Vehicle Wireless Communication Unit Position-Based Transmission Control
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Solution Overview
Problem
The existing wireless communication systems for vehicles face radio wave interference issues when exported to foreign countries due to non-standardized frequency bands and varying communication systems worldwide, leading to potential interference with local wireless communication systems.
Innovation Solution
A wireless system device equipped with a wireless communication unit, condition detector, position obtainer, and operation controller that detects the vehicle's state changes and obtains positional information to control radio signal transmission based on distance, inhibiting transmission when crossing into areas with different communication systems to avoid interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless system device autonomously and cyclically transmits vehicle information to ensure real-time safety monitoring, then the reliability of safety information provision is improved, but radio wave interference with other wireless communication systems occurs when the vehicle is exported to foreign countries
Solution Approach 1:
The system performs preliminary detection of the vehicle's state changes (operation to stop, stop to operation) and records the first position before transmission. When the vehicle is exported and experiences a state change after being stopped, the system compares the current position with the recorded first position to determine if transmission should be inhibited, preventing radio wave interference before it occurs
Solution Approach 2:
The system continuously monitors the vehicle's operational state and position, providing feedback to the transmission control mechanism. When the vehicle shifts from stop state to operation state after being stopped, the system uses the distance between the first position (recorded at operation-to-stop transition) and current position to determine whether to inhibit transmission, creating a closed-loop control that prevents interference
2Object-affected harmful factors
If the system inhibits radio signal transmission when the vehicle is in stop state to avoid interference, then radio wave interference is reduced, but the responsiveness to real-time safety information is reduced
Solution Approach 1:
The transmission inhibition is not static but dynamically adjusted based on the vehicle's state transitions. The system records the first position when transitioning from operation to stop state, then compares current position with this recorded position when transitioning back to operation state. This dynamic approach ensures transmission is only inhibited when necessary (after long-distance transport) while allowing normal transmission during regular operation-stop-operation cycles
3Ease of operation
If the wireless system device is configured to transmit information autonomously without position-based control, then the ease of operation is improved, but the adaptability to different wireless communication environments in different countries is reduced
Solution Approach 1:
The system automatically detects its own state changes (operation to stop, stop to operation) and records its own position information without external intervention. The transmission control is self-managed by comparing the recorded first position with current position, enabling the system to adapt to different communication environments autonomously without requiring manual configuration or external control
Data Source
AI summary
A wireless system device is a device to be mounted on a vehicle. The wireless system device includes a wireless communication unit, a condition detector, a position obtainer, and an operation controller. The wireless communication unit transmits a radio signal. The condition detector detects a first timing and a second timing. The first timing is a timing when the vehicle shifts from an operation state to a stop state. The second timing is a timing when the vehicle shifts from the stop state to the operation state for a first time after the first timing. The position obtainer obtains a first position and a second position. The first position and the second position are positions where the vehicle is at the first timing and the second timing, respectively. The operation controller controls operation of the wireless communication unit based on a distance between the first position and the second position.