Conveyor Brake Status Detection Using Resistance and Pick Voltage
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Solution Overview
Problem
Current elevator maintenance, particularly the inspection of brake wear, relies heavily on manual on-site processes, which are inefficient and prone to human error.
Innovation Solution
A system comprising a resistance detection component, a voltage acquisition component, a memory, and a processor that calculates the brake temperature and determines the brake state based on the detected resistance and pick voltage, generating signals for abnormal or normal states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual on-site inspection is used for brake wear, then workers can directly observe brake pad condition, but the process is inefficient and prone to human error
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated detection system that uses voltage acquisition and resistance detection components to automatically measure brake pad wear parameters, eliminating human error and improving both precision and efficiency
Solution Approach 2:
The brake wear detection system enables the elevator brake system to self-diagnose its condition through automated voltage and resistance measurements, providing real-time feedback without requiring manual intervention while maintaining high measurement accuracy
2Productivity
If automated detection system is implemented, then maintenance efficiency is improved and human error is reduced, but device complexity increases
Solution Approach 1:
The detection system integrates multiple functions into a single automated device that can perform both voltage acquisition and resistance detection, allowing one system to accomplish what previously required multiple manual inspection steps, thereby improving efficiency without proportionally increasing complexity
Solution Approach 2:
The patent introduces a processor as an intermediary that automatically processes the raw voltage and resistance data from the detection components, converting it into meaningful brake wear assessments and abnormal state signals, which simplifies the overall system architecture by centralizing the intelligence required for automated decision-making
3Temperature
If brake temperature is calculated based on resistance changes, then real-time temperature monitoring is achieved without direct temperature sensors, but measurement precision may be affected by other factors
Solution Approach 1:
The patent replaces direct temperature sensing with an indirect temperature measurement method that uses electrical resistance changes as a proxy for temperature, substituting a simpler resistance measurement system for complex temperature sensing while achieving real-time thermal monitoring through the known relationship between resistance and temperature
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 system automates the detection of elevator brake states, reducing manual intervention and improving maintenance efficiency by providing accurate and timely feedback on brake conditions.
Implementation Method 1
a resistance detection component for detecting a resistance of the brake
Implementation Method 2
a voltage acquisition component for acquiring a pick voltage of the brake
Implementation Method 3
calculate the temperature of the brake based on the initial resistance of the brake and the resistance of the brake detected by the resistance detection circuit
Data Source
AI summary
A system for detecting a state of a brake of a conveying device. The system includes a resistance detection component for detecting a resistance of the brake; a voltage acquisition component for acquiring a pick voltage of the brake; a memory for storing instructions; and a processor configured to execute the instructions. When executing the instructions, the processor calculates a temperature of the brake based on an initial resistance of the brake and the resistance of the brake detected by the resistance detection circuit; determines the state of the brake based on the temperature calculated and the picks voltage acquired by the voltage acquisition component, and generates a signal indicating the state.