Name
Abstract | ||
|---|---|---|
Walker is a widely used mobility aid to improve users' stability and ambulatory ability. Its dynamometer instrumentation is necessary for quantitative study of basic biomechanics and functional requirements for effective use. How to extract the kinetic demands exactly and without any disturbance to normal gait remains a bottleneck for walker dynamometer design. Based on the force measurement of handle reaction vectors (HRVs) applied to the walker, this study developed a novel strain gauge-based wireless walker dynamometer system integrated with a static calibration algorithm based on ant colony system (ACS). Compared with the traditional measurement of HRV, the proposed method enhances security and flexibility of walker use by using one wireless data transmission system connecting 12 strain-gauge bridges mounted on the walker frame with the computer. To improve high-dimensional calibration performance, an ACS algorithm was employed to optimise the sensitivity weight matrix during calibration. To evaluate force measurement reliability, system performance with ACS algorithm was testified and its mean non-linearity, mean crosstalk and maximal force measurement accuracy error were found to be 6.88, 6.10 and 7.46%, respectively, which were much better than those of traditional linear calibration methods. This implemented walker dynamometer system may prove to be a reliable tool for measurement of hand loads and description of kinetic analysis of basic walker-assisted gait. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1049/iet-wss.2012.0136 | IET Wireless Sensor Systems |
Keywords | Field | DocType |
force measurement reliability,biomechanics,biomedical telemetry,user stability,sensitivity weight matrix,calibration,mobility aid,ant colony optimisation,wireless walker dynamometer design,force measurement,strain gauges,ambulatory ability,dynamometer instrumentation,wireless data transmission system,static calibration algorithm,ant colony system,system performance,strain gauge based wireless walker dynamometer system,normal gait,walker security,dynamometers,walker flexibility,high dimensional calibration performance,kinetic demands,maximal force measurement accuracy error,acs algorithm,handle reaction vectors,wireless sensor networks,traditional hrv measurement,mean crosstalk,walker assisted gait,handicapped aids,strain gauge bridges,mean nonlinearity | Mobility aid,Functional requirement,Wireless,Computer science,Simulation,Strain gauge,Accuracy and precision,Ant colony,Dynamometer,Calibration | Journal |
Volume | Issue | ISSN |
3 | 3 | 2043-6386 |
Citations | PageRank | References |
0 | 0.34 | 4 |
Authors | ||
7 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Rui Xu | 1 | 0 | 3.04 |
| Dong Ming | 2 | 105 | 51.47 |
| Shuang Qiu | 3 | 32 | 7.78 |
| Xin Wang | 4 | 638 | 67.81 |
| Hongzhi Qi | 5 | 49 | 20.61 |
| Lixin Zhang | 6 | 2 | 3.75 |
| Baikun Wan | 7 | 104 | 16.90 |