Wireless Vehicle Immobilization Interface Without Hard-Wired BAIID

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Solution Overview

Problem

Existing breath alcohol ignition interlock devices (BAIIDs) require complex and invasive installation processes that involve hard-wiring into a vehicle's electrical system, leading to high costs, long installation times, and permanent modifications.

Innovation Solution

A wireless vehicle immobilization system that uses a detection unit in the passenger compartment and a wireless relay system under the hood, communicating via radio frequency, to control vehicle functions without cutting wires, allowing for easy installation and reducing vehicle modifications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hard-wiring the BAIID system into the vehicle's electrical system is used, then reliable vehicle immobilization control is achieved, but installation complexity and time increase significantly

Engineering Contradiction:

Improvevehicle immobilization controlVSAvoidinstallation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical/electrical hard-wiring system with a wireless communication system. The BAIID device communicates with the vehicle's electrical system through wireless signals (e.g., radio frequency) rather than physical wire connections, eliminating the need to route wires through the firewall and connect to multiple electrical components while maintaining control reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a wireless communication module as an intermediary between the BAIID device and the vehicle's electrical system. This intermediary transmits control signals wirelessly to relays or control units in the vehicle, enabling immobilization control without direct electrical connections from the BAIID device

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If hard-wiring the BAIID system into the vehicle's electrical system is used, then reliable vehicle immobilization control is achieved, but installation cost increases

Engineering Contradiction:

Improvevehicle immobilization controlVSAvoidinstallation cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The wireless communication system eliminates labor-intensive installation steps such as cutting holes in the firewall, routing wires through the engine compartment, and making multiple electrical connections. This reduction in installation complexity directly lowers installation cost while maintaining control reliability through wireless signal transmission

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If hard-wiring the BAIID system into the vehicle's electrical system is used, then reliable vehicle immobilization control is achieved, but installation time increases

Engineering Contradiction:

Improvevehicle immobilization controlVSAvoidinstallation time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The wireless system eliminates time-consuming manual wiring tasks including stripping wires, making electrical connections, securing wires along routing paths, and testing multiple connection points. Installation is reduced to mounting the BAIID device and configuring wireless communication parameters, dramatically reducing installation time while maintaining reliable control

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If hard-wiring the BAIID system into the vehicle's electrical system is used, then reliable vehicle immobilization control is achieved, but permanent modifications to the vehicle are required

Engineering Contradiction:

Improvevehicle immobilization controlVSAvoidvehicle modifications

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The wireless communication system eliminates permanent modifications such as cutting holes in the firewall, drilling mounting holes for wire routing, and splicing electrical connections. The BAIID device can be mounted using removable adhesives or mechanical fasteners without altering the vehicle structure, while wireless signals pass through air space rather than requiring physical openings

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 reduces installation time and cost while minimizing changes to the vehicle, enabling easier installation by less experienced technicians and expanding the number of qualified service centers.

Implementation Method 1

communicating via radio frequency

Methodology Applied

Scientific EffectRadio frequency transmission: Electromagnetic Induction

Data Source

PatentUS20250313086A1Wireless vehicle interface for immobilization system

Publication Date: 2025.10.09 CONSUMER SAFETY TECHNOLOGY LLC

AI summary

Embodiments herein relate to a vehicle immobilization system is having a detection unit operable to detect a level of an intoxicant in a user, a control system to receive a signal from the detection unit indicating a level of intoxicant in the user, and a wireless transmitter configured to transmit signals. The system further includes a wireless relay system configured to be disposed in an engine compartment of the vehicle and having a wireless receiver configured to receive the signals from the wireless transmitter. Other embodiments are also included herein.