Wireless Vehicle Security Module for Fleet Access Control
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Solution Overview
Problem
Vehicle fleets face challenges in allowing authorized access without the need for on-site personnel or complex wired installations, as existing systems require complicated setup procedures and infrastructure.
Innovation Solution
An in-vehicle security module that receives authorization signals from an internet server, using a transceiver to communicate wirelessly with the vehicle's keyless entry system and interfere with the vehicle immobilizer if unauthorized, allowing for simplified installation and secure access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wired interface between control module and diagnostic bus or CAN bus is used, then vehicle access control can be implemented, but installation procedures become complicated
Solution Approach 1:
The patent replaces wired mechanical connections with wireless communication technology. The control module communicates with the vehicle's diagnostic bus and immobilizer system through wireless signals, eliminating the need for physical wired interfaces and complex installation procedures while maintaining reliable vehicle access control functionality
Solution Approach 2:
The patent introduces a wireless communication intermediary that mediates between the control module and the vehicle's existing diagnostic bus/CAN bus system. This intermediary enables communication without direct wired connections, simplifying installation while ensuring reliable access control through the vehicle's existing communication infrastructure
2Reliability
If on-site personnel or infrastructure are used for fleet vehicle access, then authorized access can be controlled, but expense increases
Solution Approach 1:
The patent implements a self-service system where the vehicle access control is automated through wireless communication between the control module, internet server, and vehicle systems. Authorized users can access vehicles independently without on-site personnel intervention, while the system automatically manages authorization verification and control, eliminating infrastructure costs associated with manual monitoring
Solution Approach 2:
The patent introduces an internet server as a remote intermediary that handles authorization verification centrally. This allows fleet managers to control access remotely without physical presence, reducing the need for on-site infrastructure and personnel while maintaining secure authorized access control through automated verification processes
3Reliability
If interference device prevents immobilizer from determining authorized key, then vehicle starting is prevented, but system complexity increases
Solution Approach 1:
The patent replaces complex mechanical interference mechanisms with electronic/software-based interference methods. The control module uses wireless communication to send interference signals that prevent the immobilizer from properly verifying the ignition key, achieving vehicle security through electronic means rather than complex mechanical devices
Solution Approach 2:
The patent combines multiple security functions (authorization verification, keyless entry control, and immobilizer interference) into a single integrated control module. This merging of functions reduces overall system complexity while maintaining reliable vehicle security through a unified wireless control 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
Enables secure, wireless authorization for vehicle access, reducing installation complexity and infrastructure costs while ensuring only authorized individuals can start the vehicle.
Implementation Method 1
a transceiver configured to receive an authorization signal from an internet server
Implementation Method 2
a keyless entry transmitter configured to wirelessly communicate with a keyless entry system of the vehicle
Implementation Method 3
an interference device configured to interfere with a determination by a vehicle immobilizer that an ignition key is an authorized key
Data Source
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AI summary
A communication system (10) and method (200, 300, 400) to allow authorized access to a vehicle (12). The system communicates with an internet server (14) and a mobile communication device (18) such as a smart phone (22) or RFID transponder (20) to determine if a person (16) attempting to access the vehicle (12) is authorized. The system includes an in-vehicle security module (24) configured to be installed on the vehicle (12) and to receive an authorization signal (26) from the internet server (14). The in-vehicle security module (24) includes a keyless entry transmitter (34) configured to communicate with a keyless entry system (38) of the vehicle (12) effective to allow access to the vehicle (12) if the authorization signal (26) is received. By using a keyless entry transmitter (34) to operate the vehicle's security system, the communication system (10) is easy to install as opposed to systems that require a wired interface with the vehicle (12). Such a system is useful for unattended operation of vehicle (12) rental fleets or employee vehicle (12) fleets.