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Commit d4de1aeb authored by xinyang8's avatar xinyang8
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Update notebook

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......@@ -81,8 +81,8 @@ In today's meeting, we modified our subsystem expectations. Data storage subsyst
# 2022/3/28
Today, we participated in the Pressure Data Acquisition subsystem verification by helping establish the pressure sensor’s linear response zone. Now the Pressure Data Acquisition subsystem can read valid pressure values and the circuit can convert resistance value to voltage values. One of the key problems is to establish a linear response zone for the pressure sensor so that we can decide the validity of pressure data later in the signal processing stage and also build a force/pressure to voltage relation based on this. Due to the limits in the lab, we decided to approach this problem by filling up a water cup with water gradually and building a plot with the voltage values read and amount of water in the cup. As seen in the figure, the cup itself is weighing 4.5 gram, and we fill the cup each time with ¼ cup of water which is roughly 60 milliliter until the cup is full which contains 250 ml of water.
![](weighing-cup.jpeg)
![](cup_weight.jppg)
![](weighing_cup.jpeg)
![](cup_weight.jpg)
I also participated in the Bluetooth Data Transfer subsystem and User Interface subsystem to establish bluetooth connection. Bluetooth Data Transfer subsystem can also be enabled and connect to a third party application. My next step will be to continue to work on the bluetooth module and verify data flow acquired by the sensor can be transmitted to our frontend application. I will also need to build a frontend script that handles the input and convert data into a plot. The last thing needed to do is to build a Data Storage subsystem that can store the data when bluetooth function is disabled.
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