LEVEL POSITION DISPLAY CIRCUIT OF ELEVATOR USING DOT MATRIX

摘要

The circuit display the floor position where the elevator is by employing dot matrix. The circuit composes the clock generator part (1); the isolation circuitry (2) which converts the 24V having the floor position information into 5V; the 16 bit address counter (3) which generates address (A0-A12); the memory facility (4) which, includes the data (O0-O7) output and the floor position information; the decoding circuitry (5) having address input and selection output (S0-S6, S8-14); the first amplifier (6); the second a amplifier (7); the matrix driver which output the driving signal; and the second dot matrix facility (10).