OBD II Telematics Unit for Multi-Program Fleet Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing telematics systems for fleet management face challenges such as high costs for cellular communication, complex installation requirements, and inability to manage varying data collection and vehicle system functionality across different vehicles or at different times.
Innovation Solution
The implementation of a telematics control unit (TCU) connected to the On Board Diagnostics II (OBD II) port in vehicles, enabling easy installation, two-way cellular communication, and programming flexibility to manage different vehicle modes and functionalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cellular communication capability is used for telematics data transmission, then two-way communication between vehicles and fleet management system is enabled, but cost and complexity increase
Solution Approach 1:
The patent uses RF transmitters and receivers as intermediary devices to relay telematics data between vehicles and the fleet management system. Instead of direct cellular communication in each vehicle, the system employs infrastructure-based RF communication that simplifies the vehicle's communication requirements while maintaining reliable two-way data transmission.
Solution Approach 2:
The patent extracts the complex cellular communication requirements from individual vehicles and consolidates them into infrastructure-based RF communication systems. By separating the communication function into vehicle-mounted sensors, RF transmitters, and central receivers, the system reduces the complexity burden on each vehicle while maintaining reliable communication.
2Reliability
If manual hardwiring of telematics unit to sensors and CAN bus is performed, then direct vehicle system integration is achieved, but installation time and labor cost increase
Solution Approach 1:
The telematics control unit automatically interfaces with vehicle sensors and systems through the standardized OBD II port without requiring manual hardwiring. The unit self-configures by reading vehicle identification information and automatically establishing communication protocols, eliminating the need for time-consuming manual integration while maintaining reliable vehicle system connectivity.
Solution Approach 2:
The patent utilizes the OBD II port as a universal interface that works across different vehicle makes and models. This standardized connection method provides multi-functional access to various vehicle systems (engine, transmission, sensors) without requiring vehicle-specific hardwiring, thereby reducing installation time while maintaining integration reliability.
3Ease of manufacture
If telematics system is designed for specific vehicle programs, then functionality is optimized for that program, but adaptability to other programs decreases
Solution Approach 1:
The telematics control unit employs dynamic programming that allows it to adapt its functionality based on the vehicle program requirements. The system can be remotely reprogrammed via RF communication to change its operational characteristics, enabling the same hardware to optimize for different programs (rental, corporate, personal use) without physical modifications.
Solution Approach 2:
The patent implements parameter-based configuration where the telematics system's operational parameters (data collection frequency, transmission intervals, monitored systems) can be changed through software programming. This allows the same physical system to be optimized for different vehicle programs by simply changing its operational parameters rather than its physical configuration.
4Device complexity
If a single vehicle is assigned to one fleet program, then system simplicity is maintained, but vehicle utilization efficiency decreases
Solution Approach 1:
The patent implements dynamic vehicle assignment where vehicles can be reassigned between different fleet programs based on utilization needs. The telematics control unit maintains communication history and operational data across program transitions, allowing the vehicle to seamlessly switch between programs (e.g., from corporate to rental) while maintaining system management simplicity through centralized tracking.
Data Source
AI summary
Programmable telematics systems, methods and apparatus for two-way transmission of data and information between fleet vehicles and a fleet management system. The systems and methods employ a programmable telematics communications unit (TCU) configured to connect to a communications port of a vehicle, enabling two-way transmission of data and information between a fleet management system and vehicles in the fleet. The TCU device includes cellular data connectivity enabling communication with the management system through existing cellular telephone networks. The programmable TCU may be toggled between multiple operating modes, wherein the TCU provides different functionality, such that a single vehicle may participate in multiple vehicle programs at different points in time, including separate vehicle rental and vehicle sharing programs.