HVAC Unit Auto-Addressing to Reduce Manual Configuration Time

Solution Overview

Problem

Manual configuration of unique addresses for HVAC units in networked HVAC systems is time-intensive and difficult, especially in large or inaccessible systems, leading to inefficiencies in communication and control.

Innovation Solution

A system where a primary unit communicates commands to secondary units to determine and assign unique addresses based on their serial numbers, allowing for automated address assignment and reducing the need for manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual configuration of unit addresses is used, then each unit can have a unique address for proper communication, but the process becomes time-intensive and difficult especially with many controllers in unknown or physically inaccessible locations

Engineering Contradiction:

Improveunique address assignmentVSAvoidaddress configuration time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system enables automatic address assignment where the primary controller autonomously discovers secondary controllers and assigns addresses without manual intervention. The primary controller sends discovery commands across the network, receives responses containing unit identifiers, and automatically maps these to unique addresses, eliminating the need for technicians to physically access each unit for configuration.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical/manual process of address configuration with an automated electronic discovery and assignment system. Instead of manually navigating to each physical unit to configure addresses, the system uses network communication protocols to automatically discover units and assign addresses through software-based identification and mapping processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If manual configuration of unit addresses is used, then each unit can have a unique address for proper communication, but the process becomes difficult and time-intensive especially with many controllers in unknown or physically inaccessible locations

Engineering Contradiction:

Improveunique address assignmentVSAvoidaddress configuration ease

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system enables automatic address assignment where the primary controller autonomously discovers secondary controllers and assigns addresses without manual intervention. The primary controller sends discovery commands across the network, receives responses containing unit identifiers, and automatically maps these to unique addresses, eliminating the need for technicians to physically access each unit for configuration.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical/manual process of address configuration with an automated electronic discovery and assignment system. Instead of manually navigating to each physical unit to configure addresses, the system uses network communication protocols to automatically discover units and assign addresses through software-based identification and mapping processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If automated address assignment is implemented, then configuration time is reduced and ease of operation improves, but system complexity increases due to need for discovery protocols and address management

Engineering Contradiction:

Improveaddress configuration speedVSAvoidcontroller communication system

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The primary controller is designed with multi-functionality, combining both the traditional control functions and the automated address assignment/discovery functions within a single device. This eliminates the need for separate address management systems or additional hardware, as the primary controller handles both unit discovery and address assignment using existing communication infrastructure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the existing communication network as an intermediary for the address assignment process. Rather than requiring direct physical access or separate configuration hardware, the patent leverages the network communication protocol already present in the HVAC system to transmit discovery commands and unit identifiers, simplifying the overall architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10563884B2Auto addressing for HVAC units

Publication Date: 2020.02.18 LENNOX IND INC

AI summary

According to certain embodiments, a system comprises a primary unit and a plurality of secondary units each having a unique unit number. The primary unit is configured to communicate a command to each secondary unit with instructions to reply during a time window. The primary unit is also configured to receive a reply communication indicating the secondary unit's unique unit number from at least one of the secondary units, and determine an address to assign to the replying secondary unit based at least in part on the received unique unit number.