Elevator Serial Communication Reduces Wire Count
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Solution Overview
Problem
Elevator installations require numerous discrete wires for communicating safety-related information, increasing material and labor costs.
Innovation Solution
A communication system using microcontrollers and serial peripheral interfaces to transmit safety data in a serial format, with error checking and redundancy to ensure data integrity and reliability, reducing the need for multiple wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If discrete wires are used to communicate safety-related information from capturing components to processing components, then data transmission reliability is improved, but the quantity of wires increases to 10-15 wires, increasing material cost and labor cost
Solution Approach 1:
Multiple discrete safety-related data transmission channels are merged into a single serial communication bus. The patent consolidates 10-15 separate wires into one serial communication line that carries multiple data streams simultaneously, reducing wire quantity while maintaining communication reliability through protocol-level error handling and data validation
Solution Approach 2:
The serial communication bus serves multiple functions simultaneously - transmitting various safety-related information (door status, overload conditions, emergency stop signals, etc.) through a single communication medium. This multi-functional approach eliminates the need for dedicated wires for each safety parameter, reducing overall wire quantity while maintaining comprehensive safety monitoring
2Reliability
If multiple discrete wires are used for safety information communication, then data integrity is improved, but installation labor cost increases
Solution Approach 1:
The patent combines multiple discrete wiring connections into a single serial communication bus, dramatically reducing the number of connection points and installation steps. This merging approach reduces installation labor cost while maintaining data integrity through software-based error detection and correction protocols that validate transmitted safety data
3Quantity of substance
If serial communication is used to transmit safety data, then the quantity of wires is reduced to one, but the complexity of error checking and data validation increases
Solution Approach 1:
The serial communication system incorporates feedback mechanisms including acknowledgment signals, error detection codes, and retransmission protocols. When data is transmitted along the single wire, the receiving end validates the data and sends feedback signals to confirm successful reception or request retransmission, maintaining data integrity without requiring multiple wires
Solution Approach 2:
The patent introduces intermediary error-checking protocols and validation layers that mediate between the single-wire transmission medium and the safety-critical data. These intermediary mechanisms detect and correct errors, ensuring data integrity while allowing the use of a simpler single-wire physical medium
Data Source
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AI summary
Safety related information for an elevator installation can be transmitted via a serial connection using serialization and deserialization modules. These serialization and deserialization modules can comprise redundant components, such as processors and interfaces, and can be configured to cross check various data inputs and outputs to identify data corruption, component failures, or inconsistencies in data.