A HARDWARE DESIGN FOR MAJORITY VOTING AND TESTING AND MAINTENANCE OF MAJORITY VOTING

摘要

The present invention relates to a majority vote. Number of input signals are each monitored by a single motor to each of the monitor, that is, for each signal. Each monitor generates a control signal that indicates the state of the monitored signal. A control signal wherein the occurrence is transmitted to a level control unit. The level control unit controls the input levels to the majority decision unit according to a control signal. Instead of the wrong signal, the level control unit selects signals of a predetermined logic level to be sent to the majority logic. These logic level, called the so-called replacement signals are selected so as not to disturb the correct signal with the replacement signal remains. Moreover, the monitoring of the majority decision output signal and generates a warning optionally. The majority vote function is tested by generating a warning by stopping the input signals in accordance with a first procedure. When the stop input signal according to a second procedure, but the alert is not generated.