Multiplexed Vibration Channel Integrator Switching

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Solution Overview

Problem

Existing online vibration monitoring systems, such as the CSI 6500, are limited in that they can only configure a channel to measure either velocity or acceleration at a time, preventing continuous velocity monitoring with periodic acceleration measurements, which increases costs when two separate channels are required.

Innovation Solution

An online vibration measurement system with multiplexed channels that briefly interrupts velocity monitoring to make periodic acceleration measurements, using a hardware integrator to switch between velocity and acceleration units, ensuring minimal disruption and maintaining valid velocity measurements during acceleration measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a channel is configured to measure velocity continuously using a hardware integrator, then velocity monitoring is maintained, but acceleration measurements cannot be made on the same channel

Engineering Contradiction:

Improvevelocity monitoring continuityVSAvoidmeasurement type flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system dynamically switches the measurement mode of the channel between velocity and acceleration based on operational requirements. The hardware integrator is selectively enabled or disabled through a switch mechanism, allowing the channel to adapt its function. This dynamic reconfiguration enables the same channel to perform different measurement types at different times, resolving the contradiction between maintaining continuous velocity monitoring and enabling acceleration measurements.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system implements periodic acceleration measurements by temporarily interrupting continuous velocity monitoring at scheduled intervals. During these periodic intervals, the hardware integrator is disabled to capture acceleration data, then re-enabled to resume velocity monitoring. This periodic switching allows both measurement types to be performed on the same channel without requiring permanent dedicated channels for each measurement type.

Inventive Principle:

Principle #19Periodic action

2Adaptability or versatility

If two separate channels are used to enable both continuous velocity monitoring and periodic acceleration measurements, then both measurement types are available, but system cost increases

Engineering Contradiction:

Improvemeasurement type flexibilityVSAvoidnumber of channels required

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent makes a single measurement channel universal by enabling it to perform both velocity and acceleration measurements. The hardware integrator, normally permanently enabled for velocity measurements, is made selectively controllable. This multi-functionality allows one channel to replace what would traditionally require two separate channels, reducing system complexity and cost while maintaining the capability to perform both measurement types.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges the functionality of separate velocity and acceleration measurement channels into a single channel. By combining the measurement capabilities and using a shared hardware integrator that can be selectively enabled or disabled, the system consolidates what would require two independent channels into one unified channel, thereby reducing device complexity and installation requirements.

Inventive Principle:

Principle #5Merging (Combining)

3Measurement precision

If the hardware integrator is disabled for acceleration measurements, then acceleration data can be captured, but velocity monitoring is interrupted

Engineering Contradiction:

Improveacceleration measurement accuracyVSAvoidvelocity monitoring interruption

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system uses partial action by disabling the hardware integrator only for the minimum necessary time duration to capture acceleration measurements, rather than disabling it continuously. This allows acceleration data to be captured with sufficient precision while minimizing the interruption to velocity monitoring. The switch operates briefly to enable acceleration measurement mode, then quickly returns to velocity monitoring mode.

Inventive Principle:

Principle #16Partial or excessive action

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

Enables continuous monitoring of vibration levels with reduced interruption time and valid data maintenance, allowing for simultaneous velocity and acceleration measurements without the need for additional channels, thus reducing costs and ensuring accurate data for external systems.

Implementation Method 1

An acceleration sensor is attached to a machine for sensing machine vibration and generating an analog acceleration signal based on the machine vibration

Methodology Applied

Scientific EffectVibration sensing: Vibration

Implementation Method 2

The integrator receives the analog acceleration signal and generates an analog velocity signal based thereon

Methodology Applied

Scientific EffectIntegration:

Data Source

PatentUS10222295B2System for measuring velocity and acceleration peak amplitude on a single measurement channel

Publication Date: 2019.03.05 COMPUTATIONAL SYSTEMS INC

AI summary

The system implements an algorithm that allows an integrator providing a vibration velocity measurement to be disabled automatically in order to do a PeakVue measurement. When the PeakVue measurement is required, the integrator is disabled and the last Overall velocity measurement is maintained. Once the PeakVue measurement is complete, the integrator is re-enabled and the Overall measurements resume.