Optical wireless connected objects for healthcare

Abstract

In this Letter the authors explore the communication capabilities of optical wireless technology for a wearable device dedicated to healthcare application. In an indoor environment sensible to electromagnetic perturbations such as a hospital, the use of optical wireless links can permit reducing the amount of radio frequencies in the patient environment. Moreover, this technology presents the advantage to be secure, low-cost and easy to deploy. On the basis of commercially available components, a custom-made wearable device is presented, which allows optical wireless transmission of accelerometer data in the context of physical activity supervision of post-stroke patients in hospital. Considering patient mobility, the experimental performance is established in terms of packet loss as a function of the number of receivers fixed to the ceiling. The results permit to conclude that optical wireless links can be used to perform such mobile remote monitoring applications. Moreover, based on the measurements obtained with one receiver, it is possible to theoretically determine the performance according to the number of receivers to be deployed.

Optical Wireless Network Design for Off-Body-Sensor Based Monitoring

“…e authors in [15] experimentally confirmed the potentialities of IR system based on the diffuse configuration for mobile patient monitoring. Besides, a custom-made wearable device is presented in [16], which allows OWC-based transmission of accelerometer data in the context of physical activity supervision of poststroke patients in hospital. On the other hand, Alyan and Aljunid [17] and Chevalier et al [18] have proposed multiple access schemes based on CDMA spreading codes.…”

Healthcare Application-Oriented Non-Lambertian Optical Wireless Communications for B5G&6G

“…To the best of our knowledge, in the indoor medical related system shown in the radiation intensity of the transmitter is modeled by the generalized Lambertian pattern as [1,2]:…”

“…In typical indoor healthcare scenario, the OW channel gain form the optical transmitter on the patient to the optical receiver on the ceiling center could be expressed as [1,2]:…”

“…Jupeng Ding 1 *, I. Chih-Lin 2 and Jiong Zheng 1 1 Key Laboratory of Signal Detection and Processing in Xinjiang Uygur…”

“…Nevertheless, most of the current health application is based on conventional radio frequency (RF) techniques, such as WiFi (Wireless Fidelity) or UWB (Ultra-Wide Band), and the annoying interference issue frequently degrades the user experience. On the other side, the emerging solid source based optical wireless (OW) technology is consistently investigated to complement the wireless capacity for various healthcare application in EM (electromagnetic) sensitive scenarios [1][2][3][4][5]. Specifically, the validity is examined to achieve the diffuse OW communication between the on-body nodes [6][7][8][9][10].…”