Vehicle Stop-Based Accelerometer Calibration for Driving Score Accuracy
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Solution Overview
Problem
Conventional methods for calibrating acceleration sensors in vehicles require conscious user effort and time, such as generating sudden braking, which is inefficient.
Innovation Solution
A method for calibrating an acceleration sensor in a communication device by executing calibration automatically when the vehicle stops, storing the result after a first set time, and reflecting it after a second set time, without requiring user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sudden braking is used for calibration, then calibration can be performed, but it requires conscious user effort and time
Solution Approach 1:
The system performs calibration automatically during vehicle stops without requiring user initiation. By detecting stop conditions through speed sensor data and automatically executing calibration routines, the system prepares the acceleration sensor in advance for accurate driving behavior measurement, eliminating the need for users to consciously perform calibration actions.
Solution Approach 2:
The calibration system operates autonomously by self-detecting vehicle stop conditions through speed information and self-executing the calibration process. The system monitors its own operational state and performs necessary calibration maintenance without external user intervention, making the calibration process self-sufficient and automatic.
2Measurement precision
If sudden braking is used for calibration, then calibration can be performed, but it requires conscious user effort
Solution Approach 1:
The calibration system operates autonomously by self-detecting vehicle stop conditions through speed information and self-executing the calibration process. The system monitors its own operational state and performs necessary calibration maintenance without external user intervention, making the calibration process self-sufficient and automatic.
Solution Approach 2:
The system replaces manual user actions with automated electronic detection and control. By using speed sensor data to detect vehicle stops and automatically triggering calibration routines through electronic control systems, the patent substitutes mechanical/user-based calibration initiation with an automated electronic mechanism.
3Extent of automation
If calibration is performed immediately when vehicle stops, then calibration is automatic, but calibration may be performed before vehicle is fully stationary
Solution Approach 1:
The system performs preliminary detection of vehicle stop conditions by monitoring speed information over a predetermined time period. Before executing calibration, the system verifies that the vehicle has been stationary for sufficient time, ensuring that calibration is performed only when the vehicle is fully stationary and stable conditions are confirmed.
Solution Approach 2:
The system continuously monitors vehicle speed and provides feedback to determine whether stop conditions are met. By using speed sensor feedback over a predetermined time interval, the system confirms that the vehicle remains stationary before initiating calibration, ensuring accurate calibration conditions are achieved.
Data Source
AI summary
A non-transitory computer-readable storage medium storing a program causing a computer of a communication device to perform: acquiring speed information of a vehicle; receiving an acceleration measurement start instruction for an acceleration sensor of the communication device; in a case where the measurement start instruction is received and the vehicle stops, executing calibration of the acceleration sensor in response to elapse of a first set time in a stopped state from when the vehicle stops; storing a result of the calibration; and reflecting the result of the calibration stored in response to elapse of a second set time in the stopped state from when the vehicle stops.