Simultaneous Detection of Multiple Surface Acoustic Wave Sensor Tags for Water Quality Monitoring Utilizing Cellular Code-Reuse Approach

Abstract

A water quality monitoring application often requires the deployment of Internet of Things (IoT) sensors over a wide water body with communication links among them to transmit, receive the data, and then uplink it to the cloud for further analytics. Deployment of this kind requires battery-assisted IoT sensors which require monitoring the battery level and replacement when necessary. It is thus desirable to have battery-free sensortags and a suitable communication infrastructure to obtain data. In this paper, a system that facilitates obtaining sensed data, like pH, through passive sensor-tags based on Surface Acoustic Wave (SAW) technology and a cellular code-reuse scheme based reader infrastructure is proposed. The reader in each cell is able to read multiple sensor-tags simultaneously, which itself has been a challenge. The SAW sensor tags are appropriately proposed to be designed to be orthogonal to allow simultaneous detection and the cell range of reader-SAW sensor-tags communication is sought to be further enhanced through a resonant loading of Interdigital Transducer (IDT) based reflectors.

A review of surface acoustic wave sensors: mechanisms, stability and future prospects

“…Smart wireless sensor networks (WSNs) are the whole neural networks of intelligent applications (Zhang et al, 2022a(Zhang et al, , 2022bZhang et al, 2021aZhang et al, , 2021bWu et al, 2020;Wu et al, 2022). IoT connect all systems for communications and intelligent controls (Suresh et al, 2022;Chen et al, 2018). For example, a remote raw water monitoring and control system was developed as Internet of Water Things (IoWT) by researchers (Júnior et al, 2021).…”

Kajian Awal Pemanfaatan Sistem Cerdas untuk Pemantauan Kualitas Air dalam Konteks Pembangunan Pabrik AMDK

“…Kesimpulan pada bagian ini akan memberikan gambaran awal tentang arah dan implikasi pemanfaatan sistem cerdas dalam konteks pabrik AMDK yang dapat menjadi dasar untuk pengembangan penelitian lebih lanjut. [14], [15], [16], [17], [18], [19], [20], [21], [22], [23], [24], [25], [26], [27], [28], [29], [30], [31], [32], [33], [34], [35], [36], [37], [38]…”

“…Tabel parameter ini menjadi landasan untuk analisis dan pembahasan lebih lanjut terkait penerapan sistem cerdas dalam pengembangan metode monitoring kualitas air. [3], [4], [5], [6], [7], [9], [11], [14], [21], [23], [25], [26], [27], [30], [31], [32], [33], [34], [35], [36], [37], [38]. 2 Suhu [3], [4], [5], [6], [7], [8], [9], [11], [14], [17], [18], [19], [23], [28], [30], [31], [33], [34], [36], [37], [38].…”

Optimization Method of River Water Pollution Prevention and Early Warning System Supporting Spectrum Classification and 3D Remote Sensing Technology

“…Pollutant tracking simulation module function: mainly relying on the sampling data from the basin monitoring stations to find the source of pollution and the reverse tracking simulation of the downward propagation of pollutants, this module is the main function of the system and can be used to visualise the simulation process and results by displaying them on a remote sensing map [17].…”