Motor Load Monitoring Across Multiple Windings and Load Zones
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Solution Overview
Problem
Existing motor monitoring devices struggle to accurately track the state of motors with varying load conditions, particularly in configurations with multiple motors or winding paths, leading to inefficiencies and potential overheating.
Innovation Solution
A motor monitoring device that includes a rotation number acquisition unit, output value acquisition unit, winding identification unit, and a graph display unit capable of plotting markers in a graph area divided into load zones based on load characteristics, allowing for real-time tracking and visualization of motor states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a known load meter plots current values on a graph with rotation number and power output axes, then the operating state can be tracked, but it cannot accurately track the state of motors with varying load conditions or multiple winding paths
Solution Approach 1:
The patent divides the monitoring system into separate tracking units for each motor and winding path. Each unit independently monitors its specific motor's operating state, allowing the system to handle multiple motors and winding configurations simultaneously with high precision for each individual motor.
Solution Approach 2:
The system dynamically adapts to different motor configurations by selectively activating monitoring units based on which motor or winding path is currently in use. This allows the monitoring system to flexibly accommodate varying load conditions and different motor setups without compromising measurement accuracy.
2Ease of operation
If the graph area is divided into multiple load zones based on load characteristic information, then load levels can be distinguished, but the device complexity increases
Solution Approach 1:
The graph area is segmented into multiple load zones based on load characteristic information, with each zone representing different load levels. This segmentation allows operators to easily distinguish between various load conditions at a glance, improving ease of operation despite the added complexity of zone management.
Solution Approach 2:
The load zones are pre-defined based on load characteristic information before actual monitoring begins. This preliminary configuration establishes clear boundaries and characteristics for each load zone, making the subsequent monitoring and interpretation processes simpler and more intuitive.
Data Source
AI summary
A motor monitoring device according to one aspect of the present disclosure comprises: a rotational speed acquisition unit that acquires the rotational speed of one or more motors driven by a plurality of alternatively used windings; an output value acquisition unit that acquires the output value of the motor(s); a winding identification unit that identifies the winding in use; a load characteristic acquisition unit that acquires load characteristic information about the winding identified by the winding identification unit for the motor(s); and a graph display unit that plots a marker indicating a combination of the rotational speed and the output value in a graph area of which one axis is the rotational speed and the other axis is the output value. The graph display unit includes: a graph area setting unit that, with regard to expected combinations of the rotational speed and the output value, divides the graph area into a plurality of load zones with different load levels on the basis of a plurality of the load characteristic information, and displays the plurality of load zones in an identifiable manner; and a plotting unit that plots the marker in the graph area.