Haptic Feedback in Heated Tobacco Devices

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Solution Overview

Problem

There is a need for improved design of smoking substitute systems, particularly heated tobacco (HT) systems, to enhance user experience and functionality, as existing systems may not adequately address the health risks associated with traditional tobacco smoking while providing a similar experience.

Innovation Solution

A smoking substitute system that provides haptic feedback indicating different operating modes by controlling the temperature of a heater within the device, allowing users to select between operational modes with distinct temperature settings and corresponding haptic outputs, enhancing user interaction without relying on visual feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If visual feedback is used to indicate operating modes, then information transmission is clear, but the device requires additional components and may not be usable in all environments

Engineering Contradiction:
Improveinformation transmissionVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent replaces visual feedback mechanisms (lights, displays) with a haptic feedback mechanism using a vibration motor. This substitution eliminates the need for additional optical components while providing tactile information about operating modes through distinct vibration patterns, thereby reducing device complexity while maintaining effective information transmission.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If multiple operational modes with different temperature settings are provided, then user experience is enhanced, but the control system becomes more complex

Engineering Contradiction:
Improveoperational modesVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where the vibration motor provides tactile confirmation to the user about the currently selected operating mode. When a user selects a mode, the system provides immediate haptic feedback through specific vibration patterns, confirming the selection without requiring complex display interfaces or multiple buttons, thus managing control system complexity while maintaining versatility.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent uses parameter changes in the haptic feedback (vibration frequency, duration, intensity) to indicate different operating modes. By varying these physical parameters of the vibration motor output, the system can communicate multiple pieces of information about the operational state without adding complexity to the control system architecture.

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If haptic feedback is used to indicate operating modes, then user interaction is enhanced without visual dependency, but the mechanism requires additional components

Engineering Contradiction:
Improveuser interactionVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent integrates the vibration motor into the existing device structure, allowing it to serve multiple functions: providing haptic feedback for mode selection confirmation, indicating operational status, and potentially serving as a tactile interface element. This multi-functionality approach minimizes the addition of separate components while enhancing user interaction capabilities.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The system improves user experience by providing intuitive haptic feedback, allowing users to discern operational modes based on intensity and frequency of haptic activations, thus enhancing usability and potentially reducing health risks associated with traditional tobacco smoking.

Implementation Method 1

heat may be imparted to the tobacco material by a heating element of the device

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a heater temperature sensor may be provided in the device

Methodology Applied
Scientific EffectTemperature sensing: Thermocouple

Implementation Method 3

the vapour cools and condenses to form an aerosol for inhalation by the user

Methodology Applied
Scientific EffectCondensation: Condensation

Data Source

PatentEP3711552B1Smoking substitute system
Publication Date: 2023.06.21 IMPERIAL TOBACCO LTD
  • EP3711552B1 patent drawingFigure 1A
  • EP3711552B1 patent drawingFigure 1B
  • EP3711552B1 patent drawingFigure 2A~2B

AI summary

A method of operating a heated tobacco device is described. Haptic feedback is provided by the device when the target temperature of a heater of the device is achieved. The intensity of the haptic feedback is dependent on an operational mode of the device.