Vehicle Security System Using Motor Counter-Torque
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Solution Overview
Problem
Hybrid and electric vehicles, such as scooters and motorbikes, face security issues due to their higher value and expensive components, leading to theft and compromised security, despite their environmental benefits over traditional combustion engine vehicles.
Innovation Solution
A vehicle security system that includes a motor controller, motion sensors, and a wireless authentication mechanism to prevent unauthorized operation by detecting wheel rotation and requiring authentication from an external device, thereby locking the vehicle to prevent theft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hybrid or electric vehicles are used, then environmental benefits and fuel economy are improved, but vehicle security and theft prevention deteriorate
Solution Approach 1:
The system performs preliminary authentication of the user before allowing vehicle operation. The motor controller checks authentication status in advance of engine start or vehicle movement, preventing unauthorized use before it can occur. This proactive security measure addresses the vulnerability of high-value electric vehicles to theft.
Solution Approach 2:
The system continuously monitors authentication status and provides feedback control over vehicle operation. The motor controller receives authentication information and adjusts vehicle accessibility based on this feedback, enabling dynamic security responses to changing conditions such as unauthorized presence or theft attempts.
2Reliability
If authentication systems are added to vehicles, then security is improved, but device complexity increases
Solution Approach 1:
The motor controller performs multiple functions: it manages power delivery to the motor and simultaneously handles authentication and security control. By making the motor controller a multi-functional device that integrates both propulsion control and security authentication, the system avoids adding separate dedicated security hardware, thereby limiting complexity increases while maintaining improved security.
Data Source
Figure 1A~1B
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AI summary
A vehicle has a security and anti-theft system that senses movement of the vehicle in a forward or backward direction when the vehicle is in a locked state, such as by detecting wheel rotation. Upon this detection, the security system signals the motor to counteract the wheel movement by rotating one or more wheels in the opposite direction of the direction of wheel rotation detected until the wheel rotation is no longer detected. The security and anti-theft system may determine whether the vehicle is in a locked state by detecting whether a key is present and/or by one or more communications received by an external wireless device.