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A Study on the Extraction of Balance Information based on the Biological Evolving Mechanism

基于生物进化机制的平衡信息提取研究

基本信息

批准号：
08650312
负责人：
OKADA Tokuji
金额：
$ 1.6万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650312/
关键词：
Sensor of Balance Magnetic Flux Magnetic Potential Spherical Vessel Floating Board Hall-Effect Device Gauss Meter Circular Permanent Magnet Sensor of Balance Magnetic Flux Magnetic Potential Spherical Vessel Floating Board Hall-E

项目摘要

This paper proposes a magnetic measurement principle to develop a balance sensor. Basically, the sensor is composed of a spherical vessel sealing certain amount of liquid, a mushroom-shaped float and a permanent magnet. The circular plated magnet is fixed on the root of the float stem. According as the liquid moves in the vessel, the float changes the position of the magnet. And the Hall effect devices located around the vessel sense the change of balance with the aid of a signal processor.At first, the density of the Hall effect devices and the algorithm for determining the direction of the resultant acceleration are considered. Also, the results of experiments for magnet's position and the angle of balance are shown. Then, the measurement error is analized since the magnet is free to move on the float in the vessel and the measurement error is caused not only by the position eror of the Hall-Effect device located at the vessel exterior, but also by the clearance betweeen the float an … More d the vessel interior. In particular, the errors produced by the changes of the float's height, position on the liquid surface. and inclination are investigated and calculated by supposing possible changes of the sensor parameters in the practical application.Finally, we extend the measurement principle so that we can sense not only the direction of acceleration but also the azimus in 3-D space. Basically, the sensor is composed of a spherical vessel filling a considerable amount of liquid, a mushroom-shaped float moving freely with a small clearance in the vessel, two permanent magnets fixed at the float's cap and stem, and Hall-effect devices located around the vessel exterior. We describe the structural mechanism of the sensor head and investigate the mathematical formulation to estimate the magnetic flux intensity sensed by the Hall devices, and also the signal processing algorithm for determining the magnet position as a common point of magnetic potential curves depicted by using the Hall output. The data of magnetic flux intensity obtained by calculation and experiment are compared to verify the validity of the measurement principle. The proposed method is effective in detecting all directions of the resultant acceleration of motion and gravity with uniform resolution, since the sensor has no rotation axes. Less

本文提出了一种磁测量原理来研制平衡传感器。该传感器基本上由一个密封一定量液体的球形容器、一个蘑菇形状的浮子和一个永磁体组成。圆形电镀磁铁固定在浮杆根部。根据液体在容器中的运动，浮子改变磁铁的位置。放置在容器周围的霍尔效应装置借助信号处理器感知平衡的变化。首先，考虑了霍尔效应器件的密度和确定合成加速度方向的算法。并给出了磁体位置和平衡角的实验结果。然后，分析了磁体在容器内浮子上自由运动所产生的测量误差，该测量误差不仅与容器外部霍尔效应装置的位置误差有关，还与容器内部浮子与磁体之间的间隙有关。特别是浮子在液体表面上的高度、位置的变化所产生的误差。通过假设传感器参数在实际应用中可能发生的变化，研究并计算了倾角。最后，我们扩展了测量原理，使我们不仅可以感知加速度的方向，还可以感知三维空间中的方位角。基本上，传感器是由一个装满大量液体的球形容器，一个蘑菇形状的浮子，在容器内自由移动，有一个小的间隙，两个固定在浮子的盖子和茎上的永久磁铁，以及位于容器外部的霍尔效应装置组成的。我们描述了传感器头的结构机理，研究了估计霍尔器件感应磁感应强度的数学公式，以及确定磁体位置作为霍尔输出所描绘的磁势曲线的共同点的信号处理算法。将计算所得的磁通强度数据与实验所得的磁通强度数据进行对比，验证了测量原理的有效性。由于传感器没有旋转轴，因此该方法可以有效地以均匀分辨率检测运动和重力合成加速度的所有方向。少