摘要
针对地磁车位探测器的标定值不稳定的问题,研究了地磁车位探测器标定值的变化特点,提出了一种地磁车位探测器的在线标定方法。该方法可实现在线自动标定,并可以提高车位状态判断的准确率。这种在线标定方法使用统计学方法对标定值的变化范围进行分析,可跟踪标定值的变化,并对其进行定期修正。文章最后用一个实际应用案例验证了该在线标定方法的可行性。
The calibration values of geomagnetic parking detectors change over time. This paper studies the characteristics of the variation of calibration values of the geomagnetic parking detectors, and proposes an online calibration method based on statistical analysis to achieve online automatic calibration of geomagnetic parking detectors and to improve the accuracy of the parking status judgement. In the online calibration method, the range of variation of the calibration value is analyzed on the basis of statistical method, the variation of the calibration values is tracked, and calibration values are revised periodically. A practical application verifies the feasibility of the online calibration method.
出处
《物联网技术》
2013年第3期22-24,共3页
Internet of things technologies
关键词
在线标定
地磁
车位探测器
统计分析
online calibration
geomagnetic
parking detector
statistical analysis
