一种基于多目标跟踪算法的防溢液位检测方法、饮水机

By employing a multi-target tracking algorithm and utilizing an ultrasonic probe array and a priori motion model, the problem of misjudgment by the ultrasonic ranging module in complex liquid surface environments was solved, thereby improving the accuracy of liquid level measurement and the reliability of spill prevention.

CN121877148BActive Publication Date: 2026-07-17CHENGDU INTELLIGENT SENSOR & SYST TECH RES CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU INTELLIGENT SENSOR & SYST TECH RES CO LTD
Filing Date
2026-03-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, ultrasonic ranging modules cannot accurately distinguish between the liquid surface and splashing water in complex dynamic liquid environments, leading to inaccurate liquid level measurement and misjudgment of overflow.

Method used

A multi-target tracking algorithm is adopted to learn the static physical boundary through an ultrasonic probe array, establish a measurement reference surface, use a priori motion model to perform signal correlation and trajectory recursion, distinguish between liquid surface and splash water, and generate accurate drive and stop control commands.

Benefits of technology

It improves the accuracy of liquid level measurement and the reliability of spill prevention, avoids misjudgment caused by splashing water, and ensures accurate control of liquid level in complex environments.

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Abstract

本申请提供了一种基于多目标跟踪算法的防溢液位检测方法、饮水机,涉及液位的测量技术领域。利用超声波探头阵列在未发现目标容器时完成静止物理边界的学习,这使得饮水机能够在不同的安装环境下建立起消除环境底噪的测量基准面,为后续测量提供了准确的零点参考。进而,在发现目标容器后,获取包含容器内部反射特征的回波信号。利用先验运动模型对这些信号进行空间邻域关联与时序状态递推,这一过程将离散、杂乱的信号点聚合映射为具有连续物理运动特征的多目标运动轨迹。使饮水机具备了区分瞬态干扰与稳态目标的能力,能够规避因水滴飞溅产生的虚假波峰导致的误判,在复杂动态液面环境下提高测量精度与防溢出的可靠性。
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