Vehicle Communication System Position-Based Limited Response Mode
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Solution Overview
Problem
Vehicle communication systems face challenges in conserving energy and avoiding unnecessary activation of vehicle functions due to misinterpretation of vehicle movements as mobile communication unit movements, leading to delayed sleep mode entry and increased energy consumption.
Innovation Solution
A communication system that includes a base station and a mobile communication unit, where the base station determines the location of the mobile communication unit relative to the vehicle and switches it to a limited-response mode when the location remains unchanged for a predetermined period, using motion sensors and ultra-wideband transceivers to accurately track the unit's position and movement, thereby conserving energy and preventing unnecessary function activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the mobile communication unit uses motion sensors to detect movement for sleep mode activation, then energy conservation is improved, but vehicle movements are misinterpreted as unit movements causing false prevention of sleep mode entry
Solution Approach 1:
The base station acts as an intermediary that receives raw motion sensor data from the mobile communication unit, processes it by comparing against vehicle motion profiles, and determines whether detected movements represent actual unit movement or vehicle movement. This intermediary processing layer resolves the contradiction by filtering false positives while preserving genuine movement detection capability for energy conservation.
Solution Approach 2:
The system implements feedback by continuously monitoring motion sensor data, comparing it with vehicle motion characteristics, and adjusting sleep mode activation decisions based on this comparison. When vehicle motion is detected, the system feedback-prevents false sleep mode deactivation; when genuine unit movement is confirmed, sleep mode activation proceeds, thus resolving the reliability-accuracy contradiction.
2Speed
If the mobile communication unit remains in active mode to respond to vehicle movements, then response readiness is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the operational state of the mobile communication unit between active mode and sleep mode based on real-time motion detection analysis. By transitioning between these states according to actual movement needs rather than remaining constantly active, the system achieves both fast response capability when needed and energy conservation during stationary periods, resolving the speed-energy contradiction.
Solution Approach 2:
The system employs periodic motion sensing and evaluation cycles rather than continuous active operation. The mobile communication unit periodically checks for movement and activates sleep mode when no movement is detected for a predetermined period, while maintaining the ability to quickly wake and respond when movement occurs. This periodic action resolves the contradiction between response speed and energy consumption.
3Measurement precision
If the base station continuously monitors location to prevent false sleep mode entry, then detection accuracy is improved, but system complexity increases
Solution Approach 1:
The system extracts only the essential motion characteristics from continuous sensor data - specifically comparing motion magnitude and patterns against predefined vehicle motion profiles - rather than processing complete location trajectories. This extraction approach maintains measurement precision for detecting genuine unit movement while significantly reducing the computational complexity at the base station, resolving the precision-complexity contradiction.
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
The system effectively conserves energy by reducing the active time of the mobile communication unit's transceiver and avoiding unnecessary vehicle function activations, ensuring efficient operation and secure vehicle control.
Implementation Method 1
using motion sensors and ultra-wideband transceivers to accurately track the unit's position and movement
Data Source
AI summary
A communication system for facilitating control over a function of a vehicle (102) comprises a base station (104) positioned in the vehicle (102) and a mobile communication unit (122). The base station (104) comprises a first transmitter for transmitting a signal to the mobile communication unit (122) and a first receiver for receiving a signal from the mobile communication unit (122). The base station (104) is configured to determine a location of the mobile communication unit (122) relative to the vehicle (102) and to cause the mobile communication unit (122) to operate in accordance with a limited-response mode when the location of the communication unit relative to the vehicle (102) remains substantially unchanged for a predetermined period of time.