Dual System (Gyro+Fluxgate) Trajectory Surveying Device for Mining

ER-GyroTracker-21
Two-in-One Gyro+Fluxgate system, can output both true north and magnetic north：
A)When there is magnetic field interference, it can directly switch to the Gyro Mode without picking up the drill, saving a lot of costs and time, improving efficiency and having stronger adaptability.
B)In high-precision measurement, the Gyro+Fluxgate system can serve as backups and references for each other, improving measurement accuracy and reducing errors, and minimizing the losses caused by errors.

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Introduction

Introduction

The ER-GyroTracker-21 is an intelligent real-time borehole trajectory surveying device, consisting of a surveying probe（hereinafter referred to as "probe"）and a mining smartphone as its core system . The probe has a diameter of only 24.75mm and is equipped with high-precision MEMS gyro directional module and fluxgate directional module, supporting dual modes of true north and magnetic north output.

The probe is installed inside the drill pipe, which reduces the operational failure rate of the equipment. During the measuring while drilling process, the stability of data collection and transmission has significantly improved. It can also achieve real-time measurement of the drilling space trajectory and depth while drilling, without the need for any manual intervention throughout the process. This completely eliminates the problems of false drilling and empty drilling from the very beginning.

Via Bluetooth, the probe communicates with the mining smartphone to record borehole attributes at the start of drilling. After drilling, data stored in the probe is transmitted to the smartphone for instant display of trajectory and depth. Depth can be measured automatically by the probe’s built-in sensor or synchronized with the drill rig via the smartphone—eliminating manual intervention and preventing false drilling records.

Key Advantages

1.Two-in-One Gyro+Fluxgate system, can output both true north and magnetic north：
A)When there is magnetic field interference, it can directly switch to the Gyro Mode without picking up the drill, saving a lot of costs and time, improving efficiency and having stronger adaptability.
B)In high-precision measurement, the Gyro+Fluxgate system can serve as backups and references for each other, improving measurement accuracy and reducing errors, and minimizing the losses caused by errors.
2.Employing MEMS strapdown inertial navigation system: Free from magnetic field influence, ensuring the stability and accuracy of trajectory measurement in complex underground environments.
3.Ultra-small diameter 24.75mm, highly adaptable: It can be compatible with more small-diameter drilling tools and can complete the detection work in more complex drilling environments.
4.Wireless data transmission.
5.Compatible with real-time measurement / post-drilling measurement.
6.Automatic measurement of drilling depth.
7.User-friendly analysis software with multi-borehole management and one-click Word report generation.

Applications

Real-time borehole trajectory measurement during drilling in coal mines
Azimuth measurement for directional and straight-hole drilling
Detection of deviation accuracy in directional drilling
Borehole depth measurement

Specifications

Model No.	ER-GyroTracker-21
Sub Model	A	B	C
Type of system	Gyro + fluxgate dual system	Gyro	Fluxgate
Inclination measurement range	-90°~ 90°
Inclination measurement accuracy	±0.1°
Azimuth measurement range	0~360°
Azimuth measurement accuracy	1°
Propulsion mode	It can be connected with the drill pipe to detect the drilling trajectory in real time, or it can be connected with the push rod to re-measure the trajectory after the hole is drilled.
Communication mode	Wired	Bluetooth / Wired
Measurement point interval	1 ~ 60s adjustable
Depth measurement range	Unlimited
Depth measurement accuracy	≤1m
Probe dimension	Φ24.75mm×700mm
Probe pressure resistance	≥12MPa
Way of power supply	Battery-powered / USB-powered
Power supply mode	DC 11.1V lithium polymer battery, continuous working time ≥ 20 hours / USB
Operating temperature range	5℃~55℃
Storage temperature range	0℃~60℃
Communication interface	TTL signal
Memory	32GB/64GB

Mining-specific mobile phone

Explosion-proof mark	Exib I Mb
Protection level	IP68
Power supply mode	3000mAh lithium polymer battery, continuous working time over 20 hours
Processor	Quad-core 1.2GHz, 4GB RAM, 64GB ROM
Sensors	Gravity, light, distance sensor, electronic compass
Camera	Rear 13MP, front 2MP, autofocus, supports 3096×4128 pixel photo shooting
Display	5.0-inch capacitive screen, multi-touch, 1280×720 pixels
Data functions	WIFI, Bluetooth, Micro USB 2.0
Network	All-network compatible
Dimensions	158mm×83mm×16mm
Weight	245g

Technical Features

Real-time trajectory & depth measurement:Built-in high-precision angle and depth sensors ensure accurate spatial tracking and automatic depth recording.
On-site results viewing:Immediately display measurements on the mining smartphone, including data tables, trajectory curves, and quality evaluation.
Compatible with multiple drill pipes:Supports Φ42mm/Φ50mm/Φ63.5mm/Φ73mm diameters.
Flexible operation:Suitable for in-drill measurement or post-drill handheld verification.
Bluetooth data exchange:Wireless communication between probe and smartphone.
Intelligent depth measurement:Automatically measures depth via built-in sensors or smartphone synchronization, ensuring continuous operation and preventing false drilling.

Advanced Analysis Software

3Dspatial trajectory, 2D horizontal plane projection curve, and cross-sectional curve can be flexibly switched.
Display measured curves and data tables with automatic deviation calculation.
Manage borehole groups efficiently; visualize results on one screen with automatic blank zone detection.
Export to Excel for charts/reports or to CAD for automated mapping.
Generate formatted Word reports with one click.