Abstract: A system and method for data collection and aggregation using a distributed network of communications enabled sensors connected to another primary network to achieve a secondary out-of-band monitoring perspective, for example, in power grids. The data collection system includes an aggregation and processing server configured to collect data from a variety of sensors adjacent to the monitored network each sensor includes secondary power such that it can continue data transmission even during power grid outages. The data collection system includes a method for secure real-time data ingest, machine learning enabled analysis, risk assessment, and anomaly detection on a broad geographic scale irrespective of isolated network boundaries.

Abstract: A personal computer has two memory banks respectively connected to two parity check units operative to detect parity errors. Upon doing so, each unit feeds a parity error signal to a separate latch. The latches are connected to a logic circuit which is in turn connected to an interrupt controller that initiates an interrupt when a parity error occurs. One latch is further connected to a check bit of a register of an I/O port and the check bit is set by the one latch. An interrupt handler reads the register and provides messages indicating which memory bank caused the parity error.