Also this circuit breaker has the long-distance power failure and the feed feedback dual function,the control is effective,the feedback is accurate,has the promotion application value in the similar mine pit.

In order to increase the security of Chaos -based Encryption Algorithm while better anti -differential attack,proposed that encryption sequences carry on the confusion and the proliferation with Joseph Transform, and it can change the number of iteration used express feedback, enables the sequence to enhance anti-breaks after the Logistic mapping encryption.