Page 474 - Biomedical Engineering and Design Handbook Volume 2, Applications
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452 REHABILITATION ENGINEERING AND PROSTHETICS DESIGN
FIGURE 15.1 A direct-selection ECU. Each appliance has a numeric code, and the keypad is used
to select the appropriate module. Control functions such as “on,’’ “off,’’ and “dim’’ are also activated
by pressing the proper key on the keypad. This figure also illustrates the use of house wiring for distri-
bution of the control signals to the appliance modules. (From Cook AM and Hussey SM: Assistive
Technologies: Principles and Practice, (2d ed.), St. Louis, 2002, Mosby Yearbook Publishers, with
permission.)
