Redundant Compressor Sensing for Corrosion-Resistant Uptime

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Solution Overview

Problem

Air compressor control systems in harsh outdoor environments face reliability issues due to sensor failures caused by corrosion and heat stress, leading to compressor downtime and increased maintenance costs.

Innovation Solution

Implementing a compressor control system with redundant sensors physically separate and spaced apart, each with independent wiring harnesses and optionally enclosed in a weather-resistant enclosure, and fluidically connected to the component, allowing the system to continue operating even if one sensor fails, thereby reducing downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If sensors are placed in direct contact with compressor components to monitor operating parameters, then measurement accuracy is improved, but reliability deteriorates due to corrosion and heat stress from harsh outdoor environments

Engineering Contradiction:
Improvesensor measurement accuracyVSAvoidsensor reliability
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The system divides the sensing function into multiple separate sensors distributed at different locations on the compressor system. Each sensor monitors specific parameters independently, so that if one sensor fails due to environmental damage, other sensors continue to provide measurement data, maintaining overall system reliability while preserving measurement accuracy.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control system incorporates redundant sensors as a preventive measure against future failures. By having backup sensing capabilities in place before failures occur, the system can withstand sensor degradation from corrosion and heat stress without experiencing complete measurement loss or unplanned shutdowns.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If redundant sensors with independent wiring are implemented, then reliability is improved, but device complexity increases

Engineering Contradiction:
Improvecompressor control system reliabilityVSAvoidsensor and wiring system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system combines multiple sensor signals and wiring connections into a unified control architecture that processes all inputs through a single controller. This merging approach allows the system to benefit from redundant sensing while managing complexity through integrated signal processing and centralized control logic.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The control controller is designed to handle multiple sensor inputs and various operating conditions through a single multi-functional device. The controller can process data from any combination of sensors, adapt to different failure scenarios, and maintain compressor operation across a range of conditions, reducing the need for separate specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Productivity

If sensors are exposed to harsh outdoor environments for continuous monitoring, then operational capability is maintained, but durability deteriorates due to corrosion from road salt, dirt, and water

Engineering Contradiction:
Improvecompressor operational availabilityVSAvoidsensor service life
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The system places sensors at multiple different locations on the compressor, distributing them across various environmental zones. This segmentation ensures that not all sensors are exposed to the same corrosive conditions simultaneously, extending the overall system's operational capability while maintaining continuous monitoring coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Redundant sensors are installed as a preventive measure to cushion against the inevitable degradation from environmental exposure. When corrosion or other environmental factors reduce sensor durability, backup sensors ensure continuous operational capability without interruption to compressor productivity.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS11767837B2Compressor control systems and air compressor systems and vehicles equipped therewith
Publication Date: 2023.09.26 VANAIR MANUFACTURING INC
  • US11767837B2 patent drawing
  • US11767837B2 patent drawing

AI summary

Compressor control systems capable of increasing the reliability and uptime of air compressor systems that operate in harsh corrosive outdoor environments by redundantly sensing one or more operating parameters of the air compressor systems. Such a compressor control system includes a controller adapted to monitor at least a first operating parameter of a component of the air compressor system, at least first and second sensors that are physically separate and spaced apart from each other and that redundantly sense the first operating parameter of a component of the air compressor system, and separate and independent wiring harnesses electrically connecting the first and second sensors to the controller.