Force Sensor Calibration During Charging for Electric Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric moving vehicles face difficulties in controlling direction and movement due to the need for significant user force and susceptibility to zero point errors in force detection sensors, especially when loaded with heavy goods, which can lead to external interference and malfunction risks.
Innovation Solution
A computer-implemented calibration method for force detection sensors in electric moving vehicles that sets the zero point based on sensing values collected during battery charging, using majority or average values, and reverts to initial settings if outside a predetermined range, minimizing external interference and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If calibration is performed during vehicle operation, then calibration can be done conveniently, but external interference factors increase causing zero point errors
Solution Approach 1:
The patent performs force sensor calibration during the charging process, which occurs before the vehicle is put into service. This preliminary calibration ensures the sensor is calibrated under static conditions without external interference, eliminating the need for separate calibration steps while maintaining high accuracy.
2Measurement precision
If multiple sensing values are collected and processed, then zero point accuracy improves, but calibration complexity increases
Solution Approach 1:
The controller automatically collects multiple sensing values during charging, processes them through statistical methods (averaging or median calculation), and determines the zero point without user intervention. This self-service approach improves accuracy while keeping the user-facing interface simple.
Solution Approach 2:
The system collects multiple sensing values and uses statistical feedback (average or median) to determine the final zero point. This feedback mechanism filters out outliers and improves accuracy while the controller handles the complexity of processing multiple values.
3Measurement precision
If calibration is performed with heavy goods loaded, then real-world accuracy improves, but user force requirements increase making control difficult
Solution Approach 1:
The system performs calibration during charging before the vehicle is used to transport heavy goods. This preliminary calibration establishes an accurate baseline that will be used during subsequent operations, eliminating the need to calibrate while the vehicle is being operated under load.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is a calibration method and apparatus for a force detection sensor of an electronic moving vehicle. A calibration method includes collecting a sensing value of a force detection sensor that detects a force applied to an electric moving vehicle during charging of a battery included in the electric moving vehicle; and setting a zero point of the force detection sensor based on the sensing values collected during charging of the battery.