Research On 3D Visualization Of Pipeline Based On Gyro Technology

In recent years,the use of trenchless technology for pipeline laying and trajectory measurement has become very common.This technology plays a huge role in the field of cable trench trajectory measurement,gas pipeline laying,underground water supply and drainage pipeline surveying.Its appearance avoids the pollution and damage of the traditional technology to the environment,and greatly saves labor and material costs.The pipeline laying and trajectory measurement also greatly reduce the impact on traffic conditions.In the actual project,affected by the changes of the site environment and the construction technology,the pipeline trajectory after completion is expected to have a large difference,but the accurate pipeline trajectory for the evaluation of the project quality and the later pipeline construction and maintenance are very important,so it is of great practical significance to study a method that can accurately measure the pipeline position and draw its three-dimensional trajectory.In this paper,two trajectory measurement methods are proposed for the characteristics of gyro technology and the corresponding hardware devices are designed..The three-dimensional trajectory measurement scheme of pipelines studied in this paper is discussed in the following aspects.(1)With the rapid development of inertial sensors and microcontrollers,gyroscope chips are becoming more and more integrated,devices are smaller and smaller,easier to handle,and less subject to external interference.This paper proposes three based on these characteristics of gyroscopes.The attitude measurement method and two trajectory measurement algorithms are described and compared in detail.The two trajectory measurement algorithms are deduced in detail.(2)This paper designs a trajectory measurement system based on inertial sensor,which consists of balance trolley,DSP development board TMS320F28069,MPU9250,barometer,motor encoder,voltage conversion module,wireless communication module,host computer and detection calculation software.When the measuring system is working,the motor with the balance car drives the car to walk at a constant speed,the encoder collects the pulse data,and the attitude sensor measures the pitch angle,the roll angle,the yaw angle and the acceleration value at a certain frequency,and the data is passed through the wireless.The transmission module is continuously transmitted to the host computer,and the host computer program processes the data in real time.(3)In this paper,the model of hardware device is built by Simulink platform,and each module is analyzed and introduced in detail.By calling the library file of DSP,the model is downloaded to the processing chip to collect data and track measurement,which avoids the use of code.The resulting bugs reduce system error rates and simplify the measurement process.(4)In this paper,a series of experiments are carried out on the trajectory measuring device,so that it advances according to various trajectories,and the trajectory of the travel is drawn on the host computer according to the designed trajectory algorithm,and then the error is analyzed.