Table 2.
Characteristics of the proposed intelligent wheelchair.
| Wheelchair parameters | A processing device (Raspberry Pi II model B) | ||
|---|---|---|---|
| Height | 89 cm | Price | $39.99 |
| Width | 61 cm | Chip | Broadcom BCM2836 |
| Frame weight with batteries | 58 kg | Processor | ARMv7 quad-core |
| Load capacity | 110 kg | Processor speed | 900 MHz |
| Linear velocity | 8 km/h | Voltage and power draw | 650 mA @ 5 V |
| Ø front wheels | 20 cm | GPU` | Dual Core VideoCore IV Multimedia Co-Processor |
| Ø rear wheels | 30 cm | Size | 85 × 56 mm |
| Stopping distance | 1 m | Memory | 1 GB SD RAM @ 400 MHz |
| Noise | 65 dBA | GPIO | 40 |
| Battery life | 20 km | USB 2.0 | 4 |
| Battery | 2 × 12 v 28 Ah | Ethernet | 10/100mb Ethernet RJ45 Jack |
| Engine power | 2 × 220 W 24 V | Audio | Multichannel HD audio over HDMI, analog stereo from 3.5 mm headphone jack |