Portable Object Barometric Trend Display Clutch Mechanism

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Solution Overview

Problem

Integrating a barometric device with an altimetric device in a portable object like a wristwatch is challenging due to space constraints, leading to inaccurate altitude indications from atmospheric pressure fluctuations caused by meteorological variations.

Innovation Solution

A portable object equipped with an atmospheric pressure sensor and a barometric trend display device connected via a clutch mechanism, allowing the user to switch between coupled and decoupled positions to provide stable altitude and meteorological trend indications, correcting altitude readings and predicting weather changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If an atmospheric pressure sensor is integrated into a portable object like a wristwatch, then the device can provide altitude indication, but meteorological variations cause distorted altitude readings

Engineering Contradiction:
Improvealtitude indication accuracyVSAvoidmeteorological variations affecting pressure sensor
Core Design Contradiction:
Measurement precisionVSObject-affected harmful factors

Solution Approach 1:

The invention segments the measurement functions by introducing a clutch mechanism that separates the barometric trend display function from the altitude indication function. The atmospheric pressure sensor can be coupled to either the altitude display device or the barometric trend display device, but not both simultaneously, allowing independent optimization of each measurement function and eliminating the harmful effect of meteorological variations on altitude readings.

Inventive Principle:
Principle #1Segmentation

2Measurement precision

If a barometric device is associated with an altimetric device to correct altitude indication, then altitude accuracy improves, but the device dimensions increase making it unsuitable for portable objects

Engineering Contradiction:
Improvealtitude indication accuracyVSAvoidportable object dimensions
Core Design Contradiction:
Measurement precisionVSVolume of moving object

Solution Approach 1:

The invention makes the atmospheric pressure sensor universal by enabling it to serve multiple functions through the clutch mechanism. The same sensor can be coupled to different display devices depending on the selected function (altitude indication or barometric trend display), eliminating the need for separate dedicated sensors for each function and thus avoiding increased device volume.

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

3Loss of information

If the atmospheric pressure sensor is continuously connected to the barometric trend display device, then meteorological trend indication is provided, but altitude indication becomes erratic when user changes location

Engineering Contradiction:
Improvemeteorological trend informationVSAvoidaltitude indication stability
Core Design Contradiction:
Loss of informationVSMeasurement precision

Solution Approach 1:

The invention introduces dynamic reconfigurability through the clutch mechanism, allowing the user to switch between different operational modes (altitude indication mode or barometric trend display mode). This dynamic switching enables the system to adapt to different usage scenarios, providing stable altitude readings when needed and meteorological trend information when the user remains stationary.

Inventive Principle:
Principle #15Dynamics

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 accurate and stable indication of altitude and meteorological trends, allowing users to predict weather changes and correct altitude readings by coupling and decoupling the barometric trend display with the atmospheric pressure sensor, ensuring meaningful measurements without location changes.

Implementation Method 1

an atmospheric pressure sensor whose geometric dimensions vary according to the fluctuations of the atmospheric pressure

Methodology Applied
Scientific EffectPressure sensor geometric deformation: Deformation

Data Source

PatentEP2818943B1Portable object provided with a device for measuring atmospheric pressure
Publication Date: 2018.04.25 MONTRES BREGUET SA
  • EP2818943B1 patent drawingFigure 1
  • EP2818943B1 patent drawingFigure 2
  • EP2818943B1 patent drawingFigure 3

AI summary

A portable object equipped with an atmospheric pressure measuring mechanism (1), the atmospheric pressure measuring mechanism (1) comprising an atmospheric pressure sensor (2) whose geometric dimensions vary according to atmospheric pressure fluctuations, the variations in geometric dimensions of the atmospheric pressure sensor (2) being applied to a barometric trend display device (32; 32') connected to the atmospheric pressure sensor (2) via a user-operated clutch mechanism (34; 34'), the clutch mechanism (34; 34') being able to be switched between a first position in which the kinematic link between the atmospheric pressure sensor (2) and the barometric trend display device (32; 32') is interrupted, and a second position in which the device (32;32') display of the barometric trend is kinematically coupled with the atmospheric pressure sensor (2).;