Device for combating hijack attempts has emergency control unit that blocks manual control; active control element status is altered using instructions from emergency control unit

摘要

The device has an emergency control unit that blocks manual control using control and monitoring data from an external control point and the state of the active control elements (90) is altered in a predetermined manner using control instructions from the emergency control and monitoring unit. The emergency control and monitoring unit provides instructions to an automatic controler (30), which blocks manual control (35).