Strain Gauge Mouse Computer Input Device
Original Publication Date: 1985-Feb-01
Included in the Prior Art Database: 2005-Feb-18
This article describes a mouse device which can be placed on a desk, work bench, etc., near a computer to which it is attached by an electrical cord. The user controls the cursor in the computer by pressing on the mouse instead of via keys. The mouse disclosed herein is a small box, as shown in the isometric drawing of Fig. 1. Fig. 2 is a side cutaway view, and Fig. 3 is a bottom view of the mouse. Casing 4 is composed of molded plastic material. Four leaf-type springs 2, two each for the X and Y coordinates, attach to casing 4 through spring mountings 3. Strain gauges 1 are attached at the outer extremities to each of the leaf springs 2. Signal conditioning is accomplished by signal-conditioning card 6. Fig. 4 is a circuit diagram showing how analog signal conditioning is accomplished.