These accelerometers typically give us two types of data: Static force applied on the sensor due to gravity→tilt/orientation detection, Force/acceleration exerted upon the sensor→movement/force detection, Maria De Marsico, Alessio Mecca, in Human Recognition in Unconstrained Environments, 2017. investigated the feasibility of a hybrid-surface EMG (sEMG) and ACC wearable sensor system for automatic classification of daily activities in patients with stroke [41]. With the use of this, the floor acceleration amplification factor can be identified. Cantion A/S was one of the first companies to offer commercially available piezoresistive cantilevers. In addition to motor activity monitoring, wearable systems can also be designed with real-time feedback to control human-machine interaction to assist daily activities for patients suffering from motor disorders.
Dominique Paret, Pierre Crégo, in Wearables, Smart Textiles and Smart Apparel, 2019. 2.7.2 Sensors. In a state with no acceleration, the distance between the fixed and movable electrode is the same.
The capacitance change is converted to voltage by an ASIC* and used to calculate acceleration. Zhang, Kazunori Hoshino, in Molecular Sensors and Nanodevices (Second Edition), 2019. Patel et al. first developed an integrated platform (SHIMMER) with a wearable system and algorithm to estimate the severity of three different Parkinson’s symptoms (i.e., tremor, bradykinesia, and dyskinesia) [35], as shown in Figure 4(a). ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B978012411588000008X, URL: https://www.sciencedirect.com/science/article/pii/B9780081007051000087, URL: https://www.sciencedirect.com/science/article/pii/B9780128148624000065, URL: https://www.sciencedirect.com/science/article/pii/B9780750675451500109, URL: https://www.sciencedirect.com/science/article/pii/B9780128031391000072, URL: https://www.sciencedirect.com/science/article/pii/B978012415893100007X, URL: https://www.sciencedirect.com/science/article/pii/B9781785482939500088, URL: https://www.sciencedirect.com/science/article/pii/B9780128159637000075, URL: https://www.sciencedirect.com/science/article/pii/B9780128032770000023, URL: https://www.sciencedirect.com/science/article/pii/B9780124186620000088, Sensor Technologies for Civil Infrastructures, 2014, Getting Started with the MSP430 Launchpad, Human Recognition in Unconstrained Environments, Mechanical transducers: Cantilevers, acoustic wave sensors, and thermal sensors, Molecular Sensors and Nanodevices (Second Edition), Advances and Challenges in Underground Sensing, Digital Signal Processing (Second Edition), In a data acquisition system for vibration analysis, a vibration signal is captured using an, Wearables, Smart Textiles and Smart Apparel, The Definitive Guide to Arm® Cortex®-M0 and Cortex-M0+ Processors (Second Edition), Wearing Sensors Inside and Outside of the Human Body for the Early Detection of Diseases, Carmen C.Y. and allows them to improve their game (Figure 5.22). Rigas adopted a set of wearable sensors to detect and assess tremor in a ubiquitous environment [37]. ROHM Group accelerometers are capacitive types developed using MEMS technology.The sensor element consists of a fixed electrode comprised of Si, a working electrode, and spring. The sensing devices of the traditional sensor node such as moisture sensor or temperature sensor could provide point sensing from the subsurface sensing. There are many types of sensors modern electronics systems. A comparison of the classification performance of the different configurations is shown in Figure 6.
Even in the case of the same accelerometer model from the same production line put in identical conditions, there can be relevant differences in the captured accelerometer signals. This is due to the wide spread of smartphones, which nowadays always have these sensors built-in. In a data acquisition system for vibration analysis, a vibration signal is captured using an accelerometer sensor in the noisy environment. For the cons, it is possible to mention all the problems related to gait biometrics described in Section 8 (e.g., possibly noisy signals, influence of shoes characteristics and ground slopes, influence of walking speed), which may be more evident with respect to machine vision techniques because the input sources are directly attached to the user. Figure 7.26 shows the retrieved vibration signal with noise reduction by a bandpass filter. While the data processing performance of the Cortex-M0 and Cortex-M0+ processors is not as high as the Cortex-M3 and Cortex-M4 processors, many sensors do not need high data processing bandwidth (due to low sampling rate) so that a small processor like the Cortex-M0 or Cortex-M0+ processor is sufficient. Recently, the same research team developed a Web-based system (MercuryLive) based on SHIMMER for the monitoring of patients with Parkinson’s disease in home settings [36].
