Key result
The implemented optical camera communication system achieved a data rate of 4.68 kbps with low bit-error-rate at 1 meter for real-time remote monitoring of heart rate and oxygen saturation.
An optical camera communication system using an RGB LED array and CCTV camera can successfully transmit real-time HR and SpO2 data with low bit-error rates at short distances.
May enable contactless HR/SpO2 monitoring via CCTV; leaves open clinical validation before routine adoption.
In this technical paper, we design and implement an optical camera communication system for real-time remote monitoring of patient's heart rate (HR) and oxygen saturation (SpO2) data. The data is collected and transmitted by a patch circuit which comprises a MAX30102 sensor and an RGB LED array. A close circuit television camera is used not only for surveillance but also for receiving the data simultaneously. The LED is modulated using color intensities, and the data can be retrieved regardless of any orientations of the LED array. We propose a neural network (NN) to detect each LED separately, and we implement another NN-based on feature extraction to precisely recognize the colors. The data are also encoded with a unique key, which increases the security of the communication mechanism. System performance of 4.68 kbps with low bit-error-rate (BER) and 1.172 kbps with moderate BER is achieved at 1 and 3 m, respectively.
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Ahmed et al. (2020) studied this question. Optical camera communication (OCC) system was evaluated on System performance (data rate and bit-error-rate). The implemented optical camera communication system achieved a data rate of 4.68 kbps with low bit-error-rate at 1 meter for real-time remote monitoring of heart rate and oxygen saturation.
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