u_ave = cha_u_vals.mean()
i_ave = chb_i_vals.mean()
r_ave = u_ave / i_ave
u_std = cha_u_vals.std()
i_std = chb_i_vals.std()
r_std = u_std / i_std
charge_val = charge_val + TIME_STEP * i_ave
meas_time = int(time.time() - start_time)
print("t={:4}: f={:4} DC: U={:6.3f} V, I={:7.4f} mA AC: U={:8.6f} V, I={:7.4f} mA, R={:5.4f} Ohm, C={:4.1f} mAh"\
.format(meas_time, freq, u_ave, i_ave*1000, u_std, i_std*1000, r_std, charge_val))
meas_file.write("{};{};{:.3f};{:.4f};{:.6f};{:.4f};{:.4f};{:4.1f}\n"\
.format(meas_time, freq, u_ave, i_ave*1000,u_std, i_std*1000, r_std, charge_val))
session.end()
time.sleep(0.5)
else:
print('Programm wurde durch Return-Eingabe beendet.')
break
meas_file.close()
time.sleep(2)
# Damit M1K nach Beenden im sicheren Zustand
CHA.mode = Mode.HI_Z_SPLIT # Put CHA in Hi Z split mode
CHB.mode = Mode.HI_Z_SPLIT # Put CHB in Hi Z split mode
CHA.constant(0.0)
CHB.constant(0.0)
if session.continuous:
session.end()
session.remove(dev) # damit kein Problem beim erneuten Start
else:
print('kein M1K angeschlossen')
cha_u_vals = np.asarray(cha_u_vals)
chb_i_vals = np.asarray(chb_i_vals) - CURR_OFFSET/1000 # Offset Korrektur
u_ave = cha_u_vals.mean()
i_ave = chb_i_vals.mean()
r_ave = u_ave / i_ave
u_std = cha_u_vals.std()
i_std = chb_i_vals.std()
r_std = u_std / i_std
charge_val = charge_val + TIME_STEP * i_ave
meas_time = int(time.time() - start_time)
print("t={:4}: DC: U={:6.3f} V, I={:7.4f} mA, R={:6.3f} Ohm AC: U={:8.6f} V, I={:7.4f} mA, R={:6.4f} Ohm C={:4.1f} mAh"\
.format(meas_time, u_ave, i_ave*1000, r_ave, u_std, i_std*1000, r_std, charge_val))
meas_file.write("{};{:.3f};{:.4f};{:.3f};{:.6f};{:.4f};{:.4f};{:4.1f}\n"\
.format(meas_time, u_ave, i_ave*1000, r_ave,u_std, i_std*1000, r_std, charge_val))
time.sleep(TIME_STEP)
print('Programm wurde durch Return-Eingabe beendet.')
meas_file.close()
time.sleep(2)
# damit M1K nach Beenden im sicheren Zustand
CHA.mode = Mode.HI_Z_SPLIT # Put CHA in Hi Z split mode
CHB.mode = Mode.HI_Z_SPLIT # Put CHB in Hi Z split mode
CHA.constant(0.0)
CHB.constant(0.0)
if session.continuous:
session.end()
session.remove(dev) # damit kein Problem beim erneutem Programmstart.
else:
print('no devices attached')
