Pinch Valve Hall Sensor Assembly for Failure Prediction
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Solution Overview
Problem
Pinch valve configurations lack effective means for predicting failure, leading to potential operational disruptions and maintenance challenges.
Innovation Solution
Integration of a Hall effect sensor assembly with a failure prediction module that processes displacement readings from the sensor assembly to compare against a threshold, generating signals indicating imminent or actual failure, thereby enabling predictive maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional pinch valve configurations are used without sensor assemblies, then the device complexity is low, but the reliability of failure prediction is poor
Solution Approach 1:
The patent replaces mechanical failure detection methods with a Hall effect sensor-based magnetic field detection system. The Hall effect sensor assembly detects the position of the valve plunger by sensing changes in the magnetic field generated by a magnet, eliminating the need for complex mechanical position sensors or switches while providing reliable failure prediction capability.
Solution Approach 2:
The patent introduces a magnet as an intermediary element that mediates between the valve plunger position and the Hall effect sensor. The magnet creates a magnetic field that the Hall effect sensor can detect, allowing indirect but reliable measurement of plunger position and tubing compression status without direct mechanical contact or complex linkages.
2Reliability
If Hall effect sensor assembly is integrated into the pinch valve, then the reliability of failure prediction is improved, but the device complexity increases
Solution Approach 1:
The Hall effect sensor assembly serves multiple functions: it detects valve plunger position, determines tubing compression status, and provides failure prediction. This multi-functionality reduces the need for separate sensors or detection systems, thereby limiting the increase in device complexity while improving reliability.
Solution Approach 2:
The patent utilizes changes in magnetic field parameters (strength and direction) as the valve plunger moves to detect position and compression status. By monitoring magnetic field parameter changes rather than using mechanical position encoders, the system achieves high reliability with minimal additional complexity.
3Reliability
If displacement readings are continuously monitored and compared with failure prediction thresholds, then the reliability of failure prediction is improved, but the use of energy increases
Solution Approach 1:
The failure prediction module performs displacement reading comparisons at periodic intervals rather than continuously. This periodic monitoring approach maintains reliable failure prediction capability while significantly reducing energy consumption compared to continuous real-time monitoring and processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for timely prediction of pinch valve failure, reducing downtime and maintenance costs by providing early warnings through visual or auditory indicators, enabling proactive maintenance.
Implementation Method 1
Hall effect sensor assembly comprising a stationary element anchored to the valve body and a motive element anchored to the valve plunger. The Hall effect sensor assembly produces an output signal based on the proximal relationship between the stationary element and the motive element.
Data Source
AI summary
A pinch valve configuration may include a pinch valve comprising a valve body, a valve plunger, and a fluidic tubing pinch passage defined between a tubing seat of the valve body and an operative end of the valve plunger. The pinch valve configuration may further include a Hall effect sensor assembly comprising a stationary element anchored to the valve body and a motive element anchored to the valve plunger. The pinch valve configuration additionally includes a failure prediction module in communication with the Hall effect sensor assembly. The failure prediction module is programmed to process an output signal of the Hall effect sensor assembly as a displacement reading, to compare the displacement reading with a failure prediction threshold, and to generate a failure prediction signal from the comparison of the displacement reading with the failure prediction threshold.