针对现阶段无创血压检测仪体积较大、不易携带，且需要专业人员操作的问题，提出了一种无创血压检测系统。系统基于脉搏波传导和光与物质相互作用的原理，提取并分析了光与手腕处的皮肤作用后的光电信号模量，推算出动脉血液流速，即脉搏波传导速度，从而进一步推算出血压值。试验结果表明，本系统与传统血压检测仪的平均相对误差在5 %以内，具有一定的可行性。该系统具有体积小、成本低、测量方式简单、易携带、可做大数据管理等特点，可用于人体血压的实时监测及健康管理。

Aiming at the problem that the non-invasive blood pressure measuring instrument is large and inconvenient to carry and needs professional operation, this paper proposes a non-invasive blood pressure measuring system. Based on the principle of pulse wave conduction and the interaction between light and matter, the system extracts and analyses the photoelectric signal modulus of the skin at the wrist. The arterial blood flow velocity is then calculated, that is, the pulse wave conduction velocity. Finally, the hemorrhagic pressure is calculated. We have tested the performance of the system. The experimental results show that the average relative error between the system and traditional blood pressure measuring instruments is less than 5%. The system is helpful to realize real-time blood pressure monitoring. It has the characteristics of small size, low cost, simple measurement method, easy to carry and large data management. It can be used for human health management.