Irrigation Decoder Auto-Discovery on Multi-Wire Control Paths

Solution Overview

Problem

Manual entry of unique addresses for irrigation decoders in decoder-based irrigation systems is time-consuming and error-prone, often requiring manual scanning or digging up buried decoders for address verification.

Innovation Solution

An automated device discovery process using a modulated power signal with encoded discovery messages to identify unique addresses of irrigation devices connected to a multi-wire path, eliminating the need for manual recording and reducing human error.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual entry of unique addresses is used for irrigation decoders, then device complexity is reduced, but installation time and error rate increase significantly

Engineering Contradiction:

Improveinstallation speedVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The system enables self-service through automatic device discovery where the controller autonomously detects and records decoder addresses without requiring manual intervention. The controller sends discovery messages on the two-wire path and automatically captures responses from decoders, eliminating the need for installers to manually read and enter addresses from labels or barcodes.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces the mechanical/manual process of reading addresses from physical labels or barcodes with an electronic/digital automatic discovery system. The controller uses electronic communication over the existing two-wire path to automatically detect decoder addresses, substituting manual optical reading and data entry with automated electronic identification.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If optical reading of barcodes is used to obtain decoder addresses, then accuracy is improved, but installation time increases due to the need to bring readers to each decoder

Engineering Contradiction:

Improveaddress detection accuracyVSAvoidinstallation time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system enables self-service through automatic device discovery where the controller autonomously detects and records decoder addresses without requiring manual intervention. The controller sends discovery messages on the two-wire path and automatically captures responses from decoders, eliminating the need for installers to manually read and enter addresses from labels or barcodes.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The two-wire path serves as an intermediary communication channel between the controller and decoders. Instead of requiring physical access to each decoder for address reading, the discovery messages travel through the existing two-wire infrastructure, allowing automatic address detection without manual intervention or additional wiring.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If decoders are buried underground after installation, then system reliability is improved, but address verification becomes difficult requiring digging up decoders

Engineering Contradiction:

Improvesystem reliabilityVSAvoidaddress verification ease

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The system implements feedback by having decoders automatically respond to discovery messages with their addresses. The controller receives and processes these responses to build a lookup table of decoder addresses. This automatic feedback mechanism eliminates the need for physical verification of buried decoders, as the controller already has accurate address information from the automatic discovery process.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system enables self-service through automatic device discovery where the controller autonomously detects and records decoder addresses without requiring manual intervention. The controller sends discovery messages on the two-wire path and automatically captures responses from decoders, eliminating the need for installers to manually read and enter addresses from labels or barcodes.

Inventive Principle:

Principle #25Self-service

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

Facilitates fast and accurate detection of irrigation device addresses without manual intervention, enhancing efficiency and reducing errors in decoder-based irrigation systems.

Implementation Method 1

a modulator that modulates data, including a discovery message, on the output power signal

Methodology Applied

Scientific EffectModulation: Phase Modulation

Data Source

PatentUS12396413B2Auto-detection of devices on a multi-wire irrigation control system and auto-assignment of receivers to irrigation zones

Publication Date: 2025.08.26 RAIN BIRD CORP

AI summary

In some embodiments, apparatuses and methods are provided herein useful to use with irrigation devices connected to a multi-wire path in an irrigation system. In some embodiments, there is provided a system for use with irrigation devices including a modulator configured to provide an output power signal modulated with data; a multi-wire interface coupled to the modulator and configured to electrically couple to the multi-wire path extending into a landscape and to which the irrigation devices are connected; and a control circuit configured to execute an automated device discovery process configured to cause the modulator to modulate data comprising a discovery message on the output power signal, the discovery message indicating a portion of an address to match and prompting a response from one or more of the irrigation devices in which a corresponding portion of the unique address matches the portion of the address to match.