IR-UWB Radar Demonstrator for Ultra-Fine Movement Detection and Vital-Sign Monitoring

Schleicher, Bernd; Nasr, I.; Trasser, Andreas; Schumacher, Hermann

doi:10.1109/tmtt.2013.2252185

Cited by 141 publications

(46 citation statements)

References 15 publications

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“…The application of impulse-radio (IR) ultra-wideband radar to vital monitoring has been reported, for center frequency f 0 ¼ 6:0 GHz, bandwidth B ¼ 3:5 GHz, and fractional bandwidth B f ¼ 60% by Lai et al [20], for f 0 ¼ 7:0 GHz, B ¼ 4:9 GHz, and B f ¼ 70% by Schleicher et al [21], and for f 0 ¼ 1:5 GHz, B ¼ 3:0 GHz, and B f ¼ 200% by Bernardi et al [22]. However, these IR radar systems are only able to measure respiration and not the heart rate because of their low sensitivity to the target displacement.…”

Section: Introductionmentioning

confidence: 99%

Accurate heartbeat monitoring using ultra-wideband radar

Sakamoto

Imasaka

Taki

et al. 2015

IEICE Electron. Express

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Abstract:We demonstrate an accurate remote measurement of heartbeats using an ultra-wideband radar system. Although most conventional systems use either continuous waves or impulse-radio systems for remote vital monitoring, continuous waves suffer from non-stationary clutters, while impulse-radio systems cannot detect heartbeats. Our ultra-wideband radar system has a moderate fractional bandwidth intermediate of these systems, resulting in both the suppression of clutters and high sensitivity in measuring accurate heart rates even in a dynamic environment. A simultaneous measurement of the vital signal of a participant employing the ultra-wideband radar and electrocardiography reveals the high accuracy of the radar system in measuring the heart rate varying over time. Keywords: ultra-wideband, radar, vital monitoring, heart rate Classification: Microwave and millimeter wave devices, circuits, and systems References

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Section: Introductionmentioning

confidence: 99%

Accurate heartbeat monitoring using ultra-wideband radar

Sakamoto

Imasaka

Taki

et al. 2015

IEICE Electron. Express

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“…IR-UWB technology has many outstanding features such as high range resolution, good penetrability [2] low power consumption and so on. Due to these features, IR-UWB becomes a technology which receives a great deal of attention in many application fields, for example ranging and positioning system [3] [4], human detection [5] [6], vital sign monitoring [7] and so on.…”

Section: Introductionmentioning

confidence: 99%

Algorithm for Gesture Recognition Using an IR-UWB Radar Sensor

Ren¹,

Quan²,

Cho³

2016

JCC

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This paper introduces a human gesture recognition algorithm using an impulse radio ultra-wideband (IR-UWB) radar sensor. Human gesture recognition has been one of the hottest research topics for quite a long time. Many gesture recognition algorithms or systems using other sensors have been proposed such as using cameras, RFID tags and so on. Among which gesture recognition systems using cameras have been extensively studied in past years and widely used in practical. While it might show some deficiencies in some cases. For example, the users might not like to be filmed by cameras considering their privacies. Besides, it might not work well in very dark environments. While RFID tags could be inconvenient to many people and are likely to be lost. Our gesture recognition algorithm uses IR-UWB radar sensor which has pretty high resolution in ranging and adjustable gesture recognition range, meanwhile, does not have problems in privacy issues or darkness. In this paper, the gesture recognition algorithm is based on the moving direction and distance change of the human hand and the change of the frontal surface area of hand towards radar sensor. By combining these changes while doing gestures, the algorithm may recognize basically 6 kinds of hand gestures. The experimental results show that these gestures are of quite good performance. The performance analysis from experiments is also given.

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“…Additionally, it can have a profound impact on telemedicine and telehealth environments. Radar-based vital-sign monitoring can also be utilised to detect sudden infant death syndrome, to identify sleep anomalies overnight, to improve life quality of elders, to monitor infants when left unattended in a car and so forth [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…Approaches for these Doppler radars range from DC-coupled architectures to six-port-based schemes [18][19][20]. Regarding the latter, impulse-radio ultra-wideband radar systems transmit a large bandwidth in order to attain an excellent range resolution [14,[21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Mitigation of stationary clutter in vital‐sign‐monitoring linear‐frequency‐modulated continuous‐wave radars

Muñoz‐Ferreras¹,

Wang

et al. 2015

IET Radar, Sonar & Navigation

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Stationary clutter can seriously degrade the performance of radar sensors. In the specific context of vital-sign monitoring, this deterioration can lead to the impossibility of tracking the desired motions. Pure linear-frequency-modulated continuous-wave (LFMCW) radars have arisen as an interesting solution to monitor vital signs, featuring both an increased phase-based range precision and an advantageous range-isolation capability. In this study, the impact of clutter on healthcare LFMCW radars is mathematically analysed and a Doppler high-pass filtering technique is proposed for its suppression. Simulation results are provided to highlight the key aspects of the derived mathematical framework and associated Doppler processing. Real experiments are also conducted to prove the validity of the devised clutter-mitigation procedure.

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IR-UWB Radar Demonstrator for Ultra-Fine Movement Detection and Vital-Sign Monitoring

Cited by 141 publications

References 15 publications

Accurate heartbeat monitoring using ultra-wideband radar

Accurate heartbeat monitoring using ultra-wideband radar

Algorithm for Gesture Recognition Using an IR-UWB Radar Sensor

Mitigation of stationary clutter in vital‐sign‐monitoring linear‐frequency‐modulated continuous‐wave radars

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