Remote Engine Start System with Automatic Area Detection
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Solution Overview
Problem
Existing remote engine starting systems require users to manually operate the engine start button within range of the vehicle, complicating the starting process and potentially leading to user inconvenience and security concerns.
Innovation Solution
A remote engine starting system with a portable terminal that automatically transmits an engine start signal when within a predetermined communication area of the vehicle, enabling automatic engine start functionality while ensuring security through authentication and eliminating the need for additional position-determining components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user manually operates the engine start button within range, then the engine can be started remotely, but the operation becomes complicated when radio waves fail to reach the vehicle
Solution Approach 1:
The portable terminal determines whether it is within the communication area before the user operates the engine start button. If the terminal is within range, the system preliminarily validates the communication link and prepares for engine start, so that when the user presses the button, the engine starts immediately without requiring repeated operations.
Solution Approach 2:
The system provides feedback to the user by displaying information indicating whether the portable terminal is within the communication area. This feedback mechanism allows the user to know the current status, eliminating unnecessary repeated operations and simplifying the engine start process.
2Ease of operation
If the engine start signal is transmitted automatically when within range, then user convenience is improved, but security concerns arise
Solution Approach 1:
The portable terminal and vehicle perform preliminary authentication and link establishment before the engine start signal is transmitted. The system validates the portable terminal's identity and establishes a secure communication link in advance, ensuring that only authorized terminals can initiate engine start, thus maintaining security while enabling automatic operation.
Solution Approach 2:
The communication link establishment process acts as an intermediary mechanism between the portable terminal and the vehicle. This intermediary layer performs authentication and validation, ensuring secure communication before the engine start signal is transmitted, thereby resolving the security concern while maintaining automatic operation capability.
3Measurement precision
If additional position-determining components are added to determine terminal location, then accurate location determination is achieved, but device complexity increases
Solution Approach 1:
The vehicle's existing communication system serves dual purposes: it both establishes the communication link for engine control and determines whether the portable terminal is within the communication area. The communication link establishment process itself provides the location determination function, eliminating the need for separate position-determining components and reducing system complexity.
Solution Approach 2:
The communication link establishment mechanism is designed to perform multiple functions simultaneously: it authenticates the portable terminal, establishes secure communication for engine control, and determines whether the terminal is within the communication area. This multi-functional design eliminates the need for additional dedicated position-determining components.
Data Source
AI summary
A remote engine starting system includes a portable terminal that is carried by a user and a vehicle that allows an engine to be started in response to receiving an engine start signal transmitted from the portable terminal. The vehicle periodically transmits a query signal for establishment of a wireless communication link with the portable terminal to a predetermined range surrounding the vehicle to define a predetermined wireless communication area of the vehicle. A control unit of the portable terminal determines, based on whether the wireless communication link with the vehicle is established, whether the portable terminal is within the wireless communication area. The control unit transmits an engine start signal when the portable terminal enters the wireless communication area surrounding the vehicle while automatic start setting is enabled by the user.