用于光电容积脉搏波设备特性分析的光学信号模拟器。

An Optical Signal Simulator for the Characterization of Photoplethysmographic Devices.

机构信息

Department of Information Engineering, Electronics and Telecommunications (DIET), Sapienza University of Rome, 00184 Rome, Italy.

Department of Astronautical, Electrical and Energy Engineering (DIAEE), Sapienza University of Rome, 00184 Rome, Italy.

出版信息

Sensors (Basel). 2024 Feb 4;24(3):1008. doi: 10.3390/s24031008.

DOI:10.3390/s24031008

PMID:38339729

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10857427/

Abstract

(1) Background: An optical simulator able to provide a repeatable signal with desired characteristics as an input to a photoplethysmographic (PPG) device is presented in order to compare the performance of different PPG devices and also to test the devices with PPG signals available in online databases. (2) Methods: The optical simulator consists of an electronic board containing a photodiode and LEDs at different wavelengths in order to simulate light reflected by the body; the PPG signal taken from the chosen database is reproduced by the electronic board, and the board is used to test a wearable PPG medical device in the form of earbuds. (3) Results: The PPG device response to different average and peak-to-peak signal amplitudes is shown in order to assess the device sensitivity, and the fidelity in tracking the actual heart rate is also investigated. (4) Conclusions: The developed optical simulator promises to be an affordable, flexible, and reliable solution to test PPG devices in the lab, allowing the testing of their actual performances thanks to the possibility of using PPG databases, thus gaining useful and significant information before on-the-field clinical trials.

摘要

(1) 背景：为了比较不同光电容积脉搏波（PPG）设备的性能，同时也为了用在线数据库中可用的 PPG 信号测试设备，本文提出了一种能够提供具有所需特性的可重复信号作为 PPG 设备输入的光学模拟器。(2) 方法：该光学模拟器由一块电子电路板组成，其中包含不同波长的光电二极管和发光二极管，以模拟人体反射的光；从选定的数据库中获取的 PPG 信号由电子电路板再现，并用该电路板以耳塞形式测试可穿戴 PPG 医疗设备。(3) 结果：为了评估设备的灵敏度，展示了 PPG 设备对不同平均和峰峰值信号幅度的响应，同时还研究了其跟踪实际心率的保真度。(4) 结论：所开发的光学模拟器有望成为一种经济实惠、灵活且可靠的解决方案，可在实验室中测试 PPG 设备，由于可以使用 PPG 数据库，因此可以在现场临床试验之前获得有用且重要的信息，从而测试其实际性能。