Wireless Vehicle Step Control Bypassing CAN Bus Integration
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Solution Overview
Problem
Existing vehicle step apparatus integration with the vehicle's control system is hindered by communication system protection measures, requiring modifications to the vehicle's CAN bus, increasing complexity and cost, and reducing reliability.
Innovation Solution
A vehicle step apparatus with an extending and retracting device, motor, detector, emitter, receiver, and controller that uses wireless communication to control the device independently without integrating with the vehicle's control system, allowing for easy mounting and operation without modifying the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control circuit of the vehicle step apparatus is integrated into the vehicle's CAN bus, then the control system can access the step apparatus, but the complexity and cost increase due to required bus modifications
Solution Approach 1:
The patent introduces a wireless communication intermediary (emitter and receiver) between the vehicle's control system and the step apparatus control circuit. The emitter in the control system wirelessly transmits control signals to the receiver in the step apparatus, eliminating the need for direct CAN bus integration and avoiding bus modifications while maintaining reliable control.
Solution Approach 2:
The patent replaces the mechanical/electrical connection system (CAN bus wiring) with a wireless communication system. By substituting physical bus connections with wireless signal transmission, the system achieves control without requiring physical modifications to the vehicle's existing bus architecture.
2Ease of operation
If the control circuit is integrated into the CAN bus, then the step apparatus can be controlled, but the cost increases due to modification requirements
Solution Approach 1:
The wireless communication components act as intermediaries that enable control functionality without requiring expensive modifications to the vehicle's existing infrastructure. The emitter and receiver provide a cost-effective bridge between the control system and step apparatus.
Solution Approach 2:
The patent extracts the control signal transmission function from the vehicle's existing CAN bus system and implements it separately through wireless communication. This extraction allows the step apparatus to be controlled independently without involving the vehicle's complex bus system, reducing installation costs.
3Reliability
If foreign signals are prohibited in the communication system, then security is maintained, but the step apparatus cannot access the control bus
Solution Approach 1:
The wireless communication system serves as an intermediary that bypasses the vehicle's protected communication bus. The emitter transmits signals wirelessly and the receiver receives them outside the protected bus environment, allowing the step apparatus to communicate with the control system without violating security restrictions on foreign signal access.
Solution Approach 2:
The patent replaces the electrical signal transmission through the protected CAN bus with wireless signal transmission. This substitution allows control signals to reach the step apparatus without entering the vehicle's protected communication system, maintaining security while enabling functionality.
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 independent control of the vehicle step apparatus without burdening the vehicle's control system, simplifying installation and ensuring high reliability, especially for vehicles with communication systems that prohibit foreign signal access.
Implementation Method 1
an emitter coupled with the detector and configured to emit the signal, a receiver configured to receive the signal from the emitter via a wireless communication
Data Source
AI summary
A vehicle and a vehicle step apparatus are provided. The vehicle includes: a body; a door; and a vehicle step apparatus including: an extending and retracting device mounted on the body, a motor configured to drive the extending and retracting device to extend or to retract, a detector configured to detect an opening-closing state of the door and to generate a signal indicating the opening-closing state of the door, an emitter coupled with the detector and configured to emit the signal, a receiver configured to receive the signal from the emitter via a wireless communication, a controller coupled with the motor and the receiver respectively and configured to control the motor to drive the extending and retracting device according to the signal.