As a rule of thumb, at least the top floor and the closest floor to the ground level shall be instrumented to record top and base accelerations, respectively (Kasai et al., 2012a,bKasai et al., 2012aKasai et al., 2012b). The captured signal is significantly corrupted by a broadband noise. Accelerometers are designed using different methods. Tremor was modeled as a sinusoidal signal of frequency ω0 plus M harmonics to calculate the estimation error εk as follows: The tremor frequency and amplitude can then be estimated by recursive method, i.e..
Dominique Paret, Pierre Crégo, in Wearables, Smart Textiles and Smart Apparel, 2019. 2.7.2 Sensors. In a state with no acceleration, the distance between the fixed and movable electrode is the same.
The capacitance change is converted to voltage by an ASIC* and used to calculate acceleration. Zhang, Kazunori Hoshino, in Molecular Sensors and Nanodevices (Second Edition), 2019. Patel et al. first developed an integrated platform (SHIMMER) with a wearable system and algorithm to estimate the severity of three different Parkinson’s symptoms (i.e., tremor, bradykinesia, and dyskinesia) [35], as shown in Figure 4(a). ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. URL: https://www.sciencedirect.com/science/article/pii/B978012411588000008X, URL: https://www.sciencedirect.com/science/article/pii/B9780081007051000087, URL: https://www.sciencedirect.com/science/article/pii/B9780128148624000065, URL: https://www.sciencedirect.com/science/article/pii/B9780750675451500109, URL: https://www.sciencedirect.com/science/article/pii/B9780128031391000072, URL: https://www.sciencedirect.com/science/article/pii/B978012415893100007X, URL: https://www.sciencedirect.com/science/article/pii/B9781785482939500088, URL: https://www.sciencedirect.com/science/article/pii/B9780128159637000075, URL: https://www.sciencedirect.com/science/article/pii/B9780128032770000023, URL: https://www.sciencedirect.com/science/article/pii/B9780124186620000088, Sensor Technologies for Civil Infrastructures, 2014, Getting Started with the MSP430 Launchpad, Human Recognition in Unconstrained Environments, Mechanical transducers: Cantilevers, acoustic wave sensors, and thermal sensors, Molecular Sensors and Nanodevices (Second Edition), Advances and Challenges in Underground Sensing, Digital Signal Processing (Second Edition), In a data acquisition system for vibration analysis, a vibration signal is captured using an, Wearables, Smart Textiles and Smart Apparel, The Definitive Guide to Arm® Cortex®-M0 and Cortex-M0+ Processors (Second Edition), Wearing Sensors Inside and Outside of the Human Body for the Early Detection of Diseases, Carmen C.Y. and allows them to improve their game (Figure 5.22). Rigas adopted a set of wearable sensors to detect and assess tremor in a ubiquitous environment [37]. ROHM Group accelerometers are capacitive types developed using MEMS technology.The sensor element consists of a fixed electrode comprised of Si, a working electrode, and spring. The sensing devices of the traditional sensor node such as moisture sensor or temperature sensor could provide point sensing from the subsurface sensing. There are many types of sensors modern electronics systems. A comparison of the classification performance of the different configurations is shown in Figure 6.
Even in the case of the same accelerometer model from the same production line put in identical conditions, there can be relevant differences in the captured accelerometer signals. This is due to the wide spread of smartphones, which nowadays always have these sensors built-in. In a data acquisition system for vibration analysis, a vibration signal is captured using an accelerometer sensor in the noisy environment. For the cons, it is possible to mention all the problems related to gait biometrics described in Section 8 (e.g., possibly noisy signals, influence of shoes characteristics and ground slopes, influence of walking speed), which may be more evident with respect to machine vision techniques because the input sources are directly attached to the user. Figure 7.26 shows the retrieved vibration signal with noise reduction by a bandpass filter. While the data processing performance of the Cortex-M0 and Cortex-M0+ processors is not as high as the Cortex-M3 and Cortex-M4 processors, many sensors do not need high data processing bandwidth (due to low sampling rate) so that a small processor like the Cortex-M0 or Cortex-M0+ processor is sufficient. Recently, the same research team developed a Web-based system (MercuryLive) based on SHIMMER for the monitoring of patients with Parkinson’s disease in home settings [36].
As a rule of thumb, at least the top floor and the closest floor to the ground level shall be instrumented to record top and base accelerations, respectively (Kasai et al., 2012a,bKasai et al., 2012aKasai et al., 2012b). The captured signal is significantly corrupted by a broadband noise. Accelerometers are designed using different methods. Tremor was modeled as a sinusoidal signal of frequency ω0 plus M harmonics to calculate the estimation error εk as follows: The tremor frequency and amplitude can then be estimated by recursive method, i.e..