Electromagnetic Relay Control Circuit with Dynamic Holding Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional control circuits for electromagnetic relay units struggle to effectively manage environmental changes, leading to poor reliability due to high power consumption and sensitivity to environmental factors.
Innovation Solution
The implementation of a control circuit that provides driving power to two identical electromagnetic relay units, with first and second holding powers lower than the driving power, and generates a trip feedback signal when the second holding power is tripped, allowing the control circuit to increase the holding power, thereby maintaining the relay units in a switched-on status and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the control circuit provides holding power to maintain the electromagnetic relay unit in switched-on status, then power consumption is reduced, but the relay unit becomes sensitive to environmental changes and trips easily
Solution Approach 1:
The patent divides the relay control system into two identical electromagnetic relay units (50, 52) with separate holding power circuits. This segmentation allows one unit to be tested with lower holding power while the other maintains normal operation, enabling reliability improvement without sacrificing power efficiency.
Solution Approach 2:
The patent dynamically adjusts the holding power parameter based on environmental conditions. When the trip feedback signal indicates environmental sensitivity, the control circuit increases the holding power from the reduced level back to the normal level, adapting to changing conditions and preventing unnecessary tripping.
2Reliability
If the control circuit uses high driving power to switch on the electromagnetic relay unit, then the relay unit switches on reliably, but power consumption increases
Solution Approach 1:
The patent implements periodic monitoring of the relay units through trip feedback signals. The control circuit continuously checks the status of both relay units and adjusts holding power periodically based on whether tripping occurs, enabling reliable switching while minimizing continuous power consumption.
Solution Approach 2:
The patent makes the holding power dynamic rather than static. The control circuit adjusts the holding power level based on real-time feedback from the relay units, providing high power only when necessary for switching and reducing power when the relay remains stable.
3Device complexity
If the control circuit provides the same holding power to both electromagnetic relay units, then the system is simple to control, but it cannot adapt to differential environmental effects on adjacent units
Solution Approach 1:
The patent segments the control approach by providing separate holding power circuits for each relay unit (first holding power circuit for unit 50, second holding power circuit for unit 52). This allows independent adjustment of each unit's holding power based on its specific environmental conditions while using identical relay models.
Solution Approach 2:
The patent implements feedback control where the trip feedback signal from one relay unit informs the control circuit about environmental conditions. The control circuit uses this feedback to adjust the holding power of the other relay unit, creating an adaptive system that responds to environmental changes without requiring complex sensing hardware.
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
This solution reduces power consumption and enhances the reliability of the electromagnetic relay units by dynamically adjusting the holding power in response to environmental factors, preventing tripping and maintaining a stable switched-on status.
Implementation Method 1
a control circuit...configured to provide driving power to the two electromagnetic relay units to switch on the two electromagnetic relay units
Implementation Method 2
provide first holding power and second holding power to the two electromagnetic relay unit respectively after the two electromagnetic relay units are switched on, so as to maintain the two electromagnetic relay units in switched-on status
Data Source
AI summary
The present disclosure illustrates an electromagnetic relay device and a control method thereof. In the electromagnetic relay device, a control circuit respectively provides driving power to switch on the two electromagnetic relay units disposed adjacent to each other, and then provides the first holding power and the second holding power, lower than the driving power, to the two electromagnetic relay units after the two electromagnetic relay units are switched on, thereby maintaining the two electromagnetic relay units in the switched-on status. When the electromagnetic relay unit receiving the second holding power is tripped because of the environmental factor, the electromagnetic relay unit receiving the second holding power generates and outputs the trip feedback signal to the control circuit, so that the control circuit increases the first holding power upon receipt of the trip feedback signal. The second holding power is lower than or equal to the first holding power.