Snow Groomer Control for GNSS-Based Hazard Avoidance

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Solution Overview

Problem

Snow groomer vehicles pose risks due to poor visibility and operator inexperience, leading to accidents and unsafe operations on snowy slopes.

Innovation Solution

A snow groomer vehicle equipped with a control system that includes a user interface, position detector, and communication unit to remotely control parameters such as speed, lighting, and warnings, using GNSS for precise positioning and data exchange to enhance safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a snow groomer vehicle operates on snowy slopes with poor visibility, then the grooming function is performed, but the operator safety deteriorates due to inability to recognise obstacles and sources of danger

Engineering Contradiction:

Improveoperator safetyVSAvoidpoor visibility

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary system consisting of cameras, sensors, and processing units that act as a mediator between the operator and the snowy environment. These devices detect obstacles and hazards that are invisible to the human operator in poor visibility conditions, and present this information through the user interface, thereby resolving the contradiction between maintaining grooming operations and ensuring operator safety

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the snow groomer vehicle increases speed to improve productivity, then the grooming efficiency is improved, but the safety deteriorates due to increased risk of collisions and accidents

Engineering Contradiction:

Improvegrooming efficiencyVSAvoidsafety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements a feedback system where sensors continuously monitor the environment and vehicle parameters, and the control unit adjusts operational parameters in real-time based on this feedback. When obstacles or hazardous conditions are detected, the system automatically reduces speed or alerts the operator, allowing the vehicle to maintain high speeds during safe conditions for productivity while ensuring safety when hazards are present

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary detection of obstacles and hazards using sensors and cameras before the operator or vehicle reaches them. This advance warning allows the operator to take preventive actions such as reducing speed or changing course, thereby maintaining both high productivity through efficient routing and safety through early hazard identification

Inventive Principle:

Principle #10Preliminary action

3Area of stationary object

If the snow groomer vehicle operates in areas with excessive snow covering obstacles, then the grooming coverage is improved, but the safety deteriorates due to hidden dangers that cannot be recognised

Engineering Contradiction:

Improvegrooming coverageVSAvoidobstacle detection

Core Design Contradiction:

Area of stationary objectVSDifficulty of detecting and measuring

Solution Approach 1:

The patent replaces the human operator's visual detection system with electronic sensing systems including cameras, LIDAR, radar, and other sensors that can detect obstacles regardless of snow coverage. These electronic systems penetrate or detect through snow that obscures human vision, allowing the vehicle to maintain comprehensive grooming coverage while safely identifying hidden obstacles through technological substitution

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Ease of operation

If the snow groomer vehicle is operated by less expert operators, then the ease of operation is improved, but the safety deteriorates due to lack of knowledge about the environment and associated risks

Engineering Contradiction:

Improveoperator accessibilityVSAvoidsafety

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent implements a self-service system where the vehicle's electronic control unit automatically performs functions that would otherwise require expert operator knowledge. The system autonomously monitors environmental conditions, detects hazards, manages vehicle parameters, and provides guidance through the user interface, allowing less experienced operators to safely operate the vehicle while maintaining expert-level safety monitoring through the automated systems

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4263949B1Snowgroomer and method for controlling a snowgroomer

Publication Date: 2026.01.21 PRINOTH SPA

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AI summary

A snow groomer vehicle including: a frame (2); two tracks (6); a drive unit (5) connected to the two tracks (6) to move the snow groomer vehicle (1); at least one working device (7, 8, 9) selected from the group of working devices including: a winch (7), a tiller assembly (9), and a shovel (10), in particular the working device (7, 8, 9) being connected to the frame (2) by means of a connecting device (21); at least one control device (17) configured to control at least one parameter of the snow groomer vehicle (9), preferably relating to the tracks (6) or to the at least one working device (7, 8, 9); the control device (17) being configured to control in a first operating mode the at least one parameter based on the operator's control instructions received via the user interface, on the data received via the radio communication unit (18), and on the position detected via the position detector (13).