Introduction
The ER-MNS-08D ultra low cost single axis MEMS north seeker (hereafter referred to as the Gyro North Seeker) is primarily designed for rapid and autonomous determination of true north direction. It employs a navigation grade MEMS gyroscope to measure the Earth's rotational rate. This signal is then processed to calculate the angle between the gyro's primary axis and true north, providing accurate azimuth information for the carrier platform.
The device is an integrated mechatronic system, comprising a MEMS gyroscope, accelerometer, mechanical rotation control mechanism, and an embedded computer.
Key Features
High North seeking Accuracy: 0.12° ~1°secψ selectable
Wide Attitude Measurement Range: -30° to +30°
Short North-Seeking Time: find the true north within 180s
Strong Anti-Interference: Operates independently without external signals; unaffected by surrounding magnetic fields or other environmental interference
Compact & Lightweight: Dimensions: 56×56×79.5mm; Weight: ≤360g
Applications
- Intelligent tunneling in coal mine roadways and directional drilling
- Challenging engineering projects such as longwall mining and deep shaft penetration
- Integration into engineering equipment like directional drilling rigs and bridge erection machines
- Emergency response and other scenarios requiring rapid north finding
Specifications
| Model No. | ER-MNS-08A | ER-MNS-08B | ER-MNS-08C | ER-MNS-08D |
| North seeking accuracy | 1°secψ | 0.5°secψ | 0.25°secψ | 0.12°secψ |
| Attitude accuracy(1σ) | 0.5° | |||
| Measurement range of north seeking | 0°~360° | |||
| Measurement range of attitude | -30°~+30° | |||
| North seeking time | 180s | |||
| Voltage and environment | ||||
| Working temperature | 5℃~+55℃ | |||
| Power supply | DC9V | |||
| Output interface | RS422 | |||
| Physical characteristics | ||||
| Dimensions (mm) | 56×56×75 | |||
| Weight (g) | ≤360 | |||
Maintenance and Usage
If no serial port data output is observed during the gyro north seeker, one should check whether the connections are correct, whether the serial port settings and data reception format are correct. If the checks are all correct, professional personnel should be sought for repair.
Notes:
- During transportation and installation of the gyronorthseeker, it should be handled with care and no impact should be applied.
- During the north seekingprocess, the carrier should remain absolutely stationary; otherwise, the north seeking accuracy will be affected.


