| 摘要 |
Device for control of lifting electromagnets for travelling cranes. This device comprises an optoelectronic table 1 formed by an assembly of phototransistors 4 and of visual display diodes 11, intended for the selection of magnets 2, 3... and controlled by an infrared pencil, means of coding 5, 12 and of decoding 6, 13 of the data obtained from the table 1, a circuit for logic processing and memory storage 7 of a decoded data, a set of power cards 8, 9... connected to the logic circuit 7 and to the corresponding electromagnets 2, 3..., to which they can transmit the orders originating from the circuit 7. This device exhibits very small bulk, can be implemented simply and rapidly and very reliably. <IMAGE>
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