Elevator Emergency Power Supply Capacity Prediction
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Solution Overview
Problem
Existing emergency power supplies in elevators struggle to accurately determine if they meet standardization requirements due to the lack of consideration for operational and environmental conditions, leading to uncertainty about the need for battery replacement.
Innovation Solution
A method and system that determine the remaining power supply capacity of the emergency power storage device in real-time, taking into account the actual power demand of electrical consumers and environmental conditions, predicting the time the system can provide power during a main power failure and comparing it to predetermined standards, with information provided to maintenance staff for decision-making.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery capacity is increased to extend emergency power duration, then duration of action is improved, but device complexity and cost increase
Solution Approach 1:
The system dynamically changes operational parameters by adjusting the power consumption of electrical consumers based on remaining battery capacity. When capacity drops below thresholds, the system reduces power consumption of non-essential consumers to extend emergency power duration without requiring larger batteries.
Solution Approach 2:
The patent implements dynamic adjustment of electrical consumer operation based on real-time battery status monitoring. The system transitions from static fixed-power operation to dynamic variable-power operation, optimizing emergency duration based on actual battery capacity and environmental conditions.
2Reliability
If battery capacity is increased to ensure compliance under all conditions, then reliability is improved, but loss of substance and cost increase
Solution Approach 1:
The system adjusts operational parameters dynamically based on environmental conditions (temperature, humidity) and battery age. By changing power consumption levels and operational modes according to actual conditions, the system ensures standard compliance without requiring oversized battery capacity for all possible scenarios.
Solution Approach 2:
The system performs preliminary monitoring and prediction of battery capacity degradation, allowing proactive adjustment of operational parameters before capacity becomes insufficient. This prevents compliance failures without requiring excessive battery capacity as a safety margin.
3Measurement precision
If detailed monitoring of battery status is implemented, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system implements feedback loops that continuously monitor battery capacity, environmental conditions, and power consumption. This feedback enables real-time prediction of remaining emergency duration and dynamic adjustment of operational parameters to maintain compliance.
Solution Approach 2:
The monitoring system uses the elevator's existing control unit and sensors to perform self-monitoring of battery status. By leveraging existing system resources rather than adding dedicated monitoring hardware, the patent achieves precise measurement without proportionally increasing complexity.
4Power
If electrical consumers operate at full power continuously, then power output is improved, but use of energy increases
Solution Approach 1:
The system dynamically adjusts the power output of electrical consumers based on real-time battery capacity assessment. Essential consumers maintain full power operation while non-essential consumers are reduced or shut off when battery capacity becomes limited, optimizing the balance between power output and energy consumption.
Solution Approach 2:
Different electrical consumers are treated differently based on their essentiality. Critical safety-related consumers receive priority power allocation while non-critical consumers have their power reduced first, creating a differentiated power distribution strategy that maintains essential functions with reduced energy consumption.
Data Source
AI summary
A method of operating an emergency power supply for an elevator cabin includes determining a remaining power supply capacity of an energy storage device of the emergency power supply, determining a power demand of an electrical consumer, and predicting how long the energy storage device is capable of providing the electrical consumer with power, based on the determined remaining power supply capacity and the determined power demand. An emergency power supply for an elevator cabin includes an energy storage device configured to provide emergency power to an electrical consumer in the elevator cabin, and a control unit. The control unit is configured to control operation of the energy storage device, determine a remaining power supply capacity of the energy storage device, determine a power demand of the electrical consumer, and predict an amount of time for which the energy storage device is able to power the electrical consumer.