ArticleIEEE sensors journal2021
Furniture-Integrated Respiration Sensors by Notched Transmission Lines.
Article in IEEE sensors journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed.
- A Near-Field Radio Frequency System for Continuous Left and Right Lung Volume Sensing.IEEE sensors journal · 2025Article
- Overview of Respiratory Sensor Solutions to Support Patient Diagnosis and Monitoring.Sensors (Basel, Switzerland) · 2025Review
- Ambient health sensing on passive surfaces using metamaterials.Science advances · 2024Article
- Novel Muscle Sensing by Radiomyography (RMG) and Its Application to Hand Gesture Recognition.IEEE sensors journal · 2023Article
- Attention Detection by Heartbeat and Respiratory Features from Radio-Frequency Sensor.Sensors (Basel, Switzerland) · 2022Article
- Objective Scoring of Physiologically Induced Dyspnea by Non-Invasive RF Sensors.IEEE transactions on bio-medical engineering · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Non-invasive respiration sensors integrated into furniture can be invisible to the user and greatly enhance comfort and convenience to facilitate many applications. Current sensors often require user cooperation or fitting, which discourages frequent usage. We present a new respiration sensor integrated into a bed or a chair by modifying a radio-frequency (RF) coaxial cable structure with a designed notch. The lung motion is coupled to the electromagnetic leakage at the notch through near-field coherent sensing (NCS). The sensors, covered with fabrics and positioned under the abdomen and thorax, can capture the respiratory waveforms and derive the breath rate. The heart rate can also be evaluated in the same setup with proper filtering. The sensor design can tolerate large position variation to accommodate user uncertainties. Various voluntary exercises of normal, deep, fast, held and blocked breathing were measured under different postures of supine, recumbent and sitting by the carrier frequency range between 900MHz and 2.4GHz. The breath rate from 10 participants compare well with the synchronous commercial chest-belt sensors in all breathing routines.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.