Vehicle Controller Position Accuracy Power Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems using mobile terminals often experience reduced accuracy in position information transmission due to GPS devices waking from sleep mode erratically, leading to increased power consumption and less accurate data.
Innovation Solution
A vehicle controller that obtains and stores accurate position information at the time of parking start and upon waking from sleep mode, transmitting the more accurate data to an external information processor, allowing for reduced power consumption and improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the GPS apparatus is activated to obtain position information upon receiving a request, then the position information can be transmitted, but the accuracy is reduced because the apparatus behaves erratically just after waking up
Solution Approach 1:
The system performs preliminary action by storing position information obtained during the parked state (when GPS is active and stable) into memory before the controller enters sleep mode. When a remote operation request is received, the stored position information is transmitted without needing to activate GPS, thus avoiding the erratic behavior period and ensuring high accuracy and application availability.
2Measurement precision
If the GPS apparatus is kept activated in stable condition, then accurate position information is available, but power consumption increases
Solution Approach 1:
The system implements periodic action by alternating between active and sleep modes for the GPS apparatus. During parked state, GPS is activated periodically to obtain and store position information. During sleep mode, GPS remains inactive to conserve power. This periodic activation ensures accurate position information is available when needed while minimizing overall power consumption.
Solution Approach 2:
Position information is obtained and stored in advance during the parked state when GPS is active. This preliminary action eliminates the need to keep GPS continuously activated, allowing the system to enter low-power sleep mode while still having accurate position information ready for transmission upon request.
Data Source
AI summary
A vehicle controller includes a communicator communicating with an information processor located outside the vehicle by transmitting and receiving information, a controller controlling the vehicle controller based on control information transmitted from the information processor, and a position-information-obtaining-part obtaining position information of the vehicle, wherein the position-information-obtaining-part obtains position information at a time of parking start upon parking start of the vehicle, and obtains position information at a time of reception of the control information when the controller receives the control information from the information processor while being in a sleep mode, and when the position-information-obtaining-part obtains the position information at the time of reception of the control information, the communicator transmits a more accurate one of the position information at the time of parking start and the position information at the time of reception of the control information.