def export_to_mf4(self):
print("exporting to mf4")
timestamps = np.array(self.data['t'])
voltages = Signal(samples=np.array(self.data['v'], dtype=np.float32),
timestamps=timestamps,
name='Voltage',
unit='V')
currents = Signal(samples=np.array(self.data['c'], dtype=np.float32),
timestamps=timestamps,
name='Current',
unit='A')
powers = Signal(samples=np.array(self.data['p'], dtype=np.float32),
timestamps=timestamps,
name='Power',
unit='W')
capacities = Signal(samples=np.array(self.data['cap'],
dtype=np.float32),
timestamps=timestamps,
name='Capacity',
unit='AH')
mdf4 = MDF(version='4.10')
signals = [voltages, currents, powers, capacities]
mdf4.start_time = self.start_time
mdf4.append(signals, comment='Battery test: {}'.format(self.cell_id))
mdf4.save("test.mf4", overwrite=True)
return mdf4
