Device for information transmission, in particular for the mining industry.

摘要

Information transfers over long distances in explosive hazardous situations is produced by mechanical and electromagnetic devices. The input signal is generated by a hydraulic cylinder (35) operating an electro-magnetic stage (1) to induce electrical signals in a long line (3). The receiver is a rotary electromagnetic device (6) that operates a valve (70) to move a hydraulic cylinder or similar unit (73). The system avoids the need for an auxiliary power supply.