of the wearer, making sure everyone knows the person has one long after they take it off. This problem could be fixed by making the headband softer and more pliable, this would also make it more comfortable. The temperature sensor in the headband was unreliable at best, especially outside. The front of the headband was open to the air, giving temperature readings colder than the actual temperature of the wearer's body. This could be fixed by enclosing and insulating the Spree. Besides being colder than the actual subject, it would stubbornly read a consistent and inaccurate temperature. The Spree often disconnected from the phone. This could be avoided by keeping the phone close to the headband, but the Bluetooth technology could be updated. The heart rate sensor in the Spree was all over the place, high and low. This could be due the location of the sensor being on the forehead instead of near larger arteries, like in the wrist. The app was not user-friendly and occasionally crashed. The setup of the app needs to be reorganized to make it easier to use and start recording. The Spree headband was, overall, fraught with design flaws.
LAB 3B WRITE-UP
Target Population and Need
The group's device will target populations of people in the United States, and other well-developed countries, who are prone to seizures and the family of those who are seizure-prone. The reason why well-developed countries are being targeted is because the device is estimated to have a relatively high cost. These seizure groups include people who have traumatic brain injury, epilepsy, infants with Phenylketonuria, and other patients who are at risk. The current estimate of people with epilepsy in America is 2.2 million people. There is a higher possibility of epilepsy developing in children and young adults. Therefore, the device will target from these two age groups up to elderly adults as well. The device will record the brain activity of the patient and send an alert to the patient and to the patient’s nearby family along with the emergency status based on what type of seizure it is. The patient will have the opportunity to set the device to contact the people of their choosing in case of seizure emergency. These contacted people could be the hospital or family.
Epilepsy affects people’s lives, because seizures are caused in epileptic patients due to abnormal brain activity. Therefore, there is a need for people with epilepsy to live a normal day-to-day life without having to worry or have family members and friends worry about unexpected seizures affecting routines. It would be very helpful for people with epilepsy to have warnings about their seizures before they experience them, because otherwise they can be in life-threatening situations. For example, if an epileptic patient was driving on the highway, a device that would warn them of an incoming seizure would be very helpful, because then the patient could pull over in order to not put their own life and other lives in danger of a road accident.
Problem Understanding Form
Problem Understanding Form
Aesthetically pleasing: People with the need for this device would be more likely to purchase the device and therefore satisfy their need if it is aesthetically pleasing.
Battery life: In order for the device to function properly and for as long as possible, it must have a significant amount of battery life.
Non-invasive sensors: The device needs sensors in order to record the brain activity of users; however, the sensors should be non-invasive, because the current technology is invasive and therefore very expensive.
Wireless: The device should be able to function while not being connected to an input source (for example, electricity) for the sake of the user’s maneuverability.
Adjustable:The device needs to be adjustable so that it can fit a wide range of heads that are different shapes and sizes.
Description of the Experiment
Part 1: The SafeCap
2. The mock brain will then produce abnormal rhythms to see how well the SafeCap can monitor the abnormal brain waves.
3. The SafeCap will be hooked up to a computer that records the time in which the device identifies the abnormalities and the amount of time it takes to transmit the warning signal.
4. This test will also be run for at least 30 trials for the brain to indicate the precise amount of time is takes the device to transmit the warning signal upon identification.
6. The mock brain will then produce abnormal rhythms to see how well the electroencephalogram test (EEG) can monitor the abnormal brain waves.
7. The EEG will be hooked up to a computer that records the time in which the device identifies the abnormalities and the amount of time it takes to transmit the warning signal.
8. This test will also be run for at least 30 trials for the brain to indicate the precise amount of time is takes the EEG to transmit the warning signal upon identification.
Note: The highlighted yellow sections are the 19 out of 30 times that the SafeCap performed quicker than the EEG test.