Vehicle Security Unit Wireless Control via Data Bus
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Solution Overview
Problem
Conventional vehicle security systems are hardwired to vehicle components, leading to increased wiring complexity and incompatibility with data communications buses, making them difficult to adapt to different vehicle models and manufacturers, and lacking flexibility in remote control operations.
Innovation Solution
A vehicle system that includes a data communications bus, an On-Board Diagnostic (OBD) port, a vehicle tracking unit with long-range and short-range wireless devices, and a vehicle security unit, allowing for wireless communication and control of vehicle devices via the data communications bus, enabling remote operation and adaptation to various vehicle configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security systems are hardwired to vehicle components, then reliable control of vehicle devices is achieved, but wiring complexity and installation difficulty increase significantly
Solution Approach 1:
The patent replaces the mechanical/electrical hardwired connection system with a wireless communication system. The security controller communicates with vehicle devices through wireless transceivers and data buses instead of physical wire connections, eliminating the need for complex wiring harnesses while maintaining control reliability
Solution Approach 2:
The patent introduces a data bus as an intermediary communication medium between the security controller and vehicle devices. This data bus serves as a standardized interface that enables communication without direct wire connections to each device, reducing wiring complexity while ensuring reliable control
2Ease of operation
If security systems are hardwired with spliced wiring harnesses, then direct control of individual devices is achieved, but adaptability to different vehicle models decreases
Solution Approach 1:
The patent implements a universal data bus interface that can communicate with multiple different vehicle devices across various vehicle models. The system uses standardized communication protocols that enable the same security controller to adapt to different vehicle configurations without requiring model-specific hardwired connections
Solution Approach 2:
The patent enables dynamic configuration of communication connections through software rather than fixed physical wiring. The system can dynamically establish and modify communication links with different vehicle devices based on the specific vehicle model and required functions, enhancing adaptability while maintaining control capability
3Device complexity
If multiplexing schemes are implemented to reduce wiring, then wiring complexity is reduced, but communication reliability in harsh vehicle environments becomes difficult to ensure
Solution Approach 1:
The patent uses the vehicle's existing data bus as an intermediary that is already designed to operate in harsh vehicle environments. This data bus serves as a protected communication channel that maintains reliability while enabling reduced wiring complexity through multiplexing
Solution Approach 2:
The patent implements feedback mechanisms through the data bus communication system that monitor and maintain communication reliability. Error detection, correction, and retransmission protocols are used to ensure reliable data transmission over the reduced wiring infrastructure
Data Source
AI summary
A vehicle security unit is for a vehicle including at least one data communications bus, an On-Board Diagnostic (OBD) port coupled to the at least one data communications bus, and a vehicle tracking unit to be coupled to the OBD port. The vehicle security unit may include a security unit housing, a short-range security wireless device carried by the security unit housing, and a vehicle security controller carried by the security unit housing and configured to establish a wireless communication link via the short-range security wireless device with the vehicle tracking unit and communicate via the at least one data communications bus responsive to the communication link.