Coding Lug Sensor Identification System
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Solution Overview
Problem
Modern vehicles face challenges in accurately assigning data from multiple sensors to a control unit due to complex wiring and environmental exposure of electrical contacts, which can lead to corrosion and reduced system reliability.
Innovation Solution
A system using coding lugs that contactlessly detect presence and height in recesses on subunits, eliminating the need for additional electrical contacts and allowing sensors to be identified and configured via a shared data bus, with capacitive, inductive, or magnetic detection methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple sensors are connected to a control unit via data bus to reduce wiring complexity, then the wiring complexity is reduced, but the ability to unambiguously identify sensor installation positions deteriorates
Solution Approach 1:
The patent uses coding lugs as physical copies or representations of installation position information. Each connection position has a unique coding lug configuration that serves as a tangible identifier, allowing the control unit to determine sensor location through detection of these coding patterns without requiring complex wiring arrangements.
2Loss of information
If electrical contacts are used to transmit information to subunits, then information transmission is enabled, but resistance to environmental influences deteriorates due to corrosion
Solution Approach 1:
The patent replaces electrical contacts with a mechanical coding system using coding lugs and corresponding detection means. Instead of transmitting information through electrical signals over contacts susceptible to corrosion, the system uses the physical presence, absence, or position of coding lugs to encode information, which is then detected contactlessly by the subunit's detection means.
3Loss of information
If additional electrical contacts are added to transmit information to subunits, then information transmission capability is improved, but the number of contacts increases leading to more corrosion risk
Solution Approach 1:
The coding lugs serve multiple functions: they provide mechanical engagement between the connection position and subunit, and simultaneously encode installation position information. This eliminates the need for separate electrical contacts dedicated to information transmission, as the same coding structure serves both mechanical and informational purposes.
4Loss of information
If microswitches are used to provide subunit addresses, then identification is enabled, but mechanical parts are exposed to environmental influences
Solution Approach 1:
The patent replaces microswitches with coding lugs that are integrated into the mechanical connection structure. The coding lugs are positioned within recesses of the connection position, protected from direct environmental exposure, while still providing identification information through their presence, absence, or positional configuration relative to the subunit.
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 solution enhances system reliability and resistance to environmental influences by minimizing electrical contacts and mechanical parts, enabling unambiguous identification and configuration of sensors, thus improving data transmission and system robustness.
Implementation Method 1
capacitive, inductive, or magnetic detection methods
Implementation Method 2
capacitive, inductive, or magnetic detection methods
Implementation Method 3
capacitive, inductive, or magnetic detection methods
Data Source
AI summary
A system for transmitting a piece of information to a subunit, including at least one connection position and at least one subunit, the at least one connection position being configured for accommodating a subunit, and the at least one connection position including at least one coding lug which is configured for engaging into a corresponding recess on a subunit, the arrangement of the at least one coding lug coding the piece of information to be transmitted, and the at least one subunit having at least one recess which is configured for contactlessly detecting the presence of a coding lug in a recess.