The present study proposes an automated system to calibrate the measurement standards used for blood pressure traceability. Sphygmomanometers are the main devices used for noninvasive blood pressure measurement and are periodically verified in order to maintain their metrological characteristics. The verification is conducted using a working standard as reference. The calibration of those standards in an accredited laboratory ensures the traceability chain with known measurement errors and uncertainties, since both are a vital component for proper diagnosis of diseases like hypertension. The proposed system aims to decrease the influence of the metrologist over the calibrations, avoiding mistakes that may invalidate the results, as well as to optimize the workforce demanded for the increasing demand for calibration services. An interlaboratory comparison was also conducted to the Brazilian National Pressure Laboratory of INMETRO, the National Institute of Metrology in Brazil, for validation of the proposed method. The normalized error showed that the system produces reliable results. The results also showed that the inflation/deflation pump and valve are critical components of the system.

中文翻译：

---

血压测量可追溯性的自动校准系统

本研究提出了一种自动系统，用于校准用于血压溯源的测量标准。血压计是用于无创血压测量的主要设备，并定期进行验证以保持其计量特性。验证以工作标准为参考进行。在认可的实验室中对这些标准品的校准可确保可追溯性链具有已知的测量误差和不确定性，因为两者都是正确诊断高血压等疾病的重要组成部分。拟议的系统旨在减少气象学家对校准的影响，避免可能导致结果无效的错误，并优化对校准服务需求不断增长的劳动力。还与巴西国家计量研究所INMETRO的巴西国家压力实验室进行了实验室间比较，以验证所提出的方法。归一化误差表明系统产生了可靠的结果。结果还表明，充气/放气泵和阀门是系统的关键组件。