Which algorithm is most reliable in dual-sensor redundancy comparisons?

The most dependable algorithm for the majority of industrial scenarios is the combination of phased dynamic threshold + 3σ adaptive update + EWMA baseline compensation. It achieves much greater dependability than other single algorithms by striking a compromise between the three fundamental goals of low false alarm rate, ease of implementation, and long-term stability.

What makes this combination the most dependable?

Phased dynamic thresholds are far more dependable than fixed thresholds because they automatically adjust to various process states like injection molding, cooling, and start-up/shutdown, preventing false alarms caused by sudden shocks or vibrations and resolving 80% of common false alarms.

In order to prevent a spike in false alarm rates caused by baseline offset after six months of usage, 3σ updated thresholds plus EWMA baseline compensation gradually follow the aging drift of sensors, automatically adjusting to sensor aging and guaranteeing good long-term stability. Fixed dynamic thresholds are lower than long-term operational reliability.

Easy to install and compatible with standard PLCs: It doesn't need a lot of processing power or training data like machine learning requires. It has a nearly 100% implementation success record since factory electrical engineers can directly configure and troubleshoot it, preventing instability caused by algorithm complexity.

Modifications to reliability priorities for various scenarios:

For straightforward retrofits in budget-constrained small to medium-sized factories: Selecting "phased dynamic thresholds + delayed confirmation" is adequate for the majority of needs and gives substantially improved reliability than fixed thresholds at incredibly low development costs.

For advanced medical and aeronautical applications requiring exceptionally high levels of reliability: Reliability is further increased by adding machine learning anomaly detection for secondary verification, although this comes at a higher cost.

EWMA baseline compensation is more important for continuous production in pure process industries because it provides superior long-term reliability than phased thresholds.

With more than ten years of industrial deployment and testing, this combo solution is currently used by all major global hot runner dual-sensor systems, keeping the false alarm rate consistently below three percent. It offers the best possible balance between dependability and cost-effectiveness.