Optical Camera Communication (OCC) systems have a potential application in microalgae production plants. In this work, a proof-of-concept prototype consisting of an artificial lighting photobioreactor is proposed. This reactor optimises the culture’s photosynthetic efficiency while transmitting on-off keying signals to a rolling-shutter camera. Upon reception, both signal decoding and biomass concentration sensing are performed simultaneously using image processing techniques. Moreover, the communication channel’s theoretical modelling, the data rate system’s performance, and the plant distribution requirements and restrictions for a production-scale facility are detailed. A case study is conducted to classify three different node arrangements in a real facility, considering node visibility, channel capacity, and space exploitation. Finally, several experiments comprising radiance evaluation and Signal-to-Noise Ratio (SNR) computation are performed at different angles of view in both indoor and outdoor environments. It is observed that the Lambertian-like emission patterns are affected by increasing concentrations, reducing the effective emission angles. Furthermore, significant differences in the SNR, up to 20 dB, perceived along the illuminated surface (centre versus border), gradually reduce as light is affected by greater dispersion. The experimental analysis in terms of scattering and selective wavelength attenuation for green (Arthrospira platensis) and brown (Rhodosorus marinus) microalgae species determines that the selected strain must be considered in the development of this system.

中文翻译：

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实时相机通讯是微藻培养的一项重要技术

光学相机通信（OCC）系统在微藻生产工厂中具有潜在的应用。在这项工作中，提出了一种由人工照明的光生物反应器组成的概念验证原型。该反应堆可在将开关键控信号传输到卷帘相机的同时优化培养物的光合作用效率。在接收时，使用图像处理技术同时执行信号解码和生物质浓度感测。此外，还详细说明了通信通道的理论模型，数据速率系统的性能以及工厂分配要求和生产规模设施的限制。进行了案例研究，以考虑节点的可见性，通道容量和空间利用情况，对实际设施中的三种不同的节点布置进行分类。最后，在室内和室外环境中，都以不同的视角执行了几个包含辐射评估和信噪比（SNR）计算的实验。观察到朗伯样发射模式受浓度增加的影响，从而减小了有效发射角。此外，随着光受到更大色散的影响，沿照明表面（中心与边界）感知到的SNR的显着差异（最高20 dB）逐渐减小。关于绿光的散射和选择性波长衰减的实验分析。观察到朗伯样发射模式受浓度增加的影响，从而减小了有效发射角。此外，随着光受到更大色散的影响，沿照明表面（中心与边界）感知到的SNR的显着差异（最高20 dB）逐渐减小。关于绿光散射和选择性波长衰减的实验分析（观察到朗伯样发射模式受浓度增加的影响，从而减小了有效发射角。此外，随着光受到更大色散的影响，沿照明表面（中心与边界）感知到的SNR的显着差异（最高20 dB）逐渐减小。关于绿光散射和选择性波长衰减的实验分析（Arthrospira platensis）和棕色（Rhodosorus marinus）微藻物种决定了在开发该系统时必须考虑所选菌株。