Treadmill Proximity Sensor Safety Mechanism

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Solution Overview

Problem

Existing treadmill safety devices that rely on a magnet attachment point and string fail when runners accidentally knock the string with their hand, causing the magnet to be pulled, resulting in interrupted workouts and the need to restart the treadmill.

Innovation Solution

A proximity sensor-based safety device that detects the runner's distance from the treadmill, using technologies like infrared, ultrasonic, or laser sensors, and can disable the treadmill power if the runner is not within a safe distance, replacing the traditional magnet attachment point and string mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a magnet attachment point with string is used as safety device, then the treadmill can be shut down when runner falls, but the run is halted when runner accidentally knocks the string with hand

Engineering Contradiction:

Improvesafety functionVSAvoidworkout continuity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical string-based safety system with an optical sensor system. The optical sensor detects the runner's presence and position without physical contact, eliminating the problem of accidental string knocking while maintaining safety shutdown functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an optical sensor as an intermediary between the runner and the treadmill control system. The sensor acts as a mediator that detects runner presence and triggers safety shutdowns without requiring direct physical interaction between the runner and the safety mechanism.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If safety string is attached to runner, then treadmill shuts down when runner falls, but runner has to restart treadmill after accidental string contact

Engineering Contradiction:

Improvesafety shutdown functionVSAvoidworkout interruption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent replaces the mechanical string attachment system with an optical detection system that continuously monitors runner presence. This eliminates the need for physical string attachment and prevents workout interruptions caused by accidental string contact while maintaining safety shutdown capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The optical sensor system automatically detects runner presence and triggers safety shutdowns without requiring any action from the runner. The system serves itself by continuously monitoring and autonomously responding to safety conditions, eliminating the need for runner interaction with safety mechanisms.

Inventive Principle:

Principle #25Self-service

3Device complexity

If magnet attachment point is used, then safety device is simple, but safety string must be attached to runner which causes operational issues

Engineering Contradiction:

Improvesafety device structureVSAvoidrunner convenience

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The patent extracts the string attachment component from the safety system and replaces it with an optical sensor. This removes the problematic element (string) that caused operational issues while retaining the essential safety function through a different mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes the mechanical string-and-magnet attachment system with an optical sensing system. This replacement maintains the simplicity of the overall device while eliminating the operational inconveniences associated with physical string attachment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 continuous operation of the treadmill without the need for a safety string, ensuring user safety by automatically shutting down the treadmill if the runner steps away, maintaining workout continuity and compatibility with existing treadmill designs.

Implementation Method 1

A proximity sensor-based safety device that detects the runner's distance from the treadmill, using technologies like infrared, ultrasonic, or laser sensors

Methodology Applied

Scientific EffectInfrared radiation detection: Infrared Radiation

Implementation Method 2

A proximity sensor-based safety device that detects the runner's distance from the treadmill, using technologies like infrared, ultrasonic, or laser sensors

Methodology Applied

Scientific EffectUltrasonic detection: Ultrasound

Implementation Method 3

A proximity sensor-based safety device that detects the runner's distance from the treadmill, using technologies like infrared, ultrasonic, or laser sensors

Methodology Applied

Scientific EffectLaser detection: Laser

Data Source

PatentUS10286286B1Treadmill safety device

Publication Date: 2019.05.14 RYAN GERALD P

AI summary

A treadmill safety system that detects the runner or treadmill user without the need for attaching a string to the runner. It includes two basic components: 1) a distance or proximity sensor, laser, ultrasonic, IR, or other and 2) a method to kill treadmill power in the case the runner is not detected in position by the sensor. This can be by deactivation by electromagnet as in present treadmills, interruption of main power, or by any other method.