Redundant Voltage Detection for High-Voltage Safety

The patent applies local quality by assigning different detection locations to different control devices. Specifically, the first control device detects voltage at a first location in the high-voltage system, while the second control device detects voltage at a second location. This spatial distribution of detection points ensures that a fault in one location does not compromise the entire detection system, thereby improving reliability without requiring complete system redundancy.

The patent implements beforehand cushioning through the redundant detection architecture. By having multiple control devices detect voltage at different locations simultaneously, the system prepares in advance for potential faults. The safe isolation state is only confirmed when both devices agree, which cushions against the possibility of individual device failures or localized voltage anomalies that could lead to false safety assessments.

The patent applies universality by designing control devices that can perform multiple functions. The control devices not only detect voltage at their respective locations but also participate in the collective determination of safe isolation state. This multi-functionality reduces the need for separate dedicated detection systems, as each control device serves both local detection and global safety assessment purposes, thereby managing complexity while maintaining redundancy.

The patent merges the detection functions of multiple control devices into a unified safe isolation determination process. Instead of having separate independent detection systems, the patent combines the voltage detection results from multiple locations through a logical evaluation (both devices must indicate safe isolation). This merging approach consolidates the redundant detection capability into a single decision-making framework, reducing operational complexity despite the presence of multiple sensing points.