Contactor Switching State Detection via Deflection Lever
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Solution Overview
Problem
Existing contactor technologies lack effective methods for accurately detecting and controlling their switching states, which is crucial for reliable operation.
Innovation Solution
A contactor module that includes a movable element transmitting movement to a deflection lever, which is detected by a sensor to determine the switching state, and can communicate with external modules for control and data exchange, featuring optical, electrical, and wireless interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a contactor switching state detection system is implemented, then the reliability of contactor operation is improved, but the device complexity increases due to additional sensors and mechanical components
Solution Approach 1:
A deflection lever is introduced as an intermediary mechanical element that translates the movement of the contactor's movable element into a detectable position change. The lever pivots about an axis and its free end moves in response to the movable element's displacement, providing a mechanical mediation between the contactor's internal switching mechanism and the external sensor, thereby improving detection reliability without requiring direct sensor contact with moving parts
Solution Approach 2:
The detection system creates a mechanical copy or representation of the contactor's switching state through the deflection lever's position. Instead of directly sensing the movable element's position, the system uses the lever to generate a corresponding position change at its free end, which can be detected by a sensor. This copying mechanism allows reliable state detection while maintaining separation between the high-voltage contactor components and the sensing system
2Measurement precision
If a deflection lever with pivot axis is used to detect switching state, then the measurement precision is improved, but the device complexity increases due to additional mechanical fixtures
Solution Approach 1:
The deflection lever transforms the linear displacement of the contactor's movable element into a rotational movement about a pivot axis. This dimensional transformation allows the system to detect switching state position with higher precision by converting small linear movements into larger angular displacements at the lever's free end, which are easier to measure accurately with standard sensors
Solution Approach 2:
The deflection lever serves multiple functions: it acts as a mechanical amplifier to enhance detection precision, serves as a structural connector between the movable element and the sensor, and provides a stable pivot point for consistent measurement. This multi-functionality reduces the need for separate components for each function, thereby limiting the increase in overall device complexity
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
Enhances the detection and control of contactor switching states, enabling improved reliability and flexibility in operation through visual and data-driven management.
Implementation Method 1
a deflection lever attached to the movable element and adapted to indicate the switching state
Data Source
Figure 1~2
AI summary
The invention relates to a contactor module (100) arranged to detect a switching state of a contactor (201). The contactor module (100) comprises a movable element (102) adapted to transmit the movement of the one switching element of the contactor (201) into the contactor module (100), and a deflection lever (104) attached to the movable element and adapted to indicate the switching state.