ER-MNS-09 MEMS directional module: a precise tool for revolutionizing drilling technology

The ER-MNS-09 MEMS directional module has become a benchmark for directional drilling in complex environments with its innovative design and cutting-edge technology.

Core technology

1. Compact structure and advanced MEMS gyro technology

The ER-MNS-09 uses the latest MEMS gyro technology to break through the volume limitations of traditional equipment and achieve extreme miniaturization with a special-shaped cylindrical design, with a diameter of only 30mm and a length of 120mm. This compact size allows it to be directly embedded in small spaces such as the probe pipe at the front end of the drilling equipment without the need for additional modification of the drilling tool structure. It is suitable for space-constrained scenarios such as underground and tunnels. The lightweight feature significantly reduces the impact on the balance of the drilling system.

2. Three-axis MEMS gyro and accelerometer strapdown inertial measurement technology

The equipment is equipped with three-axis MEMS gyroscopes and three-axis MEMS accelerometer strapdown inertial measurement technology. Through the multi-sensor data fusion algorithm, the attitude angle (pitch, roll) and azimuth (true north direction) of the carrier are solved in real time. Compared with the traditional mechanical gyroscope, the strapdown design abandons the complex mechanical stabilization platform, and achieves fast response through a pure solid-state electronic system. It can still maintain measurement stability when the drill pipe vibrates violently, and the azimuth accuracy can reach 0.25°secψ, which has high stability and reliability.

3. Autonomous north-seeking function

The device realizes the self-seeking function by sensing the horizontal component of the earth's rotation angular velocity, without relying on external reference benchmarks (such as magnetic north or manual calibration). After startup, the system automatically performs initial alignment and completes the true north direction solution, and the azimuth output frequency reaches 100Hz. This feature gives it a unique advantage in scenarios such as mines and tunnels where ground calibration is impossible. For example, in horizontal directional drilling (HDD), the drill bit can continue to update the azimuth data after entering the underground, avoiding the trajectory deviation problem caused by accumulated errors of traditional equipment.

4. Azimuth measurement without magnetic interference

ER-MNS-09 completely abandons magnetic sensors and relies only on the inertial measurement principle of gyroscopes and accelerometers. The azimuth angle calculation is not affected by the geomagnetic field. In strong magnetic environments (such as iron ore tunnels, near transmission and substations) or metal confined spaces (such as inside oil and gas pipelines), its azimuth angle accuracy can still be accurately maintained, providing reliable guarantee for high-precision directional drilling and underground mapping.
Through the above technological breakthroughs, the ER-MNS-09 MEMS directional short section surpasses traditional solutions in performance, reliability and applicability, becoming an indispensable directional core system in complex underground projects.