Earthquake monitoring system of dual-redundancy nuclear power station

The invention discloses an earthquake monitoring system of a dual-redundancy nuclear power station. The earthquake monitoring system of the dual-redundancy nuclear power station comprises a machine cabinet, a power supply, an alarm circuit, an acceleration sensor, an earthquake switch sensor, and a peak value recording device, wherein the power supply and the alarm circuit are arranged inside the machine cabinet, the acceleration sensor, the earthquake switch sensor, and the peak value recording device are arranged outside the machine cabinet. The earthquake monitoring system of the dual-redundancy nuclear power station is characterized in that the alarm circuit which is arranged inside the machine cabinet is a dual-redundancy alarm circuit which comprises an alarm unit, a control unit, and a recording device, wherein the alarm unit, the control unit, and the recording device are communicated in sequence through cables to achieve dual-redundancy communication, and the alarm unit and the recording device respectively pass through the machine cabinet through the cables and respectively connected with the corresponding earthquake switch sensor and the acceleration sensor. According to the earthquake monitoring system of the dual-redundancy nuclear power station, a dual-redundancy mechanical design is adopted to solve the problem in the prior art and existing equipment that security flaws possibly occur and response time is delayed due to incomplete utilization of resource information. A function of response spectrum analysis is strong, and reliability and safety of the earthquake prediction of the earthquake monitoring system of a nuclear power station are improved.