A control system of a three-axis fiber optic gyroscope inclinometer

Abstract

The embodiment of the invention discloses a control system for a three-axis optical fiber gyro inclinometer. The control system comprises an inertial measurement unit, a temperature measurement unit,an integrated micro-control circuit, an AD analog-to-digital conversion circuit, a DSP solution circuit and a power supply circuit, wherein an optical fiber gyro signal collected by the inertial measurement unit is processed by the integrated micro-control circuit, an acceleration meter signal measured by an accelerometer is processed by the AD analog-to-digital conversion circuit, finally the processed optical fiber gyro signal and acceleration meter signal are directly transmitted to a high-efficiency digital DSP processor of the DSP solution circuit for real-time solution. The control system for the three-axis optical fiber gyro inclinometer has the advantages that the solution is efficient and fast, uploading to a ground solution platform is not needed, the data solution speed and accuracy are greatly improved, the temperature adaptability is better, the overall size is small, the design is integrated, and the control system is suitable for narrow space in a well.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of oil exploitation, and in particular to a control system for a three-axis fiber optic gyro inclinometer. Background technique [0002] With the continuous improvement of oilfield development, easy-to-exploit oil resources are increasingly exhausted, and the environment and well conditions in oil areas are becoming more and more complex. In order to ensure the quality of oil exploration and production, more accurate and efficient oil well borehole trajectory measurement is required. At present, the inclinometers widely used in China mainly use fluxgate technology and mechanical gyro technology, but they all have their own defects and shortcomings, resulting in various drawbacks and restrictions. The fiber optic gyro inclinometer is based on the fiber optic gyroscope (FOG) A new generation of inclinometers with inertial navigation measurement technology and optical fiber communication t...

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Problems solved by technology

[0004] To this end, the embodiment of the present invention provides a control system for a three-axis fiber optic gyro inclinometer to solve the problem of the transmission signal caused by the difference between the uphole and downhole environments in the ground platform calculation method of the existing oil well fiber optic gyro inclinometer. Deformation, delay, some parameters cannot be transmitted in time, affecting the measurement accuracy

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