On-Vehicle Device Dynamic Communication Range Adjustment
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Solution Overview
Problem
On-vehicle devices experience power waste due to unintended wireless communication connections with mobile terminals when their communication range is set extensively beyond the vehicle, leading to unnecessary connections and energy consumption.
Innovation Solution
Incorporating a parking determination unit and a communication range changing unit in the on-vehicle device, which narrows the communication range when the vehicle is parked, reducing the likelihood of unintended connections and conserving power by limiting the communication range to a narrower area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the communication range of the on-vehicle device is set extensively to the outside of the vehicle, then data communication and remote operation services can be provided outside the vehicle, but unintended communication connections may occur and power is wasted
Solution Approach 1:
The communication range is made dynamic rather than fixed. The wireless communication unit automatically adjusts its communication range based on the vehicle's operation state detected by the operation state detection unit. When the vehicle is operating, a wider communication range is maintained for services; when parked, the range is automatically narrowed to prevent unintended connections and reduce power consumption.
Solution Approach 2:
The communication range parameter is changed based on the vehicle's operation state. The system detects whether the vehicle is in an operating state or parked state, and accordingly adjusts the communication range parameter of the wireless communication unit. This parameter change allows the system to optimize between service availability and power consumption by matching the communication range to the actual operational context.
2Adaptability or versatility
If the communication range is set extensively, then wireless communication can occur outside the vehicle, but communication connections are established in situations not intended by the user
Solution Approach 1:
The communication range is dynamically adjusted based on the vehicle's operation state. When the vehicle is parked, the communication range is automatically narrowed, which prevents unintended connections with mobile terminals in locations such as garages or homes, while still allowing legitimate communication when the vehicle is in operation.
Solution Approach 2:
The system uses feedback from the operation state detection unit to control the wireless communication unit. The detection of the vehicle's operation state provides feedback that triggers appropriate adjustments to the communication range, ensuring that communication connections are made only when appropriate and intended by the user.
3Loss of energy
If the communication range is narrowed when the vehicle is parked, then power waste is reduced, but the communication range must be dynamically adjusted
Solution Approach 1:
The operation state detection unit serves multiple functions: it detects whether the vehicle is in operation or parked, and this single detection mechanism controls the communication range adjustment. This multi-functionality approach reduces overall system complexity by using one detection system for multiple purposes rather than requiring separate systems for each function.
Solution Approach 2:
The wireless communication unit automatically adjusts its own communication range based on feedback from the operation state detection unit, without requiring manual intervention or complex external control systems. This self-service capability simplifies the overall system architecture while achieving the goal of reducing power consumption during parked states.
Data Source
AI summary
An on-vehicle device, which is to be mounted on a vehicle, includes a wireless communication unit which is connected to a mobile terminal located within a communication range to perform wireless communication with the mobile terminal, and provides a service using the wireless communication in the wireless communication unit. The on-vehicle device further includes a parking determination unit which determines whether or not the vehicle is parked and a communication range changing unit which narrows, when the parking determination unit determines that the vehicle is parked, the communication range of the wireless communication unit such that the communication range is narrower than that before the parking determination unit determines that the vehicle is parked.