Vehicle Control Apparatus Signal Filtering for Power Optimization
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Solution Overview
Problem
Vehicle control apparatuses face high power consumption issues due to unnecessary authentication processes when receiving non-regular wireless signals, leading to battery exhaustion, especially when parked and exposed to external RF noise.
Innovation Solution
A vehicle control apparatus with a first processor for determining if a received wireless signal is regular and a second processor for executing authentication only when the signal is confirmed regular, thereby reducing power consumption by avoiding unnecessary authentication processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle control apparatus executes authentication process for every received wireless signal, then the security and reliability of wireless communication is improved, but the power consumption increases significantly
Solution Approach 1:
The patent divides the authentication process into two segments: a first process that determines whether a received signal is a regular wireless signal from a portable terminal, and a second process that performs full authentication only when the signal is confirmed regular. This segmentation prevents unnecessary authentication for non-regular signals (such as RF noise), thereby reducing power consumption while maintaining security for legitimate communications.
2Reliability
If the vehicle control apparatus processes all received signals through full authentication, then the security against unauthorized access is improved, but the battery life deteriorates due to continuous high power consumption
Solution Approach 1:
The patent implements a preliminary action by executing the first process before the second authentication process. This preliminary determination checks whether the received signal is a regular wireless signal from a portable terminal. By performing this preliminary check, the system avoids executing the power-intensive authentication process for non-regular signals, thus preserving battery life while maintaining security for legitimate signals.
3Use of energy by moving object
If the vehicle control apparatus executes the first process to filter regular signals, then the power consumption during authentication is reduced, but the device complexity increases due to multiple processors and processes
Solution Approach 1:
The patent segments the signal processing functionality into two distinct processes executed by processors: the first process for determining signal regularity and the second process for authentication. This segmentation allows the system to execute only the necessary authentication process for regular signals, reducing overall power consumption. The complexity is managed by organizing functions into modular processes that can be selectively executed.
Solution Approach 2:
The first process acts as an intermediary between signal reception and the authentication process. It determines whether a received wireless signal is regular (from a portable terminal) or non-regular (such as RF noise), and based on this determination, controls whether the second authentication process is executed. This intermediary function reduces unnecessary authentication operations and their associated power consumption.
Data Source
AI summary
A vehicle control apparatus is mounted on a vehicle to perform wireless communication with a portable terminal. The vehicle control apparatus includes a first processor and a second processor. The first processor execute a first process to determine whether or not a wireless signal is a regular wireless signal transmitted from the portable terminal. The second processor executes a second process including an authentication of the portable terminal in response to the received wireless signal being determined to be the regular wireless signal, and does not execute the second process in response to the received wireless signal being determined to be not the regular wireless signal. Herein, a power consumption when the first processor executes the first process is smaller than a power consumption when the second processor executes the second process.