Data Logger Housing Segmentation for Sealed Wireless Communication

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Solution Overview

Problem

Data loggers with metal housings face challenges in radio transmission due to high energy consumption and require openings for programming and data reading, which compromises sealing and increases production costs.

Innovation Solution

The data logger design features two electrically insulated metal wall areas with external access points for poles, eliminating the need for additional connections and allowing for a sealed housing, enabling wireless communication and reducing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a metal housing is used for high tightness and sealing, then sealing performance is improved, but radio transmission becomes problematic and energy consumption increases

Engineering Contradiction:

Improvesealing performanceVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The metal housing is segmented into two electrically insulated metal wall areas (first and second metal wall areas), allowing electrical contact points to be created without compromising the overall sealing structure. This segmentation enables wired communication while maintaining the protective metal housing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Specific local areas of the housing are designed with electrical contact functionality (first and second metal wall areas with accessible poles), while the rest of the housing maintains its sealed metal structure. This localized modification allows data transmission without requiring openings throughout the housing.

Inventive Principle:

Principle #3Local quality

2Reliability

If a metal housing is used for high tightness, then sealing performance is improved, but additional connection options (plugs or cable bushings) are required complicating the design

Engineering Contradiction:

Improvesealing performanceVSAvoidconnection structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The housing structure is merged with the electrical connection function. The metal wall areas themselves serve as both structural protective elements and electrical contact surfaces, eliminating the need for separate plugs or cable bushings. The poles are directly accessible from the outside through the housing structure.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The metal housing serves multiple functions: structural protection, sealing, and electrical conduction. The first and second metal wall areas act as both protective housing elements and electrical contact points, reducing the need for additional specialized components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of operation

If openings are made in the housing for programming and data reading, then data access is improved, but sealing performance deteriorates

Engineering Contradiction:

Improvedata accessVSAvoidsealing performance

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Physical openings in the housing are replaced with electrical contact through the metal wall areas. Data transmission is achieved through electrical poles that make contact with the metal housing surfaces, eliminating the need for mechanical openings while maintaining both sealing and data access functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP3273204B1Data logger and use of two metallic wall areas of a housing of a data logger

Publication Date: 2019.06.19 TESTO SE & CO KGAA

Figure 1~3
Figure 4
Figure 5

AI summary

In a data logger (1) it is proposed to form two electrically separated metallic wall areas (7, 8) on a housing (6), through which a data connection, which has at least a first pole (4) and a second pole (5), can be electrically contacted from the outside (see Fig. 3).