虚拟七轴随钻姿态测量传感器设计

Design of Virtual Seven-Axis While-Drilling Direction and Inclination (D&I) Measurement Sensor

针对传统随钻姿态测量传感器的测量成本高、测试环境干扰大等问题,提出一种虚拟七轴随钻姿态测量传感器设计方案。提出了以计算机作为上位机、NI USB-6001数据采集卡作为下位机的方案,在MATLAB平台下实现姿态反演算法。在MATLAB GUI设计的主界面下输入井斜角、方位角、工具面角、转速等姿态信息,实现三轴加速度、三轴磁通门测量值和陀螺仪参数的输出;NI USB-6001数据采集卡实现D/A转换,形成硬件在环仿真系统。经应用验证,传感器输出数据误差小于0.4%,解算精度较高,能够为实际工程中随钻姿态测量系统的误差补偿方案提供理论依据;同时结合理论计算结果,及时对实测结果进行监控和有效调整。

Aiming at the problems such as high measurement cost and large environmental interference of traditional while-drilling direction and inclination(D&I)measurement sensor,a design scheme for virtual seven-axis while-drilling D&I sensor is proposed.Scheme of taking the PC as the upper computer and NI USB-6001 data acquisition card as the lower computer is proposed,the D&I inversion algorithm is realized on the MATLAB platform,and the D&I information such as well inclination angle,azimuth angle,tool face angle and rotation speed is input on the main interface designed by MATLAB GUI,as to realize the measurement value output of three-axis acceleration,three-axis fluxgate and gyroscope parameters.NI USB-6001 data acquisition card is used to realize D/A conversion and form the hardware-in-loop simulation system.The application shows that the error of sensor output data is less than 0.4%,and the calculation accuracy is high,which can provide theoretical basis for the error compensation scheme of while-drilling D&I measurement system in practical engineering.At the same time,combined with the theoretical calculation results,the measured results are monitored and effectively adjusted.