Keyless Access Module Integrating Remote and Keypad Inputs via CAN Bus
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Solution Overview
Problem
Current keyless access systems for vehicles are limited in functionality, scalability, and customization, particularly for complex vehicles like RVs, trucks, and emergency vehicles, which require more advanced control and monitoring capabilities without the need for extensive reworking of the wiring harness.
Innovation Solution
A keyless access system that integrates a remote communications device with a vehicle-mounted keypad, utilizing a Controller Area Network (CAN) to control and monitor vehicle functions, allowing for customizable and expandable modules that can be configured to suit various vehicle types and user preferences, enabling secure access and control without the need for redesigning the wiring harness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both a remote transmitter and a keypad entry system are used, then access functionality is improved, but system complexity increases due to incompatible components requiring additional external components
Solution Approach 1:
The patent combines the remote transmitter system and keypad entry system into a single integrated access control unit. The controller housing contains both the RF receiver circuitry and the keypad interface, eliminating the need for separate external components and reducing wiring complexity while maintaining both remote and local access capabilities
Solution Approach 2:
The integrated access control unit serves multiple functions: it receives RF signals from remote transmitters, processes keypad input codes, controls door lock actuators, and interfaces with the vehicle's CAN bus system. This multi-functional design replaces what previously required separate specialized components for each access method
2Adaptability or versatility
If the wiring harness is reworked to accommodate customized functions, then adaptability to specific vehicle applications is improved, but manufacturing cost and installation time increase
Solution Approach 1:
The access control system is divided into modular components: the main controller unit, separate actuator interfaces, and optional CAN bus integration. This segmentation allows the core unit to remain standardized while enabling flexible configuration through software settings and optional add-on modules, eliminating the need to rework the entire wiring harness for each application
Solution Approach 2:
The system provides dynamic configurability through software parameters that can be adjusted to match different vehicle types and access requirements. Rather than physically reconfiguring wiring harnesses, the system adapts to specific applications through programmable settings, making it suitable for RVs, trucks, emergency vehicles, and other specialized applications without additional manufacturing cost
Data Source
AI summary
A system for providing secured access to and/or control of a vehicle is provided. The system includes a vehicle network such as a CAN. A remote communications device is used for sending a signal for controlling functions associated with the vehicle. There is a receiver operatively connected to the vehicle network and adapted to receive the signal from the remote communications device. At least one access module is adapted to provide control of functions of the vehicle by a user from outside of the vehicle, the access module is electrically connected to the vehicle network. There is at least one user input device associated with the access module and there are a plurality of outputs associated with the access module wherein the access module is adapted to directly control access to the vehicle through control of the plurality of outputs.