Quantification of handwriting performance: Development of a force acquisition pen for measuring hand-grip and pen tip forces

Hsu, Hsiao Man; Lin, Yu Chen; Lin, Wei Jr; Lin, Chih-Hao; Chao, Yen Li; Kuo, Li-Chieh

doi:10.1016/j.measurement.2012.08.008

Cited by 20 publications

(9 citation statements)

References 51 publications

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“…As shown above many approaches have been performed to provide static calibration of force platforms while dynamic calibration methods are not well established yet. Recently, the requirements for measuring dynamic forces have become more severe and varied in many industrial and research applications [88][89][90][91][92][93][94][95] so increasing the importance of the procedures for dynamic calibration of FPs [96]. Cappello et al [80] described a new technique based on a least-squares approach.…”

Section: B Dynamic Calibrationmentioning

confidence: 99%

A Review on Methods and Devices for Force Platforms Calibration in Medical Applications

Scorza¹,

Massaroni²,

Orsini³

et al. 2018

JESTR

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Nowadays force platforms are widely employed both for diagnostic purposes and for monitoring the execution of motor tasks such as stance, both static and perturbed, and gait. Moreover, even if a clinical assessment based on the knowledge of the forces the patients can exchange with the environment can be useful, some guidelines are needed to determine the practical limitations of the measurements for motion analysis and postural control. In particular, in situ calibration is a fundamental practice especially when the force platforms are either used as reference or are connected with other devices in the measurement chain. Several calibration procedures for force platforms have been proposed in the literature, some of them dealing with only one force component, others with all the force and moment components, and some research groups have also developed and tested some innovative devices or introduced some corrective equations, performing either static or dynamic calibration.

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Section: B Dynamic Calibrationmentioning

confidence: 99%

A Review on Methods and Devices for Force Platforms Calibration in Medical Applications

Scorza¹,

Massaroni²,

Orsini³

et al. 2018

JESTR

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show abstract

“…The handwriting kinetics were collected using the FAP, which is a custom-made ball-point pen containing four load sensors (one SLB-25, three TBS-5, Transducer Techniques, CA, USA) detecting the normal force between the pen-tip and writing surface, as well as the normal force between the digits (thumb, index and middle fingers) and pen barrel (Hsu et al, 2013). The FAP is made of aluminium and around 12 cm long, has a weight of about 30 g, and the diameter of the pen barrel is 1.1 cm, similar to that of a standard real pen, and it can be used to collect data on all the forces simultaneously ( Fig.…”

Section: Force Acquisition Pen Systemmentioning

confidence: 99%

Comprehension of handwriting development: Pen‐grip kinetics in handwriting tasks and its relation to fine motor skills among school‐age children

Lin

Chao

et al. 2017

Aus Occup Therapy J

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“…Our finding reflects horizontal force and impulse of horizontal force had significant grade effect for all tasks, while vertical force and impulse of vertical force did not. Although the source of the drawing characteristics is the pressure applied on the pen [12], there is no consensus on the development of pen pressure up to now [10]. More attention on the research of force variability should be directed to, since force control is an essential component of fine motor movement.…”

Section: Discussionmentioning

confidence: 99%

Computer-Assisted Assessment of Children Drawing Movements

2016

Proceedings of 2016 the 6th International Workshop on Computer Science and Engineering

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The study used a computer-assisted assessment of children's drawings to investigate the relationship between schooling and fine motor skill development. 62 children from grade 1-6 performed specific drawing tasks (horizontal line, vertical line, square and circle) on a digital tablet. Six features, namely drawing time, velocity, vertical force, horizontal force, impulse of vertical force, impulse of horizontal force were extracted from the dynamic data of drawing. Further analysis showed that there was grade effect for some of these features. The results suggest dynamic data analysis could be a valuable tool to reveal the performance characteristic of fine motor ability development.

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Quantification of handwriting performance: Development of a force acquisition pen for measuring hand-grip and pen tip forces

Cited by 20 publications

References 51 publications

A Review on Methods and Devices for Force Platforms Calibration in Medical Applications

A Review on Methods and Devices for Force Platforms Calibration in Medical Applications

Comprehension of handwriting development: Pen‐grip kinetics in handwriting tasks and its relation to fine motor skills among school‐age children

Computer-Assisted Assessment of Children Drawing Movements

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