如何計算波形曲線通過特定電壓的時間點

在AEDT報告當中，如果要顯示波形通過特定電壓的所有時間點可以採用Y marker。但Y marker無法匯出時間點數值到CSV當中。一個解決方法是先按右鍵輸出.csv，再執行下面的script將所有時間點數值輸出到crossTime.csv。

# User Input
threshold = 0.5
wavform_path = 'D:/demo/Transient Voltage Plot 1.csv'

# Don't Change Code Below 
import os
os.chdir(os.path.dirname(__file__))

with open(wavform_path) as f:
    data = f.readlines()

time, voltage = data[0].split(',')

waveform = []
for i in data[1:]:
    try:
        t, v = i.strip().split(',')
        waveform.append((float(t), float(v)))
    except:
        pass

crossT = []
for n, (t, v) in enumerate(waveform[:-1]):
    if v == threshold:
        crossT.append(t)
    else:
        t_1, v_1 = waveform[n+1]
        if v < threshold < v_1 or v > threshold > v_1:
            x = t + ((t_1-t)*abs((v-threshold)/(v_1-v)))
            crossT.append(x)

with open('crossTime.csv', 'w') as f:
    f.writelines(time + '\n')
    f.writelines('\n'.join(map(str, crossT)))

(圖一)計算通過特定電壓的時間