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Read-Sensor-Resistances
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Change the font size as needed, will do input

This commit is contained in:
Ryan Xu 2023-03-05 16:36:10 -08:00
parent 81d1b12079
commit 3b45ba81cc
2 changed files with 11 additions and 21 deletions
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19
read_arduino.py
View File

@ -44,19 +44,9 @@ def read():
writer.writerow(header)
f.close()
while True:
#dat_list = np.random.randint(0, v_in * 1000, SENSORS_MAX) # create a randomized voltage data
dat_list = np.random.randint(0, v_in * 1000, SENSORS_MAX) # create a randomized voltage data
# take only the nonzero indices, and truncated to two decimal places to "filter" out some hardware errors
#dat_sel = np.trunc((np.take(dat_list, sensor_ports) / 1000) * 10**2) / 10**2
'''ser = serial.Serial(port)
ser.flushInput()
while True:
try:
ser_bytes = ser.readline()
decoded_bytes = float(ser_bytes[0:len(ser_bytes)-2].decode("utf-8"))
except:
print("Keyboard Interrupt")
break'''
#dat_sel = np.trunc((np.take(decoded_bytes, sensor_ports) / 1000) * 10**2) / 10**2
dat_sel = np.trunc((np.take(dat_list, sensor_ports) / 1000) * 10**2) / 10**2
r_arr = np.take(refRes, sensor_ports) * (v_in / dat_sel - 1) # *2 <-- change with actual formula for ammonia concentration
# created a new array to convert resistance values to sci notation
r_arr2 = np.empty(len(r_arr), dtype=object)
@ -91,17 +81,12 @@ def read():
f.close()
while controller.isOpen():
try:
#controller.flushInput()
read_data = controller.readline().decode("utf-8")
# use numpy so it can make list calculations easier (and possibly faster)
dat_list = np.asarray(json.loads(read_data), dtype=np.float32)[:SENSORS_MAX]
#ser_bytes = controller.readline()
#decoded_bytes = float(ser_bytes[0:len(ser_bytes)-2].decode("utf-8"))
#dat_sel = np.trunc((np.take(dat_list, sensor_ports) / 1000) * 10**2) / 10**2
dat_sel = np.take(dat_list, sensor_ports)
# if we decided to switch back to analogRead(), replace this line of comment to the algorithm to something like the commented line below
# dat_sel = np.take(dat_list, sensor_ports) * v_in / resolution
# take only the nonzero indices, and truncated to two decimal places to "filter" out some hardware errors
#dat_sel = np.trunc((np.take(dat_list, sensor_ports) / 1000) * 10**2) / 10**2
r_arr = np.take(refRes, sensor_ports) * (v_in / dat_sel - 1) # *2 <-- change with actual formula for ammonia concentration

13
serial_plotter.py
View File

@ -76,18 +76,23 @@ class SerialPlotter:
self.sensorsData[i].append(row[i])
# plot a line
# round the number to scientific notation
self.axs.plot(self.timeStamps[i],self.sensorsData[i], color=self.colors[i],
self.axs.plot(self.timeStamps[i], self.sensorsData[i], color=self.colors[i],
label=f'sensor {i + 1}, latest: {np.format_float_scientific(self.sensorsData[i][-1], precision = 2)} $\Omega$')
self.axs.set_xlabel('Time (seconds)')
self.axs.set_ylabel(u'Resistance ($\Omega$)')
# Make the font size of values placed on x-axis and y-aixs equal to 16 (large enough)
plt.xticks(fontsize = 16)
plt.yticks(fontsize = 16)
# make the label of two axes large enough
self.axs.set_xlabel('Time (seconds)', fontsize = 15)
self.axs.set_ylabel(u'Resistance ($\Omega$)', fontsize = 15)
i += 1
self.timeElapsed += 1 # increment time
# Acknowledgement: https://stackoverflow.com/a/13589144
handles, labels = self.axs.get_legend_handles_labels()
by_label = dict(zip(labels, handles))
self.axs.legend(by_label.values(), by_label.keys(), loc='best')
self.axs.legend(by_label.values(), by_label.keys(), loc='best', fontsize = 15) # Make the legend on graph large enough
except:
traceback.print_exc()