| 摘要 |
<p>A traffic control system incorporating a base unit (1) supporting a rotating circular disc (10) bearing a GO sign (11) on one side and a STOP sign (12) on the other. A hand held wireless controller (2) incorporates two control GO buttons (4) and a control button STOP (6) to cause an electric motor (13) in the base unit (1) to position the circular disc (10) to display, on demand, either GO sign (11) or STOP sign (12) to be displayed to oncoming traffic. The hand held wireless controller (2) when coupled with the base unit (1) provides a programming means using the operating GO buttons (4) and STOP button (6) to programme the system providing independent operation of any base unit (1) with any hand held wireless controller (2). The base unit also incorporates a Hall effect magnetic device to determine the current position of the rotating disc.</p> |
