Aftermarket Keyless Starter with Transponder Isolation Box
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Solution Overview
Problem
Aftermarket keyless starters face challenges in compatibility and ease of installation with modern OEM transponder-based security systems, requiring complex and expensive engine monitoring systems to prevent engine damage, and existing solutions do not simplify the integration process.
Innovation Solution
An aftermarket keyless starter system that includes a secure box to isolate the OEM transponder, an aftermarket microcontroller to control communication with the OEM reader, and a transmitter to send keyless start commands, allowing for remote or push-to-start functionality without the need for additional engine monitoring units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional aftermarket remote starters are installed in vehicles with transponder-based OEM security systems, then remote starting functionality is achieved, but complex and expensive engine monitoring systems are required to prevent engine damage
Solution Approach 1:
The invention extracts the transponder from its original location (ignition switch area) and places it in a separate secure box mounted in the vehicle. This physical separation allows the transponder to be continuously accessible to the OEM reader while isolating it from the ignition system, eliminating the need for complex engine monitoring to prevent key damage.
Solution Approach 2:
The secure box acts as an intermediary between the transponder and the external environment. It provides a controlled environment that protects the transponder while allowing RF communication with the OEM reader, simplifying the overall system by removing the need for complex monitoring circuits.
2Reliability
If transponders are positioned at precise locations adjacent to the ignition, then authentication is reliable, but the system becomes difficult to operate with keyless entry
Solution Approach 1:
The system segments the authentication function from the ignition function. The transponder in the secure box handles authentication independently, while the ignition system remains separate. This allows the transponder to be positioned optimally for RF communication without requiring precise placement near the ignition switch.
Solution Approach 2:
The secure box serves as an intermediary that maintains reliable authentication by keeping the transponder in a fixed, optimal position for RF communication with the OEM reader, while enabling keyless operation by removing the need for physical key insertion.
3Extent of automation
If internal vehicle system signalling progresses to databus communication, then system intelligence increases, but integration of aftermarket accessories becomes more difficult
Solution Approach 1:
The invention extracts the transponder authentication function from the complex ignition system and places it in a standalone secure box. This simplifies aftermarket integration by providing a self-contained unit that interfaces with existing OEM systems through standard RF communication, bypassing the need for complex databus integration.
Solution Approach 2:
The secure box design provides universal compatibility with various OEM transponder systems by using standard RF communication protocols. This multi-functional approach allows the same secure box design to work with different vehicle makes and models, simplifying aftermarket manufacturing and installation.
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 solution simplifies the installation and operation of aftermarket keyless starters, reducing costs and complexity by isolating the OEM transponder and enabling remote or push-to-start vehicle ignition while preventing engine damage through intelligent communication management.
Implementation Method 1
The box is affixed to the vehicle such that the OEM transponder is outside of the range R when affixed within the box
Implementation Method 2
The aftermarket reader is operatively connectable to the OEM transponder and operable to read the OEM identification code when the OEM transponder is affixed within the box
Data Source
AI summary
An aftermarket keyless starter for a vehicle including a smart ignition system and an OEM security system is provided. The OEM security system includes an OEM transponder for user verification and an OEM reader for reading the OEM transponder when the OEM transponder is within a range R of the OEM reader. The OEM transponder stores an OEM identification code. The aftermarket keyless starter includes a secure box which is outside of the range R for isolating the OEM transponder from the OEM security system, an aftermarket reader, an aftermarket microcontroller, and an aftermarket transmitter. The aftermarket microcontroller is operable to receive the keyless start command and respond thereto by having the aftermarket reader read the OEM identification code and retransmitting the OEM identification code to the OEM reader. The engine start command is transmitted to the smart ignition system subsequent to the sending of the keyless start command.