Inertial Sensor Mounting via Intermediary Substrate

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Solution Overview

Problem

Existing methods for mounting inertial sensor units to structures like buildings often result in unnecessary impact or vibration, which can lead to sensor damage due to direct magnetic attraction or drilling vibrations.

Innovation Solution

A method involving a substrate with a magnet and an outer case with threaded engagement using male and female screws, where the case is mounted to the substrate with a screw coming-off preventing member, reducing the risk of vibration and impact by distributing the force across multiple fitting portions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the inertial sensor unit is mounted by means of a magnet, then the mounting is simple and removable, but an impact due to instantaneous attraction by the magnet is applied to the inertial sensor

Engineering Contradiction:

Improvemounting simplicityVSAvoidimpact to sensor

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

A substrate is introduced as an intermediary component between the magnet and the inertial sensor. The substrate absorbs the impact force from magnetic attraction, preventing direct transmission to the sensor while still enabling easy mounting and removal through the magnetic connection to the substrate.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The mounting system is segmented into separate functional components: the magnet for attachment, the substrate for impact absorption and sensor mounting, and the case for sensor protection. This segmentation allows each component to perform its specific function without compromising the sensor.

Inventive Principle:

Principle #1Segmentation

2Strength

If the inertial sensor unit is mounted using an electric drill, then secure mounting is achieved, but vibration of the electric drill is applied to the inertial sensor

Engineering Contradiction:

Improvemounting securityVSAvoidvibration to sensor

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The substrate serves as a mediator that decouples the drilling process from the sensor. The substrate is mounted to the structure first, and the case is then mounted to the substrate using screws. This intermediate mounting stage allows secure attachment without directly transmitting drilling vibrations to the sensor.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The substrate is mounted to the structure before the case is mounted to the substrate. This preliminary action establishes a stable base that isolates the sensor from subsequent mounting vibrations, as the case is already protected by the substrate-mounted configuration.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If multiple fitting portions are provided for mounting the case, then the inertial sensor is protected from impact and vibration, but the device complexity increases

Engineering Contradiction:

Improvesensor protectionVSAvoidmounting structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The mounting structure is segmented into standardized components (male screws, female screws, through-holes) that can be independently manufactured and assembled. This segmentation reduces overall complexity while providing multiple fitting portions for robust sensor protection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The substrate and case mounting portions are designed with universal features that can be used across different applications. The male and female screw connections, through-holes, and fitting portions serve multiple functions: structural attachment, vibration isolation, and alignment, reducing the need for separate specialized components.

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

This approach effectively reduces the risk of breakage from unnecessary impact or vibration, allowing for accurate vibration detection of structures while ensuring secure mounting and easy removal without damaging the structure.

Implementation Method 1

The substrate is provided with a magnet, and in the mounting of the substrate, the substrate may be mounted to the structure by means of the magnet

Methodology Applied

Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

the fit between the first mounting portion and the second mounting portion may be threaded engagement between the male screw that passed through the through-hole and the female screw

Methodology Applied

Scientific EffectThreaded engagement: Screw

Data Source

PatentUS11275097B2Method for mounting inertial sensor unit and inertial sensor unit

Publication Date: 2022.03.15 SEIKO EPSON CORP

AI summary

A method for mounting an inertial sensor unit includes: mounting a substrate to a structure; and mounting, to the substrate, a case in which an inertial sensor is accommodated, wherein the case is provided with a first mounting portion, the substrate is provided with a second mounting portion, and in the mounting of the case, the first mounting portion and the second mounting portion fit together, whereby the case is mounted to the substrate.