Vehicle Communication Device External Power Activation
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Solution Overview
Problem
Active polling systems in vehicles consume excessive power, leading to battery depletion during extended standstill periods, such as during transport, where the vehicle's internal energy supply is insufficient.
Innovation Solution
A communication device that enables contactless energy and data transmission between vehicle internal and external components, allowing the internal energy supply to be activated using an external energy source, transitioning from a deep sleep mode to an active mode, thereby reducing power consumption and maintaining reliable energy supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle's internal energy supply is continuously activated to enable contactless communication, then communication reliability is improved, but energy consumption increases leading to battery depletion during extended standstill
Solution Approach 1:
The communication device dynamically switches between active mode (when internal energy supply is available) and passive mode (when external energy supply is detected). This dynamic adaptation allows the system to maintain communication functionality while minimizing energy consumption during extended vehicle standstill periods, resolving the contradiction between reliability and energy usage.
Solution Approach 2:
The system changes its operational parameters based on the detected energy supply state. When external energy supply is detected via the communication element, the device transitions from active operation consuming internal battery power to passive operation powered externally, thereby maintaining communication reliability while preventing battery depletion.
2Use of energy by moving object
If the communication device operates in passive mode to save energy, then energy consumption is reduced, but the device cannot reliably activate the internal energy supply
Solution Approach 1:
The communication element serves as an intermediary that detects external energy supply and mediates the transition from passive to active mode. This intermediary mechanism enables reliable activation of the internal energy supply while maintaining energy-saving passive operation during vehicle transport, resolving the contradiction between energy reduction and activation reliability.
3Reliability
If the vehicle battery is depleted during transport, then the vehicle cannot operate, but continuous polling to detect external energy supply consumes additional power
Solution Approach 1:
Instead of continuous polling, the system employs periodic energy-saving polling cycles to detect external energy supply. This periodic action maintains the ability to detect external power sources and activate the vehicle when needed, while significantly reducing energy consumption compared to continuous polling, thus preserving vehicle operability without depleting the battery further.
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
This solution significantly reduces energy consumption in deep sleep mode, ensures reliable activation of the internal energy supply, and allows the communication device to operate independently of the vehicle's internal energy source, enabling efficient energy management during extended vehicle standstill periods.
Implementation Method 1
The communication element, in particular in the form of a coil, is preferably designed for inductive coupling in order to provide the energy transmission
Implementation Method 2
Contactless data transmission is z. B. a near-field transmission (in particular NFC)
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a communication device (10) for a vehicle (1) for carrying out contactless data transmission (D) between a vehicle electronics (30) and a vehicle-external device (100), wherein the communication device (10) is designed to activate a vehicle-internal power supply (iE) of the communication device (10) by means of a vehicle-external power supply (eE) at the communication device (10).