Fuada Syifaul, Särestöniemi Mariella, Perera Malalgodage Amila Nilantha, Katz Marcos
Centre for Wireless Communications, Faculty of Information Technology and Electrical Engineering, University of Oulu, Oulu 90570, Finland.
Research Unit of Health Sciences and Technology, Faculty of Medicine, University of Oulu, Oulu 90570, Finland.
Data Brief. 2024 Jul 15;55:110749. doi: 10.1016/j.dib.2024.110749. eCollection 2024 Aug.
The utilization of actual biological tissue (e.g., pork meat samples) and tissue-mimicking phantoms for optical-based in-body data and energy transfer studies is crucial. Near-infrared (NIR) light, a part of the light spectrum that falls between visible light and infrared, is highly advantageous as a carrier for data transmission due to its superior ability to penetrate biological tissue, for instance, the human body. Using pork meat samples as a propagation medium for prolonged experiments is challenging due to the deterioration of meat quality caused by drying in the temperature chamber. Typically, a controlled-temperature chamber can be utilized to warm the tissue samples to 37 °C. Some experiments need to be carried out over long periods, in some cases exceeding one hour, including the demonstration of transmitting large-size data (e.g., high-definition images or videos) in real-time through biological tissue using NIR LED. Moreover, for statistical analysis, some experiments need to be repeated, therefore degradation of the tissue sample should be avoided. Furthermore, experiments may also encompass investigations into optical wireless power transfer (OWPT) conducted on biological tissues under NIR illumination and employing energy harvester-based commercial photovoltaic cells (PV) at the receiving ends, which would require a long time to charge the storage (e.g., battery or supercapacitor) fully. Using phantoms for such an experiment is also not straightforward, requiring careful consideration, such as standardization issues. One possible approach to address this challenge is to conduct experiments in a free-space environment (e.g., sample-free) while guaranteeing that the optical power received in free-space is equivalent to that obtained through biological tissue. This can be achieved by carefully controlling the LED's current and arranging the optical channel's distance to achieve comparable results. The received optical power is the primary parameter for comparing free-space and biological tissue setups. This dataset provides settings for NIR LEDs ( = 375 mW and λ = 810 nm), allowing in-body communication experiments in a free-space environment. The LED's current settings in this dataset (free-space) are equivalent in comparison to those used in a test-bed using biological tissue with 5 (five) different variations of LED currents (i.e., 500 mA, 400 mA, 300 mA, 200 mA, and 100 mA). The dataset consists of six pork meat samples with different thicknesses and fat-muscle layer compositions, resulting in 36 data points. This dataset holds significant potential for reuse in any biomedical research, particularly in the fields of in-body communication and energy transfer utilizing light.
利用实际生物组织（如猪肉样本）和组织模拟体模进行基于光学的体内数据和能量传输研究至关重要。近红外（NIR）光属于光谱中位于可见光和红外光之间的一部分，由于其穿透生物组织（如人体）的能力更强，作为数据传输载体具有很大优势。使用猪肉样本作为长时间实验的传播介质具有挑战性，因为温度箱中的干燥会导致肉质变质。通常，可以利用控温箱将组织样本加热到37°C。一些实验需要长时间进行，在某些情况下超过一小时，包括通过近红外发光二极管（NIR LED）实时通过生物组织传输大尺寸数据（如高清图像或视频）的演示。此外，为了进行统计分析，一些实验需要重复进行，因此应避免组织样本的降解。此外，实验还可能包括在近红外照明下对生物组织进行的光无线功率传输（OWPT）研究，以及在接收端使用基于能量收集器的商用光伏电池（PV），这需要很长时间才能将存储设备（如电池或超级电容器）充满电。使用体模进行此类实验也并非易事，需要仔细考虑，如标准化问题。解决这一挑战的一种可能方法是在自由空间环境（如无样本）中进行实验，同时确保在自由空间中接收到的光功率与通过生物组织获得的光功率相等。这可以通过仔细控制发光二极管的电流并安排光通道的距离来实现，以获得可比的结果。接收到的光功率是比较自由空间和生物组织设置的主要参数。该数据集提供了近红外发光二极管的设置（ = 375 mW，λ = 810 nm），允许在自由空间环境中进行体内通信实验。与在使用生物组织的测试平台中使用的发光二极管电流设置相比，该数据集中（自由空间）的发光二极管电流设置具有5种（五种）不同的变化（即500 mA、400 mA、300 mA、200 mA和100 mA）。该数据集由六个具有不同厚度和脂肪 - 肌肉层组成的猪肉样本组成，产生36个数据点。该数据集在任何生物医学研究中，特别是在利用光的体内通信和能量传输领域，具有很大的重用潜力。
