BME100 f2016:Group10 W1030AM L3
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LAB 3 WRITE-UP
Descriptive Stats and Graph
Graph showcases the heart rate average of both devices with an error bar of standard deviation.
T-Test Graph for Temperature (Paired)
Design Flaws and Recommendations
In evaluation of the Gold Standard and spree headband Data it becomes clear that the Sree headband is with in accurate measurements in terms of Heart Rate. There was no significant difference between collected heart rate data by a pulse oximeter and the Spree headband. These findings were in fact within a statistically acceptable range. In contrast. the data collected for temperature by the Spree headband and a thermometer showed a notable difference. One possibility for this issue could have been that the Spree headband collects temperature data on the head as opposed to collecting core temperature samples. In contrast a thermometer data is collected by controlled internal means. Another possible factor in data collection error for the Spree headband is perspiration effects on the mechanism itself. One possible solution for this issue could be a more absorbent headband to aid in wicking moister away from the mechanism. A final factor in temperature error collection for the Spree headband could be exposure to outside elemental effects surrounding the device. If the ambient temperature reaches freezing the skin temperature of the individual with be effected as well, and in turn possibly effecting the information collected. One possible solution would be to relocate the band from the forehead to a more temperature controlled area such as inner arm.
Experimental Design of Own Device
Experimental Design for Rebound Tips
Comfort- The subjects will walk with crutches a total distance of 100 meters on a smooth, flat, hard surface. First they will walk on our tips for 100 meters Their opinions will be given on a review sheet on a scale of satisfied, somewhat satisfied, neutral, somewhat dissatisfied, and dissatisfied. Questions aimed to the subjects will include:
Comfort- The subjects will walk with either the cane or walker for a total distance of 100 meters on a smooth, flat, hard surface. First they will walk on our tips for 100 meters, then walk on manufacturer tips. Their opinions will be given on a review sheet on a scale of satisfied, somewhat satisfied, neutral, somewhat dissatisfied, and dissatisfied. Questions aimed to the subjects will include:
Performance- 10 subjects from the Crutches group and 10 subjects from the Walkers/Canes group at random choosing will test the tip in a variety of environments and surfaces on all three aids: crutches, walkers and canes. The environments tested on will include dirt, gravel, curved surfaces, sidewalks, and asphalt, all in both dry and wet conditions. Rigidity, deformability, stability, and the coefficient of friction will be tested on the product.