Water Detection in Elevator Pits Using Wireless Sensors
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Solution Overview
Problem
Existing elevator systems lack an efficient method for detecting water accumulation in the pit of an elevator shaft, often relying on manual inspections by technicians.
Innovation Solution
A method and apparatus using a water sensor to detect water in the pit of an elevator shaft, which wirelessly transmits a notification to a controller and potentially adjusts the operation of the elevator system, such as stopping its operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual inspection by technicians is used to detect water in the pit, then no additional sensors or automated systems are required, but water detection is delayed and occurs only during unrelated maintenance visits
Solution Approach 1:
The elevator system performs self-monitoring for water accumulation in the pit through automated sensors, eliminating the need to wait for technician inspections. The system detects and reports water presence independently, ensuring timely awareness without external intervention.
Solution Approach 2:
Manual inspection by technicians is replaced with automated electronic water sensors that continuously monitor the pit environment. This substitution transitions from periodic human-based detection to continuous automated electronic detection, improving both reliability and response time.
2Reliability
If continuous monitoring with water sensors is implemented, then timely water detection is achieved, but system complexity and cost increase
Solution Approach 1:
Only the essential water detection function is extracted and implemented using simple sensors, rather than implementing a comprehensive monitoring system. This focused approach adds minimal complexity while achieving the specific goal of water detection.
Solution Approach 2:
The system monitors a specific parameter (water presence in the pit) using dedicated sensors, rather than implementing broad continuous monitoring of all system parameters. This targeted parameter monitoring reduces overall system complexity while maintaining high reliability for the specific function.
3Productivity
If water detection is delayed until manual inspection, then system operation continues without interruption, but damage may occur from extended water exposure
Solution Approach 1:
The water sensor detects water accumulation before it reaches damaging levels, allowing preliminary action to be taken. The system can alert operators and initiate protective measures while the elevator is still operational, preventing damage rather than responding after damage occurs.
Solution Approach 2:
The water sensor provides continuous feedback about pit conditions to the control system. This feedback loop enables real-time decision-making regarding elevator operation, allowing the system to respond appropriately to water presence while maintaining productivity when conditions are safe.
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
Enables timely detection and notification of water accumulation in elevator shafts, allowing for proactive measures such as stopping the elevator system to prevent damage, thereby enhancing safety and reducing maintenance costs.
Implementation Method 1
detecting completion of a circuit between a first electrode and a second electrode by water
Implementation Method 2
detecting when a buoy moves from a first buoy height to a second buoy height
Data Source
AI summary
A method of detecting water within a pit of an elevator shaft including: detecting water within a pit of an elevator shaft using a water sensor; wirelessly transmitting a notification to a controller; and transmitting the notification to a computing device.