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The Oxford Optical Pointer: a direction-sensing device with proportional electrical output
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Publication details
| Journal | Medical and Biological Engineering and Computing |
|---|---|
| Date | Published - Jan 1988 |
| Issue number | 68 |
| Volume | 26 |
| Number of pages | 7 |
| Pages (from-to) | 68-74 |
| Original language | English |
Abstract
For some disabled people pointing provides a more convenient means of communication and control than the use of switches. The quadriplegic who retains good control of head movement can be provided with a number of input alternatives, but no existing system meets all the requirements of a general-purpose electronic pointing device. Consequently the Oxford Optical Pointer has been developed. The principle by which it converts relative direction into analogue electrical signals is described and its application as a head-mounted device for controlling an electric wheelchair is presented.
- direction sensor, head control, infra-red, joystick emulator, photo quadrant detector, proportional input device
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