Table 1 IW controls in literatures
From: Vision based interface system for hands free control of an intelligent wheelchair
| Â | Â | Intelligent Wheelchair | Feature | Device | Supporting Commands |
|---|---|---|---|---|---|
Intrusive interfaces | Y.L. Chen, et, al [10] | Head orientation | tilt sensors, microprocessor | Go, back, left, right | |
| Â | Â | SIAMO project [11] | Eye gaze | Electrode | Go, Back, Left, Right |
| Â | Â | Wheelesley [12] | Eye gaze | Infrared sensors, ultrasonic range sensors, electrodes (EOG) | Go, Stop, Back, Left, Right |
Non-intrusive interfaces | voice | Siamo project [11] | Voice | ultrasonic sensors, infrared sensors, camera & laser diode | Go, Back, Left, Right |
| Â | Â | ROB Chair [13] | Voice | infrared sensors, ultrasonic sensors, head microphone | Go, Stop, Speed up, Speed Down, Rotate |
| Â | Â | NAVChair [14] | Voice | Dos-based computer, ultrasonic transducer, lap tray, sonar sensors | Go, Stop, Back, Left, Right |
| Â | Â | TAO project [15] | Voice | sensors, 2 processor boxes | Go, Stop, Back, Left, Right, Speed Down |
| Â | vision | Yoshida, et, al [22] | Face | ultrasonic sensors, 2 video camera | Go, Stop, Left, Right |
| Â | Â | HGI [16] | Head & nose | webcam, ultrasonic sensors, data acquisition board | Go, Left, Right, Speed up, Speed Down |
| Â | Â | SIAMO [11] | Head | CCD color-micro camera | Go, Left, Right, Speed up, Speed Down |
| Â | Â | Proposed IW | Face & Mouth | web camera, data acquisition board | Single commands: Go, Stop, Left, Right, Rotate Mixing commands: Go-left, Go-Right |