Elevator Brake Current-Trajectory Detection for Braking-Time Assessment
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Solution Overview
Problem
Existing elevator brakes face issues such as wear, rust, and failure of components like guide sleeves and bolts, leading to safety risks and performance degradation, which are not accurately detected by current methods.
Innovation Solution
A method and device for detecting elevator brake performance by controlling the electromagnetic member's input voltage or current, recording current data trajectories, determining target points, and calculating braking time and smoothness to assess brake performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current detection methods are used for elevator brakes, then the detection process is simple, but the detection precision and ability to identify performance degradation is insufficient
Solution Approach 1:
The patent replaces mechanical inspection methods with electrical parameter measurement. By monitoring current data trajectories and electromagnetic force characteristics during brake operation, the system detects performance degradation without requiring physical disassembly or manual inspection of brake components.
Solution Approach 2:
The patent implements a feedback mechanism where current data is continuously collected during brake operation, processed to identify performance degradation, and used to generate maintenance recommendations. This closed-loop system enables proactive detection and prevention of brake failures.
2Reliability
If manual maintenance is performed regularly, then safety risks are reduced, but maintenance costs and time consumption increase
Solution Approach 1:
The patent enables preliminary detection of brake performance degradation before actual failures occur. By continuously monitoring current data trajectories and identifying trends that indicate wear or component failure, the system allows maintenance to be performed proactively rather than reactively, reducing unexpected failures and extending maintenance intervals.
Solution Approach 2:
The brake system performs self-diagnosis through automated monitoring of its own operational parameters. The system independently detects performance degradation, calculates braking time, and generates maintenance recommendations without requiring external inspection equipment or manual assessment.
3Productivity
If brake components operate continuously, then elevator productivity is maintained, but component wear and failure risk increase
Solution Approach 1:
The patent uses feedback from continuous monitoring of current data to assess brake health in real-time. By analyzing current data trajectories during normal operation, the system can detect early signs of component wear and recommend maintenance before failures occur, allowing continuous elevator operation while maintaining high reliability through proactive maintenance scheduling.
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
Accurately evaluates brake performance, reducing manual maintenance costs, preventing safety accidents, and enhancing elevator system reliability by identifying and addressing issues proactively.
Implementation Method 1
an electromagnetic member for providing an electromagnetic force
Data Source
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AI summary
An elevator brake performance detection method, an elevator brake performance detection device and an elevator brake (10) are disclosed. The elevator brake (10) includes an electromagnetic member (3) for providing an electromagnetic force (F2), and stops an elevator car (200) in a braking state by releasing the electromagnetic force (F2) and providing a braking force to an elevator power device (20). The elevator brake (10) performance detection method includes the following steps: A. controlling an input voltage or current of the electromagnetic member (3) so that the elevator brake (10) enters the braking state, and recording a corresponding current data trajectory of the electromagnetic member (3) based on time characteristic; B. determining a first target point and a second target point in the current data trajectory according to the current data trajectory, the first target point and the second target point being a first peak point in the current data trajectory, and a start point at which the current value changes from decreasing to increasing in the current data trajectory, respectively; and C. calculating a time difference between the first target point and the second target point as a braking time of the elevator brake (10). The present disclosure has obvious practicability and can effectively enhance the safety and reliability of the elevator.