基于霍尔效应的土沉降监测方法及装置

Method and Device for Soil Settlement Monitoring Based on Hall Effect[JZ)][HS)]

摘要:

针对我国目前土沉降监测的自动化程度及仪器可靠性低、监测数据不及时、测量精度不高等问题,提出了一种新型基于霍尔效应的科学监测方法；这种方法采用多个霍尔器件组成阵列,将沉降磁环分布在土中,土的沉降会带动沉降磁环的跟随沉降,于是便会引起霍尔器件周围磁场强度发生相应的变化;利用霍尔效应监测霍尔器件周围磁场强弱并转化为相应的电信号,采用RS485总线通讯方式将采集到的数据实时上传至实验主机,主机对实验数据进行科学建模处理找到沉降磁环沉降位移与电信号的关系,并设计监测管理平台以实现对土沉降实时在线监测;通过实验验证这种监测方法监测精度高最大误差在0.4 mm、稳定性好,可以对多点实时在线监测,从而实现对土沉降的智能化高精度监测；在设计中可结合当前远程传输控制技术实现数据远程共享,具有更加广泛的应用前景。

Abstract:

A new scientific monitoring method based on Hall effect is proposed to solve the problem of low degree of automation and low reliability, low monitoring data and low measurement accuracy. This method uses a number of Hall devices to form an array, the settlement of the magnetic distribution in the soil, the settlement of the soil will lead to the settlement of the magnetic ring to follow the settlement, so it will cause the Hall device magnetic field around the corresponding changes. The Hall effect is used to monitor the strength of the magnetic field around the Hall device and converted into the corresponding electrical signal. The data collected by the RS485 bus is used to upload the data to the experimental host in real time. The host model is found in the scientific modeling of the experimental data. Displacement and electrical signal relationship, and design monitoring management platform to achieve real-time monitoring of soil settlement. The experimental results show that the maximum accuracy of the monitoring method is 0.4 mm, the stability is good, and the multi - point real - time monitoring can be realized in order to realize the intelligent high - precision monitoring of soil settlement. This design can be combined with the current remote transmission control technology to achieve remote sharing of data, with a wider range of applications