To improve the accuracy of ankle-brachial index measurement,a photoelectric pulse sensor is developed to detect pulses of superficial artery and arteriole net of human body using LED and silicon photocell.Employing the photoelectric pulse sensor,an ankle-brachial index measurement system is developed,which uses photoelectric pulse signal to determine the blood pressure event.Comparative experiments are carried out with gold standard auscultatory method.30 subjects including 15 healthy subjects and 15 patien...