Light fidelity (LiFi) and wireless fidelity (WiFi) can be applied with the same network under the different constraints, which is suitable for COVID-19 surveillance in hospitals. The LiFi network is a high-capacity and security platform. A COVID-19 surveillance system using LiFi is proposed, which consists of two switching modes: communication and surveillance. Firstly, the communication targets are to accommodate the electromagnetic interference (EMI) immunity and high-capacity and security data transmission, where secondly the COVID-19 surveillance can be applied. In operation, the up and downlink system uses a metamaterial antenna embedded by Mach Zehnder interferometer (MZI). An antenna consists of silver bars embedded at the microring center with two-phase modulators at its sides. The entangled source namely a dark soliton is applied to form the transmission, where the information security based on quantum cryptography can be managed. By using the suitable parameters, the whispering gallery modes (WGMs) are generated and the up and downlink nodes are formed. The input information is multiplexed with time to form the multiplexed signals, where the big data transmission (40 Pbit \({\mathrm{s}}^{-1})\) can be employed. By using the surveillance mode, the plasmonic antenna can be applied for temperature and electric force sensors, which can offer the disinfectant spray and temperature sensor for COVID-19 applications. The optimum plasma force sensitivity is 0.16 N kg⁻¹ mW⁻¹. The center frequencies of 191.48 THz and 199.41 THz are obtained for uplink and downlink antennas, respectively. The optimum temperature sensitivity is 0.05 rads⁻¹ °C⁻¹. In conclusion, the novelty of proposed work is that the integrated sensor circuits are employed for COVID-19 surveillance in the hospital. The fuzzy-based system is designed for critical patient monitoring alert using this surveillance and management inside the hospital for COVID-19 patients.

光保真度（LiFi）和无线保真度（WiFi）可以在不同的限制下应用于同一网络，适用于医院中的COVID-19监视。LiFi网络是一个高容量和安全的平台。提出了一种使用LiFi的COVID-19监视系统，该系统包括两种切换模式：通信和监视。首先，通信目标是要适应电磁干扰（EMI）抗扰性以及大容量和安全性数据传输，其次可以应用COVID-19监视。在操作中，上下行系统使用由Mach Zehnder干涉仪（MZI）嵌入的超材料天线。天线由嵌在微环中心的银条组成，两侧有两相调制器。应用纠缠源即暗孤子形成传输，可以管理基于量子密码术的信息安全。通过使用适当的参数，将生成回音壁模式（WGM），并形成上行链路和下行链路节点。输入信息随时间多路复用以形成多路复用信号，其中大数据传输（40 Pbit 可以使用\（{\ mathrm {s}} ^ {-1}）\）。通过使用监视模式，等离子天线可用于温度和电力传感器，可为COVID-19应用提供消毒喷雾和温度传感器。最佳等离子力灵敏度为0.16 N kg ^-1  mW ^-1。分别获得上行链路和下行链路天线的中心频率191.48 THz和199.41 THz。最佳温度灵敏度为0.05 rads ^-1  °C ^-1。总而言之，所提议工作的新颖之处在于在医院中将集成传感器电路用于COVID-19监视。基于模糊的系统旨在使用COVID-19病人在医院内部的这种监视和管理功能，对重要的病人监视警报进行设计。