Vehicle Control System Polling Restriction for Electronic Key Power Management
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Solution Overview
Problem
Current electronic key systems for vehicles consume excessive current due to continuous communication during prolonged key presence in detection range, leading to increased power consumption and user inconvenience when other keys cannot operate the vehicle.
Innovation Solution
Implement a vehicle control system that restricts the electronic key's response to polling signals after a predetermined time period, allowing the system to conserve power without degrading user convenience by enabling communication with other authenticated keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the polling signal transmission is stopped under a specific condition to suppress current consumption, then current consumption in the on-vehicle apparatus and electronic key is reduced, but operations by all electronic keys including both the target electronic key and other electronic keys cannot be performed until stopping of the transmission is cancelled, thus degrading user convenience
Solution Approach 1:
The patent segments the polling control process by introducing a determination section that identifies specific electronic keys requiring polling control. Instead of applying a blanket stop to all polling signals, the system divides the control scope to only affect the identified target electronic key, allowing other electronic keys to continue operating normally. This segmentation resolves the contradiction by suppressing current consumption for the specific key while preserving user convenience for other keys.
Solution Approach 2:
The patent applies local quality by making the polling signal transmission condition-specific rather than universal. The determination section identifies which electronic key should be subject to polling control based on local conditions (e.g., authentication status, detection range), and the stop instruction is applied only to that specific key's polling control. This localized approach allows current consumption to be suppressed where needed while maintaining user convenience in other areas.
2Use of energy by moving object
If the intervals of transmitting the polling signal are extended to suppress current consumption, then current consumption in the on-vehicle apparatus and electronic key is reduced, but when the electronic key is staying for a long time period in a polling signal detection range, communication for the polling control is continuously performed and current consumption is increased
Solution Approach 1:
The patent applies dynamics by making the polling signal transmission adaptive rather than static. The determination section continuously monitors whether the electronic key remains in the detection range and whether communication is continuously performed. Based on these dynamic conditions, the system adjusts the polling control by issuing stop instructions when the key stays for a predetermined time or longer. This dynamic adjustment resolves the contradiction by extending intervals to save power while preventing continuous communication when the key remains stationary for extended periods.
3Reliability
If communication with the electronic key is continuously performed to maintain detection and authentication functionality, then the vehicle can respond to user operations promptly, but current consumption in the on-vehicle apparatus and electronic key is increased
Solution Approach 1:
The patent applies periodic action by implementing conditional polling control rather than continuous communication. The determination section monitors communication patterns and issues stop instructions periodically when specific conditions are met (e.g., when the electronic key stays in the detection range for a predetermined time). This periodic intervention maintains detection and authentication functionality when needed while reducing current consumption during periods when continuous communication is not necessary.
Data Source
AI summary
Provided is a vehicle control system that performs detection and authentication of an electronic key being present in a detection range on a periphery of a vehicle, on the basis of polling performed by an on-vehicle apparatus. Any one of the on-vehicle apparatus and a first electronic key includes: a determination section configured to determine whether or not communication, between the on-vehicle apparatus and the first electronic key, in which the first electronic key returns a signal in response to a signal transmitted from the on-vehicle apparatus is continuously performed for not less than a predetermined time period; and a first processing section configured to restrict a response, by the first electronic key, to a first polling signal transmitted from the on-vehicle apparatus, when the determination section has determined that the communication is continuously performed for not less than the predetermined time period.