Attitude angle sensing device and monitoring method based on geomagnetic field and gravitational field sensing

Abstract

The invention discloses an attitude angle sensing device based on geomagnetic field and gravitational field sensing and a monitoring method. The attitude angle sensing device comprises a shell, and a three-axis magnetic field sensor, a three-axis acceleration sensor, a temperature sensor, an MCU, a CAN transceiver and a power module are arranged in the shell. The attitude angle sensing device is simple in structure, small in size, low in manufacturing cost and convenient to install, attitude angle and temperature data of a monitoring end can be output in real time, meanwhile, an external interface is reserved in a circuit of the device, and other sensors such as a humidity sensor and a vibration sensor can be added according to needs. The tunnel deformation monitoring method can be used for tunnel deformation monitoring, a coordinate correction method based on the horizontal distance of the end points is added, error correction is carried out through the horizontal distance, measured by the laser ranging system, of the two end points, data obtained through tunnel deformation monitoring are more accurate, and monitoring and early warning are carried out on the overall deformation condition of the tunnel more accurately.

Description

technical field [0001] The invention relates to the field of engineering monitoring, in particular to an attitude angle sensing device and a monitoring method based on geomagnetic field and gravitational field perception. Background technique [0002] Engineering monitoring is one of the indispensable procedures in the engineering construction process. The accuracy and real-time performance of engineering monitoring directly affect the safety in the engineering construction process, among which engineering deformation monitoring is particularly important. Taking tunnel engineering as an example, in the process of tunnel construction, when a large deformation occurs, it is necessary to take timely measures to control it. If the deformation monitoring is not timely, it may cause the collapse of the tunnel, affect the construction progress, and even cause casualties. At present, the tunnel deformation monitoring method is mainly carried out by manual monitoring, and the "monito...

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Problems solved by technology

Taking the tunnel project as an example, in the process of tunnel construction, when a large deformation occurs, measures need to be taken in time to control it. If the deformation monitoring is not timely, it may cause the collapse of the tunnel, affect the construction progress, and even cause casualties

At present, the tunnel deformation monitoring method is mainly through manual monitoring, and the "monitoring points" of the tunnel section are measured by using convergence rulers, total stations and other equipment. This traditional monitoring method is inconvenient to operate equipment, and the monitoring data is intermittent. Numerous limitations prevent long-term automated monitoring

[0003] With the development of sensor technology, people began to try to apply angle sensors such as inclination sensors to engineering deformation monitoring. A tunnel deformation monitoring method based on inclination sensors represented by the Bassett system appeared, but the inclination sensors used in them were relatively small in size. Large, complex structure, high cost, inconvenient installation, large working area, and cannot be widely used

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