LIDAR Based Walking Speed Estimation: A Portable Solution for Motion Capture

Imtiaz, Masudul H.; Haque, Rejwanul; Sazonov, Edward; Shen, Xiangrong

doi:10.1109/biorob49111.2020.9224305

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Indeed, especially in the case of elderly patients with movement difficulties, the availability of a system that is easy to put on and quick to use becomes perhaps the most important requirement to be satisfied (in addition, of course, to sufficient accuracy in the measurements). Less invasive systems based on LiDAR (light detection and ranging) that can certainly reduce the level of stress suffered by the test subjects have been recently proposed [43,44]. One such system appears to be particularly interesting as a candidate for replacing the manually assessed 4 m walkingspeed test, since it is based on a simple LiDAR sensor and the position of the test subject can be measured passively, that is with no sensor being worn by the patient [44].…”

Section: Introductionmentioning

confidence: 99%

“…Less invasive systems based on LiDAR (light detection and ranging) that can certainly reduce the level of stress suffered by the test subjects have been recently proposed [43,44]. One such system appears to be particularly interesting as a candidate for replacing the manually assessed 4 m walkingspeed test, since it is based on a simple LiDAR sensor and the position of the test subject can be measured passively, that is with no sensor being worn by the patient [44]. On the other hand, the system still requires a piece of dedicated hardware (a microcontroller unit driving the LiDAR sensor) that, while not complex in principle, cannot be regarded, at present, as an off-the-shelf component.…”

Section: Introductionmentioning

confidence: 99%

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Very Simple System for Walking-Speed Measurement in Geriatric Patients

2022

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Walking speed in geriatric patients is an important index for inferring the patient’s state of health and estimating the success rate of some surgical procedures. Although different solutions for monitoring the gait of a subject exist in scientific literature and on the market, there is a need for a system that is very simple, especially to wear, considering that elderly subjects often have movement difficulties. For this reason, we investigated the possibility of using a standard miniaturized wireless microphone, that can be easily attached to patients’ clothes by means of a clip, as the sole sensing device to be worn by the test subject. A transceiver, a sound card and a PC complete the system, which turns out to be quite simple to be set up and use, thanks to a proper graphic user interface that controls its entire operation. The system essentially tracks the position of the test subject over time by measuring the propagation times of repeated sound pulses from the speaker to the microphone. To avoid hearing discomfort, the frequency of the pulses is chosen at the higher end of the audio spectrum, so that they are essentially undetectable by adults. The measurement range is in excess of 6 m, that is sufficient for the standard 4 m walking-speed test. Tests performed in a laboratory environment have confirmed the effectiveness of the approach we propose.

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Section: Introductionmentioning

confidence: 99%